{"title":"Audio","description":"\u003c!-- META (paste these into Shopify → Search engine listing) --\u003e\n\u003ctitle\u003eAudio Modules Philippines: Microphones, Speakers, Amplifiers | Circuitrocks\u003c\/title\u003e\n\u003cmeta name=\"description\" content=\"Shop audio modules in the Philippines: microphones, speakers, MP3 players, buzzers, amplifiers, and sound sensors for Arduino, ESP32, and Raspberry Pi. Fast PH shipping from Circuitrocks.\"\u003e\n\n\u003cdiv class=\"product-copy crx-scope\"\u003e\n  \u003cstyle\u003e\n    .crx-scope{font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:#1f2937;line-height:1.65}\n    .crx-scope h2{font-size:1.6rem;margin:0 0 .35rem}\n    .crx-scope h3{font-size:1.12rem;margin:.9rem 0 .45rem}\n    .crx-scope p{margin:.5rem 0}\n    .crx-scope .section{margin:1.15rem 0}\n    .crx-scope .grid{display:grid;gap:.9rem}\n    .crx-scope .cols-2{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}\n    .crx-scope .cols-3{grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}\n    .crx-scope .card{background:#fff;border:1px solid #e5e7eb;border-radius:12px;padding:1rem}\n    .crx-scope a{color:#15803d;text-decoration:none;border-bottom:1px dashed #9ae6b4}\n    .crx-scope .pill{display:inline-block;background:#e8f5ee;color:#166534;font-weight:700;padding:.22rem .6rem;border-radius:999px}\n\n    \/* Comfortable table text *\/\n    .crx-scope table{width:100%;border-collapse:collapse;font-size:1.06rem;line-height:1.55}\n    .crx-scope th,.crx-scope td{border:1px solid #d9dde3;padding:.75rem .8rem;text-align:left;vertical-align:top}\n    .crx-scope th{background:#f5f7f9;font-weight:800}\n    @media (max-width:640px){\n      .crx-scope table{font-size:1.02rem}\n      .crx-scope th,.crx-scope td{padding:.65rem .7rem}\n    }\n    .crx-scope .muted{color:#6b7280}\n    .crx-scope .note{background:#fff8e6;border:1px solid #ffe1a1;border-radius:10px;padding:.75rem}\n  \u003c\/style\u003e\n\n  \u003ch2\u003eAudio Modules \u0026amp; Sound Components — Speakers, Microphones, MP3 \u0026amp; Amplifiers\u003c\/h2\u003e\n  \u003cp class=\"lead\"\u003e\n    Add music, voice, sound effects, or audio sensing to your projects with our full range of \u003cstrong\u003eaudio modules\u003c\/strong\u003e—including \u003cstrong\u003emicrophones\u003c\/strong\u003e, \u003cstrong\u003espeakers\u003c\/strong\u003e, \u003cstrong\u003ebuzzers\u003c\/strong\u003e, \u003cstrong\u003eMP3 players\u003c\/strong\u003e, and \u003cstrong\u003eaudio amplifiers\u003c\/strong\u003e. Ideal for Arduino, ESP32, Raspberry Pi, and DIY electronics.\n  \u003c\/p\u003e\n\n  \u003cp class=\"pill\"\u003eMicrophones • Speakers • Amplifiers • Buzzers • MP3 • Audio Sensors\u003c\/p\u003e\n\n  \u003cdiv class=\"section grid cols-3\"\u003e\n    \u003cdiv class=\"card\"\u003e\n      \u003ch3\u003eWhy shop audio modules here\u003c\/h3\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eComplete range:\u003c\/strong\u003e from simple buzzers to high-fidelity amplifiers\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eBeginner to pro:\u003c\/strong\u003e works with microcontrollers \u0026amp; Raspberry Pi\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003ePH support:\u003c\/strong\u003e wiring diagrams and audio troubleshooting help\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"card\"\u003e\n      \u003ch3\u003ePopular uses\u003c\/h3\u003e\n      \u003cul\u003e\n        \u003cli\u003eDIY radios and sound systems\u003c\/li\u003e\n        \u003cli\u003eTalking robots \u0026amp; voice assistants\u003c\/li\u003e\n        \u003cli\u003eSmart alarms \u0026amp; audio notifications\u003c\/li\u003e\n        \u003cli\u003ePortable speakers and music players\u003c\/li\u003e\n        \u003cli\u003eSound-reactive LEDs and VU meters\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"card\"\u003e\n      \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003ca href=\"\/collections\/power\"\u003ePower modules\u003c\/a\u003e for clean audio output\u003c\/li\u003e\n        \u003cli\u003e\n\u003ca href=\"\/collections\/displays\"\u003eOLED displays\u003c\/a\u003e for MP3 menus\u003c\/li\u003e\n        \u003cli\u003e\n\u003ca href=\"\/collections\/sensors\"\u003eSound sensors\u003c\/a\u003e for audio-reactive builds\u003c\/li\u003e\n      \u003c\/ul\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section card\"\u003e\n    \u003ch3\u003eFeatured audio categories\u003c\/h3\u003e\n    \u003cdiv class=\"grid cols-3\"\u003e\n\n      \u003cdiv\u003e\n        \u003ch4\u003eMicrophones \u0026amp; Sound Sensors\u003c\/h4\u003e\n        \u003cul\u003e\n          \u003cli\u003e\u003ca href=\"\/search?q=microphone+module\"\u003eElectret microphone modules\u003c\/a\u003e\u003c\/li\u003e\n          \u003cli\u003eAnalog \u0026amp; digital sound level sensors\u003c\/li\u003e\n          \u003cli\u003eAudio input modules for FFT \u0026amp; analysis\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv\u003e\n        \u003ch4\u003eSpeakers, Buzzers \u0026amp; Audio Output\u003c\/h4\u003e\n        \u003cul\u003e\n          \u003cli\u003e\n\u003ca href=\"\/search?q=speaker\"\u003eMini speakers\u003c\/a\u003e \u0026amp; audio transducers\u003c\/li\u003e\n          \u003cli\u003e\u003ca href=\"\/search?q=buzzer\"\u003eActive \u0026amp; passive buzzers\u003c\/a\u003e\u003c\/li\u003e\n          \u003cli\u003ePiezos for alarms and tones\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n\n      \u003cdiv\u003e\n        \u003ch4\u003eMP3 Players \u0026amp; Amplifiers\u003c\/h4\u003e\n        \u003cul\u003e\n          \u003cli\u003e\u003ca href=\"\/search?q=DFPlayer\"\u003eDFPlayer Mini MP3 modules\u003c\/a\u003e\u003c\/li\u003e\n          \u003cli\u003e\u003ca href=\"\/search?q=amplifier+module\"\u003eAudio amplifier boards\u003c\/a\u003e\u003c\/li\u003e\n          \u003cli\u003eVolume control \u0026amp; EQ modules\u003c\/li\u003e\n        \u003c\/ul\u003e\n      \u003c\/div\u003e\n\n    \u003c\/div\u003e\n\n    \u003cp class=\"note\"\u003e\u003cstrong\u003eTip:\u003c\/strong\u003e For clean audio output, use a separate power supply or add filtering capacitors to avoid noise from motors or digital circuits.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section card\"\u003e\n    \u003ch3\u003eAudio module chooser (quick guide)\u003c\/h3\u003e\n    \u003ctable\u003e\n      \u003ctr\u003e\n        \u003cth\u003eNeed\u003c\/th\u003e\n        \u003cth\u003eBest choice\u003c\/th\u003e\n        \u003cth\u003eNotes\u003c\/th\u003e\n      \u003c\/tr\u003e\n\n      \u003ctr\u003e\n        \u003ctd\u003eBasic beeps or alarms\u003c\/td\u003e\n        \u003ctd\u003e\u003cstrong\u003eActive buzzer\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eSimple on\/off sound—no complex code needed.\u003c\/td\u003e\n      \u003c\/tr\u003e\n\n      \u003ctr\u003e\n        \u003ctd\u003eSound detection\u003c\/td\u003e\n        \u003ctd\u003e\u003cstrong\u003eElectret mic module\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eUse for claps, noise sensing, and audio-triggered events.\u003c\/td\u003e\n      \u003c\/tr\u003e\n\n      \u003ctr\u003e\n        \u003ctd\u003ePlay music or voice prompts\u003c\/td\u003e\n        \u003ctd\u003e\u003cstrong\u003eDFPlayer Mini\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eSupports MP3, microSD, and UART control.\u003c\/td\u003e\n      \u003c\/tr\u003e\n\n      \u003ctr\u003e\n        \u003ctd\u003eHigh-quality speakers\u003c\/td\u003e\n        \u003ctd\u003e\u003cstrong\u003eAudio amplifier module\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eBoosts volume for 3W–20W speaker projects.\u003c\/td\u003e\n      \u003c\/tr\u003e\n\n      \u003ctr\u003e\n        \u003ctd\u003eAudio-reactive LEDs\u003c\/td\u003e\n        \u003ctd\u003e\u003cstrong\u003eSound level \/ envelope detector\u003c\/strong\u003e\u003c\/td\u003e\n        \u003ctd\u003eGreat for visualizers and VU meter effects.\u003c\/td\u003e\n      \u003c\/tr\u003e\n\n    \u003c\/table\u003e\n\n    \u003cp class=\"muted\"\u003eChoose modules based on voltage, impedance, microphone type, and required output power.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section card\"\u003e\n    \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n    \u003cul\u003e\n      \u003cli\u003e\n\u003cstrong\u003eDIY Soundbox Kit:\u003c\/strong\u003e DFPlayer + speaker + amp + buttons\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eAudio-Reactive LED Kit:\u003c\/strong\u003e microphone module + Neopixels\u003c\/li\u003e\n      \u003cli\u003e\n\u003cstrong\u003eVoice Assistant Starter:\u003c\/strong\u003e mic module + \u003ca href=\"\/collections\/esp\"\u003eESP32\u003c\/a\u003e + speaker\u003c\/li\u003e\n    \u003c\/ul\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section card faq-list\"\u003e\n    \u003ch3\u003eFAQ\u003c\/h3\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eAre these audio modules compatible with Arduino and ESP32?\u003c\/summary\u003e\n      \u003cp\u003eYes—most modules support analog, I²S, or UART control, making them easy to interface with Arduino, ESP32, and Raspberry Pi.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eCan I power a speaker directly from a microcontroller?\u003c\/summary\u003e\n      \u003cp\u003eNo—use an audio amplifier to safely drive speakers and avoid damaging GPIO pins.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eWhich module is best for playing MP3 files?\u003c\/summary\u003e\n      \u003cp\u003eThe DFPlayer Mini is the easiest option with microSD support and built-in decoding.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n    \u003cdetails\u003e\n      \u003csummary\u003eDo you ship nationwide?\u003c\/summary\u003e\n      \u003cp\u003eYes—fast PH shipping with same-day processing for in-stock items.\u003c\/p\u003e\n    \u003c\/details\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"section\"\u003e\n    \u003cp class=\"muted\"\u003eExplore related:\n      \u003ca href=\"\/collections\/sensors\"\u003eSound Sensors\u003c\/a\u003e •\n      \u003ca href=\"\/collections\/power\"\u003ePower Modules\u003c\/a\u003e •\n      \u003ca href=\"\/collections\/displays\"\u003eDisplays\u003c\/a\u003e\n    \u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e","products":[{"product_id":"audio-amplifier-pam8403-with-volume-control","title":"PAM8403 Audio Amplifier 3W+3W Stereo - w\/ Volume Control","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eTiny Stereo Amplifier with Volume Knob — PAM8403\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003ePAM8403 Audio Amplifier with Volume Control\u003c\/strong\u003e is one of the smallest and most popular stereo amplifier boards for maker projects. It outputs \u003cstrong\u003e2×3W\u003c\/strong\u003e of clean audio from a 5V USB supply, making it perfect for battery-powered Bluetooth speakers, Raspberry Pi audio, desktop gadgets, and portable sound systems.\u003c\/p\u003e\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e5V powered:\u003c\/strong\u003e Runs from USB, power banks, or 3×AA batteries\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eBuilt-in volume pot:\u003c\/strong\u003e Adjustable volume right on the board\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eFilterless Class D:\u003c\/strong\u003e No bulky output inductors needed\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUltra-compact:\u003c\/strong\u003e Barely larger than a postage stamp\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003eSmall amplifier comparison\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003cth\u003eVolume control\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePAM8403 (this)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2×3W\u003c\/td\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003ctd\u003eYes (built-in pot)\u003c\/td\u003e\n\u003ctd\u003eUSB\/battery speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=TPA2012\"\u003eTPA2012\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e2×2.1W\u003c\/td\u003e\n\u003ctd\u003e2.5–5.5V\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eCompact embedded audio\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=MAX98306\"\u003eMAX98306\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e2×3.7W\u003c\/td\u003e\n\u003ctd\u003e2.7–5.5V\u003c\/td\u003e\n\u003ctd\u003eNo (gain select)\u003c\/td\u003e\n\u003ctd\u003eLouder portable projects\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=MAX98357A\"\u003eMAX98357A\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e3W mono\u003c\/td\u003e\n\u003ctd\u003e2.5–5.5V\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003ctd\u003eI2S digital audio\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003ePAM8403\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Power\u003c\/th\u003e\n\u003ctd\u003e2×3W (4Ω, 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003ctd\u003e2 (stereo)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e2.5–5.5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eVolume Control\u003c\/th\u003e\n\u003ctd\u003eYes (onboard potentiometer)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eClass\u003c\/th\u003e\n\u003ctd\u003eClass D (filterless)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eCan I power it from a Raspberry Pi USB?\u003c\/strong\u003e Yes. It draws minimal current at idle and works great with Pi audio projects.\u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eIs 3W per channel loud enough?\u003c\/strong\u003e For a desktop speaker or small boombox, yes. For larger rooms, step up to the \u003ca href=\"\/search?q=MAX9744\"\u003eMAX9744 (20W)\u003c\/a\u003e or \u003ca href=\"\/search?q=TPA3116D2\"\u003eTPA3116D2 (50W)\u003c\/a\u003e.\u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Circuitrocks","offers":[{"title":"Default Title","offer_id":45761360003361,"sku":"2409","price":65.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/audio-amplifier-pam8403-with-volume-control-1.png?v=1781002489"},{"product_id":"mp3-music-player-mini-dfplayer","title":"MP3 Music Player Mini Module - DFPlayer Compatible","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eTiny MP3 Player Module for Embedded Projects\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eMP3 Music Player Mini\u003c\/strong\u003e is a compact MP3 decoder module that reads audio files from a microSD card and outputs analog audio. Control it via serial UART from an \u003ca href=\"\/search?q=arduino\"\u003eArduino\u003c\/a\u003e or other microcontroller to build music boxes, talking devices, notification systems, and automated announcements.\u003c\/p\u003e\n \u003ch3\u003eAudio playback comparison\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMP3 Mini (this)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMicroSD card\u003c\/td\u003e\n\u003ctd\u003eSerial UART\u003c\/td\u003e\n\u003ctd\u003eLong audio, music playback\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=VS1053+shield\"\u003eVS1053 Shield\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eMicroSD card\u003c\/td\u003e\n\u003ctd\u003eSPI (Arduino shield)\u003c\/td\u003e\n\u003ctd\u003eAdvanced audio projects, MIDI\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=audio+fx+adafruit\"\u003eAudio FX Board\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eOnboard flash (2–16 MB)\u003c\/td\u003e\n\u003ctd\u003eGPIO triggers\u003c\/td\u003e\n\u003ctd\u003eTriggered sound effects, no MCU\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=ISD1820\"\u003eISD1820\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eOnboard (20 sec)\u003c\/td\u003e\n\u003ctd\u003eButton \/ GPIO\u003c\/td\u003e\n\u003ctd\u003eVoice messages, greetings\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eDecoder\u003c\/th\u003e\n\u003ctd\u003eMP3 \/ WAV\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003ctd\u003eMicroSD card (FAT16\/FAT32)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003ctd\u003eSerial UART\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003eAnalog audio (line out)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003e3.3–5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812539818273,"sku":"AB108","price":65.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/mp3-music-player-mini-191.jpg?v=1689656457"},{"product_id":"mp3-music-shield-vs1053","title":"MP3 Music Shield VS1053 - Decoder + SD for Arduino","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eFull-Featured Audio Shield — VS1053 MP3\/MIDI\/OGG\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eVS1053 MP3 Music Shield\u003c\/strong\u003e is a full-featured audio codec shield for Arduino that decodes MP3, AAC, WMA, MIDI, OGG Vorbis, and WAV files from a microSD card. It also includes a headphone output jack and MIDI input, making it one of the most capable audio modules available for embedded projects.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eVS1053B (VLSI Solution)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eFormats\u003c\/th\u003e\n\u003ctd\u003eMP3, AAC, WMA, MIDI, OGG Vorbis, WAV, FLAC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003ctd\u003eMicroSD card\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eSPI (Arduino shield form factor)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003eStereo headphone jack\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMIDI Input\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812545683745,"sku":"ASVS1053MP","price":1185.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/mp3-music-shield-vs1053-209.jpg?v=1689656537"},{"product_id":"buzzer-module","title":"Buzzer Module for Arduino - Active Audible Alert 5V","description":"\u003cdiv class=\"product-copy\"\u003e\n\u003cp\u003eThe \u003cstrong\u003eBuzzer Module for Arduino\u003c\/strong\u003e is a 5V active buzzer breakout that beeps on a HIGH signal. No tone() library needed, no frequency math — just drive the input pin HIGH and it sounds. LOW = silent. Used for alarms, button feedback, alert tones, countdown timers, and any project that needs an audible signal.\u003c\/p\u003e\n\n\u003cp\u003eActive buzzer = internal oscillator. Drive it with any digital GPIO. Compatible with Arduino, ESP32, Raspberry Pi, and similar boards on 3.3–5V logic.\u003c\/p\u003e\n\n\u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eActive vs passive:\u003c\/strong\u003e this is an \u003cstrong\u003eactive buzzer\u003c\/strong\u003e. It plays one fixed tone (~2.3 kHz). For melodies or variable-pitch sound, use a \u003ca href=\"\/search?q=passive+buzzer\"\u003epassive buzzer\u003c\/a\u003e + Arduino tone() instead.\u003c\/div\u003e\n\n\u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOne-pin trigger:\u003c\/strong\u003e drive HIGH = beep, LOW = silent. No PWM required.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePre-mounted breakout:\u003c\/strong\u003e S (signal), VCC, GND pins. Plug into a breadboard and go.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5V tolerant:\u003c\/strong\u003e works on 3.3V (quieter) and 5V (loudest).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOnboard transistor switch:\u003c\/strong\u003e handles the buzzer current so the GPIO sees only signal load.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoud enough for room-scale alerts:\u003c\/strong\u003e ~85 dB at 10 cm.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat you can build\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDoor \/ motion alarm\u003c\/strong\u003e — PIR sensor triggers buzzer on motion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReverse-parking sensor\u003c\/strong\u003e — HC-SR04 + buzzer beeps faster as obstacle gets closer.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGame-show timer\u003c\/strong\u003e — countdown beep on the last 3 seconds.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eButton click feedback\u003c\/strong\u003e — short chirp on each press.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-battery \/ overheat alert\u003c\/strong\u003e — comparator or sensor crosses threshold, buzzer fires.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWiring (Arduino UNO)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eVCC → 5V\u003c\/li\u003e\n\u003cli\u003eGND → GND\u003c\/li\u003e\n\u003cli\u003eS (signal) → D8 (or any digital pin)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSample code\u003c\/h3\u003e\n\u003cpre style=\"background:#1a1a1a;color:#5cb030;padding:1rem;overflow-x:auto;font-family:'JetBrains Mono','SF Mono',Menlo,Consolas,monospace;font-size:.85em;border:0;border-radius:0;line-height:1.5\"\u003e\u003ccode\u003econst int BUZZER = 8;\n\nvoid setup() {\n  pinMode(BUZZER, OUTPUT);\n}\n\nvoid loop() {\n  digitalWrite(BUZZER, HIGH);\n  delay(200);                 \/\/ beep 200 ms\n  digitalWrite(BUZZER, LOW);\n  delay(800);                 \/\/ silent 800 ms\n}\u003c\/code\u003e\u003c\/pre\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eType: Active buzzer module (fixed-tone oscillator)\u003c\/li\u003e\n\u003cli\u003eOperating voltage: 3.3V – 5V DC\u003c\/li\u003e\n\u003cli\u003eResonant frequency: ~2.3 kHz (fixed)\u003c\/li\u003e\n\u003cli\u003eSound output: ~85 dB at 10 cm\u003c\/li\u003e\n\u003cli\u003eCurrent draw: ~25 mA at 5V\u003c\/li\u003e\n\u003cli\u003eTrigger: digital HIGH = sound, LOW = silent\u003c\/li\u003e\n\u003cli\u003eOnboard parts: piezo buzzer + NPN switching transistor + base resistor + power LED\u003c\/li\u003e\n\u003cli\u003eInterface pins: S (signal), VCC, GND\u003c\/li\u003e\n\u003cli\u003eBoard size: ~33 × 16 mm\u003c\/li\u003e\n\u003cli\u003eMounting: 1 fixing hole, 3mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eArduino UNO \/ Mega \/ Nano — works directly at 5V\u003c\/li\u003e\n\u003cli\u003eESP32 \/ ESP8266 — works at 3.3V (slightly quieter)\u003c\/li\u003e\n\u003cli\u003eRaspberry Pi (GPIO) — works at 3.3V\u003c\/li\u003e\n\u003cli\u003eMicro:bit — works on output pins\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"section card faq-list\"\u003e\n\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdetails\u003e\n\u003csummary\u003eActive or passive buzzer?\u003c\/summary\u003e\n\u003cp\u003eActive. Has a built-in oscillator. You only switch it on\/off — no tone() needed. For melodies and variable-pitch sound, buy a passive buzzer instead.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eCan I change the pitch?\u003c\/summary\u003e\n\u003cp\u003eNo. Active buzzers play one fixed frequency (~2.3 kHz). PWM does not change pitch on this module — only on\/off cycle. For pitch control use a passive buzzer.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill it work on 3.3V boards like ESP32?\u003c\/summary\u003e\n\u003cp\u003eYes, but slightly quieter. The transistor switch keeps GPIO load light, so any 3.3V or 5V controller drives it safely.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eHow loud is it?\u003c\/summary\u003e\n\u003cp\u003eAround 85 dB at 10 cm — loud enough for room-level alarms. Distance reduces volume quickly.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhy use this module over a bare buzzer?\u003c\/summary\u003e\n\u003cp\u003eThe module includes a transistor switch and base resistor so your GPIO drives only a logic signal, not the buzzer current. Bare buzzers can stress weaker GPIO pins.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWill this ship from Manila?\u003c\/summary\u003e\n\u003cp\u003eYes — all stock ships from our Quezon City warehouse. Order before 4 PM weekdays for same-day cutoff via J\u0026amp;T or LBC.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003cdetails\u003e\n\u003csummary\u003eWhat's your return policy?\u003c\/summary\u003e\n\u003cp\u003e7-day inspection window for DOA units. Email proof of issue and we'll ship a replacement or refund. Used \/ installed parts aren't returnable unless faulty.\u003c\/p\u003e\n\u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eWhat's in the box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e1 × Buzzer Module (active, 5V, breakout PCB with S\/VCC\/GND header)\u003c\/li\u003e\n\u003cli\u003e\u003cem\u003eJumper wires and controller board sold separately\u003c\/em\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812551483681,"sku":"AF170","price":55.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/buzzer-module-for-arduino-227.jpg?v=1689656609"},{"product_id":"audio-analyzer-msgeq7-for-arduino","title":"Audio Analyzer MSGEQ7","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003e7-Band Audio Spectrum Analyzer — MSGEQ7 Module\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eMSGEQ7 Audio Analyzer\u003c\/strong\u003e splits an audio signal into \u003cstrong\u003e7 frequency bands\u003c\/strong\u003e (63 Hz, 160 Hz, 400 Hz, 1 kHz, 2.5 kHz, 6.25 kHz, 16 kHz) and outputs the amplitude of each band as an analog voltage. Feed the output into an \u003ca href=\"\/search?q=arduino\"\u003eArduino\u003c\/a\u003e or \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e to build music visualizers, LED spectrum displays, VU meters, and reactive lighting installations.\u003c\/p\u003e\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eLED spectrum analyzer:\u003c\/strong\u003e Drive an \u003ca href=\"\/search?q=LED+strip\"\u003eLED strip\u003c\/a\u003e or \u003ca href=\"\/search?q=LED+matrix\"\u003eLED matrix\u003c\/a\u003e that dances to music\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eVU meter:\u003c\/strong\u003e Classic volume-level indicator\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eReactive lighting:\u003c\/strong\u003e Room LEDs that pulse with bass or treble\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAudio research:\u003c\/strong\u003e Analyze frequency content of signals\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eMSGEQ7\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eFrequency Bands\u003c\/th\u003e\n\u003ctd\u003e7 (63 Hz – 16 kHz)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003eAnalog voltage (DC) per band\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eAnalog output + strobe\/reset digital pins\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Circuitrocks","offers":[{"title":"Default Title","offer_id":45812560560417,"sku":"DFR0126","price":2275.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/audio-analyzer-msgeq7-for-arduino-white.jpg?v=1778911456"},{"product_id":"audio-amplifier-lm386amp-module-arduino-compatible","title":"DFRobot LM386 Audio Amplifier Module - Arduino Compatible","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003cp\u003eThis 386AMP audio amplifier module has 20 voltage gain and uses the National Semiconductor LM386 audio power amplifier chip.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eIn the 6V power supply, it's static power consumption is only 24mW, the module is suitable for battery-powered. The 386AMP audio amplifier can be connected to a MIC or MP3. It is ideal for robot human-machine voice interaction and sound amplification.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eSPECIFICATION\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003ePower supply:4-12V\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutput power:VS = 6V, RL = 8W,P=325mW，Peak output 500mW\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eVoltage Gain:VS = 6V, f = 1 kHz，Av=26dB\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBand width:300KHz\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSize:45x30mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eDOCUMENTS\u003c\/span\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"http:\/\/www.dfrobot.com\/wiki\/index.php?title=386AMP_audio_amplifier_Module_(SKU:_DFR0064)\" style=\"cursor: pointer;\"\u003eWiki\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"http:\/\/www.dfrobot.com\/image\/data\/DFR0064\/386AMP%20Module%20SCH%20DFR0064.pdf\" style=\"cursor: pointer;\"\u003eSchematic\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e​\u003cspan style=\"font-weight: bold;\"\u003eSHIPPING LIST\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003e​386AMP audio amplifier module   x1\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLoud speaker   x1\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812563935521,"sku":"DFR0064","price":1335.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/audio-amplifier-lm386amp-module-arduino-compatible-circuitrocks.jpg?v=1780999754"},{"product_id":"voice-recorder-module","title":"Voice Record Module ISD1820","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eRecord and Play Voice Messages — ISD1820 Module\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eISD1820 Voice Record Module\u003c\/strong\u003e records up to \u003cstrong\u003e20 seconds\u003c\/strong\u003e of audio and plays it back with the press of a button — no microcontroller needed. Ideal for greeting cards, doorbells, interactive toys, museum exhibits, and any project that needs a simple record-and-play voice message.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eISD1820\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eRecording Time\u003c\/th\u003e\n\u003ctd\u003e~20 seconds\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eControl\u003c\/th\u003e\n\u003ctd\u003eOnboard buttons (Record, Play, Play-E) + GPIO\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eMicrophone\u003c\/th\u003e\n\u003ctd\u003eOnboard electret\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSpeaker Output\u003c\/th\u003e\n\u003ctd\u003e0.5W (8Ω speaker)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003e3–5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Circuitrocks","offers":[{"title":"Default Title","offer_id":45812565541153,"sku":"AB404","price":109.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/voice-recorder-module-white.jpg?v=1778912256"},{"product_id":"sound-recorder-isd1760","title":"ISD1760 Sound Recorder Module - 75-second Voice Record\/Play","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003cp\u003eThe Sound Recorder Module uses the ISD1760 Chip to record and store voice signals. ISD1700 series recording chip is a kind of high integration, high performance chip. This module can be multiple recording, the sampling rate can be set to 6k or 8k by the on-board resistor. There are also some inside sounds to remind the user working state of the module, such as record beginning, record stopping, record erasing , etc. The recording data is stored in the FLASH, without any compression to ensure a good quality.     You can easily control this module manually or by Arduino. There are some keys on the module including “REC”,”PLAY”,”EARSE”, you can control the module with these keys. The module can be also controlled by SPI, with an Arduino, you can control the detail function such as the analog path configuration, so you can integrated this module to your sound related applications.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecification\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eSize: 52x 55mm\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower supply: DC5V\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eThe recording time: 6K\/75Sec, 8K\/60Sec\u003c\/li\u003e\n\u003cli\u003eFrequency 6 KHz or 8 KHz\u003c\/li\u003e\n\u003cli\u003ePower LED, IC LED\u003c\/li\u003e\n\u003cli\u003eSimple operation , not need to SCM or other module work direct\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOutput all PIN For Chip control , Convenient for control\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eDownload\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"http:\/\/www.elecrow.com\/download\/ISD17600%20Series%20datasheet.pdf\"\u003eISD1760 Datasheet\u003c\/a\u003e\u003ca href=\"http:\/\/www.elecrow.com\/download\/ISD17600%20Series%20datasheet.pdf\"\u003e\u003cbr\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"http:\/\/www.elecrow.com\/download\/ISD17600%20Manual.pdf\"\u003eElecrow Sound Recorder Manual\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"http:\/\/www.elecrow.com\/wiki\/index.php?title=Sound_Recorder-_ISD1760\"\u003eWiki link\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812565672225,"sku":"AB373","price":867.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/sound-recorder-isd1760-282.jpg?v=1689656848"},{"product_id":"audio-amplifier-tda7297-module","title":"TDA7266 Audio Amplifier Module - Stereo 5W+5W Bridge","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDual-Channel Speaker Amplifier — TDA7266 Module\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eTDA7266 Audio Amplifier Module\u003c\/strong\u003e is a Class AB stereo amplifier capable of driving a pair of speakers at moderate power. Class AB topology provides good sound quality with a warmer character compared to Class D digital amps — favored in some Hi-Fi and audio-purist applications.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eTDA7266 (STMicroelectronics)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Power\u003c\/th\u003e\n\u003ctd\u003e2×7W (4Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003ctd\u003e2 (stereo)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eClass\u003c\/th\u003e\n\u003ctd\u003eClass AB\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e3–18V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812565934369,"sku":"AA027","price":142.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/audio-amplifier-tda7266-module-284.jpg?v=1689656857"},{"product_id":"wave-shield-adafruit-for-arduino-kit-v1-1","title":"Adafruit Wave Shield v1.1 Kit for Arduino - WAV Audio Player","description":"\u003cdiv class=\"product-copy\"\u003e\n\u003cp\u003e\u003cstrong\u003eAdafruit Wave Shield for Arduino Kit v1.1\u003c\/strong\u003e is an official Adafruit product available from Circuitrocks, an official distributor of Adafruit. An Arduino audio shield kit for playing uncompressed WAV files from an SD card with onboard audio output circuitry.\u003c\/p\u003e\n\n\u003ch2\u003eWhy choose this Adafruit board or module?\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eAdds straightforward audio playback to ATmega328-based Arduino projects\u003c\/li\u003e\n\u003cli\u003ePlays WAV files from SD card\u003c\/li\u003e\n\u003cli\u003eIncludes headphone and speaker output options\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eWhat you can build\u003c\/h2\u003e\n\u003cp\u003eTalking props, Sound effects triggers, Interactive installations.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical description\u003c\/h2\u003e\n\u003cp\u003eAdafruit Wave Shield for Arduino Kit v1.1 is designed for makers, engineers, and educators who need a genuine Adafruit part with dependable documentation, known compatibility, and easy access to official support material. It is a practical choice for prototyping, testing, and repeatable electronics builds.\u003c\/p\u003e\n\n\u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003ctable\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003cth\u003eAudio format\u003c\/th\u003e\n\u003ctd\u003eUncompressed WAV\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePlayback\u003c\/th\u003e\n\u003ctd\u003eUp to 22KHz, 12-bit DAC output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStorage\u003c\/th\u003e\n\u003ctd\u003eSD\/MMC card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003ctd\u003eATmega328-based Arduino boards\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003e3.5mm headphone jack and speaker output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eThrough-hole kit\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003ePinout \u0026amp; power notes\u003c\/h2\u003e\n\u003cp\u003eDesigned for ATmega328-based Arduino boards. Not for Zero, Due, Mega, or Leonardo according to Adafruit.\u003c\/p\u003e\n\n\u003ch2\u003eWhat’s in the box\u003c\/h2\u003e\n\u003cp\u003eWave Shield kit parts.\u003c\/p\u003e\n\n\u003ch2\u003eOfficial resources\u003c\/h2\u003e\n\u003cp\u003eManufacturer product page: \u003ca href=\"https:\/\/www.adafruit.com\/product\/94\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ehttps:\/\/www.adafruit.com\/product\/94\u003c\/a\u003e\u003cbr\u003e\nGuide \/ tutorial: \u003ca href=\"https:\/\/learn.adafruit.com\/adafruit-wave-shield-audio-shield-for-arduino\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ehttps:\/\/learn.adafruit.com\/adafruit-wave-shield-audio-shield-for-arduino\u003c\/a\u003e\u003cbr\u003e\nDatasheet \/ downloads \/ documentation: \u003ca href=\"https:\/\/learn.adafruit.com\/adafruit-wave-shield-audio-shield-for-arduino\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ehttps:\/\/learn.adafruit.com\/adafruit-wave-shield-audio-shield-for-arduino\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eQ: Does this play MP3 files?\u003c\/strong\u003e\n \u003cp\u003eA: No. This shield is designed for uncompressed WAV playback.\u003c\/p\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cp\u003eNeed this for a student build, prototype, or production-ready electronics project? Circuitrocks helps makers, schools, and developers source genuine Adafruit products with access to official documentation and manufacturer references.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45812569604385,"sku":"94","price":1187.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/wave-shield-adafruit-for-arduino-kit-v1-1-1.jpg?v=1781003084"},{"product_id":"adc-16-bit-4-channel-ads1115-with-programmable-gain-amplifier","title":"ADS1115 16-Bit 4-Channel ADC w\/ PGA - I2C Breakout","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003cp\u003eIf you are having trouble with lacking Analog pins, you could find this module handy in adding extra analog pins.\u003c\/p\u003e\n\u003cp\u003eThis module operates with power from 2.0V to 5.5V, and with low current consumption at only 150µA, and has auto shutdown function.\u003c\/p\u003e\n\u003cp\u003eYou could also program the data rate from 8SPS(Samples per second) to 860 SPS. It is a component that uses the I2C protocol and can be addressed from 0x48 to 0x4b using a jumper cap. It has four single-ended or two differential inputs.\u003c\/p\u003e\n\u003cp\u003eThis module has internal low-drift voltage reference, an internal oscillator, and an internal PGA to do the readings more accurately.\u003c\/p\u003e\n\u003cp\u003eTo interface this with your Arduino, you need to connect it to the Arduino's I2C (SDA\/SCL) pins as well as having the power\u003c\/p\u003e\n\u003cp\u003e(VCC\/GND) for this module.\u003c\/p\u003e\n\u003cp\u003eYou may use this with Raspberry Pi, NodeMCU, and another microcontroller that lacks analog pins.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812574421281,"sku":"AB080","price":195.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/adc-16-bit-4-channel-ads1115-with-programmable-gain-amplifier-319.jpg?v=1689657011"},{"product_id":"speech-synthesis-shield-for-arduino","title":"DFRobot Speech Synthesis Shield for Arduino - DFR0273","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003cp\u003eEver want your robot could speak up and report what's going on? Or have your plants say if it feels thirsty? The Speech Synthesis Shield for Arduino makes it an easy way to give voice to your robots and projects.\u003c\/p\u003e\n\u003cp\u003eThe Speech Synthesis Shield is designed to be easily stacked upon any standard arduinos. It uses a XFS5051CE speech synthesis chip from IFLYTEK which combines world leading technology and high degree of integration. Languages such as Chinese and English are both supported, dialets such as Cantonese and mixed speech are also functional with this module. The navigation mode allows proprietary reading of places, especially formatted for weather forecast with broadcast voice. Three interfaces are available for use with this module: UART, IIC and SPI.\u003c\/p\u003e\n\u003cp\u003eNote: Speaker is not included.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ciframe src=\"\/\/www.youtube.com\/embed\/VohDTIHjU4c\" width=\"640\" height=\"360\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eAPPLICATIONS:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVoice reminder\u003c\/li\u003e\n\u003cli\u003eSpeaking out  the temperature or the humidity of your room instead of data displaying\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eGreeting you back home to make you feel a nice day\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eand EVEN speak your program out when there is no LCDs for you to check\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cspan style=\"font-weight: bold;\"\u003eSPECIFICATION:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cul\u003e\n\u003cli\u003eGeneral or  pin Header Connector\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eRun\/Prog switch contained\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBaud rate: 4800,9600,57600,115200\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLED Busy Indicator\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eVoltage: +5V\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSize: 56*53mm(2.20x2.09\")\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: 26 gram \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e11 grades of speaking speed\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBe able to speak Chinese in the way of localism or not\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBe able to speak English\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBoth male and female voice supported \u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eChinese Family name available\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSymbol reading available\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv\u003e\u003cspan style=\"font-weight: bold;\"\u003eDOCUMENTS:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.dfrobot.com\/wiki\/index.php\/Speech_Synthesis_Shield_SKU:DFR0273\"\u003eWiki Doc\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/github.com\/Arduinolibrary\/DFRobot_Speech_Synthesis_Sheild_DFR0273\/blob\/master\/SpeechSynthesisV2.rar?raw=true\"\u003eArduino library\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/Arduinolibrary\/DFRobot_Speech_Synthesis_Sheild_DFR0273\/blob\/master\/Speech%20Synthesis%20V1.1%20sch.pdf?raw=true\"\u003eSchematic\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812580122913,"sku":"DFR0273","price":2399.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/speech-synthesis-shield-for-arduino-339.jpg?v=1689657102"},{"product_id":"digital-speaker-module","title":"DFRobot Digital Speaker Module - I2C Audio Output","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003ePractical Electronics Module for Maker, Student, and Prototype Builds\u003c\/h2\u003e\n\n \u003cp\u003e\n The \u003cstrong\u003eDigital Speaker Module\u003c\/strong\u003e is a practical \u003cstrong\u003eelectronics module\u003c\/strong\u003e from \u003cstrong\u003eCircuitrocks\u003c\/strong\u003e for students, makers, and repair-friendly builds. It fits well in projects that need general project use, while keeping setup straightforward for testing and prototype work.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Compared with generic parts, this product stands out through details such as \u003cstrong\u003eelectronics module\u003c\/strong\u003e. That makes it a solid choice for Arduino, ESP32, Raspberry Pi, robotics, motion-control, and workshop projects where matching the right part from the start saves time.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e Always match the electrical rating, size, and control method of this part with the rest of your setup before full-power testing.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eGood for prototype work:\u003c\/strong\u003e adds useful value when choosing parts for a build\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy to integrate:\u003c\/strong\u003e adds useful value when choosing parts for a build\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful in many student builds:\u003c\/strong\u003e adds useful value when choosing parts for a build\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eA practical spare for repairs and testing:\u003c\/strong\u003e adds useful value when choosing parts for a build\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n This product is a good fit for general maker builds, testing, prototypes, and controller-based projects. It works especially well in student projects, quick repairs, and prototype builds where part availability, straightforward hookup, and predictable results matter.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n It fits well in Arduino, ESP32, and Raspberry Pi projects, especially when matched with the right power source and controller.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Popular add-ons depend on your build, but matching controllers, power supplies, and compatible motion parts usually make integration easier. You can also compare it with \u003ca href=\"https:\/\/circuit.rocks\/products\/motor-driver-pwm-frequency-adjustable-pulse-generator-ne555-module\"\u003eFrequency Adjustable Pulse Generator NE555 Module\u003c\/a\u003e, \u003ca href=\"https:\/\/circuit.rocks\/products\/dc-fan-module-gravity\"\u003eDC Fan Module Gravity\u003c\/a\u003e.\n \u003c\/p\u003e\n\n \u003ch3\u003eComparison table\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eCompared Product\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003cth\u003eKey Difference\u003c\/th\u003e\n\u003cth\u003eDirect Link\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/circuit.rocks\/products\/motor-driver-pwm-frequency-adjustable-pulse-generator-ne555-module\"\u003eFrequency Adjustable Pulse Generator NE555 Module\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egeneral project use\u003c\/td\u003e\n\u003ctd\u003eble\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/circuit.rocks\/products\/motor-driver-pwm-frequency-adjustable-pulse-generator-ne555-module\"\u003eView product\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/circuit.rocks\/products\/dc-fan-module-gravity\"\u003eDC Fan Module Gravity\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egeneral project use\u003c\/td\u003e\n\u003ctd\u003eFan Module Gravity\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/circuit.rocks\/products\/dc-fan-module-gravity\"\u003eView product\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/circuit.rocks\/products\/pwm-frequency-and-duty-adjustable-module\"\u003ePWM Frequency And Duty Adjustable Module- SG3525\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003egeneral project use\u003c\/td\u003e\n\u003ctd\u003ePWM, ble\u003c\/td\u003e\n\u003ctd\u003e\u003ca href=\"https:\/\/circuit.rocks\/products\/pwm-frequency-and-duty-adjustable-module\"\u003eView product\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eDigital Speaker Module\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003ctd\u003eCircuitrocks\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct Type\u003c\/th\u003e\n \u003ctd\u003eElectronics Module\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003ePrimary SKU\u003c\/th\u003e\n \u003ctd\u003eFIT0449\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eKey Specs\u003c\/th\u003e\n \u003ctd\u003ePWM\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct URL\u003c\/th\u003e\n \u003ctd\u003ehttps:\/\/circuit.rocks\/products\/digital-speaker-module\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; power notes\u003c\/h3\u003e\n \u003cp\u003e\n Confirm voltage, interface type, and load requirements before wiring it into your project.\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e\n 1 × Digital Speaker Module\n \u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan this work with Arduino or similar boards?\u003c\/strong\u003e\n Yes, as long as the voltage, control method, and wiring match your controller and power supply.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eShould I power it directly from a controller pin?\u003c\/strong\u003e\n For small signal-only modules that may be fine, but motors, pumps, solenoids, and relays should use a proper driver or external supply.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs this good for student and prototype builds?\u003c\/strong\u003e\n Yes. It fits well in testing, learning, and proof-of-concept projects when matched with the right support parts.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I choose the right version?\u003c\/strong\u003e\n Check the size, voltage, torque, speed, current, and fit details that matter most for your project.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812590510369,"sku":"FIT0449","price":630.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/digital-speaker-module-383.jpg?v=1689657295"},{"product_id":"weight-sensor-amplifier-hx711","title":"HX711 Weight Sensor Amplifier - 24-Bit Load Cell ADC","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Weight and Force in Embedded Systems\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eWeight Sensor Amplifier HX711\u003c\/strong\u003e is a load cell sensor designed for scales, dosing systems, and force measurement. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eCategory:\u003c\/strong\u003e load cells weight sensors.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Load cells need a proper amplifier such as an HX711 and solid mechanical mounting. Small twists or uneven force can change the reading.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e scales, hopper monitoring, dispensing, and force measurement\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight Sensor Amplifier HX711\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eload cell sensor\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/weight-sensor-kit\"\u003eWeight Sensor Kit 5KG\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eload cell sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/weight-sensor-scales-kit-hx711-5kg\"\u003eWeight Sensor Scales Kit HX711 5KG\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eload cell sensor\u003c\/td\u003e\n\u003ctd\u003emodel HX711\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/weight-load-cell-5kg-straight-bar-2\"\u003eWeight Load Cell 5kg Straight Bar\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eload cell sensor\u003c\/td\u003e\n\u003ctd\u003eweight sensing, pressure sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for digital scales, smart bins, hopper monitors, postal scales, and dosing rigs.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include an HX711 amplifier, a rigid frame, and mounting hardware, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eWeight Sensor Amplifier HX711\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003eload cells weight sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eCheck the pin labels on the \u003cstrong\u003eWeight Sensor Amplifier HX711\u003c\/strong\u003e and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module. Load cells need a proper amplifier such as an HX711 and solid mechanical mounting. Small twists or uneven force can change the reading.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Weight Sensor Amplifier HX711\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Weight Sensor Amplifier HX711 measure?\u003c\/strong\u003e\n It is designed to measure force, bend, muscle activity, or weight.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDo I need extra hardware?\u003c\/strong\u003e\n Often yes. Force and weight sensors are commonly paired with an amplifier or conditioning board before they connect to a microcontroller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812593557793,"sku":"AB246","price":55.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/weight-sensor-amplifier-hx711-circuitrocks.jpg?v=1781000335"},{"product_id":"bluetooth-audio-receiver-decoding-player","title":"Bluetooth Audio Receiver Decoding Player Module","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003cp\u003eThis is a bluetooth audio receiver module with usb and TF card decoding. Usually it’s can be used as a mp3 player, just a TF card and DC 5V power supply. It has five buttons for you to change mode or achieve other audio control like volume adjustment. It has two modes : music mode and bluetooth device mode. Just press the mode button for switching. When it switch into Bluetooth device mode, it can launch a bluetooth signal, when you connect other device with it, the blue led will stop flashing for a while. Simple to use with clear sound. You’d better not miss it.\u003c\/p\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eFEATURES:\u003c\/span\u003e\u003cul\u003e\n\u003cli\u003eAudio input mode: 1 Bluetooth receiver 2.USB decode and play 3.TF card decoding playback\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eSupport playback format: MP3, WMA, WAV, FLAC, APE (APE only support for FAST encoded format)\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePower Supply: DC5V\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePreamp output can be directly promote the headset and also use with a power amplifier\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003ePACKAGE LIST:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBluetooth Audio Receiver Decoding Player x 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812618690849,"sku":"CCB25011M","price":135.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/bluetooth-audio-receiver-decoding-player-496.jpg?v=1689657782"},{"product_id":"bone-conductor-transducer-with-wires-8-ohm-1-watt","title":"Adafruit Bone Conductor Transducer 8 Ohm 1W - 1674","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eAdd Reliable Sensing to Your Next Electronics Build\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eBone Conductor Transducer with Wires 8 Ohm 1 Watt\u003c\/strong\u003e is an audio module designed for sensing, logging, and automation. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eFrequency response:\u003c\/strong\u003e 300-19,000 Hz (but will vary with what you use as the transducer surface); \u003cstrong\u003eDimensions:\u003c\/strong\u003e 14mm x 21.5mm \/ 0.6\" x .8\"; \u003cstrong\u003eLe:\u003c\/strong\u003e 1.26 mH.\u003c\/p\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eOperating frequency:\u003c\/strong\u003e 300-19,000 Hz (but will vary with what you use as the transducer surface)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact size:\u003c\/strong\u003e 14mm x 21.5mm \/ 0.6\" x .8\"\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 1.26 mH\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e Useful in sensing, logging, and automation projects\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBone Conductor Transducer with Wires 8 Ohm 1 Watt\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eaudio module\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/transducer-medium-surface-with-wires-4-ohm-3-watt\"\u003eTransducer Medium Surface with Wires 4 Ohm 3 Watt\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eprototyping module\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for general sensing, logging, and automation builds.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include breadboards, jumper wires, displays, enclosures, and logging modules, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eBone Conductor Transducer with Wires 8 Ohm 1 Watt\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eFrequency response\u003c\/th\u003e\n\u003ctd\u003e300-19,000 Hz (but will vary with what you use as the transducer surface)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDimensions\u003c\/th\u003e\n\u003ctd\u003e14mm x 21.5mm \/ 0.6\" x .8\"\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eLe\u003c\/th\u003e\n\u003ctd\u003e1.26 mH\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eRe\u003c\/th\u003e\n\u003ctd\u003e5.8 ohms\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eFs\u003c\/th\u003e\n\u003ctd\u003e1,600 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSPL\u003c\/th\u003e\n\u003ctd\u003e90.1 dB 1W\/1m (but will vary with what you use as the transducer surface)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e9.6g\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eImpedance\u003c\/th\u003e\n\u003ctd\u003e8 ohm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eCheck the pin labels on the \u003cstrong\u003eBone Conductor Transducer with Wires 8 Ohm 1 Watt\u003c\/strong\u003e and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Bone Conductor Transducer with Wires 8 Ohm 1 Watt\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Bone Conductor Transducer with Wires 8 Ohm 1 Watt measure?\u003c\/strong\u003e\n It is designed to measure vibration, sound, or impact.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat affects accuracy?\u003c\/strong\u003e\n Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45812646150433,"sku":"1674","price":853.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/bone-conductor-transducer-with-wires-8-ohm-1-watt-585.jpg?v=1689658155"},{"product_id":"mems-microphone-sound-sensor","title":"SparkFun MEMS Microphone Breakout INMP401 (ADMP401) - Analog Audio","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Sound and Vibration for Smarter Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eMEMS Microphone Breakout INMP401 ADMP401 SparkFun\u003c\/strong\u003e is a ph sensor with analog output designed for sound detection, vibration alerts, and machine monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eFrequency Range:\u003c\/strong\u003e 100 Hz – 15 kHz; \u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 1.5–3.3V; \u003cstrong\u003eOutput:\u003c\/strong\u003e Analog.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Water-quality sensors usually need calibration solutions and regular probe care. Probe condition and temperature can affect the reading.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMain chip:\u003c\/strong\u003e INMP401 \/ ADMP401 MEMS microphone\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eController output:\u003c\/strong\u003e Analog\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensing range:\u003c\/strong\u003e 100 Hz – 15 kHz\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 1.5–3.3V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e MEMS (omnidirectional)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMEMS Microphone Breakout INMP401 ADMP401 SparkFun\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/mems-silicon-microphone-breakout-spw2430-adafruit\"\u003eMEMS Silicon Microphone Breakout SPW2430 Adafruit\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, breakout-board format\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/electret-microphone-amplifier-max9814-with-auto-gain-control\"\u003eElectret Microphone Amplifier - MAX9814 with Auto Gain Control\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/usb-microphone-for-raspberry-pi-2\"\u003eUSB Microphone for Raspberry Pi\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for clap switches, knock locks, vibration alarms, sound level demos, and machine monitoring.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include an Arduino or ADC-capable board, jumper wires, and a stable power source, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eMEMS Microphone Breakout INMP401 ADMP401 SparkFun\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eINMP401 \/ ADMP401 MEMS microphone\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eFrequency Range\u003c\/th\u003e\n\u003ctd\u003e100 Hz – 15 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e1.5–3.3V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eMEMS (omnidirectional)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003eacoustic sound vibration sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Water-quality sensors usually need calibration solutions and regular probe care. Probe condition and temperature can affect the reading.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × MEMS Microphone Breakout INMP401 ADMP401 SparkFun\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the MEMS Microphone Breakout INMP401 ADMP401 SparkFun measure?\u003c\/strong\u003e\n It is designed to measure sound level, audio activity, or optical fingerprint data.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"SparkFun","offers":[{"title":"Default Title","offer_id":45812651786529,"sku":"BOB-09868","price":655.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/mems-microphone-sound-sensor-1.jpg?v=1781005565"},{"product_id":"thermocouple-amplifier-max31855-breakout-board-max6675-upgrade-v2-0","title":"Adafruit MAX6675 Thermocouple Amplifier Breakout","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMeasure Temperature with a Sensor Made for Embedded Builds\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eThermocouple Amplifier MAX6675 breakout board\u003c\/strong\u003e is a thermocouple module with analog output designed for temperature logging, thermal control, weather nodes, and equipment monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eInterface:\u003c\/strong\u003e SPI.\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Sensor response time depends on airflow, mounting, and thermal contact. Keep heat sources and self-heating from nearby parts in mind.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eInternal temperature reading:\u003c\/strong\u003e Internal temperature reading\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eKey feature:\u003c\/strong\u003e SPI data output requires any 3 digital I\/O pins.\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e 20mm\/0.8in\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensor size:\u003c\/strong\u003e 20mm\/0.8in\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e SPI\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eThermocouple Amplifier MAX6675 breakout board\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ethermocouple module with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/thermocouple-amplifier-max31856-breakout-adafruit-universal-2\"\u003eThermocouple Amplifier MAX31856 Breakout Adafruit Universal\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ethermocouple module with SPI\u003c\/td\u003e\n\u003ctd\u003etemperature sensing, breakout-board format\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/thermocouple-k-type\"\u003eThermocouple K Type\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ethermocouple module\u003c\/td\u003e\n\u003ctd\u003etemperature sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/max6675-temperature-sensor-thermocouple-module\"\u003eMAX6675 Temperature Sensor Thermocouple Module\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ethermocouple module with digital output\u003c\/td\u003e\n\u003ctd\u003edigital output, temperature sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for thermostats, incubators, weather stations, battery packs, 3D printer enclosures, and cold-chain logging.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include probe mounts, thermal paste if needed, and a data logger, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eThermocouple Amplifier MAX6675 breakout board\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e20mm\/0.8in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eLength\u003c\/th\u003e\n\u003ctd\u003e20mm\/0.8in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003ctd\u003e3.28mm\/0.12in\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWeight\u003c\/th\u003e\n\u003ctd\u003e1.33g\/0.05oz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eSPI\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003ethermal heat temperature sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then wire \u003cstrong\u003eSCK\u003c\/strong\u003e, \u003cstrong\u003eMISO\u003c\/strong\u003e, \u003cstrong\u003eMOSI\u003c\/strong\u003e, and \u003cstrong\u003eCS\u003c\/strong\u003e to your controller. Keep wires short for stable reads. Sensor response time depends on airflow, mounting, and thermal contact. Keep heat sources and self-heating from nearby parts in mind.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × Thermocouple Amplifier MAX6675 breakout board\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the Thermocouple Amplifier MAX6675 breakout board measure?\u003c\/strong\u003e\n It is designed to measure temperature.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this SPI sensor?\u003c\/strong\u003e\n This version uses SPI, so you usually connect power plus SCK, MISO, MOSI, and chip select.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat affects accuracy?\u003c\/strong\u003e\n Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45812658831649,"sku":"AB414","price":249.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/thermocouple-amplifier-max31855-breakout-board-max6675-upgrade-v2-0-1.jpg?v=1781005592"},{"product_id":"audio-tda8932-amplifier-board-35w","title":"TDA8932 Audio Amplifier Board 35W - Mono Class D Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003e35W Digital Amplifier Board — TDA8932\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eTDA8932 35W Amplifier Board\u003c\/strong\u003e is a single-channel Class D amplifier that delivers up to \u003cstrong\u003e35W\u003c\/strong\u003e into a 4Ω speaker. It's a solid mid-power option for DIY speaker builds, PA systems, and subwoofer amplification.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eTDA8932 (NXP)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Power\u003c\/th\u003e\n\u003ctd\u003e35W (4Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003ctd\u003e1 (mono)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eClass\u003c\/th\u003e\n\u003ctd\u003eClass D\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e10–30V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45812670890273,"sku":"2444","price":215.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/audio-tda8932-amplifier-board-35w-686.jpg?v=1689658590"},{"product_id":"buzzer-crowtail","title":"Crowtail Buzzer - Plug-and-Play Sound Output Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eCrowtail Buzzer Module — Grove-Compatible Active Buzzer\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eCrowtail Buzzer\u003c\/strong\u003e is a plug-and-play active buzzer in the Crowtail (Grove-compatible) form factor. Just connect to a digital pin on your Crowtail base shield and send a HIGH signal to beep. No soldering, no breadboarding — perfect for classroom projects and rapid prototyping.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eActive buzzer (Crowtail\/Grove connector)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eDigital\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e3.3–5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eConnector\u003c\/th\u003e\n\u003ctd\u003e4-pin Crowtail (Grove-compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Elecrow","offers":[{"title":"Default Title","offer_id":45812680130849,"sku":"CT0003BU","price":19.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/buzzer-crowtail-white.jpg?v=1778911608"},{"product_id":"hifiberry-dac-hat-standard-rca","title":"HiFiBerry DAC+ HAT Standard RCA - Pi Audio","description":"\u003cdiv class=\"product-copy\"\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eThe HiFiBerry DAC+ is a high-resolution digital-to-analog converter for the Raspberry Pi 2 Model B and the A+ \/ B+ Models. \u0026amp;nbsp;This product also works with the Pi 3!\u003c\/div\u003e\n\u003cdiv\u003eThis is a special sound card for the Raspberry Pi, that is optimized for one specific use case: the best audio playback quality.\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003eThis is the Standard RCA version which uses RCA connectors that you know from your normal stereo equipment. The HiFiBerry, like all Pi HATs, sits right on top of your Pi's GPIO pins with no additional cables needed and integrated EEPROM for automatic configuration.\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cspan style=\"font-weight: bold;\"\u003eFeatures:\u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv\u003e\u003cul\u003e\n\u003cli\u003eDedicated 192kHz\/24bit high-quality Burr-Brown DAC for best sound quality\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHardware volume control. You can control the output volume using “alsamixer” or any application that supports ALSA mixer controls\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eDirectly powered from the Raspberry Pi, no additional power supply\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eUltra-low-noise voltage regulator for optimal audio performance\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ex4 M2.5x12mm spacers to fix the board onto the Raspberry Pi.\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003cdiv\u003eThis board is ONLY compatible with the Raspberry Pi 2 Model B, Pi 3 Model B, and the Pi Models A+ and B+! While we haven't tested it with the Pi Zero, it likely works with it!\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ciframe src=\"\/\/www.youtube.com\/embed\/8WbutwR4QiA\" width=\"640\" height=\"360\" frameborder=\"0\"\u003e\u003c\/iframe\u003e\u003cdiv\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eTECHNICAL DETAILS\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cul\u003e\n\u003cli\u003e56.4mm x 64.8mm \/ 2.2\" x 2.55\"\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eHeight (with sockets and RCA jacks): ~20mm \/ ~0.8\"\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eWeight: 18.8g\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"HiFiBerry","offers":[{"title":"Default Title","offer_id":45812690452769,"sku":"2901","price":2915.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/hifiberry-dac-hat-standard-rca-759.jpg?v=1689658926"},{"product_id":"text-to-speech-emic-2-module","title":"Adafruit Text-to-Speech Emic 2 Module - 924","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eGive Your Project a Voice — Emic 2 Text-to-Speech Module\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eEmic 2 Text-to-Speech Module\u003c\/strong\u003e converts ASCII text into natural-sounding speech in real time. Send it a string over serial UART and it speaks the words through an attached speaker — no internet connection needed. Built on the DECtalk engine (the same technology used by Stephen Hawking), it supports multiple voices, adjustable pitch, and speech rate control.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eEngine\u003c\/th\u003e\n\u003ctd\u003eDECtalk (Epson S1V30120)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eSerial UART (9600 baud default)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eVoices\u003c\/th\u003e\n\u003ctd\u003e9 (male, female, child, singing)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003eAnalog audio (speaker\/headphone)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003e5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eLanguages\u003c\/th\u003e\n\u003ctd\u003eEnglish (US), Castilian Spanish, Latin American Spanish\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eDoes it need an internet connection?\u003c\/strong\u003e No. All speech synthesis is done locally on the module.\u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eCan I change the voice?\u003c\/strong\u003e Yes — 9 built-in voices with adjustable pitch and speed.\u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45812691403041,"sku":"924","price":4789.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/text-to-speech-emic-2-module-767.jpg?v=1689658965"},{"product_id":"electret-microphone-amplifier-max4466-with-adjustable-gain-2","title":"Electret Microphone Amplifier MAX4466 with Adjustable Gain","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eElectret Microphone Module — MAX4466 Adjustable Gain\u003c\/h2\u003e\n \u003cp\u003eThis \u003cstrong\u003eMAX4466 Electret Microphone Amplifier Module\u003c\/strong\u003e features an electret condenser mic paired with a MAX4466 op-amp for clean analog audio output. The onboard trimmer lets you dial in the right gain for your application — from quiet environmental monitoring to louder sound-level detection.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eMAX4466\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eGain\u003c\/th\u003e\n\u003ctd\u003eAdjustable via trimmer (25x–125x)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003eAnalog\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003e2.4–5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Circuitrocks","offers":[{"title":"Default Title","offer_id":45812699889953,"sku":"AB024","price":85.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/electret-microphone-amplifier-max4466-with-adjustable-gain-784.jpg?v=1689659045"},{"product_id":"mini-metal-speaker-w-wires-8-ohm-0-5w","title":"Mini Metal Speaker w\/ Wires - 8 Ohm 0.5W Adafruit 1890","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eMini Metal Speaker — 8Ω 0.5W with Wires\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eMini Metal Speaker (8Ω, 0.5W)\u003c\/strong\u003e is a tiny 1\" diameter speaker with pre-soldered wires, ready to connect to any small amplifier or audio breakout. Perfect for notification sounds, voice playback, and tiny audio projects.\u003c\/p\u003e\n \u003ch3\u003eSpeaker comparison\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eSpeaker\u003c\/th\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003cth\u003eImpedance\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMini Metal (this)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1\" (25mm)\u003c\/td\u003e\n\u003ctd\u003e0.5W\u003c\/td\u003e\n\u003ctd\u003e8Ω\u003c\/td\u003e\n\u003ctd\u003eNotification tones, tiny projects\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=speaker+50mm\"\u003e50mm Speaker\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e2\" (50mm)\u003c\/td\u003e\n\u003ctd\u003e1W\u003c\/td\u003e\n\u003ctd\u003e8Ω\u003c\/td\u003e\n\u003ctd\u003eSmall portable projects\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=speaker+1.5+inch+4+ohm\"\u003e1.5\" Speaker\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e1.5\" (40mm)\u003c\/td\u003e\n\u003ctd\u003e3W\u003c\/td\u003e\n\u003ctd\u003e4Ω\u003c\/td\u003e\n\u003ctd\u003eLouder portable audio\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=speaker+20W\"\u003e20W Speaker\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e4\" (100mm)\u003c\/td\u003e\n\u003ctd\u003e20W\u003c\/td\u003e\n\u003ctd\u003e4Ω\u003c\/td\u003e\n\u003ctd\u003eMusic, loud audio\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e~25 mm (1\")\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003e0.5W\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eImpedance\u003c\/th\u003e\n\u003ctd\u003e8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWires\u003c\/th\u003e\n\u003ctd\u003ePre-attached\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45812700578081,"sku":"1890","price":164.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/mini-metal-speaker-w-wires-8-ohm-0-5w-1.jpg?v=1781006185"},{"product_id":"wired-miniature-electret-microphone","title":"Wired Miniature Electret Microphone - Adafruit 1935","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eWired Miniature Electret Microphone\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eWired Miniature Electret Microphone\u003c\/strong\u003e is a tiny electret condenser capsule with pre-attached wires — ready to solder into your project. At just a few millimeters across, it's one of the smallest ways to add voice\/sound input to an Arduino, Raspberry Pi, or embedded system.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eElectret condenser (omnidirectional)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWires\u003c\/th\u003e\n\u003ctd\u003ePre-attached\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSize\u003c\/th\u003e\n\u003ctd\u003e~6 mm diameter\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45812700840225,"sku":"1935","price":65.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/wired-miniature-electret-microphone-790.jpg?v=1689659078"},{"product_id":"dtmf-shield-for-arduino","title":"DFRobot DTMF Shield for Arduino - Phone Dialer\/Receiver","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eBuild Faster with the DTMF Shield For Arduino\u003c\/h2\u003e\n\n \u003cp\u003e\n This DTMF Shield is a Dual-tone multi-frequency signaling module decoder for Arduino With it's audio connector you can decode the crazy funny noises common phones make. If you are not sure what I'm talking about, imagine a home phone while pressing several of its keys. These Touch-Tones have a specific frequency or sound that this module can decode. This Shield is a Audio code system that will allow you to send commands to your Arduino via Audio signal.\n \u003c\/p\u003e\n\n \u003cp\u003e\n Together with GMS \/ GPRS \/ GPS shield this module can communicate your Arduino with any phone land line or Cell phone in the world, within GSM signal range. Which goes as far as your cellphone.\n \u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n \u003cstrong\u003eImportant:\u003c\/strong\u003e Use the official DFRobot links below for wiring, sample code, downloads, and the latest setup notes for this SKU.\n \u003c\/div\u003e\n\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003eAudio socket for application\u003c\/li\u003e\n \u003cli\u003e37x37x9mm（1.46x1.46x0.35\"）\u003c\/li\u003e\n \u003cli\u003eSpeaker connector for audio sound checking\u003c\/li\u003e\n \u003cli\u003elibrary and example\u003c\/li\u003e\n \u003cli\u003eForum discussion\u003c\/li\u003e\n \u003cli\u003eDTMF module x1\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003e\n This board is a good fit for learning, prototyping, robotics, and controller-based builds. Use it as the main brain for sensors, displays, wireless projects, and classroom or workshop demos.\n \u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003e\n A solid starter setup includes a \u003ca href=\"\/search?q=usb+cable\"\u003eUSB cable\u003c\/a\u003e, breadboard, jumper wires, and a few \u003ca href=\"\/search?q=gravity%20sensor\"\u003eDFRobot Gravity sensors\u003c\/a\u003e or an \u003ca href=\"\/search?q=lcd\"\u003eLCD module\u003c\/a\u003e for quick testing.\n \u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003e\n Useful add-ons include sensors, displays, shields, breadboards, headers, and enclosures if you are building a complete prototype or classroom kit.\n \u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eDTMF Shield For Arduino\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSKU\u003c\/th\u003e\n \u003ctd\u003eDFR0308\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eBrand\u003c\/th\u003e\n \u003ctd\u003eDFRobot\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eInterface\u003c\/th\u003e\n \u003ctd\u003eGSM, GPRS, GPS\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eNote\u003c\/th\u003e\n \u003ctd\u003eFor use with the GSM \/ GPS \/ GPRS shield, you will need an audio cable (FIT0113)\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eWorks with\u003c\/th\u003e\n \u003ctd\u003eArduino\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003e\n Follow the official DFRobot product page and wiki for the exact wiring order, sample code, and setup notes.\n \u003c\/p\u003e\n\n \u003ch3\u003eDFRobot resources\u003c\/h3\u003e\n \u003cp\u003e\n Official product page: \u003ca href=\"https:\/\/www.dfrobot.com\/search-DFR0308.html\" target=\"_blank\" rel=\"noopener\"\u003eView on DFRobot\u003c\/a\u003e\u003cbr\u003e\n Wiki \/ documentation: \u003ca href=\"https:\/\/www.dfrobot.com\/wiki\/index.php\/DTMF\" target=\"_blank\" rel=\"noopener\"\u003eOpen DFRobot wiki\u003c\/a\u003e\u003cbr\u003e\u003ca href=\"https:\/\/www.dfrobot.com\/forum\/index.php?topic=1590.msg5377\" target=\"_blank\" rel=\"noopener\"\u003eForum discussion\u003c\/a\u003e\n \u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e\n 1 × DTMF Shield For Arduino\n \u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs this a good choice for learning and prototyping?\u003c\/strong\u003e Yes. It is well suited for classroom work, hobby builds, quick tests, and project development with common modules and sensors.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it work with other boards too?\u003c\/strong\u003e Often yes, as long as voltage, interface, and pin mapping match. ESP32 and Raspberry Pi users should still check the official docs first.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhere can I find wiring and examples?\u003c\/strong\u003e Use the official DFRobot product page and wiki links below for guides, downloads, and code examples.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"DFRobot","offers":[{"title":"Default Title","offer_id":45812707557665,"sku":"DFR0308","price":645.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/dtmf-shield-for-arduino-hires.jpg?v=1778921359"},{"product_id":"breadboard-friendly-pcb-mount-mini-speaker-8-ohm-02w","title":"Breadboard-Friendly Mini PCB Speaker - 8 Ohm 0.2W","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003cp\u003eListen up! This 1.1\" (~30mm) diameter speaker is the perfect addition to any breadboard-based audio project where you need 8 Ohm impedance, and have 0.2W or less of power. The two pins are 15mm \/ 0.6\" apart and fit perfectly in a breadboard or perfboard. This speaker has a durable protective plastic casing that's still lightweight.\u003c\/p\u003e\n\n\u003cp\u003eWorks great with our \u003ca href=\"https:\/\/circuit.rocks\/wave-shield-adafruit-for-arduino-kit-v1-1.html\"\u003eWave shield\u003c\/a\u003e\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eTECHNICAL DETAILS\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\n\u003cli\u003eWeight: 8g\u003cbr\u003e\n\u003c\/li\u003e\n\n\u003cli\u003eDiameter: 29mm \/ 1.1\"\u003cbr\u003e\n\u003c\/li\u003e\n\n\u003cli\u003eHeight: 12mm \/ 0.5\"\u003cbr\u003e\n\u003c\/li\u003e\n\n\u003cli\u003eBetween Pins: 15mm \/ 0.6\"\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/cdn-shop.adafruit.com\/datasheets\/P1898.pdf\"\u003eDatasheet\u003c\/a\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45813698134305,"sku":"1898","price":119.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/breadboard-friendly-pcb-mount-mini-speaker-8-ohm-0-2w-927.jpg?v=1689672151"},{"product_id":"speaker-3-diameter-8-ohm-1-watt","title":"Speaker 50mm Diameter 8 Ohm 1W - Adafruit Round 1313","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003e50mm Speaker — 8Ω 1W\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003e50mm Diameter Speaker (8Ω, 1W)\u003c\/strong\u003e is a mid-sized speaker for projects that need more volume than a mini speaker but don't need high power. Works well with low-power amplifiers for voice prompts, alarms, and multimedia projects.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e50 mm (2\")\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003e1W\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eImpedance\u003c\/th\u003e\n\u003ctd\u003e8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45813705113889,"sku":"1313","price":35.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/speaker-50mm-diameter-8-ohm-1-watt-976.jpg?v=1689672345"},{"product_id":"speaker-3-diameter-4-ohm-3-watt","title":"Speaker 1.5\" Diameter 4 Ohm 3W - Adafruit 1314 Compact","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003e1.5\" Speaker — 4Ω 3W\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003e1.5\" Diameter Speaker (4Ω, 3W)\u003c\/strong\u003e pairs perfectly with small Class D amplifiers like the \u003ca href=\"\/search?q=PAM8403\"\u003ePAM8403\u003c\/a\u003e or \u003ca href=\"\/search?q=MAX98306\"\u003eMAX98306\u003c\/a\u003e. It's loud enough for a portable Bluetooth speaker build, desktop notification system, or interactive exhibit.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e1.5\" (~40mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003e3W\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eImpedance\u003c\/th\u003e\n\u003ctd\u003e4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45813769273633,"sku":"1314","price":58.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/speaker-1-5-diameter-4-ohm-3-watt-1078.jpg?v=1689672780"},{"product_id":"electret-microphone-20hz-20khz-omnidirectional","title":"Electret Microphone 20Hz-20kHz Omnidirectional - 3pcs Pack","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eElectret Microphone Capsule — Omnidirectional, 20Hz–20KHz (3PCS)\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eElectret Microphone 20Hz–20KHz Omnidirectional (3PCS)\u003c\/strong\u003e are small, inexpensive mic capsules that pick up sound from all directions. They're the same type of microphone found in phones and headsets — great for voice input, sound detection, clap switches, and ambient noise monitoring with an \u003ca href=\"\/search?q=arduino\"\u003eArduino\u003c\/a\u003e or \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e.\u003c\/p\u003e\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eNote:\u003c\/strong\u003e These are raw capsules. You'll need a bias resistor and coupling capacitor, or pair them with an \u003ca href=\"\/search?q=MAX4466\"\u003eamplifier breakout like the MAX4466\u003c\/a\u003e for a ready-to-use analog signal.\u003c\/div\u003e\n \u003ch3\u003eMicrophone comparison\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eAmplified?\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectret capsule (this)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eElectret condenser\u003c\/td\u003e\n\u003ctd\u003eNo (raw capsule)\u003c\/td\u003e\n\u003ctd\u003eDIY builds, custom circuits\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=MAX4466\"\u003eMAX4466 breakout\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eElectret + amp\u003c\/td\u003e\n\u003ctd\u003eYes (adjustable gain)\u003c\/td\u003e\n\u003ctd\u003eGeneral purpose, sound level\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=MAX9814\"\u003eMAX9814 breakout\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eElectret + AGC amp\u003c\/td\u003e\n\u003ctd\u003eYes (auto gain)\u003c\/td\u003e\n\u003ctd\u003eVoice recording, varying volumes\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=INMP401\"\u003eINMP401 MEMS\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eMEMS\u003c\/td\u003e\n\u003ctd\u003eYes (built-in)\u003c\/td\u003e\n\u003ctd\u003eCompact, digital-ready\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=SPW2430\"\u003eSPW2430 MEMS\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eMEMS\u003c\/td\u003e\n\u003ctd\u003eYes (built-in)\u003c\/td\u003e\n\u003ctd\u003eTiny, surface mount\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eElectret condenser (omnidirectional)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eFrequency Range\u003c\/th\u003e\n\u003ctd\u003e20 Hz – 20 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003e3 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45813776875809,"sku":"AK070","price":45.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/electret-microphone-20hz-20khz-omnidirectional-white.jpg?v=1778911663"},{"product_id":"buzzer-5v-breadboard-friendly","title":"Passive Buzzer Module for Arduino\/AVR\/PIC - Tone Output","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003cp\u003eThis passive buzzer is one loud noisemaker. Unlike active buzzers and plain piezos, this buzzer does not need an oscillating signal to create sound. That is why it will automatically screech a 2KHz beep when applied to a 3-5V input voltage. \u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eInput voltage: 3-5V\u003c\/li\u003e\n\u003cli\u003eSize: 26 x 15 x 10mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eLibrary: \u003c\/span\u003eNone\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eInclusions: \u003c\/span\u003e1 x Passive Buzzer Module for Arduino AVR PIC\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eDocuments: \u003c\/span\u003eNone\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45813780414753,"sku":"AB279","price":35.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/buzzer-5v-breadboard-friendly-white.jpg?v=1778911950"},{"product_id":"stereo-20w-class-d-audio-amplifier-max9744","title":"MAX9744 Stereo Class-D Audio Amplifier 20W - Adafruit 1752","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003ePremium Stereo 20W Class D Amplifier — MAX9744\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eAdafruit Stereo 20W Class D Audio Amplifier (MAX9744)\u003c\/strong\u003e is a high-quality stereo amplifier that outputs \u003cstrong\u003e2×20W\u003c\/strong\u003e with exceptionally low noise and distortion. Volume control via I2C makes it easy to integrate with microcontrollers. It's Adafruit's top pick for powered speaker builds that need clean, loud audio.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eMAX9744 (Maxim)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Power\u003c\/th\u003e\n\u003ctd\u003e2×20W (4Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003ctd\u003e2 (stereo)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eVolume Control\u003c\/th\u003e\n\u003ctd\u003eI2C digital + analog potentiometer\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e4.5–14V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eClass\u003c\/th\u003e\n\u003ctd\u003eClass D\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45813847490849,"sku":"1752","price":1215.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/stereo-20w-class-d-audio-amplifier-max9744-1113.jpg?v=1689672925"},{"product_id":"speaker-20w-4-ohm-full-range-xs-gtf1027","title":"Full-Range Speaker 20W 4 Ohm - XS GTF1027 102mm Driver","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eFull-Range 20W Speaker — 4\" 4Ω\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003e20W 4Ω Full Range Speaker (XS GTF1027)\u003c\/strong\u003e is a 4-inch driver that handles both music and voice with authority. Pair it with a \u003ca href=\"\/search?q=MAX9744\"\u003eMAX9744 (20W)\u003c\/a\u003e or \u003ca href=\"\/search?q=TPA3116D2\"\u003eTPA3116D2\u003c\/a\u003e amplifier for a high-quality DIY powered speaker or boombox build.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e4\" (~100mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003e20W\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eImpedance\u003c\/th\u003e\n\u003ctd\u003e4Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eFull range\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45813848277281,"sku":"1732","price":599.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/speaker-20w-4-ohm-full-range-xs-gtf1027-1114.jpg?v=1689672930"},{"product_id":"audio-fx-sound-board-wav-ogg-trigger-with-16mb-flash-adafruit","title":"Adafruit Audio FX Sound Board 16MB - WAV\/OGG Trigger","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003e16MB Sound Effects Trigger Board — Adafruit Audio FX (Line Out)\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eAdafruit Audio FX Sound Board – WAV\/OGG Trigger 16MB\u003c\/strong\u003e is the line-output version of Adafruit's Audio FX family. It plays WAV and OGG files from 16 MB of onboard flash, triggered by GPIO pins. Use an \u003ca href=\"\/search?q=amplifier+audio\"\u003eexternal amplifier\u003c\/a\u003e for speaker output, or connect directly to headphones or powered speakers.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eFlash Storage\u003c\/th\u003e\n\u003ctd\u003e16 MB\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eAudio Formats\u003c\/th\u003e\n\u003ctd\u003eWAV, OGG Vorbis\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eBuilt-in Amp\u003c\/th\u003e\n\u003ctd\u003eNo (line-level output)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eTrigger Pins\u003c\/th\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003e3.3–5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45813855486241,"sku":"2220","price":1699.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/audio-fx-sound-board-wav-ogg-trigger-with-16mb-flash-adafruit-circuitrocks.jpg?v=1780999213"},{"product_id":"stereo-3-7w-class-d-audio-amplifier-max98306","title":"Adafruit MAX98306 Stereo Class-D Audio Amp 3.7W - 987","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eStereo 3.7W Class D Amplifier Breakout — MAX98306\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eAdafruit Stereo 3.7W Class D Audio Amplifier (MAX98306)\u003c\/strong\u003e outputs \u003cstrong\u003e2×3.7W\u003c\/strong\u003e — a bit more power than the PAM8403 — with selectable gain and a clean Adafruit breakout layout. Great for portable stereo speakers and maker audio projects that need a bit more punch.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eMAX98306 (Maxim)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Power\u003c\/th\u003e\n\u003ctd\u003e2×3.7W (4Ω)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003ctd\u003e2 (stereo)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eGain\u003c\/th\u003e\n\u003ctd\u003eSelectable: 6\/9\/12\/15 dB\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e2.7–5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45813864530209,"sku":"987","price":585.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/stereo-3-7w-class-d-audio-amplifier-max98306-1.jpg?v=1781007192"},{"product_id":"i2s-3w-class-d-amplifier-breakout-max98357a-adafruit","title":"Adafruit MAX98357A I2S 3W Class-D Amplifier Breakout - 3006","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDigital I2S Amplifier Breakout — MAX98357A 3W Class D\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eAdafruit I2S 3W Class D Amplifier Breakout (MAX98357A)\u003c\/strong\u003e accepts \u003cstrong\u003edigital I2S audio\u003c\/strong\u003e directly — no DAC needed. 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This makes it ideal for modern digital audio projects where you want to skip the analog stage entirely.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eMAX98357A (Maxim)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInput\u003c\/th\u003e\n\u003ctd\u003eI2S digital audio\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Power\u003c\/th\u003e\n\u003ctd\u003e3.2W (4Ω, 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003ctd\u003e1 (mono, selectable L\/R\/mix)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e2.5–5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eClass\u003c\/th\u003e\n\u003ctd\u003eClass D\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45813875867937,"sku":"3006","price":499.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/i2s-3w-class-d-amplifier-breakout-max98357a-adafruit-1.jpg?v=1781007273"},{"product_id":"buzzer-3v-5v-passive-5pcs","title":"Active Buzzer 3V\/5V - 5pcs Through-Hole Audible Alert","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eActive Buzzer 3V\/5V — 5-Piece Pack\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eActive Buzzer 3V\/5V (5PCS)\u003c\/strong\u003e is the simplest way to add sound to your project. An active buzzer contains a built-in oscillator, so you just apply DC voltage and it beeps — no frequency generation needed from your microcontroller. Ideal for alarms, button feedback, timer alerts, and notification sounds.\u003c\/p\u003e\n \u003ch3\u003eActive vs passive buzzers\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003eHow it works\u003c\/th\u003e\n\u003cth\u003ePros\u003c\/th\u003e\n\u003cth\u003eCons\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eActive (this)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eBuilt-in oscillator — apply voltage and it beeps\u003c\/td\u003e\n\u003ctd\u003eSimple, one fixed tone\u003c\/td\u003e\n\u003ctd\u003eCan't change frequency\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=piezo+buzzer\"\u003ePassive \/ Piezo\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eNeeds external frequency signal (PWM)\u003c\/td\u003e\n\u003ctd\u003ePlay melodies, variable tones\u003c\/td\u003e\n\u003ctd\u003eRequires PWM from MCU\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eActive (built-in oscillator)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e3–5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003e5 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45813921874209,"sku":"2394","price":75.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/buzzer-3v-5v-active-5pcs-1192.jpg?v=1689673223"},{"product_id":"audio-amplifier-stereo-21w-class-d-tpa2012","title":"TPA2012 Stereo Audio Amplifier 2.1W Class-D - Adafruit 1552","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eCompact Stereo 2.1W Class D Amplifier — TPA2012\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eTPA2012 Stereo 2.1W Class D Audio Amplifier\u003c\/strong\u003e is a tiny, efficient breakout from Adafruit that outputs \u003cstrong\u003e2×2.1W\u003c\/strong\u003e into 4Ω speakers. It runs on 2.5–5.5V, making it perfect for battery-powered projects, wearables, and embedded audio systems where space and power consumption are at a premium.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eTPA2012D2 (Texas Instruments)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Power\u003c\/th\u003e\n\u003ctd\u003e2×2.1W (4Ω, 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003ctd\u003e2 (stereo)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e2.5–5.5V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eClass\u003c\/th\u003e\n\u003ctd\u003eClass D\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eGain\u003c\/th\u003e\n\u003ctd\u003eSelectable via solder jumpers (6\/12\/18\/24 dB)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45813932917025,"sku":"1552","price":667.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/audio-amplifier-stereo-21w-class-d-tpa2012-1.jpg?v=1781007531"},{"product_id":"mems-silicon-microphone-breakout-spw2430-adafruit","title":"Adafruit MEMS Silicon Microphone Breakout SPW2430 - 2716","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Sound and Vibration for Smarter Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eMEMS Silicon Microphone Breakout SPW2430 Adafruit\u003c\/strong\u003e is a ph sensor with analog output designed for sound detection, vibration alerts, and machine monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eFrequency Range:\u003c\/strong\u003e 100 Hz – 10 kHz; \u003cstrong\u003eSupply Voltage:\u003c\/strong\u003e 1.5–3.6V; \u003cstrong\u003eOutput:\u003c\/strong\u003e Analog (peak-to-peak, DC biased).\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Water-quality sensors usually need calibration solutions and regular probe care. Probe condition and temperature can affect the reading.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eMain chip:\u003c\/strong\u003e SPW2430 MEMS microphone\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eController output:\u003c\/strong\u003e Analog (peak-to-peak, DC biased)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSensing range:\u003c\/strong\u003e 100 Hz – 10 kHz\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003ePower range:\u003c\/strong\u003e 1.5–3.6V\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e MEMS (bottom-port, omnidirectional)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMEMS Silicon Microphone Breakout SPW2430 Adafruit\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/mems-microphone-sound-sensor\"\u003eMEMS Microphone Breakout INMP401 ADMP401 SparkFun\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, breakout-board format\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/electret-microphone-amplifier-max9814-with-auto-gain-control\"\u003eElectret Microphone Amplifier - MAX9814 with Auto Gain Control\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/usb-microphone-for-raspberry-pi-2\"\u003eUSB Microphone for Raspberry Pi\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for clap switches, knock locks, vibration alarms, sound level demos, and machine monitoring.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard and jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include an Arduino or ADC-capable board, jumper wires, and a stable power source, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eMEMS Silicon Microphone Breakout SPW2430 Adafruit\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eSPW2430 MEMS microphone\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput\u003c\/th\u003e\n\u003ctd\u003eAnalog (peak-to-peak, DC biased)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eFrequency Range\u003c\/th\u003e\n\u003ctd\u003e100 Hz – 10 kHz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e1.5–3.6V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eMEMS (bottom-port, omnidirectional)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003eacoustic sound vibration sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect power and ground, then read the sensor output with an \u003cstrong\u003eanalog-capable input\u003c\/strong\u003e or external ADC. Stable power and a clean ground help reduce noise. Water-quality sensors usually need calibration solutions and regular probe care. Probe condition and temperature can affect the reading.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × MEMS Silicon Microphone Breakout SPW2430 Adafruit\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the MEMS Silicon Microphone Breakout SPW2430 Adafruit measure?\u003c\/strong\u003e\n It is designed to measure sound level, audio activity, or optical fingerprint data.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eHow do I connect this Analog sensor?\u003c\/strong\u003e\n This sensor gives an analog-style signal, so you read it with an ADC or an analog-capable input.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45813959721249,"sku":"2716","price":355.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/mems-silicon-microphone-breakout-spw2430-adafruit-1238.jpg?v=1689673438"},{"product_id":"adc-ads1015-12-bit-4-channel-with-programmable-gain-amplifier","title":"ADS1015 12-Bit 4-Channel ADC w\/ PGA - I2C Breakout","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003cp\u003eDon't fret! There's always an ADC to solve your analog signal problem. The ADC ADS1015 12-Bit 4 Channel with Programmable Gain Amplifier is a high-precision Analog to Digital Signal Converter that can convert any analog data to binary with up to 12-bit precision at 3300 samples per second over I2C. What's amazing with this component is that it has a programmable gain amplifier and it can run from 2V to 5V power and logic. Talk about awesome!\u003c\/p\u003e\n\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eInput Voltage: 2.0V to 5.5V\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eLow Current Consumption\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eProgrammable Data Rate: 128SPS to 3.3kSPS\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInternal Low-Drift Voltage Reference\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eInternal Oscillator and PGA\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eI2C interface\u003c\/li\u003e\n\u003cli\u003eFour Single-Ended or Two Differential Inputs\u003c\/li\u003e\n\u003cli\u003eProgrammable Comparator\u003c\/li\u003e\n\u003cli\u003eThis board\/chip uses I2C 7-bit addresses between 0x48-0x4B, selectable with jumpers\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eLibrary:\u003c\/span\u003e None\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eInclusions: \u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eADC ADS1015 12-Bit 4 Channel with Programmable Gain Amplifier\u003c\/li\u003e\n\u003cli\u003eHeader pins\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eDocuments:\u003c\/span\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/adafruit\/ADS1X15-Breakout-Board-PCBs\" target=\"_blank\"\u003eSchematics\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/adafruit\/Fritzing-Library\" target=\"_blank\"\u003eFritzing\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/adafruit.com\/datasheets\/ads1015.pdf\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45813970895137,"sku":"AB155","price":257.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/adc-ads1015-12-bit-4-channel-with-programmable-gain-amplifier-white.jpg?v=1778911231"},{"product_id":"amplifier-tda3116d2-dual-channel-12-24v","title":"Amplifier TDA3116D2 Dual-Channel 12-24V","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eStereo Hi-Fi Amplifier Board — TDA3116D2 Dual Channel 12–24V\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eTDA3116D2 Dual Channel Amplifier\u003c\/strong\u003e is a versatile stereo Class D board powered by the popular TPA3116D2 chip. Running on 12–24V DC, it outputs up to \u003cstrong\u003e2×50W\u003c\/strong\u003e with excellent efficiency and low distortion — making it a top choice for DIY bookshelf speakers, desktop audio, car audio, and home theater projects.\u003c\/p\u003e\n \u003ch3\u003eWhy choose it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e2×50W stereo:\u003c\/strong\u003e Plenty of power for medium to large speakers\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003e12–24V supply:\u003c\/strong\u003e Works with laptop chargers, car batteries, or bench supplies\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLow distortion:\u003c\/strong\u003e Clean audio across the frequency range\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh efficiency:\u003c\/strong\u003e ~90% — barely gets warm\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eTPA3116D2 (Texas Instruments)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Power\u003c\/th\u003e\n\u003ctd\u003e2×50W (4Ω, 24V) \/ 2×30W (8Ω, 24V)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003ctd\u003e2 (stereo)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eClass\u003c\/th\u003e\n\u003ctd\u003eClass D\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e12–24V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eEfficiency\u003c\/th\u003e\n\u003ctd\u003e~90%\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSpeaker Impedance\u003c\/th\u003e\n\u003ctd\u003e4Ω–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45814146924833,"sku":"AM338","price":379.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/amplifier-tda3116d2-dual-channel-12-24v-hires.jpg?v=1778921270"},{"product_id":"amplifier-mono-digital-module-oep30w-single-channel","title":"Mono Class-D Amplifier OEP30W - Single Channel","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eCompact 30W Mono Speaker Amplifier — OEP30W\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eOEP30W Mono Digital Amplifier Module\u003c\/strong\u003e delivers \u003cstrong\u003e30 watts\u003c\/strong\u003e of clean audio power to a single speaker channel. Its small footprint and simple wiring make it ideal for powered speaker builds, intercom systems, public address setups, and any project that needs more volume than a tiny Class D breakout can provide.\u003c\/p\u003e\n \u003ch3\u003eWhy choose it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e30W output:\u003c\/strong\u003e Enough for a room-filling single speaker\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eDigital Class D:\u003c\/strong\u003e High efficiency, low heat, small board\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSimple hookup:\u003c\/strong\u003e Power, audio in, speaker out — that's it\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003eMono amplifier comparison\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=OEP20W\"\u003eOEP20W\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e20W\u003c\/td\u003e\n\u003ctd\u003eMono\u003c\/td\u003e\n\u003ctd\u003eMedium speaker, lower budget\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOEP30W (this)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30W\u003c\/td\u003e\n\u003ctd\u003eMono\u003c\/td\u003e\n\u003ctd\u003eLouder single-speaker builds\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=OEP30WX2\"\u003eOEP30WX2\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e2×30W\u003c\/td\u003e\n\u003ctd\u003eDual\/Stereo\u003c\/td\u003e\n\u003ctd\u003eStereo pair or bi-amp\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=TPA3118+60W\"\u003eTPA3118 60W\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e60W\u003c\/td\u003e\n\u003ctd\u003eMono BTL\u003c\/td\u003e\n\u003ctd\u003eHigh-power single driver\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eOEP30W\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Power\u003c\/th\u003e\n\u003ctd\u003e30W (mono)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003ctd\u003e1 (mono)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eClass\u003c\/th\u003e\n\u003ctd\u003eClass D (digital)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSpeaker Impedance\u003c\/th\u003e\n\u003ctd\u003e4Ω–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eCan I use two for stereo?\u003c\/strong\u003e Yes, or consider the \u003ca href=\"\/search?q=OEP30WX2\"\u003eOEP30WX2 dual-channel module\u003c\/a\u003e which has both channels on one board.\u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45814165045537,"sku":"AM332","price":159.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/amplifier-mono-digital-module-oep30w-single-channel-hires.jpg?v=1778921267"},{"product_id":"amplifier-mono-digital-module-oep30wx2-dual-channel","title":"Class-D Stereo Amplifier OEP30Wx2 - Dual-Channel","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDual-Channel 30W Amplifier — OEP30WX2\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eOEP30WX2 Dual Channel Digital Amplifier Module\u003c\/strong\u003e delivers \u003cstrong\u003e2×30W\u003c\/strong\u003e of stereo power from a single compact board. Drive a pair of bookshelf speakers, build a stereo boombox, or bi-amp a two-way speaker — all from one module.\u003c\/p\u003e\n \u003ch3\u003eWhy choose it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e2×30W stereo:\u003c\/strong\u003e Left + right channels on one board\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eEfficient Class D:\u003c\/strong\u003e Minimal heat, no bulky heatsink needed\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCompact:\u003c\/strong\u003e Single PCB replaces two separate mono amps\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eOEP30WX2\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Power\u003c\/th\u003e\n\u003ctd\u003e2×30W (stereo)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003ctd\u003e2 (stereo)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eClass\u003c\/th\u003e\n\u003ctd\u003eClass D (digital)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSpeaker Impedance\u003c\/th\u003e\n\u003ctd\u003e4Ω–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45814167240993,"sku":"AM331","price":205.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/amplifier-mono-digital-module-oep30wx2-dual-channel-hires.jpg?v=1778921267"},{"product_id":"amplifier-mono-digital-oep20w-module","title":"Mono Class-D Amplifier OEP20W - Lower-Power Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eBudget 20W Mono Amplifier Module — OEP20W\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eOEP20W Mono Digital Amplifier Module\u003c\/strong\u003e is a compact, low-cost Class D amplifier that outputs up to \u003cstrong\u003e20W\u003c\/strong\u003e into a single speaker. Perfect for alarm systems, announcement speakers, DIY radios, and any project where you need decent volume without breaking the bank.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eOEP20W\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOutput Power\u003c\/th\u003e\n\u003ctd\u003e20W (mono)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003ctd\u003e1 (mono)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eClass\u003c\/th\u003e\n\u003ctd\u003eClass D\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSpeaker Impedance\u003c\/th\u003e\n\u003ctd\u003e4Ω–8Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45814170059041,"sku":"AM330","price":119.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/amplifier-mono-digital-oep20w-module-white.jpg?v=1778911902"},{"product_id":"amplifier-signal-microvolt-millivolt-voltage-module-ad620","title":"AD620 Microvolt\/Millivolt Signal Amplifier Module","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003ePrecision Instrumentation Amplifier — AD620 Module\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eAD620 Signal Amplifier Module\u003c\/strong\u003e is a low-noise \u003cstrong\u003einstrumentation amplifier\u003c\/strong\u003e designed to amplify tiny microvolt and millivolt signals — the kind produced by strain gauges, thermocouples, load cells, biomedical sensors (ECG\/EMG), and other precision measurement devices. Unlike audio amplifiers, this module is built for \u003cstrong\u003eDC and low-frequency signal conditioning\u003c\/strong\u003e.\u003c\/p\u003e\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eThis is not an audio amplifier.\u003c\/strong\u003e The AD620 is a precision instrumentation amplifier for sensor signal conditioning. Looking for audio? See our \u003ca href=\"\/search?q=amplifier+audio\"\u003eaudio amplifier modules\u003c\/a\u003e.\u003c\/div\u003e\n \u003ch3\u003eWhy choose it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh gain accuracy:\u003c\/strong\u003e Gain set by a single external resistor\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLow noise:\u003c\/strong\u003e 9 nV\/√Hz — ideal for microvolt-level signals\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eHigh CMRR:\u003c\/strong\u003e Excellent common-mode rejection for noisy environments\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLow power:\u003c\/strong\u003e Only 1.3 mA max supply current\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eAD620 (Analog Devices)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eInstrumentation amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInput Noise\u003c\/th\u003e\n\u003ctd\u003e9 nV\/√Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCMRR\u003c\/th\u003e\n\u003ctd\u003e100 dB minimum\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eGain Range\u003c\/th\u003e\n\u003ctd\u003e1 to 10,000 (set by single resistor)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply\u003c\/th\u003e\n\u003ctd\u003e±2.3V to ±18V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eCan I use this for audio?\u003c\/strong\u003e It's not designed for audio. For speaker amplification, see \u003ca href=\"\/search?q=PAM8403\"\u003ePAM8403\u003c\/a\u003e or \u003ca href=\"\/search?q=TPA3116D2\"\u003eTPA3116D2\u003c\/a\u003e modules.\u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eWhat sensors work with this?\u003c\/strong\u003e Load cells, strain gauges, thermocouples, Wheatstone bridges, ECG electrodes, and any sensor outputting microvolt\/millivolt signals.\u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45814175072545,"sku":"AM353","price":267.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/amplifier-signal-microvolt-millivolt-voltage-module-ad620-hires.jpg?v=1778921268"},{"product_id":"piezoelectric-disk-buzzer-transducers","title":"Piezo Disk Buzzer Transducers 35mm - 10pcs Bare Elements","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003ePiezoelectric Disk Transducers 35mm — 10-Piece Pack\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003ePiezoelectric Disk Buzzer Transducers 35mm (10PCS)\u003c\/strong\u003e are larger bare piezo elements that produce louder sound and greater vibration sensitivity than their 15mm counterparts. Use them for DIY drum triggers, contact pickups for acoustic instruments, knock sensors, and vibration detection.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eBare piezo disc (passive)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eDiameter\u003c\/th\u003e\n\u003ctd\u003e35 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003e10 pieces\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45814186377505,"sku":"2382","price":170.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/piezoelectric-disk-buzzer-transducers-white.jpg?v=1778911981"},{"product_id":"usb-mini-microphone","title":"USB Mini Microphone - Plug-and-Play Computer Microphone","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eDetect Sound and Vibration for Smarter Projects\u003c\/h2\u003e\n\n \u003cp\u003eThe \u003cstrong\u003eUSB Mini Microphone\u003c\/strong\u003e is a ph sensor designed for sound detection, vibration alerts, and machine monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.\u003c\/p\u003e\n\n \u003cp\u003eKey details include \u003cstrong\u003eInterface:\u003c\/strong\u003e USB (plug-and-play, class compliant).\u003c\/p\u003e\n\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e Water-quality sensors usually need calibration solutions and regular probe care. Probe condition and temperature can affect the reading.\u003c\/div\u003e\n\n \u003ch3\u003eWhy you’ll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eEasy wiring:\u003c\/strong\u003e USB (plug-and-play, class compliant)\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eUseful spec:\u003c\/strong\u003e Omnidirectional condenser\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eMaker-friendly build:\u003c\/strong\u003e Easy to use in prototypes, classroom projects, and custom electronics\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCommon controller support:\u003c\/strong\u003e Works well with Arduino, ESP32, Raspberry Pi, and similar boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eProject-ready sensing:\u003c\/strong\u003e sound detection, knock sensing, vibration alerts, and machine monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n\n \u003ch3\u003eCompare with similar products\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003eSensor style\u003c\/th\u003e\n\u003cth\u003eStandout\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eUSB Mini Microphone\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor\u003c\/td\u003e\n\u003ctd\u003eCurrent item\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/usb-microphone-for-raspberry-pi-2\"\u003eUSB Microphone for Raspberry Pi\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor\u003c\/td\u003e\n\u003ctd\u003egeneral-purpose sensing\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/electret-microphone-amplifier-max9814-with-auto-gain-control\"\u003eElectret Microphone Amplifier - MAX9814 with Auto Gain Control\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/products\/mems-silicon-microphone-breakout-spw2430-adafruit\"\u003eMEMS Silicon Microphone Breakout SPW2430 Adafruit\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003epH sensor with analog output\u003c\/td\u003e\n\u003ctd\u003eanalog output, breakout-board format\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eThis sensor is a good fit for clap switches, knock locks, vibration alarms, sound level demos, and machine monitoring.\u003c\/p\u003e\n\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with an \u003ca href=\"\/search?q=arduino\"\u003eArduino-compatible board\u003c\/a\u003e, \u003ca href=\"\/search?q=esp32\"\u003eESP32\u003c\/a\u003e, or \u003ca href=\"\/search?q=raspberry+pi\"\u003eRaspberry Pi\u003c\/a\u003e, plus a breadboard or jumper wires for quick setup and testing.\u003c\/p\u003e\n\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include breadboards, jumper wires, displays, enclosures, and logging modules, depending on how you plan to power, mount, and log the sensor.\u003c\/p\u003e\n\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003ctd\u003eUSB Mini Microphone\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface\u003c\/th\u003e\n\u003ctd\u003eUSB (plug-and-play, class compliant)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003ctd\u003eOmnidirectional condenser\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCompatibility\u003c\/th\u003e\n\u003ctd\u003eRaspberry Pi, Windows, macOS, Linux\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eCategory\u003c\/th\u003e\n\u003ctd\u003eacoustic sound vibration sensors\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n\n \u003ch3\u003eWiring \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eCheck the pin labels on the \u003cstrong\u003eUSB Mini Microphone\u003c\/strong\u003e and match them to your controller voltage, ground, and signal pins. Keep wiring short and verify the logic level before powering the module. Water-quality sensors usually need calibration solutions and regular probe care. Probe condition and temperature can affect the reading.\u003c\/p\u003e\n\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × USB Mini Microphone\u003c\/p\u003e\n\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does the USB Mini Microphone measure?\u003c\/strong\u003e\n It is designed to measure sound level, audio activity, or optical fingerprint data.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I use it with Arduino, ESP32, or Raspberry Pi?\u003c\/strong\u003e\n Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eDoes it need calibration?\u003c\/strong\u003e\n Yes. Chemical and gas sensors usually need warm-up time, calibration, and periodic checking if you want stable readings.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eIs it good for prototyping?\u003c\/strong\u003e\n Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"Adafruit","offers":[{"title":"Default Title","offer_id":45814330851617,"sku":"3367","price":175.0,"currency_code":"PHP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/usb-mini-microphone-1441.jpg?v=1689674244"},{"product_id":"amplifier-high-fidelity-stereo-headphone-tpa6120","title":"TPA6120 HiFi Stereo Headphone Amplifier","description":"\u003cdiv class=\"product-copy\"\u003e\n \u003cstyle\u003e\n .product-copy{line-height:1.7;color:#1f2937}\n .product-copy \u003e * + *{margin-top:1rem}\n .product-copy h2{margin:1.4em 0 .6em;color:#111827}\n .product-copy h3{margin:1.1em 0 .5em;color:#111827}\n .product-copy p{margin:0 0 1em}\n .product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n .product-copy li{margin:.35em 0}\n .product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.7em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb;width:32%}\n .faq-list{margin:1.2rem 0 1.4rem}\n .faq{border:1px solid #e5e7eb;border-radius:12px;padding:.85rem 1rem;margin:.6rem 0;background:#fafafa}\n .note{background:#f8fafc;border-left:4px solid #2563eb;padding:.85rem 1rem;border-radius:8px}\n \u003c\/style\u003e\n\n \u003ch2\u003eHigh-Fidelity Stereo Headphone Amplifier — TPA6120\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eTPA6120 High Fidelity Stereo Headphone Amplifier\u003c\/strong\u003e is a dedicated headphone driver module built around the Texas Instruments TPA6120A2 chip — a current-feedback amplifier designed specifically for driving headphones with minimal distortion and ultra-low noise. If you want studio-quality headphone audio from your DIY music player, DAC, or audio project, this is the amplifier to use.\u003c\/p\u003e\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eUltra-low THD+N:\u003c\/strong\u003e Less than 0.001% distortion at typical listening levels\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eCurrent-feedback architecture:\u003c\/strong\u003e Drives headphones from 16Ω to 600Ω cleanly\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eWide bandwidth:\u003c\/strong\u003e Flat frequency response well beyond the audible range\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eStereo output:\u003c\/strong\u003e Two independent channels for left and right\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003eAmplifier comparison\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eModule\u003c\/th\u003e\n\u003cth\u003eType\u003c\/th\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003cth\u003eBest for\u003c\/th\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTPA6120 (this)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHeadphone amp\u003c\/td\u003e\n\u003ctd\u003e~80 mW into 32Ω\u003c\/td\u003e\n\u003ctd\u003eHi-fi headphone listening\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=PAM8403\"\u003ePAM8403\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eClass D stereo\u003c\/td\u003e\n\u003ctd\u003e2×3W\u003c\/td\u003e\n\u003ctd\u003eSmall battery speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=TPA2012\"\u003eTPA2012\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eClass D stereo\u003c\/td\u003e\n\u003ctd\u003e2×2.1W\u003c\/td\u003e\n\u003ctd\u003eCompact powered speakers\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=MAX9744\"\u003eMAX9744\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eClass D stereo\u003c\/td\u003e\n\u003ctd\u003e2×20W\u003c\/td\u003e\n\u003ctd\u003eRoom-filling sound\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/search?q=TPA3116D2\"\u003eTPA3116D2\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eClass D stereo\u003c\/td\u003e\n\u003ctd\u003e2×50W \/ 1×120W\u003c\/td\u003e\n\u003ctd\u003ePowerful speaker systems\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eChip\u003c\/th\u003e\n\u003ctd\u003eTPA6120A2 (Texas Instruments)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eTopology\u003c\/th\u003e\n\u003ctd\u003eCurrent-feedback headphone amplifier\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eChannels\u003c\/th\u003e\n\u003ctd\u003e2 (stereo)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eTHD+N\u003c\/th\u003e\n\u003ctd\u003e\u0026lt;0.001%\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eHeadphone Impedance\u003c\/th\u003e\n\u003ctd\u003e16Ω–600Ω\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eSupply Voltage\u003c\/th\u003e\n\u003ctd\u003e±5V to ±15V\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eCan this drive speakers?\u003c\/strong\u003e No. The TPA6120 is designed for headphones only. For speakers, see the \u003ca href=\"\/search?q=amplifier+speaker\"\u003espeaker amplifier modules\u003c\/a\u003e.\u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eWhat headphones work best?\u003c\/strong\u003e Any headphones from 16Ω to 600Ω. Higher-impedance audiophile cans benefit most from a dedicated headphone amp.\u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45814422208801,"sku":"AM340","price":279.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/amplifier-high-fidelity-stereo-headphone-tpa6120-1468.jpg?v=1689674363"},{"product_id":"dtmf-mt8870-audio-decoder-module","title":"DTMF MT8870 Audio Decoder Module - DTMF Tone Decoder","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003cp\u003eDTMF (Dual Tone Multi-Frequency) is a telecommunications signaling method that uses a combination of two sinusoidal frequencies to generate a dial tone. \u003c\/p\u003e\n\u003cp\u003eThe MT8870 module is a DTMF receiver that decodes the key pressed on a telephone keypad using a band-split filter. A band-split filter, as the name implies, splits the consolidated frequencies to identify them. The MT8870 module then converts the DTMF signal into 4-bit digital representing all 16 possible combinations on a standard telephone keypad. \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eSpecifications:\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eOperating Voltage: 5V\u003c\/li\u003e\n\u003cli\u003eInterface type: Digital\u003c\/li\u003e\n\u003cli\u003eOn-board MT8870 frequency decoder chip\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOn-board audio input interface\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eOn-board LED lights for output state indication\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003ePCB Size: 26.5 x 24.5 mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"MsoNoSpacing\" style=\"display: inline !important;\"\u003e\u003cspan style=\"font-weight: bold;\"\u003eLibrary\u003c\/span\u003e: None\u003c\/p\u003e\n\u003cp class=\"MsoNoSpacing\" style=\"display: inline !important;\"\u003e\u003cbr\u003e\u003cspan style=\"font-weight: bold;\"\u003eInclusions\u003c\/span\u003e: \u003cbr\u003e\u003c\/p\u003e\n\u003cul\u003e\u003cli\u003eDTMF decoder module x1\u003c\/li\u003e\u003c\/ul\u003e\n\u003cspan style=\"font-weight: bold;\"\u003eDocuments\u003c\/span\u003e: \n\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.openimpulse.com\/blog\/wp-content\/uploads\/wpsc\/downloadables\/MT8870-DTMF-Audio-Decoder-Module-Datasheet.pdf\" target=\"_blank\"\u003eDatasheet\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/www.openimpulse.com\/blog\/wp-content\/uploads\/wpsc\/downloadables\/MT8870-Schematic-Diagram.pdf\" target=\"_blank\"\u003eSchematic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/www.electronicwings.com\/arduino\/mt8870-dtmf-decoder-interfacing-with-arduino-uno\" target=\"_blank\"\u003eSample code\u003c\/a\u003e\u003cbr\u003e\u003cbr\u003e\u003cspan style=\"font-size: 13.3333px;\"\u003e\u003cbr\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cul\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45814809887009,"sku":"AC047","price":62.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/dtmf-mt8870-audio-decoder-module-1601.jpg?v=1689674931"},{"product_id":"lm358-dual-operational-amplifiers-dip","title":"Op-Amp LM358 Dual Operational Amplifier DIP-8 3pcs","description":"\u003cdiv class=\"product-copy\"\u003e\n\n\u003cp\u003eThe LM358 Dual Operational Amplifiers is a low-cost, low-power and easy to use dual channel op-amp. It is designed for single power supply over multiple range of voltages. The LM358 can be used as a conventional op-amp circuit, gain block amplifiers, and transducers. It can operate from 3V to 32V DC power source and up to 20mA per channel. This is a 8-pin DIP package.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-weight: bold;\"\u003eQUICK SPECS:\u003c\/span\u003e\u003c\/p\u003e\n\n\u003cul\u003e\n\u003cli\u003eThe LM358 has two compensated frequency for unity gain\u003c\/li\u003e\n\u003cli\u003eVoltage Gain is 100dB\u003cbr\u003e\n\u003c\/li\u003e\n\u003cli\u003eBandwidth is 1MHz\u003c\/li\u003e\n\u003cli\u003ePower supply range is 3V to 32V\u003c\/li\u003e\n\u003cli\u003eThe supply current drain is at ~500 μA\u003c\/li\u003e\n\u003cli\u003eVoltage swing is large\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c\/div\u003e\n\n\u003cstyle\u003e\n.product-copy{line-height:1.7}\n.product-copy \u003e * + *{margin-top:1rem}\n.product-copy h2{margin:1.4em 0 .6em}\n.product-copy p{margin:0 0 1em}\n.product-copy ul,.product-copy ol{margin:0 0 1.2em 1.2em}\n.product-copy li{margin:.35em 0}\n.product-copy table{width:100%;border-collapse:collapse;margin:1.2em 0}\n.product-copy table th,\n.product-copy table td{border:1px solid #eee;padding:.6em .75em;text-align:left}\n.faq-list{margin:1.2rem 0 1.4rem}\n.faq{border:1px solid #e6e6e6;border-radius:12px;padding:.75rem 1rem;margin:.6rem 0;background:#fafafa}\n.faq summary{font-weight:600;cursor:pointer}\n@media (min-width:768px){ .product-copy{font-size:1.02rem} }\n\u003c\/style\u003e","brand":"circuitrocks","offers":[{"title":"Default Title","offer_id":45816091836705,"sku":"AM133","price":69.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/lm358-dual-operational-amplifiers-dip-white.jpg?v=1778911947"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/collections\/Audioo_5c64baee-2551-48ce-9122-edee872d569e.png?v=1776751790","url":"https:\/\/circuit.rocks\/collections\/audio.oembed?page=4","provider":"circuitrocks","version":"1.0","type":"link"}