{"product_id":"esp8266-wifi-gpio-shield-for-arduino","title":"ESP8266 WiFi GPIO Shield 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;font-size:.97em}\n .product-copy table th,.product-copy table td{border:1px solid #e5e7eb;padding:.65em .8em;text-align:left;vertical-align:top}\n .product-copy table th{background:#f9fafb}\n .product-copy table thead th{background:#f3f4f6;font-weight:600;color:#374151}\n .product-copy table tbody tr:nth-child(even) td{background:#fafafa}\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 .badge{display:inline-block;background:#dbeafe;color:#1d4ed8;border-radius:6px;padding:.1em .55em;font-size:.85em;font-weight:600;margin-right:.3em}\n\u003c\/style\u003e\n\n\u003ch2\u003eESP8266 WiFi Shield for Arduino — Add WiFi to Any Arduino with a Snap\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eESP8266 WiFi GPIO Shield\u003c\/strong\u003e plugs directly onto an Arduino Uno, Leonardo, or compatible board to add WiFi connectivity\nwithout any wiring — just stack it on, install the library, and your Arduino is online.\nUnlike USB-dongle WiFi solutions, this shield exposes additional GPIO pins from the ESP8266 that your Arduino sketch can also control,\nmaking it both a WiFi adapter and a GPIO expander in one.\u003c\/p\u003e\n\n\u003ch3\u003eWiFi Shield vs ESP-01 + breadboard wiring — why use a shield?\u003c\/h3\u003e\n\u003ctable\u003e\n \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eWiFi GPIO Shield (this)\u003c\/th\u003e\n\u003cth\u003eESP-01 + Wires\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n \u003ctbody\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSetup\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePlug-and-play — no wiring\u003c\/td\u003e\n\u003ctd\u003eRequires wiring, level shifter, 3.3V supply\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eExtra GPIO\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e✅ ESP8266 GPIO accessible from Arduino\u003c\/td\u003e\n\u003ctd\u003eLimited — only TX\/RX bridge\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eStability\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSolid PCB connection\u003c\/td\u003e\n\u003ctd\u003eBreadboard\/jumper reliability issues\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBest for\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eClean, stackable production-style builds\u003c\/td\u003e\n\u003ctd\u003eQuick prototyping on a budget\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003eArduino shield form factor:\u003c\/strong\u003e Stacks directly onto Uno, Leonardo, or compatible boards\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eESP8266 WiFi onboard:\u003c\/strong\u003e 802.11 b\/g\/n, Station + AP modes\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eGPIO breakout:\u003c\/strong\u003e ESP8266 GPIO pins accessible for additional I\/O\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eNo wiring required:\u003c\/strong\u003e Power and serial communication via shield headers\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eAT command interface:\u003c\/strong\u003e Use with standard ESP8266 AT firmware on host Arduino\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003ctable\u003e\n \u003ctr\u003e\n\u003cth\u003eCore Chip\u003c\/th\u003e\n\u003ctd\u003eESP8266\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eForm Factor\u003c\/th\u003e\n\u003ctd\u003eArduino shield (Uno \/ Leonardo compatible)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWiFi Standard\u003c\/th\u003e\n\u003ctd\u003e802.11 b\/g\/n, 2.4 GHz\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eWiFi Modes\u003c\/th\u003e\n\u003ctd\u003eStation, AP, Station+AP\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eInterface to Arduino\u003c\/th\u003e\n\u003ctd\u003eUART (AT commands via shield headers)\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eExtra GPIO\u003c\/th\u003e\n\u003ctd\u003eESP8266 GPIO pins broken out\u003c\/td\u003e\n\u003c\/tr\u003e\n \u003ctr\u003e\n\u003cth\u003eOperating Voltage\u003c\/th\u003e\n\u003ctd\u003e3.3V (onboard regulator from Arduino 5V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eWhich Arduino boards is it compatible with?\u003c\/strong\u003e Designed for Arduino Uno and Leonardo form factors. May work with other compatible boards that follow the same header layout.\u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eHow does the Arduino communicate with the ESP8266?\u003c\/strong\u003e Via UART using AT commands. The shield routes the ESP8266 serial pins to the Arduino's serial header pins.\u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n\u003cstrong\u003eCan I program the ESP8266 on this shield independently?\u003c\/strong\u003e Depending on the board design, you may be able to access the ESP8266 programming pins. Check the PCB for a UART programming header or GPIO0 boot pin access.\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Circuitrocks","offers":[{"title":"Default Title","offer_id":45838107279649,"sku":"2070","price":275.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/products\/esp8266-wifi-gpio-shield-for-arduino-2293.jpg?v=1689741662","url":"https:\/\/circuit.rocks\/products\/esp8266-wifi-gpio-shield-for-arduino","provider":"circuitrocks","version":"1.0","type":"link"}