{"product_id":"openscale-with-atmega328p-ft231-hx711-sparkfun","title":"SparkFun OpenScale - Load Cell Amplifier with ATmega328P \u0026 HX711","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 \u003ch2\u003eTurn a Load Cell into a Complete Serial Scale System\u003c\/h2\u003e\n \u003cp\u003eThe \u003cstrong\u003eOpenScale\u003c\/strong\u003e is an open-source weighing board that turns a standard load cell into a complete long-term scale system with live serial output and simple setup.\u003c\/p\u003e\n \u003cp\u003eIt combines a microcontroller, HX711 24-bit ADC, USB-to-serial connection, and temperature support on one board, so you can build a custom scale without piecing together multiple modules.\u003c\/p\u003e\n \u003cdiv class=\"note\"\u003e\n\u003cstrong\u003eImportant:\u003c\/strong\u003e SparkFun notes that you will need a USB cable with a Mini-B connector for direct computer connection.\u003c\/div\u003e\n \u003ch3\u003eWhy you'll love it\u003c\/h3\u003e\n \u003cul\u003e\n \u003cli\u003e\n\u003cstrong\u003e24-bit HX711 ADC onboard:\u003c\/strong\u003e Designed for precise weight readings\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eATmega328P-based control:\u003c\/strong\u003e Ready for configuration and serial output\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSimple serial menu:\u003c\/strong\u003e Easy calibration and setup without deep firmware work\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eSupports standard load cells:\u003c\/strong\u003e Good for one load cell or grouped sensors\u003c\/li\u003e\n \u003cli\u003e\n\u003cstrong\u003eLogs temperature alongside weight:\u003c\/strong\u003e Useful for long-term monitoring\u003c\/li\u003e\n \u003c\/ul\u003e\n \u003ch3\u003eWhat you can build\u003c\/h3\u003e\n \u003cp\u003eGreat for custom scales, hopper monitoring, industrial experiments, field measurement rigs, process control prototypes, and logging weight over time.\u003c\/p\u003e\n \u003ch3\u003eStarter bundles\u003c\/h3\u003e\n \u003cp\u003ePair it with a load cell, Mini-B USB cable, terminal software or logger, and a stable mounting structure.\u003c\/p\u003e\n \u003ch3\u003eRecommended add-ons\u003c\/h3\u003e\n \u003cp\u003eUseful add-ons include load cells, enclosures, data loggers, cables, and external temperature sensing if needed.\u003c\/p\u003e\n \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n \u003ctable\u003e\n \u003ctr\u003e\n \u003cth\u003eProduct\u003c\/th\u003e\n \u003ctd\u003eSparkFun OpenScale\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eSKU\u003c\/th\u003e\n \u003ctd\u003eSEN-13261\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOperating Voltage\u003c\/th\u003e\n \u003ctd\u003e5V\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOperating Current\u003c\/th\u003e\n \u003ctd\u003e80–100mA\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eADC\u003c\/th\u003e\n \u003ctd\u003eHX711 24-bit ADC\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eOutput Data Rate\u003c\/th\u003e\n \u003ctd\u003eSelectable 10SPS or 80SPS\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eTemperature Support\u003c\/th\u003e\n \u003ctd\u003eLocal and external temperature sensors\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003ctr\u003e\n \u003cth\u003eGain\u003c\/th\u003e\n \u003ctd\u003eFixed and adjustable gain\u003c\/td\u003e\n \u003c\/tr\u003e\n \u003c\/table\u003e\n \u003ch3\u003ePinout \u0026amp; usage notes\u003c\/h3\u003e\n \u003cp\u003eConnect your load cell and power, then use USB serial for live readings and configuration. The board is made for direct long-term scale deployments and serial logging.\u003c\/p\u003e\n \u003ch3\u003eResources \u0026amp; support\u003c\/h3\u003e\n \u003cp\u003e\u003ca href=\"https:\/\/www.sparkfun.com\/sparkfun-openscale.html\"\u003eOfficial SparkFun product page\u003c\/a\u003e | \u003ca href=\"https:\/\/learn.sparkfun.com\/tutorials\/openscale-applications-and-hookup-guide\"\u003eSparkFun hookup guide\u003c\/a\u003e\u003c\/p\u003e\n \u003ch3\u003eWhat’s in the box\u003c\/h3\u003e\n \u003cp\u003e1 × SparkFun OpenScale board\u003c\/p\u003e\n \u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n \u003cdiv class=\"faq-list\"\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat does OpenScale replace?\u003c\/strong\u003e\n It replaces the usual stack of microcontroller, ADC, and serial adapter used in DIY scale builds.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eCan I log readings over time?\u003c\/strong\u003e\n Yes. It is built for long-term weight monitoring and serial output.\n \u003c\/div\u003e\n \u003cdiv class=\"faq\"\u003e\n \u003cstrong\u003eWhat cable do I need?\u003c\/strong\u003e\n SparkFun notes that a USB Mini-B cable is needed for direct computer connection.\n \u003c\/div\u003e\n \u003c\/div\u003e\n\u003c\/div\u003e","brand":"SparkFun","offers":[{"title":"Default Title","offer_id":45836801048865,"sku":"SEN-13261","price":1909.0,"currency_code":"PHP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0777\/1491\/5617\/files\/openscale-with-atmega328p-ft231-hx711-sparkfun-white.jpg?v=1778912120","url":"https:\/\/circuit.rocks\/products\/openscale-with-atmega328p-ft231-hx711-sparkfun","provider":"circuitrocks","version":"1.0","type":"link"}