{"product_id":"sparkfun-openscale-iot","title":"SparkFun OpenScale - IoT","description":"\u003cp\u003e\u003cstrong\u003eThe SparkFun OpenScale IoT makes it easy to turn a load cell into a wireless, high-accuracy scale with built-in WiFi, Bluetooth, and temperature sensing—ideal for long-term monitoring or precise measurements without complex setup.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003eBuilding a custom, high-accuracy scale shouldn't require writing complex code from scratch. The \u003ca href=\"\/collections\/sparkfun\" title=\"SparkFun Products\"\u003eSparkFun\u003c\/a\u003e OpenScale IoT takes the hassle out of measuring weight and temperature with an easy-to-use, wireless solution built around the powerful \u003cstrong\u003eESP32-PICO-MINI\u003c\/strong\u003e. This updated version of the original \u003ca href=\"\/products\/sparkfun-openscale\" title=\"SparkFun OpenScale\"\u003eSparkFun OpenScale\u003c\/a\u003e supports multiple load cell types and lets users access the device via multiple interfaces of their choosing. That means, regardless of whether you are monitoring the static load of a beehive over several months or need to precisely weigh the right amount of beans for the perfect cup of coffee, \u003cstrong\u003ethis board turns any standard load cell into a fully functional, wirelessly connected weighing system\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Connectivity \u0026amp; Setup\u003c\/strong\u003e\u003cbr\u003eGetting your OpenScale up and running is incredibly simple. Just attach any four or five-wire load cell, and you'll be able to configure your calibration, sample rates, and precision through a straightforward terminal menu. This enables you to turn a load cell or four load sensors, arranged in a Wheatstone bridge configuration, into a DIY weigh scale for whatever the application.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBluetooth \u0026amp; Wired Config:\u003c\/strong\u003e Connect via Bluetooth\/BLE or a wired USB-C\/serial connection to access the terminal menu at 115,200bps. (Note: Terminal configuration via Bluetooth is not supported on Apple devices.)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWiFi Integration:\u003c\/strong\u003e Connect the board to your local 2.4GHz WiFi network to view your live data and perform Over-The-Air (OTA) firmware updates.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQwiic Expansion:\u003c\/strong\u003e Easily add additional I2C sensors and displays to your project using the integrated \u003ca href=\"\/collections\/qwiic-stemma-qt\" title=\"Qwiic and STEMMA QT\"\u003eQwiic\u003c\/a\u003e connector. No soldering required!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eConnecting the OpenScale IoT to a Bluetooth host device requires a terminal application installed on it; if you're connecting it to a phone or other mobile device, make sure to install a terminal application of your choice. However, if connecting to this OpenScale wirelessly isn't quite your style, you can still interface with it via a wired serial connection over \u003ca href=\"\/collections\/usb-cables\/usb-style_usb-c\" title=\"USB Cables\"\u003eUSB-C\u003c\/a\u003e or serial port.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePrecision \u0026amp; Long-Term Use\u003c\/strong\u003e\u003cbr\u003eTo ensure you get the most accurate data possible, the OpenScale - IoT combines multiple sensing technologies into a single footprint. The \u003cstrong\u003eonboard HX711\u003c\/strong\u003e acts as a \u003cstrong\u003e24-bit ADC\u003c\/strong\u003e when, let’s say, you attach four individual strain gauges to read your Wheatstone bridge using a combinator with high precision.\u003c\/p\u003e\n\u003cp\u003eThe OpenScale design is intended for projects and applications where the load is static or where constant readings are needed without user intervention (for example, on a conveyor belt system). A load cell equipped with an OpenScale IoT can remain in place for months without user interaction! Because physical load cells can drift slightly with environmental changes, the board also features an \u003cstrong\u003eintegrated TMP102 sensor\u003c\/strong\u003e to log ambient temperature. We even added a 3-pin screw terminal to attach an external temperature probe using the one-wire interface directly at the measurement site!\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/S5bnzW3TFZw?si=QhRru8LCQQtQf_-2\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures and Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eESP32-PICO-MINI Module\n\u003cul\u003e\n\u003cli\u003e2.4GHz WiFi, Bluetooth®, and Bluetooth LE supported\u003c\/li\u003e\n\u003cli\u003eOn-Chip PCB antenna\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eSerial configuration menu supported over wired and Bluetooth connections\u003c\/li\u003e\n\u003cli\u003eOver-the-Air (OTA) firmware updates with WiFi connection\u003c\/li\u003e\n\u003cli\u003eOperating Voltage: 5V\u003c\/li\u003e\n\u003cli\u003eOperating Amperage: 80-100mA\u003c\/li\u003e\n\u003cli\u003ePower Cycling above 500ms\u003c\/li\u003e\n\u003cli\u003eSelectable 10SPS or 80SPS Output Data Rate\u003c\/li\u003e\n\u003cli\u003eOn Board \u0026amp; External Temperature Sensors\u003c\/li\u003e\n\u003cli\u003eFixed \u0026amp; Adjustable Gain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eResources\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/7\/d\/5\/b\/5\/SparkFun_OpenScale-IoT.pdf\" rel=\"noopener\" title=\"Schematic\" target=\"_blank\"\u003eSchematic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/3\/a\/7\/4\/b\/SparkFun_OpenScale-IoT.zip\" rel=\"noopener\" title=\"KiCad Files\" target=\"_blank\"\u003eKiCad Files\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/0\/9\/8\/5\/1\/SparkFun_OpenScale-IoT.jpg\" rel=\"noopener\" title=\"Board Dimensions\" target=\"_blank\"\u003eBoard Dimensions\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/docs.sparkfun.com\/SparkFun_OpenScale_IoT\/\" rel=\"noopener\" title=\"Hookup Guide\" target=\"_blank\"\u003eHookup Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDatasheets\u003c\/strong\u003e:\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/b\/f\/5\/a\/e\/hx711F_EN.pdf\" rel=\"noopener\" title=\"HX711 Datasheet\" target=\"_blank\"\u003eHX711\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/2\/6\/8\/0\/c\/tmp102-Datasheet.pdf\" rel=\"noopener\" title=\"TMP102 Datasheet\" target=\"_blank\"\u003eTMP102\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/sparkfun\/SparkFun_OpenScale_IoT_Binaries\" rel=\"noopener\" title=\"OpenScale - IoT Firmware Binaries\" target=\"_blank\"\u003eOpenScale - IoT Firmware Binaries\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/sparkfun\/SparkFun_OpenScale_IoT\" rel=\"noopener\" title=\"GitHub Repository\" target=\"_blank\"\u003eGitHub Repository\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003ePackage Contents\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e1x SparkFun OpenScale - IoT\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sparkfun","offers":[{"title":"Default Title","offer_id":55528952693121,"sku":"SEN-30282","price":43.2,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/sparkfun-openscale-iot-sparkfun-sen-30282-1232438650.jpg?v=1776257350","url":"https:\/\/thepihut.com\/products\/sparkfun-openscale-iot","provider":"The Pi Hut","version":"1.0","type":"link"}