{"product_id":"sparkfun-openscale","title":"SparkFun OpenScale","description":"\u003cp\u003e\u003cstrong\u003eThe SparkFun OpenScale turns load cells into a ready-to-use digital scale, streaming accurate weight data over USB. Ideal for quick builds and long-term measurement projects without complex setup or coding.\u003c\/strong\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003cp\u003eBuilding a custom weighing system doesn't have to be a frustrating electronics puzzle. The \u003ca href=\"\/collections\/sparkfun\" title=\"SparkFun Products\"\u003eSparkFun\u003c\/a\u003e \u003cstrong\u003eOpenScale \u003c\/strong\u003eis a\u003cstrong\u003e \u003c\/strong\u003estraightforward, open-source solution that removes the complexity of measuring weight (even when temperature is taken into account). By \u003cstrong\u003ecombining a microcontroller\u003c\/strong\u003e, a \u003cstrong\u003eprecision ADC\u003c\/strong\u003e, and \u003cstrong\u003eUSB-to-serial conversion \u003c\/strong\u003eon a single board, the OpenScale lets you \u003cstrong\u003eturn any standard four or five-wire load cell\u003c\/strong\u003e (or four load sensors in a Wheatstone bridge) \u003cstrong\u003einto a fully functional DIY scale.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePlug-and-Play Precision\u003c\/strong\u003e\u003cbr\u003eGetting accurate mass readings is as easy as plugging in a cable. Powered by an \u003cstrong\u003eonboard ATmega328P microcontroller\u003c\/strong\u003e, the OpenScale is ready to work right out of the box.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eInstant Data:\u003c\/strong\u003e Simply attach your load cell, plug the board into your computer's USB port (you'll need a \u003ca href=\"\/collections\/usb-cables\" title=\"USB Cables\"\u003eUSB cable\u003c\/a\u003e terminated with a Mini-B connector), and open a terminal window at 9,600bps. You will immediately begin seeing live mass readings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple Configuration:\u003c\/strong\u003e An easy-to-navigate serial menu lets you quickly adjust your calibration values, sample rates, timestamps, and precision units without reflash.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Resolution ADC:\u003c\/strong\u003e The onboard HX711 acts as a 24-bit Analog-to-Digital Converter, ensuring your weight readings are incredibly precise.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eDesigned for Long-Term Use\u003c\/strong\u003e\u003cbr\u003eThe OpenScale was purpose-built for continuous, long-term applications that require constant readings without user intervention. An equipped OpenScale can remain in place for months at a time, reliably transferring data directly to your serial terminal or to an attached data logger, such as the \u003ca title=\"SparkFun OpenLog\" href=\"\/products\/sparkfun-openlog\"\u003eSparkFun OpenLog\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eBecause physical load cells can drift slightly with changes in weather, we included an \u003cstrong\u003eonboard TMP102 sensor\u003c\/strong\u003e to log ambient temperature alongside your weight data.\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/HZtXN-KcssA?si=PLmLs8en10qUK_WD\u0026amp;start=50\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003ePower Cycling above 500ms\u003c\/li\u003e\n\u003cli\u003eSelectable 10SPS or 80SPS Output Data Rate\u003c\/li\u003e\n\u003cli\u003eLocal \u0026amp; External Temperature Sensors\u003c\/li\u003e\n\u003cli\u003eFixed \u0026amp; Adjustable Gain\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Voltage: 5V\u003c\/li\u003e\n\u003cli\u003eOperating Ampage: 80-100mA\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\/0\/4\/5\/1\/9\/SparkFun_openScale_schematic.pdf\" rel=\"noopener\" title=\"Schematic\" target=\"_blank\"\u003eSchematic\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/assets\/b\/f\/5\/a\/3\/OpenScale_EagleFiles.zip\" rel=\"noopener\" title=\"Eagle Files\" target=\"_blank\"\u003eEagle Files\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/learn.sparkfun.com\/tutorials\/openscale-applications-and-hookup-guide\" 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:\/\/cdn.sparkfun.com\/datasheets\/Sensors\/ForceFlex\/SparkFun_OpenScale_Arduino.zip\" rel=\"noopener\" title=\"Arduino Library\" target=\"_blank\"\u003eArduino Library\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/cdn.sparkfun.com\/datasheets\/Sensors\/ForceFlex\/SparkFun_OpenScale_Particle.zip\" rel=\"noopener\" title=\"Particle Sketch\" target=\"_blank\"\u003eParticle Sketch\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/github.com\/sparkfun\/OpenScale\" rel=\"noopener\" title=\"GitHub\" target=\"_blank\"\u003eGitHub\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\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sparkfun","offers":[{"title":"Default Title","offer_id":55528290255233,"sku":"SEN-13261","price":38.7,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/sparkfun-openscale-sparkfun-sen-13261-1232428398.jpg?v=1776250149","url":"https:\/\/thepihut.com\/products\/sparkfun-openscale","provider":"The Pi Hut","version":"1.0","type":"link"}