{"product_id":"sparkfun-qwiic-scale-nau7802","title":"SparkFun Qwiic Scale - NAU7802","description":"\u003cp\u003eThe SparkFun Qwiic Scale is a small breakout board for the NAU7802 that allows you to easily read load cells to accurately measure the weight of an object.\u003c\/p\u003e\n\u003cp\u003eBy connecting the board to your microcontroller you will be able to read the changes in the resistance of a load cell and, with some calibration, you'll be able to get very accurate weight measurements. This can be handy for creating your own industrial scale, process control or simple presence detection. Utilizing our handy Qwiic system, no soldering is required to connect it to the rest of your system. However, we still have broken out 0.1\"-spaced pins in case you prefer to use a breadboard.\u003c\/p\u003e\n\u003cp\u003eBy connecting a load cell to the Qwiic Scale you will be able to translate sensor data into something your microcontroller can read. The NAU7802 is an ADC with built-in gain and I\u003csup\u003e2\u003c\/sup\u003eC output to amplify and convert the readings from a standard load cell. A load cell is basically a device that translates pressure or force into electrical signals. In most cases, this signal is very small and needs to be amplified. There are many popular chips that read the change and amplify it, but the NAU7802 goes one step further and converts everything to a true I\u003csup\u003e2\u003c\/sup\u003eC output (attached to a Qwiic connector).\u003c\/p\u003e\n\u003cp\u003eThe board provides a four spring terminal to connect your load cell with no soldering required. In addition to the I\u003csup\u003e2\u003c\/sup\u003eC pins, the board also breaks out an interrupt pin and AVDD to the edge of the board. The differential input signals (plus a second set of input signals) are broken out to the middle of the board, as well.\u003c\/p\u003e\n\u003cp\u003eThe board and scales are \u003cstrong\u003eNOT\u003c\/strong\u003e included\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote: \u003c\/strong\u003eThe I\u003csup\u003e2\u003c\/sup\u003eC address of the NAU7802 is 0x2A and is hardware-defined. A multiplexer\/Mux is required to communicate to multiple NAU7802 sensors on a single bus. If you need to use more than one NAU7802 sensor consider using the Qwiic Mux Breakout.\u003c\/p\u003e\n\u003cp\u003eGet Started with the Qwiic Scale Hookup Guide\u003c\/p\u003e\n\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/6-bod9ndOtY?si=PjeLgnCYyYJgE8ae\u0026amp;start=12\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eOperating Voltage: 3.3V (NAU7802: 2.7V-5.5V)\u003c\/li\u003e\n\u003cli\u003e24-bit Dual-Channel Analog to Digital Converter\u003c\/li\u003e\n\u003cli\u003eProgrammable Gain Amplifier\u003c\/li\u003e\n\u003cli\u003eOn-chip temperature sensor\u003c\/li\u003e\n\u003cli\u003eSimultaneous 50Hz and 60Hz rejection\u003c\/li\u003e\n\u003cli\u003eProgrammable PGA gains from 1 to 128\u003c\/li\u003e\n\u003cli\u003eProgrammable ADC data output rates\u003c\/li\u003e\n\u003cli\u003eExternal differential reference voltage range from 0.1V to 5V\u003c\/li\u003e\n\u003cli\u003eLow Power Consumption and Programmable Power Management Options\n\u003cul\u003e\n\u003cli\u003e\u0026lt;1uA standby current\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003e2x Qwiic Connectors\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eResources\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eSchematic\u003c\/li\u003e\n\u003cli\u003eEagleFiles\u003c\/li\u003e\n\u003cli\u003eHookup Guide\u003c\/li\u003e\n\u003cli\u003e\nDatasheet (NAU7802)\u003c\/li\u003e\n\u003cli\u003eGetting Started with Load Cells\u003c\/li\u003e\n\u003cli\u003eSparkFun Qwiic Scale NAU7802 Arduino Library\u003c\/li\u003e\n\u003cli\u003eHardware Repo\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Sparkfun","offers":[{"title":"Default Title","offer_id":43493249843277,"sku":"cns1787258124973","price":13.88,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0644\/1182\/8301\/files\/sparkfun-qwiic-scale---nau7802_1.jpg?v=1787258129","url":"https:\/\/www.grandorchard.shop\/products\/sparkfun-qwiic-scale-nau7802","provider":"My Store","version":"1.0","type":"link"}