SparkFun Load Cell Amplifier - HX711 Small Breakout Board Read Load Cells to Measure Weight Four-Wire Wheatstone Bridge Configuration Connect to sensors Build Scale Process Control Presence Detection

The SparkFun Load Cell Amplifier is a small breakout board for the HX711 IC that allows you to easily read load cells to measure weight By connecting the amplifier to your microcontroller you will be able to read the changes in the resistance of the load cell and with some calibration youll be able to get very accurate weight measurements This can be handy for creating your own industrial scale process control or simple presence detectionThis version of the SparkFun Load Cell Amplifier features a few changes that you specifically asked for We have separated the analog and digital supply as well as added a 33uH inductor and a 01uF filter capacitor for digital supplyThe HX711 uses a twowire interface Clock and Data for communication Any microcontrollers GPIO pins should work and numerous libraries have been written making it easy to read data from the HX711 Check the hookup guide below for more informationLoad cells use a fourwire Wheatstone bridge configuration to connect to the HX711 These are commonly colored RED BLK WHT GRN and YLW Each color corresponds to the conventional color coding of load cellsRed Excitation or VCCBlack Excitation or GNDWhite Amplifier Signal or OutputGreen A S or OYellow ShieldThe YLW pin acts as an optional input that is not hooked up to the strain gauge but is utilized to ground and shield against outside EMI electromagnetic interference Please keep in mind that some load cells might have slight variations in color coding