{"title":"Adafruit NAU7802 24-Bit ADC - STEMMA QT / Qwiic","handle":"adafruit-nau7802-24-bit-adc-stemma-qt-qwiic","url":"/products/adafruit-nau7802-24-bit-adc-stemma-qt-qwiic","description":"The Adafruit NAU7802 is a high-resolution 24-bit differential ADC breakout designed specifically for reading strain gauges, load cells, and other Wheatstone bridge sensors. With built-in gain amplification and calibration circuitry, it converts the tiny voltage changes from bridge sensors into precise digital readings over I2C.\n\nThe breakout includes screw terminal blocks for connecting 4-wire sensors: E− (ground), E+ (configurable reference voltage from 2.4–4.0 V), and A−/A+ differential inputs. STEMMA QT / Qwiic connectors provide solderless I2C wiring to your microcontroller.\n\nKey Features\n\n\n24-Bit Differential ADC – Ultra-high resolution for precise strain and force measurements\n\nBuilt-In Gain & Calibration – Configurable gain and on-chip calibration for Wheatstone bridge sensors\n\nConfigurable Reference Voltage – E+ output adjustable from 2.4 V to 4.0 V\n\nScrew Terminal Blocks – Four terminals (E−, E+, A−, A+) for easy sensor wiring\n\nI2C Interface – Fixed address; use a multiplexer for multiple sensors on one bus\n\nSTEMMA QT / Qwiic Connectors – Solderless I2C connection (cable not included)\n\n\nTypical Wiring\n\n\nE− → Ground (often black wire)\n\nE+ → Excitation voltage (often red wire)\n\nA− → Differential output − (often white wire)\n\nA+ → Differential output + (often green wire)\n\n\nIdeal For\n\nDigital scales and weight measurement\nStrain gauge and load cell applications\nForce and pressure sensing\nIndustrial and scientific measurement projects\n\n\nPackage Contents\n\n1× Adafruit NAU7802 24-Bit ADC Breakout\n4× Screw terminal blocks\n\n\nResources\n\nArduino Library (GitHub)\nCircuitPython Library (GitHub)\nWorking with Multiple I2C Devices\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":2190,"title":"Default Title","sku":"AF-4538","price":12.3,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}