Introduction

This blueprint shows how to pull in a 3rd party library (the SparkFun NAU7802 driver) into a Particle project to measure weight using a load cell.

Supported devices

Hardware and supplies

• Particle Muon or M-SoM
• USB cable
• QWIIC cable
• Load cell
• NAU7802 QWIIC breakout

Project description:

This blueprint demonstrates how to integrate a NAU7802-based QWIIC scale breakout with a load cell to measure weight on your Particle device.

Key features:

• Uses the SparkFun NAU7802 Arduino library as a 3rd party dependency
• Implements cloud functions for tare and calibration
• Stores calibration values in EEPROM for persistence across reboots
• Outputs weight readings via serial monitor