Power gauge

Updated on 31 August 2021
dev board Arduino UNO
tool USB Power gauge
features usb power gauge
This tutorial is more than 1 year old. If the steps below do not work, then please check the latest versions and the documentations of the individual tools used.

Buy the components

  1. Arduino UNO R3
  2. Adafruit power gauge mini kit
  3. USB to UART CP2102 board

Prototype

A photo of the actual setup.

Power gauge prototype

Serial console

Serial output from the firmware.

Power gauge serial console

Description

Measure power consumption and current draw from a circuit.

Connect the USB power gauge to the USB-TTL board.

  USB Power Gauge USB-TTL Board
Connect GND GND
Connect TX RX

References

  1. Adafruit USB Power Gauge Mini-Kit
  2. USB-Power-Gauge GitHub source code
  3. Adafruit USB Power Gauge Mini-Kit tutorial