Power gauge

arduino uno usb power gauge

Measure power consumption and current draw from a circuit. Three hardware is connected:

  1. Arduino UNO (or any other USB connected circuit) to USB power gauge
  2. Adafruit USB Power Gauge to a power source
  3. USB to TTL to laptop for reading the serial console

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

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

Serial console

Serial output from the firmware.

Power gauge serial console

Prototype

A photo of the actual setup.

Power gauge prototype

References

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