Separate power supplies for Raspberry Pi and motor driver board

December 28, 2023, 11:54

irmkb

Hi! 👋 I have a Raspberry Pi 5 and this motor driver board: https://www.waveshare.com/rpi-motor-driver-board.htm The board is connected to a battery pack to power small motors and can supply up to 5V2A to the Pi. Because this is not sufficient for the Pi 5, I need to connect a dedicated power supply to the Pi. I want to avoid any problems that could be caused by having two power supplies connected to each other. Would disconnecting the 5V GPIO pins (e.g. by wrapping them in electrical tape) be the best/easiest way to use this motor driver board with the Pi 5?

oops.se

The schema is a bit "confusing" but it looks like that you can use the power slide to select the power source. https://files.waveshare.com/upload/9/90/RPi-Motor-Driver-Board-Schematic.pdf

irmkb

oh, that would be perfect. i'll try that, thank you!

oops.se

Measure it to be sure.

irmkb

after some problems with a broken motor, this worked! thanks again.