This seems like a simple enough question but it hasn't been easy to find an answer!

I have a Pi3 (with recommended PSU), official screen, official camera and I've now added the respeaker 2-mics Pi Hat: https://www.seeedstudio.com/ReSpeaker-2-Mics-Pi-HAT-p-2874.html

Originally I powered the screen from the GPIO as per the instructions: micro USB into Pi and GPIO 5v +- into screen. I've now got the Respeaker Pi Hat which requires the use of all the GPIO pins and forces me to use a 2nd micro USB supply just for the screen!

The question is, would it possible to tap into the 2 solder pads on the underside of the Pi where the micro USB is situated and send power to the screen from here? Ideally I would like to avoid soldering straight onto the pi but rather that than the use of two power supplies. Unless there is another solution?

1 Answer 1


Soldering to the Pi board is not recommended; for a start the solder is low lead, and has a high melting point.

If you are going to try, don't even attempt the solder pads - there are test points with the supply voltage.

It would be better to solder to the pins on the HAT; even better use proper external connections.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.