1

The Arduino can be powered via USB, power jack or VIN/GND pins.

Does the Raspberry PI 2 offer options for power other than the microUSB connector ?

1 Answer 1

7

Yes.

  • You can power it via the ground and 5V pins on the expansion header.
  • Once it's booted you can also back power it via the USB (although I doubt that this is sensible).

Both those methods bypass any protection afforded by the 2 amp polyfuse.

4
  • Thank you(+1). Good to know, although bypassing protection sounds like looking for trouble :) Commented Apr 27, 2015 at 18:07
  • 1
    @GeorgeProfenza: It is most definitely asking for trouble. If you bypass the polyfuse, you need to make sure than your own circuitry will handle that. It's doable, but a pain.
    – Jacobm001
    Commented Apr 27, 2015 at 18:08
  • @Joan, is it correct that you can theoretically also power the rPi over the 3.3V pin, as the broadcom itself runs on 3.3V? I recall having read this somewhere.
    – Phil B.
    Commented Apr 27, 2015 at 18:45
  • @PhilB. Yes, the Pi itself only needs just over 3V. The USB ports, HDMI etc. need 5V to work properly. See daveakerman.com/?p=1154 for someone running off 3V.
    – joan
    Commented Apr 27, 2015 at 18:50

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.