[Solved] Can I launch Rpi3 with external gpio 5v?


#1

I want to make power input with 5v gpio and gnd gpio on Rpi3.

But Matrix creator use all gpio port.

So I have a question about external gpio of matrix creator.

When I connect to 5v and gnd(23/25 or 24/26) pin of matrix creator external gpio, does Rpi3 and matrix-creator work?

image

Simple question with picture: two picture(pic1 and pic2) work equivalently?


#2

This way of powering the MATRIX Creator and Raspberry Pi is not recommended because you are bypassing the fuse protection (F3) present in the Raspberry Pi board :
image
[from https://www.raspberrypi.org/app/uploads/2012/04/Raspberry-Pi-Schematics-R1.0.pdf]

Besides that, it should work, but again, it’s not recommended unless you really know what you are doing and take it your own risk.

Let us know how it goes.


#3

Thank you for your advice.

Exactly, I don’t know what I doing :).

So, we decide using an auxiliary battery for mobile devices(ex. smartphone).

It makes the system to complicate but safety.

We think safety is more important.

Thank you.