Wide Input Shim to RPi 3


#1

I know the Wide Input Shim is plug-and-play for the Pi Zero, but are there any instructions for wiring it up to other Pi’s?

Is it just a case of wiring the corresponding pins to each other?

I ask because I’m trying to power my Picade with 12v (for future mods) and want to use this to regulate the volate to the Pi 3 itself.


#2

Looking at the product page, its for any Pi, not just the Zero. Assuming it will supply enough current it should work with a 3B etc. It has a max of 2A out. That “might” be iffy driving a Pi and a display board. If you load up a plain jain Raspbian install it will tell you if there is a problem by displaying the lightning bolt low voltage warning. Overcurrent usually produces an undervolt condition that will get you the onscreen warning.


#3

Thanks for the reply @alphanumeric. I forgot to mention though that the Picade comes with a Picade X Hat which sits on top of the RPi3, so I can’t place them directly on top of each other.

Basically, I just need to know which pins are 5v out and Gnd from the Wide Input Shim. I could match them to the Pi headers they would normally connect to, but my thinking it they are only output pins?


#4

Pin 2 and or Pin 4 is the 5V out of the shim and into the Pi. Pin 6 and or Pin 9 is ground. The separate EN pin can be used to turn off the 5 V out of the wide input shim.

Its just a pin for pin match to those GPIO pins used. Not all are used though.

2,4,6
1,3,5


#5

Ahh, great, that’s exactly what I wanted to know, thanks!

I found a good site for reference (which I think was made by Phil?) – https://pinout.xyz/pinout/ground


#6

Yes, I’m pretty sure Phil started that page. I have it bookmarked. Wide input shim hasn’t been added yet or I would have linked to it. ;)


#7

Haha, I really appreciate the help :)