Wide Input Shim to RPi 3

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.

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.

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?

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.


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

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. ;)

Haha, I really appreciate the help :)

is it sufficient to solder only PIN 2,4,6?

For getting power to the Pi I would solder 2,4,6, and 9. Pin 9 might not be used, you could try with just 2,4,and 6, and if it doesn’t work then solder the other ground pin 9

thanks. Pin 9 is nevertheless good for stability

If it was me I’d just solder all of them. Soldering is second nature to me though. I’m a retired electronic technician. I can see those that don’t do it very often just wanting to only solder what they have too though. ;)

Same here. But I will sell this WIS to customers. So I like to recommend them the minimum. Which is due to my measurements Pin 1 and Pin 6 and for stability Pin 10.
BUT today I tested this WIS outdoor on summits after a long works (about 1°C) - and it stops function on the second summit. Very frustrating. Is there a idea around, how to analyze the reason?