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RGB Matrix Bonnet does not fit on RPi 4?
Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.

RGB Matrix Bonnet does not fit on RPi 4?

by schmidtwmark on Thu Aug 20, 2020 11:56 am

Hi, I've been working on a project that uses the RGB Matrix Bonnet https://www.adafruit.com/product/3211

I started off using Raspberry Pi 3B+, but now I'm really only able to find Raspberry Pi 4's. The problem is that the Pi 4's POE header gets in the way. I'm not able to get any signal output to the matrix--I'm not sure if this is because of the header getting in the way or not, but I think it's a possibility.

I don't see anything in the documentation about needing to remove this header on Pi4s or anything, but it definitely doesn't seem like it connects properly.

Here are some photos of what I mean:
https://imgur.com/a/MRP8ami

In the first photo, you can see the 4 POE header pins
In the second photo, you can see how the POE pins block the bonnet, especially when compared to how it properly sits on a Pi 3.

Should I just remove the POE header? If so, how do I do that?

schmidtwmark
 
Posts: 1
Joined: Mon Oct 29, 2018 6:26 pm

Re: RGB Matrix Bonnet does not fit on RPi 4?

by adafruit_support_carter on Thu Aug 20, 2020 1:13 pm

You can add one of these if you need a little more room:
https://www.adafruit.com/product/4079

But it should work even without that. The PoE connector does come close, but it shouldn't prevent the Bonnet from connecting. By the time the PoE connector hits the Bonnet, the Bonnet should have good connection on the main GPIO header.

adafruit_support_carter
 
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Joined: Tue Nov 29, 2016 2:45 pm

Please be positive and constructive with your questions and comments.