Matrix only using every two rows?

1

Using an adafruit bonnet, pi4 and a 32x64 matrix I’ve got it working except it only lights up every two rows no matter what combination of settings i use. If anyone has any ideas I’d be very grateful

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image4032×3024 3.28 MB

2

It’s difficult to help without knowing what settings you are using.

That said, from the picture, it looks like address line B isn’t getting through, either something wrong with your IO output (line used by something else), or a bad cable, or a bad panel.
Did you read the entire README, and configured your Pi correctly to stop daemons and IO assignment in the Pi boot config?

3

Hello, I have a similar problem. I am able to run demos using an esp32 board without any black bars in between.

Could you please give a hint about stopping daemons and IO assignment, looks like I missed something in the readme file

Thanks

4

honestly I can’t tell you more than what’s in the readme.
I think some kernel configs can take some IO lines that could in turn cause this, but I can’t tell you which one would do what.
That said, do make sure that all your wiring is good too, that’s probably the first culprit right there.

5

thanks, change to adafruit hat configuration and connected all pins again, now running without problems

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