Troubleshoot LED Matrix Cube

[alquin_cook]

I followed the RGB LED Matrix Cube with 25,000 LEDs guide and even made the code changes mentioned here viewtopic.php?t=214706&hilit=RGB+LED+Matrix+Cube to get the cube working.

However, now I need some help troubleshooting the top and left panels. The panels do not display the words correctly from the images/minecraft.png. The other panels are working correctly.

I have disassembled the cube and check the connections several times. I have tried running the globe program, but I am still having the same problem.

Are there any recommendations on how to fix this problem?

top panel.jpg (481.42 KiB) Viewed 48 times

left panel.jpg (375.24 KiB) Viewed 48 times

right panel.png (491.12 KiB) Viewed 48 times

Works

[alquin_cook]

I am having the same issue found here: viewtopic.php?t=193055

I have re-soldered my GPIO 4 to 18 jumper and the E8 jumper.

[mhhf]

I had the same issue. Solved it by increasing the gpio_slowdown from 4 to 5, although it doesn't as 'good' anymore, the image doesn't glitches.
You can find the setting in the imageviewer.py among other things.

[adafruit_support_carter]

That'd be an easy thing to try. Looks like the original project was based on a Pi4:
https://learn.adafruit.com/rgb-led-matr ... i/overview

So if using a Pi5, may need more slow down.