Hello, this is my first time dealing with electronics and my led matrix just arrived. I got it running but there are artifacts on the last few pixels. The matrix somehow also stays on without power as seen at the end. I followed the original wiring guide and I'm pretty sure I got it co…

I have contacted waveshare support and after a few round trips it turned out that their connection diagram was wrong. :ok_hand: On top of that, the library they use has changed default pin configurations as well. For anyone with the same problem, you must use the version on Github instead of the w…

LED Matrix glitchy pixels and it stays on after unplugging

Other Hardware LEDs and Multiplexing

b707 August 27, 2025, 2:21pm 18

Yes, its mandatory for panels > 32 pixels high.
And its clearly stated in the library README

Added:
Moreover, pay attention to the comment in your own code:

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LED Matrix glitchy pixels and it stays on after unplugging

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