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

sonofcy August 16, 2025, 11:26pm 6

Yes, a wiring diagram. A photo of a hand drawn is fine.
Glitchy pixels is probably a manufacturing defect. Staying on is possibly residual charge.

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LED Matrix glitchy pixels and it stays on after unplugging

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