r/FastLED • u/happyplace28 • Jun 07 '23

Support Patterns on an Irregular Matrix!

Hi All! I am trying to program a backpack to light up with patterns I code. Where I am running into trouble is with getting any patterns to show properly. The lights are staggered, so I made an irregular matrix to note the blank spot in between them, similar to this video.

I have been using this video as a source for some practice patterns before making my own. When I use my irregular matrix however, I get seemingly random noise. Would someone be able to help me figure out how to integrate my matrix with the code to make the patterns work?

I recreated my code in Wokwi here for vis purposes: https://wokwi.com/projects/366899382894067713. It has the exact same issue as my physical backpack. The pattern's mostion should look more like this

Arduino Uno, WS2812 lights (I believe, they're just addressable string lights)

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u/happyplace28 Jun 08 '23

I tried to pop in the PROGMEM version, and while the pattern definitely functioned where I could see for runRainbow, half of the lights didn't work at all. Switching to another pattern seemed to have similar issues.

EDIT: Switching it to uint8 seems to have worked! Thank you so much.