I acknowledge that the code might not be the most readable, but the main issue I'm facing is random flickering on the WS2811 chains when used with a D1 mini. I've tried different D1 minis and WS2811 ...

// SmartMatrixSwirl by Mark Kriegsman https://gist.github.com/kriegsman/5adca44e14ad025e6d3b // https://forum.makerforums.info/t/2-dimensional-blur-this-video-shows ...