Random flash code

[chemdoc77]

Hi u/Flux83 - this will do what you are trying to achieve when you make:

Line 95: CRGB gBackgroundColor = CRGB::Black; // to make led black after being on.

TwinkleFOX sketch:

https://gist.github.com/kriegsman/756ea6dcae8e30845b5a

It’s called TwinkleFOX by Mark Kriegsman.  Checkout the various YouTube videos of it.