Taken from the repo:
This is a silly board that does RGB lights. It's absurdly simple, so I didn't spend much any time on documentation. If you want all of the good info, go to Blamm!'s Disco on a Stick documentation. He actually did the work. I am just copying what he did and putting it in the shape of a Voron logo.
The only thing you need to know is that they use the WS2812B-V5/W LEDs.