He wanted each bulb to be independently addressable, so he only used
the blue line of the RGB controller, which leaves two outputs empty. I’m
sure you can figure out something to do with them.
Needless to say, we’ve seen a lot of WS2812 hacks here. It’s hard to
pick a favorite. [Mike] of “mike’s electric stuff” fame built what may
be the largest installation we’ve seen, and this hack that effectively projection-maps onto a randomly placed string of WS2812s is pretty cool. But honestly, no project that blinks or glows can go far wrong, right?
Using WS2811 Chip to Drive Incandescent Lamps | Hackaday