RGBW Neopixels?

[danesparza]

Just out of curiosity -- I was wondering if any progress has been done on supporting RGBW Neopixels.

I see there are placeholders for the 'W' byte -- but it looks like it's not supported yet. Example:

ledctl/serve.go

Line 314 in 98f2a0b

pa := pixarray.NewPixArray(*pixels, 3, leds) // TODO: White

Also: Any pointers or pitfalls if I'd like to start working on this myself?

[danesparza]

I have submitted this PR to get basic RGBW support working: #3