I think it would be handy if you stopped using the brand name neopixel on your project openpinballproj as it seems to imply that ONLY adafruit's neopixels are supported, and kinda goes counter to the "open" part of your name in my mind. Now if that is the case (I hope not/don't know why it would be) then I retract my suggestion. Avoids questions like this.
Quoted from MOSFET:NeoPixels are the usual WS2812B addressable RGB LEDs, right?
From adafruit site:
“NeoPixel” is Adafruit’s brand for individually-addressable RGB color pixels and strips based on the WS2812, WS2811 and SK6812 LED/drivers, using a single-wire control protocol.
cobra18t cool project, I'm enjoying following along. Hope to get back on my project sometime, and really liking the new developments.