https://www.youtube.com/watch?v=5VdeOb7PoQc
This repo expects that you have a virtual MIDI bus available (in the examples, it's called VBUS_A). The tutorial uses Ableton's External Instrument, but any DAW or software that can send to a virtual MIDI bus will work.
"Neopixel" is just Adafruit's brand name – any WS2812b LED will work.
Feel free to open an issue with questions or feedback.
- Download the Processing IDE here
- The MIDIBUS library (available via the processing libraries window)