Hello, posting a demo showing control of so-called 5050 RGBW LED strips. Here is the video and sorry for the extremely low production values :
In the demo, Score is running, for the moment, on a laptop rather than the Pi itself (see my other post here) and the Pi is present in Score as a device with container children for each LED strip that you wish to control. Each of these containers has children controlling the red, green, blue and white LEDs as well as a scaling factor.
The circuit used is from here: https://dordnung.de/raspberrypi-ledstrip/
The actual strip used is this one:
The modified version of oscdump running on the Pi is developed from this source:
All the best,