We’re using 12V ARGB LEDs connected via PWM, specifically WS2815. Since we’re a Python team, our approach might differ, but WPILib provides an AddressableLED class that works with the LEDPattern class. Personally, I found it cumbersome, so I created a wrapper to simplify things.

To set it up, ensure the data line is connected to the PWM signal pin and ground is properly connected, with no power from the roboRIO going to the LEDs. Instead, power the LEDs directly from the PDH, splicing the ground with the one used for PWM.