I am pretty sure I did control the Led Shim from a Pico in PiZero Shape. My code is in Adafruit repo: https://github.com/adafruit/Adafruit_CircuitPython_IS31FL3731/blob/main/examples/is31fl3731_ledshim_rainbow.py
... actually I did not find an evidence of that, I controlled the LedShim from a...