Hi I just wanted to add some info about DMX stuff. I was trying to set up an arduino as a DMX receiver device using the DMXSerial library and output colours on the LED strip using FastSPI_LED2. First of all I had problems compiling with both libraries, and it turned out to be due to FastSPI_LED2’s dmx.h trying to extend DMXSerial but with conflicting types. The solution in this case was to merely move the DMXSerial import to below FastSPI! Facepalm.
The second thing is that it didn’t work with these leds - I think the DMX data was being updated so frequently that it was interrupting the WS2811 refresh cycle, leading to wrong, flashing colours. I ended up using a simple non-programmable strip instead.