Which Channel the chain you go into is in decides how the instrument chosen plays.

MIDI CC Instrument controls start at 00 - this is instrument 1, so you always need to add +1 to the CC for the relevant instrument.

I got my hands on the arduinoboy of my dreams (thanks yoyz2k!)...

BUT

I am mostly using it in keyboard mode to trigger the DMG from a DAW/Keyboard. It seems to work pretty well once it is has picked up the MIDI signal, but whether it starts picking up signal from the MIDI interface seems to be a bit trial and error. I am not sure I am setting it up correctly -

I tried following this vid: https://www.youtube.com/watch?v=qeRKhU0vp3c

which is about a PS2 keyboard rather than MIDI keyboard/DAW

From this I *think* you need to be inside an empty chain to start triggering the DMG with  MIDI - but does it matter which channel (Pulse/Wav/Noise) that chain is created in when choosing an instrument by MIDI CC? Or where you are when you press play in a DAW/Start playing notes?
I seem to be getting some different results here and I can't really work out what I might be doing wrong....
Does Live/Song mode make a difference to triggering via MIDI? should the DMG be in one or the other

I managed to make it sound like a malfunctioning monster robot for a bit, which is what I was after, but any assistance with making the results a bit less random gratefully received (or a link to the same as this seems a bit thin on the ground!)