The drum works fine standalone, but I'm connecting to a Focusrite Scarlett 18i8 audio interface. It works OK for about 30 seconds and then crashes - all the lights on the UNO come on. I've tried different ports, but no difference it still crashes. And there's nothing in the 18i8 settings that look helpful.
I'm sure I connected a few days back and it worked OK, but I did also run through a UA Volt4 and worked OK. So might be getting confused with that. And don't have the Volt4 anymore to re-try it.
