One step forwards, two steps back. I was doing great on v0.3 when I accidentally connected the power the wrong way round to my little 0.96" 128x64 OLED display and it went pop in a little poof of smoke 
Have switched to using larger 16x2 character LCD display and hooked up a button matrix, so now I've got boot-up status messages and manual sound selection and triggering.
Have switched to using larger 16x2 character LCD display and hooked up a button matrix, so now I've got boot-up status messages and manual sound selection and triggering.