Thanks. Now to figure the code, just learning the arduino language. The device is an M5, only has the 2 buttons, so I wanted to setup a few pages of commands, to do presets, tbh, If i preset my presets, that would be most of what's needed. In a pinch, though, I'd like to be able to change effect mode and page up/down to select a not preset one if needed. baby steps I guess.