Got an arduino to act as a USB to TTL serial interface. Was able to trigger the tracks and everything from serial. To use an arduino to connect up to the wav trigger via serial, you just load up no code or connect RST to GND. That effectively makes the arduino a USB to TTL serial interface. Then you just hook up the wav trigger’s GND, 5v, TX, RX to the arduino’s. Note, unlike a normal connection where you would connect RX to TX and vise versa, you connect RX to RX and TX to TX in this scenario.
PICS:
I got it to flash. The trick was to follow instructions and not ignore the IMMEDIATELY portion.
First step was to update the firmware, and thats finished.
Note to self, it would also be cool to try and get CV-able CPU mod to get pitch shifts.