It looks like the FX board can be controlled in either trigger mode or serial mode. If you use trigger mode it looks like all you have to do is hook up the trigger pin to the nano on pin "soundEffect" along with GND and your code should work.
It looks like the FX board can be controlled in either trigger mode or serial mode. If you use trigger mode it looks like all you have to do is hook up the trigger pin to the nano on pin "soundEffect" along with GND and your code should work.