I recently bought an pre-built Arduinoboy from a guy on the interwebs.

I can't get it to work.

I've made all the connections correctly and I believe I have everything set up right as far as the gameboy's sync options and the arduino's mode.

I set the gameboy to MIDI OUT and the arduino as well.

I'm using N commands with different variables. So far, none of my midi capable instruments are responding to the damn thing.

So what's the dealio?

I know all my midi cables work and I tested my instruments by sending them midi from other instruments.