I'm working on a project and it involves a working connection between a Mayflash GC controller adapter connected to an Arduino via a GC extension cable. The adapter is supposed to receive GC input bytes via the Arduino's AnalogWrite command. I used http://www.int03.co.uk/crema/hardware/gamecube/gc-control.htm as a reference for constructing the bytes needed to communicate. I spliced the GC extension cable and connected only the data line to the Arduino pin and used a pull-up resistor setup with a 10K ohm resistor. My original expectation was that SSB4 would recognize the bytes sent from the Arduino to the GC adapter; however, the GC adapter did not light up like it usually did and nothing happened in SSB4. I'm at a loss since it wouldn't make sense to connect any of the other parts of the GC extension cable to the Arduino since the Arduino already has its power supply from my PC. The only thing needed is data, but the adapter is not recognizing a controller.