I am just getting my Pi powered arcade cabinet up and running, but have run into a snag with the U-Trak trackball. Everything is running through a Ipac 2, with all the other buttons and joysticks operational, but I'm not getting any response from the trackball. I did notice that only one of the connectors has a ground wire, but I'm assuming that I'd at least have one directional response.
Does anyone know if there is additional setup required in RetroPie before it recognizes the U-Trak? I did attempt to change the controls in Centipede, but it wasn't even registering the input. Any help would be appreciated!