I've got some bare PS2 gamepad PCBs with just the encoder on it, and a cable to the console. No motors, and no analogue thumbsticks: http://126.96.36.199/arcade/ozhadou/sf007.jpg When plugging these into a PS2, the console won't boot. I can plug a genuine Sony pad in, boot from that, then plug one of these PCBs in later and the system detects it fine, however the inputs from the non-existent analogue parts are pretty haywire. It seems that 0V returning from these parts puts my left analogue stick into full-bore up-left, and all sorts of weird results get returned from the right one. Does anyone know how these work? I assume I need to throw some pots on the X/Y axes to simulate an existing thumbstick. I've experimented a little but haven't had much luck getting a consistent result. I've got another dual-shock pad that I've measured which reported 2K ohm on the thumbsticks, but silly me measured these on the device which obviously gave me incorrect results. Buying some 2K vertical trimpots and adding them to my controller PCB gave me a reading of 1K when they were in-circuit. Anyways, if someone can shed some light on this, I'd be greatful. I'm kind of stumbling in the dark here, but if anyone knows some specifics please share. Eventually if I can find the exact value I need, I'd like to throw permanent resistors in to give me the "neutral" values of the stick. I only need the pad to work in digital mode when it's done (for simple fighting games), so I just want the analogue parts to be on (so the console can boot without having a cow), but not in use.