Step 10Testing and Troubleshooting
I am assuming that you have an assembled and tested UPCB and button select USB cable for it. This also assumes that you've connected the Xbox360 controller to your computer and gotten it working, either with Microsoft drivers, or the XBCD drivers.
Connect the IDC ribbon cable connector the the Xbox piggyback connector, connect your USB cable to your stick, hold down Fierce and Roundhouse, and plug it into your computer. If all is good, it will show up as an Xbox360 controller, and everything will work right.
This is rare.
Accidents happen. So here is a list of symptoms and the recommended steps to resolve them.
1. Controller shows up, but a button or direction is showing as always pressed: Unplug, replug without holding down the buttons, and see if you see the same behavior from the normal USB operation of the UPCB. If you do, you made a mistake soldering that button/direction and soldered it to ground instead of the right signal wire.
2. Unknown or bad device: If your computer says something is plugged in, but it isn't working, there is probably a short or otherwise bad solder point with one of the four wires soldered where the original USB cable was. Triple check those, and fix any problems.
3. Incorrect buttons: If pressing down throws a punch while hitting Strong makes you duck, you got your wires swapped. Unsolder, swap, and resolder.
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