Convert a NES gamepad to USB with Arduino

Step 11 Construction: USB cable (nearly done)

Take the wires that lead from the pull up resistor (1k5) and one of the 68 ohm resistors that ultimately ends up on the mega's pin 6, and pigtail them together.

Also take the wire lead from mega pin 4 then strip and twist its end

Next take your diodes, and pigtail their cathodes (end with the stripe on it) to the other wires

Find the D- line in your usb cable, Mine was brown ... anyway do a inline splice with the pigtail that contains 2 wires and the diode, then solder together and wrap in tape, take the D+ line and splice it with the other wire that is coming off of the mega's pin 4 and the diode, solder them all together and wrap with tape

You should have the other leads of the diodes still sticking out, choose whichever one looks longer and solder it to the lead of the capacitor that is connected to ground (the other side would be connected to the crystal), then solder the other diode lead to the first diode lead so they are both connected to ground

Then solder the ground lead from the usb cable to one of the leads connected to ground