1. One of the following boards:
  2. USB cable to connect the Teensy to your computer
  3. Make you own RetroSpy Xbox 9000 cable using the instructions under Wiring.
    • Wires to solder into the controller extension cable to go to the Arduino, like these
    • Wire cutters/strippers
    • Soldering iron and solder
    • Electrical tape and/or heat shrink tubing
    • Digital multimeter or a cheap continuity tester