Quantity   Component name
1 × arduino mini pro (or compatible)
1 × joystick board "arduino compatible"
1 × power supply board to convert from 12v to 5 and 3.3 v
1 × HC-06 bluetooth module with serial interface. BONUS.
1 × some wires, screws, glue and black magic
1 × Original SAAB seat controller with broken knob