Includes optional human gameplay using a joystick.

Starts in AI mode by default, but once select button is pressed it will start human mode input.
If no button is pressed for 5 mins, it will enter AI mode again.
Left/Right = Move left/right, Up/Down = Rotate, Select = Start game / send piece to bottom.
This is my first time coding for arduino, and I'm still waiting on mine to arrive, so this is completely untested.