Code for the drivers station.  Probably just arduino code since that's
what we tend to prefer; but if the operator panel controller changes
there might be some other code working its way in here.

Useful Arduino Links:

https://www.arduino.cc/en/Guide/Libraries
http://www.instructables.com/id/Arduino-LeonardoMicro-as-Game-ControllerJoystick/
https://github.com/MHeironimus/ArduinoJoystickLibrary/tree/version-2.0