As an example, he uses a joystick to send data for X and ... the process of scaling up from the 4 servo demo to 12 servos on a standard Arduino. Sounds like it might be time to build your own ...

In one of his demo videos you can see him using the joystick to add an effect. An Arduino Micro acts as the primary controller and transmits the musical notes as MIDI commands. [Gr4yhound] is ...