There's an on/off switch on the rear that controls all power to the Arduino and auxilliary components. Numbers are input by using the rotary dial, you can only enter a max of 4 digits and then the ...

All the other elements are momentary or latching switches/buttons/levers. To increase the interface flexibility, two analog joysticks are actually supported which means four analog axis in total.

An Arduino Pro Micro provides a USB interface to a PC and reads out the various input units. The entire design is modular, so it can be customized to any desired combination of analog and digital ...