i took a lot of time and work but finally here it is!
DART ONE Speciale is a MIDI / DMX / HID controller based on Arduino Leonardo boards, it has an optical TOP SPINNER that can be used as a Jog wheel, like in any DJ console, but it can also emulate traditional (non- endless) controls, like a pitch-bend wheel or a common potentiometer.
some other features:
SIDE SPINNER
DISTANCE SENSOR
ULTRAGLIDE (scratch-proof!!) FADERS
DMX output for direct lightcontrol or MIDI to DMX conversion!