arduino Synth and Beat Machine. Its basicly and arduino with pre-programed synth sounds and a beat sequencer. Each button ha s a diferent sound (arpegios), one of them is a single frequence and the final button starts a sequenced beat. You can then press multiple buttons and combine the synth and the beat. The ultrasound sensor can be used to control the notes and the arpeggios of the synth as well as the beat tempo. It was later conected to a kinect to react with live visuals with Processing.