up to 16 buttons by 4x4 matrix or via button box firmware uploaded to Arduino Nano/Uno up to 24 buttons by 3x8bit shift register chips analog XY H-pattern shifter (configurable to 6 or 8 gears + ...

Manuel Lukas, a student at the University of Applied Science Mainz, and Sascha Lukas, a student at Cologne University of Music, have created a groundbreaking Arduino-powered instrument called the ...