Quantity   Component name
1 × Arduino Mega Microcontroler
1 × Stepper motor dirver custom made
1 × guitar string
1 × tuning peg Connectors and Accessories / Board-to-Board and Card Edge Connectors
1 × bridge wooden, custom made
1 × Inkjet printer (carriage system) Stepper motor, pulleys, carriage cart
2 × Limit switch mechanical or optical, for detecting when the carriage reaches the limit
2 × coils (for electromagnetic actuator) salvaged from 12 v relays
1 × OpAmp for electromagnetic actuator
1 × camera Logitech 920
1 × C++ Application (OpenFrameworks) Motion detection algorithm + stepper motor driving program
1 × sound box made with cigar box
1 × guitar slide