Quantity   Component name
2 × Arduino This will be used to control mechanical arm
1 × Guitar Any acoustic or electric guitar
1 × EEG (electroencephalograph) for detection of brain waves
1 × Electrodes to provide electric contact
2 × Raspberry pi This will be the brain of the system
6 × Rods It can be of any material
1 × PID controller
1 × FL controller
1 × Iron structure This will help in changing guitar frets
1 × Servo motor It depends on how many moving parts are there in your system
6 × Battery 9v To operate arduino.