Quantity   Component name
1 × Arduino UNO R3 with 16u2 chip
6 × SPDT metallic momentary switches (LIKE THE GUITAR'S PEDALS SWITCHES)
3 × 7 segment display - common cathode
1 × max7219
1 × Artesanal one piece wood carved enclouser
1 × 10 k linear Potentiometer
1 × red led
1 × green led
1 × Prototyping arduino UNO board
1 × 6.35mm FEMALE JACK CONNECTOR STEREO
1 × Mini Micro Momentary Tactile Tact Switch Push Button DIP P4