Quantity   Component name
1 × Arduino pro micro 5V
32 × 10k potentiometer Rv9 type
2 × 74hc4067 with breakout board 16 channels multiplexer breakout
1 × 7-segment display with 2 digits 0.36 inch cathode
1 × MAX7219 Interface and IO ICs / Display Interface
2 × Tactile switch buttons
2 × TRRS 3.5 mm jack (TRS should work as well)
1 × 0.1uF capacitor
1 × 10uF capacitor
4 × 220 ohm resistor
1 × 10K ohm resistor
1 × 4.7K ohm resistor
1 × Diode 1N914