Quantity   Component name
1 × Teensy 3.2 development board https://www.pjrc.com/store/teensy32.html
5 × Guitar foot switch SPST non-latching push-to-make switch. Normally open.
1 × LED Fiber Optics / Emitters
2 × 8x8 LED matrix MAX7219 dot LED matrix MCU display control module.
1 × USB 2.0 panel mount cable Female B socket -> Micro B 5-pin male.
1 × Case