Quantity   Component name
1 × Foot Switch with Front Pivot <a target="_blank" rel="noopener noreferrer" href="https://www.mcmaster.com/#7717k14/=16jgw7m">https://www.mcmaster.com/#7717k14/=16jgw7m</a>
1 × Teensy 2.0
2 × Short wires
2 × Female blade terminals
1 × Sheet of thin rubber Optional, only if you want the pedal to be quieter.