Quantity   Component name
1 × Particle Photon
4 × CD405xB Multiplexers
1 × 3D-Printed Components
1 × PCB For mating the Photon and Multiplexers
4 × Covered 2-way switches
4 × 2-way switches
9 × 3-way switches
6 × LEDs Electronic Components / Misc. Electronic Components
6 × Resistors for LEDs
1 × 3xAA Battery Holder
16 × M3x7mm screws