Quantity   Component name
56 × Tactile switch chose color and heigh as you want ;)
1 × Atsamd21e18 main controller, arduino zero compatible
1 × mcp1700 Power Management ICs / Linear Voltage Regulators and LDOs
1 × micro USB connector
2 × LED Fiber Optics / Emitters
2 × 100n Non-IC RF, IF, RFID, ZigBee Components / Attenuators