Quantity   Component name
1 × Raspberry Pi 3 A+
1 × 40 Position Rectangular Socket Connector IDC Gold - https://www.digikey.com/en/products/detail/cnc-tech/3030-40-0102-00/3821472
1 × Flat Ribbon Cable Multiple 40 Conductors 0.050" (1.27mm) Flat Cable 1.00' (304.80mm) https://www.digikey.com/en/products/detail/3m/3302-40-300SF/8256199
1 × Power Barrel Connector Jack 2.10mm ID (0.083"), 5.50mm OD (0.217") Panel Mount https://www.digikey.com/en/products/detail/tensility-international-corp/54-00151/9829987
1 × 5V 2A AC/DC adapter
11 × Pushbutton switch - Blue cap
1 × Pushbutton switch - Red cap
1 × Pushbutton switch - Green cap
1 × Pushbutton switch - Yellow cap
12 × 3mm LED - Red
1 × 4mm plywood sheet
12 × Resistor, 330 Ohm, 1/4W