Matrix Keyboard BOM
1 off RC2014 KEYBOARD PCB
1 off 8 pin RA header
1 off 5 pin RA header
40 off Tactile Switch
8 off 1N4148

Serial Keyboard BOM
1 off RC2014 KEYBOARD PCB
1 off 6 pin RA header
1 off 28 pin narrow DIL socket
1 off ATMEGA328
1 off 16Mhz Xtal
2 off 22pf ceramic cap
1 off 10k Resistor
1 off 100nf capacitor
41 off Tactile Switch
8 off 1N4148

USB Keyboard BOM
1 off RC2014 KEYBOARD PCB
1 off 24 pin wide socket to Pro Mini adapter
1 off Arduino Pro Mini
1 off 10k Resistor
1 off 100nf capacitor
41 off Tactile Switch
8 off 1N4148