This instructable will guide you through making a computer controlled low voltage device.
What you will need:
1 a old ps/2 or sub keyboard
2 some low voltage relays
3 some wire
1 a nice box/case
2 dip socket
screwdriver which fits in the screws in your keyboard
Step 1: opening the keybord
Take your screwdriver and unscrew all the screws in your keybord. Look under stikers and those little rubber feet for more screws.
open your keybord.
throw away the white plastic sheets but keep the sercet bord