To complete the double computing system see also the DOUBLE MOUSE tutorial.
Step 1: MATERIALS / PARTS LIST
Vendor: Radio Shack
Cost: $14.99 or less
Notes: You only really need one keyboard but you need two serial cables. I ended up just buying an extra keyvoard because at RadioShack they are cheaper then a serial cable. Any old keyboard will do, both USB or PS/2 will work, check ebay.com. This example uses a USB keyboard, PS/2 keyboards will also work see the DOUBLE MOUSE post.
Part: QVS USB-PS2Y USB to Dual PS/2 "Y" Converter
Notes: You are going to need two of these. There are cheaper options but this is the only one that I know works for sure.
Part: Duct tape
Vendor: Any will do.
Tools: A sharp Xacto blade and/or wire cutters.
Step 2: CUT CABLES
- Cut one keyboard cable at the midpoint.
- Cut the second keyboard cable an inch or so away from the keyboard. This keyboard is no longer needed, hide it in a drawer for later use.
- You should now be left with one longer serial cable, one shorter serial cable, and one keyboard. Cut away 1.25" of the outer cable from the ends of all three cables.
Step 3: EXPOSE WIRES
Step 4: TWIST AND TAPE
Yes, I know taping the connections is totally ghetto. I have since bought a soldering iron, but I will also say that this taped version has been working for over a year and half, and has survived several moves. LONG LIVE SOLDER FREE DIY!