Basically I hard wired right to the keyboard.
I have a couple of 36 inch printer extension flat ribbon cables(25 conductor), so I took 1 and cut it about 18 inches from one end. The other piece is hooked to the throttle. This allows me to unplug from the keyboard.
Using an ohm meter I mapped the key presses. I didn't map a few of the keys like "Print Screen" "Scroll Lock" and "Pause". I ended up with about 20 of the 25 wires being used. Now I'm using a Pre-Win95 keyboard, no stinkin windows key here. And it uses switches for each key, not one of the newfangled membrane keyboards. From what info I found on the web, it only takes 24 wires to get every key function on a normal keyboard.
Here's one link that shows this.
http://www.geocities.com/~prohm/Simulation/Config.htm Here's another that shows a simple circuit to run 2 keyboards at the same time.
http://home.t-online.de/home/stephan.hans/tricks.htm There is a company that makes programmable keyboard chips. Instead of rewiring a switch to a different key, you just tell the chip to emulate another key press. Think they had 3 models, $70 to $100. Sorry I don't have the link handy. I wanted this to be a low-buck project, so I didn't pay them much attention.
My whole project cost me less than 50 cents. Had to buy 2 carriage bolts to hold knobs on 2 levers. Sigh, so much for low buck.
If I find my other links I'll post them.
