Two years ago I made a throttle control from some old meccano and some other parts my dad had lying around. I connected it to the game-port. The only pro was that when I bought a laptop it didn't have a game-port so I couldn't use it anymore, until I bought a usb to gameport converter.
Here is a picture of the thing.

The most interesting part. The gears to connect lever and the pot

I added this pot because a game-port device must have at least two axis to work in windows.

My USB to game-port converter.


To be sure of hitting the target, shoot first and, whatever you hit, call it the target.
There's no sense in being precise when you don't even know what you