The non mechanical way to do this is with a dual track and hold module that would allow the position of a spring loaded joystick to be saved where it is positioned. having a lag circuit after the track and hold would allow a smooth transition when coming out of the held voltage to the tracked one. I have never seen a locking joystick so that avenue would be a true DIY route.
-James

On Dec 17, 2009, at 9:44 PM, Monroe Eskew wrote:

> It is sometimes desirable to have a joystick snap back to the zero
> position. It is also sometimes desirable for it to stay where it is
> without having to hold it. Can we have both What about a locking
> joystick-- A spring-loaded joystick which also has a mechanical lever
> or knob that can lock the joystick in its current position. Perhaps
> if crafted right it can have variable resistance, so that one setting
> counteracts the springs but still allows the stick to be moved by
> hand, and a tighter setting more solidly locks it in place.
>
>
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