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Originally Posted by mechanicalbrain
I have, getting tired of searching for 3d joysticks that use serial instead of USB, decided to build my own 3d joystick and I was wondering if anyone has a recommendation for high quality potentiometers. I'm aware that they become uncalibrated over use and I'm looking for something easy to reset and reasonably reliable. One thing I'm considering is mounting a normal joystick to a swiveling surface and attaching one potentiometer to that.
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You can find high quality single turn pots in at
www.digikey.com,
paying around $10 for a very nice Bourns unit if you want. The most
significant problem for building a joystick is the mechanical lingage.
This is where most of your effort would be focused.
Have you considered buying a USB joystick and then gutting the
electronics? All you would need to do is find one that uses 100K
pots internally, custom wire them to suitable inputs on the OI and
then you would be done. Any centering adjustments could be handled
by putting a lower resistance pot in series. Alternatively, you could
use a switch input to the OI to command the RC to read the pots
and use that value for "center," taking one more adjustment that
can get messed up out of the equation.
Eugene