Re: Nothing's impossible


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Posted by Brian Deuel on July 19, 1999 at 23:15:58:

In Reply to: Nothing's impossible posted by TwistyGrip on July 19, 1999 at 22:01:33:

: Nothing's impossible, but what you're asking for is a tall order. You're looking for a conversion board that would take a potentiometer signal and convert it to a serial data stream. I'm pretty good in embedded design and develop microprocessors that could read a pot using an A/D channel and output it as a single-wire bit stream like a mouse does. But we're talking *custom design* for something that has little mass market appeal. What makes the existence of a "pot-to-optical quadrature" converter very unlikely is that all mice run off of negative 5 volts. Most chips are positive 5.

: Leaving the technical stuff behind, I did notice that Omega Race can be configured to rotate using a joystick. You may just want to attach your potentiometers to the *GAME PORT* and possibly get Pong, Warlords, Breakout, and Omega Race to work.

Ahh... I understand now. I really wasn't thinking too much about the A/D channel stuff, and figured it would be a simple circuit. The gameport idea is a good one, though, and I'll probably do some experimentation with this one. That would leave the mouse port open for a large trackball.

Thanks for the explanation.


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