I have often thought of using a stepper motor for
such a switch.  The magnets give a good detent
action and if you amplified the output on the
input coils, would you get a pulse?

And thinking of a car radio, a small joy stick
could skew the frequency as well as adjust volume.
The switch on joystick could put the current
station in memory if held down for a long period,
and a short press could advance to next station in
memory.

Could Velcro joystick on your knee for ease of
use.

Bill
----- Original Message -----
From: "Quentin" <qsc@IPTECH.CO.ZA>
To: <PICLIST@MITVMA.MIT.EDU>
Sent: Wednesday, April 30, 2003 9:27 AM
Subject: [EE]: Rotary dial


> I am looking for a panel mounted rotary dial or
switch. Like the kind
> you see on car radios. Turn it one way and it
counts up, otherway and it
> counts down. Same way an encoder works. I tried
to search but I think
> the lack of the right description lets me down.
>
>  Quentin
>
> --
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