> I have a customer that wants a scroll wheel as part of the user interface.
> I could buy an encoder, try to find an appropriate knob, mount it at a
> right angle to my board, and spend maybe 10 times the cost of a mouse with
> a scroll wheel in it. So, where do you buy a scroll wheel WITHOUT a mouse?

The Powermate from Griffin Technology for $45.  It's a machined
aluminum knob on a round base; 1.3"/33mm tall x 2.1"/54mm diameter.
USB interface with drivers for Mac & PC.  Comes in natural aluminum
or black finish.  It's aimed as a very nice volume control (like on
high end stereo).  Besides rotation, knob has a push switch (mute).

See http://www.griffintechnology.com/products/powermate/index.php .

A friend of mine has one.  Very nice finish & feel.  He was using
it for Griffin's primary design as a music volume control.

						Lee Jones

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