"Jo" wrote:
In ,
Steve Taylor typed:

Why don't you close the loop and have proper position feedback ?

I was working with whatever bits and pieces were to hand. Any suggestions on
how to provide a positional feedback loop with typical junkbox items would
be cool. Come to think of it....there is a component in the VCR that *may*
be a linear position sensor..possibly for mechanically detecting how much
tape was remaining on a reel during fast rewind. Not sure of the resolution,
though. Any other ideas?

An optical mouse can work on a variety of surfaces to a resolution of
a few hundredths of an inch. They work over USB. Which is designed to
share nicely. It's not absolute positioning and I don't know how
accurate they are over an inch or so, but it is junkbox. Well, it is
as soon as you treat yourself to a new mouse


Tim
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