> When using a stepper to control an indicator pointer - how
> are you handling any missed steps? Wouldn't there be a danger
> of creating an offset at some time?
>
>  Richard
>
No.. I just proposed using a moving coil with optical feedback.
The optical feedback is digital but very fine. I cant remember the
resolution off hand but its something like 200..256 over a 100deg arc.
I was using an 8 bit d/a but am going up to 12 bit with interpolation
software.
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Lance Allen
Technical Officer
Uni of Auckland
Psych Dept
New Zealand
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