> Any comments, suggestions, etc., are certainly welcome.  I will keep this
> page up for about 1 or 2 weeks and then take it down.  Thank you all in
> advance.
>
Ignoring  the already suggested problem of "why not an encoder" the
situation is .... as I understand it... that you can derive
say 2 pulses per rev (if that is not too low a resolution) that has
to translate to 1024 per rev. This is a frequency based problem that
can be solved by measuring the frequency of these pulses.
The desired output  frequency is calculated by the PIC using this
measured frequency and youre conversion constants and output the
result to a frequency agile generator.
Using a DDS chip such as Analog Devices AD9851 or... easier..
MIcro Linear ML2036 will be an elegant solution. So a PIC and a DDS
chip, they are cheap and effective.
_____________________________

Lance Allen
Technical Officer
Uni of Auckland
Psych Dept
New Zealand

www.psych.auckland.ac.nz

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