[oopic] Re: Incremental Encoder and oQEncoder

--- In oopic@yahoogroups.com, "savaspiperidis" <savas@...> wrote:
>
> Hello.
> I want to use an incremental encoder with 2 channel quadrature TTL
> squarewave outputs. The resolution of the Encoder is 1024 cycles per
> revolution. Should this encoder work with the QEncoder object or will I
> have any problems with the frequency of OOPic?
> Thank you.
>

It depends on the RPM...

You can search the archives here for 'quadrature' and if you look back
far enough you will see where someone found that 4 kHz was about the
limit when there were no other objects to evaluate. But, you have at
least 2 objects so the 4 kHz number will be somewhat reduced. Maybe 2
kHz each.

You can use a PAK VII to do the counting but it might be considered
'awkward' http://www.awce.com/pak7.htm

In another forum we were discussing the idea of using a CPLD to do the
counting and interfacing with the CPU over SPI. Not too difficult...

Richard

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