At 01:39 PM 7/22/01 -0400, you wrote:

>(BTW, there was a suggestion on the [EE] thread to ignore the 1->0
>transition on the A channel. Be aware that doing so will reduce your
>resolution by half. Since you are ignoring B channel transitions and using
>it as only a direction bit, you have already reduced your  available
>resolution by half. Depending on your application, this may or may not be a
>problem.)

I don't think there is much percentage in double-counting between detents!

What I usually do is set up a state machine which ignores repeated transitions
on either input. You have to sample relatively fast, because the motion is
not smooth, it "jumps" between detents, and if you look at the specs for
the phase difference on a typical encoder it is not guaranteed to be
very large...

Best regards,

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