Wagner,

You mention

(snip)
>A debouncing routine is easier to do for optical devices.   (snip)

What would cause bounce in the kind of setup described in this thread?  I
currently have a test bench running at 30 rpm/50 spokes per revolution and I
don't believe that bounce comes into it (not yet, anyway). I would be
interested in the kind of situation that would cause it - if nothing more
than to know it when I see it.

Dan