>> If you are after revolution counting then ...

> No, I was thinking of an oscillator.

I could see that you were THINKING of an oscillator.
The question (mine anyway) is, what are you trying to achieve?
Looking back at the thread I see it wasn't posed as an application 
question but as a "is this yyy just an xxx" so we seem to have 
wandered into something without every having had a requirement 
specified in any way. (Unlike the more usual threads where the 
trequirement is not specified well).

What is the (technology and possible-solution free) aim of the 
exercise?


        RM


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