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Reply to "Make-and-break circuit with adjustable duration, controlled by a foot switch?"

Ted S posted:

... It's important that the system always produce two complete cycles, so as to return to its original state.  Both of the open periods ("windows") in the secondary circuit are the same length.

Q3. Is there a minimum duration between open periods for the secondary circuit to reliably recognize that there are indeed two distinct cycles?  Example.  Say duration is 1.0 seconds.  You press pedal which starts a secondary cycle.  But you release then pedal in 1.001 seconds.  Obviously I'm simply trying to make a point with these numbers.  But in this case will the secondary circuit be able to distinguish or properly respond to the 0.001 second gap between the two 1.0 second cycles?

Q4. A related question.  Q3 asks about minimum duration between the press and release cycles.  Suppose the pedal is pressed again during the 1.0 second release cycle.  Should the system "queue up" the new press...waiting some TBD minimum duration.  Or, as you kind of discuss, should this pedal press (and subsequent release) be ignored generating no activity since it occurred while a previous press/release combo was still running?

No matter how it's implemented - ebay timer modules, 555 chips, Arduino, whatever - this all goes to the issue of context.  That is, as rkenney suggests, my questions seem nit-picking but necessary in the absence of context.  But I don't mind playing "20 questions"...I'm only up to 4 so far. 

Last edited by stan2004

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