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mcs51mc said:Two major possibilities:
1) Measure the time your input is high.
2) Count the number of pulses from a high frequency signal (eg. 4MHz) while your input is high.
Which method to use depends on your requirements.
Absolutely, that's what I ment but there was a glitch between my brain (if I have 1) and my fingers (I'm sure I have 10 of them) at that time.eblc1388 said:Another method of rpm measurement is to count the number of incoming pulses in a fixed time interval.
mcs51mc said:Absolutely, that's what I ment but there was a glitch between my brain (if I have 1) and my fingers (I'm sure I have 10 of them) at that time.