In the tutorial of the title, part 3 there is the following equation to calculate RPM
I don't understand this formula. Can someone explain it to me?
I got the lower part. (Period*7). To complete a total revolution you need 7 pulses so it is clear that the total period for one revolution would be (Period*7).
I guess since we are looking for RPM (minute) we put the 60 seconds in the upper part.
What I dont understand is:
1) Why putting the other part (1/Fosc*4)?
2) If a instruction takes 4 cycles, you would have to divide not multiply by 4, won't you?
Any help greatly appreciated
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