It shouldn't be necessary to count pulses to determine frequency, RPM or speed; that can be calculated from the total of a high and low period.
For example a 1ms pulse with 19 ms to the next gives a period of 20ms, which is 50Hz which represents some RPM and speed when multiplied by whatever the fudge factors are.
Generating pulses is, as they say in the best Haynes Manuals, the reverse of the above.
Counting pulses requires some time period which always adds latency. Timing just a high and low period minimises that.
For example a 1ms pulse with 19 ms to the next gives a period of 20ms, which is 50Hz which represents some RPM and speed when multiplied by whatever the fudge factors are.
Generating pulses is, as they say in the best Haynes Manuals, the reverse of the above.
Counting pulses requires some time period which always adds latency. Timing just a high and low period minimises that.
Statistics: Posted by hippy — Sun Aug 31, 2025 4:01 pm