I think I'm missing something. I'm trying to display the speed of a slow moving drum using pulsefrequency but am getting very strange results. By strange, I mean unuseable.
T100MD24
pmon 1 in 1st scan.
npn proximity sensor connected to input 3.
The sensor is picking up the teeth on a gear which has 39 teeth and ranges from 1 to 15 RPM.
The results I get from pulse frequency go from 500 to 1600...I would be expecting something closer to 1 at slow speed and as high as 585 at maximum speed.
Any ideas? Pulse width and Pulse period are equally unstable.
Thanks,
Sean