Quote Originally Posted by danielhr77 View Post
I have a few brushless R/C trucks, they have an optic sensor on the transmission and I would like to read the RPM. They go up to 50.000 RPM! I'll give it a try.
Cool, keep us posted, I am curious as to the limits of count. I am thinking the variable might overflow if RPM goes too high, and you might have to alter the sampling rate or use some form of prescaler.