Hello I am undertaking the vast challenging of creating af single point fuel injection system for my SR500 78'. I may never work, but i have been urging to try it out for at long time. Just for the fun of it at least. Now one of the parameters are the engines rpm. And not only the rpm but also the…

Infrared/laser sample frequency/period - rpm counter

system May 2, 2014, 2:55pm 4

so the maximum reading rate is about 10,000 times a second.

analogWrite() - Arduino Reference