I'm working on a project to make a tachometer that would be capable of reading to about 10K RPM. What would be the best most accurate means of feeding this into the Arduino?
Three options that come to mind are:
photoreflector (ie. like the Fairchild QRB1134)
I have concerns the reed switch would not be able to cycle fast enough for a 10K RPM speed. Of course the other options would be (only) a little bit more complex to implement...
I'm also open to other suggestions.
-- Mr. Swarf Klingon Machinist