hello I am using arduino to make an RPM meter to read the pulses off an ordinary intel cpu fan with 3 leads (+,-, rpm signal) I tried using digitalread() and pulsein() but I get fuzzy results. anyone knows how to read those signals reliably? code examples: void loop() { scanvalue=digitalRead(…

arduino RPM meter for laser project

system July 24, 2006, 9:32pm 4

thanks very much!
merci

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