krypton_john
Senior Member
Hi All,
Just wondering what is a recommended approach to determining RPM. Assuming I get a logic level pulse per revolution, and the revs could be up to say 8,000rpm, what's a robust approach to timing them? In particular, I'm interested in getting more than one concurrently - in this case, a helicopter's engine RPM (around 2500) and rotor rpm (around 500rpm).
I guess you could count them over a 0.25 second period and display a 0.5 second rolling average?
Any suggestions?
TIA,
JohnO
Just wondering what is a recommended approach to determining RPM. Assuming I get a logic level pulse per revolution, and the revs could be up to say 8,000rpm, what's a robust approach to timing them? In particular, I'm interested in getting more than one concurrently - in this case, a helicopter's engine RPM (around 2500) and rotor rpm (around 500rpm).
I guess you could count them over a 0.25 second period and display a 0.5 second rolling average?
Any suggestions?
TIA,
JohnO