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Yeh we just hard coded it to a 4 cyl tach signal cos thats what i have. We will have it programmable for any type of sender. Right now we have the rpm reading very accurately. 100.6hz produced 3004rpm reading. the issue with duty cycle was my fault. the sig gen varied the frequency as well as the duty. Tested now with 50/50 and all the way to 25/75 duty with no error.
in the short term i'm aiming for motor overspeed protection and rpm readout via rtd. Hopefully get a cruise control and idle function for an automatic in the future. Any other ideas??
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Now, Cole, when you shift the gear and that little needle on the ammeter goes into the red and reads 2000 Amps, that's bad.
www.evbmw.com
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