At 04:56 PM 21/11/2012, you wrote:
>A 4 stroke/4 cyl engine has 2 ignition pulses per 1 crankshaft revolution.
>If this is so then whats the technique behind counting RPM with a PIC. I
>need some ideas only. Please don't discuss HW or other.
>
>I've gone as far as thinking the RPM will have to be fed to a CCP pin as
>input. I understand how the CCP will be setup but can't quite get the idea
>of how exactly to count RPM and say if that's sorted out, display it (this
>part is not a concern right now).
>
>Any ideas would be great.

Well, if it's two pulses per revolution and you want to know the
RPM, you could count the number of pulses that arrive in 3 seconds
and multiply by 10.

Best regards,
--sp =20

--=20
http://www.piclist.com PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.