RPM

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i'm looking using arduino monitor rpm.

the system counts sparks, outputs high voltage 100v.

i made circuit bring down voltage , protect arduino optocoupler.

i'm new , use coding, there counter signals info in attachments.

thanks

quote from: jasonboyd on dec 02, 2017, 09:29 pm
i'm looking using arduino monitor rpm.

the system counts sparks, outputs high voltage 100v.

i made circuit bring down voltage , protect arduino optocoupler.

i'm new , use coding, there counter signals info in attachments.

thanks


how many sparks per revolution


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