additionnal counter?

[Lepterois]

Hi! great project!
I'm going to make one for my bike!
Do you think, is it possible to add an rpm counter for the engine?
Thanks to reply!

[mattogodoy]

Hi!
Sure, it is possible, but for that you should have a way to measure every revolution. Most people makes it using the spark plug as a way to count. For instance: https://kokoraskostas.blogspot.com.es/2013/12/arduino-inductive-spark-plug-sensor.html

Good luck!

[Lepterois]

Thanks for the reply!
Is it possible to use the original wires of the rpm meter?

[mattogodoy]

Well, that might be possible but I am not sure how to do it. Maybe every bike brand has a different signal for that, or is it universal?
Sorry, I don't know :)

[Lepterois]

I don't know at all. I'm completely newbie ;-)
What I know, normally it's a pulse from the engine sensor, but I think the voltage may varies from the different models of bikes?