Arduino Tutorial: Tachometer (RPM Counter)

Making a tachometer with arduino has never been so easy. I am not only going to show how you can make your own, but also will mention the pros and cons of a few types of RPM sensors, mainly the IR proximity sensor and the hall effect sensor.

Arduino sketches:

Components:

Recommended Tools:

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[leonardocardoso]

Thanks for sharing, that is exactly what I've looking for. This is the best video about arduino tachometers I found on youtube.

[vantalane]

One of the cleanest code and greatest outputs I've seen so far. SUBBED!

[magwitch]

Wow very interesting, I'd never considered measuring the time between pulses over number of pulses per time period before. Thanks for including links to your hard work, much appreciated from the UK.

[EdwinHwuHacksScience]

Best RPM sensing video! Can't thank you more!!!

[randywetzler]

Thanks for sharing! I was working with a hall effect sensor today and was frustrated by the inaccuracies and refresh rates. I will have to try your code.

[ElectricCruiser]

Thanks for the video! Helped me understand a few things about a hall sensor tach I bought for my old boat. Cheers!

[benyaminnorouzi]

the Video is very very good and that is exactly what I've looking for. This is the best video about arduino tachometers...

[zzzxhrg]

SO great. This video is SO great. I'm in a project right now just that requires just this (except my output must be directed to an analog 0-10V pin). You just saved me an ETERNITY of trial and error. GREAT job, kudos!!!!

[alainaubry]

Very nice project and well documented. Thanks a lot!

[Rattlegunner]

Thanks so much for this awesome video and code. It's really well put together and the code is very well documented/commented. I'm really new to coding and Arduino, and just by reading your code and comments (and a lot of furious googling) I have learned so much. You have probably saved me months of work. Cheers.

[msmmaze]

Many thanks for the video. This was a real life saver for me. Keep up the good job bro.

[bagoes]

after 2 days search in google, finally, this is what i want. THANK YOU...

[samwalter]

Really good set-up mate love your work

[averaldo_]

Oh man thank you AGAIN. I've past the last 2 days trying to figure out why my tachometer wasn't working. Tried the number of pulses per time interval but had no success. But now you gave me a new way to look at the problem and it seems so much better! Thank you very much, I'll probably be able to retrofit my '69 car gauges with a more accurate one! :)

[nakamuraandy]

Hi @InterlinkKnight by far your tutorial is the best video about RPM meter/tachometer with Arduino (DIY). Thank you very much!!!

[kronosg]

Nice project as always. I was actually looking for a smoothing code. Cool!

[fatchickencatcher]

Hi, fantastic stuff. Really helped me out.
Your code comment " CurrentMicros should always be higher than LastTimeWeMeasured, but in rare occasions that's not true."
Arduino documentation: "micros() This number will overflow (go back to zero), after approximately 70 minutes."
Hope this helps.

[McPcholkin]

Thanks for your examples, it perfect for my project.

[ramkumarshanmugasundaram]

This was the one the tachometer in arduino was searching Thankyou so much 🙏🏻🙏🏻🙏🏻🙏🏻

[leeharrington]

Great work (as always) many thanks for sharing.