Frequency Counter using Arduino Timers

[@postiemania]

This is a great project and will run on an Arduino Nano or even a pro mini. The code is well written and commented and available for download. I recommend this project for beginners as it is a good example of how to write and comment your code. I ran this code to compare to something similar I did using the 32768Hz output from a DS3231 RTC. Well presented Anas.

[@AnasKuzechie]

Thanks

[@ericgorder1]

This is so well presented and useful! Thanks very much!

[@AnasKuzechie]

Thank you

[@marcosgiovanni9682]

Anas very good, of the continuity to the videos of Websocket.

[@minastaros]

why do you put setup code into the loop()? That's where setup() is made for. And the loop() repeats itself, so no need for the loop inside. That would be a simple if().

[@incxxxx]

Very nice!

[@AnasKuzechie]

Thanks

[@samshurp4518]

What is the max frequency it can measure, and what is the resolution of the frequency measurement?

[@sdgreen4580]

I need to input a sign wave to display RPM. Will this design trigger accurately with a sign wave?

[@ViruteVentura]

Sir i need to write a code for arduino that calculates the frequency of a vpulse with timer 1 using counter mode only on pin2 of the arduino without resorting the interrupt service. Can you help me with such a code..

[@verarschn]

Thanks for the video! i'm using an additional frequency source but i having a hard time to track both frequency Inputs! Could you give me a hint how to attach an additional clock/timer/measurement for the secound frequency source?

[@AnasKuzechie]

Hi. It's not possible with ATmega328 (Uno/Nano), since it has only one 16-bit timer (Timer 1) that supports external clock input. Consider using Arduino Mega, which has 4 16-bit timers.

[@mertyasinaycicek7656]

Thanks for the video great project but I have a question.What is the error rate of the counter?

[@AnasKuzechie]

Hi, thanks for your feedback. To be able to calculate the percentage of error of Arduino-based frequency counter, we need to compare it with an actual device, which I don't have.

[@incxxxx]

Why it does not count frequency higher than 7 MHz ??? Do you have any notion what is the reason? Theoretically there's no reason, signal, fx of 9MHz is OK, Timer1overflowCounts is less then 200, so what?

[@michaeljoshuamanallo1742]

bro what is the max frequency that it can count please answer 🙏🙏

[@AnasKuzechie]

Hi. I did not measure the maximum frequency since it depends on prescaler used for Timer 1. You can watch my other video on frequency measurement via Timer 1, where I use another technique: kzbin.info/www/bejne/nKKXo4GHbZmem8U