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Topic: Arduino frequency counter (Read 11222 times) previous topic - next topic


Jan 10, 2011, 04:52 pm Last Edit: Jan 10, 2011, 04:54 pm by ilewy Reason: 1
Hi i found library for frequency counter:


But it use 3 pin in. I need someone who help me rewrite this library to use with this comparator:

And it is not the end i need to count 2 frequency. I have 2 comparator and need to read 2 frequency.

Sorry, for my poor english.

Please help me at forum or e-mail: ilewy.mac@gmail.com


Please help me I realy need it.  :-[



What country are you from? If you update that in your profile people may help in your native language.

I have no experience with this freq counter class, buton the page there is a reference to an earlier fequency library - http://interface.khm.de/index.php/lab/experiments/arduino-frequency-counter-library/ - that is maybe simpler to use with your schema. There is also the email of the original author, maybe he is able to help.

hopes this gets you started,

Rob Tillaart

Nederlandse sectie - http://arduino.cc/forum/index.php/board,77.0.html -
(Please do not PM for private consultancy)


I'm from Poland. I write to author of this libraries and he won't help me :/


What frequency range are we talking about?


Rob Gray aka the GRAYnomad www.robgray.com


It looks like you don't plan to use the internal analog comparator like the library that you reference since you already have an external one.

Also it looks like you plan to just use 2 pins and I assume 2 counters for this.

Is my understanding correct?

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