9 thoughts on “DIY Frequency meter

  1. It is pretty ugly. And the range is strange: who needs a 500 kHz Frequency Counter? All the commercial ones reach the Gigahertz range. Which sources was this designed for? 33 khz clock crystals? Everything else than a simple waveform requires another solution anyway…

  2. I don’t like to dump on anyone’s personal projects. IMO these are the kinds of projects that you learn from. However, I’d recommend that anyone who would consider building one to act as a lab counter might be better off visiting a swap meet or a tech company garage sale. Besides, a cheap used analog O-scope is pretty handy for checking frequency.

  3. just search google for AVR “frequency counter” and you will find tons of better designed circuits that operate up to several hundert MHZ

  4. Home-made 5hz to 500Khz Frequency-Meter? That 500,000hz someone needs check their typo. Because that is way out of the audible range of 20hz-20Khz

  5. Good work there. 500Khz is low but if you’re working on something that low and if it works for you thats fine. Aesthetics could improve.

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