frequency meter output


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  1. #1
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    Default frequency meter output

    Good day to all of you in the forum.
    I have seen a lot of projects on the web relevant to the frequency meter using PIC's. All of them send the measured frequency on an LCD.
    I am asking if somebody knows a freq meter project in which the measured frequency is sent over the serial output.
    Thanks for helping.
    regards,
    Ambrogio

  2. #2
    Join Date
    Aug 2003
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    Default Re: frequency meter output

    Take any of those projects where the source is given up for a micro platform,
    after the sample period, at the time of printing to the display, also send the value to a hardware serial port.
    If the value is higher than a byte, fill a buffer and empty a byte at a time, and rewrite the buffer for every cycle it’s emptied.
    That kind of serial frequency counter would be as accurate as any other for the period measured,
    but if you were watching a frequency that changed fast, that chip can’t track it with much speed. It would be a horrible spectrum analyser

  3. #3
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    Default Re: frequency meter output

    Thanks Art,
    have you some sample source program to suggest please ?
    regards,
    Ambrogio

  4. #4
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    Default Re: frequency meter output

    Hi,

    Serial output, as you mentioned: http://www.moty22.co.uk/c1mhz.php

    Even better, USB output: http://www.moty22.co.uk/usb_counter.php

    Regards,

    Anand

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