PIC16F690 Comparator C1 - some helpage needed!


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  1. #1
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    I disagree.
    You seem to be doing fine.
    He who makes no mistakes, makes nothing.
    (one of my signature quotes)

    Anyhow, I've been playing with the tone detector I mentioned in the other thread.
    Getting some interesting results, but nothing workable yet.

    If that's where you're headed with the comparator, I may have some thoughts ... although, not very good one's.
    <br>
    DT

  2. #2
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    Quote Originally Posted by Darrel Taylor View Post
    I disagree.
    You seem to be doing fine.
    He who makes no mistakes, makes nothing.
    (one of my signature quotes)

    Anyhow, I've been playing with the tone detector I mentioned in the other thread.
    Getting some interesting results, but nothing workable yet.

    If that's where you're headed with the comparator, I may have some thoughts ... although, not very good one's.
    Thanks for the moral support!

    re extracting frequency from an analogue using a comparator - well, as you know, I used a sig gen - it was good, I used a guitar...alas, as predicted the result were just too erratic. I'm not at the stage yet where I feel up to programming in sufficient 'intelligence' to cater for all the variations (averaging, disregarding counts outside a 'window etc'), but that's where I want to get to.

    In the meantime, I've since changed to a PIC16F690 iiit's a challenging little PIC for someone at my level, but it has way more pins for me to play with (the last IC got on my nerves becuase I had to share some of the programming pins with the comparator pins - mucho switching back & forward)

    I read that Application Note you linked me to in my other thread ....I'm still standing on the chair trying to catch the info that went way over my head!
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    Last edited by ScaleRobotics; - 3rd September 2010 at 17:30. Reason: added app note AN257

  3. #3
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    Well I thought I would have something to say ... but I haven't got the darn thing working either.

    Maybe I should go read that appnote again.
    I'll use a butterfly net to catch the stuff wizzing over my head.

    Haven't given up yet.
    <br>
    DT

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