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Thread: Frequency to voltage board

  1. #1
    Fusion Brain Creator
    Join Date
    Mar 2005
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    2,221

    Frequency to voltage board

    --------------------------------------------------------------------------------

    Hey boys and girls...

    I'm designing the frequency to voltage output board. The specs so far:

    1-channel
    67hz/volt
    ~4000rpm/volt
    Works with any V3/V4 board

    ~$15 per board.

    Any changes before I send it out for production?

  2. #2
    Low Bitrate
    Join Date
    Dec 2007
    Posts
    105
    Now you tell me.. After I have already submitted mine. I could have let you do all the work and I could have been lazy and waited. Cool if mine have a problem I can order 2 from you and not have to re-submit.

  3. #3
    Fusion Brain Creator
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  4. #4
    Low Bitrate
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    Dec 2007
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    You've got mail..

  5. #5
    Variable Bitrate
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    Sep 2007
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    this would be quite useful for figuring out engine speed (based on tach signal) and vehicle speed (based on speed sensor)

    you have my attention sir
    Planning: [|||||||||-] 90%
    Purchased: [|||||||||/] 99%
    Installation: [|||||||||-] 90% (when is anyone's project ever REALLY done...)

  6. #6
    Newbie
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    Aug 2008
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    Decatur Illinois
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    Frequency to voltage

    Can the circuit be modified to have another range? My max RPM will be 4,000. If I could change a resister and get 1,000 rpm per volt it would be ideal.

  7. #7
    Variable Bitrate
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    my question is, how accurate will it be, like within how many RPM?
    Planning: [|||||||||-] 90%
    Purchased: [|||||||||/] 99%
    Installation: [|||||||||-] 90% (when is anyone's project ever REALLY done...)

  8. #8
    Fusion Brain Creator
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    Quote Originally Posted by FredWorrell View Post
    Can the circuit be modified to have another range? My max RPM will be 4,000. If I could change a resister and get 1,000 rpm per volt it would be ideal.
    yes, you can.

    anyway, in current form it's pretty accurate.

    brain's good for about 0.01 volt

    1v = 4000 rpm

    so it'd be good to about +/-40rpm

    that's a whole lot better than factory

  9. #9
    Variable Bitrate
    Join Date
    Sep 2007
    Location
    Export, PA
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    When will it be available for purchase good sir? I havn't seen nick on MSN in a while to talk to him...

    I'm gonna be ordering a bunch of stuff soon here.

    Do you think that you could get me a schematic with component info for a driver board so that I can power stuff in my car without using relays? I need to power up to 30A circuits... I read up some on some MOSFET's, but I'm no engineer, and I don't fully understand how that jazz works.....

    Hell, i'll pay you if i have to...i just want to be able to power some things using solid state electronics instead of relays...

    PM me what it's gonna take to get you to do it. I can lay it out as long as i know what components are needed and what is wired to what... I use ExpressPCB to lay stuff out, which is sufficient for what I need usually...
    Planning: [|||||||||-] 90%
    Purchased: [|||||||||/] 99%
    Installation: [|||||||||-] 90% (when is anyone's project ever REALLY done...)

  10. #10
    Fusion Brain Creator
    Join Date
    Mar 2005
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    2,221
    we have 40A driver boards coming, compatible with on/off or PWM.

    should be available for purchase in a couple weeks.

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