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Hall Effect details in Parallax docs? — Parallax Forums

Hall Effect details in Parallax docs?

Tom FTom F Posts: 59
edited 2007-02-17 04:48 in BASIC Stamp
Do any of the Parallax texts have wiring and other details on how to use the Hall Effect device?

Comments

  • Bill ChennaultBill Chennault Posts: 1,198
    edited 2007-02-17 01:07
    Tom F--

    Darn! I was sure that StampWorks did, but I can't find it if it does. The Melexis Hall Effect device is dirt simple and I have seen wiring diagrams SOMEWHERE. I will continue to look.

    I know it is dirt simple because I bought several of them and I would not have done that if they were anything BUT dirt simple.

    Perhaps, one of the folks on this board that can easily answer your question will.

    --Bill

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    You are what you write.
  • Tom FTom F Posts: 59
    edited 2007-02-17 01:38
    Well, I found the attached schematic at the Melexis site. It is simple, but I figure that a Parallax text would have a more detailed discussion possibly with hints and tricks.
    527 x 528 - 30K
  • Martin HebelMartin Hebel Posts: 1,239
    edited 2007-02-17 01:40
    Hall effects typically come on two styles - digital and analog (linear). Digital is easy, supply power, read the output, BUT many have open collector outputs so you need a pull-up resistor on the output to see the high.

    The analog version you'll need to being into an ADC or op-amp compatator.

    Ok, I see now you have a fairly complex one with digital data output.· I'd have to look closer.· Do you need one that complex?· Are you usingit for simple counting, or actual flux measurement?

    -Martin

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    StampPlot - GUI and Plotting, and XBee Wireless Adapters
    Southern Illinois University Carbondale, Electronic Systems Technologies
  • Tom FTom F Posts: 59
    edited 2007-02-17 01:43
    Ah ha! The milling machine with Hall Effect www.parallax.com/html_pages/robotics/machining/RPM_display.asp has the schematic.
  • Bill ChennaultBill Chennault Posts: 1,198
    edited 2007-02-17 04:48
    Tom F--

    Double-duh on me! I did not see the schematic THIS TIME! I have read that article several times and that is doubtless where I saw the schematic, as well. I read it earlier today, looking for the schematic that for some reason I could not see!

    --Bill

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    You are what you write.
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