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Thread: lcd question

  1. #1
    FLAC
    Join Date
    Jan 2001
    Posts
    1,612

    Post lcd question

    i'm pretty sure this hasn't been asked before but is it possible that my lcd gets it's power straight from the parallel port
    hooking up an external source didn't effect it at all. Is this possible?

    BoB

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    My MPrixThree car page

  2. #2
    Constant Bitrate
    Join Date
    Dec 2000
    Location
    Beaverton, OR
    Posts
    176

    Post

    Probably not. If you wired it yourself, the power is coming from wherever you want it to come from. What was the external power supply you hooked it up to?

  3. #3
    Variable Bitrate
    Join Date
    Aug 1999
    Location
    Yorba Linda, CA
    Posts
    323

    Post

    No, a parallel port cannot supply very much current out its data lines (something like 5mA). For an LCD you will need an external 5V source, especially if you plan on using the LED backlight, which draws considerably more power than the LCD itself.

    --Jason
    Jason Johnson
    Yorba Linda, California
    http://www.m2pc.com

    MPC Phase IV - *** PENDING ***

  4. #4
    FLAC
    Join Date
    Jan 2001
    Posts
    1,612

    Post

    i've figured out what the problem was, my gound wires weren't connected right

    Thanks anyway

    BoB

    ------------------
    Check out My New Site

    My MPrixThree car page

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