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Thread: Seiko L4034 4X40 LCD Cable

  1. #1
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    Mar 2001
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    Post Seiko L4034 4X40 LCD Cable

    I was told by someone on #mp3car that buying that .99 cent 14-pin lcd cable was all I needed to do to hook this lcd up to my printer port cable so I didn't have to solder. Is this true? The lcd has 18 pins and that cable is only a 14-pin cable? I don't want to have to solder, cause I know i'll screw it up. Any ideas?

  2. #2
    Live and Kickin'
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    Answer: NO!

    the 40x4 is completely different from all other lcd's. It has 18 pins, the data lines are reversed, and it needs E2 as well as E1, and the +/- for the backlight.

    It also doesn't have any pins to attach that to, anyway

  3. #3
    Low Bitrate
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    Cornwall, England
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    have a look here i found it after I screwed up mine Seiko LCD
    Some good advice but you will still have to solder it.

    Just recieved my second yesterday ...think I will be more careful


    Edie209
    Edie209

    http://www.ridgeway.plymouth.sch.uk/majikfish/majikfish.htm

  4. #4
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    Apr 2001
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    Unhappy

    Has anyone used this display from varitronix? I bought one off eBay and I think the guy that sold it to me sent me the wrong wiring diagram. So.... I ended up hooking VB+ and VB- to E1 and E2.

    Did I fry my display?

    It is model MDL(S)-40466 http://www.varitronix.com/catalog/clm.html

  5. #5
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    Possibly, but probably not. They can take some abuse. I hooked one up to 12V by accident, and it still worked.

    Then again, I put the 12 on the power, not the data line.

    It should be fine, though

  6. #6
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    Apr 2001
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    Question

    Well, I rewired it properly and it doesn't work.

    Should the backlight come on as soon as +5v is supplied to the anode terminal?

  7. #7
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    Yes, the backlight should come on when you give it power, but it needs the +5 and ground.

    Cathode = +
    Anode = -

    +5 to cathode, ground to anode.

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