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Shelly 4x16 hd44780

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  • Shelly 4x16 hd44780

    I have purchased acouple of shelly 4x16 hd44780 backlit lcd from a guy on ebay. the problem was that he didn't have a schematic or any info(i didn't know this until it arrived). he sent me the generic one used for almost every other 4x20 on the market. My lcd's have a 15 pin input while most other 4x16 and 4x20's have 16 pin inputs. this i am hoping is the problem. if you have any info on the shelly lcd's i would really appreciate this. thanks a ton!

  • #2
    yours dont have a backlight so pins 15 and 16 are missing at a guess

    or the backlight pins are elsewhere on the pcb

    cheers
    pcman
    donate to my team in the ****box rally all proceeds go to the cancer council http://www.everydayhero.com.au/dodgy_mechanics

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    • #3
      it does have a backlight which is pin 15 at +5 volts but i don't have any contrast adjustment because there isn't a pin 16. when i connect it up, i can get the backlighting to work but i don't get any text. i have tried a couple different winamp plugins too.

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      • #4
        hmm
        sounds like its sharing a ground for the backlight and power

        dunno tho

        do you know the pinouts of the lcd??

        cheers
        pcman
        donate to my team in the ****box rally all proceeds go to the cancer council http://www.everydayhero.com.au/dodgy_mechanics

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        • #5
          i don't have the pinouts for the lcd. I tried contacting other winners of the auctions for that lcd but so far no one has replied. I have also tried contacting shelly directly but they have not returned my call yet. thanks for the help though. i really appreciate it.

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