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4x40 LCD Setup Problems

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  • 4x40 LCD Setup Problems

    I just recently got a 4x40 LCD and am in the process of setting it up with my MP3player. However I downloaded the latest WinLCD plugin for winamp. I used INI file from Arby so that the title was at the top and and Equalizer in the middle and the rest of the info at the bottom. When I run it, I get lots of misc. garbage in the letters. the Equilizer is nothing but P's and its not running very smoothly. Is there something that I need to setup in the BIOS for the Parallel port? perhaps a different plugin? I am using a new 15 foot parallel cable. Could the signal be too weak? Also, the backlight and contrast are REALLY touchy is there a way that I can fine tune it a little better?

    If you need pics, I will get them on here tonight.
    System Status - Starting Over
    Computer: None

    Vehicle: Silver 2002 Malibu

  • #2
    Other than the words "Aaaarrrrhhhh Search"

    Here's a couple of suggestions, try LCD print to see if works at all, have a go to.Mike Site to get a copy.

    There have been several discusions on parallel port cable lenghts, like this thread and the up shot is, that you should be OK, although I'm sure someone will correct me on that.

    Try using a lower value resistor in series with the back light resistor, that'll give you a crude and fine tune ajustment. Don't ask me what value, you'll have to play around, and figure that out yourself.

    And you say people actually pay money for M$ Windows? (Does what it says on the URL) (The new car, with zero rust!) (My other site)
    Total re-design underway: on the whole progress is very slow as the car is taking up too much time :)


    • #3
      aaron killed a kitten

      aaron killed a kitten


      • #4
        Alright I did the search and didnt find anything about the problems that I am having. Here's a few pics to help you see whats happening. Also, is there any way to make the picture more crisp? I have to turn the back light up which takes away from the clarity.

        System Status - Starting Over
        Computer: None

        Vehicle: Silver 2002 Malibu


        • #5
          Since it looks like all the characters are in the right places, check your BIOS settings and try different LPT port configurations (ECP etc...)


          • #6
            This may be of little help, but the inversed P in visualisation is usual - my densitron did the same until i blew it up (long story...)

            Anyways, I contacted Markus Zehnder of the famous winamp plugin and he said that the reason for this is that some displays have a full solid block at a specific character on the chip, while others (non Seiko) have inversed other characters like ours. He plans to add the option to have a solid block custom character at a later date. As for the garbage - try it on another machine. This will help to eliminate parallel port problems.

            From someone who has been there, done that and got the picture, good luck!
            Mediabox Hardware Project
            Current Stage: A complete redesign, although not much happening right now!

            Mediabox Software Project
            Status: Writing Sync Software (still) and playing around with interface
            To do: Far too much!


            • #7
              my LCD did that for a while and i double checked that everything was wired correct and it was. It turned out that if i deleated all the custom characters, it worked great, and got rid of all the garbage. Try that if your still having problems
              "A4 Quattro. Rocket Science."


              • #8
                How do you delete all the custom characters?
                Silver 1999 Nissan Pathfinder!
                Completion: [*********-] 90%
                Everything working! Mobile MP3s ROCK!
                LEFT TO DO: Improve power on circuit, fix slow boot time

                - 550mhz PIII on Abit BH6
                - 128MB RAM
                - 40x4 Backlit Character LCD
                - 17 key numeric keypad - Repainted buttons
                - 2.1GB laptop drive for OS
                - 4.3GB drive for MP3s

       Redesigned, new pics!