Results 1 to 3 of 3

Thread: Long Parallel port cable for HD44780

  1. #1
    Newbie
    Join Date
    Mar 2004
    Posts
    15

    Long Parallel port cable for HD44780

    Hello, I was wondering how long the cable connecting to an LCD display can be under normal circumstances? I have mine connected up to an extra long cable, and it doesn't seem to be getting any signals from the parallel port... I am going to try connecting it to my other computer, but I would like to know if length of the cable might be a factor in my problem.

    Thanks!

    Dwiel

  2. #2
    Newbie
    Join Date
    Mar 2004
    Posts
    15
    I have checked the wiring a million times time according to the popular diagram: http://www.myrolypoly.com/lcd_projec...s/lcd-db25.gif
    All of the data pins have 0 resistance across them.

    I have tried using MPXPLAY running in dos, and the LCD plug-in for winamp to no avail. I tried slowing down the speed at which the plug-in sent data over the line which also didn't work.

    Does anyone know what else might be going wrong?

    The specs of my LCD can be found here: http://www.mpja.com/download/14194op.pdf

    No where in the specs does it say that it is hd44780 compatible, but I've seen places online claim that they are. I also looked and teh commands are exactly the same as an hd44780.

    Thanks for the help!

  3. #3
    Variable Bitrate felix99's Avatar
    Join Date
    Apr 2002
    Location
    Europe
    Posts
    370
    I have a lcd cabeld with 5m of cable - but it only works on old amchines - it depends on the power transmitted by the lpt port- in fac tolder mainboards deliver more power so longer cables can be used - on my actual pcs the lcd with 5m of cable doesnt work at all - but some with 2m or 3m work well.
    =>> Carpc Version2 -- Epia M 10K based<<=
    ::Epia M10k,7"VGA/40GB2.5",GPS,Opus90W ::
    ::trying to build second low cost carpc::
    ::Automp3.de :: CAR= Renault Clio2 - 2 seats 1.9D

Similar Threads

  1. 5 meter long IDE cable for sale.
    By Mastero in forum Classified Archive
    Replies: 3
    Last Post: 12-31-2003, 11:13 AM
  2. never lose focus
    By marsjell in forum Software & Software Development
    Replies: 21
    Last Post: 08-12-2002, 01:18 PM
  3. using parallel port lcd
    By mr0range in forum Software & Software Development
    Replies: 1
    Last Post: 10-29-2001, 10:30 PM
  4. LCD parallel cable Cross Talk and/or port speed problems?
    By digital chaos in forum General Hardware Discussion
    Replies: 1
    Last Post: 12-20-2000, 08:48 AM
  5. Running ps/2 through parallel cable
    By adjolley in forum General Hardware Discussion
    Replies: 1
    Last Post: 11-19-1999, 11:51 PM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •