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[Lcdproc] HD44780 and lpt port wiring diagram


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  • From: paulr AT kiwiland.net.nz (paulr AT kiwiland.net.nz)
  • Subject: [Lcdproc] HD44780 and lpt port wiring diagram
  • Date: Wed Jun 14 06:51:02 2006

Oops. Here is the link

http://www.crystalfontz.com/forum/showthread.php?threadid=4656&goto=newpost



On Wed, June 14, 2006 2:44 pm,
paulr AT kiwiland.net.nz
wrote:
> Could someone please point me in the direction of the correct wiring
> diagram for connecting a HD44780 (20x4) line lcd port to the parallel port
> for LCDproc. The diagram I am using at the moment works fine under
> windows using the CrystalFontz test program but using LCDproc I get what I
> can best descibe as initialization patterns. screen panels flickering on
> and off in random order.
>
> Basically when I power up the macine I get the 1st and 3rd lines
> activated. When I start LCDd the screen flickers before reverting to 1/3rd
> lines activated When I start LCDproc the screen flickers between 1&3lines
> activated to a half activated display. It just cycles around like this. No
> details below the base 20x4 lines. Almost like it is having problems
> syncing.
>
>
> If I use the Crystalfontz test util text displays fine.
>
>
> Folow the link to see the wiring diagram I have used. The diagram on the
> LCDproc site seems to have vanished.
>
>
> Paul
>
>
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> LCDproc AT lists.omnipotent.net
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>
>






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