Re: [lcd4linux] Four Disokays (HD44780)

[Magnus R. <mag...@gm...>]

Hi Michael,

thank you for your fast answer.

> Hi Magnus,
> 
> > I think the particular display is controlled by pin number 6,  all other
> connection  are identical for each display
> This is correct. Pin 6 (ENABLE) controls to which display the actual
> data ist sent
> 
> > In the moment I see the following configuration for pin number 6:
> > 
> > Display 01 : parallel port  pin 01 = STROBE
> > Display 02:  parallel port  pin 13 = SELECTED          (?)
> This will not work, because SELECT is an INPUT pin and you need an
> OUTPUT signal...
In the wiki (example two display on one bus)there is the a connection between pin 13 (parallel port) and pin 6. 

> 
> > Display 03:  parallel port  pin 17 = SELECT INPUT  (?)
> > Display 04:  parallel port  pin ?? = 
> 
> There are four control pins available: STROBE, AUTOFD, INIT and
> SELECTIN. Which pin you use for which display makes no difference, you
> just have to specify the correct wiring.
> 
Means this a double connection because normally AUTOFD ist connected to pin 5 (display) and INIT to pin 4 (display) ? 


> There's a good documentation for the different pins at the lcd4linux
> wiki, on the HD44780 display page.
> 
> 
> bye, Michael
> 
> PS If you finish your "monster display", could you please provide some
> photos for the wiki?
Surely, and also a plan of all connections

bye, Magnus

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