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PostPosted: Mon Feb 21, 2005 21:38 
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Joined: Sun Jan 09, 2005 17:13
Posts: 20
no there isn't cable between those cards, cause they are one piece in a bigger setup :/ and coorz, those doesn't help me cause there isn't that HD61830 chip in display, it's in other card but It was in same machine


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PostPosted: Mon Feb 21, 2005 21:46 
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Joined: Wed Sep 08, 2004 21:40
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That could be a help... If you take the other card and only connect the needed pins to your display you would not have to connect ram, oszillator, etc. to the HD61830... You could save some work and much time...
Would you please make pics of the whole lcd and the other card!?


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PostPosted: Mon Feb 21, 2005 21:54 
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yeah I'm going to take those now I'll post them in 15 minutes


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PostPosted: Mon Feb 21, 2005 22:08 
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Joined: Sun Jan 09, 2005 17:13
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Here is pics of the controller card:

Image

as you can see there is 10-pin connector, and 20-pin connector, so I think that 10-pin connector has something to do with the display's 10-pin connector ;)

Image

So if you can find out something please tell :)


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PostPosted: Tue Feb 22, 2005 11:25 
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Joined: Wed Sep 08, 2004 21:40
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That card looks good! It can be a great help (for you)...

Can you trace the pins with your multimeter? Make a list how the pins are connected to each other and to the connectors. Which pin from the HD61830 goes to which pin at the connector and so on...


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PostPosted: Tue Feb 22, 2005 15:21 
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I can do it when I have time today I'm quite busy, I'll try to catch some time in the evening..

do you know what is that rom in the card? and what it have to do with the whole display controller


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PostPosted: Tue Feb 22, 2005 16:41 
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Joined: Wed Sep 08, 2004 21:40
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You can (should) use the whole card as it is as controller-card for the lcd.

The datasheet for the ram can be found here:
http://www.alldatasheet.com/datasheet-p ... 517AL.html

Every lcd-controller needs some ram. The controller writes the data it gets for the next image into this ram and when the image is completely built in the ram, the controller takes the data out of there and sends it to the display.

Is that answering your questions?


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PostPosted: Tue Feb 22, 2005 16:50 
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Joined: Sat Apr 17, 2004 17:42
Posts: 467
Location: The Netherlands
Possibly the socket contain(ed) a ROM or EEPROM to display static logo/info on the display. What kind of machine did it come from?
That board certainly looks usable.

_________________
My Plexeon-Insane LCD!-Or this one!-LCDinfo-LCDStudio


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PostPosted: Tue Feb 22, 2005 19:17 
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Joined: Sun May 05, 2002 22:05
Posts: 2063
Location: Lappeenranta, Finland
The additional socket might also be for some custom font ROM or similar. I'm not 100% sure but I think HD61830 had this kind possibility.

But that controller board you have looks like it should be enough to drive the display. That 10 pin connector found from both the controller board and display is most likely meant to be connected together. Just find some cable for it and also find out which way to connect the cable. If you trace the HD61830 pin names where the connector pins go and also trace some of the display connector pins going to the IC's in the display we should be able to tell you how to connect it.

Also that other connector should have signals for connecting to LPT port and voltages. Again if you trace the traces going to the HD61830 we should be able to tell you how to connect things.

I know I could see most from your pictures already but I'll save my time and let you trace where things go and do all the work and give us easier presentation of it to work with. ;)


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PostPosted: Wed Feb 23, 2005 8:18 
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Joined: Sun Jan 09, 2005 17:13
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It's from weighing-machine :) I can trace the pins today, when I get back from school, so I'll post it here when I have done it ;)


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PostPosted: Mon Jan 30, 2006 20:08 
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Joined: Mon Jan 30, 2006 17:50
Posts: 6
I´m writting a source code for the HD61830 + PIC18F452. It is a commented code and contains some advanced functions you may like. It is available at: http://eletronica.50webs.com/

I hope it may help.

Roberto.


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