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Problems with DMF5005N
http://forum.lcdinfo.com/viewtopic.php?f=6&t=726		 Page 1 of 1
Author:  Tgo [ Sat Jun 26, 2004 9:18 ]
Post subject:  Problems with DMF5005N
I found the pinout on yahoo, connected all the pins to the lpt port but all i get is a black screen little responce, i can reset the screen through the reset pin so i can see it does respond, i used a computer power supply to obtain the +5 and -12 but when i try to use PowerLCD or LCDInfo the screen remains black and unaffected the the software

i have wired it different ways like this one

http://www.skippari.net/lcd/forumstuff/dmf5001.png
http://www.skippari.net/lcd/t6963c_schem.html
http://users.skynet.be/bk234359/LCD/Sit ... t6963c.gif

can someone point me to a problem i would really apreciate it :)
Author:  Tgo [ Sun Jun 27, 2004 5:53 ]
Post subject: 
I got it working i just had the contrast way to high and couldnt see anything :oops: but now am in a need of good programs since
LCDInfo is made for only 240x128 but i need somehting that works with
240x64 thx :) as for PowerLCD it shows up crap buncha letters and so worth nothing like a image :(
Author:  coorz [ Sun Jun 27, 2004 9:03 ]
Post subject: 
Well 240x64 on a T6963 is supported on most LCD apps, including LCDinfo.
Author:  Tgo [ Sun Jun 27, 2004 23:06 ]
Post subject: 
The problem that am having is that the lcdinfo scambles the screen i can see the winamp plugin the song name and the equalizer its just that its repeated on the side of the screen along with lots of bad characters like $$#@!# on the screen i checked my wiring and the config in lcdinfo it does not make any difference
Author:  Henri [ Mon Jun 28, 2004 8:59 ]
Post subject: 
That behaviour with LCDInfo sounds strange as my first lcd was a 240x64 T6963C so LCDInfo was first developed with that.

Also the way memory is arranged in T6963C, all software for 240x128 size should work with 240x64 also, only you only see half of the screen.

Have you got any software working with your display ?

Do you have the display set for 6 or 8 pixel wide characters ?
Author:  j3ffery [ Mon Jan 31, 2005 18:25 ]
Post subject:  Noob question
I'd like to connect this http://aasi.net/Surplus/DataVision24064.htm

I am not sure how to connect this lcd via a parallel port. I have seen pinouts but get lost when other components are required. I know very little about electornics.

I do understand resistors and potentiometers etc, but not sure how to interpret symbols.

I have connected all of the data pins but believe that the EL backlight requires some addition hardware or connection which I dont understand, also contrast control seems to be needed.

Anyone with a simple explaination of what hardware i need and how to connect it (possibly where to get them) would be appreciated.
Author:  coorz [ Mon Jan 31, 2005 19:05 ]
Post subject: 
Looks good, but i think you need the exact datasheet for that module, as that is the 'general' datasheet; it doesn't mention backlight or possible DC converter for contrast.
Author:  j3ffery [ Mon Jan 31, 2005 21:21 ]
Post subject: 
coorz wrote:
Looks good, but i think you need the exact datasheet for that module, as that is the 'general' datasheet; it doesn't mention backlight or possible DC converter for contrast.


Yeah, I wish I could find more info on it.
Author:  coorz [ Mon Jan 31, 2005 23:15 ]
Post subject: 
http://www.datavision.com.tw/english/ta ... 4064-2.htm
Looks like it needs about -7v (VDD- VEE).
EL backlight should be no problem, just get a mini inverter.
Author:  Henri [ Mon Jan 31, 2005 23:20 ]
Post subject: 
Does the display look like the one in that photo ? As that one looks to have an EL backlight.

In the datasheet on page 5 table 2.6 typical Vopr voltage is mentioned to be 9.3V.
I'm not exactly sure how that should be interpreted but I would try putting external about -9V to the VLCD pin.

Pinout looks much like here: http://www.skippari.net/lcd/t6963c_schem.html

EDIT: I see coorz already posted some new information while I was writing that and watching TV.

coorz wrote:
Looks like it needs about -7v (VDD- VEE).

I would disagree here. ;) From the page you linked to I can see typical VDD-VEE to be 12.6V. So this would make -7.6V VSS-VEE with +5V VDD.

So you should be fine by trying adjustable -7V - -9V to the VLCD pin. After all you can only find out the best contrast voltage by testing.
Author:  coorz [ Mon Jan 31, 2005 23:32 ]
Post subject: 
Yes that should be -7.6v, in the future i shall be more precise :oops:
Author:  Henri [ Mon Jan 31, 2005 23:40 ]
Post subject: 
-7v or -7.6v that doesn't really matter but what I noticed you mentioned this to be the (VDD-VEE) voltage. This was probably just a little mistake you didn't notice from your part as I know you are familiar how to make the connections but someone new to these could interpret it wrong.

So once more how I think it is:
VDD-VEE about 12v
VSS-VEE about 7v
which means the voltage to VLCD should be about -7v

And if I now managed to make it sound too complicated just let me know. :)
Author:  coorz [ Tue Feb 01, 2005 0:03 ]
Post subject: 
No not complicated, but indeed i have explained it wrong;
VDD- VEE=12.6 typical;
so that means Vee should be between -7 ~ -9volts.
Author:  j3ffery [ Tue Feb 01, 2005 0:50 ]
Post subject: 
How would I make and inverter with these specs?
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