HELP REGARDING NOKIA JHD LCD'S

SAINATH · Post by **SAINATH** » June 4th, 2009, 3:03 pm

Hiii guys, I am new to this site..I have few doubts and I hope that all my doubts will be clarified after I post them here.Guys Iam a newbie and so plss do explain me in detail

I am using windows XP and have also connected the circuit accordingly and also have executed the Win95nt ,Iam using Nokia JHD LCDs .Will smartie work on them...Please its urgent
Also my lcd has started .But data is not being sent there .I have kep the port in EPP mode . Thanks in advance

Regards
Sai

Post by **caesar** » June 5th, 2009, 9:19 am

Please post a link or the LCD datasheet so that we can help you.

SAINATH · Post by **SAINATH** » June 5th, 2009, 3:48 pm

Sir I am using JHD 162A lcd ...

http://www.datasheetarchive.com/search.php?q=JHD+162A

Post by **caesar** » June 5th, 2009, 9:22 pm

Looks like a KS0066 controller. It should work.

When you start it up, so you see the black chars on the first row?

SAINATH · Post by **SAINATH** » June 6th, 2009, 6:09 am

in the first trial i got black dots on the screen ,But on the same kind of LCD (other one) ,I got a pink colour screen,it is not even showing the green screen or the dots.How should I check whether the LCD is in working condition or not .Iam using the following circuit to connect LCD.

http://www.electronics-lab.com/projects ... ndex2.html

Thanku for the reply
Eagerly waiting for your reply

Regards
Sai[/url]

Post by **caesar** » June 6th, 2009, 8:59 am

That schematic will never work with smartie.

Please use the schematics found here: http://lcdsmartie.sourceforge.net/circuits.htm

To only test LCDS's just connect as per schematic the pins 1,2,3,15,16
It should show a black row on the first line when powered on.

SAINATH · Post by **SAINATH** » June 6th, 2009, 9:37 am

Thanku Sir, Let me checkk,before that Sir , I have a question when i switched on the LCD using the previous schematic ,only half the screen was green and the rest of it did not have any color on it,to be precise ,it was the way,as if it was off .Sir, is my LCD got burnt or something.. I will build the circuit according to the first schematic in the url u have given....
Thank You

Regards
Sai

Post by **caesar** » June 7th, 2009, 12:20 am

No problem Sai, only the top half should get a different color when powered on.
In your case, a 2x16 screen, only the top 16 chars should be filled. It is ok like this.

SAINATH · Post by **SAINATH** » June 7th, 2009, 2:51 am

Thank You Sir,now I have built the circuit .Now what is the next procedure
These are the steps I am following.Please correct me for mistakes

1.Changed Bios settings to EPP
2.Executed Windows95nt.I am using windows Xp sp2,
3. Then execute the LCD smartie.

Sir is my procedure correct?
Waiting for your reply

Regards
Sai

Post by **caesar** » June 7th, 2009, 8:56 pm

Sounds right.
Next set the screen in smartie
LPT1 or $378 (or other specific address if
you changed the default 378 in your BIOS).

and 2x16 for screen size, driver is HD44780.dll

SAINATH · Post by **SAINATH** » June 8th, 2009, 1:42 am

Yes Sir , I will do the same as you said and get back to you.

I am using LCD smartie 5.4 setup and in display plugin I have changed it to
HD44780.dll . Is this what you mean ?

In visual basic programming we keep the dll files into our System folder(windows/drivers). Do we have to do the same thing here to or LCD smartie will take care of this.

Also a last question before checking Sir,Will LCD smartie work on pentium 2or 3or 4 processors which has windows Xp?

Thank you once again Sir. I will continue as you said.....

Regards
Sai

Post by **mattcro** » June 8th, 2009, 11:00 am

You've got it right so far - select HD44780.dll in the Plugin tab under Display Settings, and type LPT1 or $378 (or the actual address if different) in the startup parameters box. On the Screen tab, select 2x16 for your LCD size.

The display driver (plugin) DLLs for Smartie are in the displays folder under your Smartie installation folder. This is the normal location and you don't need anything in your Windows/System folder.

Smartie should work fine on all PCs with WinXP 32bit and 64bit. Some people have had problems with Vista, especially 64bit.

SAINATH · Post by **SAINATH** » June 14th, 2009, 2:46 pm

Thank you Guys, Its working ...Thanks a lottt