Nokia Display doesn't work

[stefanN]

I connected a Nokia Display pcd5844 to my Core module.

all connectoins are tested and correct. Voltage is 3,1 V but I used a 10uF  capacitor  instead of the 2,2 uF.  Then I changed the LCD Type to 7  using  change_id_v1_4 and loaded the pcd5844 example app.  But now the display shows nothing. Does anyone now, what could be wrong?

[TK.]

Hi stefaN,

at the beginning an important info: only the pcd5844 example app contains the driver, this means that you have to copy the app_lcd.inc file into other applications when you want to use them together with the display.

The example application also sets the LCD type to 7, so a wrong configuraton cannot be the problem.

How did you test the connections?

Best Regards, Thorsten.

[stefanN]

thanx for this information, so I can be shure that it's no software related problem.

I tested the Voltage at the display and I checked, if there are

220Ohm between the pin of the Display and the corresponding pin of the PIC.

Perhaps I  have the wrong display?

I bought a Display for a Nokia 3310, I don't think there are

differences.

So I'm going to check all connections, voltages, resistors...again.

I would be verry pretty if I get this display working, because it's not only cheap but also extrem flat, small, nice...  

[stefanN]

Now I'm shure, that I've the wrong display. I tested it with anothher core modul and it didn't work either.  Furthermore the additional four pins are missing.  And now the glas is broken anyway. So I'll try to get a complete 3310 instead of only the display. Or can somebody tell me, where to order a compatible display in Germany?

[Screaming_Rabbit]

Furthermore the additional four pins are missing

What do you mean with that? Which additional (compared with?) pins?

Does it look like this one?

http://www.myplace.nu/mp3/images/nokia_lcd_large.jpg

Greets, Roger

[stefanN]

i mean the four unused pins which you can see on the wiring diagramm at the  MBHP_LCD page.  

Yes, it look's like the one at  myplace.nu but instead of the tape there is a metal frame around it.

Tomorrow i'll get another used NOKIA phone. Perhaps it has the right display.

[Screaming_Rabbit]

http://serdisplib.sourceforge.net/ser/pcd8544.html

... interresting info about the display types.

Greets, Roger

[moebius]

http://serdisplib.sourceforge.net/ser/pcd8544.html

... interresting info about the display types.

Greets, Roger

Excellent! Respect!!

[TK.]

Thanks - I've added the link to the MBHP_LCD page

Best Regards, Thorsten.

[Screaming_Rabbit]

Thanks - I've added the link to the MBHP_LCD page

Best Regards, Thorsten.

... thanks.

Thorsten, could you also change the driver "title"? - I think it's realy called "PCD8544" and not "PCD5844"... this leaded to confusion in earlier posts.

Greets, Roger

[TK.]

Hi Roger,

thank you for turing this out (one year after the release ;-)

everything but the photo is renamed now (I've to create a new one)

Best Regards, Thorsten.