LCDInfo.com

Ok, I think I will try to do it, when I will have some more time
The only thing that worries me is if I burn the LPT port... I think I will power 7404 from external power source.

oh, almost forgot, when I have a documentation of 74LS04 -> PDF
on second page. How should I read this characteristics, is mA on output voltages for all gates, or for only one? And when I connect a LED after this IC will I overload it?

I surely report what happen after test Hope, it would be succesful

Hi henri ,
I just wanted to know whether we could use a 3v zener coupled with a 100 ohms resistor instead of the 3.3v regulator?What say?

http://users.skynet.be/fa358153/david/tuto3310/index.htm

I have followed this (french) tutorial (Although I ended up quitting the Zener diodes, 'cause my motherboard only gives me 2.7 v if I use them).

6 x 1K2 ohm R's
1 x 2,2 uF
1 x 1 uF

That's all I used, and I works fine. If your paralell port gives 5V, you may consider changing R's values, but it worked fine for me with those.

I was just wondering if i could use that 74LCX245, what converts +5V to +3.3V, to power up my LCD?

I think 74LCX245 can source enough current to power the lcd but you also need a 3.3V supply to power 74LCX245 so I'm not seeing why you would like to do that ?

Hi henri,

I got a small problem with my 3310 lcd. I got it wired-up like this:

8pins (3310 lcd)

lpt----lcd------resistors (Are wired between the lpt and the lcd pins)
pin---pin------value
2-----2--------1K
3-----3--------1K
4-----8--------1K
5-----5--------1K
6-----4--------1K
25---6
------1------------------ 2,85 volts ( got a external power supply)
------7------------------not connected

My power supply gives a regulated 2,85 volts. According to the scematic below.



The problem is when I start LCDinfo it shows the test_84x48 screen for a second or 2 and then it doesn't do nothing....wel sometimes it blinks the test screen and then for a view minutes nothing again. I dont know whats wrong with the lcd or the software but i can't get i working properly. Please can you give me some advise Thanks in advance.

EDIT: It now gives an almost black test screen...Al the pixels are black. This cant be right

Henri (or other developers), do you think that you could make the driver for these displays compatible with the serdisplib pinout.
(http://serdisplib.sourceforge.net/ser/pcd8544.html)

Also i think it would be cool if someone could write a HOWTO or something on using LCDInfo.

Thank you.

coldfire:
As you can get the software work for a while I think your software side should be ok. Maybe you have some problems with the power to the lcd. Maybe it's not clean enough and the lcd resets itself or something similar. Or maybe there's noise in the data lines.
Also the completely black screen might be because of power problems or incorrect voltages.

rbn:
Yes, I should make it compatible with that (or to be more precise make the wiring settings user definable like in most other drivers).

I got some problems finding these parts in a webshop close to my country (norway) that sends to private persons.

Is it possible to use any of the transcievers found here http://www.elfa.se/elfa/produkter/en/2012956.htm ? i found the 74lvc245, but its made by philips and not texas instruments as the one ippe- found a sheet for ( http://www-s.ti.com/sc/ds/sn74lvc245a.pdf )

I cant find the correct regulator either, but after what i understand LP2980 ( http://www.elfa.se/pdf/73/730/07308422.pdf ) does the same thing.

74LVC245 should be just fine. Also LP2980 should work fine. As you can see you don't need the exact parts, just parts that have the same functionality.

great, thanks

I´m a little confused [/img]

Based on your post I can only refer you here: http://www.skippari.net/phpBB2/viewtopi ... =2527#2527

I moved the programming question to the development forum: http://www.skippari.net/phpBB2/viewtopic.php?t=751

Where can I get the driver chip for the 3310 screen in Australia e.g. (jaycar or dickmiths) etc. etc
I have looked everywhere in my town