Thanks Phil!!!!!!!!!!!!!!!!

My friend here at the Lab could not get Arduino 13 to work, unfortunately he had removed all his executibles java files first before I managed to find your post!!!! Thanks Thanks Thanks, you rock.

Benny

Hi! Thanks for the response!

I am aware of the fact that the regular libraries should work, that's why i was asking also if there were solid library adaptations that work with 4x20 because my LCD screen actually works with KS0066U rather than the HD chip. Should be compatible, but the timing is definitely off. I have read the datasheet for my LCD and tried to compare it to the existing library and i do know that there's only 2 lines of DDRAM.

I am going to look at the link you sent me, thanks a lot for that! I actually had not come across that link in my never ending research.  
But the same memory mapping that is on that website is on my datasheet as well. I understand it but i still dont have anything working that actually fixes the alignment problem.

Should i try 8 bit mode instead of 4 bit?

thanks for all your help, i am hoping to get a really good library working and code to post it back. This problem is showing up on any possible forum with no clear answer.

Benny

Hello everyone,
I have read the previous posts on the topic, but found a whole bunch of dead links.

I am trying to get a 20x4 LCD screen to work properly (it's a New Haven module, blue with white letters).

I previously used the LCD4bit library with no problem on a 16x2, but i am wandering if anyone has a tested and working system to get a 4 line 20 char LCD screen talking with Arduino.

What's your recipe? Which library is better and is there a simple way to modify the existing library to accomodate 4 lines?

I'm experiencing the usual problems, line arrangement (1,3,2,4) and missing lines and some occasional LCD freak outs.

Any suggestion would be incredibly appreciated!! Thanks.

Ciao.

Benedetta :-?

Anyone has a valid link to Jonathan's modified LCD4bit library for 20x4 LCD? none of the original links work and not even the ones on the arduino website or playground site.

Thanks! The other ones use 2 enable pins, which is not what i have.

Thanks again, Benny