This project was originally
going to be for a present for my wonderful 3 year old son Xavier (now 5). Unfortunately
two things prevented me from finishing it in time, one was my lack of time. The other was the fact that I had no time, get the picture. All you need to do is come up with a PIC routine that has a large table and you should be good to go.
Graphic LCD display:
Many people helped me out
with advice from the PICList, but for some reason it wouldn’t sink in. The display used was a
AND1392 128X128 graphic LCD that uses the TOSHIBA “T6963C”
controller. Steve Lawther was a GREAT help to me! Thanks a lot Mr. Lawther,
without your help and explanations, the code I did get working wouldn’t have
been possible!!
I used the MICROCHIP
“PIC16F84-04/P” because I have tons of them lying around and they program A LOT
faster that the PIC16F877!! The AND1391 needed a negative supply for contrast,
I used NATIONAL SEMICONDUCTOR’s “SIMPLE SWITCHER (LM2575T-ADJ)” family for
this. I also used a LED and switch on the same port. The LED would light up to
let me know when the code got to the end. It was used basically as a “debug”
indicator. If you have any questions please don’t hesitate to ask me, hopefully
I will beable to answer them. Hopefully one day this project will get
completed! If you figure out how to get this code working to feel up the entire
screen I would love to HEAR about it!! For now, I have started working with two other graphic displays that are smaller, a 96 dot by 16 line (96X16) and a 120 dot by 16 line (120X16). The display data can be put into tables that are less than the 256 byte table limit so creating bitmapped images would be faster and easier. Once I have the simpler graphic LCD project down, I will come back to my 128X128 project!!
Here is the schematic: Graphic LCD schematic (.PDF).
Source code: PICTURE.ASM
(in .asm format!).
Graphic LCD Information Sources
Scott Dattalos LCD project.
Steve Lawthers Home Page (GREAT source for T6963C data and links!!)
Data Modul (Make some very good Graphic LCDs!).
HANTRONIX (Goos APP notes!!).
All Shore Industries
Emerging Display Technologies
The Workbench - Great source of LCD project information.
steevn.geo@yahoo.comPage operating since 07/17/2000
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