Hello i have a question about T6963c LCD's since i have a little project going on where in people can leave a msg om my desktop (trough 2x16 lcd) (check it!)
but I remembert that i had a larger lcd.
it's a DMF5005n PDF file and i would really love to connect that display if it is possible
i would even buy a arduino mega for it if needed just because I want to built it in my already modded pc case and show msg's temp's and fan speeds.
So if annybody could point/kick me in the right direction or even have a idea i would be pleased
Conclusion:
I wanna switch from a 2x16 px LCD to a 64x240px LCD
do i need another controller maybe to interact with the display?
I've just linked a T6963C lcd to my arduino some days ago ... I've taken the library there : Interfacing Toshiba T6963C LCD to Atmel AVR microcontroller and adapted it to work correctly with a Duemilanove (I avoid using pins 0 and 1 ...). The problem is that it takes 8(data)+6(ctrl) pins to connect ... which is a LOT.
I'm trying right now to use PCF8574 (IO expander on I2C) to free all those pins and use only 2 pins (I2C). It's working for the CTRL part right now, but I have some problems with the DATA ?
But beside that, the full pins solution is pretty straight ... If you're interested :
Just one remark about the pin 4 (power supply for LCD) : check carefully, because I spend a lot of time having no correct result because of this pin. On my LCD, may be different for yours, it requires NEGATIVE voltage for the contrast ... so I need to create a little current inverser for that.
But I've seen T6963C LCD which had the inverter integrated in the LCD board ... just check carefully the doc. But your LCD board looks REALLY similar to mine ... so you probably need that as well.
#include <GDt6963c.h>
void setup()
{
GLCD_Initalize(); // Initalize LCD
GLCD_ClearText(); // Clear text area
GLCD_ClearCG(); // Clear character generator area
GLCD_ClearGraphic(); // Clear graphic area
GLCD_TextGoTo(0,0);// set text coordinates
GLCD_WriteString("Hello world !!! "); // write text
}
void loop() {
delay(1000);
GLCD_TextGoTo(3,3);// set text coordinates
GLCD_WriteString("AaAaAaA"); // write text
delay(1000);
GLCD_TextGoTo(3,3);// set text coordinates
GLCD_WriteString("BbBbBbBb"); // write text
}
Haha ... No problem about the stalking, it's my pleasure to help you.
I don' know exactly how the ports are mapped on the mega, you'll probably have to change some stuff in the .h file, depending on the ports you want to use.
As you'll use a mega, you can simplify the code as you don't need to split the data into 2 port and you can use one full port. It's not necessary, but it's cleaner ? Tell me if you need some help to do that ...
Class T6963 (int horizontal pixels, int vertical pixels, int font width)
Font width for LCD is hardware controlled (ground it, or +5 VDC it), but the pin is still initialized.
For some reason my LCD doesn't need the Reset line hooked up. There is a hardware solution to the reset signal that eliminates one pin usage but it screws my disp up.
Use at your own risk, I know barely enough to submit this post, much less be trusted with libraries.
I'm strugling to get my display working with my mega. Power on on the display will show a large white rectangle. Poweirng on the arduino, the rectangle disappears and I can see a short flash of one line when the reset occurs. But then nothing.
I going to check if I get the right pins (allready converted for the mega)
on with a few leds.
Next thing will be to add some debug code -> serial output to see what's going on.
Nice i still have to try everything I just got the parts for mij power suply today <-----> still no mega :S have mailt the store so... i hope i will get a response!
I'm strugling to get my display working with my mega. Power on on the display will show a large white rectangle. Poweirng on the arduino, the rectangle disappears and I can see a short flash of one line when the reset occurs. But then nothing.
Sounds like your LCD voltage is out of wack (big white rectangle), and your reset pin is being pulled low (it is an inverted input)
You are right the reset is being pulled low.
I used Gil's code and tried to remove all the code for the second port (I had tried it before with that, but no luck either)
definitely have to change the resolution settings. Also you need to look at the CGRAM location setting (look for command B00100010, set Offset Register). I boned that up in the library and didn't leave a method for changing it. My LCD has a 32Kb Eprom attached so I put the CG at 30-32kb, if you have a smaller one I assume it can't find the CG memory.
In the initial code I couldn't get the section for 8 vs 6 bit font to work correctly either and ended up hard wiring it.
:
! ?
shit 
... No problem about the stalking, it's my pleasure to help you.