Hello Shredder,

You can try and use uProject:
http://www.matrixorbital.ca/software/software_alpha/uproject/

You can send contrast, backlight and other commands from there. You can also read the transmitted data when keys are pressed on the module.

Can you please check the board physically? It ...

Hello Shredder,

Can you please make sure that hardware flow control is off?

Also, may I suggest that you try a different PC?

The buffer that holds the data from RS232 is the same for the I2C, so if you are receving data via I2C, you should be able to receive data via RS232, unless there is ...

Hello Shredder,

254 / 80 / 255 - will put the contrast to max, this is why you see the display all balck. The nominal value is 128, so then the command is 254 / 80 / 128.

The connections to the PC looks good, you probably have just forgotten to mention GND, it needs to be connected as well (pin 5 ...

Ok, I cant get it to work at all with the rs232.
I connect it to the RS232 and run MOGD.. it doesnt seem to be communicating at all. None of the buttons in MOGD do anything.

I am connecting a regulated +5v powersuply, and connecting these pins

LCD RS232 on PC
Pin 8 <-> Pin 3
Pin 9 <-> Pin 2

At ...

Hello Shredder,

Thank you for posting on the forum.

Is it possible maybe that the contrast has been turned down? Can you please send it the set contrast command (254 / 80)?

A possibility maybe also is the memory that has gone bad? Can you try to upload the bitmaps and fonts again ...

So usually when I power up my display, it shows the neat little graphic that comes with it. Today when I powered it up, nothing came up, and no text will display at all.
I have it connected to a BS2PX using the I2C connection and everything was working fine. I can still issue commands to it, like ...

looks like I got it figured out.. so I figured I would post the code here for someone to see if they are looking to do the same thing..

Here is the code..

Keypad VAR Byte

Main:
I2COUT 1, 80, [254, 88] 'Command Prefix, clear screen
I2COUT 1, 80, ["Testing..."]
PAUSE 2500

DO
I2COUT 1, 81, [254 ...

So I have a GLK12232-25 WBL conneted to my Basic Stamp BS2PX with the I2C. I also have a keypad attached to the display. I am having a hard time getting the key presses from the keypad.

This code works fine.. prints "Testing..." on the LCD
Main:
I2COUT 1, 80, [254, 88] 'Command Prefix, clear screen ...