Ok. I got it to work. I set the default backlight intensity to 0 to prevent the flash at startup then override the intensity to full just after power up. I didn't see this because I had an older version of the manual and these commands are not listed.

thanks.

The command to erase the startup screen worked great. Thanks.

I'm having some trouble getting the command to change the backlight state to work. This command appears to set the backlight intensity which isn't what I want because I can't turn the backlight on when the user presses the backlight ...

I'm building an embedded device using the GLK12232. How do I remove the startup screen and set the default backlight state to off? I have my own EEPROM with settings and would like to use that as the default. Basically, I want the powerup state to be a blank screen with no backlight so that I can ...

I have version 1.4 of the board.

Can you answer the question about why the SCL pin is being pulled so low? I'm alittle concerned this may affect other components on the I2C bus.

I don't believe the board is capable of doing 50000bps. I need 4a ms delay between characters as 3ms is not long enough ...

One more quick question. I'm not trying to slander the product or Matrix Orbital, just trying to understand and make sure I'm not doing something very wrong.

Now that I have things sort of working, I'm finding that the display is very slow at processing input. I need to have a 4ms delay between ...

RS-232 is the standard for COM1. If you want to connect the display to COM1 the manual is saying that you don't need to make any modifications.

I became brave tonight and pulled pin #13 on the RS-232 chip and this brought the SCL pin up to 2.3V instead of 1.2V. I also replaced the pullup resistors with 4.7K instead of 10K. This further brought up the voltage to 3.3V which appears to be high enough to get things to work.

I plan to put ...

I did some more experimentation with my multimeter and I can see that the SDA/SCK pins are connected to the correct pins on the PIC16F877A that is in the unit. But I am also seeing that the SCK pin is also connected to pin #13 of the RS-232 level converter on the board. Is this correct?

I read ...

I bought a new GLK12232-25-SM and I desoldered the RS-232 pads and soldered the I2C pads. When I use the display, I can't signal a start condition. I checked the display with a multimeter, and the SCL pin on the display is always pulling the bus low. Is this a defect in the display, or am I doing ...

Is it possible to get the full mechanical specifications for the connector. The pin spacing, the pin size, and the distance of the connector from the edge of the display. Also, I noticed that the display has some tabs that look like that are ment to go through holes on the PCB and get hot glued in ...

Are you sure you don't mean 20mil or .020 inches? The number you quote is very small.

I'm a hobbiest and bought the MOP-GL12232D-BGFW to play with because I want to display arbitrary graphics with my project and none of the serial devices seem to have this ability(some allow you to upload bitmaps into EEPROM, but that isn't exactly arbitrary graphics in my opinion). I assume the ...

I have a few questions about the GLK12232-25-SM that don't seems to be answered in the manual. I'm planning to use the unit with a PIC chip.

1. Are inline graphics possible? The manual seems to say that it's possible to display a bitmap without uploading it to the memory. But the manual doesn't ...