My PIC is putting out a 0 to 5V signal. I noticed the RS232 connection on the back of the display is jumpered with resistors, do I need to transfer the resistors to TTL solder pads or just use solder to make the connection between the pads? Thanks for the help. I am sure that this is the issue with ...

I am almost positive that I have the PIC chip set up properly using the USART capability. I do notice that when I connect the transmit pin from the display to the receive pin of the PIC chip the startup screen of the display goes away. I have hooked up a oscilloscope and have seen the changing ...

I want to control my GLK12232-25-SM display using a 18F4520 PIC chip. I have tried to send the display simple commands to see if I am communicating to it and it doesn't seem to accept what I send. My questions are:

1.Do I need a RS232 communication chip between my PIC chip and the display for the ...