Hello Rachel!!

thank you very much for your answer. I think that was the problem: Rx and Tx were swapped. But, after solving that, I had another problem which cannot be solved. I connected the chip to 12V by mistake and I burnt it :-(

I am going to ask for a new one, but before that, I want to ...

Hello from Spain!!

This is my first time using LCDs. I have got this model: GLK12232R-25-WBL-E. I am trying to connect it to my computer but I am not able to see it in my PC.

These are my connections:
Yellow
Black - GND
Black
Red - 5V
SCL
SDA
GND - black cable from the RS232 adapter.
Rx ...