Matrix user forums

Hi Guys

I have not managed to get the LCD GMD1602K to work and I was wondering if I will ever get it to work? is it compatible to FlowCode? sorry can't upload the data sheet PDF is too big.

Regards
Xavier

Hi
Can you provide the link to the datasheet

Regards
Dazz

Hi Dazz

Here it is https://www.sparkfun.com/datasheets/LCD ... tended.pdf

Regards
Xavier

Hello,

It looks compatible but cannot be 100% sure. Have you referred to the datasheet for the EB005 E-block as the schematic at the end of the document can be used to help sanity check you have connected the LCD up to the microcontroller correctly.

You might also want to post your program so we can help to check your not doing anything wrong there.

Hi Benl

From what I understand I need to use an HD44780 if I do not want to use an inter-phase with it and connect directly to the PIC. I believe that R/W needs to be connected but the way that I have it at the moment R/W is to ground along with DB4, DB5, DB6 and DB7, this configuration worked well with my other display but I can't tell you what it was. I know that there is a way to use R/W in flowCode but have never done it before.

All the best
Xavier

Hello Xavier,

The R/W pins need to be connected to ground.

I would maybe leave data pins 0-3 unconnected rather then shorted to ground.

The data pins go to the high data nibble so pins 4-7 should be connected to the data pins on the microcontroller. The EB005 datasheet shows this.
http://www.matrixmultimedia.com/resourc ... .php?id=82

Hi benj

checked it all again and that's exactly what I did DB4 - DB7 data R/W= GND, E to the PIC, RS to the PIC, VLCD to the wiper of the pot but no joy, I think that I'm just going to have to get another one or use R/W

Regards
Xavier