PIC16F873A with LCD 16x4

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

That's the same controller that is used in the CrystalFontz LCD that
I used to test the Flex driver. So, the Flex driver should work with
your LCD.

Did you buy this LCD new ? Or is it a used LCD from EBay ?

The main reason for black squares is that the connections are not
correct, or maybe a wire is broken, or a solder joint is bad, etc.
Carefully check all connections. Make sure the list of #define
statements matches the actual connections.

deniska_gus · Joined: 11 Jul 2006 Posts: 42 Location: Minden, Germany

I took this LCD from our store. I work in an electronic company. It is new. Ok, I will check all connections. Thank you very much

deniska_gus · Joined: 11 Jul 2006 Posts: 42 Location: Minden, Germany

PCM programmer, thank you very much. It is working! A DB1 wire was broken.