Hi,
I'm working through the LCD tutorials and after wiring it up as instructed, the screen lights up when I load the tutorial sketches, but I just see the 1st row blocks lit up and the bottom row is blank. None of the text from the Hello World or Serial Input tutorials is written to the screen.
Anybody with any ideas why that might be the case?
Thanks,
Marc
Do you have a variable resistor on the VO pin to change the contrast, that's what it sounds like without further information. Do you have a circuit, if so can you post it. if not can you scribble one down and post it...
If you can see the row of blocks then it is obvious that the contrast is OK even if not optimum.
You most likely have some sort of problem with your connections that we cannot evaluate without seeing a photograph of your setup and a copy of your sketch.
A drawing of or link to a picture of the circuit that you are attempting to create is NOT suitable, we have to see what you are actually using. The same goes for the program (sketch).
Don