I2C LCD

[Demon]

It might be working but the lcd might not have high enough contrast.

Usually, V0 is not VDD.

Try a 20K variable resistor, V0 to center pin, VDD to one side, GND to other side.

Now turn resistor and look at LCD for changes.

Edit: also increase pause between writes to lcd in case it needs more time. Try PAUSE500 to test.

Robert