I have an non backlit lcd Think its a nanox NDM204 with a Sanyo LC7985NA controller (and another chip hd66100f). I have been told it wires same as a hd44780. What I need to know is if its not backlit do I need to wire the backlit power? And if its not backlit why are they there?
Ok got it working with test signal but not sure what next Have LCDC but don't know my screen type. Anyone got a clue?
you shouldn't need to wire up the backlight's + and - (or A and K, or power and ground, or whatever you want to call them). It's on a different circuit from the LCD electronics. when you say it works with a test signal, what sort of signal are you giving it?