Hi all,

I have developed LCD 44780 display learning from the turorial, its nice.

I want to control the contrast and brightness from the driving micro.

What I think to do is 4 step voltage level control using 4094 serial to parralel converter, taking only 3 wires input from micro. At each parallel out put I can use a transistor all with common isolated output to the contrast and brightness.

Right or some other option ??

Also I want to change the color of the backlight from green to blue.

I want to open it up and replace green LEDs with blues ones.
Is that possible ??

Simon