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Set LCD brightness from code?

LamarMarcotte37

New member
So, about two weeks ago I received the Arduino starter kit. Love IT!

Now I came up to the project that displays info on the LCD screen.
For a fututre project I got in mind, I found a setup without using a pot-meter.
Now I'm wondering: is it possible to:
- Shut the LCD off/on from code?
- Set the brightness of the LCD backlight from code?

Any help is greatly appreciated!

thx in advance.
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... Now I'm wondering: is it possible to:
- Shut the LCD off/on from code?
Yes. You can use an I/O pin to control a transistor (or FET) that switches power to the display. Since you dont mention what kind of display, I'm assuming a character display. Graphics displays usually have commands that will blank the screen, but the controller is still active (and consuming power).

- Set the brightness of the LCD backlight from code?
Yes. You can use another I/O pin set up as a PWM output to control a transistor (or FET) that switches the backlight at various duty cycles.
 
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