Admin: Created page with "To control the backlight of the LCD you can input value from 0 (LCD completely closed) to 255 (maximum brightness) in: /sys/class/backlight/backlight/brightness '''ATTENTION'..."

2020-10-20T06:53:06Z

Created page with "To control the backlight of the LCD you can input value from 0 (LCD completely closed) to 255 (maximum brightness) in: /sys/class/backlight/backlight/brightness '''ATTENTION'..."

New page

To control the backlight of the LCD you can input value from 0 (LCD completely closed) to 255 (maximum brightness) in:
/sys/class/backlight/backlight/brightness

'''ATTENTION'''<br>
If you are using pico-SAM9G45 without a LCD attached the [[Backlight_booster|backlight booster (L11)]] will get very hot due to the fact that the booster has no current load.<br>

How to disable the booster circuit:

1) To disable backlight booster circuit, you will need to input 0 to backlight control.
echo 0 > /sys/class/backlight/backlight/brightness

2) Alternatively, if your OS build does not have this kind of control capabilities, you can simply remove the [[Backlight_booster|L11 inductor]]. L11 is located near the 40pin ZIFF connector.

3) If you're using "[[Releases|console only]]" version of Angstrom OS the backlight booster is disabled automatically.

Backlight control - Revision history

Admin: Created page with "To control the backlight of the LCD you can input value from 0 (LCD completely closed) to 255 (maximum brightness) in: /sys/class/backlight/backlight/brightness '''ATTENTION'..."