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DougieLawson / backlight_dimmer

Control the backlight on the official RPF display based on a touch event.
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No brightness #6

Open buddhi-deep opened 3 years ago

buddhi-deep commented 3 years ago

/sys and the following directories no bright ness

MarSoft commented 1 year ago

If you do not have anything in /sys/class/backlight/ then you should first enable the corresponding device tree overlays for your display. Also you should know that some displays don't support brightness control at all. Personally I had to make a hardware mod to my 3.5" display shield to enable brightness control (unsolder one resistor and add in a transistor + another resistor).

kirk-loeten commented 3 months ago

on my Raspi is the folder /sys/class/backlight/10-0045/actual_brightness. I change the three folder in the timeout.c and do a new make and it's work