I'm looking for a way to reduce the real brightness (the backlight) of my lcd. I'm using android 4.2.1 on a Star b94m/b943.
I search for apps, and i found RootDim, which can decrease the light below the minimum 30/255 (default by android). I found another great app, Velis Auto Brightness, which allows to control the brightness in function of the light sensor. It can't go below the 30/255. So i thought if there were a method to reduce the default android brightness i could use Velis Auto Brightness (so auto brightness) AND use lower than 30/255 levels.
I tried this tweak of build.prop
but it didn't work. Any other ideas?