white this in terminal:
"root" or "sudo gainroot"
"echo 70 >/home/user/custom_brightness_settings"
"cat /home/user/custom_brightness_settings >/sys/class/backlight/acx565akm/brightness"

if you do the above and decide to install / use queen beecon than it is advised to:
In terminal:
"root" or "sudo gainroot"
"rm /home/user/custom_brightness_settings"
"exit" - to exit root
"echo 160 >/home/user/custom_brightness_settings" - make new settings file with user not root privileges
"exit" or close terminal
if these steps are not taken the beecon widgets cant write to custom_brightness_settings

replace 70 with to brightness level you want (0 to 255)

if you want to test a level just write in terminal
"root" or "sudo gainroot"
"echo 70 >/sys/class/backlight/acx565akm/brightness"