Software to auto adjust brightness of screen(s) from webcam

To Adjust Brightness on an Acer All-in-One Desktop

1. At bottom R.H. corner of screen, click on up-arrow to "Show Hidden Icons."
2. Click on "Color32 bpp" etc.
3. Under "Desktops and Displays" click "My Digital Flat Panel."
4. Click "Display Color."
5. "AMD VISIONControl Center" panel appears, to enable setting Brightness, among others. or "Show Hidden Icons" > "Color32bpp" > "Desktops & Displays" > "My Digital Flat Panel" > "Display Color" >

Ok, after few hours of brain excercies i have made this powershell script..here it is

while($true)
{

$a = Get-WmiObject -ns root/wmi -class wmiMonitorBrightNess
$a1 = $a.Currentbrightness

$b = Get-WmiObject -ns root/wmi -class batterystatus
$b1 = $b.poweronline

start-sleep 1

$b = Get-WmiObject -ns root/wmi -class batterystatus
$b2 = $b.poweronline

If ($b2 -ne $b1)
{
$c = Get-WmiObject -ns root/wmi -class wmiMonitorBrightNessMethods
$c.WmiSetBrightNess(0,$a1)
}

}

Copy in notepad and save with ".ps1" extension.

What it does is, it frequently checks for the power state plugged in or not. If power state is changed it will restore the previous brightness value.

I have tested this in my laptop with Win8.1, works fine.

• You can adjust the responsiveness by modifying start-sleep value (currently it is 1 second)

• To run this script Powershell execution policy must be changed from default.

• This script is only theoretical example, in practice the powershell windows will remain open, may be problematic for some. I am not discussing the ways to hide the window.