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[CMD] Backlight adjust script based on time of day
Hi,
I couldn't find a good tool for adjusting my laptop backlight automatically based on the time of day.
So I decided to give it a shot and created this CMD file. It is very rough calculus but it kinda works.
Still need to do the maths for latitude/month correction (perhaps someone has a bright idea?)
Code:@echo off REM ### Tweakradje 2014 REM ### Calculating sunrise/set and adjust backlight (very rough!) REM ### Run it with windows scheduler e.g. every hour REM BACKLMAX 12:00 REM /\ REM / \ 6:00 REM -/--18:00--/-- MONTH/LAT LINE UP/DOWN (HORIZON) REM 6:00 \ / REM \/ REM BACKLMIN 24:00 title Adjusting Backlight based on Time of day... SET LATITUDE=52 SET MONTH= SET HOUR= REM BACKLDIM=10 minimal in steps of 5 upwards REM BACKLMIN=20 minimal in steps of 5 upwards REM BACKLMAX=100 maximal REM DIMTIMEOUT=60 minimal in seconds SET BACKLMAX=80 SET BACKLMIN=30 SET BACKLDIM=10 SET DIMTIMEOUT=120 SET /A BACKLDIF=%BACKLMAX%-%BACKLMIN% SET BACKLEVEL= REM Get the month, %DATE% like wo 15-10-2014 Set MONTH=%date:~6,2% REM Get the Hour, %TIME% like 23:12:38,60 Set HOUR=%time:~,2% REM For 24 hour Simulation REM next "Goto SKIP_SIMULATE" line Goto SKIP_SIMULATE FOR /L %%H IN (0,1,24) DO Set HOUR=%%H & Call :SKIP_SIMULATE rem Pause Exit /b :SKIP_SIMULATE REM ### BACKLEVEL goes from 0 > BACKLDIF/2 > BACKLDIF > BACKLDIF/2 > 0 by the HOUR If %HOUR% LEQ 24 Set /A BACKLEVEL=2*%BACKLDIF%-%BACKLDIF%/12*%HOUR% If %HOUR% LEQ 12 Set /A BACKLEVEL=%BACKLDIF%/12*%HOUR% Set /A BACKLEVEL=%BACKLMIN%+%BACKLEVEL% Echo Backlight Level at %HOUR%h: %BACKLEVEL% Powercfg.exe -SetAcValueIndex SCHEME_CURRENT SUB_VIDEO VIDEODIM %DIMTIMEOUT% Powercfg.exe -SetDcValueIndex SCHEME_CURRENT SUB_VIDEO VIDEODIM %DIMTIMEOUT% Powercfg.exe -SetAcValueIndex SCHEME_CURRENT SUB_VIDEO VIDEODIMLEVEL %BACKLDIM% Powercfg.exe -SetDcValueIndex SCHEME_CURRENT SUB_VIDEO VIDEODIMLEVEL %BACKLDIM% Powercfg.exe -SetAcValueIndex SCHEME_CURRENT SUB_VIDEO VIDEONORMALLEVEL %BACKLEVEL% Powercfg.exe -SetDcValueIndex SCHEME_CURRENT SUB_VIDEO VIDEONORMALLEVEL %BACKLEVEL% Powercfg.exe /s SCHEME_CURRENT Exit /b
Last edited by tweakradje; 31 Oct 2014 at 16:12.