Smart LCD birght/dim...

joerg joerg.twinklephone at
Sat Apr 12 18:06:39 CEST 2008

Am Sa  12. April 2008 schrieb Marco Trevisan (Treviño):
> Since Freerunner won't have an hardware light sensor to set its LCD 
> brightness, I got some ideas about smartly changing the luminance of the 
> GTA02 screen to save its battery (still with an unknown life time :/).

Actually it's not very hard to have a light sensor in GTA02. There's 
everything you need on a decent testpoint. Just add a photodiode and a 
capacitor. PMU chip does the rest. :-) See 50633 datasheet.


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