Use my webcam to adjust screen brightness automatically for my windows computer.
I have found a few interesting links:
1) Ambient Light sensors (ALS) are supported in windows 7: http://msdn.microsoft.com/en-us/windows/hardware/gg463470
2) A video by a Microsoft program lead back in 2008: Building Context Aware Applications: http://channel9.msdn.com/blogs/pdc2008/pc25
3) Here is a proof of concept for a contest. Someone has actually made a simple app. Unfortunately, it is constantly running and the UI is command line: http://sven.killig.de/BLUntrl/. It is hard to understand him as he seems to go in between German and English. I wish I knew how to program cause I would probably change the code and create a better UI.
The best route to save power would probably to have the computer check every 10-15 mins or more (maybe even user selectable).
So guys what do you think?