Controlling a plug with an arduino
There are already some great projects on the internet about hacking home automation systems, but what I wanted to do was to control my plugs creatively.
Thats why I decided to do this. To have the most functionalities possible I put a arduino, which I made, inside the plug switch.
How there are a contest on intructables about things related to laser, I decided to add a light sensor to the plug and program it to turn on and off what is connected to it using a laser.
It just compares the last three reads and, if the second value is bigger than the first and the third one, it turns on/off the plug.
If you don't mind please vote on it here, on the beginning of the page where there is a "wicked lasers CONTEST" banner: http://www.instructables.com/id/Turn-on-and-off-your-things-with-a-laser/
If you want to make one as well, here are the schematics and photos:
As always, comments, toughts, ideas, advices, doubts and suggestions are always welcome! :)