DomoticHome is a simple and lowcost way to bring some smartness in your home with 50$ :). This project is still in beta test. For more details Arduino Forum
What do you need to work out DomoticHome? An Arduino with Ethernet shield, an Android device and some electronic skills.
More devices will be added soon if you have any reqeust drop down 2 lines at us or compile the form here.
Via Vincent Demay