With the application for home automation Fazendão Portinha, an Arduino board (tested on Uno and Mega) and an Ethernet Shield for Arduino, it is possible to control (connect and / or disconnect) up to 10 devices inside your home. Example: lamps, fans, lamps, sandwich makers and more.More details (Arduino source code):http://www.fedablio.com.br/blog/fazendao-portinha-automacao-residencial-com-android-e-arduino/