Arduino tells you when “you have mail”

OK its been done before.  This is a little different at is uses a magnet as the sensor and an arduino clone for the controller.  Nice thing about this arduino (called montieno) is its really small and has built in wireless.  It talks to a RPi (of course) in the house that then relays the message that there is mail.

http://hackaday.com/2013/03/13/mailbox-notifier-texts-when-the-letter-carrier-arrives/?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+hackaday%2FLgoM+%28Hack+a+Day%29