It describes how to configure using MQTT in Raspberry PI and Arduino + Ethernet Shield. And guide how to run it.
Want to control your microcontrollers in the cloud graphically, without writing any code? Welcome to the Tentacle, from Octoblu.
you can also control the WeMo Switch with an Arduino. Take an Arduino Uno microcontroller board, add an Ethernet Shield, two wires and a momentary push-button switch, plus our source code and you’ve got everything you need to build an Arduino Power Switch.
The author is using IP-based door bell such as 2N Helios IP or Mobotix product. However, he has been experiencing discomfort since IP compatible sound module which enables people to hear the door bell sound does not vary. As a result, he made IP-based sound module which can sound using Arduino and Ethernet Shield.