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Home automation is the residential extension of building automation and involves the control and automation of lighting, heating, ventilation, air conditioning (HVAC), appliances, and security. Modern systems generally consist of switches and sensors connected to a central hub sometimes called a "gateway" from which the system is controlled with a user interface that is interacted either with a wall-mounted terminal, mobile phone software, tablet computer or a web interface.

While there are many competing vendors, there are very few world-wide accepted industry standards and the smart home space is heavily fragmented. Popular suites of products include X10, Ethernet, RS-485, ZigBee and Z-Wave, or other proprietary protocols all of which are incompatible with each other. Manufacturers often prevent independent implementations by withholding documentation and by suing people.

The home automation market is in 2015 predicted to have a market value over 10 billion US$ by the year 2020.

The Internet Of Things is the most trending technology today that stands alongside wearables and robotics. It is a very simple concept where devices in our home or wherever they are , have the capability to communicate with each other via the internet.Usually sensors are used with this technology to pass data to the internet. You can imagine a sensor installed in your garden which uploads data like temperature, humidity, soil purity ,etc to the internet, and this data will be visible to you from anywhere around the world.Or imagine home automation systems connected to the net , which can be used to control appliances in your home like lights, door locks, air conditioning, etc through a web interface or smartphone application. A lot of technologies are being developed around this concept such as independent light-weight IoT networks, protocols for passing data,etc. Here, I will show you how you can get started on making a raspberry pi home automation system that is web based using normal HTTP protocols.You will be able to control any appliance in your home from anywhere around the world when your done with this Raspberry Pi home automation tutorial.