Home automation (also known as "smart home") technology is the integration of electrical devices and one or more computer. These systems are often controlled remotely--you can use a smartphone or tablet, for instance. Most people use home automation for either added comfort or security, or to be more energy efficient.

Numerous companies offer to automate your home for a (sometimes hefty) fee. Home automation doesn't have to cost thousands to install, though: With the right equipment and a little know-how, you too can assemble your very own home automation system.

Grad School Digital Imaging student Sam Cox from the United Kingdom has a great example of how beneficial home automating can be. He began automating his home from scratch a year ago to increase his home's security. Since, he has found himself adding more features to his system for both convenience and energy savings.

"On the security front I wanted something cheap, flexible and scalable, all without paying a monthly fee. Leaving electrical equipment on standby wastes an enormous amount of energy, so having your home automatically turn these appliances off when you go sleep and back on again when you wake up ultimately saves you money."

At present, his home-automation system can perform a multitude of tasks. His custom-built security alarm system runs a set of IP webcams installed throughout the house. The alarm can project audible warnings to the intruder, as well as record footage and email a still image.