The Arduino is an open-source micro controller development system that easily interfaces with a computer via USB. The Arduino makes working with micro controllers so simple that people with little electronics experience can hit the floor running. Also, because it is open-source, individuals with a little more in-depth knowledge can access the source-code and expand upon the existing platform to suit their needs. Since it is so versatile, there is a large array of Arduino projects on Instructables for individuals of any skill level to start exploring the wild world of Arduino development.