Adding Bluetooth 4.0 to your Arduino Project - Controlled by Smartphone

Arduino is a cool platform because you can easily interact with your projects from your computer. But in 2015, adding the ability to control your project from your smartphone is necessary to creating a viable product. With wireless capability, the variety of projects you can do increases exponentially. This guide will be the first part in a series that will allow you to get an unprecedented level of control over your Arduino projects from your smartphone. Sections titled “(Extra)” are not necessary to complete the project. They do, however, provide supplementary information that can help in overall comprehension.”