Smartphone input/output interface for IoT applications

Smartphones have changed the way people communicate and interact with each other; they have provided mobile internet access available almost everywhere and they replaced individual devices for storing and listening to music, photo camera and even GPS navigation. Today, these devices have a huge processing power, available even in lower end models, but they are used mainly to communicate and interact between people. This paper proposes a method for smartphones and tablets to communicate and interact with other devices, which are not necessarily connected to the internet. In order to achieve this, an input/output (I/O) board is proposed, which enables the smartphone to replace the standard microcontroller used in most automation and Internet of Things (IoT) applications.