Low cost implementation of smart home automation

Abstract

The fast growing world needs various technologies to improve quality of life. The Internet of Things is one such technology impacting human lives. The Internet of Things is a network exchanging the data/information between the devices having Internet connectivity, sensing and computing capabilities. This work uses the ultra low power consumption ESP8266 system on chip board operating 2.4 GHz ISM band for wireless connectivity. The relay circuitry is interfaced to ESP8266 NodeMCU board using the GPIO pins in order to control 220 V supply power outlet, wherein domestic appliances such as lights, fans, air conditioning system, and so on may be controlled remotely. The WLAN SSID & password allow only authorized persons from the home to control such appliances. The Android app has been designed and generated making use of the open source web application MIT App Inventor-2 to control the domestic appliances using any Android Smart phone. The Android app created provides graphical user interface supports two options to control appliances: (i) the user can use icons or graphical buttons created for respective home appliances and (ii) they can use specific voice commands to control those home appliances using Android Smart phone. The main objective of this work is to have a system which is cost effective, robust and also scalable.