Smart Home Automation System

Abstract

The proposed Smart Home Automation is an application of Internet of Things (IoT). The developed system has features like controlling the appliances and intrusion detection. Controlling can be done through the App as well as manually. The system also helps in monitoring humidity and room temperature. The home automation becomes important because it gives the user the comfort and ease for using the home appliances. The implementation and design of wireless home automation control uses MQTT protocol technology. The mobile application via Wi-Fi is used to control the selective home appliances with integral security and protection. The device (Wi-Fi module) ESP8266 Node MCU has been used with a relay module and a dimmer circuit module, which consists of optocoupler, triac and a voltage regulator to control the voltage of the incandescent bulb and the fan, whereas the florescent light is connected with the relay module. The IR sensor is a motion sensor used for detecting intrusion and getting an alert via email notification whenever there is an intrusion. DHT11 sensor has been used for monitoring the room temperature and humidity and this information is displayed in the App. Through the Wi-Fi module, local router is getting connected as the SSID and password of the router has been mentioned in the coding. From there the router is presenting a secure path to the client server of Cayenne. The username and the password for the client server is also mentioned in the code. The bulb intensity and the fan regulation can be done through the client server which has been given in the form of an application. The florescent light can be switched off and on. The incandescent bulb and the fan can be regulated. The system is low cost and scalable to control a variety of appliances.

Key words: Smart home, ESP8266, Wi-Fi, cayenne, IoT