Infrared Remote Controlled Home Automation System Based on Microcontroller

Abstract

Remote controller is one of the applications of electronics to increase the facilities of life. In this project, an infrared remote controlled home automation system has been developed to make our life even easier. It gives one the ability to control multiple home appliances. The system has been designed in such a way that it can be used to control the home appliances using any infrared remote even the television remotes. The device supports two of the major infrared remote protocols NEC and RC5. The circuit has been designed based on PIC microcontroller 16F877A. To receive the infrared signal an IR receiver has been interfaced with the microcontroller. To control the home appliances relays have been used as power switches. To control the intensity of light/fan a MOSFET has been interfaced with the microcontroller using optocoupler. The program for the system has been developed using C programming language and compiled by CCS C compiler for the system. The whole system has been interconnected and the developed program has been burnt into the microcontroller using PicKit2. The performance of the system has been studied and it is found that the system works properly without any interruption of noise. The coverage range of the remote control has been measured and found that it works properly from a distance of 7 m.