Automatic Room Light and Fan Controller using...

Automatic Room Light and Fan Controller using Arduino and PIR Sensor

Author Name : Harshvardhan Khare, Isha Raghvani, Madhura Ingole, Ishaan Sirdeshpande, Rushikesh Jadhao, Sushant Jadhao, Asawari Jadhav

ABSTRACT

Automatic Room Light Controller Using Arduino and PIR Sensor can be used to turn ON and OFF the illumination system of home / office routinely by sensing the presence of a human in the room by detecting motion. We often leave the lights and fans switched on when not in use in classrooms, faculty cabins, garages ,staircases etc. Thus, automatically controlling the electricity in such a way that the lighting level can be accurately matched to the actual need allows to save on energy costs and also improve the human comfort as it reduces manual switching and errors. This projects focuses on interfacing of different elements to create a home automation system using Arduino , PIR sensor, LDR sensor and relay module. PIR will spot any human movement based on the output of the PIR sensor, simuntaneously checking the output of the LDR sensor to detect presence of sunlight thus controlling the automatic switching of light and fan. Proposed system will help reduce consumption of electricity and automate the existing system making it efficient.

Keywords — (Arduino UNO, LDR Sensor, PIR sensor, Relay , Home Automation, Room light)