AUTOMATIC ROOM LIGHT CONTROLLER USING MICROCONTROLLER AND VISITOR COUNTER

Kimbley, Rachit Mehrotra, Sohail Ahmed Khan, Sonali K. Pawar

Abstract: The Project ‘Automatic Room Light Controller Using microcontroller ATMEGA16A and bidirectional visitor counter’ controls a room light as well as count the number of individuals entering and leaving a room. When an individual enters into a room then one counter is incremented by one and one light in a room will be switched ON and when the individuals leaves a room then the counter is decremented by one. When the number of individuals in a room is greater than 5 then 2 lights will be switched ON. When the individuals in a room are more than 10 then 3 lights will be switched ON. Similarly on increase of every 5 individuals one more light will switched ON. Lights will turn OFF when all the individuals go out of a room. The total number of individuals present inside a room is also displayed on the LCD display. IR sensors and microcontroller does above job. IR sensors sense the obstruction and microcontroller receives the signals produced by the obstruction from the sensors. The received signal is operated via program stored in ROM of Microcontroller

Keywords: Microcontroller ATMEGA16A, IR Sensors, LCD, Counters

DOI: https://doi.org/10.15623/ijret.2016.0504014