AUTOMATIC ROOM LIGHT CONTROLLER WITH VISITOR
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This Project “Automatic Room Light Controller with Visitor counter using Microcontroller” is are liable circuit that takes over the task of controlling the room lights as well us counting number of persons/ visitors in the room very accurately. When somebody enters into the room then the counter is incremented by one and the light in the room will be switched ON and when any oneleaves the room then the counter is decremented by one. The light will be only switched offuntil all the persons in the room go out. The total number of persons inside the room is alsodisplayed on the seven segment displays.The microcontroller does the above job. It receives the signals from the sensors, and this signals operated under the control of Software which is stored in ROM. Microcontroller AT89S51 continuously monitor the IR sensor pairs, When any object pass through the IR pairs then the light falling on the IR pair are obstructed , this obstruction is sensed by the Microcontroller .