Advanced Automatic room light controller with visitor counter with LDR & Buzzer

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This is a Advanced version of automatic room light controller with visitor counter using Light sensor and buzzer. In this project, we have measured the person inside the room. Person count increments when person enters the room and visitor counter is decremented when person leaves room. Two pair of infrared sensors does the job of detecting person. Relay is turned on when counter is greater than zero. Room light is controlled using this relay. But if there is sufficient light in the room then the room light is turned off. Light sensor, LDR does the function of light intensity detection. We have also provided a buzzer in this project. Buzzer is turned on whenever person count reaches to maximum level.

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