This Project “Automatic Room Light Controller with Visitor Counter using Microcontroller AT89S52 continuously monitor the Infrared Receivers, When any . This Project ―Automatic Room Light Controller with Visitor Counter Output signal from AT89S52 is given to the base of the CHAPTER: 3. This automatic room light controller project with visitor counter is a reliable circuit based on the AT89S52 microcontroller. It takes over the task of controlling room.

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Timing from microseconds through hours 3. Because of this appropriate device is selected and it do its allotted function. Easy to use 3. The light will be only switched OFF until all the persons in the room go out. Mainly this block diagram consists of the following essential blocks. All we need is to do minor changes to activate this telephone as it works as to become auto dialer circuit.

By modifying this circuit and using two relays we can achieve a task of opening and closing the door. Automatic Room light Controller with Visitor Counter. This function is implemented using a pair of Infrared sensors. Actually we already have 2 such projects. One relay driver circuit we are using to control the light.


Reply Microtronics Technologies Post author 10 October, at Low power consumption 7. He has provided us a valuable guidance. Also we can provide a time lag between switching off devices.

Automatic Room light Controller with Visitor Counter (AT89S52)

So when the IR rays are interrupted by any person then Microcontroller will receive a high pulse from the IR receiver. Subscribe to updates from Microtronics Technologies Enter your email address: We have to take precaution that the IR rays of first transmitter should fall only on first IR receiver and not on second receiver. I dont like to buy some projects in some other project center. In this project can we use any sensor other than TSOP?

Reply Mukta 23 September, at Yes, IR sensors detect the direction.

Free Shipping in India CD contains following things: TV, radio set, fun, flat iron, computers, chargers. It may be a mobile phone or any landline phone or even auomatic control room.

Automatic Room light Controller with Visitor Counter (AT89S52)

Initially second sensor will be activated and later first sensor will be activated. Please email us your address in detail.


It is used to increase the current gain.

Below is the diagrammatic representation on how the two sensors should be placed on the door frame http: Reply shanthini 27 January, at 4: Thus Microcontroller increments the count. And PC interfacing can be used to send data to computer then a computer application can be developed to send this data auromatic internet.

The phenomenon remains same that no project ever can be executed proficiently and efficiently without sharing the meticulous ideas, technical expertise and innovative thought put forwarded by the technical and non technical veterans.

We have not used any separate IC for the counting. However for this we need to modify the circuit. The LTS is a 0. This circuit, in effect, produces a pulseat pin 3 whose width t is just the product of R1 and C1, i. Reply Microtronics Technologies Post author 19 July, at 4: Now swap object in reverse direction to decrement the count.

Reply Rajkumar 6 September, at 4: