Motor driver L293D is connected to pin0 and pin1 of Arduino for opening & closing the door. Data pins namely D0 to D7 are connected to Arduino digital pins 8,9,10,11 and RW is directly connected to the GND terminal. LCD display pins RS and EN are connected to 12 and 13 pins of Arduino. An LCD display is used to display the status.
Where Dout pin is directly connected to pin14 (A0) of Arduino UNO. Here, the PIR sensor consists of three terminals such as Vcc, Dout, and GND. The circuit connection of an automatic door opening system is shown above. The circuit is built with an Arduino UNO, 16×2 LCD, PIR sensor, connecting wires, breadboard, 1 k resistor, power supply, motor driver and DVD. The circuit diagram of an automatic door opening and closing system is shown below. Automatic Door Opening System Automatic Door Opening System Circuit When a body reaches the operating range of the PIR sensor, it sends a signal to the micro controller to open and close the door. This signal which is detected by the sensor is fed to a controller to function a door motor through motor driver IC. Generally, a human body emits infrared energy which is detected by the PIR sensor from a particular distance. This is achieved with the help of a passive infrared sensor. This project is used to sense any body movement near the door. Here is a solution to open and close the door i.e, movement sensed automatic door opening and closing system. Opening and closing of doors have been always a boring job, especially in places where a person is always required to open the door for visitors such as hotels, shopping malls, and theaters.