Automatic Door Opening System
An Automatic Door System using Arduino, an ultrasonic sensor, and a servo motor that detects an approaching object and opens the door automatically.
Description
The Automatic Door System is designed to open and close a door automatically based on the detection of an object or person using an ultrasonic sensor. The ultrasonic sensor measures the distance of an approaching object, and when the object is detected within a specific range (e.g., 15 cm), the Arduino sends a signal to the servo motor to open the door. After a set time or when the object moves away, the servo motor closes the door automatically.
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An XOR (Exclusive OR) gate is a digital logic gate that outputs true (1) only when the number of true inputs is odd. For two inputs, the output is high when the inputs are different. XOR gates can be constructed using basic logic gates or directly with transistors (BJT or MOSFET). Using transistors, we can design compact, efficient circuits for custom digital logic applications.
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