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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A Security Alarm Circuit using the LM358 IC is a simple yet effective system designed to trigger an alarm when unauthorized access or movement is detected. The LM358, a dual operational amplifier (Op-Amp), is used as a comparator to detect voltage changes from sensors like LDRs, IR sensors, or switches, and then activate a buzzer or relay.
₹200.00













