Automatic Door Alarm Project

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Automatic door alarm project.

How to make a automatic door security alarm duration. The door opening alarm circuit or front office visitor alert is used for alerting you when a customer is at your office shop. Primarily ultrasonic sensor is used to measure distance from any object but here we can see that it can be used as security alarm or door alarm with arduino. When the door is opened the magnet moves away from the sensor generating a controlling signal to sound the alarm.

In this project we will go over how to build a door alarm circuit. Schematic of the door opening alert circuit. This door open alarm uses an input sensor fixed at the corner of the door frame and a magnet fixed on the door panel close to the sensor. This is a circuit where an alarm will go off if the door that the circuit is connected to is opened.

It will produce a beep sound when each new customer or visitor is entering and will automatically switch off after few seconds. Top 5 elctronic project with bc547 transistor tri ac rgb led. This circuit operates using a pair of ultrasonic transmitter and receiver modules which are used to detect the person and then if the person is detected the door bell is automatically turned on when the person is in front of the door. When the door is opened up the alarm goes off alerting us that the door has been opened.

When the door is ordinarily closed the alarm is not triggered. Circuit diagram of automatic door bell using object detection.