Automatic Door Alarm Project

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.

Automatic door alarm project.

How to make a automatic door security alarm duration. Circuit diagram of automatic door bell using object detection. 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. When the door is ordinarily closed the alarm is not triggered.

This is a circuit where an alarm will go off if the door that the circuit is connected to is opened. Schematic of the door opening alert circuit. 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. Likewise we can create many useful projects using this like.

Automatic water level indicator and controller using arduino. Top 5 elctronic project with bc547 transistor tri ac rgb led. Technical hacker 3 034 views. The door opening alarm circuit or front office visitor alert is used for alerting you when a customer is at your office shop.

Full code for this door alarm project is given below. It will produce a beep sound when each new customer or visitor is entering and will automatically switch off after few seconds.