An IoT-based security system developed using Arduino and a laser sensor to detect unauthorized entry.
This project continuously monitors a laser beam focused on a photo sensor.
When the beam is interrupted, the microcontroller detects intrusion and activates a buzzer alarm.
- Arduino Uno
- Laser Module
- LDR / Photo Sensor
- Buzzer
- Resistors and connecting wires
The laser light falls on the sensor creating a stable signal.
If an object interrupts the beam, the signal changes and Arduino triggers the buzzer to alert intrusion.
- Arduino
- Embedded C/C++
- Sensors & Actuators
- Hardware Interfacing
- Real-time intrusion detection
- Instant buzzer alert
- Low cost security system
- Easy to install and maintain
The working demonstration video is available in this repository.
Mohammed Abdul Hafeez
Group Academic Project
- Arduino programming and circuit connections
- Implemented intrusion detection logic
- Testing and debugging of the system
- Laser Module → Digital Pin 7
- LDR Sensor → Analog Pin A0
- Buzzer → Digital Pin 8
- Power → 5V and GND
