Arduino Based Security System

About the project

Do you want to build an easy security system? Well this is the perfect tutorial for you!

Project info

Difficulty: Easy

Platforms: Arduino

Estimated time: 1 hour

License: GNU General Public License, version 3 or later (GPL3+)

Items used in this project

Hardware components

Arduino Uno - R3 Arduino Uno - R3 x 1
Ultrasonic Sensor Hc-sr04 Ultrasonic Sensor Hc-sr04 x 1
Servo - Generic (Sub-Micro Size) Servo - Generic (Sub-Micro Size) x 1
RedBot Buzzer Buzzer RedBot Buzzer Buzzer x 1
Tiny Breadboard Tiny Breadboard x 1
Female/Male Ext Jumper Wires 40x12 Female/Male Ext Jumper Wires 40x12 x 1
PLASTIC 5.12X2.56BU PLASTIC 5.12X2.56BU x 1
Genuino Uno Rev3 Genuino Uno Rev3 x 1

View all

Software apps and online services

Arduino IDE Arduino IDE
Processing IDE Processing IDE

Hand tools and fabrication machines

Knife Knife x 1





This project is a Arduino Based Security System consisting of a Arduino Uno, a servo motor, a ultrasonic sensor and a piezoelectric buzzer.

Here, the ultrasonic sensor senses an object that is within its range, which activates the buzzer. This sensor data is also fed into a Processing IDE software, which creates a graphical map.

The servo motor is used to rotate the ultrasonic sensor so as to cover a large area.

This is a pretty simple project and can be done within an hour.

Here is the procedure for the project -

  • Connect the Trigger Pin of the Sensor to Pin 2 of the Arduino
  • Connect the Echo Pin of the Sensor to Pin 3 of the Arduino
  • Connect Vcc and GND of the Sensor Supply and Ground respectively
  • Place the buzzer on the breadboard
  • Connect its Positive End to Pin 10 of the Arduino and connect the Negative End to ground
  • Attach the black and red wire of the servo motor to ground and supply respectively
  • Attach the yellow wire of the servo motor to Pin 9 of the Arduino
  • Connect 5V terminal of the Arduino to supply and GND terminal of the Arduino to ground

After Finishing these connections, place the entire circuit inside the box as shown in the figure.

Then it's time to code.

Schematics, diagrams and documents




Security System_IDE


Photo of br_abishek


I am a Electrical and Electronics Engineer from SRM Institute of Science and Technology. I just love hacking and making a bunch of cool stuff and open sourcing them to you the viewers.


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