Ultrasonic Radar System Using Arduino

Introduction

The Ultrasonic Radar System using Arduino is an advanced project designed for detecting and tracking objects within a specific range. It uses an ultrasonic sensor (HC-SR04) to measure distances and a servo motor to scan the area. The data is visualized on an LCD display or a computer screen using Processing software. This system mimics the working of real-life radar systems and is ideal for security applications, robotics, and obstacle detection.

Components Used

• Arduino Uno – Microcontroller to process sensor data
• Ultrasonic Sensor (HC-SR04) – Measures distance using sound waves
• Servo Motor (SG90/MG995) – Rotates the sensor for scanning
• LCD Display (16×2 or OLED) – Displays detected object distances
• Buzzer & LEDs – Alerts when an object is detected
• Computer with Processing Software – For radar-like graphical visualization

Working Principle

1. Scanning the Area – The servo motor moves the ultrasonic sensor from 0° to 180° and back.
2. Measuring Distance – The ultrasonic sensor emits sound waves and calculates the distance to the object based on the time it takes for the waves to bounce back.
3. Processing the Data – Arduino collects and processes the data, sending it to an LCD display or graphical radar interface on a computer.
4. Alert Mechanism – If an object is detected within a certain range, the system triggers a buzzer and LED alert.

Key Features

✔️ 360° Object Detection – Scans a full or semi-circular area for obstacles.
✔️ Real-Time Visualization – Displays a live radar-like interface on a PC.
✔️ Adjustable Range & Speed – Can be customized based on requirements.
✔️ Security & Surveillance – Can be integrated into automated security systems.
✔️ Obstacle Avoidance – Useful in robotics and autonomous vehicles.

Applications

✅ Military & Defense – Simulates radar systems for training and surveillance.
✅ Home & Industrial Security – Monitors surroundings for intrusions.
✅ Robotics & Automation – Helps robots detect and avoid obstacles.
✅ Smart Vehicles – Can be used in cars for collision detection.

This Arduino-based ultrasonic radar project provides a simple yet effective way to understand radar technology and can be enhanced for advanced real-world applications. 🚀