Arduino Servo Radar System 📡

A complete real-time radar system using:

• Arduino UNO / Nano
• SG90 Micro Servo
• HC-SR04 Ultrasonic Sensor
• Red & Green LEDs
• Python + Pygame Visualization
• Serial Start/Stop Control

This project demonstrates full hardware + firmware + software integration.

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🔧 Hardware Components

• Arduino UNO / Nano
• SG90 Servo Motor
• HC-SR04 Ultrasonic Sensor
• 2x LEDs
• 2x 220Ω Resistors
• Breadboard & Jumper Wires

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🔌 Pin Connections

Part	Arduino Pin
Servo Signal	D9
HC-SR04 TRIG	D10
HC-SR04 ECHO	D11
Red LED	D6
Green LED	D7
Power	5V
Ground	GND

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🧠 Features

• Real-time distance scanning
• LED object indication
• Python radar visualization
• Keyboard-controlled start/stop
• Scaled radar for close-range detection

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🐍 Python Requirements

This project works with any modern Python version (3.9+), including Python 3.14.

Install the required libraries using:

pip install pyserial pygame

▶️ How to Run

1. Upload the Arduino sketch from the Arduino/ folder to your Arduino board.
2. Connect the Arduino via USB.
3. Run the Python radar visualizer:

python Python/radar.py

4. Press S in the radar window to toggle START / STOP.

🎓 Educational Use

This project is suitable for:

• Pre-university robotics students
• Engineering freshmen
• Mechatronics and embedded systems courses

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📜 License

MIT License — Free to use and modify.