Smart Autonomous Car System

Overview

A comprehensive embedded system integrating multiple modules to create an intelligent autonomous vehicle capable of:

• Line following with PID control
• Wall following with ultrasonic sensors
• Obstacle detection and avoidance
• Multi-mode operation
• Real-time status display
• Visual and auditory feedback

Features

1. 5 Operation Modes:

   • Manual Control
   • Line Following
   • Wall Following
   • Obstacle Avoidance
   • Intelligent Auto Mode

2. Sensor Suite:

   • 4x IR sensors for line detection
   • 2x Ultrasonic sensors (obstacle & wall)
   • Battery voltage monitoring
   • Motor current sensing

3. Display System:

   • 16x2 LCD for detailed information
   • 7-segment display for distance
   • 8x LEDs for status indication
   • RGB LED for mode indication

4. Control System:

   • Dual PID controllers
   • State machine architecture
   • Emergency stop system
   • Error detection and handling

Hardware Requirements

• ATmega328P microcontroller
• L298N Motor Driver
• HC-SR04 Ultrasonic sensors
• TCRT5000 IR sensors
• 16x2 LCD Display
• 4-digit 7-segment display
• RGB LED and indicator LEDs
• Push buttons for control
• 12V DC motors with encoders
• 12V Battery with voltage regulator

Setup Instructions

1. Clone the repository
2. Update pin configurations in config.h
3. Build the project: make all
4. Flash to microcontroller: make flash
5. Connect all hardware according to schematics
6. Power on and select mode

Testing

# Run unit tests
make test

# Check system diagnostics
# Press MODE button to cycle through modes
# Press STOP button for emergency stop