🤖 Smart Autonomous & Remote-Controlled Firefighting Robot

🎯 Project Overview

This project aims to design and implement an intelligent robot capable of detecting, locating, and extinguishing fires. It operates in two modes: Autonomous for emergency response and Manual for remote navigation via Bluetooth.

Key Objectives:

• Manual Navigation: Full control via Bluetooth.
• Obstacle Avoidance: Real-time distance sensing to prevent collisions.
• Safety Alerts: Immediate sound alarms (Buzzer) and Bluetooth notifications upon danger detection.
• Fire & Gas Sensing: Continuous monitoring for flames and hazardous gas leaks.
• Automated Response: Precision movement toward heat sources and automated fire suppression using a water pump.

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💻 Firmware Features & Logic

The system is built on an Arduino-based firmware with a focus on real-time task management and hardware synchronization.

1. Motion & Differential Drive

• Independent control of rear drive wheels.
• Smooth maneuvering using velocity differential for precise turns.
• Modular movement functions: moveForward(duration), turnRight(duration), etc.

2. Intelligent Priority Management

The robot follows a strict safety hierarchy to ensure the most critical threat is handled first:

1. Gas Detection (Highest Priority)
2. Obstacle Avoidance
3. Fire Localisation
4. Manual Bluetooth Commands (Lowest Priority)

3. Sensing & Localization

• Triple Flame Sensors: Strategically placed for precise fire localization (Left/Center/Right).
• Ultrasonic Sensor: High-precision distance measurement for safe navigation.

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⚙️ Operational Modes

🟢 Autonomous Mode

The robot scans the environment continuously. Once a fire is detected:

1. Localization: It calculates the direction and aligns itself with the flame.
2. Approach: Moves toward the fire, stopping at a safe distance (12 cm).
3. Suppression: Activates the water pump for 5 seconds.
4. Feedback: Sends "EXTINCTION IN PROGRESS / COMPLETED" via Bluetooth.

🔵 Manual Mode (Bluetooth Control)

The user can take full control using the following commands:

• F: Forward | B: Backward | L/R: Turn Left/Right.
• P: Pump ON | C: Pump OFF.

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🛡️ Fire Suppression Scenario (Example)

1. Detection: Fire identified at 50 cm.
2. Navigation: Progressive approach in 10 cm steps with real-time direction adjustments.
3. Action: Stops at 12 cm; activates the pump for 5 seconds.
4. Completion: Resumes surveillance mode automatically after extinction.