Embedded System Projects 🚗🔧

This repository contains two Arduino-based embedded system projects focused on safety and automation.

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📌 Project 1: Alcohol Detection & Auto-Locking System

🎯 Objective

Prevent drunk driving by detecting alcohol concentration and automatically locking the vehicle’s ignition system.

⚡ Components

• Arduino Uno
• MQ-3 Alcohol Sensor
• DC Motor + Relay Module (Engine Lock)
• Buzzer
• LCD Display

💡 Working

• The MQ-3 sensor detects alcohol in the driver’s breath.
• If the alcohol level exceeds a predefined limit, the system:
  • Locks the engine using a relay.
  • Sounds an alert via a buzzer.
  • Displays the status on the LCD.

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📌 Project 2: Accident Detection & Alert System

🎯 Objective

Detect vehicle accidents and send the real-time GPS coordinates via SMS to emergency contacts.

⚡ Components

• Arduino Nano
• ADXL335 Accelerometer
• SIM800L GSM Module
• NEO-6M GPS Module
• LCD Display
• Buzzer

💡 Working

• The accelerometer continuously monitors motion and detects sudden shocks.
• On accident detection:
  • The system fetches GPS coordinates.
  • Sends an SMS with the Google Maps location using the SIM800L module.
  • Displays the accident status and coordinates on the LCD.

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📋 Note

These projects were created for academic learning and classroom demonstration purposes, tested using real hardware components with Arduino IDE.