Smart home project

Project Description

This project is a smart environmental monitoring and parking system that integrates multiple sensors and components to perform the following tasks:

1. Environmental Monitoring:

   • It uses a DHT11 sensor to measure temperature and humidity in real-time.
   • The data is displayed on a 16x2 LCD screen.

2. Gas Detection:

   • A gas sensor is used to detect hazardous gas levels.
   • When gas is detected, an alert is triggered via a servo motor, which rotates twice as a warning or an actuator response.

3. Automated Parking Gate:

   • An IR sensor detects the presence of a car in a parking spot.
   • When a car is detected, a gate servo motor automatically opens and then closes after 5 seconds.

4. Real-Time Feedback:

• The system displays parking status, temperature, and humidity on the LCD in real-time.
• The user can visually monitor the system’s status and environmental conditions.

How It Works

1. System Components:

   • DHT11 Sensor: Measures temperature and humidity.
   • Gas Sensor: Detects hazardous gases and triggers a servo motor response.
   • IR Sensor: Detects the presence of a car in a parking spot and controls the gate servo motor.
   • LCD Screen: Displays parking status, temperature, and humidity.
   • Servo Motors: Actuate the gate and respond to gas detection.

2. System Workflow:

   • Initialization:

     • The LCD and sensors are initialized in the setup() function.
     • Interrupts are set up for the gas sensor to handle gas detection events.

   • Main Loop:

     • The system continuously monitors:
       • Gas levels: If gas is detected, a servo rotates twice as a response.
       • Parking spot: If a car is detected, the gate servo opens and closes automatically.
       • Environmental data: Temperature and humidity are measured and displayed on the LCD.

   • Output:

     • Displays parking status (P:X for occupied, P:Y for free), temperature, and humidity on the LCD.
     • Responds to gas detection with servo motor rotation.

Project Schematic:

Components Connections:

Monitoring LCD Connections:

Features

1. Automated Parking:
   • Detects cars and controls the gate automatically.
2. Environmental Monitoring:
   • Displays real-time temperature and humidity.
3. Gas Safety:
   • Alerts the system with a servo response when gas is detected.
4. User-Friendly Output:
   • Clear LCD output with all necessary information.

Applications

1. Smart Parking Lots:
   • Automates parking gate operation.
2. Industrial Safety:
   • Monitors hazardous gas levels and provides alerts.
3. Home Automation:
• Tracks environmental conditions for climate control and safety.