🔧 Components

1. Web Interface 🌐

• Modern, responsive design using Bootstrap
• Real-time schedule updates via WebSocket
• Simple time input fields for ON/OFF scheduling

2. WebSocket Server (websocket_server.py) 🔄

• Handles web client connections
• Maintains schedule checking (every 3 seconds)
• Publishes ON/OFF commands to MQTT at scheduled times

3. MQTT Subscriber (subscriber.py) 📥

• Receives commands from MQTT broker
• Manages serial communication with Arduino
• Provides detailed logging of all operations

4. Arduino Controller (arduino/relay.ino) ⚡

• Controls physical relay on pin 7
• LOW = Light ON, HIGH = Light OFF
• Includes debug serial output

🛠️ Setup Requirements

Hardware Requirements

• Arduino board
• Relay module connected to pin 7
• USB connection between Arduino and computer

Software Dependencies

• Python 3.x
• Required Python packages (install via pip install -r requirements.txt):
  • paho-mqtt
  • pyserial
  • websockets
• Arduino IDE for uploading the sketch
• Modern web browser

⚙️ Configuration

MQTT Broker Settings

• Default broker IP: 157.173.101.159
• Default port: 1883
• Topic: relay/controll

Serial Communication

• Default port: /dev/ttyACM0
• Baud rate: 9600

Web Interface

• HTTP server: http://localhost:8000
• WebSocket server: ws://localhost:8765

🚀 Usage

1. Upload Arduino Sketch

   # Using Arduino IDE, upload arduino/relay.ino

2. Install Dependencies

   pip install -r requirements.txt

3. Start WebSocket Server

   python websocket_server.py

4. Start MQTT Subscriber

   python subscriber.py

5. Access Web Interface

   • Open http://localhost:8000 in your web browser
   • Set your desired ON and OFF times
   • Click Submit

🔍 Debug Output

WebSocket Server

• Shows schedule reception and MQTT publishing
• Logs schedule checking every 3 seconds

MQTT Subscriber

• Shows connection status
• Logs command reception and forwarding
• Displays Arduino responses

Arduino

• Confirms command reception
• Shows relay state changes
• Reports current light status

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

🤝 Contributing

1. Fork the repository
2. Create your feature branch (git checkout -b feature/AmazingFeature)
3. Commit your changes (git commit -m 'Add some AmazingFeature')
4. Push to the branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

🔒 Security Note

The MQTT broker IP is hardcoded for demonstration purposes. In a production environment, consider:

1. Using environment variables for sensitive configuration
2. Implementing MQTT authentication
3. Using TLS for MQTT and WebSocket connections

✨ Customization

• Modify the web interface design in static/style.css
• Adjust schedule check frequency in subscriber.py
• Configure MQTT topics and broker settings in both Python scripts