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-# Presentation
-[Youtube shorts](https://www.youtube.com/shorts/l88tk7wHQCE)
+# Arduino Smart Home Backend
+
+A powerful Node.js backend application for managing Arduino-based smart home systems with real-time communication, AI assistance, and comprehensive device management.
+
+## 🎥 Demo
+
+Check out our project in action: **[YouTube Demo](https://www.youtube.com/shorts/l88tk7wHQCE)**
+
+## ✨ Features
+
+- **🔌 Arduino Serial Communication**: Direct communication with Arduino devices via serial port
+- **🔄 Real-time Updates**: WebSocket integration using Socket.IO for instant device state changes
+- **🧠 AI Assistant**: Google Gemini AI integration for smart home queries and commands
+- **📊 Device Management**: Complete CRUD operations for devices, scenarios, and configurations
+- **🔐 Authentication**: Secure JWT-based authentication system
+- **📷 Camera Integration**: Camera URL management and streaming support
+- **⚠️ Alarm System**: Configurable alarm settings with history tracking
+- **📈 History Tracking**: Comprehensive logging of device states and user actions
+- **🏠 Multi-Home Support**: Manage multiple homes with isolated configurations
+
+## 🛠️ Technologies Used
+
+- **Backend Framework**: Express.js
+- **Database**: MongoDB (via Mongoose) + MySQL
+- **Real-time Communication**: Socket.IO
+- **Serial Communication**: SerialPort library
+- **AI Integration**: Google Generative AI (Gemini)
+- **Authentication**: JSON Web Tokens (JWT)
+- **Password Security**: bcrypt
+- **Testing**: Jest with MongoDB Memory Server
+
+## 📦 Installation
+
+### Prerequisites
+
+- Node.js (v14 or higher)
+- MongoDB
+- MySQL
+- Arduino IDE (for device programming)
+
+### Setup
+
+1. **Clone the repository**
+   ```bash
+   git clone https://github.com/Seveneqqq/backend-arduino.git
+   cd backend-arduino
+   ```
+
+2. **Install dependencies**
+   ```bash
+   npm install
+   ```
+
+3. **Environment Configuration**
+   ```bash
+   cp .env.example .env
+   ```
+   
+   Edit `.env` file with your configuration:
+   ```env
+   JWT_SECRET=your_jwt_secret_key
+   GEMINI_API_KEY=your_google_gemini_api_key
+   ```
+
+4. **Database Setup**
+   
+   **MongoDB**: Ensure MongoDB is running on your system
+   
+   **MySQL**: Create database and users table:
+   ```sql
+   CREATE DATABASE arduino_home;
+   USE arduino_home;
+   CREATE TABLE users (
+     id INT AUTO_INCREMENT PRIMARY KEY,
+     login VARCHAR(255) UNIQUE,
+     email VARCHAR(255) UNIQUE,
+     password VARCHAR(255)
+   );
+   ```
+
+## 🚀 Usage
+
+### Start the Server
+
+```bash
+# Development mode with auto-restart
+npm start
+
+# Production mode
+node app.js
+```
+
+The server will start on `http://localhost:4000`
+
+### Frontend Integration
+
+The backend is configured to work with a frontend running on `http://localhost:3000` with CORS enabled.
+
+## 📡 API Endpoints
+
+### Authentication
+
+- `POST /api/login` - User login
+- `POST /api/register` - User registration
+
+### Device Management (Requires Authentication)
+
+- `GET /api/mongodb/` - Get all scenarios
+- `POST /api/mongodb/scenario` - Create new scenario
+- `DELETE /api/mongodb/scenario/:id` - Delete scenario
+
+### Camera Management
+
+- `POST /api/mongodb/camera` - Add/update camera configuration
+- `GET /api/mongodb/camera/:home_id` - Get camera by home ID
+
+### Alarm System
+
+- `POST /api/mongodb/alarm` - Configure alarm settings
+- `GET /api/mongodb/alarm/:home_id` - Get alarm configuration
+- `GET /api/mongodb/alarm-history/:home_id` - Get alarm history
+
+### Device History
+
+- `POST /api/mongodb/device-history` - Add device history entry
+- `GET /api/mongodb/device-history/:home_id` - Get device history
+
+### AI Assistant
+
+- `POST /api/assistant/ask` - Send query to AI assistant
+- `POST /api/assistant/ask-with-image` - Send query with image to AI
+
+## 🔌 Arduino Integration
+
+### Serial Communication
+
+The `SerialPortManager` class handles communication with Arduino devices:
+
+```javascript
+// Example: Sending command to Arduino
+const serialManager = new SerialPortManager();
+await serialManager.ensureInitialized();
+await serialManager.sendCommand('LED_ON');
+```
+
+### Device Protocols
+
+Support for various device types:
+- Light controls
+- Temperature sensors
+- Motion detectors
+- Door/window sensors
+- Camera systems
+
+## 🌐 WebSocket Events
+
+### Client Events
+
+```javascript
+// Join home room for real-time updates
+socket.emit('joinHome', homeId);
+
+// Send device command
+socket.emit('sendDeviceCommand', { device: 'LED', action: 'ON' });
+```
+
+### Server Events
+
+```javascript
+// Device state changes
+socket.on('deviceStateChanged', (data) => {
+  // Handle device state update
+});
+
+// Serial data received
+socket.on('serialDataReceived', (data) => {
+  // Handle Arduino data
+});
+```
+
+## 🧪 Testing
+
+```bash
+# Run all tests
+npm test
+
+# Run tests in watch mode
+npm run test:watch
+
+# Run tests with coverage
+npm run test:coverage
+```
+
+## 🔧 Development
+
+### Project Structure
+
+```
+├── api/
+│   ├── mongodb/          # MongoDB routes and schemas
+│   └── assistant/        # AI assistant routes
+├── tests/
+│   ├── unit/            # Unit tests
+│   └── integration/     # Integration tests
+├── SerialPortManager.js  # Arduino communication
+├── app.js               # Main application file
+└── package.json         # Dependencies and scripts
+```
+
+### Serial Port Configuration
+
+The application automatically detects and connects to Arduino devices. Ensure your Arduino is:
+1. Connected via USB
+2. Running compatible firmware
+3. Using the correct baud rate (default: 9600)
+
+## 🤝 Contributing
+
+1. Fork the repository
+2. Create a feature branch (`git checkout -b feature/amazing-feature`)
+3. Commit your changes (`git commit -m 'Add amazing feature'`)
+4. Push to the branch (`git push origin feature/amazing-feature`)
+5. Open a Pull Request
+
+## 📄 License
+
+This project is licensed under the ISC License.
+
+## 👨‍💻 Author
+
+**Seveneqqq**
+
+## 🐛 Known Issues
+
+- Tests require internet connection for MongoDB Memory Server
+- Serial port permissions may need adjustment on some systems
+- Ensure proper Arduino firmware for device communication
+
+## 📞 Support
+
+For support and questions, please open an issue in the GitHub repository.
+
+---
+
+*Made with ❤️ for the Arduino and IoT community*