🚀 Smart Home Energy Management System using ESP32

🌟 Project Overview

The Smart Home Energy Management System is an IoT-based project using ESP32, Blynk, and DHT22 to remotely monitor and control home appliances. It features:

• Remote appliance control via the Blynk app.
• Real-time temperature and humidity monitoring.
• PIR motion detection for security.
• LCD display with custom symbols to show system status.
• Energy-efficient home automation.

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📷 Project Demo

🚀 Simulation: Smart Home Energy Management
📸 Screenshots:

• (refer word file)

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⚙️ Features

• 🛠️ Remote Appliance Control: Turn appliances on/off using the Blynk app.
• 🌡️ Temperature & Humidity Monitoring: Displays real-time readings on the LCD and Blynk app.
• 🔥 PIR Motion Detection: Detects motion and activates lights.
• 📊 LCD Display: Shows appliance status, temperature, and humidity with custom symbols.
• 🌐 Blynk Integration: Remote access and control via WiFi.

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🛠️ Components Used

Component	Description
⚡ ESP32	Microcontroller
🌡️ DHT22	Temperature & Humidity Sensor
🔌 Relay Module	Controls appliances
🟢 PIR Sensor	Motion Detection
🖥️ LCD (20x4 I2C)	Display system status
🌐 Blynk App	Remote control and monitoring

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🔧 Circuit Diagram

(refer word file)

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🔥 How It Works

1. ESP32 Initialization:

   • Connects to WiFi and Blynk cloud.
   • Initializes the LCD and DHT22 sensor.

2. Blynk Controls:

   • Switches (SW_1 to SW_5) control appliances.
   • PIR motion detection activates the LED.

3. Temperature & Humidity Monitoring:

   • Reads from the DHT22 sensor.
   • Displays the values on the LCD and Blynk app.

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🚀 Getting Started

✅ Hardware Requirements

• ESP32 board
• DHT22 temperature & humidity sensor
• PIR motion sensor
• 5V relay module
• 20x4 I2C LCD display
• Jumper wires & breadboard

🔧 Software Requirements

• Arduino IDE (or PlatformIO in VS Code)
• Blynk App
• Wokwi Simulation (for virtual testing)

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⚙️ Installation and Usage

1. Clone the Repository:

git clone https://github.com/Real-Time-IoT-project.git
cd Real-Time-IoT-project

2. Install Dependencies:

   • Install the following libraries in the Arduino IDE:
     • Blynk
     • DHTesp
     • LiquidCrystal_I2C

3. Blynk Configuration:

   • Create a new project in the Blynk app.
   • Add 5 buttons for appliance control.
   • Add 2 labels for temperature and humidity display.
   • Copy your Blynk Auth Token and update it in the code.

4. Upload the Code:

   • Connect the ESP32 board.
   • Upload the code to the board using the Arduino IDE.

5. Run the Project:

   • Open the Blynk app to control appliances.
   • View real-time temperature and humidity data.

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🔥 Blynk App Configuration

• Button Pins:
  • SW_1 → V0
  • SW_2 → V1
  • SW_3 → V2
  • SW_4 → V3
  • SW_5 → V4
• Temperature Display: V5
• Humidity Display: V6
• PIR Sensor Indicator: V7

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🔥 Troubleshooting

• No LCD display?
  • Check the I2C address and connections.
• No WiFi connection?
  • Verify your WiFi SSID and password.
• Incorrect temperature/humidity readings?
  • Ensure the DHT22 sensor is properly connected and powered.

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📚 References

• ESP32 Documentation
• Blynk Documentation
• Wokwi Simulator

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📜 License

This project is licensed under the MIT License.
Feel free to modify and distribute the code with attribution.

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👨‍💻 Author

👤 Thillai Nirmal K
📧[email protected] 🌐 GitHub Profile