Build a real-time IoT monitoring system using ESP32 and DHT22 sensor to measure temperature and humidity and display the data on the Blynk mobile app and web dashboard. The ESP32 sends sensor readings over Wi-Fi to the Blynk Cloud, allowing remote monitoring from anywhere.
Components Required
- ESP32 Development Board
- DHT22 Temperature & Humidity Sensor
- 10kΩ Resistor (pull-up)
- Breadboard
- Jumper Wires
- Wi-Fi Connection
The DHT22 provides better accuracy and a wider measurement range than DHT11, making it suitable for IoT monitoring applications.
Working Principle
- ESP32 reads temperature and humidity from DHT22.
- ESP32 connects to Wi-Fi.
- Data is sent to Blynk Cloud using virtual pins.
- Blynk dashboard displays live values on gauges and charts.
- Users can monitor environmental conditions remotely
Features
- Real-time temperature monitoring
- Real-time humidity monitoring
- Historical data charts
- Mobile notifications
- Web dashboard access
- Remote monitoring from anywhere
Applications
- Weather Station
- Smart Home Monitoring
- Greenhouse Automation
- Server Room Monitoring
- Industrial Environment Monitoring
- Cold Storage Monitoring
Get the code and simulation