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It looks like you're interested in setting up an IoT home automation system using the DHT11 sensor to monitor temperature and humidity, an ESP32 microcontroller, and the Blynk app for notifications and email alerts. This is a great project idea! Here's a step-by-step guide to help you get started:
Components Needed:
1. ESP32 development board.
2. DHT11 sensor (for temperature and humidity measurement).
3. Breadboard and jumper wires.
4. USB cable for power and programming.
5. Blynk app (downloadable from app stores).
Steps:
1. Set Up the Hardware:
• Connect the DHT11 sensor to the ESP32 using jumper wires.
• Connect the VCC pin of the DHT11 to the 3.3V pin on the ESP32.
• Connect the GND pin of the DHT11 to the GND pin on the ESP32.
• Connect the DATA pin of the DHT11 to a GPIO pin on the ESP32 (e.g., GPIO 2).
2. Install Arduino IDE and ESP32 Board Support:
• Download and install the Arduino IDE from the official website.
• Open the Arduino IDE and go to "File" "Preferences".
• Add the following URL to the "Additional Boards Manager URLs":
https://dl.espressif.com/dl/package_e...
• Go to "Tools" "Board" "Boards Manager", search for "esp32", and install the ESP32 board support.
3. Install Required Libraries:
• In the Arduino IDE, go to "Sketch" "Include Library" "Manage Libraries".
• Search and install the following libraries:
• "DHT sensor library" by Adafruit.
• "Blynk" by Blynk Inc.
4. Create a Blynk Account and Get Auth Token:
• Download the Blynk app on your smartphone and create an account.
• Create a new Blynk project and obtain the authentication token from the email sent to you.
6. Air Quality Monitoring:
• You can add an additional sensor (e.g., MQ-135) to measure air quality. Connect it to the ESP32 and update the code accordingly.
7. Email Alert Configuration:
• Blynk provides an email notification widget that you can add to your project.
• Configure the widget to send an email when a specific condition (e.g., high temperature or humidity) is met.
8. Upload the Code:
• Connect your ESP32 to your computer via USB.
• Select the correct board and port in the Arduino IDE.
• Click the "Upload" button to upload the code to your ESP32.
9. Monitor the Data:
• Open the Serial Monitor in the Arduino IDE to view the data being read from the DHT11 sensor.
10. Monitor Data on Blynk App:
• Open your Blynk app and check if the temperature and humidity values are being updated on the Value Display widgets.
• Set up email alerts based on your chosen conditions.
