The master device in this project was developed to transmit the flammable gas density data, which it receives from the slave devices via the ESP-NOW protocol and measures with the sensor on itself, to the server via websocket.

• ESP32 Development Module
• MQ-9 Gas Sensor
• 64x128 OLED Display
• Buzzer
• 3.7V 18650 Li-ion Battery

• Arduino.h
• Wire.h
• WiFi.h
• esp_now.h
• WebSocketsClient.h
• ArduinoJson.h
• Adafruit_GFX.h
• Adafruit_SSD1306.h

You can add these libraries through the Library Manager in the PlatformIO IDE.

Download the project files to your computer and upload the project to your ESP32 board using PlatformIO IDE. Ensure that the required libraries are installed in the PlatformIO IDE.

Configure the necessary settings for the project in the config.h file. Settings include WiFi SSID, password, WebSocket server IP address, and port number.

If you wish to contribute to the project, please Fork the repository and create a Pull Request.

For any questions or suggestions, please email [email protected].