tecnologia

ESP32-based IoT project for monitoring environmental parameters using CO2 sensors and ThingsBoard integration.

Features

• CO2 and TVOC monitoring using SGP30 sensor
• Wi-Fi provisioning with secure authentication
• MQTT integration with ThingsBoard
• Over-the-air (OTA) firmware updates
• Dynamic sampling rate configuration
• Secure device provisioning

Project Structure

tecnologia/
├── components/
│   ├── power_manager/      # Deep sleep schedule management
│   ├── sgp30/              # CO2 sensor driver and handler
│   ├── tb_client/          # ThingsBoard MQTT client
│   └── wifi_component/     # Wi-Fi provisioning and connection
├── main/                   # Main application code
└── README.md

Hardware Requirements

• ESP32 development board
• SGP30 CO2/TVOC sensor
• I2C connection:
  • SDA: Configured GPIO pin
  • SCL: Configured GPIO pin

Features

Sensor Capabilities

• CO2 measurement (eCO2)
• Total Volatile Organic Compounds (TVOC)
• Configurable sampling and reporting rates
• Automatic baseline calibration

Connectivity

• Secure Wi-Fi provisioning
• MQTT communication with ThingsBoard
• Automatic reconnection handling
• Device provisioning support

Remote Management

• OTA firmware updates
• Dynamic configuration via ThingsBoard
• Real-time telemetry reporting
• Attribute synchronization

Building and Flashing

1. Set up ESP-IDF environment
2. Configure project:

   idf.py menuconfig

3. Build:

   idf.py build

4. Flash:

   idf.py flash monitor

Configuration

Key parameters can be configured in menuconfig:

• Wi-Fi provisioning credentials
• Sampling rates
• ThingsBoard connection details
• Device name and credentials