🌍 Environmental Monitoring and Data Logging System (STM32 + ESP8266 + Sensors)

This project is a real-time environmental monitoring system developed using an STM32 microcontroller. It monitors temperature, humidity, and gas levels, displays the data on an OLED screen, logs it to an SD card, and transmits alerts via Wi-Fi using an ESP8266 module.

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📦 Features

• Sensors Used:

  • 📈 DHT22 – for temperature and humidity
  • 🔥 MQ6 – for detecting flammable gases

• Microcontroller:

  • 🧠 STM32F446RE (Nucleo)

• Display:

  • 🖥️ SSD1306 OLED (I2C)

• Data Logging:

  • 💾 SD card (FATFS) with timestamped entries

• Connectivity:

  • 🌐 ESP8266 (AT Commands) for Wi-Fi transmission
  • 🖥️ Server-side control for resetting alarms

• Alarms:

  • 🚨 Buzzer + LED alerts for dangerous gas levels

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📁 Prototype