Context
Developed a complete weather data acquisition system on an STM32 microcontroller board using Sparkfun and ST sensors. The system collects environmental data and transmits it for monitoring and analysis.
Technologies Used
- Hardware: STM32 board, Sparkfun/ST environmental sensors
- Programming: C/C++ (STM32 HAL)
- IDE: STM32CubeIDE
- Protocols: I2C, SPI, UART
Implementation
Sensors integrated:
- Temperature sensor
- Humidity sensor
- Barometric pressure sensor
- Additional environmental sensors
Features:
- Multi-sensor data acquisition
- Real-time processing and averaging
- Data transmission via UART/Wireless
- Low-power operation modes
The system implements a polling or interrupt-based approach for sensor readings, with data buffering and error handling.
Results
- Successfully acquired data from multiple sensors simultaneously
- Achieved reliable sampling rate
- Power consumption optimized for battery operation
- Data accuracy validated against reference instruments
Challenges & Learnings
- Managing multiple sensor communication protocols
- Timing and synchronization of sensor readings
- Implementing robust error handling for I2C communication
- Optimizing power consumption for battery operation