Temperature and Humidity Monitor using DHT11 and STM32

Overview: The Temperature and Humidity Monitor project using the DHT11 sensor and STM32 microcontroller offers a practical solution for environmental monitoring. By leveraging the capabilities of the DHT11 sensor, which provides accurate temperature and humidity readings, and the STM32 microcontroller, known for its high performance and versatility, this project ensures reliable and precise data collection.

Components:

1. DHT11 Sensor: The DHT11 is a digital sensor that measures temperature and humidity. It provides a calibrated digital signal that simplifies data acquisition. With a temperature range of 0-50°C and a humidity range of 20-80% RH, it is suitable for general environmental monitoring applications.
2. STM32 Microcontroller: The STM32 series of microcontrollers are renowned for their robustness and extensive range of features. With various models available, the STM32 can handle the data acquisition and processing tasks efficiently. It supports multiple I/O interfaces, making it a versatile choice for integrating with sensors like the DHT11.

Project Implementation:

1. Connecting the DHT11 to STM32: The DHT11 sensor connects to the STM32 via a single digital pin for data transmission. A pull-up resistor is typically used on the data line to ensure stable communication. The STM32’s GPIO pin reads the digital signal from the DHT11.
2. Programming the STM32: The STM32 is programmed using an Integrated Development Environment (IDE) such as STM32CubeIDE. Code is written in C or C++ to initialize the GPIO pins, read data from the DHT11, and process the temperature and humidity values. The sensor sends data in a specific format, which the STM32 must decode and convert into usable temperature and humidity readings.
3. Displaying Data: Data collected from the DHT11 sensor can be displayed on an LCD screen or transmitted to a computer or mobile device via serial communication. This step involves configuring the STM32 to interface with display modules or communication protocols, allowing users to view real-time temperature and humidity readings.
4. Calibration and Testing: Once assembled, the system undergoes calibration and testing to ensure accuracy. Comparing readings with a known reference helps verify that the system provides reliable data.

Conclusion: The Temperature and Humidity Monitor using DHT11 and STM32 provides an efficient way to monitor environmental conditions. This setup is ideal for various applications, including weather stations, greenhouse monitoring, and indoor climate control. By combining the accurate sensing capabilities of the DHT11 with the powerful processing of the STM32, this project delivers precise and reliable temperature and humidity data.

Humidity Module DHT11