The GY-BME280 and GY-BMP280 series are high-precision digital environmental sensor modules designed for reliable measurement of temperature, humidity, and barometric pressure in IoT, weather stations, smart home, industrial monitoring, and DIY electronic projects.These modules support a wide operating voltage from 1.8V up to 5V, with dedicated 3.3V and 5V versions available, making them fully compatible with Arduino, ESP32, Raspberry Pi, STM32, and other embedded controllers.
Both modules feature dual communication interfaces: I2C and SPI, allowing flexible wiring and fast data transmission.The I2C interface uses only 4 pins for simple connection, while SPI supports higher-speed reading for applications requiring real-time data acquisition.With high sensitivity and low noise, they deliver stable and accurate readings even in changing environmental conditions.
The GY-BME280 integrates three functions in one module:
Temperature measurement
Humidity detection
Barometric pressure sensing
The GY-BMP280 focuses on high-precision temperature and barometric pressure measurement, making it ideal for altitude estimation, weather monitoring, and pressure-sensitive applications.Both modules offer excellent stability, low power consumption, and strong anti-interference performance, suitable for long-term battery-powered devices.
Featuring a compact PCB layout and clearly labeled pins, these sensors are breadboard-friendly and easy to install in space‑constrained devices.They support a wide measurement range with high linearity and low drift, ensuring consistent performance across different temperatures and environments.Extensive open-source libraries and example codes are available, enabling both beginners and developers to quickly implement environmental monitoring systems.
Widely used in weather stations, indoor air quality monitors, drone flight control, intelligent agricultural systems, and portable detection equipment, the BME280 and BMP280 modules have become standard choices for accurate environmental sensing.With their wide voltage support, dual communication protocols, and high reliability, they provide a cost-effective and versatile solution for various measurement and automation projects.
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