Gravity BMP581 Barometric Pressure Sensor I2C UART

The DFRobot Gravity SEN0665 is a high-precision digital air pressure and temperature sensor based on the Bosch BMP581 of the latest generation. Compared to previous generations, the BMP581 is characterized by superior absolute accuracy (±0.3 hPa), lower noise (< 0.1 Pa), lower operating current (~700 μA), and better long-term stability. The integrated IIR filtering and the hardware FIFO buffer reduce data jitter due to short-term environmental disturbances and relieve the host microcontroller.

Features:

Bosch BMP581 with ±0.3 hPa absolute accuracy and < 0.1 Pa noise – state-of-the-art in device-class pressure sensing
Three-parameter output: air pressure (30–125 kPa), temperature, and calculated altitude with ±0.5 m relative altitude precision
Configurable IIR filter and hardware FIFO buffer for noise-reduced, stable measurement data without host overload
Optional I2C or UART via DIP switch; setting is retained after power interruption
Operating voltage 3.3–5 V with integrated level shifting; Gravity PH2.0-4P for plug-and-play with Arduino, ESP32, and Raspberry Pi
Low operating current ~700 μA for energy-efficient drone, wearable, and battery-powered applications

Application Examples:

Drone altitude control and vertical speed measurement with high-precision ±0.3-hPa pressure measurement
Meteorological data stations for outdoor air pressure, temperature, and elevation logging in the Arduino or Python ecosystem
Indoor navigation systems for floor detection and elevator positioning based on air pressure changes
Sport watches and outdoor altimeters for hiking, climbing, and cycling with compact Gravity integration
GPS augmentation systems for improved 3D positioning accuracy through atmospheric pressure correction