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M5Stack BMP280 Barometer Unit (U090)

M5Stack BMP280 Barometer Unit (U090)

MPN: U090
M5Stack Technology Co., Ltd.
BMP280 Barometer Sensor M5Stack Platform Evaluation Expansion Board
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Overview

The U090 is an atmospheric pressure sensor expansion board based on the Bosch BMP280, designed for the M5Stack ecosystem. It provides high-precision measurements of barometric pressure and temperature over an I2C interface, suitable for altitude tracking and weather monitoring. The unit features an integrated 5-segment filter and a compact 24x24mm form factor with Grove-compatible connectivity.

Why Choose This Part

This unit offers a wide measurement range from 300 to 1100 hPa with a low current consumption of approximately 2.7uA, making it ideal for battery-powered applications. Its pre-integrated Grove interface and 5-segment filter simplify hardware setup and digital signal processing for stable readings.

Applications

Altitude Tracking
Utilize atmospheric pressure changes to determine relative vertical movement in drones or handheld devices.
Weather Stations
Monitor local barometric trends and ambient temperature for environmental data logging.
Indoor Navigation
Detect floor-level changes in multi-story buildings by sensing minute pressure differentials.
HVAC Monitoring
Measure air pressure within ducts or sealed environments to ensure proper airflow and system performance.

Getting Started

Connect the U090 to an M5Stack Core via the supplied Grove cable and use the M5Stack library in Arduino IDE or UIFlow for rapid development. The sensor is addressable over I2C at 0x76, and engineers can utilize standard BMP280 driver libraries to configure oversampling and filter settings.

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