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7Semi BMP581 Barometric Pressure & Altitude Sensor Breakout, 622Hz, Range: 30 to 125kPa

₹889.00 (Inclusive of all taxes)
Out of Stock

The 7Semi BMP581 breakout is a high-precision MEMS digital barometric pressure and altitude sensor, compatible with 3.3V microcontrollers like Arduino, Raspberry Pi, ESP32, and STM32 via I²C, I³C, or SPI interfaces. It delivers ultra-fine pressure resolution for applications requiring accurate environmental monitoring and altitude tracking.

Features

  • High-precision absolute pressure sensing with ±30 Pa accuracy and up to 1/64 Pa resolution.
  • Ultra-low power operation, from 1.5 µA in deep standby to 260 µA in normal mode, ideal for battery-powered IoT.
  • Supports I²C, I³C, and SPI digital interfaces with configurable oversampling, filtering, and a 622 Hz output data rate.
  • Wide operating range from -40°C to +85°C and a pressure span of 300 to 1250 hPa (30 to 125 kPa).
  • Breakout board includes Qwiic connector and standard 0.1” header pins for solder-free or breadboard integration.

Out of stock

Description

The BMP581 is a state-of-the-art MEMS piezoresistive pressure sensor offering exceptional stability and resolution. Its digital core provides calibrated pressure and temperature data, enabling precise altitude calculations with a relative accuracy of approximately ±0.5 meters. The sensor’s advanced signal conditioning and on-chip processing ensure reliable performance in dynamic environmental conditions.

Designed for seamless system integration, the breakout provides multiple communication protocol options and features like a built-in FIFO buffer for efficient data handling. Its wide supply voltage range from 1.71V to 3.6V makes it directly compatible with modern 3.3V logic systems without requiring level shifters, simplifying design for drones, wearable electronics, and industrial monitoring stations.

Key Features

  • High-performance MEMS digital barometric pressure sensor with excellent long-term stability.
  • Ultra-fine pressure resolution up to 1/64 Pa for detecting minute atmospheric changes.
  • Extremely low power consumption profiles optimized for always-on IoT and portable devices.
  • Flexible digital communication via I²C, I³C, and SPI interfaces with configurable addresses.
  • Programmable oversampling rates and IIR filtering for balancing noise performance and data rate.
  • Integrated FIFO buffer stores up to 32 pressure/temperature samples for host processor efficiency.
  • Robust operating temperature range from -40°C to +85°C for harsh environment deployment.
  • Compact breakout design with Qwiic connectivity and standard headers for rapid prototyping.

Applications

  • Drone and UAV altitude hold and vertical velocity control systems.
  • Portable weather stations and environmental monitoring networks for precise atmospheric pressure tracking.
  • Indoor navigation and floor-level detection in smartphones and wearable devices.
  • IoT sensor nodes for building automation, HVAC pressure differential monitoring.
  • Sports and fitness wearables for altitude gain tracking in hiking and climbing applications.

Technical Specifications

Manufacturer Part NumberBMP581
Sensor TypeMEMS Digital Barometric & Altitude Sensor
Pressure TypeAbsolute
Pressure Range300 to 1250 hPa (30 to 125 kPa)
Absolute Accuracy±30 Pa (±0.3 hPa)
Relative Accuracy±6 Pa (≈ ±0.5 m altitude)
ResolutionUp to 1/64 Pa
Output Data Rate (ODR)Up to 622 Hz
Supply Voltage1.71 V to 3.6 V
InterfaceI²C, I³C, SPI
Current Consumption (Normal Mode)260 µA
Current Consumption (Deep Standby)1.5 µA
Non-Volatile Memory6 bytes
Operating Temperature-40°C to +85°C
Package TypeBreakout Board
ConnectorsQwiic connector, 0.1” header pins
Weight0.008 kg
Dimensions (Shipping)6 x 6 x 3 cm

Frequently Asked Questions

What is the operating voltage range for the BMP581 breakout?

The BMP581 sensor operates from 1.71V to 3.6V DC. This range is ideal for direct integration with 3.3V microcontroller systems like ESP32, Raspberry Pi, and many STM32 boards without requiring a level shifter. Ensure your logic voltage matches this supply range for proper communication.

What communication interfaces does this sensor support?

This breakout supports I²C (with two selectable addresses), I³C, and SPI digital serial interfaces. The Qwiic connector provides solder-free I²C connectivity, while the standard 0.1" headers give access to all pins for SPI or I²C wiring, offering maximum flexibility for your project integration.

How accurate is the altitude measurement from this pressure sensor?

The sensor provides a relative pressure accuracy of ±6 Pa, which translates to an altitude resolution of approximately ±0.5 meters under stable atmospheric conditions. For absolute altitude calculation, you must provide a known reference pressure (e.g., SEA-level pressure) to the host algorithm.

Can this sensor be used for high-speed data logging?

Yes, the BMP581 supports a maximum output data rate (ODR) of 622 Hz. Combined with its programmable oversampling, built-in FIFO buffer (storing 32 samples), and SPI interface, it is well-suited for high-speed applications like drone flight controllers or real-time atmospheric turbulence monitoring.

Is the BMP581 suitable for battery-powered projects?

Absolutely. Its ultra-low power consumption makes it ideal for battery-operated devices. It draws only 1.5 µA in deep standby mode and approximately 260 µA in normal operating mode. You can further optimize power by configuring the oversampling and data rate settings based on your application's needs.

Package Includes

  • 1 x 7Semi BMP581 Barometric Pressure & Altitude Sensor Breakout Board

Additional Information

Weight 0.008 kg
Dimensions 6 × 6 × 3 cm