SKU: SENS-2000
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DFRobot Fermion BMP581 High-Precision Barometric Pressure Sensor Module - I2C/SPI

₹899.00 (Inclusive of all taxes)
Out of Stock

The DFRobot Fermion BMP581 is a high-precision MEMS barometric pressure and temperature sensor module based on the Bosch BMP581 chip, offering ±0.3 hPa accuracy. It features I2C and SPI digital interfaces for easy integration with 3.3V microcontrollers like Arduino, Raspberry Pi, and ESP32 for altitude tracking and environmental monitoring.

Features

  • Powered by Bosch BMP581 flagship MEMS sensor for high-precision measurement.
  • Delivers ±0.3 hPa absolute pressure accuracy with ultra-low noise (<0.1 Pa RMS).
  • Dual digital interface support for I2C (address 0x47/0x46) and SPI communication.
  • Ultra-low power operation: 200μA active current and 2μA sleep current for battery-powered IoT.
  • Compact Fermion-series module with pre-soldered headers, ready for prototyping.

Out of stock

Description

The DFRobot Fermion BMP581 module integrates the Bosch BMP581, a state-of-the-art MEMS piezoresistive pressure sensor. This digital sensor provides highly stable and accurate absolute pressure readings from 30 to 125 kPa, corresponding to altitude measurements from approximately -1500 to +9000 meters above SEA level. Its integrated 24-bit ADC and advanced signal conditioning ensure minimal noise and high-resolution output.

Designed for robust environmental monitoring, the module operates from a 3.3V DC supply and is compatible with standard 3.3V logic levels. The inclusion of both I2C and SPI interfaces provides flexibility for system integration, whether in dense sensor arrays or as a standalone unit in drones, wearables, or weather stations. Its ultra-low power profile makes it ideal for always-on, battery-powered IoT applications.

Key Features

  • Bosch BMP581 MEMS sensor core ensures flagship-grade measurement precision and long-term stability.
  • High absolute accuracy of ±0.3 hPa across a wide pressure and temperature operating range.
  • Extremely low noise floor, typically below 0.1 Pa RMS, for detecting minute pressure changes.
  • Dual digital communication protocol support: I2C (with selectable address) and high-speed SPI.
  • Optimized for low-power applications with a 200μA operating current and 2μA sleep current.
  • Wide operating pressure range from 30 kPa to 125 kPa suitable for altitude and weather sensing.
  • Compact Fermion form-factor (19x16mm) with castellated holes and pre-soldered headers for reliable connections.
  • High-value build designed for prototyping and integration into professional-grade environmental monitoring systems.

Applications

  • Precision altimetry and vertical navigation (VNAV) for drones and unmanned aerial vehicles (UAVs).
  • Environmental weather stations and portable meteorological data loggers for atmospheric pressure tracking.
  • Indoor navigation and floor-level detection in smartphone and wearable fitness devices.
  • IoT-based smart agriculture systems for micro-climate monitoring and irrigation control.
  • Altitude-adaptive performance tuning in sports watches and wearable health monitors.

Technical Specifications

Pressure TypeAbsolute
Pressure Range30 kPa to 125 kPa
Pressure Accuracy±0.3 hPa (Typical)
Sensor TypeMEMS Digital Barometric Pressure Sensor
Output InterfaceI2C / SPI / I3C
I2C Address0x47 / 0x46 (Selectable)
Supply Voltage3.3 V DC
Operating Current200 μA
Sleep Current2 μA
Noise (RMS)< 0.1 Pa
Dimensions (Module)19 mm (L) x 16 mm (W)
Weight0.005 kg

Frequently Asked Questions

What is the operating voltage range for the BMP581 module, and is it 5V tolerant?

The DFRobot Fermion BMP581 module is designed for a strict 3.3V DC supply. The digital I/O lines (I2C/SPI) are also 3.3V logic level. Applying 5V to the supply or communication pins can damage the sensor. For use with 5V Arduino boards, you must use a logic level converter on the SDA/SCL or SPI lines.

How do I select between the I2C addresses, and what is the default?

The BMP581 sensor has two possible I2C addresses: 0x47 (default) and 0x46. The address is typically hardwired on the module PCB by DFRobot. Please check your specific module's documentation or silkscreen. You cannot dynamically switch the address via software on this pre-configured Fermion module.

Can this sensor be used for accurate altitude measurement in a drone?

Yes, the BMP581's high precision (±0.3 hPa) and low noise make it excellent for drone altimetry. Accuracy in altitude calculation depends on stable local SEA-level pressure reference. For best results, implement temperature compensation and sensor fusion with an IMU. Its low power consumption is also beneficial for battery-operated UAVs.

What is the difference between I2C and SPI communication on this module?

I2C is a 2-wire interface (SDA, SCL) suitable for connecting multiple sensors on a shared bus, with a lower data rate. SPI is a 4-wire interface (CS, SCLK, MOSI, MISO) offering higher-speed, full-duplex communication, ideal for applications requiring faster data sampling. The module's pins support both; you select the protocol by your connection and code.

Does the module include temperature sensing, and what is its accuracy?

Yes, the Bosch BMP581 chip integrates a high-linearity temperature sensor used primarily for compensating the pressure reading. While it provides a digital temperature output, its specified accuracy is optimized for pressure calibration rather than standalone high-accuracy temperature measurement. Refer to the Bosch BMP581 datasheet for detailed temperature performance specs.

Package Includes

  • 1 x DFRobot Fermion BMP581 High-Precision Barometric Pressure Sensor Module

Additional Information

Weight 0.005 kg
Dimensions 1.9 × 1.6 cm