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Fermion BMP581 Barometric Pressure & Temperature Sensor
· MPN: SEN0667
This compact Fermion module is built around Bosch Sensortec’s BMP581 high-performance barometric pressure sensor chip. It measures pressure and temperature w...
This compact Fermion module is built around Bosch Sensortec’s BMP581 high-performance barometric pressure sensor chip. It measures pressure and temperature with high precision, offering ±0.3 hPa typical absolute pressure accuracy for detecting small altitude, floor-level or liquid-level changes.
The module supports I2C, I3C and SPI, making it suitable for a wide range of microcontrollers and embedded systems. Its 2.54 mm pin header socket helps with breadboarding and integration into finished PCBs, while the onboard BMP581 features digital filtering and a hardware FIFO buffer for smoother data output.
With low operating current and a 2 μA sleep current, it is well suited to battery-powered IoT nodes, wearables and compact sensing projects. The product wiki provides a connection diagram, library, schematic, dimensions and component layout diagram, CAD files and the BMP581 chip datasheet.
The package includes the Fermion: BMP581 High-Precision Barometric Pressure & Temperature Sensor ×1 and a 10pin-2.54 Black Single Row Pin Header ×1.
Specifications:
- Operating Voltage: DC 3.3V
- Operating Current: 200μA
- Sleep Current: 2μA
- Communication Interface: I2C / I3C /SPI
- Interface Form: 2.54mm Pin Header Socket
- I2C Address: 0x47 (Default) / 0x46
- Pressure Measurement Range: 30 ~ 125 kPa
- Temperature Measurement Range: 0 ~ 65 °C
- Absolute Pressure Accuracy: ±0.3 hPa (Typ.)
- Relative Pressure Accuracy: ±0.06 hPa / 10 kPa (Typ.)
- Relative Altitude Accuracy: ±0.5 m / 10 kPa
- Temperature Drift Coefficient: ±0.5 Pa / K
- Pressure Data Resolution: 1 / 64
- Ultra-Low Noise: < 0.1 Pa (RMS, without low-pass filter enabled)
- PCB Dimensions: 19×16×2.49 mm
- Mounting Hole Spacing: 14 mm
- Mounting Hole Diameter: 2.0 mm
- Logic note: This module operates at 3.3V logic. A logic level converter is required when using with 5V microcontrollers (e.g., Arduino Uno).
Ideal applications include drone stability hovering and vertical velocity control, GPS navigation enhancement, indoor navigation and floor localisation, fitness tracking, precision weather stations and hydrological monitoring.
Jargon buster
Plain-language definitions for the technical terms used above.
- FIFO
- FIFO stands for “first in, first out” and is a small memory buffer inside the sensor that stores recent readings in order. This matters because it can help capture motion data without the microcontroller needing to read the sensor every single instant.
- GPS
- The US satellite navigation system used by GNSS receivers to calculate position and time. Support for GPS is important because it is widely available and often used together with other constellations for more reliable positioning.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- I2C address
- An I2C address is the number a device uses so a microcontroller can tell it apart from other devices on the same I2C bus. It matters because two devices with the same fixed address may conflict if used together.
- I3C
- I3C is a newer two-wire communication bus designed as a faster, more capable successor to I2C for sensors and small peripherals. It matters because I3C devices may offer better speed and features, but they need compatible hardware and software support.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- RMS
- RMS is a way of describing the effective level of an AC signal, such as an audio output voltage. It helps compare audio output levels more meaningfully than a peak voltage number.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
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