SparkFun Pressure Sensor - BMP581 (Qwiic)

The SparkFun Qwiic BMP581 Pressure Sensor is a standard-sized, 1in. by 1in. absolute pressure sensor breakout from Bosch Sensortec. The BMP581 boasts exceptional resolution (down to 1/64Pa) and accuracy while maintaining on-chip linearization and temperature compensation to provide true absolute data for pressure and temperature. The Qwiic Pressure Sensor communicates over I2C by default, utilizing our handy Qwiic Connect System so no soldering is required to connect it to the rest of your boards. However, we still routed the I2C signals out to a set of 0.1”-spaced pins for users who prefer a soldered connection. You can also configure the board to communicate over SPI using the same 0.1"-spaced pins.

The BMP581 has a wide pressure sensing range (30 to 125kPa) with excellent accuracy across the sensing range (± 0.5hPa (max)), as well as output data rates up to 622Hz (we have only regularly achieved 500Hz in testing, though). The sensor includes a configurable oversampling setting, FIFO buffer for storing up to 32 pressure samples, programmable low-pass filtering and even 6-bytes of user-programmable non-volatile memory. All of this allows you to customize the performance based on your application's requirements. Even without filtering, the BMP581 has very low noise (< 0.1Pa RMS).

The sensor has five operating modes: Normal, Forced, Continuous, Standby, and Deep Standby. Deep Standby consumes the least amount of current at just 1.5µA (typical) and peak current consumption by the sensor is 260µA.


The SparkFun Qwiic Connect System is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All Qwiic-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.


  • Supply Voltage Range: 1.71V - 3.6V
  • Current Draw:
    • 260µA - Max draw during measurements
    • 1.3µA - at 1 Hz in Low Power Mode
    • 0.55µA - Absolute minimum in Deep Standby mode
  • Data Transfer Rates:
    • I2C - 1MHz
    • SPI - 12MHz
  • 6-bytes of Non-Volatile Memory
  • Pressure Sensing Range: 30 - 125kPa
  • Pressure Data Resolution: 1/64Pa
  • Absolute Pressure Accuracy: ±0.5hPa
  • Temperature Sensing Range: -40 - 85 °C
  • Output Data Rate: 0.125 - 240Hz (Normal Mode)
  • Max Output Data Rate: 622Hz (Continuous Mode, 1x Oversampling)
  • I2C Address: 0x47 (Default), 0x46 (Alternate)
  • 2x Qwiic Connectors

SparkFun Pressure Sensor - BMP581 (Qwiic) Product Help and Resources

New!

Qwiic Pressure Sensor (BMP581) Hookup Guide

July 14, 2022

Get started with the SparkFun Pressure Sensor - BMP581 (Qwiic) following this Hookup Guide

Core Skill: Programming

If a board needs code or communicates somehow, you're going to need to know how to program or interface with it. The programming skill is all about communication and code.

3 Programming

Skill Level: Competent - The toolchain for programming is a bit more complex and will examples may not be explicitly provided for you. You will be required to have a fundamental knowledge of programming and be required to provide your own code. You may need to modify existing libraries or code to work with your specific hardware. Sensor and hardware interfaces will be SPI or I2C.
See all skill levels


Core Skill: Electrical Prototyping

If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.

2 Electrical Prototyping

Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
See all skill levels


Comments

Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

Customer Reviews

No reviews yet.