SparkFun Qwiic MicroPressure Sensor

The SparkFun Qwiic MicroPressure Sensor is a miniature breakout equipped with Honeywell's 25psi piezoresistive silicon pressure sensor. This MicroPressure Sensor offers a calibrated and compensated pressure sensing range of 60mbar to 2.5bar, easy to read 24 bit digital I2C output, and can be calibrated and compensated over a specific temperature range for sensor offset, sensitivity, temperature effects, and non-linearity using an on-board Application Specific Integrated Circuit (ASIC). With its ultra-low power consumption and Qwiic ports, you've got yourself a power packed little sensor!

Each Qwiic MicroPressure Sensor has a calibrated pressure sensing range from 1-25psi and a power consumption rate as low as 0.01mW typ. average power, 1Hz measurement frequency for ultimate portability. Used in multiple medical (blood pressure monitoring, negative pressure wound therapy), industrial (air braking systems, gas and water meters), and consumer uses (coffee machines, humidifiers, air beds, washing machines, dishwashers), the SparkFun Qwiic MicroPressure Sensor is a great addition to the SparkFun Qwiic ecosystem!

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.

  • Pressure Type: Absolute
  • Operating Pressure: 25psi (172.37kPa)
  • I2C Address: 0x18
  • Accuracy: ±0.25%
  • Voltage - Supply: 1.8V-3.6V
  • Port Size: Male - 0.1" (2.5mm) Tube
  • Port Style: Barbless
  • Maximum Pressure: 60psi (413.69kPa)
  • Compatible with a variety of liquid media
  • 2x Qwiic Connectors

SparkFun Qwiic MicroPressure Sensor Product Help and Resources

SparkFun Qwiic MicroPressure Hookup Guide

July 23, 2020

Get started using your Qwiic MicroPressure breakout board with this hookup guide.

Measuring Height with Atmospheric Pressure

September 29, 2022

Measure height using atmospheric pressure with your Qwiic MicroPressure breakout board!

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.

2 Programming

Skill Level: Rookie - You will need a better fundamental understand of what code is, and how it works. You will be using beginner-level software and development tools like Arduino. You will be dealing directly with code, but numerous examples and libraries are available. Sensors or shields will communicate with serial or TTL.
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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


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.

  • xsk8rat / about 4 years ago / 2

    It doesn't look like i can't formally review this, as i had "Purchasing" buy it at work instead of buying it myself from home.

    5 stars! Easy to use, very steady output - not noisy like other sensors i have used. Nice! We are tracking vacuum around 0.4 psia and it seems reliable so far.

    • Member #1622089 / about 4 years ago / 1


      I am doing a project with vacuum to create around 0 psia. But could not reach less than 3 psia. Which vacuum pump are you using?

      Thank you

      • xsk8rat / about 3 years ago / 1

        Hi, Sorry i don't know! It's some beastly industrial thing at work. It has it has a backup twin and their own room. Mark

  • Member #617617 / about 3 years ago / 1

    I found CircuitPython code that can be used with it. Works well:

  • guillengap / about 3 years ago / 1

    RECOMMENDATION: I have one of these sensors and the Qwiic connector didn't work ... It only works with 12C pins (SDA and SCL) ... it's very precise and useful, and you just have to correct the Qwiic connector

    • Member #1608375 / about 3 years ago / 1

      @guillengap can you explain what the issue was? I'm not able to communicate with the QWIC connector. I can see SDA and SCL on the test pins on the board via a scope, so it seems like it's getting the right signal. I've gone through the Tech Forum, but thought I'd ask here too since you brought up the issue, thanks.

      • guillengap / about 3 years ago / 1

        My QWICC connector doesn't communicate ... you can solder the pins GND, 3V3, SDA, SCL ... then connect them directly to the artemis board, Arduino UNO, etc and use the same libraries and examples of DOCUMENTS or:

  • philfromseattle / about 4 years ago * / 1

    You should say which exact sensor is on the BoB. From the data sheet there are 31x9x3 possibilities. I'm guessing it's the MPRLS0025PA 0000 1 x (don't know the transfer function) based on the text. But, I hate guessing when it comes to electronics. Please be explicit.

    • Sorry about that! The documents section has been updated to include the IC part number used on the breakout board by another representative.

Customer Reviews

5 out of 5

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Awesome Pressure Sensor

The metal nozzle allows for easy air-line tubing to be attached. Furthermore, the raw values have less noise and drift than the bmp pressure sensor series.