Adafruit
Adafruit LPS25 Pressure Sensor - STEMMA QT / Qwiic
The Adafruit LPS25 Pressure Sensor Breakout features the ST LPS25HB — an absolute barometric pressure sensor that measures atmospheric pressure from 260 to 1...
The Adafruit LPS25 Pressure Sensor Breakout features the ST LPS25HB — an absolute barometric pressure sensor that measures atmospheric pressure from 260 to 1260 hPa. Use it for weather monitoring, altitude estimation, or any project where accurate air pressure readings are needed.
The LPS25 delivers 24-bit pressure measurements at up to 25 Hz, with accuracy within 0.2 hPa after calibration. This STEMMA QT breakout includes level shifting and voltage regulation, making it compatible with both 3.3 V and 5 V systems. Connect via solderless STEMMA QT/Qwiic cables or solder to the standard header pins for breadboard use.
Key Features
- Wide Pressure Range – 260 to 1260 hPa absolute pressure measurement
- 24-Bit Resolution – High-precision pressure data at up to 25 Hz
- ±0.2 hPa Accuracy – After calibration (±1 hPa before calibration)
- STEMMA QT / Qwiic – Solderless I2C connectors for easy plug-and-play wiring
- 3.3 V and 5 V Compatible – Onboard voltage regulator and level shifting
- Arduino & CircuitPython Libraries – Ready-to-use libraries with example code
Ideal For
- Weather stations and barometric pressure monitoring
- Altitude estimation and indoor navigation
- Environmental sensing and data logging
- IoT sensor nodes and portable instruments
Package Contents
- 1× Adafruit LPS25 Pressure Sensor Breakout (STEMMA QT)
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- CircuitPython
- A beginner-friendly version of Python designed to run directly on microcontroller boards. If a product supports CircuitPython, you can often program it by copying code files onto the board rather than setting up a more complex toolchain.
- 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.
- 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.
- Qwiic
- Qwiic is a plug-in connector system for I2C devices that uses small 4-pin cables, so you can connect compatible sensors without soldering. It matters because your controller or adapter also needs Qwiic, or you will need a cable or breakout to wire it up.
- STEMMA
- A plug-and-cable connection system used on some maker electronics boards to make wiring simpler. If a product uses STEMMA, you need the matching cable or connector type to plug it in without soldering.
- STEMMA QT
- A small plug-in connector system for I2C boards that lets you connect compatible sensors and controllers without soldering. It matters because it can make wiring faster and less error-prone, especially when adding several small modules to a project.
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