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# Adafruit LPS25 Pressure Sensor - STEMMA QT / Qwiic - LPS25HB

**Type:** Product page · **SKU:** ADA4530 · **Brand:** [Adafruit](https://core-electronics.com.au/brands/adafruit-australia)
**Page:** https://core-electronics.com.au/adafruit-lps25-pressure-sensor-stemma-qt-qwiic-lps25hb.html ([markdown](https://core-electronics.com.au/adafruit-lps25-pressure-sensor-stemma-qt-qwiic-lps25hb.html.md))

We live on a planet with an atmosphere, a big ocean of gaseous air that keeps everything alive - and that atmosphere is constantly bouncing off of us, exerting air...

## Pricing

- **Price:** $17.25 (inc GST) — $15.68 AUD, exc GST
- **Quantity discounts:** 10+ $15.21 (exc GST) · 50+ $14.90 (exc GST)

## Availability & dispatch

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## Description

Adafruit live on a planet with an atmosphere, a big ocean of gaseous air that keeps everything alive - and that atmosphere is constantly bouncing off of us, exerting air pressure on everything around us. But, how much air is in the atmosphere, bearing down on us?

This absolute pressure sensor, **ST LPS25HB** can quickly and easily measure this air pressure, useful when you want to know about the weather (are Adafruit in a low pressure or high pressure system?) or to determine altitude, as the air thins out the higher Adafruit get above sea level. For example, at sea level, the official pressure level is **1013.25 hPa.** You can use this sensor to measure the current pressure where you are right now, to compare.

The **LPS25** has a wide measurement range of **260-1260 hPa** with 24-bit pressure data measurements that can be read up to **25 times a second (Hz)**, you can be confident that you always have an up to date and precise measurement. It's pretty dang accurate too, with the ability to measure **within 0.2 hPa** after calibration (± 1 hPa before calibration).

These days, helpful little sensors like the LPS25 are often quite little and tend to come in surface-mount packages that make them tricky to use with breadboards. With that in mind, Adafruit have taken the LPS25 and put it on a breakout board with level shifting circuitry and a voltage regulator. This means that not only can you use it with a breadboard, but you can use it with a wide range of devices that have either a **3.3V logic level**, like a Raspberry Pi or CircuitPython compatible Metro M4 Express, **or with a 5V logic level** device like a Metro 328 or Arduino Uno.

Furthermore, Adafruit have included [SparkFun Qwiic](https://www.sparkfun.com/qwiic) compatible [STEMMA QT](https://learn.adafruit.com/introducing-adafruit-stemma-qt) connectors for the I2C bus so you don't even need to solder! All you need to do is plug in a [compatible cable](https://core-electronics.com.au/search/?q=stemma%20qt%20cable), wire it up to your device using one of Adafruit's wiring diagrams and you're ready to write some code to start reporting measurements.

To make the coding easier, [Adafruit have written **libraries for Arduino** and **CircuitPython or Python** along with accompanying **example code**](https://learn.adafruit.com/adafruit-lps25-pressure-sensor), so all you have to do is gather your supplies and follow Adafruit's instructions and you can know just how much air is sloshing around in your vicinity.

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/a/d/ada4530-1.jpg)