SparkFun Absolute Digital Barometer - LPS28DFW (Qwiic) Hookup Guide

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Contributors: El Duderino
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Introduction

The SparkFun Absolute Digital Barometer - LPS28DFW (Qwiic) (Standard Size and Micro Size) offer a unique barometer breakout featuring the LPS28DFW from STMicroelectronics©. The LPS28DFW is an absolute barometer with a water-resistant package making it perfect for pressure measurement applications where the sensor is exposed to or even submerged in water1.

SparkFun Absolute Digital Barometer - LPS28DFW (Qwiic)

SparkFun Absolute Digital Barometer - LPS28DFW (Qwiic)

SEN-21221
$16.95
SparkFun Micro Absolute Digital Barometer - LPS28DFW (Qwiic)

SparkFun Micro Absolute Digital Barometer - LPS28DFW (Qwiic)

SEN-21222
$17.95
1

The sensor has two full-scale measurement ranges of 260 - 1260hPa and 260 - 4060hPa with an absolute pressure accuracy of 0.5hPa. The LPS28DFW is composed a piezoresistive pressure sensor with a metal lid and gel encasing to protect the sensing elements from water and other environmental hazards.

In this guide we'll cover the features and specifications of the LPS28DFW and other hardware present on these Qwiic breakouts as well as the Arduino library we have written to interact with the sensor.

1. Important! While the LPS28DFW is protected from water, the rest of the components on these breakouts are not protected by any conformal coating and can be damaged by exposure to liquids. Users who intend to use these breakouts in applications where the board may be exposed to water or other liquids should apply conformal coating to the board prior to use.

Required Materials

To follow along with this guide you will need a microcontroller to communicate with the LPS28DFW. Below are a few options that come Qwiic-enabled out of the box:

SparkFun Thing Plus - ESP32 WROOM (Micro-B)

SparkFun Thing Plus - ESP32 WROOM (Micro-B)

WRL-15663
$22.50
13
SparkFun RedBoard Plus

SparkFun RedBoard Plus

DEV-18158
$21.50
6
SparkFun Thing Plus - Artemis

SparkFun Thing Plus - Artemis

WRL-15574
$22.50
3
SparkFun RedBoard Artemis

SparkFun RedBoard Artemis

DEV-15444
$21.50
10

If your chosen microcontroller is not already Qwiic-enabled, you can add that functionality with one or more of the following items:

SparkFun Qwiic Cable Kit

SparkFun Qwiic Cable Kit

KIT-15081
$8.95
21
SparkFun Qwiic Adapter

SparkFun Qwiic Adapter

DEV-14495
$1.60
4
SparkFun Qwiic Shield for Arduino

SparkFun Qwiic Shield for Arduino

DEV-14352
$7.50
9
SparkFun Qwiic Shield for Thing Plus

SparkFun Qwiic Shield for Thing Plus

DEV-16790
$4.95

You will also need at least one Qwiic cable to connect the breakout to your microcontroller.

Qwiic Cable - 50mm

Qwiic Cable - 50mm

PRT-14426
$0.95
Qwiic Cable - 100mm

Qwiic Cable - 100mm

PRT-14427
$1.50

Qwiic Cable - 500mm

PRT-14429
1 Retired

Qwiic Cable - 200mm

PRT-14428
Retired

Suggested Reading

If you aren't familiar with the Qwiic system, we recommend reading here for an overview.

Qwiic Connect System

We would also recommend taking a look at the following tutorials if you aren't familiar with the concepts covered in them. If you are using one of the Qwiic Shields listed above, you may want to read through their respective Hookup Guides as well before you get started with the SparkFun Absolute Digital Barometer - LPS28DFW (Qwiic).

I2C

An introduction to I2C, one of the main embedded communications protocols in use today.

Serial Terminal Basics

This tutorial will show you how to communicate with your serial devices using a variety of terminal emulator applications.

Qwiic Shield for Arduino & Photon Hookup Guide

Get started with our Qwiic ecosystem with the Qwiic shield for Arduino or Photon.

SparkFun Qwiic Shield for Arduino Nano Hookup Guide

Hookup Guide for the SparkFun Qwiic Shield for Arduino Nano.