> **Source:** Core Electronics is an Australian maker-electronics retailer and manufacturer based in Newcastle, NSW, run by a team of makers and educators. We design and manufacture our own product lines (PiicoDev, CE originals) and are official retailers for iconic maker and industrial brands including Raspberry Pi, Arduino, Adafruit, SparkFun and DFRobot. Orders ship Australia-wide from our Newcastle warehouse. Prices are in AUD and include GST. Pricing, stock and dispatch on this page are generated from the store's live catalog. Full machine-readable index: https://core-electronics.com.au/llms.txt # SparkFun Absolute Digital Barometer - LPS28DFW (Qwiic) **Type:** Product page · **SKU:** SEN-21221 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia) **Page:** https://core-electronics.com.au/sparkfun-absolute-digital-barometer-lps28dfw-qwiic.html ([markdown](https://core-electronics.com.au/sparkfun-absolute-digital-barometer-lps28dfw-qwiic.html.md)) The SparkFun Qwiic LPS28DFW Absolute Digital Barometer offers a unique barometer breakout featuring the LPS28DFW from STMicroelectronics©... ## Pricing - **Price:** $37.95 (inc GST) — $34.50 AUD, exc GST - **Quantity discounts:** 5+ $33.46 (exc GST) · 25+ $32.77 (exc GST) · 100+ $31.39 (exc GST) ## Availability & dispatch - Available with a lead time — expect dispatch between Aug 25 and Aug 31. ## How to buy - **Build a cart:** compose `https://core-electronics.com.au/cart/link?items=SEN-21221:1` (comma-separated SKU:qty pairs) and share the link. Opening it shows a confirmation page with live pricing and stock before anything is added to the cart. - **Verify the cart first:** fetch `https://core-electronics.com.au/cart/link/SEN-21221:1.md` for live line prices (inc & exc GST, quantity discounts applied), stock and dispatch estimates, and totals. Append `/to/{AU-postcode}` (or `/to/{country-code}:{postcode}`) before `.md` for delivery options and prices to that destination. Unknown, retired, or out-of-stock SKUs are flagged. (Query form `cart/link.md?items=...` also works but some robots parsers refuse query strings here.) - **Checkout** is completed on-site and includes a captcha at the payment step. Share the cart link; checkout takes it from there. - **Search the catalogue:** `https://core-electronics.com.au/search/{query}.md` (URL-encode the query; pages 2-3 at `search/{query}/{page}.md`; `search.md?q=` also works) - **Payment methods, purchase orders, policies and contact details:** https://core-electronics.com.au/llms.txt ## Description The SparkFun Qwiic LPS28DFW Absolute Digital Barometer offers 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 water. The Qwiic system allows for integration into your I2C system with no soldering required. This Qwiic breakout also includes 0.1"-spaced PTH pins connected to the sensor's communication interface and interrupt pins for applications that require a traditional soldered connection. 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 of a piezoresistive pressure sensor with a metal lid and gel encasing to protect the sensing elements from water and other environmental hazards. **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 a conformal coating to the board or place it in a sealed container prior to use.*The [SparkFun Qwiic Connect System](https://www.sparkfun.com/qwiic) 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.* [Get Started with the SparkFun Qwiic LPS28DFW Absolute Digital Barometer Guide](https://learn.sparkfun.com/tutorials/sparkfun-absolute-digital-barometer---lps28dfw-qwiic-hookup-guide)### Features - Supply voltage range - 1.7 - 3.6V - Current consumption - One shot mode: ~1.7 - 32.2µA - Continuous mode: ~2.5 - 783.8µA - I2C interface (Qwiic-enabled) - I2C addresses - 0x5C (Default), 0x5D - Water-resistant sensor package - Dual pressure ranges - Mode 1: 260 - 1260hPa - Mode 2: 260 - 4060hPa - Interrupt features - Data-ready - FIFO flags - Pressure threshold - Output data rate range - 1 - 200Hz - 2x Qwiic Horizontal Connectors ### Documents - [Schematic](https://core-electronics.com.au/attachments/localcontent/SparkFun_Absolute_Digital_Barometer-LPS28DFW_Qwiic_976982de466.pdf) - [Eagle Files](https://core-electronics.com.au/attachments/localcontent/SparkFun_Absolute_Digital_Barometer-LPS28DFW_Qwiic_19452b88295.zip) - [Board Dimensions](https://core-electronics.com.au/attachments/localcontent/SparkFun_Absolute_Digital_Barometer-LPS28DFW_Qwiic_Dimensions_1509209c8fe.png) - [Datasheet](https://core-electronics.com.au/attachments/localcontent/LPS28DFW-Datasheet_21453c8bdb9.pdf) (LPS28DFW) - [Hookup Guide](https://learn.sparkfun.com/tutorials/sparkfun-absolute-digital-barometer---lps28dfw-qwiic-hookup-guide) - [Qwiic Info Page](https://www.sparkfun.com/qwiic) - [LPS28DFW Arduino Library](https://github.com/sparkfun/SparkFun_LPS28DFW_Arduino_Library) - [GitHub Hardware Repo](https://github.com/sparkfun/SparkFun_Qwiic_Barometer_LPS28DFW) ## Images - [Product image 1](https://core-electronics.com.au/media/catalog/product/S/E/SEN-21221-1.jpg)