SparkFun Micro Absolute Digital Barometer – LPS28DFW (Qwiic)

The SparkFun Qwiic LPS28DFW Micro Absolute Digital Barometer offers a unique barometer breakout featuring the LPS28DFW from STMicroelectronics^© in the Qwiic Micro form factor. 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. While the Micro size does not allow for a traditional 0.1″-spaced PTH header for communication, the board does route an interrupt and ground pin to a through-hole 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.

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.

Qwiic Micro is our smallest I²C-supported board form-factor yet! At only 0.75in. by 0.30in. (or 24.65mm by 7.62mm for metric friends), Qwiic Micro is perfect for projects and applications that have space or weight concerns. With just a single Qwiic connector, Micro boards work great alongside the Qwiic Multiport or at the end of a Qwiic daisy chain.

• Qwiic Micro Sized Board (0.75in x 0.30in / 19.05mm x 7.62mm)
• 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
• 1x Horizontal Qwiic Connection Port