The Adafruit LPS28 Pressure Sensor Breakout features the ST LPS28DFW — a barometric pressure sensor with an extended range up to 4060 hPa, far beyond the ~1260 hPa limit of most competing sensors. This makes it suitable for underwater depth sensing (up to ~40 metres) as well as standard altitude and weather monitoring.

With 24-bit resolution, ±0.5 hPa accuracy at the highest quality settings (less than 1 cm altitude resolution), and up to 200 samples per second, the LPS28 delivers exceptional precision and speed. The sensor includes a metal port for connecting thin tubing and features potting gel rated for up to 10,000 hPa with chemical resistance — check the datasheet for compatibility details.

Key Features

• Extended Pressure Range – Measures from 260 to 4060 hPa (equivalent to ~40 m underwater)
• 24-Bit Resolution – ±0.5 hPa accuracy at highest quality, less than 1 cm altitude precision
• Up to 200 Hz Sample Rate – Fast unfiltered readings for dynamic applications
• Ported Sensor Design – Metal port for connecting tubing to measure remote pressure sources
• Chemical-Resistant Potting – Gel rated to 10,000 hPa with protection against harsh chemicals
• 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 drivers with example code

Ideal For

• Underwater depth sensing for ROVs and submersible robots
• High-precision altitude measurement
• Weather stations and barometric monitoring
• Industrial pressure measurement via tubing

Package Contents

• 1× Adafruit LPS28 (LPS28DFW) Pressure Sensor Breakout (STEMMA QT)