Adafruit
Adafruit LPS35HW Water Resistant Pressure Sensor
The Adafruit LPS35HW is a water-resistant barometric pressure and temperature sensor from ST. The sensing element is housed in a ceramic package with waterpr...
The Adafruit LPS35HW is a water-resistant barometric pressure and temperature sensor from ST. The sensing element is housed in a ceramic package with waterproof gel protection, making it safe to use in damp and humid environments like outdoor weather stations.
With 24-bit pressure data and 16-bit temperature readings, the LPS35HW delivers ±0.1% hPa accuracy across a 260–1260 hPa range. Unlike the ported LPS33HW variant, this non-ported model is designed for general wet-environment use. It can withstand up to 20× its measurement range and features adjustable data rates with a built-in low-pass filter for clean readings.
Key Features
- Water Resistant Sensor – Ceramic package with waterproof gel for use in damp and humid conditions
- 24-Bit Pressure Data – ±0.1% hPa accuracy from 260 to 1260 hPa
- 16-Bit Temperature Data – Onboard temperature compensation for stable readings
- Adjustable Data Rate & Low-Pass Filter – Tune measurement speed and remove signal noise
- Pressure Tolerance – Withstands up to 20× the measurement range
- I2C and SPI – I2C for easy wiring; SPI supported in Arduino
- 3.3 V and 5 V Compatible – Onboard voltage regulator and level shifting
Ideal For
- Outdoor weather stations in wet or humid conditions
- Barometric pressure and altitude monitoring
- High-humidity environmental sensing
- IoT sensor nodes exposed to moisture
Package Contents
- 1× Adafruit LPS35HW Water Resistant Pressure Sensor Breakout
- 1× Strip of header pins
Resources
Jargon buster
Plain-language definitions for the technical terms used above.
- breakout
- A breakout is a small circuit board that makes a tiny or hard-to-solder component easier to connect to with standard pins. It matters because this OLED module can be wired into a microcontroller project without needing to solder directly to the display’s fine contacts.
- I2C
- I2C is a two-wire communication bus used by many sensors and small modules. It matters because several I2C devices can share the same two wires, but each device needs a compatible address and your controller must support I2C.
- IoT
- Short for Internet of Things, meaning physical devices that connect to networks or the internet to send data or be controlled remotely. It matters if you want projects such as connected sensors, remote controls or classroom data-logging activities.
- PCB
- A printed circuit board is a rigid board with copper tracks that connect electronic parts without loose wires. For this kit, the PCBs also form the airplane shape, so they are both the circuit base and part of the finished model.
- SPI
- A fast serial communication bus often used for displays, memory cards, and sensors. It matters because SPI devices need specific pins for clock and data, plus a separate chip-select line for each device.
- Temperature compensation
- Temperature compensation means the sensor adjusts its readings to reduce errors caused by changes in water temperature. This matters for field monitoring because ponds, rivers, and tanks can vary in temperature throughout the day and across seasons.
- Tolerance
- Tolerance tells you how far the real resistance value may be from the printed value. A 1% resistor is useful when a circuit needs more predictable behaviour than a looser 5% or 10% part.
Find this product in
Brands
Related Tutorials
Free guides on learn.littlebird.com.au
