Adafruit LPS33HW Water Resistant Pressure Sensor - STEMMA QT

Sometimes, sensing pressure in damp or caustic environments is necessary. The LPS33HW pressure sensor addresses these needs, offering high precision relative and absolute measurements with water and chemical resistance. Designed to protect electronic components from harsh environments, its sensing element is encased in a waterproof gel within a ceramic package.

Compatible with CircuitPython, Arduino, and Raspberry Pi, the LPS33HW supports I2C and SPI (currently SPI for Arduino only). It provides 24-bit pressure data and 16-bit temperature data, boasting an accuracy of +/- 0.1% hPa. Capable of measuring 260 to 1260 hPa, it withstands pressure up to 20 times its range.

The sensor includes features like an adjustable data rate and a low-pass filter to reduce signal noise. Its onboard temperature compensation ensures stable readings despite temperature variations. It also has a metal port with a lip for O-ring installation, though caution is advised against applying shear force.

This sensor is mounted on a breakout PCB with support circuitry for easy use with 3.3V (Feather/Raspberry Pi) or 5V (Arduino/Metro328) logic levels. Supporting I2C bus through SparkFun Qwiic-compatible STEMMA QT connectors, it connects easily to your microcontroller without soldering.

Please note, while the sensor is water and chemical-resistant, the breakout board is not. Waterproof epoxy is required for wet environments. Check the tutorial for more details on assembly, wiring, and sample code for Arduino and CircuitPython.