LPS33HW Pressure Sensor Breakout Board Adafruit LPS33HW Water Resistant Pressure Sensor Breakout Board allows a user to sense pressure in a damp or caustic environment or know the relative and absolute pressure changes. This Adafruit breakout board is based on the LPS33HW pressure sensor. The device combines protection from water intrusion with support for high-precision relative and absolute measurements. With drivers for CircuitPython, Arduino, and Raspberry Pi, as well as support for I2C or SPI (Arduino-only SPI support), the user can measure pressure in any situation in no time.