Adafruit LPS35HW Water Resistant Pressure Sensor

Sometimes you need to sense pressure in a damp environment. And sometimes you need to know the relative changes in pressure as well as the absolute pressure. For the times you need to do both (or either), the LPS35HW is the pressure sensor for you.

VIN
Power input for the breakout. Adafruit Learn states the onboard regulator accepts 3 to 5 VDC and converts it down for the 3.3 V sensor.
Type · powerVoltage · 3-5 VDC input
3Vo
3.3 V output from the onboard regulator. Adafruit Learn states up to 100 mA can be drawn.
Type · powerVoltage · 3.3 V output, up to 100 mA
GND
Common ground for power and logic.
Type · groundVoltage · 0 V
SCK
I2C clock pin, connect to the microcontroller I2C clock line.
Type · signalVoltage · logic level follows host power used on VIN
SDI
I2C data pin, connect to the microcontroller I2C data line.
Type · signalVoltage · logic level follows host power used on VIN

Start wiring

SPI · 3-5 VDC input · 3.3 V output, up to 100 mA

Confirm the data interface matches your host board.

Module pins: VIN, 3Vo, GND, SCK, SDI, SDO, CS, INT. Schematik maps them to your board in the app.

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Pin	Type	Function	Voltage
VIN	power	Power input for the breakout. Adafruit Learn states the onboard regulator accepts 3 to 5 VDC and converts it down for the 3.3 V sensor.	3-5 VDC input
3Vo	power	3.3 V output from the onboard regulator. Adafruit Learn states up to 100 mA can be drawn.	3.3 V output, up to 100 mA
GND	ground	Common ground for power and logic.	0 V
SCK	signal	I2C clock pin, connect to the microcontroller I2C clock line.	logic level follows host power used on VIN
SDI	signal	I2C data pin, connect to the microcontroller I2C data line.	logic level follows host power used on VIN
SDO	signal	SPI data output / address-related pad on the breakout. For I2C use, Adafruit Learn says to leave SDO disconnected.
CS	signal	SPI chip-select pad. For I2C use, Adafruit Learn says to leave CS disconnected.
INT	signal	Interrupt output pad labelled on the product pinout image.

Pinout

Start wiring

Air quality

Temp and humidity

Environment sensors

Light and colour