Adafruit BMP280 I2C or SPI Barometric Pressure & Altitude Sensor

Bosch has stepped up their game with their BMP280 sensor, an environmental sensor with temperature, barometric pressure that is the next generation upgrade to the BMP085/BMP180/BMP183. This sensor is great for all sorts of weather sensing and can even be used in both I2C and SPI!

Vin
Input to the onboard regulator; Adafruit says power the breakout with 3-5VDC at the microcontroller logic level.
Type · powerVoltage · 3-5VDC input
3Vo
3.3V output from the onboard regulator; Adafruit says up to 100mA can be drawn.
Type · powerVoltage · 3.3V output, up to 100mA
GND
Common ground for power and logic.
Type · groundVoltage · 0V
SCK / SCL
SPI clock input; also I2C clock line SCL according to the Adafruit pinout page.
Type · signalVoltage · 3-5V logic safe, use logic level on Vin
SDO
SPI serial data out from the BMP280 to the processor.
Type · signalVoltage · 3-5V logic safe, use logic level on Vin

Start wiring

I2S · I2C · SPI · 3-5VDC input · 3.3V output, up to 100mA

Confirm the data interface matches your host board.

Module pins: Vin, 3Vo, GND, SCK / SCL, SDO, SDI / SDA, CS. Schematik maps them to your board in the app.

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