Adafruit Industries Adafruit Industries BMP280 I2C/SPI Barometric Pressure & Altitude Sensor
The BMP280 is the next-generation of sensors from Bosch, and is the upgrade to the BMP085/BMP180/BMP183 - with a low altitude noise of 0.25m and the same fast conversion time. It has the same specifications, but can use either I2C orSPI. For simple easy wiring, go with I2C. If you want to connect a bunch of sensors without worrying about I2C address collisions, go with SPI.
Adafruit Industries BMP280 I2C/SPI Barometric Pressure & Altitude Sensor
Usually ships in 5-7 business days. Limited availability. May not be in stock at time of order. No back orders.