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Adafruit BMP280 I2C or SPI Barometric Pressure and Altitude Sensor

Adafruit BMP280 I2C or SPI Barometric Pressure and Altitude Sensor

Regular price $0.00 $16.95 Sale

Key Features:

  • New in 2020 - Now STEMMA QT Compatible - an easy way to plug & play without soldering!
  • BMP280: an environmental sensor with temperature, barometric pressure
  • Great for all sorts of weather sensing and can even be used in both I2C and SPI!
  • Low altitude noise of 0.25m and the same fast conversion time compared to BMP085/BMP180/BMP183

This precision sensor from Bosch is the best low-cost, precision sensing solution for measuring barometric pressure with ±1 hPa absolute accuracy, and temperature with ±1.0°C accuracy. Because pressure changes with altitude, and the pressure measurements are so good, you can also use it as an altimeter with ±1 meter accuracy.

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 or SPI. 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.

Nice sensor right? The surface-mount sensor is soldered onto a custom made PCB in the STEMMA QT form factor, making them easy to interface with. The STEMMA QT connectors on either side are compatible with the SparkFun Qwiic I2C connectors. This allows you to make solderless connections between your development board and the BMP280 or to chain it with a wide range of other sensors and accessories using a compatible cable. We’ve of course broken out all the pins to standard headers and added a voltage regulator and level shifting so allow you to use it with either 3.3V or 5V systems such as the Metro M4 or Arduino Uno respectively.

Item Specifics
Size: 19.2mm x 17.9mm x 2.9mm / 0.8" x 0.7" x 0.1"
Weight: 1.3g / 0.0oz