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This precision sensor from Bosch is the best low-cost, precision sensing solution for measuring barometric pressure with +-1 hPa absolute accuraccy, and temperature with +-1.0C 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 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.
Key Features:
Resources
Datasheets, PCB CAD files, Fritzing object and more available in the product tutorial
Bosch Sensortec
SKU: 135-BMP280
