Adafruit BMP390L - Precision Barometric Pressure and Altimeter - STEMMA QT / Qwiic

The BMP390L is the next-generation of sensors from Bosch and is the upgrade to the BMP280 and BMP388 - with a low-altitude noise as low as 0.1m and the same fast conversion time. And like the previous BMP280, you can use 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.

This sensor has a relative accuracy of +-3 Pascals, which translates to about +-0.25 meters of altitude (compare to the BMP280's +-12 Pascal/+-1 meter and BMP388's +-8 Pascal/+-0.5 meter). The datasheet sort of implies they intend this sensor to be used for drones and quadcopters, to keep altitude stable, but you could also use this for wearables or any project that wants to track height-above-sea-level. Note that for absolute height you'll still need to enter in the barometric pressure at sea level if the weather changes, but that's true of every altimeter sensor that uses pressure. You can also measure temperature with +-0.5C accuracy.

STEMMA QT / Qwiic 4-pin 1mm Pitch White Female Connector Cable 150mm Long - Both Side can be purchased seperately.

• BMP388 datasheet
• BMP390 datasheet
• BMP388 STEMMA QT Fritzing object in the Adafruit Fritzing Library
• BMP388 Original Version Fritzing object in the Adafruit Fritzing Library
• BMP390 Fritzing object in the Adafruit Fritzing Library
• EagleCAD PCB files on GitHub
• Adafruit BMP388 and BMP390 - Precision Barometric Pressure and Altimeter