A high quality Bosch temperature and pressure sensor, that can be used in either I2C or SPI configurations.
Bosch has been a leader in barometric pressure sensors, from the BMP085. BMP180, BMP280, BMP388, BMP390... now we've got the next generation!
The BMP58x is the upgrade to the BMP2xx and BMP3xx - with a low-altitude noise as low as 1cm (0.08Pa) 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 an astonishing relative accuracy of±0.4 Pascals at 900-1100 hPa and 25°C, which translates to about ±3.3 centimeters of altitude (compare to the BMP280's ±12 Pascal/±1 meter and BMP388's ±8 Pascal/±0.5 meter). The typical absolute accuracy is ±30Pa or about 2.5 meters. Check the datasheet for how temperature and altitude can affect the absolute/relative accuracy.
The BMP581 is software/firmware compatible with the BMP580 but has better accurate/precision measurements . It's also more expensive! So pick this when accuracy is more important than cost.
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 ±0.5°C accuracy.
Nice sensor right? So Adafruit made it easy for you to get right into your next project. The surface-mount sensor is soldered onto a custom made PCB with a 3.3V regulator and level shifting so you can use it with a 3V or 5V logic microcontroller without worry. It's in the STEMMA QT form factor, making it 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 BMP58x or to chain it with a wide range of other sensors and accessories using a compatible cable.QT Cable is not included, but we have a variety in the shop.
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Primary Guide: Adafruit BMP580, BMP581, and BMP585 - Temperature and Pressure Sensor
The BMP5xx have better precision than ever, which makes them excellent for environmental sensing or as a precision altimeter. It can even be used in either I2C and SPI configurations. - See All Guides