Adafruit BMP388 - Precision Barometric
Pressure and Altimeter
PRODUCT ID: 3966
Bosch has been a leader in barometric pressure sensors, from
the BMP085. BMP180, and BMP280... now we've got the next generation,
the Adafruit BMP388 Precision Barometric Pressure sensor. As you would expect,
this sensor is similar to its earlier versions but even better. The BMP388 has
better precision than ever, which makes it excellent for environmental sensing
or as a precision altimeter. It can even be used in either I2C and SPI
configurations.
The BMP3xx is the next-generation of sensors from Bosch, and is the upgrade
to the BMP280 - 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 8 Pascals, which translates to about ± 0.5
meter of altitude (compare to the BMP280's 12 Pascal/ ±1 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 ±0.5°C accuracy.
Nice sensor right? So we made it easy for you to get right into your next project.
The surface-mount sensor is soldered onto a PCB and comes with a 3.3V
regulator and level shifting so you can use it with a 3V or 5V logic
microcontroller without worry. Check out the Arduino library to get data out in
under 10 minutes!
TECHNICAL DETAILS
Product Dimensions: 21.6mm x 16.6mm x 3.0mm / 0.9" x 0.7" x 0.1"
Product Weight: 1.2g / 0.0oz
https://www.adafruit.com/product/3966 10‐23‐18
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