Description

(Pressure, Altitude, Temperature)

 

The BMP388 digital air pressure sensor is a very compact, low power and low noise 24-bit sensor. This absolute air pressure sensor is based on proven sensing principles for pressure and temperature measurements. The BMP388 sensor offers outstanding design flexibility and is specifically designed for a wide range of height tracking applications. The sensor offers a best-in-class temperature coefficient offset (TCO) between 0°C and 65°C for accurate height measurement over a wide temperature range. The digital sensor has low power consumption of 3.4μA at 1Hz and a wide measurement range from 300hPa to 1250hPa.

 

BMP388 Technical Data

The following table shows the key features of the BMP388 sensor. For more information, consult the datasheet.

Operation range	300 to 1250 hPa (pressure) -40 to +85ºC (temperature)
Interface	I2C and SPI
Average typical current consumption	3.4 µA @ 1Hz
Absolute accuracy pressure (typ.) P=900 …1100 hPa (T=25 … 40°C)	±0.5 hPa
Relative accuracy pressure (typ.) P=900…1100 hPa (T=25 … 40°C)	±0.08 hPa
Noise in pressure (lowest bandwidth, highest resolution)	0.03 Pa
Maximum sampling rate	200 Hz

BMP388 Pinout

Here’s the pinout of the BMP388 module we’re using—it might be slightly different for other modules.

VIN	Powers the sensor (5V)
3V3	Powers the sensor (3V3)
GND	Common GND
SCK	SCL pin for I2C communication SCK pin for SPI communication
SDO	SDO (MISO) pin for SPI communication
SDI	SDI (MOSI) pin for SPI communication SDA pin for I2C communication
CS	Chip select pin for SPI communication
INT	Interrupt pin

BMP388 Interface

As mentioned previously, the BMP388 sensor supports I2C and SPI interfaces.

BMP388 I2C

To use I2C communication protocol, use the following pins (for the Arduino Uno—if you’re using another model, check its I2C pins):

BMP388	Arduino
SDI (SDA)	A4
SCK (SCL)	A5

BMP388 SPI

To use SPI communication protocol, use the following pins (for the Arduino Uno—if you’re using another model, check its SPI pins):

BMP388	Arduino
SCK	Pin 13
SDI (MOSI)	Pin 11
SDO (MISO)	Pin 12
CS (Chip Select)	Pin 10

Explore more from our collection.