SparkFun Pressure Sensor - BMP384 (Qwiic)

• SparkFun Pressure Sensor - BMP384 (Qwiic)
• Offers a great option for monitoring pressure near water
• Feature the BMP384 digital pressure sensor
• Provides excellent accuracy across a wide measurement range
• Uses a gel-filled cavity to provide extra resistance to liquids
• Supply Voltage Range: 1.65 - 3.6 V

The SparkFun Pressure Sensor - BMP384 (Qwiic) features the BMP384 digital pressure sensor from Bosch. The BMP384 excels at high-resolution measurements (up to 24-bit) and uses a gel-filled cavity to provide extra resistance to liquids (water and other chemicals) making it a great option for monitoring pressure in a wide variety of environments though the sensor is not water-proof.

The BMP384 provides excellent accuracy across a wide measurement range (300hPa to 1250hPa and -40 to +85°C) on a footprint that uses the Qwiic Standard size (1.0in. x 1.0in.). The sensor also features a configurable oversampling setting, a FIFO buffer for storing up to 73 measurements, as well as a low pass filter so users can customize the performance based on the application's requirements. The Qwiic Pressure Sensor communicates over I²C by default, utilizing our handy Qwiic system so no soldering is required to connect it to the rest of your system. However, we still have broken out 0.1”-spaced pins in case you prefer to use a breadboard and also supports using the BMP384 over SPI.

The BMP384 has three operating modes: Sleep Mode, Normal Mode and Forced Mode. While in Sleep Mode the sensor is idle and consumes ~2µA. While in Normal Mode, the sensor automatically cycles between measurement and standby periods and consumes ~700µA at peak current draw during measurements. Forced Mode allows direct control of measurements to wake the sensor from Sleep Mode, take a single-shot measurement, and return the device to Sleep Mode.