The BMP390 is a 24-bit absolute barometric pressure sensor, with the features of ultra-small form factor, low power consumption, and low noise. This digital high-performance sensor is ideal for a variety of altitude-tracking applications. Supports both I2C / SPI interfaces, I2C interface by default, compatible with 3.3V /5V voltage levels.; Onboard BMP390 sensor for measuring barometric pressure, altitude and temperature; Supports I2C communication, I2C address configurable, with I2C bus cascading support. Supports SPI communication, enabled via CS pin (I2C bus by default).; Onboard voltage translator, compatible with 3.3V /5V level; It can be easily integrated into projects such as GPS modules, wearables devices, audible devices, and drones, suitable for applications such as accurate altimeters, environment monitoring, and IoT projects.