RAKwireless RAK1902 LPS22HB Barometric Pressure Sensor Module - I2C Interface, WisBlock Compatible

The RAK1902 module is designed to operate at a typical supply voltage of 3.3V, which is provided directly by the WisBlock base board via the I2C connector. Ensure your microcontroller or base board logic level is compatible with 3.3V I2C communication for proper operation.

The module communicates via the I2C protocol. Connect the VCC, GND, SDA, and SCL pins to your microcontroller's corresponding I2C bus. You can use existing libraries for the LPS22HB sensor (e.g., from STMicroelectronics or Arduino community) to read pressure and temperature data registers. For WisBlock, simply plug the module into a compatible slot (A-F).

Yes, the RAK1902's high-accuracy pressure readings can be used to calculate relative altitude changes based on barometric pressure variations. The conversion requires a known reference pressure (e.g., SEA level pressure) and uses the barometric formula. It is suitable for applications like drone altitude hold, hiking altimeters, and vertical position tracking.

Absolutely. While designed for the WisBlock ecosystem, the module's standard I2C interface makes it compatible with any 3.3V microcontroller platform, including Arduino, Raspberry Pi (using a logic level shifter if needed), ESP32, STM32, and other development boards. You will need to provide 3.3V power and handle the I2C connections directly.