RAKwireless RAK1902 LPS22HB Barometric Pressure Sensor Module - I2C Interface, WisBlock Compatible
RAKwireless RAK1902 LPS22HB Barometric Pressure Sensor Module - I2C Interface, WisBlock Compatible - Image 2
SKU: SENS-1121
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RAKwireless RAK1902 LPS22HB Barometric Pressure Sensor Module - I2C Interface, WisBlock Compatible

₹689.00 (Inclusive of all taxes)
Out of Stock

The RAK1902 is a compact, low-power barometric pressure sensor module based on the STMicroelectronics LPS22HB MEMS sensor. It provides precise atmospheric pressure and temperature data via I2C interface, designed for seamless integration with RAKwireless WisBlock IoT platforms, Arduino, Raspberry Pi, and other 3.3V/5V microcontroller systems.

Features

  • High-precision LPS22HB MEMS sensor with ±0.1 hPa pressure accuracy
  • Integrated temperature sensing from -40°C to +85°C (±1.5°C accuracy)
  • Ultra-low power operation down to 1 µA in shutdown mode for battery-powered IoT
  • I2C digital interface for easy connection to microcontrollers and WisBlock base boards
  • Compact 10 x 10 mm form factor compatible with WisBlock slot positions A-F

Out of stock

Description

The RAK1902 module integrates the STMicroelectronics LPS22HB, a piezoresistive absolute pressure sensor delivering high-accuracy barometric measurements. The MEMS sensing element and integrated ASIC provide a calibrated digital output over a wide pressure range, suitable for altitude tracking and weather station applications.

Designed specifically for the RAKwireless WisBlock modular IoT system, it connects via a standard I2C bus to the base board, enabling rapid prototyping. The module’s ultra-low current draw makes it ideal for long-duration, solar or battery-powered environmental monitoring deployments when paired with LoRaWAN® or BLE communication cores.

Key Features

  • STMicroelectronics LPS22HB high-performance MEMS pressure sensor core
  • Wide measurement range from 260 hPa to 1260 hPa covers full atmospheric conditions
  • Excellent long-term signal stability and low noise digital output
  • Robust operating temperature range from -40°C to +85°C for harsh environments
  • Modular, solderless design for quick integration into WisBlock IoT platforms
  • High-value build optimized for professional IoT and environmental sensing networks

Applications

  • IoT weather stations and environmental monitoring networks
  • Altitude estimation and tracking for drones and hiking devices
  • Building automation and HVAC system pressure monitoring
  • Portable weather forecasting and meteorological data loggers
  • Battery-powered remote telemetry systems using LoRaWAN® or BLE

Technical Specifications

Manufacturer Part NumberRAK1902
Sensor ChipsetSTMicroelectronics LPS22HB
Pressure Range260 to 1260 hPa
Pressure Accuracy±0.1 hPa (relative)
Temperature Range-40°C to +85°C
Temperature Accuracy±1.5°C
Digital InterfaceI2C
Supply Voltage3.3V (Typical, via WisBlock)
Current Consumption (Active)~12 µA
Current Consumption (Shutdown)~1 µA
Module Dimensions (L x W)10 mm x 10 mm
Module WeightApprox. 10 g
CompatibilityRAKwireless WisBlock Base Board (Slots A-F)

Frequently Asked Questions

What is the operating voltage for the RAK1902 sensor module?

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.

How do I connect and read data from the RAK1902?

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).

Can this sensor be used for altitude measurement?

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.

Is the RAK1902 compatible with platforms other than WisBlock?

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.

Package Includes

  • 1 x RAK1902 LPS22HB Barometric Pressure Sensor Module

Additional Information

Weight 0.01 kg
Dimensions 1 × 1 cm

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