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LPS25HB Pressure/Altitude Sensor Carrier with Voltage Regulator

by Pololu
SKU 2926
£5.99 inc VAT
£4.99 ex VAT
6 in stock.

More available in 5-7 days.
Available for backorder (more info)

This carrier for ST’s LPS25HB digital barometer measures pressures from 260 mbar to 1260 mbar (26 kPa to 126 kPa) with absolute accuracy down to ±0.2 mbar (0.02 kPa) and typical RMS noise of 0.01 mbar (1 Pa) in high-resolution mode. These pressures can easily be converted to altitudes. The board has a 3.3 V linear regulator and integrated level shifters that allow it to work over an input voltage range of 2.5 V to 5.5 V, and the 0.1″ pin spacing makes it easy to use with standard solderless breadboards and 0.1″ perfboards. The sensor offers I²C and SPI interfaces.

 Technical Details:

  • Interface: I2C, SPI
  • Minimum Operating Voltage: 2.5V
  • Maximum Operating Voltage: 5.5V
  • Measurement Range: 26 kPa to 126 kPa
  • Supply Current: 2mA


  • VDD: Regulated 3.3V output. Almost 150mA is available to power external components
  • VIN: This is the main 2.5 to 5.5V power supply connection. Your I2C or SPI control source must also share a common ground with this board
  • GND: The ground (0V) connection for your power supply. Your I2C or SPI control source must also share a common ground with this board
  • SDA/SDI/SDO: Level-shifted I2C data line and SPI data in line (also doubles as SDO in 3-wire mode): HIGH is VIN, LOW is 0V
  • SCL/SPC: Level-shifted I2C/SPI clock line: HIGH is VIN, LOW is 0V
  • SDO/SA0: SPI data out line in 4 wire mode: HIGH is VDD, LOW is 0V. 
  • CS: SPI enable. Pulled up to VDD to enable I2C communication by default; drive low to begin SPI communication
  • INT1_DRDY: Programmable interrupt/data-ready indicator, a 3.3V logic-level output