LinkNode Pressure Sensor Module

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The module provides precise measurement of barometric pressure and temperature in the environment. The air pressure can be measured in a range from 300 hPa to 1100hPa with ±1.0 hPa absolute accuracy. As for the temperature the sensor works perfectly For temperatures between - 40 and 85 with an accuracy of ±1. Owing to its high accuracy on measuring the pressure, and the pressure changes with altitude, we can calculate the altitude with ± 1 meter accuracy, which makes it a precise altimeter as well.

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  • Supply Voltage: 3.3V
  • Barometric Pressure Measure
    • Range: 300 – 1100 hPa
    • Accuracy: ±1.0 hPa
  • Temperature Measurement
    • Range: -40 to 85
    • Accuracy: ±1
  • Interface: I2C
  • Dimensions: 20mm x 20mm


The module is connected to the base shield J3 or J10/J11/J12 (IIC Interface) :

Sensor IIC --> LinkNode D1 IIC

IIC address settings (SJ1) :

Short G : 0x76 (default)

Short V : 0x77

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Install Library

* download library : Adafruit_BMP280.rar

Place the BMP280 library folder your ”arduinosketchfolder/libraries/ folder”.

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Load Demo

Open “File->Examples->Adafruit_BMP280_Library->bmp280test” and upload to your LinkNode D1, Open the Arduino IDE serial monitor ( BAUD 9600 ) to see sensor data output.

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