LinkNode Pressure Sensor Module
Introduction
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.
Specification
- 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
Wiring
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
Install Library
* download library : Adafruit_BMP280.rar
Place the BMP280 library folder your ”arduinosketchfolder/libraries/ folder”.
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.
