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Crowtail- BMP280 Barometer Sensor


The Crowtail-BMP280 Barometer Sensor is a breakout board for Bosch BMP280 high-precision and low-power digital barometer.It can be used to measure temperature and atmospheric pressure accurately. It can be connected to a microcontroller with I2C. As the atmospheric pressure changes with altitude, it can also measure approximate altitude of a place. We have also provided highly abstracted library to make this product easier to use.

Model: CRT00289B

Crowtail- BMP280 Barometer Sensor.jpg


  • Smaller footprint, lower power consumption, lower noise measurements, lower RMS noise
  • Higher resolutions for pressure and temperature, higher measuring rate
  • Easy-to-use Crowtail Compatible Interface
  • Can be used as an altimeter with accuracy of ±1 meter


  • Supply Voltage: 5V or 3.3V
  • Current Consumption: 0.6 mA
  • Barometric Pressure Measure
 Range: 300 – 1100 hPa
 Accuracy: ±1.0 hPa
  • Temperature Measurement
 Range: -40 to 85
 Accuracy: ±1
  • Interface: I2C
  • Crowtail Port: I2C
  • Dimensions(mm):20.0(L)x20.0(W)x9.8(H)


1. Plug it onto the IIC port of Crowtail - Base Shield using a Crowtail cable.

2.Plug the Crowtail - Base Shield onto Arduino.

3. Connect Arduino to PC by using a USB cable.


4.You can find development library here

5. Copy and paste code below to a new Arduino sketch, and upload it to your Arduino

#include "BMP280.h"
#include <Wire.h>

BMP280 bmp280;

void setup()
    Serial.println("Device error!");

void loop()
  float pressure;

  //get and print temperatures
  Serial.print("Temp: ");
  Serial.println("C"); // The unit for  Celsius because original arduino don't support speical symbols

  //get and print atmospheric pressure data
  Serial.print("Pressure: ");
  Serial.print(pressure = bmp280.getPressure());

  //get and print altitude data
  Serial.print("Altitude: ");

  Serial.println("\n");//add a line between output of different times.


5.When you upload the code complete,you can see the result via the serial port debug window