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This tutorial teaches the basics on using barometric pressure sensor breakout.

Step 1: Introduction

Barometric Pressure Sensor Breakout Module (BMP180) is used for measuring the absolute pressure of the air around them (barometric pressure). It also does the altitude (height above sea level) and temperature measurement of the surrounding. This sensor has a usual I²C interface. There are five pins on this board, which are VCC, GND, SCL (clock line), SDA (data line) and 3.3V.

Specifications:

  • Input Voltage: DC 3.3V to 5V
  • I²C Interface

Step 2: Pin Definition

Step 3: Sample Hardware Installation

Step 4: Sample Source Code

To get the result,please download the sample source code attached below and upload it into Arduino.

*Kindly download the attached Barometric Pressure Sensor Breakout Library for your own use.

Step 5: Result (1)

The first measurement shown on LCD screen after the BMP180 does the sensing.

Step 6: Result (2)

The second measurement shown on the LCD screen after Button is being pressed for the first time.

Step 7: Result (3)

The third measurement shown on the LCD screen after the Button is being pressed for the second time.

Step 8: Result (4)

The fourth measurement shown on the LCD screen after the Button is being pressed for the third time.

Step 9: Barometric Pressure Sensor Breakout Overview

Video for Barometric Pressure Sensor Breakout Overview

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