23. BME280 Air Pressure Sensor

23.1. Introduction

BME280 Pressure Sensor is an electric brick integrating temperature sensor, air pressure sensor and humidity sensor onboard. We can use it to calculate the altitude according to the measured air pressure.

microbitplanetX\./images/05022_01.png

23.2. Characteristic


  • Designed in RJ11 connections, easy to plug.

23.3. Specification


Item Parameter
SKU EF05022
Connection RJ11
Type of Connection IIC
Working Voltage 3.3V
Core IC BME280

23.4. Outlook


microbitplanetX\./images/05022_02.png

23.5. Quick to Start


Materials Required and Diagram


  • Connect the BME280 air pressure sensor to the IIC port and the OLED to the other IIC port in the Nezha expansion board as the picture shows.

microbitplanetX\./images/05022_03.png

23.6. MakeCode Programming


Step 1

Click “Advanced” in the MakeCode drawer to see more choices.

../_images/05001_04.png

We need to add a package for programming, . Click “Extensions” in the bottom of the drawer and search with “PlanetX” in the dialogue box to download it.

../_images/05001_05.png

Note: If you met a tip indicating that the codebase will be deleted due to incompatibility, you may continue as the tips say or build a new project in the menu.

Step 2

Code as below:

../_images/05022_06.png

Result

  • The values of the temperature, moisture, air pressure and the altitude in the current environment display on the OLED screen.

23.7. Relevant File


23.8. Technique File