18. Push Button Module

18.1. Introduction

The Push button module is able to detect your press action.

../_images/05017_01.png

18.2. Characteristic


  • Designed in RJ11 connections, easy to plug.

18.3. Specification


Item Parameter
SKU EF05017
Connection RJ11
接口类型 数字输出
工作电压 3.3V

18.4. Outlook


../_images/05017_02.png

18.5. Quick to Start


Materials Required and Diagram


  • Connect the Push-button module to J1 port in the Nezha expansion board as the picture shows.

../_images/05017_03.png

18.6. 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/05017_06.png

Result

  • The icons display on the micro:bit accordingly with the order given by pressing button A or B or A+B.

18.7. Python Programming


Step 1

Download the package and unzip it: PlanetX_MicroPython

Go to Python editor

../_images/05001_072.png

We need to add enum.py and button.py for programming. Click “Load/Save” and then click “Show Files (1)” to see more choices, click “Add file” to add enum.py and button.py from the unzipped package of PlanetX_MicroPython.

../_images/05001_081.png ../_images/05001_091.png ../_images/05017_10.png

Step 2

Reference

from microbit import *
from enum import *
from button import *

button = BUTTON(J1)
while True:
    if button.A_is_pressed():
        display.show(Image.HAPPY)
    elif button.B_is_pressed():
        display.show(Image.SAD)
    elif button.AB_is_pressed():
        display.show(Image.COW)
        sleep(500)

Result

  • The icons display on the micro:bit accordingly with the order given by pressing button A or B or A+B.

18.8. Relevant File


18.9. Technique File