25. Relay Module

25.1. Introduction

It adopts a mini and high-quality HUIKE relay.

microbitplanetX\./images/05025_01.png

25.2. Characteristic


  • Designed in RJ11 connections, easy to plug.

25.3. Specification


Item Parameter
SKU EF05025
Connection RJ11
Type of Connection Digital input
Working Voltage 3.3V

25.4. Outlook


microbitplanetX\./images/05025_02.png

25.5. Quick to Start


Materials Required and Diagram


  • Connect the Relay to J1 port in the Nezha expansion board as the picture shows.

microbitplanetX\./images/05025_03.png

25.6. 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/05025_06.png

Result

  • It switches the current channels by pressing button A or B.

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

../_images/05001_081.png ../_images/05001_091.png ../_images/05025_10.png

Step 2

Reference

from microbit import *
from enum import *
from relay import *

l = RELAY(J1)
l.set_relay(1)

Result

  • Control the off/on of the Relay.

25.8. Relevant File


25.9. Technique File