25. Relay Module(EF05025)#

25.1. Introduction#

It adopts a mini and high-quality HUIKE relay.


25.3. Characteristic#

Designed in RJ11 connections, easy to plug.

25.4. Specification#

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

25.5. Outlook#


25.6. Quick to Start#

25.6.1. Materials Required and Diagram#

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


25.7. MakeCode Programming#

25.7.1. Step 1#

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


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.


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.

25.7.2. Step 2#

25.7.3. Code as below:#


25.7.5. Result#

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

25.8. Python Programming#

25.8.1. Step 1#

Download the package and unzip it: PlanetX_MicroPython

Go to Python editor


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

25.8.2. Step 2#

25.8.3. Reference#

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

l = RELAY(J1)

25.8.4. Result#

Control the off/on of the Relay.

25.9. Relevant File#

25.10. Technique File#