25. Relay Module(EF05025)#

25.1. Introduction#

It adopts a mini and high-quality HUIKE relay.


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#


25.5. Quick to Start#

25.5.1. Materials Required and Diagram#

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


25.6. MakeCode Programming#

25.6.1. 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.

25.6.2. Step 2#

25.6.3. Code as below:#


25.6.5. Result#

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

25.7. Python Programming#

25.7.1. 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

25.7.2. Step 2#

25.7.3. Reference#

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

l = RELAY(J1)

25.7.4. Result#

  • Control the off/on of the Relay.

25.8. Relevant File#

25.9. Technique File#