16. Rainbow LED Ring(EF05015)#

16.1. Introduction#

Rainbow LED Ring is based on WS2812B bead that can show the RGB.


16.3. Characteristic#

Designed in RJ11 connections, easy to plug.

16.4. Specification#

Item Parameter
SKU EF05015
Connection RJ11
Type of Connection Digital input
Working Voltage 3.3V
Core IC WS2812 3535 Encapsulation
Number of Pixels 8

16.5. Outlook#


16.6. Quick to Start#

16.6.1. Materials Required and Diagram#

Connect the Rainbow LED ring to J1 port in the Nezha expansion board as the picture shows.


16.7. MakeCode Programming#

16.7.1. 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.

16.7.2. Step 2#

16.7.3. Code as below:#


16.7.5. Result#

Rainbow LED ring lights on.

16.8. Python Programming#

16.8.1. Step 1#

Download the package and unzip it: PlanetX_MicroPython

Go to Python editor

16.8.2. Step 2#

16.8.3. Reference#

from microbit import *
import neopixel
from enum import *
from random import randint
np = neopixel.NeoPixel(J1, 8)
while True:
    for pixel_id in range(0, len(np)):
        red = randint(0, 60)
        green = randint(0, 60)
        blue = randint(0, 60)
        np[pixel_id] = (red, green, blue)

16.8.4. Result#

Rainbow LED ring lights on after powering on.

16.9. Relevant File#

16.10. Technique File#