16. Rainbow LED Ring(EF05015)
16.1. Introduction
Rainbow LED Ring is based on WS2812B bead that can show the RGB.
16.2. Characteristic
Designed in RJ11 connections, easy to plug.
16.3. 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 |
16.4. Outlook
16.5. Quick to Start
16.5.1. Materials Required and Diagram
Connect the Rainbow LED ring to J1 port in the Nezha expansion board as the picture shows.
16.6. MakeCode Programming
16.6.1. 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.
16.6.2. Step 2
16.6.3. Code as below:
16.6.4. Link
Link: https://makecode.microbit.org/_AU7FyLCLFTMY
You may also download it directly below:
16.6.5. Result
Rainbow LED ring lights on.
16.7. Python Programming
16.7.1. Step 1
Download the package and unzip it: PlanetX_MicroPython
Go to Python editor
16.7.2. Step 2
16.7.3. 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)
np.show()
sleep(100)
16.7.4. Result
Rainbow LED ring lights on after powering on.