---
disqus: ahb0222
GA : G-VF9ZT413CG
---
# micropython WS2812使用紀錄
> [color=#40f1ef][name=LHB阿好伯, 2021/07/16][:earth_africa:](https://www.facebook.com/LHB0222/)
###### tags: `Micropython`

[TOC]

from machine import Pin
from neopixel import NeoPixel
import time

pin = Pin(4, Pin.OUT)   # 將GPIO4設置為輸出以驅動Neopixels
ws2812 = NeoPixel(pin, 12)   # 在GPIO0上以8像素創建NeoPixel驅動程序
ws2812[0] = (50, 50, 50) # 將第一個ws2812設置為白色     #(R,G,B)  0~255
r, g, b = ws2812[0]         # 獲得第一個ws2812顏色
print(r, g, b)

ws2812.write()              # 將數據寫入ws2812
for i in range(12):
    ws2812[i] = (1*i, 1, 1)
    ws2812.write()
    time.sleep(1)

# 填充所有顏色
def fill_color(r, g, b, n):    #n 燈泡數
    for i in range(n):
        ws2812[i] = (r, g, b)
        ws2812.write()
fill_color(10, 10, 10, 12)
time.sleep(1)

## 呼吸燈

from machine import Pin
from neopixel import NeoPixel
import time

pin = Pin(4, Pin.OUT)   # 將GPIO4設置為輸出以驅動Neopixels
ws2812 = NeoPixel(pin, 12)   # 在GPIO0上以8像素創建NeoPixel驅動程序

# 填充所有顏色
def fill_color(r, g, b, n):    #n 燈泡數
    for i in range(n):
        ws2812[i] = (r, g, b)
        ws2812.write()

# 呼吸燈

def breathing_light(r, g, b, n, wait):
    while True:
        for i in range(100):
            fill_color(int(r*i/100), int(g*i/100), int(b*i/100), n)
            time.sleep_ms(wait)
            print(i/100)
        for i in range(100):
            fill_color(int(r*(1-i/100)), int(g*(1-i/100)), int(b*(1-i/100)), n)
            print(1-i/100)
            time.sleep_ms(wait)

breathing_light(50, 50, 50, 12, 10)

## 彩虹燈

from machine import Pin
from neopixel import NeoPixel
import time

pin = Pin(4, Pin.OUT)   # 將GPIO4設置為輸出以驅動Neopixels
ws2812 = NeoPixel(pin, 12)   # 在GPIO0上以8像素創建NeoPixel驅動程序
#  彩虹燈條
def wheel(pos):
    #Input a value 0 to 255 to get a color value.
    #The colours are a transition r - g - b - back to r.
    if pos < 0 or pos > 255:
        return (0, 0, 0)
    if pos < 85:
        return (255 - pos * 3, pos * 3, 0)
    if pos < 170:
        pos -= 85
        return (0, 255 - pos * 3, pos * 3)
    pos -= 170
    return (pos * 3, 0, 255 - pos * 3)



def rainbow_cycle(n, wait):
    for j in range(255):
        for i in range(n):
            rc_index = (i * 256 // n) + j
            ws2812[i] = wheel(rc_index & 255)
            ws2812.write()
            time.sleep_ms(wait)

rainbow_cycle(12,50)   #rainbow_cycle(n, wait) n 燈泡數   wait 間距毫秒數

🌟全文可以至下方連結觀看或是補充

全文分享至

https://www.facebook.com/LHB0222/

https://www.instagram.com/ahb0222/

有疑問想討論的都歡迎於下方留言

喜歡的幫我分享給所有的朋友 \o/

有所錯誤歡迎指教

# [:page_with_curl: 全部文章列表](https://hackmd.io/@LHB-0222/AllWritings)