WS2811B RGB LED RPi

 1 import time
 2 import board
 3 import neopixel
 4 pixels = neopixel.NeoPixel(board.D18, 4) #4 PIXEL
 5 #time.sleep(1)
 6 #pixels[0] = (200, 0, 0)
 7 #time.sleep(1)
 8 while (1):
 9     time.sleep(0.5)
10     for x in range(0, 4):
11         pixels[x] = (10, 10, 10)
12         time.sleep(0.2)
13     for x in range(0, 4):
14         pixels[x] = (50, 0, 0)
15         time.sleep(0.2)