1  # SPDX-FileCopyrightText: 2017 Phillip Burgess for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  import time
 6  from rainbowio import colorwheel
 7  import board
 8  import neopixel
 9  
10  numpix = 5  # Number of NeoPixels
11  pixpin = board.D1  # Pin where NeoPixels are connected
12  hue = 0  # Starting color
13  strip = neopixel.NeoPixel(pixpin, numpix, brightness=0.4)
14  
15  while True:  # Loop forever...
16      for i in range(numpix):
17          strip[i] = colorwheel((hue + i * 8) & 255)
18      strip.write()
19      time.sleep(0.02)  # 20 ms = ~50 fps
20      hue = (hue + 1) & 255  # Increment hue and 'wrap around' at 255