1  # SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
 2  # SPDX-License-Identifier: MIT
 3  """
 4  CircuitPython DotStar red, green, blue, brightness control example.
 5  """
 6  import time
 7  import board
 8  from rainbowio import colorwheel
 9  import adafruit_dotstar
10  
11  dot = adafruit_dotstar.DotStar(board.DOTSTAR_CLOCK, board.DOTSTAR_DATA, 1)
12  dot.brightness = 0.3
13  
14  
15  def rainbow(delay):
16      for color_value in range(255):
17          dot[0] = colorwheel(color_value)
18          time.sleep(delay)
19  
20  
21  while True:
22      rainbow(0.02)