1  # SPDX-FileCopyrightText: 2019 Erin St Blaine for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  """ Simple FancyLED example for NeoPixel strip
 6  """
 7  
 8  import board
 9  import neopixel
10  import adafruit_fancyled.adafruit_fancyled as fancy
11  
12  num_leds = 17
13  
14  # Declare a Water Colors palette
15  palette = [fancy.CRGB(0, 214, 214), # blues and cyans
16             fancy.CRGB(0, 92, 160),
17             fancy.CRGB(0, 123, 255),
18             fancy.CRGB(0, 68, 214)]
19  
20  # Declare a Fire Colors palette
21  #palette = [fancy.CRGB(0, 0, 0),       # Black
22  #             fancy.CHSV(1.0),           # Red
23  #              fancy.CRGB(1.0, 1.0, 0.0), # Yellow
24  #              0xFFFFFF]                  # White
25  
26  # Declare a NeoPixel object on pin D6 with num_leds pixels, no auto-write.
27  # Set brightness to max because we'll be using FancyLED's brightness control.
28  pixels = neopixel.NeoPixel(board.D1, num_leds, brightness=1.0,
29                             auto_write=False)
30  
31  offset = 0  # Positional offset into color palette to get it to 'spin'
32  
33  while True:
34      for i in range(num_leds):
35          # Load each pixel's color from the palette using an offset, run it
36          # through the gamma function, pack RGB value and assign to pixel.
37          color = fancy.palette_lookup(palette, offset + i / num_leds)
38          color = fancy.gamma_adjust(color, brightness=0.25)
39          pixels[i] = color.pack()
40      pixels.show()
41  
42      offset += 0.02  # Bigger number = faster spin