1  # SPDX-FileCopyrightText: 2020 Liz Clark for Adafruit Industries
 2  #
 3  # SPDX-License-Identifier: MIT
 4  
 5  import time
 6  import board
 7  import touchio
 8  import neopixel
 9  from adafruit_led_animation.animation.pulse import Pulse
10  from adafruit_led_animation.color import (
11      RED,
12      YELLOW,
13      ORANGE,
14      GREEN,
15      TEAL,
16      CYAN,
17      BLUE,
18      PURPLE,
19      MAGENTA,
20      GOLD,
21      PINK,
22      AQUA,
23      JADE,
24      AMBER
25  )
26  
27  #  NeoPixel pin
28  pixel_pin = board.A3
29  #  number of NeoPixels
30  pixel_num = 68
31  
32  #  NeoPixels setup
33  pixels = neopixel.NeoPixel(pixel_pin, pixel_num, brightness=0.5, auto_write=False)
34  
35  #  animation setup
36  pulse = Pulse(pixels, speed=0.1, color=RED, period=5)
37  
38  #  two cap touch pins
39  touch_left = board.A1
40  touch_right = board.A2
41  
42  #  cap touch setup
43  bolt_left = touchio.TouchIn(touch_left)
44  bolt_right = touchio.TouchIn(touch_right)
45  
46  #  NeoPixel colors for animation
47  colors = [RED, YELLOW, ORANGE, GREEN, TEAL, CYAN, BLUE,
48            PURPLE, MAGENTA, GOLD, PINK, AQUA, JADE, AMBER]
49  
50  #  variable for color array index
51  c = 0
52  
53  #  debounce states for cap touch
54  bolt_left_state = False
55  bolt_right_state = False
56  
57  while True:
58      #  run animation
59      pulse.animate()
60  
61      #  debounce for cap touch
62      if not bolt_left.value and not bolt_left_state:
63          bolt_left_state = True
64      if not bolt_right.value and not bolt_right_state:
65          bolt_right_state = True
66  
67      #  if the left bolt is touched...
68      if bolt_left.value and bolt_left_state:
69          print("Touched left bolt!")
70          #  increase color array index by 1
71          c += 1
72          #  reset debounce state
73          bolt_left_state = False
74      #  if the right bolt is touched...
75      if bolt_right.value and bolt_right_state:
76          print("Touched right bolt!")
77          #  decrease color array index by 1
78          c -= 1
79          #  reset debounce state
80          bolt_right_state = False
81      #  if the color array index is bigger than 13...
82      if c > 13:
83          #  reset it to 0
84          c = 0
85      #  if the color array index is smaller than 0...
86      if c < 0:
87          #  reset it to 13
88          c = 13
89      #  update animation color to current array index
90      pulse.color = colors[c]
91      time.sleep(0.01)