LEDstripbreathe.py

   1 import machine, neopixel, time
   2 np=neopixel.NeoPixel(machine.Pin(0), 96)
   3
   4 n=np.n
   5
   6 position=0
   7 brightness=0.5
   8
   9 def fade(np):
  10     for i in range(0, 4 * 256, 8):
  11         for j in range(n):
  12             if (i // 256) % 2 == 0:
  13                 val = i & 0xff
  14             else:
  15                 val = 255 - (i & 0xff)
  16             np[j] = (val, val, 0)
  17         np.write()
  18
  19 def bounce(np):
  20     for i in range(4 * n):
  21         for j in range(n):
  22             np[j] = (0, 0, 128)
  23         if (i // n) % 2 == 0:
  24             np[i % n] = (0, 128, 128)
  25         else:
  26             np[n - 1 - (i % n)] = (0, 128, 128)
  27         np.write()
  28         time.sleep_ms(60)
  29
  30 def clear():
  31     for i in range(n):
  32         np[i] = (0, 0, 0)
  33     np.write()
  34
  35 def wheel(pos):
  36     if pos < 85:
  37         return(pos*3,255-pos*3,0)
  38     elif pos <170:
  39         pos-=85
  40         return(255-pos*3,0,pos*3)
  41     else:
  42         pos -=170
  43         return(0,pos*3,255-pos*3)
  44
  45 def loop():
  46     global position, brightness
  47
  48     for i in range(np.n):
  49         hue=int(i*(255/np.n)+position)%256
  50         color=wheel(hue)
  51         color=tuple(int(val*brightness) for val in color)
  52         np[(i+position)%np.n]=color
  53     np.write()
  54     position=(position +1)% np.n
  55     #print(position)
  56     time.sleep_ms(200)
  57
  58 def antiloop():
  59     global position, brightness
  60
  61     for i in range(np.n):
  62         hue=int(-i*(255/np.n)-position)%256
  63         color=wheel(hue)
  64         color=tuple(int(val*brightness) for val in color)
  65         np[(i-position)%np.n]=color
  66     np.write()
  67     position=(position +1)% np.n
  68     #print(position,"anti")
  69     time.sleep_ms(200)
  70
  71
  72 while True:
  73     for i in range(np.n):
  74         loop()
  75     for i in range(np.n):
  76         antiloop()