fireworks1.py

   1 from microbit import *
   2 import neopixel
   3
   4 NP_COUNT = 60
   5 BURST_SIZE = 10
   6
   7 np = neopixel.NeoPixel(pin0, NP_COUNT)
   8
   9 BLUE = (0, 0, 64)
  10 RED = (64, 0, 0)
  11 OFF = (0, 0, 0)
  12
  13
  14 def reset(pixels):
  15     for n in range(NP_COUNT):
  16         pixels[n] = OFF
  17     pixels[0] = BLUE
  18     np.show()
  19
  20 def shoot_firework(pixels):
  21     for pixel in range(NP_COUNT - BURST_SIZE):
  22         pixels[pixel] = RED
  23         pixels.show()
  24         sleep(20)
  25         pixels[pixel] = OFF
  26         pixels.show()
  27
  28
  29 reset(np)
  30
  31 while True:
  32     if button_a.is_pressed():
  33         # set off a firework
  34         shoot_firework(np)
  35         reset(np)