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[高级教程] 用python编写“micro:bit环形RGB灯扩展板”彩虹色渐变特效

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本帖最后由牧之于 2018-8-6 15:21 编辑

使用硬件：micro:bit环形RGB灯扩展板

DFRobot Micro:bit Circular RGB Expansion board

使用编程软件：uPyCraft V1.0
用python编写“micro:bit环形RGB灯扩展板”彩虹色渐变特效图3

彩虹色渐变函数rainbow(t)的定义及其调用：
[mw_shl_code=python,true]from microbit import *
import neopixel
np = neopixel.NeoPixel(pin2, 24)

def rainbow(t):
  r=100
  g=0
  b=0
  for c in range(0,50):
g=g+2
for i in range(0,24):
   np = (r,g,b)
np.show()
sleep(t)
  for c in range(0,50):
r=r-2
for i in range(0,24):
   np = (r,g,b)
np.show()
sleep(t)
  for c in range(0,50):
b=b+2
for i in range(0,24):
   np = (r,g,b)
np.show()
sleep(t)
  for c in range(0,50):
g=g-2
for i in range(0,24):
   np = (r,g,b)
np.show()
sleep(t)
  for c in range(0,50):
r=r+2
for i in range(0,24):
   np = (r,g,b)
np.show()
sleep(t)
  for c in range(0,50):
b=b-2
for i in range(0,24):
   np = (r,g,b)
np.show()
sleep(t)

while True:
  rainbow(50)[/mw_shl_code]

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