根据光线强弱，自动开关窗帘

from microbit import *
import robotbit

robotbit.servo(0,0)
while True:
    light = pin1.read_analog()
    if light < 200:
        robotbit.servo(0,180)
        sleep(1000)
    robotbit.servo(0,0)

import robotbit
from microbit import *

while True:
    light=pin1.read_analog()
    #读取光敏传感器传递过来的模拟量数据
    #数值越大说明光照度越小,也是就是越暗
    if light > 400:
        if isOpen:
            isOpen=False
            robotbit.stepper(0,360)#光照小于设定的值，关闭窗帘
    else:
        if isOpen==False:
            isOpen=True
            robotbit.stepper(0,-360)#光照大于设定的值，打开窗帘

display.show(Image.ALL_ARROWS,delay=1000,loop=True)