from pyb import Servo
import pyb


s1 = Servo(1) # servo on position 1 (P7)
while(1):
    s1.angle(90) # move to 90 degrees
    pyb.delay(600) # 延时 600 毫秒
    s1.angle(60) # move to 45 degrees
    pyb.delay(600) # 延时 600 毫秒
    s1.angle(0) # move to 45 degrees
    pyb.delay(600) # 延时 600 毫秒
    s1.angle(-60) # move to 45 degrees
    pyb.delay(600) # 延时 600 毫秒
    s1.angle(-90) # move to 45 degrees
    pyb.delay(1000) # 延时 1000 毫秒