import machine
import time

p4 = machine.Pin(4)
servo = machine.PWM(p4,freq=50)
print('before duty setup')
# duty for servo is between 40 - 115
servo.duty(25)
time.sleep(3)
servo.duty(125)
time.sleep(3)
servo.duty(25)
time.sleep(3)
servo.duty(125)
print('after duty setup')

'''
i=40
while True:
  print('turning servo now')
  servo.duty(40)
  i=i+10
  #time.sleep(2)
  #servo.duty(50)
'''