from machine import Pin as pin ,PWM
import utime , time 
servo = PWM(pin(2))
servo.freq(50)

  
def angle (d,f):
    
    d1 = ((d * 65)/1.8) + 1500
    f1 = ((f * 65)/1.8) + 1500
    servo.duty_u16(int(d1))
    utime.sleep(1)
    servo.duty_u16(int(f1))
    utime.sleep(1)


while 1==1 :
    angle(0,180)
    time.sleep(1)
    angle(180,0)
    time.sleep(1)