from machine import Pin,PWM
from time import sleep
servo1=PWM(Pin(15))
servo2=PWM(Pin(20))
servo2.freq(50)
servo1.freq(50)
def set_angle1(angle):
    duty=int(1000+(angle/180)*8000)
    servo1.duty_u16(duty)
def set_angle2(angle):
    duty=int(1000+(angle/180)*8000)
    servo2.duty_u16(duty)
while True:
    for angle in range(0,181,1):
        set_angle1(angle)
        set_angle2(angle)
        sleep(0.05)
    sleep(0.3)
    for angle in range(180,-1,-1):
        set_angle1(angle)
        set_angle2(angle)
        sleep(0.05)