from machine import Pin,PWM
import time

servo=PWM(Pin(25))
servo.freq(50)

def mover_servo(angulo):
    duty=int((angulo/180)*(123-26)+26)
    servo.duty(duty)

while True:
    print("servo ")
    mover_servo(0)
    time.sleep(1)
    mover_servo(90)
    time.sleep(1)