from time import sleep
from machine import Pin,PWM

servo1 = PWM(Pin(14),freq=50)
servo2 = PWM(Pin(27),freq=50)
servo3 = PWM(Pin(26),freq=50)

lista: [25,50,75,100,125]

while(1):


    for i in lista:

      servo1.duty(i)
      sleep(0.5)

    for i in lista:
        
      servo2.duty(i)
      sleep(0.5)

    for i in lista:
        
      servo3.duty(i)
      sleep(0.5)