from machine import Pin,PWM
from time import sleep


servo=PWM(Pin(19),freq=50)
lista=[25,50,75,100,125,100,75,50]
push = Pin(14,Pin.IN,Pin.PULL_UP)
n=i=0
while(1):
    # DETECCION
    if push.value()==0:
        sleep(0.03)
        n = n+1
        if n>2:
            n=0
        while(push.value()==0):
            sleep(0.001)

    # OPCIONES
    if n==0:
        t=0.8      
    elif n==1:
        t=0.5
    else:
        t=0.2
    
    servo.duty(lista[i])
    sleep(t)
    i = i+1
    if i>7:
        i=0