from machine import Pin, PWM
from time import sleep

R = PWM(Pin(23),freq=50)
G = PWM(Pin(22),freq=50)
B = PWM(Pin(21),freq=50)
push = Pin(14,Pin.IN,Pin.PULL_UP)

def tiempo (x):
    R.duty(int(x))
    G.duty(int(x))
    B.duty(int(x))

lista = ["0","300","600","900","1023"]

n=0

while(1):
    if push.value()==0:
        tiempo(lista[n])
        n=n+1
        if n>4:
            n=0
        sleep(0.3)
        while push.value()==0:
            sleep(0.2)