from machine import Pin
from time import sleep

s=Pin(2,Pin.IN)
l=Pin(14,Pin.OUT)
m=0
br=0
lbs=0

while True:
    if s.value()==1 and lbs==0:
        if m==0:
            m=1
            br=0.75
        elif m==1:
            m=2
            br=0.5
        elif m==2:
            m=3
            br=0.25
        elif m==3:
            m=4
            br=0.1
        else:
            m=0
            br=0
    lbs=s.value()
    if m==0:
        l.value(0)
    else:
        l.value(1)
        sleep(br)
        l.value(0)
        sleep(br)