from machine import Pin
from utime import sleep
red = Pin(1, Pin.OUT)
yellow = Pin(5, Pin.OUT)
green = Pin(9, Pin.OUT)

def blink(led, Z):
   for _ in range(Z):
        led.toggle()
        sleep(0.5)
        led.toggle()
        sleep(0.5)
N = 0
P = 0
p = 1
while True:
    N = p + P
    blink(red,N)
    p = P
    P = N
    
    N = p + P
    blink(yellow,N)
    p = P
    P = N

    N = p + P
    blink(green,N)
    p = P
    P = N
# Red = Positive
# Black = negative