from machine import Pin
from utime import sleep

red = Pin(15, Pin.OUT)
green = Pin(10,Pin.OUT)
blue = Pin(9,Pin.OUT)

#Clear common cathode RGB LED

red.value(0)
green.value(0)
blue.value(0)

while True:
    red.toggle()
    sleep(1)
    red.toggle()

    green.toggle()
    sleep(1)
    green.toggle()

    blue.toggle()
    sleep(1)
    blue.toggle()

    sleep(1)