from machine import Pin
from time import sleep


led_r = Pin(4, Pin.OUT)
led_g = Pin(0, Pin.OUT)
led_b = Pin(2, Pin.OUT)



while True:

    led_r.on()   #red
    led_g.off()
    led_b.off()

    sleep(1.5)

    led_r.off()  #green
    led_g.on()
    led_b.off()

    sleep(1.5)

    led_r.off()  #blue
    led_g.off()
    led_b.on()

    sleep(1.5)

    led_r.on()   #yellow
    led_g.on()
    led_b.off()

    sleep(1.5)

    led_r.off()  #cyan
    led_g.on()
    led_b.on()

    sleep(1.5)

    led_r.on()   #magenta
    led_g.off()
    led_b.on()

    sleep(1.5)

    led_r.on()   #white
    led_g.on()
    led_b.on()

    sleep(1.5)