text: from gpiozero import RGBLED
  from time import sleep
  led = RGBLED(red=17, green=18, blue=19)
  delay = 0.02
  
  while True:
      for x in range(100):
          led.red = x/100
          sleep(delay)
      for x in range(100, -1, -1):
          led.red = x/100
          sleep(delay)
  
      for x in range(100):
          led.green = x/100
          sleep(delay)
      for x in range(100, -1, -1):
          led.green = x/100
          sleep(delay)
  
      for x in range(100):
          led.blue = x/100
          sleep(delay)
      for x in range(100, -1, -1):
          led.blue = x/100
          sleep(delay)
  
  