import time
from machine import Pin

print("Hello, Mr Inglese, how was your weekend?")

LedRED = Pin(2,Pin.OUT)
LedORANGE = Pin(3,Pin.OUT)
LedGREEN = Pin(8,Pin.OUT)

myDelay = 0.2
goBackwards = False

while 1:
    LedRED.value(1)
    time.sleep(myDelay)
    LedRED.value(0)
    
    LedORANGE.value(1)
    time.sleep(myDelay)
    LedORANGE.value(0)
    
    LedGREEN.value(1)
    time.sleep(myDelay)
    LedGREEN.value(0)
    
    if goBackwards:
        myDelay -= 0.05
    else:
        myDelay += 0.05
     
    if myDelay > 1.0:
        goBackwards = True

    if myDelay < 0.05:
        goBackwards = False

    print("MyDelay is",myDelay)