LaunchPadPart3

import board
import time
import digitalio

N = 11 
print('test')

ledred = digitalio.DigitalInOut(board.GP13)
ledred.direction = digitalio.Direction.OUTPUT
 # defines the red LED as an output and sets its pin as GP13 on the Pico.

ledgreen = digitalio.DigitalInOut(board.GP18)
ledgreen.direction = digitalio.Direction.OUTPUT
# defines the green LED as an output and sets its pin as GP18 on the Pico.

buttonpin = digitalio.DigitalInOut(board.GP0)
buttonpin.direction = digitalio.Direction.INPUT
buttonpin.pull = digitalio.Pull.UP
# defines the button as an input and sets its pin to GP0 on the Pico, it also tells it to pull up which means it will give a false value when depressed.

while True:

    if buttonpin.value == False:  
# when button value is false aka. pressed then it will run the while loop.
 
        while True:

            N -= 1 

            print(N)

            if N > 0:  

                time.sleep(.5)
                ledred.value = True
                time.sleep(.5)
                ledred.value = False
# Blinks the LED once every second make sure to sleep it for.5 seconds if you do it every second it will blink every 2 seconds.

            if N <= 0:
                print('LIFT OFF')
                ledgreen.value = True
                time.sleep(2.5)
                break
# Turns on the green LED if N is less than or equal to 0, the light stays on for 2.5 seconds then turns off.