from machine import Pin
from utime import sleep

led_red = machine.Pin(15, machine.Pin.OUT)
led_amber = machine.Pin(14, machine.Pin.OUT)
led_green = machine.Pin(13, machine.Pin.OUT)
button = machine.Pin(16, machine.Pin.IN,machine.Pin.PULL_DOWN)
buzzer = machine.pin(12, machine.PIN.OUT)

while true :
    if button.value(1) == true:
        led_red.value(1)
        buzzer.value(1)
        utime.sleep(0.2)
        buzzer.value(1)
        utime.sleep(0.2)
        led_red.value(1)
        utime.sleep(5)
        led_amber.value(1)
        utime.sleep(2)
        led_red.value(0)
        led_amber.value(0)
        led_green.value(1)
        utime.sleep(5)
        led_green.value(0)
        led_amber.value(1)
        utime.sleep(5)
        led_amber.value(0)