import machine
from machine import Pin, time_sleep_ms as delay

# Define LED pins
redLed = machine.Pin(15, machine.Pin.OUT)
amberLed = machine.Pin(0, machine.Pin.OUT)
greenLed = machine.Pin(2, machine.OUT)

while True:
    # Green light on for a longer duration
    greenLed.on()
    redLed.off()
    amberLed.off()
    delay(5000)  # Green for 5 seconds

    # Amber light on shortly before red
    amberLed.on()
    delay(2000)  # Amber for 2 seconds

    # Red light on
    redLed.on()
    amberLed.off()
    greenLed.off()
    delay(3000)  # Red for 3 seconds