from machine import Pin
import time

# Define the pins for each LED
red_pin = Pin(1, Pin.OUT)
yellow_pin = Pin(5, Pin.OUT)
green_pin = Pin(10, Pin.OUT)

# Define the time delay for each traffic light state in seconds
red_delay = 5
yellow_delay = 2
green_delay = 5

# Define the traffic light sequence
def traffic_light_sequence():
    while True:
        # Red light
        red_pin.on()
        yellow_pin.off()
        green_pin.off()
        time.sleep(red_delay)
               
        # Green light
        red_pin.off()
        yellow_pin.off()
        green_pin.on()
        time.sleep(green_delay)

        # Blink the green light
        for i in range(3):
            green_pin.on()
            time.sleep(0.5)
            green_pin.off()
            time.sleep(0.5)
        
        # Yellow light
        red_pin.off()
        yellow_pin.on()
        green_pin.off()
        time.sleep(yellow_delay)

        

# Run the traffic light sequence
traffic_light_sequence()