import machine
import utime

# Define GPIO pins
IR_SENSOR_PIN = machine.Pin(16, machine.Pin.IN)  # IR Sensor (Input)
RED_LED_PIN = machine.Pin(17, machine.Pin.OUT)   # Red LED (Obstacle detected)
GREEN_LED_PIN = machine.Pin(18, machine.Pin.OUT) # Green LED (No obstacle)

while True:
    if IR_SENSOR_PIN.value():  # Obstacle detected
        print("Obstacle Detected!")
        RED_LED_PIN.value(1)  # Turn ON Red LED
        GREEN_LED_PIN.value(0)  # Turn OFF Green LED
    else:  # No obstacle
        print("No Obstacle")
        RED_LED_PIN.value(0)  # Turn OFF Red LED
        GREEN_LED_PIN.value(1)  # Turn ON Green LED
    
    utime.sleep(0.5)  # Delay of 500ms