from machine import Pin
import time

# Set up the IR sensor and LED
ir_sensor = Pin(2, Pin.IN)  # GPIO 15 as input pin for IR sensor
led = Pin(1, Pin.OUT)  # GPIO 2 as output pin for the LED
counter = 0  # Initialize a counter variable

# Function to monitor the IR sensor and control the LED
def count_objects():
    global counter
    previous_state = ir_sensor.value()  # Initial state of the sensor

    while True:
        current_state = ir_sensor.value()
        
        # Check if the state has changed from high to low (object detected)
        if previous_state == 1 and current_state == 0:
            counter += 1
            print(f"Object detected! Count: {counter}")
            led.on()  # Turn on the LED when an object is detected
        else:
            led.off()  # Turn off the LED when no object is detected
        
        previous_state = current_state
        time.sleep(0.1)  # Short delay to avoid bouncing issues

# Run the object counting function
try:
    count_objects()
except KeyboardInterrupt:
    print("Counting stopped.") 
    led.off()  # Turn off the LED when the program is interrupted