import RPi.GPIO as GPIO
import time
# Set GPIO mode
GPIO.setmode(GPIO.BOARD)
# Define GPIO pins for laser and photodiode
LASER_PIN = 11
PHOTODIODE_PIN = 12
ALARM_PIN = 13
# Set up GPIO pins
GPIO.setup(LASER_PIN, GPIO.OUT)
GPIO.setup(PHOTODIODE_PIN, GPIO.IN)
GPIO.setup(ALARM_PIN, GPIO.OUT)
# Function to activate the laser
def activate_laser():
GPIO.output(LASER_PIN, GPIO.HIGH)
# Function to deactivate the laser
def deactivate_laser():