smarthome-presence-detect/camera/camera.py

#!/usr/bin/env python2

import time
import RPi.GPIO as GPIO

IR_PIN = 3

GPIO.setmode(GPIO.BOARD)
GPIO.setup(IR_PIN, GPIO.OUT)

try:
    while True:
        print "Gpio Low"
        GPIO.output(IR_PIN, GPIO.LOW)
        time.sleep(20)
        print "Gpio High"
        GPIO.output(IR_PIN, GPIO.HIGH)
        time.sleep(20)
except Exception as e:
    print e
finally:
    GPIO.cleanup()