text: #!/usr/bin/env python
  
  """
  https://pypi.python.org/pypi/paho-mqtt
  
  """
  
  import mosquitto
  import time
  
  #define what happens after connection
  def on_connect(rc):
     print "Connected"
     pass
  
  def on_message(msg):
  	pass
  	
  mqttc = mosquitto.Mosquitto("doorbell_cam")
  
  #define the callbacks
  mqttc.on_message = on_message
  mqttc.on_connect = on_connect
  
  #connect
  mqttc.connect("10.0.0.16", 1883, 60, True)
  
  #subscribe to topic 
  mqttc.subscribe("/home/study/PiLED", 2)
  
  #keep connected to broker
  while mqttc.loop() == 0:
      pass
  
  