import paho.mqtt.client as mqtt RGB_TOPIC = 'IoT/RgbLedStripe/ColorCommand' client = mqtt.Client(client_id = 'test1') client.connect("172.16.2.16", 1883, 60) i = 0 while True: client.loop() i += 1 if i == 300: i = 0 client.publish(RGB_TOPIC, "{0} 0 0 255".format(i)) client.publish(RGB_TOPIC, "{0} 0 255 0".format(i+1)) client.publish(RGB_TOPIC, "{0} 255 0 0".format(i+2)) client.publish(RGB_TOPIC, "{0} 0 0 0".format(i))