Finally, using the following diagram, make the connections and upload the following code:
import timeimport paho.mqtt.client as pahoimport RPi.GPIO as GPIOGPIO.setmode(GPIO.BCM)GPIO.setup(14,GPIO.OUT)broker="broker.hivemq.com"sub_topic = light/controlclient = paho.Client()def on_message(client, userdata, message): print('message is : ') print(str(message.payload)) data = str(message.payload) if data == "on": GPIO.output(3,GPIO.HIGH) elif data == "off": GPIO.output(3,GPIO.LOW)def on_connect(client,userdata, flag, rc): print("connection returned" + str(rc)) client.subscribe(sub_topic)client.connect(broker,port)client.on_connect ...
