Smart Home Automation

1void loop() {
2  if (!client.connected()) {
3    reconnect();
4  }
5  client.loop();
6
7  long now = millis();
8  if (now - lastMsg > 2000) {
9    lastMsg = now;
10    float h = dht.readHumidity();
11    float t = dht.readTemperature();
12    
13    // Publish to MQTT
14    char tempString[8];
15    dtostrf(t, 1, 2, tempString);
16    client.publish("esp32/temperature", tempString);
17  }
18}

1useEffect(() => {
2  const client = new Paho.MQTT.Client(
3    "broker.hivemq.com",
4    8000,
5    "clientId-" + parseInt(Math.random() * 100, 10)
6  );
7
8  client.onConnectionLost = onConnectionLost;
9  client.onMessageArrived = onMessageArrived;
10
11  client.connect({ onSuccess: onConnect });
12}, []);