#include <WiFi.h>
#include <WiFiClientSecure.h>
#include <PubSubClient.h>

const char* ssid = "ваш wifi ssid";
const char* password =  "ваш wifi пароль";
const char* mqttServer = "mqtt.technoponica.com";
const int mqttPort = 8883;
const char* mqttUser = "test";
const char* mqttPassword = "test";

WiFiClientSecure espClient;
PubSubClient client(espClient);

void setup() {

  Serial.begin(115200);
  WiFi.begin(ssid, password);

  Serial.println("Connecting to WiFi");
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");

  Serial.println("Connected to the WiFi network");

  client.setServer(mqttServer, mqttPort);

  while (!client.connected()) {
    Serial.println("Connecting to MQTT...");

    if (client.connect("ESP32Client", mqttUser, mqttPassword )) {

      Serial.println("connected");

    } else {

      Serial.print("failed with state ");
      Serial.println(client.state());
      delay(2000);

    }
  }

  client.publish("technoponica/test", "Hello from ESP32");
}

void loop() {
  client.loop();
}