Arduino - Stazione Meteo e Dati su Telegram

#include <BME280.h>
#include <WiFi.h>
#include <PubSubClient.h>

const char* ssid = "NOME_RETE_WIFI"; // Sostituire con il nome della tua rete WiFi
const char* password = "PASSWORD_RETE_WIFI"; // Sostituire con la password della tua rete WiFi
const char* botToken = "BOT_TOKEN"; // Sostituire con il token del tuo bot Telegram
const char* chatId = "ID_CHAT"; // Sostituire con l'ID della chat Telegram a cui inviare i dati

WiFiClient espClient;
PubSubClient client(espClient);

BME280 sensor;

void setup() {
  Serial.begin(115200);

  sensor.begin(0x76);

  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }
  Serial.println("");
  Serial.println("WiFi connected!");

  client.setServer("mqqt.telegram.org", 1883);
  client.setCallback(callback);
}

void loop() {
  if (!client.connected()) {
    reconnect();
  }

  float temperature = sensor.readTemperatureC();
  float humidity = sensor.readHumidity();
  float pressure = sensor.readPressurePa();

  String message = "Temperatura: " + String(temperature) + "°C\n" +
                "Umidità: " + String(humidity) + "%RH\n" +
                "Pressione: " + String(pressure) + "hPa";

  client.publish(chatId, message.c_str());

  delay(10000); // Inviare i dati ogni 10 secondi
}

void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived on topic: ");
  Serial.print(topic);
  Serial.print(". Message: ");
  for (int i = 0; i < length; i++) {
    Serial.print((char)payload[i]);
  }
  Serial.println();
}

void reconnect() {
  // Loop until we connect
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Create a random client ID
    String clientId = "ESP8266Client-";
    clientId += String(random(0xFFFFFF));

    if (client.connect(clientId.c_str())) {
      Serial.println("connected");
      // Once connected, subscribe to our topic
      client.subscribe(chatId);
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      delay(5000);
    }
  }
}