Proyecto: monitoreo remoto de temperatura vía dashboard web

#include <WiFi.h>
#include <Wire.h>
#include <OneWire.h>
#include <DallasTemperature.h>

#define ONE_WIRE_BUS 2
OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature sensors(&oneWire);

const char* ssid     = "your_SSID";
const char* password = "your_PASSWORD";
const char* host = "api.thingspeak.com";
String apiKey = "your_API_KEY";

void setup() {
  Serial.begin(115200);
  delay(10);
  sensors.begin();

  WiFi.begin(ssid, password);

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

void loop() {
  sensors.requestTemperatures();
  float tempC = sensors.getTempCByIndex(0);
  
  if(WiFi.status()== WL_CONNECTED){ 
    WiFiClient client;
    if (client.connect(host, 80)) {
      String postStr = apiKey;
      postStr += "&field1=";
      postStr += String(tempC);
      postStr += "\r\n\r\n";

      client.print("POST /update HTTP/1.1\n");
      client.print("Host: api.thingspeak.com\n");
      client.print("Connection: close\n");
      client.print("X-THINGSPEAKAPIKEY: "+apiKey+"\n");
      client.print("Content-Type: application/x-www-form-urlencoded\n");
      client.print("Content-Length: ");
      client.print(postStr.length());
      client.print("\n\n");
      client.print(postStr);
    }
    client.stop();
  }
  // Esperar 10 segundos antes del próximo envío
  delay(10000);
}