ESP8266 Nodemcu controling 5 devices trug Blynk app

[ffullgraff]

//#define BLYNK_PRINT Serial    // Comment this out to disable prints and save space
#include <SPI.h>
#include <ESP8266WiFi.h>
#include <BlynkSimpleEsp8266.h>
#include <SimpleTimer.h>
#include <DHT.h>

const int buttonPin = 15;     // the number of the pushbutton pin
const int ledPin =  13;      // the number of the LED pin

// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "c664ad5b69c2xxxxxxxxxxxxxxxxxxxx";

// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "XXXX";
char pass[] = "XXXXXXXXXXXXX";

#define DHTPIN 2          // Conectar a D4 del ESP8266 ARDUINO
int buttonState = 0;         // variable for reading the pushbutton status
// Uncomment whatever type you're using!
#define DHTTYPE DHT11     // DHT 11
//#define DHTTYPE DHT22   // DHT 22, AM2302, AM2321
//#define DHTTYPE DHT21   // DHT 21, AM2301

DHT dht(DHTPIN, DHTTYPE);
SimpleTimer timer;

// This function sends Arduino's up time every second to Virtual Pin (5).
// In the app, Widget's reading frequency should be set to PUSH. This means
// that you define how often to send data to Blynk App.
void sendSensor()
{
  float h = dht.readHumidity();
  float t = dht.readTemperature(); // or dht.readTemperature(true) for Fahrenheit

  if (isnan(h) || isnan(t)) {
    Serial.println("Failed to read from DHT sensor!");
    return;
  }
  // You can send any value at any time.
  // Please don't send more that 10 values per second.
  Blynk.virtualWrite(V5, h);
  Blynk.virtualWrite(V6, t);
}

void setup()
{
  Serial.begin(9600); // See the connection status in Serial Monitor
  Blynk.begin(auth, ssid, pass);

  dht.begin();
// initialize the LED pin as an output:
  pinMode(ledPin, OUTPUT);
  // initialize the pushbutton pin as an input:
  pinMode(buttonPin, INPUT);
  // Setup a function to be called every second
  timer.setInterval(1000L, sendSensor);
}

void loop()
{
  // read the state of the pushbutton value:
  buttonState = digitalRead(buttonPin);

  // check if the pushbutton is pressed. If it is, the buttonState is HIGH:
  if (buttonState == HIGH) {
    // turn LED on:
    digitalWrite(ledPin, HIGH);
  } else {
    // turn LED off:
    digitalWrite(ledPin, LOW);
  }
  
  
  Blynk.run(); // Initiates Blynk
  timer.run(); // Initiates SimpleTimer
}

[Gunner]

You didn’t mention anything about what your project does/accomplishes and you forgot to format your posted code.

[Blynk_Coeur]

just blink LEDs

[scropion86]

Humidity is 21% how anybody can achieve that , is the number actual reading or just for demonstration ?

[ffullgraff]

Not because Arduino will burn ! with 500 ma

[ffullgraff]

Demostration…