BlynkPirDHT11

#include <Blynk.h>

#define BLYNK_PRINT Serial

#include <SPI.h>
#include <Ethernet.h>
#include <BlynkSimpleEthernet.h>
#include <DHT.h>
//#include <SimpleTimer.h>

char auth[] = "Token: dd86e26...........";
int sensorPin = 5; // Set up a PIR sensor pin
int pirState = LOW;
int val = 0;
int relayPin = 2;
bool relayState = false;

#define DHTPIN 3 // What digital pin we're connected to

#define DHTTYPE DHT11 // DHT 11
//#define DHTTYPE DHT22 // DHT 22, AM2302, AM2321
//#define DHTTYPE DHT21 // DHT 21, AM2301

DHT dht(DHTPIN, DHTTYPE);
BlynkTimer timer;

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;
  }
  else {
    // 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()
{
  pinMode(sensorPin, INPUT);
  pinMode(relayPin, OUTPUT);
  Serial.begin(9600);
  Blynk.begin(auth);

  dht.begin();
  timer.setInterval(1000L, sendSensor);
  timer.setInterval(50L, pirSensor);

}

void pirSensor() {

  if (digitalRead(sensorPin) == HIGH && !relayState) {
    // If Motion detected and relay state is off

    relayState = true;
    digitalWrite(relayPin, HIGH); // Turn Relay ON
    Serial.println("Relay is ON");
  }
  else if (digitalRead(sensorPin) == LOW) {

    relayState = false;
    digitalWrite(relayPin, LOW); // Turn Relay OFF
    Serial.println("Relay is OFF");
  }
}


void loop() {

  Blynk.run();
  timer.run();
}