#define BLYNK_TEMPLATE_ID "TMPL3mlJLECJK"
#define BLYNK_TEMPLATE_NAME "DHT11"
#define BLYNK_AUTH_TOKEN "LgDx_nfdu7temFlGreLGotEbugU72noZ"
#include<WiFi.h>
#include<WiFiClient.h>
#include<BlynkSimpleEsp32.h>
#include"DHT.h"
DHT dht(13,DHT22);
#define TRIG_PIN 17
#define ECHO_PIN 16
#define BUZZER_PIN 4
char auth[]=BLYNK_AUTH_TOKEN;
char ssid[]="Wokwi-GUEST";
char pass[]="";
int swich=0;
BLYNK_WRITE(V3)
{
  int value=param.asInt();
  digitalWrite(12,value);

}
int led=12;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  Blynk.begin(auth,ssid,pass);
  pinMode(5, INPUT);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(BUZZER_PIN, OUTPUT);
  pinMode(12, OUTPUT);
  dht.begin();

}

void loop() {
    float t=dht.readTemperature();
    int h=dht.readHumidity();
    Serial.print("TEMP=");
    Serial.println(t);
    Serial.print("HUMD=");
    Serial.println(h);
    Blynk.virtualWrite(V0,t);
    Blynk.virtualWrite(V1,h);
    delay(100);


  swich=digitalRead(5);
  if(swich==HIGH)
  {
    Blynk.virtualWrite(V2,HIGH);
    delay(500);
  }
  else
  {
    Blynk.virtualWrite(V2,LOW);
    delay(500);
  }


  long duration, distance;
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  duration = pulseIn(ECHO_PIN, HIGH);
  distance = duration * 0.034 / 2;
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
  Blynk.virtualWrite(V4,distance);

  
  if (distance <= 20) {  
    digitalWrite(BUZZER_PIN, HIGH);
    digitalWrite(led, HIGH);
  } else {
    digitalWrite(BUZZER_PIN, LOW);
    digitalWrite(led, HIGH);
  }

  delay(500);  


}