#define define BLYNK_PRINT Seriel
#define TRIG 4
#define ECHO 5
#define BLYNK_TEMPLATE_ID "TMPL64U55PX5f"
#define BLYNK_TEMPLATE_NAME "4026esp32 hc04"
#define BLYNK_AUTH_TOKEN "pdvZLnzY2mSR9uQQ8aEe5IOaLsHMpEpa"


#include  <WiFi.h>
#include  <WiFiClient.h>
#include  <BlynkSimpleEsp32.h>
char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

int duration,distance;
int pinled0 = 5;
int pinled1 = 4;
int pinled2 = 33;



void setup()
{
  Serial.begin(115200);
  Blynk.begin(auth,ssid,pass);
  pinMode(TRIG,OUTPUT);
  pinMode(ECHO, INPUT);
  pinMode(pinled0, OUTPUT);
  pinMode(pinled1, OUTPUT);
  pinMode(pinled2, OUTPUT);


}

BLYNK_WRITE(V0)
{
 
   digitalWrite(TRIG, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG, HIGH);
  delayMicroseconds(10);
  duration = pulseIn(ECHO,HIGH);
  distance = (duration/2) /29.1;
  Serial.print(distance);
  Serial.println("CM");
 

  int sw = param.asInt();
 
if (distance <= 50){
  digitalWrite(pinled0,HIGH);
 

}else{
  digitalWrite(pinled0,LOW);
 
}
if(distance == 150){
  digitalWrite(pinled0,HIGH);
  digitalWrite(pinled1,HIGH);
  digitalWrite(pinled2,HIGH);

}else{
    digitalWrite(pinled0,LOW);
  digitalWrite(pinled1,LOW);
  digitalWrite(pinled2,LOW);
}
}

void loop()
{
 
  Blynk.run();
  Blynk.virtualWrite(V0,distance);
}