#define BLYNK_PRINT Serial

#define BLYNK_TEMPLATE_ID "TMPL6EJA34Mex"
#define BLYNK_TEMPLATE_NAME "ESP32 WOKWI DISTANCE SENSOR"
#define BLYNK_AUTH_TOKEN "eni3Z3lrrNKX5BYG7Ajyr34mqDIvPn9g"

#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

char ssid[] = "CZH";
char pass[] = "00110011";
const int pingPin = 5;
int inPin = 18;

///////////////////////////////////////////////////////
void setup()
{
 
  Serial.begin(9600);

  Blynk.begin(BLYNK_AUTH_TOKEN, ssid, pass);
}

///////////////////////////////////////////////////////
void loop()
{long duration, cm;
 
pinMode(pingPin, OUTPUT);
 
digitalWrite(pingPin, LOW);
delayMicroseconds(2);
digitalWrite(pingPin, HIGH);
delayMicroseconds(5);
digitalWrite(pingPin, LOW);
pinMode(inPin, INPUT);
duration = pulseIn(inPin, HIGH);
 
cm = microsecondsToCentimeters(duration);
 
Serial.print(cm);
Serial.print("cm");
Serial.println();
delay(100);
  
  Blynk.run();
  Blynk.virtualWrite(V0,cm);
}

///////////////////////////////////////////////////////
long microsecondsToCentimeters(long microseconds)
{

return microseconds / 29 / 2;
}