#define BLYNK_TEMPLATE_ID "TMPL3CQFypBwx"
#define BLYNK_TEMPLATE_NAME "ultrasonic"
#define BLYNK_AUTH_TOKEN "jrs67bfQXpb_WGxJpR5WJWzGC0fi3y6R"
#include <WiFi.h>
#include <BlynkSimpleEsp32.h>
#define TRIG_PIN 23
#define ECHO_PIN 22
char auth[] = "jrs67bfQXpb_WGxJpR5WJWzGC0fi3y6R";  
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
BlynkTimer timer;
void sendSensorData()
{
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  long duration = pulseIn(ECHO_PIN, HIGH);
  int distance = duration * 0.034 / 2;
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
   Blynk.virtualWrite(V0, distance);  // Virtual Pin V1 for temperature
delay(2000);
}
void setup()
{
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);
   pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
timer.setInterval(1000L, sendSensorData);  // Send sensor data every 5 seconds
}
void loop()
{
  Blynk.run();
  timer.run();
}