#define BLYNK_PRINT Serial
#define BLYNK_TEMPLATE_ID "TMPL6-eeBXGM6"
#define BLYNK_TEMPLATE_NAME "ultrasonic"
#define BLYNK_AUTH_TOKEN "F2-u86QXsineHiVRcTA2sQca2YLsT1DE"

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

#define TRIGGER_PIN 4
#define ECHO_PIN 16

char auth[] = "MZCuukHad46z4YJyhIXS2dYrWY9ILZNS";
char ssid[] = "Wokwi-GUEST";
char pass[] = "";


void setup()
{
  Serial.begin(115200);
  Blynk.begin(auth, ssid, pass);
  pinMode(TRIGGER_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
}

void loop()
{
  Blynk.run();
  long duration, distance;
  digitalWrite(TRIGGER_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIGGER_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIGGER_PIN, LOW);
  duration = pulseIn(ECHO_PIN, HIGH);
  distance = (duration / 2) * 0.0343;
  Blynk.virtualWrite(V0, distance);
  delay(1000); // Set delay as needed
}