#define BLYNK_TEMPLATE_ID "TMPL6oNSN0PbY"
#define BLYNK_TEMPLATE_NAME "SR04 BLYNK"
#define BLYNK_AUTH_TOKEN "Rpg8Ew4knBVk8Tsy1xo3fk_fboZt0Lxy"

#define BLYNK_PRINT Serial
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
char auth[] = BLYNK_AUTH_TOKEN;
char ssid[] = "Wokwi-GUEST";
char pass[] = "";
#define TRIG_PIN 17
#define ECHO_PIN 16
int led1 = 2;
int led2 = 15;
void setup() {
  Serial.begin(115200);              
  Blynk.begin(auth, ssid, pass);
  pinMode(TRIG_PIN, OUTPUT);
  pinMode(ECHO_PIN, INPUT);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
}
void loop() {
  int duration, distance;
  digitalWrite(TRIG_PIN, LOW);
  delayMicroseconds(2);
  digitalWrite(TRIG_PIN, HIGH);
  delayMicroseconds(10);
  digitalWrite(TRIG_PIN, LOW);
  duration = pulseIn(ECHO_PIN, HIGH);
  distance = 1+(duration * 0.034 / 2);
  Serial.print("Distance: ");
  Serial.print(distance);
  Serial.println(" cm");
  delay(500);
  Blynk.virtualWrite(V0,distance);
  if(distance > 200){
     digitalWrite(led1,LOW);
     digitalWrite(led2,HIGH); 
     Blynk.virtualWrite(V1,0);
     Blynk.virtualWrite(V2,1);
   }else{
     digitalWrite(led1,HIGH); 
     digitalWrite(led2,LOW); 
     Blynk.virtualWrite(V1,1);
     Blynk.virtualWrite(V2,0);
   }
   Blynk.run();
}