#define BLYNK_TEMPLATE_ID "TMPL3psuMw8yf"
#define BLYNK_TEMPLATE_NAME "TRAFFIC"
#define BLYNK_AUTH_TOKEN "02GQ56PfxMyJjzyZsXbq77XBckzK978v"
#define BLYNK_PRINT Serial
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>
char auth[] = BLYNK_AUTH_TOKEN;
char ssid[]="Wokwi-GUEST";
char pass[]="";
int w1;
BLYNK_WRITE(V3)
{
  int valuee= param.asInt();
  if(valuee==1)
  {
    w1=1;
  }
  else{
    w1=0;
  }
}

void setup() {
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  Blynk.begin(auth,ssid,pass);
  pinMode(21, OUTPUT);
  pinMode(4, OUTPUT);
  pinMode(2, OUTPUT);
}

void loop() {
  if(w1==1)
  {
  digitalWrite(21,w1);
  Blynk.virtualWrite(V0, w1);
  delay(1000);
  digitalWrite(21,0);
  Blynk.virtualWrite(V0,0);
  delay(1000);
  digitalWrite(4,w1);
  Blynk.virtualWrite(V1, w1);
  delay(1000);
  digitalWrite(4,0);
  Blynk.virtualWrite(V1,0);
  delay(1000);
  digitalWrite(2,w1);
  Blynk.virtualWrite(V2, w1);
  delay(1000);
  digitalWrite(2,0);
  Blynk.virtualWrite(V2,0);
  delay(1000);
  }
  delay(1000);
  Blynk.run();
}