#define BLYNK_TEMPLATE_ID "TMPL6G4V2-OGR"
#define BLYNK_TEMPLATE_NAME "ESP32 IoT"
#define BLYNK_AUTH_TOKEN "CaR052d5QGdVN4g31IDrx4gPaxtVUvos"

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

#define BLYNK_PRINT Serial
#include <WiFi.h>
#include <WiFiClient.h>
#include <BlynkSimpleEsp32.h>

#define BUTTON1 V0
#define LED1 4

BlynkTimer timer;
BLYNK_WRITE(BUTTON1)
{
  digitalWrite(LED1, param.asInt());
}
void setup() 
{
  Serial.begin(9600);
  pinMode(LED1,OUTPUT);
  Blynk.begin(auth,ssid,pass);
}
void loop() {
  Blynk.run();
}