#define BLYNK_PRINT Serial
int pin        = 21;

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

#define BLYNK_TEMPLATE_ID "TMPL3rP4Y2zb6"
#define BLYNK_TEMPLATE_NAME "BRIKSTONE"
#define BLYNK_AUTH_TOKEN "u6hyxkAcF9PpRP5JoVdMUTQKTQRGAXSo"
char ssid[] = "Wokwi-GUEST";
char pass[] = "";

void setup() {  
  pinMode(pin, OUTPUT); 
  pinMode(pin, HIGH);
  Serial.begin(115200);

  delay(10);
  Serial.print("Connecting to ");
  Serial.println(ssid);

  WiFi.begin(ssid, pass);
  int wifi_ctr = 0;
  while (WiFi.status() != WL_CONNECTED) {
    delay(500);
    Serial.print(".");
  }

  Serial.println("WiFi connected");  

  Blynk.begin("Your auth token key", ssid, pass);

}

void loop(){
    Blynk.run();
}