#include <WIFI.h>
#include <WIFIClient.h>
#include <BlynkSimpleEsp32.h>

char auth[] = "";
char ssid[] = "wokwi-GUEST";
char pass = ""

BlynkTimer timer:
#define  relay 2
int SW_relay = 0;

BLYNK_WRITE(V0)
{
  SW_relay = param.asInt():
  if (SW_relay ==1){
    digitalWrite(relay, HIGH);
    Serial.println("relay terbuka");
    Blynk.virtualWrite(V0, HIGH);
  }else{
    digitalWrite(relay, LOW);
    Serial.println("relay terbuka");
    Blynk.virtualWrite(V0, LOW);
  }
}

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

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