int led1 = 7;
int led2 = 2;
int pb1 = 13;
int pb2 = 12;
unsigned long waktuMillis;
unsigned long led2Millis;
int led2Duration = 5000;
unsigned long currentMillis = 0;

void setup() {
  pinMode(pb1, INPUT);
  pinMode(pb2, INPUT);
  pinMode(led1, OUTPUT);
  pinMode(led2, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  waktuMillis = millis();

  int spb1 = digitalRead(pb1);
  int spb2 = digitalRead(pb2);

  if (spb1 == HIGH) {
    digitalWrite(led1, HIGH);
  } else {
    digitalWrite(led1, LOW);
  }

  if (spb2 == HIGH) {
    digitalWrite(led2, HIGH);
    led2Millis = waktuMillis;  
  }

  if ((waktuMillis - led2Millis) >= led2Duration) {
    digitalWrite(led2, LOW);
  }
}