#define tombolOn 8
#define tombolOff 9
#define led 13

void setup() {
  pinMode(tombolOn, INPUT_PULLUP);   // Aktifkan resistor pull-up internal
  pinMode(tombolOff, INPUT_PULLUP);
  pinMode(led, OUTPUT);
}

void loop() {
  // Tombol ditekan akan terbaca LOW karena pakai INPUT_PULLUP
  if (digitalRead(tombolOn) == LOW) {
    digitalWrite(led, HIGH);         // Nyalakan LED
  }

  if (digitalRead(tombolOff) == LOW) {
    digitalWrite(led, LOW);          // Matikan LED
  }
}