#define BUTTON_1 2
#define BUTTON_2 15


void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(BUTTON_1, INPUT);
  pinMode(BUTTON_2, INPUT);
}

void loop() {
  int button_1_state = digitalRead(BUTTON_1);
  int button_2_state = digitalRead(BUTTON_2);

  if (button_1_state == LOW) {
    Serial.println("BUTTON 1 is pressed.");
    delay(200); 
  }

  if (button_2_state == HIGH) {
    Serial.println("BUTTON 2 is presses.");
    delay(200);
  }
}