int button_1 = 2;
int button_2 = 15;



void setup() {
  // put your setup code here, to run once:
  pinMode(button_1, INPUT);
  pinMode(button_2, INPUT);

  Serial.begin(9600);
}

void loop() {
  int button1_status = digitalRead(button_1);
  int button2_status = digitalRead(button_2);

  if(button1_status == LOW){
    Serial.print("Push button_1 is pressed");
    delay(200);

  }

  if(button2_status == HIGH){
    Serial.print("Push button_2 is pressed");
    delay(200);

  }



}