const int buttonPin = 5;
const int ledPin = 25;
int buttonState = 0;
void setup () {
  Serial.begin (9600);
  pinMode(buttonPin, INPUT);
  pinMode(ledPin, OUTPUT);
}
void loop (){
  buttonState = digitalRead(buttonPin);
  Serial.println(buttonState);
  if (buttonState == HIGH){
    digitalWrite(ledPin, HIGH);
  } else {
    digitalWrite(ledPin, LOW);
  }
}