#define LED 4
#define PUSH_BUTTON 14

void setup() {
  Serial.begin(115200);
  pinMode(LED, OUTPUT);
  pinMode(PUSH_BUTTON, INPUT_PULLDOWN);
}

/*
here we used a PULL_DOWN resistor which in case the button is not 
pressed the read is 0 so the LED will be turned off and if the button 
is pressed the read is 1 so the LED will be turned on
*/

void loop() {
  int push_button_read = digitalRead(PUSH_BUTTON);
  if(push_button_read == 1){
    digitalWrite(LED, HIGH);
    Serial.print("Button is pressed, push button read: ");
    Serial.println(push_button_read);
  } 
  else{
    digitalWrite(LED, LOW);
    Serial.print("Button is not pressed, push button read: ");
    Serial.println(push_button_read);
  }

  delay(1000);
}