#include <LiquidCrystal_I2C.h>

//initializing the LCD
LiquidCrystal_I2C lcd(0x27, 16, 2);

#define buttonPin 2 // the pin number of the button
int countdown = 20; // initial countdown value
int currentState = digitalRead(buttonPin);
void setup() {

  // initialize LCD
  lcd.init();
  // turn on LCD backlight
  lcd.backlight();

  Serial.begin(9600); // initialize serial communication
  pinMode(buttonPin, INPUT); // set button pin as input with internal pull-up resistor
  countdown = 20;
}

void loop() {

  //countdown timer
  if (digitalRead(buttonPin) == currentState) {
    // set cursor to first column, first row
    lcd.setCursor(1, 0);
    lcd.print(countdown);
    Serial.println(countdown);
    // String speech = String(countdown); // convert countdown value to string
    // Speak.sayString(speech); // generate speech output
    countdown--;
    Serial.println(countdown);
    delay(1000); // 1 second delay
  }

  else {

    countdown = 20;
    currentState = digitalRead(buttonPin);
  }

}