#include <Wire.h>
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27, 16, 2); 
const int ledPin1 = 2; 
const int ledPin2 = 4; 
const int ledPin3 = 13; 
const int ledPin4 = 14; 

const char* words[] = {
  "Word1",
  "Word2",
  "Word3",
  "Word4"
};
int numWords = sizeof(words) / sizeof(words[0]);

int currentWordIndex = 0;
unsigned long lastWordChangeTime = 0;
const long wordDisplayDuration = 1000; 

void setup() {
  lcd.init();
  lcd.backlight(); 
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);
}

void loop() {
  unsigned long currentTime = millis();

  if (currentTime - lastWordChangeTime >= wordDisplayDuration) {
    
    lcd.clear();
    lcd.setCursor(5, 1);
    lcd.print(words[currentWordIndex]);
    currentWordIndex = (currentWordIndex + 1) % numWords;
    lastWordChangeTime = currentTime;
  }

  updateLEDs(currentWordIndex);
}

void updateLEDs(int index) {
  
  digitalWrite(ledPin1, (index == 0) ? HIGH : LOW);
  digitalWrite(ledPin2, (index == 1) ? HIGH : LOW);
  digitalWrite(ledPin3, (index == 2) ? HIGH : LOW);
  digitalWrite(ledPin4, (index == 3) ? HIGH : LOW);
}