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

#define LCD_ADDRESS 0x27 // I2C address of the LCD module
#define LCD_COLUMNS 20  // Number of columns in the LCD module
#define LCD_ROWS 4    // Number of rows in the LCD module

LiquidCrystal_I2C lcd(LCD_ADDRESS, LCD_COLUMNS, LCD_ROWS);

const int redPin = 2;    // Red LED connected to pin 13
const int yellowPin = 5; // Yellow LED connected to pin 12
const int greenPin = 18;  // Green LED connected to pin 14

void setup() {
  lcd.init();
  lcd.print("TRAFFIC_LIGHT");
  pinMode(redPin, OUTPUT);
  pinMode(yellowPin, OUTPUT);
  pinMode(greenPin, OUTPUT);

  lcd.begin(LCD_COLUMNS, LCD_ROWS);
  lcd.setBacklight(HIGH);
}

void loop() {
  // Red light
  digitalWrite(redPin, HIGH);
  digitalWrite(yellowPin, LOW);
  digitalWrite(greenPin, LOW);

  lcd.setCursor(0, 0);
  lcd.print("STOP        ");

  delay(2000); // Stay red for 3 seconds

  

  // Yellow light
  digitalWrite(redPin, LOW);
  digitalWrite(yellowPin, HIGH);
  digitalWrite(greenPin, LOW);

  lcd.setCursor(0, 0);
  lcd.print("READY        ");

  delay(2000); // Stay green for 5 seconds

  // Green light
  digitalWrite(redPin, LOW);
  digitalWrite(yellowPin, LOW);
  digitalWrite(greenPin, HIGH);

  lcd.setCursor(0, 0);
  lcd.print("GO AHEAD ");

  delay(2000); // Stay yellow for 2 seconds
}