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

LiquidCrystal_I2C lcd(0x27, 16, 2);

String line1 = "HI, JOJIN";
String line2 = "I AM ANEESH KUMAR P B. I WELCOMES YOU TO MY NEW PROJECT";
int pos = 0;

void setup() {
  Wire.begin(21, 22);
  lcd.init();
  lcd.backlight();

  // Fixed first line
  lcd.setCursor(0, 0);
  lcd.print(line1);
}

void loop() {
  lcd.setCursor(0, 1);

  // Print only 16 chars of line2
  lcd.print(line2.substring(pos, pos + 16));

  pos++;
  if (pos > line2.length() - 16) {
    pos = 0;
  }

  delay(900);   // adjust scroll speed
}