#include <LiquidCrystal_I2C.h>

int kolom = 20;
int baris = 4;

LiquidCrystal_I2C lcd(0x27, kolom, baris);  

String TeksDiam = "iqbal putra.a";
String TeksBergerak = "blk kelas iot";

void TulisanBergerak(int row, String message,int delayTime, int kolom) {
  for (int i=0; i < kolom; i++) {
  message = " " + message;
  } 
  message = message + " ";
  for (int pos = 0; pos < message.length(); pos++) {
    lcd.setCursor(0, row);
    lcd.print(message.substring(pos, pos + kolom));
    delay(delayTime);
  }
}

void setup(){
  lcd.init();                      
  lcd.backlight();
}

void loop(){
  lcd.setCursor(0, 0);
  lcd.print(TeksDiam);
  TulisanBergerak(1, TeksBergerak, 200, kolom);
}