// Sketch from: https://www.instructables.com/Arduino-LCD-Display-FlyIn-Text-Effect/
// Diagram from: https://wokwi.com/projects/294342288335700490
// Code adjusted for other pins to the display.

#include <LiquidCrystal.h>

LiquidCrystal lcd(12, 11, 10, 9, 8, 7);

// define variables

int startPoint;
int endPoint;
int i, j;

// speed of the text movement
int speed = 50;

// text to display
String txtMsg = "entropy";



void setup() {
  // set up the LCD's number of columns and rows:
  lcd.begin(16, 2);
}

void loop() {

  startPoint = 0;   //set starting point
  endPoint = 12;    //set ending point
  lcd.clear();

  //for each letter of the string starting from the last one.
  for (i = txtMsg.length() - 1; i >= 0; i--)
  {
    startPoint = 0;


    //for each position on the LCD display
    for (j = 0; j < endPoint; j++)
    {

      lcd.setCursor(startPoint, 0);
      lcd.print(txtMsg[i]);

      delay(speed);

      if (startPoint != endPoint - 1) {
        lcd.setCursor(startPoint, 0);
        lcd.print(' ');
      }
      startPoint++;
    }
    endPoint--;

    delay(speed);
  }

  // hold the string on the display for 2 sec.
  delay(2000);

}