// This example prints text onto a 16x2 character Liquid Crystal
// Display (LCD), and scrolls the LCD left and right.

#include <LiquidCrystal.h>        // include the LiquidCrystal library

// Create an lcd object, and specifiy its connections:
//   lcd RS and E lines connected to pins 6 and 7,
//   lcd data lines D4-D7 conneected to Arduino pins 0-3.
LiquidCrystal myLCD(6,7,0,1,2,3);

int pos = 0;                        // lcd scroll position
int dir = 1;                        // lcd scrolling direction

void setup() {
  pinMode(4,OUTPUT);
  digitalWrite(4, HIGH);            // this sets backlight+ to 5V
  pinMode(5,OUTPUT);
  digitalWrite(5, LOW);             // this sets backlight- to 0V 
  
  myLCD.begin(16, 2);               // set the correct lcd size (16x2)
  myLCD.clear();
  myLCD.home();                     // send cursor to position (0,0)
  myLCD.print("Hello...");
  myLCD.setCursor(8, 1);            // move cursor to position (8,1)
  myLCD.print("Arduino!");
}

void loop() {
  if (dir == 1) {                   // scroll lcd in direction dir
    myLCD.scrollDisplayRight();
  } else {
    myLCD.scrollDisplayLeft();
  }
  pos += dir;                       // update scroll position
  if (pos < -15 || pos > 15) {
    dir *= -1;                      // reverse scroll direction
  }
  delay(200); 
}