• pin headers to solder to the LCD display pins

Before wiring the LCD screen to your Arduino we suggest to solder a pin header strip to the 14 (or 16) pin count connector of the LCD screen, as you can see in the image above.\\

To wire your LCD screen to your Arduino, connect the following pins:

(:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/Autoscroll/Autoscroll.ino lang=arduino tabwidth=4:)

• lcd.clear()

• lcd.autoscroll()
• lcd.noAutoscroll()

LiquidCrystal - autoscroll()

The Liquid Crystal Library allows you to control LCD displays that are compatible with the Hitachi HD44780 driver. There are many of them out there, and you can usually tell them by the 16-pin interface.

• lcd.begin()
• lcd.print()
• lcd.setCursor()
• lcd.autoscroll()?
• lcd.noAutoscroll()?
• lcd.clear()?
• for()

Additionally, wire a 10K pot to +5V and GND, with it's wiper (output) to the LCD screen's VO pin (pin3).

(:div class=BOM :)

Hardware Required

• Arduino Board
• LCD Screen (compatible with Hitachi HD44780 driver)
• 10k Potentiometer
• breadboard
• hook-up wire

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Circuit

(:div class=circuit :) To wire your LED screen to your Arduino, connect the following pins:

• LCD RS pin to digital pin 12
• LCD Enable pin to digital pin 11
• LCD D4 pin to digital pin 5
• LCD D5 pin to digital pin 4
• LCD D6 pin to digital pin 3
• LCD D7 pin to digital pin 2

Additionally, wire a 10K pot to +5V and GND, with it's wiper (output) to LCD screens VO pin (pin3).

click the images to enlarge

image developed using Fritzing. For more circuit examples, see the Fritzing project page

(:divend:)

(:divend:)

See Also:

• Blink: control of the block-style cursor.
• Cursor: control of the underscore-style cursor.
• Display: quickly blank the display without losing what's on it.
• TextDirection: control which way text flows from the cursor.
• Scroll: scroll text left and right.
• Serial input: accepts serial input, displays it.
• SetCursor: set the cursor position.
• Autoscroll: shift text right and left.

(:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/Autoscroll/Autoscroll.pde lang=arduino tabwidth=4:)

(:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/AutoScroll/AutoScroll.pde lang=arduino tabwidth=4:)

This sketch prints the characters 0 to 9 with autoscroll off, then moves the cursor to the bottom right, turns autoscroll on, and prints them again.

LiquidCrystal - autoscroll()

This example sketch shows how to use the autoscroll() and noAutoscroll() methods to move all the text on the display left or right.

autoscroll() moves all the text one space to the left each time a letter is added

noAutoscroll() turns scrolling off

This sketch prints the characters @0@ to @9@ with autoscroll off, then moves the cursor to the bottom right, turns autoscroll on, and prints them again.

   LiquidCrystal Library - Autoscroll

  This sketch demonstrates the use of the autoscroll()
  and noAutoscroll() functions to make new text scroll or not.

  The circuit:

  modified 25 July 2009
  by David A. Mellis

 #include <LiquidCrystal.h>

 LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

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

   // set the cursor to (0,0):
   lcd.setCursor(0, 0);
   // print from 0 to 9:
   for (int thisChar = 0; thisChar < 10; thisChar++) {
    lcd.print(thisChar);
    delay(500);

   // set the cursor to (16,1):
   lcd.setCursor(16,1);
   // set the display to automatically scroll:
   lcd.autoscroll();
   // print from 0 to 9:
   for (int thisChar = 0; thisChar < 10; thisChar++) {
     lcd.print(thisChar);
     delay(500);

   // turn off automatic scrolling
   lcd.noAutoscroll();

   // clear screen for the next loop:
   lcd.clear();

  * LCD Enable pin to digital pin 11

  by Limor Fried (http://www.ladyada.net)
  example added 9 Jul 2009

 LiquidCrystal lcd(12, 11, 5, 4, 3, 2);

   // set up the LCD's number of rows and columns: 

Examples > Libraries > LiquidCrystal

LiquidCrystal - scrollDisplayLeft() and scrollDisplayRight()

The LiquidCrystal library allows you to control LCD displays that are compatible with the Hitachi HD44780 driver. There are many of them out there, and you can usually tell them by the 16-pin interface.

This example sketch shows how to use the scrollDisplayLeft() and scrollDisplayRight() methods to move all the text on the display left or right.

scrollDisplayLeft() moves all the text one space to the left

scrollDisplayRight() moves all the text one space to the right

This sketch prints "hello world!", then scrolls it left, then right.

(:include LiquidCrystalCircuit :)

Code

(:div class=code :)

 /*
   LiquidCrystal Library - scrollDisplayLeft() and scrollDisplayRight()
  
  Demonstrates the use a 16x2 LCD display.  The LiquidCrystal
  library works with all LCD displays that are compatible with the 
  Hitachi HD44780 driver. There are many of them out there, and you
  can usually tell them by the 16-pin interface.
  
  This sketch prints "Hello World!" to the LCD and uses the
  scrollDisplayLeft() and scrollDisplayRight() methods to scroll
  the text.
  
   The circuit:
  * LCD RS pin to digital pin 12
  * LCD R/W pin to digital pin 11
  * LCD Enable pin to digital pin 10
  * LCD D4 pin to digital pin 5
  * LCD D5 pin to digital pin 4
  * LCD D6 pin to digital pin 3
  * LCD D7 pin to digital pin 2
  * 10K resistor:
  * ends to +5V and ground
  * wiper to LCD VO pin (pin 3)
  
  Library originally added 18 Apr 2008
  by David A. Mellis
  library modified 5 Jul 2009
  by Limor Fried
  example added 7 Jul 2009
  by Tom Igoe 
  
  http://www.arduino.cc/en/Tutorial/LiquidCrystal
  */

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

 // initialize the library with the numbers of the interface pins
 LiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2);

 void setup() {
   // set up the LCD's number of columns and rows: 
   lcd.begin(2, 16);
   lcd.setCursor(0,7);
   // Print a message to the LCD.
   lcd.print("hello, world!");
 }

 void loop() {
   // scroll 27 positions (display length + string length) to the left:
   for (int positionCounter = 0; positionCounter < 27; positionCounter++) {
     // scroll one position left:
     lcd.scrollDisplayLeft(); 
     // wait a bit:
     delay(200);
   }

   // scroll 27 positions (display length + string length) to the right:
   for (int positionCounter = 0; positionCounter < 27; positionCounter++) {
     // scroll one position right:
     lcd.scrollDisplayRight(); 
     // wait a bit:
     delay(200);
   }
 }

(:divend:)