Tutorial.LiquidCrystalAutoscroll History

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September 02, 2015, at 10:52 PM by Simone Maiocchi -
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  • Hello World! – How to wire an LCD display and bring it to life.
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August 17, 2015, at 01:22 PM by Simone Maiocchi -
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  • Scroll Scroll text left and right.
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  • Scroll - Scroll text left and right.
August 17, 2015, at 01:15 PM by Simone Maiocchi -
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August 17, 2015, at 01:13 PM by Simone Maiocchi -
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Examples > Libraries > LiquidCrystal

LiquidCrystal - autoscroll()

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  • Arduino Board
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  • Arduino or Genuino Board
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  • 10k Potentiometer
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  • 10k ohm potentiometer
  • 220 ohm resistor
  • hook-up wires
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  • hook-up wire
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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:

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Before wiring the LCD screen to your Arduino or Genuino board 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 board, connect the following pins:

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

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Additionally, wire a 10k pot to +5V and GND, with it's wiper (output) to LCD screens VO pin (pin3). A 220 ohm resistor is used to power the backlight of the display, usually on pin 15 and 16 of the LCD connector

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Schematic

click the images to enlarge

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

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See Also:

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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.


Last revision 2015/08/17 by SM

April 09, 2013, at 06:07 PM by Federico -
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  • pin headers to solder to the LCD display pins
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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.\\

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December 10, 2012, at 04:14 PM by Scott Fitzgerald -
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To wire your LED screen to your Arduino, connect the following pins:

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

November 16, 2011, at 04:37 AM by Scott Fitzgerald -
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September 24, 2010, at 05:51 AM by Tom Igoe -
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September 24, 2010, at 05:51 AM by Tom Igoe -
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September 23, 2010, at 10:50 PM by Christian Cerrito -
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LiquidCrystal - autoscroll()

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LiquidCrystal - autoscroll()

September 21, 2010, at 11:28 PM by Christian Cerrito -
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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.

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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.

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September 21, 2010, at 09:05 AM by Christian Cerrito -
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Additionally, wire a 10K pot to +5V and GND, with it's wiper (output) to LCD screens VO pin (pin3).

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

September 21, 2010, at 09:04 AM by Christian Cerrito -
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February 09, 2010, at 12:33 AM by Tom Igoe -
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February 09, 2010, at 12:33 AM by Tom Igoe -
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 /*
   LiquidCrystal Library - Autoscroll
  
  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 demonstrates the use of the autoscroll()
  and noAutoscroll() functions to make new text scroll or not.
  
  The circuit:
  * 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
  * 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 (http://www.ladyada.net)
  example added 9 Jul 2009
  by Tom Igoe 
  modified 25 July 2009
  by David A. Mellis
  
  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, 5, 4, 3, 2);

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

 void loop() {
   // 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();
 }

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August 05, 2009, at 05:06 PM by Tom Igoe -
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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.

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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.

August 05, 2009, at 05:05 PM by Tom Igoe -
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LiquidCrystal - scrollDisplayLeft() and scrollDisplayRight()

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LiquidCrystal - autoscroll()

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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.

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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.

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   LiquidCrystal Library - scrollDisplayLeft() and scrollDisplayRight()
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   LiquidCrystal Library - Autoscroll
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  This sketch prints "Hello World!" to the LCD and uses the
  scrollDisplayLeft() and scrollDisplayRight() methods to scroll
  the text.
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  This sketch demonstrates the use of the autoscroll()
  and noAutoscroll() functions to make new text scroll or not.
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   The circuit:
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  The circuit:
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  modified 25 July 2009
  by David A. Mellis
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 #include <LiquidCrystal.h>
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 #include <LiquidCrystal.h>
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 LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
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 LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
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   // set up the LCD's number of rows and columns: 
   lcd.begin(2, 16);
   lcd.setCursor(0,7);
   // Print a message to the LCD.
   lcd.print("hello, world!");
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   // set up the LCD's number of columns and rows: 
   lcd.begin(16,2);
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   // 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);
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   // 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);
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   // 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);
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   // 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);
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   // turn off automatic scrolling
   lcd.noAutoscroll();

   // clear screen for the next loop:
   lcd.clear();
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July 09, 2009, at 10:03 PM by Tom Igoe -
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  * LCD R/W pin to digital pin 11
  * LCD Enable pin to digital pin 10
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  * LCD Enable pin to digital pin 11
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  by Limor Fried
  example added 7 Jul 2009
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  by Limor Fried (http://www.ladyada.net)
  example added 9 Jul 2009
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 LiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2);
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 LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
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   // set up the LCD's number of columns and rows: 
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   // set up the LCD's number of rows and columns: 
July 08, 2009, at 08:54 PM by Tom Igoe -
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