Tutorial.LiquidCrystalSerial History

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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 23, 2010, at 10:50 PM by Christian Cerrito -
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LiquidCrystal - Serial Input

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LiquidCrystal - Serial Input

September 21, 2010, at 11:18 PM by Christian Cerrito -
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September 21, 2010, at 11:16 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 09:02 AM by Christian Cerrito -
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February 09, 2010, at 12:34 AM by Tom Igoe -
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 /*
   LiquidCrystal Library - Serial Input
  
  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 displays text sent over the serial port 
  (e.g. from the Serial Monitor) on an attached LCD.
  
  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 rows and columns: 
   lcd.begin(16, 2);
   // initialize the serial communications:
   Serial.begin(9600);
 }

 void loop()
 {
   // when characters arrive over the serial port...
   if (Serial.available()) {
     // wait a bit for the entire message to arrive
     delay(100);
     // clear the screen
     lcd.clear();
     // read all the available characters
     while (Serial.available() > 0) {
       // display each character to the LCD
       lcd.write(Serial.read());
     }
   }
 }
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August 05, 2009, at 05:14 PM 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
   */
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August 05, 2009, at 05:11 PM 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
   */
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July 09, 2009, at 10:04 PM by Tom Igoe -
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  * LCD R/W pin to digital pin 11
  * LCD Enable pin to digital pin 10
to:
  * LCD Enable pin to digital pin 11
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  by Limor Fried
  example added 7 Jul 2009
to:
  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);
to:
 LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
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     // set up the LCD's number of columns and rows: 
to:
     // set up the LCD's number of rows and columns: 
July 08, 2009, at 10:19 PM by Tom Igoe -
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LiquidCrystal

to:

LiquidCrystal - Serial Input

July 08, 2009, at 08:02 PM by Tom Igoe -
July 08, 2009, at 08:01 PM by Tom Igoe -
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NOTE: The LiquidCrystal library has undergone revisions after Arduino version 0016. Thanks to Limor Fried for the rewrite to include 4-bit and 8-bit modes and more functionality. If you are running Arduino 0016 or earlier, please download the current version of the LiquidCrystal library and install it in your hardware/libraries folder.

Users of 0017 and later will not need to install the update.

July 08, 2009, at 08:00 PM by Tom Igoe -
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Other LiquidCrystal Library Examples

  • Hello World - displays "hello world!" and the seconds since reset
  • Blink
  • Cursor
  • Display
  • IncrementDecrement
  • Scroll
  • Serial input - accepts serial input, displays it
  • SetCursor
  • Shift

Circuit

  • LCD RS pin connected to digital I/O pin 12
  • LCD R/W pin connected to digital I/O pin 11
  • LCD enable pin connected to digital I/O pin 10
  • LCD pins D0 - D3 connected to digital I/O pins 2 through 5, respectively
  • LCD voltage and ground connected to +5V and ground
  • LCD Vo pin, which controls the contrast, connected to a potentiometer. Adjust the potentiometer to get the text to display at the contrast ratio you want.

click the image to enlarge

Schematic:

click the image to enlarge

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July 08, 2009, at 07:58 PM by Tom Igoe -
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  • LCD enavle pin connected to digital I/O pin 10
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  • LCD enable pin connected to digital I/O pin 10
July 08, 2009, at 06:50 PM by Tom Igoe -
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  • HelloWorld - displays "hello world!" and the seconds since reset
to:
  • Hello World - displays "hello world!" and the seconds since reset
July 08, 2009, at 06:49 PM by Tom Igoe -
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July 08, 2009, at 06:49 PM by Tom Igoe -
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July 08, 2009, at 06:49 PM by Tom Igoe -
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Other LiquidCrystal Library Examples

  • HelloWorld - displays "hello world!" and the seconds since reset
  • Blink
  • Cursor
  • Display
  • IncrementDecrement
  • Scroll
  • LiquidCrystalSerial? - accepts serial input, displays it
  • SetCursor
  • Shift
July 08, 2009, at 06:44 PM by Tom Igoe -
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