Tutorial.LiquidCrystalDisplay History

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April 09, 2013, at 06:04 PM by Federico -
Added line 13:
* pin headers to solder to the LCD display pins
Added line 22:
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.\\
Deleted line 70:
December 10, 2012, at 04:13 PM by Scott Fitzgerald -
Changed line 21 from:
To wire your LED screen to your Arduino, connect the following pins:
to:
To wire your LCD screen to your Arduino, connect the following pins:
November 16, 2011, at 04:36 AM by Scott Fitzgerald -
Changed lines 47-48 from:
(:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/Display/Display.pde lang=arduino tabwidth=4:)
to:
(:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/Display/Display.ino lang=arduino tabwidth=4:)
September 23, 2010, at 10:49 PM by Christian Cerrito -
Changed lines 3-4 from:
!!LiquidCrystal - display() and noDisplay()
to:
!!!LiquidCrystal - display() and noDisplay()
September 21, 2010, at 10:54 PM by Christian Cerrito -
Changed lines 56-58 from:
* [[Reference/LiquidCrystalCursor| @@lcd.Cursor()@@]]
* [[Reference/LiquidCrystalNoCursor | @@lcd.NoCursor()@@]]
to:
* [[Reference/LiquidCrystalDisplay| @@lcd.Display()@@]]
* [[Reference/LiquidCrystalNoCursor | @@lcd.NoDisplay()@@]]
September 21, 2010, at 10:54 PM by Christian Cerrito -
Changed lines 5-6 from:
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.
to:
The [[Reference/LiquidCrystal | '''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.
Added lines 54-59:
* [[Reference/LiquidCrystalBegin | @@lcd.begin()@@]]
* [[Reference/LiquidCrystalPrint | @@lcd.print()@@]]
* [[Reference/LiquidCrystalCursor| @@lcd.Cursor()@@]]
* [[Reference/LiquidCrystalNoCursor | @@lcd.NoCursor()@@]]

* [[Reference/LiquidCrystal | Liquid Crystal Library]]
Deleted line 61:
* [[LiquidCrystalDisplay| Display]]: quickly blank the display without losing what's on it.
Added lines 67-69:


September 21, 2010, at 12:47 PM by Tom Igoe -
Changed lines 47-48 from:
(:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/Display/Display.pde lang=arduino tabwidth=4:)
to:
:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/Display/Display.pde lang=arduino tabwidth=4:)
September 21, 2010, at 12:47 PM by Tom Igoe -
Changed lines 47-48 from:
(:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/Display/Display.pde lang=arduino tabwidth=4:)
to:
(:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/Display/Display.pde lang=arduino tabwidth=4:)
September 21, 2010, at 08:58 AM by Christian Cerrito -
Changed line 30 from:
Additionally, wire a 10K pot to +5V and GND, with it's wiper (output) to LCD screens VO pin (pin3).
to:
Additionally, wire a 10K pot to +5V and GND, with it's wiper (output) to LCD screen's VO pin (pin3).
September 21, 2010, at 08:57 AM by Christian Cerrito -
Changed lines 9-11 from:

(:include LiquidCrystalCircuit :)
to:
(:div class=BOM :)
!!!Hardware Required
* Arduino Board
* LCD Screen (compatible with Hitachi HD44780 driver)
* 10k Potentiometer
* breadboard
* hook-up wire

(:divend:)

!!!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-]

%height=300px%[[Attach:LCD_bb.png | Attach:LCD_bb.png]]
[-image developed using [[http://www.fritzing.org |Fritzing]]. For more circuit examples, see the [[http://fritzing.org/projects/|Fritzing project page]] -]

%height=300px%[[Attach:LCD_schem.png | Attach:LCD_schem.png]]

(:divend:)




Changed lines 49-61 from:
(:divend:)
to:
(:divend:)


!!!See Also:

* [[LiquidCrystalBlink | Blink]]: control of the block-style cursor.
* [[LiquidCrystalCursor | Cursor]]: control of the underscore-style cursor.
* [[LiquidCrystalDisplay| Display]]: quickly blank the display without losing what's on it.
* [[LiquidCrystalTextDirection | TextDirection]]: control which way text flows from the cursor.
* [[LiquidCrystalScroll| Scroll]]: scroll text left and right.
* [[LiquidCrystalSerial |Serial input]]: accepts serial input, displays it.
* [[LiquidCrystalSetCursor| SetCursor]]: set the cursor position.
* [[LiquidCrystalAutoscroll | Autoscroll]]: shift text right and left.
February 09, 2010, at 12:30 AM by Tom Igoe -
Changed lines 14-73 from:

%color=#7e7e7e%/*
%color=#7e7e7e% LiquidCrystal Library - display() and noDisplay()
%color=#7e7e7e%
%color=#7e7e7e% Demonstrates the use a 16x2 LCD display. The LiquidCrystal
%color=#7e7e7e% library works with all LCD displays that are compatible with the
%color=#7e7e7e% Hitachi HD44780 driver. There are many of them out there, and you
%color=#7e7e7e% can usually tell them by the 16-pin interface.
%color=#7e7e7e%
%color=#7e7e7e% This sketch prints "Hello World!" to the LCD and uses the
%color=#7e7e7e% display() and noDisplay() functions to turn on and off
%color=#7e7e7e% the display.
%color=#7e7e7e%
%color=#7e7e7e% The circuit:
%color=#7e7e7e% * LCD RS pin to digital pin 12
%color=#7e7e7e% * LCD Enable pin to digital pin 11
%color=#7e7e7e% * LCD D4 pin to digital pin 5
%color=#7e7e7e% * LCD D5 pin to digital pin 4
%color=#7e7e7e% * LCD D6 pin to digital pin 3
%color=#7e7e7e% * LCD D7 pin to digital pin 2
%color=#7e7e7e% * 10K resistor:
%color=#7e7e7e% * ends to +5V and ground
%color=#7e7e7e% * wiper to LCD VO pin (pin 3)
%color=#7e7e7e%
%color=#7e7e7e% Library originally added 18 Apr 2008
%color=#7e7e7e% by David A. Mellis
%color=#7e7e7e% library modified 5 Jul 2009
%color=#7e7e7e% by Limor Fried (http://www.ladyada.net)
%color=#7e7e7e% example added 9 Jul 2009
%color=#7e7e7e% by Tom Igoe
%color=#7e7e7e% modified 25 July 2009
%color=#7e7e7e% by David A. Mellis

%color=#7e7e7e%
%color=#7e7e7e% http://www.arduino.cc/en/Tutorial/LiquidCrystal
%color=#7e7e7e% */

%color=#7e7e7e%// include the library code:
#include <%color=#cc6600%LiquidCrystal%%.h>

%color=#7e7e7e%// initialize the library with the numbers of the interface pins
%color=#cc6600%LiquidCrystal%% lcd(12, 11, 5, 4, 3, 2);

%color=#cc6600%void%% %color=#cc6600%'''setup'''%%() {
%color=#7e7e7e%// set up the LCD's number of rows and columns:
lcd.%color=#cc6600%begin%%(16, 2);
%color=#7e7e7e%// Print a message to the LCD.
lcd.%color=#cc6600%print%%(%color=#006699%"hello, world!"%%);
}

%color=#cc6600%void%% %color=#cc6600%'''loop'''%%() {
%color=#7e7e7e%// Turn off the display:
lcd.%color=#cc6600%noDisplay%%();
%color=#cc6600%delay%%(500);
%color=#7e7e7e%// Turn on the display:
lcd.%color=#cc6600%display%%();
%color=#cc6600%delay%%(500);
}

to:
(:source http://arduino.cc/en/pub/code/master/libraries/LiquidCrystal/examples/Display/Display.pde lang=arduino tabwidth=4:)
August 05, 2009, at 04:52 PM by Tom Igoe -
Added lines 44-46:
%color=#7e7e7e% modified 25 July 2009
%color=#7e7e7e% by David A. Mellis
Changed line 52 from:
#include <LiquidCrystal.h>
to:
#include <%color=#cc6600%LiquidCrystal%%.h>
Changed line 55 from:
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
to:
%color=#cc6600%LiquidCrystal%% lcd(12, 11, 5, 4, 3, 2);
Changed line 59 from:
lcd.%color=#cc6600%begin%%(2, 16);
to:
lcd.%color=#cc6600%begin%%(16, 2);
Changed line 66 from:
lcd.noDisplay();
to:
lcd.%color=#cc6600%noDisplay%%();
Changed line 69 from:
lcd.display();
to:
lcd.%color=#cc6600%display%%();
Added line 73:
July 09, 2009, at 10:01 PM by Tom Igoe -
Changed lines 29-30 from:
%color=#7e7e7e% * LCD R/W pin to digital pin 11
%color=#7e7e7e% * LCD Enable pin to digital pin 10
to:
%color=#7e7e7e% * LCD Enable pin to digital pin 11
Changed lines 41-42 from:
%color=#7e7e7e% by Limor Fried
%color=#7e7e7e% example added 7 Jul 2009
to:
%color=#7e7e7e% by Limor Fried (http://www.ladyada.net)
%color=#7e7e7e% example added 9 Jul 2009
Changed line 52 from:
LiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2);
to:
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
Changed line 55 from:
%color=#7e7e7e%// set up the LCD's number of columns and rows:
to:
%color=#7e7e7e%// set up the LCD's number of rows and columns:
July 08, 2009, at 08:43 PM by Tom Igoe -
July 08, 2009, at 08:42 PM by Tom Igoe -
Changed lines 71-77 from:
(:divend:)

(:toggle box3:)
>>id=box3 border='1px solid #999' padding=5px bgcolor=#fed<<
The text in this section can be hidden/shown
>><<
to:
(:divend:)
July 08, 2009, at 08:42 PM by Tom Igoe -
Changed lines 71-77 from:
(:divend:)
to:
(:divend:)

(:toggle box3:)
>>id=box3 border='1px solid #999' padding=5px bgcolor=#fed<<
The text in this section can be hidden/shown
>><<
July 08, 2009, at 08:14 PM by Tom Igoe -
Added lines 1-71:
''Examples > Libraries > LiquidCrystal''

!!LiquidCrystal - display() and noDisplay()

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 display() and noDisplay() methods to turn on and off the display. The text to be displayed will still be preserved when you use noDisplay() so it's a quick way to blank the display without losing everything on it.


(:include LiquidCrystalCircuit :)

!!!Code
(:div class=code :)

%color=#7e7e7e%/*
%color=#7e7e7e% LiquidCrystal Library - display() and noDisplay()
%color=#7e7e7e%
%color=#7e7e7e% Demonstrates the use a 16x2 LCD display. The LiquidCrystal
%color=#7e7e7e% library works with all LCD displays that are compatible with the
%color=#7e7e7e% Hitachi HD44780 driver. There are many of them out there, and you
%color=#7e7e7e% can usually tell them by the 16-pin interface.
%color=#7e7e7e%
%color=#7e7e7e% This sketch prints "Hello World!" to the LCD and uses the
%color=#7e7e7e% display() and noDisplay() functions to turn on and off
%color=#7e7e7e% the display.
%color=#7e7e7e%
%color=#7e7e7e% The circuit:
%color=#7e7e7e% * LCD RS pin to digital pin 12
%color=#7e7e7e% * LCD R/W pin to digital pin 11
%color=#7e7e7e% * LCD Enable pin to digital pin 10
%color=#7e7e7e% * LCD D4 pin to digital pin 5
%color=#7e7e7e% * LCD D5 pin to digital pin 4
%color=#7e7e7e% * LCD D6 pin to digital pin 3
%color=#7e7e7e% * LCD D7 pin to digital pin 2
%color=#7e7e7e% * 10K resistor:
%color=#7e7e7e% * ends to +5V and ground
%color=#7e7e7e% * wiper to LCD VO pin (pin 3)
%color=#7e7e7e%
%color=#7e7e7e% Library originally added 18 Apr 2008
%color=#7e7e7e% by David A. Mellis
%color=#7e7e7e% library modified 5 Jul 2009
%color=#7e7e7e% by Limor Fried
%color=#7e7e7e% example added 7 Jul 2009
%color=#7e7e7e% by Tom Igoe
%color=#7e7e7e%
%color=#7e7e7e% http://www.arduino.cc/en/Tutorial/LiquidCrystal
%color=#7e7e7e% */

%color=#7e7e7e%// include the library code:
#include <LiquidCrystal.h>

%color=#7e7e7e%// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(12, 11, 10, 5, 4, 3, 2);

%color=#cc6600%void%% %color=#cc6600%'''setup'''%%() {
%color=#7e7e7e%// set up the LCD's number of columns and rows:
lcd.%color=#cc6600%begin%%(2, 16);
%color=#7e7e7e%// Print a message to the LCD.
lcd.%color=#cc6600%print%%(%color=#006699%"hello, world!"%%);
}

%color=#cc6600%void%% %color=#cc6600%'''loop'''%%() {
%color=#7e7e7e%// Turn off the display:
lcd.noDisplay();
%color=#cc6600%delay%%(500);
%color=#7e7e7e%// Turn on the display:
lcd.display();
%color=#cc6600%delay%%(500);
}

(:divend:)

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