LCD1602 Scrolling Display with I2C Communication

1//Compatible with the Arduino IDE 1.0
2//Library version:1.1
3//Code  by Dana Dietz with the help of Jeremy Blum, Sunfounder and others who wrote lcd  code
4//My first code using I2C
5//LCD 1602A with backpack PCF85724T (I2C)
6//This  example shows you how to use the LCD with an I2C backpack
7//It shows you how  the I2C only accepts one bit at a time by printing only the first character of an  array
8//It then shows you how to print several characters at once either staying  in one position, or scrolling, in this case, to the left
9
10#include <Wire.h>  //wire library
11#include <LiquidCrystal_I2C.h> //liquid crystal with I2C library
12
13LiquidCrystal_I2C  lcd(0x27, 16, 2); // set the LCD address to 0x27 for a 16 chars and 2 line display
14
15char  array1[] = "Hello!     "; //an array to print on line 0
16char array2[] = "You  did it!"; //an array to print on line 1
17char array3[] = "Oops!           ";
18char  array4[] = "1 Bit at a time!";
19
20
21void setup()
22{
23  lcd.init();                      //  initialize the lcd
24
25  lcd.backlight(); //Turn on backlight
26
27
28}
29
30void  loop()
31{
32  //show that I2C only accepts one byte at a time
33  lcd.setCursor(0,  0); //set cursor at top left
34  lcd.print(array1);//will only print the first  letter of the array
35  lcd.setCursor(0, 1); //set cursor at left space on 2nd  row
36  lcd.print(array2);//will only print the first letter of the array
37  delay(2000);
38
39  lcd.clear();
40  lcd.setCursor(0, 0);
41  for ( int positionCounter1 = 0; positionCounter1  < 17; positionCounter1++)
42  {
43
44    lcd.print(array3[positionCounter1]);  //prints a 17 character array without scrolling
45    delay(250);
46
47  }
48
49  {
50    lcd.setCursor(0, 1);
51    for (int positionCounter2 = 0; positionCounter2  < 17; positionCounter2++)
52    {
53      lcd.print(array4[positionCounter2]);//prints  a 17 character or array without scrolling
54    }
55    delay(3000);
56    lcd.clear();
57  }
58  {
59    lcd.setCursor(15, 0); // set the cursor to column 15, line 0
60    for ( int positionCounter1 = 0; positionCounter1 < 11; positionCounter1++)
61    {
62      lcd.scrollDisplayLeft();  //Scrolls the contents of the display one  space to the left.
63      lcd.print(array1[positionCounter1]);  // Print 12 character  array
64      delay(500);   
65    }
66    delay(1000);
67    lcd.clear();  //Clears  the LCD screen and positions the cursor in the upper-left corner.
68
69    lcd.setCursor(15,  1); // set the cursor to column 15, line 1
70    for (int positionCounter2 = 0;  positionCounter2 < 11; positionCounter2++)
71    {
72      lcd.scrollDisplayLeft();  //Scrolls the contents of the display one space to the left.
73      lcd.print(array2[positionCounter2]);  // Print a message to the LCD.
74      delay(500);  
75    }
76    delay(5000);
77  }
78  lcd.clear();  //Clears the LCD screen and positions the cursor in the upper-left  corner.
79}
80