LCD4484 shield examples

Following on from the LCD 4484 shield introduction, we will present some more basic examples using this shield

This is another example using the LCD4484 shield, this time put a character on the screen and then move it across the screen.

Code

#include "LCD4884.h"
void setup()
{
//initialise and clear
lcd.LCD_init();
lcd.LCD_clear();
}
void loop()
{
char line=0, pos=0;
//clear the LCD
lcd.LCD_clear();
//pause for 1 second
delay(1000);
//go to position 0,0
lcd.LCD_set_XY(pos,line);
//loop until x position is 55
while (pos<=55)
{
//move to LCD position
lcd.LCD_set_XY(pos,line);
//write a character to LCD
lcd.LCD_prop_write_char('a', MENU_NORMAL);
//increment by 1
pos++;
//pause for 100 milliseconds
delay(100);
}
//1 second delay
delay(1000);
}

Display a character on the display in a random location.

Code

#include "LCD4884.h"
void setup()
{
//initialise and clear
Serial.begin(9600);
// if analog input pin 0 is unconnected, random analog
// noise will cause the call to randomSeed() to generate
// different seed numbers each time the sketch runs.
// randomSeed() will then shuffle the random function.
randomSeed(analogRead(0));
lcd.LCD_init();
lcd.LCD_clear();
}
void loop()
{
long randomX, randomY;
//random number between 0 and 84
randomX = random(0,84);
//random number between 0 and 4
randomY = random(0,4);
//clear the LCD
lcd.LCD_clear();
//pause for 1 second
delay(1000);
//move to LCD position
lcd.LCD_set_XY(randomX,randomY);
//write a character to LCD
lcd.LCD_prop_write_char('a', MENU_NORMAL);
//1 second delay
delay(1000);
}

Flash the backlight and display lines of text

#include <LCD4884.h>
int delayValue=200;
void setup()
{
  lcd.LCD_init(); // creates instance of LCD
  lcd.LCD_clear(); // blank the display
  pinMode(7, OUTPUT);
}
void loop()
{
  //flash the back light
  for (int a=0; a<5; a++)
  {
    digitalWrite(7, LOW);
    delay(delayValue);
    digitalWrite(7, HIGH);
    delay(delayValue);
  }
  //fill every line with sample text
  for (int a=0; a<6; a++)
  {
    lcd.LCD_write_string(0,a,"01234567980123", MENU_NORMAL); // ignore MENU_NORMAL for now
    delay(delayValue);
  }
  delay(delayValue);
}
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Write big numbers on the LCD
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#include <LCD4884.h>
void setup()
{
  lcd.LCD_init(); // creates instance of LCD
  lcd.LCD_clear(); // blank the display
  pinMode(7, OUTPUT);
}
void loop()
{
  //flash the back light
  lcd.LCD_write_string_big(0, 0, "012345", MENU_NORMAL);
  lcd.LCD_write_string_big(0, 3, "67890", MENU_NORMAL);
  delay(1000);
}

Links

Download Link for library

Amazon US link – SainSmart Graphic LCD4884 Shield for Arduino

Amazon UK link – ATmega2560 + Graphic LCD4884 Shield for Arduino