This sketch demonstrates how to use the Grove LCD RGB Backlight module.

06.12_-_Grove_LCD_RGB_Backlight_custom_chars.ino

/*  06.12 - Grove LCD RGB Backlight module, custom characters
 *   
   This sketch demonstrates how to use the Grove LCD RGB Backlight module.

   Specifically, it shows how to create and display custom characters.

   To create a custom character, you must draw it using pixels. Each character
   is drawn on a 8x5 pixel array (8 rows, 5 columns).

   For example, a smily emoji would looks like this ("x" is an "off" pixel, 
   and "o" is an "on" pixel):

   x x x x x
   x x x x x
   x o x o x
   x x x x x
   x x x x x
   o x x x o
   x o o o x
   x x x x x

   Then, you need to encode this pattern as an array of bytes. This array will 
   contain 8 bytes (one per row). Because we only need 5 pixels, we only need
   to specify the first 5 bits of each byte.

   The pattern of the smiley custom character becomes this array of bytes:

   byte smiley[8] = {
                        0b00000,
                        0b00000,
                        0b01010,
                        0b00000,
                        0b00000,
                        0b10001,
                        0b01110,
                        0b00000
    };

  Once you have created the custom character array, you can displayed on the LCD
  as per the example below.

   
   Components
   ----------
    
    - Grove Base Shield
    - An Arduino Uno compatible board (such as Arduino/Genuino Uno or Seeeduino)
    - Grove LCD RGB Backlight module
    - One Grove cable
    
    IDE
    ---
    
    Arduino IDE
    
    Libraries
    ---------
    
    - Wire.h (part of the Arduino IDE)
    - rgb_lcd.h (Get it from https://github.com/Seeed-Studio/Grove_LCD_RGB_Backlight)
    
    Connections
    -----------
    
    Use a Grove cable to connect the module to Base Shield connector D3.
    
    Other information
    -----------------
    
    - Use this sketch along side the video lecture 06.12 of Grove For Busy People
    - Grove documentation: http://wiki.seeedstudio.com/Grove-LCD_RGB_Backlight/
    - Grove component: https://txplo.re/0c9fb
    
    Github Gist
    -----------
    <script src="https://gist.github.com/futureshocked/519bf30590f167de0ab2fc678daaa85d.js"></script>

    https://gist.github.com/futureshocked/519bf30590f167de0ab2fc678daaa85d
        
    For course information, please go to https://techexplorations.com/product/grove-for-busy-people/
        
    Created on July 5 2019 by Peter Dalmaris
*/

/*
  CustomCharacter.ino
  2013 Copyright (c) Seeed Technology Inc.  All right reserved.

  Author:Loovee
  2013-9-18

  Grove - Serial LCD RGB Backlight demo.

  This library is free software; you can redistribute it and/or
  modify it under the terms of the GNU Lesser General Public
  License as published by the Free Software Foundation; either
  version 2.1 of the License, or (at your option) any later version.

  This library is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  Lesser General Public License for more details.

  You should have received a copy of the GNU Lesser General Public
  License along with this library; if not, write to the Free Software
  Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*/

#include <Wire.h>
#include "rgb_lcd.h"

rgb_lcd lcd;

// make some custom characters:
byte heart[8] = {
    0b00000,
    0b01010,
    0b11111,
    0b11111,
    0b11111,
    0b01110,
    0b00100,
    0b00000
};

byte smiley[8] = {
    0b00000,
    0b00000,
    0b01010,
    0b00000,
    0b00000,
    0b10001,
    0b01110,
    0b00000
};

byte frownie[8] = {
    0b00000,
    0b00000,
    0b01010,
    0b00000,
    0b00000,
    0b00000,
    0b01110,
    0b10001
};

byte armsDown[8] = {
    0b00100,
    0b01010,
    0b00100,
    0b00100,
    0b01110,
    0b10101,
    0b00100,
    0b01010
};

byte armsUp[8] = {
    0b00100,
    0b01010,
    0b00100,
    0b10101,
    0b01110,
    0b00100,
    0b00100,
    0b01010
};


void setup() 
{

    lcd.begin(16, 2);
 #if 1   
    // create a new character
    lcd.createChar(0, heart);
    // create a new character
    lcd.createChar(1, smiley);
    // create a new character
    lcd.createChar(2, frownie);
    // create a new character
    lcd.createChar(3, armsDown);
    // create a new character
    lcd.createChar(4, armsUp);
#endif 
    // set up the lcd's number of columns and rows:
    
    
    lcd.setCursor(0, 0);
    // Print a message to the lcd.
    lcd.print("I ");
    lcd.write((unsigned char)0);
    lcd.print(" Arduino! ");
    lcd.write((unsigned char)1);
}

void loop() 
{
    // set the cursor to the bottom row, 5th position:
    lcd.setCursor(4, 1);
    // draw the little man, arms down:
    lcd.write((unsigned char)3);
    delay(500);
    lcd.setCursor(4, 1);
    // draw him arms up:
    lcd.write((unsigned char)4);
    delay(500);
}