//    This file turn single leds on rows at the 8x8 DotMatrix  
//       connect  CS --> D10, CLK --> D11, DIN --> D12
//    on this site you can drow any thing you want to display 
//    http://xantorohara.github.io/led-matrix-editor/
// -----------------------------------------------------------------
#include <LedControl.h>
LedControl lc=LedControl(12,11,10,1);

int i, delaytime=500;

byte SadSmile[8]= 
{
 0b00000000,
  0b01100110,
  0b01100110,
  0b00000000,
  0b00011000,
  0b00100100,
  0b01000010,
  0b01000010,
};

// byte EmptyHeart[8]={B01100110,B10011001,B10000001,B10000001,
//                     B01000010,B00100100,B00011000,B00000000 };

byte HappySmile[8]=
{
   0b00000000,
  0b01100110,
  0b01100110,
  0b00000000,
  0b01000010,
  0b01000010,
  0b00100100,
  0b00011000
};

void setup()
{
    //The MAX72XX is in power-saving mode on startup,
    lc.shutdown(0,false);   // wakeup The MAX7219
    lc.setIntensity(0,8);   // Set brightness to a medium value 
    lc.clearDisplay(0);     // Clear the display  
}

void loop()
{
    for(i=0; i<8; i++)
      lc.setRow(0,i,SadSmile[i]);
    delay(delaytime);
    
    for(i=0; i<8; i++)
      lc.setRow(0,i,HappySmile[i]);
    delay(delaytime);
}