LED Cascade
/*H********************************************************************
 MAX72xx LedControl
 ***** These pin numbers will probably not work with your hardware *****
 pin 12 is connected to DataIn 
 pin 11 is connected to CLK 
 pin 10 is connected to LOAD 
 ***** Please set number of devices you have *****
 But maximum default of 8 MAX72XX wil also work.
**********************************************************************/
#include "LedControl.h"           // HAVE TO INCLUDE LIBRARY

//************************* DEFINES ************************************

//************************* PROTOTYPES ************************************

//************************* VARIABLES ************************************
LedControl Lctl = LedControl( 12, 11, 10, 8 );
unsigned long DlyTim = 500;             // WAIT A BIT BETWEEN DSPLY UPDTS

/*F********************************************************************
* Cascaded LED Matrices:
have more than one device.  But all of them have to be initialized individually.
**********************************************************************/
void 
setup() 
{
    // ALREADY SET DEVICES COUNT WHEN CREATED LEDCONTROl
    int devices = Lctl.getDeviceCount();
    // HAVE TO INIT DEVICES IN LOOP
    for( int address =0; address < devices; address++ ) 
    {                             // MAX72XX IN POWER-SAVING MODE ON STARTUP
        Lctl.shutdown( address, false ); 
        Lctl.setIntensity( address, 8);      // SET BRIGHTNESS TO MEDIUM VALUE
        Lctl.clearDisplay( address );                     // AND CLEAR DISPLAY
    }
}
/*F********************************************************************
*
**********************************************************************/
void 
loop() 
{ 
    int devices = Lctl.getDeviceCount();       // READ NUMBER CASCADED DEVICES
    for( int row =0; row < 8; row++)             // INIT ALL DEVICES IN LOOP
    {
        for( int col =0; col < 8; col++) 
        {
            for( int address =0; address < devices; address++) 
            {
                delay( DlyTim );
                Lctl.setLed( address, row, col, true );
                delay( DlyTim );
                Lctl.setLed( address, row, col, false );
            }
        }
    }
}