MAX7219 with Arduino UNO - LED control doesn't work I'm very new to Arduino and this is my first project, so I may misunderstand something simple.

As a hardware I'm using 4 MAX7219 connected to Arduino UNO and a single diod for tests.

As a software I have Waoyda's LedControl 1.06 for MAX72XX.

It seems, I'm completely missing something, because with the code below, the diod is never lit, regardless on matrix position it is connected to.

#include "LedControl.h"

LedControl lc=LedControl(12,11,10,4);

void setup() {
  int devices=lc.getDeviceCount();
  for(int address=0;address&lt;devices;address++) {
    lc.shutdown(address,false);
    lc.setIntensity(address,8)
    lc.clearDisplay(address);
  }
}

void loop() { 
  int devices=lc.getDeviceCount();

  for(int row=0;row&lt;8;row++) {
    for(int col=0;col&lt;8;col++) {
      for(int address=0;address&lt;devices;address++) {
        lc.setLed(address,row,col,true);
      }
    }
  }
}


Some high res photos: 1, 2, 3

UPD: scheme added.
OMG, the only problem was a typo in LedController initialisation! I used LedControl lc=LedControl(12,11,10,4); instead for LedControl lc=LedControl(11,12,10,4);. It seems the library has no error detection if passed data pin isn't really a data pin. Now everything works fine.