int neg1 = 13;  //"neg1" is connected to the 13th digital pin of arduino
int neg2 = 12;  //"neg2" is connected to the 12th digital pin of arduino
int neg3 = 11;  //"neg3" is connected to the 11th digital pin of arduino
int neg4 = 10;  //"neg4" is connected to the 10th digital pin of arduino
int neg5 = 9;   //"neg5" is connected to the 9th digital pin of arduino
int neg6 = 8;   //"neg6" is connected to the 8th digital pin of arduino
int neg7 = 7;   //"neg7" is connected to the 7th digital pin of arduino
int neg8 = 6;   //"neg8" is connected to the 6th digital pin of arduino
int neg9 = 5;   //"neg9" is connected to the 5th digital pin of arduino

int pos1 = 4;   //"pos1" is connected to the 4th digital pin of arduino
int pos2 = 3;   //"pos2" is connected to the 3rd digital pin of arduino
int pos3 = 2;   //"pos3" is connected to the 2nd digital pin of arduino

int delay_time=200, j=0;

// the setup routine runs once when you press reset:
void setup() {                
  // initialize the digital pin as an output.
  pinMode(neg1, OUTPUT);     
  pinMode(neg2, OUTPUT);     
  pinMode(neg3, OUTPUT);     
  pinMode(neg4, OUTPUT);     
  pinMode(neg5, OUTPUT);     
  pinMode(neg6, OUTPUT);     
  pinMode(neg7, OUTPUT);     
  pinMode(neg8, OUTPUT);     
  pinMode(neg9, OUTPUT);  
  
  pinMode(pos1, OUTPUT);     
  pinMode(pos2, OUTPUT);     
  pinMode(pos3, OUTPUT);   


    for (int a=5;a<14;a++)
    {
        pinMode(a,OUTPUT);    // PINS0-10 are set as output
    }

    digitalWrite(2,HIGH);    //pull up the 2 pin
    digitalWrite(3,HIGH);   // pull up the 3 pin
    digitalWrite(4,HIGH);   // pull up the 4 pin  
}

// the loop routine runs over and over again forever:
void loop() {

 
          for (int a=5;a<14;a++)
          {
            digitalWrite(pos3,LOW);    //layer 1 of cube is grounded
              digitalWrite(a,HIGH);    //turn ON each LED one after another in layer1
               delay(200);
            digitalWrite(a,LOW);
          }
       digitalWrite(pos3,HIGH);    //layer1 is pulled up

          digitalWrite(pos2,LOW);   // layer 2 of cube is grounded
          for (int a=5;a<14;a++)
          {
              digitalWrite(a,HIGH);   // turn ON each LED one after another in layer2
                            delay(200);
              digitalWrite(a,LOW);
          }
       digitalWrite(pos2,HIGH);    // layer2 is pulled up

        digitalWrite(pos1,LOW);    // layer 3 of cube is grounded
        for (int a=5;a<14;a++)
        {
            digitalWrite(a,HIGH);    // turn ON each LED one after another in layer3
                          delay(200);
            digitalWrite(a,LOW);
        }
        digitalWrite(pos1,HIGH);    // layer3 is pulled up


  for(j=0;j<6;j++)
  {
    digitalWrite(pos1, HIGH);
    digitalWrite(pos2, HIGH);
    digitalWrite(pos3, LOW);
  
    digitalWrite(neg1, LOW);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, HIGH);
    digitalWrite(neg4, LOW);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, HIGH);
    digitalWrite(neg7, LOW);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, HIGH);
    
    delay(200);

     digitalWrite(pos1, HIGH);
    digitalWrite(pos2, LOW);
    digitalWrite(pos3, HIGH);

    digitalWrite(neg1, LOW);
    digitalWrite(neg2, HIGH);
    digitalWrite(neg3, LOW);
    digitalWrite(neg4, LOW);
    digitalWrite(neg5, HIGH);
    digitalWrite(neg6, LOW);
    digitalWrite(neg7, LOW);
    digitalWrite(neg8, HIGH);
    digitalWrite(neg9, LOW);

   delay(200);

 digitalWrite(pos1, LOW);
    digitalWrite(pos2, HIGH);
    digitalWrite(pos3, HIGH);
    
    digitalWrite(neg1, HIGH);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, LOW);
    digitalWrite(neg4, HIGH);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, LOW);
    digitalWrite(neg7, HIGH);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, LOW);
    delay(200);

     digitalWrite(pos1, HIGH);
    digitalWrite(pos2, LOW);
    digitalWrite(pos3, HIGH);


    digitalWrite(neg1, HIGH);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, LOW);
    digitalWrite(neg4, HIGH);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, LOW);
    digitalWrite(neg7, HIGH);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, LOW);
    delay(200);
   
    digitalWrite(pos1, HIGH);
    digitalWrite(pos2, HIGH);
    digitalWrite(pos3, LOW);

    digitalWrite(neg1, HIGH);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, LOW);
    digitalWrite(neg4, HIGH);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, LOW);
    digitalWrite(neg7, HIGH);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, LOW);

delay(200);

 digitalWrite(pos1, HIGH);
    digitalWrite(pos2, LOW);
    digitalWrite(pos3, HIGH);

    digitalWrite(neg1, LOW);
    digitalWrite(neg2, HIGH);
    digitalWrite(neg3, LOW);
    digitalWrite(neg4, LOW);
    digitalWrite(neg5, HIGH);
    digitalWrite(neg6, LOW);
    digitalWrite(neg7, LOW);
    digitalWrite(neg8, HIGH);
    digitalWrite(neg9, LOW);

delay(200);

 digitalWrite(pos1, LOW);
    digitalWrite(pos2, HIGH);
    digitalWrite(pos3, HIGH);
    
    digitalWrite(neg1, LOW);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, HIGH);
    digitalWrite(neg4, LOW);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, HIGH);
    digitalWrite(neg7, LOW);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, HIGH);
delay(200);
    
    digitalWrite(pos1, HIGH);
    digitalWrite(pos2, LOW);
    digitalWrite(pos3, HIGH);

    digitalWrite(neg1, LOW);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, HIGH);
    digitalWrite(neg4, LOW);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, HIGH);
    digitalWrite(neg7, LOW);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, HIGH);
    
  delay(200);


    digitalWrite(pos1, HIGH);
    digitalWrite(pos2, HIGH);
    digitalWrite(pos3, LOW);

    digitalWrite(neg1, LOW);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, HIGH);
    digitalWrite(neg4, LOW);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, HIGH);
    digitalWrite(neg7, LOW);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, HIGH);
    
    delay(200);

      digitalWrite(pos1, HIGH);
    digitalWrite(pos2, HIGH);
    digitalWrite(pos3, LOW);
  
    digitalWrite(neg1, LOW);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, HIGH);
    digitalWrite(neg4, LOW);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, HIGH);
    digitalWrite(neg7, LOW);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, HIGH);
    
    delay(200);

     digitalWrite(pos1, HIGH);
    digitalWrite(pos2, LOW);
    digitalWrite(pos3, HIGH);

    digitalWrite(neg1, LOW);
    digitalWrite(neg2, HIGH);
    digitalWrite(neg3, LOW);
    digitalWrite(neg4, LOW);
    digitalWrite(neg5, HIGH);
    digitalWrite(neg6, LOW);
    digitalWrite(neg7, LOW);
    digitalWrite(neg8, HIGH);
    digitalWrite(neg9, LOW);

    delay(200);

 digitalWrite(pos1, LOW);
    digitalWrite(pos2, HIGH);
    digitalWrite(pos3, HIGH);
    
    digitalWrite(neg1, HIGH);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, LOW);
    digitalWrite(neg4, HIGH);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, LOW);
    digitalWrite(neg7, HIGH);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, LOW);
delay(200);

     digitalWrite(pos1, HIGH);
    digitalWrite(pos2, LOW);
    digitalWrite(pos3, HIGH);


    digitalWrite(neg1, HIGH);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, LOW);
    digitalWrite(neg4, HIGH);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, LOW);
    digitalWrite(neg7, HIGH);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, LOW);
    delay(200);
   
    digitalWrite(pos1, HIGH);
    digitalWrite(pos2, HIGH);
    digitalWrite(pos3, LOW);

    digitalWrite(neg1, HIGH);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, LOW);
    digitalWrite(neg4, HIGH);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, LOW);
    digitalWrite(neg7, HIGH);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, LOW);

delay(200);

 digitalWrite(pos1, HIGH);
    digitalWrite(pos2, LOW);
    digitalWrite(pos3, HIGH);

    digitalWrite(neg1, LOW);
    digitalWrite(neg2, HIGH);
    digitalWrite(neg3, LOW);
    digitalWrite(neg4, LOW);
    digitalWrite(neg5, HIGH);
    digitalWrite(neg6, LOW);
    digitalWrite(neg7, LOW);
    digitalWrite(neg8, HIGH);
    digitalWrite(neg9, LOW);

delay(200);

 digitalWrite(pos1, LOW);
    digitalWrite(pos2, HIGH);
    digitalWrite(pos3, HIGH);
    
    digitalWrite(neg1, LOW);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, HIGH);
    digitalWrite(neg4, LOW);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, HIGH);
    digitalWrite(neg7, LOW);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, HIGH);
delay(200);
    
    digitalWrite(pos1, HIGH);
    digitalWrite(pos2, LOW);
    digitalWrite(pos3, HIGH);

    digitalWrite(neg1, LOW);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, HIGH);
    digitalWrite(neg4, LOW);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, HIGH);
    digitalWrite(neg7, LOW);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, HIGH);
    
    delay(200);


    digitalWrite(pos1, HIGH);
    digitalWrite(pos2, HIGH);
    digitalWrite(pos3, LOW);

    digitalWrite(neg1, LOW);
    digitalWrite(neg2, LOW);
    digitalWrite(neg3, HIGH);
    digitalWrite(neg4, LOW);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, HIGH);
    digitalWrite(neg7, LOW);
    digitalWrite(neg8, LOW);
    digitalWrite(neg9, HIGH);
    
    delay(200);

















    

       
  }
}