Arduino Program to Turn on Diagonal LEDs of 3*3*3 LED Cube (Part 10 of 10)

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Arduino program to turn on diagonal LEDs only (Part 3 of 3)

This will give the expected output as shown below.

Arduino program to turn on diagonal LEDs only. Upload this program to your arduino board.

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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 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);     
}

// the loop routine runs over and over again forever:
void loop() {
 
  // Will turn on LED connected to "pos1" and "neg1"
  for(j=0;j<20;j++)
  {
    digitalWrite(pos1, HIGH);
    digitalWrite(pos2, LOW);
    digitalWrite(pos3, LOW);
  
    digitalWrite(neg1, LOW);
    digitalWrite(neg2, HIGH);
    digitalWrite(neg3, HIGH);
    digitalWrite(neg4, HIGH);
    digitalWrite(neg5, HIGH);
    digitalWrite(neg6, HIGH);
    digitalWrite(neg7, HIGH);
    digitalWrite(neg8, HIGH);
    digitalWrite(neg9, HIGH);
  }
  
  //Turn off all LEDs
  digitalWrite(pos1, LOW);
  digitalWrite(pos2, LOW);
  digitalWrite(pos3, LOW);
  
  digitalWrite(neg1, HIGH);
  digitalWrite(neg2, HIGH);
  digitalWrite(neg3, HIGH);
  digitalWrite(neg4, HIGH);
  digitalWrite(neg5, HIGH);
  digitalWrite(neg6, HIGH);
  digitalWrite(neg7, HIGH);
  digitalWrite(neg8, HIGH);
  digitalWrite(neg9, HIGH);
    
  // Will turn on LED connected to "pos2" and "neg5"    
  for(j=0;j<20;j++)
  {    
    digitalWrite(pos1, LOW);
    digitalWrite(pos2, HIGH);
    digitalWrite(pos3, LOW);
  
    digitalWrite(neg1, HIGH);
    digitalWrite(neg2, HIGH);
    digitalWrite(neg3, HIGH);
    digitalWrite(neg4, HIGH);
    digitalWrite(neg5, LOW);
    digitalWrite(neg6, HIGH);
    digitalWrite(neg7, HIGH);
    digitalWrite(neg8, HIGH);
    digitalWrite(neg9, HIGH);
  }

  // Turn off all LEDs    
  digitalWrite(pos1, LOW);
  digitalWrite(pos2, LOW);
  digitalWrite(pos3, LOW);
  
  digitalWrite(neg1, HIGH);
  digitalWrite(neg2, HIGH);
  digitalWrite(neg3, HIGH);
  digitalWrite(neg4, HIGH);
  digitalWrite(neg5, HIGH);
  digitalWrite(neg6, HIGH);
  digitalWrite(neg7, HIGH);
  digitalWrite(neg8, HIGH);
  digitalWrite(neg9, HIGH);
  
  // Will turn on LED connected to "pos3" and "neg9"
  for(j=0;j<20;j++)
  {
    
    digitalWrite(pos1, LOW);
    digitalWrite(pos2, LOW);
    digitalWrite(pos3, HIGH);
  
    digitalWrite(neg1, HIGH);
    digitalWrite(neg2, HIGH);
    digitalWrite(neg3, HIGH);
    digitalWrite(neg4, HIGH);
    digitalWrite(neg5, HIGH);
    digitalWrite(neg6, HIGH);
    digitalWrite(neg7, HIGH);
    digitalWrite(neg8, HIGH);
    digitalWrite(neg9, LOW);
  }
    
  // Turn off all LEDs  
  digitalWrite(pos1, LOW);
  digitalWrite(pos2, LOW);
  digitalWrite(pos3, LOW);
  
  digitalWrite(neg1, HIGH);
  digitalWrite(neg2, HIGH);
  digitalWrite(neg3, HIGH);
  digitalWrite(neg4, HIGH);
  digitalWrite(neg5, HIGH);
  digitalWrite(neg6, HIGH);
  digitalWrite(neg7, HIGH);
  digitalWrite(neg8, HIGH);
  digitalWrite(neg9, HIGH);
}

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          If uploading is successful, diagonal LEDs will turn on and all other LEDs will turn off. Similarly, we can turn on any set of diagonal LEDs.

Next : Video Demonstration of 3*3*3 LED Cube >>>>