Arduino - Blinking LED using Arduino coding and displaying the initials of our name.

Code and Video for the same could be found below

Learnings-Ciruiting many LEDs together in a grid matrix format of 3x3 and figuring out the alphabets to blink the certain number of led at once.

Circuiting layout

Code for the experiment

int ledPin1 = 2;
int ledPin2 = 3;
int ledPin3 = 4;
int ledPin4 = 5;
int ledPin5 = 6;
int ledPin6 = 7;
int ledPin7 = 8;
int ledPin8 = 9;
int ledPin9 = 10;
int buttonApin = 11;
int buttonBpin = 12;
int duration=1000;

char letter = 0;
int n=5;

void setup() 
{
    // initialize serial communication at 9600 bits per second:
  Serial.begin(9600);

pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  pinMode(ledPin3, OUTPUT);
  pinMode(ledPin4, OUTPUT);
  pinMode(ledPin5, OUTPUT);
  pinMode(ledPin6, OUTPUT);
  pinMode(ledPin7, OUTPUT);
  pinMode(ledPin8, OUTPUT);
  pinMode(ledPin9, OUTPUT);
  pinMode(buttonApin, INPUT_PULLUP);  
  pinMode(buttonBpin, INPUT_PULLUP);  
}

void loop() {

if (digitalRead(buttonApin) == LOW)
{
   {
    S();
    delay(duration);
     W();
    delay(duration);
    A();
    delay(duration);
     T();
    delay(duration);
      I();
    delay(duration);
     Z();
    delay(duration);
      U();
    delay(duration);
      A();
    delay(duration);
      L();
    delay(duration);
      A();
    delay(duration);
  }

if (digitalRead(buttonBpin) == LOW)
  {
    for(int n= 0; n<5; n++)
    {
      ALLUP();
      delay(duration);
      ALLDOWN();
      delay(duration);
    }
  }
}
  if (Serial.available() > 0) {    // is a character available?
    letter = Serial.read();       // get the character
  
    // check if a number was received
        if (letter == 'S') {
      Serial.print("Letter received = ");
      Serial.println(letter);
      S();/*letter S*/
      delay(duration);
    }
      if (letter == 'W') {
      Serial.print("Letter received = ");
      Serial.println(letter);
      W();/*letter W*/
      delay(duration);
    }
            if (letter == 'A') {
      Serial.print("Letter received = ");
      Serial.println(letter);
      A();/*letter A*/
      delay(duration);
    }
       if (letter == 'T') {
      Serial.print("Letter received = ");
      Serial.println(letter);
      T();/*letter T*/
      delay(duration);
    }
       if (letter == 'I') {
      Serial.print("Letter received = ");
      Serial.println(letter);
      I();/*letter I*/
      delay(duration);
    }

if (letter == 'Z') {
      Serial.print("Letter received = ");
      Serial.println(letter);
      Z();/*letter Z*/
      delay(duration);
    }
     if (letter == 'U') {
      Serial.print("Letter received = ");
      Serial.println(letter);
      U();/*letter U*/
      delay(duration);
    }
     if (letter == 'A') {
      Serial.print("Letter received = ");
      Serial.println(letter);
      A();/*letter A*/
      delay(duration);
   }  
    if (letter == 'L') {
      Serial.print("Letter received = ");
      Serial.println(letter);
      L();/*letter L*/
      delay(duration);
    }
     if (letter == 'A') {
      Serial.print("Letter received = ");
      Serial.println(letter);
      A();/*letter A*/
      delay(duration);
     } 
  }
  }

void S(){
    digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, HIGH);
    digitalWrite(ledPin3, HIGH);
    digitalWrite(ledPin4, LOW);
    digitalWrite(ledPin5, HIGH);
    digitalWrite(ledPin6, LOW);
    digitalWrite(ledPin7, HIGH);
    digitalWrite(ledPin8, HIGH);
    digitalWrite(ledPin9, HIGH);
}
void W(){
    digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, LOW);
    digitalWrite(ledPin3, HIGH);
    digitalWrite(ledPin4, HIGH);
    digitalWrite(ledPin5, HIGH);
    digitalWrite(ledPin6, HIGH);
    digitalWrite(ledPin7, HIGH);
    digitalWrite(ledPin8, LOW);
    digitalWrite(ledPin9, HIGH);
}
void T(){
    digitalWrite(ledPin1, LOW);
    digitalWrite(ledPin2, HIGH);
    digitalWrite(ledPin3, LOW);
    digitalWrite(ledPin4, LOW);
    digitalWrite(ledPin5, HIGH);
    digitalWrite(ledPin6, LOW);
    digitalWrite(ledPin7, HIGH);
    digitalWrite(ledPin8, HIGH);
    digitalWrite(ledPin9, HIGH);
}
void I(){
    digitalWrite(ledPin1, LOW);
    digitalWrite(ledPin2, HIGH);
    digitalWrite(ledPin3, LOW);
    digitalWrite(ledPin4, LOW);
    digitalWrite(ledPin5, HIGH);
    digitalWrite(ledPin6, LOW);
    digitalWrite(ledPin7, LOW);
    digitalWrite(ledPin8, HIGH);
    digitalWrite(ledPin9, LOW);
}

void A(){
    digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, LOW);
    digitalWrite(ledPin3, HIGH);
    digitalWrite(ledPin4, HIGH);
    digitalWrite(ledPin5, HIGH);
    digitalWrite(ledPin6, HIGH);
    digitalWrite(ledPin7, LOW);
    digitalWrite(ledPin8, HIGH);
    digitalWrite(ledPin9, LOW);
}
void Z(){
    digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, HIGH);
    digitalWrite(ledPin3, HIGH);
    digitalWrite(ledPin4, LOW);
    digitalWrite(ledPin5, HIGH);
    digitalWrite(ledPin6, LOW);
    digitalWrite(ledPin7, HIGH);
    digitalWrite(ledPin8, HIGH);
    digitalWrite(ledPin9, HIGH);
}
void U(){
    digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, HIGH);
    digitalWrite(ledPin3, HIGH);
    digitalWrite(ledPin4, HIGH);
    digitalWrite(ledPin5, LOW);
    digitalWrite(ledPin6, HIGH);
    digitalWrite(ledPin7, HIGH);
    digitalWrite(ledPin8, LOW);
    digitalWrite(ledPin9, HIGH);
}
void L(){
    digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, HIGH);
    digitalWrite(ledPin3, HIGH);
    digitalWrite(ledPin4, LOW);
    digitalWrite(ledPin5, LOW);
    digitalWrite(ledPin6, HIGH);
    digitalWrite(ledPin7, LOW);
    digitalWrite(ledPin8, LOW);
    digitalWrite(ledPin9, HIGH);
}
void ALLUP(){
    digitalWrite(ledPin1, HIGH);
    digitalWrite(ledPin2, HIGH);
    digitalWrite(ledPin3, HIGH);
    digitalWrite(ledPin4, HIGH);
    digitalWrite(ledPin5, HIGH);
    digitalWrite(ledPin6, HIGH);
    digitalWrite(ledPin7, HIGH);
    digitalWrite(ledPin8, HIGH);
    digitalWrite(ledPin9, HIGH);
}

void ALLDOWN(){
    digitalWrite(ledPin1, LOW);
    digitalWrite(ledPin2, LOW);
    digitalWrite(ledPin3, LOW);
    digitalWrite(ledPin4, LOW);
    digitalWrite(ledPin5, LOW);
    digitalWrite(ledPin6, LOW);
    digitalWrite(ledPin7, LOW);
    digitalWrite(ledPin8, LOW);
    digitalWrite(ledPin9, LOW);
}

Video link