int led=2;
int buz=3;

int dotTime=250;
int dashTime=dotTime*3;
int spaceTime=dotTime;
int longspaceTime=dotTime*4;

char msg;

void dot(){
  digitalWrite(buz,HIGH);
  digitalWrite(led,HIGH);
  delay(dotTime);
  digitalWrite(buz,LOW);
  digitalWrite(led,LOW);
  space();
}

void dash(){
  digitalWrite(buz,HIGH);
  digitalWrite(led,HIGH);
  delay(dashTime);
  digitalWrite(buz,LOW);
  digitalWrite(led,LOW);
  space();
}

void space(){
  delay(spaceTime);
}

void longspace(){
  delay(longspaceTime);
}

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(led,OUTPUT);
  pinMode(buz,OUTPUT);
  Serial.println("What is you message");
}

void loop() {
  // put your main code here, to run repeatedly:
  while(Serial.available()==0){
    
  }
  msg=Serial.read();
  if(msg=='A'||msg=='a'){
    dot();
    dash();
  }

  else if(msg=='B'||msg=='b'){
    dash();
    dot();
    dot();
    dot();        
  }
  
  else if(msg=='C'||msg=='c'){
    dash();
    dot();
    dash();
    dot();        
  }

  else if(msg=='D'||msg=='d'){
    dash();
    dot();
    dot();        
  }

  else if(msg=='E'||msg=='e'){
    dot();        
  }

  else if(msg=='f'||msg=='F'){
    dot();
    dot(); 
    dash();
    dot();   
  }

  else if(msg=='G'||msg=='g'){
    dash(); 
    dash();
    dot();   
  }

  else if(msg=='H'||msg=='h'){
    dot();
    dot(); 
    dot();
    dot();   
  }
  
  else if(msg=='I'||msg=='i'){
    dot();
    dot();    
  }

  else if(msg=='J'||msg=='j'){
    dot();
    dash(); 
    dash();
    dash();  
  }

  else if(msg=='K'||msg=='k'){ 
    dash();
    dot(); 
    dash();  
  }

  else if(msg=='L'||msg=='l'){
    dot();
    dash();
    dot();
    dot();   
  }

  else if(msg=='M'||msg=='m'){
    dash();
    dash();  
  }

  else if(msg=='N'||msg=='n'){ 
    dash();
    dot();   
  }

  else if(msg=='O'||msg=='o'){
    dash();
    dash(); 
    dash();  
  }

  else if(msg=='P'||msg=='p'){
    dot();
    dash(); 
    dash();
    dot();   
  }

  else if(msg=='Q'||msg=='q'){
    dash();
    dash(); 
    dot();
    dash();   
  }

  else if(msg=='r'||msg=='R'){
    dot(); 
    dash();
    dot();   
  }

  else if(msg=='S'||msg=='s'){
    dot();
    dot(); 
    dot();   
  }

  else if(msg=='t'||msg=='T'){ 
    dash();   
  }

  else if(msg=='U'||msg=='u'){
    dot();
    dot(); 
    dash();   
  }

  else if(msg=='V'||msg=='v'){
    dot();
    dot();
    dot(); 
    dash();   
  }

  else if(msg=='W'||msg=='w'){
    dot();
    dash(); 
    dash();  
  }

  else if(msg=='X'||msg=='x'){
    dash();
    dot();
    dot(); 
    dash();
  }

  else if(msg=='y'||msg=='Y'){
    dash();
    dot(); 
    dash();
    dash();   
  }

  else if(msg=='Z'||msg=='z'){
    dash();
    dash(); 
    dot();
    dot();   
  }
  
  else if(msg==' ')
  {
    longspace();
  }
  space();
  space();
  space();
}