Arduino home automation project 01 (Bluetooth HC - 06 )

Arduino home automation project 

char val;
void setup() {
  pinMode(2,OUTPUT);
  pinMode(3,OUTPUT);
  pinMode(4,OUTPUT);
  pinMode(5,OUTPUT);
  pinMode(6,OUTPUT);
  pinMode(7,OUTPUT);
  pinMode(8,OUTPUT);
  pinMode(9,OUTPUT);
  pinMode(10,OUTPUT);
  pinMode(11,OUTPUT);
  Serial.begin(9600);
  
}

void loop() {
  if(Serial.available()){
   val= Serial.read();
  Serial.println(val);
}
if(val=='A'){
  digitalWrite(2,HIGH);
}
else if (val=='a'){
  digitalWrite(2, LOW);
}
//delay(100);


 if(val=='3'){
  digitalWrite(3,HIGH);
}
else if (val=='4'){
  digitalWrite(3, LOW);
}
//delay(100);

 if(val=='3'){
  digitalWrite(4,HIGH);
}
else if (val=='0'){
  digitalWrite(4, LOW);
}
//delay(100);

 if(val=='7'){
  digitalWrite(4,HIGH);
}
else if (val=='8'){
  digitalWrite(4, LOW);
}
//delay(100);
 // put your main code here, to run repeatedly:

}