int val =  5;

void setup() {
  // put your setup code here, to run once:
Serial.begin(9600);
Serial.println(val, BIN);
pinMode(2, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
//Serial.print(bitRead(val, 3));
//delay(1000);
//Serial.print(bitRead(val, 2));
//delay(1000);
//Serial.print(bitRead(val, 1));
//delay(1000);
//Serial.print(bitRead(val, 0));
//delay(1000);

start_mark();
digitalWrite(2,bitRead(val, 3));
delay(1000);
comma_flash();
digitalWrite(2,bitRead(val, 2));
delay(1000);
comma_flash();
digitalWrite(2,bitRead(val, 1));
delay(1000);
comma_flash();
digitalWrite(2,bitRead(val, 0));
delay(1000);
comma_flash();
end_mark();
}

void start_mark(){
 digitalWrite(2, HIGH);
 delay(2000);
 digitalWrite(2, LOW);
 delay(1000);
}

void end_mark(){
 digitalWrite(2, HIGH);
 delay(1000);
 digitalWrite(2, LOW);
 delay(2000);
}

void comma_flash(){
  digitalWrite(2, HIGH);
  delay(200);
  digitalWrite(2, LOW);
  delay(200);
}