/*written by Kits Tech PERFECTLY_UNSTABLE 
have leds count to 15 in binary connected to pins 13,12,11,10
this was easy but too involved i know there's a better way but I'm only getting started.
*/

void setup() {
  pinMode(13,OUTPUT);
  pinMode(12,OUTPUT);
  pinMode(11,OUTPUT);
  pinMode(10,OUTPUT);
}

void loop() {
  //0
  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(500);
//1
  digitalWrite(13,HIGH);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//2
  digitalWrite(13,LOW);
  digitalWrite(12,HIGH);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//3
  digitalWrite(13,HIGH);
  digitalWrite(12,HIGH);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//4
  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,HIGH);
  digitalWrite(10,LOW);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//5
  digitalWrite(13,HIGH);
  digitalWrite(12,LOW);
  digitalWrite(11,HIGH);
  digitalWrite(10,LOW);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//6
  digitalWrite(13,LOW);
  digitalWrite(12,HIGH);
  digitalWrite(11,HIGH);
  digitalWrite(10,LOW);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//7
  digitalWrite(13,HIGH);
  digitalWrite(12,HIGH);
  digitalWrite(11,HIGH);
  digitalWrite(10,LOW);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//8
  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,HIGH);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//9
  digitalWrite(13,HIGH);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,HIGH);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//10
  digitalWrite(13,LOW);
  digitalWrite(12,HIGH);
  digitalWrite(11,LOW);
  digitalWrite(10,HIGH);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//11
  digitalWrite(13,HIGH);
  digitalWrite(12,HIGH);
  digitalWrite(11,LOW);
  digitalWrite(10,HIGH);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//12
  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,HIGH);
  digitalWrite(10,HIGH);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//13
  digitalWrite(13,HIGH);
  digitalWrite(12,LOW);
  digitalWrite(11,HIGH);
  digitalWrite(10,HIGH);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//14
  digitalWrite(13,LOW);
  digitalWrite(12,HIGH);
  digitalWrite(11,HIGH);
  digitalWrite(10,HIGH);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);
//15
  digitalWrite(13,HIGH);
  digitalWrite(12,HIGH);
  digitalWrite(11,HIGH);
  digitalWrite(10,HIGH);
  delay(500);

  digitalWrite(13,LOW);
  digitalWrite(12,LOW);
  digitalWrite(11,LOW);
  digitalWrite(10,LOW);
  delay(50);

  //staring over with a chaser
  digitalWrite(13,HIGH);
  delay(500);
  digitalWrite(13,LOW);
  delay(5);
  digitalWrite(12,HIGH);
  delay(500);
  digitalWrite(12,LOW);
  delay(5);
  digitalWrite(11,HIGH);
  delay(500);
  digitalWrite(11,LOW);
  delay(5);
  digitalWrite(10,HIGH);
  delay(500);
  digitalWrite(10,LOW);
  delay(5);

/*there had to be an easier way*/
}