Knight Rider LED Pattern With Arduino

4 Things You Need

1. Arduino uno board
2. 10 Led
3. Resistors
4. Jumper wires

void setup() {
  // put your setup code here, to run once:

  for ( int k=4; k < 14; k++){

   pinMode(k , OUTPUT);
  }
}

void loop() {
  // put your main code here, to run repeatedly:

   int t = 15;

   for(int i= 4 ; i<14 ; i=i+1){
   digitalWrite(i , HIGH);
   delay(t);
   digitalWrite(i+1 , HIGH);
   delay(t);
   digitalWrite(i+2 , HIGH);
   delay(t);
   digitalWrite(i , LOW);
   delay(t);
   digitalWrite(i+1 , LOW);
   }

   for(int i=13 ; i > 3; i--){
   digitalWrite(i , HIGH);
   delay(t);
   digitalWrite(i-1 , HIGH);
   delay(t);
   digitalWrite(i-2 , HIGH);
   delay(t);
   digitalWrite(i , LOW);
   delay(t);
   digitalWrite(i-1 , LOW);
   }
}