Kodingan Arduino Uno Blink Lampu Berjalan

int LED1 = 8;   // pin nomor 8
int LED2 = 7;   // pin nomor 7
int LED3 = 6; // pin nomor 6
int LED4 = 13; // pin nomor 13
int LED5 = 5; // pin nomor 5
int LED6 = 4; // pin nomor 4

 void setup (){
  pinMode(LED1,OUTPUT);
  pinMode(LED2,OUTPUT);
  pinMode(LED3,OUTPUT);
  pinMode(LED4,OUTPUT);
  pinMode(LED5,OUTPUT);
  pinMode(LED6,OUTPUT);
 }

void loop (){
  digitalWrite(LED1,HIGH);
  delay(1000);

  digitalWrite(LED2,HIGH);
  delay(1000);
  digitalWrite(LED3,HIGH);
  delay(1000);
  digitalWrite(LED4,HIGH);
  delay(1000);
  digitalWrite(LED5,HIGH);
  delay(1000);
  digitalWrite(LED6,HIGH);
  delay(1000);
  digitalWrite(LED1,LOW);
  digitalWrite(LED2,LOW);
  digitalWrite(LED3,LOW);
  digitalWrite(LED4,LOW);
  digitalWrite(LED5,LOW);
  digitalWrite(LED6,LOW);
  delay(500);
  digitalWrite(LED6,HIGH);
  digitalWrite(LED5,HIGH);
  digitalWrite(LED4,HIGH);
  digitalWrite(LED3,HIGH);
  digitalWrite(LED2,HIGH);
  digitalWrite(LED1,HIGH);
  delay(1000);
  digitalWrite(LED6,LOW);
  delay(500);
  digitalWrite(LED5,LOW);
  delay(500);
  digitalWrite(LED4,LOW);
  delay(500);
  digitalWrite(LED3,LOW);
  delay(500);
  digitalWrite(LED2,LOW);
  delay(500);
  digitalWrite(LED1,LOW);
  delay(500);
}