int leds_1 = 6;
int leds_2 = 7;
int leds_3 = 8;
int leds_4 = 9;
int leds_5 = 10;
int leds_6 = 11;

int delayTime = 150;



void setup() {
  // put your setup code here, to run once:
  pinMode(leds_1,OUTPUT);
  pinMode(leds_2,OUTPUT);
  pinMode(leds_3,OUTPUT);
  pinMode(leds_4,OUTPUT);
  pinMode(leds_5,OUTPUT);
  pinMode(leds_6,OUTPUT);


}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(leds_1,HIGH);
  delay(delayTime);
  digitalWrite(leds_1,LOW);
  //delay(delayTime);
  digitalWrite(leds_2,HIGH);
  delay(delayTime);
  digitalWrite(leds_2,LOW);
  //delay(delayTime);
digitalWrite(leds_3,HIGH);
  delay(delayTime);
  digitalWrite(leds_3,LOW);
  //delay(delayTime);
digitalWrite(leds_4,HIGH);
  delay(delayTime);
  digitalWrite(leds_4,LOW);
  //delay(delayTime);
digitalWrite(leds_5,HIGH);
  delay(delayTime);
  digitalWrite(leds_5,LOW);
  //delay(delayTime);
digitalWrite(leds_6,HIGH);
  delay(delayTime);
  digitalWrite(leds_6,LOW);
  //delay(delayTime);

}