void setup() {
  // put your setup code here, to run once:
pinMode(13, OUTPUT);
pinMode(12, OUTPUT);
pinMode(11, OUTPUT);
pinMode(10, OUTPUT);
pinMode(9, OUTPUT);
pinMode(8, OUTPUT);
pinMode(7, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
digitalWrite(13, 1);
digitalWrite(12, 1);
digitalWrite(11, 1);
digitalWrite(10, 1);
digitalWrite(9, 1);
digitalWrite(8, 1);
digitalWrite(7, 1);
delay(150);
digitalWrite(13, 0);
digitalWrite(12, 0);
digitalWrite(11, 0);
digitalWrite(10, 0);
digitalWrite(9, 0);
digitalWrite(8, 0);
digitalWrite(7, 0);
delay(150);
}