reindeer_blink_eyes_2.ino

const int ledPin1 =  13;
const int ledPin2 =  6;
const int tonePin = 8;
const int gnd1 =  7;
const long interval = 100;
int ledState = LOW;

void setup() {
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  
  pinMode(gnd1, OUTPUT);
  digitalWrite(gnd1, LOW);
  
}

void loop()
{
    setEyesStatus(LOW);
    delay(interval);
    setEyesStatus(HIGH);
    delay(5000);
}

void setEyesStatus(int state) {
  digitalWrite(ledPin1, state);
  digitalWrite(ledPin2, state);
}