const int ledPin1 = 2;
const int ledPin2 = 12;

void setup() {
  pinMode(ledPin1, OUTPUT);
  pinMode(ledPin2, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  digitalWrite(ledPin1, HIGH);
  Serial.println("LED 1 turned on");
  delay(3000);

  digitalWrite(ledPin1, LOW);
  Serial.println("LED 1 turned off");
  delay(500);

  digitalWrite(ledPin2, HIGH);
  Serial.println("LED 2 turned on");
  delay(3000);

  digitalWrite(ledPin2, LOW);
  Serial.println("LED 2 turned off");
  delay(500);
}