#define Blink_LED_1 7
#define Blink_LED_2 8

void setup()
{
  Serial.begin(9600);
  pinMode(Blink_LED_1, OUTPUT);
  pinMode(Blink_LED_2, OUTPUT);


}

void loop()
{
  digitalWrite(Blink_LED_1, HIGH);
  digitalWrite(Blink_LED_2, LOW);
 
  Serial.println("LED_1 ON");
  delay(3000);
  digitalWrite(Blink_LED_1, LOW);
  digitalWrite(Blink_LED_2, HIGH);
  
  Serial.println("LED_2 ON");
  delay(2000);
  digitalWrite(Blink_LED_1, LOW);
  digitalWrite(Blink_LED_2, LOW);


  delay(1000);
}