#define LED_red 7
#define LED_yellow 13
#define LED_green 8


void setup()
{
  Serial.begin(9600);
  digitalWrite(LED_red, HIGH);
  digitalWrite(LED_yellow, LOW);
  digitalWrite(LED_green, LOW);
  delay(2000);
}

void loop() 
{
  Serial.println("Red");
  digitalWrite(LED_red, LOW);
  delay(500);
  digitalWrite(LED_yellow,HIGH);
  delay(2000);
  digitalWrite(LED_yellow,LOW);


  Serial.println("GO! GO! GO!");
  digitalWrite(LED_green, HIGH);
  delay(2000);
  digitalWrite(LED_green,LOW);

}