int ledm = 13;
int ledk = 12;
int ledh = 11;

void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  pinMode(ledm, OUTPUT);
  pinMode(ledk, OUTPUT);
  pinMode(ledh, OUTPUT);

}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(ledm, HIGH);
  digitalWrite(ledk, LOW);
  digitalWrite(ledh, LOW);
  Serial.println("merah menyala");
  Serial.println("kuning mati");
  Serial.println("hijau mati");
  delay(5000);
  Serial.println("");
  digitalWrite(ledm, LOW);
  digitalWrite(ledk, HIGH);
  digitalWrite(ledh, LOW);
  Serial.println("merah mati");
  Serial.println("kuning menyala");
  Serial.println("hijau mati");
  delay(5000);
  Serial.println("");
  digitalWrite(ledm, LOW);
  digitalWrite(ledk, LOW);
  digitalWrite(ledh, HIGH);
  Serial.println("merah mati");
  Serial.println("kuning mati ");
  Serial.println("hijau menyala");
  delay(5000);
  Serial.println("");

}