int ledm = 8;
int ledk = 9;
int ledh = 10;


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");
delay(5000);
digitalWrite(ledm, LOW);
digitalWrite(ledk, HIGH);
digitalWrite(ledh, LOW);
Serial.println("KUNING MENYALA");
delay(2000);
Serial.println("HIJAU MENYALA");
digitalWrite(ledm, LOW);
digitalWrite(ledk, LOW);
digitalWrite(ledh, HIGH);
delay(4000);
}