#define Red1 2
#define Red2 17
#define Red3 25
#define Yellow1 4
#define Yellow2 5
#define Yellow3 26
#define Green1 16
#define Green2 18
#define Green3 27

void setup() {
  Serial.begin(115200);
  Serial.println("UjiCoba Traffic Light");
  Serial.println("==========");
  pinMode(Red1, OUTPUT);
  pinMode(Red2, OUTPUT);
  pinMode(Red3, OUTPUT);
  pinMode(Yellow1, OUTPUT);
  pinMode(Yellow2, OUTPUT);
  pinMode(Yellow3, OUTPUT);
  pinMode(Green1, OUTPUT);
  pinMode(Green2, OUTPUT);
  pinMode(Green3, OUTPUT);
}

void loop() {
//WEST
  digitalWrite(Green1, HIGH); //green
  digitalWrite(Yellow1, LOW); //yellow
  digitalWrite(Red1, LOW); //red
  
  digitalWrite(Green2, LOW); //green
  digitalWrite(Yellow2, LOW); //yellow
  digitalWrite(Red2, HIGH); //red

  digitalWrite(Green3, LOW); //green
  digitalWrite(Yellow3, LOW); //yellow
  digitalWrite(Red3, HIGH); //red
  delay(4000);
  //
  digitalWrite(Green1, LOW);
  digitalWrite(Yellow1, HIGH);
  digitalWrite(Red1, LOW);

  digitalWrite(Green2, LOW);
  digitalWrite(Yellow2, HIGH);
  digitalWrite(Red2, LOW);
  delay(2000);

  //
  digitalWrite(Green1, LOW);
  digitalWrite(Yellow1, LOW);
  digitalWrite(Red1, HIGH);

  digitalWrite(Green2, HIGH);
  digitalWrite(Yellow2, LOW);
  digitalWrite(Red2, LOW);

  digitalWrite(Green3,LOW);
  digitalWrite(Yellow3, LOW);
  digitalWrite(Red3, HIGH);
  delay(4000);
  //
  digitalWrite(Green2, LOW);
  digitalWrite(Yellow2, HIGH);
  digitalWrite(Red2, LOW);

  digitalWrite(Green3, LOW);
  digitalWrite(Yellow3, HIGH);
  digitalWrite(Red3, LOW);
  delay(2000);
  //
  digitalWrite(Green1, LOW);
  digitalWrite(Yellow1, LOW);
  digitalWrite(Red1, HIGH);

  digitalWrite(Green2, LOW);
  digitalWrite(Yellow2, LOW);
  digitalWrite(Red2, HIGH);

  digitalWrite(Green3,HIGH);
  digitalWrite(Yellow3, LOW);
  digitalWrite(Red3, LOW);
  delay(4000);
  //
  digitalWrite(Green1, LOW);
  digitalWrite(Yellow1, HIGH);
  digitalWrite(Red1, LOW);

  digitalWrite(Green3, LOW);
  digitalWrite(Yellow3, HIGH);
  digitalWrite(Red3, LOW);
  delay(2000);
  //
  digitalWrite(Green1, HIGH);
  digitalWrite(Yellow1, LOW);
  digitalWrite(Red1, LOW);

  digitalWrite(Green2, LOW);
  digitalWrite(Yellow2, LOW);
  digitalWrite(Red2, HIGH);

  digitalWrite(Green3,LOW);
  digitalWrite(Yellow3, LOW);
  digitalWrite(Red3, HIGH);
  delay(4000);



}