//KABEL KUNING
  const int a_merah=26;
  const int a_kuning=25;
  const int a_hijau=33;
  //KABEL MERAH
  const int b_merah=21;
  const int b_kuning=19;
  const int b_hijau=18;
  //KABEL COKLAT
  const int c_merah=15;
  const int c_kuning=2;
  const int c_hijau=4;
  //KABEL BIRU
  const int d_merah=14;
  const int d_kuning=12;
  const int d_hijau=13;

void setup() {
pinMode(a_merah, OUTPUT);
pinMode(a_kuning, OUTPUT);
pinMode(a_hijau, OUTPUT);

pinMode(b_merah, OUTPUT);
pinMode(b_kuning, OUTPUT);
pinMode(b_hijau, OUTPUT);

pinMode(c_merah, OUTPUT);
pinMode(c_kuning, OUTPUT);
pinMode(c_hijau, OUTPUT);

pinMode(d_merah, OUTPUT);
pinMode(d_kuning, OUTPUT);
pinMode(d_hijau, OUTPUT);

}

void loop() {
  a_jalan();
  delay(4000);
  a_transisi();
  delay(1500);

  b_jalan();
  delay(4000);
  b_transisi();
  delay(1500);

  c_jalan();
  delay(4000);
  c_transisi();
  delay(1500);

  d_jalan();
  delay(4000);
  d_transisi();
  delay(1500);

}

void a_jalan(){
  digitalWrite(a_merah, LOW);
  digitalWrite(a_kuning, LOW);
  digitalWrite(a_hijau, HIGH);
  digitalWrite(b_merah, HIGH);
  digitalWrite(c_merah, HIGH);
  digitalWrite(d_merah, HIGH);
  digitalWrite(d_kuning, LOW);
}
void a_transisi(){
  digitalWrite(a_merah, LOW);
  digitalWrite(a_kuning, HIGH);
  digitalWrite(a_hijau, LOW);

  digitalWrite(b_merah, LOW);
  digitalWrite(b_kuning, HIGH);
  digitalWrite(b_hijau, LOW);

  digitalWrite(c_merah, HIGH);
  digitalWrite(c_kuning, LOW);
  digitalWrite(c_hijau, LOW);

  digitalWrite(d_merah, HIGH);
  digitalWrite(d_kuning, LOW);
  digitalWrite(d_hijau, LOW);
}
void b_jalan(){
  digitalWrite(a_merah, HIGH);
  digitalWrite(a_kuning, LOW);
  digitalWrite(a_hijau, LOW);

  digitalWrite(b_merah, LOW);
  digitalWrite(b_kuning, LOW);
  digitalWrite(b_hijau, HIGH);

  digitalWrite(c_merah, HIGH);
  digitalWrite(c_kuning, LOW);
  digitalWrite(c_hijau, LOW);
  
  digitalWrite(d_merah, HIGH);
  digitalWrite(d_kuning, LOW);
  digitalWrite(d_hijau, LOW);

}
void b_transisi(){
digitalWrite(a_merah, HIGH);
  digitalWrite(a_kuning, LOW);
  digitalWrite(a_hijau, LOW);

  digitalWrite(b_merah, LOW);
  digitalWrite(b_kuning, HIGH);
  digitalWrite(b_hijau, LOW);

  digitalWrite(c_merah, LOW);
  digitalWrite(c_kuning, HIGH);
  digitalWrite(c_hijau, LOW);

  digitalWrite(d_merah, HIGH);
  digitalWrite(d_kuning, LOW);
  digitalWrite(d_hijau, LOW);
}
void c_jalan(){
  digitalWrite(a_merah, HIGH);
  digitalWrite(a_kuning, LOW);
  digitalWrite(a_hijau, LOW);

  digitalWrite(b_merah, HIGH);
  digitalWrite(b_kuning, LOW);
  digitalWrite(b_hijau, LOW);

  digitalWrite(c_merah, LOW);
  digitalWrite(c_kuning, LOW);
  digitalWrite(c_hijau, HIGH);

  digitalWrite(d_merah, HIGH);
  digitalWrite(d_kuning, LOW);
  digitalWrite(d_hijau, LOW);

}
void c_transisi(){
digitalWrite(a_merah, HIGH);
  digitalWrite(a_kuning, LOW);
  digitalWrite(a_hijau, LOW);

  digitalWrite(b_merah, HIGH);
  digitalWrite(b_kuning, LOW);
  digitalWrite(b_hijau, LOW);

  digitalWrite(c_merah, LOW);
  digitalWrite(c_kuning, HIGH);
  digitalWrite(c_hijau, LOW);

  digitalWrite(d_merah, LOW);
  digitalWrite(d_kuning, HIGH);
  digitalWrite(d_hijau, LOW);

}
void d_jalan(){
digitalWrite(a_merah, HIGH);
  digitalWrite(a_kuning, LOW);
  digitalWrite(a_hijau, LOW);

  digitalWrite(b_merah, HIGH);
  digitalWrite(b_kuning, LOW);
  digitalWrite(b_hijau, LOW);

  digitalWrite(c_merah, HIGH);
  digitalWrite(c_kuning, LOW);
  digitalWrite(c_hijau, LOW);

  digitalWrite(d_merah, LOW);
  digitalWrite(d_kuning, LOW);
  digitalWrite(d_hijau, HIGH);
}
void d_transisi(){
digitalWrite(a_merah, LOW);
  digitalWrite(a_kuning, HIGH);
  digitalWrite(a_hijau, LOW);

  digitalWrite(b_merah, HIGH);
  digitalWrite(b_kuning, LOW);
  digitalWrite(b_hijau, LOW);

  digitalWrite(c_merah, HIGH);
  digitalWrite(c_kuning, LOW);
  digitalWrite(c_hijau, LOW);

  digitalWrite(d_merah, LOW);
  digitalWrite(d_kuning, HIGH);
  digitalWrite(d_hijau, LOW);
}