int merah = 12;
int kuning = 14;
int hijau = 13;
int button_merah = 2;
int button_kuning = 0;
int button_hijau = 4;
void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  pinMode(merah, OUTPUT);
  pinMode(button_merah, INPUT);
  pinMode(kuning, OUTPUT);
  pinMode(button_kuning, INPUT);
  pinMode(hijau, OUTPUT);
  pinMode(button_hijau, INPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
  delay(10); // this speeds up the simulation
  if(digitalRead(button_merah) == LOW)
  digitalWrite(merah, HIGH);
  else 
  digitalWrite(merah, LOW);
  delay(10);
  if(digitalRead(button_kuning) == LOW)
  digitalWrite(kuning, HIGH);
  else
  digitalWrite(kuning, LOW);
  delay(10);
  if(digitalRead(button_hijau) == LOW)
  digitalWrite(hijau, HIGH);
  else
  digitalWrite(hijau, LOW);
  delay(10);
}