#include <Arduino.h>
char data;
#define LedMerah 17
#define LedBiru 18
#define LedKuning 16
#define LedUngu 5

void setup() {
  Serial.begin(115200);
  Serial.println("Membaca Karakter");
  Serial.print("Masukkan Karakter");
  pinMode(LedMerah, OUTPUT);
  pinMode(LedKuning, OUTPUT);
  pinMode(LedUngu, OUTPUT);
  pinMode(LedBiru, OUTPUT);
}

void loop() {
  if(Serial.available()) {
    char data = Serial.read();
    Serial.println();
    Serial.print("Karakter yang dikirim : ");
    Serial.println(data);
    if (data == '1' ) {
      digitalWrite(LedMerah, HIGH);
      delay(2000);
      digitalWrite(LedMerah, LOW);
    }
    if (data == '2' ) {
      digitalWrite(LedUngu, HIGH);
      delay(2000);
      digitalWrite(LedUngu, LOW);
    }
    if (data == '3' ) {
      digitalWrite(LedBiru, HIGH);
      delay(2000);
      digitalWrite(LedBiru, LOW);
    }
    if (data == '4') {
      digitalWrite(LedKuning, HIGH);
      delay(2000);
      digitalWrite(LedKuning, LOW);
    }
  
  } 

}