void setup() {
  // put your setup code here, to run once:
  Serial.begin(9600);
  //ทําครั้งเดียวเอาไว้สําหรับตั้งค่าโปรแกรม
  pinMode(5, OUTPUT);//LEDสีเขียว
  pinMode(2, OUTPUT);//LEDสีนํ้าเงิน
  pinMode(3, OUTPUT);//LEDสีเเดง
  pinMode(4, OUTPUT);//LEDสีเหลือง
  Serial.println("Hello Enter:'g'or'b'or'r'or'y'or'A'Only");
}

void loop() {
  //ทําซํ้าไม่มีสิ้นสุด
  if(Serial.available()>0)
  {
    int val = Serial.read();
    if(val==103)
    {
      digitalWrite(5, HIGH);delay(2000);
      digitalWrite(5, LOW);delay(2000);
    }
    else if(val==98)
    {
      digitalWrite(2, HIGH);delay(2000);
      digitalWrite(2, LOW);delay(2000);
    }
    else if(val==114)
    {
      digitalWrite(3, HIGH);delay(2000);
      digitalWrite(3, LOW);delay(2000);
    }
    else if(val==121)
    {
      digitalWrite(4, HIGH);delay(2000);
      digitalWrite(4, LOW);delay(2000);
    }
    else if(val==103)
    {
      digitalWrite(5, HIGH);delay(2000);
      digitalWrite(5, LOW);delay(2000);
    }
     else if(val==65)
    {
      digitalWrite(5, HIGH);
      digitalWrite(4, HIGH);
      digitalWrite(3, HIGH);
      digitalWrite(2, HIGH);
      delay(2000);

      digitalWrite(5, LOW);
      digitalWrite(4, LOW);
      digitalWrite(3, LOW);
      digitalWrite(2, LOW);
      delay(2000);

      digitalWrite(5, HIGH);
      digitalWrite(4, HIGH);
      digitalWrite(3, HIGH);
      digitalWrite(2, HIGH);
      delay(2000);

      digitalWrite(5, LOW);
      digitalWrite(4, LOW);
      digitalWrite(3, LOW);
      digitalWrite(2, LOW);
      delay(2000);

      digitalWrite(5, HIGH);
      digitalWrite(4, HIGH);
      digitalWrite(3, HIGH);
      digitalWrite(2, HIGH);
      delay(2000);

      digitalWrite(5, LOW);
      digitalWrite(4, LOW);
      digitalWrite(3, LOW);
      digitalWrite(2, LOW);
      delay(2000);

      digitalWrite(5, HIGH);
      digitalWrite(4, HIGH);
      digitalWrite(3, HIGH);
      digitalWrite(2, HIGH);
      delay(2000);

      digitalWrite(5, LOW);
      digitalWrite(4, LOW);
      digitalWrite(3, LOW);
      digitalWrite(2, LOW);
      delay(2000);
    }
    else
    {
      Serial.println("hello");
    }
  }
  else{
    Serial.println("hello");
  }
}