int LedR=3,LedG=5,LedB=6;  //Red LED 3, Green LED 5, Blue LED 6

void setup() {
  // put your setup code here, to run once:
  pinMode(LedR,OUTPUT);
  pinMode(LedG,OUTPUT);
  pinMode(LedB,OUTPUT);
  Serial.begin(115200);
  Serial.print("Hello Arduino\n");
}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(LedR,HIGH);  
  digitalWrite(LedG,HIGH);
  digitalWrite(LedB,HIGH);
  
  digitalWrite(LedR,LOW);
  Serial.print("Red LED ON\n");
  delay(1000);
  digitalWrite(LedR,HIGH);
  
  digitalWrite(LedG,LOW);
  Serial.print("Green LED ON\n");
  delay(1000);
  digitalWrite(LedG,HIGH);
  
  digitalWrite(LedB,LOW);
  Serial.print("Blue LED ON\n");
  delay(1000);
  digitalWrite(LedB,HIGH);
}