int redled = 4;
int blueled = 5;

void setup() {
  pinMode(redled, OUTPUT);
  pinMode(blueled, OUTPUT);

  Serial.begin(9600);
  Serial.println("Enter 1 or 2");
}

void loop() {
  if (Serial.available() > 0) {
    char c = Serial.read();
    Serial.println(c);
    if (c == '\n' || c == '\r') return;

    if (c == '1') {
      digitalWrite(redled, HIGH);
      digitalWrite(blueled, LOW);
    }

    if (c == '2') {
      Serial.write(c);
      digitalWrite(blueled, HIGH);
      //digitalWrite(redled, LOW);
    }
  

  delay(3000);
  digitalWrite(redled, LOW);
  }
}