long rando;
int red = 2;
int blue = 3;
int orange = 4;
int incomingByte = 0;

void setup() {
  Serial.begin(9600);
}

void loop() {

  rando = random(2, 5);
  if (Serial.available() > 0) {
    incomingByte = Serial.read();
    Serial.print("i received");
    Serial.println(incomingByte);
  }
}