void loop()
{
  byte data[301];
  Serial.write('a');

  //Add a delay to give sender time to respond to 'a'
  //3 ms is shortest time without glitches**
  delay(3);

  //Now the LED can be read in proper order (R,G,B) unlike before**

  if (Serial.available() > 0){
    Serial.readBytes(data, 301);
    c_interval = data[0];
    for (int i=0; i<100; i++){
      leds[i].r = data[i+1];
      leds[i].g = data[i+101];
      leds[i].b = data[i+201];
      error_mode = 0;
    }
  }
  else{
    error_mode = 1;
  }
  if (error_mode == 0){
    for (int i=0; i<100; i++){
      leds[100+i].r = leds[i].r;
      leds[100+i].g = leds[i].g;
      leds[100+i].b = leds[i].b;
      leds[200+i].r = leds[i].r;
      leds[200+i].g = leds[i].g;
      leds[200+i].b = leds[i].b;
    }
    FastLED.show();

	//Now the c_interval feature works, I approximate delay of above to 24 ms so I subtract 24 from c_interval**
    FastLED.delay(c_interval-24);

	//Empty the serial buffer in case anything left, to avoid reading old data
    while (Serial.available()>0){
      Serial.read();
    }
  }
  else if (error_mode == 1){
    default_pattern();
  }
}