     if (Serial.available() > 0)
     {
       inputHOLD = Serial.readString();
-      if (inputHOLD == "Quit")
+      if (inputHOLD == "quit")
         break;
       else
       {

#define thErrON 0.9 //threshold multipler HIGH leds
#define thErrOFF 1.5 //threshold multipler LOW leds
#define setupWaitTime 1 //(ms) delay at setup time 
#define fbTime 30 //(ms) feedback led on time
#define cycTime 30 //(ms) feedback led off time
#define sync "MODE_sync" // keyword for start sync seq (transmitter side)
#define recal "MODE_recal" // keyword for start sync seq (receiver side)
#define partyM "MODE_party" // keyword for party mode (easter egg)

      synchronization(); //if true sync
      goto setupMain; //then go back
    }
    else if (inputHOLD == crdM)
    {
      Serial.println("In alphabetic order:\nOnur Calik\nMusab Cevik\nBaran Dereli\nOzgun Sensoy\nYigit Suoglu");
      goto setupMain; //then go back
    }
    else if (inputHOLD == ledContol)
    {
      Serial.print("Enter led code: ");
      while (true)
      {
        if (Serial.available() > 0)
        {
          inputHOLD = Serial.readString();
          if (inputHOLD == "quit")
          {
            digitalWrite(redLED, LOW);
            digitalWrite(greenLED, LOW);
            digitalWrite(blueLED, LOW);
            break;
          }
          short j = (int) inputHOLD[0] - 48;
          ledControl(j);
        }
      }
      goto setupMain; //then go back
    }
    else if (inputHOLD == partyM)
    {
      randomLed();

    }
  }
  tcs.getRawData(&r, &g, &b, &c); //get env info
  //R00
