void OnCollisionEnter(Collision col)                //TODO add functions here!!!
    {
        if (col.gameObject.tag == "sphere")
        {
            Debug.Log("Touching!");
        }
        if (col.gameObject.tag == "b1")
        {
            s.changeMusic(0);
        }
        if (col.gameObject.tag == "b2")
        {
            s.changeMusic(1);
        }
        if (col.gameObject.tag == "b3")
        {
            s.changeMusic(2);
        }
        if (gameObject.tag.Equals("index"))
        {
            sp.Write(0 + "" + "y");

            //GenericSerialLoop (true, 1);
        }
        else if (gameObject.tag.Equals("thumb"))
        {
            sp.Write(180 + "" + "x");

            //GenericSerialLoop (true, 0);
        }
    }