code: function DOTHAT() {
      if (!(this instanceof DOTHAT)) {
          return new DOTHAT();
      }
      
      this.displayOTron = new DisplayOTron('HAT');
      this.lcd = new LCD(this.displayOTron);
      this.backlight = new Backlight(this.displayOTron);
      this.barGraph = new BarGraph(this.displayOTron);
      this.touch = new Touch(this.displayOTron);
  }
docs: Creates a new `DOTHAT` object.
  @constructor