If you’ve been to a model train show in the past several years, you may have noticed that the layouts on display have more than just trains running around track with some static scenery in the background. Modern scale train layouts are becoming increasingly more dynamic, with sound, advanced lighting, and animation beyond just the trains. These elements add a whole new world to the typical model train layout, from stock cars emanating the sounds of livestock, to signals flashing to let engineers know if it’s safe to proceed with their train, to animated scenes on the layout such as kids playing on playground equipment. These bring a train layout to life, and make the experience more fun for all. Many builders in the LEGO community have incorporated these elements into their own creations, but there’s never been an off the shelf, “Plug and Play” solution to creating and controlling many of them until today. From the minds of LEGO hobbyists Michael Gale and Jason Allemann has come the PFx Brick.