LED matrix displays and flat-screen monitors have largely supplanted old-school electromechanical models for public signage. We think that’s a shame, but it’s also a boon for the tinkerer, as old ...

Forget LEDs. This sign uses a toy train to flip pixels, Vanna White style, one dot at a time. Watch: TNT’s Amazing Window Display, Made From Plastic Pixels Breakfast, a design firm, souped up an old ...