Sometimes you need to display a number nice and large, making it easily readable at a good distance. [Lewis] has just the thing for that: a big expandable 7-segment display. The build is modular ...

and in a big, visible package, to boot. For those circumstances, consider whipping up a set of these 3D-printed seven-segment displays. The build consists of a 3D printed frame, with each segment ...

seven-segment display (Image courtesy of LXD, Inc.) In their natural state, liquid crystals line up with the orientation "rubbed" into the front and rear glass panels. The rubbings are microscopic ...