Long ago at Ebbets Field, the “H” in Schaefer beer’s beloved electronic sign lit up for every hit, and the “E” illuminated for errors. Now, a new kind of electronic sign is moving into Major League ...

[u407]’s 3D printed Signspinner was created as a clean/dirty indicator for a dishwasher, and at its heart is a mechanism that works a lot like that of a retractable ballpoint pen. Every click of the ...