My DEF CON badge, complete with add-on from the DC801 crew, built by @kL34N and @SirGed. My puzzle quest is far from complete—it may require reprogramming and flipping a component.

DEF CON 25’s theme was retro-tech, and [xres0nance] wasn’t kidding around in the retro badge he built for the convention. The badge was mostly built out of actual parts from the ’80s and ...

You can cast your votes below for the Best '80s album in four third round head-to-head match-ups - one in each region. You can vote once per hour now through March 30 at 11:59PM ET.