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Explaining Hall-effect, TMR, and other new types of “mechanical” switches

Ars Technica’s guide to new keyboard sensing technologies.  The mechanical keyboard isn’t always so mechanical anymore. Over the past six years, keyboards with optical, Hall-effect, and other “contactless” switches have become increasingly common, often going for higher prices than traditional mechanical keyboards, which already command a premium over basic…

The dawn of the age of the exoskeleton

The devices continue to show noticeable benefits for users in various real-world tasks.  This year, members of Seattle Mountain Rescue have been setting off into the wilds of the US Pacific Northwest wearing an unusual piece of kit. They’ve been hiking into the wilderness with powered assistive devices attached…

Someone got Doom in an SQL database

1,300 lines of SQL querying renders accurate bitmapped views of Hell at 35 fps.  “Rendering Doom in a database is obviously a bad idea,” Lukas Vogel writes in a lengthy blog post explaining how exactly he managed to render Doom using an SQL database. OK, that’s not entirely accurate.…