Category Archives: gps

Epic Clock Clocks The Unix Epoch

Admit it: when you first heard of the concept of the Unix Epoch, you sat down with a calculator to see when exactly 2³¹-1 seconds would be from midnight UTC on January 1, 1970. Personally, I did that math right around the time my company hired contractors to put “Y2K Suspect” stickers on every piece of equipment that looked like it might have a computer in it, so the fact that the big day would come sometime in 2038 was both comforting and terrifying.

[Forklift] is similarly entranced by the idea of the Unix Epoch and built a clock to …read more

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Posted in clock, clock hacks, epoch, gps, ISO-8601, nmea, rtc, unix epoch | Leave a comment

How Etak Paved the Way to Personal Navigation

Our recent “Retrotechtacular” feature on an early 1970s dead-reckoning car navigation system stirred a memory of another pre-GPS solution for the question that had vexed the motoring public on road trips into unfamiliar areas for decades: “Where the heck are we?” In an age when the tattered remains of long-outdated paper roadmaps were often the best navigational aid a driver had, the dream of an in-dash scrolling map seemed like something Q would build for James Bond to destroy.

And yet, in the mid-1980s, just such a device was designed and made available to the public. Dubbed Etak, the system …read more

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Posted in compass, dead reckoning, Engineering, Etak, Featured, fluxgate, geocoding, gps, Hackaday Columns, navigation, NAVSTAR, Original Art, retrocomputing, topology | Leave a comment