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Build a Better DIY Seismometer

Cars That Think

Data is stored on a logging board with a real-time clock [bottom]. second intervals and store the time-stamped data on a microSD card. earthquake struck just off the coast of Cuba. Establishing the response of the seismometer to vibrations is the role of the end weight [top left] and dampening magnets [top right].

DIY 137
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Come Home With Memories, Not a Shocking Phone Bill

Baua Electric

There are two major options: You can get a data plan directly through your phone company or you can swap out your phone’s SIM card, a small chip that stores data about you and your carrier — on newer phones, you can use an app that does the same thing. Some exceptions: Cuba and the Maldives. Exceptions: Cuba and the Maldives.

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Ham Radio Jamming, Wireless Industry Battlegrounds, and IoT in Space

Cars That Think

Here are the highlights of what went down in telecom this year: Cuba Jamming Ham Radio? After coordination with operators in South America and Europe, the source of the interfering signals—which sound like “the unfortunate offspring of a frog and a Dalek ”—was quickly identified as Cuba.

Industry 141