CES brought a crowd of security companies, all vying to impress with new cameras, sensors and locks. But here's what really ...
The U400 ($269.99) is the first to support Apple’s Home Key’s hands-free unlocking. This uses the U1 ultra-wideband (UWB) ...
IEEE Spectrum on MSN
See the sky like never before with a DIY eyepiece
So I decided to build a low-cost DIY amplifying eyepiece, to make it easier for visitors to observe deep-sky objects but ...
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