Lockin’s New Smart Locks Never Need Recharging Thanks to Infrared Light

Lockin has announced the Veno Pro Wireless and V7 Max, two new smart locks that the company says will have “zero need to ...
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 ...