3D Printed Einstein-Szilard Refrigerator Cools with Fire
https://hackaday.com/2026/10/31/3d-printed-einstein-szilard-refrigerator-cools-with-fire/

They may not deliver the highest efficiency, but absorption refrigerators have earned a persistent place in camper vans and industrial plants thanks to a few distinct advantages: they can operate …read more (https://hackaday.com/2026/10/31/3d-printed-einstein-szilard-refrigerator-cools-with-fire/)

Learn to Edit STL Files in Just a Few Minutes
https://hackaday.com/2026/10/31/learn-to-edit-stl-files-in-just-a-few-minutes/

Sometimes an STL file needs a bit of editing, but if one doesn’t already know how to use a mesh editor it’s unlikely that one has the time to sit …read more (https://hackaday.com/2026/10/31/learn-to-edit-stl-files-in-just-a-few-minutes/)

Bring On Supercon!
https://hackaday.com/2026/10/31/bring-on-supercon/

Standing room only during a 2017 Hackaday Supercon talk
" data-large-file="https://hackaday.com/wp-content/uploads/2017/11/supercon-recap-article-featured.jpg?w=800">In just under a week from today, almost 700 hackers will be getting together in Pasadena, CA for three days of scheming, soldering, and socializing. If you’re able to join …read more (https://hackaday.com/2026/10/31/bring-on-supercon/)

DIY WiFi Analyzer Sniffs Out Congestion and Coverage Issues, Suggests Fixes
https://hackaday.com/2026/10/31/diy-wifi-analyzer-sniffs-out-congestion-and-coverage-issues-suggests-fixes/

[Roni Bandini]’s JEV WiFi Analyzer is an interesting experiment that glues together a single-board Linux computer, a USB WiFi adapter, and a specialized AI model to create a new kind …read more (https://hackaday.com/2026/10/31/diy-wifi-analyzer-sniffs-out-congestion-and-coverage-issues-suggests-fixes/)

Voyager 1 Briefly Goes Silent, Scaring Everyone
https://hackaday.com/2026/10/31/voyager-1-briefly-goes-silent-scaring-everyone/

It’s no big secret at this point that we are looking at the final years of the two venerable Voyager spacecraft. With their power supplies diminishing and their 1970s-era electronics …read more (https://hackaday.com/2026/10/31/voyager-1-briefly-goes-silent-scaring-everyone/)

Rooting an Amazon Echo Dot
https://hackaday.com/2026/10/31/rooting-an-amazon-echo-dot/

The Amazon Echo Dot is one of Amazon’s so-called ‘smart speaker’ offerings that tie into their larger Alexa-fueled ecosystem, designed to be a pretty minimalistic device that gives you access …read more (https://hackaday.com/2026/10/31/rooting-an-amazon-echo-dot/)