Even spendy commercial products can end up being lemons. This is something [Mike Buss] is familiar with, as he had the misfortune of being stuck using what he declares is …read more (https://hackaday.com/2022/03/19/worlds-worst-i-o-dock-doesnt-deserve-elegant-fix/)

Sensor Playground Keeps Track of Indoor Air Quality Through The Cloud
https://hackaday.com/2022/03/19/sensor-playground-keeps-track-of-indoor-air-quality-through-the-cloud/

When [tdw] wasn’t feeling well one day, his wife suggested that it might be due to poor air quality in their home. While an ordinary person could have simply opened …read more (https://hackaday.com/2022/03/19/sensor-playground-keeps-track-of-indoor-air-quality-through-the-cloud/)

Impedance Mismatch
https://hackaday.com/2022/03/19/impedance-mismatch/

There are a few classic physics problems that it can really help to have a mental map of. One is, of course, wave propagation. From big-wave surfing, through loudspeaker positioning, …read more (https://hackaday.com/2022/03/19/impedance-mismatch/)

These Mind-Controlled Cat Ears Move With Your Mood
https://hackaday.com/2022/03/19/these-mind-controlled-cat-ears-move-with-your-mood/

As any cat owner will tell you, a cat’s ears are great indicators of its state of mind: pointed forward if they want your attention, turned backwards if they’re angry, …read more (https://hackaday.com/2022/03/19/these-mind-controlled-cat-ears-move-with-your-mood/)

Reliving Second-Hand Nostalgia with the PDP-11
https://hackaday.com/2022/03/19/reliving-second-hand-nostalgia-with-the-pdp-11/

Levy’s Hackers: Heroes of the Computer Revolution is something like required reading for the hacker subculture, and Hackaday by extension. The first section of that book is all about early …read more (https://hackaday.com/2022/03/19/reliving-second-hand-nostalgia-with-the-pdp-11/)

World’s Smallest Hair Straightener For Fixing Old LCD Ribbons
https://hackaday.com/2022/03/19/worlds-smallest-hair-straightener-for-fixing-old-lcd-ribbons/

[Stephen] writes to us about an LCD repair tool he has created. We’ve all seen old devices with monochrome LCDs connected by thin film, where connections between the PCB and …read more (https://hackaday.com/2022/03/19/worlds-smallest-hair-straightener-for-fixing-old-lcd-ribbons/)

Learn All About Writing a Published Technical Book, From Idea to Print
https://hackaday.com/2022/03/19/learn-all-about-writing-a-published-technical-book-from-idea-to-print/

Ever wondered what, exactly, goes into creating a technical book? If you’d like to know the steps that bring a book from idea to publication, [Sara Robinson] tells all about …read more (https://hackaday.com/2022/03/19/learn-all-about-writing-a-published-technical-book-from-idea-to-print/)