It’s no exaggeration to say that the development of cheap rechargeable lithium-ion batteries has changed the world. Enabling everything from smartphones to electric cars, their ability to pack an incredible …read more (https://hackaday.com/2024/12/03/oshw-battery-tester-aims-to-help-tame-lithium-cells/)

Scratch And Sniff Stickers And The Gas Panic of ’87
https://hackaday.com/2024/12/03/scratch-and-sniff-stickers-and-the-gas-panic-of-87/

Ever wonder how those scratch and sniff stickers manage to pack a punch of aroma into what looks like ordinary paper? The technology behind it is deceptively clever, and has …read more (https://hackaday.com/2024/12/03/scratch-and-sniff-stickers-and-the-gas-panic-of-87/)

Holograms: the Art of Recording Wavefronts
https://hackaday.com/2024/12/03/holograms-the-art-of-recording-wavefronts/

The difference between holography and photography can be summarized perhaps most succinctly as the difference between recording the effect photons have on a surface, versus recording the wavefront which is …read more (https://hackaday.com/2024/12/03/holograms-the-art-of-recording-wavefronts/)

Chess What: One More Pi-Powered Board
https://hackaday.com/2024/12/03/chess-what-one-more-pi-powered-board/

Chess is timeless, but automating it? That’s where the real magic begins. Enter [Tamerlan Goglichidze]’s Pi Board, an automated chess system that blends modern tech with age-old strategy. Inspired by …read more (https://hackaday.com/2024/12/03/chess-what-one-more-pi-powered-board/)

Car Radio Chip Goes Into DIY Build
https://hackaday.com/2024/12/03/car-radio-chip-goes-into-diy-build/

[Sjef Verhoeven] still loves radio and enjoys the challenge of listening to radio signals from far away. He wanted to build his own radio and turned to the TEF6686 chip, …read more (https://hackaday.com/2024/12/03/car-radio-chip-goes-into-diy-build/)

3D Printing Threaded Replacements
https://hackaday.com/2024/12/03/3d-printing-threaded-replacements/

Printing an object with threads is nothing new. If you know the specifications on the other thread or you are in control of it, no problem. But [Shop Therapy] wanted …read more (https://hackaday.com/2024/12/03/3d-printing-threaded-replacements/)

A Month Without IPV4 is Like a Month Without…
https://hackaday.com/2024/12/03/a-month-without-ipv4-is-like-a-month-without/

Recently, there was a Mastodon post from [nixCraft] challenging people to drop their NAT routers for the month of November and use only IPv6. What would it be like to …read more (https://hackaday.com/2024/12/03/a-month-without-ipv4-is-like-a-month-without/)

Fail of the Week: The SMD Crystal Radio That Wasn’t
https://hackaday.com/2024/12/03/fail-of-the-week-the-smd-crystal-radio-that-wasnt/