You asked for it, and now you’ve got it. It’s taken more than a decade of accumulated complaining, but this gigantic 555 timer IC has finally gathered enough psychokinetic energy …read more (https://hackaday.com/2021/12/20/all-hail-your-new-giant-555-timer-overlord/)

Concrete with 3D Printed Foam Forms
https://hackaday.com/2021/12/20/concrete-with-3d-printed-foam-forms/

The latest 3D printing application?  Forming concrete. That’s according to a team at ETH Zurich who claims that construction with foam forms cuts concrete usage up to 70%. It also …read more (https://hackaday.com/2021/12/20/concrete-with-3d-printed-foam-forms/)

The Assassin’s Teapot Is A Mischevious Design
https://hackaday.com/2021/12/20/the-assassins-teapot-is-a-mischevious-design/

Many films use a similar trope when it comes to poisoning. The aspiring murderer ingests a drink poured from the same vessel as that given to their intended victim to …read more (https://hackaday.com/2021/12/20/the-assassins-teapot-is-a-mischevious-design/)

Hydrogen Generation Made Easy
https://hackaday.com/2021/12/20/hydrogen-generation-made-easy/

Even if you never want to generate hydrogen, [Maciej Nowak’s] video (embedded below) is interesting to watch because of the clever way the electrode is formed from stainless steel washers. …read more (https://hackaday.com/2021/12/20/hydrogen-generation-made-easy/)

A Label Maker That Uses AI Really Poorly
https://hackaday.com/2021/12/21/a-label-maker-that-uses-ai-really-poorly/

[8BitsAndAByte] found herself obsessively labeling items around her house, and, like the rest of the world, wanted to see what simple, routine tasks could be made unnecessarily complicated by using …read more (https://hackaday.com/2021/12/21/a-label-maker-that-uses-ai-really-poorly/)

Ground Effect Aerodynamics On An RC Car
https://hackaday.com/2021/12/21/ground-effect-aerodynamics-on-an-rc-car/

Ground effect aerodynamics will return to Formula 1 in a big way in the 2022 season, hopefully washing away the bad taste left in fan’s mouths after the recent controversial …read more (https://hackaday.com/2021/12/21/ground-effect-aerodynamics-on-an-rc-car/)

Plastics: Photopolymers for 3D Printing and Beyond
https://hackaday.com/2021/12/21/plastics-photopolymers-for-3d-printing-and-beyond/

Chances are good that if you’ve done any 3D printing, it was of the standard fused deposition modeling variety. FDM is pretty simple stuff — get a bit of plastic …read more (https://hackaday.com/2021/12/21/plastics-photopolymers-for-3d-printing-and-beyond/)

Where the Rubber Meets the Computer
https://hackaday.com/2021/12/21/where-the-rubber-meets-the-computer/