Screen capture from the project’s YouTube video
" data-image-caption="" data-medium-file="https://hackaday.com/wp-content/uploads/2021/09/nix-feature.png?w=400" data-large-file="https://hackaday.com/wp-content/uploads/2021/09/nix-feature.png?w=800">Proving that an old design cast in concrete can indeed be changed, [Hans Jørgen Grimstad] has revisited his Nixie clock from 2008, cleaned up the electronics and packaging, and turned it …read more (https://hackaday.com/2021/09/18/cast-in-concrete-clock-upgraded-after-thirteen-years/)

Line Following Robot uses PID for Speed
https://hackaday.com/2021/09/18/line-following-robot-uses-pid-for-speed/

While a line-following robot may not be the newest project idea in the book, this one from [Edison Science] is a clean build using modern components and gets a good …read more (https://hackaday.com/2021/09/18/line-following-robot-uses-pid-for-speed/)

Dynamicland Makes The Whole Building The Computer
https://hackaday.com/2021/09/18/dynamicland-makes-the-whole-building-the-computer/

Every once is a while a research project comes along that has the potential to totally shake up computing and what it even means to interact with a system. The …read more (https://hackaday.com/2021/09/18/dynamicland-makes-the-whole-building-the-computer/)

We’d Like, Totally Carry This Retro Boombox Cyberdeck on Our Shoulder
https://hackaday.com/2021/09/18/wed-like-totally-carry-this-retro-boombox-cyberdeck-on-our-shoulder/

Cyberdeck. For those of a certain age, the ‘deck’ part conjures visions of tape decks, be they cassette, 8-track, or quarter-inch, and we seriously have to wonder why haven’t seen …read more (https://hackaday.com/2021/09/18/wed-like-totally-carry-this-retro-boombox-cyberdeck-on-our-shoulder/)

Electric “Radial” RC Aircraft Motor
https://hackaday.com/2021/09/19/electric-radial-rc-aircraft-motor/

For a long time radial aircraft engines, with their distinctive cylinder housings arranged in a circle, were a common sight on aircraft. As an experiment, [KendinYap], wanted to see if …read more (https://hackaday.com/2021/09/19/electric-radial-rc-aircraft-motor/)

Optical Theremin Makes Eerie Audio with Few Parts
https://hackaday.com/2021/09/19/optical-theremin-makes-eerie-audio-with-few-parts/

[Fearless Night]’s optical theremin project takes advantage of the kind of highly-integrated parts that are available to the modern hacker and hobbyist in all the right ways. The result is …read more (https://hackaday.com/2021/09/19/optical-theremin-makes-eerie-audio-with-few-parts/)

Lego Submarine Gets Balloon Ballast System
https://hackaday.com/2021/09/19/lego-submarine-gets-balloon-ballast-system/

Lego is a fun building block which vast numbers of the world’s children play with every day. However, the mechanical Technic line of Lego building blocks has long offered greater …read more (https://hackaday.com/2021/09/19/lego-submarine-gets-balloon-ballast-system/)