Gaze Upon The Swimming Mechanical Stingray, Made With LEGO
https://hackaday.com/2022/12/10/gaze-upon-the-swimming-mechanical-stingray-made-with-lego/

Stingrays have an elegant, undulating swimming motion that can be hypnotic. [Vimal Patel] re-created this harmony with his fantastic mechanical mechanical stingray using LEGO pieces and a LEGO Technics Power …read more (https://hackaday.com/2022/12/10/gaze-upon-the-swimming-mechanical-stingray-made-with-lego/)

Lisp Runs This Microcontroller Pendant
https://hackaday.com/2022/12/10/lisp-runs-this-microcontroller-pendant/

As a programming language, Lisp has been around longer than any other active language except for Fortran. To anyone who regularly uses it, it’s easy to see why: the language …read more (https://hackaday.com/2022/12/10/lisp-runs-this-microcontroller-pendant/)

A VM In An AI
https://hackaday.com/2022/12/10/a-vm-in-an-ai/

AI knoweth everything, and as each new model breaks upon the world, it attracts a new crowd of experimenters. The new hotness is ChatGPT, and [Jonas Degrave] has turned his …read more (https://hackaday.com/2022/12/10/a-vm-in-an-ai/)

Fixing (And Improving!) an Annoying Apartment Entry System
https://hackaday.com/2022/12/11/fixing-and-improving-an-annoying-apartment-entry-system/

[Zak]’s two-floor apartment has a typical door entry control system, but the setup is less than ideally convenient. The wall-mounted telephone-like intercom is downstairs, but [Zak] is usually upstairs. What’s …read more (https://hackaday.com/2022/12/11/fixing-and-improving-an-annoying-apartment-entry-system/)

NE555-Based Electronic Dice
https://hackaday.com/2022/12/11/ne555-based-electronic-dice/

It has become a bit of a running joke in the Hackaday community to suggest that a project could or should have been done with a 555 timer. [Tim] has …read more (https://hackaday.com/2022/12/11/ne555-based-electronic-dice/)

A Straightforward Old-Fashioned DAC
https://hackaday.com/2022/12/11/a-straightforward-old-fashioned-dac/

With modern microcontrollers, the process of interfacing with the analogue world is easy. Simply enable the on-board DAC or ADC, and talk to the world. If you’ve ever done this …read more (https://hackaday.com/2022/12/11/a-straightforward-old-fashioned-dac/)

PDP-8 Plays Period Popcorn Piece
https://hackaday.com/2022/12/11/pdp-8-plays-period-popcorn-piece/