Home Made Stirling Engines From Expedient Materials
https://hackaday.com/2022/04/13/home-made-stirling-engines-from-expedient-materials/

Many of us have read about Stirling engines, engines which form mechanical heat pumps and derive motion from the expansion and contraction of a body of air. A very few …read more (https://hackaday.com/2022/04/13/home-made-stirling-engines-from-expedient-materials/)

2022 Sci-Fi Contest: A Hand-Following Robot, Powered by Arduino
https://hackaday.com/2022/04/13/2022-sci-fi-contest-a-hand-following-robot-powered-by-arduino/

If there’s one thing audiences love in sci-fi, it’s a cute robot companion that follows the heroes around. If you want one of your own, starting with this build from …read more (https://hackaday.com/2022/04/13/2022-sci-fi-contest-a-hand-following-robot-powered-by-arduino/)

Does Your Programmer Know How Fast You Were Going?
https://hackaday.com/2022/04/13/does-your-programmer-know-how-fast-you-were-going/

News reports were everywhere that an autonomous taxi operated by a company called Cruise was driving through San Francisco with no headlights. The local constabulary tried to stop the vehicle …read more (https://hackaday.com/2022/04/13/does-your-programmer-know-how-fast-you-were-going/)

Reducing Warping in Metal 3D Prints
https://hackaday.com/2022/04/13/reducing-warping-in-metal-3d-prints/

We are used to dealing with warping when printing with thermoplastics like ABS, but metal printers suffer from this problem, too. The University of Michigan has a new technology, SmartScan, …read more (https://hackaday.com/2022/04/13/reducing-warping-in-metal-3d-prints/)

PiSquare Lets You Run Multiple HATs on a Raspberry Pi
https://hackaday.com/2022/04/13/pisquare-lets-you-run-multiple-hats-on-a-raspberry-pi/

The Raspberry Pi’s venerable 40-pin header and associated HAT ecosystem for upgrades has been a boon for the platform. It’s easy to stack extra hardware on to a Pi, even …read more (https://hackaday.com/2022/04/13/pisquare-lets-you-run-multiple-hats-on-a-raspberry-pi/)

Versatile Reflow Oven Controller Uses ESP32-S2
https://hackaday.com/2022/04/14/versatile-reflow-oven-controller-uses-esp32-s2/

[Maker.Moekoe] wanted a single controller board that was usable with different reflow ovens or hotplates. The result is a versatile board based on the ESP32-S2. You can see a video …read more (https://hackaday.com/2022/04/14/versatile-reflow-oven-controller-uses-esp32-s2/)

Great Beginnings: The Antikythera Mechanism Gets a “Day Zero”
https://hackaday.com/2022/04/14/great-beginnings-the-antikythera-mechanism-gets-a-day-zero/