It’s possible that among Hackaday readers are the largest community of people who have designed their own CPU in the world. We have featured many here, but it’s possible that …read more (https://hackaday.com/2026/05/13/build-the-cpu-then-build-the-calculator/)

VTech Toy Becomes PinkPad, the DIY Linux Laptop
https://hackaday.com/2026/05/13/vtech-toy-becomes-pinkpad-the-diy-linux-laptop/

Originally envisioned as a simple DIY laptop project, [kati]’s PinkPad V1 ended up being considerably more involved than expected. But the end result is a perfectly usable, stunningly pink, and …read more (https://hackaday.com/2026/05/13/vtech-toy-becomes-pinkpad-the-diy-linux-laptop/)

Measure the Earth’s Rotation Victorian Style
https://hackaday.com/2026/05/13/measure-the-earths-rotation-victorian-style/

You’ve probably seen a Foucault pendulum in a museum. This Victorian-era science demonstration is named after physicist Léon Foucault and shows how the Earth rotates compared to a pendulum moving …read more (https://hackaday.com/2026/05/13/measure-the-earths-rotation-victorian-style/)

Y-zipper: 3D Printing Flexible–Rigid Transition Mechanism for Rapid and Reversible Assembly
https://hackaday.com/2026/05/13/y-zipper-3d-printing-flexible-rigid-transition-mechanism-for-rapid-and-reversible-assembly/

Along with Velcro, zippers have become an integral part of every day life, being a quick and easy way to usually temporarily join fabric together. Which isn’t to say that …read more (https://hackaday.com/2026/05/13/y-zipper-3d-printing-flexible-rigid-transition-mechanism-for-rapid-and-reversible-assembly/)

Custom Mainboard for PS2 Portable
https://hackaday.com/2026/05/13/custom-mainboard-for-ps2-portable/

As time marches on, the retro gaming community gets more and more access to older systems. This is partially a product of modern computing having much more power to emulate …read more (https://hackaday.com/2026/05/13/custom-mainboard-for-ps2-portable/)

FreeCAD 1.1 Tutorial, For Beginners Who Like Clear Instructions
https://hackaday.com/2026/05/13/freecad-1-1-tutorial-for-beginners-who-like-clear-instructions/

If you’ve been interested in FreeCAD but haven’t known where to start, here’s a wonderful video tutorial for FreeCAD 1.1 by [Deltahedra] aimed squarely at how to model a 3D …read more (https://hackaday.com/2026/05/13/freecad-1-1-tutorial-for-beginners-who-like-clear-instructions/)

How Did Apollo Separate?
https://hackaday.com/2026/05/13/how-did-apollo-separate/

If you’ve watched a Saturn V launch, you’ve probably seen how a large rocket will often jettison a stage on the way up. There are several reasons for this — …read more (https://hackaday.com/2026/05/13/how-did-apollo-separate/)

Testing Giant Fire Darts from the Mary Rose
https://hackaday.com/2026/05/13/testing-giant-fire-darts-from-the-mary-rose/