Fluid-Implicit-Particle or FLIP is a method for simulating particle interactions in fluid dynamics, commonly used in visual effects for its speed. [Nick] adapted this technique into an impressive FLIP business …read more (https://hackaday.com/2025/08/12/leds-that-flow-a-fluid-simulation-business-card/)

Creating a New Keyboard Flex for an Old Calculator
https://hackaday.com/2025/08/12/creating-a-new-keyboard-flex-for-an-old-calculator/

[Menadue] had a vintage Compucorp 326 calculator with an aging problem. Specifically, the flex cable that connects the button pad had turned corroded over time. However, thanks to the modern …read more (https://hackaday.com/2025/08/12/creating-a-new-keyboard-flex-for-an-old-calculator/)

That’s no Moon, er, Selectric
https://hackaday.com/2025/08/12/thats-no-moon-er-selectric/

If you learned to type anytime in the mid-part of the 20th century, you probably either had or wanted an IBM Selectric. These were workhorses and changed typing by moving …read more (https://hackaday.com/2025/08/12/thats-no-moon-er-selectric/)

Running Guitar Effects on a PlayStation Portable
https://hackaday.com/2025/08/13/running-guitar-effects-on-a-playstation-portable/

If your guitar needs more distortion, lower audio fidelity, or another musical effect, you can always shell out some money to get a dedicated piece of hardware. For a less …read more (https://hackaday.com/2025/08/13/running-guitar-effects-on-a-playstation-portable/)

Josef Prusa Warns Open Hardware 3D Printing is Dead
https://hackaday.com/2025/08/13/josef-prusa-warns-open-hardware-3d-printing-is-dead/

It’s hard to overstate the impact desktop 3D printing has had on the making and hacking scene. It drastically lowered the barrier for many to create their own projects, and …read more (https://hackaday.com/2025/08/13/josef-prusa-warns-open-hardware-3d-printing-is-dead/)

Ore Formation: Introduction and Magmatic Processes
https://hackaday.com/2025/08/13/ore-formation-introduction-and-magmatic-processes/

Hackaday has a long-running series on Mining and Refining, that tracks elements of interest on the human-made road from rocks to riches. What author Dan Maloney doesn’t address in that …read more (https://hackaday.com/2025/08/13/ore-formation-introduction-and-magmatic-processes/)

PCB Business Card Plays Pong, Attracts Employer
https://hackaday.com/2025/08/13/pcb-business-card-plays-pong-attracts-employer/

Facing the horrifying realization that he’s going to graduate soon, EE student [Colin Jackson] AKA [Electronics Guy] needed a business card. Not just any business card: a PCB business card. …read more (https://hackaday.com/2025/08/13/pcb-business-card-plays-pong-attracts-employer/)