Mastodawn

Unsolved Questions in Astronomy? Try Dark Matter!

https://hackaday.com/2025/04/23/unsolved-questions-in-astronomy-try-dark-matter/

Unsolved Questions In Astronomy? Try Dark Matter!

Sometimes in fantasy fiction, you don’t want to explain something that seems inexplicable, so you throw your hands up and say, “A wizard did it.” Sometimes in astronomy, instead o…

Hackaday

hackaday 5h ago

A Scratch-Built Commodore 64, Turing Style

https://hackaday.com/2025/04/23/a-scratch-built-commodore-64-turing-style/

A Scratch-Built Commodore 64, Turing Style

Building a Commodore 64 is among the easier projects for retrocomputing fans to tackle. That’s because the C64’s core chipset does most of the heavy lifting; source those and you’…

Hackaday

hackaday 8h ago

Virtual Nodes, Real Waves: a Colpitts Walkthrough

https://hackaday.com/2025/04/22/virtual-nodes-real-waves-a-colpitts-walkthrough/

Virtual Nodes, Real Waves: A Colpitts Walkthrough

If you’ve ever fumbled through circuit simulation and ended up with a flatline instead of a sine wave, this video from [saisri] might just be the fix. In this walkthrough she demonstrates sim…

Hackaday

hackaday 11h ago

How Supercritical CO2 Working Fluid Can Increase Power Plant Efficiency

https://hackaday.com/2025/04/22/how-supercritical-co2-working-fluid-can-increase-power-plant-efficiency/

How Supercritical CO2 Working Fluid Can Increase Power Plant Efficiency

Using steam to produce electricity or perform work via steam turbines has been a thing for a very long time. Today it is still exceedingly common to use steam in this manner, with said steam genera…

Hackaday

hackaday 14h ago

eInk PDA Revisited

https://hackaday.com/2025/04/22/eink-pda-revisited/

EInk PDA Revisited

In the dark ages, before iOS and Android phones became ubiquitous, there was the PDA. These handheld computers acted as simple companions to a computer and could often handle calendars, email, note…

Hackaday

hackaday 17h ago

DIY Record Cutting Lathe is Really Groovy

https://hackaday.com/2025/04/22/diy-record-cutting-lathe-is-really-groovy/

DIY Record Cutting Lathe Is Really Groovy

Back in the day, one of the few reasons to prefer compact cassette tape to vinyl was the fact you could record it at home in very good fidelity. Sure, if you had the scratch, you could go out and g…

Hackaday

hackaday 19h ago

British Wartime Periscope: a Peek Into the Past

https://hackaday.com/2025/04/22/british-wartime-periscope-a-peek-into-the-past/

British Wartime Periscope: A Peek Into The Past

We all know periscopes serve for observation where there’s no direct line-of-sight, but did you know they can allow you to peer through history? That’s what [msylvain59] documented when he p…

Hackaday

hackaday 22h ago

Game Boy PCB Assembled With Low-Cost Tools

https://hackaday.com/2025/04/22/game-boy-pcb-assembled-with-low-cost-tools/

Game Boy PCB Assembled With Low-Cost Tools

As computers have gotten smaller and less expensive over the years, so have their components. While many of us got our start in the age of through-hole PCBs, this size reduction has led to more and…

Hackaday

hackaday 23h ago

Why Physical Media Deserved To Die

https://hackaday.com/2025/04/22/why-physical-media-deserved-to-die/

Why Physical Media Deserved To Die

Over the course of more than a decade, physical media has gradually vanished from public view. Once computers had an optical drive except for ultrabooks, but these days computer cases that even sup…

Hackaday

hackaday 1d ago

What’s Sixty Feet Across and Superconducting?

https://hackaday.com/2025/04/22/whats-sixty-feet-across-and-superconducting/

What’s Sixty Feet Across And Superconducting?

What’s sixty feet (18.29 meters for the rest of the world) across and superconducting? The International Thermonuclear Experimental Reactor (ITER), and probably not much else. The last parts …

Hackaday