Hackaday.com

We seldom talk about 3D printing lenses because most techniques can’t possibly produce transparent parts of optical quality. However, you can 3D print something like a lens, as [Luke Edwin] demonstrates, …read more

Key to efficient hardware emulation is an efficient mapping to the underlying CPU’s opcodes. Here one is free to target opcodes that may or may not have been imagined for …read more

Disposable cameras are a fun way to get into classical photography. However, they can also be a valuable source of interesting parts that can be put to other uses. For …read more

There are plenty of lovely e-readers out on the market that come with an nice big e-paper display. There aren’t nearly as many that come with two. [Martin den Hoed] developed the …read more

If you read about Hall effect sensors — the usual way to detect and measure magnetic fields these days — it sounds deceptively simple. There’s a metal plate with current …read more

Currently quartz crystal-based oscillators are among the most common type of clock source in electronics, providing a reasonably accurate source in a cheap and small package. Unfortunately for high accuracy …read more

There’s no accounting for taste, but it’s hard to argue with The Autopian when they declare that this Nixie tube dash by [David Forbes] is “the coolest speedometer of all …read more

Despite the Commodore 64 having been out of production for probably longer than many Hackaday readers have been alive, its SID audio chip remains a very popular subject of both …read more

We love 3D printing here, but we also love clean air, which produces a certain tension. There’s no way around the fact that printing produces various volatile organic compounds (VOCs), …read more

Everyone loves tiny microcontroller boards, and the ESP32-C3 Super Mini boards are no exception. Unfortunately if you just casually stroll over to your nearest online purveyor of such goods to …read more

[Distracted by Design] loves gear from the 1980s, though some of it isn’t as useful as it used to be. He happened across a cheap old FM radio with a …read more

[It’s Triggy!] had a problem to solve. His grandma was having issues with hand tremors, which made the basic tasks of daily life difficult to perform. He decided to explore …read more

What do you look for in a travel keyboard? For me, it has to be split, though this condition most immediately demands a carrying solution of some kind. Wirelessness I …read more

Can a long-obsolete Linux phone from 2009 be of use in 2025? [Yaky] has a Nokia N900, and is giving it a go. Back in the 2000s, Nokia owned the mobile …read more

To the surprise of almost nobody, the unprecedented build-out of datacenters and the equipping of them with servers for so-called ‘AI’ has led to a massive shortage of certain components. …read more

In an excellent example of one of the most overused XKCD images, the libxml2 library has for a little while lost its only maintainer, with [Nick Wellnhofer] making good on …read more

[Alireza Alavi] wanted to use an e-ink tablet as a Linux monitor. Why? We don’t need to ask. You can see the result of connecting an Onyx BOOX Air 2 …read more

Recently, [Edward Schmitz] wrote in to let us know about his Hackaday.io project: SigCore UC: An Open-Source Universal I/O Controller With Relays, Analog I/O, and Modbus for the Raspberry Pi. …read more

For people who build their own model trains there are a range of manufacturers from whom a power bogie containing the motor and drive can be sourced. But as [Le …read more

Few of us complain that hot dogs take too long to cook, because we buy them from a stand. Still, if you do have to make your own dog, it …read more