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When it comes to designing a mopping robot, there are a number of approaches you can pick from, including just having the movement of the robot push the soggy mop …read more

My son went over to a friends house this afternoon, when my wife had been planning on helping him with his French homework. This meant she had an hour or …read more

A couple of years ago, we covered a project called Arnis, created by [Louis Erbkamm], which allowed you to generate any portion of Earth into Minecraft blocks and maps. It …read more

What’s it like to use a 2002-era Apple eMac all-in-one in 2025? That’s what [MattKC] asked himself after obtaining one of these systems from a seller who ominously mentioned that …read more

Recently, [Vinnie] aka [vinthewrench] moved from Oregon to Arkansas to start a farmstead. This is a style of farming that focuses not just on a profitable farm where produce is …read more

Resistance standards are incredibly useful, but like so many precision references they require regular calibration, maintenance and certification to ensure that they stay within their datasheet tolerances. This raises the …read more

There are a few types of continuous 3D printing with FDM printers, with a conveyer belt and automatic build plate swapping the most common types. The advantage of build plate …read more

A lot of retrocomputer enthusiasts have a favourite system, to the point of keeping up 40 year old flame wars over which system was “best”.   In spite of the serious, …read more

Following up on user-reported cases of Battle Born LiFePO4 batteries displaying very hot positive terminals, [Will Prowse] decided to buy a brand new one of these LFP batteries for some …read more

Join Hackaday Editors Elliot Williams and Tom Nardi as they swap their favorite hacks and stories from the week. In this episode, they’ll start off by marveling over the evolution …read more

When it comes to the term ‘Raspberry Pi clones’, the most that they really clone is the form factor, as nobody is creating clones of Broadcom VideoCore-based SoCs. At least …read more

An important aspect in software engineering is the ability to distinguish between premature, unnecessary, and necessary optimizations. A strong case can be made that the initial design benefits massively from …read more

One of the joys of writing for Hackaday comes in following the world of new semiconductor devices, spotting interesting ones while they are still just entries on manufacturer websites, and …read more

Sony’s original Playstation wasn’t huge, and they did shrink it for re-release later as the PSOne, but even that wasn’t small enough for [Secret Hobbyist]. You may have seen the …read more

While some may see amateur rocketry as little more than attaching fins to a motor and letting it fly, it is, in fact, rocket science. This fact became very clear …read more

There’s an adage coined by [Ian Betteridge] that any headline ending in a question mark can be answered by the word “No”. However, Lorentz invariance – the theory that the …read more

Whenever you buy used computers there is a risk that they come with unpleasant surprises that are not of the insect variant. From Apple hardware that is iCloud-locked with the …read more

Here’s something fun from [Chad Kapper] over on HackMakeMod: Escape Room Lockbox with the Cheap Yellow Display. You may have heard of the “cheap yellow display” (CYD), so-called due to …read more

A common task in a laboratory setting is that of sampling, where a bit of e.g. liquid has to be sampled from a series of containers. Doing this by hand …read more

When we first heard the term “random laser,” we did a double-take. After all, most ordinary sources of light are random. One defining characteristic of a traditional laser is that …read more