This Pet Hacks Contest entry from [Andrea] opens the door to a great collaboration of sensors to solve a problem. The Cat At The Door project’s name is a bit of a giveaway to its purpose, but…

What’s the GitHub repository you have created that you think is of most note? Which one do you think of as your magnum opus, the one that you will be remembered by? Was it the CAD files and s…

They’re marketed as “Solar Generators” or “Solar Power Stations” but what they are is a nice box with a battery, charge controller, and inverter inside. [DoItYourselfD…

[Bhuvanmakes] says that he has the simplest open source photobioreactor. Is it? Since it is the only photobioreactor we are aware of, we’ll assume that it is. According to the post, other des…

What do you do when you’re a starving student and you need a 400 MHz logic analyzer for your digital circuit investigations? As [nanofix] shows in a recent video, you find one that’s av…

Do you like Nintendo games? How about handhelds? Do you prefer the now-venerable Game Boy Advance (GBA) to more modern platforms, but wish your aging eyes could enjoy its content on a large CRT ins…

Despite the repeated warnings of system administrators, IT personnel, and anyone moderately aware of operational security, there are still quite a few people who will gladly plug a mysterious flash…

Facebook and Yandex have been caught performing user-hostile tracking. This sort of makes today just another Friday, but this is a bit special. This time, it’s Local Mess. OK, it’s an a…

When home computers first appeared, disk drives were an expensive rarity. Consumers weren’t likely to be interested in punch cards or paper tape, but most people did have consumer-grade audio…

In the Blackberry-keyboard-based project lineage story last week, I covered how a series of open-source projects turned into Beepy, a cool Linux PDA with a lively community. To me, it’s yet a…

When a wrist mounted keyboard floated past in the Hackaday feed, a mental image surfaced, perhaps something like a Blackberry keyboard mounted on a wrist cuff, maybe with some kind of display. It&#…

Today in old school nostalgia our tipster [Clint Jay] wrote in to let us know about this rotary dial. If you’re a young whippersnapper you might never have seen a rotary dial. These things we…

How hard could it be to make a chicken coop door that can be configured to open and close automatically using a straightforward interface? That’s the question that [Jeff Sandberg] set out wit…

The Portal games were revolutionary not only for their puzzle-based, narrative-driven gameplay, but also for their unique physics engine, which let players open portals anywhere and conserve moment…

The city of London is no stranger to tall constructions today, but long before the first skyscrapers would loom above its streets, Watkin’s Tower was supposed to be the tallest structure in n…

Most of us spend our lives within reach of a device that provides a clock, stopwatch, and a timer – you’re almost certainly reading this article on such a device – but there are fewer options if yo…

For those of us who have worked on SNES and GameCube controllers, we know that these are pretty simple to get into and maintain. However, in the trend of making modern game controllers more complex…

The intersection between “woodworkers” and “programmers” is not a densely populated part of the Venn diagram, but [Michael Schiebler] is there with his Kerf Bend Wizard to h…

Recently, [Samuel Leeuwenburg] got his paws on a Francis! Francis! X1 (yes, that’s the name) espresso machine. This is the espresso machine that is mostly famous for having been in a lot of b…

If you’ve worked on a project with small LEDs, you know the frustration of determining their polarity. This ingenious LED Probe from [David] packs a lot of useful features into a simple, easy-to-im…

We’ve all been there. [Kasyan TV] had a universal adapter for a used laptop, and though it worked for a long time, it finally failed. Can it be fixed? Of course, it can, but it is up to you i…