It's frustrating, the reluctance of some of my fellow hackspace members to put the cordless drill battery back in the charger after use.  As this is being written I've just coaxed enough energy from...

Slit lamps are prohibitively expensive in the third world areas of India where they are most needed. An invention that's been around for over a hundred years, the slit lamp is a simple-in-concept way ...

Redditor [mulishadan] — a fan of the movie WarGames — has created a singular thermostat in the form of a Defcon alert meter. Looking to learn some new skills while building, [mulishadan…

This year’s DEF CON badge is electronic, and there was much celebrating. This year’s DEF CON badge has an x86 processor, and there was much confusion. The badge this year, and every yea…

In the previous article in this series on making a personal electronic project into a saleable kit, we looked at the broader picture of the kit market for a new entrant, the importance of gauging w…

Most of North America has been locked in a record-setting heat wave for the last two weeks, and cheap window AC units are flying out of the local big-box stores. Not all of these discount units underg...

Measuring length is a pain, and it's all the fault of Imperial measurements. Certain industries have standardized around either Imperial or metric, which means that working on projects across multiple...

Latvian artist [Krists Pudzens] just put on a show in Sweden and sent us the video of his amazing kinetic sculpture. (Embedded below.) We found an arty-theory writeup of another exhibition of his t…

The sensor on your digital camera picks up a lot more than just the light that’s visible to the human eye. Camera manufacturers go out of their way to reduce this to just the visible spectrum…

Athletes of every age receive a lot of blows to the head. After a few years of this and a lot of concussions, symptoms similar to Alzheimer's can appear. For his Hackaday Prize entry, [Mihir] wanted ...

A small LCD screen can be extremely helpful with small microcontroller projects. Not everything needs to communicate to a fancy server using an ESP8266. However, if the simplicity of the character …

A few years ago, [Kingpin] a.k.a. [Joe Grand] (A judge for the 2014 Hackaday Prize) designed the most beautiful electronic prank ever. The BSODomizer is a simple device with a pass-through connection ...

Anyone who owns their own pool knows it’s not as simple as filling it up with water and jumping in whenever you want. There’s pool covers to deal with, regular cleaning with the pool va…

One of the takeaway ideas that we got from BEAM robotics was the idea that the machine itself, rather than tons of processing power, can do a lot. Your hand affords gripping, and humans have made a…

If you haven’t heard, retrogaming is a thing. 40-somethings are playing the games of their youth alongside millennials who are just discovering these classic games. There are even folks devel…

In order to help his friend prepare for a talk at DEFCON this weekend, [Craig] built an IR photodiode amplifier circuit. The circuit extended the detection range of the hack from a few inches to a …

The things Hackaday readers come up with and post over on Hackaday.io never cease to amaze us. If you've never checked it out, be careful — you can easily spend hours (or weeks) of your life just s...

How many instructions does [agp.cooper’s] computer have? Just one. How many strip boards does it use? Apparently, 41 five 41-track boards. While being one shy from the answer to life, it is s…

[Sam Barrett] is doing something that is sorely needed. He’s doing real materials research on FDM parts. There’s nothing wrong with the rough experiments like hanging a 1 L bottle of wa…

With more and more research in the field of autonomous robotics, new methods of locomotion are coming on the scene at a rapid pace. Forget wheels and tracks, forget bi-, quad-, hexa- and octopods, and...