Old 3D Printer Parts Repurposed Into DIY Camera Slider

What do you do with an old 3D printer? They’re full of interesting components, after all, from switches and motors to lovely smooth rails. [Mukesh Sankhla] had a great idea—why not repurpose …

Dog Plays Chess On ESP32

The ESP32 is s remarkably powerful microcontroller, where its dual-core processor and relatively high clock speed can do some impressive work. But getting this microcontroller designed for embedded…

Vintage Audio Amp Gets LED Lighting Upgrade

Vintage hi-fi gear can be very attractive, particularly compared to modern stuff. However, when this stuff starts getting into its third or fourth decade after production, things start to wear out.…

Inside A Diamond Plant

While you tend to think of diamonds as ornamental gemstones, diamonds also have many important industrial uses, and many of those diamonds are now synthetic polycrystalline diamonds. How are they m…

Nanoscale Imaging And Control Of Altermagnetism In MnTe

Altermagnetism is effectively a hybrid form of magnetism and ferromagnetism that might become very useful in magnetic storage as well as spintronics in general. In order to practically use it, we f…

An LCD, Touch Sensor, USB-C, And A Microcontroller For A Buck

[CNLohr] has been tinkering with some fun parts of late. He’d found out that ordinary LCD screens could be used as simple touch sensors, and he had to try it for himself. He ended up building…

The Bendix G-15 Runs 75,000 Lines Of Code

There’s a Blue Bendix in Texas, and thanks to [Usagi Electric] it’s the oldest operating computer in North America.  The Bendix G-15, a vacuum tube computer originally released in 1956,…

Custom Firmware For Even Cheaper Bluetooth Thermometers

Readers may recall when we first covered the $5 Xiaomi LYWSD03MMC temperature and humidity sensor back in 2020. Prolific hacker [Aaron Christophel] wrote a custom firmware for the affordable gadget…

Intel Terminates X86S Initiative After Formation Of New Industry Group

Although the world of the X86 instruction set architecture (ISA) and related ecosystem is often accused of being ‘stale’ and ‘bloated’, we have seen a flurry of recent activ…

Building A Custom Swiss Army Knife

The Swiss Army knife is the most well-known multitool, combining a bunch of functionality into a compact package. [Jeff Gough] decided to build a custom example featuring a selection of his favorit…

Training A Self-Driving Kart

There are certain tasks that humans perform every day that are notoriously difficult for computers to figure out. Identifying objects in pictures, for example, was something that seems fairly strai…

3D Printing A Big Lego Christmas Tree

Lego make lots of neat floral arrangements these days, and even little Christmas trees, too. While they’re fun to build out of tiny little blocks, they’re a little small for use as your…

It’s Official: The North Pole Is Moving

Every scout knows how to read a compass, and that there is a magnetic north and a true north. That’s because the Earth’s magnetic field isn’t exactly aligned with the North Pole. …

Rudolph’s Sleigh On A North Pole PCB

Each Christmas, [Adam Anderson], [Daniel Quach], and [Johan Wheeler] (meanwhile going by ‘the Janky Jingle Crew’)—set themselves the challenge of outdoing their previous creations. Last…

Making A Mechanical Watch From Scratch Is Fine Work

There are plenty of hard jobs out there, like founding your country’s nuclear program, or changing the timing chain on a BMW diesel. Making your own mechanical watch from scratch falls under …

Hackaday Podcast Episode 301: Hacking NVMe Into Raspberry Pi, Lighting LEDs With Microwaves, And How To Keep Your Fingers

Twas the week before Christmas when Elliot and Dan sat down to unwrap a pre-holiday bundle of hacks. We kicked things off in a seasonally appropriate way with a PCB Christmas card that harvests pow…

Building A Diet Coke Button

[mars91] had an interesting problem to solve—his girlfriend often requested Diet Coke, but yelling for one across the apartment was frustrating and impractical. A dedicated Diet Coke button seemed …

Embossing Leather With A Pipe Bender And 3D Printed Tooling

Embossed leather belts can be deliciously stylish. However, the tooling for making these fashionable items is not always easy to come by, and it rarely comes cheap. What do we do when a tool is exp…

Subchannel Stations: The Radio Broadcasts You Didn’t Know Were There

Analog radio broadcasts are pretty simple, right? Tune into a given frequency on the AM or FM bands, and what you hear is what you get. Or at least, that used to be the way, before smart engineers …

Multimeter Gets Socket Upgrade To Use Nicer Probes

[Piffpaffpoltrie] had a problem. They found the InLine VA40R to be a perfectly usable multimeter, except for a couple of flaws. Most glaring among these were the tiny sockets for the test probes. T…