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All the Badges of DEF CON 26 (vol 1)
Two or three years back you would see a handful of really interesting unofficial badges at DEF CON. Now, there’s a deluge of clever, beautiful, and well executed badges. Last weekend I tried to see...
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Foreshadow: The Sky Is Falling Again for Intel Chips
It’s been at least a month or two since the last vulnerability in Intel CPUs was released, but this time it’s serious. Foreshadow is the latest speculative execution attack that allows...
View ArticleA Radar Module Teardown And Measuring Fan Speed The Hard Way
If you have even the slightest interest in microwave electronics and radar, you’re in for a treat. The Signal Path is back with another video, and this one covers the internals of a simple 24-GHz radar...
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Track Everything, Everywhere with an IoT Barcode Scanner
I’ve always considered barcodes to be one of those invisible innovations that profoundly changed the world. What we might recognize as modern barcodes were originally designed as a labor-saving device...
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Rover V2 Handles Stairs as Easily as the Outdoors
Rover V2 is an open-source, 3D-printable robotic rover platform that has seen a lot of evolution and development from its creator, [tlalexander]. There are a number of interesting things about Rover...
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Don’t Forget Your Mints When Using This Synthesizer
While synthesizers in the music world are incredibly common, they’re not all keyboard-based instruments as you might be imagining. Especially if you’re trying to get a specific feel or sound from a...
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Every Shop Needs A Giant Wooden Utility Knife
Generally speaking, we don’t cover that many woodworking projects here at Hackaday. What’s the point? It’s bad enough that wood reminds us of the outside world, but it hardly ever blinks, and forget...
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Before Sending A Probe To The Sun, Make Sure It Can Take The Heat
This past weekend, NASA’s Parker Solar Probe took off for a journey to study our local star. While its mission is well covered by science literate media sources, the equally interesting...
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Circuit VR: A Tale Of Two Transistors
Last time on Circuit VR, we looked at creating a very simple common emitter amplifier, but we didn’t talk about how to select the capacitor values, or much about why we wanted them. We are going to...
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Turning Cheap WiFi Modules Into Cheap WiFi Swiss Army Knives
When the ESP8266 was released, it was sold as a simple device that would connect to a WiFi network over a UART. It was effectively a WiFi modem for any microcontroller, available for just a few bucks....
View ArticleThe Wonderful World of USB Type-C
Despite becoming common over the last few years USB-C remains a bit of a mystery. Try asking someone with a new blade-thin laptop what ports it has and the response will often include an awkward pause...
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A Tiny Steering Wheel You Can Print
Racing games are a great way to test drive that Ferrari you can’t quite afford yet, and the quality of simulations has greatly improved in the last 30 or so years. While there are all manner of...
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Radio Antenna Mismatching: VSWR Explained
If you have ever operated any sort of transmitting equipment, you’ve probably heard about matching an antenna to the transmitter and using the right co-ax cable. Having everything match — for example,...
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Bench Power Supply Packs a Lot into a DIN-Rail Package
We’re not sure why we’ve got a thing for DIN-rail mounted projects, but we do. Perhaps it’s because we’ve seen so many cool industrial control cabinets, or maybe the forced neatness of DIN-mounted...
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An Achievable Underwater Camera
We are surrounded by sensors for all forms of environmental measurement, and a casual browse through an electronics catalogue can see an experimenter tooled up with the whole array for a relatively...
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When Every Last Nanoamp Matters
You can get electricity from just about anything. That old crystal radio kit you built as a kid taught you that, but how about doing something a little more interesting than listening to the local AM...
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How The 8087 Coprocessor Got Its Bias
Most of us have been there. You build a device but realize you need two or more voltages. You could hook up multiple power supplies but that can be inconvenient and just not elegant. Alternatively,...
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PC in an SNES Case is a Weirdly Perfect Fit
For better or for worse, a considerable number of the projects we’ve seen here at Hackaday can be accurately summarized as: “Raspberry Pi put into something.” Which is hardly a surprise, the Pi is so...
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Simple ESP8266 Weather Station using Blynk
Today’s hacker finds themself in a very interesting moment in time. The availability of powerful microcontrollers and standardized sensor modules is such that assembling the hardware for something like...
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OMEN Alpha: A DIY 8085-Based Computer
[Martin Malý] has put together a sweet little 8085-based single board computer called OMEN. He needed a simple one for educational purposes, and judging by the schematic we think he’s succeeded. Now...
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