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Mechanisms: Velcro
As a species, we’ve done a pretty good job at inventing some useful devices. But as clever as we think we are, given sufficient time, natural selection will beat us at our game at almost every turn. So...
View ArticleCompletely Scratch-Built Electronic Speed Controller
Driving a brushless motor requires a particular sequence. For the best result, you need to close the loop so your circuit can apply the right sequence at the right time. You can figure out the timing...
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When 4 + 1 Equals 8: An Advanced Take On Pointers In C
In our first part on pointers, we covered the basics and common pitfalls of pointers in C. If we had to break it down into one sentence, the main principle of pointers is that they are simply data...
View ArticleHome Made 5-Axis CNC Head Is A Project To Watch
[Reiner Schmidt] was tired of renting an expensive 5-axis CNC head for projects, so he decided to build his own. It’s still a work in progress, but he’s made remarkable progress so far. The project is...
View ArticleFast LED Matrix Graphics For The ESP32
Many of you will have experimented with driving displays from your microcontroller projects, and for most people that will mean pretty simple status information for which you’d use standard libraries...
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Nerf blaster goes next-level with propane power
There are no shortage of Nerf gun mods out there. From simply upgrading springs to removing air restrictors, the temptation of one-upping your opponents in a Nerf war speaks to many! Not content with...
View ArticleBuilding a POV Display On A PC Fan
We’ve covered plenty of persistence of vision (POV) displays before, but this one from [Vadim] is rather fun: it’s built on top of a PC fan. He’s participating in a robot building competition soon and...
View ArticleTracktorino Shields You From Poor Interfaces
On-screen controls in a digital audio workstation expand the power of a DJ or musician, but they are not intuitive for everyone. The tactility of buttons, knobs, sliders and real-world controls feels...
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Computers May Someday Need A Drink
“We want to put water right into your processor.” If that statement makes you sweat, that is good. Sweating is what we’re talking about, but it’s more involved than adding some water like a potted...
View ArticleBlueprints Make It Easy To Make (Some) Alexa Skills
If you can code, you can create an Alexa skill — the programs that allow an Amazon Echo or similar device interact with you. What if you can’t code or you are just too lazy to do all the setup? Amazon...
View ArticleGuerillaClock Could Save This City Thousands
They say necessity is the mother of invention. But if the thing you need has already been invented but is extremely expensive, another mother of invention might be budget overruns. That was the case...
View ArticleWhen Detecting Lines Is Harder Than Expected
[Conor Patrick] is no stranger to hardware development, and he’s had an interesting project for the past few months. He’s attempting to create a tool to convert images of technical drawings (such as...
View ArticleFail of the Week: The Spot Welder Upgrade That Wasn’t
Even when you build something really, really nice, there’s always room for improvement, right? As it turns out for this attempted upgrade to a DIY spot welder, not so much. You’ll no doubt recall [Mark...
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Spoofing Cell Networks with a USB to VGA Adapter
RTL-SDR brought cheap and ubiquitous Software Defined Radio (SDR) to the masses, opening up whole swaths of the RF spectrum which were simply unavailable to the average hacker previously. Because the...
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What Does ‘Crypto’ Actually Mean?
This article is about crypto. It’s in the title, and the first sentence, yet the topic still remains hidden. At Hackaday, we are deeply concerned with language. Part of this is the fact that we are a...
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Robotics Module Challenge: Build Robot, Win Prizes
Brand new today, we’re going to go all in with the Robotics Module Challenge! This is the newest part of the 2018 Hackaday Prize which is only six weeks old, and already we’ve seen almost six hundred...
View ArticleBargain Bin Barcode Scanner Keeps Track Of Shopping Needs
For most people, a Post-It note or dry-erase board suffices to ensure that household consumables are replenished when they’re used up. But hackers aren’t like most people, so this surplus barcode...
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Teardown: LED Bulb Yields Tiny UPS
Occasionally you run across a product that you just know is simply too good to be true. You might not know why, but you’ve got a hunch that what the bombastic phrasing on the package is telling you...
View ArticleDissecting the AVR debugWire
Anyone who’s ever written more than a dozen or so lines of code knows that debugging is a part of life in our world. Anyone who’s written code for microcontrollers knows that physical debugging is a...
View ArticleHeat Seeking Robot and Camera Tear Down
[Marco Reps] found an HT02 thermal imaging camera in his mailbox. He found the resolution was fine for looking at big objects but worthless for examining circuit boards. So he decided to just tear it...
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