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Tiny Two-Digit Thermometer Has Long Battery Life
Like most of his work, this tiny two-digit thermometer shows that [David Johnson-Davies] has a knack for projects that make efficient use of hardware. No pin is left unused between the DS18B20...
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Drag And Drop Files On Select Arduino Boards
Historically, getting files on to a microcontroller device was a fraught process. You might have found yourself placing image data manually into arrays in code, or perhaps repeatedly swapping SD cards...
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Visualizing How Signals Travel In A PCB
If you play with high speed design for long enough, eventually you’re going to run into clock skew and other weird effects. [Robert Feranec] recently ran into this problem and found an interesting...
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Linear CCDs Make For Better Cameras
Digital cameras have been around for forty years or so, and the first ones were built around CCDs. These were two-dimensional CCDs, and if you’ve ever looked inside a copier, scanner, or one of those...
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Keeping Birds At Bay With An Automated Spinning Owl
There’s nothing wrong with building something just to build it, but there’s something especially satisfying about being able to solve a real-world problem with a piece of gear you’ve designed and...
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Sonic Screwdriver Shuts Off Mains
In the world of Doctor Who, the sonic screwdriver is a versatile tool with a wide range of capabilities. [Hartley] wanted some of that action for himself, and built a device of his own. Unable to...
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The Motor Synth Is What You Get When You Forget Hammond Organs Exist
There’s nothing new, ever. It’s all been done. But that doesn’t mean you can’t invent something interesting. A case in point is the Motor Synth, a crowdfunding project from Gamechanger Audio. It’s...
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glScopeClient: A Permissively-Licensed Remote Oscilloscope Utility
One of the most convenient things about modern digital oscilloscopes is that you can access the recorded data on a computer for later analysis, advanced protocol debugging, or simply the convenience...
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A Work Light For Hacker Events
If you’ve ever attended a hacker camp, you’ll know the problem of a field of tents lit only by the glow of laser illumination through the haze and set to the distant thump of electronic dance music....
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Make Your Own Old School LED Displays
We live in an era in which all manner of displays are cheap and readily available. A few dollars spent online can net you a two-line alphanumeric LCD, a graphical OLED screen, or all manner of other...
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Freeform ESP8266 Network Attached Data Display
Like many of us, [Josef Adamčík] finds himself fascinated with so-called “freeform” electronic designs, where the three dimensional circuit makes up sections of the device’s structure. When well...
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The Automated Solution To Your Unpopularity
You feel that you’re unpopular and no one likes you. The bad news is that if that’s the case in the real world there’s no easy way to fix it. The good news is there’s a great substitute — your...
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A Briefcase Computer For Your Hacking Needs
Decent laptop computers have been available for decades now. Despite this, there’s still something charming and enigmatic about a computer hidden within a briefcase. [MakeFailRepeat] wanted just such...
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Simulated Newton’s Cradle Makes A Flashy Desk Toy
Newton’s Cradle was once upon a time, a popular desk toy in offices around the world. For [TecnoProfesor], however, it wasn’t quite flashy enough. Instead, they built a simulated version with flashing...
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Postal-Themed Rat Rod Mower Really Delivers
There are birthday presents, and then there are birthday presents. You know, the amazing ones that are the polar opposite of phoning it in. This is one of those presents. So, [peterbrazil]’s wife is a...
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Nvidia Jetson Robots Get A Head Start With Isaac Software Tools
We live in an exciting time of machine intelligence. Over the past few months, several products have been launched offering neural network processors at a price within hobbyist reach. But as exciting...
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This Solar-Powered Ear Ring Turns With The Sun
Jewelry making offers many opportunities for the electronics tinkerer, and on these pages we’ve seen some eye-catching creations using LEDs to great effect. They all have the same limitation though,...
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3D Printed Knife Sharpening Tool Makes The Job Easy
A sharp knife is a joy to use, but many of us are guilty of buying the cheapest kitchen tools available and rarely maintaining them. Keeping knives sharp is key to working with them both safely and...
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New Circuits with Old Technology
Before the invention of transistors, vacuum tubes ruled the world. The only way to get amplification or switching (or any electrical control of current) back then was to use tubes. But some tube...
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Hackaday Links: June 2, 2019
The works of Shakespeare, Goethe, and Cervantes combined do not equal the genius of Rick And Morty. Actually, the word ‘genius’ is thrown around a bit too much these days. Rick and Morty has surpassed...
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