Clik here to view.
Biasing That Transistor: The Emitter Follower
We were musing upon the relative paucity of education with respect to the fundamentals of electronic circuitry with discrete semiconductors, so we thought we’d do something about it. So far we’ve taken...
View ArticleAn Ultrasound Driver With Open Source FPGAs
Ultrasound imaging has been around for decades, but Open Source ultrasound has not. While there are a ton of projects out there attempting to create open ultrasound devices, most of this is...
View ArticleDon’t Flake on Your Fish—Feed them Automatically
We get it. You love your fish, but they can’t bark or gently nip at your shin flesh to let you know they’re hungry. (And they always kind of look hungry, don’t they?) One day bleeds into the next, and...
View ArticleHackaday Belgrade is On: Join LiveStream and Chat!
Good morning Hackaday universe! Hackaday Belgrade 2018 has just started, and we’re knee-deep in sharing, explaining, and generally celebrating our craft. But just because you’re not here doesn’t mean...
View ArticleTheir Battery is Full of Air
Storing electrical energy is a huge problem. A lot of gear we use every day use some form of battery and despite a few false starts at fuel cells, that isn’t likely to change any time soon. However,...
View ArticleWatch the Honeycomb Clock Gently Track Time
We love clocks here at Hackaday, and so does [John Whittington]. Last year he created this hexagonal honey clock (or “Honock”) by combining some RGB LEDs with a laser-cut frame to create a smooth time...
View ArticleClik here to view.
A Custom Keypad with Vision
A combination of cheap USB HID capable microcontrollers, the ability to buy individual mechanical keys online, and 3D printing has opened up a whole new world of purpose-built input devices....
View ArticleDisaster Area Communications With Cloud Gateways
2017, in case you don’t remember, was a terrible year for the Caribbean and Gulf coast. Hurricane Maria tore Puerto Rico apart, Harvey flooded Houston, Irma destroyed the Florida Keys, and we still...
View ArticleThe Robots Were Coming! The Robots Were Coming!
The recent influx of home assistants proves that everything old is new again. If we told you about a life-sized robot that was self-charging, had a map of your home for navigation, and responded to...
View ArticleMuscle Your Way into Music
Inspired by an old Old Spice commercial, [Juliodb96] decided he too wanted to make music by flexing his muscles. An Arduino and a MyoWare sensor did the trick. However, he also tells you how to make...
View ArticleClik here to view.
Stretching My Skills: How (and Why) I Made My Own Compression Sleeves
Have you ever noticed how “one size fits all” often means “one size poorly fits all”? This became especially clear to me when I started using a compression sleeve on my arm. Like any hacker, this...
View ArticleTalking to Laptop Batteries with the ESP8266
It’s not something you often give a lot of thought to, but the modern consumer laptop battery is a pretty advanced piece of technology. Not only does it pack several dozen watt-hours of energy into a...
View ArticleStrike a Chord With This LED Ukulele
You may laugh off the ukulele as a toy or joke instrument, and admittedly, their starting price tag and the quality that usually comes with such a price tag doesn’t help much to get a different opinion...
View ArticleClik here to view.
Smart Plugs Don’t Save You Energy, But Don’t Consume Much Either
Amazon Alexa, Google Home, and just about every electronic device manufacturer are jumping on the bandwagon of connected devices. They promise us the ability to turn on our toaster from another room,...
View ArticleClik here to view.
Badge Bling And More At LayerOne 2018
The security conference LayerOne 2018 took place this past weekend in Pasadena, California. A schedule conflict meant most of our crew was at Hackaday Belgrade but I went to LayerOne to check it out as...
View ArticleClik here to view.
Spanning The Tree : Dr Radia Perlman & Untangling Networks
As computer networks get bigger, it becomes increasingly hard to keep track of the flow of data over this network. How do you route data, making sure that the data is spread to all parts of the...
View ArticleTiny $25 Spectrometer Aims to Identify Materials with Ease
Reflectance spectrometers work on a simple principle: different things reflect different wavelengths in different amounts, and because similar materials do this similarly, the measurements can be used...
View ArticleClik here to view.
Put The 3D Printer To Sleep So You Can Rest Easy
At this point you’ve probably already heard the news: cheap Chinese 3D printers sometimes catch fire. Now we can’t say we’re shocked to find out that absolute bottom of the barrel gear wasn’t designed...
View ArticleLaser-Powered Flying Machine Weighs Milligrams
We’ve become used to seeing some beautiful hand-made creations at the smaller end of the flying machine scale, tiny aircraft both fixed and rotary wing. An aircraft that weighs a few grams is entirely...
View ArticleClik here to view.
Friday Hack Chat: Logic Noise
If you like your synthesizers glitchy, squawky, or simply quick-and-dirty, you won’t want to miss this week’s Hack Chat with Hackaday’s own [Elliot Williams], because he’ll be brain-dumping everything...
View Article