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Linux Fu: Watch That Filesystem
The UNIX Way™ is to cobble together different, single-purpose programs to get the effect you want, for instance in a Bash script that you run by typing its name into the command line. But sometimes you...
View ArticleVaporwave For The Parallel Port
FM synthesis is the sound of the 1980s, it’s the sound of shopping malls and Macintosh Plus. It’s the sound of the Motorola DynaTAC, busts of Helios, and the sound of ｖａｐｏｒｗａｖｅ サ閲ユ. The chips most...
View ArticleWiFi Pool Controller Only Cost $20
Pools have come a long way. It used to be you had a pump and if you were lucky it had a mechanical timer switch on it. That was it. Now you have digital controllers and spa jets and heaters. You can...
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VCF East: SDR on the Altair 8800
You’d be forgiven if you thought software defined radio (SDR) was a relatively recent discovery. After all, few outside of the hardcore amateur radio circles were even familiar with the concept until...
View ArticleMinimum Viable 1-D PONG
What makes a game a game? Like, how do we know that we’re looking at a variation of PONG when confronted with one? And how do we know how to play it? [Bertho] sought to answer this question as he...
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Biasing That Transistor Part 4: Don’t Forget the FET
The 2N3819 is the archetypal general-purpose N-channel FET. (ON Semiconductor) Over the recent weeks here at Hackaday, we’ve been taking a look at the humble transistor. In a series whose impetus came...
View ArticleTurning Tact Switches Into Keyboards
One of the great unsolved problems in the world of DIY electronics is a small keyboard. Building your own QWERTY keyboard is a well-studied and completely solved problem; you need only look at the...
View ArticleCalClock Keeps You Tied To The Mast
Now that most of what we do revolves around our phones and/or the internet, it’s nearly impossible to take a short break from work to check the ol’ calendar without being lured by the sirens on the...
View ArticleArduino Analog I/O Multiplexer
[SeanHodgins] has a project in mind where he needs to sample over 500 analog sensors. To get ready, he made a breakout board for 32-channel analog multiplexer device he wants to use. He put the project...
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Restoring an Atari 800 XL that’s Beyond Restoring
Sometimes the best way to get a hacker to do something is to tell them that they shouldn’t, or even better can’t, do it. Nothing inspires the inquisitive mind quite like the idea that they are heading...
View ArticleMonotron Gets All the Mods
[Harry Axten] turned the diminutive Korn Monotron into a playable analog synthesizer, complete with a full-sized keyboard spanning two octaves and a MIDI interface. Korg Introduced the Monotron analog...
View ArticleNo Microcontroller In This Vending Machine, D’oh!
You might think that a microcontroller would be needed to handle a vending machine’s logic. For one thing, only the correct change should activate them and the wrong change should be returned. If the...
View ArticleThis Is An Inordinate Amount Of Switches
How do you start a good habit? As a blogger, someone who spends a spectacular amount of time on Twitter, and a Thought Leader Life Coach, I can tell you: the best way to start a good habit is by doing...
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Coming Back to Curving Bullets
What do you do when you have time, thousands of dollars worth of magnets, and you love Mythbusters? Science. At least, science with a flair for the dramatics. The myth that a magnetic wristwatch with...
View ArticleFail Of The Week: Never Trust A Regulator Module
[Ryan Wamsley] has spent a lot of time over the past few months working on a new project, the Ultimate LoRa backplane. This is as its name suggests designed for LoRa wireless gateways, and packs in all...
View ArticleRubber Duck Debugging the Digital Way
Anyone who slings code for a living knows the feeling all too well: your code is running fine and dandy one minute, and the next minute is throwing exceptions. You’d swear on a stack of O’Reilly books...
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Joe Grand is Hiding Data in Plain Sight: LEDs that Look Solid but Send a Message
Thursday night was a real treat. I got to see both Joe Grand and Kitty Yeung at the HDDG meetup, each speaking about their recent work. Joe walked us through the OpticSpy, his newest hardware product...
View ArticleSuper Chromatic Peril Sensitive Sunglasses
The Joo Janta 200 super-chromatic peril-sensitive sunglasses were developed to help people develop a relaxed attitude to danger. By following the principle of, ‘what you don’t know can’t hurt you,’...
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Hacking When It Counts: The Magnetron Goes to War
In 1940, England was in a dangerous predicament. The Nazi war machine had been sweeping across Europe for almost two years, claiming countries in a crescent from Norway to France and cutting off the...
View ArticleBike-Driven Scarf Knitter is an Accessory to Warmth
Despite all our technological achievements, humans still spend a lot of time waiting around for trains. Add a stiff winter breeze to the injury of commuting, and you’ve got a classic recipe for misery....
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