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The Libre Space Foundation Reviews Software Defined Radios
If you want to go to the next level with software defined radio (SDR), there are a lot of choices. The RTL-SDR dongles are fine, but if you get serious you’ll probably want something else. How do you...
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Warm Up to Cooking With a Recipe-Randomizing Toaster
Did you get a thermal printer when they were hot stuff, but then your interest cooled when you couldn’t decide what to do with it? Something similar happened to [Sunyecz22], and the poor printer sat...
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Adding RGB To A CRT
There was a time when all TVs came with only an antenna socket on their backs, and bringing any form of video input to them meant dicing with live-chassis power supplies. Then sets with switch-mode...
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Decentralized Privacy-Preserving Proximity Tracing
As we continue through the pandemic, whether we are on lockdown or still at work, there is a chance for all of us that we could still pick up the virus from a stray contact. Mapping these infections...
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Tell Time like It’s 1960 With This All-Transistor Digital Clock
When you’ve got time on your hands, doing something the hard way can be therapeutic. Not that the present situation and the abundance of free time that many are experiencing has anything to do with...
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Controlling A Building Sized Pipe Organ With Midi
Musical instruments come in all shapes and sizes. For sheer scale and complexity though, you can’t beat pipe organs. [Rob Scallon] visited the Fourth Presbyterian Church in Chicago to look at their...
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A Fantastic Raspberry Pi Handheld Just Got Better
Last year, we brought you word of the MutantC by [rahmanshaber]. The Raspberry Pi handheld was more than a little inspired by the classic Nokia Sidekick, with a sliding display and physical QWERTY...
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Accessible Controller Plays Around with Modularity
Video games are a great way to have some fun or blow off a little steam when real life becomes laughable. But stock controllers and other inputs are hardly one size fits all. Even if you have no...
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Iceland Is Doing Its COVID-19 Proximity Tracing The Open Source Way
As governments around the world grapple with the problem of tracing those who have had contact with a person known to have been infected with the COVID-19 virus, attention has turned to the idea of...
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Seven-Segment Single-Steps Through the Time
Have you ever looked at the time, and then had to look again because it just didn’t register? This phenomenon seems more prevalent with phone timepieces, but it’s been known to happen with standard...
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Background Substitution, No Green Screen Required
All this working from home that people have been doing has a natural but unintended consequence: revealing your dirty little domestic secrets on a video conference. Face time can come at a high price...
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Planetary Gears Tell Time In This Ornamental Clock
A clock is perhaps one of the the most popular projects among makers. Most designs we see are purely electronic and do not bother with the often more complicated mechanical part. Instructables user...
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Harvesting Energy From Ambient Moisture
Generating electricity out of thin air is the fantasy for our modern technology dependant world, but still falls squarely in the world of science fiction. However, researchers from the University of...
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The Key To This City Opens A Real Lock
There are few more satisfying moments than the first time you pick a lock. No matter that it’s a dollar-store padlock that you opened with a pick from a $10 eBay kit, the magic of something that...
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Bike Lock Secures Car
[Buttim] loses his car a lot, which might sound a little bit like the plot from an early-00s movie, but he assures us that it’s a common enough thing. In a big city, and after several days of not...
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$100k to Crack a Bitcoin Wallet
When Bitcoin peaked a few years ago, with single coins reaching around $18,000 USD, heartbreaking stories began circulating about people who had tens or hundreds of coins they mined in the early days...
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Software-Defined Radio Made Easy
Just a few decades ago, getting into hobby radio meant lots of specialty hardware, and making changes to your setup to work on various frequencies wasn’t particularly easy. Since software-defined...
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8mm Film Scanner Grows Into a Masterpiece
Digitizing film is a tedious process that becomes a lot more fun if you spend more of your time building a digitizer and less time actually working working with old film. [Heikki Hietala] has been at...
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Clever Suction for Robot Arm Automates Face Shield Production
We’re certainly familiar with vacuum grabbers used in manufacturing to pick items up, but this is a bit different. [James Wigglesworth] sent in some renders and demo video (embedded after the break) of...
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Hackaday Links: April 12, 2020
Anyone who worked in the tech field and lived through the Y2K bug era will no doubt recall it as a time seasoned with a confusing mix of fear and optimism and tempered with a healthy dose of panic, as...
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