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Ultrasonic Array Powers This Halloween Spirit Writer
The spooky season is upon us, and with it the race to come up with the geekiest way to scare the kids. Motion-activated jump-scare setups are always a crowd-pleaser, but kind of a cheap thrill in our...
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The Humble NE-2 Neon Lamp Has A New Trick
Ah, the humble neon lamp. The familiar warm orange glow has graced the decks of many a DIY timepiece, sometimes in a purely indicating duty, and sometimes forming a memory element in place of a more...
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Surf Sensor Adds Depth To Finding The Ultimate Wave
To say that the ocean is a dynamic environment would be a gross understatement, especially when coastlines are involved. Waves crash, tides go in and out, and countless variables make even the usual...
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VCF East 2021: The Early Evolution of Personal Computer Graphics
The evolution of computer graphics is something that has been well documented over the years, and it’s a topic that we always enjoy revisiting with our retrocomputing readers. To wit, [Stephen A....
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DIY Hydrophone Listens in on the Deep for Cheap
The microphone is a pretty ubiquitous piece of technology that we’re all familiar with, but what if you’re not looking to record audio in the air, and instead want to listen in on what’s happening...
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Converting a Sink to an Ultrasonic Cleaner
While ultrasonic cleaning might sound a bit like the “sonic shower” from Star Trek, this is actually one case where the futuristic-sounding technology predates its use in Sci-Fi. Ultrasonic cleaners...
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Skip the Radio with This Software-Defined Ultrasound Data Link
We know what you’re thinking: with so many wireless modules available for just pennies, trying to create a physical data link using ultrasonic transducers like [Damian Bonicatto] did for a short-range,...
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