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A Self-Expanding PWM Driver
For smaller microcontrollers, having enough outputs for the job is sometimes a challenge. A common solution is to do some sort of multiplexing with the available outputs or perhaps something more...
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Speeding Up IOTA Proof Of Work Using FPGAs
Blockchain has existed as a concept since the early 1990s, but keeping a distributed ledger for IoT transactions wasn’t widely implemented until IOTA developed Tangle. The blockchain company was...
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Sow Your Seed Efficiently With This Multi-Way Drop Seeder
Anyone who has ever had to propagate small plants from seed will know that efficiently sowing seed can be a difficult process. Getting a consistent number of seed in each point while achieving any...
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The Book Of Dreams Brings Back All Your Memories
The retro-facing side of British social media has been abuzz for the last few days with a very neat piece of marketing form the catalogue retailer Argos: they’ve digitised all their catalogues since...
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2019 Superconference is Streaming Live Right Now!
Perhaps Pasadena is a bit too far from home, or maybe you waited a few milliseconds longer than you should have and missed the tickets when they went on sale. Whatever the reason, the fact is that the...
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The Ultimate Hacker’s Compact 4WD!
If you’ve spent any time at one of the larger European hacker camps over the last few years you’ll have seen the invasion of little electric vehicles sporting hoverboard motors as an all-in-one...
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Harmonic Analyzer Does It With Cranks And Gears
Before graphic calculators and microcomputers, plotting functions were generally achieved by hand. However, there were mechanical graphing tools, too. With the help of a laser cutter, it’s even...
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The ESP32, Laid Bare
Most readers will be familiar with the ESP32, Espressif’s dual-core processor with integrated WiFi and Bluetooth. Few of us though will have explored all of its features, including its built-in...
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UNIX Version 0, Running On A PDP-7, In 2019
WIth the 50th birthday of the UNIX operating system being in the news of late, there has been a bit of a spotlight shone upon its earliest origins. At the Living Computers museum in Seattle though...
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Arduino Does Multitouch
A lot of consumer gadgets use touch sensors now. It is a cheap and reliable way to replace a variety of knobs and switches on everything from headphones to automobiles. However, creating a custom...
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Tangible Programming Brings Code into The Real World
We love the idea of [Amos]’s Tangible Programming project. It reminds us of those great old Radioshack electronics labs where the circuitry concepts took on a physical aspect that made them way easier...
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Optical Keyboards Have Us Examining Typing at Light Speed-ish
There’s a newish development in the world of keyboards; the optical switch. It’s been around for a couple years in desktop keyboards, and recently became available on a laptop keyboard as well. These...
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Used EDM Electrodes Repurposed as Air Bearings for Precision Machine Tools
If you’ve ever played air hockey, you know how the tiny jets of air shooting up from the pinholes in the playing surface reduce friction with the puck. But what if you turned that upside down? What if...
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A Newbie Takes the SMD Challenge at Supercon
First-time visitors to Disneyworld often naively think they’re going to “do” the park in three days: one day for the Magic Kingdom, one day for Epcot, and one day for everything else. It’s easy to spot...
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This RGB Tree Has its Roots in a PCB
[Paczkaexpress]’s RGB tree is a mix of clever building techniques and artistic form that come together into quite a beautiful sculpture. The branches of his tree are made from strands of enameled...
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A Mechanical Shutter Release For A Digital Camera
Most digital cameras these days come with some kind of electronic remote shutter release. Various solutions exist, using USB cables, smartphone apps, or dedicated remotes. [Steloherd] wasn’t happy with...
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Teardown: VTech PreComputer 1000 is an Iconic PC in a Toy Wrapper
Back in the days before kids could be placated with a $50 Android burner phone, many a youngster was gifted a so-called “educational computer” to keep them occupied. Invariably looking like a fever...
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Behold a 3D Display, Thanks to a Speeding Foam Ball
We’ve seen 3D image projection tried in a variety of different ways, but this is a new one to us. This volumetric display by Interact Lab of the University of Sussex creates a 3D image by projecting...
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KiCad Action Plugins
The last two years has been a particularly exciting time for KiCad, for users, casual contributors, and for the core developers too. Even so, there are many cool new features that are still in process....
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A Scratch-built RISC-V CPU in an FPGA
“RISC architecture is going to change everything”, which is why [SHAOS] is building this cool RISC-V DIY retro-style computer. The project took inspiration from another hacker’s work in building a...
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