The BNC Connector And How It Got That Way

When I started working in a video production house in the early 1980s, it quickly became apparent that there was a lot of snobbery in terms of equipment. These were the days when the home video market was taking off; the Format War had been fought and won by VHS, and consumer-grade VCRs were flying off the shelves and into living rooms. Most of that gear was cheap stuff, built to a price point and destined to fail sooner rather than later, like most consumer gear. In our shop, surrounded by our Ikegami cameras and Sony 3/4″ tape decks, we derided this equipment as “ReggieVision” gear. We were young.

For me, one thing that set pro gear apart from the consumer stuff was the type of connectors it had on the back panel. If a VCR had only the bog-standard F-connectors like those found on cable TV boxes along with RCA jacks for video in and out, I knew it was junk. To impress me, it had to have BNC connectors; that was the hallmark of pro-grade gear.

I may have been snooty, but I wasn’t really wrong. A look at coaxial connectors in general and the design decisions that went into the now-familiar BNC connector offers some insight into why my snobbery was at least partially justified.

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Ask Hackaday: Why Aren’t We Hacking Cellphones?

When a project has outgrown using a small microcontroller, almost everyone reaches for a single-board computer — with the Raspberry Pi being the poster child. But doing so leaves you stuck with essentially a headless Linux server: a brain in a jar when what you want is a Swiss Army knife.

It would be a lot more fun if it had a screen attached, and of course the market is filled with options on that front. Then there’s the issue of designing a human interface: touch screens are all the rage these days, so why not buy a screen with a touch interface too? Audio in and out would be great, as would other random peripherals like accelerometers, WiFi, and maybe even a cellular radio when out of WiFi range. Maybe Bluetooth? Oh heck, let’s throw in a video camera and high-powered LED just for fun. Sounds like a Raspberry Pi killer!

And this development platform should be cheap, or better yet, free. Free like any one of the old cell phones that sit piled up in my “hack me” box in the closet, instead of getting put to work in projects. While I cobble together projects out of Pi Zeros and lame TFT LCD screens, the advanced functionality of these phones sits gathering dust. And I’m not alone.

Why is this? Why don’t we see a lot more projects based around the use of old cellphones? They’re abundant, cheap, feature-rich, and powerful. For me, there’s two giant hurdles to overcome: the hardware and the software. I’m going to run down what I see as the problems with using cell phones as hacker tools, but I’d love to be proven wrong. Hence the “Ask Hackaday”: why don’t we see more projects that re-use smartphones?

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The Supercon Badge Is A Freakin’ Computer

It hangs around your neck, comes with the cost of admission, and would blow away a desktop computer from the 1980’s. This is the Hackaday Superconference badge and you can get your hands on one for the price of admission to the ultimate hardware conference.

Everyone through the door gets one of these badges featuring a 320 x 240 color display, a full qwerty keyboard, and limitless hacking potential! The stock firmware runs a BASIC interpreter, the CP/M operating system, and includes games and Easter Eggs. It’s a giant playground, and we want to see what you can do with this custom hardware during the three days of Supercon. Get your ticket now, then join me after the break for a demo video and plenty more info.

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Friday Hack Chat: Visual Synthesis

For this week’s Hack Chat, we’re going to be discussing generating analog video for visual synthesis. What’s on the front porch?

Our guest for this week’s Hack Chat will be Jonas Bers, an audiovisual artist and performer. For their work they used hacked video mixers, a hand-built video synthesizer, and various pieces of restored/modded lab equipment and military surplus devices. Jonas has also developed the CHA/V, the Cheap, Hacky, A/V, an open source, DIY, audiovisual video synthesizer. This video synth has been built by people around the world, and has been the subject of international workshops in fancy art schools. It’s a dirt-cheap video synth, quick and easy to make, expandable and customization as a part in a larger system, and requires no computer, Arduino, microcontroller, or programming.

Jonas will be discussing entry points into hardware-based real-time video synthesis such as their own tutorial for the CHA/V, and the LZX cadet/castle DIY series. If you enjoy making analog audio circuits, and you are interested in video synthesis, they can suggest some good places to start and helpful resources. Jonas’s personal practice involves hardware-based scan-processing (aka Rutt/Etra synthesis) which they can also discuss at length.

For this week’s Hack Chat, we’ll be talking about:

  • Hardware-based video synthesis
  • Real time video synthesis
  • Common visual synthesis practices and variations

You are, of course, encouraged to add your own questions to the discussion. You can do that by leaving a comment on the Visual Synthesis Hack Chat and we’ll put that in the queue for the Hack Chat discussion.

join-hack-chat

Our Hack Chats are live community events on the Hackaday.io Hack Chat group messaging. This week we’ll be sitting down on Friday, October 19th, at noon, Pacific time. If time zones got you down, we have a handy time zone converter.

Click that speech bubble to the right, and you’ll be taken directly to the Hack Chat group on Hackaday.io.

You don’t have to wait until Friday; join whenever you want and you can see what the community is talking about.

These Twenty Projects Won The Musical Instrument Challenge In The Hackaday Prize

The Hackaday Prize is the greatest hardware competition on the planet. It’s the Academy Awards of Open hardware, and over the past few months we’ve challenged makers and artists to create the Next Big Thing. All things must come to an end, though, and last week we wrapped up the final challenge in the Hackaday Prize. The results were fantastic, with over one hundred entries to the Musical Instrument Challenge. Now, we’re ready to announce the winners.

Over the past few months, we’ve been running a series of five challenges, and picking the best twenty projects to come out of these challenges. The Musical Instrument Challenge was the final challenge in The Hackaday Prize, and now we’re happy to announce the winners. These projects have been awarded a $1,000 cash prize, and they’re moving onto the final round where one lucky winner will receive the Grand Prize of $50,000. Here are the winners of the Musical Instrument Challenge, in no particular order:

Musical Instrument Challenge Hackaday Prize finalists:

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Cool Tools: Deus Ex Autorouter

The first thing you probably asked yourself when learning how to lay out PCBs was “can’t the computer do this?” which inevitably led to the phrase “never trust the autorouter!”. Even if it hooks up a few traces the result will probably be strange to human eyes; not a design you’d want to use.

But what if the autorouter was better? What if it was so far removed from the autorouter you know that it was something else? That’s the technology that JITX provides. JITX is a company that has developed new tools that can translate a coarse textual specification of a board to KiCAD outputs autonomously.

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The Incredible Judges Of The Hackaday Prize

The last challenge of The Hackaday Prize has ended. Over the past few months, we’ve gotten a sneak peek at over a thousand amazing projects, from Open Hardware to Human Computer Interfaces. This is a contest, though, and to decide the winner, we’re tapping some of the greats in the hardware world to judge these astonishing projects.

Below are just a preview of the judges in this year’s Hackaday Prize. In the next few weeks, we’ll be sending the judging sheets out to them, tallying the results, and in just under a month we’ll be announcing the winners of the Hackaday Prize at the Hackaday Superconference in Pasadena. This is not an event to be missed — not only are we going to hear some fantastic technical talks from the hardware greats, but we’re also going to see who will walk away with the Grand Prize of $50,000.



Sherry Huss

Sherry Huss is the former vice president of Maker Media, and oversees the publishing of Make Magazine and Maker Faires across the globe. Sherry is a major advocate of ‘all things maker’ in the global community, and her vision and passion for the maker movement was instrumental in growing the Make: brand within the maker ecosystem. Under her guidance, the largest Maker Faires, the Bay Area and World Maker Faire in New York, have grown from just a few thousand people in 2006 to events with over 200,000 attendees each year. Sherry is a giant in the Maker world, and an unending advocate of maker, DIY, and everyone who makes, whether that’s through wood, code, metal, solder, or fabric.

Anool Mahidharia

Anool is an electrical engineer, and works in Test & Measurement at Lumetronics. He’s part of WyoLum, an international group of hardware nerds who are consistently pumping out projects that push the limits of how blinky, glowey, and interesting a thing can be. They’re behind some projects you may have caught at random hacker meetups, and the creators of an absurd RGB LED cube that’s also a die. Anool is, by every account, an extremely capable hardware engineer, a longtime writer for Hackaday, and is constantly travelling the world presenting the latest developments in electronics to the public.

Danielle Applestone

Before founding Other Machine Co., now Bantam Tools, makers of tiny desktop milling machines that make fantastic circuit boards, Danielle Applestone worked with DARPA to develop high-precision machines that were effectively made out of kitchen cutting boards. HDPE, it turns out, is extraordinarily mechanically stable, cuts and machines easily, and can make very rigid components. Danielle spun this research out into the Othermill, an actual successful hardware startup. Danielle talked about this experience at the Hackaday Superconference, and we’re thrilled to have her on board judging other makers in their efforts to create the next big hardware thing.

Kwabena Agyeman

Kwab is one of the leading experts in computer vision and machine learning applications, and specializes in FPGA and Chip design. His greatest contribution to Open Hardware is the OpenMV, a platform for Computer Vision, ‘at the edge’, or basically a very high performance microcontroller and camera module on a single board, that’s running computer vision algorithms. This project began as a Hackaday Prize project that was then bootstrapped into a successful business. Formerly of Planet Labs where he spent his time pulling off Apollo 13-level hacks on space assets, Kwab is among the most successful designers in the world of Open Hardware.

These are just a few of the amazingly accomplished judges we have lined up to determine the winner of this year’s Hackaday Prize. The winner will be announced on November 3rd at the Hackaday Superconference. There are still tickets available, but if you can’t make it, don’t worry. We’re going to be live streaming everything, including the prize ceremony, where one team will walk away with the grand prize of $50,000. It’s not an event to miss.