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Hackaday Prize 2023: AutoDuct Smart Air Duct

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Modern building techniques are relying more and more on passive elements to improve heating and cooling efficiencies, from placing windows in ways to either absorb sunlight or shade it out to using high R-value insulation to completely sealing the living space to prevent airflow in or out of the structure. One downside of sealing the space in this fashion, though, is the new problem of venting the space to provide fresh air to the occupants. This 3D printed vent system looks to improve things.

Known as the AutoDuct, the shutter and fan combination is designed to help vent apartments with decentralized systems. It can automatically control airflow and also reduces external noise passing through the system using a printed shutter mechanism which is also designed to keep out cold air on windy days.

A control system enables features like scheduling and automatic humidity control. A mobile app is available for more direct control if needed. The system itself can also integrate into various home automation systems like Apple’s HomeKit.

A 100% passive house that’s also as energy-efficient as possible might be an unobtainable ideal, but the closer we can get, the better. Some other projects we’ve seen lately to help climate control systems include this heat pump control system and this automatic HVAC duct booster fan system.

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satadru
2 days ago
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This just needs ERV components and an air filter to be even more amazing!
New York, NY
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Books You Should Read: David Macaulay’s Architecture Series

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For a lot of us, there’s a bright line separating the books we enjoyed as children from the “real” books of our more mature years. We all eventually age out of the thin, brightly illustrated picture books we enjoyed in our youth, replacing them with thicker, wordier volumes with fewer and fewer illustrations, until they become so dense with information that footnotes and appendices are needed to convey all the information, and a well-written index is a vital necessity to make use of any of it.

Such books seem like a lot less fun than kids’ books, and they probably are, but most of us adjust to the change and accept the fact that the children’s section of the library doesn’t hold much that’ll interest us anymore. But not all the books that get a “JUV” label on their spines are created equal. Some are far more than picture books, even if the pictures are the main attraction. The books of British-born American author David Macaulay come to mind, particularly the books comprising his Architecture Series.

Macaulay’s books were enormously influential in developing my engineering sensibilities, and are still a pleasure to thumb through these many years later. I still learn something about the history of construction and engineering when I pull one of these books off the shelf, which makes them Books You Should Read.

The View From Below

This image hooked me — how do you even imagine a scene like this in the first place? From Underground.

I first discovered David Macaulay at an age when I was perhaps already pushing things a bit to be browsing the children’s section. I remember clearly happening upon a thin volume with a simple, single-word title: Underground. On the cover was a pen-and-ink drawing showing what a city might look like if you had X-ray vision, which was an instant hook for me. Even at that age I had an abiding if slightly weird interest in infrastructure, and seeing how electrical vaults, sewer pipes, and subway tunnels lace the parts of a city together under its streets was pretty powerful stuff. The rest of the book was just as fascinating as the cover, with intricately detailed drawings of everything lying beneath a typical city.

Aside from being a fabulous introduction to the engineering principles used to create the built environment — what Underground taught me about the different types of foundations used to support skyscrapers sticks with me to this day — I think the fact that Macaulay is somehow able to create otherwise impossible points of view to convey these principles is one of the most valuable parts of the book. There’s one illustration in Underground that shows a building from below, looking up into the forest of pilings from the bedrock upon which they sit, with the soil magically subtracted from the scene. The imagination and skill needed to visualize a scene like that and capture it on paper tells you all you need to know about Macaulay’s books.

Groined vaults and an Easter egg, from Cathedral.

Luckily for me, Underground was far from a one-off. In fact, by the time it was published in 1976, Macaulay had already published three books in what would eventually become his eight-volume Architecture Series. His first book, 1973’s Cathedral, set the tone for what was to follow: books focusing mostly on historical construction methods and materials, in fictional but period-correct settings, using intricately detailed pen-and-ink drawings to show how such buildings were constructed.

Cathedral follows the fictional French Gothic-style cathedral of Chutreaux over a period of 86 years, from its planning to the final consecration. The drawings are wonderful, with enough detail to satisfy the curiosity of older kids and adults while still telling enough of a story that younger children will be entertained. And there are Easter eggs galore — the section on building the groined vaults over the church’s choir shows a tiny bird’s nest being built atop the wall, with the baby birds eventually flying away as the ceiling is completed. Finding a treasure like that as a kid was fascinating; reading the book to my kids many years later and having them find it was poignant.

Drawing On The Impossible

Cathedral uses a lot of traditional drafting views — plans, elevations, cross-sections — to illustrate exactly how a Gothic cathedral actually stood up. Even as a youngster, I was able to see how flying buttresses worked, tracing the path of the forces from the roof trusses to the foundation through his excellent drawings. Later books of the series, like 1977’s Castle, which traces the construction of a hypothetic 13th-century castle in Wales, continued this tradition, with section drawings detailed enough to show how fireplace chimneys were built, and exactly how a castle’s many garderobes were connected to cesspits — or directly to the great outdoors. Plenty of entertainment in those illustrations, too — nothing hooks a kid better than potty humor.

All of the early books of the Architecture Series — Cathedral, Castle, and 1974’s City, which covered the construction of an imaginary Roman city, make effective use of what I’d later discover in Underground — the impossible point of view. Many of the drawings in these books show what construction would look like if a drone were hovering overhead taking pictures. Castle has a fantastic picture of the inner curtain wall and a defensive tower being built, looking down almost vertically into the structure. It shows the thick walls with cut stone faces and rubble infill, a growing spiral staircase, and the interior of the growing castle.

Illustrations like these add so much to the reader’s understanding of how buildings like these worked, and his “long shots”, where he gives overviews of the entire project, really help you appreciate the scale of the work. Castle, where the fictitious walled town of Aberwyvern springs up around the castle, has many good examples of this, with a series of pictures showing the growing settlement as you might see it from an airplane. The progression of pictures shows at first a few buildings inside the walls, centered around the town well, eventually growing outward as more half-timber, wattle-and-daub houses are added until the whole town fills the walled area and spills out into the surrounding countryside.

Other works from the Architecture Series include 1975’s Pyramid, which covered ancient Egyptian construction, and the slightly oddball Unbuilding, a 1980 book that nicely shows off Macaulay’s quirky sense of humor. The backstory for the book involves a rich Arab prince buying the Empire State Building and then having it disassembled for shipment back to his kingdom for reassembly. He uses that as a springboard to discuss how the iconic skyscraper was originally constructed, just in the reverse order. It’s a fascinating book, but unlike the earlier books, it’s one I’ve only read once; not many libraries I frequented seemed to own it.

The two last additions to the series are 1983’s Mill, which shows the establishment of a water mill in New England and the fictional mill town that grows up around it, and Mosque, which Macaulay wrote in 2003 in response to the 9/11 attacks. Mill is particularly interesting to me, partly because I grew up in New England but also because water-powered mills are historically and technically fascinating to me; some of the illustrations in the book are so detailed that you could almost use them to make blueprints for building a waterwheel and the surrounding machinery.

My collection so far. I still have a couple to go yet.

Kid’s Books, But So Much More

At the end of the day, it’s hard to argue that David Macaulay’s Architecture Series books aren’t children’s books. There’s plenty of text, and while the language is deliberately simple — but never dumbed down — it’s really the illustrations that are the star of the show. But these books are so much more than “just” children’s books. With a few — OK, many, MANY — strokes of his pen, Macaulay is able to show complex engineering ideas that a page of text would struggle to explain, and bring life to long-obsolete construction techniques. Anyone interested in the confluence of history and engineering will find these books endlessly fascinating, no matter how old they are.

So maybe these aren’t children’s books so much as they’re imagination books. And no matter where you are in your engineering journey takes you, everyone can use a little imagination.

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satadru
2 days ago
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I need to put these on the shopping list for the kid.
New York, NY
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Urban Planning Opinion Progression

3 Comments and 11 Shares
If they're going to make people ride bikes and scooters in traffic, then it should at LEAST be legal to do the Snow Crash thing where you use a hook-shot-style harpoon to catch free rides from cars.
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satadru
2 days ago
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I did see someone on in-line skates holding onto a semi-truck at 96th St and Broadway the other day to catch a free ride... Didn't see their harpoon though.
New York, NY
deebee
1 day ago
Same intersection, watched a guy on a skateboard reach out and grab the back of a flat bed and get a tow up the hill from WEA
sarcozona
1 day ago
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Epiphyte City
mareino
1 day ago
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Washington, District of Columbia
mkalus
2 days ago
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iPhone: 49.287476,-123.142136
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2 public comments
jlvanderzwan
1 day ago
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Fun fact: Amsterdam is ackchyhwally one of the least bike-friendly places in the Netherlands, relatively speaking
alt_text_bot
2 days ago
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If they're going to make people ride bikes and scooters in traffic, then it should at LEAST be legal to do the Snow Crash thing where you use a hook-shot-style harpoon to catch free rides from cars.

companies that pay you to be a fraudulent hire at a different company

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This post was written by Alison Green and published on Ask a Manager.

Remember the saga last year where the person who showed up to do the job wasn’t the same person who interviewed for it? Wondering how they pulled that off?

A reader recently forwarded me an email her spouse received from a company whose entire business model seems to be that they’ll pay you to get fraudulently hired for jobs that you then (mostly) don’t actually work. Read on.

Hi [redacted],

Hope all is well with you. This is [redacted], the CEO of [redacted company name], a software development company based in Atlanta. Nowadays, we are receiving an overwhelming number of offers, and we are experiencing a lack of talented resources who can effectively communicate with clients.

We see that you are a developer with expertise that matches our needs. We are interested in offering you a non-stop ongoing contract, which is flexible based on your availability.

Your responsibilities will include taking calls with recruiters, HR managers, or teams before and after securing a job. You will be representing yourself on a call, and the actual development work will be delivered by [redacted company name]. We will be responsible for handling everything else and also assist you with every call.

Regarding compensation for you to speak on interviews (that we will assist you to pass), we will pay you on an hourly basis until we win a job. Once we secure a job, you will be expected to take a daily or a weekly scrum meeting, depending on their team culture. You will take the 25% of income from the job for taking these calls.

Given our ability to manage multiple jobs at once, if you handle calls for multiple jobs, this position offers you an exciting and stable income.

I am interested in speaking with you to discuss this partnership further.

Well then.

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satadru
3 days ago
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!
New York, NY
minderella
25 days ago
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Interesting.
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Saturday Morning Breakfast Cereal - Ancient times

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Click here to go see the bonus panel!

Hovertext:
And if you had no dog-bites-ass receiver, it was as if summer storm had rainbowed the world, yet passed over your home as you dwelt in twilight and sorrow.


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Red Button mashing provided by SMBC RSS Plus. If you consume this comic through RSS, you may want to support Zach's Patreon for like a $1 or something at least especially since this is scraping the site deeper than provided.
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satadru
3 days ago
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New York, NY
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Saturday Morning Breakfast Cereal - History

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Click here to go see the bonus panel!

Hovertext:
C'monnnnnn hatemail.


Today's News:



Red Button mashing provided by SMBC RSS Plus. If you consume this comic through RSS, you may want to support Zach's Patreon for like a $1 or something at least especially since this is scraping the site deeper than provided.
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satadru
3 days ago
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New York, NY
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