Downdraft Device Dismisses Dust

Woodworking is messy business, especially the sanding part. But even if you don’t care what happens to your shop floor, you don’t want dead tree particulate matter in your lungs. Wearing a mask or even a respirator is a good start, but a dust collection system is better. Someday, [XYZ Create] might have a shop-wide sawdust-slurper installed. In the meantime, he made a downdraft table out of scrap plywood and a plastic storage box.

The only thing he didn’t already have on hand was a port that matched his shop vacuum. We like his workaround to avoid drilling a huge hole in plastic that would certainly crack — use a hose clamp to get the OD of the port, heat up the clamp on a hot plate, and let it melt a hole into the box. Hopefully, he at least opened a window. [XYZ Create] glued four pieces of scrap plywood together for the top, and drilled all 117 holes by hand. Who needs pegboard?

Not fancy or big enough for your needs? Here’s one with a built-in filtration system.

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Fresh-Squeezed OJ Served In Orange Peel-Ay

Though it’s really more apple cider weather here at Hackaday HQ, freshly-squeezed OJ is a treat that knows no season. Sure generates a lot of peel, though. Not something you think about when you’re used to buying it in jugs at the grocery store. What a waste, huh?

Italian design firm [Carlo Rotti] teamed up with global energy company [Eni] to develop “Feel the Peel”, a 10-foot-tall real-time juice bar that celebrates the orange by using the entire thing. Fifteen hundred juicy orbs move single-file down the circular track toward their total destruction. One at a time, they are severed in half and wrung out by the machine, and their peels are dropped into a clear bin for all to see. Once the peels dry out, they are shredded, mixed with PLA, and fed into a delta printer that prints juice cups right there on site.

This live process of reuse is pretty interesting to watch — check it out after the break. [Eni] touts this as completely circular, but that really depends on what happens to the cups. If they collect the empties and compost them, great. Anyway, it seems way more sustainable than the Juicero.

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Superconference Interview: Ted Yapo

We’re just two weeks away from the fifth annual Hackaday Superconference, the single biggest gathering of hardware enthusiasts on at least one continent. It’s gearing up to be great, and we’re super excited for the opportunity to bring you such a diverse array of talks, workshops, and more.

What makes Supercon so great? All the awesome people you meet there. One of them is [Ted Yapo], who joined the Hackaday writing crew this year after gracing our pages and winning our contests for so long. You might remember him as the guy who turned an innocent USB-to-serial adapter into an SDR transmitter, or as the guy who tried to jump-start a car with a coin cell.

At last year’s Supercon, [Ted] gave a talk about dealing with cheap spectrum analyzers, which doubled as a live look into the article he wrote for the Hackaday Journal of What You Don’t Know. [Mike Szczys] caught up with [Ted] last year for a brief interview in the hardware hacking area, which you can catch after the break.

[Ted]’s back again this year with a talk about building an open-source multi-GHz sampling ‘scope, and why that’s harder than it seems. You really should be there, you know. Oh, what? It’s sold out? Don’t worry, just kick back and watch the live stream! Subscribe to our YouTube channel and you’ll be notified when it starts, which will be around 10:00 am Pacific on November 15th.

If you do already have a Supercon ticket, but didn’t get tickets for the workshop you wanted, go check again! We released a limited amount of tickets this morning and emailed everyone about it. See you there!

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Godot Machine Is The Project You’ve Been Waiting For

Are you waiting for something that may never happen? Maybe it’s the end of your ennui, or the release of Half Life 3. While you wait, why not build a Godot Machine? Then you can diversify your portfolio and wait for two things that could happen today, tomorrow, or at sunrise on the 12th of Never.

The Godot Machine is a functional art piece that uses a solar panel and a joule thief to charge a bank of capacitors up to 5V. Whenever that happens, the Arduino comes online and generates a 20-bit random number, which is displayed on an LED bar. If the generated number matches the super-secret number that was generated at first boot and then stashed away in EEPROM, the Machine emits a victory beep and lights a green LED. Then you can go back to complaining about whatever.

We like that [kajnjaps] made his own chaos-based random number generator instead of just calling random(). It uses a guitar string to collect ambient electronic noise and an entropy generator to amplify it. Then the four least significant digits are used to seed the logistical map, so the initial value is always different.

You don’t have to create your own entropy for truly random numbers, though it’s probably more fun that way. Did you know that someone wrote an Arduino entropy library?

Josephine Peary, First Lady Of The Arctic

In the late nineteenth century, there was only one Earthly frontier left to discover: the North Pole. Many men had died or gone insane trying to reach 90°N, which, unlike the solidly continental South Pole, hides within a shifting polar sea.

One of history’s most driven Pole-seekers, Robert Peary, shocked the world when he announced that his wife Josephine would accompany him on his expedition to Greenland. The world responded, saying that she, a Washington socialite with no specialized training, had absolutely no business going there. But if it weren’t for Jo’s contributions, Robert would probably have never made it to the Pole, or even out of Greenland. Sewing and cooking skills may not seem like much, but they are vital for surviving in the Arctic climate. She also hunted, and managed the group’s Inuit employees.

Josephine Peary was more than just the woman behind the man. An Arctic explorer in her own right, she spent three winters and eight summers on the harsh and unforgiving frontier. Back at home, her Arctic accounts painted a picture of a frozen and far-off world that most could only wonder about. Jo’s writing career brought in expedition money for her husband, which sometimes turned into bailout money.

Josephine Peary, DC debutante. Image via Bowdoin College

Woman About Washington

Josephine Cecilia Diebitsch was born May 22nd, 1863 to German immigrant parents who encouraged her to explore the world. Her father, Hermann, was a linguist at the Smithsonian Institute. Because of his position, the Diebitsch family rubbed elbows with much of high society. Though Jo was raised to be a Victorian lady and upheld those values, she had progressive ideas about what women could do with themselves in addition to being wives and mothers.
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Peep These Ultra-Real 3D-Printed Eyeballs

For humans, life is in the eyes. Same deal with automatons. The more realistic the eyes, the more lifelike (and potentially disturbing) the automaton is. [lkkalebob] knows this. [lkkalebob] is so dedicated to ocular realism in his ultra-real eyeballs that he’s perfected a way to make the minuscule veins from a whisper of cotton thread.

First he prints an eyeball blank out of ABS. Why ABS, you ask? It has a semi-translucence that makes it look that much more real. Also, it’s easier to sand than PLA. After vigorous sanding, it’s time to paint the iris and the apply the veins. [lkkalebob] shaves strands of lint from red cotton thread and applies it with tweezers to smears of super glue.

Here comes our favorite part. To make the whole process easier, [lkkalebob] designed a jig system that takes the eyeballs all the way through the stages of fabrication and into the sockets of the automaton. The hollow eye cups pressure fit on to prongs that hold it in place. This also gives the eyeball a shaft that can be chucked into a drill for easy airbrushing. In the build video after the break, he uses the eye-jig to cast a silicone mold, which he then uses to seal the eyes in resin.

Don’t have a printer or any desire to make human automata? It doesn’t take much to make mesmerizing mechanisms.

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Electricity Makes Soft Robotics More Like Us Meatbags

Building a future where robots work alongside humans relies heavily on soft robotics. Typically this means there will be an air compressor or a hydraulic system nearby, taking up precious space. But it doesn’t have to.

Engineers at the UC-San Diego Jacobs School have created a soft robotics system that uses electricity to control flexible actuators, much like our brains move our muscles. It works like this: sheets of heat-sensitive liquid crystal elastomer are sandwiched between two layers of standard elastomer. These layers are rolled into cylinders that can twist and bend in different directions depending on which of its six element(s) get electricity. Light up all six, and the tube contracts, forming the foundation for a good gripper. The team also built a tiny walker, pictured above.

The project is still in its infancy, so the actuators are slow to bend and even slower to return to their original shape, but it’s still a great start. Imagine all the soft robotic projects that can get off the ground without being shackled by the bulk and weight of an air compressor or fluid handling system. Watch it do various sped-up things after the break, like claw-machine gripping a bottle of chocolate rocks.

Speaking of delicious candy, edible soft robotics is totally a thing.

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