Fridge Clip

I have an uneasy relationship with my miniature refrigerator. This chilly bastard decided to get clever and fall open over the weekend. I stepped in to the lab to find it iced up and dripping all over the floor. It was running so hard the housing climbed up to something like 90 degrees. Now, maybe I didn’t shut it properly over the weekend, but I’ve seen this fridge swing open when a gnat coughed. It was time for a change.

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Defrosting all over my floor. The trash can is there for dumping the icy slush once the drip tray filled up.

I designed a clip to solve this problem. I modeled it in a half hour and it took my Ultimaker a bit more than two to print it. I’m very happy with how it turned out. This clip has an integrated spring and a central rib to optimize the stiffness without adding tons of thickness (i.e. more print time). It attaches to the fridge body with three rivets. For the rivet holes I wrapped my drill in some electrical tape to make sure it didn’t plunge too far into the insulation and damage anything. It was installed in a snap and hopefully will prove a permanent solution to an annoying problem. Continue reading

SOLS Adaptiv – A Wearable Soft Robot

I was hired by SOLS to help out with their Adaptiv project. The idea was to showcase the procedural modeling techniques, materials, and technologies behind their printed insoles with a futuristic robotic shoe. Jordan Dialto, the industrial design lead at SOLS, approached me in my capacity as lead scientist at Super-Releaser to make a prototype soft robot shoe that could change shape and fit in response to the wearer.

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The external shell (purple) retaining skeleton (grey) and soft actuators (teal) joined together with reference pins to be inserted into the original mesh.

The project started out with an external shell modeled by Continuum Fashion. Although the design was elegant, this posed a challenge for introducing the robotic elements and the engineered components that would stitch everything together. Since the external shell was generated in a mesh CAD program, it didn’t fit into SolidWorks’ reference frame. This meant using the mesh as a reference and generating a simplified surface to extrude the soft robot elements and retaining skeleton from. Continue reading

Glowy Crystal Ring

Do you like 3D printing, mold making, industrial design, jewelry, and RGB LED’s? You’re in luck, then. I just finished this tutorial for Adafruit and think it’s well worth a look.

In this project, I attempted to make an Arduino powered device that was easy to use, easy to make, and self contained. Every 3d printed component can be done in a single build without support material. The ring has a battery, switch, and USB port. Once it’s together, all you need to charge or reprogram it is a USB Micro cable.

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Soft Robotics Talks at NYCResistor

I’m trying to get more people playing with soft robots. I’m releasing open source design files, tutorials, and now teaching classes. They’re a useful tool to add to any roboticist’s engineering toolbox, and if they were more widely known I think we’d see them outside the research lab and applied to practical problems.

I’ve taught a couple of seminars on soft robotics (demonstrating how I fabricate the Glaucus) over the last few weeks. I’m also giving a few talks soon – one at a seminar for engineering simulations, and another at NYC’s Spaceapps Hackathon.

You can find more information on the last few classes on the Soft Robotics Technology Meetup page, the ACM-NYC Meetup page, and NYCResistor’s blog. I’ve embedded video of the ACM talk below.

 

Title photo by David Rey. You can find more of his photos of this event at the NYC Soft Robotics Technology Group Meetup here.

“Hard Problems? Soft Robots!” at BsidesHH 2014

I’ve been going to CCC for a while. I’ve given some talks (mostly on the lightning talk track) and have generally had a good time. More and more, though, I’ve gotten interested in gatherings that orbit big events like CCC, Maker Faire, and HOPE. Unconferences, Bsides, and nether-conferences like BarCamp are less formal than a traditional conference, and often have the kind of wiggle room for instant breakout sessions and long Q&A.

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Print Your Own Robot: Part 10

Long time no see, folks. I’ve got some great news for you. I’ve finally found a method for getting super complicated geometry locked inside of a seamless skin. It’s taken a lot of prototypes to get here, but I think the results are more than worth the effort. There are some wrinkles to iron out (which I’ll get to below) but all in all I think I’m incredibly close to rapid-fire casting working quadrupeds, ready to go in just a few short steps after popping the mold. In other good news, I’ll be dropping some files very soon which should get you your very own working quadruped using any FDM printer. All you need is a Makerbot or similar, a few hours, and some casting materials to have an exact duplicate of my most sophisticated robot to date.

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Narwhal BBQ Skewers

Over the past few months I’ve been working with Melissa Dowell to make these lovely Narwhal Skewers and now (after a good deal of prototyping, experimentation, poking, and prodding) they’re finally out. The process that went into these is actually kind of fascinating first because of how difficult it was to hone in on the right way to design these in CAD and secondly because of how many different directions we explored before finally landing on the final design.

Left to right: The earliest narwhal sculpt by Melissa, the first printed prototype, and a revised prototype.

The whole project started with some sketches from Melissa. From there we chatted about ideas, industrial design considerations, and manufacturing constraints. I felt that it would be reasonable to fasten a twisted rod into a cast metal handle and we could core out the handle to provide both the fastenings for the rod and minimize weight and material.

Melissa sculpted an oversize polymer clay narwhal that we finessed and modified until it had the desired gesture and proportions. From there, we took it to Numidas Prasarn to get the thing scanned and digitized. Continue reading

Print Your Own Robot: Part 9

My latest quadruped design

This will be an update on the things I’ve learned molding quadrupeds over the last couple of months and some previews of the new robots I’ll be experimenting with in the next few weeks. To start, I’ve had the chance to run a gaggle of design experiments ranging from small changes to the particular silicone I’ve been casting, to more radical changes to how the whole plionics manufacturing process comes together.

I’ve discovered that molding complex channels of tubing can be extremely difficult, and the CAD equally infuriating. I’m discovering some automatic routing tools in SolidWorks that could streamline the process, but there might be another solution that sidesteps that whole mess entirely. It’s possible to cast around silicone tubing that’s already connecting up all the interior geometry. So, what I’d have to do to get the design working is build the cores with little fastenings for plugging in tubing and make sure all the tubes have enough clearance to get past one another. I’m anticipating the world of reality doesn’t let me off the hook that easily, but it’s a start. Continue reading

First to Blog

This is a response, more of a high five, to Zach Hoeken’s post up on MAKE: “First to File? Nah, First to Blog!” Basically his post was a series of ideas that have been hanging around in his notebooks, possibly eligible for patents, that he would rather see out there and made in the world than locked away between the pages of a personal sketchpad forever or exploited to the chagrin of mankind by some unruly technological entity, wrapped up in complex patent labyrinths, and never put to a more just use than in sole product from a sole company (see 3d Systems vs the Form 1, Patent Busting3d printing patent challenges, etc). Even worse is the possibility of an idea getting patented and never implemented, only used as a club to hit innovators over the wallet (see Intellectual Ventures). I’m in favor of this. Truth be told I’m pretty aggressively anti patent, which is why all of my recent robotics projects have been released into the open source. Although I realize there’s a difficult road ahead, finding ways to keep funding innovation and novel IP in the world patent abolitionists have been gunning for, I believe open access to information and the network effects it generates far far and away outweigh the small innovation boost you get from researchers confident they’ll be the only people able to profit from the particular idea they’re developing. Continue reading