I’ve been playing with origami, lately. Specifically, I’ve been exploring how to simulate, model, and fold origami shapes in ways that could be automated to create useful mechanisms. The system I’ve come up with is designed to fold rip-stop nylon, which I’ve worked with a bit during my time at Makani Power and research at Super-Releaser.
After some experiments with programs designed specifically for generating origami patterns, I found I wasn’t able replicate the patterns I’d prototyped in paper. Since I wanted to start out with a paper prototype, do some bench tests, and move to CAD from there, I needed to consider other options. I also wasn’t able to convert the output into a format that would play with CAD for printing and prototyping the resulting forms. So, I fell back on my old standard: SolidWorks. If you’ve worked with me before or you’re a regular reader, you don’t get any bonus points for guessing I’d find a way to turn this into a SolidWorks project. This video was very helpful for understanding how to think about origami in a SW context.
After testing the Flat-Pack Camera Arm I built, I was pretty happy with the results. Happy, except for one detail: the joint at the base of the arm would creep down over time. This wasn’t a problem while taking shots of projects at the bench, given how often I’d have to reposition it anywhere. The big breakdown was trying to capture time lapses. The creep was just too noticeable, and it would never stay in place long enough to keep the action of a day’s hacking in frame.
So, I set out to make some locking plates for the arm, and I think people could find some interesting uses for the process I came up with. The broad strokes of the method are that you design the part you’d like at the end in CAD, design a floor under your part with walls around it (I call this a bathtub), print the bathtub mold you designed, cast the mold using 2-part silicone (making sure it’s nice and level), and cast your final material into that mold. Once you’ve got the knack of replicating parts using 1-part molds, you can get fancier: adding vent holes for letting air escape or labels for your parts or building multiple parts for your molds for even more precise geometry.
Below you can find more information on the whole project:
I’ve been wanting an extra set of hands to hold a camera while I document projects for a long time. Kari and I are writing a book for MAKE all about soft robotics, and I figure there’s probably not going to be a better time to have a serious documentation setup than when someone’s paying me to do a good job at it. Since NYC Resistor just got a ShopBot and I’ve been meaning to get back into plywood fab for years, it seemed like a pretty auspicious syzygy. If you’d like to replicate this design for yourself, you can find the source files and project notes here. You can also see my photos from the cutting and assembly of the project here. Continue reading →
Years ago, I designed a series of Tardis and Dalek rings as an experiment in SolidWorks modeling. I wanted to have a ring design that would support a sculptural element with a shank that would change proportionally to feel natural in a wide variety of ring sizes. I was also way into Dr. Who at the time. Continue reading →
A few months back I reprised my role as robotics mercenary and general fixer, spending a week working on David Nunez’s Requiem for Rhinos installation at Illuminus Boston. David is a researcher with Todd Machover’s Opera of the Future group at the MIT Media Lab. The idea at the core of the sculpture is the passing of Nabire, one of the last northern white rhinos in existence. Only four remain and they are so closely related that rekindling the species is impossible. The sculpture was conceived as a grand send-off, with Nabire’s kin descending from the ceiling to wish her on her way.
Over the past six months Kari Love and I have been developing a soft robotic elbow orthotic for Cerebral Palsy therapy. It’s still in the early stages of prototyping and testing, but it’s making rapid progress. If all goes as planned, it should be in the hands of a team of CP doctors specializing in robotic orthotics in the near future.
The Neucuff is an extension of the soft robotics development I’ve been doing for the past three years as lead scientist at Super-Releaser. After creating manufacturing techniques for a few different flavors of soft robot, I felt it was time to find some practical applications for the technology.
I approached a ton of people about where soft robotics could be best applied. I talked with civil engineers about exploratory robots for mapping pipes in construction sites. I talked with NASA scientists about soft robots in space. The most promising ideas came from my father, an orthopedic surgeon specializing in arthroscopy and shoulder reconstruction, and my robotics mentor, who has spent the last ten years in the medical device field.
They both described problems with therapeutic robots that a soft robotics approach could solve. Soft robots are good at spreading force evenly across a large area. Soft robots are conformal so they can fit a wide variety of applications and environments by design. This makes them an ideal candidate for Cerebral Palsy therapy.
You can find out more detail along with downloads, video, and schematics here.
The Glaucus is a soft robotic quadruped composed of a single seamless silicone part. It has a complex network of interior channels, created via a lost wax process, that turn into actuators when pressurized with air. It’s able to walk with a diagonal gait, similar to a gecko or Glaucus Atlanticus sea slug, using only two input channels.
The Glaucus was created to demonstrate a method for fabricating soft robots of nearly any geometry with arbitrary interior structures. It’s been my goal, since beginning my research into soft robotics, to simplify the process of prototyping and refining designs. Often the barrier between an interesting bench prototype and practical application is how it scales into production. If methods for experimenting with the core concepts, evaluating them in a context that represents their final manufactured state, and refining them for mass production don’t exist, the idea is very likely to languish on the bench. Continue reading →
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.
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 →
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.