Disney’s Humanoid Stunt Robots Throw Multiple Backflips No Sweat

What’s the biggest problem right now with humanoid robots? They fall down. Disney seems to have solved that problem here by making robots that are meant to fall down and be caught by a net. Disney’s research arm (you may know them as Imagineers) is showing off a robot called Stuntronic which can perform controlled somersaults as it flies through the air. Check the video below, you really have to watch a few times to make sure this is a robot and not a person.

It’s really interesting to follow the evolution of this robot. It began with BRICK, a limbless rectangular bot that could shift its center of gravity to control orientation while moving through the air. From there, Stickman adapted those concepts into a stick-shaped robot that had two hinged portions which allowed for controlled somersaults as it flew through the air. Stuntronic feels like a big leap from that design.

As with Stickman, it can bend to control somersaults mid-air, but with the addition of articulated arms, Stuntronic can also add twists to the acrobatic bag of tricks. To our eye, this is very lifelike and manages to completely escape the uncanny valley. This is a ringing endorsement since one of the proposed purposes of this research is for live performances at Disney’s theme parks.

The Hall of Presidents was a marvel of its time, as robots presented famous speeches while decorated in the likeness of the leaders who originally delivered them. But to stand and deliver is a trick of decades past. We hope this is a trick of next year and not something we’ll have to wake decades into the future to see in person.

Oh, and for those wondering if Stuntronic stuck the landing? The controlled delivery into the net’s warm embrace is equally impressive. Hopefully, successful landings are commonplace because they’re launching these bots with some really wicked force! In addition to the gyroscopes and accelerometers you’d expect to find in a motion-aware machine, the design uses a trio of laser rangefinders that triangulate ground position to spot the optimal landing. We haven’t seen a publication for this bot yet but check the Stickman info for more on these sensors.

Continue reading “Disney’s Humanoid Stunt Robots Throw Multiple Backflips No Sweat”

Hackaday Journal Completes First Review Process, Seeks More Submissions

Congratulations and thank you go to Theodore Yapo for authoring the first paper to complete the peer review process for the Hackaday Journal. You can read the standalone paper here; it will be included in the first volume of the Hackaday Journal officially released later this year.

The Hackaday Journal is an open access, peer reviewed journal that seeks to ensure hard-won domain knowledge is preserved and made available for the benefit of all. Before jumping into Ted’s topic, please take a moment to consider submitting your own paper for the journal.

Paper Submissions Wanted

We have other submissions in the pipleline now but we still need more papers to round out the first volume of the Hackaday Journal. Please consider authoring a paper on any creative research, engineering, or entertaining discovery in the areas of interest to the Hackaday community. The full name of our journal is the Hackaday Journal of What You Don’t Know — it will be a tome of infinite appeal to any who seek to broaden their minds in the engineering space. But for that to happen we need you to share your knowledge.

We are in an age of unparalleled opportunity for individuals and small teams to make interesting discovery. You should not need to be working on a degree to have your findings published, but of course students and faculty are encouraged to submit their papers. Do not hesitate to get in touch with us about topics you want to write about.

Scalar Network Analyzer Leakage Correction by Theodore Yapo

Low-pass filter being tested by a Rigol DSA-815 using the phase shifting correction technique

The title of Ted’s paper is a mouthful and the subject material wades into radio frequency knowledge with gusto. We applaud him, and the peer reviewers, for the attention to detail while moving toward publication.

In his work, Ted finds an interesting opportunity to get more performance out of relatively inexpensive bench equipment used to characterize RF components. This task is often reserved for Vector Network Analyzers (VNA) but with a heafty price tag these tools aren’t available to everyone. Spectrum Analyzers with Tracking Generators (SA/TG) have come onto the market, but especially with early versions, there is a leakage problem that causes inaccuracy. Ted found a simple technique that can correct for the leakage.

The solution is based on phase shifting the measurement. Starting with a properly calibrated machine, Ted uses a small board he built to electronically shift the phase of the Tracking Generator where the leakage is a problem. The signal is first measured, then measured again with a phase shift of 180 degrees. This effectively cancels out the error while preserving the signal being measured.

This paper goes into great technical detail in the RF domain. It is worth noting that the Hackaday Journal is open to discovery on multiple topics and levels of complexity. Don’t let what you think is a simple, useful idea go unpublished. We’re interested in a wide range of the simple, the obscure, and the frighteningly technical as long as the ideas of both novel and well supported.

This is Your Journal

You, yes you reading this right now, embody a movement of inventive and curious people working both inside and outside of formal academic structures. This is our time to contribute to the knowledge base of humanity. Pour yourself a refreshing beverage, saddle up your headphones, crack those knuckles, and let the writing process begin. Let us now what we don’t know. Submit your paper now.

Video Quick-Bit: The Things That Move Robots

Magenta Strongheart returns for a look at some of the coolest robotic entries from this year’s Hackaday Prize. Each of these answered the challenge for modular designs that will help supercharge new robot projects.

We think that cheap and abundant motor designs are poised to revolutionize robotics and several of the entries thought along those same lines. [Masahiro Mizuno] came up with a great 3D printed servo design based around a 6mm DC motor. Also in this ballpark, a team of two — Giovanni Leal and Jonathan Diaz — used 3D printing to turn some tiny metallic servos into linear actuators.

Picking stuff up is a difficult thing for a machine to do. We’ve long enjoyed seeing jamming grippers which do it with an inflatable bladder around a granular material (watch the video… it’s amazing). Two of these were demonstrated as part of the challenge. The Universal Jamming Gripper focuses on the entire mechanism, while Programmable Air took aim at the pneumatic actuation system and can adapt to other soft-robotics uses.

Rounding out this update, make sure to take a peek at the PCB stepper motor [Bobricius] built after being inspired by [Carl Bugeja’s] PCB motor. You’ll also want to see the entry that is taking on industrial farming. Imaging slow-rolling behemoths that use computer vision and spinning tillers to take care of weeds, cutting down on herbicide use.

Right now we’re in the thick of the Power Harvesting Challenge. Show us how you’re getting power from an interesting source and you’ll be on the way to the finals. Twenty power harvesting entries will get that honor, along with a $1,000 cash prize. The five top entries of the 2018 Hackaday Prize will split $100,000!

Rachel Wong Keynote: Growing Eyeballs In The Lab And Building Wearables That Enhance Experience

The keynote speaker at the Hackaday Belgrade conference was Rachel “Konichiwakitty” Wong presenting Jack of All Trades, Master of One. Her story is one that will be very familiar to anyone in the Hackaday community. A high achiever in her field of study, Rachel has learned the joy of limiting how much energy she allows herself to expend on work, rounding out her life with recreation in other fascinating areas.

There are two things Rachel is really passionate about in life. In her professional life she is working on her PhD as a stem cell researcher studying blindness and trying to understand the causes of genetic blindness. In her personal life she is exploring wearable technology in a way that makes sense to her and breaks out of what is often seen in practice these days.

Continue reading “Rachel Wong Keynote: Growing Eyeballs In The Lab And Building Wearables That Enhance Experience”

Scotty Allen’s PCB Fab Tour Is Like Willy Wonka’s For Hardware Geeks

The availability of low-cost, insanely high-quality PCBs has really changed how we do electronics. Here at Hackaday we see people ditching home fabrication with increasing frequency, and going to small-run fab for their prototypes and projects. Today you can get a look at the types of factory processes that make that possible. [Scotty Allen] just published a (sponsored) tour of a PCB fab house that shows off the incredible machine tools and chemical baths that are never pondered by the world’s electronics consumers. If you have an appreciation PCBs, it’s a joy to follow a design through the process so take your coffee break and let this video roll.

Several parts of this will be very familiar. The photo-resist and etching process for 2-layer boards is more or less the same as it would be in your own workshop. Of course the panels are much larger than you’d ever try at home, and they’re not using a food storage container and homemade etchant. In fact the processes are by and large automated which makes sense considering the volume a factory like this is churning through. Even moving stacks of boards around the factory is show with automated trolleys.

Six headed PCB drilling machine (four heads in use here).

What we find most interesting about this tour is the multi-layer board process, the drilling machines, and the solder mask application. For boards that use more than two layers, the designs are built from the inside out, adding substrate and copper foil layers as they go. It’s neat to watch but we’re still left wondering how the inner layers are aligned with the outer. If you have insight on this please sound off in the comments below.

The drilling process isn’t so much a surprise as it is a marvel to see huge machines with six drill heads working on multiple boards at one time. It sure beats a Dremel drill press. The solder mask process is one that we don’t often see shown off. The ink for the mask is applied to the entire board and baked just to make it tacky. A photo process is then utilized which works much in the same way photoresist works for copper etching. Transparent film with patterns printed on it cures the solder mask that should stay, while the rest is washed away in the next step.

Boards continue through the process to get silk screen, surface treatment, and routing to separate individual boards from panels. Electrical testing is performed and the candy making PCB fab process is complete. From start to finish, seeing the consistency and speed of each step is very satisfying.

Looking to do a big run of boards? You may find [Brian Benchoff’s] panelization guide of interest.

Continue reading “Scotty Allen’s PCB Fab Tour Is Like Willy Wonka’s For Hardware Geeks”

Joe Grand Is Hiding Data In Plain Sight: LEDs That Look Solid But Send A Message

Thursday night was a real treat. I got to see both Joe Grand and Kitty Yeung at the HDDG meetup, each speaking about their recent work.

Joe walked us through the OpticSpy, his newest hardware product that had its genesis in some of the earliest days of data leakage. Remember those lights on old modems that would blink when data is being transmitted or received? The easiest way to design this circuit is to tie the status LEDs directly to the RX and TX lines of a serial port, but it turns out that’s broadcasting your data out to anyone with a camera. You can’t see the light blinking so fast with your eyes of course, but with the right gear you most certainly could read out the ones and zeros. Joe built an homage to that time using a BPW21R photodiode.

Transmitting data over light is something that television manufacturers have been doing for decades, too. How do they work in a room full of light sources? They filter for the carrier signal (usually 38 kHz). But what if you’re interested in finding an arbitrary signal? Joe’s bag of tricks does it without the carrier and across a large spectrum. It feels a bit like magic, but even if you know how it works, his explanation of the hardware is worth a watch!

Continue reading “Joe Grand Is Hiding Data In Plain Sight: LEDs That Look Solid But Send A Message”

Power Harvesting Challenge: Scavenge Some Power, Win Prizes

It’s a brand new day as the Power Harvesting Challenge begins. This is the newest part of the 2018 Hackaday Prize and we’re looking for 20 entries who will each receive $1,000 and move onto the finals to compete for the top five spots, scoring cash prizes of $50k, $25k, $15k, $10k, and $5k.

Put simply, Power Harvesting is anything you can do that will pull some of the energy you need from a source other than wall-power or traditional battery tech. The most obvious power harvesting technologies are solar and wind. Ditch the battery in your doorbell for a solar panel, or turn your time-lapse camera rig into one that tops its battery with a tiny wind turbine. On the other end of the spectrum you could go nuts with chemistry and develop your own take on harvesting power from saltwater, or sip off the ambient RF waves all around us.

Every Idea Matters

We live in an amazing time as chip manufacturers have squeezed every low power trick out of their silicon dies that they possibly can. The Power Harvesting Challenge is the complement to those achievements: can we now squeeze as much energy out of non-traditional sources as possible to further reduce our energy footprints?

Continue reading “Power Harvesting Challenge: Scavenge Some Power, Win Prizes”