Flat Earth Theatre presents "R.U.R." by Karel Capek. January 23 - 31, 2009. Featuring Michael Wayne Smith, Karen Hart, Valerie Daum, Jeff Tidwell, Kevin Kordis, James Rossi, Bill Conley, Justus Perry, and Amy Lehrmitt. Directed by Jake Scaltreto. Arsenal Center for the Arts, Watertown.

Robot: You Keep Using That Word But It Doesn’t Mean What You Think It Means

The flute player automaton by Innocenzo Manzetti (1840)
The flute player automaton by Innocenzo Manzetti (1840)

With many words which are commonly used in everyday vocabulary, we are certain that we have a solid grasp of what they do and do not mean, but is this really true? Take the word ‘robot’ for example, which is more commonly used wrongly rather than correctly when going by the definition of the person who coined it: [Karel Čapek]. It was the year 1920 when his play Rossumovi Univerzální Roboti was introduced to the world, which soon saw itself translated and performed around the world, with the English-speaking world knowing it as R.U.R.: Rossum’s Universal Robots.

Up till then, the concept of a relatively self-operating machine was known as an automaton, as introduced by the Ancient Greeks, with the term ‘android’ being introduced as early as the 18th century to mean automatons that have a human-like appearance, but are still mechanical contraptions. When [Čapek] wrote his play, he did not intend to have non-human characters that were like these androids, but rather pure artificial life: biochemical systems much like humans, using similar biochemical principles as proteins, enzymes, hormones and vitamins, assembled from organic matter like humans. These non-human characters he called ‘roboti’, from Old Czech ‘robot’ (robota: “drudgery, servitude”), who looked human, but lacked a ‘soul’.

Despite this intent, the run-away success of R.U.R. led to anything android- and automaton-like being referred to as a ‘robot’, which he lamented in a 1935 column in Lidové Noviny. Rather than whirring and clunking pieces of machinery being called ‘automatons’ and ‘androids’ as they had been for hundreds of years, now his vision of artificial life had effectively been wiped out. Despite this, to this day we can still see the traces of the proper terms, for example when we talk about ‘automation’, which is where automatons (‘industrial robots’) come into play, like the industrial looms and kin that heralded the Industrial Revolution.

(Heading image: Performance of R.U.R. by Flat Earth Theatre, showing the mixing of robot ingredients)

Hackaday Podcast Episode 253: More Wood Robot, Glitching And Fuming Nitric Acid, We Heart USB-C

This week Hackaday Editors Elliot Williams and Tom Nardi start things off with a traffic report from the Moon, which has suddenly become a popular destination for wayward robots.

Anonymizing an ATtiny85 via laser

From there, they’ll go over a fire-tending contraption that’s equal parts madness and brilliance, two decades of routers being liberated by OpenWRT, impressive feats of chip decapping, and USB-C’s glorious rise to power.

You’ll also hear about the latest developments in laptop RAM, exploits against the flash encryption used on the ESP32, and Android powered oscilloscopes. The duo will wrap things up with horror stories from the self-checkout aisle, and a look at the fantastical rolling power station that Dan Maloney has been building in his driveway.

Check out the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

Oh look, an MP3 version!

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Weird Trashcan Is Actually Advanced 1990s Robot

[Clay Builds] found a bit of a gem at a recent auction, picking up a Nomadic Technologies N150 robot for just $100. It actually looks like something out of science fiction, with its cylindrical design, red bumpers, and many sensors. He decided to try and restore the research-grade robot to functionality with the aid of modern hardware.

Right away, it’s clear this was an expensive and serious bit of kit. It’s full of hardcore gears and motors for driving three rubber-tired wheels, each of which has a pivoting mount for steering the thing. Through his research, [Clay] was able to find some ancient websites documenting university work using the robots. His understanding is that the platform was designed for researchers experimenting with simultaneous localization and mapping (SLAM) algorithms, and other robotic navigation tasks.

[Clay] doesn’t just settle for a teardown, though. He’s been able to get the platform running again in one sense, using an Arduino to manually run the robot’s drive controls under the command of a gamepad. Without official software or resources, it’s perhaps unlikely he’ll be able to get the stock hardware to do much without completely rebraining it, so this method makes sense. In future he hopes to get the bumper sensors and sonar modules working too.

It’s a fair effort given [Clay] was working with no documentation and no supporting software. We’ve seen similar efforts for robotic arms before, too. Video after the break.

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a) Schematic illustration of energy storage process of succulent plants by harnessing solar energy with a solar cell, and the solar cell converts the energy into electricity that can be store in APCSCs of succulent plants, and then utilized by multiple electrical appliances. b–d) The energy is stored in cactus under sunlight by solar cell and then power light strips of Christmas tree for decoration.

Succulents Into Supercapacitors

Researchers in Beijing have discovered a way to turn succulents into supercapacitors to help store energy. While previous research has found ways to store energy in plants, it often required implants or other modifications to the plant itself to function. These foreign components might be rejected by the plant or hamper its natural functions leading to its premature death.

This new method takes an aloe leaf, freeze dries it, heats it up, then uses the resulting components as an implant back into the aloe plant. Since it’s all aloe all the time, the plant stays happy (or at least alive) and becomes an electrolytic supercapacitor.

Using the natural electrolytes of the aloe juice, the supercapacitor can then be charged and discharged as needed. The researchers tested the concept by solar charging the capacitor and then using that to run LED lights.

This certainly proposes some interesting applications, although we think your HOA might not be a fan. We also wonder if there might be a way to use the photosynthetic process more directly to charge the plant? Maybe this could recharge a tiny robot that lands on the plants?

An RC Tank Chassis That’s Not Messing About

It’s not uncommon to see a tracked robot build on these pages, but it’s fair to say that many of them are somewhat on the small side. That was where [iforce2d] started, but the idea of making a more capable version just wouldn’t go away. Thus, he’s come back and made what looks to be a very promising, fully capable outdoor RC tank chassis, one that, within reason, we think should eventually be able to go anywhere.

For plenty of power, he’s using a pair of hoverboard motors with a chain reduction drive and in turn, a couple of shafts to the tracks. The chassis is a TIG-welded aluminium affair, while the tracks are an early incarnation with machined MDF drive wheels and a homemade tread. The suspension is a work of machined-aluminium art, though, and while there are teething troubles as he takes it for a spin, we can see plenty of potential as its deficiencies are ironed out.  Take a look at it in the video below the break.

If large-size R/C tanks are your thing, we have another for you to look at.

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Infrared Following Robot Built As Proof-of-Concept For Autonomous Luggage

Once upon a time, the poor humans of the past had to lug around suitcases and trunks with their own arms. Then, some genius figured out that you could just put wheels on and make everyone’s life a million times easier. Now, what if you didn’t even have push, because your luggage could just follow you instead? Well, students [Yuqiang Ge] and [Yiyang Zhao] have figured out a proof of concept for how that could work.

Their build is a small robotic platform that they assembled for their ECE5730 final project. The tiny wheeled robot is programmed to rotate on the spot until its infrared sensors pick up a signal. In turn, the user is intended to carry an infared beacon for it to lock onto. A pair of sensors are used on the robot platform, separated by a board to serve as a blind. The robot determines the relative signal strength from each sensor, and uses that to vary PWM signals to the two DC drive motors to steer the robot platform to seek and follow the infrared beacon.

It’s a neat idea, and looks to work pretty well in a university corridor. It even has an ultrasonic range sensor to (ideally) stop when it gets too close to the user. Whether it would survive the tumult of a crowded airport is another thing entirely, but that’s what the engineering process is about. Indeed, the very concept has been commercialized already!

Following-robots are a common student project, and one well worth exploring if you’re new to the robotic field.

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Robotic Rose Of Enchantment Drops Petals On Command

In Disney’s 1991 film Beauty and the Beast, an enchantress curses the young (10 or 11-year-old) prince to beast-hood for spurning her based solely on her appearance. She gives him a special rose that she says will bloom until his 21st birthday, at which time he’ll be turned back into a prince, provided that he learned to love by then. If not, he’ll be a beast for eternity. As the years go by, the rose drops the occasional petal and begins to wilt under the bell jar where he keeps it.

[Gord Payne] was tasked with building such a rose of enchantment for a high school production and knocked it out of the park. With no budget provided, [Gord] used what he had lying about the house, like nylon trimmer line. In fact, that’s probably the most important part of this build. A piece of trimmer line runs up through the stem made of tubing and out the silk rose head, which connects with a custom 3-D printed part.

Each loose petal hangs from the tubing using a short length of wire. Down at the base, the trimmer line is attached to a servo horn, which is connected to an Adafruit Circuit Playground. When the button is pressed on the remote, the servo retracts the trimmer line a little bit, dropping a petal. Be sure to check out the demo after the break.

Dropping petals is an interesting problem to solve. Most of the flower hacks we see around here involve blooming, which presents its own set of troubles.

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