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Tiberius Brastaviceanu

Piezo controller - Picasa Web Albums - 1 views

picasaweb.google.com/...PiezoController

electronics Jonathan Dilson piezo xyzpiezo_project

shared by Tiberius Brastaviceanu on 16 Jul 12 - No Cached
  • Tiberius Brastaviceanu on 16 Jul 12
     
    Jonathan piezo controller
Tiberius Brastaviceanu

BeagleBoard.org - 2014-01-29-project-spotlight-beedome - 0 views

beagleboard.org/...1-29-project-spotlight-beedome

intelligent_beehives beehive

shared by Tiberius Brastaviceanu on 03 Feb 14 - No Cached
  • Tiberius Brastaviceanu on 03 Feb 14
     
    "The BeeDome is a computerized system based on the Sitara-processor-powered BeagleBone Black computer as well as a specially designed "cape" plug-in board. BeagleBone Black is connected to the Internet, and stats are uploaded periodically to a website so that the company can closely monitor the nucs. The BeeDome also integrates GE Telaire T6613/T6615 and MG811 sensors to monitor the CO2 level; DS18B20 sensors to monitor temperature; DH22 sensors to monitor humidity and temperature; and Sharp COM-10636 SSR devices to control 120V devices. "Bee" sure to check out ForestDew Apiaries' website for more information on this "unbeelievable" project!"
Kurt Laitner

The Energy Efficiency of Trust & Vulnerability: A Conversation | Switch and Shift - 0 views

switchandshift.com/t-vulnerability-a-conversation

*trust discussion contextual

shared by Kurt Laitner on 30 Jan 14 - No Cached
  • trusting people because of who they are personally vs. who they are professionally
  • also need to trust systems
  • our own resources
  • ...34 more annotations...
  • How much we need to trust others depends on the context,
  • how much we trust ourselves,
  • our ability to understand the context we are in
  • When we trust, we re-allocate that energy and time to getting things done and making an impact
  • the more information and/or experience we have, the better we can decide whether or not to trust
  • Trust is a tool to assess and manage (reduce and/or increase) risk, depending on the situation.
  • Trusting someone implies making oneself more vulnerable
  • When we don’t trust, we exert a lot of energy to keep up our guard, to continually assess and verify.  This uses a lot of energy and time.
  • If the alternative is worse, we might opt for no trust
  • As we let ourselves be vulnerable, we also leave ourselves more open to new ideas, new ways of thinking which leads to empathy and innovation.
  • the more we can focus on the scope and achievement of our goals
  • trusting is efficient….and effective
  • Being vulnerable is a way to preserve energy
  • It lets us reallocate our resources to what matters and utilize our skills and those around us to increase effectiveness…impact.
  • If we are working together, we need to agree on the meaning of ‘done’.  When are we done, what does that look like?
  • “Control is for Beginners”
  • Strategic sloppiness is a way to preserve energy
  • Build on the same shared mental models
  • use the same language
  • As the ability to replicate something has become more of a commodity, we are increasingly seeing that complex interactions are the way to create ‘value from difference’ (as opposed to ‘value from sameness’).
  • allow for larger margins of error in our response and our acceptance of others
  • higher perfection slows down the tempo
  • We can’t minimize the need to be effective.
  • Efficient systems are great at dealing with complicated things – things that have many parts and sequences, but they fall flat dealing with complex systems, which is most of world today.
  • make sure we hear and see the same thing (reduce buffers around our response)
  • timing
  • intuition
  • judgment
  • experience
  • ability to look at things from many different perspective
  • to discover, uncover, understand and empathize is critical
  • focus on meaning and purpose for work (outcomes) instead of just money and profit (outputs)
  • When we have a common goal of WHY we want to do something, we are better able to trust
  • When we never do the same thing or have the same conversation twice, it becomes much more important to figure out why and what we do than how we do it (process, which is a given)
  • Kurt Laitner on 30 Jan 14
     
    spot on conversation on *trust, I see creating a trustful environment quickly among strangers as a key capability of an OVN, we need to quickly get past the need to protect and verify and move on to making purpose and goals happen
Kurt Laitner

NINJA SPHERE: Next Generation Control of Your Environment by Ninja Blocks - Kickstarter - 0 views

www.kickstarter.com/...neration-control-of-your-envir

home automation appliance LBS indoor positioning systems

shared by Kurt Laitner on 22 Nov 13 - No Cached
  • Kurt Laitner on 22 Nov 13
     
    interesting take on a sensor network
Francois Bergeron

Automatic Micro Manipulation System for Cell Manipulation - 1 views

www.aml.t.u-tokyo.ac.jp/...manipulator_e.html

automatic micro manipulation system cell

shared by Francois Bergeron on 19 Nov 12 - No Cached
Luciano Silva liked it
  • Here, we applied piezo impact drive mechanism, which utilizes rapid deformation of piezoelectric element, to realize smooth insertion of the micro pipette into the cytoplasm without deformation. This mechanism had already been commercialized and being used in many institutes.
  • Francois Bergeron on 19 Nov 12
     
    that may be nice to add force feedback control
Tiberius Brastaviceanu

SunAir Solar Power Controller Board/Tracker/Phone Charger by SwitchDoc Labs - Kickstarter - 1 views

www.kickstarter.com/...controller-board-tracker-phone

microgarden_project

shared by Tiberius Brastaviceanu on 23 Dec 14 - No Cached
  • Tiberius Brastaviceanu on 23 Dec 14
     
    solar power for the eCG project, outdoor applications.
Guillaume Barreau

Growing lettuce under LED in Japan - 0 views

www.gereports.com/...-future-japanese-farmer-builds

food_system urban farming

shared by Guillaume Barreau on 03 Dec 14 - No Cached
  • Guillaume Barreau on 03 Dec 14
     
    The LED lights are a key part of the farm's magic. They allow Shimamura to control the night-and-day cycle and accelerate growth. "What we need to do is not just setting up more days and nights," he says. "We want to achieve the best combination of photosynthesis during the day and breathing at night by controlling the lighting and the environment." Shimamura says that the systems allows him to grow lettuce full of vitamins and minerals two-and-a-half times faster than an outdoor farm. He is also able to cut discarded produce from 50 percent to just 10 percent of the harvest, compared to a conventional farm. As a result, the farms productivity per square foot is up 100-fold, he says.
Kurt Laitner

Digital Reality | Edge.org - 0 views

edge.org/...il_gershenfeld-digital-reality

*neilgershenfeld fab labs IoT molecular computing nano star trek replicator

shared by Kurt Laitner on 17 Feb 15 - No Cached
  • When you snap the bricks together, you don't need a ruler to play Lego; the geometry comes from the parts
  • first attribute is metrology that comes from the parts
  • digitizing composites into little linked loops of carbon fiber instead of making giant pieces
  • ...75 more annotations...
  • In a 3D printer today, what you can make is limited by the size of the machine. The geometry is external
  • is the Lego tower is more accurate than the child because the constraint of assembling the bricks lets you detect and correct errors
  • That's the exponential scaling for working reliably with unreliable parts
  • Because the parts have a discrete state, it means in joining them you can detect and correct errors
  • detect and correct state to correct errors to get an exponential reduction in error, which gives you an exponential increase in complexity
  • The next one is you can join Lego bricks made out of dissimilar materials.
  • The last one is when you're done with Lego you don't put it in the trash; you take it apart and reuse it because there's state in the materials. In a forest there's no trash; you die and your parts get disassembled and you're made into new stuff. When you make a 3D print or laser cut, when you're done there's recycling attempts but there's no real notion of reusing the parts
  • The metrology coming from the parts, detecting and correcting errors, joining dissimilar materials, disconnecting, reusing the components
  • On the very smallest scale, the most exciting work on digital fabrication is the creation of life from scratch. The cell does everything we're talking about. We've had a great collaboration with the Venter Institute on microfluidic machinery to load designer genomes into cells. One step up from that we're developing tabletop chip fab instead of a billion dollar fab, using discrete assembly of blocks of electronic materials to build things like integrated circuits in a tabletop process
  • a child can make a Lego structure bigger than themself
  • There's a series of books by David Gingery on how to make a machine shop starting with charcoal and iron ore.
  • There are twenty amino acids. With those twenty amino acids you make the motors in the molecular muscles in my arm, you make the light sensors in my eye, you make my neural synapses. The way that works is the twenty amino acids don't encode light sensors, or motors. They’re very basic properties like hydrophobic or hydrophilic. With those twenty properties you can make you. In the same sense, digitizing fabrication in the deep sense means that with about twenty building blocks—conducting, insulating, semiconducting, magnetic, dielectric—you can assemble them to create modern technology
  • By discretizing those three parts we can make all those 500,000 resistors, and with a few more parts everything else.
  • Now, there's a casual sense, which means a computer controls something to make something, and then there's the deep sense, which is coding the materials. Intellectually, that difference is everything but now I'm going to explain why it doesn't matter.
  • Then in turn, the next surprise was they weren't there for research, they weren't there for theses, they wanted to make stuff. I taught additive, subtractive, 2D, 3D, form, function, circuits, programming, all of these skills, not to do the research but just using the existing machines today
  • What they were answering was the killer app for digital fabrication is personal fabrication, meaning, not making what you can buy at Walmart, it’s making what you can't buy in Walmart, making things for a market of one person
  • The minicomputer industry completely misread PCs
  • the Altair was life changing for people like me. It was the first computer you could own as an individual. But it was almost useless
  • It was hard to use but it brought the cost from a million dollars to 100,000 and the size from a warehouse down to a room. What that meant is a workgroup could have one. When a workgroup can have one it meant Ken Thompson and Dennis Ritchie at Bell Labs could invent UNIX—which all modern operating systems descend from—because they didn't have to get permission from a whole corporation to do it
  • At the PC stage what happened is graphics, storage, processing, IO, all of the subsystems got put in a box
  • To line that up with fabrication, MIT's 1952 NC Mill is similar to the million-dollar machines in my lab today. These are the mainframes of fab. You need a big organization to have them. The fab labs I'll tell you about are exactly analogous to the cost and complexity of minicomputers. The machines that make machines I'll tell you about are exactly analogous to the cost and complexity of the hobbyist computers. The research we're doing, which is leading up to the Star Trek Replicator, is what leads to the personal fabricator, which is the integrated unit that makes everything
  • conducting, resistive, insulating.
  • The fab lab is 2 tons, a $100,000 investment. It fills a few thousand square feet, 3D scanning and printing, precision machining, you can make circuit boards, molding and casting tooling, computer controlled cutting with a knife, with a laser, large format machining, composite layup, surface mount rework, sensors, actuators, embedded programming— technology to make technology.
  • Ten years you can just plot this doubling. Today, you can send a design to a fab lab and you need ten different machines to turn the data into something. Twenty years from now, all of that will be in one machine that fits in your pocket.
  • We've been living with this notion that making stuff is an illiberal art for commercial gain and it's not part of the means of expression. But, in fact, today, 3D printing, micromachining, and microcontroller programming are as expressive as painting paintings or writing sonnets but they're not means of expression from the Renaissance. We can finally fix that boundary between art and artisans
  • You don't go to a fab lab to get access to the machine; you go to the fab lab to make the machine.
  • Over the next maybe five years we'll be transitioning from buying machines to using machines to make machines. Self-reproducing machines
  • But they still have consumables like the motors, and they still cut or squirt. Then the interesting transition comes when we go from cutting or printing to assembling and disassembling, to moving to discretely assembled materials
  • because if anybody can make anything anywhere, it challenges everything
    • Kurt Laitner
      Kurt Laitner on 17 Feb 15
       
      great quote (replace challenges with changes for effect)
  • Now, the biggest surprise for me in this is I thought the research was hard. It's leading to how to make the Star Trek Replicator. The insight now is that's an exercise in embodied computation—computation in materials, programming their construction. Lots of work to come, but we know what to do
  • And that's when you do tabletop chip fab or make airplanes. That's when technical trash goes away because you can disassemble. 
  • irritated by the maker movement for the failure in mentoring
  • At something like a Maker Faire, there's hall after hall of repeated reinventions of bad 3D printers and there isn't an easy process to take people from easy to hard
  • We started a project out of desperation because we kept failing to succeed in working with existing schools, called the Fab Academy. Now, to understand how that works, MIT is based on scarcity. You assume books are scarce, so you have to go there for the library; you assume tools are scarce, so you have to go there for the machines; you assume people are scarce, so you have to go there to see them; and geography is scarce. It adds up to we can fit a few thousand people at a time. For those few thousand people it works really well. But the planet is a few billion people. We're off by six orders of magnitude. 
  • Next year we're starting a new class with George Church that we've called "How to Grow Almost Anything", which is using fab labs to make bio labs and then teach biotech in it. What we're doing is we're making a new global kind of university
  • Amusingly, I went to my friends at Educause about accrediting the Fab Academy and they said, "We love it. Where are you located?" And I said, "Yes" and they said, "No." Meaning, "We're all over the earth." And they said, "We have no mechanism. We're not allowed to do that. There's no notion of global accreditation."
  • Then they said something really helpful: "Pretend."
  • Once you have a basic set of tools, you can make all the rest of the tools
  • The way the Fab Academy works, in computing terms, it's like the Internet. Students have peers in workgroups, with mentors, surrounded by machines in labs locally. Then we connect them globally by video and content sharing and all of that. It's an educational network. There are these critical masses of groups locally and then we connect them globally
  • You still have Microsoft or IBM now but, with all respect to colleagues there, arguably that's the least interesting part of software
  • To understand the economic and social implications, look at software and look at music to understand what's happening now for fabrication
  • There's a core set of skills a place like MIT can do but it alone doesn't scale to a billion people. This is taking the social engineering—the character of MIT—but now doing it on this global scale.
  • Mainframes didn't go away but what opened up is all these tiers of software development that weren't economically viable
  • If you look at music development, the most interesting stuff in music isn't the big labels, it's all the tiers of music that weren't viable before
  • You can make music for yourself, for one, ten, 100, 1,000, a million. If you look at the tracks on your device, music is now in tiers that weren't economically viable before. In that example it's a string of data and it becomes a sound. Now in digital fab, it's a string of data and it becomes a thing.
  • What is work? For the average person—not the people who write for Edge, but just an average person working—you leave home to go to a place you'd rather not be, doing a repetitive operation you'd rather not do, making something designed by somebody you don't know for somebody you'll never see, to get money to then go home and buy something. But what if you could skip that and just make the thing?
    • Kurt Laitner
      Kurt Laitner on 17 Feb 15
       
      !!!
  • It took about ten years for the dot com industry to realize pretty much across the board you don't directly sell the thing. You sell the benefits of the thing
  • 2016 it's in Shenzhen because they're pivoting from mass manufacturing to enabling personal fabrication. We've set Shenzhen as the goal in 2016 for Fab Lab 2.0, which is fab labs making fab labs
  • To rewind now, you can send something to Shenzhen and mass manufacture it. There's a more interesting thing you can do, which is you go to market by shipping data and you produce it on demand locally, and so you produce it all around the world.
  • But their point was a lot of printers producing beautiful pages slowly scales if all the pages are different
  • In the same sense it scales to fabricate globally by doing it locally, not by shipping the products but shipping the data.
  • It doesn't replace mass manufacturing but mass manufacturing becomes the least interesting stuff where everybody needs the same thing. Instead, what you open up is all these tiers that weren't viable before
  • There, they consider IKEA the enemy because IKEA defines your taste. Far away they make furniture and flat pack it and send it to a big box store. Great design sense in Barcelona, but 50 percent youth unemployment. A whole generation can't work. Limited jobs. But ships come in from the harbor, you buy stuff in a big box store. And then after a while, trucks go off to a trash dump. They describe it as products in, trash out. Ships come in with products, trash goes out
    • Kurt Laitner
      Kurt Laitner on 17 Feb 15
       
      worse actually.. the trash stays
  • The bits come and go, globally connected for knowledge, but the atoms stay in the city.
  • instead of working to get money to buy products made somewhere else, you can make them locally
    • Kurt Laitner
      Kurt Laitner on 17 Feb 15
       
      this may solve greece's problem, walk away from debt, you can't buy other people's (country's) stuff anymore, so make it all yourself
  • The biggest tool is a ShotBot 4'x8'x1' NC mill, and you can make beautiful furniture with it. That's what furniture shops use
  • Anything IKEA makes you can make in a fab lab
  • it means you can make many of the things you consume directly rather than this very odd remote economic loop
  • the most interesting part of the DIY phone projects is if you're making a do-it-yourself phone, you can also start to make the things that the phones talk to. You can start to build your own telco providers where the users provide the network rather than spending lots of money on AT&T or whoever
  • Traditional manufacturing is exactly replaying the script of the computer companies saying, "That's a toy," and it's shining a light to say this creates entirely new economic activity. The new jobs don't come back to the old factories. The ability to make stuff on demand is creating entirely new jobs
  • To keep playing that forward, when I was in Barcelona for the meeting of all these labs hosted by the city architect and the city, the mayor, Xavier Trias, pushed a button that started a forty-year countdown to self-sufficiency. Not protectionism
  • I need high-torque efficient motors with integrated lead screws at low cost, custom-produced on demand. All sorts of the building blocks that let us do what I'm doing currently rest on a global supply chain including China's manufacturing agility
  • The short-term answer is you can't get rid of them because we need them in the supply chain. But the long-term answer is Shenzhen sees the future isn't mass producing for everybody. That's a transitional stage to producing locally
  • My description of MIT's core competence is it's a safe place for strange people
  • The real thing ultimately that's driving the fab labs ... the vacuum we filled is a technical one. The means to make stuff. Nobody was providing that. But in turn, the spaces become magnets. Everybody talks about innovation or knowledge economy, but then most things that label that strangle it. The labs become vehicles for bright inventive people who don't fit locally. You can think about the culture of MIT but on this global scale
  • My allegiance isn't to any one border, it's to the brainpower of the planet and this is building the infrastructure to scale to that brainpower
  • If you zoom from transistors to microcode to object code to a program, they don't look like each other. But if we take this room and go from city, state, country, it's hierarchical but you preserve geometry
  • Computation violates geometry unlike most anything else we do
  • The reason that's so important for the digital fabrication piece is once we build molecular assemblers to build arbitrary systems, you don't want to then paste a few lines of code in it. You need to overlay computation with geometry. It's leading to this complete do-over of computer science
  • If you take digital fab, plus the real sense of Internet of Things—not the garbled sense—plus the real future of computing aligning hardware and software, it all adds up to this ability to program reality
  • I run a giant video infrastructure and I have collaborators all over the world that I see more than many of my colleagues at MIT because we're all too busy on campus. The next Silicon Valley is a network, it's not a place. Invention happens in these networks.
  • When Edwin Land was kicked out of Polaroid, he made the Rowland Institute, which was making an ideal research institute with the best facilities and the best people and they could do whatever they want. But almost nothing came from it because there was no turnover of the gene pool, there was no evolutionary pressure.  
  • the wrong way to do research, which is to believe there's a privileged set of people that know more than anybody else and to create a barrier that inhibits communication from the inside to the outside
  • you need evolutionary pressure, you need traffic, you need to be forced to deal with people you don't think you need to encounter, and you need to recognize that to be disruptive it helps to know what people know
  • For me the hardest thing isn't the research. That's humming along nicely. It's that we're finding we have to build a completely new kind of social order and that social entrepreneurship—figuring out how you live, learn, work, play—is hard and there's a very small set of people who can do that kind of organizational creation.
    • Kurt Laitner
      Kurt Laitner on 17 Feb 15
       
      our challenge in the OVN space
  • Kurt Laitner on 17 Feb 15
     
    what is heavy is local, what is light is global, and increasingly manufacturing is being recreated along this principle
Kurt Laitner

Crisis of Value Theory - P2P Foundation - 0 views

p2pfoundation.net/Crisis_of_Value_Theory

Michel Bauwens Kevin Carson capitalism alternative economy paper

shared by Kurt Laitner on 11 Jul 12 - Cached
  • accumulation of knowledge assets
  • a new class has arisen which controls the vectors of information
  • In terms of knowledge creation, a vast new information commons is being created, which is increasingly out of the control of cognitive capitalism.
  • ...19 more annotations...
  • But notice that to do this, the system had to change, the core logic was no longer the same.
  • The emergence of the peer model of production, based on the non-rivalrous nature and virtually non-existent marginal cost of reproduction of digital information, and coupled with the increasing unenforceability of “intellectual property” laws, means that capital is incapable of realizing returns on ownership in the cognitive realm.
  • capital is becoming an a posteriori intervention in the realization of innovation, rather than a condition for its occurrence
  • 1) The creation of non-monetary value is exponential 2) The monetization of such value is linear
  • What this announces is a crisis of value, most such value is ‘beyond measure’, but also essentially a crisis of accumulation of capital.
  • more and more positive externalizations are created from the social field
  • “the core logic of the emerging experience economy, operating as it does in the world of non-rival exchange, is unlikely to have capitalism as its core logic.”
  • This takes the form both of “intellectual property” law, as well as direct subsidies from the taxpayer to the corporate economy
  • crisis of realization under state capitalism to capital’s growing dependence on the state to capture value from social production and redistribute it to private corporate owners
  • The state capitalist system will reach a point at which, thanks to the collapse of the portion of value comprised of rents on artificial property, the base of taxable value is imploding at the very time big business most needs subsidies to stay afloat.
  • We live in a political economy that has it exactly backwards. We believe that our natural world is infinite, and therefore that we can have an economic system based on infinite growth. But since the material world is finite, it is based on pseudo-abundance. And then we believe that we should introduce artificial scarcities in the world of immaterial production, impeding the free flow of culture and social innovation, which is based on free cooperation, by creating the obstacle of permissions and intellectual property rents protected by the state. What we need instead is a political economy based on a true notion of scarcity in the material realm, and a realization of abundance in the immaterial realm.
  • Brains and bodies still need others to produce value, but the others they need are not necessarily provided by capital and its capacities to organize production.
  • The household and informal economies have been allowed to function to the extent that they bear reproduction costs that would otherwise have to be internalized in wages; but they have been suppressed (as in the Enclosures) when they threaten to increase in size and importance to the point of offering a basis for independence from wage labor. “
  • increasing untenability of property rights in the information realm
  • there is no more outside.
  • one of intensive development, to grow in the immaterial field, and this is basically what the experience economy means
  • Innovation is becoming social and diffuse, an emergent property of the networks
  • failure of artificial abundance
  • failure of artificial scarcity
  • Kurt Laitner on 11 Jul 12
     
    the passing of the capitalist age
Tiberius Brastaviceanu

Places to Intervene in a System by Donella H. Meadows - developer.*, Developer Dot Star - 0 views

www.developerdotstar.com/...places_intervene_system.html

systems complexity management paper

shared by Tiberius Brastaviceanu on 20 Sep 11 - Cached
  • Folks who do systems analysis have a great belief in "leverage points."
  • where a small shift in one thing can produce big changes in everything.
  • backward intuition
  • ...15 more annotations...
  • "Places to Intervene in a System," followed by nine items: 9.  Numbers (subsidies, taxes, standards). 8.  Material stocks and flows. 7.  Regulating negative feedback loops. 6.  Driving positive feedback loops. 5.  Information flows. 4.  The rules of the system (incentives, punishment, constraints). 3.  The power of self-organization. 2.  The goals of the system. 1.  The mindset or paradigm out of which the goals, rules, feedback structure arise.
  • an invitation to think more broadly about system change.
  • Numbers ("parameters" in systems jargon) determine how much of a discrepancy turns which faucet how fast.
  • some of which are physically locked in, but most of which are popular intervention points.
  • Probably ninety-five percent of our attention goes to numbers, but there's not a lot of power in them.
  • Not that parameters aren't important—they can be, especially in the short term and to the individual who's standing directly in the flow. But they rarely change behavior. If the system is chronically stagnant, parameter changes rarely kick-start it. If it's wildly variable, they don't usually stabilize it. If it's growing out of control, they don't brake it.
  • Spending more on police doesn't make crime go away.
  • Numbers become leverage points when they go into ranges that kick off one of the items higher on this list.
  • Probably the most common kind of critical number is the length of delay in a feedback loop.
  • A delay in a feedback process is critical relative to rates of change (growth, fluctuation, decay) in the system state that the feedback loop is trying to control.
  • Delays that are too short cause overreaction, oscillations amplified by the jumpiness of the response. Delays that are too long cause damped, sustained, or exploding oscillations, depending on how much too long. At the extreme they cause chaos. Delays in a system with a threshold, a danger point, a range past which irreversible damage can occur, cause overshoot and collapse.
  • delays are not often easily changeable
  • It's usually easier to slow down the change rate (positive feedback loops, higher on this list), so feedback delays won't cause so much trouble
  • Most systems have evolved or are designed to stay out of sensitive parameter ranges. Mostly, the numbers are not worth the sweat put into them.
  • The plumbing structure, the stocks and flows and their physical arrangement, can have an enormous effect on how a system operates.
Tiberius Brastaviceanu

Open Source 3-D Printed Nutating Mixer - Appropedia, the sustainability wiki - 0 views

www.appropedia.org/rce_3-D_Printed_Nutating_Mixer

open science open hardware OSH catalog

shared by Tiberius Brastaviceanu on 10 Oct 23 - No Cached
  • Tiberius Brastaviceanu on 10 Oct 23
     
    "As the open source development of additive manufacturing has led to low-cost desktop three-dimensional (3-D) printing, a number of scientists throughout the world have begun to share digital designs of free and open source scientific hardware. Open source scientific hardware enables custom experimentation, laboratory control, rapid upgrading, transparent maintenance, and lower costs in general. To aid in this trend, this study describes the development, design, assembly, and operation of a 3-D printable open source desktop nutating mixer, which provides a fixed 20° platform tilt angle for a gentle three-dimensional (gyrating) agitation of chemical or biological samples (e.g., DNA or blood samples) without foam formation. The custom components for the nutating mixer are designed using open source FreeCAD software to enable customization. All of the non-readily available components can be fabricated with a low-cost RepRap 3-D printer using an open source software tool chain from common thermoplastics. All of the designs are open sourced and can be configured to add more functionality to the equipment in the future. It is relatively easy to assemble and is accessible to both the science education of younger students as well as state-of-the-art research laboratories. Overall, the open source nutating mixer can be fabricated with US$37 in parts, which is 1/10th of the cost of proprietary nutating mixers with similar capabilities. The open source nature of the device allow it to be easily repaired or upgraded with digital files, as well as to accommodate custom sample sizes and mixing velocities with minimal additional costs."
chrisaiki

Smart Contracts are self-executing contractual states, stored on the blockchain, which ... - 0 views

smartcontract.com

smart contract

shared by chrisaiki on 27 May 16 - No Cached
  • chrisaiki on 27 May 16
     
    Smart Contracts are self-executing contractual states, stored on the blockchain, which nobody controls and therefore everyone can trust. Contacted by Christophe may 28th
Justin McCollen

Top Quality Spill Control Products and Services - 2 views

Bunding

started by Justin McCollen on 01 Mar 13 no follow-up yet
Francois Bergeron

Stretchable electronics to simplify heart surgery? - 0 views

www.newelectronics.co.uk/...46234

shared by Francois Bergeron on 13 Dec 12 - No Cached
  • Currently this catheter method requires the use of three different devices, which are inserted into the heart in succession: one to map the heart's signals and detect the problem area, a second to control positions of therapeutic actuators and their contact with the epicardium, and a third to burn the tissue away.
  • The device is designed to deliver critical, high quality information - such as temperature, mechanical force, and blood flow - to the surgeon in real time.
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