"sensors" entries

Four short links: 29 July 2015

Four short links: 29 July 2015

Mobile Medical Scanner, Amazon Hardware Showcase, Consistency Challenges, and Govt Alpha Geeks

  1. Cellphone-Based Hand-Held Microplate Reader for Point-of-Care Testing of Enzyme-Linked Immunosorbent Assayswe created a hand-held and cost-effective cellphone-based colorimetric microplate reader that implements a routine hospital test used to identify HIV and other conditions. (via RtoZ)
  2. Amazon Launchpad — a showcase for new hardware startups, who might well be worried about Amazon’s “watch what sells and sell a generic version of it” business model.
  3. Challenges to Adopting Stronger Consistency at Scale (PDF) — It is not obvious that a system that trades stronger consistency for increased latency or reduced availability would be a net benefit to people using Facebook, especially when compared against a weakly consistent system that resolves many inconsistencies with ad hoc mechanisms.
  4. The White House’s Alpha Geeks — Megan Smith for President. I realize now there’s two things we techies should do — one is go where there are lots of us, like MIT or Silicon Valley or whatever, because you can move really fast and do extraordinary things. The other is, go where you’re rare.It’s almost like you’re a frog in boiling water; you don’t really realize how un-diverse it is until you’re in a normal diverse American innovative community like the President’s team. And then you go back and you’re like, wow. You feel, “Man, this industry is so awesome and yet we’re missing all of this talent.”
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Four short links: 26 June 2015

Four short links: 26 June 2015

Internet of Gluten, Testing Less, Synthetic Blood, and Millibot Guns

  1. 6SensorLabs — product is a grind-your-food-for-my-sensor product that tests for the presence of gluten. Or, as celiacs call it, death.
  2. The Art of Testing Less Without Sacrificing Quality (Paper a Day) — until finally you don’t test at all and it’s perfect!
  3. Synthetic Blood Transfusions Within Two Years (Independent) — Britain’s National Health Service, boldly planning on still being around in two years.
  4. Self-Assembling Millirobotic Gauss Gun (IEEE Spectrum) — they’ll blast their way through arterial blockages.
Comment: 1
Four short links: 20 April 2015

Four short links: 20 April 2015

Edtech Advice, MEMS Sensors, Security in Go, and Building Teams

  1. Ed Tech Developer’s Guide (PDF) — U.S. government’s largely reasonable advice for educational technology startups. Nonetheless, take with a healthy dose of The Audrey Test.
  2. The Crazy-Tiny Next Generation of Computers — 1 cubic millimeter-sized sensors are coming. The only sound you might hear is a prolonged groan. That’s because these computers are just one cubic millimeter in size, and once they hit the floor, they’re gone. “We just lose them,” Dutta says. “It’s worse than jewelry.”
  3. Looking for Security Trouble Spots in Go — brief summary of the known security issues in and around Go code.
  4. The New Science of Building Great Teams (Sandy Pentland) — fascinating discussion of MIT’s Human Dynamics lab’s research into how great teams function. The data also reveal, at a higher level, that successful teams share several defining characteristics: 1. Everyone on the team talks and listens in roughly equal measure, keeping contributions short and sweet. 2. Members face one another, and their conversations and gestures are energetic. 3. Members connect directly with one another—not just with the team leader. 4. Members carry on back-channel or side conversations within the team. 5. Members periodically break, go exploring outside the team, and bring information back.
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A bigger and different way of looking at the IoT

Tim O’Reilly’s Solid Conference keynote highlights the capabilities that will let us shape the physical world.

Tim O’Reilly has recently focused on the connection between humans and the Internet of Things (IoT). It’s a topic he’s written about and talked about, and it’s also at the heart of our explorations into interaction design and connected devices and experience design and the Internet of Things.

O’Reilly’s keynote address at the Solid Conference in 2014 explored the human-IoT link. The talk expanded the scope of the IoT, making it clear this isn’t just about individual devices and software — we’re creating “networks of intelligence” that will shape how people work and live.

The talk has become an essential resource for us as we’ve investigated the blurring of the physical and virtual worlds. That’s why we decided to put together a text-friendly version of the presentation that’s easy to scan and reference. And since we think it’s so useful, we’ve made the text version publicly available.

You can download your free copy of “Software Above the Level of a Single Device: The Implications” here. Read more…

Comment: 1
Four short links: 11 September 2014

Four short links: 11 September 2014

Win98 Retro, Glass as Sensor, Theoretical CS, and Code Search

  1. windows_98.css — the compelling new look that’s sweeping the world all over again.
  2. BioGlass (MIT) — use Glass’s accelerometer, gyroscope, and camera to extract pulse and respiratory rates. (via MIT Tech Review)
  3. Building Blocks for Theoretical Computer Science — free online textbook covering what I lovingly think of as “the mathy bits of computing that are so damn hard”.
  4. The Platinum Searchercode search tool similar to ack and ag. It supports multi platforms and multi encodings. Written in go, and is fast.
Comment: 1
Four short links: 13 August 2014

Four short links: 13 August 2014

Thinking Machines, Chemical Sensor, Share Containerised Apps, and Visualising the Net Neutrality Comments

  1. Viv — another step in the cognition race. Wolfram Alpha was first out the gate, but Watson, Viv, and others are hot on heels of being able to parse complex requests, then seek and use information to fulfil them.
  2. Universal Mobile Electrochemical Detector Designed for Use in Resource-limited Applications (PNAS) — $35 handheld sensor with mobile phone connection. The electrochemical methods that we demonstrate enable quantitative, broadly applicable, and inexpensive sensing with flexibility based on a wide variety of important electroanalytical techniques (chronoamperometry, cyclic voltammetry, differential pulse voltammetry, square wave voltammetry, and potentiometry), each with different uses. Four applications demonstrate the analytical performance of the device: these involve the detection of (i) glucose in the blood for personal health, (ii) trace heavy metals (lead, cadmium, and zinc) in water for in-field environmental monitoring, (iii) sodium in urine for clinical analysis, and (iv) a malarial antigen (Plasmodium falciparum histidine-rich protein 2) for clinical research. (via BoingBoing)
  3. panamax.io containerized app creator with an open-source app marketplace hosted in GitHub. Panamax provides a friendly interface for users of Docker, Fleet & CoreOS. With Panamax, you can easily create, share and deploy any containerized app no matter how complex it might be.
  4. Quid Analysis of Comments to FCC on Net Neutrality (NPR) — visualising the themes and volume of the comments. Interesting factoid: only half the comments were derived from templates (cf 80% in submissions to some financial legislation).
Comment: 1

3 topologies driving IoT networking standards

The importance of network architecture on the Internet of Things

This article is part of a series exploring the role of networking in the Internet of Things.

There are a lot of moving parts in the networking for the Internet of Things; a lot to sort out between WiFi, WiFi LP, Bluetooth, Bluetooth LE, Zigbee, Z-Wave, EnOcean and others. Some standards are governed by open, independent standards bodies, while others are developed by a single company and are being positioned as defacto standards. Some are well established, others are in the early adoption stage. All were initially developed to meet unique application-specific requirements such as range, power consumption, bandwidth, and scalability. Although these are familiar issues, they take on a new urgency in IoT networks.

To begin establishing the right networking technology for your application, it is important to first understand the network architecture, or the network topology, that is supported by each technology standard. The networking standards being used today in IoT can be categorized into three basic network topologies; point-to-point, star, and mesh. Read more…

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Four short links: 5 March 2014

Four short links: 5 March 2014

Cheap Gesture Sensor, Ignorance as Strength, Android Malware Resistance, and Security Talks

  1. $1 Gesture-Recognizing Device (GigaOm) — the AllSee is the size of a quarter, harvests RF for power, and detects the variations in signal strength caused by gestures.
  2. A Conversation with Sydney BrennerThe thing is to have no discipline at all. Biology got its main success by the importation of physicists that came into the field not knowing any biology and I think today that’s very important. I strongly believe that the only way to encourage innovation is to give it to the young. The young have a great advantage in that they are ignorant. Because I think ignorance in science is very important. If you’re like me and you know too much you can’t try new things. I always work in fields of which I’m totally ignorant.
  3. Android Almost Impenetrable to Malware — multiple layers of defence, including signatures of known-bad systems found in the wild, necessary to retain an “open” marketplace vs Apple’s lock-down.
  4. TrustyCon (YouTube) — video of the speakers at the conference that was set up by speakers who withdrew from the RSA conference. (via BoingBoing)
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Four short links: 14 February 2014

Four short links: 14 February 2014

Bitcoin Analysis, 3D Crime Scenes, 3D Display, and Cloud API

  1. Bitcoin: Understanding and Assessing Potential Opportunities (Slideshare) — VC deck on Bitcoin market and opportunities, long-term and short-term. Interesting lens on the development and gaps.
  2. Queensland Police Map Crime Scenes with 3D Scanner (ComputerWorld) — can’t wait for the 3D printed merchandise from famous trials.
  3. Atheer LabsAn immersive 3D display, over a million apps, sub-mm 3D hand interaction, all in 75 grams.
  4. libcloudPython library for interacting with many of the popular cloud service providers using a unified API.
Comments: 2
Four short links: 13 February 2014

Four short links: 13 February 2014

Open Web Ranking, Quantified Self Gadgets, Armband Input, and Bitcoin Exchanges Threatened

  1. The Common Crawl WWW Ranking — open data, open methodology, behind an open ranking of the top sites on the web. Preprint paper available. (via Slashdot)
  2. Felton’s Sensors (Quartz) — inside the gadgets Nicholas Felton uses to quantify himself.
  3. Myo Armband (IEEE Spectrum) — armband input device with eight EMG (electromyography) muscle activity sensors along with a nine-axis inertial measurement unit (that’s three axes each for accelerometer, gyro, and magnetometer), meaning that you get forearm gesture sensing along with relative motion sensing (as opposed to absolute position). The EMG sensors pick up on the electrical potential generated by muscle cells, and with the Myo on your forearm, the sensors can read all of the muscles that control your fingers, letting them spy on finger position as well as grip strength.
  4. Bitcoin Exchanges Under Massive and Concerted Attack — he who lives by the network dies by the network. a DDoS attack is taking Bitcoin’s transaction malleability problem and applying it to many transactions in the network, simultaneously. “So as transactions are being created, malformed/parallel transactions are also being created so as to create a fog of confusion over the entire network, which then affects almost every single implementation out there,” he added. Antonopoulos went on to say that Blockchain.info’s implementation is not affected, but some exchanges have been affected – their internal accounting systems are gradually going out of sync with the network.
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