ENTRIES TAGGED "hardware hacks"
Tabular Data API, Open Stanford Courses, Wearable TV, and Wearable Sensors
- Tablib — MIT-licensed open source library for manipulating tabular data. Reputed to have a great API. (via Tim McNamara)
- Stanford Education Everywhere — courses in CS, machine learning, math, and engineering that are open for all to take. Over 58,000 have already signed up for the introduction to machine learning taught by Peter Norvig, Google’s Director of Research.
- Wearable LED Television — 160×120 RGBs powered by a 12v battery, built for Burning Man (natch). (via Bridget McKendry)
- Temporary Tattoo Biosensors (Science News) — early work putting flexible sensors into temporary tattoos. (via BoingBoing)
Solar Wireless Sensors, CSS Lint, Options Explained, and Web Hacks
- Solar Powered Wireless Sensor Network — Chris is building wireless sensor networks using open source software and hardware that could be used in a variety of applications like air quality or home energy monitoring. It looks like he was inspired by Tweetawatt and is using xBee and ASUS wifi for communication in conjunction with Pachube for data display. (via MindKits)
- CSS Lint — validate and quality check your CSS. (via Jacine Luisi)
- An Introduction to Stock Options for the Tech Entrepreneur or Startup Employee (Scribd) — nice introduction to board, stock, options, finance, dilution, and more.
- Interesting Web Hacks (Quora) — You can quickly run HTML in the browser without creating a HTML file: Enter this in the address bar: data:text/html,<h1>Hello, world!<h1> (via Alex Gibson)
Email Game, Faster B Trees, RFID+Projectors, and Airport Express Broken
- The Email Game — game mechanics to get you answering email more efficiently. Can’t wait to hear that conversation with corporate IT. “You want us to install what on the Exchange server?” (via Demo Day Wrapup)
- Stratified B-trees and versioning dictionaries — A classic versioned data structure in storage and computer science is the copy-on-write (CoW) B-tree — it underlies many of today’s file systems and databases, including WAFL, ZFS, Btrfs and more. Unfortunately, it doesn’t inherit the B-tree’s optimality properties; it has poor space utilization, cannot offer fast updates, and relies on random IO to scale. Yet, nothing better has been developed since. We describe the `stratified B-tree’, which beats all known semi-external memory versioned B-trees, including the CoW B-tree. In particular, it is the first versioned dictionary to achieve optimal tradeoffs between space, query and update performance. (via Bob Ippolito)
- DisplayCabinet (Ben Bashford) — We embedded a group of inanimate ornamental objects with RFID tags. Totems or avatars that represent either people, products or services. We also added RFID tags to a set of house keys and a wallet. Functional things that you carry with you. This group of objects combine with a set of shelves containing a hidden projector and RFID reader to become DisplayCabinet. (via Chris Heathcote)
- shairport — Aussie pulled the encryption keys from an Airport Express device, so now you can have software pretend to be an Airport Express.
- SideStep — Mac OS X program that automatically routes connections through a secure proxy when you’re on an unsecured wifi network. (via Gina Trapani)
- Junkyard Jumbotron (MIT) — lets you take a bunch of random displays and instantly stitch them together into a large, virtual display, simply by taking a photograph of them. It works with laptops, smartphones, tablets — anything that runs a web browser. It also highlights a new way of connecting a large number of heterogenous devices to each other in the field, on an ad-hoc basis.
- Kinect-Controlled Tesla Coil (YouTube) — “now say: Fools, I’ll Destroy You All!”. (via AdaFruit)
Node.JS Cluster, Experience Culture, Robots in Education, and Homebrew Printer
- Nokia Culture Will Out (Adam Greenfield) — Except that, as realized by Nokia, this is precisely what failed to happen. I experienced, in fact, neither a frisson of elegant futurism nor a blasé presentiment of everyday life at midcentury. I was given an NFC phone, and told to tap it against the item I wanted from the vending machine. This is what happened next: the vending machine teeped, and the phone teeped, and six or seven seconds later a notification popped up on its screen. It was an incoming text message, which had been sent by the vending machine at the moment I tapped my phone against it. I had to respond “Y” to this text to complete the transaction. The experience was clumsy and joyless and not in any conceivable way an improvement over pumping coins into the soda machine just the way I did quarters into Defender at the age of twelve.
- NextGen Education and Research Robotics — virtual conference on robotics in education.
- Homemade Arduino Printer (Instructables) — made with an Arduino, two dead CD/DVD drives and a marker pen. Clever hack! (via MindKits on Twitter)