Jeff Barr's Blog

Things I Like..

Links for Friday, December 28, 2012

  • KHK Stock Gears – “8399 types of Stock Gears for Robots.
  • Welcome to RobotShop U.S.A. – “RobotShop, the World’s Leading Robot Store for Personal and Professional Robot Technology. Here you will find personal robots, professional robots, robot toys, robot kits and robot parts for building your own robots.
  • Norris Labs – “My name is Steve Norris. This is my personal web site. Here you will find a collection of robot projects that I have built over the past few years. You are free to use the schematics, diagrams and source code to build your own version for non-commercial use.
  • Minds-I: All Terrain Robots – “The MINDS-i’s vision results from the belief that the world of competitive robotics can and should do more, and the fervent desire to stimulate young minds and bring that excitement beyond the classroom
  • ATOP – “Atop is an ASCII full-screen performance monitor that is capable of reporting the activity of all processes (even if processes have finished during the interval), daily logging of system and process activity for long-term analysis, highlighting overloaded system resources by using colors, etc. At regular intervals, it shows system-level activity related to the CPU, memory, swap, disks and network layers, and for every process (and thread) it shows a.o. the CPU utilization, memory growth, disk utilization, priority, username, state, and exit code.
  • Links for Friday, December 22, 2012

    Time to clean out my browser menu before the holidays:

  • BrickPicker: The End of Life is the Start of Profits – “Missing out on a great LEGO set is a gut-wrenching feeling that happens all too often for the casual LEGO investor. The two-year rule is nothing more than a vague LEGO barometer for when a set might go EOL. As with almost every rule there are exceptions…in this case many exceptions!
  • Adafruit Industries: OLED LEGO Train Schedule – “I started thinking about various ways Adafruit electronics and LEGO bricks could be combined. I’ve always thought it would be cool to have a minifig scale video display instead of a sticker or printed brick. So, I decided to give my minifigs a dynamic train schedule.
  • Core Developers Team: UPCORE G1 Bluetooth Receiver for Power Functions System – “PCORE G1 has 9 connectors to control your brick creations and models. 3 connectors are fully proportional, you can regulate your supply motors M-motors, XL-motors, LEDs and other appliances in the range 0-100%. 5 connectors is non proportional, these connectors can control their creations as well as with non proportional control Power Functions.
  • LPE Power: Pneumatic SYS Inline 3 Cylinder Engine – “The LPEpower team is most proud to present you this new inline 3 power plant, we consider it to be an epitome of efficiency. Compared to its predecesor it is more powerful, smaller and lighter.
  • Robot2: Segway with Robot Driver – “This project is based on my universal balancing robot code. These small balancing robots are fun, but I wanted to make something that more closely resembles a real Segway.
  • Big Ben Bricks – “Big Ben Bricks manufactures and sells train wheels specifically designed to build trains with LEGO. Five Train wheels are currently available in 8 colors.
  • YouTube: Akiyuky – “Lego Great Ball Contraption (GBC) in my house. my own 17 modules
  • Links for Tuesday, August 22, 2012

    • OpenBeam – An open source miniature construction system – “$10/meter, ~$1.00 per joint, 100% off-the-shelf fasteners. By eliminating specialty screws, you get the best bang for the buck!
    • Tam Labs: Behind the Scenes: Injection Molding – “Every day, we come in contact with objects that are injection molded – one of the cornerstone technologies that define our modern world. Injection molding allows designers to create extremely complicated parts with relatively low part cost after a (usually expensive) initial investment in an injection mold.

    Puget Sound (Seattle + Eastside) Outdoor Summer Movies for 2012

    Back by popular demand, I present to you the definitive list of outdoor movies for the Puget Sound area. I’ve scoured the web to find every single venue. If I have missed any, leave me a comment or send me an email ( and I’ll update the list ASAP.

    I have moved from last year’s calendar format to a more convenient and easier to generate agenda format. Click on the movie name to view the IMDB entry or the venue name to learn more about the schedule.

    Some movies are free, others require a modest payment or a donation to a specified charity. Most of the venues are family-friendly, but the Red Hook Brewery seems to attract a fairly young and very energetic crowd, so be prepared.

    So, grab a folding chair, a blanket or two, and some snacks and get out of your cave. The summer is here and it is time to have some fun.

    Saturday, June 30:
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    I’m Still Alive…

    I can’t believe I haven’t had time to write a single post so far this year. Here’s what I have been up to:

    Links for Tuesday, September 27, 2011

    • HTML 5 Rocks: How Browsers WorkThis comprehensive primer on the internal operations of WebKit and Gecko is the result of much research done by Israeli developer Tali Garsiel. Over a few years, she reviewed all the published data about browser internals and spent a lot of time reading web browser source code.
    • Kickstarter: Teaguedino: Learn To Make – “Teagueduino is an open source electronic board and interface that allows you to realize creative ideas without soldering or knowing how to code, while teaching you the ropes of programming and embedded development (like arduino).
    • GHI Electronics: FEZ Spider Starter Kit – “FEZ Spider Starter Kit is the first commercially available .NET Gadgeteer-compatible kit. it includes everything necessary for educators, hobbyists and even professionals.
    • MeetingBurner: Absurdly Fast and Easy Online Meetings – “We’ve got everything you need – blazing fast desktop sharing, one-touch recording, free phone bridges, no participant downloads, and even attendee analytics – something you won’t find anywhere else…
    • iftttt: Put the Internet to Work for You – “Put the internet to work for you by creating tasks that fit this simple structure: if this then that. Think of all the things you could do if you were able to define any task as: when something happens (this) then do something else (that).
    • JetPens – “At JetPens you’ll be amazed to find fine point writing instruments that you can’t find anywhere else in the world. In addition, we have mind-boggling colors that will beat the selection at any local office store. JetPens is a home for pen fanatics.

    Links for Sunday, August 21, 2011

    • Hypergrid Business: 11 Tips for Successful Virtual Training – “It only makes sense to use virtual world technology if you are making use of its unique affordances. That is, if you are doing things that can only be done in a virtual world. If you bring your learners into a beautiful virtual environment and then talk at them with a PowerPoint deck for an hour, everyone will leave feeling cheated.
    • HTML 5 Rocks: How Browsers Work – “This comprehensive primer on the internal operations of WebKit and Gecko is the result of much research done by Israeli developer Tali Garsiel. Over a few years, she reviewed all the published data about browser internals and spent a lot of time reading web browser source code.
    • YouTube: Metropolis II By Chris Burden (The Movie) – “A short doc about a kinetic sculpture that took four years to build.

    Links for Monday, August 15, 2011

    • MicroRAX – “MicroRAX is a light weight mini T-Slot style building system. Suitable for use on your desktop or bench top to build science, engineering, or advanced hobby and DIY projects.
    • Sparkfun Electronics: MakerBeam – “MakerBeam is a Mini-T open-source building system. Mini-T is a miniature version of T-slot. Not only is it small enough to work as a model building system, but it’s also precise and strong enough to build real machines and robots.
    • Gizmodo: Man 3D-Prints Spare Part to Avoid Huge Ripoff – “His pricey Bugaboo stroller needed a small part that the company’s service center sells for $250. Really? So our guy, took his business elsewhere. Using a company called Shapeways, he had a new stainless steel part made on a 3D printer for $25.
    • James Altucher: The 10 Commandments of the American Religion – “The American Religion is a fickle and false religion. Used to replace the ideologies we (a country of immigrants) escaped from with tenets that don’t withstand the test of time. With random high priests lurking all over the Internet, ready to pounce. Below are some of the tenets of the American Religion.

    Links for Tuesday, July 25, 2011

    • The Big Picture: Space Shuttle Era Ends With Atlantis – “When Atlantis touched down yesterday at Cape Canaveral, Fla., the high-flying era of the space shuttles came down to earth as well. After 30 years, the shuttle program, which began on April 12, 1981 with Colombia, has ended with the 135th mission.
    • dygraphs JavaScript Visualization Library – “dygraphs is an open source JavaScript library that produces produces interactive, zoomable charts of time series. It is designed to display dense data sets and enable users to explore and interpret them.
    • New York Times: 3-D Art for All: Ready to Print – “For artists, it’s kind of like, imagine, you create something that’s a 3-D model, there’s 4,500 different locations in the world where it can seep out of the Internet into the real world and blow people’s minds.
    • Ponoko Blog: From Design to Powder to Product . How Color 3d Printing Really Works – “It uses a colorful robot design as the model and gets into things like how many layers it takes to build, how thick the layers are, how long it takes to print, and even the amounts of ink and binder.