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  • Robotic Arm &ndash; Hardware

    - by Szymon Kobalczyk
    This is first in series of articles about project I've been building  in my spare time since last Summer. Actually it all began when I was researching a topic of modeling human motion kinematics in order to create gesture recognition library for Kinect. This ties heavily into motion theory of robotic manipulators so I also glanced at some designs of robotic arms. Somehow I stumbled upon this cool looking open source robotic arm: It was featured on Thingiverse and published by user jjshortcut (Jan-Jaap). Since for some time I got hooked on toying with microcontrollers, robots and other electronics, I decided to give it a try and build it myself. In this post I will describe the hardware build of the arm and in later posts I will be writing about the software to control it. Another reason to build the arm myself was the cost factor. Even small commercial robotic arms are quite expensive – products from Lynxmotion and Dagu look great but both cost around USD $300 (actually there is one cheap arm available but it looks more like a toy to me). In comparison this design is quite cheap. It uses seven hobby grade servos and even the cheapest ones should work fine. The structure is build from a set of laser cut parts connected with few metal spacers (15mm and 47mm) and lots of M3 screws. Other than that you’d only need a microcontroller board to drive the servos. So in total it comes a lot cheaper to build it yourself than buy an of the shelf robotic arm. Oh, and if you don’t like this one there are few more robotic arm projects at Thingiverse (including one by oomlout). Laser cut parts Some time ago I’ve build another robot using laser cut parts so I knew the process already. You can grab the design files in both DXF and EPS format from Thingiverse, and there are also 3D models of each part in STL. Actually the design is split into a second project for the mini servo gripper (there is also a standard servo version available but it won’t fit this arm).  I wanted to make some small adjustments, layout, and add measurements to the parts before sending it for cutting. I’ve looked at some free 2D CAD programs, and finally did all this work using QCad 3 Beta with worked great for me (I also tried LibreCAD but it didn’t work that well). All parts are cut from 4 mm thick material. Because I was worried that acrylic is too fragile and might break, I also ordered another set cut from plywood. In the end I build it from plywood because it was easier to glue (I was told acrylic requires a special glue). Btw. I found a great laser cutter service in Kraków and highly recommend it (www.ebbox.com.pl). It cost me only USD $26 for both sets ($16 acrylic + $10 plywood). Metal parts I bought all the M3 screws and nuts at local hardware store. Make sure to look for nylon lock (nyloc) nuts for the gripper because otherwise it unscrews and comes apart quickly. I couldn’t find local store with metal spacers and had to order them online (you’d need 11 x 47mm and 3 x 15mm). I think I paid less than USD $10 for all metal parts. Servos This arm uses five standards size servos to drive the arm itself, and two micro servos are used on the gripper. Author of the project used Modelcraft RS-2 Servo and Modelcraft ES-05 HT Servo. I had two Futaba S3001 servos laying around, and ordered additional TowerPro SG-5010 standard size servos and TowerPro SG90 micro servos. However it turned out that the SG90 won’t fit in the gripper so I had to replace it with a slightly smaller E-Sky EK2-0508 micro servo. Later it also turned out that Futaba servos make some strange noise while working so I swapped one with TowerPro SG-5010 which has higher torque (8kg / cm). I’ve also bought three servo extension cables. All servos cost me USD $45. Assembly The build process is not difficult but you need to think carefully about order of assembling it. You can do the base and upper arm first. Because two servos in the base are close together you need to put first with one piece of lower arm already connected before you put the second servo. Then you connect the upper arm and finally put the second piece of lower arm to hold it together. Gripper and base require some gluing so think it through too. Make sure to look closely at all the photos on Thingiverse (also other people copies) and read additional posts on jjshortcust’s blog: My mini servo grippers and completed robotic arm  Multiply the robotic arm and electronics Here is also Rob’s copy cut from aluminum My assembled arm looks like this – I think it turned out really nice: Servo controller board The last piece of hardware I needed was an electronic board that would take command from PC and drive all seven servos. I could probably use Arduino for this task, and in fact there are several Arduino servo shields available (for example from Adafruit or Renbotics).  However one problem is that most support only up to six servos, and second that their accuracy is limited by Arduino’s timer frequency. So instead I looked for dedicated servo controller and found a series of Maestro boards from Pololu. I picked the Pololu Mini Maestro 12-Channel USB Servo Controller. It has many nice features including native USB connection, high resolution pulses (0.25µs) with no jitter, built-in speed and acceleration control, and even scripting capability. Another cool feature is that besides servo control, each channel can be configured as either general input or output. So far I’m using seven channels so I still have five available to connect some sensors (for example distance sensor mounted on gripper might be useful). And last but important factor was that they have SDK in .NET – what more I could wish for! The board itself is very small – half of the size of Tic-Tac box. I picked one for about USD $35 in this store. Perhaps another good alternative would be the Phidgets Advanced Servo 8-Motor – but it is significantly more expensive at USD $87.30. The Maestro Controller Driver and Software package includes Maestro Control Center program with lets you immediately configure the board. For each servo I first figured out their move range and set the min/max limits. I played with setting the speed an acceleration values as well. Big issue for me was that there are two servos that control position of lower arm (shoulder joint), and both have to be moved at the same time. This is where the scripting feature of Pololu board turned out very helpful. I wrote a script that synchronizes position of second servo with first one – so now I only need to move one servo and other will follow automatically. This turned out tricky because I couldn’t find simple offset mapping of the move range for each servo – I had to divide it into several sub-ranges and map each individually. The scripting language is bit assembler-like but gets the job done. And there is even a runtime debugging and stack view available. Altogether I’m very happy with the Pololu Mini Maestro Servo Controller, and with this final piece I completed the build and was able to move my arm from the Meastro Control program.   The total cost of my robotic arm was: $10 laser cut parts $10 metal parts $45 servos $35 servo controller ----------------------- $100 total So here you have all the information about the hardware. In next post I’ll start talking about the software that I wrote in Microsoft Robotics Developer Studio 4. Stay tuned!

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  • mysql spitting lots of "table marked as crashed" errors

    - by Shawn
    Hi, I have a mysql server(version: 5.5.3-m3-log Source distribution ) and it keeps showing lots of 110214 3:01:48 [ERROR] /usr/local/mysql/libexec/mysqld: Table './mydb/tablename' is marked as crashed and should be repaired 110214 3:01:48 [Warning] Checking table: './mydb/tablename' I'm wondering what can be the possible casues and how to fix it. Here is a full list mysql configuration : connect_errors = 6000 table_cache = 614 external-locking = FALSE max_allowed_packet = 32M sort_buffer_size = 2G max_length_for_sort_data = 2G join_buffer_size = 256M thread_cache_size = 300 #thread_concurrency = 8 query_cache_size = 512M query_cache_limit = 2M query_cache_min_res_unit = 2k default-storage-engine = MyISAM thread_stack = 192K transaction_isolation = READ-COMMITTED tmp_table_size = 246M max_heap_table_size = 246M long_query_time = 3 log-slave-updates = 1 log-bin = /data/mysql/3306/binlog/binlog binlog_cache_size = 4M binlog_format = MIXED max_binlog_cache_size = 8M max_binlog_si ze = 1G relay-log-index = /data/mysql/3306/relaylog/relaylog relay-log-info-file = /data/mysql/3306/relaylog/relaylog relay-log = /data/mysql/3306/relaylog/relaylog expire_logs_days = 30 key_buffer_size = 1G read_buffer_size = 1M read_rnd_buffer_size = 16M bulk_insert_buffer_size = 64M myisam_sort_buffer_size = 2G myisam_max_sort_file_size = 5G myisam_repair_threads = 1 max_binlog_size = 1G interactive_timeout = 64 wait_timeout = 64 skip-name-resolve slave-skip-errors = 1032,1062,126,1114,1146,1048,1396 The box is running on centos-5.5. Thanks for your help.

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  • Available Instance types for marketplace ami's

    - by Christian
    I based my autoscaling AMI's on the Turnkey Linux nginx AMI from the marketplace. I am now unable to select any of the newer generation instance types; for instance, my autoscaling uses m3.large type but I'd really like it to use the c3.xlarge type but every time I try to create a c3.xlarge instance with my AMI I get errors; The instance configuration for this AWS Marketplace product is not supported. My question is; Can I override this? I'm not using TKL support or any of their services, just the AMI. If I can't override it, do I have any other options besides creating a brand new AMI from scratch to use?

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  • BixData or Zabbix?

    - by Arafat
    Hi all, I've been using Ganglia to monitor my single Mac OSX server which runs Apache and MySQL. I'm ok with it. Now we are upgrading our servers, 6 IBM X3650 M3 and 2 Fujitsu servers. 2 IBM for Apache cluster and 4 IBM for MySQL NDB Cluster. The other two servers are for Load balancers. All servers are going to run Debian Lenny 5 on it. Now I need to decide on which monitoring tool I should go for. I found that BixData and Zabbix does an excellent job than Ganglia, in terms of sensors and reporting. Have anyone tried the above two tools? And which tool would you suggest me? For Debian. As I'm writing this, I'm installing BixData to try.... Thanks in advance.

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  • DC Comics Identifies Krypton on the Star Map

    - by Jason Fitzpatrick
    This week Action Comics Superman #14 hits the stands and DC comics reveals the actual location of Kyrpton, delivered by none other than beloved astrophysicist Neil Tyson. Phil Plait at Bad Astronomy reports on the resolution of fans’ long standing curiosity about the location of Krypton: Well, that’s about to change. DC comics is releasing a new book this week – Action Comics Superman #14 – that finally reveals the answer to this stellar question. And they picked a special guest to reveal it: my old friend Neil Tyson. Actually, Neil did more than just appear in the comic: he was approached by DC to find a good star to fit the story. Red supergiants don’t work; they explode as supernovae when they are too young to have an advanced civilization rise on any orbiting planets. Red giants aren’t a great fit either; they can be old, but none is at the right distance to match the storyline. It would have to be a red dwarf: there are lots of them, they can be very old, and some are close enough to fit the plot. I won’t keep you in suspense: the star is LHS 2520, a red dwarf in the southern constellation of Corvus (at the center of the picture here). It’s an M3.5 dwarf, meaning it has about a quarter of the Sun’s mass, a third its diameter, roughly half the Sun’s temperature, and a luminosity of a mere 1% of our Sun’s. It’s only 27 light years away – very close on the scale of the galaxy – but such a dim bulb you need a telescope to see it at all (for any astronomers out there, the coordinates are RA: 12h 10m 5.77s, Dec: -15° 4m 17.9 s). 6 Ways Windows 8 Is More Secure Than Windows 7 HTG Explains: Why It’s Good That Your Computer’s RAM Is Full 10 Awesome Improvements For Desktop Users in Windows 8

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  • DON'T MISS: Live Webcast - Nimble SmartStack for Oracle with Cisco UCS (Nov 12)

    - by Zeynep Koch
    You are invited to the live webcast with Nimble Storage, Oracle and Cisco where we will talk about the new SmartStack solution from Nimble Storage that features Oracle Linux, Oracle VM and Cisco UCS products. In this webinar, you will learn how Nimble Storage SmartStack with Oracle and Cisco provides a converged infrastructure for Oracle Database environments with Oracle Linux and Oracle VM. SmartStack, built on best-of-breed components, delivers the performance and reliability needed for deploying Oracle on a single symmetric multiprocessing (SMP) server or Oracle Real Application Clusters (RAC) on multiple nodes.  When : Tuesday, November 12, 2013, 11:00 AM Pacific Time Panelists: Michele Resta, Director of Linux and Virtualization Alliances, Oracle John McAbel, Senior Product Manager, Cisco Ibby Rahmani, Solutions Marketing, Nimble Storage SmartStack™solutions provide pre-validated reference architectures that speed deployments and minimize risk.      The pre-validated converged infrastructure is based on an Oracle Validated Configuration that includes Oracle Database and Oracle Linux with the Unbreakable Enterprise Kernel.     The solution components include a Nimble Storage CS-Series array, two Cisco UCS B200 M3 blade servers, Oracle Linux 6 Update 4 with the Unbreakable Enterprise Kernel, and Oracle Database 11g Release 2 or Oracle Database 12c Release 1.     The Nimble Storage CS-Series is certified with Oracle VM 3.2 providing an even more flexible solution leveraging virtualization for functions such as test and development by delivering excellent random I/O performance in Oracle VM environments. Register today 

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  • Product Update Bulletin: Oracle Solaris Cluster October 2013

    - by uwes
    Announcing new qualifications and general news for the Oracle Solaris Cluster product. Hardware Qualifications Sun Server X4-2 and X4-2L servers, Sun Blade X4-2B server module with Oracle Solaris Cluster 3.3 Sun Storage 16 Gb Fibre Channel ExpressModule Universal HBA, Emulex Oracle Dual Port QDR InfiniBand Adapter M3 Software Qualifications Oracle Database 12c Real Application Cluster with Oracle Solaris Cluster 4.1 Oracle Database 11.2.0.4 single instance and RAC with Oracle Solaris Cluster 4.1 Oracle VM server for SPARC 3.1 SAP Netweaver with new kernel versions ZFS Storage Appliance Kit version 2011.1.7.0 and 2013.1.0.0 Application monitoring in Oracle VM for SPARC failover guest domain Storage Partner Update Oracle Solaris Cluster 3.3 3/13 with the HDS Enterprise Storage arrays EMC SRDF for Oracle database 12c RAC in Oracle Solaris Cluster 4.1 geo cluster configuration Oracle Solaris Cluster References Korea Enterprise Data, HDFC Securities, Dealis Fund Operations Web Updates New blog entry: Oracle Solaris 10 Brand Zone cluster Solaris Application Engineering website now includes Oracle Solaris Cluster application support information Please read the Oracle Solaris Cluster Product Update Bulletin on Oracle HW TRC for more details. (If you are not registered on Oracle HW TRC, click here ... and follow the instructions..) _____________________________________________________________________ For More Information Go To:Oracle.com Oracle Solaris Cluster page Oracle Technology Network Oracle Solaris Cluster pageOracle Solaris Cluster mos communityPartner web Oracle Solaris Cluster pageOracle Solaris Cluster Blog Solaris.us.oracle.com page

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  • CodePlex Daily Summary for Thursday, February 10, 2011

    CodePlex Daily Summary for Thursday, February 10, 2011Popular ReleasesSnoop, the WPF Spy Utility: Snoop 2.6.1: This release is a bug fixing release. Most importantly, issues have been seen around WPF 4.0 applications not always showing up in the app chooser. Hopefully, they are fixed now. I thought this issue warranted a minor release since more and more people are going WPF 4.0 and I don't want anyone to have any problems. Dan Hanan also contributes again with several usability features. Thanks Dan! Happy Snooping! Work Item Description 5149 Dan Hanan: You can now use the mouse wheel t...RIBA - Rich Internet Business Application for Silverlight: Preview of MVVM Framework Source + Tutorials: This is a first public release of the MVVM Framework which is part of the final RIBA application. The complete RIBA example LOB application has yet to be published. Further Documentation on the MVVM part can be found on the Blog, http://www.SilverlightBlog.Net and in the downloadable source ( mvvm/doc/ ). Please post all issues and suggestions in the issue tracker.SharePoint Learning Kit: 1.5: SharePoint Learning Kit 1.5 has the following new functionality: *Support for SharePoint 2010 *E-Learning Actions can be localised *Two New Document Library Edit Options *Automatically add the Assignment List Web Part to the Web Part Gallery *Various Bug Fixes for the Drop Box There are 2 downloads for this release SLK-1.5-2010.zip for SharePoint 2010 SLK-1.5-2007.zip for SharePoint 2007 (WSS3 & MOSS 2007)Facebook C# SDK: 5.0.3 (BETA): This is fourth BETA release of the version 5 branch of the Facebook C# SDK. Remember this is a BETA build. Some things may change or not work exactly as planned. We are absolutely looking for feedback on this release to help us improve the final 5.X.X release. For more information about this release see the following blog posts: Facebook C# SDK - Writing your first Facebook Application Facebook C# SDK v5 Beta Internals Facebook C# SDK V5.0.0 (BETA) Released We have spend time trying ...NodeXL: Network Overview, Discovery and Exploration for Excel: NodeXL Excel Template, version 1.0.1.161: The NodeXL Excel template displays a network graph using edge and vertex lists stored in an Excel 2007 or Excel 2010 workbook. What's NewThis release adds a new Twitter List network importer, makes some minor feature improvements, and fixes a few bugs. See the Complete NodeXL Release History for details. Installation StepsFollow these steps to install and use the template: Download the Zip file. Unzip it into any folder. Use WinZip or a similar program, or just right-click the Zip file...WatchersNET.TagCloud: WatchersNET.TagCloud 01.09.03: Whats NewAdded New Skin TagTastic http://www.watchersnet.de/Portals/0/screenshots/dnn/TagCloud-TagTastic-Skin.jpg Added New Skin RoundedButton http://www.watchersnet.de/Portals/0/screenshots/dnn/TagCloud-RoundedButton-Skin.jpg changes Tag Count fixed on Tag Source Referrals Fixed Tag Count when multiple Tag Sources are usedFinestra Virtual Desktops: 1.1: This release adds a few more performance and graphical enhancements to 1.0. Switching desktops is now about as fast as you can blink. Desktop switching optimizations New welcome wizard for Vista/7 Fixed a few minor bugs Added a few more options to the options dialog (including ability to disable the taskbar switching)WCF Data Services Toolkit: WCF Data Services Toolkit: The source code and binary releases of the WCF Data Services Toolkit. For simplicity, the source code download doesn't include any of the MSTest files. If you want those, you can pull the code down via MercurialyoutubeFisher: youtubeFisher 3.0 [beta]: What's new: Video capturing improved Supports YouTube's new layout (january 2011) Internal refactoringNearforums - ASP.NET MVC forum engine: Nearforums v5.0: Version 5.0 of the ASP.NET MVC Forum Engine, containing the following improvements: .NET 4.0 as target framework using ASP.NET MVC 3. All views migrated to Razor for cleaner markup. Alternate template (Layout file) for mobile devices 4 Bug Fixes since Version 4.1 Visit the project Roadmap for more details.fuv: 1.0 release, codename Chopper Joe: features: search/replace :o to open file :s to save file :q to quitASP.NET MVC Project Awesome, jQuery Ajax helpers (controls): 1.7: A rich set of helpers (controls) that you can use to build highly responsive and interactive Ajax-enabled Web applications. These helpers include Autocomplete, AjaxDropdown, Lookup, Confirm Dialog, Popup Form, Popup and Pager html generation optimized new features for the lookup (add additional search data ) live demo went aeroEnhSim: EnhSim 2.3.6 BETA: 2.3.6 BETAThis release supports WoW patch 4.06 at level 85 To use this release, you must have the Microsoft Visual C++ 2010 Redistributable Package installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=A7B7A05E-6DE6-4D3A-A423-37BF0912DB84 To use the GUI you must have the .NET 4.0 Framework installed. This can be downloaded from http://www.microsoft.com/downloads/en/details.aspx?FamilyID=9cfb2d51-5ff4-4491-b0e5-b386f32c0992 Changes since 2.3.0 ...TestApi - a library of Test APIs: TestApi v0.6: TestApi v0.6 comes with the following changes: TestApi code development has been moved to Codeplex: Moved TestApi soluton to VS 2010; Moved all source code to Codeplex. All development work is done there now. Fault Injection API: Integrated the unmanaged FaultInjectionEngine.dll COM component in the build; Cleaned up FaultInjectionEngine.dll to build at warning level 4; Implemented “FaultScope” which allows for in-process fault injection; Added automation scripts & sample program; ...AutoLoL: AutoLoL v1.5.5: AutoChat now allows up to 6 items. Items with nr. 7-0 will be removed! News page url's are now opened in the default browser Added a context menu to the system tray icon (thanks to Alex Banagos) AutoChat now allows configuring the Chat Keys and the Modifier Key The recent files list now supports compact and full mode Fix: Swapped mouse buttons are now properly detected Fix: Sometimes the Play button was pressed while still greyed out Champion: Karma Note: You can also run the u...mojoPortal: 2.3.6.2: see release notes on mojoportal.com http://www.mojoportal.com/mojoportal-2362-released.aspx Note that we have separate deployment packages for .NET 3.5 and .NET 4.0 The deployment package downloads on this page are pre-compiled and ready for production deployment, they contain no C# source code. To download the source code see the Source Code Tab I recommend getting the latest source code using TortoiseHG, you can get the source code corresponding to this release here.ReSharper Settings Manager: RSM v4.0 (For ReSharper 5.1): Donate ChangesChanged the mechanism of locating shared settings files (discussion, issue): You can now create a set of "global" settings files and configure how R# settings will get loaded (settings inheritance and overrides). All solutions located at the same folder and\or subfolders where the global settings file is located will load that file automatically. Improved "Manage Settings" dialog to support new settings sharing features. Bug fixes: 228048 16590 16584Rawr: Rawr 4.0.19 Beta: Rawr is now web-based. The link to use Rawr4 is: http://elitistjerks.com/rawr.phpThis is the Cataclysm Beta Release. More details can be found at the following link http://rawr.codeplex.com/Thread/View.aspx?ThreadId=237262 As of the 4.0.16 release, you can now also begin using the new Downloadable WPF version of Rawr!This is a pre-alpha release of the WPF version, there are likely to be a lot of issues. If you have a problem, please follow the Posting Guidelines and put it into the Issue Trac...IronRuby: 1.1.2: IronRuby 1.1.2 is a servicing release that keeps on improving compatibility with Ruby 1.9.2 and includes IronRuby integration to Visual Studio 2010. We decided to drop 1.8.6 compatibility mode in all post-1.0 releases. We recommend using IronRuby 1.0 if you need 1.8.6 compatibility. In this release we fixed several major issues: - problems that blocked Gem installation in certain cases - regex syntax: the parser was replaced with a new one that is much more compatible with Ruby 1.9.2 - cras...MVVM Light Toolkit: MVVM Light Toolkit V3 SP1 (4): There was a small issue with the previous release that caused errors when installing the templates in VS10 Express. This release corrects the error. Only use this if you encountered issues when installing the previous release. No changes in the binaries.New ProjectsAJAX Map DataConnector: AJAX Map DataConnector is an Open Source + Open Data project focused on connecting the power of Bing Maps AJAX Control, Version 7.0 to the spatial query capabilities of SQL Server 2008. The examples provided here represent a starting point, showing some ways to harness SQL ServerASP.NET Mvc Cdn Management: Cdn Management loads different resources (like styles, scripts etc) from configuration file. It reads resource location (url) from a configuration file and renders it into a page.Azure Content Provider for Telerik File Browser: Windows Azure Storage FileBrowserContentProvider makes it easier for web developers to Connect the Telerik RadFileExplorer control to the Windows Azure Storage. It's developed in VB.NET. BeerForge: BeerForge is an open source application for the home brewer to ease the creation of beer recipes and provide handy calculation tools.budget-manage: ???????????,??????????。Command Line Parsing, C++ and C#: This is a simple project that does command line arguments parsing. C# and C++ projects are supplied, together with unit tests.DeleteAfterRunning: Application allowing you to convert any file to self-deleting executable. You have a picture, audio file or a document you want to share, but don’t want anyone to keep a copy? Simply create a self-deleting package using DeleteAfterRunning that can be opened only once.DotNetNuke Contest: A module for contest voting in DotNetNuke.Foundry: Experiments in language design and data modeling.GenAttributeLib: Libreria per la gestione di attributi generici di un oggetto.Graduation Project Management System: This is our graduation project. It uses Asp.net Mvc 3,Jquery,Ado.net Entity Framework,and so on. by Veiller hu,ZSPiKnow - A tiny wiki: iKnow is a (really) tiny wiki. Up and running in 5 minutes, easy to customize and of course open source and free to use.internationalOffice: This will contain all the code and bugs for a student project.Iroo Package Manager: Orchard package management UI (auto-update)Iroo Version Manager: Version management for Content ItemsJavApi: JavApi provides a collection of .NET classes in the form of the Java API. It thus allows you to use an identical API to develop for both platforms.jsfcore @ Personal Repository: This project contains s wmultiple sampleith various snippets and projects from blog posts, user group talks, and conference sessions. M3 CMS: M3 Cms is a lightweight content management system built on the ASP.NET MVC 4.0 framework. Uses SQLCE database and nHibernate+ActiveRecord framework.Market-Basket Synthetic Data Generator: An open-source C# market-basket synthetic data generator, capable of creating transactions, sequences and taxonomies, based on the IBM Quest version. Written to address the maintainability and portability problems of the original, feedback, fixes and extensions are encouraged!MicroLinq : Libraries for .NET Micro Framework: MicroLinq is a project to bring a small subset of the power of Linq to the .NET Micro Framework. Over time (hours) the project has expanded to include other helpful libraries and proof of concept code others might find useful.MJPEG Decoder for WPF, WinForms, WP7 and XNA: Library to decode MJPEG streams for Silverlight, Windows Phone 7, XNA 4.0, WinForms, and WPF. Sample code showing usage is included with the distribution. For more information, see the full article at Coding4Fun.modSIC: Modulo's Open Distributed SCAP Infrastructure Collector, or modSIC, makes it easier for security analysts to scan an environment vulnerabilities/compliance based on OVAL-Definitions file. It's an open source service specializing in distributed assessment on a network.MoneyTracker: MoneyTracker is used to keep track of transactions, create your own categories and view reports.PixelsCMS: ASP.NET CMS, PixelsCMS, MVC 2rainTwitter: A twitter module/skin for the rainmeter Windows desktop customization platform. (IN DEVELOPMENT)Reactor.ServiceBus: Reactor Service Bus is a light weight .Net service bus built upon the Apache NMS abstraction library. It provides a slim and easy to use interface that supports all the underlying brokers NMS supports.RsMenu: RsMenu es un MenuStrip que permite tener los Informes de Reporting Services en un elegante menu en nuestra aplicacion winform.Top Protocols Expert for Network Monitor: A Network Monitor Expert which shows you the usage frequency of protocols in a trace. This expert plugs into the Network Monitor UI so you run it directly from the Expert menu. trollr.net - remotely configure & control your .Net applications: trollr.net provides a remote configuration and control network to the .Net apps in your enterprise. App configuration becomes centralised and live/runtime changes are pushed to each application - no restart required to pick up the change. Cache control commands can also be sent!Tweet 4 ME: Tweet 4 ME is a Java Micro Edition (MIDP 2.0 CLDC 1.0) based Twitter client built with a custom GUI framework. The application is part of a college project.UntitledGameProject: Untitled Game Project, Logic and Design for eventual port to Android, IOS and WP7web-framework: web??????????。C#??,framework2.0,???????。WebMatrix helpers from old school teachings: Remember when the web was fun? Well it's back with WebMatrix. We are providing just a few minor helper extensions with a sample app that should help Neo on his quest to be one with the Matrix.

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  • Custom Icon for Marker Clusterer

    - by Nyxynyx
    I am using Marker Clusterer library for Google Maps API V3. Now that I have the clusterer working, I want to change the default icon to a custom one. Prorblem: When I try to set the style property of the marker clusterer, the default icon still appears. Where did I go wrong? JS Code // Marker Clusterer var styles = {styles: [{ height: 53, url: "http://localhost/mywebsite/images/template/markers/cluster.png", width: 53 }, { height: 56, url: "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m2.png", width: 56 }, { height: 66, url: "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m3.png", width: 66 }, { height: 78, url: "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m4.png", width: 78 }, { height: 90, url: "http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclusterer/images/m5.png", width: 90 }]}; var mcOptions = {gridSize: 50, maxZoom: 15, styles: styles[styles]}; mc = new MarkerClusterer(map, [], mcOptions);

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  • GNU ld removes section

    - by Jonatan
    I'm writing a boot script for an ARM-Cortex M3 based device. If I compile the assembler boot script and the C application code and then combine the object files and transfer them to my device everything works. However, if I use ar to create an archive (libboot.a) and combine that archive with the C application there is a problem: I've put the boot code in a section: .section .boot, "ax" .global _start _start: .word 0x10000800 /* Initial stack pointer (FIXME!) */ .word start .word nmi_handler .word hard_fault_handler ... etc ... I've found that ld strips this from the final binary (the section "boot" is not available). This is quite natural as there is no dependency on it that ld knows about, but it causes the device to not boot correctly. So my question is: what is the best way to force this code to be included?

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  • Pulling data from a text file to generate a report

    - by Edmond
    Have a program in Access, using VBA. I need to come up with an If statement to pull data from a text file. The data is a list of procedures and prices. I have to pull the prices from the text file to show in a report how much each procedure costs. ID PID M1 M2 M3 Total 1 11120390(procedure) 2 180(price) 360 180 540 1080(total Price) 3 2 1 3 6(Units sold) 4 5 200(Price) 200 600 800 1600(total price) 6 1 3 4 8(Units Sold) 7 11120390(procedure) The table in the text file is setup like this and I need to Pull the procedure number and the price of each procedure from the text file.

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  • JAXB Customizations and List<Object>

    - by DaUltimateTrooper
    Hi everybody. I used JAXB to create some classes from an XSD. The result was not quite what I expected and most probably it can be customized. It created a generic list instead of 3 different lists. Can this be corrected somehow? @XmlElements({ @XmlElement(name = "M1", type = M1_Type.class), @XmlElement(name = "M2", type = M2_Type.class), @XmlElement(name = "M3", type = M3_Type.class) }) protected List<Object> m1Orm2OrM3; Is there a customization to fix this?

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  • How to get or Kill all instances from certain class?

    - by Ehab Sutan
    How can I get all instances from a certain class or kill all instances of certain class? For Example, I've a Class MyClass which I intantiate three times as m1, m2 and m3. Is there a way to get or kill all these instances? more clarification : when I've a "settings form" class. When the user click Settings button the application makes instance from this class. When he clicks the same button again it makes new instance. I want it show the 1st instance only and not making new instance

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  • How to stop jQuery from returning tabs and spaces from formated code on .html() .val() .text() etc.

    - by brandonjp
    I've got an html table: <table><tr> <td>M1</td> <td>M2</td> <td>M3</td> <td>M4</td> </tr></table> and a simple jQ script: $('td').click(function(){ alert( $(this).html() ); }); That works just fine.... but in the real world, I've got several hundred table cells and the code is formatted improperly in places because of several people editing the page. So if the html is: <td> M1 </td> then the alert() is giving me all the tabs and returns and spaces: What can I do to get ONLY the text without the tabs and spaces? I've tried .html(), .val(), .text() to no avail. Thanks!

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  • on coding style

    - by user12607414
    I vastly prefer coding to discussing coding style, just as I would prefer to write poetry instead of talking about how it should be written. Sometimes the topic cannot be put off, either because some individual coder is messing up a shared code base and needs to be corrected, or (worse) because some officious soul has decided, "what we really need around here are some strongly enforced style rules!" Neither is the case at the moment, and yet I will venture a post on the subject. The following are not rules, but suggested etiquette. The idea is to allow a coherent style of coding to flourish safely and sanely, as a humane, inductive, social process. Maxim M1: Observe, respect, and imitate the largest-scale precedents available. (Preserve styles of whitespace, capitalization, punctuation, abbreviation, name choice, code block size, factorization, type of comments, class organization, file naming, etc., etc., etc.) Maxim M2: Don't add weight to small-scale variations. (Realize that Maxim M1 has been broken many times, but don't take that as license to create further irregularities.) Maxim M3: Listen to and rely on your reviewers to help you perceive your own coding quirks. (When you review, help the coder do this.) Maxim M4: When you touch some code, try to leave it more readable than you found it. (When you review such changes, thank the coder for the cleanup. When you plan changes, plan for cleanups.) On the Hotspot project, which is almost 1.5 decades old, we have often practiced and benefited from such etiquette. The process is, and should be, inductive, not prescriptive. An ounce of neighborliness is better than a pound of police-work. Reality check: If you actually look at (or live in) the Hotspot code base, you will find we have accumulated many annoying irregularities in our source base. I suppose this is the normal condition of a lived-in space. Unless you want to spend all your time polishing and tidying, you can't live without some smudge and clutter, can you? Final digression: Grammars and dictionaries and other prescriptive rule books are sometimes useful, but we humans learn and maintain our language by example not grammar. The same applies to style rules. Actually, I think the process of maintaining a clean and pleasant working code base is an instance of a community maintaining its common linguistic identity. BTW, I've been reading and listening to John McWhorter lately with great pleasure. (If you end with a digression, is it a tail-digression?)

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  • The value of money

    - by ambreesh
    A dictionary definition of money is "any circulating medium of exchange, including coins, paper money, anddemand deposits". If you ask an economist for a definition of money, you will be introduced to terms like M1, M2, M3, all of which denote tangible assets - currency, and anything that is liquid enough to be used as currency; checks, stamps and now mobile minutes being examples. The macroeconomic theory of money is fascinating - the effect of money supply on exchange rates and interest rates, the concept of the "money multiplier" (if I deposit $10 into a bank, the bank will likely loan $8 of it to someone else, who will then give it to someone else in exchange for goods and services, who will then likely deposit it again, which will result in the bank loaning it again and so on - making that $10 of money supply worth a lot more ($10+$8+$x+...)).  But all this depends on money supply - in other words, money that is printed by the mint. The Treasury Department spends a lot of time figuring out how much money to print, there is lot being written on QE2 now-a-days, which is intended to increase the money supply. Money is used to purchase goods and services, and yes it is saved too but that is so one can purchase goods and services later. Completely unrelated, there is a sea change occurring in the web world, dominated by, I believe, Facebook. With 500M active users and growing, FB has the ability to introduce a "money supply" which is completely unrelated to today's "money". Using today's money, a FB user can buy a certain number of FB$s, and then use the FB$s within FB to purchase goods and services - with the money multiplier kicking in. I remember talking with a colleague about this a few years ago, the true way to monetize the web is to introduce an alternative system to the existing, and FB has the ability to do just that. There is enough momentum, enough mass for FB to start to monetize its user base. And completely screw up the economists at the Treasury, not to mention disintermediating the banks completely. The only other ubiquitous asset is mobile minutes. People exchanging mobile minutes for tangible goods and services happens today, the big difference however is the demographic. While Safaricom offers this ability in Kenya today, FB has the 15-40 year middle class user as their user. And the next generation is growing up with FB as a standard channel for communicating with their peers. Virtual flowers when going in for the kill? If your target is an avid FB user, why not? It certainly is a lot more green - no pun intended!

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  • NGINX MIME TYPE

    - by justanotherprogrammer
    I have my nginx conf file so that when ever a mobile device visits my site the url gets rewritten to m.mysite.com I did it by adding the following set $mobile_rewrite do_not_perform; if ($http_user_agent ~* "android.+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino") { set $mobile_rewrite perform; } if ($http_user_agent ~* "^(1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|e\-|e\/|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(di|rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|xda(\-|2|g)|yas\-|your|zeto|zte\-)") { set $mobile_rewrite perform; } if ($mobile_rewrite = perform) { rewrite ^ http://m.mywebsite.com redirect; break; } I got it from http://detectmobilebrowsers.com/ IT WORKS.But none of my images/js/css files load only the HTML. And I know its the chunk of code I mentioned above because when I remove it and visit m.mywebsite.com from my mobile device everything loads up.So this bit of code does SOMETHING to my css/img/js MIME TYPES. I found this out through the the console error messages from safari with the user agent set to iphone. text.cssResource interpreted as stylesheet but transferred with MIME type text/html. 960_16_col.cssResource interpreted as stylesheet but transferred with MIME type text/html. design.cssResource interpreted as stylesheet but transferred with MIME type text/html. navigation_menu.cssResource interpreted as stylesheet but transferred with MIME type text/html. reset.cssResource interpreted as stylesheet but transferred with MIME type text/html. slide_down_panel.cssResource interpreted as stylesheet but transferred with MIME type text/html. myrealtorpage_view.cssResource interpreted as stylesheet but transferred with MIME type text/html. head.jsResource interpreted as script but transferred with MIME type text/html. head.js:1SyntaxError: Parse error isaac:208ReferenceError: Can't find variable: head mrp_home_icon.pngResource interpreted as image but transferred with MIME type text/html. M_1_L_289_I_499_default_thumb.jpgResource interpreted as image but transferred with MIME type text/html. M_1_L_290_I_500_default_thumb.jpgResource interpreted as image but transferred with MIME type text/html. M_1_default.jpgResource interpreted as image but transferred with MIME type text/html. default_listing_image.pngResource interpreted as image but transferred with MIME type text/html. here is my whole nginx conf file just incase... worker_processes 1; events { worker_connections 1024; } http { include mime.types; include /etc/nginx/conf/fastcgi.conf; default_type application/octet-stream; sendfile on; keepalive_timeout 65; #server1 server { listen 80; server_name mywebsite.com www.mywebsite.com ; index index.html index.htm index.php; root /srv/http/mywebsite.com/public; access_log /srv/http/mywebsite.com/logs/access.log; error_log /srv/http/mywebsite.com/logs/error.log; #---------------- For CodeIgniter ----------------# # canonicalize codeigniter url end points # if your default controller is something other than "welcome" you should change the following if ($request_uri ~* ^(/main(/index)?|/index(.php)?)/?$) { rewrite ^(.*)$ / permanent; } # removes trailing "index" from all controllers if ($request_uri ~* index/?$) { rewrite ^/(.*)/index/?$ /$1 permanent; } # removes trailing slashes (prevents SEO duplicate content issues) if (!-d $request_filename) { rewrite ^/(.+)/$ /$1 permanent; } # unless the request is for a valid file (image, js, css, etc.), send to bootstrap if (!-e $request_filename) { rewrite ^/(.*)$ /index.php?/$1 last; break; } #---------------------------------------------------# #--------------- For Mobile Devices ----------------# set $mobile_rewrite do_not_perform; if ($http_user_agent ~* "android.+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino") { set $mobile_rewrite perform; } if ($http_user_agent ~* "^(1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|e\-|e\/|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(di|rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|xda(\-|2|g)|yas\-|your|zeto|zte\-)") { set $mobile_rewrite perform; } if ($mobile_rewrite = perform) { rewrite ^ http://m.mywebsite.com redirect; #rewrite ^(.*)$ $scheme://mywebsite.com/mobile/$1; #return 301 http://m.mywebsite.com; #break; } #---------------------------------------------------# location / { index index.html index.htm index.php; } error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } location ~ \.php$ { try_files $uri =404; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param PATH_INFO $fastcgi_script_name; include /etc/nginx/conf/fastcgi_params; } }#sever1 #server 2 server { listen 80; server_name m.mywebsite.com; index index.html index.htm index.php; root /srv/http/mywebsite.com/public; access_log /srv/http/mywebsite.com/logs/access.log; error_log /srv/http/mywebsite.com/logs/error.log; #---------------- For CodeIgniter ----------------# # canonicalize codeigniter url end points # if your default controller is something other than "welcome" you should change the following if ($request_uri ~* ^(/main(/index)?|/index(.php)?)/?$) { rewrite ^(.*)$ / permanent; } # removes trailing "index" from all controllers if ($request_uri ~* index/?$) { rewrite ^/(.*)/index/?$ /$1 permanent; } # removes trailing slashes (prevents SEO duplicate content issues) if (!-d $request_filename) { rewrite ^/(.+)/$ /$1 permanent; } # unless the request is for a valid file (image, js, css, etc.), send to bootstrap if (!-e $request_filename) { rewrite ^/(.*)$ /index.php?/$1 last; break; } #---------------------------------------------------# location / { index index.html index.htm index.php; } error_page 500 502 503 504 /50x.html; location = /50x.html { root html; } location ~ \.php$ { try_files $uri =404; fastcgi_pass 127.0.0.1:9000; fastcgi_index index.php; fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name; fastcgi_param PATH_INFO $fastcgi_script_name; include /etc/nginx/conf/fastcgi_params; } }#sever2 }#http I could just detect the mobile browsers with php or javascript but i need to make the detection at the server level so that i can use the 'm' in m.mywebsite.com as a flag in my controllers (codeigniter) to serve up the right view. I hope someone can help me! Thank you!

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  • Mysql ndb cluster - node restart.

    - by Arafat
    Hi guys! I just setup a mysql cluster on a fairly decent baby (IBM x3650 M3) with 24GB memory, xeon 6core, SAS 6Gbps HDD. Running Debian Lenny 5. 64bits. Ndb version is 7.1.9a. Our database size on MyISAM is around 3.2 GB. Ndb_size estimation is 58GB for ndbengine. A little info about my database is as follows. 150 common tables for global purpose. 130 tables for each clients. So it goes like this, 130 x 115(clients) = 14950 tables. Is it normal or usual to have 14000 tables on one database? The reasons why we did this was, Easy maintenance and per client based customization. Now, the problem is, ndb cluster can only support, 20320 tables. But it can support 5,000,000,000 rows in one table if I'm not wrong. My real head ache is my cluster data node takes less than two minutes to startup with out any data. But as soon as convert my tables into ndb, that too only 2000 tables, data node takes at least 30 to 40 mins to start up. Is it normal? If I convertt all my tables into ndb, will it take even longer? Or let's say if consolidate my 14000 table's data into one, which is 130 tables, will it help? Or is there anything idiotically wrong which I'm doing? I'll attach my config.ini file soon. here's the simple overview of my config Datamemory = 14G Indexmemory = 3GB Maxnooftable = 14000 Maxnoofattributes = 78000 I'm just testing these values with 2000 tables first. Please advise, how to increase the start up speed. Please point out where I'm going wrong. Thanks in advance guys!

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  • using gmail as email relay for sendmail

    - by Nikita
    I used to be able to send emails using a gmail account & sendmail configured using one of the guides on the Internet, for example: http://appgirl.net/blog/configuring-sendmail-to-relay-through-gmail-smtp/ This is a small server and I've recently moved it to a different house. And sendmail has stop working. The only thing different in the network setup is a new router. What is happening: In the log files, I see the following error: ...stat=Deferred: smtp.gmail.com: No route to host When I run from the command line: strace sendmail -f A -t B -u "Subject" -m "Message" -tls=yes ssl=yes -s smtp.gmail.com:587 -xu A -xp XYZ It hangs on this call: recvfrom(3, "m0\201\203\0\1\0\0\0\0\0\0\4ares\3lan\0\0\34\0\1", 8192, 0, {sa_family=AF_INET, sin_port=htons(53), sin_addr=inet_addr("192.168.1.254")}, [16]) = 26 close(3) = 0 time(NULL) = 1339997943 open("/etc/localtime", O_RDONLY) = 3 fstat64(3, {st_mode=S_IFREG|0644, st_size=3477, ...}) = 0 fstat64(3, {st_mode=S_IFREG|0644, st_size=3477, ...}) = 0 mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0xb76ff000 read(3, "TZif2\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\4\0\0\0\4\0\0\0\0"..., 4096) = 3477 _llseek(3, -24, [3453], SEEK_CUR) = 0 read(3, "\nEST5EDT,M3.2.0,M11.1.0\n", 4096) = 24 close(3) = 0 munmap(0xb76ff000, 4096) = 0 socket(PF_FILE, SOCK_DGRAM|SOCK_CLOEXEC, 0) = 3 connect(3, {sa_family=AF_FILE, path="/dev/log"}, 110) = 0 send(3, "<18>Jun 18 01:39:03 sendmail[268"..., 96, MSG_NOSIGNAL) = 96 nanosleep({60, 0}, So it looks like at some point it tries to resolve the DNS name, but I don't have anything running on 53, so it dies out and then just hangs. The other interesting thing is that msmtp works just fine on the same server. Update: ares in strace output is actually the name of my server, but .254 IP address is the address of the router. Could anyone tell me why this is happening or what further steps can I take to investigate the issue? Thanks!

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  • At the Java DEMOgrounds - Oracle Java ME Embedded Enables the “Internet of Things”

    - by Janice J. Heiss
    I caught up with Oracle’s Robert Barnes, Senior Director, Java Product Management, who was demonstrating a new product from Oracle’s Java Platform, Micro Edition (Java ME) product portfolio, Oracle Java ME Embedded 3.2, a complete client Java runtime optimized for microcontrollers and other resource-constrained devices. Oracle’s Java ME Embedded 3.2 is a Java ME runtime based on CLDC 1.1 (JSR-139) and IMP-NG (JSR-228).“What we are showing here is the Java ME Embedded 3.2 that we announced last week,” explained Barnes. “It’s the start of the 'Internet of Things,’ in which you have very very small devices that are on the edge of the network where the sensors sit. You often have a middle area called a gateway or a concentrator which is fairly middle to higher performance. On the back end you have a very high performance server. What this is showing is Java spanning all the way from the server side right down towards the type of chip that you will get at the sensor side as the network.” Barnes explained that he had two different demos running.The first, called the Solar Panel System Demo, measures the brightness of the light.  “This,” said Barnes, “is a light source demo with a Cortex M3 controlling the motor, on the end of which is a sensor which is measuring the brightness of the lamp. This is recording the data of the brightness of the lamp and as we move the lamp out of the way, we should be able using the server to turn the sensor towards the lamp so the brightness reading will go higher. This sends the message back to the server and we can look at the web server sitting on the PC underneath the desk. We can actually see the data being passed back effectively through a back office type of function within a utility environment.” The second demo, the Smart Grid Response Demo, Barnes explained, “has the same board and processor and is still using Java ME embedded with a different app on top. This is a demand response demo. What we are seeing within the managing environment is that people want to track the pricing signals of the electricity. If it’s particularly expensive at any point in time, they may turn something off. This demo sets the price of the electricity as though this is coming from the back of the server sending pricing signals to my home.” The demo had a lamp and a fan and it was tracking the price of electricity. “If I set the price of the electricity to go over 5 cents, then the device will turn off,” explained Barnes. “I can go into my settings and, in this case, change the price to 50 cents and we can wait a minus and the lamp will go off. When I change the pricing signal so that it is lower, the lamp will come back on. The key point is that the Java software we have running is the same across all the different devices; it’s a way to build applications across multiple devices using the same software. This is important because it fixes peak loading on the network and can stops blackouts.” This demo brought me back to a prior decade when Sun Microsystems first promoted  Jini technology, a version of Java that would put everything on the network and give us the smart home. Your home would be automated to tell you when you were out of milk, when to change your light bulbs, etc. You would have access to the web and the network throughout your home.It’s interesting to see how technology moves over time – from the smart home to the Internet of Things.

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  • Oracle at ARM TechCon

    - by Tori Wieldt
    ARM TechCon is a technical conference for hardware and software engineers, Oct. 30-Nov 1 in Santa Clara, California. Days two and three of the conference will be geared towards systems designers and software developers, those interested in building ARM processor-based modules, boards, and systems. It will cover all of the hardware and software, tools, ranging from low-power design, networking and connectivity, open source software, and security. Oracle is a sponsor of ARM TechCon, and will present three Java sessions and a hands-on-lab:  "Do You Like Coffee with Your Dessert? Java and the Raspberry Pi" - The Raspberry Pi, an ARM-powered single board computer running a full Linux distro off an SD card has caused a huge wave of interest among developers. This session looks at how Java can be used on a device such as this. Using Java SE for embedded devices and a port of JavaFX, the presentation includes a variety of demonstrations of what the Raspberry Pi is capable of. The Raspberry Pi also provides GPIO line access, and the session covers how this can be used from Java applications. Prepare to be amazed at what this tiny board can do. (Angela Caicedo, Java Evangelist) "Modernizing the Explosion of Advanced Microcontrollers with Embedded Java" - This session explains why Oracle Java ME Embedded is the right choice for building small, connected, and intelligent embedded solutions, such as industrial control applications, smart sensing, wireless connectivity, e-health, or general machine-to-machine (M2M) functionality---extending your business to new areas, driving efficiency, and reducing cost. The new Oracle Java ME Embedded product brings the benefits of Java technology to microcontroller platforms. It is a full-featured, complete, compliant software runtime with value-add features targeted to the embedded space and has the ability to interface with additional hardware components, remote manageability, and over-the-air software updates. It is accompanied by a feature-rich set of tools free of charge. (Fareed Suliman, Java Product Manager) "Embedded Java in Smart Energy and Healthcare" - This session covers embedded Java products and technologies that enable smart and connect devices in the Smart Energy and Healthcare/Medical industries. (speaker Kevin Lee) "Java SE Embedded Development on ARM Made Easy" - This Hands-on Lab aims to show that developers already familiar with the Java develop/debug/deploy lifecycle can apply those same skills to develop Java applications, using Java SE Embedded, on embedded devices. (speaker Jim Connors) In the Oracle booth #603, you can see the following demos: Industry Solutions with JavaThis exhibit consists of a number of industry solutions and how they can be powered by Java technology deployed on embedded systems.  Examples in consumer devices, home gateways, mobile health, smart energy, industrial control, and tablets all powered by applications running on the Java platform are shown.  Some of the solutions demonstrate the ability of Java to connect intelligent devices at the edge of the network to the datacenter or the cloud as a total end-to-end platform.Java in M2M with QualcommThis station will exhibit a new M2M solutions platform co-developed by Oracle and Qualcomm that enables wireless communications for embedded smart devices powered by Java, and share the types of industry solutions that are possible.  In addition, a new platform for wearable devices based on the ARM Cortex M3 platform is exhibited.Why Java for Embedded?Demonstration platforms will show how traditional development environments, tools, and Java programming skills can be used to create applications for embedded devices.  The advantages that Java provides because of  the runtime's abstraction of software from hardware, modularity and scalability, security, and application portability and manageability are shared with attendees. Drop by and see why Java is an optimal applications platform for embedded systems.

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  • jQuery : add css class to menu item based on browser scroller position

    - by antosha
    Hi, I have a menu: <ul class="menu-bottom"> <li id="m1" class="active"><a id="1" href="#"><span>Link 1</span></a></li> <li id="m2"><a id="2" href="#"><span>Link 2</span></a></li> <li id="m3"><a id="3" href="#"><span>Link 3</span></a></li> </ul> I want that depending of browser's scroller position, the "active" class goes the correct < li element. This is how I see it : if ($(document).height() == 500) { $('#m1').parent().addClass('active'). siblings().removeClass('active'); } if ($(document).height() == 1000) { $('#m2').parent().addClass('active'). siblings().removeClass('active'); } if ($(document).height() == 1500) { $('#m2').parent().addClass('active'). siblings().removeClass('active'); } I am not very familiar with jQuery Dimensions properties so this code doesn't make much sense, but I hope you get the idea. If someone could tell me how to make this work, it would be really cool. Thanks :)

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  • Solver Foundation Optimization - 1D Bin Packing

    - by Val Nolav
    I want to optimize loading marbles into trucks. I do not know, if I can use Solver Foundation class for that purpose. Before, I start writing code, I wanted to ask it here. 1- Marbles can be in any weight between 1 to 24 Tons. 2 - A truck can hold maximum of 24 Tons. 3- It can be loaded as many marble cubes, as it can take for upto 24 tones, which means there is no Volume limitation. 4- There can be between 200 up to 500 different marbles depending on time. GOAL - The goal is to load marbles in minimum truck shipment. How can I do that without writing a lot of if conditions and for loops? Can I use Microsoft Solver Foundation for that purpose? I read the documentation provided by Microsoft however, I could not find a scenario similar to mine. M1+ M2 + M3 + .... Mn <=24 this is for one truck shipment. Let say there are 200 different Marbles and Marble weights are Float. Thanks

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  • How to write Java-like enums in C++ ?

    - by Rahul G
    Coming from Java background, I find C++'s enums very lame. I wanted to know how to write Java-like enums (the ones in which the enum values are objects, and can have attributes and methods) in C++. As an example, translate the following Java code (a part of it, sufficient to demonstrate the technique) to C++ : public enum Planet { MERCURY (3.303e+23, 2.4397e6), VENUS (4.869e+24, 6.0518e6), EARTH (5.976e+24, 6.37814e6), MARS (6.421e+23, 3.3972e6), JUPITER (1.9e+27, 7.1492e7), SATURN (5.688e+26, 6.0268e7), URANUS (8.686e+25, 2.5559e7), NEPTUNE (1.024e+26, 2.4746e7); private final double mass; // in kilograms private final double radius; // in meters Planet(double mass, double radius) { this.mass = mass; this.radius = radius; } private double mass() { return mass; } private double radius() { return radius; } // universal gravitational constant (m3 kg-1 s-2) public static final double G = 6.67300E-11; double surfaceGravity() { return G * mass / (radius * radius); } double surfaceWeight(double otherMass) { return otherMass * surfaceGravity(); } public static void main(String[] args) { if (args.length != 1) { System.err.println("Usage: java Planet <earth_weight>"); System.exit(-1); } double earthWeight = Double.parseDouble(args[0]); double mass = earthWeight/EARTH.surfaceGravity(); for (Planet p : Planet.values()) System.out.printf("Your weight on %s is %f%n", p, p.surfaceWeight(mass)); } } Any hep would be greatly appreciated! Thanks!

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