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  • SteelSeries & JavaFX External Control via Tinkerforge

    - by Geertjan
    The first photo shows me controling a JavaFX chart by rotating a Tinkerforge device, while the other two are of me using code by Christian Pohl from Nordhorn, Germany, to show components from Gerrit Grunwald's SteelSeries library being externally controled by Tinkerforge devices: What these examples show is that you can have a robot (i.e., an external device), of some kind, that can produce output that can be visualized via JavaFX charts and SteelSeries components. For example, imagine a robot that moves around while collecting data on the current temperature throughout a building. That's possible because a temperature device is part of Tinkerforge, just like the rotating device and distance device shown in the photos above. The temperature data collected by the robot would be displayed in various ways on a computer via, for example, JavaFX charts and SteelSeries components. From there, reports could be produced and adjustments could be made to the robot while it continues moving around collecting temperature data. The fact that Tinkerforge has Wifi support makes a scenario such as described here completely possible to implement. And all of this can be programmed in Java, without very much work, since the Java bindings for Tinkerforge are simple to use, such as shown in yesterday's blog entry.

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  • How do create an encrypted system with multiple Linux distributions?

    - by niels
    A few weeks ago I created a completely encrypted system on a notebook and must say I like the idea. It's a little bit annoying to enter the password on every boot, but it's nice to know even if I loose the computer I don't give my data to other people. With the alternate-cd it's easy to do. Now I have to setup a new system where I want to combine the new idea with my usual usage strategy. There I have more partitions: 3 system, Home, Different Data-Partitions for vm-data, photo-data and mp3-data. The background is that I prefer not to update a system. I prefer to install the new version parallel to the old system. So I can easily test it. Obviously the Data-Partitions are used for both systems. My questions is, how can I easily combine both my strategy and the crypto-approach? Or is it impossible. The way to do the crypted stuff by hand is in my eyes to complicated.

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  • Cannot to connect to a Cassandra DB from localhost

    - by DJYod
    Hello, I don't know if I'm on the right site, I installed OpenSolaris a single cassandra node, I don't have other node. On the same server, I install Ruby 1.8 with the gem Cassandra. If I try to connect from my computer to the Cassandra node through the ruby gem cassandra, I can connect perfectly, if I try to to the same from the ruby gem cassandra in the server, it says that there is no listening on 127.0.0.1. I can connect locally to the instance using telnet 127.0.0.1 9160 and it works... any idea? Thank you!

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  • Copying OS X account settings to new user account

    - by Donna Crain
    Hi I hope someone can help me... I accidentally renamed my own user name on my mac running OS X 10.4.11 and tried renaming back to what it was but now I have two accounts (the one I want to use which has all my preferences, applications, mail boxes, etc etc) is it possible to copy my settings from my original into this new user name? When I open my computer it defaults to this new account but everything is setting up from new and I just need to get access to all my work documents, mail settings etc. If there is anyone who could help out, I would be very grateful. Thank you in advance.

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  • Detecting/Reactivating serial port that becomes inactive on Ubuntu Linux 10.10

    - by Tom
    I am using a usb2serial port to communicate with some old equipment (using my code built upon the boost asio library - I think my code is fine because it works almost all of the time). Every so often (maybe once every few days) the communication stops with my device with no error at all - the device just does not respond. I then restart my computer and everything is fine again. Does anyone know where I can start to analyse this problem? My serial port loads up fine (in /dev/ttyUSB0) and the boost library does not throw an error. The device just does not respond. If I restart the device no change - only when I restart my pc does it make a difference. I have also tried unplugging and replugging the usb connector. Does anyone know what gets cleared in the reboot (w.r.t the serial device) or what I can probe when the problem happens again (rather than just restarting with hope)

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  • File apparently doesn't exist when attempting to delete it

    - by Alex Yan
    A month or so back, I untarred the Linux source in a folder in Cygwin (I was curious as to whether or not it would compile with MinGW 'cause my other computer running Linux is a slow single core Sempron). I tried deleting it, but there's 1 file left, and it will not delete... Cygwin resides in C:\cygwin, and I untarred the source in C:\cygwin\src\linux-3.7.1. It didn't compile... So I tried deleting the folder. It was going well, until at the end, when I realized not all files are deleted. I tried deleting linux-3.7.1 folder again, and an error popped up: I opened the folder, and found that there's 1 source file left: aux.c, which is in C:\cygwin\src\linux-3.7.1\drivers\gpu\drm\nouveau\core\subdev\i2c\aux.c. It will not: Delete Open Move General properties: Security properties: How do I remove this file?

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  • Why is the root partition on my disk full?

    - by Agmenor
    I installed Ubuntu 12.04 by doing a fresh install where there was previously Ubuntu 11.10. My computer warns me now that my disk is nearly full. After having run apt-get purge, run apt-get autoremove and emptied the Trash can, I still have this problem as shown by this screenshot of Gparted: The disk /dev/sda7 is indeed full. I ran the Disk Usage Analyzer (Baobab) and I am still not sure of what is happening: One of my hypothesis is that when installing Ubuntu 12.04, I didn't configure my disks well and the disk /dev/sda6 is not mounted well as /home. Is this the reason indeed? What should I do to verify this and then to get the things fixed? Here are a few additional details to answer the questions I received (thank you everybody): My home directory is not encrypted. The Backup utility (Déjà Dup) is not set for automatic backups. (I do it myself and manually.) After I mount /dev/sda6, the command df -h gives Filesystem Size Used Avail Use% Mounted on /dev/sda7 244G 221G 12G 96% / udev 3,9G 4,0K 3,9G 1% /dev tmpfs 1,6G 904K 1,6G 1% /run none 5,0M 0 5,0M 0% /run/lock none 3,9G 164K 3,9G 1% /run/shm /dev/sda6 653G 189G 433G 31% /media/8ec2fa69-039b-4c52-ab1b-034d785132a1 (sorry but formatting this into code does not work, for an unknown reason) Thanks to izx's post, I realized /dev/sda6 was not even mounted before. It contains all the documents I used to have when I was running Ubuntu 11.10.

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  • Delay at Windows Log On Screen

    - by Ryan Elkins
    I'm getting a delay when entering my password at the log on screen in Windows 7. What I mean is that I can select the text box but pressing keys does nothing. I had this problem initially on this computer with Vista installed - when I reformatted and installed Windows 7 the problem went away - but over the weeks it is slowly coming back (the delay seems to be getting longer). Any clues as to why this is happening and how I can fix it? It currently takes about 4-8 seconds before it will accept keyboard input.

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  • Utilize different region format for a single application on Mac OS X

    - by Jeff Hellman
    Is there a way to have a single Mac OS X application utilize a different region format than the system default? For example, I'd like to keep my system operating in English with US date formats but have my lesson planning software utilize French date formats. If I put my entire computer into French mode, I get the desired results, but I'd rather keep my entire system in US mode and have the Planbook application work with French region formats. I know about Language Switcher but that only allow per-app selections of localizations to be used, not which date format to use. I don't care about having the French localization of Planbook appear, I just want the date format to be French.

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  • What's the closest equivalent of Little Snitch (Mac program) on Windows?

    - by Charles Scowcroft
    I'm using Windows 7 and would like to have a feature like Little Snitch on the Mac that alerts you whenever a program on your computer makes an outgoing connection. Description of Little Snitch from its website: Little Snitch informs you whenever a program attempts to establish an outgoing Internet connection. You can then choose to allow or deny this connection, or define a rule how to handle similar, future connection attempts. This reliably prevents private data from being sent out without your knowledge. Little Snitch runs inconspicuously in the background and it can also detect network related activity of viruses, trojans and other malware. Little Snitch provides flexible configuration options, allowing you to grant specific permissions to your trusted applications or to prevent others from establishing particular Internet connections at all. So you will only be warned in those cases that really need your attention. Is there a program like Little Snitch for Windows?

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  • Power supply surges detected during previous power on

    - by Blastcore
    Message is this: "Power supply surges detected during previous power on" "ASUS Auto-Surge was triggered to protect system from unstable power supply" When i went to sleep yesterday and woke up, when i moved the mouse to go back from screen saver, it didn't do anything. So i left it, i came back from class and got this issue. (I didn't restart before going to class... So the screen was left like it was) Today there was a power cut in half of my house. (Computer is on the side that it didn't cut...) Voltages are fine, like always. How do i remove message? It's just maybe sensor glitch? Even disabling the Anti-Surge my PC "shuts down" (Only monitor, but maybe components do too.)

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  • What desktop chipsets support AMD's Rapid Virtualization Indexing?

    - by netvope
    Rapid Virtualization Indexing (RVI) is a hardware virtualization feature that can potentially give significant performance improvement. Intel's equivalent is Extended Page Tables. See http://en.wikipedia.org/wiki/Rapid_Virtualization_Indexing for more details. My question is: Does RVI require motherboard or chipset support? If yes, what desktop chipsets support it? I've ordered a Phenom II CPU (which supports RVI) but I haven't bought the motherboard. I'll install XenServer or VMware ESXi (which both support RVI) on the new computer.

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  • Connecting my XBOX 360 to home network

    - by patrick
    I am trying to set up my XBOX 360 as a Windows Media Center Extender. I input the code as shown on the XBOX screen, but I get the error message: "Cannot Set Up Extender." This means that the Extender was found (there's a separate error msg for extender not found), however it can't be set up. Windows points me to this page which tells me to change my router settings to enable multicast and UPnP. My router doesn't have those specific settings but I did open all ports for the XBOX. What is odd about this problem is that it did work, then I restarted my computer and didn't change any settings, and now it doesn't work. I guess something did change, but I can't figure out anything else to try after opening all ports. I'm running Windows 7 and the router is fairly recent (I bought it about six months ago) so it should be able to handle this. The router firmware is up to date.

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  • I started getting a weird message "Encrypting file system - Back up your file encryption key"

    - by Ove
    I started getting a strange message when I start my computer. An icon appears in the system tray, and a popup tells me "Encrypting file system - Back up your file encryption key". I know what EFS is, but I don't use it. To my knowledge, I don't have any encrypted files on my partition. I have searched using Total Commander on all the partitions for files that have the "encrypted" attribute, but I found nothing. So I don't have any encrypted files. Does anyone know what I did to get this message?

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  • MyPaint is an Open-Source Graphics App for Digital Painters

    - by Asian Angel
    Are you looking for a terrific graphics app to use for original painting and artwork creation on your computer? Whether it is for you or the kids, MyPaint is an app that you should definitely have on hand for when those artistic moods come along. For our example we chose to install MyPaint on Ubuntu 10.10…you can easily find it in the Ubuntu Software Center by doing a quick search. Once you have it installed, all that is left to do is decide if you want to add additional brushes (link provided below) and then start having fun creating your next work of art. Here are some of MyPaint’s wonderful features: Exists for several platforms (Linux, Windows, and Mac OS X) Supports pressure sensitive graphics tablets Extensive brush creation and configuration options Unlimited canvas (you never have to resize) Basic layer support Comes with a large brush collection including charcoal and ink to emulate real media MyPaint is fun to use and can quickly become very addicting as you experiment during the creation process! Links MyPaint Homepage Download Additional Brushes for MyPaint Download the GIMP Plugin for the OpenRaster File Format Latest Features How-To Geek ETC Internet Explorer 9 RC Now Available: Here’s the Most Interesting New Stuff Here’s a Super Simple Trick to Defeating Fake Anti-Virus Malware How to Change the Default Application for Android Tasks Stop Believing TV’s Lies: The Real Truth About "Enhancing" Images The How-To Geek Valentine’s Day Gift Guide Inspire Geek Love with These Hilarious Geek Valentines MyPaint is an Open-Source Graphics App for Digital Painters Can the Birds and Pigs Really Be Friends in the End? [Angry Birds Video] Add the 2D Version of the New Unity Interface to Ubuntu 10.10 and 11.04 MightyMintyBoost Is a 3-in-1 Gadget Charger Watson Ties Against Human Jeopardy Opponents Peaceful Tropical Cavern Wallpaper

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  • Mouse settings/properties dialog box won't open in Windows 7

    - by ymasood
    Hi, I have a problem trying to open my computer's mouse settings by either going to the command prompt and typing, 'control mouse', 'main.cpl' (as researched online) or simply by trying to go to the Control Panel and clicking on 'Mouse' under Hardware and Sound section. I have also tried running cmd as Administrator and trying the above commands but that is of no help. Lastly, if I search for 'mouse' and click 'Mouse' from the Windows search bar, that doesn't work either. In the past I had bought and installed Microsoft Wireless Mobile Mouse 6000 software and have just now bought and installed HP's Wireless Comfort Mobile mouse. Any help in this regard is highly recommended. I won't be able to restore or reinstall my laptop since it's a heavy use machine. Thanks! Yasser

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  • email to sip voicemail

    - by alfredwesterveld
    Hi all, I don't know if this is the correct place to answer this question, but here it goes. I have been googling for a cheap email to sip voicemail service. That is because I have got a Linksys/Cisco SPA-941 phone which has a led which will light up when a new message comes in inbox(somebody calls me). So what I want is the following. I want the e-mail(title only is enough) recorded(By computer voice) and sent to my phone which I can playback when the led lights up. Like I said above I was unsuccessful googling for a service like this and I hope somebody knows if this service exists. Many thanks, Alfred

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  • The previous system shutdown at xxxx was unexpected

    - by m.edmondson
    For the past two nights we had a remote server shutdown unexpectedly. When rebooted we get the following message: Event Type: Error Event Source: EventLog Event Category: None Event ID: 6008 Date: 16/02/2011 Time: 09:10:43 User: N/A Computer: WELPLAN-1 Description: The previous system shutdown at 07:27:32 on 16/02/2011 was unexpected. For more information, see Help and Support Center at http://go.microsoft.com/fwlink/events.asp. Data: 0000: db 07 02 00 03 00 10 00 Û....... 0008: 07 00 1b 00 20 00 42 02 .... .B. 0010: db 07 02 00 03 00 10 00 Û....... 0018: 07 00 1b 00 20 00 42 02 .... .B. Obviously this message doesn't help much, but what does all the hexadecimal mean? Will it help me track down the problem? Any pointers as to where to look?

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  • Is there a Linux-compatible R/C simulator that works with real radios?

    - by Norman Ramsey
    My Dad flies radio-controlled (R/C) aircraft. He used to run a simulator called "RealFlight" which allowed him to connect his actual radio to his computer and fly simulated craft. He learned enough to fly actual planes, but he wants to move up from "trainer" aircraft to higher-performance craft. After some crashes, he'd like to go back to the simulator for a while. The catch: he's given up Windows and is now running Ubuntu. Question: is there an R/C flight simulator that Runs on Ubuntu? Allows you to connect your radio and use it to control the simulator, preferably through a USB port?

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  • How to select a server that supports Windows scheduled file IO

    - by Kristof Verbiest
    Background: I am developing an application that needs to read data from disk with a fairly consistent throughput. It is important that this throughput is not influenced by other actions that happen on the disk (e.g. by other processes). For this purpose, I was hoping to use the 'Scheduled File I/O' feature in Windows (throught the GetFileBandwithReservation and SetFileBandwithReservation functions). However, this StackOverflow question has thought me that this feature is only available if the device driver supports it. Currently I have no computer at my disposition that seems to support this feature (I have an HP Proliant server and a Dell Precision workstation). Question: If I were to order a new server, how can I know beforehand if this feature will be supported by the device driver? How 'upscale' does the server have to be? Has anybody used this feature with success and cares to share his experiences?

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  • Frequent grub rescue error: unknown filesystem

    - by user3215
    It's really frustrating. Three week's back story: I faced the following error on ubuntu 10.04 LTS Desktop, error : unknown filesystem grub rescue> I tried many solutions online apart from 1 and 2 and eventually I could not boot my system at all. Trying those solutions could not completely fix it and then I had to face initramfs(could not remember exact error). As I could not fix, a week back I did a fresh install of Ubuntu 12.04 Desktop and after a week i.e, now, I got the same grub rescue> error. Could anybody tell me what's the reason behind this error?. Is there any problem with the Ubuntu or it's a problem at my side due to some reason?. My machine description: I have two hard disks, windows is installed on one hard disk and on another it's Ubuntu. I installed the operating systems(vista, ubuntu) such a way one is not known to another, I mean to say, I'll unplug one hard disk and install the Ubuntu and similarly I'll unplug the ubuntu hard disk, installed the vista on another hard disk, generally I do(I actually don't want to run into grub/boot.ini issues installing OSs connecting both the hard disks). When ever I power on the computer windows will boot by default, and I'll generally boot to ubuntu by pressing F8 and selecting the ubuntu hard disk. Any help is greatly appreciated!. Thank you!

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  • Introducing Elke Phelps, Guest Author

    - by Steven Chan (Oracle Development)
    I'm very pleased to welcome Elke Phelps as a new contributor to this blog.  Elke needs little introduction to most long-time readers, as she's been a pillar of the E-Business Suite sysadmin community for years.  What's special about this announcement is that Elke is joining this blog's panel of guest authors as a member of my Product Management team in the Oracle E-Business Suite Applications Technology Group.  I am thrilled to have her as part of my team and look forward to her contributions to this blog. Here's a short bio: Elke is a Product Manager in the Oracle E-Business Suite Applications Technology Group.  She joined Oracle in 2011 after having been an Oracle customer and Oracle Technologist (Oracle Database Administrator, Oracle Applications DBA, Technical Architect and Technical Manager of an Oracle Applications DBA Team) since 1993. Elke is the lead author of the Oracle Applications DBA Field Guide (Apress 2006) and Oracle R12 Applications DBA Field Guide (Coqui Tech and Press 2010).  Elke is also the founder of the Oracle Applications User Group (OAUG) E-Business Suite Applications Technology Special Interest Group (SIG) and served as President of the SIG from February 2005 - August 2011.  Elke has been a speaker at Oracle OpenWorld and Collaborate since 2004.  Prior to joining Oracle, Elke was designated an Oracle ACE (2007) and Oracle ACE Director (2009).   Elke has a Computer Science Degree and a Masters of Business Administration from the University of Oklahoma.  In her spare time, Elke enjoys traveling especially to Europe, Puerto Rico and the amazing US National Parks.  Elke also enjoys hiking, antiquing, gardening and cooking. 

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  • IIS restart causes many Connection_Abandoned_By_AppPool messages in log

    - by PP
    After about half a day the IIS 6.0 ASP (VBScript) web server appears to die. It accepts TCP connections (i.e. I can telnet localhost 80 successfully) however it does not return any response. When I restart the server (going through My Computer - Manage - IIS - All Tasks - Restart) I get a lot of entries in C:\WINDOWS\system32\LogFiles\HTTPERR\httperr1.log at the time of restart that say: ... 80 HTTP/1.1 GET / - 843545307 Connection_Abandoned_By_AppPool DefaultAppPool ... 80 HTTP/1.0 GET / - 843545307 Connection_Abandoned_By_AppPool DefaultAppPool ... 80 HTTP/1.0 GET / - 843545307 Connection_Abandoned_By_AppPool DefaultAppPool where the ... refers to the prefix of the line, e.g. 2010-03-17 10:05:06 127.0.0.1 4927 127.0.0.1 80 There are 583 such lines (Connection_Abandoned_By_AppPool) in my log at time of restart. What could be the cause of this problem?

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  • How to use iTunes USB File Transfer to copy files from PC to Apple iPad, e.g. PDF files for viewer a

    - by Chris W. Rea
    I'm interested in reading PDF-format ebooks on my Apple iPad. I have half a gig of PDFs I want to transfer to it, from my PC. I'm familiar already with loading EPUB-format titles through iBooks – unfortunately, iBooks doesn't read PDFs so I am looking at using a third-party application. I know many such third-party media viewer applications for the iPad support download from web or email, but that's a hassle. I've heard iTunes 9.1 added support for USB File Transfer, specifically for iPad devices. How does USB File Transfer work in iTunes, for transferring files from my PC to my iPad? Please provide example steps. Moderators: Please remember the FAQ's "except insofar as they interface with your computer." ;-)

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  • Dual-Boot Windows 7 and Ubuntu 12.04.1

    - by z3matt
    I installed Ubuntu 12.04.1 alongside Windows 7. I wanted to check out what it's all about. By the way, i actually like the interface a lot and the free office suite is very very nice. I love how they can save to the .docx as well. Onto the story: I installed it using this tutorial and I set it all up and everything and things were great. I used the EasyBCD 2.2 Tool and created an Ubuntu 12.04.1 entry and when I boot the computer the Windows 7 and Ubuntu 12.04.1 option show up. However, when I click Ubuntu it does not boot. It say and error and says I must put in the Windows CD to repair or something like this. Here's my system specs: ASRock Extreme4 (EUFI BIOS) Corsair Vengaence 2x4GB nVidia GeForce 9800GT i5-3570K 3.4GHz Corsair 620W Modular 500GB WD Caviar Blue I have no clue what could be wrong with it and I would love any assistance. I am willing to mess around and if something happens wrong I can just reinstall windows and it won't be a huge deal. Thank you very much! Here are my partitions I made: /boot 500MB / 10000MB /home 20000MB swap area 4000MB BIOS 4000MB

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