Wednesday, September 29, 2010

2nd-generation Raytheon exoskeleton prototype vid

 
 

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via MAKE Magazine by Sean Michael Ragan on 9/28/10

_dsc1078_multivu_2_playing_soccer.jpg

I remember awhile back when video of the original XOS prototype made the rounds. Well, now, defense behemoth Raytheon is back with another somewhat cheesy testosterone-fueled video showing the new lighter, stronger XOS 2 prototype performing various feats of strength in preparation for the upcoming holiday season. There's heavy metal music and one of the actors from Iron Man who is not, ah, actually Iron Man.

water_ammo_upload.jpg

All kidding aside, this is pretty neat. It supposedly uses 50% less power than the first prototype and is stronger to boot. And in spite of the "superweapon" marketing the concept sketches betray the rather more unglamorous function such devices are intended to play in a military context, i.e. allowing fewer people to load and unload more stuff, faster. [via Gizmodo]

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Saturday, September 25, 2010

Blog Post: A bluegrass cover of "Walk Like An Egyptian"

 
 

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via Site Home by maholmes on 9/25/10

Spotted by my mate Marty - excellent cover (or reimagining as I believe the TV parlance is these days).


 
 

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Friday, September 24, 2010

xkcd's circuit diagram

 
 

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via MAKE Magazine by Gareth Branwyn on 9/22/10

circuit_diagramxkcd.png

This kooky circuit diagram, from the nerdgasmic webcomic xkcd, is full of the funny, like a magic smoke component, a "moral rectifier," an Arduino in the circuit ("just for blog cred"), a 666 timer, and on and on. [Spotted on Jeri Ellsworth's Facebook page]

xkcd

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Wednesday, September 22, 2010

Watch the Aurora Borealis Live via Webcam

 
 

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via Universe Today by Nancy Atkinson on 9/21/10

Aurora Borealis. From Wikimedia Commons.

If you've even seen the Aurora Borealis live, you know how awe-inspiring it can be. But if you live too far south, or aren't a night owl, there's now a way for to you see the aurora, via the web, every night. Last night was the world premier of AuroraMAX – an online observatory which began streaming Canada's northern lights live over the Internet. "Armchair skywatchers everywhere can now discover the wonder of the northern lights live on their home computer screen," says Canadian Space Agency President Steve MacLean. "We hope that watching the dance of the northern lights will make you curious about the science of the sky and the relationship we have with our own star, the Sun."
(...)
Read the rest of Watch the Aurora Borealis Live via Webcam (156 words)


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Journal of a 6 year old's 3-year whaling ship voyage in 1868

 
 

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Sunday, September 19, 2010

Booting the Hawkboard through Mac OS X

 
 

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via MAKE Magazine by Brian Jepson on 9/19/10

Hawkboard

The Hawkboard is a Linux-based open source hardware project that is based on the same hardware as the Beagleboard. The Hawkboard design files are available from Hawkboard.org, although I'd like to see them adopt a more detailed license for it to make it easier for people working on derivatives to perform their due diligence. (Perhaps the results of next week's Open Hardware Summit will inspire more folks to adopt open source hardware licenses). The Hawkboard folks were kind enough to send me a board to experiment with.

The Embedded Linux Wiki has great instructions for getting up and running with the Hawkboard, but they are geared toward people using Linux. Although I've got a virtual machine handy running Linux, I do most of my work on the Mac, so I looked into the steps needed to boot the Hawkboard under the Mac.

To get it to work, you need to run a TFTP server and an NFS server on your Mac. Fortunately, the current version of Mac OS X has all that built in, even on the non-server versions of the OS.

Setting up the TFTP Server
First, download the uImage kernel. This is described on the Embedded Linux Wiki, but I was not able to get the default uImage kernel working with the Mac OS X NFS server. Instead, I used the uImage available from Angstrom Linux, and renamed the file to uImage-Angstrom.

Next, open the Mac OS X Terminal (/Applications/Utilities/Terminal), copy the file to the /private/tftpboot directory, and start the tftp server. The commands for this are shown below. You will need to be logged in as an administrative user to run these commands. If you are prompted for a password, type your password (you may need to change "~/Downloads/uImage-Angstrom" to the exact location where you downloaded the uImage):

cd /private/tftpboot/ sudo cp ~/Downloads/uImage-Angstrom . sudo launchctl load -F /System/Library/LaunchDaemons/tftp.plist 

Setting up the NFS Server
Next, download a root file system. Although this is described on the Embedded Linux Wiki, since I decided to work with the Angstrom Linux distribution, I used the online image builder to create my image with the following options:

  • Machine: hawkboard
  • Complexity of options: advanced
  • Base system: regular
  • /dev manager: kernel
  • Type of image: tar.bz2
  • User environment: console

Go back to the terminal, and create a directory to hold the root file system, and extract the RootFS file into that directory (you'll need to change "random-abccd17c" to match the file you actually downloaded):

sudo mkdir /Hawkboard cd /Hawkboard sudo tar xvfp ~/tmp/random-abccd17c-image-hawkboard.tar.bz2

Next, edit the /etc/exports file, and add a line like the following to it:

/Hawkboard -mapall=root -network NETWORK -mask MASK

You will need to replace NETWORK and MASK with the correct network address and subnet mask for your network. For example, on my Mac, I used:

/Hawkboard -mapall=root -network 10.0.1.0 -mask 255.255.255.0

To edit a file in /etc. it's easiest to use the nano or vi text mode editors. You can start nano with sudo nano /etc/exports and vi with sudo vi /etc/exports.

Next, start the NFS server and make sure that the last command displays the /Hawkboard entry:

sudo nfsd enable showmount -e

Loading the Linux Kernel
Now you're ready to connect your Hawkboard using Ethernet to the same network that your Mac is connected to. If you decide to connect your Hawkboard directly to your Mac over Ethernet, that will work, but you'll need to check your Mac's self-assigned IP address in System Preferences->Network and use that when configuring the /etc/exports file (for example, if your Mac is showing a self-assigned address of 169.32.23.100, you can safely use 169.32.23.0 for the network and 255.255.255.0 for the mask).

You'll also need to a serial connection from your Mac; for a serial terminal program, I suggest CoolTerm. Since Macs don't have built-in RS232 ports, you'll need a USB-RS232 adapter like this one. You'll also need a female-to-female DB9 null modem such as Cables2Go's 1ft DB9 F/F Null Modem Cable.

For example, to load the uImage file I downloaded, I clicked CoolTerm's Options button and selected to my USB serial port (PL2303-00001004) at 115200 bps, then clicked OK. After that, I clicked Connect, powered up the Hawkboard, and typed in these commands at the hawkboard.org > prompt:

setenv serverip 10.0.1.3 setenv ipaddr 10.0.1.201 tftp c0700000 uImage-Angstrom 

You'll need to do three things: replace 10.0.1.3 with your Mac's IP address, replace 10.0.1.201 with an unused IP address that the Hawkboard will use, and (if necessary) replace uImage-Angstrom with the name of the file you copied into /tftproot earlier in this guide. You should see something like this happen:

TFTP from server 10.0.1.3; our IP address is 10.0.1.201 Filename 'uImage_v1'. Load address: 0xc0700000 Loading: *.################################################################# . ################################################################# . ################################################################# . ################################################################# . ################################################################# . ######################################################## done Bytes transferred = 1934036 (1d82d4 hex)

Booting the Kernel
Now you're ready to try booting the kernel using the instructions for booting from NFS in the wiki. I gave the Hawkboard the following command:

setenv bootargs "console=ttyS2,115200n8 noinitrd rw root=/dev/nfs nfsroot=10.0.1.3:/Hawkboard ip=dhcp init=/sbin/init"

Then I booted up the Hawkboard with the command bootm c0700000, and in a minute or two, was greeted with the login prompt, and could log in as root (no password):

.-------.                                            |       |                  .-.                       |   |   |-----.-----.-----.| |   .----..-----.-----. |       |     | __  |  ---'| '--.|  .-'|     |     | |   |   |  |  |     |---  ||  --'|  |  |  '  | | | | '---'---'--'--'--.  |-----''----''--'  '-----'-'-'-'                 -'  |                 '---'  

The Angstrom Distribution hawkboard ttyS2

Angstrom 2010.7-test-20100909 hawkboard ttyS2

hawkboard login:

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Tuesday, September 14, 2010

Miguel de Icaza: This was news to me

 
 

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via Monologue by Miguel_x0020_de_x0020_Icaza@monologue.go-mono.com on 9/14/10

I have been living in the US for 10 years, and I never thought that people that many of the people that went through college end up with huge debts that they had to repay for 30 years.

This is probably creating a generation of graduates that is unable to take risks, start their own business, take a year off, launch the next startup or just catch a break.

During the discussion today on Twitter, this link came up, this one as well as this infographic from College Scolarships:


 
 

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Friday, September 10, 2010

An Inviting Timber&Glass Home in Washington : Davis Residence

 
 

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Situated on a dreamy cliff site, with unobstructed views over San Juan Islands, this beautiful home was designed by Miller Hull Partnership in Bellingham, Washington. The Davis Residence measures 1400 sq. ft, including the guest house and garage. According to the architects, "the concept marries a long gently sloping roof form containing the kitchen, entry and studio with a vertical tower containing the living room and master bedroom above.The roof forms express their timber construction with exposed joist, 1×4 skip sheathing and plywood diaphragms. The high performance wood fir windows provide thermal breaks while being strong enough for the mullions to be of minimal dimension. Wood T&G paneling is stained in bold transparent colors." We have to say we were fascinated by the warm atmosphere that this home seems to generate, not to mention its incredible vistas.

Davis Residence, an Inviting Timber&Glass Home in Washington

Davis Residence, an Inviting Timber&Glass Home in Washington

amazing home

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dr 070910 11 An Inviting Timber&Glass Home in Washington : Davis Residence

dr 070910 06 940x1251 An Inviting Timber&Glass Home in Washington : Davis Residence

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dr 070910 08 940x1296 An Inviting Timber&Glass Home in Washington : Davis Residence

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A Guide to Choosing an Internet Based Fax Service

 
 

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send fax from computerAlthough most people have switched to email, there are those rare occasions when you have to send signed documents with your written signature and a fax just seems like an appropriate solution then.

You don't need a dedicated fax machine any more as there are quite a few good web based services, both paid and free, that let you send and receive faxes using your computer itself without requiring any extra hardware. You don't need a "fax modem" or even your traditional landline phone to send a fax via the computer.

How Internet Faxing Works?

Most online fax services work in a similar way. They give you a dedicated fax number and any fax message that's sent to that number is forwarded to you as an email attachment. Alternatively, if you want to send a fax from your computer to another fax machine, you can send your document as an email attachment to the online fax service who in turn will forward it to the recipient's fax machine.

Choosing an Internet Fax Service

After researching the plans and features of about a dozen Internet based faxing services, I have shortlisted the top 5 services that have all the necessary features and are most cost-effective.  They have plans for everyone from the consumer who needs to send or receive an occasional fax to the businessman who needs to send multiple faxes daily.

1. GotFreeFax.com – With Got Free Fax, you can send up to two faxes in a day for free to any number in the U.S. and Canada.

You can either use its online rich text editor to compose a fax or upload a PDF /Word file from your computer, type the recipient's fax number and hit send. The service won't add any advertisements or branding to your faxes. If you would like to send a fax to an international number, you can buy credits through PayPal.

2. myFax.com – My Fax allows you to send two faxes, with up to 10 pages each, per day for free. Unlike "Got Free Fax," which only lets you send free faxes to US and Canada based numbers, My Fax supports a much large set of countries even for their free service.

MyFax offers a dedicated Fax number for an extra fee where you can receive faxes. All faxes sent to your personal fax number will arrive in your email inbox as PDFs.

3. GreenFax.com – With Green Fax you can again send and receive faxes via email. They offer a unique prepaid plan where you are only charged per page for sending faxes to US and Canada numbers without any monthly fees.

If you are sending a fax to an international number, you are billed per-minute of fax transmission time and unsuccessful transmissions are not charged.

4. eFax.com – If you need a fax number outside the USA, eFax is probably the best option for you. They offer your local fax numbers in 45 different countries for your incoming faxes. For a fixed monthly fee, you may receive up to 130 pages by fax per month while you pay a per page fee for sending faxes and this varies based on the destination.

With eFax, you may either send and receive faxes via your email program or they also offer integration with Microsoft Office programs.

5. RingCentral Fax – With RingCentral, you can send faxes worldwide through an email message, via their web interface, or from any Windows application. They charge a fixed monthly fee and their outgoing fee seems to be among the lowest in the industry.

Internet Fax Services – Plan Comparison Chart

The following chart (full version) compares in detail the pricing plans of various online fax services and also the cost of sending faxes to some popular destinations.

online fax - comparison

These rates often apply to fax pages that take less than 60 seconds to transmit. If the fax transmission is taking longer than 60 seconds, some companies may bill you on a per-minute basis instead of per page. 

[*] FaxPipe and MaxEmail are two other Internet based fax services that let you send and receive faxes and they have an overall lower monthly fee but it has be paid annually.

Which is the best Internet Faxing Service for me?

It depends on your country of residence, the volume of documents that you plan to fax in a month and the location of your client (if you wish to receive incoming faxes).

For most consumers, who have to send a fax occasionally , GotFreeFax looks like a perfect service. They do not charge a monthly fee, the rates for international outgoing faxes are competitive and you can send a fax from the browser without requiring any setup.

If your clients /contacts are based outside the U.S., you can go with eFax as they will give you a local fax number in that country and your clients won't have to dial an international number in order to send you a fax. RingCentral and myFax also offer attractive pricing plans for volume faxing.

Related: Send a Fax Online with Skype

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This article, titled A Guide to Choosing an Internet Based Fax Service, was originally published at Digital Inspiration under Fax, Internet.


 
 

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Monday, September 06, 2010

Trooper lovins

 
 

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via jwz by jwz@jwz.org on 9/4/10


 
 

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Thursday, September 02, 2010

Help Computer Users Remotely with TeamViewer

 
 

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via the How-To Geek by Justin Garrison on 9/1/10

Before remote software, helping your friends and family with computer problems often meant hours on the phone trying to remember what a menu looked like or where a file was saved. Here we look at helping them remotely with TeamViewer.

With TeamViewer you can remotely help your friends and family on any major operating system straight from your computer, the web, or on the go with your iPhone or iPad. TeamViewer full version should be installed on your computer for you to provide remote support for your users. You can both send and receive support with the TeamViewer full version installed on your computer. The full version is completely free for personal use and has some extra features that we will go over later.

Setting up TeamViewer

To get started download and install the full version of TeamViewer on your computer. TeamViewer full version supports Windows, OS X, Linux, and iOS.

Note: You cannot remote to an iOS device but you can offer assistance from them.

Once the program is installed you will be able to connect to anyone running TeamViewer full version or TeamViewer QuickSupport. All you need to connect is the TeamViewer ID and password. For security purposes the passwords are randomly generated each time TeamViewer is launched.

Note: Some options such as VPN and video chat are only available on Windows. Remote support, Presentation, and File Transfer are available on all operating systems.

It isn't required, but it is a good idea to also make a free account on the TeamViewer's website. TeamViewer's website will allow you to manage computers and people that you have set up as partners so you can quickly remote with them, share files, or just instant message. To create the username you can either go to TeamViewer's homepage or you can also click the icon in the bottom right corner to show the partner list window and then click sign up.

Once your account is set up, you can then log in to the TeamViewer homepage and access all your partners or establish a quick connection without needing any software installed. This is super helpful if you are not at your computer and need to provide support to someone.

After you have your online account set up you can then go into the full version options and set up your username, email, and password in the options. This will allow others to remotely connect to your computer without needing to know the 9 digit ID number. Instead they can just know your TeamViewer username and connect using that.

If you are setting up your own personal computer that you want access to from anywhere, then click on the security options and put in a password for unattended access. This will allow you to connect back to your computer even when no one is there to provide the session password. You should also set up your access control if you don't trust the people that you will be sharing your screen with. When you give someone full access, they literally have access to not only control your computer remotely, but they also have control to browse your hard drive remotely and send you files.

If the remote machine is running windows you will have an extra option for Windows logon. This will allow anyone with a user account on the local machine (or admins only) to log into the machine without needing to know the session or unattended password or temporary session password.

You can also click on remote control options and set your access control when you are remote with other users.

You may also want to configure your custom invitation settings. This will configure sending invitation requests via email. Once you email the customer it will give them a link to download the QuickSupport client.

It may also be helpful under the advanced settings you can import and export reg files of all your settings or export an .ini file for use with TeamViewer portable.

Offering Remote Assistance

Offering remote assistance is going to be the key feature for most users of TeamViewer. Not only does it work from just about any computer via a web page, but it allows you to control anyone looking for help without them needing to install anything. To remote using QuickSupport have the person looking for help download QuickSupport for their platform at the TeamViewer website.

Alternatively, you could also send them an email if you set that up in the options as described above.

Note: QuickSupport is available for Windows and OS X only.

Once it downloads, have them run the application and provide you with the ID and password it shows in the window.

All you need to do now is type in the session ID into your TeamViewer window or through the website quick connect.

When prompted type in the 4 digit password they give you.

If you are connecting to a machine with Windows logon enabled then drop down the advanced options and select Windows authentication. Put in your username and password on the computer and click log on.

A new window will open with the computer you are connecting to. Depending on the security settings, you may automatically have control of the remote machine upon connecting.

The TeamViewer window will have a bar across the top by default which will give you quick access to useful features. Remotely rebooting the machine, switching sides (presentation mode), disabling user input, and connection settings are all in the top menu for you on any platform.

Note: If you are curious, yes reboot in safemode works flawlessly. You have to reconnect after the reboot, and the user has to log in again, but otherwise it works without a hitch. This is great for remote virus scans.

If you know you will want to connect to the computer more than once it would be recommended to install the full version of TeamViewer. Luckily that is available in the menu as well.

Note: Some items will be grayed out if they are not available on your platform.

If you have access, you can also send or receive files to the remote machine from the top menu. Click on file transfer and a new window will pop up. Your local hard drive will show up on the left and the remote hard drive will be on the right. Click the appropriate send or receive button depending on what you are trying to do.

If you already have the computer set up as one of your partners you can also right click on the machine in your partner list to send/receive files without needing to go remote.

Once you disconnect from the user you will be prompted to add them to your partner list if they aren't already there. Click yes if you plan on connecting to this computer again in the future.

You will also get one more prompt which is TeamViewer's way of trying to keeps it's users honest. Please do not take advantage of this free service they offer. If you are using this for any reason besides personal use, pay for the license. TeamViewer's licenses have no recurring fees and are pretty reasonable for small companies to have infinite flexibility when helping their users.

To remote from an iOS device you will need to install TeamViewer or TeamViewer HD for your device. Once the application is installed you will connect to a computer the same way as on a computer with the TeamViewer ID and password.

sshot-2010-08-30-[20-52-55]

Once you connect you will be able to control the remote computer as if you were sitting in front of it and can even use multi-touch to help navigate the computer.

You can click on the settings button in the bottom right to edit connection settings. You can also log in with your TeamViewer ID and you will have quick access to any partners you have set up on your computer or through the web site.

TeamViewer's Other Features

Presentation mode in TeamViewer is great for webinars or training more than one person at a time. To set up the presentation make sure you change your security settings under the options so that users do not have too much access.

You can then right click on one of your partners or have a user download the QuickSupport client and provide their ID information. Once you are connected you will have a panel on the right hand side that will allow you to chat, set up a conference call, and even give you a preview of what is on your screen.

From a Windows machine you can also quickly present just one window using the TeamViewer shortcut it creates on your window borders. This feature can be easily disabled from the same menu if you do not want to use it and it only shows the button when you are logged into TeamViewer full version on your computer.

If you have two Windows clients you can also set up VPN between the computers for gaming or access to printers on the remote machine. The first time you try to connect to another machine TeamViewer will need to install a new virtual network adapter that will be used to make the connection. Click yes at the below prompt and the network adapter will be set up for you automatically.

To connect to a remote machine with VPN, type in the client ID and click on the VPN option.

If the client is on a platform or version of TeamViewer that doesn't support VPN you will get an error below.

Once you are connected to a client via VPN you will get a new window that will have some buttons that will allow you to quickly verify the connection and browse the client machine. You can also connect to multiple machines at once following the same steps. Each active connection will show up in the drop down list in the following window.

If you click on share files via explorer a new explorer window will open with the clients IP address in the address bar. If you have set up file or printer sharing on the remote computer you will see those files here.

If you haven't set up file sharing for the files you need you can also try accessing one of the admin shares on the computer. Admin shares are hidden shares that allow network users access to browse the hard drive if they have permission. To access the main drive (C:) just put "\c$" at the end of the IP address. If you have access, the entire contents of the drive will be available for you to browse.

If you purchased a license of TeamViewer then you will also have the ability to customize the QuickSupport program with your own message and logo. The customize link can be found below the download for the regular QuickSupport.

You then just need to fill out a quick form asking what logo you want, font colors, and what you want the QucikSupport text to say. Optionally you can also enter a password so that the password isn't randomly generated.

Once you are done with the form generate the QuickSupport with the link at the bottom and you will get a preview before you download. Download the executable and it will work just like the normal QuickSupport. If you don't have a license for TeamViewer your session will be disconnected after five minutes.

You can also set up a web button that you can use to embed a help button on your own site. Once again this is just a simple form to fill out and then it gives you the HTML code to embed the link.

TeamViewer is more than just a remote assistance program. With tons of features, and most of them free to personal users, it's really a must have for those of you that provide tech support for your family and friends.

TeamViewer homepage

TeamViewer Portable


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