XO Experience

Nortel Tech Conference Day 3

2008-06-20T20:14:00.004-04:00

At the general session , Al Worden, an astronaut on the Apollo 15 mission, spoke about the engineering challenges during the Apollo program. It made me think about how all of the macro engineering of the engines and the micro engineering of the computers must all integrate perfectly, or the results could be fatal.I think OLPC could benefit from this kind of thinking by pairing some of the large scale problems with the XO laptop with software or hardware solutions.(and vice versa)

One of the other speakers today was Andy Lippman from MIT, who talked about Nortel's partnership with MIT and some of the benefits it has brought. He also showed some of the cool things the Media Lab and other sections of MIT re working on, besides the XO.Also seeing the concept XOXO pic again made me think of some of the cool things in our future.

I did not go to as many sessions today as I did on Monday, but some of the stuff today really inspired me. New technology focused schools, fully realized mobile broadband, and next generation (maybe we could call this Web3.0?) web apps are all areas that Nortel is working on,and the work I've seen looks amazing.

Tomorrow I head out to the Kennedy Space Center, which will be really interesting to see with a bunch of engineers.

Nortel Technical Conference Day 2

2008-06-18T18:14:00.005-04:00

Other then the general session,which focused on the changing face of college education, the events on Tuesday focused on very technical discussions which had no direct relevance to me. So Michael and I decided to go to Universal Studios.

Once we got there the first thing we did was ride all of the major coasters in the park.The best was probably "The Hulk", a giant steel launched coaster with many loops and corkscrews.

Of course, it was always fun to try out the "wimpier" rides. Many of them were in the shade and helped us escape the heat of Florida in the summer.

After exhausting ourselves at Universal, I got a rather funny urge to see how much it costs to see a movie in the universal resort area , completely out of curiosity and totally expecting it to be outrageous. Surprisingly, its actually about 30 cents cheaper to see a movie here then in DC.

Both Michael and I had been wanting to see "The Incredible Hulk " when we got back to DC, so we decided to just go now and complete the day. It definitely lived up to the hype and I would encourage those who are fans of the comics to see the movie.

For dinner we went to Boston Lobster Feast , which had a buffet of all you can eat lobster and other seafood.

All in all , a great day of relaxation in preparation for busier days ahead.

Nortel Technical Conference, Day 1

2008-06-17T11:28:00.005-04:00

One of the many opportunities that working with Nortel LearniT has given me has been an invitation to the Nortel Technical Conference in Orlando,Florida. I attended discussions ranging from Nortel's business plans to ideas to enhance the Vancouver Olympic Games.
Some of the sessions I attended focused on mesh technology which is of great interest to our readers so I will elaborate a bit on those.

On Monday, I gave a demo of the mesh technology on the XO, which generally worked out successfully. First, 4 XO's were set out sharing the Chat application, all connected using a Schoolserver. Then I had volunteers try out Record and Distance sharing the former of which worked quite well, the latter not so much. I suspect that Distance is rather sensitive to version differences, so I will have to look into that. After that I showed off some of the schoolserver technology such as the DNS configuration that allows for the Schoolserver to push out a domain of the teacher's choice for the students to connect to. Incidentally all XO's connected through the school server correctly utilized web caching , the first time I've gotten it to work flawlessly.

The session before mine also focused on an implementation of mesh networking. Bob Withrow, the Director of Networking Research at Nortel, gave a demonstration of open 802.11s technology (seen at http://www.open80211s.org/) used to route calls locally rather then through a carrier. For his demo, he used 4 XO's hooked up with special antennae combined with several neo1973 phones running the openmoko software.The XO's were supposed to be used to measure mesh activity and to show how the link reconfigured as the phones moved , but the heavy wireless traffic at the conference prevented this demonstration from working correctly.I did learn quite a bit out how mesh could be implemented into consumer products and the challenges involved.I wonder if Google has looked at this for its Android platform.

More coming soon!

Matt Gallagher

Bugs... They're everywhere!

2008-05-10T19:51:00.003-04:00

After reciving two new Mass Production XOs from OLPC via the developer program, I've been testing them like crazy. I've reported 8 new bugs, and more are to follow.

In addition, I submitted a simple patch to Sugar to fix an annoying traceback that is issued when "sugar-install-bundle" is called with no arguments. Hopefully it will be accepted soon.

I'm just getting my feet wet so far.

Pycon 2008 Recap

2008-03-31T00:34:00.004-04:00

I'm sorry that this is quite a bit late, but I 'd like to fill you in on some of the interesting thing that were accomplished at PyCon.

(Pic of attendees in main expo hall)

One of the first big OLPC related events at Pycon was a keynote by former OLPC employee Ivan Krstić. He focused on how the OLPC facilitates learning and the ways in which Python helps with that.

(Pic of Ivan's keynote)

Some of the other talks that focused on the OLPC project addressed issues that have plagued software development on the platform, such as a lack of proper unit tests in many applications.

(pic of slide from OLPC unit testing talk)

The second part of the conference that I attended was the OLPC Sprint. (for those who don't know, a "sprint" is a period of rapid collaborative development on a specific project, similar to the "hackathons" of OpenBSD fame)
Led by Mike Fletcher, the OLPC group made significant progress in creating several useful applications for the XO despite having no official representation from the OLPC organization( a fact that disappointed some)

(Pic of OLPC sprint room)

I worked quite a bit with James Hancock, the lead developer of GASP, as he started to work on an XO-friendly networking API and further Pippy (and possibly Develop ) integration.

(Pic of James Hancock)

An unexpected but familar face came in the form of Mel Chua , who I had worked with before on other OLPC related projects. She has been a great source of constructive criticism and advice for GASP , as well as helping us out with documentation.
(Pic of Mel Chua)

By the time I left PyCon, I realized that the OLPC project has many long struggles ahead, but there are plenty of people ready to meet the challenge head on.

Hello from PyCon 2008

2008-03-16T17:05:00.004-04:00

PyCon 2008 was huge this year. Over 1000 people attended -- a 70% increase from only a year ago. The OLPC presence is everywhere. Participants used them to browse the web and take notes at presentations.

This morning one of the Plenary talks was an OLPC Update by Ivan Krstic. He gave a keynote at PyCon last year, so it was an good opportunity to look back and see how far the project has come in the last year. Most exciting was seeing his pictures from Uruguay and Peru, where the first two XO deployments are taking place.

I attended a morning talk titled "Programming for the One Laptop Per Child laptop" by Charles Merriam. It was a good discussion of what to expect from developing software for the XO and helped prepare us for the coming sprint.

This evening we are starting the sprints. Matt Gallagher, James Hancock and I are at the Twisted with Games BOF (Birds of a Feather). James is eager to add networking support to gasp, and the twisted developers are talking with him about using twisted to do that.

In the "it's a small world" department, Mel Chua showed up at the start of our sprint. She is a student of Dr. Allen Downey, the original author of How to Think Like a Computer Scientist. I've never met Allen face to face, but I've been working with him for several years on the book. Mel knew about gasp and is interested in sprinting with us.

That's all for now. I'll report back on the progress of the sprint in a day or two.

Logging on #gasp!

2008-03-12T09:58:00.006-04:00

Jason Straw came through, using the Arlington Career Center webspace to host our bot and logs. You can see what we've been up to here. Also, the user mailing list archive is up here, so for those what want to pitch in, or just keep tabs on the project, check it out.

In other news, expect to see GASP 0.2 packaged for Ubuntu and the XO within a week! Exciting times, folks.

From the logs:
jhancock__: ayanami: I don't think I have meet you before?
ayanami: jhancock__: Error: "I" is not a valid command.

Logging on #gasp?

2008-03-07T10:35:00.002-05:00

The IRC channel #gasp on irc.freenode.net is going to be where we hold meetings and discuss development. For this to be useful, we'll need automatic, publicly available logging, so we don't have to worry about record-keeping on our own machines (and XOs) and can see what happened at past meetings.

Our best bet for this is a piece of software called supybot, paired with some scripts that create and update web pages as logs are created. For hosting, we turn to our sponsors at Nortel. I've asked Jason Straw for help hosting the bot and storing the logs at xo.nortellearnit.org.

DNS school server craziness

2008-03-03T11:44:00.002-05:00

Just a quick post, but I've been having some issues with the schoolserver nameserver not syncing with the external schoolserver. On the XO, removing the schoolserver DNS allows internet access,but prevents any access to other schoolserver features.Can anyone shed any light on this?

Looks Like We Need Flash

2008-02-28T10:13:00.002-05:00

Michael Connet suggested to me that we investigate using the 2D vector graphic and animation tools in eToys to develop tutorial animations for the XO. Yorktown High School student Jamie Boisture spent a week and a half investigating Squeak. I followed with a conversation on the #squeak irc channel. Our conclusion: while it may be "possible" to generate 2D animations with Squeak, the conceptual differences between Squeak and flash are enormous, and this is not a practical option for our illustrator, Phi.

To give you an idea of the kind work Phi does, take a look at this. If anyone knows of example animations made with eToys that look as good as what Phi did here, please let us know.

School Server in the house!

2008-02-22T20:56:00.002-05:00

Editors note: Pictures will be added to this post as soon as I get a hold of a camera tomorrow

Well the day has finally arrived. I have successfully set up a functional OLPC XS School Server. Thanks to the folks at Nortel LearnIT, who managed to procure an active antenna for us, we finally got a chance to get started.

For the actual server , I used a system76 laptop (it's an older model which is no longer offered by them unfortunately) . Installation was simple, with a simple boot to a fedora live environment followed by an installation script. After that , the fun could begin.

After plugging in an active antenna, I then booted up an XO and it immediately connected to the server. I tested this by running "ping schoolserver" on the XO, which replied successfully, confirming connectivity and the XS servers DNS server was functioning correctly.

One thing that gave me a bit of trouble was when I attempted to register the laptop to the server. The first time I tried, both the laptop and the server froze for a long period. After they became functional again , I noticed that the laptop had failed to register. Trying it a second time however , successfully paired the laptop with the server.

As I had other classes , that was all I got to test. The good thing is that I will be bringing the server to the event at Nortel's offices tomorrow and will attempt things like patching and software distribution.

GASP is a Launchpad Featured Project!

2008-02-22T20:52:00.002-05:00

FFM, the maintainer of GASP, told me today that we've made the Launchpad's "Featured Projects" list! We're in the illustrious company of such projects as Miro, SchoolTool, Bazaar, and Ubuntu itself. Go to Launchpad.net and see for yourself.

GASP, Python, and the XO

2008-02-20T10:09:00.002-05:00

GASP, the Graphics API for Students of Python, provides an easy and fun way for learning programmers to write games and other programs using colors, shapes, pictures, and movement. It's based on the PyGame library, which, though full-featured, is too complicated for beginners to easily learn.

It's also a perfect match for the XO. The latest version of Pippy, the built-in Python API on the XO, includes some simple games and examples, all written in PyGame. GASP, along with its sister package GASP-Games, will let users of the XO play games, see how they work, and write their own.

My fellow Yorktown Student David Cooper has made great improvements to GASP recently. The 0.2 version (currently in development and testing) includes new functionality that allows for easy pausing. It also speeds GASP up considerably, allowing it to run much smoother, even on platforms like the XO with limited resources. I'm documenting and improving that code, and yet another YHS student, "FFM", is the man in charge, running and packaging the project.

GASP is the future of game development on the XO. As it becomes a stable product and the Games package starts to assemble a set of examples, you'll be able to start writing games of your own.

Copy files to and from the journal

2008-02-13T16:07:00.002-05:00

To get started, download the following files to the XO

The usage for these files are as follows:

Usage for to: python   -m MIMETYPE [-t TITLE] [-d DESC] [-T tag1 [-T tag2 ...]]
Usage for from: python  [-o OBJECT_ID] [-q SEARCH_STR] [-t SEARCH_STR] [-m] OUTFILE

New DC learning club meeting

2008-02-12T08:39:00.001-05:00

A new meeting of the OLPC Learning Club DC is scheduled for Saturday, Febuary 23th and is to be hosted at the Nortel offices at 101 Constitution Avenue, NW. Suite 325 East, Washington, DC 20001

We will be working on improving our graphics API, GASP, as well as writing some examples to be included in Pippy. We will also be using a block of the time to mesh. It will run for 9am to 1pm.

Yes, but is it called the GNU XO?

2008-02-06T14:32:00.000-05:00

According to OLPC Nepal, Richard Stallman's "weighed in" in support:

Stallman has always stressed for the need to use free softwares in educational institutes. The OLPC project has only made him happier.

Report on DC OLPC Learning Club meeting at DC Cares

2008-02-06T11:39:00.000-05:00

Mike Lee has just posted an account of the January 31 meeting of the OLPC Learning Club at DC Cares downtown offices, which several of us attended.

New OLPC Handbook

2008-01-15T08:52:00.000-05:00

Our friends from OLPC in Austria have been working on developing a new handbook to support XO laptop users. Here is some background on what they've done:

"We finally managed to finish the first few chapters of the Activity Handbook that we've been working on. The purpose of this handbook is to provide you with all the information you need in order to get started with software development for the OLPC XO."

The current draft includes the first four chapters...

# Welcome to the Activity Handbook!
# Introduction to Sugar
# Preparation
# Sugar Basics

..which basically serve as an introduction to Sugar, to setting up your machine for Sugar development (emulation, sugar-jhbuild, Live-CDs) and writting a simple HelloWorld activity. We're going to expand the handbook over the coming weeks to include chapters about using the journal, collaboration, using the various XO input devices and sugarizing software. So stay tuned for updates!

You can find the Activity Handbook project page (with more information about the project, how you can contribute, etc.) at

http://www.olpcaustria.org/mediawiki/index.php/Activity_handbook and in case you're feeling lazy you can simply click on the following link for a direct pdf download:

http://www.olpcaustria.org/mediawiki/upload/a/af/Handbook_20080113.pdf

XO's coming to US schools

2008-01-15T00:37:00.000-05:00

In a bit of a reversal the OLPC project will soon be offering US schools the opportunity to participate in the OLPC program. The project will be based in Washington D.C. , giving us an ideal opportunity to continue work here in the States. Expect updates on this in the coming weeks.

Details: http://www.pcworld.com/article/id,141298-c,notebooks/article.html

We're back!

2008-01-11T11:09:00.000-05:00

After a week of technical issues, we have Internet access again and back in business .

Assisting with new users

2008-01-03T08:09:00.000-05:00

As the first donors to the G1G1 program recived their laptop right before christmas, there was a large amount of new users who had lots of questions about how to use the XO.

There are many outlets for support questions to allow people to give and recive help in the way they are most comfortable, such as:

Internet Relay Chat (IRC) - Volunteers on the freenode IRC network, such as myself, providing live support to new users
Mailing lists: community-support (Also avalible via http://olpc.osuosl.org/forum/ ), olpc-open, grassroots
help AT laptop.org - group of thirty or so volunteers (such as myself) who answer the flood of emails that arrive every day

People who wish to assist with the help AT laptop.org address should email Adam Holt at holt AT laptop.org

Flash process simplified

2007-12-29T12:35:00.001-05:00

After many hours spent on IRC, we have simplified the instructions for adobe flash to two simple commands:

su -
rpm -i http://fpdownload.macromedia.com/get/flashplayer/current/flash-plugin-9.0.48.0-release.i386.rpm

Update information for "normal" users

2007-12-23T14:05:00.000-05:00

I looked at the information on the wiki about updating the OLPC's software, and saw no info targeted for the G1G1 users. I thus decided to take the initiative and write my own (very) short instructions on how to update from stable to stable for "normal" users at the wiki.

These instructions work for all the users who have G1G1 laptops (build 650 or later), and do not work for earlier versions. People with legacy builds should try the Autoreinstallation image instructions.

DC XO Learning Club meetup!

2007-12-21T11:33:00.000-05:00

On Wednesday, I went to the first meetup of the OLPC Learning Club. It had a great turnout with the official count being at 42 people.(however, some people came after that count was taken.) I talked with many great people from both the enthusiast and volunteer expert sides of things.

Pictures can be found here:http://www.flickr.com/photos/tags/olpclcdc/ (my flickr account is mattva17a)

XO's in Iraq

2007-12-20T22:45:00.000-05:00

I went to an XO users meetup in D.C. on Wednesday , but I'm still trying to get some background info for some of the stuff I want to discuss in that post. So today I'd like to share an article that that my Dad, who is currently at the US embassy in Iraq , sent me.He works with some of the people who are supporting the XO project in Iraq, so I'd like to draw attention to their efforts.

Link:http://iraq.usembassy.gov/pr_12172007.html

It's an very encouraging sign for both the country and the XO project!

Top10: Mesh Networking

2007-12-17T07:40:00.000-05:00

Here's a bunch of tips to make mesh networking smoother,screenshots to be added when I figure out why my camera appears to be using the old "plug and pray" methodology.

You must go all the way out to Neighborhood view to view local XO's at first. To get them into friends view you have to invite them first(right click, then "invite")
Any activity you start will show up in th neighborhood or friend view as the activity ivo with a xo icon next to it.
Active Antenna can be used as wireless repeaters as long as they have power.
IMPORTANT, setting up a mesh network near a AP with WDS can wreak havok, check your AP settings first.
The mesh can be connect to by normal computers by accessing the ssid "olpc-mesh", however depending on your wireless card this may not work or will crash your computer.
If any computer in the mesh has internet , they can all get access to it.
The school server can use the mesh to distribute software (to be tested)
Mesh traffic can be filtered ,but its not something a novice user should attempt.
Mesh networking uses the 802.11s draft standard, which many new AP's and cards have partial support for.
Though work has been done, I still find the mesh to be power hungry, plug your XO in while using it.

More flash test results, and other random mutterings

2007-12-12T08:08:00.000-05:00

As of joyride 1405, using the instructions at the wiki causes Browse to crash upon loading of any page with flash.

I have tested all of the recent versions to see if flash had made a regression, but no version of flash9 will run after 695.

For some reason, WPA still is finicky. Some keys work, but when they are changed, the laptop stops working.

State of flash support

2007-12-11T07:38:00.000-05:00

Here is the status of flash support on serveral XO software builds :

Build 625 (Gnash support out of the box(no GV), Flash installable but slow,Increase in speed with config file changes)

Build Ship.2 (Gnash support out of the box(no GV), Flash installable but slow,Increase in speed with config file does not work )

Latest Joyride (Gnash support out of the box(no GV), Flash install breaks web browser?(luke,edit with more specific infomation)

A weekend update post with more information is forthcoming.

Bugs, bugs, and more bugs

2007-12-06T12:47:00.000-05:00

Sorry I haven't posted in the last few days, I have been busy finding bugs and reporting them.
Here's a summary of a few:

Clipboard items cannot be copied to clipboard - When a text snippet is saved to the Journal, it cannot be re-added to the clipboard later.
Files are written with wrong extension - Documents written in Write are saved with an ODF extension when copied to a flash drive, even though their format is ABW.
SimCity does not quit when closed in donut - Violates the Sugar Human Interface Guidelines, as it shows an "Are You Sure" message when user quits via the donut, it should quit without further prompts.

Networking QuickTips

2007-12-05T11:01:00.000-05:00

Here's a couple of things to try when connecting to encrypted networks on the XO:

Be very specific about your encryption type, the XO's network autoconfiguration needs some work
On a WPA network ,if you have an key that looks like a password, select ascii for the key type. If it looks like a long random sequence, it is probably a hex key.
On a WPA network, I have had improved success by entering the full hex key, even if the key is normally a string (I will edit this post with a link to a converter , can't find it ATM)

Weekend Update

2007-12-04T10:09:00.000-05:00

This weekend has been filled with both successes and failures:
Successes:

Got wireless working at school 100% of the time for the XO

Simple games work in gasp at an acceptable framerate

Nasty black box is partially fixed in gasp.

Failures:

My solution for efficient flash payback does not work in latest firmware

Goals for next week:

Flash!
Simple p2p gasp games between XO's
Increase WPA networking success rate to above 50%

QuickGuide: Changing the Language to English

2007-11-30T19:21:00.000-05:00

Although not obvious, it is fairly trivial to change the language of the CLI on the XO-1 in the pre-joyride builds.

Switch to a developer's console via Alt + =
Change to root using su - root
nano /etc/sysconfig/i18n
Change the LANG to "en_US.UTF-8"
Reboot

For a permanent solution, see the wikipage on tag editing.
Now, although part of the initial boot sequence may still be in the previous language, the terminal and sugar will all be in English.

Note: To change the languge in sugar, use sugar-control-panel

New XO

2007-11-30T10:52:00.001-05:00

Thanks again to Micheal Connet and Julie Fletcher over at Nortel for providing us with another laptop.A post on some networking experiments will be forthcoming.

Gasp running on XO

2007-11-28T18:53:00.000-05:00

Here is a quick pic of gasp running using the developer terminal.
As you can see it creates an activity window that fills the screen, but does not fill it, leaving black space. A solution may be to change the default screen size in gasp.

QuickGuide:Renaming your XO

2007-11-28T17:48:00.000-05:00

As requested, this is the fastest way I have found to rename the XO.

1.Open up the developer console (Alt-= on mine,may be different on others)
2.Go to the terminal
3.Open the file ~/.sugar/default/config with your favorite CLI text editor
4. Find the line that says nickname and edit to it your liking.
5.Restart sugar (ctrl-alt-backspace) or restart the computer
6.Voila, the laptop is now renamed!

QuickGuide: Installing a XO activity using removable media

2007-11-27T14:36:00.000-05:00

Here's a quick tutorial on installing a package from a usb thumbdrive or sd card:

On a computer with internet access download a .xo package onto your removable device.
Insert your usb drive or sd card (usb ports are under the "ears, sd slot is on underside of monitor)
Wait a minute for the device to mount.
Using the web browser activity, go to "file:///media"
Find your device and click on it.
Find the package and click it. The main Sugar frame should come out , then hide again.
Wait a minute or so , and your activity should appear in the XO launcher.
Enjoy

Results from first day

2007-11-27T01:18:00.000-05:00

The XO seems to have some strange issues with my wireless at home and I was only able to get it online for 30 minutes but in that time I learned several things.

You can share activities across the whole Internet
Google Video does not work (due to gnash lacking .flv file support apparently) Maybe I can install regular flash?
Normal computers can connect to the XO's mesh network (though it crashed my network card after a while).It shows up as "olpc-mesh"
Support for WPA appears to be very finicky

After trying for several hours to get it back online, I decided to try a firmware upgrade using a USB thumbdrive.At first it was giving me an error about "wrong machine type" but I found that taking it in 2 firmware steps worked fine.

Then I decided to start messing around with gasp , and I figured out several things

In some areas of the system ,gasp works just fine natively but if it is part of an activity it needs(or rather pygame does) the olpcgame wrapper.
Its better suited for building activities then being an activity itself
Someone has already mentioned gasp as a useful game development tool on the game development page (this certainly was not me)
Pippy example code would be really sweet.

Then ,just for fun , I decided to find out if it was possible to get activities installed without internet access.The answer is that yes it is possible,but you still have to go trough the browser(only to your usb drive instead of a website).So installed Sim City, which runs great.
Of course the nostalgia ran out in about 10 minutes,but it was still fun.

Well, hopefully I can figure out my networking issues and dig deeper into this great device.

Introducing the XO

2007-11-26T10:43:00.000-05:00

Thanks to Jeffrey Elkner,Micheal Connet and our friends at Nortel for allowing me to test the XO laptop and attempt to get some of our learning activities working on it.

Information on the laptop
Color: Green(only color available at the moment)
Hardware Revision: B4-15
Software Revision : Unknown now(but working on it :) )

Current Plan for first day:
1. Change language to english
2.Investigate Pippy
3.Attempt basic gasp compatibility (draw a window. or activity)
4.Check out some of the basic networking capabilities of the XO