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Jee Labs: Carrier Board
Yesterday’s enclosure has started a new ball rolling…
I’ve decided to support a mix of plugs with room for prototyping. A first mockup:
This will be made possible by a new Carrier Board with tons of different ways to connect to:
Ports 1 and 4 each have four positions for adding plugs. All connected in parallel, so you can hook up more than one if you’re using a bus such as I2C on that port. Note the big dots, identifying the PWR pins for orientation.
Ports 2 and 3 can be plugged in, but their pins are also brought out to a series of 6-pin headers in the bottom right. These 18 pins bring out everything else, including full SPI, hardware I2C, and the serial I/O lines.
Lastly, the SPI/ISP and the PWR/SER/I2C connectors from the JeeNode have been duplicated.
Note that you can also ignore all that plug stuff and just insert your own board into the entire bottom row, using five 6-pin headers. That gives you access to all the pins on a JeeNode. Here’s a board I’m going to try out:
There’s a split down that board, to allowing breaking off and using either side independently. The left side is essentially a dual JeePlug and will fit in all the 2-port positions on the Carrier Board.
These boards will be included in the next round of PCBs. We’re back to the “Patience, grasshopper!” part…
OLPC News: OLPC Kenya Video: OLPCorps Kibwezi XO Deployment
Kibwezi is a small rural town located in the arid region of Kenya, about half-way between the capital of Nairobi and the coastal city of Mombasa. Many of the students come from the surrounding farms. Their families survive on subsistence agriculture and many do not have electricity or running water in their homes.
The access to XO laptop computers stirs emotions of pure joy inside of the children as you can see by this video:
Read more about this deployment XO laptops on the OLPCorps Kibwezi blog.
.Get OLPC News on Kenya - enter your email address:
Sebastien Bourdeauducq, lekernel.net: Contorsions Technologiques – Call for Proposals
La Suite Logique hackerspace invites hackers from all around the world to participate to the first edition of Les Contorsions Technologiques that will run from April 30 to May 2 at la Suite, alternative cultural space in the middle of Paris, France.
What are Les Contorsions Technologiques ? It's a mix of workshops, exhibitions, demonstrations and performance, in a setting favorable to discovery, experimentation and exchange. It's an invitation to grab the tools and take the initiative back, to shatter norms and reshape our universe. It's the celebration of all the creative, funny or spectacular uses of technology, and knowledge sharing.
Help us to spread the word by diffusing this Call for Proposals!
--[ Call for Proposals ]----
Les Contorsions Technologiques revolve around three big ideas:
- exhibiting tangible technology applications, as they are easier to feel;
- guiding people on their meeting with technology;
- inspire people into following our footsteps and play with technology.
We decided to not have lectures, and to ignore computer-only subjects. But do
not worry, there is still a wealth of topics. If you are unsure about this,
here is a list of possible topics:
* Electronics Basics
- all arduino things
- blinky boards
- squeaky circuits
- robotic runts
- radio transmissions
* Day to day
- TV-B-gone and friends
- RFID jewelry
- RFID killers
- makerbots and RepRap
- DIY domestic appliances
- DIY biotechs
- DIY clothing
* Art and games
- brainmachine
- demomaking
- 8-bit music
- puredata and supercollider
- object tracking
- physical peripherals
- circuit bending
* Urban hacking
- LED throwies
- laser tag
- building fronts as giants screen, one pixel per window
* Science
- Tesla coils
- quadrocopters
- autonomous drones
And, of course, everything we might have forgotten ...
Finally, we have the pleasure to offer you a quite uncommun exhibition medium,
the front of a 7 story building. Be megalomaniac, we have the resources for!
(more information on this very soon)
--[ Submissions ]----
Send your submissions at cfp@contorsions-technologiques.org before April 3,
23:59 GMT. Acceptance notifications will be sent around April 8 and the
schedule will be published around April 15.
Your submissions shall be a Plain Text, PDF, OpenDocument or RTF file, and
shall contain the following informations:
- type
- summary (1000 characters max)
- lang (fr/en)
- logistics need (tables, chairs, power, light, sound)
- contact information (at least an e-mail address)
- if applicable, a link to pictures or videos
Here are the submission types we accept:
- workshop: one or two people help to realize a small project (30 to 90 min of
work, no big hardware. Soldering iron is OK, drill press is not)
- exhibition: present your realizations and do interactive demonstrations
- demo/performance: be the star during 10 to 30 minutes. e.g.: tesla coil,
quadrocopter flight
- concert: between 30mn and 2h
Don't forget: everything is possible, as long as you drop us some lines to talk
about it.
--[ Practical Informations ]----
Les Contorsions Technologiques are organised without budget by volunteers on
their free time. Therefore, we cannot help with travels or accomodation
expenses, but we might be able to organise makeshift accomodation for
participants. Please contact us for more details.
Check out our web site for the last updates and other stuff:
http://www.contorsions-technologiques.org/
This call for proposals is available here :
http://www.contorsions-technologiques.org/cfp.html
Subscribe to the annonces mailing-list to be warned of the last updates:
http://www.contorsions-technologiques.org/cgi-bin/mailman/listinfo/annonces
Meet us on IRC :
irc://chat.freenode.net/#lasuitelogique
Send us an e-mail:
contact@contorsions-technologiques.org
-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
La Suite Logique invite les bidouilleurs du monde entier à participer à la
première édition des Contorsions technologiques qui se déroulera du 30 avril au
2 mai à la Suite, lieu culturel alternatif situé au coeur de Paris, France.
Les Contorsions Technologiques, c'est un mélange d'ateliers, d'expositions, de
démonstrations et de performances, dans une atmosphère propice à la découverte,
l'expérimentation et l'échange. C'est une invitation à prendre les outils et
reprendre l'initiative, à briser les normes et remodeler notre univers. C'est
la célébration de toutes les utilisations créatives, amusantes et
spectaculaires de la technologie, et du partage de la connaissance.
Aidez-nous à répandre la nouvelle en faisant tourner cet Appel à Proposition !
--[ Appel à Propositions ]----
Voici les trois axes qui gouvernent les Contorsions Technologiques :
- matérialiser la technologie pour mieux la faire ressentir ;
- guider le public dans sa rencontre avec la technologie ;
- donner au public l'envie de se lancer sur nos traces et de jouer avec la
technologie.
Nous avons volontairement décidé de ne pas faire de conférences, et d'ignorer
les sujets purement informatiques. Mais n'ayez crainte, il reste amplement de
quoi faire. Si vous en doutez, voici une liste de sujets possibles :
* Électronique basique
- arduino et compagnie
- loupiottes qui clignotent
- circuits qui couinent
- robots riquiqui
- transmissions radio
* Quotidien
- TV B gone et consors
- joaillerie RFID
- tueurs de RFID
- makerbots et ReprRp
- électroménager DIY
- biotechnologies DIY
- vêtements DIY
* Art and jeux
- brainmachine
- demomaking
- 8-bit music
- puredata et supercollider
- object tracking
- périphériques physiques
- circuit bending
* Espace urbain
- LED throwies
- laser tag
- écrans géants en facade, un pixel par fenêtre
* Science
- bobines de Tesla
- quadrocopters
- drones autonomes
et bien sûr, tout ce que nous aurions pu oublier...
Enfin, nous avons le plaisir de vous offrir un terrain d'exposition peu commun,
la facade d'un immeuble de sept étages. Voyez grand, nous en avons les moyens
(plus d'informations très prochainement).
--[ Modalités de soumission ]----
Envoyez vos soumissions à cfp@contorsions-technologiques.org avant le 3 avril,
23h59 GMT. Les notifications d'acceptation seront envoyées vers le 8 avril et
le programme final sera publié autour du 15 avril.
Vos soumissions doivent être dans un des formats Plain Text, PDF, OpenDocument
ou RTF, et doivent contenir les informations suivantes :
- type
- résumé (1000 caracteres max)
- langue (fr/en)
- besoins logistiques (tables, chaises, électricité, lumière, son)
- informations de contact (au moins e-mail)
- éventuellement, un lien vers des photos/vidéos.
Voici les types de soumission acceptés :
- ateliers : un ou deux instructeurs aident le public à réaliser un petit
montage qui prend de 30 à 90 minutes, ne demandant pas de matériel lourd (fer
à souder : OK ; perceuse a colonne : KO)
- exposition/installation : présentez vos réalisations au public et faites de
petites démonstrations interactives
- démonstration/performance : soyez le centre de l'attention pendant 10 à 30
minutes. e.g.: tesla coil, quadrocopters
- concert : entre 30mn et 3h de concert
N'oubliez pas : tout est possible, il suffit de nous laisser un e-mail pour en parler.
--[ Infos pratiques ]----
Les Contorsions Technologiques sont organisées sans budget par des bénévoles sur
leur temps libre. Par conséquent, nous ne pouvons aider à financer les déplacements
ou l'hébergement, mais nous pouvons tâcher d'organiser un hébergement de fortune
pour les exposants. Contactez-nous pour plus de détails.
Surveillez notre Site Web pour les mises à jour et autres nouveautés :
http://www.contorsions-technologiques.org/
Cet appel à proposition est disponible ici :
http://www.contorsions-technologiques.org/cfp.html
Inscrivez vous à la liste de diffusion annonces pour être averti des dernières
nouvelles :
http://www.contorsions-technologiques.org/cgi-bin/mailman/listinfo/annonces
Retrouvez nous sur IRC :
irc://chat.freenode.net/#lasuitelogique
Envoyez nous un e-mail :
contact@contorsions-technologiques.org
Chitlesh Goorah: Nedits Ctrl-y for emacs
Nedit has a very cool feature and I’ve even seen people using gvim have something similar. However emacs for some reason doesn’t. Is it because they don’t have users of their same field of application? Well who knows.
The feature in question that with Ctrl-y on Nedit one can open a file whose filename and path are listed in a text file just by placing the cursor on that
filename. e.g
After several nights roaming online for a possible solution with emacs, I ended thinking that there is no generic for this. Hence I ended up writing the following lisp code myself with my 4-hours experience with lisp.
The objective is there is an environmental variable for each projects’ path and that each has specific technology files (LEF,Liberty(ccs,ecsm,…) for pads, sram, rom, analog modules, …… One should be able to open the $(SCRIPTS_HOME)/definitions.tcl (with a shortcut i.e Ctrl-Y) within emacs itself , instead of ctrl-x-f ?
;; ;; Nedit file open with control-y ;; (defun cgo-open-this-file (arg) "Copy lines (as many as prefix argument) in the kill ring" (interactive "p") ;; select whole word (let (b1 b2) (skip-chars-backward "^<>“[\"‘") (setq b1 (point)) (skip-chars-forward "^<>”]\"’") (setq b2 (point)) (set-mark b1)) ;; grab selected word and start processing it (setq filename (if (and transient-mark-mode mark-active) (buffer-substring-no-properties (region-beginning) (region-end)) (thing-at-point 'symbol))) ;; identify a environmentalvariable (setq envvar (replace-regexp-in-string ".*$(" "" filename)) (setq envvar (replace-regexp-in-string ").*" "" envvar)) (setq envvar (getenv envvar)) (message "envvar %s" envvar) ;; replacing the environmental variable (setq envvar_replacement (replace-regexp-in-string "\$(.*)" envvar filename)) (message "file %s" envvar_replacement) (find-file envvar_replacement) ) ;; optional key binding (global-set-key "\C-y" 'cgo-open-this-file)This code can be improved to support multiple env variables or any thing you would like, However it works and suits my application. Feel free to post a better solution 
Arduino: Arduino on Ekstra Bladet Nationen.tv
Ekstra Bladet is a Danish paper that has a quite large online version. This week they have a small online TV documentary about Arduino’s presence at the OSD conference in Copenhagen last week. We cannot embed their video in our site (they give no chance to do so) but visit this link to see it. If you watch the clip you will notice there is a Pong game made with a series of RGB LED matrixes by the guys at BSD-DK, as well as a whole display of different projects that can be made with Arduino … that was a nice job! For the next Open Source Days, please remember I live just across the Oresund, and send me an invitation, thanks 
Arduino clip on Ekstra Bladet March 2010
Arduino: The National Association for Amateur Radio (US)
AARL's Quiz for March 2010
The AARL is the US National Association for Amateur Radio with over 150.000 members. This month they published a Quiz on their website that included a question about the term “Arduino”. We have been getting some visits to our website from them during the last days. If you are into electronics in general and radio in particular, you should maybe take a look at their website. Here some facts:
By 1914, there were thousands of Amateur Radio operators–hams–in the United States. Hiram Percy Maxim, a leading Hartford, Connecticut, inventor and industrialist saw the need for an organization to band together this fledgling group of radio experimenters. In May 1914 he founded the American Radio Relay League (ARRL) to meet that need.
Today ARRL, with approximately 157,000 members, is the largest organization of radio amateurs in the United States. The ARRL is a not-for-profit organization that:
- promotes interest in Amateur Radio communications and experimentation
- represents US radio amateurs in legislative matters, and
- maintains fraternalism and a high standard of conduct among Amateur Radio operators.
At ARRL headquarters in the Hartford suburb of Newington, a staff of 120 helps serve the needs of members. ARRL is also International Secretariat for the International Amateur Radio Union, which is made up of similar societies in 150 countries around the world.
Holger "zecke" Freyther: Using setitimer of your favorite posix kernel
What is the interval itime?r
The interval timer is managed and provided by your kernel. Everytime the interval of the timer expires the kernel wil send a signal to your application. The kernel is providing three different interval timers for every application. The different timers are for measuring the real time passed on the system, the time your application is actually executed and finally the profiling timer which tmes the time when your application is executed and when the system is executing on behalf of your application. More information can be found in the manpage with the name setitimer.
Why is it useful?
In the QtWebKit Performance Measurement Utilities we are using the interval itimer as the timing implementation for our Benchmark Macros. To be more precise we are using the ITIMER_PROF to measure the time we spend executing in the system and in the application, we are using the smallest possible precision of this timer with one microsecond. The big benefit os using this instead of elapsed real time, e.g. with QTime::elapsed, is that we are not depending so much on system scheduling. This can be really nice as even with a lightly crouded system we can generate stable times, the only thing influecing the timing is the MHZ of the CPU.
How is it implemented?
It is a kernel timer, this means that it is implemented in your kernel. In case of Linux you should be able to find a file called kernel/itimer.c, it defines the syscall setitimer at the bottom of the file. In our case the SIGPROF seems to be generated in kernel/posix-cpu-timers.c in the check_cpu_itimer routine. Of course the timer needs to be accounted by things like kernel/sched.c when scheduling tasks to run...
How to make use of it?
We want to use ITIMER_PROF, according to the manpage this will generate the SIGPROF. This means we need to have a signal handler for that, then we need to have a way to start the timer. So let us start with the SIGPROF handling.
Elapsed time handling
static unsigned int sig_prof = 0;
static void sig_profiling()
{
++sig_prof;
}
The signal handler
struct sigaction sa;
sa.sa_handler = sig_profiling;
sigemptyset(&sa.sa_mask);
sa.sa_flags = SA_RESTART;
if (sigaction(SIGPROF, &sa, 0) != 0) {
fprintf(stderr, "Failed to register signal handler.\n");
exit(-1);
}
Start the timer
tatic void startTimer()
{
sig_prof = 0;
struct itimerval tim;
tim.it_interval.tv_sec = 0;
tim.it_interval.tv_usec = 1;
tim.it_value.tv_sec = 0;
tim.it_value.tv_usec = 1;
setitimer(ITIMER_PROF, &tim, 0);
}
Discussion of the implementation
What is missing? We are using the sigaction API... we should make use of the siginfo_t passed inside the signal handler.
What if we need a higher precision or need to handle overflows?
There is the POSIX.1b timer API which provides timers in the nanosec region and also providers information about overflows (e.g. when the signal could not be delivered in timer). More information can be found when looking at the timer_create functions.
When is the interval timer not useufl?
Imagine you want to measure time it takes to complete a download and someone wrote code like this:
QTimer::singleShot(this, SLOT(finishDownload())), 300000);
In this case to finish the download a lot of real time will pass and the app might be considered very slow, but it in terms of the itimer only little will be executed as the time we just sleep is not accounted on us. This means the itimer can be the wrong thing to use when you want to measure real time, e.g. latency or time to complete network operations.
Jee Labs: JeeNode enclosure
At last! – Here’s a fantastic enclosure for the JeeNode:
The plugs are just one possible orientation, they will also fit sideways, i.e. stacked on their side like the JeeNode in there. No screws, no glue – this just needs a PCB of the right size – or as in this case: perf-board with some male headers to connect to the JeeNode ports.
The whole box clicks together with the other side, which has exactly the same shape:
Available in light gray and in black from Dick Best in the Netherlands.
I’ll look into adding this enclosure option to the shop.
Liu Xiangfu, openmobilefree.net: 本 NanoNote 的第一个硬件衍生产品
CC 就是Creative Common 。本 NanoNote 的硬件原理图是以CC-BY-SA协议发布。这个SAKC就是一个最好 CC 应用的例子
先贴图片（我总是喜欢图片）
请大家注意看右下角：
QI-HARDWARE http://nandnote.cc SAKC_BOARD RC1 CC-BY-SA 3.0SAKC 是在Ben NanoNote电路图的基破上设计开发的。这样就省去了很大一部分的设计时间。很快的将产品设计出来。并且 Carlos 用了48 个小时就把所有的组件都焊接到PCB上。而且Ben NanoNote的软件也很容易的就运行在 SAKC 上。只是要对一些特殊功能写一些驱动。
可以想像如果有相当一部分硬件的电路图是以 CC 形式开发的。硬件设计开发成本将大大缩小。也会节省相当一部分硬件设计的投入。
很欺待更多的 NanoNote 的衍生品。别忘了在你的硬件设计图上加上 “ CC-BY-SA “
OpenPandora: A dream becomes reality!
Didn't we all dream about that the case mass production should become reality?
Well, it has. We got some brand new pictures for you.
The mould has been successfully calibrated and mounted on the machine.
The pieces you see are the first that has been spit out by the machine, so those are testing ones which are being checked.
Not all have the finishing applied - one nice picture that does show how it will look like with finishing applied is the one with the battery lids.
Those samples are being checked - and if they are okay (and they really do look fine), they will continue to spit out the cases and apply finishing.
Enjoy!
{phocagallery view=category|categoryid=21|limitstart=0|limitcount=0}
Liu Xiangfu, openmobilefree.net: 仙剑在 本 上运行的图片
一些图片已经传到了 qi-hardware.com 的WIKI上。今天又拍了两张
下载是屏幕截图
openmoko-fr: Solution Linux
Comme vous le savez sûrement déjà, le salon Solutions Linux se tiendra à Porte de Versailles à Paris, du 17 au 18 mars 2010.
En revanche ce que vous ignorez peut-être, c'est que Bearstech y sera présent avec un programme bien rempli :
- conférences
- formation / tutoriel
- ateliers
- tables rondes
Pour connaître le détail, consultez cette annonce.
Pour rencontrer d'autres mokos sur place, consultez également le forum et la page wiki dédiée.
Tuxbrain: Qi-Hardware weekly update 9 and 10/2010
Summary: 1)new Ben NanoNote software image delayed; 2)IDA Systems, Jaipur/India; 3) schedules for upcoming projects; 4) how to describe SAKC & Milkymist One
From the Qi Hardware Development List Wolfgang Spraul says:
Hi,
---1 new Ben NanoNote software image delayed
Liu Xiangfu, openmobilefree.net: 第一个开放版权的硬件的产品 Ben NanoNote上市
- CPU：336 MHz XBurst Jz4720 MIPS兼容 CPU
- 显示： 3.0” color TFT
- 分辨率： 320 x 240， 16.7M color
- 尺寸 (mm)： 99 x 75 x 17.5 (lid closed)
- 重量： 126 g (包括电池)
- 内存： 32MB DRAM
- 2GB NAND 闪存
- mini-USB: USB 2.0 High-Speed Device
- 外放，内置MIC
- 耳机接口 (3.5 mm)
- SDHC microSD
- 电池：850mAh Li-ion battery
- 系统：OPENWRT （GNU/LINUX）
NanoNote 是开放版权(简称开权)的硬件
一但购买了开权硬件的产品，其它关于硬件产品的资料你将一起获得如（原理图，源代码）。我们的使命是：为自由软件开发人员提供一个稳定 并达到量产质量的硬件平台，方便自由软件开发人员在上面开发有趣的程序。我们见证过一些硬件不稳 定，没有为消费者准备好的例子。那样的开放硬件无法克服不稳定的问题，软件开发总在不停地挣扎，受 到硬件不断改动的影响。我们在选择硬件设计时，一方面考虑硬件的稳定性和是否已大量生产，另一方面考 虑到它是否开放，是否为自由软件的开发提供保护措施和可能性。在某些情况下，硬件设计的确已经能运 行一些 Linux 内核版本，但内核却是过时的，很难去修改内核代码来达到其它的目的。我们让这一过程变 得容易。我们的主要承诺是给自由软件开发人员提供稳定，工作，高质量的硬件。有了这一坚实的基础， 软件开发人员能将精力放在为终端用户创造出绝优的应用软件上。
我们所有的步骤开始于寻找可以开放并且已经量产的硬件。我们与亚洲的制造商、硬件可以开放的或 是能够合作设计开权硬件的公司合作。我们的硬件设计工作的重点是记录这些设计，在开放版权下发布这 些设计，然后建立一个协作社区努力来改善设计。这些工作将利用自由软件工具如 KiCAD、 HeeksCAD，并且会以开放版权发布完整的硬件和机械设计。
开权硬件有着很好的前景。在专利系统下，终端用户受制于产品的生命周期。在专利的世界里有一个 预定的生命周表－EOL(End Of Life)。届时软件支持会停止，产品的计划会停止。而开权硬件是没有 EOL 的。设计始终为加强和扩展敞开大门;由于运行的是 GPL 的软件，终端用户总是可以自由地为自己 和其他人提供帮助支持。硬件的计划是开放 的。因为设计是基于开放版权，任何一个有新创意的工程师都 可以创建一个新的设计，当然只有那些愿意共享设计的才能享受到这种优势。我们的NanoNote发展计划很简单－ 循序渐进，不断提高。这确保了软件的开发工作。
NanoNote 应用：- 维基百科 离线版本，这样你就可以把世界上最大的知识共享库放到你的口袋里。
- 电子词典 NanoNote 可以运行 星际译王， 有了星际译王NanoNote 比任何一个电子词典产品的字典都要多。
- PDF 阅读器，虽然屏幕有点小。
- 嵌入式开发实验平台，NanoNote 的所有的文档都是可以自由免费的获得。另外NanoNote 有一个从USB启动的功能，如果你不小心把 NanoNote 刷坏了。你总是可以从USB 启动来修复你的 NanoNote。
- 自学平台，对于很多刚入门学习 GNU/Linux 的朋友来说不知道怎么下手。有了OPENWRT系统，你只需要输入两个命令等上～1个小时就可以完整的从0开始编译你的嵌入式开发环境。如果是最小化配置NanoNote 的文件系统只有 1.4M。
- 官方网址：http://www.sharism.cc
- 官方网上商店：http://www.nanonote.cc
- 文档相关：http://www.qi-hardware.com
- NanoNote 源代码：http://projects.qi-hardware.com/
- NanoNote 刷机文件：http://downloads.qi-hardware.com/software/images/Ben_NanoNote_2GB_NAND/
- 关于购买与使用问题可以发邮件到 ：discussion@lists.qi-hardware.com
- 到这里定阅：http://lists.qi-hardware.com/cgi-bin/mailman/listinfo
- NANONOTE的QQ群：90586412 欢迎加入。
- 中文BLOG：http://www.openmobilefree.net
维基百科 离线版本，这样你就可以把世界上最大的知识共享库放到你的口袋里。
