If you wish to deploy lm-sensors on multiple diferent linux machines issue is with sensors-detect what ask you quite a few questions.
 
I asked on IRC and got few suggestions. First one is if you wish to accept defaults which sensors-detect suggest you need just to press [ENTER] all the time. To automate this use this one liner:
 
(while :; do echo ""; done ) | sensors-detect
 
If you wish to override defaults and answer YES to all questions then use this oneliner:
 
yes "" | sensors-detect
 

 
Hi, we have been testing what is the absolute maximum speed over wifi when using openwrt, for out test we used this hardware:
 
- 2 x Ubiquity Router station
- 2 x Wistron CM9 802.11a/b/g mini pci cards
- 2 x 3dBi omni antennas
 
- openwrt version – backfire 10.03.1
- wifi driver – madwifi
- distance – 2 meters (same room)
- encryption – psk2
 
For benchmarking we installed iperf package and used default settings (tcp packets in one direction).
 
First we tested “plain” 802.11a mode (hwmode 11a) on channel 40 and we got 30-35Mbit speeds.
 
Then we switched to 801.11a turbo (hwmode 11ast) and got 55-60 Mbit speeds.
 
Is this the maximum speed possible? Are there any other tweaks we can do to get faster speeds?
 
Did you get faster speeds? How? Which gear did you use? We didn’t make results artificially better by using udp packags, my guess by using udp packages we could get near 100 Mbit speeds.
 
Are there any openwrt tutorials for tweaking and benchmarking maximum speed?
 

 
Google has disabled wireless ad-hoc networking in Android from day one. Underlying Android libraries and wifi stack support adhoc networking and so far Google has provided no explanation why it still, even after four years, leaves adhoc disabled.
 
There has been huge outcry from Android users over this issue, but there is still no answer from Google Android developers.
 
There are few suggestons on xda-developers forum, and also on Stackoverflow, but most solution so far consisted of using new rom that had ad-hoc support enabled or manually messing about system config files.
 
But wait, there is an app for that!
 
There is an app called WiFi Ad Hoc enabler that should work on most Android devices.
 
If this app works for you, please give it a good review or notify developer of any issues you encounter, but consider that not all Android devices are supported yet.
 
I would be very grateful if you would vote up my answer on Stackexchange.
 
[1] https://code.google.com/p/android/issues/detail?id=82
[2] http://forum.xda-developers.com/showthread.php?t=754961
[3] http://stackoverflow.com/questions/1932150/can-android-do-peer-to-peer-ad-hoc-networking
[4] https://play.google.com/store/apps/details?id=nl.arendmedia.wifiadhocenabler
[5] http://www.arenddeboer.com/wifi-ad-hoc-enabler-for-android/
[6] http://stackoverflow.com/a/10108812/1031514

 
Krenula je zanimljiva rasprava na CWN (Croatian Wireless Networks) google grupi o Meteo stanicama. Prenosim svoj dio rasprave i pošto vjerujem da će ova tema biti biti zanimljiva i široj geek publici ;)

Ako nekoga zanima i pristup CWN grupi samo se treba javiti i dobije pozivnicu.
 

>
> @Valent: što to točno radite? nisam upućen
 

Za prave profi i manje profi vremenske stanice je definitivno najupućenija Istramet ekipa [1] pošto su oni napravili po Istri čitavo čudo meteo stanica i bolje prognoze imaju od DHMZ-a ;) Bili su i na tv-u [2]. Vjerujem da oni najbojle znaju koje stanice valjaju i koje ne, ovisno o kvaliteti i uvjetima u kojima trebaju raditi.
 
Ono što se radi preko projekta sa ekipom iz Wlan-Slovenije je da se od malih tp-link routera naprave senzorske stanice za sve tipove podataka, pa tako i za meteo podatke [3] ali i za razne druge tipove podataka. Evo kako to može lijepo izgledati [4].
 
Bila je i super usporedba 5 meteo stanica u emisiji Gadget Show u rangu 1000-2000 kn [5] ali emisiju mozes pogledati online jedino ako imas vpn do engleske ;( ali našao sam i komentare na tu emisiju na nekom forumu [6]
 
Po meni najbolje uzeti tp-link wr741 i na njega staviti DS18B20+ senzore kao što to radi ekipa iz Wlan-Slovenije [7] i za par sto kuna imaš online meteo stanicu. Mi smo sada naručili 10 senzore i krećemo u
izradu pločice za 1-wire sabirnicu, tako da ćemo uskoro u Osijeku imati 10-ak meteo wifi mesh stanica.
 
Pozivam i sve ostale da se uključe i u svoja mjesta postave mesh meteo nodove… sada dok je snijeg vani je pravo vrijeme, kada se okopni sve treba biti spremno samo za nakačiti na zidove i krovove ;)
 

Ako vas zanima više projekt Otvorena mreža možete pročitati članak [8]. Svi novi sudionici na ovome međunarodnome projektu su dobrodošli, ako ste u Slavoniji i Baranji samo se meni javite ili pokrenite ogranak ovog projekta i u svome mjestu ili kvartu ako je veći grad u pitanju. Za sva dodatna pitanja stojim vam na raspolaganju.
 

[1] http://www.istramet.com/
[2] http://mojtv.hr/video/v/aTfOKdSGduE/istramet-u-dnevniku-nove-tv.aspx
[3] http://dev.wlan-si.net/wiki/Modifications/SimpleThermometer
[4] https://nodes.wlan-si.net/node/kozolectest/
[5] http://fwd.channel5.com/gadget-show/videos/jon-test/jon-test-weather-stations
[6] http://www.hardytropicals.co.uk/forum/viewtopic.php?f=1&t=8456
[7] http://dev.wlan-si.net/wiki/Modifications/SimpleThermometer
[8] http://kernelreloaded.blog385.com/index.php/archives/projekt-otvorena-mreza/

 
Projekt Otvorena mreža Osijeka podržava udruga Osijek Wireless, no projekt ne pripada isključivo udruzi niti ga udruga želi zadržati samo za sebe. Ovo je projekt svih građana i tko god želi može se uključiti u njega. Ishod i uspjeh ovog projekta ovisi o cijeloj zajednici.
 
Jedan je od najvažnijih ciljeva napraviti platformu koja će biti otvorena za razne druge aktivnosti – od pristupa internetu za turiste i građane i omogućavanja besplatnih telefonskih razgovora unutar mreže do postavljanja senzoričkih platformi za mjerenje bilo koje vrste podataka (temperatura, buka, padaline, i dr.), postavljanje web kamera i sl.
 
Jednako važan cilj ovog projekta jest i edukacija mladih kroz besplatne radionice, a u području novih tehnologija poput rada računalnih žičanih i bežičnih mreža, Linux operativnog sustava, mikroelektronike, programiranja i dr. kroz besplatne edukacije, koje će započeti u rujnu ove godine. Svi koji žele moći će se upoznati s osnovama rada bežičnih mreža i Linux OS-a te kako projekt Otvorena mreža Osijeka radi s tehničke strane.
 
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I have an older Linksys WRT54GL v1.1 with Tomato firmware. Although I’m a hardcore Linux geek I never used OpenWRT, yeah, I know – shame on me ;)
 
OpenWRT wiki has installation instructions that explain how users should first install 2.4 linux kernel based image, set some nvram options, and then install or update to latest 2.6 based firmware image, but WIKI has no links how to do an update.
 
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Our local Linux Users Group in my home town of Osijek has started workshops called knowledge exchange in partnership with our public library. So first step was to install Fusion Linux Fedora Remix on their PCs.
 
Are there other examples with Fedora being rolled out in public libraries or in some other public institutions? I would be really interested with their experiences.
 
In my example there are 6 PCs that are used by any member of library, usually those are primary and high school kids. They come here and most of their activities are watching youtube, logging onto facebook and playing flash games.
 
Their primary OS is Windows XP with Windows SteadyState enabled. I found out that they decided to use Windows SteadyState because they had problem monitoring kids and they would leave p2p apps running and downloading music and video files and come back a day later with hard drives to save them onto. Obviously that is not what they want kids to do so by enabling Windows SteadyState any files downloaded are erased by reboot. This policy probably also removes most virus issues, both because kids don’t plug any usb devices and because any changes are erased.
 
First issue I came across was that Anaconda installed and GParted wouldn’t resize single windows ntfs partition because there were some errors on hard drive. I tried logging into Administrator account and running chkdsk /f but that didn’t help, even with option that Windows SteadyState merges changes. I didn’t want to disable Windows SteadyState so I reverted to boooting of Windows live CD and running chkdsk /f from repair console. That fixed the issues on all machines.
 
I didn’t have good experience with Anaconda ntfs resize so I used GParted to resize ntfs partitions. GParted worked perfectly on all machines without issues.
 
After installing Fusion Linux I did these post install tweaks:
* Change grub entry “Windows XP” from “other”
* Change grub entry to Fusion Linux 14 from Fusion Linux 14.1 (2.6.35.13-92.fc14.i686)
* Put 10 seconds wait in grub menu
* Enable automatic login
* Disble screensave password lock
* Enable automatic updates
* Put Firefox, Chromium and Teeworlds icons on desktop
 
What would be best way to enable “Windows SteadyState” equivalent in Fedora? Brute force way would be a simple script that deletes all files in user home folder. Are there some more subtle ways? And how to make some changes permanent while making all other changes transient? Using unionfs seams like a bit of a overkill… Any suggestions are welcome.
 

 
i-gotU GT200 GPS is the greatest pocket GPS gadget you can find, if you are a geek then this is one gadget you have to get.
 
Why is it so great? It is a really cheap GPS device (around 55$ or 45€), it has a great SiRF III chipset and it works as a standalone GPS logging device because it has on-board memory! Did I mention it is really cheap? ;)
 
i-gotU GT200 software that comes with doesn’t have support for Linux or Mac.
 
The good news is that there is a project called igotu2gpx that adds Linux and Mac support for this great device!
 
To get this utility running on Fedora here are step by step instructions on how to do it:
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When you try to copy one file over existing one as root user in Fedora you will be asked to confirm that action, but as regular user you can overwrite existing files without any question. So you can easily overwrite your own personal files, GNOME settings, documents, images, etc.
 
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To have Blender 2.56 successfully running on Fedora 13 and Fedora 14 you need to compile it from source.
 
This is not as hard as most people would think if you follow these simple instructions.
 
1. Install needed package dependencies
2. Download Blender source
3. Edit scons config file (WITH_BF_FFMPEG = False)
4. Compile Blender
5. Run Blender
 
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