Tuesday, July 30, 2013

Leap Motion Unboxing

My first off topic post: Leap Motion.

For those who never have heard about, it is a revolutionary human-machine interface supposed to allow controls like in "Minority Report" (the movie, not the K. Dick novel).

I pre-ordered some time ago and got it today. I just tested again, and the usage is not obvious. While waiting for a more complete review of the product, I share here's my unbowing session.

Coming from a Fedex envelope Fedex from Czech Republic (shipped 07-24, received 07-29)

Protected by a thin layer of foam.

Here is the Leap boxe:

A word just pretentious "Welcome to a whole new world". It specifies the URL where to download the software and drivers (no CD in the box).

The Leap Motion itself, with a sticker to remind the URL.

Two USB cables below (one 50cm and 150cm)

Leap Motion connected (does not work if the sticker is left)

No time to say more tonight. I'll test, and I post again.

Sunday, July 28, 2013

Fun with logs: crawling robots

After studying the "human" visits logs of my log, I have checked the visits done by bots identifiable by their userAgent ... And we can say they are legion.

The major search engines are of course present.

Description de cette image, également commentée ci-après
"Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)"

Bing (Microsoft)
Logo de Bing
"Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)"

and another Microsoft bot for Msn
"msnbot-media/1.1 (+http://search.msn.com/msnbot.htm)"

Yahoo! (I thought they used the Bing search engine ?)
Description de cette image, également commentée ci-après
"Mozilla/5.0 (compatible; Yahoo! Slurp; http://help.yahoo.com/help/us/ysearch/slurp)"
"Yahoo! Slurp China"

But also some lesser known engines:

Exalead (French)
Description de l'image  Exalead.png.
"Mozilla/5.0 (compatible; Exabot/3.0; +http://www.exabot.com/go/robot)"

Voilà (French)
"Mozilla/5.0 (Windows; U; Windows NT 5.1; fr; rv:1.8.1) VoilaBot BETA 1.2 (support.voilabot@orange-ftgroup.com)"

Yacy (a free and decentralized search engine I discovered thanks to my logs)
Image illustrative de l'article YaCy
"yacybot (webportal-global; amd64 Linux 3.6.10-nrj-desktop-1rosa; java 1.7.0_b147-icedtea; Europe/fr) http://yacy.net/bot.html"

Baidu (Chinese)
Description de l'image  Baidu logo.svg.
"Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)"

Jike (Chinese)

"Mozilla/5.0 (compatible; JikeSpider; +http://shoulu.jike.com/spider.html)"

Yandex (Russian)
"Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)"
"Mozilla/5.0 (compatible; YandexImages/3.0; +http://yandex.com/bots)"


"Mozilla/5.0 (compatible; Blekkobot; ScoutJet; +http://blekko.com/about/blekkobot)"


"gimme60 (Gimme60 Store ID Bot; gimme60.com)"

In addition to these search engines, there are also extractors bots data whose activities are less visible on the Internet.

alexa.com (Ranking site)
Alexa Internet
"ia_archiver (+http://www.alexa.com/site/help/webmasters; crawler@alexa.com)"

Twitter bot
Description de l'image  Twitter Bird.svg.

A site using Twitter

"Twitmunin Crawler http://www.twitmunin.com"

And many societies which collect and cross data to sale them to their customers
80legs web crawling
http://www.80legs.com/webcrawler.html;) Gecko/2008032620"


"Mozilla/5.0 (compatible; NetcraftSurveyAgent/1.0; +info@netcraft.com)"

"Mozilla/5.0 (compatible; AhrefsBot/4.0; +http://ahrefs.com/robot/)"


"UnwindFetchor/1.0 (+http://www.gnip.com/)"


"Mozilla/5.0 (compatible; Butterfly/1.0; +http://labs.topsy.com/butterfly/) Gecko/2009032608 Firefox/3.0.8"

And a few small bots that I was not able to know the role
"Mozilla/5.0 (compatible; Ezooms/1.0; ezooms.bot@gmail.com)"
"Web front page analyser. robots.txt complaint (norw.acd.inst@gmail.com)"

Next time I'll talk about traces left by geeks on the teapot log!

Sunday, July 14, 2013

Raspberry Pi power consumption - Half year

Here, finally, the power consumption after 6 months. I delayed my message to compensate the interruption caused to bug the last month.

The total consumption for an half year was year 10,7 kWh.

The total power consumption for June was 1,6 kWh. It's 0,2 kWh less than my usual per month consumption  Maybe the reboot and reinstallation of the system was beneficial.

Uptime of the Teapot is 99,82%. The service interruption had no impact, because I was able to plug my spare system very quickly.

1376 unique visitors were on the teapot in June.

crédit photo: Benjamin Stäudinger (Lightning #3) [CC-BY-2.0], via Wikimedia Commons