#qi-hardware IRC log for Sunday, 2012-02-12

wpwrakphew. procmailrc updated. it cleverly files DocScrutinizer's mails to the milkymist list under "moko", since they were copied to me and thus the direct mail arrived first and didn't match any of the qihw patterns i had.12:17
wpwrak(/dev/mem) if it's just a question of hiding it from "bad old programe", how about: rm -rf /dev/mem; mkdir /dev/mem; chattr +i /dev/mem; mknod /dev/goodmem c 1 112:25
wpwrakor, even cleaner. make a libc wrapper for those known to be bad programs that simply catches and denies open. there's probably code around that does just that that one could simply reuse.12:27
kristianpaul* ^From.*@lists.en.qi-hardware.com13:14
kristianpauli'm trying to avoid regexp for subject since procmail may get confuse somethimes and drop mail where it dint belong..13:14
kristianpaulergh, was * ^(From|Cc|To).*@lists.en.qi-hardware.com13:15
viricdo you wear... hmmm those cords at feet to avoid static electricity?13:55
virichere we have had many days without water... and we have sparks all around13:56
viricI wonder if electronics shops sell them13:56
viricor they can be easy made at home13:56
whitequark(static electricity) I have this as somewhat of a problem14:09
whitequarkbut I wonder about other thing14:09
whitequarkI have a floor made of wood here, or, alternatively, linoleum14:09
whitequarkand on this floor stands a chair made of metal14:10
whitequarkif I'd touch it, there would be a giant, loud, bright spark14:10
whitequarkwhy would this happen? wood/linoleum are insulators afaik14:10
whitequarkand the chair itself should not have such a big capacity, should it?14:10
whitequarkwhy my finger and the chair itself would ever have such a different potential so the voltage across the gap would be enough to break through air?14:12
viricI think a chair can have enough capacity14:25
viricstatic electricty gets created specially between insulators14:26
whitequarkviric: ofcourse it gets created between insulators14:27
whitequarkI know that14:27
whitequarkprobably the floor and my socks14:27
whitequarkbut why does it want to flow to the chair? that was my question14:27
viricwhile you have some potential vs the floor...14:31
viriconce approximating the chair, you are going to make all the negative charge of the floor towards the chair point you may touch14:32
viric'opposite charge'14:32
whitequarkI'm also thinking of this14:33
whitequarkfor example, suppose there is a big negative charge on me; that is, on the tip of my finger too14:34
whitequarkchair cannot have any potential inside it, as it's metal14:34
whitequarkso its electrons would reposition themselves as to compensate the field of myself14:34
whitequarkand near the tip of my finger a huge positive charge will accumulate14:35
viricit's not only metal - it can also accumulate a lot of opposite charge at any point14:35
whitequarkoh, that too14:36
viricmuch more than an insulator14:36
Action: viric recommends a watch of BBC - Shock and awe - the story of electricity14:37
viricthat's for broad tv audience...14:38
viricbut I found it nice to watch14:38
virichm I have two projects where I need a tokenizer of html printable text (thus, ignoring tags, scripts, css, ...)14:39
viricprojects in C.14:39
viricif anyone knows what can I pick...14:39
viricI'd not start writing one.14:39
whitequarkviric: nokogiri?14:46
whitequarkI mean libxml14:46
whitequarkuse SAX parser and write five lines to ignore all lines you don't want14:46
viricwouldn't that require a well formed html?14:47
viricthe html comes from the wild14:47
whitequarklibxml has a very good HTML parser14:47
whitequarkit's really awesome at parsing crappy html14:47
viricgood to know! :)14:47
whitequarkI use it at all times (albeit from Ruby. that's why I said "nokogiri"; that's the name of a Ruby binding)14:48
viriclibxml2, rigth?14:48
viricwill it require anything extra at runtime? dtds, etc.14:49
whitequarkdtd is for verifier14:50
whitequarknot the parser14:50
viricI'll check it then14:51
abushcrafterforgWhat advantages does the milky mist have over an arduino + laptop17:59
whitequarkarduino can't process video at all18:00
abushcrafterforgthats what the laptop is for18:00
whitequarkyou may need a very powerful laptop for some effects afaik18:00
abushcrafterforgsorry for DMX this is18:00
whitequarkand that will introduce considerable latency18:01
abushcrafterforgso latency wtih the arduino + laptop setup18:01
whitequarkafaik yes. but you'd better ask wpwrak or wolfsparul18:02
abushcrafterforgits only for a few DMX lights. currently just 1 may be more in the long long run. I also have some other lights that only have a rubbish sound to light which with time it would be nice to bypass/replace with something decent.18:08
abushcrafterforgwpwrak: see above18:08
abushcrafterforgwolfsparul: see above18:09
abushcrafterforgoh and I decided its not worth getting a £50 Serial Camera Module to connect to the nano note when I can get for £60 2rd hand canon running the open source CHDK firmware.18:13
abushcrafterforgWhich means higher res pics!18:13
abushcrafterforgand optical zoom.18:13
wpwrakabushcrafterforg: well, it all depends on your objectives ...  comparing milkymist with an arduino is a bit like comparing starship enterprise with a tricycle ...18:15
abushcrafterforg+ laptop18:15
wpwrakokay, starship enterprise vs. battlestar galactica. still rather different beasts :)18:16
whitequarkwpwrak: I only seen BSG... :)18:17
abushcrafterforgwhat about lag18:17
wpwrakif you need fast and complex peripherals, m1 runs circles around arduino+whatever18:17
wpwrakyou mean audio-to-video-change delay ?18:18
wpwrakthere, m1 should be hard to beat18:18
wpwrakMilkymist One18:18
abushcrafterforg"(18:01:03) whitequark: and that will introduce considerable latency" I don't have a clue. Great big newbie here18:19
wpwrakit's hard to estimate lag. most effects are iterative, so they take some time to develop anyway18:20
wpwrakso lag is but one parameter in obtaining a good audio-visual experience18:21
abushcrafterforgany recommenced reading?18:21
abushcrafterforgor keywords for searching18:22
wpwrakon what exactly ?18:22
abushcrafterforgon dmx,sound to light, other parameters in obtaining a good audio-visual experience, etc18:23
wpwraki don't know. you probably want to look for some introductory texts for general visual and audiovisual design. that would be in the arts section of your bookstore.18:25
wpwrakthen you could translate some of the concepts into the world of milkymist18:25
wpwraka fairly specific keyword would be "milkdrop"18:27
wpwrakon amazon, i find just one book on that: http://www.amazon.com/Dance-Animation-including-Fischinger-Hallock-greenewalt/dp/1244414867/ref=sr_1_2?s=books&ie=UTF8&qid=1329071201&sr=1-218:28
wpwrakand the description sounds a little suspicious. "To date, this content has been curated from Wikipedia articles [...]"18:28
wpwrakanyway, that's the direction in which you want to explore18:29
abushcrafterforgok thanks18:29
abushcrafterforgAny opinions on the state of gnu/linux sound to light dmx control software?18:30
wpwrakin general, most material will probably of the "how to" type, explaining explicitly which buttons to press and there to click with this and that program. that won't help much.18:30
wpwrakdon't know. you'd have to ask the VJs that occasionally hang out on #milkymist18:30
rohabushcrafterforg: dunno if there is a free one18:34
abushcrafterforgI will do some more reading before I bother VJs18:35
rohwell.. there is qlc, but it wasnt fit for what friends of mine wanted18:35
abushcrafterforgI am currently reading about that one18:36
rohi think they ended up using a commerical solution magicQ from chamsys.. it also runs on linux, but isnt free18:36
abushcrafterforgno thanks then18:36
abushcrafterforggot to have me freedoms18:37
krispaulArtyom: hi18:38
rohabushcrafterforg: they needed multiple universes and proper support for devices which use multiple channelids etc. so i can understand their choice. if you got simpler requirements it may be you find qlc enough18:42
abushcrafterforgoh and by the way I think I will have the Nano Note as my every day pocket computer and a canon camera running CHDK and for my gov tracking device also know as a mobile phone I will use my old black and white screen one with the battery removed :-D18:42
abushcrafterforgI don't need that level. thanks for the info18:43
rohqlc seems nice  from the docs18:47
Artyomkrispaul: hello18:51
kristianpaulphew it took longer i tought..21:05
whitequarkI'm curious about the real meaning of word "hacker" in your countries/languages21:46
whitequarkbecause in Russian, "hacker" (E0:5@) has exactly one meaning, which is "cracker"21:47
whitequarkthrough while the real hackers are often called so, that isn't done consciously21:47
whitequarkwolfspraul: I'm curious of your opinion, too: http://irclog.whitequark.org/qi-hardware/2012-02-12#1329083192-1329083248;21:48
wolfspraulwhitequark: will look at but a little later...21:49
wolfsprauldid you receive the m1 yet?21:50
whitequarknope, fedex does not deliver at weekends21:50
whitequarkI just noticed21:50
whitequarkI don't have a VGA monitor21:50
whitequark... actually, I don't have any non-embedded display devices at all.21:51
whitequarkis it a 'hard' requirement for working at m1?21:52
wolfsprauldepends on what you want to do, but without visuals it's kinda dry21:54
whitequarkwolfspraul: I heard there were some problems with USB21:57
whitequarkcan you elaborate&21:57
whitequarkdarn. *?21:57
whitequarkinterfacing an USB mouse shouldn't be a big pain21:57
wolfspraulsorry as I said I need to run but back in a few hours21:58
whitequarkok. I will still probably be here21:58
wolfspraulthere are no unsolvable problems with USB :-)21:58
whitequarksounds good22:00
abushcrafterforgThis is in my email sig: The word hack, hacker, hacking, hacked, etc is often misused. It does not mean nasty, evil stuff. Cracker is the word you want. See:22:23
abushcrafterforg(Great documentary to watch!) http://thepiratebay.org/torrent/5621742/Hackers_Wanted%5BUnreleased_Director__s_Cut%5DDVDRip_H264-BeLLBoYhttp://torrentfreak.com/unreleased-hackers-wanted-movie-leaks-to-bittorrent-100520/22:23
whitequarkabushcrafterforg: _I_ know22:29
whitequarkbut in Russian, it never had its original value22:29
whitequarkbecause it originated from media22:29
whitequarkit just kinda happened this way22:40
whitequarktake even me: when I pronounce "hacker" in Russian, I think of a criminal. when in English, I think of a computer specialist.22:42
whitequarkthe meaning embeds itself way down into unconsciousness22:42
whitequarkthese are different words for me22:43
whitequarkeven through they sound exactly the same22:43
abushcrafterforghave you see the hackers wanted documentary?22:49
whitequarkdidn't even knew of it22:49
whitequarkbut I know how the word "hacker" originated, its meaning and implications22:50
abushcrafterforgit was leaked due to a argument with the producers. Its about: "Adrian Lamo, who pleaded guilty in 2004 to cracking the internal network of The New York Times."22:55
whitequarkyes, I read the article22:57
abushcrafterforgI also has a fantastic peace of music23:00
abushcrafterforgbut I can't get a flac copy of it :)23:00
abushcrafterforgthe "t" is a typo habit from playing Urban terror23:01
abushcrafterforgAnd the directors website is flash so I can't get his email.23:02
abushcrafterforgI believe the artist was a friend of his.23:04
abushcrafterforgsorry off topic23:05
kristianpaulwhitequark: i had met people trying to avoid hacker by the word aficionated23:47
kristianpauland yes in my country as well the words meas that crack* thing, as usual :)23:47
whitequarkkristianpaul: what's your country?23:48
kristianpaulwhitequark: i'm from colombia23:52
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