#qi-hardware IRC log for Saturday, 2014-03-08

eintopfwhere is werner :(01:42
eintopfno thetz01:48
eintopfcaaaaant liiiiiive cant live without wpwrak .... *sing* 01:52
nicksydneyeintopf: you need to sing louder as it's very noisy down in Argentina ... most probably wpwrak is doing his weekend rounds :)04:05
wpwrakoh dear, has he been at the catnip again ? http://www.youtube.com/watch?v=J5Xrcp6k8VE05:02
DocScrutinizer05seems my cat been one of the 25% that are immune against catnip. It also wasn't useable as tobacco, so eventually I stopped watering it11:53
DocScrutinizer05(the catnip, not the cat)11:54
DocScrutinizer05then OTOH my cat been crazy without catnip, every now and then11:55
DocScrutinizer05she loved potato peel for example11:56
whitequarkyou tried to smoke catnip?11:56
DocScrutinizer05really went crazy for it, digging it out from bottom of filled kitchen wastebin11:57
DocScrutinizer05tastes not really delicious and has no psychoactive properties whatsoever11:58
whitequarkthat explains11:58
whitequarkeverything, I guess11:58
DocScrutinizer05I heard in WW-II they smoked seagrass form mattresses12:00
DocScrutinizer05can't figure it tastes better or works better than catnip12:00
whitequarkI humbly suggest you have a vacation in Colorado12:01
DocScrutinizer05tumble weed?12:02
DocScrutinizer05nah, I'll stay with tobacco for rest of my life12:02
whitequark(... which if you do, won't be that long)12:03
DocScrutinizer05sometimes I think it's been long enough12:03
DocScrutinizer05anyway I'm not one of those longevity fanatics12:05
DocScrutinizer05"live fast, die young" been the motto of our generation12:06
DocScrutinizer05I'm allready much older than I planned to get12:06
whitequarkI don't know, I'd surely rather die than spend last 20 years of my life in some nursery being demented12:07
whitequarkbut for all I know, modern medicine makes it possible to be of sound mind in 70s12:07
whitequarklook at Vint Cerf12:07
whitequarkthe guy's still very much kicking it12:07
whitequarkand probably will for at least a decade, maybe more12:08
DocScrutinizer05look at Mick Jagger ;-P12:08
whitequarkor Knuth. I wonder if he ever finishes his massive manuscript12:08
whitequarkwell, that's not too bad either!12:09
whitequarkdamn, now I wonder how exactly catnip would taste if smoked12:17
DocScrutinizer05anyway, when I send s mail to some folks saying "you wanna administrate your infra yourself? Good luck! prepare for that infra to go down!" and then one idiot comes and accuses me I had threatened them with me "formatting the servers", then I really wonder if life isn't too long maybe12:18
DocScrutinizer05whitequark: smoke peppermint tea and you know it12:19
DocScrutinizer05(too long) generally or either for me or those guys12:20
DocScrutinizer05generally, since it obviously leaves time for dealing with such BS, or for either them or me since otheriwse we hadn't run into this situation12:21
whitequarkyeah, figured it'd do something with maemo12:25
whitequarkI certainly hope you have backups and a proven method for restoring them12:26
whitequarkdunno how it was done, but we youngsters have a newfangled method for managing infra, called "chef". basically you describe your infra in a domain-specific language, then you give it a blank server and within 10min you have exactly what you described12:28
whitequarkor you modify your chef config and rerun it, and get your actual config updated12:28
whitequarkespecially useful if you have 1000s of servers12:28
wpwrakDocScrutinizer05: well, your statement could be interpreted as vote of extreme lack of confidence or as a threat. since they seem to be quite confident of themselves, they jumped to the latter ...12:57
wpwrakDocScrutinizer05: but it seems to be a task you want to get out of. let them fight. you have much more important things to do.12:58
wpwrakwhitequark: now i'm wondering if "chef" is a tool, a person, or some metaphysical form of existence :)12:59
whitequarkchef is a program12:59
wpwrakthere go my dreams of jeannie ...13:00
whitequarkit's written in ruby, and there's a penchant for certain kind of naming in the ruby community13:00
whitequarke.g. chef operates on recipes, and the command-line tool for creating recipes is called knife13:00
wpwrakof course, she wouldn't need 10 minutes. it would fail spectacularly, but at least it would be done in the blink of an eye13:01
whitequarka collection of recipes is a cookbook, which is stored in a bookshelf... and so on13:01
wpwrakah, speaking of failure. here's a picture of a launch the argentina space program calls "successful": http://www.lanacion.com.ar/1669921-un-despegue-fallido13:01
whitequarkit's a very liberal definition of "successful"13:03
wpwrakat least it didn't explode, which is something13:06
wpwrakbut the "snout in the dirt" posture gives it a rather comical appearance13:13
wpwrakDocScrutinizer05, larsc: i can say it better in german "die Rakete fiel auf die Fresse" ;-)13:15
DocScrutinizer05The requested operation could not be completed13:19
DocScrutinizer05Cyclic Link Detected13:19
DocScrutinizer05URL: http://www.lanacion.com.ar/1669921-un-despegue-fallido13:19
wpwrakworks here. maybe try again ?13:21
DocScrutinizer05I however have a pretty clear idea how it looked like, seen same pictures from V2 development and I think also from early USA space program13:21
DocScrutinizer05wpwrak: you're using FF I guess. It's more forgiving for such BS13:22
wpwrak(works here) even with konqueror :)13:22
whitequarkDocScrutinizer05: http://bucket1.clanacion.com.ar/anexos/fotos/59/1850159w645.jpg13:22
wpwraknaw, i use chromium13:22
whitequarkwpwrak: did it even ignite?13:22
DocScrutinizer05prolly you got cookies enabled then13:22
wpwrakwhitequark: i thing there is something that looks like minor scorch marks. but yes, i asked myself that question, too. it may well have just fallen off the ramp ;-)13:23
wpwrakah yes, cookies i have13:23
DocScrutinizer05whitequark: yeah that happens when it ignites but stops or significantly reduces thrust after a very short time13:24
DocScrutinizer05or even just one of several engines lifts the whole rocket on one side13:25
DocScrutinizer05while other ones don't work13:25
DocScrutinizer05there are several funny movies of V2 and other rockets lifting from start table ~50cm, then sinking down again, falling to the side and exploding in a giant fireball13:27
whitequarkyeah, giant fireballs are invariably a side effect of immature rocketry13:28
whitequarkno wonder you're so attracted to it :p13:28
wpwrakDocScrutinizer05: you want to watch this: http://www.youtube.com/watch?v=McbCwSW2moo13:29
wpwraki especially likes the one towards the end that lifted off just enough to smash down with good enough force to blow of massively13:29
DocScrutinizer05yeah the first one already of your link, typical13:30
wpwrakit gets better :)13:30
larscIt is amazing that they managed to get rockets of the ground at all without modern computing power13:32
DocScrutinizer052:50 - rocket folds itself 13:32
DocScrutinizer05there's a reason you call it "rocket science"13:33
wpwraklarsc: but then, some of the finest disasters were actually possible only thanks to computers :)13:33
wpwraklooks more like "rocket empiricism", though :)13:34
nicksydneywpwrak: STM32 Cortex-M0 now selling for 32cents https://www.youtube.com/watch?v=FQMPa0kr-RA :)13:38
larscthis is so much better than the exploding rockets http://www.youtube.com/watch?v=HXdjxPY2j_013:38
DocScrutinizer0511:50 classical13:42
DocScrutinizer0511:58 rather13:42
DocScrutinizer0550cm jump and BOOOM13:43
wpwraklarsc: yeah, that one was impressive13:45
DocScrutinizer05real video art13:53
DocScrutinizer05only thing missing: a real grasshopper crwling across the camera lens, sometime after the cows moved by13:54
DocScrutinizer05anyway the test itself is based on utterly useless a concept13:55
DocScrutinizer05you can't use this concept for anything meaningful13:56
DocScrutinizer05http://www.youtube.com/watch?v=McbCwSW2moo 13:37 is extremely funny13:57
DocScrutinizer05dang, 13:5713:58
DocScrutinizer0513:30 it starts13:59
wpwrakyeah, looks for a moment as if it would go after the sub ;-)14:02
wpwrakand 27:40 illustrates what a darwin award candidate would do :)14:06
wpwrakme, i'd rather politely excuse myself at the first sign of trouble and cowardly retire behind the next blast wall14:07
DocScrutinizer05yeah, darwin award warranted14:11
wpwrakeven the last one is kind dramatic, even though they seem to have maintained a much safer distance14:12
DocScrutinizer05well, safe distance is always relative, see castle bravo14:12
DocScrutinizer05"duh, those are 30% Li6 and 70% supposedly inactive Li7 in there, a 40km distance should suffice by far"14:13
whitequarkwell, one can also overdo safety14:14
DocScrutinizer05then find yourself confronted with the largest explosion (western) humans ever managed to set off14:14
whitequarkand get todays nuclear industry, stuck with 60-year-old designs where new could be more efficient, less wasteful *and* eventually safer14:15
whitequarkDocScrutinizer05: eh? no, largest would be Tsar Bomba, 100Mt reduced to 50Mt14:15
whitequarkCastle Bravo is mere 15Mt14:15
DocScrutinizer05"we could see the bones through our hands' flesh"14:15
whitequarkoh, western. yes14:15
wpwrakwestern like in wimps :)14:16
Action: whitequark thinks "western" as in "not china or japan"14:16
DocScrutinizer05wpwrak: well, anything significantly larger than the castle bravo or Tsar is simply useles, it just blasts away the vacuum in empty space14:18
DocScrutinizer05though I admit the term "useful" is strangely odd for such experiments14:18
larscif you don't succeed at making a dent in the universe you can still try to make a dent in the planet14:33
wpwrakbtw, the best "short liftoff" is at 11:13. just the right height :)14:42
DocScrutinizer05I guess 11:30 is the panorama view of [2014-03-08 14:42:52] <DocScrutinizer05> 11:58 rather14:45
DocScrutinizer05roh: thanks a lot for pointer to ina219, we decided for ina231 now14:50
wpwrakyeah, they have three different views14:51
DocScrutinizer05roh: high-end shunt, nice small package, 0.3mA supply current when active, and hooray, even a ALARM IRQ line with programmable trigger. Range 0.15mA .. 4000mA with a pretty low shunt of 20mR14:53
rohDocScrutinizer05: nice17:58
DocScrutinizer05yeah, indeed. Thanks! :-)17:59
Action: FrankBlues waves19:23
sb0roh, where would you go shopping for buttons?20:32
sb0and knobs/faders20:32
rohdepends on whatfor21:00
DocScrutinizer05and how urgent21:03
DocScrutinizer05Conrad and some music (instrument repair) shops come to mind21:03
DocScrutinizer05when "go shopping" been meant literally21:04
eintopfmhhh, catnip21:14
sb0roh, I'm looking for a rectangular, roughly 20x10mm, preferably metal, pushbutton key22:38
sb0if possible with rounded edges22:39
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