#qi-hardware IRC log for Saturday, 2012-12-15

DocScrutinizer06dang, the first half of that square blog I could've done ~2 years ago as well06:18
DocScrutinizer06didn't think it was worth even mentioning such simple stuff06:18
DocScrutinizer06I also tried to read the other 2 tracks by placing small distance blocks into the slot06:19
DocScrutinizer05I have to say I'm not really happy with the ID and how that design puts mechanic stress on the AV receptacle06:23
DocScrutinizer05lekernel: in your blog you say "position of head is important", you better should use (and explain) correct term 'azimut'06:28
DocScrutinizer05you made me run into reports about my best phillips cassette deck I ever had: http://www.pipetrap.de/eumig/06:45
DocScrutinizer05thanks :-D06:45
DocScrutinizer05http://www.zwettler.net/tech/img/fl1000.jpg  <306:48
DocScrutinizer05of course I had the schematics and I improved the circuit ;-)06:48
DocScrutinizer05e.g. I added a 2N1613 and a resistor and Zener and so turned the "dimmer" that originally only worked for flourescent display into a dimmer for whole device (flour., LEDs, 7-segment)06:50
DocScrutinizer05that FL-1000 came handy as storage device for my fist computer, the Nascom-II06:51
DocScrutinizer05however THAT: http://www.pipetrap.de/eumig/pix/eumig_mechanik.jpg been a nightmare with this deck06:56
DocScrutinizer05manual: http://elektrotanya.com/eumig_fl1000_qp.pdf/download.html  --  quite interesting schematics07:01
DocScrutinizer05those where the times when top notch devices came with *excellent* service manual by default07:03
DocScrutinizer05intriguing circuit detail around PSU, p.50  31T1607:23
DocScrutinizer05on "NetzAusfall" (brownout) the 8V rail gets powered from the much more energy of the 30V rail07:24
DocScrutinizer05while same time the 30V output gets blocked07:25
wpwrakwas that a feature they designed or discovered? :)07:35
DocScrutinizer05err, it been designed to allow moving heads and mechanics into neutral position on mains loss07:43
DocScrutinizer05the buffer capacitor of the 30V rail has less uF than the 8V buffer, but due to As/V * V it still held way more usable energy until it dropped below the 8V regulator's minimum input voltage07:45
DocScrutinizer05the increased voltage drop across the linear regulator is tolerable for that 0.5s duration07:47
wpwrak(move to neutral) ah, that's nice. not just "drop everything wherever you are"07:50
DocScrutinizer05it's still one of the smartest devices I ever seen07:53
DocScrutinizer05alas one of the clutches always tended to break08:03
wpwrakof course, few things have been obsoleted by technological progress quite as much as analog tape drives ...08:03
DocScrutinizer05yep, a pity08:03
DocScrutinizer05http://www.pipetrap.de/eumig/pix/cover_s.jpg  :-D08:03
wpwraki'd call it a victory :)08:03
DocScrutinizer05well, MP3 been an epic fail for every HiFi enthusiast08:04
wpwrakuse wav :)08:04
DocScrutinizer05what was it i heard? a professor did a test with his students - almost all of them thought flac doesn't sound right compared to mp3 X-P08:07
DocScrutinizer05yesterday in a cafe the guy didn't even notice his CD hung08:07
wpwrakmakes sense. the human brain adapts. i'm sure the first color movies looked all wrong, no matter how technically perfect the colors were.08:08
wpwraki still love it when they have those 16:9 tvs with an asymmetrically scaled 4:3 image. nothing says "progress" quite that much ;-)08:09
Action: DocScrutinizer05 idly wonders whether to try aspirin or coffee for the headache08:10
wpwrakhard evening at the pub ?08:10
DocScrutinizer05not at all08:11
wpwrakah, withdrawal08:11
DocScrutinizer05at the pub yeah, but only two tea with rum08:11
wpwrakah yes, it's winter over there :)08:11
DocScrutinizer05my flu started in summer08:12
DocScrutinizer05and never really vanished since08:12
wpwrakyou may want to check with a specialist. maybe your immune defenses need a little boost. they have pills for that nowadays.08:13
DocScrutinizer05they do?08:15
DocScrutinizer05had amoxicilin two weeks ago, effect zarro08:15
wpwrakit's some mix of things that trigger an immune response. kinda wakes up a system that has gotten lazy. then it's watchful again. i also had endless flus a few years ago. that pretty much got rid of them.08:16
DocScrutinizer05I heard living parasite worm eggs can do that when swallowing them08:18
wpwrakmaybe a virus then. an i'd avoid taking antibiotics unless i'm about to die. each time you take one, there's a good chance it won't work again in the future, reducing the chances of anything to help if you catch something serious some day08:20
DocScrutinizer05thermostat broken, friggin fridge froze the milk08:20
wpwrak(worm eggs) naw, nothing so weird. i think it's some surface proteins08:21
DocScrutinizer05(on avoiding antibiotica) was my first answer to my doc. A week later I came back asked for them, since I been so fed up with all that sneezing and coughing and muskle ache08:21
DocScrutinizer05pineapple enzyms?08:22
DocScrutinizer05saturday morning and I'm awake since 5 o' - go figure and you might know how I feel ;-)08:24
wpwrakwhat can i say ? i got up at 3 :)08:24
wpwrak(antibiotics) ah, and there are bacteria that, while not being immune to antibiotics, know how to hide from them. then they come back a few weeks later. e.g., those critter that give you a throat inflammation.08:26
DocScrutinizer05who's managing the openmoko servers right now?08:26
wpwrakmaybe harald ?08:26
DocScrutinizer05I'm asking since I got the extreme pleasure to somehow got shanghaied for *.maemo.org infra migration08:27
DocScrutinizer05(nokia stops funding)08:28
DocScrutinizer05and i'm really not a brilliant sysadmin08:28
DocScrutinizer05yet it seems I'm the most brilliant one of those in duty now08:28
DocScrutinizer05anyway basically the maemo infra looks pretty similar in config to what we had (have?) at openmoko08:31
DocScrutinizer05a few dedicated servers with a number of VMs running on them08:31
DocScrutinizer05you know of any legal issues with moving a forum like talk.maemo.org from a US based server to a EU based one?08:33
DocScrutinizer05one of those in charge of the migration claims it can't be done since users might sue the owner of the forum08:34
wpwrakdunno. maybe ask the folks there - if nobody complains about the idea, then it ought to be safe ;)08:34
wpwrak(folks = users)08:34
wpwrakthere's always the risk that you trip over some laws ...08:34
DocScrutinizer05I for the life of mine couldn't figure what except private mail might be sensitive data in a form. and private mail we could drop prior to moving the hosting to EU08:35
DocScrutinizer05in a forum*08:35
wpwrakit would depend on whether you can keep the same contractual terms08:36
wpwrakif you have to change them in a way that makes them (or a bit of them) worse for the user, they may have something to complain about08:37
DocScrutinizer05I'm already that pissed by those hobby lawyers raising those concerns that I threated them I'll do a wget backup of the whole talk.maemo.org forum so users can browse the archive. then start a new forum as replacement for talk.maemo.org (aka tmo)08:37
DocScrutinizer05(contractual terms) seems to me all the public posts are CC08:38
DocScrutinizer05the user profiles hold pretty little data, and most if not all of that can get dropped without losing too much of the functionality08:39
DocScrutinizer05^^^ me08:40
wpwrakif you want to play it safe, just start from scratch. no user accounts, no posts, no mails, etc.08:41
wpwrakor just leave things where they are :)08:41
DocScrutinizer05drop PM and everything but user-nick and password-hash, and I couldn't see anythign we could get sued for08:41
DocScrutinizer05yeah, if nothing else helps, i'd rather drop user accounts all together instead of keeping that host in US while everything else moves to Hetzner08:42
DocScrutinizer05there might be "privacy critical data" like IP etc in (sys)logs but those obviously should get dropped before migration08:44
DocScrutinizer05aaah wait, email-addr08:48
DocScrutinizer05for password recovery etc08:48
DocScrutinizer05meh, and I wonder where my headache's from08:50
wpwrakmaybe you could do some opt-in: let users flag their account for moving. give everyone a month or so, then copy everything over that's been flagged, delete the rest.08:50
DocScrutinizer05the fun bit: we got til 1.1.201308:51
wpwrakflagging an account would also include forum posts. some threads may get confusing if a lot of stuff is missing, but if the user community is still active, it may not be so bad08:52
wpwraktight schedule. maybe you can get a bit more time, say, a month ?08:52
DocScrutinizer05that's what I suggested yesterday08:52
wpwrakif you have a specific migration plan, then it wouldn't sound like slacking :)08:53
DocScrutinizer05answer: "stop those destructive comments please"08:53
wpwrakand why exactly do you wish to take care of that ?08:53
DocScrutinizer05they shanghaied me08:54
wpwrakmaybe you're hanging out with the wrong crowd08:54
DocScrutinizer05but to give a correct answer why I bother about keeping maemo.org infra operational: I like my N900 and I'm afraid its usefulness stands or falls with availability of proper info from tmo and wiki.m.o, and of apps via maemo repositories09:01
wpwrakhmm, sounds like an uphill battle. well, the rest of the n900 survivors will thank you :)09:02
DocScrutinizer05sure it's an uphill battle, like is e.g. commodore amiga user group09:06
DocScrutinizer05as long as most of the community still thinks there's no replacement for N900 anywhere, it will live on09:07
Dr_Hecklethis isn't the place to ask my question, but I thought maybe someone could point me to a good channel/server. I'm in a bit of a rush to build a PC, I have the hardware selected, and would like opionions/a discussion on my selections12:06
Dr_Heckle... and I should prob chang my nick for this :D12:07
wpwrakhmm, i wonder why anyone would want to build a switching dc-dc converter that runs at a very low frequency, like 150 kHz. yet the MC34063 series of critters seems to be everywhere. they crawl at 100 kHz and need monstrous external components.22:32
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