highaltitude.log.20080308

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[08:58] <Hiena> Greetings!
[08:58] <Hiena> http://www.dailytech.com/Researcher+Basic+Greenhouse+Equations+Totally+Wrong/article10973.htm <= Oh, my god! What a bad news for the enviromentalist bubble businesses.
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[11:39] <mc-> edmoore, are you there?
[11:40] <mc-> sent you an email instead
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[14:15] <mc-> edmoore, saw your email
[14:15] <edmoore> hi!
[14:15] <edmoore> yeah
[14:15] <mc-> the I90 will need the airframe built
[14:16] <mc-> that will take some time
[14:16] <mc-> 99 or skype? Got a few mins?
[14:16] <edmoore> cool
[14:16] <edmoore> 99?
[14:16] <edmoore> gotta go to a study group in about 5-10
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[18:40] <jcoxon> evening all
[18:40] <edmoore> hi jcoxon
[18:42] <jcoxon> hey edmoore
[18:43] <edmoore> how's it going?
[18:43] <jcoxon> good thanks
[18:43] <jcoxon> was in oxford for yesterday and today
[18:43] <edmoore> ooooh
[18:44] <jcoxon> and have been writing some rubycocoa ground base software
[18:44] <jcoxon> at the moment its just a mission timer
[18:45] <jcoxon> but am going to add things in like ascent rate calculator
[18:50] <jcoxon> if you think of anything that we need
[18:52] <jcoxon> i was thinking of tying in audacity so that it records the data and time stamps it
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[19:40] Nick change: laurence_ -> Laurenceb_
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[19:47] <Laurenceb_> hey there
[19:49] <jcoxon> hey Laurenceb
[19:51] <Laurenceb_> I fried a temperature sensor yesterday :(
[19:52] <Laurenceb_> very annoying, it'll take me ages to make a new one
[19:52] <jcoxon> yeah i think you mentioned
[19:52] <Laurenceb_> I've got the radio reflashed with new code
[19:52] <Laurenceb_> seems to work, but I'll need to see with the scanner
[19:53] <Laurenceb_> I'm using atomic code in a few places
[20:12] <jcoxon> I'm writing some ground control software
[20:12] <jcoxon> just a mission timer etc
[20:13] <Laurenceb_> cool
[20:13] <Laurenceb_> need to do my project report by monday :S
[20:14] <jcoxon> oh dear
[20:15] <Laurenceb_> initial draft
[20:16] <Laurenceb_> the proper version isnt in till after easter
[20:16] <jcoxon> oh okay
[20:16] <jcoxon> well i had fun in oxford for the last 23hrs
[20:16] <jcoxon> 24*
[20:16] <jcoxon> am home now
[20:16] <Laurenceb_> cool
[20:16] <Laurenceb_> You should have come to the end of term party at hughs
[20:16] <Laurenceb_> I forgot to say :(
[20:17] <jcoxon> i was in New College
[20:17] <Laurenceb_> it was rather mad :)
[20:17] <jcoxon> hehe
[20:17] <Laurenceb_> I had to ask two physicists and a biochemist if they could go somewhere private
[20:18] <jcoxon> a bit weird
[20:18] <Laurenceb_> they are
[20:19] <Laurenceb_> I was a little worried for their safety but I'll spare you the sordid details
[20:19] <jcoxon> yeah thats probably best
[20:19] <Laurenceb_> I have a free pirate costume now :P
[20:20] <Laurenceb_> I might ware it on monday :D
[20:27] <Laurenceb_> wtf half my work has dissapeared
[20:27] <Laurenceb_> erm... any ideas what going on?
[20:28] <Laurenceb_> hmmm yes I keep losing entire files/folders off my hdd under linux
[20:28] <edmoore> i like it
[20:28] <edmoore> whoops
[20:28] <Laurenceb_> thius is not good
[20:28] <Laurenceb_> I have backups but...
[20:29] <jcoxon> what filesystem are you using?
[20:30] <Laurenceb_> cant remember.... its not fat or ntfs
[20:30] <Laurenceb_> ext3 I think
[20:31] <jcoxon> hmmmm its journalled then
[20:31] <jcoxon> you might need to sync occasioanlly
[20:31] <Laurenceb_> how can this even happen? I'm confused
[20:31] <Laurenceb_> I sync all the time
[20:32] <Laurenceb_> might I be able to find it anywhere
[20:32] <Laurenceb_> ?
[20:32] <jcoxon> not sure
[20:33] <Laurenceb_> I'm screwed, theres about 4 days work I dont have backed up on CD
[20:34] <jcoxon> what were you doing to lose them?
[20:34] <jcoxon> did they just disappear?
[20:34] <jcoxon> how are your drives partitioned?
[20:34] <Laurenceb_> just vanished
[20:34] <Laurenceb_> theres a fat32 partition for windows
[20:34] <Laurenceb_> this was on the fat32
[20:35] <jcoxon> oh was this on windows?
[20:35] <Laurenceb_> yes, but I'm working on it fom linux
[20:35] <jcoxon> oh
[20:36] <jcoxon> the fat32 driver in linux is quite mature
[20:36] <Laurenceb_> /hda2/
[20:36] <Laurenceb_> is where it was
[20:37] <jcoxon> is it mounted still?
[20:37] <Laurenceb_> yes
[20:37] <jcoxon> mount -l
[20:37] <jcoxon> but all the files are gone?
[20:37] <Laurenceb_> one folder has gone
[20:37] <Laurenceb_> mount -l what?
[20:38] <jcoxon> actually just mount
[20:38] <Laurenceb_> mount: according to mtab, /dev/hda2 is already mounted on /media/hda2
[20:38] <jcoxon> that'll show whats mounted
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[20:39] <Laurenceb_> http://pastebin.com/d17419403
[20:40] <jcoxon> i'm not sure
[20:40] <jcoxon> you could perhaps unmount and remount it
[20:40] <jcoxon> or boot into windows
[20:40] <jcoxon> but
[20:40] <jcoxon> there is no guarentee
[20:41] <Laurenceb_> how do I unmount?
[20:41] <jcoxon> umount /dev/hda2
[20:42] <jcoxon> careful
[20:42] <jcoxon> i'm not responsible if its actually lost!
[20:42] <Laurenceb_> its busy
[20:42] <jcoxon> hmmmmm
[20:43] <jcoxon> are you accessing it?
[20:43] <jcoxon> if so close the file and get out of the directories
[20:43] <jcoxon> (including in the terminal)
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[20:43] <Laurenceb_> its in recent documents
[20:44] <Laurenceb_> but the file is blank
[20:44] <jcoxon> no i mean it won't umount until you stop accessing hte drive
[20:44] <Laurenceb_> well I have
[20:44] <jcoxon> and still busy?
[20:44] <Laurenceb_> yep
[20:44] <Laurenceb_> shall I try booting to windows?
[20:45] <jcoxon> you could try
[20:45] <jcoxon> let it shutdown properly
[20:45] <Laurenceb_> cyas
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[20:48] <Laurenceb1> not here :(
[20:49] <Laurenceb1> theres about a weeks work in there
[20:49] <Laurenceb1> I'm just going to have to stop using the HDD on here
[20:49] <Laurenceb1> I dont trust it
[20:53] <Laurenceb1> shit all my gnuplot scripts are gone as well
[20:53] <Laurenceb1> all my work is just dissapearing into a black hole
[21:04] <Laurenceb1> could I raw read the disk?
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[22:27] <mc-> just been playing with cutdowns, got a piece of wire to cut fishing line now
[22:28] <mc-> needs 3AA batteries
[22:28] <mc-> what's the normal method for a cutdown?
[22:28] <jcoxon> explosive
[22:29] <mc-> this is much easier, and won't go off in your face.
[22:29] <edmoore> i just don't trust melting through nylon string with nichrome wire
[22:29] <edmoore> both conceptually and subsequently based on hard evidence
[22:30] <mc-> it didn't work once?
[22:30] <edmoore> several times
[22:30] <edmoore> it so often gets fatigued by the swinging and shaking on the way up
[22:30] <edmoore> it just breaks
[22:31] <mc-> shouldn't the nylon that will be cut be securely positioned, so it doesnt move?
[22:31] <edmoore> in theory yes, but it can only be so secure so that it actually releases when cut through
[22:32] <edmoore> i think the solution is to make a very flexible electrical connection to the wire
[22:32] <edmoore> so that that flexible coupling does all the relative motion between payload and string, not the nichrome wire
[22:32] <edmoore> even then....
[22:33] <mc-> can there be a few turns of nylon wrapped around 2 posts?
[22:33] <mc-> then it can be really thin nylon
[22:33] <edmoore> if that'll stop it moving, i guess so. but it does work harden very easily. just a word of caution
[22:34] <mc-> fishing line is better
[22:35] <edmoore> you could set the whole thing in some suger+potassium nitrate
[22:35] <mc-> I've got a few metres of slow match, I might try a few mm of that.
[22:35] <edmoore> it melts together under low temps and forms a peanut-butter type consistancy and colour
[22:35] <edmoore> and it'll harden quite nicely
[22:36] <edmoore> and it'll burn like slow-burn rocket fuel when it gets heated up
[22:36] <mc-> is a few mm of slow match safe?
[22:36] <mc-> or will it blow up in my face?
[22:37] <mc-> I'm going to have to try it now
[22:37] <mc-> call the fire brigade, if I don't send a msg
[22:37] <edmoore> :)
[22:37] <edmoore> it should be ok
[22:42] <mc-> nothing happened
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[23:32] <Laurenceb_> hi again guys
[23:34] <akawaka> got my amateur radio license this morning
[23:35] <akawaka> anyone familiar with faa regulations related to balloon flights?
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[00:00] --- Sun Mar 9 2008