highaltitude.log.20111123

[00:12] <remyzero> you sunk my battleship
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[00:40] <fsphil> hehe, couldn't sleep so was scanning on the radio (as you do)
[00:41] <fsphil> accidentally stumbled onto a radiosonde signal
[00:42] <fsphil> 402.7 mhz, currently falling fast. couldn't decode the position though, not sure if I'm using the program right though
[00:43] <NigeyS> ooooooo
[00:43] <NigeyS> fsphil, while ure here ... im getting only time out of the gps :|
[00:43] <fsphil> FM, you're handheld should receive it NigeyS
[00:43] <NigeyS> oo
[00:45] <Darkside> fsphil: what does it sound like
[00:45] <Darkside> is it a sequence of falling tones?
[00:45] <Darkside> or does it sound like data
[00:45] <fsphil> it's data - I got some of it decoded
[00:45] <Darkside> sondemonitor
[00:45] <fsphil> yea
[00:45] <fsphil> via wine
[00:45] <fsphil> not ideal
[00:45] <Darkside> it should be fine
[00:45] <Darkside> i've done that before
[00:45] <fsphil> fonts where a bit funky
[00:46] <NigeyS> nothing on 402.7 but some weird stuff on .6625
[00:46] <fsphil> but it give me temperature, pressure, altitude pressure
[00:46] <fsphil> no GPS position though
[00:46] <Darkside> whats the model?
[00:46] <fsphil> one sec
[00:46] <Darkside> oh you wont get GPS directly
[00:46] <Darkside> you need to have the ephemeris or almanac data on your PC
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[00:47] <Darkside> you also need to know the launch location
[00:47] <Darkside> download almaanc from here: http://navcen.uscg.gov/?pageName=currentAlmanac&format=sem
[00:47] <Darkside> tools -> arm
[00:48] <fsphil> F4953097
[00:48] <Darkside> hmm
[00:48] <Darkside> ack, not sure how you load the alamanac now
[00:48] <Darkside> i think its tools -> gps arm
[00:48] <Darkside> yeah it is
[00:48] <Darkside> you put in info in there
[00:48] <Darkside> then it asks you for the almanac file
[00:49] <NigeyS> i got it, on .725
[00:49] <fsphil> not sure where it was launched from
[00:49] <Darkside> it actually tells you the frequency in sondemonitor
[00:49] <NigeyS> thats quite a strong signal to
[00:50] <Darkside> or it should
[00:50] <Darkside> NigeyS: approx 50mW
[00:50] <Darkside> i've got a few of these sondes here :P
[00:50] <fsphil> it reports 402.700 mhz
[00:50] <NigeyS> oo
[00:50] <Darkside> theres one in the title image of http://rfhead.net/
[00:50] <fsphil> temperature got to -60c!
[00:51] <Darkside> fsphil: whats the pressure altitude
[00:51] <fsphil> I'm playing back a recording, currently 22.6km
[00:51] <NigeyS> oo yup thats definately it
[00:51] <Darkside> oh a recording?
[00:51] <Darkside> NigeyS: do you hear it now?
[00:52] <fsphil> it's there another one up mayne?
[00:52] <fsphil> maybe?
[00:52] <Darkside> yeah there would be one now
[00:52] <fsphil> lemme try live
[00:53] <Darkside> crap theres no globaltuners around
[00:54] <NigeyS> bah lost my spare battery!
[00:54] <fsphil> nah, nothing here
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[00:55] <fsphil> any way to tell where these are launched from?
[00:55] <Darkside> not really
[00:55] <NigeyS> :(
[00:55] <Darkside> i think theres a few launch sites in the UK
[00:55] <NigeyS> would these be met office things ?
[00:55] <Darkside> i cant hear it on the dover globaltuners
[00:55] <Darkside> NigeyS: yes
[00:55] <NigeyS> oo cool
[00:56] <fsphil> the one I was receiving is gone now
[00:56] <fsphil> probably on the ground
[00:56] <NigeyS> meh i need to get an adapter cable for the handheld Darkside or id have streamed it live for ya
[00:56] <fsphil> it was about 15km when I lost it
[00:56] <fsphil> which means it was probably quite far from me
[00:56] <fsphil> in saying that
[00:57] <fsphil> I was using a little dual band whip sitting in my window
[00:57] <NigeyS> lol, hey that whip of ures is pretty dam good!
[00:58] <fsphil> that was neat, will have to try and track one properly next imte
[00:58] <fsphil> time
[00:58] <fsphil> can't type
[00:58] <Darkside> anyway, you'll find sondes in teh air at 0Z and 12Z
[00:59] <Darkside> they usually launch approx 45 min before that time
[00:59] <NigeyS> oo
[00:59] <NigeyS> so theyd launch at midnight ?
[01:00] <Darkside> yeah
[01:00] <fsphil> that makes sense
[01:00] <Darkside> usually automated launchers
[01:00] <fsphil> they don't seem to go very high
[01:00] <Darkside> oh, they do
[01:00] <Darkside> they should get to about 28km if its anything like the ones they launch here
[01:01] <Darkside> but they really only use the data up to about 10km alt
[01:02] <Darkside> anyway, balloons are launched all around the world for the 0Z and 12Z data
[01:02] <fsphil> the map doesn't seem to work in wine
[01:02] <Darkside> its how the NOAA wind model gets real data
[01:02] <Darkside> fsphil: do you have maps to put into it?
[01:02] <fsphil> doesn't it download them?
[01:02] <Darkside> didnt think so
[01:02] <Darkside> maybe a new version does
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[01:03] <fsphil> there's a map button, but it just displays a screen with "unknown type" repeated across it
[01:05] <NigeyS> hrm cant we check notam data to see where their launched from? they must have a blanket notam from midnight .. should be on the list ?
[01:05] <Darkside> dunno
[01:07] <fsphil> http://badc.nerc.ac.uk/data/radiosglobe/europe.html
[01:08] <fsphil> quite a few if that's accurate
[01:10] <Darkside> wow thts heaps
[01:10] <Darkside> i doubt they all launch at the same time tho
[01:10] <fsphil> "The six main radiosonde stations in the UK are Camborne, Lerwick, Albemarle, Watnall, Castor Bay and Herstmonceux."
[01:10] <fsphil> from http://www.weatheronline.co.uk/reports/wxfacts/Radiosonde.htm
[01:13] <NigeyS> schweet, will listen out at midday
[01:16] <fsphil> there's a recording here: http://www.sanslogic.co.uk/files/Record0_20111123_002651.wav.xz
[01:16] <fsphil> it's the raw data from the funcube dongle, will need spectravue to make any sense
[01:16] <fsphil> anyways, nightall :)
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[07:02] <earthshine> Morning
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[08:49] <gonzo_> morning world
[08:50] <zyp> morning wood
[08:51] <gonzo_> does anyone have any rough power consumption figures for a telem/tracking payload. GPS/uProc/LPD TX ?
[08:51] <gonzo_> just wondering how mine stacks up
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[09:20] <costyn> hello and good morning
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[10:32] <vk5gr> ping juxta
[10:33] <Darkside> vk5gr: he said he liked the video, maybe a bit too much on the colour correction
[10:34] <Darkside> but if the other guy likes it, then thate fine
[10:34] <vk5gr> thats what he said on the e-mail - wanting to find out what Toby though
[10:34] <Darkside> mm not sure where juxta is
[10:35] <vk5gr> I can back the gamma and colour back a little fairly easy - will take a bit to render out but thats fine - just need to know what he wants
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[10:37] <vk5gr> darkside: the weather for the weekend looks a bit fluky too - early sunday (like 8.30am liftoff) is looking the best - too late and we risk dropping it in Lake Alexandrina
[10:38] <Darkside> yeah i saw that
[10:38] <vk5gr> saturday is out - too far north - dont want to land in the Barossa I think :-)
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[10:39] <vk5gr> did Terry give you the password to watch it by any chance? (been keeping that very quiet at this stage)
[10:39] <Darkside> yeah i saw it
[10:39] <vk5gr> your thoughts?
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[10:40] <Darkside> looks pretty good
[10:40] Nick change: GW8RAK_ -> GW8RAK
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[10:41] <vk5gr> i was pretty happy with it but the comment about too much colour correction has me worried i'll admit. i dont want people unhappy about the work so am happy to tweak as required
[10:42] <vk5gr> (personally - I really want to explore alternate cameras - something that doesnt overload when we get above and in the clouds.
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[11:19] <gonzo_> Now there are a few more of the regulars on here, I'll repost my question:
[11:19] <gonzo_> <gonzo_> does anyone have any rough power consumption figures for a telem/tracking payload. GPS/uProc/LPD TX ?
[11:19] <gonzo_> <gonzo_> just wondering how mine stacks up
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[11:21] <daveake> Depends on the GPS, mainly. Somewhere in the range 65-120mA total
[11:21] <daveake> Will use more as it gets a lock
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[11:24] <gonzo_> Thanks daveake
[11:24] <gonzo_> is that the current at 5v?
[11:27] <daveake> All the GPS units I've used have been 3V3. I prefer to use a 3V3 processor so interfacing is direct without any level shifting. Battery voltage needs to be high enough to maintain that 3V3 after the regulator
[11:28] <gonzo_> suspect the gps chipsets have moved on since mine.
[11:29] <daveake> My first flight used a very old GPS. Worked fine even at altitude but the current draw was rather high
[11:29] <gonzo_> About 1.5watts total. So it's a little electric fire. But won't have any problems with batties freezing
[11:29] <daveake> Indeed!
[11:30] <gonzo_> have some jupiter12 units
[11:30] <Darkside> just make sure they work at >18km alt
[11:30] <gonzo_> batt will be watm, but hopefully it won't spill any acid on the way!!!
[11:30] <daveake> My last flight used 3 AAAs. The voltage got pquite low because it got so cold - almost no heat generated internally, plus the insulation was a bit minimal
[11:31] <daveake> I used jupiter12 and it worked fine up the the burst alt of 29km. Might depend on revision and firmware though
[11:31] <gonzo_> have to investigate
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[11:33] <daveake> On checking, it was a Jupiter 11 not 12.
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[12:07] <TimZaman> aaaaah
[12:08] <TimZaman> can someone change the trackerheader?
[12:08] <TimZaman> Launch is tomorrow!
[12:11] <TimZaman> Pleeeaeaaased
[12:22] <TimZaman> Anyone
[12:22] <TimZaman> Ping everyone
[12:23] <Darkside> fffff
[12:23] <Darkside> tell me what you want in it
[12:23] <TimZaman> yeey
[12:23] <TimZaman> Darkside will you be tracking tomorrow :D?
[12:23] <TimZaman> something standard
[12:23] <Darkside> depends on the time
[12:23] <TimZaman> http://groups.google.com/group/ukhas/browse_thread/thread/daa74453e2da7604
[12:23] <costyn> TimZaman: hiya... where in Utrecht are you launching from?
[12:25] <Darkside> TimZaman: whats the mission name
[12:25] <TimZaman> Ehmm
[12:25] <costyn> TimZaman: Utrecht was my old stomping grounds when I was still a student
[12:25] <Darkside> fffffff
[12:25] <TimZaman> POLFROSPA
[12:25] <TimZaman> costyn: ahh those days
[12:25] <Darkside> TimZaman: i need something to fill $heading_mission="blah"; and $heading_group = "blah";
[12:25] <TimZaman> no province of utrecht
[12:25] <TimZaman> we dont know yet
[12:25] <gonzo_> what time gmt?
[12:26] <TimZaman> northerny
[12:26] <Darkside> last time it was //$heading_group = 'Monday 07/11/2011 1400 CEST (<a href="http://ukhas.org.uk/ish" target="_blank">ISH</a>) Delft, The Netherlands.<br />434.650MHz USB, choose
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[12:26] <TimZaman> 1130 CEST
[12:26] <Darkside> \'PD4TA\' from list / <a href="http://www.timzaman.nl/?page_id=1632&lang=en" tar
[12:26] <Darkside> get="_blank">Full launch details</a>';
[12:26] <TimZaman> oh yeah dont really have detailed launch info
[12:26] <TimZaman> maybe later :P
[12:26] <Darkside> just give me something to put in those 2 variables
[12:26] <Darkside> and i'll do it
[12:26] <TimZaman> got a payload to build
[12:26] <TimZaman> okay
[12:26] <TimZaman> www.timzaman.com
[12:26] <TimZaman> that sounds normal
[12:27] <TimZaman> ill put it on the frontpage.
[12:27] <gonzo_> (I'd never heard of CEST !)
[12:32] <Darkside> TimZaman: is that ok?
[12:32] <Darkside> (check the tracker)
[12:32] <costyn> TimZaman: coincidentally recieving my radio tommorow morning; still have to work tho
[12:33] <gonzo_> I should be able to leave something running
[12:34] <gonzo_> though will be at work during the flight
[12:38] <TimZaman> that'd be sweet
[12:38] <TimZaman> Darkside: very fair. thanks
[12:42] <gonzo_> what's the current predicted path?
[12:46] <TimZaman> east
[12:48] <gonzo_> that's going to be quite a distance for me, but there is some antenna gain at my end so will see what we get
[12:48] <TimZaman> :)
[12:49] <TimZaman> darkside somehow managed to decode 600baud with some dutch routing or something
[12:53] <gonzo_> I'll be at work, so will have to remote my home system
[12:55] <nosebleedKT> hello
[12:55] <nosebleedKT> ping fsphil
[12:56] <nosebleedKT> ping SpeedEvil
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[13:19] <TimZaman> Darkside: could you change the launch detailslink to www.polaroidsfromspace.com
[13:19] <Darkside> k
[13:19] <TimZaman> not that that exists yet, but before tomorrow it will
[13:19] <TimZaman> :P
[13:19] <TimZaman> ill make a sweet, sweet html page
[13:19] <TimZaman> Darkside: thanks
[13:20] <Darkside> done
[13:23] Nick change: AndChat- -> NigeyMoby
[13:23] <TimZaman> ty
[13:23] <SpeedEvil> nosebleedKT: ?
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[13:33] <fsphil> looking forward to seeing the photos -- I hope they develop ok
[13:34] <TimZaman> this is going to be an allnighter.
[13:35] <staylo> Hey, Phobos-Grunt is still talking http://www.bbc.co.uk/news/science-environment-15850516
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[13:36] <costyn> staylo: interesting... man, it sucks when you balloon payload dies, but this is a whole other level of 'suck' :)
[13:37] <fsphil> seen that earlier - hopefully it's not just a one-way link
[13:37] <staylo> I was reading about the 1980s soviet Phobos probes, 2 probes lost within 6 months. That can't have been fun! First one was lost because they accidentally triggered a ground test program which disabled the thrusters..
[13:37] <gonzo_> ariane 5 suffered the same prob
[13:40] <fsphil> phobos doesn't want visitors
[13:44] <NigeyMoby> to much vodka, its hungover.
[13:45] <staylo> 2nd Phobos mission got some nice pictures before it failed though :) http://www.strykfoto.org/phobos2.htm
[13:47] <fsphil> oh cool, I've never seen them before
[13:48] <fsphil> they're brilliant
[13:48] <x-f> they received the radio carrier yesterday from Phobos-Grunt
[13:48] <x-f> no telemetry yet, but at least something
[13:48] <fsphil> ah, the bbc article seemed to suggest it was data
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[13:54] Nick change: number10_ -> number10
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[14:33] <Jessica_Lily> hey folks
[14:35] <hibby> hola
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[14:42] <UpuWork> afternoon
[14:42] <costyn> man work is boring
[14:43] <gonzo_> seconded
[14:46] <hibby> motion passed
[14:46] <jonsowman> what work?
[14:46] <jonsowman> :P
[14:46] <SamSilver_> 0.1 micro Farad is = 100 pF True or false?
[14:46] <jonsowman> SamSilver_: false
[14:47] <jonsowman> 0.1u = 100n
[14:47] <SamSilver_> oops
[14:47] <zyp> = 100 000p
[14:47] <SamSilver_> thanx
[14:47] <SamSilver_> typo made me more stupit then I am :p
[14:48] <jonsowman> haha
[14:48] <zyp> that's okay, I didn't notice the difference from how you usually are anyway
[14:49] <zyp> :p
[14:49] <SamSilver_> I had an email addy that was stu_pit@hotmail.com
[14:51] <nosebleedKT> SUPER. my arduino radioshield works as a APRS receiver!!!
[14:55] <eroomde> number10: http://talks.cam.ac.uk/talk/index/34776
[14:55] <eroomde> if you happen to be around
[14:56] <hibby> super duper :)
[14:57] <number10> thanks eroomde, I'll take a look and see if I can come
[14:57] <number10> Charles Lee used to work here
[14:59] <eroomde> come and say hello at the end if you do
[14:59] <number10> ok
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[15:01] <WillDuckworth> ooo enjoy eroomde
[15:01] <WillDuckworth> do you badger cub talk as per ukhas conf - all will be good :)
[15:01] <WillDuckworth> your
[15:02] <eroomde> well i was going to give the exomars testing talk as per ukhas
[15:02] <eroomde> maybe a bit more formally
[15:02] <eroomde> but then they told me the slot was 2 hours
[15:03] <eroomde> so it'll probably be the grand complete history of CUSF 2006-2011
[15:03] <SamSilver_> lose the shorts then ed
[15:03] <SpeedEvil> And add some careoke.
[15:03] <eroomde> yes i'll probably wear trousers for this
[15:06] <number10> sounds like it will be interesting
[15:07] <eroomde> except mainly the exomars stuff. otherwise it's just a dry chronology
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[16:28] <nosebleedKT_> fsphil: http://a3.sphotos.ak.fbcdn.net/hphotos-ak-ash4/317389_323519000995484_259791880701530_1463227_516128066_n.jpg
[16:28] <nosebleedKT_> Darkside you too
[16:28] <nosebleedKT_> worldwide unique arduino aprs receiver which outputs plain-text messages to your serial port
[16:29] <nosebleedKT_> :))
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[17:32] <Paradoxial> nosebleedKT: Nice board, I like the font you used
[17:32] <Paradoxial> What is it?
[17:33] <nosebleedKT> what you mean front?
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[17:33] <nosebleedKT> a font
[17:33] <nosebleedKT> some creepy it was
[17:33] <nosebleedKT> for fun
[17:34] <nosebleedKT> its called chiller
[17:34] <nosebleedKT> :P
[17:34] <nosebleedKT> from thriller i guess :P
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[18:35] Nick change: quail_linux -> quail
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[19:39] <nosebleedKT> silent hill
[19:39] <nosebleedKT> this place cant be silent
[19:40] <nosebleedKT> hab(and not only) info must flow all the time here
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[20:18] <Laurenceb_> sup
[20:18] Action: Laurenceb_ has usb mass storage working
[20:20] <Laurenceb_> http://www.ebay.com/itm/New-USB-2-0-SDHC-SD-MMC-High-Speed-Memory-Card-Reader-Adapter-/280765211334?pt=PCC_Drives_Storage_Internal&hash=item415ee922c6
[20:20] <Laurenceb_> saved myself a lot of money there
[20:21] <Upu> ah Laurenceb you're clever
[20:21] <Upu> I'm trying to simulate the NTX2 resistor circuit
[20:21] <Laurenceb_> the clever bit is that its opensource code and i can store files on there with the micro
[20:22] <Upu> do you think the screen shot below is accurate "simulation" of a NTX2 circuit
[20:22] <Upu> 1 sec...
[20:22] <Laurenceb_> otherwise itd be silly as theres some many asics and stuff to do it
[20:22] <Upu> zhttp://imagebin.org/185346
[20:23] <Upu> http://imagebin.org/185346
[20:23] <Upu> thats wrong actually
[20:23] <Upu> as the top voltage is going 3.3v to 0 too
[20:24] <Laurenceb_> cant you just work it out mathematically
[20:25] <Upu> No
[20:25] <Upu> I mean
[20:25] <Upu> I can't
[20:26] <Laurenceb_> V=IR
[20:26] <Upu> yeah I know that one
[20:26] <Upu> let me go sit down and have another look
[20:27] <Laurenceb_> so add up the voltages
[20:27] <Laurenceb_> and make sure current is conserved
[20:30] <Upu> the second resistor even though its at 0v seems to affect it
[20:30] <fsphil-laptop> it will yea
[20:31] <fsphil-laptop> like a pull down
[20:31] <Upu> and its this interaction I can't work out how to do the maths
[20:31] <fsphil-laptop> nor me
[20:31] <Upu> phew thought it was just me being thick
[20:31] <fsphil-laptop> I wonder if putting the pin in output mode would stop that
[20:32] <fsphil-laptop> er, input mode even
[20:32] <Upu> I've got one of Rob's Icarus III boards here and i've measured the resistors , they don't make any sense
[20:32] <Upu> they shouldn't work
[20:32] <Upu> but they do
[20:32] <nosebleedKT> fsphil-laptop:
[20:32] <nosebleedKT> http://a3.sphotos.ak.fbcdn.net/hphotos-ak-ash4/317389_323519000995484_259791880701530_1463227_516128066_n.jpg
[20:32] <Upu> and when I put the same resistance in it doesn't work
[20:33] <fsphil-laptop> odd
[20:34] <Upu> fsphil did we agree to get 1Hz of shift you need to vary the voltage by 0.001v ?
[20:34] <Upu> or was it 0.0005v ? I can't remember if 0-3v = 3000Hz or 6000hz
[20:34] <fsphil-laptop> the shift was slightly different to what we predicted
[20:34] <fsphil-laptop> but I think we estimated 0.001v
[20:35] <fsphil-laptop> looking well nosebleedKT. what's the ic?
[20:35] <Upu> ok
[20:35] <fsphil-laptop> nah it would be less than that
[20:35] <fsphil-laptop> the bandwidth of the ntx2 is 15khz isn't it?
[20:35] <Upu> so does anyone know how to model this circuit for the NTX2 taking into account the pull down effect ?
[20:36] <fsphil-laptop> the 100k in the ntx2 and the resistor + pin set to 0 are in parallel
[20:38] <fsphil-laptop> calculating resistors in parallel is fun
[20:39] <Jessica_Lily> http://26.media.tumblr.com/tumblr_lv1nq9UyGr1qzcv7no1_500.jpg <-- xD
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[20:41] <fsphil-laptop> I watch our website logs sometimes, and it's always amazing how many people put in web addresses and phone numbers into the login box clearly marked "Email"
[20:41] <Dan-K2VOL> haha
[20:41] <fsphil-laptop> I'm tempted to phone up one of the numbers and say "You did that wrong" and hang up
[20:56] <fsphil-laptop> mr.tim's on youtube: http://www.youtube.com/watch?v=kShT_Z3GJSU
[21:05] <Zuph> fsphil-laptop: Very nice
[21:06] <NigeyS> he's a very confident, natural speaker
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[21:36] <TimZaman> hi all
[21:36] <TimZaman> as i said
[21:36] <TimZaman> its going to be an allnighter :D
[21:36] <TimZaman> 2 payloads does indeed mean 2 times the work
[21:37] <TimZaman> Where to I start
[21:37] <TimZaman> aaaah, a good movie.
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[21:42] <fsphil-laptop> you haven't started yet?
[21:42] <fsphil-laptop> I thought I was the only one who left things to the night before
[21:44] <Jessica_Lily> huh?
[21:45] <fsphil-laptop> building the payload boxes the night before the flight
[21:45] <Jessica_Lily> wow
[21:45] <Jessica_Lily> i'd do it weeks before
[21:45] <Jessica_Lily> but im like that &. i'd hate to delay a launch
[21:45] <fsphil-laptop> I build everything early but don't put it all together at the last minute
[21:45] <fsphil-laptop> at=until
[21:46] <Jessica_Lily> cool i guess :P
[21:46] <Jessica_Lily> i still would at least do it a week before
[21:46] <Jessica_Lily> minimum
[21:46] <Jessica_Lily> most likely more
[21:46] <fsphil-laptop> I always *plan* to
[21:46] <TimZaman> fsphil indeed me too exactly
[21:46] <fsphil-laptop> never works out that way
[21:47] <Jessica_Lily> xD
[21:47] <Jessica_Lily> the only reason i'd cancel is illness or weather i think
[21:47] <Jessica_Lily> :P
[21:47] <fsphil-laptop> weather and work seems to be conspiring to stop my launch on sunday
[21:47] <Jessica_Lily> which with my reck of a body is more likely than anything else :P
[21:47] <fsphil-laptop> 20mph ground winds don't make for an easy launch :)
[21:47] <TimZaman> omg who is ava
[21:48] <TimZaman> can someone clear the trackerinfo? and clear it tomorrow around 10:00 as well?
[21:48] <TimZaman> launch at 1200
[21:48] <Jessica_Lily> i only have enough milk for like 3 more coffees but im in my pjs i don't want to wander to the shop
[21:49] <fsphil-laptop> I've a cup of lemsip here. stoopid flu
[21:50] <Jessica_Lily> i hate the taste of lemsip
[21:50] <fsphil-laptop> me too, but it's better than some of the other flu medicines
[21:50] <Jessica_Lily> xD im the person who still has calpol though :P
[21:50] <fsphil-laptop> haha
[21:51] <fsphil-laptop> yea it's not bad
[21:51] <Jessica_Lily> the funniest part is& im not joking i really do still have calpol ;P
[21:52] <TimZaman> fsphil-laptop: programming question
[21:53] <fsphil-laptop> aye
[21:53] <TimZaman> if i say "if X=0 {...} else if X<9 {}"
[21:53] <TimZaman> and if X is 0
[21:53] <TimZaman> both are true
[21:53] <TimZaman> which would it prefer
[21:53] <Jessica_Lily> the first
[21:53] <fsphil-laptop> it runs them in order
[21:53] <fsphil-laptop> so yea the first
[21:53] <TimZaman> does it?
[21:53] <Jessica_Lily> really?
[21:53] <Jessica_Lily> it does both
[21:53] <TimZaman> nooo
[21:53] <fsphil-laptop> depends on the language
[21:53] <TimZaman> i am certain it does not do both
[21:53] <TimZaman> c++
[21:53] <fsphil-laptop> C will do it in order
[21:53] <fsphil-laptop> C++ too
[21:53] Action: SpeedEvil notes that tesco delivers in only 11 hours.
[21:53] <Jessica_Lily> just the first
[21:53] <TimZaman> yeah
[21:54] <TimZaman> so okay
[21:54] <Jessica_Lily> C++ will only do the first
[21:55] <TimZaman> fsphil-laptop: this would work right
[21:55] <TimZaman> (time_ascent+1400000) < millis() )
[21:55] <TimZaman> both long unsigned
[21:55] <fsphil-laptop> should do
[21:56] <fsphil-laptop> avr sometimes casts things oddly unless you are explicit
[21:56] <fsphil-laptop> avr-gcc*
[21:57] <fsphil-laptop> doesn't like working with 64 bit integers I found :)
[21:57] <Jessica_Lily> you're just doing the coding now?
[21:57] <Jessica_Lily> thats a tad worrying
[21:57] <Jessica_Lily> especially if you're not a proficient programmer
[21:58] <TimZaman> Jessica_Lily: dont be such a woman
[21:58] <Jessica_Lily> huh? and thats a bit difficult for me :P
[21:58] <TimZaman> My point exactly!
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[21:59] <TimZaman> i am just writing an extra routine
[21:59] <TimZaman> and i have had enough weird crap with c++ in the past so thats why im asking
[21:59] <Jessica_Lily> o okay
[22:00] <Jessica_Lily> if you want you can show me your code and ill look over it
[22:00] <TimZaman> the code is fine
[22:00] <TimZaman> its just difficult when to take a picture
[22:00] <Jessica_Lily> :P okay then
[22:00] <TimZaman> i have 10 pictures to take
[22:00] <TimZaman> and the camera shuts down after 5 minutes
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[22:01] <TimZaman> and it has to be kinda foolproof
[22:01] <TimZaman> like taking pictures if it doesnt go very high, when to take them, when to spend them all in a last effort, etc
[22:01] <Jessica_Lily> spend?
[22:02] <TimZaman> www.polaroidsinspace.com
[22:02] <TimZaman> needs no explanation
[22:02] <TimZaman> www.polaroidsfromspace.com
[22:02] <TimZaman> oops
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[22:25] <TimZaman> while i did it i was just thinking "it would be pretty funny if it turns out i put this wire in the wrong pin"
[22:25] <TimZaman> I just did it haha
[22:31] <fsphil-laptop> eek
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[22:41] <SpeedEvil> http://www.ebay.co.uk/itm/Orgone-Cell-Phone-Electronics-EMF-Radiation-Mitigater-/170612825294?pt=LH_DefaultDomain_0&hash=item27b9511cce
[22:41] <fsphil-laptop> lol
[22:41] <fsphil-laptop> don't even have to click that one
[22:41] <Zuph> SpeedEvil: lol
[22:42] <fsphil-laptop> deadly orgone?
[22:42] <SpeedEvil> I was looking for NiFe batteries.
[22:42] <SpeedEvil> Someone on ##electronics managed to score 20kWh of them for ridiculous price.
[22:42] <Zuph> For a while in the early 2000's, it was extremely fashionable to put a "signal boost" sticker on your phone. Just some etched metal pattern on an adhesive backing.
[22:43] <SpeedEvil> I'd love to share a load with him - but shipping from california...
[22:43] <SpeedEvil> OFCOM has a report on cellphone antenna decoratrs.
[22:43] <Zuph> Every tech-impaired family member had half a dozen.
[22:43] <SpeedEvil> Unsurprisingly, connecting a LED to an antenna makes it emit quite a lot of 3rd harmonic.
[22:44] <Zuph> Heh, these are different beast. More non-functional :-p
[22:45] <Zuph> Right now, "Power Bracelets" are the newest gas-station fad.
[22:46] <Zuph> With magic gel inside that increases strength and endurance!
[22:47] <SpeedEvil> Are these bracelets worn around the wrist, or other appendages?
[22:48] <Zuph> Yep
[22:48] <Zuph> Anywhere you want :-p
[22:48] <Zuph> The intended usage is wrist or ankle.
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[23:07] <TimZaman> can someone clear the tracker please? Randomskk Upu ?
[23:07] <SpeedEvil> Can anyone point me to a nice easy to use FEA program. 2D is fine.
[23:08] <SpeedEvil> I want to simulate a pipe through soil, with a varying temperature on top of the soil.
[23:08] <SpeedEvil> For heat exchanger optimisation.
[23:12] <Laurenceb_> hehe
[23:12] <Laurenceb_> i tried downloading elmer
[23:12] <Laurenceb_> didnt get much further than that
[23:13] <Laurenceb_> think i need to create a model with another package and import it
[23:13] <Laurenceb_> but obviously you need to define the materials and everything, its massively complex
[23:13] <SpeedEvil> Meh.
[23:13] <SpeedEvil> I can write it in several lines of awk.
[23:13] <Laurenceb_> i wrote 2D+time thermal sim in octave
[23:14] <Laurenceb_> in cylindrical coordinates
[23:14] <SpeedEvil> Yeah - cylindrical is fairly simple.
[23:14] <SpeedEvil> That was two lines.
[23:15] <Laurenceb_> lol ok
[23:15] <Laurenceb_> you're better at this than me
[23:15] <SpeedEvil> Well - not + time.
[23:15] <SpeedEvil> And it wasn't actually a sim - just a calculation of thermal resistance.
[23:16] <Laurenceb_> id do a 2D sim in octave
[23:16] <SpeedEvil> But working out the amount in each volume is quite easy
[23:16] <SpeedEvil> hmm
[23:16] <SpeedEvil> I should learn octave.
[23:16] <Laurenceb_> ill paste my code, just a sec
[23:17] <SpeedEvil> I'm wondering about air-ground heat exchangers, and air-air for ventilation.
[23:17] <Upu> done TimZaman
[23:17] <SpeedEvil> Rotary heat exchangers look funky.
[23:18] <SpeedEvil> And I don't see why I can't do it with pea gravel.
[23:19] <Laurenceb_> http://pastebin.com/xzgc642c
[23:20] <SpeedEvil> Thanks!
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[23:21] <SpeedEvil> Two 6" or so pipes. Packed with pea gravel, and insulated round the outside, side by side. The north ends are both exposed to the outside air. The south ends are connected through a crossover switch to two fixed volume pumps.
[23:22] <SpeedEvil> They flow from inside the house to outside, and reverse. Then they change over, before the temperature of the gravel changes by much.
[23:22] <SpeedEvil> This gets you the performance of a complex counterflow heat exchanger with membranes between the sides.
[23:23] <Laurenceb_> hmm
[23:24] <Laurenceb_> not 100% sure how much you can simplify it
[23:24] <Laurenceb_> my code is cylindrical
[23:25] <Laurenceb_> for investigating thermal flowmeters in biomaterials
[23:27] <Laurenceb_> some of the inputs are to do with that
[23:28] <SpeedEvil> Interesting.
[23:28] <SpeedEvil> It gives me an idea of the syntax anyway
[23:29] <SpeedEvil> The above heat exchanger is annoyingly complex to analyse.
[23:29] <SpeedEvil> As condensation gets to be an issue.
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[23:49] <TimZaman> okay that was fast. done
[23:49] <TimZaman> now what
[23:49] <TimZaman> this was supposed to be an allnighter
[23:49] <TimZaman> oh yeah, gotta make a website.
[23:49] <TimZaman> lol
[23:49] <TimZaman> being such a html pro
[23:50] Action: fsphil-laptop is tracking a weather balloon
[23:50] <TimZaman> Upu UpuWork muchimac gracias
[23:50] <TimZaman> fsphil-laptop: will you be attending tomorrow?
[23:50] <TimZaman> ssdv.
[23:50] <TimZaman> but seriously, have i used ssdv more than you after tomorrow?
[23:50] <TimZaman> phil can you remove the images from your /ssdv/live as well?
[23:51] <TimZaman> just throw them away they have no purpose
[23:51] <fsphil-laptop> TimZaman, officially yes you have already done more images than me :)
[23:51] <TimZaman> Muha
[23:51] <TimZaman> *Is everybody tracking me tomorrow :D*
[23:52] <fsphil-laptop> I'm at work, and too far away :)
[23:54] <fsphil-laptop> hehe, the radiosonde I'm tracking just hit -70c
[23:55] <TimZaman> jezus
[23:55] <fsphil-laptop> 13km up
[23:55] <TimZaman> i cant image how much fun those guys have tracking their balloons for a living
[23:55] <fsphil-laptop> I'm not sure they do- I think all this is done my machine
[23:56] <fsphil-laptop> oh it's warming up
[23:56] <fsphil-laptop> quickly
[23:56] <fsphil-laptop> if you can call -60 warm
[23:57] <TimZaman> would it matter if i paint my payload black?
[23:58] <fsphil-laptop> it should warm it up a bit
[23:59] Action: Laurenceb_ zzz
[23:59] <jonsowman> it's an interesting question that
[23:59] <jonsowman> black will radiate more too
[00:00] --- Thu Nov 24 2011