highaltitude.log.20100712

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[02:46] <SpeedEvil> http://www.poseidon.com/products/discovery-mkvi - neat.
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[02:46] <SpeedEvil> Though not especially related
[02:46] <SpeedEvil> Compact rebreather aparatus.
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[07:10] <jonsowman> if anyone knows who submitted a landing site save request yesterday for Latitude: 54.6903/Longitude: -5.9342
[07:10] <jonsowman> let me know - they didn't give me a site name
[07:48] <fsphil> ooh, someone else from NI thinking of launching? it's an oddly residential area to do it though :)
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[14:11] <rharrison> lithiums 3.99 at sainsburys
[14:12] <jonsowman_work> rharrison: nice
[14:12] <jonsowman_work> bargain
[14:12] <rharrison> Yep not bad just got 10x4 AA
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[14:20] <jonsowman_work> any issues with going for really high ascent rates?
[14:20] <jonsowman_work> weather is touch and go - thinking of maybe 6m/s to avoid the sea
[14:21] <jonsowman_work> been done before?
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[14:27] <rharrison> jonsowman, been done may tie
[14:27] <rharrison> time
[14:27] <rharrison> 6m is fine
[14:27] <rharrison> even 8m/s
[14:27] <rharrison> but you will be burst at 30-33k
[14:28] <rharrison> jonsowman_work, been done many times before
[14:29] <jonsowman_work> i don't mind sacrificing burst altitude
[14:29] <jonsowman_work> it's a 1500g balloon
[14:29] <jonsowman_work> might have to be 8m/s
[14:33] <rharrison> jonsowman, what day are you planning to launch on?
[14:34] <rharrison> jonsowman_work,
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[14:51] <m1x10> hi mates :)
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[14:54] <earthshine> hi all
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[15:29] <jonsowman_work> rjharrison: saturday
[15:29] <jonsowman_work> this coming saturday - 17th
[15:29] <jonsowman_work> rharrison:
[15:29] <rharrison> ok cool
[15:30] <rharrison> I'll be watching / tracking from france :)
[15:30] <jonsowman_work> excellent :)
[15:30] <jonsowman_work> that'd be great
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[15:50] <fsphil> where are you launching from?
[15:51] <fsphil> ah, cambridge. found it on the wiki.
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[15:53] <jonsowman_work> fsphil: yup :)
[15:54] <jonsowman_work> aiming for a 1000BST launch
[15:55] Action: g8tmv won't be around to track - have a wedding to go to (as does m6lep)
[15:55] <jonsowman_work> g8tmv: no worries :)
[15:56] <fsphil> I need to see if I can talk someone into driving me up the hill, want to try the yagi this time
[15:56] <jonsowman_work> fsphil: that'd be great :)
[15:56] <jonsowman_work> will send out a launch notification during the week
[15:56] <fsphil> are you still going to be alternating the baud rate?
[15:56] <jonsowman_work> indeed
[15:57] <jonsowman_work> 300 baud followed by 50 baud
[15:57] <g8tmv> why?
[15:57] <jonsowman_work> then roughly 20seconds of radio silence during which time the payload listens for uplink
[15:57] <fsphil> ooooh uplink?
[15:57] <jonsowman_work> g8tmv: we want to try it :)
[15:57] <jonsowman_work> fsphil: yes
[15:57] <jonsowman_work> controlled cutdown and we can turn the ionising radiation detection systems on and off
[15:58] <jonsowman_work> we are concerned that they are going to cause EMI
[15:58] <g8tmv> won't it confuse dl-fldigi? it will probably miss the start of the string, then lock but get the wrong checksum
[15:58] <jonsowman_work> so we can turn them off from the ground if they do
[15:58] <fsphil> I know 300 baud works fine up to about 50km, I used it on my own flight
[15:58] <jonsowman_work> g8tmv: been tested thoroughly! fldigi just cannot decode the "wrong baud" packet, and ignores it
[15:59] <jonsowman_work> it will just decode the one that matches the baud it is set to
[15:59] <fsphil> g8tmv, there's normally a gap between the strings anyway
[15:59] <g8tmv> Ah, ok
[15:59] <jonsowman_work> yup, 5 second gap
[15:59] <fsphil> it's essentially an extended stop bit
[16:00] <fsphil> I'm going to be running two copies, one at each baud. should work. maybe :)
[16:00] <jonsowman_work> fsphil: that'd be great
[16:00] <jonsowman_work> will be really interesting to see how they compare side by sie
[16:00] <jonsowman_work> *side
[16:00] <g8tmv> can two copies of an app share the sound hardware?
[16:01] <fsphil> g8tmv, depends on the OS -- I think anything recent can share the sound device
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[16:03] <jonsowman_work> http://www.hexoc.com/pages/apex/apex-ii.php
[16:03] <jonsowman_work> if anyone is interested
[16:06] <Matt_soton> a sample packet: http://users.ecs.soton.ac.uk/mfb2g09/packet.mp3
[16:06] <jonsowman_work> Matt_soton: thanks :)
[16:06] <fsphil> oooh I love the way you've done the resistors for the ntx2
[16:07] <jonsowman_work> fsphil: Matt_soton's work - not mine
[16:07] <Matt_soton> we couldnt use two pins with hardware serial output
[16:08] <jonsowman_work> fsphil: you could maybe test simultaneous decode with that sample packet?
[16:08] <fsphil> it's a good solution. I've been using two resistors, one to the TX pin and one to the +3.3v
[16:08] <fsphil> will do, one sec
[16:09] <jonsowman_work> :)
[16:09] <Matt_soton> well whatever works :)
[16:09] <fsphil> mine works but the resistor to 3.3v is very sensitive, even slight changes to the resistance have a pretty big effect on the shift
[16:11] <Matt_soton> well im not too sure how sensitive mine is to temperatre changes
[16:11] <jonsowman_work> happily new dl-fldigi has custom shift
[16:11] <Matt_soton> yea
[16:11] <jonsowman_work> also we're starting at 425 shift
[16:11] <Matt_soton> i noticed the payload the other day drifted shift
[16:11] <jonsowman_work> interesting
[16:11] <jonsowman_work> why?
[16:12] <jonsowman_work> or don't know?
[16:12] <fsphil> both packets decoded perfectly .. I forgot to offline the second dl-fldigi so it's been uploaded
[16:12] <jonsowman_work> fsphil: fantastic
[16:12] <Matt_soton> well reistor values change with temperature
[16:13] <jonsowman_work> must speak to alexei about getting the tracker to display all those hex sensor values
[16:13] <fsphil> I find my frequencies bounce about a bit when the camera switches on and off -- voltage drop I think
[16:13] <fsphil> bare_bear?
[16:13] <jonsowman_work> :\
[16:13] <jonsowman_work> that's a new one
[16:14] <jonsowman_work> http://hexoc.com/hab/predict/predict/#!/uuid=2779157a2648c92e830df001643f7408eab21ee2
[16:14] <jonsowman_work> please stay like that...
[16:14] Action: jonsowman_work crosses fingers
[16:15] <Matt_soton> has it changed since this morning
[16:15] <jonsowman_work> yes
[16:15] <jonsowman_work> changed at midday with the new GFS data
[16:15] <jonsowman_work> it was further south at a range of ~100km this morning
[16:16] <Matt_soton> its the same since i last saw it tho
[16:16] <jonsowman_work> yeh
[16:16] <jonsowman_work> probably is
[16:19] <m1x10> jonsowman good work, hope the best :)
[16:19] <fsphil> be great if this weather hold until the end of the month :)
[16:19] <jonsowman_work> m1x10: thank you!
[16:20] <m1x10> Im interested in the GSM module
[16:20] <m1x10> did you find a suitable modem?
[16:20] <m1x10> I mean phone
[16:22] <jonsowman_work> we're using a Nokia 6120
[16:22] <jonsowman_work> bog standard UART with AT commands
[16:22] <jonsowman_work> cheaper than a dedicated GSM module
[16:23] <jonsowman_work> sorry 6210
[16:24] <m1x10> :)
[16:24] <jonsowman_work> no not that either
[16:24] <fsphil> 6110?
[16:25] <m1x10> well ? :P
[16:25] <jonsowman_work> ah it is a 6210
[16:26] <jonsowman_work> but not the navigator version
[16:26] <jonsowman_work> ie. it's this one:
[16:26] <jonsowman_work> http://www.all4mobiles.com/photo/nokia%206210.jpg
[16:26] <m1x10> the navigator edition is expensive
[16:26] <jonsowman_work> yeh - it's not that one
[16:27] <jonsowman_work> it's the normal 6210
[16:27] <m1x10> so you use an external GPS
[16:27] <m1x10> the lanssen one?
[16:27] <jonsowman_work> lassen iQ
[16:27] <jonsowman_work> yes
[16:28] <jonsowman_work> http://balloon.hexoc.com/gallery/apex-ii/index.php/Apex-II-PCBs/IMG_0685
[16:28] <jonsowman_work> payload :)
[16:28] <m1x10> radiometrix is everywhere !
[16:28] <jonsowman_work> educational discounts :)
[16:28] <m1x10> :):)
[16:28] <fsphil> I wish my pcb's turned out even half that nice ;-)
[16:28] <jonsowman_work> also, it's good reliable kit
[16:29] <m1x10> two days ago my GSM module from sparkfun got burned without any obvious reason :(
[16:29] <m1x10> 80 eyros :(
[16:30] <jonsowman_work> m1x10: oh dear
[16:30] <m1x10> now im looking fom some other solution :(
[16:30] <fsphil> second hand nokia?
[16:30] <m1x10> who knows..
[16:31] <m1x10> when I put the GSM module on its shield it gets extremely hot in 10 secs
[16:31] <m1x10> dont know if its the shield's problem or the module itself
[16:32] <m1x10> its this: http://www.sparkfun.com/commerce/product_info.php?products_id=9607
[16:33] <fsphil> things can get hot if wired incorrectly, or plugged in backwards (that poor avr chip :))
[16:33] <m1x10> I had it stacked on an arduino and above the GSM was a GPS module
[16:33] <jonsowman_work> right - off home
[16:34] <jonsowman_work> catch you all later
[16:34] <fsphil> laters
[16:34] <m1x10> nothing happened to the GPS and arduino
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[16:34] <m1x10> just the GSM
[16:35] <m1x10> which was in the between arduino and GPS
[16:35] <fsphil> perhaps the shield is pushing against something, shorting it out?
[16:36] <m1x10> maybe bad soldering of the pins?
[16:36] <m1x10> but already used it for a couple of days
[16:36] <m1x10> 3rd day just got hot and from then it cant respond
[16:41] <fsphil> have you asked sparkfun about it? they might be able to suggest something
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[16:44] <m1x10> no, I haven't.
[16:44] <m1x10> what to ask them?!?! I don't think they can help with that.
[16:46] <fsphil> they designed the board, so should be able to say what would cause it to fail that way
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[18:18] <m1x10> Lunar_Lander :)
[18:18] <Lunar_Lander> hello :)
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[18:19] <Lunar_Lander> how's life?
[18:19] <m1x10> good and bad :)
[18:19] <m1x10> how's life in lunar ? :p
[18:21] <Lunar_Lander> well
[18:21] <Lunar_Lander> I'm fine
[18:22] <Lunar_Lander> just had to read some shit about "Aliens take people and that is why"
[18:22] <Lunar_Lander> xD
[18:22] <m1x10> :p
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[18:47] <jonsowman> you turned the payload off?
[18:47] <jonsowman> sorry wrong window
[18:48] <Lunar_Lander> hi jonsowman
[18:48] <jonsowman> Lunar_Lander: hello :)
[18:48] <Lunar_Lander> :)
[18:48] <jonsowman> hows things
[18:50] <Lunar_Lander> quite ok and you?
[18:51] <jonsowman> yeh fine thanks :)
[18:52] <Lunar_Lander> cool :)
[18:52] <Lunar_Lander> just read some alien abduction shit xD
[18:54] <jonsowman> nice
[18:56] <Lunar_Lander> yeah
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[18:56] <Lunar_Lander> a list of "events" that happen if such an event is imminent
[19:01] <m1x10> Lunar_Lander do u believe in aliens? :P
[19:01] <Lunar_Lander> nope
[19:01] <Lunar_Lander> and you?
[19:02] <m1x10> why not
[19:02] <m1x10> its cool
[19:02] <m1x10> :)
[19:02] <Lunar_Lander> yeah wait
[19:02] <Lunar_Lander> I don't believe they were here
[19:02] <m1x10> ahh
[19:02] <m1x10> ok
[19:02] <m1x10> me too
[19:02] <Lunar_Lander> the potential that there are "people" on other planets is high
[19:02] <Lunar_Lander> :)
[19:03] <Lunar_Lander> if they made a 1/2 c drive
[19:03] <Lunar_Lander> and if they'd live on Alpha Centauri
[19:04] <Lunar_Lander> they'd fly 16 years from there to here and back
[19:04] <Lunar_Lander> that's crazy
[19:04] <Lunar_Lander> and only for the purpose of snatching some guy and making some experiments and fly home in the morning?
[19:04] <m1x10> but they could have some pills that make them live for many years :)
[19:05] <Lunar_Lander> yeah but if their ship fails, they're f****
[19:05] <m1x10> no, we assume they have supernatural exotic technology
[19:05] <m1x10> error-free
[19:05] <m1x10> :)
[19:05] <m1x10> no rockets and balloons..
[19:06] <m1x10> just antigravity stuff
[19:06] <Lunar_Lander> yeah
[19:06] <m1x10> but
[19:06] <m1x10> this planet is long enough
[19:06] <m1x10> i cant believe that only the last 6 or 7000 years
[19:06] <m1x10> humanity existed
[19:07] <Lunar_Lander> yeah modern humans
[19:07] <Lunar_Lander> our "prototypes" kind of came up 2 million years ago
[19:07] <m1x10> maybe some 100.000 or 1.000.000 years ago someone paid a visit here
[19:07] <Lunar_Lander> yeah
[19:07] <m1x10> the planet was nice that days
[19:07] <Lunar_Lander> I think the universe has been there for 15 billion years
[19:08] <m1x10> no concrete and stuff
[19:08] <Lunar_Lander> Earth is just 4.5 billion years old
[19:08] <Lunar_Lander> yeah true
[19:08] <m1x10> yeah
[19:08] <m1x10> and it had water oxygen and trees for millions of years
[19:08] <m1x10> so
[19:08] <m1x10> ..
[19:09] <m1x10> maybe we are their sperms :)
[19:09] <Lunar_Lander> yeah maybe
[19:09] <m1x10> and we became compatible to this planets environment
[19:09] <m1x10> evolution...
[19:10] <m1x10> I cant believe that life was born here
[19:10] natrium42 (~natrium@CPE000625d867e2-CM0014045885be.cpe.net.cable.rogers.com) joined #highaltitude.
[19:10] <Lunar_Lander> yeah
[19:11] <Lunar_Lander> we must try to find the origins of life
[19:11] <m1x10> haa
[19:11] <m1x10> haha
[19:11] <m1x10> "it's out there"
[19:11] <m1x10> :P
[19:12] <Lunar_Lander> xD
[19:13] <m1x10> so, what is god for u?
[19:13] <Hiena> Lunar_Lander, from my personal experience, rather not disturb the anchestors, deeper you digs more ugly things got unearthed.
[19:14] <Hiena> Ya' know, slimy secrets, left hand cousins and so on. ;)
[19:14] <Lunar_Lander> xD yeah
[19:16] <Hiena> Also, the creatonist is never thought, what is the god is just an omnipotent, bored kid, whom wanted an galaxy scale ant farm?
[19:17] LazyLeopard (~irc-clien@chocky.demon.co.uk) joined #highaltitude.
[19:17] <Hiena> And we never could be sure, when he invents the magnifying glass, just for fun.
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[19:25] <Lunar_Lander> yeah
[19:26] <m1x10> I believe in HAB :)
[19:26] <Lunar_Lander> xD
[19:29] <Lunar_Lander> btw
[19:29] <Lunar_Lander> http://www.abduction.de/blog/?p=275
[19:29] <Lunar_Lander> on the second drawing you can see: The Shithead!"
[19:29] <Lunar_Lander> xD
[19:31] <m1x10> ahahah
[19:34] <Lunar_Lander> :D
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[20:30] <rjharrison> ping natrium42
[20:30] Last message repeated 1 time(s).
[20:30] <rjharrison> opps
[20:31] <rjharrison> natrium42 did you fix the date UTC thing last night :)
[20:31] <natrium42> yep :)
[20:32] <jnd> Lunar_Lander: do you believe we live in some kind of simulation?
[20:32] <Lunar_Lander> hard to say
[20:33] <Lunar_Lander> there is nothing that could prove or falsify it
[20:33] <Randomskk> well there are ways to prove it
[20:33] <natrium42> rjharrison, are the ":" necessary in the transmission?
[20:33] <Randomskk> e.g., resolution limits
[20:33] <natrium42> might save a few chars
[20:34] <Lunar_Lander> yeah true
[20:34] <natrium42> actually only minutes and seconds are necessary as server has hours and date
[20:35] <Randomskk> personally I'd at the least keep hours
[20:36] <Hiena> Hmmm... Anybody knows GSM modul manufacturers?
[20:37] <Hiena> It would be nice a really cheap, quad-band module.
[20:37] <SpeedEvil> farnell have some.
[20:37] <SpeedEvil> As do ebay
[20:37] <Lunar_Lander> "In 1979, James S. McDonnell, board chairman of McDonnell Douglas and believer in the paranormal, awarded a USD $500,000 grant to Washington University in St. Louis, Missouri, for the establishment of the McDonnell Laboratory for Psychical Research. "
[20:38] <rjharrison> natrium42 no they aren't
[20:39] <rjharrison> the :
[20:39] <rjharrison> But it makes it so much easier to read
[20:39] <natrium42> fair enough
[20:39] <rjharrison> Esp if you are not using the tracker
[20:40] <rjharrison> jcoxon is going to fix his code :)
[20:41] <rjharrison> Sold my space Icarus III board for 310 pounds :)
[20:41] <rjharrison> spare
[20:41] <natrium42> haha, cool
[20:41] <natrium42> to be launched?
[20:41] <rjharrison> It's is loaded with GPS TX and 2 temp sensors
[20:42] <rjharrison> but still made a few pennys
[20:42] <SpeedEvil> Sometimes, you want to just set people on fire.
[20:42] <SpeedEvil> http://science.slashdot.org/story/10/07/12/1852210/Senators-Want-Big-Rocket-Instead-of-New-Tech-Commercial-Transportation
[20:42] <rjharrison> Some Uni wanted it for tracking a payload and they had been told it would cost 24 grand for the tracking kit
[20:42] <SpeedEvil> ;)
[20:43] <rjharrison> so mine was a bit cheaper at 307
[20:43] <natrium42> lol, 24k
[20:43] <rjharrison> That was for a radiosonde tracker apparently
[20:45] <rjharrison> I felt less bad when they told me that. I was wondering what I would do with the spare board i had
[20:45] <natrium42> everybody wins
[20:46] <rjharrison> natrium42 did you get my email about the xml file parsing for the Tracker
[20:46] <natrium42> yep
[20:46] jcoxon (~jcoxon@88-110-146-109.dynamic.dsl.as9105.com) joined #highaltitude.
[20:47] <rjharrison> hehe speak of the devil :)
[20:47] <natrium42> :)
[20:48] Action: jcoxon is not really here - just needs to get in contact with DanielRichman
[20:48] <rjharrison> He's not risen to the bait
[20:48] <jcoxon> :-p
[20:48] <rjharrison> haha
[20:49] <rjharrison> lol
[20:49] <Lunar_Lander> hey James and Robert :)
[20:49] <rjharrison> hi Lunar_Lander
[20:49] <rjharrison> Hows it going
[20:49] <sbasuita> jcoxon: he's on holiday in greece
[20:49] <sbasuita> jcoxon: you just missed him; went off to bed
[20:49] <Lunar_Lander> I'm fine and you?
[20:50] <jcoxon> sbasuita, hehe i was beginning to conclude he was away on holiday
[20:50] <jcoxon> okay, will do it myself then
[20:51] Action: jcoxon gets to work on a windows compilation of dl-fldigi
[20:51] <natrium42> O_O
[20:51] <natrium42> oh
[20:51] <rjharrison> blimy jcoxon is feeling brave or foolish tonight
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[20:53] <natrium42> jcoxon, btw i fixed the seq number reset scenario
[20:53] <jcoxon> rjharrison, i promosed i'd fix the bug in dl-fldigi before saturday
[20:53] <natrium42> it will look at difference
[20:53] <jcoxon> natrium42, takes the latest?
[20:55] <jcoxon> anyone want to lend me a powerful cpu to compile on
[20:56] <jcoxon> just needs to be running windows
[20:56] <jcoxon> oops running lunux
[20:56] <jcoxon> linux*
[20:56] <jcoxon> not windows
[20:57] <Randomskk> I have some cpu power
[20:57] <Randomskk> either my desktop which is a quad core thing or my server which is a more powerful quad core thing but with less dev things installed
[20:57] <jcoxon> Randomskk, only if you are happy with me doing hte build there
[20:58] <Randomskk> I can give you an account on the server readily, my desktop isn't set up for remote access atm
[20:58] <jcoxon> Randomskk, that would be great
[20:58] <jcoxon> that said
[20:58] <Randomskk> don't forget make -j4 ;o
[20:58] <jcoxon> might need to install some dev tools
[20:58] <Randomskk> if you give me a list I can install packages
[20:59] <jcoxon> Randomskk, eek looking at it - don't worry i'll do it on my box
[20:59] <jcoxon> it'll be slower but probably for the best
[20:59] <Randomskk> no problem, if you do want the server just give me a shout
[21:00] <jcoxon> thanks
[21:07] <g8tmv> jcoxon: I'm still having trouble getting it to find PORTAUDIO on my Debian/squeeze box. Does it need SNDFILE before it will see it?
[21:09] <jcoxon> g8tmv, to tell the truth i'm not sure
[21:09] <jcoxon> are you using alsa for your soundcard?
[21:09] <g8tmv> yes
[21:09] <rjharrison> g8tmv we just install the dev package like we're about to compile the binary
[21:10] <rjharrison> then everything is ready to go
[21:10] <g8tmv> done that
[21:10] <rjharrison> aaah
[21:10] <fsphil> anything interesting in config.log
[21:10] <fsphil> ?
[21:12] <g8tmv> Hmm.. is it trying to use portaudio19 or libportaudio2 or libportaudio0
[21:13] <jcoxon> thats a good point
[21:13] <fsphil> should be v2
[21:13] <fsphil> it's the only one I have installed
[21:13] <g8tmv> fsphil: I'm looking
[21:14] <jcoxon> g8tmv, on my ubuntu box i got it working using oss emulation (i know thats not your actual question)
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[21:15] <g8tmv> fsphil: is this significant:
[21:15] <g8tmv> conftest.c:28:28: error: ac_nonexistent.h: No such file or directory
[21:16] <jcoxon> g8tmv, just to confirm it is portaudio2
[21:16] <fsphil> g8tmv, don't think so - it's present here too
[21:16] <g8tmv> ok, I'll keep looking through the log
[21:18] <fsphil> g8tmv, can you run this please: pkg-config portaudio-2.0 --cflags --libs
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[21:25] <g8tmv> colin@zinfandel:~$ pkg-config portaudio-2.0 --cflags --libs
[21:25] <g8tmv> Package portaudio-2.0 was not found in the pkg-config search path.
[21:25] <g8tmv> Perhaps you should add the directory containing `portaudio-2.0.pc'
[21:25] <g8tmv> to the PKG_CONFIG_PATH environment variable
[21:25] <g8tmv> No package 'portaudio-2.0' found
[21:26] <g8tmv> but apt-get thinks that both libportaudio-dev and libportaudio2 are installed and up to date
[21:27] <fsphil> configure uses pkg-config to find the linker options, so that's the problem
[21:27] <g8tmv> and find / -name portaudio-2.0.pc doesn't find anything
[21:28] <fsphil> does deb have some way of searching for a file in a package? something like yum's provide command?
[21:29] <g8tmv> well find / -name "*portaudio*.pc*"
[21:29] <g8tmv> doesn't return anything, so it looks like the .pc file isn't there
[21:30] <fsphil> I mean search the repository, uninstalled packages
[21:31] <fsphil> ah, google to the rescue. the file portaudio-2.0.pc is definitely in portaudio19-dev
[21:31] <fsphil> http://packages.debian.org/hu/squeeze/i386/portaudio19-dev/filelist
[21:31] <g8tmv> Ah, but portaudio19-dev isn't installed because it conflicts with portaudio2
[21:32] <fsphil> aaah
[21:32] <fsphil> can you remove portaudio2? anything depend on it?
[21:32] <g8tmv> right let me switch versions - I'll see what depends first though
[21:33] <fsphil> hmm,, there is no portaudio2-dev
[21:33] <g8tmv> there is a libportaudio2-dev
[21:34] <g8tmv> anyway - I switched and am running configure again
[21:34] <g8tmv> ok, it found it - now to try a make
[21:34] <fsphil> yay
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[21:44] <g8tmv> ok, it built and it appears to run
[21:45] <g8tmv> let me try to find a data signal to decode
[21:47] <fsphil> there should be some sample captures about
[21:47] <fsphil> though I suppose if you can decode any rtty, then it's working :)
[21:55] <g8tmv> Hmm.. I've got what is obviously a data signal on 433.766 but it's not rtty
[22:03] <fsphil> continuous?
[22:04] <fsphil> to be honest I think we're the only people who do rtty on 70cm :)
[22:05] <g8tmv> well I'm looking for any data mode - psk31 is probably the most likely
[22:16] <fsphil> there's usually a fair bit of rtty on 10 metres
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[22:21] <russss> I can never get the right parameters to decode those
[22:23] <fsphil> it can be tricky
[22:23] <fsphil> one i never did manage to get was I think a text weather report
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[22:39] <jonsowman> natrium42: ping
[22:39] <natrium42> yo
[22:39] <jonsowman> $$APEX,788,21:38:38,5119.4912,-00012.2623,156,000,000,09,20.50,19.00,CD5,971,,,040403033,,24*D6AA
[22:40] <Randomskk> long telem is long
[22:40] <jonsowman> right so
[22:40] <jonsowman> its massive
[22:40] <jonsowman> haha yes
[22:40] <Randomskk> then again high baud is high
[22:40] <Randomskk> also missing drill hits are missing, see privmsg
[22:40] <jonsowman> oh yes, saw that
[22:40] <jonsowman> :(
[22:40] <Randomskk> :( dremel time
[22:40] <jonsowman> natrium42: how difficult or otherwise is getting the tracker to show all these sensor data?
[22:41] <natrium42> easy
[22:41] <jonsowman> the XML probably explains them all quite well
[22:41] <jonsowman> http://www.robertharrison.org/listen/apex.xml
[22:42] <jonsowman> the priorities are int_temp, ext_temp, pressure, batt volts, ird1, ird2 and rssi
[22:42] <jonsowman> the other few I'm not concerned about
[22:42] <jonsowman> temperatures and sats are just decimal
[22:42] <natrium42> ok
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[22:42] <jonsowman> pressure is a 12-bit ADC read transmitted as hex
[22:43] <jonsowman> so three hex chars
[22:43] <jonsowman> same goes for batt.volts
[22:43] <natrium42> so tracker should just convert it to decimal, or is there some formula too?
[22:43] <jonsowman> there is a linear conversion factor
[22:43] <jonsowman> for pressure
[22:45] <jonsowman> batt_volts = 5*(adc/4096)
[22:45] <Matt_soton> *2
[22:46] <Randomskk> so adc/409 ? :P
[22:46] <jonsowman> oh sorry
[22:46] <Randomskk> or is that adc/2048
[22:46] <jonsowman> IRDs are transmitted as hex, just convert to decimal and display
[22:47] <Matt_soton> well shouldnt it be bv = 10*(adc/4095)
[22:47] <jonsowman> Matt_soton: how do we want rssi displayed?
[22:47] <Randomskk> needle on a dial of course
[22:47] <jonsowman> Randomskk: haha
[22:48] <Matt_soton> well could be db
[22:48] <jonsowman> on another note - i wasn't around earlier, did james get anywhere with that fldigi bug?
[22:48] <Randomskk> http://code.google.com/apis/chart/docs/gallery/googleometer_chart.html
[22:48] <Randomskk> http://chart.apis.google.com/chart?chs=200x125&cht=gom&chd=t:70&chco=FF0000,FF8040,FFFF00,00FF00,00FFFF,0000FF,800080&chxt=x,y&chxl=0:|Groovy|1:|slow|faster|crazy
[22:51] <jonsowman> natrium42: is there anything else you need to know?
[22:52] <jonsowman> i realise some of the fields in the telemetry are currently blank, but the order is given by the XML and won't be changing
[22:54] <jonsowman> sorry I really must go, thank you natrium42 for doing this
[22:54] <jonsowman> ask Matt_soton if there's anything you need to know
[22:54] <jonsowman> night all
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[23:44] <Laurenceb> hi
[23:45] <m1x10> yo :)
[23:46] <fsphil|t60> evenin'
[23:46] <SpeedEvil> hi
[23:48] Action: Laurenceb is reading http://en.wikipedia.org/wiki/Launch_loop
[23:49] <SpeedEvil> yeah
[23:50] <SpeedEvil> interesting, but requires a large heap of magic
[23:51] <SpeedEvil> Fundamentally, an orbital beanstalk only requires a small amount of magic.
[23:51] Action: Laurenceb prefers single stage to MXER rotovator
[23:52] <Laurenceb> "momentum exchange electrodynamic reboost"
[23:52] <SpeedEvil> In that it just requires someone to realise that you need to start with organic honey in duterium atmosphere as a precursor to make inexpensive single-wall nanotubes of good strength ratio.
[23:53] <Laurenceb> reusable single stage lox/kerosene rocket with annular aerospike launching up to a rotovator
[23:53] <SpeedEvil> It doesn't even need to be _that_ cheap - Done right - the tether can be a modest number of times - 30-40* the payload mass
[23:53] <Laurenceb> then you use solar power to raise the tether orbit afterwards
[23:54] <SpeedEvil> You want to get to the point - for a beanstalk - that you can bootstrap it to continually double the width for a bit
[23:54] <Laurenceb> nice thing about tethers is you can release after a 180 degree rotation and get escape velocity
[23:54] <SpeedEvil> Smaller tethers are interesting too
[23:54] <Laurenceb> its an interesting topic but only rotovators are feasible at the moment it seems
[23:55] <Laurenceb> you can get 4Km/s with spectra-2000 which is avaliable and cheapish
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[23:58] <russss> spectra is crazy stuff
[23:58] <SpeedEvil> http://science.slashdot.org/story/10/07/12/1852210/Senators-Want-Big-Rocket-Instead-of-New-Tech-Commercial-Transportation
[23:58] <SpeedEvil> Made me so pissed off
[23:59] <SpeedEvil> I was looking on ebay, and there is actually really decent fibre available.
[23:59] <SpeedEvil> I was wondering how far you could lift a few kilo breaking strain thread
[23:59] <russss> I was sailing this weekend with a guy who does high-end yacht racing, he was saying that most of the ropes on the big racing yachts are made from spectra. Costs something like £50/metre, and you can't tie knots in it because it halves the tensile strength
[00:00] --- Tue Jul 13 2010