highaltitude.log.20100520

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[00:35] <Randomskk> damn, just missed rjharrison
[00:36] <Randomskk> oh well, sleep
[00:40] <Randomskk> got the hourly predictor multithreaded for simultaneous runs
[00:40] <Randomskk> way faster
[00:40] <Randomskk> anyway will give him the code later
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[07:47] <jcoxon> morning edmoore
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[08:54] <jcoxon> DanielRichman, i've made a change to the maximise on start up for dl-fldigi
[08:54] <jcoxon> i think it should solve everything being squashed initially
[08:55] <jcoxon> though could you check it works okay on non-OSX
[08:56] <DanielRichman> jcoxon, will pull and build
[08:57] <jcoxon> basically it just sets the inital width to the screen width
[08:58] <jcoxon> and now gets the proper height rather then a set number
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[09:03] <DanielRichman> jcoxon, am building both linux & windows copies
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[09:08] <DanielRichman> jcoxon, bad news on the linux front: http://imagebin.org/97620
[09:10] <jcoxon> what happens if you open and close it again?
[09:11] <jcoxon> and if you maximise the window
[09:11] <DanielRichman> jcoxon, oh fixed
[09:11] <DanielRichman> jcoxon, i closed and reran src/dl-fldigi --hab
[09:11] <DanielRichman> and now it's fine
[09:12] <DanielRichman> jcoxon, if I maximise the window it breaks the interface but unmaximising fixes it again
[09:12] <jcoxon> hmmmm
[09:12] <jcoxon> still not solved
[09:12] <jcoxon> cause now it works well for me
[09:12] <jcoxon> i should really build a linux test bed
[09:13] <jcoxon> before hand did it work just fine?
[09:13] <jcoxon> before i made the changes?
[09:18] <DanielRichman> jcoxon, can't be sure; but I think so
[09:18] <DanielRichman> need to test fully
[09:18] <jcoxon> perhaps the changes need to an apple only thing then
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[09:29] <jcoxon> hey GW8RAK, hows teh project going?
[09:30] <GW8RAK> Morning jcoxon. Making progress. I've had a few problems reading the GPS as it outputs variable length fields, but that is now solved.
[09:30] <GW8RAK> Can create the output data packet and will start working on formatting the RTTY output this weekend.
[09:30] <jcoxon> cool
[09:30] <GW8RAK> The best news is that a pilot friend of mine will take it to work and test it.
[09:31] <jcoxon> going to follow the ukhas standard? or develop something new?
[09:31] <GW8RAK> So I'll log the output and make sure everything is working.
[09:31] <jcoxon> GW8RAK, great idea, nothing better then a stress test for it
[09:31] <GW8RAK> I'm working to ukhas standard so it can be decoded by dl-fldigi
[09:31] <jcoxon> great
[09:32] <jcoxon> more people can listen in :-D
[09:32] <GW8RAK> But inteleaved with the ukhas strings, will be text strings so that air cadet listeners can directly read it.
[09:32] <jcoxon> thats a good idea
[09:32] <jcoxon> if you leave out the start $$ dl-fldigi will completely ignore that string
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[09:32] <GW8RAK> They will then radio their reception reports back to mission control. Not essential, but it gets more people involved
[09:33] <GW8RAK> Good point about the $$.
[09:33] <jcoxon> thats good practice as well
[09:33] <jcoxon> sounds fun - wish i did this when i was younger
[09:33] <GW8RAK> I'm starting to promote it within the air cadet organisationa nd everyone is really positive. So I think we could have a new crowd of listeners.
[09:34] <GW8RAK> And I'm sure other squadrons will want to fly their own balloons.
[09:34] <jcoxon> sounds great
[09:34] <jcoxon> did you get any where with chatting with MOD about being allowed to do more as you are air cadets?
[09:35] <GW8RAK> Today's job is to contact the CAA about a local launching site here in North Wales. If we can launch locally and the balloon stays more or less within Wales, there shouldn't be too many restrictions.
[09:35] <jcoxon> hehe apparently the ash cloud is causing the CAA stress
[09:35] <jcoxon> might be worth holding off for a week
[09:35] <jcoxon> as i suspect they'll just put it on hold
[09:36] <GW8RAK> I'm still talking to MOD. For a packet digipeater system, we'd need about 150mW or for a synthesised voice downlink, we'd need 250mW.
[09:36] <GW8RAK> But if we could get an HF downlink, that would be fun.
[09:37] <jcoxon> hehe, not going to happen with a uk amateur radio licence :-D
[09:37] <GW8RAK> Good thoughts about not pestering the CAA at present.
[09:37] <jcoxon> well i know that rjharrison has been chatting with them for a new launch site inhte north
[09:37] <jcoxon> but they seem rather overwhelmed
[09:37] <jcoxon> so they just put him on hold
[09:38] <GW8RAK> If flying radios were permitted under the amateur licence, I know someone would want to run 400W just for fun.
[09:38] <jcoxon> hehe
[09:38] <jcoxon> i really like 10mW
[09:38] <GW8RAK> I'm quite impressed with what it can achieve.
[09:38] <jcoxon> i like the simplicity and unobtrusiveness
[09:38] <GW8RAK> And, yes, it's simplicity
[09:38] <jcoxon> people really can't complain as you just say its 10mW!
[09:39] <GW8RAK> I'm thinking about a future launch with an RTTY repeater on board. VHF uplink, decode, serial data out, into the Picaxe chip and then back down again.
[09:39] <jcoxon> yeah that would be really fun
[09:40] <GW8RAK> No error correction, but it's a start.
[09:40] <jcoxon> well perhaps checksum -that bit is easy
[09:40] <jcoxon> as it'll stop noise
[09:40] <jcoxon> but then i guess you'll lose perfectly good sentences
[09:40] <jcoxon> something to explore at least
[09:41] <GW8RAK> If signals were good, a simple form of ARQ would be possible.
[09:41] <jcoxon> GW8RAK, this summer a few balloons might be coming your way
[09:41] <jcoxon> as the JS will slightly reverse so we sometimes find winds push it west
[09:42] <GW8RAK> In recent launches I've monitored, I've noticed that for my location, about 250km from EARS, signals drop down into the noise at altitude 20 to 22km. Personally I'd like to investigate this propagation.
[09:42] <jcoxon> thats interesting
[09:43] <GW8RAK> A westward drift would be good. I've got a couple of people over here or in the South West, who without a good location like mine (top of 250m hill), have yet to hear anything.
[09:43] <jcoxon> there must be something going on as fsphill is far to far away to be in horizon
[09:43] <jcoxon> yes still gets it at the top
[09:44] <GW8RAK> I noticed at the weekend, that as my signals were decreasing, he was still reporting good signal strength
[09:45] <GW8RAK> Have yet to source the stills digital camera, so am going to put out an appeal at work to see if someone has an old one sitting in a cupboard.
[09:45] <jcoxon> GW8RAK, i really recommend a powershot
[09:45] <jcoxon> as you can run chdk
[09:45] <GW8RAK> Once I've got that sorted, then it will be make the payload and then try to get sponsorship out of Airbus
[09:46] <GW8RAK> I've not looked into chdk much, but it may be a bit much for my programming skills or the Picaxe chip.
[09:46] <jcoxon> which is much better then hacking the shutter switch which always ends in tears in my experience (and pain from those flash capacitors)
[09:46] <jcoxon> GW8RAK, thats the key - its independent of the picaxe
[09:46] <jcoxon> so it'll run on its own
[09:46] <jcoxon> so you put the firmware on the sdcard and then just turn on the camera and it'll get to work following hte script
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[09:47] <GW8RAK> Of course, I remember that now. But it looked a bit daunting when I came across it recently.
[09:47] <jcoxon> hehe for a simple script its really not
[09:47] <jcoxon> well thats my recommendation
[09:47] <GW8RAK> When people say "simple", I wonder if it would be simple for me :)
[09:48] <GW8RAK> I'd still like to fit a phone or GSM module into the payload.
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[09:48] <jcoxon> yeah they are very useful
[09:49] <GW8RAK> If we come down in Wales, the topography may well mean that the minimum trackable altitude is quite high, so a mobile phone may well work down into the valleys.
[09:49] <jcoxon> there are number of options really
[09:50] <GW8RAK> Someone has hacked a Nokia 1610(?) with a picaxe chip, so it's already to go. They are cheap on ebay and all I'd need is the connector and cable.
[09:50] <jcoxon> you can interface with a mobile via serial (though take care as finding the right one is a challenge)
[09:50] <jcoxon> oh great - thats the hard part done
[09:50] <jcoxon> 6110 probs
[09:50] <GW8RAK> It sounds as if the earlier phones were easier.
[09:50] <jcoxon> yes
[09:51] <jcoxon> if you can use the mobile phone htats best
[09:51] <jcoxon> as it has its own powersupply etc
[09:52] <jcoxon> i've also used gsm modules such as the gm862
[09:52] <GW8RAK> Yes, Nokia 6100 and the code is available.
[09:52] <jcoxon> which are more raw but potentially a bit of a hassle
[09:53] <GW8RAK> Chembrow was pointing me towards modules based on the Siemens TC35i (?) module as he has experience of those.
[09:53] <GW8RAK> I'll start looking on ebay for a 6100, hopefully with a data cable.
[09:53] <jcoxon> http://ukhas.org.uk/guides:gsm_modules
[09:55] <jcoxon> t86i looks good
[09:56] Action: juxta|console is going to buy a balloon chasing car this weekend ;D
[09:56] <GW8RAK> Just a bit puzzled by the phrase " difficult to hack" and " achieved success with this phone". Sounds contradictory
[09:56] <jcoxon> hehe, mobile phones are a little bit of challenge
[09:56] <jcoxon> i think the issue is that people use different ones everytime
[09:56] <jcoxon> so we haven't got a consensus on whats best
[09:56] <GW8RAK> And the manufacturers vary the interface specs. without telling anyone.
[09:57] <jcoxon> apparently all siemens phones expose seiral and respond to at commands
[09:58] <juxta|console> i have a few old SE phones i'd like to have a shot at hacking up to work
[09:58] <juxta|console> will have to see if they have a uart
[09:58] <jcoxon> something like this would be perfect: http://cgi.ebay.co.uk/SIEMENS-S55-GSM-PHONE-/290434980252?cmd=ViewItem&pt=UK_MobilePhones_MobilePhones&hash=item439f46199c
[09:58] <DanielRichman> logger/rx_extract.cxx:53:62: error: termios.h: No such file or directory
[09:59] <jcoxon> maynot actually be needed
[09:59] <jcoxon> i borrowed the code off steve
[09:59] <GW8RAK> Oh bugger. Work is calling. Thanks for the chat jcoxon, it's good to talk it over sometimes. back later.
[10:00] <DanielRichman> c249819a (James Coxon 2010-05-17 17:34:13 +0100 53) #include <termios.h> /* POSIX terminal control definitions */
[10:00] <jcoxon> GW8RAK, np
[10:00] <jcoxon> DanielRichman, yeah yeah
[10:00] <DanielRichman> jcoxon, will remove it and see if it compiles
[10:00] <GW8RAK> It's really annoying when work gets in the way of important things :)
[10:00] <jcoxon> i know i commited it - i'm saying that i bulk copied it
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[10:04] <DanielRichman> whoops.
[10:07] <DanielRichman> jcoxon, yes it builds now without terminos.h; can you pull and test that nothing OSX is borken?
[10:09] <jcoxon> all good
[10:11] <DanielRichman> jcoxon, OK. Setting it compiling and going afk; will be back in a bit to upload results
[10:12] <jcoxon> okay, not sure what to do about the resizing issue
[10:12] <jcoxon> can sort it out later
[10:28] <DanielRichman> jcoxon, http://github.com/danielrichman/dl-fldigi-windows-build/downloads
[10:28] <DanielRichman> bbl
[10:29] <jcoxon> good work
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[14:35] Action: jcoxon has a npower home energy monitor - could get quite obsessive trying to get the numbers as low as possible
[14:37] <edmoore> jcoxon: got cards
[14:37] <edmoore> ta!
[14:37] <jcoxon> no probs, quite pleased in how they turned out
[14:37] <juxta|console> jcoxon: is that the kind that connects in the switchboard and gives you an overall figure for your whole house?
[14:38] <jcoxon> yeah
[14:38] <juxta|console> nifty
[14:38] <jcoxon> it has a sensor that clips round one of the wires out of the meter and then its a 868mhz transmitter to a display
[14:39] <jcoxon> currently at 0.180kW
[14:39] <juxta|console> HAL effect sensor I guess?
[14:39] <juxta|console> wow, 180w for the whole house? that's pretty good - did you switch everything off?
[14:39] <jcoxon> maybe :-P
[14:39] <jcoxon> its a little dark in here now
[14:39] <juxta|console> haha
[14:40] <edmoore> i think i'd get pretty obsessed about lowering power if I had one of those too
[14:40] <jcoxon> quite a few things on standby though such as my tv and xbox360
[14:40] <jcoxon> haven't got that obsessed
[14:40] <jcoxon> its an excellent idea as it can also give you the cost per hr
[14:41] <juxta|console> I've got a little one that does a single socket
[14:41] <juxta|console> and does cost too - but whole house is great
[14:41] <juxta|console> one state here gave them out for free as a green incentive
[14:41] <juxta|console> not the state where I live though :(
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[14:51] <jcoxon> bbl
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[16:24] <rharrison> ping DanielRichman
[16:25] <rharrison> Can our threads post data back to the parent?
[16:26] <DanielRichman> rharrison, yeah, what were you thinking of?
[16:26] <rharrison> GPS read
[16:26] <DanielRichman> certainly
[16:26] <rharrison> I don't want the code waiting for data to come back from the serial port whist RX is comming in
[16:26] <DanielRichman> rharrison, you can define a THREAD_ID in threads.h for something like DL_GPS_THREAD
[16:27] <DanielRichman> then having created the thread you can SET_THREADID to DL_GPS_THREAD
[16:27] <DanielRichman> then you can use the REQ() function from qrunner.h to safely post data back to the UI
[16:27] <rharrison> cool
[16:28] <rharrison> Can I get it working and then get you to do the magic there
[16:28] <rharrison> It should be rather straight forward once I have the reading working fine
[16:29] <rharrison> The client should also post to the tracker the case car info if you're a chase car
[16:29] <rharrison> We'll talk about that later :)
[16:36] Nick change: dave__ -> stilldavid
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[16:43] <stilldavid> so that was about the most fun I've had, ever.
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[16:50] <GW8RAK> A cryptic comment stilldavid. What have you been up to?
[16:51] <stilldavid> well, I went ahead and launched yesterday :)
[16:51] <GW8RAK> Excellent. Did all go according to plan?
[16:51] <stilldavid> well, long story :) but all in all, payload was recovered and got some amazing photos and HD video
[16:52] <GW8RAK> That is what counts.
[16:52] <stilldavid> tracking was great, but the altitude reading from the GPS would only update every ~15 minutes, so it was essentially impossible to read how fast it was rising or when it was returning
[16:52] <DanielRichman> stilldavid, congratulations
[16:52] <GW8RAK> Any ideas why?
[16:53] <stilldavid> and the radio stopped transmitting upon impact, so it was a bit of a wild goose chase to find it, but luck was on our side and we got it back
[16:53] <stilldavid> no idea, still have to do the post-mortem.
[16:53] <edmoore> where are you based stilldavid ?
[16:53] <stilldavid> DanielRichman, thanks :)
[16:53] <stilldavid> edmoore, Colorado, USA
[16:53] <edmoore> awesome. scenic landing spots then :)
[16:53] <stilldavid> yes, and did I mention the uh, storm?
[16:53] <GW8RAK> I thought you meant the town of Edmoore in Colorado. Doh!
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[16:54] <edmoore> :)
[16:54] <stilldavid> it was probably a terrible idea to go through with the launch, but by the time the clouds looked very menacing, the balloon was half full and we were several hours from home, so we went ahead
[16:55] <stilldavid> At any rate, processing photos and video now :)
[16:55] <stilldavid> I'm mostly bummed that I don't know what the max altitude was due to the GPS flaking out
[16:56] <stilldavid> The highest "good" reading was 25km, though, so it got at least that high!
[16:56] <GW8RAK> 15 minutes could result in a lot of altitude "lost"
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[16:56] <stilldavid> GW8RAK, I guess I'll just have to launch again :)
[16:57] <stilldavid> also: should definitely have listened to whoever said not to put a wooden dowel on the antenna to keep it straight. I think that was fsphil
[16:57] <GW8RAK> I'm trying to keep my payload simple, but am still attracted to logging data in case of transmit problems.
[16:57] <stilldavid> GW8RAK, at the risk of pushing SFE too much, I used an OpenLog and it worked like a charm!
[16:57] <stilldavid> what flight computer are you using?
[16:58] <GW8RAK> Excuse my ignorance, but most of your post flew over my head. I'm using a Picaxe chip which makes for simple programming by us non specialists.
[16:59] <GW8RAK> I always knew those hours programming Sinclair ZX81's back in the early '80's would come in use one day.
[16:59] <stilldavid> oh, no worries. I work at Sparkfun Electronics... we sell a little board that you can "just throw serial data" at
[16:59] <stilldavid> http://www.sparkfun.com/commerce/product_info.php?products_id=9530
[17:00] <stilldavid> if you can send a 9600 baud serial stream out of the Picaxe, you can log it to a uSD card
[17:00] <GW8RAK> Combining work and hobbies?
[17:00] <stilldavid> I started on the balloon before the job :P
[17:01] <GW8RAK> There's lot of interesting things for me to play with, but after 6 months research and work, I want to launch!
[17:01] <stilldavid> I feel your pain! I started over a year ago, but put the project on hold until about a month and a half ago.
[17:02] <stilldavid> the scope went from "I want 2.4Ghz, streaming video, etc..." to "I will be happy if it floats up and I never see it again"
[17:02] <DanielRichman> stilldavid, sfe employee? So we're going to see your project on the sfe homepage :P ?
[17:03] <edmoore> vim users: snipMate.vim it's a joy
[17:03] <stilldavid> DanielRichman, it's entirely possible :P
[17:03] <edmoore> ukhas discount?
[17:03] <edmoore> (joke... sort of)
[17:04] <stilldavid> DanielRichman, however... nate (the Big Boss around here) has been really interested in the project and is actually planning on doing a launch of his own in the next couple weeks
[17:04] <DanielRichman> :o
[17:04] <stilldavid> so I wouldn't be surprised if marketing waited for his "official" project
[17:04] <stilldavid> edmoore, I'll pitch the idea :)
[17:04] Action: DanielRichman installs snipMate
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[17:05] <stilldavid> moving from OS X to Ubuntu for dev, snipMate has saved my life :P
[17:05] <edmoore> stilldavid: I am in *precisely* that potition
[17:05] <edmoore> position*
[17:05] <GW8RAK> The Open Log board looks interesting and allows for multiple files. I have a use for that I think.
[17:05] <stilldavid> and NERDTree
[17:05] <edmoore> i get angry with myself when I think 'hrm, this might be easier in textmate'
[17:06] <edmoore> i use NERDtree too tho it's fugly as poo
[17:06] <stilldavid> well, most everything in vim is :P
[17:06] <edmoore> i think it can be beautiful
[17:07] <stilldavid> the VCS plugin is a lifesaver for git-blame, too
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[17:07] <stilldavid> edmoore, well, yeah, in a certain sense of the word...
[17:08] <edmoore> python with the wombat colorscheme, forex, is a very nice way to spend a few hours coding
[17:10] <stilldavid> ooh, wombat is pretty. unfortunately I'm stuck with PHP here, and it's not nearly as pretty as python
[17:11] <rharrison_> stilldavid, those data loggers are quite good I used a loggerv2 on one of my launches in 2008
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[17:12] <stilldavid> I used an Arduino Pro Mini (again, not trying to spam here...) and I like the OpenLog because it just sort of piggybacks on to it.
[17:12] <stilldavid> it's an incredibly small form factor for just about everything
[17:12] <edmoore> gosh, openlog is cute
[17:13] <edmoore> to think of all the anguish the logging on badger2 caused
[17:13] <edmoore> although actually the anguish went away when we decided to stop chasing 10+MBit writes
[17:14] <stilldavid> edmoore, what were you writing?
[17:14] <rharrison_> accerometer output ?
[17:14] <edmoore> sorry that was ambiguous - 10+MBit/s write speeds
[17:14] <edmoore> it has various high speed data
[17:15] <edmoore> was*
[17:15] <edmoore> inertial, gps phase, some other stuff
[17:15] <rharrison_> stilldavid, any pics up yet?
[17:16] <stilldavid> rharrison_, soon! I'm converting 20+ gigs of 1080p video at the moment
[17:16] <stilldavid> I suppose I could upload to flickr in the meantime...
[17:16] <rharrison_> hehe I'll take the stills :)
[17:16] <stilldavid> I dunno man, the video is ... breathtaking. Well, I might just be biased :P
[17:16] <sbasuita> stilldavid: what video camera did you use?
[17:16] <rharrison_> a small sample set of the best pics on flickr is cool
[17:17] <stilldavid> sbasuita, I used a GoPro HD1
[17:17] <rharrison_> stilldavid, it prob interferred with the GPS
[17:17] <stilldavid> it's got a 170* FOV and does 1080P
[17:17] <rharrison_> hence the probs
[17:17] <stilldavid> next payload I'm going to point it up and record at 60fps and get the balloon popping
[17:17] <rharrison_> We've had problems here in the uk with RFI
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[17:18] <stilldavid> rharrison_, the radio cut out when the antenna stick (dowel?) went through the payload on impact...
[17:18] <stilldavid> from what I can tell, the chute and balloon got tangled and it came down _hard_
[17:18] <rharrison_> stilldavid, you may want to shield the VCAM next time
[17:19] <rharrison_> You only got data every 15 mins was that the due to TX or GPS locak?
[17:19] <rharrison_> lock
[17:19] <edmoore> stilldavid: ouch. that's a bit of a payload murder
[17:19] <stilldavid> rharrison_, the lat/long updated and were sent beautifully
[17:19] <stilldavid> but the alt data didn't update for some reason.
[17:19] <rharrison_> Wy the 15 min breaks?
[17:19] <rharrison_> why
[17:20] <stilldavid> no idea :( will definitely debug before next launch, though
[17:20] <stilldavid> lots of little learning experiences yesterday...
[17:20] <edmoore> a day well spent then :)
[17:21] <rharrison_> stilldavid, consider RFI from the Vcam
[17:21] <stilldavid> rharrison_, what can I use to shield it?
[17:21] <rharrison_> stilldavid, was it working fine on the ground b4 launch
[17:21] <rharrison_> Aluminium foil linked to the RF gound?
[17:21] <stilldavid> yeah, I did a dry run with everything on a few days ago (only difference was battery type) and everything updated fine; although I wasn't changing elevation much
[17:21] <edmoore> you don't even need to link it to ground
[17:21] <rharrison_> edmoore, might have some suggestions
[17:22] <edmoore> just a sheet of foil in between will dissapate a lot of the RF through eddy currents
[17:22] <sbasuita> really looking forward to seeing the video footage
[17:22] <stilldavid> "Time remaining: about 2 hours"
[17:22] <sbasuita> :(
[17:22] <rharrison_> flickr
[17:23] <stilldavid> rharrison_, on it now...
[17:23] <rharrison_> supa dupa
[17:23] <edmoore> lol, you'll get no sympathy here stilldavid :) we start circling like vultures at the promise of flight pics and videos
[17:23] <rharrison_> edmoore, david has put me on pause due to ash
[17:24] <rharrison_> Will look into when time allows
[17:24] <edmoore> curse the ash
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[17:25] <rharrison_> ON the plus side with some debugging from Randomskk and jonsowman I got the pred working for the new launch coors
[17:25] <rharrison_> coords
[17:25] <edmoore> was it not working?
[17:25] <rharrison_> I just knackere a path config up
[17:25] <jonsowman> <Randomskk> I have the pred running multi-threaded and it's much faster
[17:25] <jonsowman> <Randomskk> I'll send the code later
[17:25] <rharrison_> cool
[17:25] <stilldavid> okay, okay
[17:25] <stilldavid> http://www.flickr.com/photos/stilldavid/sets/72157624101347600/
[17:26] <jonsowman> it's running on a machine with no webserver at the moment
[17:26] <rharrison_> What was the camera btw
[17:26] <edmoore> http://www.flickr.com/photos/stilldavid/4624702656/in/set-72157624101347600/ stunner
[17:26] <stilldavid> SD780IS (Ixus something or other in the UK)
[17:26] <stilldavid> with CHDK
[17:26] <GW8RAK> Superb photos
[17:26] <rharrison_> Nice
[17:27] <edmoore> rharrison_: the CUDA version of the flight predictor run a 600-case monte-carlo faster than our webserver ran a single case. joy.
[17:27] <stilldavid> wait 'till you see the video :)
[17:27] <rharrison_> high clouds
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[17:28] <rharrison_> CUDA?
[17:29] <edmoore> general purpose computation drivers for nvidia graphics cards
[17:29] <edmoore> they leave cpus for dead
[17:29] <edmoore> for certain types of computation anyway
[17:29] <rharrison_> Ahh yep I have heard about thouse been used for crunching
[17:29] <rharrison_> Better designed for it than the standard architecture
[17:30] <edmoore> for data-parallelisable floating point they're astonishing. so our lab just loves it
[17:30] <rharrison_> stilldavid, nice pics
[17:30] <sbasuita> its cause they have hundreds of floating point processing cores right?
[17:30] <edmoore> if my decoding thing actually works mathematicically in continuous time, it's absolutely the kind of thing that would benefit from GPU computation
[17:30] <edmoore> sbasuita: yup
[17:31] <rharrison_> edmoore, do you agree the cloud looks high given the amount of space in the pics
[17:31] <edmoore> that or the payload is just a bit lower
[17:31] <stilldavid> I _really_ wish I had valid altitude data
[17:31] <edmoore> the amount of space could be a function of UV filtration, moisture comment in the atmosphere, etc
[17:31] <rharrison_> yep it seems to vary quite a bit
[17:32] <edmoore> though stilldavid did mention a storm, and obviously the clouds get up into the jetstream for big storms
[17:32] <rharrison_> that surprised me
[17:33] <stilldavid> http://imgur.com/CclxT
[17:33] <stilldavid> that was facing towards the storm before launch
[17:34] <stilldavid> the payload avoided the storm for the most part, as you can probably tell in the pics
[17:34] <edmoore> i want to launch a payload into the belly of a storm some day
[17:34] <sbasuita> video through a thundercloud :D
[17:34] <edmoore> it'd be a challenging launch to say the least, but you could get some cool acceleration and velocity data from the updrafts within
[17:35] <edmoore> and the ublox modules have such superior dynamic performance that it'd be a shame not to use them
[17:35] <rharrison_> Intersting to know what a lightening strike would do
[17:35] <stilldavid> would need a bulletproof payload design
[17:36] <edmoore> we have some single-unit 1.5 inch wall styrofoam boxes which we're going to coat with some carbon fibre cloth we have lying around
[17:36] <rharrison_> stilldavid, waht was the GPS
[17:36] <edmoore> and then some soft foam
[17:36] <edmoore> hoping that'll be sufficient
[17:36] <edmoore> i was wondering about the physics of a lightening strike
[17:36] <stilldavid> rharrison_, Garmin GPS LV18 or something or other
[17:37] <edmoore> am not sure that it would necessarily attract lighening
[17:37] <rharrison_> Humm don't they stop at 25km
[17:37] <stilldavid> 18 LVC 5v version
[17:37] <rharrison_> No it won't shoten the path to ground by much or vis vera
[17:37] <stilldavid> I read somewhere that that was a fixed issue
[17:38] <sbasuita> could shock waves from thunder burst the balloon?
[17:38] <rharrison_> But then planes get struck so the pointed bits might be attractiv
[17:38] <rharrison_> e
[17:38] <rharrison_> stilldavid, cool
[17:38] <edmoore> sbasuita: possibly, although consider how stretchy the ballons are and how unstretched they will be at cloud altitudes
[17:38] <rharrison_> what was your highest reading
[17:39] <stilldavid> 25km or so
[17:39] <stilldavid> but it was acting wonky from the start
[17:39] <edmoore> the garmin seems to suggest the limits are {999kts && (60,000ft || 2g)} which suggests it should work on a balloon
[17:39] <edmoore> the tech spec, that is
[17:40] <stilldavid> I'll probably switch units next launch, to save weight if nothing else
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[17:40] <edmoore> i highly recommend the ublox modules
[17:40] <rharrison_> eveing jcoxon
[17:40] <edmoore> they're the best GPS units I've used
[17:40] <edmoore> and we've flown quite a few over the years
[17:41] <stilldavid> wait! I didn't look very carefully at the log... there's a reading at 32066.40
[17:41] <stilldavid> well, a few readings in a row
[17:41] <jcoxon> evening
[17:41] <stilldavid> it's weird that the lat/lon updated but not alt
[17:41] <edmoore> we had a 'stepped' altitude response on our flight with the flip micro HD video camera
[17:42] <stilldavid> jcoxon, finally did my launch :)
[17:42] <stilldavid> http://www.flickr.com/photos/stilldavid/sets/72157624101347600/
[17:42] <jcoxon> stilldavid, amazing
[17:42] <jcoxon> i think i was looking at your github today
[17:42] <stilldavid> oh, please don't do that :P
[17:42] <jcoxon> you credited a few of use which was cool
[17:42] <jcoxon> but rjharrison does the icarus project while i do the pegasus project
[17:42] <stilldavid> well, it's your code after all :P
[17:43] <jcoxon> just i have his rtty code
[17:43] <stilldavid> oh jeez... I'll get that sorted out
[17:44] <jcoxon> hehe
[17:44] <jcoxon> no worries
[17:44] <jcoxon> i appreciated my title
[17:44] <stilldavid> didn't think anyone would read all that... :P
[17:45] <edmoore> I just did now
[17:45] <jcoxon> hehe i was browsing
[17:45] <edmoore> seeing as someone brought it up :)
[17:45] <jcoxon> it did make me think that i should publish my flight computer code
[17:45] <jcoxon> stilldavid, those are amazing pictures
[17:46] <stilldavid> jcoxon, wait for the 1080p video I'm converting as I type!
[17:46] <edmoore> all ours is up but I *think* (correct me if I'm wrong) we're the only ones using ARMs atm
[17:46] <jcoxon> edmoore, i think you are
[17:46] <edmoore> which limits the use of some of it
[17:46] <stilldavid> I will probably stick with the Atmegas for the time being
[17:47] <jcoxon> stilldavid, we should probably make a lib for that radio code
[17:47] <jcoxon> perhaps rtty and morse in a arduino library
[17:47] <stilldavid> not a bad idea. nice to have it configurable and more of a drop-in thing.
[17:47] <edmoore> I like atmegas. but I bought an LPC2148 dev board a few years ago and arm7 just sort of became the defacto CUSF chip. the extra oomph is nice though.
[17:47] <jcoxon> i'm tempted by an mbed for an sstv mission
[17:48] <DanielRichman> who has had experience running linux on a balloon payload?
[17:48] <jcoxon> moi
[17:48] <edmoore> jcoxon:
[17:48] <DanielRichman> gumstix?
[17:48] <jcoxon> indeed
[17:48] <jcoxon> back in the day
[17:48] <DanielRichman> hmm
[17:48] <edmoore> aaaaaaaaaargh gumstix
[17:48] <sbasuita> not good?
[17:48] <stilldavid> I have an Overo Earth burning a hole in my pocket atm, but it was just too much :P
[17:48] <rharrison_> jcoxon, I have an mbed here you can have if you like
[17:48] <edmoore> wouldn't be unfair to say that the robustness has increased since gumstix stopped being the main flight computer?
[17:48] <jcoxon> stilldavid, hehe i got donated a few from gumstix
[17:48] <stilldavid> http://www.flickr.com/photos/stilldavid/3510335217/
[17:49] <jcoxon> edmoore, nah its true
[17:49] <jcoxon> but then i don't think uk ballooning would be around
[17:49] <edmoore> avionics written in bash...
[17:49] <jcoxon> perl
[17:49] <jcoxon> and bash
[17:50] <edmoore> we've found them (gumstix's) less reliable too. and the new ones run really hot
[17:50] <edmoore> not sure they'd survive a balloon flight
[17:50] <DanielRichman> sbasuita, perhaps if we need linux it should be secondary to the atmega which handles the important stuff
[17:50] <sbasuita> DanielRichman: yeah
[17:50] <edmoore> DanielRichman: a *very* good idea
[17:50] <jcoxon> i still have one working gumstix
[17:50] <sbasuita> DanielRichman: just refly a1 on the side
[17:50] <DanielRichman> sbasuita, and a2 :P
[17:50] <jcoxon> what are you going to use linux for DanielRichman sbasuita
[17:50] <jcoxon> ?
[17:51] <DanielRichman> jcoxon, a sponsor was throwing ideas around
[17:51] <sbasuita> jcoxon: some sponsor wants us to run software
[17:51] <DanielRichman> something that would require linux
[17:51] <sbasuita> he also wanted a green balloon ;P
[17:51] <DanielRichman> sbasuita, a1 as the backup; a2 providing half-duplex comms
[17:51] <DanielRichman> sbasuita, then just connect a2 + linux via serial
[17:51] <edmoore> so if you want to know what I 'reckon', then I 'reckon' that uCLinux on a blackfin board could be an excellent thing
[17:51] <edmoore> blackfins are gorgeous
[17:51] <jcoxon> blackfins can do magical things
[17:51] <G8TMV> or talk to Toby Churchill about a balloon board
[17:52] <edmoore> and they run very much cooler than comparable things.
[17:52] <jcoxon> stilldavid, SFE should stock radiometrix modules
[17:52] <stilldavid> jcoxon, we're working on it.
[17:52] <edmoore> that'd be good. we get through radiometrix modules pretyy fast
[17:52] <jcoxon> hehe
[17:52] <DanielRichman> SFE need a warehouse in the UK :P
[17:52] <edmoore> yes
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[17:52] <edmoore> i volunteer my room
[17:52] <jcoxon> haha
[17:52] <DanielRichman> :)
[17:53] <stilldavid> everyone, welcome brennen, he was my co-tracker
[17:53] <jcoxon> that said radiometrix direct is by far teh cheapest
[17:53] <brennen> hey folks.
[17:53] <stilldavid> driver, all around good guy. SFE employee as well
[17:53] <edmoore> greetings brennen
[17:53] <edmoore> right food
[17:53] <jcoxon> welcome to #highaltitude
[17:53] <brennen> i hear this is a cool place to hang out. :)
[17:53] <jcoxon> its a nice community
[17:53] <edmoore> except for jcoxon
[17:53] <edmoore> he's ruse
[17:53] <edmoore> watch out for him
[17:53] <edmoore> rude*
[17:53] #highaltitude: mode change '+o jcoxon' by ChanServ!ChanServ@services.
[17:54] <jcoxon> oh damn i gave ed op status as well
[17:54] <jcoxon> oh well
[17:54] #highaltitude: mode change '+o edmoore' by ChanServ!ChanServ@services.
[17:54] <rharrison_> the dragonfire is quite nice too
[17:54] <edmoore> two can play at that game
[17:54] <jcoxon> stilldavid, did you use dl-fldigi for your flight?
[17:54] <edmoore> 
[17:54] #highaltitude: mode change '-o edmoore' by ChanServ!ChanServ@services.
[17:56] Action: jcoxon is perhaps regretting following NASA on twitter
[17:56] <SpeedEvil> hey!
[17:56] <rharrison_> why is that
[17:56] <SpeedEvil> TLE's are a perfect match for twitter.
[17:56] <jcoxon> they twitter a lot
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[17:57] <SpeedEvil> there are comparatively cheap linux boards.
[17:57] <SpeedEvil> http://bifferos.bizhat.com/
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[17:57] <SpeedEvil> This one has relatively little IO, and would require a hub though
[17:57] <jcoxon> SpeedEvil, oh yeah i forgot about those
[17:58] <DanielRichman> sbasuita, hmm and perhaps a separate set of batteries for the linux board ^^
[17:58] <jcoxon> stilldavid, brennen feel free to add your project to the ukhas wiki
[17:58] <jcoxon> i think there is a US section already
[17:58] <jcoxon> even if its just a link to pictures
[17:58] <SpeedEvil> It's always good to see how others do things.
[17:58] <jcoxon> DanielRichman, definitely keep the atmega as doing quick stuff is a challenge with the linux system
[17:59] <SpeedEvil> Though US peeps tend to use APRS, for obvious reasons.
[17:59] <DanielRichman> ```````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````````+
[17:59] <DanielRichman> hmm whoops
[17:59] <jcoxon> thanks for that DanielRichman
[17:59] <sbasuita> `_`
[17:59] <rharrison_> heh
[17:59] <rharrison_> e
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[18:00] <rharrison_> stilldavid, APRS?
[18:01] <jcoxon> rharrison_, they uses an ntx2 with your rtty code
[18:01] <jcoxon> used*
[18:01] <jcoxon> via me
[18:01] <stilldavid> just tracked it alone
[18:01] <jcoxon> stilldavid, you are welcome to use dl-fldigi of course
[18:01] <SpeedEvil> http://www.aprs.org/
[18:01] <stilldavid> oh, I sure did :)
[18:01] <sbasuita> stilldavid: you should look into using aprs
[18:02] <jcoxon> stilldavid, as in the spacenear.us/tracker as well
[18:02] <jcoxon> sbasuita, aprs is no fun
[18:02] <sbasuita> jcoxon: its the same as spacenear!
[18:02] <rharrison_> dl-fldigi is customised to hab
[18:02] <jcoxon> nah its even easier then that
[18:03] <sbasuita> the hab nostalgia is kicking in already ;P
[18:03] <jcoxon> we made our system
[18:03] <jcoxon> :-p
[18:08] <rharrison_> Right home time
[18:11] <DanielRichman> sbasuita, when the exams finish are we still allowed to refer to ourselves as GCSE students when trying to blag free stuff?
[18:12] <SpeedEvil> Depends if you are anticipating failing, and having to resit.
[18:12] <stilldavid> jcoxon, I cloned the spacenear.us code on github, but haven't been able to get it to work just yet
[18:12] <stilldavid> it's also a huge bummer that there's literally NO cell service of any kind where we're launching
[18:12] <jcoxon> DanielRichman, untill you get the results you are still gcse
[18:12] <DanielRichman> right so we have until August to blag as much stuff as we possibly can
[18:13] <DanielRichman> sbasuita, you wanna give Energiser another call?
[18:13] <jcoxon> stilldavid, oh i mean that if you give us a sample string we can make an xml file for dl-fldigi
[18:13] <jcoxon> then it can be uploaded to the spacenear.us/tracker - saving you rolling your own copy
[18:14] <stilldavid> ah, nice! Will definitely do that next time. I pretty much followed the $$callsign,etc... convention found on the wiki
[18:14] <jcoxon> yeah
[18:14] <jcoxon> and if you recruite a few more listeners then you can get away with the lack of cell coverage
[18:14] <stilldavid> might have to set up a stationary tracker somewhere with an internet connection
[18:14] <rharrison_> stilldavid, it will drop right in then
[18:14] <rharrison_> stilldavid, that works very well
[18:14] <jcoxon> also its work trying out the new dl-fldigi
[18:15] <jcoxon> rharrison_, can you compile a fresh version and see if i've manage to fix some of the resize problems
[18:15] <jcoxon> didn't seem too happy with DanielRichman earlier but i'm hopeful!
[18:15] <rharrison_> DanielRichman, are we going to store sentances for uload?
[18:15] <rharrison_> jcoxon, sure but when i get home
[18:15] <jcoxon> no hurry
[18:15] <DanielRichman> rharrison_, depends if we want to feature freeze or not
[18:15] <DanielRichman> which was a suggestion, in order to get a release out fairly soon
[18:15] <rharrison_> it's a fluid thing
[18:16] <jcoxon> yeah i'm all for a feature freeze
[18:16] <rharrison_> hehe :)
[18:16] <rharrison_> The mans spoken
[18:16] <DanielRichman> well as is the way with git we can have the best of both worlds
[18:16] <rharrison_> hehe
[18:16] <rharrison_> cool
[18:16] <jcoxon> well i was a little naughty adding bearing and distance
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[18:17] <rharrison_> DanielRichman, I'll be in contact later once I have the gps stuff rolling and looking to thread it together if that is ok
[18:18] <DanielRichman> ok
[18:18] <rharrison_> 107r :)
[18:18] <rharrison_> or 8
[18:26] <rharrison_> OT http://news.bbc.co.uk/1/hi/science_and_environment/10132762.stm
[18:26] <russss> while we're OT check out where I went last night http://www.flickr.com/photos/russss/sets/72157623975249687/
[18:29] <stilldavid> that's a mouthful... "The Joint European Torus and Mega-Amp Spherical Tokamak experimental fusion reactors at Culham Science Centre."
[18:30] <stilldavid> that's what my next payload is going to look like: http://www.flickr.com/photos/russss/4624051412/in/set-72157623975249687/
[18:30] <russss> heh
[18:30] <russss> the JET experiment is way more impressive but it's also much more difficult to photograph
[18:30] <jcoxon> stilldavid, you've got it - obviously cold fusion can only be achieved at 32km altitude
[18:30] <jcoxon> so we just need to launch a fusion reaction
[18:30] <russss> I needed a much wider lens.
[18:31] <russss> jcoxon: well JET weighs about 30,000 tonnes excluding shielding, so you might need a couple of balloons
[18:31] <russss> and also it needs 1GW of power
[18:32] <jcoxon> russss, this is cold fusion though!
[18:32] <DanielRichman> no problem! just python import fission
[18:32] <russss> heh
[18:32] <jcoxon> hehe
[18:32] <jcoxon> probably in the new python you can import fusion now as well
[18:34] <russss> I was really impressed with how open those fusion guys were
[18:34] <russss> you can go there for free and they'll take you for a tour right into the reactor hall
[18:34] <jcoxon> i guess its pure science still rather than business technology or secret government
[18:35] <russss> it would have given most health and safety officers a stroke though
[18:36] <russss> they're just in the middle of re-fitting JET with pure beryllium tiles, and beryllium is nasty stuff
[18:36] <jcoxon> http://www.google.com/tv/
[18:36] <russss> plus the entire place is slightly radioactive because of all the neutrons the thing gives off
[18:37] <russss> http://www.flickr.com/photos/russss/4623433339/
[18:37] <russss> that's a single 1200-ton 3m thick concrete door
[18:38] <russss> (they have two)
[18:38] <jcoxon> wow
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[18:38] <brennen> dang.
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[18:43] <rharrison_> right I really am off home
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[18:44] <fsphil> irc at work, tsk tsk
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[18:57] <edmoore> so jcoxon is this an android apple tv?
[18:57] <edmoore> cos that could be a cool device
[18:58] <sbasuita> edmoore: yeah it runs android
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[19:01] <DaveyC> Good evening all :)
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[19:13] <stilldavid> so I'm grabbing 15-20s of video from various altitudes when the camera is not so shaky
[19:13] <stilldavid> should I compile it into one clip, or leave them separate and put on flickr?
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[19:18] <brennen> stilldavid: some launch/chase shots: http://www.flickr.com/photos/p1k3/sets/72157624101959976/
[19:19] <stilldavid> stilldavid, balloon hunter: http://www.flickr.com/photos/p1k3/4624344379/in/set-72157624101959976/
[19:19] <sbasuita> ouch, I wouldn't lay the balloon on the grass like that
[19:20] <edmoore> that's a manly pose
[19:20] <stilldavid> sbasuita, we had it on a tarp when we filled it
[19:20] <edmoore> sbasuita: reference the photo
[19:20] <sbasuita> oh right
[19:20] <sbasuita> that's the landing ;P
[19:20] <edmoore> cos it looks like it's burst and landed in all the photos where it's on the grass
[19:21] <edmoore> http://www.flickr.com/photos/p1k3/4624943312/in/set-72157624101959976/
[19:21] <edmoore> win!
[19:22] <brennen> edmoore: that was eerily accurate.
[19:22] <edmoore> eerily? SCIENCE!
[19:22] <edmoore> it works, darlings.
[19:22] <brennen> science can be eery, dammit. :)
[19:22] <edmoore> maybe the uncensored version sounds better
[19:23] <edmoore> well it doesn't do anything clever, it just integrates the flight path through the GFS forecast data, so obviously those supercomputers know their stuff
[19:23] <brennen> yeah. still, pretty cool to look at that shot this morning and realize how close it was.
[19:24] <edmoore> it's cool people are using it. wouldn't that though that SFE folk knew about little old us :)
[19:24] <SpeedEvil> HJas any analysis been done of how accurate past predictions would have been?
[19:24] <brennen> not quite as cool to realize that we drove about 30 miles further on those gravel roads than we would've had to, but it was kind of fun getting my car muddy.
[19:24] <SpeedEvil> Say with a trimmed slightly more accurate ascent rate
[19:31] <edmoore> that would be very useful data. we've not been keeping it unfortunately
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[19:36] <natrium42> hi nerd boys and nerd girls
[19:37] <sbasuita> superstar djs
[19:37] <natrium42> :}
[19:51] <edmoore> I don't think we have any nerd girls
[19:51] <natrium42> why not?
[19:52] <edmoore> maybe 'highaltitude' sounds off-puttingly misogynystic
[19:53] <natrium42> edmoore, we should start a "women in HAB" organization
[19:53] <edmoore> insert latex joke
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[19:59] <fsphil> looks like I returned at the right moment!
[19:59] <edmoore> to make a latex joke?
[20:00] <fsphil> nah, to much of a stretch
[20:01] <edmoore> we once walked in on our of our guys naked and covered in baby oil wrestling in the lab with an inflated weather balloon
[20:01] <sbasuita> just got back from dinner; someone please fill me in on the new #ha fetish!?
[20:02] <fsphil> I bet he had a great excuse!
[20:02] <edmoore> he just shrugged and said 'it's just something i do sometimes'
[20:03] <fsphil> the things people do for science
[20:03] <fsphil> :)
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[20:35] <edmoore> does anyone know of a wiki which uses markdown?
[20:36] <sbasuita> http://golem.ph.utexas.edu/wiki/instiki/show/HomePage ?
[20:37] <sbasuita> actually this is the home page http://www.instiki.org
[20:37] <edmoore> ooh and built in latex support
[20:37] <edmoore> I'm in
[20:52] <fsphil> when setting the rtty baud, any objection to defaulting to 'custom' even when a standard baud exists? figure that it's gonna be changed during the flight anyway
[20:53] <edmoore> at whel stage of the system are you setting a custom baud rate?
[20:53] <edmoore> what*
[20:53] <fsphil> when the payload settings are loaded
[20:53] <fsphil> er, custom shift
[20:53] <fsphil> not baud sorry
[20:54] <edmoore> i don't suppose it matters too much
[20:54] <fsphil> not really
[20:54] <fsphil> I was thinking of putting the shift control on the main from too
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[21:00] <fsphil> nah, nevermind -- not sure it's worth it
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[21:33] <Lunar_Lander> hello
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[21:39] <stilldavid> man it takes forever to upload to vimeo
[21:39] <edmoore> it really does
[21:39] <edmoore> and then it won't display right
[21:40] <stilldavid> I'm exporting the release and the pop as separate ~30s vids for flickr as I type
[21:40] <edmoore> sfe sounds like a good place to work
[21:41] <stilldavid> I really like it here... can't say I've done much 'work' today, but meh.
[21:41] <edmoore> that's why it's a good place to work :)
[21:41] <stilldavid> I think we're required to be on our internal IRC server, w/r/t someone complaining about not being able to be on IRC at work
[21:42] <stilldavid> did I mention the keg?
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[21:42] <edmoore> saw it on t'blog
[21:43] <Lunar_Lander> the thing is that Vimeo is higher quality than YT
[21:44] <stilldavid> I'm not a pro users, so I'm not entirely sure. Was going to try to export 1080p for YT, which I guess they do now
[21:44] <stilldavid> I can't keep up with all these sites
[21:44] <Lunar_Lander> ah
[21:44] <Lunar_Lander> yes YT can do 1080p now
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[21:48] <stilldavid> "your video is being processed" - flickr
[21:48] <Lunar_Lander> flickr can do video now?
[21:49] <brennen> yeah. they don't seem to advertise it too much.
[21:50] <stilldavid> release is up!
[21:50] <stilldavid> http://www.flickr.com/photos/stilldavid/4624700627/in/set-72157624101347600/
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[21:57] <stilldavid> ...annnnnnd the balloon bursting! http://www.flickr.com/photos/stilldavid/4624712115/
[21:58] <Lunar_Lander> the road layout looks like America :)
[21:58] <Lunar_Lander> and there is some heavy weather on the one side
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[21:59] <stilldavid> Lunar_Lander, shhhhh, don't worry about that
[21:59] <Lunar_Lander> xD
[21:59] <brennen> Lunar_Lander: i was wishing later on that the road layout were more like the parts of america where it's a on a predictable square mile grid. :)
[22:00] <Lunar_Lander> :P
[22:00] <Lunar_Lander> astonishing how calm the burst as such was
[22:00] <Lunar_Lander> only the descent kicking in caused the spinning and osciallions
[22:00] <Lunar_Lander> *oscillations
[22:01] <sbasuita> the burst is awesome
[22:01] <brennen> (i kind of want to launch some time from my home town: http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=laurel,+ne&sll=37.0625,-95.677068&sspn=56.462693,86.220703&ie=UTF8&hq=&hnear=Laurel,+Cedar,+Nebraska&ll=42.427765,-97.093048&spn=0.208308,0.3368&z=12 - map pretty much looks like graph paper.)
[22:01] <sbasuita> love the floating effect on the latex
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[22:06] <fsphil> this your balloon stilldavid ?
[22:07] <Lunar_Lander> yeah sbasuita
[22:08] <Lunar_Lander> and he did it better than Toshiba
[22:08] <sbasuita> toshiba?
[22:08] <Lunar_Lander> yeah the toshiba "space chair" ad
[22:08] <Lunar_Lander> they carried their HD cameras and a armchair by balloon into the stratosphere
[22:08] <Lunar_Lander> and when the balloon burst, the cameras struck the chair, causing it's armrests to come off
[22:09] <sbasuita> hah
[22:09] <Lunar_Lander> fortunately they did that in the Southwestern Desert in the US
[22:09] <Lunar_Lander> won't consider two armrests falling from 100,000 ft to be OK
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[22:10] <fsphil> would make for an odd insurance claim
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[22:11] <sbasuita> would they burn up?
[22:11] <Lunar_Lander> I don't know
[22:11] <sbasuita> must be reasonably dense so probably quite a high terminal velocity
[22:11] <sbasuita> although the chair might have been a custom fake to save weight
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[22:12] <sbasuita> which would explain why the armrests fell off in the first place ;)
[22:12] <edmoore> correct
[22:12] <edmoore> it was balsa
[22:12] <Lunar_Lander> http://www.youtube.com/watch?v=k6PSbUl_68k&feature=related
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[22:21] <fsphil> that's definitely one of the better burst videos -- it was amazingly smooth
[22:21] <Lunar_Lander> yeah
[22:21] <Lunar_Lander> congratulations stilldavid! :)
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[22:36] <jcoxon> evening all
[22:36] <jiffe> awesome stilldavid, how'd thinkgs go with the faa?
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[22:40] <stilldavid> jiffe, it's exempt. I couldn't wait any longer, so I just launched
[22:40] <jcoxon> stilldavid, nice videos
[22:41] <stilldavid> jcoxon, thanks :) next time I'm going to mount the video camera facing up and get the balloon bursting
[22:41] <fsphil> did the flight computer work fine?
[22:41] <stilldavid> fsphil, worked like a champ, but the GPS refused to update the altitude reading :-/
[22:41] <fsphil> ack
[22:41] <jcoxon> what gps was it?
[22:42] <stilldavid> Garmin GPS 18 LVC
[22:42] <stilldavid> I am going to change it out for the next launch, maybe a ublox or something
[22:42] <jcoxon> oh yes - ublox all the way
[22:42] <jcoxon> and a helical antenna
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[22:43] <stilldavid> I'm, uh, biased toward sparkfun stuff, of course
[22:43] <jcoxon> well there is a very nice ublox gps from SFE
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[22:46] <fsphil> ubox is the one earthshine was playing with a while back?
[22:46] <jcoxon> yeah
[22:46] <jcoxon> i've got one as well
[22:46] <jcoxon> fsa03
[22:46] <Lunar_Lander> hello jcoxon
[22:46] <jcoxon> have swapped the lassen iq out of my bh5 payload and instead added a fsa03
[22:46] <jcoxon> hey Lunar_Lander
[22:47] <Lunar_Lander> how's life?
[22:47] <jcoxon> not bad thanks
[22:47] <jcoxon> mid exams
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[22:52] <Lunar_Lander> ah ok
[22:52] <Lunar_Lander> I did something today which hadn't been done for 117 years
[22:52] <jcoxon> really?
[22:53] <Lunar_Lander> yes
[22:53] <Lunar_Lander> do you know S.A. Andrée
[22:53] <Lunar_Lander> ?
[22:54] <jcoxon> no
[22:55] <Lunar_Lander> he was the Swede who tried to travel to the North Pole by Balloon in 1897
[22:55] <jcoxon> oh rigth
[22:55] <jcoxon> i saw an exhibition in the arctic museum in tromso in norway
[22:57] <jcoxon> stilldavid, i've uploaded my lastest flight computer code
[22:57] <stilldavid> ah, nice! to github?
[22:57] <stilldavid> http://github.com/jamescoxon :-D
[22:57] <jcoxon> yes
[22:58] <stilldavid> I'll see about moving the rtty code into a library, that sounds like a fun exercise
[22:59] <jcoxon> also i've uploaded my version of TinyGPS lib
[23:00] <jcoxon> which also reports number of sats
[23:01] <stilldavid> very nice. Thanks so much!
[23:01] <jcoxon> and also only requires GGA nmea string rather than GGA and RMC
[23:01] <Lunar_Lander> and jcoxon: he did nine research flights in the balloon "Svea" in 1893-956
[23:01] <Lunar_Lander> *95
[23:02] <Lunar_Lander> actually he had planned 20-40 ascents
[23:02] <Lunar_Lander> and then he did never compare his results to other flights
[23:02] <jcoxon> oh right
[23:02] <jcoxon> and thats what you did today?
[23:02] <Lunar_Lander> and I actually found two flights which were in Germany exactly simultaneously
[23:02] <Lunar_Lander> http://img24.imageshack.us/img24/551/ccf2005201000000.jpg
[23:03] <Lunar_Lander> http://img687.imageshack.us/img687/3005/ccf2005201000001.jpg
[23:03] <jcoxon> nice
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[23:04] <Lunar_Lander> but the shitty thing is
[23:04] <Lunar_Lander> I forgot to mark the graphs :(
[23:05] <stilldavid> jcoxon, what is the "ballast" in the balloon? h2o or something you can drop safely?
[23:06] <SpeedEvil> H2O can't be easily dropped at -50C :)
[23:06] <SpeedEvil> alcohol
[23:06] <jcoxon> yeah surgical spirits
[23:06] <jiffe> haha stilldavid what is this? http://www.flickr.com/photos/stilldavid/4483191082/
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[23:07] <brennen> jiffe: one of our other coworks found that on his bike route to work a while back... we have absolutely no idea what happened.
[23:07] <stilldavid> jiffe, you tell me :P an exploded prius, I wish I knew the backstory
[23:07] <brennen> 'coworkers
[23:07] <Lunar_Lander> jcoxon what do you think is better?
[23:08] <Lunar_Lander> the temperature vs. altitude graph
[23:08] <Lunar_Lander> or the other one
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[23:08] astevens (~astevens@caosvm2.osuosl.org) got netsplit.
[23:08] <Lunar_Lander> I mean in terms of comparing the results
[23:08] <jiffe> heh I see.
[23:08] <Randomskk> stilldavid: sweet video :D
[23:09] <stilldavid> Randomskk, thanks :) I'm really excited how it turned out
[23:09] <Randomskk> pretty excellent results by the looks of things
[23:09] <fsphil> "And the flaw in the ejector seat was discovered too late"
[23:09] <brennen> i have wondered about batteries.
[23:10] <stilldavid> Randomskk, it was not without its "exciting" parts, trust me. But all in all, good pics, video and we recovered it so I can't complain
[23:10] <Randomskk> but of course, it'd be boring without some excitement :D
[23:10] <fsphil> did everything survive the landing?
[23:11] <Lunar_Lander> jcoxon?
[23:11] <jcoxon> ummm i'm not sure really
[23:11] <stilldavid> fsphil, I have my doubts about the video camera after reviewing the footage of it dying in a raincloud, but I'll check it when I get home
[23:12] <Lunar_Lander> ok
[23:13] <fsphil> hopefully just batteries
[23:13] <brennen> i kind of think the camera portholes were the biggest vulnerability to stuff getting wet.
[23:14] <brennen> on the other hand, that little point-and-shoot kept running for the whole trip, so i guess it wasn't that bad.
[23:14] <jcoxon> its not really usual to launch in to a storm though :-)
[23:14] <fsphil> nope lol
[23:14] <fsphil> and that was a big storm
[23:14] <jcoxon> the thing is though you don't want to seal it up too much
[23:14] <fsphil> (by uk standards at least)
[23:15] <brennen> fsphil: i wouldn't say it was _huge_ by high-plains standards, but... :)
[23:15] <jcoxon> or it'll fog up
[23:15] <fsphil> I bet brennen -- I'd love to go over and see some real weather some of these days
[23:16] <jcoxon> fsphil, have you been using hte latest version of dl-fldigi
[23:16] <jcoxon> i played with some of the resizing/maximising - is it better?
[23:16] <fsphil> yea jcoxon, hacking at it a bit now
[23:16] <fsphil> haven't tried resizing, one sec
[23:17] <stilldavid> what os do you test fl-digi on the most?
[23:17] <fsphil> yes that's much better -- I can't resize it vertically
[23:17] <fsphil> and everything gets scaled properly horizontally
[23:18] <fsphil> I think it's a tie between OS-X and Linux
[23:18] <jcoxon> not really windows though :-p
[23:19] astevens (~astevens@caosvm2.osuosl.org) got lost in the net-split.
[23:19] mike_jh_ (~mike@hopper.bobsbasement.co.uk) got lost in the net-split.
[23:19] <fsphil> I tested the windows build today at work, seems fine
[23:19] <jcoxon> great
[23:20] <fsphil> jcoxon, not sure if you've seen it but sometimes when the extracted string line changes colour, the border doesn't change
[23:20] <stilldavid> I had to scrap my linux box and use my mac for tracking. worked like a charm
[23:20] <stilldavid> some more footage at various altitudes: http://vimeo.com/11907761
[23:20] <jcoxon> fsphil, yeah i've noticed that
[23:20] <fsphil> happens in linux and windows too
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[23:26] <fsphil> I must fire up my mac, see if it still works
[23:26] <fsphil> got the last ppc macmini I think
[23:26] <jcoxon> hmmmm danielrichman had some issues when he ran the linux version for hte first time
[23:26] <jcoxon> but if he closed and reopned it it worked fine
[23:26] <jcoxon> fsphil, i can roll a ppc binary as well if you want
[23:27] <fsphil> go for it jcoxon -- don't the binaries contain both ppc and x86 on macs, or is that a historical thing now?
[23:28] <jcoxon> ummm you have to add the universal thing when compiling
[23:29] <jcoxon> doing a ppc is quite easy
[23:29] <fsphil> is there much involved in setting up a build environment on osx?
[23:29] <jcoxon> nope
[23:29] <stilldavid> the dev tools are on the install CD, it's a double click and go kinda thing
[23:30] <jcoxon> and to compile dl-fldigi all you need to do is link a file and then its just like on linux
[23:30] <fsphil> ah, my CD is in the attic .. with the spiders. I'll dig it out tomorrow, after I get the flame thrower
[23:30] <jcoxon> you can download it as well
[23:30] <jcoxon> of apple developers connection
[23:30] <jcoxon> off*
[23:30] <jcoxon> probably worth getting the latest version
[23:31] <fsphil> I'm using a fairly old version of the OS too, 10.4 I think
[23:31] <jcoxon> well i can do a 10.4 ppc tomorrow
[23:32] <fsphil> if it's no bother -- it's just for testing, I don't expect to be using it for tracking
[23:32] <fsphil> I'm not sure it even has a line-in
[23:33] <jcoxon> well i've got a ppc powerbook - would be interested to see if it runs better
[23:33] <jcoxon> the old version used 95% CPU
[23:33] <jcoxon> which was a bit much
[23:33] <fsphil> ooch
[23:33] <jcoxon> and who knows when i resucitate the dual G5 that i've got in the hackspace
[23:33] <jcoxon> then it might come in useful
[23:34] <jcoxon> who knows if thats possible
[23:39] <stilldavid> speaking of fl-digi: http://www.flickr.com/photos/stilldavid/4625544968/
[23:39] <stilldavid> and that's the last of my flickrSpam, promise
[23:40] <jcoxon> stilldavid, old dl-fldigi - you need the new version! much cooler
[23:40] <stilldavid> I've got a few versions laying around that I've been playing with... I'll be sure to grab the new one
[23:41] <stilldavid> y'know, use what works in testing and all that
[23:41] <jcoxon> pah its all about looking cool
[23:41] <stilldavid> well in that case!
[23:41] Action: stilldavid downloads new fl-digi
[23:42] <fsphil> just wait for the OpenGL version
[23:42] <jcoxon> os x version?
[23:42] Action: LazyLeopard must fetch and build the latest on my laptop sometime...
[23:42] <jcoxon> fsphil, movieOS style
[23:42] <fsphil> yep lol
[23:42] <stilldavid> jcoxon, me? 10.6.whateversnewest
[23:42] <jcoxon> with zooming things, a jurrasic park style file system
[23:43] <stilldavid> this is UNIX! I know UNIX!
[23:43] <jcoxon> http://github.com/jamescoxon/dl-fldigi/downloads
[23:43] <fsphil> I was 13 when I saw that movie, and I still cringed at that line
[23:43] <brennen> has anybody tried plugging flight data into google earth in realtime?
[23:44] <brennen> (or maybe that wouldn't even be feasible...)
[23:44] <jcoxon> brennen, yup, if you use the system with http://spacenear.us/tracker
[23:44] <jcoxon> there is a kml network link
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[23:44] <brennen> sweet.
[23:44] <Randomskk> woo, multithreaded hourly predictions is working
[23:44] <jcoxon> (bottom right, "Track in Google Earth"
[23:44] <Randomskk> it's like, loads faster
[23:45] <brennen> as you can probably tell, i'm completely new to all of this.
[23:45] <fsphil> multi-core ftw!
[23:45] <jcoxon> when the dl-fldigi + server works its very cool
[23:45] <jcoxon> especially with multiple listeners
[23:45] <Randomskk> http://cleric.randomskk.net/ but it looks identical! magic
[23:46] <Randomskk> just it only takes about 30 seconds or so to do a full week's predictions
[23:46] <Randomskk> step two is having it work with multiple users so you can store your own scenario and it'l run predictions for you
[23:48] <jcoxon> :-D
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[23:48] <fsphil> midnight approaches, g'night all!
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[23:48] <N900evil> neat!
[23:49] <Randomskk> (right now it's not cron'd or anything so that page won't update, but it does update very fast)
[23:49] <Randomskk> basically python just spams threads =D
[23:49] <Randomskk> normally python threads can't actually be multithreaded
[23:49] <Randomskk> but each thread actually starts a child predictor process, which can go on another core
[23:50] <jcoxon> cool
[23:52] <Randomskk> it could probably be optimised a bit more but
[23:52] <Randomskk> it's certainly faster
[23:53] <brennen> slick.
[23:54] <Randomskk> also we desperately need to get the new predictor code running on the one-off predict
[23:54] <Randomskk> I don't know why it isn't
[23:54] <Randomskk> but the whole predictor needs a better web interface anwyay
[23:58] <stilldavid> is -52.43 C unreasonably cold?
[23:58] <stilldavid> I mean, y'know, for this sort of thing
[23:58] <jcoxon> nah thats pretty normal
[23:58] <jcoxon> bottom end of normal
[23:59] <stilldavid> looks like I lost the (-) sign on my external temp readings... it starts normal, drops to zero, climbs to 53, back to zero and on to surface temps
[23:59] <jcoxon> hehe
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