highaltitude.log.20090718

[00:06] <edmoore> they're picking it up
[00:06] <edmoore> i'm doing landing prediction here, there are two cars out there
[00:06] <edmoore> we're communicating via the GB3PY repeater
[00:07] <edmoore> got a reasonable idea where it is, eta for them expected 12.25
[00:07] <SpeedEvil> :)
[00:09] <russss> excitement
[00:10] <Virca6424> do they have a fix yet?
[00:11] <Virca6424> just realised I have nobody's contact details
[00:12] Nick change: Virca6424 -> ms7821__
[00:17] <edmoore> ms7821: no fix yet
[00:17] <edmoore> just homing in
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[00:18] <rharrison_eee> any news
[00:18] <rharrison_eee> edmoore:
[00:19] <edmoore> they're 5 mins from predicted landing spot
[00:19] <rharrison_eee> cooll
[00:19] <rharrison_eee> any signal
[00:20] <edmoore> not as far as i know but haven't heard anything yet
[00:20] <edmoore> a, talking to them on the repater
[00:20] <rharrison_eee> hehe
[00:20] <rharrison_eee> bit of ham radio
[00:20] <edmoore> exactly
[00:21] <edmoore> very much nicer to use than mobiles actually
[00:21] <rharrison_eee> yep
[00:21] <rharrison_eee> i think we have been over this. we need 2xtranscivers in future
[00:22] <rharrison_eee> 1 4 hab; 1 4 ham
[00:24] <rharrison_eee> edmoore: b1057?
[00:25] <edmoore> that's the one
[00:25] <rharrison_eee> lots of fields too
[00:26] <rharrison_eee> is jc crashing with u guys
[00:26] <edmoore> he and gf are somewhere else
[00:26] <rharrison_eee> ooh
[00:26] <rharrison_eee> xyl with him
[00:27] <rharrison_eee> right i'm off to bed
[00:27] <rharrison_eee> i
[00:27] <ms7821__> what were the co-ords again? 52.0004, ?
[00:27] <rharrison_eee> i'm going to lach in about 4 weeks
[00:27] <rharrison_eee> launch
[00:27] <edmoore> just YL, rharrison_eee
[00:27] <rharrison_eee> lol
[00:27] <edmoore> 52.0128, 0.454125
[00:27] <rharrison_eee> true
[00:28] <edmoore> is my prediction
[00:28] <ms7821__> this is like geocaching with radio
[00:29] <rharrison_eee> nights all
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[00:30] <edmoore> ms7821__: foxhunting is what radio hams call it
[00:30] <edmoore> they've been at it for decades
[00:31] <edmoore> someone hides something that just bleeps at say 1hz, and you have to use directional antennas to home in on it
[00:31] <ms7821__> nice
[00:31] <edmoore> bleeps at a radio frequency, that is
[00:38] <ms7821__> hmm no sign of them at the new location either - have they found a signal?
[00:45] <edmoore> yes, just got word on gb3py
[00:45] <edmoore> they've some co-ordinates, they're tracking it down now
[00:46] <ms7821__> so it's alive :D
[00:46] <edmoore> seems so!
[00:47] Action: SpeedEvil wonders.
[00:47] <SpeedEvil> I suppose it's plausible that foxhunting could have even been done a century ago
[00:47] <ms7821__> are they parked up?
[00:48] <SpeedEvil> (though the transmitter would have been much harder to conceal)
[00:48] <ms7821__> hashing is kinda similar, but I dunno how old it is
[00:51] <ms7821__> oh crud, running out of battery
[00:51] <edmoore> they are parked yep
[00:52] <ms7821__> any idea where? I'll just go meet them there
[00:55] <edmoore> somewhere in a field off the b1057
[00:55] <edmoore> i don't think they'll be hanging around there, they're keen to get back
[00:55] <edmoore> where are you?
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[01:05] <ms7821__> bailing as I have no battery :(
[01:05] <ms7821__> good luck guys
[01:05] <edmoore> thanks ms7821__ will let you know how it goes
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[01:08] <g8khw-iPhone> Say edmoore did they get it back yet?
[01:08] <ms7821__> hmm police still searcing a frield near steeple bumpstead
[01:08] <edmoore> ?
[01:08] <ms7821__> field*
[01:09] <edmoore> police?
[01:09] <edmoore> g8khw-iPhone: they're still out there
[01:09] <ms7821__> wondered if there could have been a sighting
[01:09] <g8khw-iPhone> Ah - ta
[01:09] <edmoore> it could easily be in a field near there
[01:10] <ms7821__> probably something far less exciting
[01:10] <edmoore> i mean, that's where I predicted it would come down
[01:11] <g8khw-iPhone> Ooooo - drama comes to #highaltitude
[01:12] <edmoore> they've got it
[01:12] <ms7821__> yay
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[01:13] <g8khw-iPhone> Bonus ;-)
[01:14] <ms7821__> congrats
[01:19] <g8khw-iPhone> Night
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[01:28] <SpeedEvil> The police, or .. :)
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[01:29] <ms7821> hmm so that's a 10 minute timeout
[01:30] <SpeedEvil> pretty much.
[01:31] <SpeedEvil> My DSL fell over for a bit, but I came back.
[01:48] <ms7821> so the fuzz were parked up at 52.03378,0.45842
[01:49] <ms7821> that's 6 fields from edmoore's estimated location
[01:50] <ms7821> wish I'd spoken to them now
[01:53] <edmoore> they're just pulling into churchill
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[09:36] <jcoxon> morning all
[09:36] <sbasuita> jcoxon, hi
[09:36] <sbasuita> did you recover atlas?
[09:36] <jcoxon> yes
[09:36] <sbasuita> good : )
[09:36] <jcoxon> twas in a field very close to a pylon
[09:37] <sbasuita> really interesting flight path
[09:38] <jcoxon> yeah
[09:38] <jcoxon> shame we missed the middle bit :-p
[09:39] <sbasuita> yeh ;P
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[11:26] <edmoore> morning all
[11:29] <DanielRichman> hello
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[11:32] <jcoxon> morning
[11:32] <jcoxon> hey edmoore
[11:33] <edmoore> good morning jcoxon
[11:33] <edmoore> I'm keeping the seats warm here :)
[11:33] <jcoxon> huh?
[11:33] <edmoore> re: potential attempt 2?
[11:33] <jcoxon> yes
[11:34] <jcoxon> okay - lets brainstorm
[11:34] <jcoxon> i had an idea
[11:35] <jcoxon> could the balloon have twisted on itself closing the vent?
[11:35] <edmoore> i think that's improbable
[11:35] <jcoxon> it had quite a long neck you see
[11:35] <ms7821> I think you need a black box with a video recorder
[11:35] <jcoxon> was inspecting the dead balloon
[11:37] <jcoxon> okay so a 1.5kg balloon
[11:37] <jcoxon> do we have enough helium?
[11:37] <edmoore> fo shizzle
[11:37] <jcoxon> telem: http://www.pegasushabproject.org.uk/wiki/doku.php/missions:ballasthalo:one_telem
[11:37] <edmoore> barely used 1/5th the bottle yesterday
[11:37] <jcoxon> okay i'll call steve to get the balloon
[11:39] <edmoore> ok cool
[11:39] <jcoxon> need to fix the altitude overflow problem
[11:39] <edmoore> i reckon just try again but nail ourselves to the wb8elk data
[11:39] <edmoore> 2m/s ascent
[11:39] <edmoore> same hole
[11:39] <edmoore> 1.5 balloon
[11:40] <edmoore> and how long do you want to be up before sunset?
[11:40] <edmoore> gonna be an earlier one today
[11:40] <jcoxon> lets do it perfectly
[11:40] <jcoxon> so 1hr before
[11:40] <jcoxon> but edmoore it sort of doesn't make any sense if you look at his info
[11:40] <jcoxon> so launching at mid day resulted in a normal flight, no float
[11:41] <jcoxon> but if you launch to peak 1hr before sunset it floats
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[11:41] <jcoxon> hey RocketBoy
[11:42] <RocketBoy> hi jcoxon - I hear you got it back
[11:42] <jcoxon> yes
[11:42] <jcoxon> found it in a field near a pylon
[11:42] <edmoore> i reckon aim for the same as yesterday then
[11:42] <jcoxon> quite lucky as it was pretty damn dark
[11:42] <edmoore> or maybe ask it to get to ~30km 1hr before sunset?
[11:43] <jcoxon> edmoore, do you reckon the problem yesterday was we ascended to quickly to give it time to leak enough helium
[11:43] <jcoxon> so it reached burst?
[11:43] <edmoore> yep
[11:43] <edmoore> almost certainly
[11:43] <jcoxon> okay
[11:43] <edmoore> if you go for ~2m/s ascent, you have much less helium to get rid of and much more time to get rid of it
[11:43] <jcoxon> okay
[11:44] <edmoore> haha jimbo
[11:44] <edmoore> aiming for 2.2m/s with a 550g balloon, you're simming to 38km
[11:44] <edmoore> 550g payload*
[11:45] <edmoore> so i reckon aim to be at 30km ~ 0-1hr before sunset, and then there's loads of margin left
[11:45] <jcoxon> okay
[11:46] <jcoxon> 5pm launch then?
[11:46] <edmoore> well actually, what do you think to that relative to what wb8elk did
[11:46] <jcoxon> i think thats the best plan
[11:46] <jcoxon> 30km 1hr before
[11:47] <jcoxon> if it wasn't GPSL2009 i'd try and contact bill
[11:47] <edmoore> about 4hr ascent to 30km
[11:47] <edmoore> sunset at yeah, 10pm at 30km
[11:47] <edmoore> BST/GMT (aaarrrgh)
[11:49] <edmoore> BST I think - sunset at 30km ~ 10pm BST
[11:49] <edmoore> so yes, launch at 6pm :)
[11:50] <jcoxon> hmmmm thats quite tight with a 4hr ascent
[11:51] <edmoore> oh sorry, i forgot to add the hour
[11:51] <edmoore> 5pm
[11:53] <jcoxon> okay i'll get some new batteries and fix this problem with the altitude
[11:53] <jcoxon> hmmm whats the maximum size of a float?
[11:53] <RocketBoy> was the float OK?
[11:54] <RocketBoy> (the one on the balloon)
[11:54] <jcoxon> oh no - there wasn't any float
[11:54] <jcoxon> oh right
[11:54] <jcoxon> yes the waterflaot
[11:54] <jcoxon> recovered just fine
[11:54] <RocketBoy> excellent
[11:54] <jcoxon> i meant a variable float
[11:56] <RocketBoy> floats are 32 bit normally - doubles are normally 64 bits
[11:56] <edmoore> the maximum number you can store in it is huge, i think
[11:57] <RocketBoy> from memory I think its 1 sign bit 7 bit exponant
[11:57] <jcoxon> okay, then the problem was that converting from a float to an int
[11:57] <jcoxon> meant that the int overflowed
[11:58] <edmoore> something or other x 2^127
[11:58] <RocketBoy> yeah that sounds right
[11:58] <jcoxon> what was odd was that on the way down it too a while to convert back
[11:59] <edmoore> wikipedia reckons that works out to 3.4 x 10^38
[11:59] <jcoxon> from -29856 to 28198
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[11:59] <jcoxon> in three minutes
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[12:00] <jcoxon> hehe
[12:00] <jcoxon> guys
[12:01] <jcoxon> -29856 is 35716m
[12:01] <RocketBoy> if you converting from float to int i don't think you can garentee -29856 is 35680
[12:01] <jcoxon> okay
[12:01] <jcoxon> it sort makes sense
[12:02] <jcoxon> it doesn't fit in the order of ascent and descent
[12:02] <RocketBoy> try it and see what it gives
[12:02] <jcoxon> as it drops about 8km in 3 mins
[12:02] <jcoxon> i'll run some fake gps data into it in a second to test it out
[12:03] <RocketBoy> bbl
[12:05] <jcoxon> okay edmoore so on my list of things to do:
[12:05] <jcoxon> get balloon
[12:05] <jcoxon> get more batteries
[12:05] <jcoxon> fix altitude error
[12:05] <jcoxon> thats it
[12:05] <edmoore> ok perfeck
[12:05] <edmoore> we have all the other kit still here, ready and waiting
[12:06] <jcoxon> i'm thinking with the morse beacon might make the antenna a little crapper so it doesn't get in the way of the flight
[12:11] <edmoore> hrm
[12:11] <edmoore> ok
[12:14] <russss> so what went wrong? was it caused by the int overflow or was that a different problem?
[12:15] <SpeedEvil> edmoore: how did you calculate the hole size - did you include the fact that the differential pressure as you go up drops, and the gas volume rises - so that the gas flow drops lots
[12:15] <SpeedEvil> ?
[12:15] <SpeedEvil> and congrats on finding
[12:16] <edmoore> SpeedEvil: given it's a roughly 9-unknown-variable problem for me as a signal processing and control bloke (not fluids or thermodynamics!) I can't really contribute anything useful, so I agreed with james - just copy what worked for Bill Brown
[12:17] <edmoore> except we went up miles faster yesterday
[12:17] <SpeedEvil> ah
[12:17] <edmoore> to get to the top in time for sunset
[12:17] <edmoore> obviously that meant it couldn't get rid of its helium quickly enough
[12:17] <edmoore> i think we're going much slower today
[12:18] <jcoxon> russss, the int problem was seperate
[12:18] Action: SpeedEvil wonders about internal pressure vs radius.
[12:28] <jcoxon> off for lunch
[12:28] <jcoxon> few issues with flight computer
[12:28] <jcoxon> will fix aferwards
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[14:04] <jcoxon> hey edmoore
[14:05] <edmoore> cap'n
[14:05] <jcoxon> just reflashed the flight 'puter
[14:05] <jcoxon> going to test it with some fake gps
[14:05] <edmoore> is she ship-shape?
[14:05] <edmoore> ok cool
[14:05] <edmoore> what is the altitude record btw?
[14:05] <edmoore> and did you get it yesterday?
[14:05] <jcoxon> 35200
[14:05] <jcoxon> probably 35700
[14:06] <edmoore> :)
[14:07] <edmoore> john from vorticity just asked me the morse strategy as he could hear the rtty throuhg the scanner but it was being marched all over by the morse
[14:08] <jcoxon> yeah
[14:09] <jcoxon> i still think its key to fly it
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[14:09] <edmoore> how installed is the circuit-design unit?
[14:09] <edmoore> hi simonvc
[14:09] <simonvc> Hey how did the lauch go from cambridge go?
[14:09] <edmoore> because we may have a .650 radiometrix lying around
[14:09] <jcoxon> it could be easily desoldered in 5 mins
[14:09] <edmoore> I'll let jcoxon tell you simonvc :)
[14:10] <edmoore> jcoxon: I'll check for the radiometrix
[14:10] <edmoore> may solve that one
[14:10] <edmoore> if you think it's a fairly easy swap
[14:10] <simonvc> james?
[14:11] <simonvc> ooh, flickr pics indicate upness..
[14:11] <simonvc> lol at "harmless science experiment" :-)
[14:12] <edmoore> actually james might be a bit busy. I'll summarise: It went up, the flight computer performed really very well indeed (after it was fixed from being dropped out of an upper floor window :p )
[14:12] <simonvc> how high? and did you get it back?
[14:12] <edmoore> however, no float achived as the balloon was probably overfilled, and so it reached its burst diameter/height faster than the helium was venting out
[14:12] <edmoore> 35.7km he thinks, which would be a new uk record, and yes, it was recovered at about 1am
[14:13] <simonvc> wow awesome!
[14:13] <edmoore> just a hundred meters or so from the predicted spot, apparently
[14:13] <edmoore> simonvc: we're flying it again this evening
[14:13] <simonvc> orly?!
[14:13] <edmoore> bigger balloon, much less helium - it may actually achieve float
[14:13] <simonvc> from cambridge?
[14:13] <edmoore> yes
[14:13] <edmoore> Churchill College
[14:13] <edmoore> that's why I mentioned that james might be busy ;)
[14:13] <simonvc> what time is launch? i might get the motobike out and blast up, always wanted to see a baloon go up
[14:14] <edmoore> I think we said 5pm
[14:14] <jcoxon> edmoore, what time GMT?
[14:14] <jcoxon> just emailing W0RPK
[14:14] <edmoore> 4
[14:14] <simonvc> 4gmt so 5 bst?
[14:14] <edmoore> yep
[14:14] <edmoore> jcoxon: is steve coming?
[14:14] <jcoxon> no
[14:14] <jcoxon> i need to collect the balloon
[14:15] <jcoxon> will leave here at 3pm
[14:15] <jcoxon> go get the balloon
[14:15] <jcoxon> and then come to yours
[14:15] <jcoxon> prob 4.30
[14:15] <jcoxon> but will have everything set up
[14:15] <jcoxon> actually i'll leave a bit earlier
[14:15] <simonvc> Ace, do you guys mind a tourist coming?
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[14:17] <edmoore> simonvc: for sure yes, though you may get roped into helping out with prep :)
[14:18] <jcoxon> hehe i'm fake gps testing
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[14:18] <jcoxon> its climbing at 20m/s
[14:18] <simonvc> love to :-)
[14:19] <simonvc> ill just have some lunch then head up. ill bring my iphone so i can find you guys
[14:19] <edmoore> ok - i'll pm you my phone number
[14:19] <edmoore> though i don't always have signal in 'HQ'
[14:20] <jcoxon> edmoore, you free right now?
[14:20] <jcoxon> any chance you pop out and get some batteries?
[14:20] <jcoxon> if not i'll get them on my way in
[14:20] <edmoore> lithium energizers?
[14:20] <jcoxon> yeah
[14:20] <edmoore> AA?
[14:20] <jcoxon> i mean the ones we used last time are still good
[14:20] <jcoxon> but if we do float its probably best
[14:20] <jcoxon> yeah 8x AAs
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[14:20] <edmoore> ok
[14:21] <jcoxon> will use the 'used' ones in the beacon
[14:21] <edmoore> jcoxon: we need cable ties
[14:21] <jcoxon> oh crap
[14:21] <jcoxon> okay
[14:21] <jcoxon> i'll see if i have any here
[14:22] <jcoxon> damn
[14:22] <jcoxon> $$ATLAS,64,13:20:12,52.350,0.311,32760,20.0;0;0
[14:22] <jcoxon> $$ATLAS,65,13:20:21,52.355,0.325,-32596,20.0;0;0
[14:24] <edmoore> I hope the wind dies down a little
[14:24] <jcoxon> oops
[14:25] <jcoxon> needs to be ltoa
[14:26] <jcoxon> bbiab
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[14:30] <edmoore> fergusnoble: do we have a .650 radiometrix lying around?
[14:30] <fergusnoble> perhaps somewhere
[14:30] <fergusnoble> not that i can think of
[14:30] <fergusnoble> brb
[14:33] <jcoxon> okay altitude issue fixed
[14:33] <SpeedEvil> Still no cutdown?
[14:38] <jcoxon> no cutdown
[14:38] <SpeedEvil> Do you have the cutdown logic to indicate it'd fire it?
[14:38] <jcoxon> yes
[14:39] <jcoxon> okay i'm off
[14:39] <jcoxon> be contactable by phone
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[14:41] Nick change: edmoore -> edmoore|away
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[16:16] Nick change: John -> Guest52263
[16:16] Nick change: Guest52263 -> junderwood
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[16:51] <sbasuita> Launch in ten minutes then?
[17:48] rjharrison (n=rharriso@80.176.172.227) joined #highaltitude.
[17:49] <sbasuita> rjharrison, hi
[17:49] <sbasuita> is there some launch going on today?
[17:49] <rjharrison> Yep in about an hour
[17:49] <rjharrison> James is doing it again hopfully getting it right this time
[17:51] <SpeedEvil> Any payload you get back...
[17:53] <sbasuita> oh cool
[17:53] <SpeedEvil> http://elinux.org/BeagleBoard/contest
[17:53] <SpeedEvil> HA?
[17:55] <SpeedEvil> beagleboard giveaway
[18:06] <rjharrison> ping edmoore|away
[18:06] <edmoore|away> hi rjharrison
[18:06] <rjharrison> i GATHER A REPEAT IS ON THE CARDS
[18:06] <rjharrison> opps
[18:07] <rjharrison> ETA 4 launch?
[18:07] <rjharrison> Need to fit in guests and dinner
[18:07] <rjharrison> it's dry up here so i'm getting the Yagi out
[18:29] <chembrow>
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[18:55] Nick change: chrisfoote -> SpikeUK
[18:56] <rjharrison> edmoore|away Any news on launch
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[19:13] <rjharrison> hey ja
[19:13] <rjharrison> james
[19:13] <rjharrison> I have cleard down the tracker ready for launch
[19:14] <jcoxon> hey thanks
[19:14] <jcoxon> we are flying
[19:15] <jcoxon> am failing prob check
[19:16] <jcoxon> ping rjharrison
[19:16] <rjharrison> ok
[19:16] <rjharrison> Icant see any data comming through
[19:17] <jcoxon> on view.php
[19:17] <rjharrison> I can now
[19:17] <rjharrison> Ok I'll sort it
[19:17] <rjharrison> On sec
[19:17] <jcoxon> rjharrison, had an issue
[19:17] <rjharrison> one
[19:17] <jcoxon> alt is now a float
[19:17] <rjharrison> Oh
[19:17] <jcoxon> sorry emergency change in the field
[19:17] <rjharrison> Yep and it inverts
[19:17] <rjharrison> oh
[19:17] <rjharrison> ok
[19:17] <SpeedEvil> Not an issue unless it goes over 65km :)
[19:18] <jcoxon> yeah i changed it to long and it had a little issue
[19:18] <jcoxon> so emergency reflash
[19:22] <rjharrison> lol
[19:22] <rjharrison> np
[19:22] <rjharrison> Should be tracking fine now
[19:22] <rjharrison> Will get the yagi out today
[19:22] <SpeedEvil> And there it is.
[19:23] <jcoxon> rjharrison, yeah i think its a better signal
[19:23] <rjharrison> http://spacenear.us/tracker/
[19:23] <rjharrison> It was a bit crapy yesterdy
[19:23] <rjharrison> I can hear a bit now
[19:24] <edmoore|away> cool
[19:24] Nick change: edmoore|away -> edmoore
[19:33] <jcoxon> oops sorry swapping antennas
[19:35] <sbasuita> What's the predicted flight path for this one?
[19:35] <sbasuita> (any chance of it floating down south)
[19:38] <rjharrison> NO GPS DATA
[19:38] <rjharrison> what's that
[19:38] <rjharrison> no lock
[19:39] <jcoxon> yeah that'll happen occasionally
[19:43] <rjharrison> http://www.robertharrison.org/listen/time.png
[19:43] <rjharrison> naff data in there
[19:43] <rjharrison> This will update every 5 mins or so
[19:43] <jcoxon> good work
[19:43] <jcoxon> fergus and i were just about to make this sort of map
[19:43] <rjharrison> We want a nice paraboloa
[19:44] <rjharrison> sorry
[19:44] <rjharrison> :)
[19:49] <jcoxon> hehe
[19:50] <jcoxon> fingers crossed :-p
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[19:51] <fergusnoble> hi
[19:51] Nick change: edmoore -> ed|M0TEK
[19:52] Nick change: fergusnoble -> fnoble|M0NBL
[19:57] Nick change: rjharrison -> rharrison|2e0rjh
[19:58] <rharrison|2e0rjh> http://www.robertharrison.org/listen/loggers.php
[19:58] <rharrison|2e0rjh> http://www.robertharrison.org/listen/time.png
[20:00] <ed|M0TEK> rharrison|2e0rjh: any chance of some manual sanity checking?
[20:00] <ed|M0TEK> there's a couple of spurious ones
[20:00] Nick change: junderwood -> junderwood|BICST
[20:01] Action: RocketBoy sneezes checksums
[20:03] <rharrison|2e0rjh> lol
[20:03] Action: rharrison|2e0rjh agrees
[20:03] <rharrison|2e0rjh> I hope it works today
[20:03] <rharrison|2e0rjh> ie float
[20:03] <ed|M0TEK> rharrison|2e0rjh: what about the probability checker, in whatever stae it's in?
[20:03] <ed|M0TEK> 10km any sec now
[20:07] <rharrison|2e0rjh> Well it worked fine yesterday
[20:07] <rharrison|2e0rjh> I'll pop it back on an see how it fairs if you like
[20:08] <ed|M0TEK> ta
[20:08] <RocketBoy> any idea why I'm not showing up as logging?
[20:08] <ed|M0TEK> might clean up this html a bit
[20:08] <ed|M0TEK> kml*
[20:08] <fnoble|M0NBL> rharrison|2e0rjh: shall i weed out those dodgy points?
[20:08] <ed|M0TEK> if the kml is to be leivied, james has got the altitude record, just about
[20:08] <ed|M0TEK> with a peak altitude of 9,300km
[20:09] <rharrison|2e0rjh> http://www.robertharrison.org/listen/time.png
[20:09] <rharrison|2e0rjh> lol
[20:10] <rharrison|2e0rjh> sure if you like
[20:10] <rharrison|2e0rjh> fnoble|M0NBL Do you want to use sql to do it?
[20:10] <rharrison|2e0rjh> I'll give you the login
[20:10] <fnoble|M0NBL> i can change the db yeah
[20:10] <fnoble|M0NBL> i have natrium's login
[20:10] <rharrison|2e0rjh> or mysql administrator is good for this too
[20:11] <fnoble|M0NBL> ok, is there something like phpmyadmin installed?
[20:11] <rharrison|2e0rjh> Sure play with natriums data
[20:11] <rharrison|2e0rjh> I have a copy on my server for the graphs
[20:11] <rharrison|2e0rjh> I have guests at the moment or I would fix it
[20:13] <jcoxon> hmmm we seem to be missing data on hte maps
[20:14] <rharrison|2e0rjh> http://www.robertharrison.org/listen/time.png
[20:14] <rharrison|2e0rjh> A bit cleaner
[20:17] <jcoxon> rharrison|2e0rjh, hey, just wondering - don't seem to be mapping any data
[20:23] <rharrison|2e0rjh> fixed it's your float
[20:24] <rharrison|2e0rjh> :-P
[20:24] <jcoxon> thank you :-D
[20:24] <jcoxon> literally wrote the code in the field
[20:25] <rharrison|2e0rjh> hehe
[20:25] <rharrison|2e0rjh> I'm not sure I have fixed it
[20:26] <rharrison|2e0rjh> wait a sec
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[20:32] <ed|M0TEK> i've not got enough signal for a decent decode, i'm going to wait for it to swing back west, then i'll attack it with full force of a 9-el yagi.
[20:34] <RocketBoy> tis a cracking signal ere
[20:34] <ed|M0TEK> sure, i'm just facing west with a whip
[20:34] <RocketBoy> it more or less over Norwich
[20:34] <ed|M0TEK> james on the room opposite facing west has a nice signal still
[20:46] <jcoxon> evening RocketBoy
[20:47] <sbasuita> Damn... fldigi doesn't seem to be adjusting its 350 shift down a bit to match the signal
[20:47] <sbasuita> ; (
[20:47] <sbasuita> hearing it better than yesterday as well
[20:47] <jcoxon> sbasuita, you should need to shfit it
[20:47] <jcoxon> its pretty much bang 350
[20:48] <jcoxon> well a little either side
[20:48] <jcoxon> fldigi can cope with that
[20:48] <sbasuita> it is a wee bit smaller on each side
[20:48] <sbasuita> getting it on .075
[20:48] <sbasuita> odd because listening to the signal it sounds just about decodeable
[20:48] <jcoxon> sbasuita, try .0736
[20:48] <jcoxon> thats what we are getting it on
[20:49] <sbasuita> Yeah, same signal
[20:49] <sbasuita> just higher pitch ;)
[20:49] <jcoxon> okay
[20:49] <jcoxon> if you can't decode it try shifting you antenna a little bit
[20:50] <sbasuita> Yeah, I'll go for a walk about - limited of course by my audio lead ;P
[20:50] <jcoxon> yeah at long distance small adjustments help
[20:50] <rharrison|2e0rjh> fixed soory
[20:50] <sbasuita> But first to try and untangle the mess of linux audio and try and get mic input going on headphone output :S
[20:50] <rharrison|2e0rjh> wiull have to debug that later
[20:50] <jcoxon> also with that radio - just need to rotate the radio
[20:51] <jcoxon> rharrison|2e0rjh, no worries
[20:51] <jcoxon> thanks for fixing
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[20:52] <sbasuita> BTW does the output volume on the radio have any effect on how well fldigi can decode?
[20:52] <jcoxon> yes
[20:53] <sbasuita> I've currently got it set up very low so that everything is blue and signal is yellow
[20:53] <sbasuita> that is ok i assume?
[20:54] <jcoxon> yeah but you want chunky lines
[20:54] <jcoxon> not thin ones
[20:54] <sbasuita> right
[20:55] <sbasuita> Is thing going out to sea? How long is the expected flight?
[20:55] <jcoxon> it should curve round and pass over the wash
[20:55] <jcoxon> it all depends on if it floats or not
[20:57] <sbasuita> Also, is it spouting morse code around 436.5?
[20:58] <rharrison|2e0rjh> http://www.robertharrison.org/listen/time.png
[20:58] <rharrison|2e0rjh> we want the line to bend a little
[20:58] <rharrison|2e0rjh> Hole size?
[20:58] <jcoxon> sbasuita, yes
[20:58] <sbasuita> Sorry for the question bombardment ;P.... what is the expected float altitude?
[20:59] <jcoxon> sbasuita, who knows
[20:59] <sbasuita> jcoxon, would that be easier to decode than the rtty?
[20:59] <jcoxon> rharrison|2e0rjh, same hole
[20:59] <rharrison|2e0rjh> Ahhh
[20:59] <rharrison|2e0rjh> Wahy
[20:59] <jcoxon> sbasuita, the morse is just a beacon
[20:59] <sbasuita> ah right
[20:59] <sbasuita> But what is it saying
[20:59] <jcoxon> rharrison|2e0rjh, bigger balloon, slow ascent rate - more time to dump
[20:59] <rharrison|2e0rjh> Why I thought you needed more
[20:59] <rharrison|2e0rjh> ok cool
[20:59] <jcoxon> we just reached burst before float
[20:59] <rharrison|2e0rjh> I'll go with that sirt
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[21:01] <sbasuita> Aww... the frustrating thing about digital is hearing it but not being able to know what it means :(
[21:02] <SpeedEvil> wy not fldigi?
[21:02] <sbasuita> SpeedEvil, it is spouting gibberish
[21:02] <SpeedEvil> ah - sorry
[21:02] <jcoxon> sbasuita, all setup correctly?
[21:02] <jcoxon> 350 shift, 50baud, ascii8?
[21:03] <sbasuita> jcoxon, I've selected atlas, and those are the configs, yes
[21:03] <sbasuita> signal looks pretty strong on the waterfall as well
[21:03] <sbasuita> Interestingly I found the strongest spot on my north facing window
[21:03] <jcoxon> you should be able to decode then
[21:03] <ed|M0TEK> sbasuita: upper side band?
[21:03] <sbasuita> i mean south
[21:03] <sbasuita> ed|M0TEK, yes
[21:04] <jcoxon> sbasuita, screenshot please :-)
[21:04] <sbasuita> jcoxon, already pushed the button ;D
[21:05] <rharrison|2e0rjh> http://www.robertharrison.org/listen/time.png
[21:05] <rharrison|2e0rjh> I'm just posting that when i update it
[21:05] <rharrison|2e0rjh> i have heard of cron
[21:05] <sbasuita> jcoxon, http://www.photodump.com/Guest/f15ece759a3b72b8.png.html
[21:06] <rharrison|2e0rjh> just have guests atm
[21:06] <jcoxon> rharrison|2e0rjh, don't you have guests!
[21:06] <junderwood|BICST> Needed to select Rv on mine to turn gibberish into sensible text
[21:06] <rharrison|2e0rjh> yep
[21:06] <sbasuita> junderwood|BICST, rv?
[21:06] <sbasuita> ah reverse
[21:06] <ed|M0TEK> sbasuita: retune so th rtty isn't so near the cutoff
[21:06] <ed|M0TEK> you'll get a few more dB
[21:07] <junderwood|BICST> bottom right hand corner
[21:07] <ed|M0TEK> oh gosh yes, reverse
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[21:07] <sbasuita> retuned and reversed... still no telemetry
[21:09] <sbasuita> Listening through headphones... the signal isn't being degraded en route to sound card
[21:09] <ed|M0TEK> sbasuita: just triple checking, definitely no parity, 1.5 stop bits?
[21:09] <sbasuita> ed|M0TEK, 1.5?
[21:09] <sbasuita> I've got one
[21:09] <ed|M0TEK> try 1.5
[21:09] <sbasuita> ed|M0TEK, still gibberish
[21:10] <sbasuita> oh oh
[21:10] <sbasuita> unchecked reverse now
[21:10] <sbasuita> getting strings
[21:10] <sbasuita> ; O
[21:10] <ed|M0TEK> yay!
[21:10] <sbasuita> : ) :) :)
[21:10] <sbasuita> bit mangled
[21:10] <sbasuita> but $$ atlast numbers etc
[21:10] <sbasuita> thanks guys
[21:10] <junderwood|BICST> I must have a backwards receiver :-)
[21:11] <ed|M0TEK> sbasuita: it'll come back towards us soon
[21:11] <sbasuita> ed|M0TEK, cool, where are you at?
[21:11] <ed|M0TEK> fergus just came up here with a try and 3 pints of lager
[21:11] <ed|M0TEK> the man is a genius
[21:11] <ed|M0TEK> sbasuita: cambridge
[21:11] <ed|M0TEK> churchill
[21:11] <ed|M0TEK> 'HQ'
[21:12] <sbasuita> hah, I'm the most southern listener here in bracknell
[21:12] <sbasuita> but doing well with my little whip imho : )
[21:13] <sbasuita> Opening the window ruins the signal... the joys of radio ; P
[21:14] <SpikeUK_> "Bracknell"? Northener! Spike in Weybridge ;-)
[21:16] <sbasuita> SpikeUK_, hehe, don't see you on the map
[21:16] <ed|M0TEK> SpikeUK: also in weybridge is Martin Lynch and Sons
[21:16] <ed|M0TEK> hamradio bankrobbers of the first order
[21:16] <SpikeUK_> Nope - new boy!
[21:18] <SpikeUK_> Nope also - that's Chertsey - other side of the river ;-)
[21:18] <ed|M0TEK> it's all too far away from me, in horsham
[21:19] <sbasuita> ed|M0TEK, surely only slightly further from me
[21:19] <sbasuita> ed|M0TEK, and probably with better equipment, no?
[21:20] <rharrison|2e0rjh> http://www.robertharrison.org/listen/time.png
[21:20] <sbasuita> Argh... so close to getting full strings. Just a handful missing each time
[21:20] <rharrison|2e0rjh> I have signal fine in yorkshire
[21:20] <sbasuita> (of characters)
[21:20] <rharrison|2e0rjh> $$ATLAS,858,20:20:18,52.747,1.234,20829.000,2.1;0;0
[21:21] <sbasuita> $$LAS,853,20:19:23,52.745,1.232,201.0;0;0
[21:21] <sbasuita> $AS,854,20:1933,20734.000,2.1;0;0
[21:21] <sbasuita> that sort of thing
[21:21] <ed|M0TEK> http://www.flickr.com/photos/25036435@N00/3732459035/
[21:22] <ed|M0TEK> left to right, m0tek, m6jcx, m0nbl
[21:22] <sbasuita> ed|M0TEK, and in everyday names?
[21:22] <ed|M0TEK> ed, james, fergus
[21:22] <sbasuita> cool :)
[21:23] <SpikeUK_> What happened to the "try"
[21:23] <SpikeUK_> of lager?
[21:24] <ed|M0TEK> tray*
[21:24] <ed|M0TEK> it's been distributed
[21:25] <SpikeUK_> Well deserved to!
[21:25] <ed|M0TEK> http://www.flickr.com/photos/25036435@N00/3732466903/
[21:25] <ed|M0TEK> m6jcx (jcoxon) in startled mode
[21:25] <RocketBoy> rharrison|2e0rjh: why isn't my DL logging any data?
[21:26] <ed|M0TEK> we're currently using that yagi to track from this end, waiting for it to swing back to the main room
[21:26] <rharrison|2e0rjh> http://www.robertharrison.org/listen/time.png
[21:27] <sbasuita> ed|M0TEK, loving the tapage to the window frame
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[21:28] <ed|M0TEK> it's especially tuned gaffa tape
[21:28] <ed|M0TEK> gives you an extra couple dBs on the front-to-back ratio
[21:31] <sbasuita> Is this thing expected to head back southwest at any time?
[21:31] <ed|M0TEK> sbasuita: almost due west
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[21:38] <jcoxon> just as a warning the morse code beacon is about to eat the rtty
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[21:39] <rharrison|2e0rjh> lost signal here
[21:39] <sbasuita> no longer decoding...
[21:40] <rharrison|2e0rjh> http://www.robertharrison.org/listen/time.png
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[21:41] <simonvc> Yo
[21:41] <sbasuita> simonvc, ello
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[21:42] <ed|M0TEK> hi simonvc
[21:43] <ed|M0TEK> 24km, holding at about 2m/s
[21:43] <simonvc> Where's the link to the tracker link?
[21:43] <rharrison|2e0rjh> seems quite konstant in the assent rate
[21:43] <ed|M0TEK> spacenear.us/tracker
[21:43] <simonvc> ta
[21:43] <simonvc> i'll push the pics/vid up tonight
[21:43] <ed|M0TEK> ]there's some noisy data in there (sanity checker is off) but you get the idea
[21:45] <simonvc> Where's it actually at?
[21:45] <simonvc> its hard to tell from the map
[21:49] <sbasuita> simonvc, heading west over reapham
[21:49] <sbasuita> reepham, sorry
[21:50] <simonvc> Nice so its coming back west a bit.
[21:52] <sbasuita> decoding again :)
[21:52] <sbasuita> though still not a single complete string
[21:52] <rharrison|2e0rjh> http://www.robertharrison.org/listen/time.png
[21:53] <rharrison|2e0rjh> I think I can see the first deflection in the line
[21:53] <simonvc> ok, later.
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[22:04] <jcoxon> hey
[22:05] <sbasuita> allo
[22:05] <SpikeUK_> Yup
[22:05] <SpeedEvil> Is that floating?
[22:05] <jcoxon> its up to something
[22:05] <jcoxon> not sure if its floating but its scheming
[22:06] <SpeedEvil> well - ish
[22:06] <SpeedEvil> :)
[22:08] <SpeedEvil> skyhook deployed.
[22:08] <ed|M0TEK> pizza ordered
[22:12] <SpeedEvil> groundspeed 10mph or so?
[22:15] <ed|M0TEK> sounds fair
[22:15] <SpeedEvil> following predictions?
[22:17] <ed|M0TEK> more or less
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[22:20] <jcoxon> we are at float...
[22:21] <SpikeUK_> Well done!
[22:22] <ed|M0TEK> I'm a bit suprised this has worked, I must say. :)
[22:22] <DanielRichman> Nice!
[22:22] <ed|M0TEK> or rather, *seems* to be working
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[22:23] <SpikeUK_> jcoxon what are you using for cut-down?
[22:24] <ed|M0TEK> there's no cutdown
[22:24] <ed|M0TEK> but there is cutdown logic - i.e. the balloon will say if it would cutdown
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[22:24] <rharrison|2e0rjh> Good news http://www.robertharrison.org/listen/time.png
[22:25] <ed|M0TEK> we were sufficiently unsure of this floating equilibrium to in terms of small vertical rates about 0 that we didn't want to make too stringent the rules on cutdown, and in the end just decided to leave it off
[22:26] <SpikeUK_> Oh. So it will just stay up there then?
[22:26] <rharrison|2e0rjh> well done guys
[22:27] <rharrison|2e0rjh> Looks like you are in for a long night tonight
[22:27] <ed|M0TEK> SpikeUK: it will drop eventually
[22:27] <ed|M0TEK> sunrise will heat the gas up, it'll start to rise, then it'll vent more He and fall
[22:27] <rharrison|2e0rjh> If i was to take a stab hit ground at 06:34 tomorrow
[22:28] <ed|M0TEK> also, helium escaped through the envope itself - it's slight porous and Hemolecules are small
[22:28] <SpeedEvil> I'm unsure
[22:29] <SpeedEvil> I thought increased diameter = reduced differential pressure, and reduced absolute density of gas.
[22:29] <SpeedEvil> This leads to a slowing of flow.
[22:35] <ed|M0TEK> we'll see what happens then :)
[22:36] <sbasuita> What's the predicted trajectory?
[22:36] <SpikeUK_> Ta for explanation!
[22:43] <jcoxon> hehe its really floating
[22:43] <SpikeUK_> Sure looks that way!
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[22:45] <Daviey> Oh dear.. looking probable it might be in the North Sea come morning :(
[22:46] <Daviey> suprising amount of bad results.. any idea what is causing this?
[22:47] <jcoxon> yeah bad data getting through unfortunately
[22:48] <Daviey> must be the GPS module?
[22:49] <SpeedEvil> radio corruption also is common
[22:50] <Daviey> oh hang on.. The Communication Protocol doesn't use checksum?
[22:50] <SpeedEvil> Well - ...
[22:50] <SpeedEvil> not really
[22:50] <SpeedEvil> for a number of reasons.
[22:51] <SpeedEvil> The communications protocol is basically straight out of 1960.
[22:51] <SpeedEvil> And could really do with an overhaul in some ways - but in other ways it's really simple to implement
[22:51] <Daviey> Well <CUSTOM DATA> could be a checksum, no?
[22:51] <SpeedEvil> and usually the error checking works better than this
[22:51] <SpeedEvil> yes
[22:51] <SpeedEvil> plz code.
[22:51] <Daviey> Generating a simple checksum wouldn't be too difficult or intensive, surely?
[22:52] <SpeedEvil> problem is that it doesn't do much.
[22:52] <SpeedEvil> What you really want is FEC
[22:52] <Daviey> well yes.
[22:52] <SpeedEvil> and that means that you can't use fldigi in its current mode, as it is processing the chars as RS232
[22:52] <Daviey> That would be neat..
[22:52] <SpeedEvil> So one bit error wipes out up to two chars
[22:52] <SpeedEvil> possibly more
[22:53] <SpeedEvil> But to do FEC sanely, you need every bit to be sampled - but fldigi throws away bits with invalid RS232 framing
[22:53] <SpeedEvil> That, and it's mostly worked in the past, and it's a fair amount of hastle to do it 'right'.
[22:54] <Daviey> Is the payload running a DIY Ardunio?
[22:54] <SpeedEvil> something like that
[22:54] <SpeedEvil> I don't know exactly what processor it is, it's an AVR of some sort.
[22:55] <SpeedEvil> http://www.flickr.com/photos/jcoxon77/3662681108/in/set-72157621083447545/
[22:55] <Daviey> Yeah, been looking :)
[22:55] <SpeedEvil> that is the processor in question (I believe the one flying)
[22:56] <SpeedEvil> and it's an atmega apparantly.
[22:56] <SpeedEvil> radio in the front, regulator to the right
[22:57] Action: Daviey re-reads jcoxon's email, and notes it is indeed an Arduino.. Didn't realise it was a DIY one board jobby
[22:57] <Daviey> Any idea how much the Radiometrix NTX2 and Ublox were?
[22:58] <SpeedEvil> on the order of 20 quid each
[22:58] <SpeedEvil> 20-30
[22:58] <rharrison|2e0rjh> 25
[22:58] <SpeedEvil> rharrison|2e0rjh: you need to reupload that image with its current geotags :)
[22:58] <rharrison|2e0rjh> ok
[22:59] <rharrison|2e0rjh> Hey guys your are floating nicely http://www.robertharrison.org/listen/time.png
[22:59] <rharrison|2e0rjh> Nice one master coxon
[23:00] <SpeedEvil> :)
[23:00] <SpeedEvil> I assume the right axis means nothing?
[23:01] <rharrison|2e0rjh> SpeedEvil: You assume correctly
[23:01] <Daviey> it's nice to see it also seems to be heading back inland-ish
[23:01] <rharrison|2e0rjh> That is for the more advanced payloads that have temp sensors :)
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[23:02] <ed|M0TEK> Daviey: that was always the plan
[23:02] <ed|M0TEK> get it to float above ~20km where the winds take it back west
[23:02] <SpeedEvil> rharrison|2e0rjh: can you plot the rise rate?
[23:02] <SpeedEvil> rharrison|2e0rjh: it looks damn near constant till 24kmish
[23:02] <SpeedEvil> maybe 26
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[23:04] <rharrison|2e0rjh> I agree
[23:04] <rharrison|2e0rjh> I caught it turning at about 25
[23:04] <rharrison|2e0rjh> See previouse
[23:05] <rharrison|2e0rjh> If it's near me I'll collect and post tomoorow if you wnat jcoxon
[23:06] <jcoxon> yay
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[23:09] <Daviey> SpeedEvil: What about a really simple, converting it to a float and providing a sum.. that would be quite simple, and reasonably sane?
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[23:09] <SpeedEvil> Daviey: If you just want checksum, look at NMEA
[23:09] <SpeedEvil> that works OK
[23:10] <Daviey> oh
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[23:13] Action: SpeedEvil votes for america by the end of the month.
[23:15] <SpeedEvil> Daviey: raw data as recieved http://www.robertharrison.org/listen/view.php
[23:17] <SpeedEvil> distributed awesome.
[23:17] <Daviey> SpeedEvil: if it "Sentence failed probability check!
[23:17] <Daviey> " is it still shown in the google maps mash up?
[23:18] <SpeedEvil> There is a simple verifier that is suposed to find bogons in the data.
[23:18] <jcoxon> rharrison|2e0rjh, you around?
[23:18] <ed|M0TEK> i don't think it's on atm
[23:18] <SpeedEvil> I think it's been turned off somewhat thogh
[23:18] <SpeedEvil> as it can block good data too
[23:19] Action: Daviey notes other callsigns :)
[23:21] <Daviey> I'm seriously impressed with how stable the float is
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[23:22] <ms7821> omg it's floating!
[23:22] <Daviey> seems to be an average variance of +-100m's!
[23:22] <jcoxon> hey ms7821
[23:22] <jcoxon> yeah we got it floating :-)
[23:22] <jcoxon> Daviey, my callsign is M6JCX (but i never use it :-D )
[23:22] <ms7821> \o/
[23:23] <Daviey> jcoxon: Is that your HAM callsign?
[23:23] <jcoxon> yes
[23:24] <rharrison|2e0rjh> right you ready for the next graph
[23:24] <jcoxon> yup
[23:24] <SpeedEvil> No!
[23:24] <SpeedEvil> :)
[23:24] <ms7821> sweet
[23:25] <jcoxon> so we are very slightly dropping
[23:25] <jcoxon> 1hr 3min of float
[23:25] <rharrison|2e0rjh> http://www.robertharrison.org/listen/time.png
[23:26] <rharrison|2e0rjh> jcoxon You must be pleased
[23:26] <rharrison|2e0rjh> You all staying up to track>
[23:26] <Daviey> jcoxon: Is there a pre-planned cut down?
[23:26] <jcoxon> yeah i'm happy, though suprised it worked and worried where it might go!
[23:26] <rharrison|2e0rjh> lol the usual HAB fears
[23:26] <jcoxon> Daviey, ummmm we took off the cutdown :-) due to the number of uncertainities in the flight felt it wasn't worth hte risk
[23:27] <rharrison|2e0rjh> BTW can you see the shrink i the shift
[23:27] <rharrison|2e0rjh> in
[23:27] <Daviey> jcoxon: All set to drive to Nottingham to find it? :)
[23:27] <ed|M0TEK> i'm running on 250 shift now
[23:27] <jcoxon> rharrison|2e0rjh, yes i can see it :-)
[23:27] <jcoxon> point made, hehe
[23:27] <rharrison|2e0rjh> hehe
[23:28] <rharrison|2e0rjh> If it get to notts I can collect
[23:28] <rharrison|2e0rjh> 1hr 4 me
[23:28] <jcoxon> http://www.flickr.com/photos/jcoxon77/3733551112/
[23:28] <rharrison|2e0rjh> up to you
[23:28] <jcoxon> hysplit forecast of next 24 hrs
[23:28] <jcoxon> ummm i'm not really setup to chase
[23:29] <jcoxon> still got quite a few hours before need to worry i suspect
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[23:29] <rharrison|2e0rjh> 20k and it will be in my garden
[23:29] Professor (i=ident_is@x-division.com) joined #highaltitude.
[23:29] <Professor> g'day all
[23:29] <jcoxon> hey Professor
[23:29] <rharrison|2e0rjh> Lets see how it goes
[23:29] <SpeedEvil> Hey!
[23:29] <rharrison|2e0rjh> Back to guests
[23:29] <SpeedEvil> At 15000m - it might actually reach me!
[23:30] <rharrison|2e0rjh> i'll be back in an hour for a new graph
[23:30] <Professor> ouch, really noisy data
[23:30] <jcoxon> Professor, yeah - sorry about that
[23:31] <ed|M0TEK> we've got much better copy on it now
[23:31] <Professor> I don't mind - I'm not the oen that has to find it ;)
[23:31] <Daviey> Sounds like jcoxon was so certain that it was High risk of it being lost, he wasn't going to bother chasing it :)
[23:31] <SpeedEvil> The raw data is at http://www.robertharrison.org/listen/view.php - if you look at the individual data - a silly thing that just looked for bit flips and took a majority would work
[23:31] <SpeedEvil> to a fair degree
[23:31] <RocketBoy> humm there is an increaasingly frequent No GPS data
[23:32] <SpeedEvil> Professor: less it goes _really_ far
[23:32] <ed|M0TEK> RocketBoy: it's being noted here
[23:32] <ed|M0TEK> and larger gaps between packets
[23:32] <Professor> we've got an FAA advisory here in the states in California for a GPS blackout for roughly 340 nautical miles diameter circle
[23:33] <Professor> somebody fired up a jammero r something
[23:33] <Daviey> crikey
[23:33] <ms7821> really?
[23:33] <Professor> yah
[23:33] <ms7821> not more likely the aged satellites are finally dying?
[23:33] <ed|M0TEK> 3 'NO GPS DATA' in a row...
[23:33] <Daviey> linky? )
[23:33] <ed|M0TEK> hrm. hypotheses gents
[23:33] <Professor> looking
[23:33] <Professor> it's effecting my roommate's work out there
[23:33] <Professor> former roommate anyway
[23:34] <ms7821> they're already like 2 years overdue for replacement
[23:34] <ed|M0TEK> maybe temperature has got it
[23:34] <Professor> http://www.mouser.org/log/archives/2009/07/001402.html That's his website
[23:34] <Professor> it has the advisory
[23:34] <ed|M0TEK> 6 gps-less strings in a row
[23:34] <ed|M0TEK> phew
[23:35] <ed|M0TEK> got a lock
[23:35] <Professor> oops, here's the right link: http://www.mouser.org/log/archives/2009/07/001402.html
[23:35] <Professor> http://www.mouser.org/log/archives/2009/07/001401.html
[23:35] <Professor> jeebus, I'm tired or something.
[23:35] <SpeedEvil> where is the 'no GPS' field in the raw data?
[23:36] <ed|M0TEK> it doesn't upload them
[23:36] <ed|M0TEK> you need a radio and fldigi to see everything
[23:36] <SpeedEvil> Ah.
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[23:36] <SpeedEvil> And a balloon mounted yagi
[23:36] <SpeedEvil> Or do I have LOS - don't think so. /me checks.
[23:40] <Daviey> Was the a reason 18:00 was picked for launch out of interest?
[23:40] <jcoxon> Daviey, yeah
[23:41] <jcoxon> basically sunset allows it to float
[23:41] <jcoxon> so we wanted to get it up there before hand
[23:41] <ed|M0TEK> Daviey: the time + fill combination was picked such that it got to a desired altitude just before sunset
[23:41] <Daviey> suspected it might be something like that :)
[23:41] <ed|M0TEK> and it got to that altitude with a sufficiently small fill that there'd be time for enough helium to escape to make it neutrally bouyant
[23:42] <ed|M0TEK> if you put to much in it goes up sufficiently fast that you don't have enough to to vent enough helium before burst
[23:42] <ed|M0TEK> what happened yesterday
[23:43] <Daviey> Also, how was the size of the vent hole calculated to guage a float altitude.. or was it pot luck? :)
[23:43] <ed|M0TEK> based on a similar experiment by wb8elk
[23:43] <rharrison|2e0rjh> jcoxon some one posted about 93% power saving libs for arduino
[23:43] <Daviey> i see!
[23:43] <rharrison|2e0rjh> See logs from 2 days ago
[23:43] <rharrison|2e0rjh> if interested
[23:44] <jcoxon> rharrison|2e0rjh, the morse beacon is using powersaving
[23:44] <jcoxon> it goes into powersaving mode
[23:45] <rharrison|2e0rjh> http://www.robertharrison.org/listen/time.png
[23:45] <rharrison|2e0rjh> jcoxon cool
[23:45] <rharrison|2e0rjh> Floating like a cloud ...
[23:46] <rharrison|2e0rjh> im sticking to impact 06:34
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[23:47] <jcoxon> urgh lots of No GPS
[23:48] <Rob___> Impressive stuff -but I need to sleep. I'll be up in time for the 06:34 landing! Best of luck from Twickenham.
[23:48] <jcoxon> thanks Rob___
[23:49] <ed|M0TEK> 8 no-locks in a row
[23:50] <ed|M0TEK> 10 in a row
[23:50] Action: RocketBoy begins to sweat
[23:50] <Daviey> Has the payload got a "if found etc" message?
[23:50] <ed|M0TEK> Daviey: http://www.flickr.com/photos/jcoxon77/3730472252/
[23:51] <ed|M0TEK> 15 in a row
[23:51] <Daviey> ah missed that pic :)
[23:52] <rharrison|2e0rjh> humm
[23:52] <rharrison|2e0rjh> The signal is getting alot better here shame about the gps
[23:52] <jcoxon> it must be very cold
[23:52] <Daviey> i'd be so tempted to chase people with one of the met balloons L)
[23:52] <Daviey> Prisoner style.
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[23:53] <ed|M0TEK> :)
[23:53] <ed|M0TEK> thi isn't looking too hot
[23:53] <Daviey> no beacon, or no GPS?
[23:53] <ed|M0TEK> no gps
[23:53] <ed|M0TEK> we can hear it loud and clear
[23:54] <Daviey> That is too conerning surely.. it just needs to get another lock..
[23:54] <Daviey> no beacon would be worse :)
[23:54] <jcoxon> Daviey, we also have a backup CW beacon
[23:55] <ed|M0TEK> coming up on 10 minutes without lock
[23:55] <jcoxon> though that doesn't give us any data as such
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[23:55] <ms7821> surely you can triangulate on the CW
[23:55] <jcoxon> hey natrium42
[23:55] <natrium42> yo
[23:55] <jcoxon> ms7821, yes but thats a lot easier when you are close
[23:55] <natrium42> i got the email
[23:56] <natrium42> what's happening?
[23:56] <jcoxon> 1hr 30mins
[23:56] Action: Daviey forgets the idea of going to bed tonight.
[23:56] <jcoxon> we've been floating
[23:56] <jcoxon> though for the past 10mins we've lost gps lock
[23:56] <ed|M0TEK> RocketBoy: just found the morse beacon
[23:57] <ed|M0TEK> it/s on .050
[23:57] <natrium42> yay
[23:57] <ed|M0TEK> i.e. it's drifted 25khz
[23:57] <natrium42> still got signal?
[23:57] <ed|M0TEK> that poor oscillator is lost
[23:57] <RocketBoy> wow
[23:57] <jcoxon> natrium42, is there any chance you could tell us how we could clean up spacenear.us?
[23:58] <RocketBoy> I just checked GPS is working - lotsa sats in view - quick lock on my garmin
[23:58] <ed|M0TEK> yeah thanks for that steve
[23:58] <natrium42> jcoxon: through cpanel and then myphpadmin
[23:58] <ed|M0TEK> we were sure that since our kit was so reliable, it was probably the gps constellation that was down
[23:58] <natrium42> do you still know the password?
[23:58] <Daviey> cpanel :(
[23:59] Action: natrium42 has just arrived in hotel in milan
[23:59] <ed|M0TEK> natrium42: i'm afraid I massacred the kml live tracking file a bit to get it not to display 'dots' for each point
[00:00] --- Sun Jul 19 2009