highaltitude.log.20130304

[00:00] <fsphil> oh noes, it's Monday
[00:00] <jcoxon> fsphil, isnt it your shift now
[00:00] <jcoxon> you signed up for monday
[00:00] <daveake> Damn persistent day of the week
[00:00] <fsphil> monday morning :)
[00:00] <Geoff-G8DHE> PICO flight http://360.g8dhe.net/HAB_Flights/PICO/PICO_19.jpg
[00:00] <daveake> it's morning
[00:01] <NigeyS> just me and you dave :o
[00:01] <fsphil> it's a long way from me yet sadly
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[00:01] <daveake> Struggling here it'll be just you soon
[00:01] <RocketBoy> so to melt 1g of parafin wax going from -30 to +70C you need 520J (300 to raise the temperaure 220 to melt it)
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[00:02] <RocketBoy> a AA battery at 1.5V and 3000mAH has 16,200J in it
[00:02] <NigeyS> chasing it a bit here, if it drops below 1km i have no chance, especially with those hills in the way !
[00:03] <jcoxon> NigeyS, appreciate anything you can get
[00:03] <RocketBoy> so 3% of the battery
[00:04] <jcoxon> 1.4 hours of battery life
[00:04] <NigeyS> there we go back to 21db now
[00:04] <NigeyS> np james :)
[00:04] <jcoxon> assuming 48 hours of total life
[00:04] <mfa298> oh wow, looks like im still getting the odd packet (m1ari) although i doubt i will for long
[00:04] <jcoxon> mfa298, yeah i saw that
[00:04] <jcoxon> good work
[00:04] <mattbrejza> you should totaly smear your payload with butter instead
[00:04] <Randomskk> mmmmm
[00:04] <lz1dev> slowest landing ever
[00:06] <mfa298> I've just left the radio to do its thing as I've got to have the window open to get data
[00:06] <mfa298> we need stratodean to be listening
[00:07] <Geoff-G8DHE> PICO flight http://360.g8dhe.net/HAB_Flights/PICO/PICO_20.jpg well its over that ridge of hills
[00:11] <NigeyS> arm is slowly going dead!
[00:12] <jcoxon> NigeyS, blue tac!
[00:12] <NigeyS> felt the weight of a 790? lol
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[00:13] <mfa298> still seems to be a reasonably strong signal here
[00:13] <daveake> nice here again now
[00:13] <daveake> earlier couldn't even see it
[00:13] <NigeyS> its the mountains by ponty, ,kills my signal
[00:13] <mfa298> abour 20db s/n on the waterfall and nothing else to get in the way
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[00:15] <mfa298> althoguh the 0degree horizon cant decide if i should be inside or outside now
[00:16] <jcoxon> it just won't die
[00:16] <Geoff-G8DHE> Night all, have fun!
[00:17] <jcoxon> night
[00:20] <mfa298> I appear to be into partials now
[00:20] <NigeyS> snap
[00:20] <NigeyS> missing just 1 or 2 digits on every line :/
[00:20] <mfa298> $$$$PICO,7438,00:20:09,517956195,-771!539,1316,7,6,1,3*EC38
[00:20] <mfa298> $$$$PICO,7439,00:20:25,517965294,-27716002,134,7,6,1,3*21E
[00:21] <mfa298> got a good one
[00:21] <NigeyS> $$$$PICO,7437,00:19:53,517947064,-27709115,1323,8,6,1,3*E000
[00:21] <NigeyS> my last good 1
[00:21] <mfa298> and I'm not a few miles outside the 0degree horizon :D
[00:21] <mfa298> s/not/now/
[00:21] <Darkside> haha just saw picotex's altitude plot
[00:21] <NigeyS> heh getting good signal again now, its them dam mountains!!
[00:21] <Darkside> someone used a int16 :P
[00:22] <daveake> The old ones are the best ones
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[00:30] <NigeyS> whos making the coffee then?
[00:30] <jcoxon> i was about to announce that i was going to bed
[00:30] <jcoxon> i've got to go to work in 6 hours
[00:30] <NigeyS> lol oops
[00:31] <NigeyS> my signals 18db again now
[00:31] <daveake> I've just made hot chocolate
[00:31] <daveake> with cream
[00:31] <jcoxon> i'm really sorry to abandon you all!
[00:31] <mfa298> I think I've pretty much lost it now
[00:31] <jcoxon> i really appreciate your work in tracking this damn thing
[00:31] <NigeyS> no probs james
[00:31] <daveake> get some sleep :)
[00:32] <NigeyS> wow signals getting super strong :|
[00:32] <jcoxon> we;ve beaten PBH-8
[00:32] <daveake> well done!
[00:32] <jcoxon> so in theory are 6th
[00:32] <daveake> plus mooned France
[00:32] <mfa298> nice one
[00:32] <jcoxon> (but i didn;t submit in advance so its not real
[00:32] <daveake> That has to be worth something
[00:32] <Darkside> oh god
[00:32] <Darkside> i just saw the track
[00:32] <Darkside> hahahah
[00:33] <Darkside> excellent!
[00:33] <jcoxon> night all
[00:33] <daveake> nn
[00:33] <jcoxon> maybe it'll make it too the morning
[00:33] <jcoxon> if it does!
[00:33] <jcoxon> could someone reply to my email to ask people to listen in the morning just in case it refloats...
[00:33] <jcoxon> night
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[00:34] <mfa298> the image it's drawn reminds me of http://www.youtube.com/watch?v=FWBUl7oT9sA
[00:34] <daveake> lol
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[00:35] <daveake> your mother was a habber and your father smelt of latex
[00:35] <mfa298> lol
[00:35] <NigeyS> :| 22db wth...
[00:35] <daveake> drifts in and out here
[00:36] <Darkside> NigeyS: what antenna are you using?
[00:36] <NigeyS> that whip i have on the 790
[00:36] <Darkside> lol
[00:36] <mfa298> if we have more of these I might have to get a hab amp, I can still hear the rtty but no decode
[00:36] <Darkside> its probably going into its radiationpattern
[00:36] <NigeyS> must be
[00:36] <Darkside> maybe try an dplot SNR vs elevation
[00:36] <NigeyS> oo
[00:37] <Darkside> see if you can get a vertical radiation profile for your antenna
[00:37] <NigeyS> will do definately
[00:38] <mfa298> damn, when I thought i was down to gibberish I've had some almost complete sentences
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[00:45] <daveake> like me after a few shandies
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[00:46] <mfa298> last decent sentence i had puts it at 87miles according to google earth, now I need to see if I can get a profile to show if it was over the horizon or not
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[00:51] <NigeyS> my arm hurts now :/
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[00:54] <SpeedEvil> I am reminded of the guy at 0:20
[00:54] <SpeedEvil> http://www.dailymotion.com/TwisterNederland#from=embediframe
[00:56] <SpeedEvil> though 11:10 is actually on topic
[00:58] <Darkside> NigeyS: isn't it time to get in a car?
[00:58] <Darkside> >_>
[00:58] <daveake> :)
[00:58] <NigeyS> well for 1 i dont drive, and 2, its 1am! lol
[00:59] <Darkside> bah
[01:02] <NigeyS> lost it
[01:02] <daveake> Lift your arm back up again :)
[01:02] <daveake> Slacker!
[01:02] <daveake> Nothing here
[01:02] <NigeyS> lol i am
[01:06] <NigeyS> definately gone, last line was $$PICO,7571,00:57:07,51915266,-28846836,1095,7,6,1,3*E701
[01:07] <daveake> I've got faint lines back again, but not decoding
[01:07] <NigeyS> dial ?
[01:07] <daveake> Not changed 343350
[01:08] <daveake> er
[01:08] <daveake> 434350
[01:09] <NigeyS> nada :(
[01:10] <daveake> Just too faint http://i.imgur.com/Y6nFgCc.png
[01:11] <NigeyS> ach thats what it was like for me for most of the day, :(
[01:11] <NigeyS> could see it, just about hear it, but nada decodes
[01:11] <mfa298> thats what I had for a while and then it came back
[01:12] <daveake> same here, but even that's gone now
[01:12] <mfa298> looking at a fresnel zone calculator I think my last strings were right on the limit, it suggests there was about a 50m clearance between earth and the fresnel zone
[01:13] <NigeyS> :o
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[01:15] <daveake> ah well, not going to be getting any more from here. I'll call it a night
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[01:15] <NigeyS> snap, i need sleep, nn all!
[01:16] <mfa298> agreed on the sleep front
[01:16] <mfa298> night
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[01:27] Action: SpeedEvil got a teeny bit into a calculator to run fresnel zone range calcs off the shuttle topology data.
[01:27] <Darkside> haha
[01:28] <NigelMoby> darkside can you do me a favour?
[01:28] <Darkside> depends
[01:28] <NigelMoby> spacenear won't load on this..
[01:28] <Darkside> want the bearing to the balloon?
[01:28] <NigelMoby> what's the name of the nearest town to pico?
[01:28] <Darkside> hold on
[01:28] <NigelMoby> tnx
[01:29] <Darkside> wow it takes ages to load up
[01:29] <NigelMoby> 50000 data points lol
[01:29] <Darkside> haha chrome thinks the page is unresponsive
[01:29] <Darkside> there we go
[01:29] <Darkside> ontrilas
[01:29] <Darkside> whoops
[01:29] <Darkside> Pontrilas
[01:30] <Darkside> on the A465
[01:30] <NigelMoby> yup, brill cheers dude
[01:30] <Darkside> going to try and recover it?
[01:31] <NigelMoby> looks possible but it'll be tomorrow afternoon by the time I can get there
[01:33] <Darkside> ah
[01:34] <NigelMoby> right, sleep, Nn!
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[02:03] <griffonbot> @ProjectBlast: A selection of photos taken during this weekends launch http://t.co/Gu0PsaLikx #UKHAS http://t.co/ctoWjcPXao [http://twitter.com/ProjectBlast/status/308397315864002560]
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[03:45] <griffonbot> Received email: "ReĀ : [UKHAS] Pico IX"
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[06:35] <Upu_M0UPU> morning
[06:35] <Darkside> hey
[06:35] <Upu_M0UPU> nothing hear
[06:35] <Upu_M0UPU> heard
[06:35] <Upu_M0UPU> just done a sweep
[06:36] <Darkside> probably down
[06:36] <Upu_M0UPU> yep
[06:36] <arko_> morning
[06:36] Nick change: arko_ -> arko
[06:37] <Upu_M0UPU> morning
[06:37] <Upu_M0UPU> http://ready.arl.noaa.gov/hysplitout/153_trj001.gif
[06:37] <Upu_M0UPU> high chance in the sea
[06:37] <arko> aww
[06:37] <arko> lame
[06:38] <arko> is big launch day today?
[06:39] <Upu_M0UPU> lol no been all weekend
[06:39] <Upu_M0UPU> over now
[06:39] <arko> damn
[06:40] <arko> that would have been fun to observe
[06:40] <arko> i was in SF this weekend for bbq and fun times
[06:40] <Upu_M0UPU> 5 launches ?
[06:40] <Upu_M0UPU> I've lost track
[06:40] <arko> wow
[06:40] <arko> how many of them ended up in water?
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[06:42] <Upu_M0UPU> none to our knowledge
[06:42] <Upu_M0UPU> morning jcoxon
[06:42] <Upu_M0UPU> nothing heard up here
[06:42] <Upu_M0UPU> http://ready.arl.noaa.gov/hysplitout/153_trj001.gif
[06:43] <jcoxon> oh well
[06:43] <jcoxon> what happened at the end?
[06:43] <jcoxon> looks like an extra point?
[06:44] <Upu_M0UPU> not sure
[06:44] <Upu_M0UPU> lz1dev seemed to do it
[06:44] <Upu_M0UPU> possibly fixed a duff string ?
[06:46] <Upu_M0UPU> fsphil is probably your best bet if it refloats but could be in the drink
[06:49] <jcoxon> oh well
[06:49] <jcoxon> twas a bit of a sucess i guess :-p
[06:54] <Upu_M0UPU> I would call it that :)
[06:55] <Upu_M0UPU> right work time
[06:55] <costyn> http://www.youtube.com/watch?v=AKNbJCVRXhA#at=45 video highlights from Hyperion on saturday
[06:55] <costyn> (and of course, good morning to all)
[06:56] <x-f> good morning
[06:57] <costyn> it's funny, in the beginning you can clearly hear the photocamera take pictures, but at 35km, it's completely silent. However at burst there are sounds again. It can't be already that there's too little atmosphere to convey sound?
[06:58] <x-f> saw your pics, costyn, nice ones with the gloria and those showing distinct layers of the atmosphere
[06:58] <costyn> x-f: thank
[06:58] <costyn> s
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[06:59] <costyn> x-f: look at the video,check out the plane come by at 5:05. You can hear it quite well. Again at 6:10
[06:59] <costyn> crazy noise to be hearing at 12KM :)
[06:59] <x-f> i'm watching now
[07:00] <costyn> I'm going to have to cut out more I think
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[07:00] <costyn> and add more dark sky at 35K
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[07:38] <fsphil> Nothing heard here
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[08:19] <griffonbot> Received email: Colin XSD "Re: [UKHAS] Can I use this antenna for tx ?"
[08:19] <griffonbot> Received email: Steve Daniels "RE: [UKHAS] PICO Tracking"
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[08:23] <griffonbot> Received email: Anthony Stirk "Re: [UKHAS] Can I use this antenna for tx ?"
[08:31] <griffonbot> Received email: Anthony Stirk "Re: [UKHAS] Tracker Schematic Review"
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[08:36] <griffonbot> Received email: John Underwood "Re: [UKHAS] Launch announcement - Tuesday 5th March - Chalgrove -
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[09:07] <Jess--> any news on pico?
[09:08] <fsphil> no signal received in NI
[09:08] <fsphil> was hoping it would take off again
[09:08] <fsphil> although the wind may have changed, pushing it east
[09:10] <Jess--> heres hoping it can be found
[09:11] <fsphil> recovery wasn't part of the plan I suspect :)
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[09:16] <fsphil> floating these things seems like balancing a spinning plate, any slight deviation and they come down
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[09:45] <griffonbot> Received email: Radim Mutina "Re: [UKHAS] Tracker Schematic Review"
[09:46] <Upu> good spot that
[09:46] <Upu> He's right
[09:46] <griffonbot> Received email: PhilipM "Re: [UKHAS] Tracker Schematic Review"
[09:53] <navrac_home> that is cool
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[09:56] <costyn> x-f: did you watch it?
[09:57] <x-f> costyn, yes
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[09:58] <x-f> costyn, pop was clearly audible, but i think a good part of it was transfered to the camera via stropes holding the payload
[09:58] <costyn> yea
[09:59] <costyn> the sound at burst was mainly the payload being shaked around. because the stills camera can't be heard any more at 35k
[10:01] <x-f> yeah, it's silent there
[10:02] <x-f> however i've seen videos from payloads that have loud beepers - they continue to beep at apex, but very quietly
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[10:03] <costyn> interesting
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[10:09] <Willdude123> Morning.
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[10:16] <fsphil> morrrning
[10:17] <HixWork> reading the link on the secret arduino vcc measurement http://goo.gl/ODfxT
[10:17] <HixWork> the delay of 2 seconds in the function, would that screw RTTY up? I'm thinking it would
[10:18] <fsphil> you wouldn't do this during the sending of a line
[10:18] <fsphil> if the rtty is delay based
[10:18] <daveake> If you're using delay() to do rtty, then you'd have to do it between sentences
[10:18] <fsphil> though even if you did, it would still work. just be a bit weird
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[10:19] <daveake> If you're using timer interrupts for rtty, then you can do it during a sentence
[10:19] <fsphil> there have been payload with gaps. as long as the stop bit is sent while you delay
[10:19] <fsphil> then fldigi will be happy
[10:19] <fsphil> but it's not good practice
[10:19] <HixWork> that's what i was thinking. I've not delved into interrupts as yet, though have been informed its the correct way
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[10:20] <daveake> I have a word for payloads with long gaps. Annoying. :)
[10:20] <fsphil> I remember one that paused before printing the temperature
[10:20] <fsphil> at the time I had code to fill in gaps with an underscore
[10:20] <daveake> It's ok if the frequency doesn't shift. When it does, grrrr...
[10:21] <HixWork> freq shift is a mare even with short gaps
[10:21] <HixWork> I'll leave that ttechnique alone then i reckon :)
[10:21] <fsphil> one of the nice things about the interrupt rtty, even if there is no data to send it'll still be sending 0x00
[10:21] <fsphil> and fldigi will keep tracking
[10:21] <HixWork> does K&R cover interrupts?
[10:22] <fsphil> it's not part of C
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[10:22] <fsphil> it's a hardware feature more than a language thing
[10:22] <HixWork> ahh, any recommendations for resources?
[10:22] <HixWork> might as well make maiden launch as proper as possible
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[10:24] <number10> I though haveing a short delay ~1s between sentences was OK - give time to adjust frequency without loosing data on a sentence
[10:24] <daveake> yeah it's the long gaps plus drifting
[10:25] <fsphil> or bitrate changes. grr :)
[10:25] <daveake> grrrrrrrrrr
[10:26] Nick change: `rune -> `rune_away
[10:27] <number10> pico was particulaly good this weekend with frequency stability - I may unwrap my pico and glue some polystyrene on the rfm
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[10:28] <Geoff-G8DHE_> Is anyone still able to hear PICO, I assume not ?
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[10:31] <sjohn> Hi, i wanted to know if i can use Spacenear to test my payload?
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[10:34] <fsphil> Geoff-G8DHE_: nah, nothing heard here. if it did take off again, it could be over scotland by now
[10:34] <fsphil> don't think it's likely though
[10:35] <fsphil> sjohn: there are no flights for today I think, shouldn't be a problem
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[10:40] <sjohn> what is the process fsphil to upload my datastring to the spacenear, document terms
[10:41] <fsphil> if your payload transmitting valid strings?
[10:41] <fsphil> as per http://ukhas.org.uk/communication:protocol
[10:42] <fsphil> if yes you need to generate a payload document: http://habitat.habhub.org/genpayload/
[10:43] <Geoff-G8DHE_> Strange to loose it at 1000m unless all Rx stations turned off at that point! Given the way it was progressing. Still a considerable flight 654Km around the UK!
[10:43] <daveake> It was very weak from here, coming and going for a while
[10:43] <sjohn> i see
[10:44] <S_Mark> has the spacenear site crashed? unresponsive for me on ie and chrome
[10:45] <fsphil> it's got a huge amount of data S_Mark, it's working but it may take a few moments more than usual to load
[10:45] <fsphil> loads in about 20 seconds on firefox
[10:45] <S_Mark> alright I'll be more patient lol
[10:46] <S_Mark> here we go, pico lost? Battery do we think?
[10:46] <Darkside> totally needs decimation on the sample data
[10:47] <fsphil> or at least not store the receiver callsign and telemetry for each point
[10:47] <fsphil> load that on demand
[10:48] <fsphil> though if it's the points slowing it down that won't help
[10:48] <lz1dev> there nearly 50000 data points atm
[10:49] <kokey> greetings from cape town
[10:49] <Darkside> cipe tiwn
[10:49] <kokey> as said in a johannesburg accent
[10:49] <kokey> or maybe pretoria
[10:50] <fsphil> Cape City </charlie jade fan>
[10:50] <kokey> can't do much here, most of my parts and tools are at sea at the moment
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[10:51] <kokey> interesting, didn't know about Charlie Jade until now
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[10:56] <fsphil> it suffered a bit from bad writing and low budget, but it had some great moments
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[11:00] <kokey> watched Chronicle the other day and parts of Seattle looked familiar, and realised it's Cape Town
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[11:01] <kokey> the game of throwns guys are busy shooting a new pirates series nearby the city, so you can see the pirate ships and some palm trees from the motorway
[11:02] <kokey> there's a TV ad in the UK at the moment of a cloud traveling through a city, that's Johannesburg
[11:02] <kokey> oh it's the Guinness ad I think
[11:02] <Darkside> with the big apartment tower?
[11:02] <Darkside> the cylinder
[11:02] <Darkside> aka clouc city
[11:02] <Darkside> cloud*
[11:03] <kokey> oh, the ponte building I suppose
[11:04] <fsphil> they film some parts of thrones not far from here
[11:04] <kokey> oh true most of it's in ireland
[11:04] <kokey> and some in morocco
[11:04] <fsphil> I know the iron throne is here
[11:06] <fsphil> shame they don't allow random visitors onto set :)
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[11:10] <HixWork> aha, interrupt info, linked from Upu's blog http://goo.gl/jbLw5, good work Upu
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[11:10] <HixWork> Thiis being Upu's page on it http://goo.gl/K1bsY
[11:10] Nick change: G0DJA_ -> G0DJA
[11:14] <gonzo_> I have this mental image now, of a film about toilets
[11:15] <fsphil> hah
[11:15] <fsphil> winter is flushing
[11:15] <HixWork> just think trainspotting gonzo_
[11:15] <gonzo_> that is the seat of the problem
[11:16] <HixWork> the quality of puns on here is very loo
[11:16] <kokey> I think I'm going to have to fly my modules as is
[11:16] Action: fsphil sits this one out
[11:16] <kokey> I thought of buying modules etc. without header pins but ordering stuff to south africa is a pain with theft and customs
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[11:17] <gonzo_> pft, have ypou washed your hands of it?
[11:17] <kokey> I think I'll just get some strip board and solder mine in, like I did on the breadboard
[11:17] <kokey> at least until I go past the UK again in June
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[11:18] <gonzo_> unles you can get someone to forward stuff on to you
[11:20] <kokey> will have to find balloons locally
[11:22] <kokey> what are the brands, totex and?
[11:25] <HixWork> kokey http://goo.gl/mwSwX is a list of std balloons
[11:26] <cuddykid> hexacopter frame arrived :D
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[11:29] <griffonbot> @TurinTurambar90: RT @ProjectBlast: A selection of photos taken during this weekends launch http://t.co/Gu0PsaLikx #UKHAS http://t.co/ctoWjcPXao [http://twitter.com/TurinTurambar90/status/308539685234429952]
[11:33] <Babs> Colleague who sits next to me and witnesses me getting parachutes, chips, polystyrene etc. on a more or less daily basis not understanding what the hell a HAB is stumbled upon the Project Blast guys at the weekend. Random.
[11:34] <Babs> Although she told me they had a "balloon and what looked like a gun" so I'm not sure she is really any the wiser about what is going on despite having been at a live launch.
[11:34] <craag> Babs: There was a lot of time at the launch site when we weren't launching. But I can't remember anyone having a gun :/
[11:36] <craag> Maybe the helium tank looked like a cannon? It was on a set of wheels.
[11:39] <gonzo_> unless cannon is the new must-have took for HAB retrieval?
[11:40] <fsphil> or launch
[11:41] <Babs> She's not that technical. The "gun" could have been an exhaust pipe of a Ford Focus for all she would have known.
[11:41] <craag> Lol. With 3.5kg? of neck lift and 135g payload it was nearly a cannon launch!
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[11:42] <costyn> craag: holy crap... 3.5
[11:42] <costyn> I had 2kg on 750g
[11:43] <craag> I think it was that. The payload was supposed to be about 2.7kg, but we didn't fly sharp/blast at all in the end, just our two backup trackers.
[11:43] <costyn> ah ok
[11:43] <Babs> A working ground-based rail-gun method of remotely cutting down a balloon is definitely overdue. http://en.wikipedia.org/wiki/Railgun
[11:43] <fsphil> HEADSHOT
[11:44] <costyn> Babs: good luck getting CAA approval on that
[11:44] <M0NSA> i just watched the Hyperion video - really looked like confetti after burst!
[11:45] <gonzo_> craag, I assume you only had big arsed balloons avail, so could not go for a smaller envenope?
[11:45] <costyn> M0NSA: cool :) there was nothing left of it when it landed except about 1 inch from the neck
[11:45] <costyn> it had wrapped itself around the parachute lines (again)
[11:45] <craag> gonzo_: The balloon had been inflated 3 hours before we decided not to fly sharp/blast..
[11:45] <costyn> had about 10m of line between parachute and balloon, but I guess I need more?
[11:45] <M0NSA> heh, i really must get along to a launch at some point...
[11:46] <gonzo_> craag, best laid plans etc....
[11:46] <craag> mm
[11:46] <craag> M0NSA: I could do with a navigator next time :P
[11:46] <M0NSA> for the chase?
[11:46] <craag> mm
[11:47] <M0NSA> you navigate, i'll drive :P your car is too small for me!
[11:47] <craag> true
[11:47] <costyn> yep... having a good driver is worth a lot
[11:47] <fsphil> very much so
[11:47] <M0NSA> and you don't have a sunroof for poking my head out of if i recall
[11:47] <HixWork> costyn, having a suitable car is also
[11:47] Action: HixWork wonders what he's gonna do at launch
[11:47] <costyn> HixWork: yep.. we had an 1.6T Astra tuned to 247bhp
[11:48] <craag> M0NSA: If I had a sunroof, there'd be no roof space for antennas!
[11:48] <gonzo_> lots of dash space for all the screens
[11:48] <fsphil> [ totally OT, but I love that they pixelated both mens faces: http://www.bbc.co.uk/news/uk-england-leeds-21654930 ]
[11:48] <costyn> craag: just use the bonnet
[11:48] <costyn> :)
[11:48] <M0NSA> my car has lots of space for antennas :)
[11:49] <craag> Btw, just wondering, what's the smallest H2 cylinder that you can get in the UK? (probably fom boc)
[11:49] <M0NSA> fsphil, lol - just a shame he is wearing the old costume...
[11:49] <HixWork> I don't even hava anywhere to put a cylinder in mine....
[11:50] <M0NSA> craag, if you have any excess, i al sure i can find a use for it ;)
[11:50] <fsphil> the middle sized Helium cylinder just fits nicely in my boot
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[11:50] <fsphil> but a clio is definitely not a good car for chasing
[11:51] <HixWork> fsphil, for scale http://goo.gl/VUlXP :/
[11:51] <M0NSA> pffft, tiny car!
[11:52] <craag> wow, smaller than mine (altho probably more powerful)
[11:52] <M0NSA> where is the back seat?
[11:52] <HixWork> or big engine, depending on how you look
[11:52] <HixWork> the back seats are a v6 :)
[11:52] <fsphil> yikes
[11:52] <fsphil> my car suddenly seems big
[11:53] <HixWork> eh bobby whats the french for practicality
[11:53] <M0NSA> not as extreme as this: http://www.ronpatrickstuff.com/images/VW_Rear_Dr_Open1_PScopy.jpg
[11:53] <gonzo_> I once went to hire a car and they tried to give me something called a twingo!]
[11:53] <Geoff-G8DHE> LOL
[11:53] <costyn> HixWork: oh yea have you that mad clio
[11:54] <jonsowman> gonzo_: twingos are great
[11:54] <HixWork> ah, hadnt even thought of a rental. Nothing is as quick as a rental
[11:54] <gonzo_> apart from it being too small for our cases to go in, there is no wayy I'm drioving something thhat sojunds like a chocky bar
[11:54] <M0NSA> just remebering that clio, didn't topgear say it was crud? ;)
[11:54] <craag> HixWork: A lot more powerful then. I have an 65bhp-when-new corsa :)
[11:54] <HixWork> M0NSA, !=
[11:54] <M0NSA> i mean on the practicality front
[11:54] <fsphil> top gear would never lie
[11:54] <M0NSA> as i recall, they loved the engine
[11:55] <gonzo_> ah yes, hire cars are fitted with special high revving engines and curb mounting tyres
[11:56] <gonzo_> they offered us an insurance excess waiver for a few eu per day. Which meant we could write it off for about 50quid. Was sooooo tempting!
[11:56] <HixWork> M0NSA, no, you could get a baby in the front boot and some kippers ijn the rear boot as proven by JC
[11:56] <M0NSA> squished baby, shaken kippers...
[11:56] <HixWork> gonzo_ I'll not mention an A class I had for Rally catalunya a few years gone
[11:57] <HixWork> th eHe cylinder that is just below 1m what volume is that one?
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[12:25] <navrac_work> interesting - just stumbled across this
[12:26] <navrac_work> http://groups.yahoo.com/group/GPSL/message/8470
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[12:27] <navrac_work> which would indicate a 100g balloon has a diameter of 5.4 feet at burst point so <2m so not need a notam#
[12:28] <fsphil> 1.65m.. hmm
[12:30] <fsphil> he didn't mention if it was a hwoyee
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[12:34] <F5MVO> Hello all, Pico lost by lack of receiving station ?
[12:34] <Elwell> do people find its better to fill and launch immeadiatly or (if you have large shed / shelter / no wind / no sunlight) sit and let the balloon equilibrate for a while first?
[12:34] <eroomde> no never the latter
[12:34] <eroomde> inflaed balloons want to go
[12:34] <eroomde> they resent being stuck around on the ground
[12:35] <eroomde> the fill is the last thing you do, once everything else is definitely working, gps is sitting happy and locked, weather is good
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[12:35] <Elwell> ah K - wondered if it gave chances of higher bursts or anything
[12:36] <NigelMoby> f5mv0 it got to low for me to track :(
[12:37] <F5MVO> Yes i see this night, goog job
[12:37] <F5MVO> Yes i see this night, good job
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[12:38] <F5MVO> great flight for a small balloon
[12:38] <HixWork> navrack you also need to allow the payload train so >2.0m
[12:39] <F5MVO> good day, see you later, bye
[12:39] <NigelMoby> it was, very slow though
[12:39] <NigelMoby> byee!
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[12:55] <HixWork> so, reading that interrupt article Upu linked to, it doesn't seem too lairy to get to grips with..
[12:56] <HixWork> or have i just simplified it too much in my brain?
[12:56] <navrac_work> HixWork - no need for a payload train - you can build the tx into the neck
[12:56] <daveake> It's not that difficult no
[12:56] <HixWork> fair enough navrac_work
[12:57] <HixWork> daveake, i was expecting some hellish 2500 line monster
[12:57] <HixWork> but it seems reasonably logical i think
[12:57] <Upu> Hix basically once every time interval it just jumps to the interupt routine and says "ok what should I be doing for this tick"
[12:57] <daveake> yup
[12:57] <HixWork> maybe i am learning
[12:57] <daveake> Just get the timer value right
[12:57] <Upu> does it exits
[12:57] <daveake> and feed new sentences from your main loop when needed
[12:58] <fsphil> you do need to be aware that the interrupt could happen at any point in the code
[12:58] <HixWork> hmmm, that's where i oversimplified it
[12:59] <daveake> Indeed. There's a whole world of pain awaiting if you change stuff in the int routine that your main loop was expecting not to change
[12:59] <Upu> yeah I don't think that code has the variable locking in place
[12:59] <Upu> but its just an example :)
[12:59] <HixWork> so the timer value is controlling the fsk
[12:59] <daveake> The way I do it in my tracker is have a simple flag that says "gimme another sentence"
[13:00] <fsphil> I've an 8-bit counter, that says how many bytes the interrupt still has to transmit
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[13:00] <fsphil> when it is zero, you know it's ready for more
[13:00] <daveake> The main loop does that, then (as the last step*) sets something to say "sentence ready".
[13:00] <daveake> * <-- important
[13:01] <HixWork> so when it sees the checksum, it knows its done
[13:01] <fsphil> the bit that gets me every time is overwritting the buffer currently being sent
[13:01] <HixWork> seems I have something to keep me occupied until my pcbs get made at least :)
[13:05] <daveake> fsphil In mine the buffer gets written after the interrupt sets that flag. The only thing the main loop has to do at that point is sprintf the sentence then calculate and append the checksum, then set a flag saying "sentence ready".
[13:05] <daveake> That's all pretty quick so there's very little downtime between sentences
[13:06] <fsphil> I added a function that only returns when the interrupt has finished
[13:06] <daveake> One day I'll get round to doing the gps decoding under serial interrupt
[13:07] <fsphil> it actually has a 16-bit counter, and a hacky way to make sure it's not half updated
[13:07] <daveake> ah ok my main loop just checks for gps data then does any sensors that need doing (not every time round)
[13:07] <daveake> so the loop is usually pretty quick
[13:07] <cuddykid> does anyone happen to have an old RC system (trans + receiver) with 7 or more channels kicking around?
[13:07] <daveake> I smell UAV project
[13:08] <cuddykid> daveake: indeed! The HAB copter :P
[13:08] <cuddykid> got almost all the parts for a hexacopter now - just need an RC system and batt charger :)
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[13:13] <HixWork> BMFA classisifieds is good cuddykid
[13:13] <cuddykid> thanks HixWork - I'll have a look
[13:13] <HixWork> http://www.bmfaclassifieds.co.uk/
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[13:37] <Jess--> anyone bored enough to read through and sanity check some tracker code?
[13:37] <Randomskk> anyone know if M0VBR is here?
[13:37] <Jess--> I'm M0VBR
[13:37] <Randomskk> that's handy
[13:38] <HixWork> heh
[13:38] <Randomskk> your paylaod config says that the field "flight_state" says whether it's invalid GPS or not
[13:38] <Randomskk> but it doesn't have a flight_state field
[13:38] <Randomskk> so it's all breaking quite upsettingly
[13:38] <Jess--> ok, stopped uploading, will edit the doc
[13:40] <Jess--> fixed the doc and uploading again, making sense now?
[13:41] <Randomskk> looking good
[13:45] <Jess--> That's good to know, it's the first run of some new tracker code, looks like I need to do some work on not transmitting until it's got a valid lock but it seems that once it does lock it's solid
[13:47] <Randomskk> you should transmit even without a lock
[13:47] <Randomskk> can be useful for foxhunting and knowing it's still alive
[13:47] <Randomskk> just transmit whether it thinks it has lock or not, too
[13:47] <costyn> yup, just start transmitting as soon as you can
[13:47] <Jess--> I'm on about from initial power up, it currently produces some wild figures
[13:48] <Jess--> I thought I had it holding off, but that doesn't appear to be the case
[13:48] <costyn> heh
[13:48] <Jess--> by holding off I mean transmitting a known string but no $$payloadname and no position info
[13:49] <costyn> nah
[13:49] <Jess--> if anyone wants a good laugh my code is here http://81.168.22.130/testtracker.zip
[13:50] <costyn> Jess--: easier to upload it to pastebin or make a git repository
[13:50] <Jess--> I think that's a job for this evening
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[14:05] <Jess--> Git now set up... https://github.com/Jess--/
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[14:12] <craag> Jess--: Looking through.. remember to modify the setupGPS() function before you fly it on a latex balloon.
[14:13] <craag> It's currently set up for 'pedestrian' mode, so 9000m ceiling.
[14:14] <Jess--> I was going to ask what the diff is between pedestrian and flight modes
[14:14] <craag> pedestrian is more limited, it will regard any fix of more than 9000m altitude and 67 mph as invalid.
[14:14] <jonsowman> pedestrians can't fly
[14:14] <Jess--> I should imagine you recognise blocks of the code in there craag
[14:15] <HixWork> uncomment 130-132 and comment out 135/6
[14:15] <craag> I used it as theoretically it should allow the GPS to have to work less hard in foil flights, as it expects less movement.
[14:15] <Jess--> jonsowman it depends what you hit them with
[14:16] <jonsowman> true, have to give them a pretty good whack to get them above 9km
[14:16] <HixWork> they normally splatter with that level of force
[14:17] <Randomskk> you can accelerate them pretty gently
[14:20] <HixWork> from listening to london control whilst at work on SDR, I can confirm that ATC controllers should not eat crisps with headphones on
[14:23] <craag> lol
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[14:41] <Jess--> sample of transmitted data,... $$$$VBRTEST,419,94,143942,5308265,11320,10,4*DFA6 LXryryryryryry VBRTEST Radio Rebooted $$$$VBRTEST,420,95,144004,5308261,11322,87,4*3B74 $$$$VBRTEST,421,95,144018,5308261,11324,79,4*CEE6
[14:41] <Jess--> obviously the carriage returns were stripped
[14:50] <kokey> what's that temperature sensor you guys tend to use?
[14:51] <mattbrejza> ds18b20
[14:51] <HixWork> TMP36 for me
[14:52] <kokey> cool, found a local source for the ds18b20
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[14:55] <HixWork> kokey http://goo.gl/XuhpP is TMP36, though probably cheaper elsewhere
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[14:57] <kokey> I'm in South Africa now
[14:57] <kokey> hence why it's all gotten a lot trickier for me to get components
[14:57] <HixWork> ahhh
[14:58] <kokey> that said looks like there's a nice local supplier of both the ds18b20 and even more arduino pro mini 3v if I need
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[15:23] <kiwi_> Why do everyone use digital temp sensors instead of thermistor?
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[15:25] <eroomde> saves having to manual calibrate
[15:25] <eroomde> manually*
[15:25] <eroomde> but it does have its disadvantages too
[15:26] <mattbrejza> thermistors are non linear too (i think)
[15:26] <eroomde> for example, limited temperature range
[15:26] <eroomde> mattbrejza: yes but that's why you calibrate
[15:26] <eroomde> a polynomial fit or something
[15:27] <mattbrejza> means you need a decent resolution adc to get a good resolution at one of the ends
[15:27] <eroomde> there are much more accurate and large range temperature sensors if you really care, but accurate measurement of temp in very low pressures is actually quite a tricky problem
[15:27] <mattbrejza> can also daisy chain digital ones if one-wire or i2c
[15:27] <eroomde> as you tend to end up instead measuring how much solar radiation the sensor itself is absorbing
[15:28] <eroomde> but if you want proper accuracy then it's definitely doable with only a slightly increment in complexity
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[15:42] <kiwi_> Thanks for the explanation guys
[15:45] <griffonbot> Received email: Graeme Bowman "[UKHAS] Help making a music video"
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[16:50] <Willdude123> Hi.
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[16:56] <Willdude123> The parents still have a lot of questions, but I'm going to be optimistic and hope for the best.
[16:57] <Willdude123> I don't know why but I think they think it's a bit weird that Upu is giving me some free stuff.
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[17:00] <griffonbot> Received email: Troy Reabe "Re: [UKHAS] Help making a music video"
[17:00] <Upu_M0UPU> sponsorship :)
[17:00] <lz1dev> lol
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[17:02] <Willdude123> Yes. He's not giving me freebies. It's more sponsorship. You could call it a scholarship.
[17:02] <Willdude123> Damn you, Streisand Effect.
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[17:05] <lz1dev> that would need some serious gear
[17:07] <eroomde> i suspect post-production greenscreen
[17:07] <eroomde> whhich doesn't really need greenscreen
[17:07] <eroomde> just some kind of cvis markers
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[17:14] <lz1dev> eroomde: a few markers, you can do everything else in after effects
[17:15] <lz1dev> still would be nice to have some HD footage on a nice day
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[17:16] <HixWork> you could just insert the ipod actions into the real footage of the ipod with AfterEffects
[17:16] <griffonbot> Received email: Steve Aerospace "Re: [UKHAS] Help making a music video"
[17:17] <eroomde> ever on the sell
[17:18] <eroomde> your way won't work but conveniently i happen to have thought of a way it will work!
[17:18] <jonsowman> :)
[17:18] <HixWork> heh, thinking of that, you could [if willing to sacrifice the ipod case] use osme high tensile dyneema cord to secure it to the payload, edit it out after
[17:20] <eroomde> i'd just have a foam leg out of shot. that's what we've done before, if we've bothered
[17:20] <eroomde> but usually didn;t bother
[17:20] <arko> morning
[17:21] <HixWork> hi arko
[17:21] <eroomde> eg
[17:21] <eroomde> http://metro.co.uk/2009/04/06/cartoon-launched-into-space-for-alien-premiere-7418/
[17:21] <HixWork> eroomde, i was thinking as a backup, use dyneema cord insite whatever arm is holding it
[17:21] <arko> sup Hiz
[17:21] <arko> Hix*
[17:21] <HixWork> heh
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[17:25] <HixWork> Viz into HAB now then?:)
[17:27] <eroomde> yo arko
[17:27] <eroomde> all well with you?
[17:27] <arko> dude
[17:27] <arko> sf was awesome
[17:27] <arko> wacky as expected
[17:27] <arko> but awesome
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[17:28] <eroomde> and better weather than here huh
[17:28] <eroomde> i miss the weather
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[17:31] <arko> weather was decent
[17:31] <arko> the golden gate bridge was epic
[17:31] <arko> bigger than i thought
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[17:33] <eroomde> home now?
[17:33] <arko> yeah
[17:33] <arko> i didnt take much pictures
[17:33] <arko> don;t like to
[17:34] <arko> enjoy seeing it
[17:34] <arko> plus i dont have a nice camera so the picture come out crap
[17:35] <mattbrejza> craag: did you use the rfm22b module from upu or one intended for 868MHz?
[17:35] <eroomde> i found an M9-P for cheap on craigslist
[17:35] <eroomde> i got close
[17:35] <arko> woah
[17:35] <arko> dude, thats one pricey piece of hardware
[17:36] <eroomde> yes
[17:36] <eroomde> not so much on CL tho
[17:36] <eroomde> same as a D600
[17:36] <griffonbot> Received email: Steve Aerospace "Re: [UKHAS] Help making a music video"
[17:36] <arko> yeah, not so bad
[17:36] <arko> just so many things i want that are like $2000
[17:36] <eroomde> but I think I want the new M, and i'm happy to spend 18 months saving up for it (ideally 2nd hand) while i use the f*ck out of the x100
[17:37] <arko> heh yeah
[17:37] <arko> good plan
[17:37] <eroomde> lol i'm not sure that was meant to go to the list
[17:37] <eroomde> steve's email
[17:37] <jonsowman> think you might be right
[17:37] <cuddykid> ping Laurenceb
[17:38] <mattbrejza> not the worst hes sent to the group unintended
[17:38] <eroomde> no indeed
[17:39] <Laurenceb> sup
[17:39] <Laurenceb> ?
[17:39] <cuddykid> Laurenceb: hiya - wondering if there is anywhere on campus (guessing the ee building) where I could solder some bits up? Is there like a walk in lab?
[17:39] <Laurenceb> no prob
[17:39] <Laurenceb> come to my office
[17:40] <Laurenceb> pm
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[17:57] <Willdude123> Is PICO recovered?
[18:00] <mfa298> I don't think so, all the last strings were whist it was 1km up in the air so there's a large area it could have landed in
[18:02] <chrisstubbs> the battery ran out/
[18:02] <chrisstubbs> ?
[18:02] <mfa298> it may have by now
[18:02] <mfa298> but was still going strong when it drifted out of range of the few people trying to recieve it last night
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[18:32] <Hix> Upu, about?
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[18:32] <Upu_M0UPU> yep
[18:33] <Hix> hello, just a very quick interrupt query. the delay(1000); in your sample code from the blog
[18:33] <Hix> whas thaaat all about then?
[18:33] <Upu_M0UPU> checking
[18:33] <Hix> in the loop()
[18:33] <Hix> you are or its for
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[18:33] <craag> mattbrejza: I used an 869 rfm22 from farnell.
[18:34] <Upu_M0UPU> just to slow it down I guess
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[18:35] <Hix> ok, was wondering. wasn;t sure if it needed a delay for after the sentnce to act as a signal for habhub to process
[18:35] <Upu_M0UPU> it will have been a hang over from something else
[18:35] <Upu_M0UPU> take it out and see what breaks
[18:35] <Hix> ok, i'll give it a go later
[18:35] <Hix> though it doens't look as scary as i thought
[18:36] <Hix> the big thing is getting camera control going in there too
[18:36] <Hix> which im assuming is where interupts come in handy. pic every 5 secs should be ok now
[18:36] <arko> eroomde: yo
[18:36] <Upu_M0UPU> you have 2 timers on the AVR actually
[18:36] <Upu_M0UPU> so you could use timer2 to read the GPS
[18:37] <arko> want to join my new badass company?
[18:37] <Hix> yeah, read your reference
[18:37] <arko> nearSpaceX
[18:37] <Upu_M0UPU> serial can trigger an interrupt too
[18:37] <Upu_M0UPU> or something
[18:37] <Upu_M0UPU> not looked into it
[18:37] <Upu_M0UPU> I'm in arko
[18:37] <arko> i just bought nearspacex.com
[18:37] <Upu_M0UPU> lol
[18:37] <Hix> this is all in avr/interrupt.h
[18:37] <arko> totally going to photoshop the spacex logo
[18:38] <Hix> ha good one arko
[18:38] <Hix> illustrator it though, vector better
[18:38] <arko> yeah
[18:38] <arko> going to make the SparrowHawk 9 and the SparrowHawk Heavy
[18:38] <arko> and wait for a C&D from spacex
[18:38] <mattbrejza> craag: ah i see, no issue then. just found the 869 on farnell which made me realise that one module wont be able to do both from a matching point of view
[18:38] <Upu_M0UPU> haha
[18:39] <Hix> especially for your nearspacex flight jacket embroidery :)
[18:39] <arko> oh man, cant wait to apply back to spacex and be like, thanks for the lawsuit guys
[18:39] <Hix> what baus can NTX2 handle reliably?
[18:39] <Hix> baud
[18:40] <Upu_M0UPU> I think driven with interupts it can do 1200
[18:40] <Upu_M0UPU> but I'd stick to 300 or less
[18:42] <mattbrejza> 1200 only just fits in the BW of dldigi
[18:42] <mattbrejza> and the IF filter but mess your signal a bit
[18:42] <mattbrejza> *might
[18:42] <mattbrejza> also youll have to tune the radio continuously if it's drifting
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[18:44] <griffonbot> Received email: Marco (projectBLAST) "[UKHAS] University of Southampton Project BLAST - Launch Report - (02-03-13)"
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[18:46] <costyn> bah
[18:46] <Hix> wasn't thinking of going to extreme, maybe 150-200 thought want people to decode reliably
[18:46] <costyn> if they'd read the mailinglist, they'd've seen I was doing a launch
[18:46] <costyn> :)
[18:48] <craag> costyn: Yeah, I think a lot of people fail to realise how big our hab community is, and so don't make much effort to keep up with it.
[18:48] Nick change: Upu -> UpuWork
[18:48] Nick change: Upu_M0UPU -> Upu
[18:48] <costyn> "member of the HABHUB IRC Internet Forum (Named GMT)" say what?
[18:48] <costyn> IRC != Internet Forum
[18:48] <craag> lol yeah.
[18:48] <costyn> HABHUB != UKHAS
[18:49] <costyn> craag: well if they'd announced their launch on the list in time, they wouldn't have been "suprised" by it :)
[18:49] <costyn> well anways, we found a good compromise
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[18:51] Nick change: `rune_away -> `rune
[18:52] <Hix> hey arko - I now own stratosvision.com :)
[18:53] <arko> hahaha
[18:53] <arko> nice
[18:53] <number10> does anyone know if the blast paload ihas metal rods to hold those foam sheets in place? http://www.flickr.com/photos/tadrinkwater/8526904568/in/set-72157632910977238/lightbox/
[18:53] <costyn> arko: did you see the video of my launch?
[18:53] <arko> oh no! linky?
[18:53] <Hix> biab
[18:53] <costyn> arko: http://www.youtube.com/watch?v=AKNbJCVRXhA#at=45
[18:53] <craag> number10: Yes it does.
[18:54] <arko> ohhhh
[18:54] <arko> yeah!
[18:54] <arko> saw this last night
[18:54] <costyn> ah ok :)
[18:54] <arko> gopro ran out right at the burst right?
[18:54] <number10> not too sure thats a good idea
[18:54] <craag> number10: from a damage point of view?
[18:55] <costyn> arko: no, it continued for another 20 minutes or so
[18:55] <arko> ohh
[18:55] <arko> ok
[18:55] <number10> yes, if there ware a high impact speed due to large balloon remenets
[18:55] <arko> must have misread
[18:55] <arko> very cool man
[18:55] <costyn> arko: cut out at about 5KM I think
[18:55] <number10> sp
[18:55] <arko> i love this sounds
[18:55] <arko> awww
[18:55] <arko> was it just on record the whole way?
[18:55] <number10> remnants
[18:56] <craag> number10: They don't stick out more than a few mm, with nuts on the end once I assembled I think.
[18:57] <craag> number10: Oh, they have plastic bits on the end.
[18:57] <costyn> arko: yep
[18:57] <arko> wow
[18:57] <arko> thats pretty crazy
[18:57] <arko> lots of battery
[18:57] <costyn> arko: It's 2 hours long or something
[18:57] <arko> dang
[18:57] <arko> are there extended batteries?
[18:58] <costyn> arko: nope, standard batteries... 2 hours 14 minutes
[18:58] <craag> number10: You can just about see in this pic, and it reminded me: http://i.imgur.com/MRBZSRY.jpg
[18:58] <costyn> and it was an old unit too
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[18:58] <arko> awww
[18:58] <costyn> we were surprised too at how long it lasted, especially since it got into -70F temperatures
[18:58] <arko> o well, very cool anyway :)
[18:58] <arko> yeah
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[18:59] <number10> I think some glue would be a bit safer
[18:59] Lunar_Lander (~gd-compto@p5488A20A.dip.t-dialin.net) joined #highaltitude.
[18:59] <Lunar_Lander> hello
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[19:00] <craag> number10: Probably would be, but it's all designed to be modular and easily taken apart. So it can be poked until it works at the launch site :P
[19:01] <number10> craag: hopefully nobody on the ground gets poked with it
[19:03] <mclane> Hi Lunar, ready for launch?
[19:04] <craag> number10: Yep, the weight of the payload makes the thought of being clonked on the head with it anyway quite worrying imo. But they've (apparently) had safety reviews and got every last detail signed off by insurance and the like.
[19:04] <Lunar_Lander> mclane, yea, got everything together
[19:05] <craag> Lunar_Lander: When's your launch?
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[19:05] <Lunar_Lander> on 9 am UTC tomorrow
[19:05] <Lunar_Lander> or better: between 9 and 10
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[19:06] <eroomde> arko:
[19:06] <eroomde> no.
[19:06] <craag> Cool, I'll be watching. Good luck!
[19:07] <arko> eroomde: YOU WILL REGRET THIS!
[19:07] <arko> no you wont :(
[19:07] <arko> im planning on making a spacex prank page
[19:07] <arko> same theme
[19:07] <arko> :P
[19:09] <arko> if i get a C&D from spacex im framing it
[19:10] <arko> "that one time i pissed off spacex" engraved plaque
[19:11] <Lunar_Lander> thanks craag
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[19:19] <craag> Hmm, it's actually looking like the FIZZLE problems were a coding fault, to do with the interrupt code.
[19:20] <craag> Does anyone know what should happen when the interrupt timer fires again, but you are still in the previous interrupt function?
[19:21] <craag> ie, you accidentally left a delay(100) in a subfunction..
[19:23] <mfa298> isn't that into the "here be dragons" area of coding ?
[19:23] <craag> mfa298: I believe so... hence issues in the air that didn't turn up in testing!
[19:23] <Geoff-G8DHE> Depends on processor, IRQ masks, Stack space, and code!
[19:24] <arko> eroomde: how's work been?
[19:27] <craag> Geoff-G8DHE: Well at least that explains why things went wrong in flight but not on the ground. I'll rewrite it, test thoroughly again, then see who I can beg to piggyback it again.
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[19:28] <jcoxon> evening
[19:29] <craag> evening jcoxon
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[19:42] <mattbrejza> Lunar_Lander: were you gonna use my app to decode tomorrow?
[19:42] <mattbrejza> if so ill update it
[19:43] <costyn> lz1dev: here?
[19:43] <Lunar_Lander> we tried it today
[19:43] <Lunar_Lander> what it did was that appearantly the green lines found the signal
[19:43] <Lunar_Lander> but it decoded only strange letters and @ signs
[19:43] <mattbrejza> was the baud set right?
[19:43] <mattbrejza> but it doesnt like some payloads
[19:44] <mfa298> mattbrejza: one feature that might be useful on the app is to force the screen to stay on
[19:45] <mattbrejza> yea thats on the list
[19:45] <mattbrejza> i was wondering whether to add a button at the top
[19:45] <mattbrejza> but i didnt want to have too many
[19:45] <mattbrejza> might just be an option in the meni
[19:45] <mattbrejza> and disable if nothing for a while
[19:45] <mfa298> I'd have suggested an option on the menu in the settings
[19:46] <mfa298> *or in the settings
[19:46] <mattbrejza> development has slowed a bit in the last week due to the POP launch
[19:48] <mfa298> you need a launch site that's a few meters higher. I could only get a few strings from it before you launched
[19:48] <Laurenceb_> did pico land on a very tall hill/mountain?
[19:48] <Laurenceb_> altitude leveled off at end
[19:49] <Steffanx> did it run out of power?
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[19:49] <mfa298> it went out of range of any recievers.
[19:49] <Steffanx> end of the world :)
[19:49] <mattbrejza> just use it as an excuse to get a bigger antenna mfa298
[19:50] <Lunar_Lander> mattbrejza, yea we set it to 50
[19:50] <mfa298> won't really help as it's a block of flats so I can't put up a proper antenna, it's just an antenna out the window
[19:50] <mattbrejza> ah
[19:50] <mattbrejza> Lunar_Lander: the decoder is still very much beta, it might work next launch ;)
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[19:53] <Lunar_Lander> :)
[19:55] <lz1dev> pong costyn
[19:55] <Laurenceb_> theres seems to be a pirate ground station
[19:55] <costyn> lz1dev: you made the code for the mobile tracker right?
[19:56] <lz1dev> more or less
[19:57] <costyn> I tried to use it for the chase car functionality, but it updated very infrequently
[19:59] <lz1dev> checks for a new positions every 30sec
[19:59] <lz1dev> position*
[20:04] <costyn> ok, I guess I'll try it out when not chasing, it was behaving strangely
[20:05] <lz1dev> i've not tested it much, when i did current implementatino seemd to work best
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[20:18] <Maxell> costyn: it could also be iOS' Safari not allowing GPS updates when the screen is off.
[20:18] <costyn> Maxell: could be
[20:19] <costyn> Maxell: but even when the app was active and the screen not tunred off it wasn't working very well
[20:20] <Maxell> Yeah, it was pretty hectic
[20:21] <Lunar_Lander> hi NigeyS
[20:22] <daveake> Lunar_Lander Big day tomorrow?
[20:22] <Maxell> old topic is old
[20:23] <Lunar_Lander> looks like it
[20:23] <Lunar_Lander> predicition looks quite good
[20:23] <daveake> Excellent, good luck!
[20:23] <Lunar_Lander> thanks
[20:23] <Lunar_Lander> private sector has taken a hit just now
[20:23] <Lunar_Lander> and my bus almost crashed today
[20:24] <lz1dev> Maxell: is that for webapps or any app
[20:24] <lz1dev> most tracking apps get positions when screen is off
[20:25] Action: Maxell doesn't use iOS himself
[20:25] <lz1dev> pretty sure if you run a webpage in app mode, it also runs during screen off
[20:25] <griffonbot> Received email: Steve Daniels "[UKHAS] Habhub contact"
[20:26] <lz1dev> what i've noticed is that different browsers dont excatly follow the spec
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[20:31] <Maxell> lz1dev: regarding the gps location feature?
[20:31] <lz1dev> geolocation API
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[20:40] <griffonbot> Received email: Anthony Stirk "Re: [UKHAS] Habhub contact"
[20:47] <griffonbot> Received email: Steve Daniels "RE: [UKHAS] Habhub contact"
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[20:55] <OZ1SKY_Brian> Hi. what was the launch time for oernen-ii ?
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[20:58] <daveake> 10am+
[20:58] <Upu> Lunar_Lander
[20:58] <Upu> don't forget to mail the list with details
[20:58] <OZ1SKY_Brian> daveake thanks
[20:58] <daveake> That's the start of their launch window
[20:58] <Lunar_Lander> yea
[20:59] <Upu> expected burst/ launch location/ precicded ascent decent
[20:59] <Upu> I'll set the tracker up for you
[20:59] <Lunar_Lander> give me about half an hour
[20:59] <Lunar_Lander> thanks
[20:59] <griffonbot> @ProjectBlast: Launch Report from this Saturday now online at http://t.co/WaoEEGWqrS #UKHAS [http://twitter.com/ProjectBlast/status/308683103801597953]
[20:59] <Upu> "Launch of many hats been eaten"
[20:59] <Lunar_Lander> yea
[20:59] <Upu> seriously though good luck
[20:59] <daveake> indeed
[20:59] <Upu> and we'll do what we can from this side to help
[21:00] <Lunar_Lander> yeah
[21:00] <Lunar_Lander> thank you
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[21:01] <OZ1SKY_Brian> Lunar_Lander, Done with remote config, should be ready now for tomorrow, tested on 2G and 3G
[21:02] <Lunar_Lander> cool, thanks
[21:04] <Lunar_Lander> Upu, got my message?
[21:05] <Upu> yeah sorry was making a cuppa
[21:05] <Upu> so more advice
[21:05] <Upu> when you put the balloon over the filler tube and tie wrap it on
[21:05] <OZ1SKY_Brian> Nice, the cable did fit the hole, lol http://oz1sky.smart-tech.dk/diverse/hole.jpg
[21:05] <Upu> fasten some gaffer tape round the bottom but fold it back on itself so you can rip it off easily
[21:06] <Upu> before you turn the gas on
[21:06] <Upu> have some gaffer tape, wire cutters and a pile of tie wraps close by
[21:08] <Lunar_Lander> ok
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[21:08] <Lunar_Lander> good advice on the folding
[21:10] <Lunar_Lander> stupid question
[21:10] <Lunar_Lander> can I write on the mailing list by being logged in at google?
[21:10] <Lunar_Lander> didn't write on there for a long time
[21:10] <daveake> yes
[21:10] <Upu> yes
[21:11] <Upu> whats the predictions looking like for tomorrow ?
[21:11] <Lunar_Lander> one moment
[21:11] <Lunar_Lander> http://habhub.org/predict/#!/uuid=ae707dda116355fd79a92a11c796353222c1a254
[21:11] <Lunar_Lander> looks like an open field at the end
[21:12] <Upu> whats your neck lift ?
[21:13] <number10> llooks like you are launching tomrorrow Lunar_Lander good luck with the flight
[21:13] <number10> -l
[21:13] <Lunar_Lander> thanks
[21:13] <Lunar_Lander> Upu, 1.3 kg roundabout
[21:13] <Upu> Lunar those numbers don't look right, what is your balloon ?
[21:14] <Lunar_Lander> I got a KCI-1500
[21:14] <daveake> That's wrong then
[21:14] <Lunar_Lander> well the cutdown is set for 22 km
[21:15] <daveake> aaaaaaaaaaaaaaaaaaaaah
[21:15] <Upu> ah
[21:15] <Upu> click
[21:15] <Lunar_Lander> yeah
[21:15] <Lunar_Lander> :)
[21:15] <Upu> what if the cut down doesn't work ?
[21:15] <Lunar_Lander> the burst would be at some 36.6
[21:15] <Lunar_Lander> one sec
[21:15] <daveake> You might want to do a prediction for that then
[21:15] <Upu> yeah do a prediction for that too
[21:15] <Lunar_Lander> yeah I ran that too
[21:15] <daveake> s/might/definitely do/
[21:15] <Lunar_Lander> one moment
[21:15] <Lunar_Lander> forest http://habhub.org/predict/#!/uuid=2399059374944f21f25ca5f8d7b10eec378dddb1
[21:16] <Upu> ok as long as you've considered that one
[21:16] <Lunar_Lander> yeah
[21:16] <Upu> thats ok I just wondered
[21:16] <Lunar_Lander> yea
[21:17] <Lunar_Lander> :)
[21:17] <Upu> got enough gas for faster ascent ?
[21:17] <Lunar_Lander> yeah
[21:17] <Lunar_Lander> 5.5 could be done too
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[21:17] <Lunar_Lander> DFS said I might deviate from the 4.5 I gave them by 1 m/s
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[21:17] <Upu> I'm always a fan of more gas
[21:18] <Lunar_Lander> yea
[21:18] <Upu> up quicker
[21:18] <Upu> less distance
[21:18] <Upu> and as you're not going for altitude
[21:18] <Lunar_Lander> true
[21:19] <Upu> turn the dial to full Stirk
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[21:19] <OZ1SKY_Brian> lol
[21:19] <Lunar_Lander> XD
[21:20] <Upu> do you know what your neck lift is going to be ?
[21:20] <daveake> Our Stirk dials go all the way up to 11
[21:22] <Lunar_Lander> 1391 g
[21:22] <Upu> put that in a plastic milk carton less the filler weight
[21:22] <Lunar_Lander> yes
[21:23] <Upu> May the balloon gods be on your side, may you miss all trees, power lines and water amen
[21:23] <Lunar_Lander> xD thanks
[21:26] <OZ1SKY_Brian> yes best of luck lunar. hope to hear it up here
[21:27] <Lunar_Lander> thank you
[21:29] <NigeyS> and Kev..
[21:29] <NigeyS> remember to tie the payload to the balloon before you let it go eh :)
[21:31] <Lunar_Lander> XD!
[21:33] <Upu> E-mail Lunar_Lander
[21:33] <Upu> now :)
[21:33] <Lunar_Lander> yea
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[21:39] <Lunar_Lander> it says the mail has been sent
[21:39] <Lunar_Lander> and has to be approve
[21:39] <Lunar_Lander> *d
[21:40] <griffonbot> Received email: Kevin Glinka "[UKHAS] OERNEN-II University of Osnabruck (Germany) launch"
[21:40] <Randomskk> an historic moment approving that email
[21:40] <Randomskk> took my time over it
[21:40] <Randomskk> these things don't happen every day
[21:40] <Randomskk> good luck!
[21:41] <Lunar_Lander> :P thank you
[21:41] <Upu> lol
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[21:41] <Upu> is your flight doc approve ?
[21:41] <NigeyS> Randomskk, did you break into a sweat? :p
[21:42] <Upu> http://spacenear.us/tracker/
[21:42] <Lunar_Lander> Upu, yea it says so
[21:42] <Lunar_Lander> LOL!
[21:42] <Upu> I'll check with James we can remove his flight
[21:42] <Lunar_Lander> yea
[21:42] <lz1dev> lol
[21:43] <Lunar_Lander> there is a new guy near hannover!
[21:43] <radim_OM2AMR> Lunar - good luck ! You forgot the date :-)
[21:43] <Lunar_Lander> thanks :)
[21:44] <Upu> can I remove PICOTEX & POP ?
[21:44] <Lunar_Lander> radim_OM2AMR, yea just amended it
[21:44] <lz1dev> chrome doesn't like spacenear.us :(
[21:44] <Upu> opens on mine
[21:44] <lz1dev> crashes on mine :)
[21:44] <Upu> but we could do with removing James flight
[21:44] <griffonbot> Received email: Kevin Glinka "[UKHAS] Re: OERNEN-II University of Osnabruck (Germany) launch"
[21:44] <Randomskk> NigeyS: a premonitory one :P
[21:44] <NigeyS> lol
[21:44] <radim_OM2AMR> Upu, just to know - envelope was delivered OK :-) Thank you !
[21:44] <Upu> super :)
[21:45] <Upu> when did I post that ?
[21:46] <radim_OM2AMR> week ago, very quick delivery
[21:46] <Upu> ok cool
[21:46] <Upu> you're working on 1.8v picos ?
[21:46] <radim_OM2AMR> yes, my issues with 1.8V atmel are solved :-)
[21:46] <Upu> ok cool
[21:47] <radim_OM2AMR> lesson learned - do not trust your breadboard power line :-)
[21:47] <Upu> oh I gave up with breadboard ages ago
[21:47] <Upu> spend 70% of the time fixing issues caused by it
[21:48] <griffonbot> Received email: Kevin Walton "Re: [UKHAS] Tracker Schematic Review"
[21:49] <radim_OM2AMR> my bb caused disconnected Analog Vcc& that was the reason why it stopped under 2V
[21:49] <XtremD> griffonbot: help
[21:51] <Lunar_Lander> email OK Upu ?
[21:52] <cuddykid> ah, is it the big day tomorrow then Lunar_Lander? Many years in the waiting :D
[21:52] <Upu> yups
[21:52] <Lunar_Lander> yeah cuddykid :)
[21:52] <Lunar_Lander> thanks Upu
[21:52] <cuddykid> good luck Lunar_Lander
[21:52] <Lunar_Lander> thanks
[21:53] <mclane> good luck Lunar_Lander; will not be able to track tomorrow (will be @ work)
[21:53] <Lunar_Lander> thanks mclane
[21:53] <Lunar_Lander> no problem :)
[21:53] <radim_OM2AMR> Lunar_Lander, you will destroy my work productivity like guys from UK last week :-D
[21:54] <Lunar_Lander> xD
[21:56] <OZ1SKY_Brian> Lunar_Lander get to bed, belive me you need the energi tomorrow
[21:56] <Upu> and take some water Lunar
[21:56] <lz1dev> costyn: just pushed an update, it should perform better
[21:56] <Lunar_Lander> yeah
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[21:57] <radim_OM2AMR> Lunar, or take with you RedBull battery :-)
[21:57] <Lunar_Lander> XD
[21:57] <Lunar_Lander> yeah I got two cans with baumgartner on them
[21:57] <Lunar_Lander> that special edition ;)
[21:57] <radim_OM2AMR> :-D
[21:58] <radim_OM2AMR> Lunar_Lander, could you please post the prediction link ?
[21:58] <Lunar_Lander> ah
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[21:58] <Lunar_Lander> http://habhub.org/predict/#!/uuid=ae707dda116355fd79a92a11c796353222c1a254
[22:00] <radim_OM2AMR> Lunar, btw. why the cut-down in that altitude ?
[22:02] <griffonbot> Received email: Anthony Stirk "Re: [UKHAS] Tracker Schematic Review"
[22:02] <Lunar_Lander> we decided on that early on
[22:02] <Lunar_Lander> not to go too high on the first try
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[22:04] <daveake> too high for what?
[22:04] <daveake> I'd just fly without a cutdown assuming the flight path is ok
[22:04] <Lunar_Lander> yea
[22:04] <radim_OM2AMR> http://habhub.org/predict/#!/uuid=21dbcfc90a34271e76a1e914158926a74ce5898c
[22:04] <Hix> he's only got a 22km tether :)
[22:04] <daveake> :)
[22:05] <Lunar_Lander> yea I know radim_OM2AMR
[22:05] <radim_OM2AMR> so think about it, it's a challenge :-D
[22:05] <Lunar_Lander> yea
[22:05] <mattbrejza> go on Lunar_Lander, change it to 30km ;)
[22:06] <Lunar_Lander> yea
[22:06] <Lunar_Lander> well I told DFS that 22 km is our max altitude
[22:06] <mattbrejza> oh too late then
[22:06] <Hix> call it a programming error
[22:06] <Hix> you screwed the calibration....
[22:06] <daveake> cutdown wire broke
[22:07] <Lunar_Lander> xD
[22:07] <radim_OM2AMR> sure, cutdown failed...
[22:07] <Hix> all manner of things for a maiden that just didn't happen to work out
[22:07] <Lunar_Lander> yea I think I wrote "internal seperation mechanism set for 22000 m"
[22:07] <Hix> someone forgot the bacon etc....
[22:07] <Hix> ahh Lunar_Lander flaw, its external, there you go. it wont work ;p
[22:08] <Lunar_Lander> xD
[22:08] <Hix> and technically its not a mechanism, so two things are wrong already
[22:08] <Hix> bummer 30k it is then
[22:09] <Lunar_Lander> XD
[22:10] <radim_OM2AMR> what size of balloon will you use Lunar ?
[22:11] <Lunar_Lander> 1500 kaymont
[22:11] <Lunar_Lander> but only because I ordered it really long ago from Steve
[22:11] <Hix> there you go, old balloon, another thing that could make it go to 30....
[22:12] <Hix> it's all looking bad kev :)
[22:13] <Lunar_Lander> XD!
[22:14] <radim_OM2AMR> I hope, you'll not disappoint us and you will go to 30k at least
[22:14] <Hix> terible planning, but there you go, them's the breaks :)
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[22:15] <Lunar_Lander> yea
[22:15] <Lunar_Lander> we'll have to see
[22:15] <Lunar_Lander> :)
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[22:28] <Lunar_Lander> OK time for bed
[22:28] <Lunar_Lander> good night!
[22:29] <daveake> nn
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[22:30] <radim_OM2AMR> gn kevin
[22:31] <Hix> Lunar_Lander: gone?
[22:31] <Lunar_Lander> not yet
[22:31] <Lunar_Lander> but in a moment
[22:31] <Lunar_Lander> good night :)
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[22:31] <Hix> ah ok gn
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[22:38] <eroomde> arko: work's been good thanks
[22:38] <eroomde> busy again
[22:38] <arko> hah, figured so
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[22:41] <eroomde> stuff to build
[22:41] <eroomde> had a nice sort out of code and collaborating today
[22:42] <eroomde> got everything onto bitbucket and standardised a few things we'd all been doing in our own way
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[22:44] <Hix> in other news: i just found my 16GB stick with shedloads of stuff i'd lost
[22:44] <eroomde> like finding a time capsule?
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[22:45] <Hix> not that old, but an old friend is back
[22:45] <Hix> time capsule was ide drives in t'loft a few weeks ago
[22:45] <OZ1SKY_Brian> gn all
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[22:46] <Hix> gn
[22:47] <eroomde> tintintin
[22:47] <eroomde> 'it isn't in the tin', in hull
[22:47] <eroomde> not hull really, just somewhere north
[22:48] <eroomde> nernernerners - no knows owners (this time in hull)
[22:49] <arko> eroomde nice
[22:49] <arko> plenty busy
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[23:02] <chrisstubbs> Evening Hix
[23:02] <Hix> yo
[23:02] <chrisstubbs> How are you?
[23:02] <Hix> moderate good
[23:03] <chrisstubbs> haha
[23:03] <Hix> your good self
[23:03] <chrisstubbs> pretty good thanks
[23:03] <chrisstubbs> happy with the success of my ventures into SSDV last night!
[23:03] <chrisstubbs> been asked to do a write up about HABbing for the local radio clubs website
[23:04] <chrisstubbs> essexham.co.uk :)
[23:04] <Hix> essexham? is that something to do with Jimmy's farm?
[23:04] <Hix> ;p
[23:04] <chrisstubbs> haha
[23:05] <chrisstubbs> what have i been missing out on? any news on PICO?
[23:06] <Hix> pico died sun night apparently
[23:07] <chrisstubbs> i heard :(
[23:07] <chrisstubbs> no word on recovery though? i hear wales is a big place!
[23:07] <Hix> still a good effort after the near fatal launch
[23:07] <chrisstubbs> yeah a lot of bobbing about but it was a flight to remember!
[23:08] <Hix> yuo
[23:08] <Hix> yup even
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[23:10] <Hix> right what causes browsers to lose connection after a dns flush? ping works on google.com but browsers are not doing owt [win7, sorry]
[23:10] <mfa298> the issue with pico was lack of listeners for it as it went down so there would be a big area to search
[23:11] <mfa298> last data was at about 1km so you have to guess the landing area, which with its slow rate of descent could be quite a bit area
[23:11] <chrisstubbs> Very big indeed. lets home a kind hearted farmed comes accross it and returns it
[23:11] <chrisstubbs> *farmer
[23:12] <chrisstubbs> *hope... its late...
[23:12] <mfa298> I tend to ignore the odd errors (just realised I put bit rather than big)
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[23:17] <chrisstubbs> spotted this in town last week... http://flic.kr/p/dZKNW9 made me chuckle
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[23:18] <mfa298> useful
[23:19] <mfa298> grrr, I hate trying to spec laptops, there's too much choice.
[23:21] <chrisstubbs> mfa298, there is a lot of weighing up to do
[23:21] <chrisstubbs> what are you thinking?
[23:22] <mfa298> i'm currently on the i3/i5/i7
[23:22] <mfa298> then there's win7/win8
[23:23] <Hix> mfa298: are you UK?
[23:23] <chrisstubbs> i5 seems the best value for money
[23:23] <mfa298> yes
[23:24] <Hix> google edge computer systems in watford
[23:24] <mfa298> I'm certainly thinking the i7 probably isn't worth it, Just found one review for i3/i7 for gaming and the i3 came out on top for most things.
[23:25] <Hix> Thinkpads i5 with normally a warranty of about 12 months ~260 for my X201 mini jobbie....
[23:25] <Hix> jus sayin
[23:25] <mfa298> Hix: I've been looking at pcspecialist
[23:26] <chrisstubbs> i recently went with a i5-3570 budget desktop build. pretty happy with it but im not too sure about mobile processors
[23:27] <chrisstubbs> Domlin recently got a i5 HP from pcworld which he likes. Not a fan of HP myself though
[23:27] <Laurenceb_> http://xn--d-bga.su/
[23:27] <Hix> oh christ
[23:33] <griffonbot> Received email: PhilipM "Re: [UKHAS] Tracker Schematic Review"
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[23:48] <chrisstubbs> Night all
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[00:00] --- Tue Mar 5 2013