highaltitude.log.20090529

[00:00] <Laurenceb> hmm nothing yet
[00:00] <Laurenceb> I presume its going to be on spacenear?
[00:02] <natrium42> yes
[00:03] <natrium42> it looks like they are on the launch field
[00:04] <Laurenceb> SpeedEvil: http://articles.adsabs.harvard.edu//full/1977SAOSR.375.....J/0000013.000.html <- page 13 is useful
[00:05] <Laurenceb> natrium42: I dont see it
[00:05] <SpeedEvil> somewhere I have a scanned copy of sutton
[00:05] <natrium42> Laurenceb, it's on that other site
[00:06] <Laurenceb> EARS?
[00:06] <natrium42> ;)
[00:06] <natrium42> http://www.robertharrison.org/tracker
[00:06] <Laurenceb> oh doh
[00:06] <natrium42> churchill
[00:07] <Laurenceb> hmm its hung firefox :-/
[00:07] <Laurenceb> oh lol
[00:07] <Laurenceb> he had in in his car
[00:08] <natrium42> yeah
[00:08] <natrium42> we were watching it live
[00:08] <natrium42> as he drove to the site XD
[00:08] <natrium42> made one wrong turn :P
[00:08] <Laurenceb> haha looks like they are in the car park atm
[00:09] <Laurenceb> those glitches are a bit odd
[00:09] <natrium42> yah
[00:09] <natrium42> that's not even radio
[00:10] <Laurenceb> some of them could be the gps, especially if its in his car
[00:10] <Laurenceb> but it shouldnt wander around that much
[00:10] <Laurenceb> gps should just lose lock
[00:17] <Laurenceb> hmm the updates stopped - guess they are setting up
[00:18] <natrium42> Laurenceb, haha, i found something interesting in http://code.google.com/apis/chart/formats.html
[00:18] <natrium42> scroll down and view the url of those graphs :)
[00:19] <Laurenceb> lol
[00:20] <natrium42> it graphs that text
[00:20] <Laurenceb> oh as ascii? nice
[00:20] <Laurenceb> Time: 2009-05-29 23:06:57 <- whats going on there
[00:20] <natrium42> yeah, it's an encoding for those graphs
[00:22] <natrium42> Laurenceb, whats that building they are at?
[00:23] <Laurenceb> where edmoore lives :P
[00:23] <natrium42> hehe
[00:23] <natrium42> are they stowing stones at his window?
[00:24] edmoore|away (n=edmoore@pomegranate.chu.cam.ac.uk) left irc:
[00:24] <natrium42> ^ rofl
[00:25] <natrium42> stowing = throwing
[00:25] <natrium42> wtf at my typos
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[00:28] <Laurenceb> aah l spy increasing altitude
[00:28] <Laurenceb> hi edmoore
[00:28] <natrium42> now they are moving towards the tennis courts
[00:30] <Laurenceb> maybe they're lost in the dark :P
[00:30] <natrium42> haha
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[00:33] Nick change: edmoore -> edmoore|in_field
[00:33] <Laurenceb> wow you couldnt ask for better weather
[00:33] <Laurenceb> landing somewhere near Luton
[00:34] Action: Laurenceb sets up his icom
[00:34] <natrium42> :)
[00:34] <natrium42> can you track too?
[00:35] <Laurenceb> probably wont get it
[00:35] <edmoore|in_field> natrium42: any chance you could wipe xaben from the map?
[00:35] <Laurenceb> my room is pretty much a faraday cage
[00:35] <natrium42> edmoore|in_field, yep, sec
[00:36] <natrium42> done
[00:37] <Laurenceb> arg lost my usb/serial :(
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[00:39] <Laurenceb> aha found it - ok I can do some tracking
[00:42] <Laurenceb> my room faces due soush, and its pretty much due north
[00:46] <Laurenceb> how long to launch?
[00:46] <Laurenceb> natrium42: use pcharts
[00:48] <natrium42> cool, looks good
[00:48] <natrium42> now make me a background representing atmosphere :)
[00:50] <Laurenceb> its what I used for the rogallo data display thingy
[00:51] <Laurenceb> edmoore: whats happening?
[00:55] <Laurenceb> -ive altitude?!
[00:55] <Laurenceb> they're burying it
[00:56] <SpeedEvil> No - if you look - the baloon is at a stable altitude
[00:56] <SpeedEvil> it must be a marsh
[00:56] <SpeedEvil> and the car is sinking
[00:56] <SpeedEvil> I hope they got out OK.
[01:00] <Laurenceb> ooh its moving
[01:00] <Laurenceb> awsome, looks like liftoff
[01:01] <Laurenceb> thats the usualy launching area
[01:02] <Laurenceb> maybe they're inflating atm
[01:27] <Laurenceb> come on, launch :P
[01:32] <natrium42> hehe
[01:32] <natrium42> looks like launch occured
[01:33] <natrium42> too many buggy locations, i added a distance cut off to spacenear.us/tracker
[01:33] <natrium42> 100km
[01:36] <Laurenceb> ooh takeoff
[01:37] <Laurenceb> about 2m/s
[01:37] <Laurenceb> ascent rate
[01:38] <Laurenceb> very low windspeed
[01:38] <Laurenceb> this should get high
[01:42] <Laurenceb> right time to setup my icom
[01:42] <Laurenceb> its rather slow
[01:42] <Laurenceb> to say the least
[01:45] <Laurenceb> anyone got freuqency info so I can track?
[01:45] <edmoore|in_field> yo
[01:46] <edmoore|in_field> 434.075
[01:46] <Laurenceb> rtty, 50 baud?
[01:47] <Laurenceb> usb?
[01:47] <edmoore|in_field> yep
[01:47] <edmoore|in_field> ascii 8
[01:47] <edmoore|in_field> 434.071.53 usb
[01:47] <edmoore|in_field> on my icom
[01:47] <rharrison_eee> Launched
[01:48] <Laurenceb> ok
[01:48] <Laurenceb> nothing here but my room is piss poor
[01:48] <rharrison_eee> Laurenceb: Please can you log the data too
[01:48] <Laurenceb> doubt I'll get anything
[01:48] <Laurenceb> I'm in a faraday cage basically, and the window faces south
[01:48] <Laurenceb> its very slow, should go pretty high :P
[01:49] <SpeedEvil> slowly
[01:49] <Laurenceb> hmm 434.071.53 ok thats a bit lower than usual
[01:49] <Laurenceb> nothing here tho
[01:50] <Laurenceb> practically 0 wind
[01:51] <SpeedEvil> how far are you?
[01:51] <Laurenceb> I'm in guildford
[01:51] <SpeedEvil> gonna take a while to get out of ground clutter
[01:51] Action: SpeedEvil is poor on english geography
[01:51] <Laurenceb> but my room faces due south
[01:52] <natrium42> haha, nice loop
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[01:55] <SpeedEvil> what's that - 3m/s ish?
[01:56] <Laurenceb> more like 2
[01:56] <SpeedEvil> just looked at one sample
[01:57] <Laurenceb> dont think its in my radio horizon yet
[01:57] <Laurenceb> needs to reach about 3Km
[01:58] Nick change: KingJ -> kingj
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[01:59] <Laurenceb> hi steve
[01:59] <Laurenceb> what time did it liftoff?
[01:59] <SpeedEvil> You learn something everyday.
[01:59] <SpeedEvil> I thought trumpington was a made-up place.
[02:00] <edmoore|in_field> 1.30
[02:01] Nick change: edmoore|in_field -> edmoore
[02:01] <edmoore> steve and rob are going to head to the car
[02:01] <edmoore> i am going to wait here
[02:01] <Laurenceb> about 1.5m/s ascent rate
[02:01] <RocketBoy> 0:30
[02:01] <RocketBoy> gmt
[02:02] <Laurenceb> hmm
[02:02] Action: Laurenceb predicts burst at 9am
[02:02] <Laurenceb> lol
[02:02] Action: Laurenceb runs to the predictor
[02:03] <Laurenceb> predictor is GMT?
[02:03] Action: SpeedEvil predicts it will reach equilibrium altitude at 45km, and stay there for a week
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[02:04] <Laurenceb> lands in the middle of Aylesbury at 10.30am
[02:04] <Laurenceb> lol
[02:05] Action: Laurenceb notes the similarity of the grey overlay to nuclear blast effect diagrams
[02:06] <Laurenceb> we may be here for some time XD
[02:07] <Laurenceb> ok, it should be over my radio horizon
[02:07] <Laurenceb> and idea on frequency?
[02:09] <Laurenceb> say erm are we missing some data?
[02:10] <Laurenceb> 01:05:49
[02:10] <SpeedEvil> chase updating
[02:11] <Laurenceb> :-S
[02:11] <edmoore> they're going to get in the chase car
[02:11] <edmoore> we lost LoS on my radio
[02:11] <edmoore> it will swing back in a few hours
[02:11] <Laurenceb> ok
[02:11] <Laurenceb> yeah its still low
[02:12] <Laurenceb> prediction has it coming over east london
[02:12] <Laurenceb> I may catch it
[02:13] <rharrison_eee> ok good signal here in car
[02:15] <Laurenceb> what frequency?
[02:15] <edmoore> same as last time laurenceb
[02:15] <edmoore> i could tattoo it to your arm with a rusty compass if you want
[02:15] <Laurenceb> no drift? ok
[02:16] <Laurenceb> heh
[02:16] <edmoore> it's pretty stable
[02:17] <Laurenceb> whats the shift?
[02:28] <edmoore> 425
[02:28] <edmoore> Laurenceb: ping me when asking qs so i get notified
[02:29] <Laurenceb> thanks
[02:29] <Laurenceb> yeah I cant see anything anyway :-/
[02:30] <Laurenceb> just setting up my antenna a bit better
[02:30] <Laurenceb> edmoore: cn you tell me the exact frequency as it appears on fldidig?
[02:31] <edmoore> i can, and it would be useless to you because fldigi doesn't know what my radio is tuned to
[02:31] <edmoore> i have just centered up within the passband and the radio is tuned to 434.072.23
[02:31] <edmoore> usb
[02:32] <Laurenceb> whats your passband freuqency?
[02:32] <Laurenceb> 1.6KHz
[02:33] <edmoore> 3
[02:36] <Laurenceb> nope nothing here :-/ maybe when it comes further south, my moxon is now pointing due east
[02:36] <edmoore> you want it to be pointing north, basically
[02:36] <edmoore> it'll never hear it otherwise
[02:36] <Laurenceb> but its going into a courtyard
[02:36] <edmoore> maybe north north east
[02:37] <Laurenceb> 4 storyies on all sides
[02:37] Action: natrium42 added ascent rate estimation to the tracker
[02:38] <natrium42> rate = 0.7*current_rate + 0.3*rate
[02:39] <Laurenceb> hmm
[02:39] <natrium42> crude, but it should work for now...
[02:39] <Laurenceb> depends how regularly the updates come
[02:40] <SpeedEvil> woo!
[02:41] <Laurenceb> Ghana here we come
[02:41] <natrium42> rofl
[02:41] <natrium42> distance record? :P
[02:42] <Laurenceb> http://www2.b3ta.com/host/creative/55730/1218360858/javelinsmall.jpg
[02:45] <akawaka> woah
[02:45] <akawaka> whats in flight right now?
[02:45] <Laurenceb> teleportation hab
[02:45] <natrium42> icarus ii
[02:45] <natrium42> oh, right
[02:45] <edmoore> ok, i am going to try and get 2hrs sleep
[02:46] <edmoore> hopefully will wake up in time for it to have come back into LoS
[02:46] <akawaka> what kind of balloon
[02:46] <edmoore> 3kg
[02:46] <akawaka> how long is the flight?
[02:47] <SpeedEvil> akawaka: hours yet
[02:47] <SpeedEvil> maybe 6+
[02:47] <akawaka> cool!
[02:47] <SpeedEvil> it's ascending quite slowly
[02:48] <akawaka> tracker page anywhere?
[02:48] <SpeedEvil> spacenear.us/tracker/
[02:53] <Laurenceb> heading for stanstead
[02:53] <Laurenceb> natrium42: your tracker page still accepts the same format?
[02:54] <Laurenceb> - its built into the rogallo code
[02:57] <natrium42> Laurenceb, yep
[02:57] <Laurenceb> cool
[02:58] <Laurenceb> hmm looks like landing around 9am
[03:01] <Laurenceb> wonder if rjharrison is going to stop
[03:02] <natrium42> where's jcoxon?
[03:02] <natrium42> jcoxoneru we need you
[03:02] <Laurenceb> london
[03:04] <Laurenceb> aha hes stopped
[03:04] <Laurenceb> ooh almost 10km
[03:05] <Laurenceb> the prediction is spot on
[03:05] <Laurenceb> I'll bbl
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[04:50] <Laurenceb> back
[04:50] <Laurenceb> zzzz
[04:51] <Laurenceb> what rjharrison doing
[04:51] <Laurenceb> in the woods?
[05:02] <rharrison_eee> hi all
[05:02] <rharrison_eee> at services
[05:05] <rharrison_eee> hey you all in bed
[05:06] <natrium42> no, i am here
[05:06] <natrium42> rharrison_eee, you wiped the car track?
[05:12] <natrium42> ascent rate got higher
[05:12] <edmoore> yo all
[05:12] <natrium42> heya edmoore
[05:14] <natrium42> 28438m
[05:14] <natrium42> 2.1 m/s ascent
[05:14] <natrium42> that's from 4 mins ago
[05:15] <natrium42> come on, more positions :)
[05:15] <edmoore> what's the latest?
[05:16] <edmoore> i can't hear much
[05:16] <edmoore> rharrison_eee: what freq are you tuned to?
[05:17] <natrium42> edmoore, why is rharrison_eee's carr in some trees off the road?
[05:17] <natrium42> carr=car
[05:17] <Laurenceb> whats the freuquency now?
[05:18] <natrium42> nvm
[05:18] <natrium42> he's on the way
[05:18] <edmoore> looks like he's in a service station to me
[05:19] <Laurenceb> I may have something on .055
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[05:22] <Laurenceb> bah wish I had an extension cable
[05:25] smealum (n=smealum@smea.servebeer.com) got netsplit.
[05:26] <edmoore> i can hear rtty
[05:27] <edmoore> faitnly
[05:27] <edmoore> think it's swinging back into view from this window
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[05:30] <JoshAshby> so theres a debate going on about if we need clearance for a launch of a high altitude balloon that is less than 6 pounds, and fits all the requirements
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[05:33] <Laurenceb> grr stupid RF proof insulation they use in university buildings
[05:34] <Laurenceb> burst estimator says 42Km
[05:34] <Laurenceb> should be exciting
[05:37] <Laurenceb> landing around 8 near bedford
[05:37] <edmoore> sounds about right
[05:37] <edmoore> i really want to see how the balloon behaves up top
[05:38] <edmoore> it's starting to decode again
[05:38] <Laurenceb> ah cool
[05:38] <edmoore> no complete strings yet, but getting there
[05:40] <Laurenceb> the way its moving in arcs is interesting
[05:40] <Laurenceb> maybe its the payload twisting and steering it slightly - as the winds so low
[05:41] <Laurenceb> or some sort of asymmetry in the envelope
[05:41] <Laurenceb> hmm over 30Km
[05:42] <natrium42> ascent rate 1.6 m/s
[05:42] <Laurenceb> few more Km
[05:42] <Laurenceb> bah thats not accurate :P
[05:42] <natrium42> ascent rate of chase car 0.5 m/s :)
[05:42] <Laurenceb> ascent rate is 2.15
[05:42] <natrium42> YOU'RE not accurate
[05:42] <Laurenceb> - averaged over the entire flight
[05:42] <natrium42> haha
[05:43] <natrium42> now chase car is descenging
[05:43] <natrium42> *descending
[05:43] <natrium42> maybe a downhill
[05:43] <Laurenceb> prediction is holding up well
[05:43] <Laurenceb> only a few Km out atm
[05:45] <Laurenceb> he needs to turn off north of luton
[05:48] <Laurenceb> edmoore: sorry to be a apin:P what frequency are you on now?
[05:48] <edmoore> 434.074.26
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[05:52] <edmoore> ascent rate is all over the place
[05:53] <Laurenceb> bah nothing :-/
[05:53] <Laurenceb> its cuz its not done right :P
[05:53] <edmoore> i think the gps might be suffering a bit too
[05:54] <edmoore> it seems to be warming up quite quickly too, according to payload thermal data
[05:54] <Laurenceb> it should be heading through stevenage
[05:54] <Laurenceb> according to the prediction
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[05:54] <Laurenceb> - it seems to be starting to deviate
[05:54] <Laurenceb> whats the temperature?
[05:54] <edmoore> 9.5
[05:54] <edmoore> says prob
[05:54] <edmoore> probe*
[05:55] <Laurenceb> not bad
[05:55] <edmoore> signal has gone weak for me suddenly
[05:55] <Laurenceb> is there a battery voltage?
[05:55] <edmoore> dunno
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[05:57] <rharrison_eee> no bat v
[05:57] <Laurenceb> interesting place its heading over
[05:57] <Laurenceb> housing estate in a wood
[05:58] <rharrison_eee> Laurenceb: r u tracking?
[05:58] <Laurenceb> nope
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[05:58] <rharrison_eee> edmoore: result?
[05:58] <Laurenceb> need an extension cable to go outside :P
[05:58] <rharrison_eee> oh ok
[05:58] <edmoore> rharrison_eee: am getting uite a few strings through
[05:58] <rharrison_eee> cool
[05:59] <edmoore> seems to be only doing 1m/s though
[05:59] <edmoore> sometimes less
[06:00] <Laurenceb> yeah... ascent rate is dropping off :-/
[06:01] <Laurenceb> maybe we have invented the latex superpressure balloon
[06:02] <edmoore> improbable
[06:02] <edmoore> although... 0.3m/s :s
[06:03] <edmoore> am hoping this is a sticky lassen
[06:03] <Laurenceb> could be a temperaturwe thing
[06:04] <edmoore> the sun should only help that, i'd have thought
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[06:05] <akawaka__> what time is it there? 6am?
[06:05] <Laurenceb> yeah
[06:05] <edmoore> i might pop back for a nap
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[06:07] <Laurenceb> odd behaviour
[06:07] <Laurenceb> the windspeed keeps varying by quite a lot
[06:07] <rharrison_eee> ok
[06:07] <rharrison_eee> yep
[06:07] <Laurenceb> yet its in the stratosphere
[06:08] <rharrison_eee> any pred on landing?
[06:09] <Laurenceb> somewhere in a triangle between watform, aylesbury and luton
[06:09] <Laurenceb> I'd say
[06:09] <Laurenceb> but its deviating from a prediction now
[06:10] <edmoore> er......
[06:11] <edmoore> what the hell is up with that gps
[06:11] <edmoore> it's descending at about 0.5m/s
[06:11] <Laurenceb> we have a floater
[06:12] <Laurenceb> 10m lower than a few minutes ago
[06:12] <edmoore> about 0.1m/s descent
[06:12] <Laurenceb> yep its certainly a bit lower
[06:12] <edmoore> now going back up
[06:13] <Laurenceb> lol
[06:13] <Laurenceb> 742 was the highest I saw
[06:13] <edmoore> it's now drifting pretty fast
[06:14] <Laurenceb> ok... same height as 5 minutes ago
[06:15] <Laurenceb> theres some weird stuff going on in the stratosphere
[06:15] <edmoore> climbing again
[06:16] <Laurenceb> if its going to 40Km like this... it may take some time
[06:16] <edmoore> it might break out of this altitudinal limbo
[06:17] <edmoore> seems to be going again
[06:18] <Laurenceb> wtf
[06:18] <Laurenceb> its not ment to be that windy up there
[06:20] <Laurenceb> ok it just took 3rd spot in the UK records
[06:20] <edmoore> ok that's more like it
[06:21] <edmoore> the aliens have finished probing it
[06:21] <edmoore> good strong signal all of a sudden, and more nominal ascent rate
[06:21] <edmoore> 1.6m/s
[06:21] <Laurenceb> heh
[06:21] <Laurenceb> maybe some sort of stratospheric turbulence
[06:21] <Laurenceb> its heading closer to me now
[06:22] <Laurenceb> might turn on the icom for another go
[06:22] <edmoore> it's slowed down again. something odd is at play here
[06:22] <edmoore> maybe the latex is drawing in stops and starts
[06:22] <edmoore> now it's gone negative
[06:23] <edmoore> this. is. weird.
[06:24] Nick change: edmoore -> edmoore|call_me
[06:25] <Laurenceb> for hot action?
[06:30] <Laurenceb> passed 33Km
[06:32] <Laurenceb> ooh its the blown up oil depot
[06:37] <natrium42> come on rharrison_eee, get it above 35 801
[06:37] <natrium42> to get into top 10 :)
[06:38] <rharrison_eee> how weird
[06:39] <Laurenceb> 38.236 is the record
[06:40] <natrium42> edmoore|call_me, getting any signal?
[06:46] <natrium42> main screen turn on?
[06:48] <Laurenceb> just overshot CUSF record
[06:48] <Laurenceb> now 2nd in the UK records :P
[06:48] <natrium42> cool
[06:50] <natrium42> going down a bit again
[06:52] <natrium42> and up again
[06:52] <Laurenceb> where is rjharrision?
[06:53] <natrium42> in UK
[06:53] <Laurenceb> cant see green icon on the mp
[06:53] <natrium42> yeah, i messed it up somehow
[06:53] <natrium42> but you can now click on the info widget
[06:54] <natrium42> and it will center the map to the last position
[06:54] <Laurenceb> info widget?
[06:55] <natrium42> the ones on the right with vehicle info
[06:55] <Laurenceb> doesnt do anything for me
[06:55] <natrium42> are you on spacenear?
[06:56] <natrium42> robert didn't update his tracker yet
[06:56] <Laurenceb> yes
[06:56] <natrium42> hmm, try refreshing
[06:56] <Laurenceb> any idea where he is?
[06:57] <natrium42> at the outskirts of luton
[06:57] <natrium42> actually
[06:57] <natrium42> no
[06:57] <natrium42> heis where the balloon crossed his path
[06:57] <natrium42> roughly
[06:58] <Laurenceb> aha
[06:58] <Laurenceb> got it
[06:58] <Laurenceb> it was giving incorrect positions for him before
[06:58] <Laurenceb> hehe passing new ground
[06:59] <Laurenceb> we'll be in wales at this rate
[06:59] <natrium42> haha
[07:06] <sgstair> :)
[07:08] <natrium42> ohai sgstair
[07:08] Action: sgstair hides
[07:09] <natrium42> :P
[07:20] <Laurenceb> rjharrison is chasing it
[07:21] <natrium42> hehe
[07:24] <natrium42> whoa 1332.9 m/s
[07:24] <natrium42> altitude was 0 :P
[07:26] <Laurenceb> or jp aerospace took over
[07:30] <natrium42> :)
[07:30] <natrium42> damn, i hope rharrison_eee took some strong coffee with him
[07:30] <Laurenceb> edmoore|call_me: ping
[07:31] <Laurenceb> think you need to adjust your antenna/scanner
[07:31] <Laurenceb> ah that did the trick :P
[07:32] <natrium42> burst?
[07:32] <Laurenceb> omg
[07:32] <Laurenceb> looks like it :(
[07:33] <natrium42> highest was 33579m
[07:33] <edmoore|call_me> yep
[07:33] Nick change: edmoore|call_me -> edmoore
[07:33] <edmoore> burst
[07:33] <natrium42> no, wait 33602 m
[07:33] <natrium42> plus minus
[07:34] <edmoore> it's coming down cold and fast
[07:34] Action: natrium42 is really looking forward to the pics
[07:35] <edmoore> yeah
[07:35] <natrium42> did sunset occur?
[07:35] <edmoore> sunrise?
[07:35] <natrium42> oops
[07:35] <natrium42> yeah, dyslexia
[07:37] <natrium42> edmoore?
[07:37] <natrium42> are we going to get shots of sunrise????
[07:38] <natrium42> :D
[07:39] <natrium42> descent rate looks good
[07:39] <Laurenceb> shame about it bursting
[07:39] <Laurenceb> something went a bit screwy with the envelope
[07:39] <natrium42> it's so damn expensive too
[07:40] <natrium42> more expensive than the zp balloons i got
[07:40] <Laurenceb> rjharrison: get in your car and try to catch it !
[07:41] <edmoore> natrium42: hop esp
[07:41] <Laurenceb> quick
[07:41] <edmoore> hope so*
[07:41] <natrium42> :)
[07:41] <edmoore> yeah i think there's too much diffusion
[07:41] <Laurenceb> rjharrison_eee: quick !
[07:41] <edmoore> just gotta overfill on the ground or it'll never make it
[07:41] <Laurenceb> yeah prob diffusion at least partly
[07:42] <Laurenceb> then the envelope popped due to UV/atomic oxygen ect
[07:42] <Laurenceb> all sorts of nasty stuff up there
[07:43] <edmoore> gotta keep that vertical rate up
[07:43] <edmoore> right, i have lost it
[07:43] <edmoore> gonna pack up here
[07:43] <edmoore> bbl
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[07:58] Action: sgstair watches the hunt unfold.
[07:58] <sgstair> dataset is pretty neat on google earth
[08:03] <natrium42> whoops, i forgot to uncomment distance rejection code
[08:03] Action: natrium42 deletes buggy location
[08:04] <sgstair> :)
[08:04] <Laurenceb> think its down
[08:04] <Laurenceb> probably in those houses :-S
[08:04] <sgstair> seems possible, yeah.
[08:06] <Laurenceb> hang on who were those points from rjharrison was driving
[08:06] <natrium42> sgstair, this is all with a 10 mW transmitter
[08:06] <natrium42> pretty incredible, isn't it?
[08:06] <sgstair> ah, that would explain why the signal died before it got close to the ground.
[08:07] <sgstair> yes, but surface to air (or back) takes a lot less power than surface to surface
[08:08] <natrium42> got final location, cool
[08:08] <natrium42> someones backyard XD
[08:09] <sgstair> I'm sure someone is thrilled :P
[08:10] <sgstair> at least it wasn't the pool.
[08:10] <natrium42> they don't have pools in UK
[08:10] <natrium42> :P
[08:10] <natrium42> too rainy
[08:10] <sgstair> er. Yeah they do
[08:10] <sgstair> just a few houses away ;)
[08:11] <natrium42> hmm
[08:11] Action: natrium42 waits for the payload to start moving into the house
[08:12] <Laurenceb> due south may be a pool
[08:12] <natrium42> whoa
[08:12] <sgstair> natrium42: that would be funny :)
[08:12] <sgstair> payload moved a km or so west while you weren't looking ;)
[08:13] <Laurenceb> it was stolen by dbirds
[08:13] <natrium42> yep, already taken care of, refresh if you would like
[08:13] Action: natrium42 hopes rjharrison takes his gps unit so that we can watch him walk to the payload
[08:13] <sgstair> yes, watching the google feed so already saw :P
[08:14] <sgstair> *google earth feed.
[08:14] <natrium42> :)
[08:14] <sgstair> I should be asleep already :P
[08:15] <natrium42> it's only midnight in your tz
[08:15] <sgstair> yes.
[08:15] <sgstair> I actually adhere to somewhat of a schedule out here ;)
[08:15] <natrium42> pfft
[08:16] <Laurenceb> hmm its a bit high up
[08:16] <Laurenceb> hope its not in that tree
[08:17] <natrium42> :S
[08:17] <sgstair> google earth thinks it's below the surface of the ground.
[08:17] <sgstair> so I'm not so sure about that.
[08:19] <sgstair> <suspense>
[08:19] <Laurenceb> hmm obviously the wrong geoid
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[08:25] Action: sgstair needs to sleep. :) will see how things went tomorrow.
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[08:29] <natrium42> nite sgstair
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[08:39] <g8khw-iPhone> We got it back
[08:39] <natrium42> \o/
[08:39] <natrium42> is it intact?
[08:40] <Laurenceb> g8khw: you with robert?
[08:40] <Laurenceb> who was tracking after it burst?
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[08:45] <g8khw-iPhone> We were in the car - yes all in one piece
[08:46] <g8khw-iPhone> I'm in the car with Robert - juust heading for some breakfast
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[08:46] <jcoxon> hey all
[08:47] <jcoxon> updates?
[08:47] <natrium42> they got it
[08:47] <g8khw-iPhone> Yeah we got it back
[08:47] <natrium42> jcoxon, where have you been??
[08:48] <jcoxon> unfortunately wasn't avaliable
[08:49] <jcoxon> Max alt
[08:49] <jcoxon> ?
[08:49] <natrium42> 33602 m
[08:50] <jcoxon> oh well
[08:52] <jcoxon> nearly there
[08:52] <natrium42> :)
[08:53] <jcoxon> pics will good
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[08:53] <natrium42> sunrise :)
[08:56] <jcoxon> okay,will be back later
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[10:58] <DanielRichman> Woohoo! 4 packages just arrived in the post for me ...
[11:01] <DanielRichman> this atmega is a beast
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[11:22] <SpeedEvil> congrats all
[11:23] Action: SpeedEvil wakes up.
[11:31] <Futurity> Hi
[11:31] <Futurity> i unfortunately missed out on helping out last night
[11:31] <Futurity> only just got the message on my mobile
[11:32] Action: SpeedEvil realises he almost predicted something.
[11:33] <Futurity> SpeedEvil: did you take part yesterday?
[11:33] <SpeedEvil> ***SpeedEvil predicts it will reach equilibrium altitude at 45km, and stay there for a week
[11:33] <SpeedEvil> it did hover for a bit
[11:34] <SpeedEvil> not significantly
[11:34] <Futurity> yep, just spoke to Rob
[11:34] <Futurity> a very tired Rob
[11:35] <Futurity> i left home for work yesterday with a headache and forgot to take my wallet and mobile. Car broke down with a broken suspension spring
[11:35] <Futurity> told I couldn't drive it home
[11:35] <SpeedEvil> :/
[11:35] <Futurity> had to wait Soooooooo long for RAC and a final tow back home
[11:36] <SpeedEvil> looking expensive?
[11:36] <Futurity> finally got home and didn't have the energy to turn on the mobile (in case more problem encountered)
[11:36] <Futurity> and didn't get Robs launch message
[11:36] <Futurity> Catelog of errors
[11:36] <Futurity> shown't be too bad
[11:36] <Futurity> but over £100 for sure
[11:37] <Futurity> more inconvenient
[11:37] <SpeedEvil> wonder if it's an idea to replace other spring too.
[11:37] <SpeedEvil> as a failure at speed...
[11:37] <Futurity> i did say that to them
[11:37] <Futurity> said that if it looks dodgy in anyway shape or form to replay it as well
[11:37] <grummund> hi
[11:38] <Futurity> yep its one of those nasty things to break
[11:38] <Futurity> especially on a motor way
[11:38] <Futurity> and i think it went before i drove up the M11 at 80
[11:38] <Futurity> close shave
[11:38] Action: grummund had spring failure too... (earlier this year)
[11:38] <SpeedEvil> some breakages are not visible without ultrasound/... though - I don't know if springs typically are.
[11:38] <Futurity> you know when a spring has gone
[11:38] <grummund> always a good idea to change both sides together
[11:39] <SpeedEvil> I mean - you know when it's gone
[11:39] <Futurity> normally they look mangled
[11:39] <Futurity> well this one did
[11:39] <SpeedEvil> but - it may not be visible a week before it goes
[11:39] <SpeedEvil> (as I understand the failure)
[11:39] <Futurity> yep i've asked them to do both if the working one looks at all bad
[11:39] <Futurity> 8 - 9 year old car
[11:39] <Futurity> and starting to rust :(
[11:39] Action: SpeedEvil passes Futurity a can of paint.
[11:40] <Futurity> oh i see
[11:40] <Futurity> ultrasound to detect before it breaks
[11:40] <SpeedEvil> works well IME.
[11:40] <Futurity> does anyone know if this anti rust paint works?
[11:40] <Futurity> the stuff you paint on to rust and it keeps the rust in place and stops more rust forming?
[11:40] <SpeedEvil> yes - fairly well - IME removing rust, proper undercoat and paint is better
[11:41] <Futurity> yep
[11:41] <SpeedEvil> but that's more 'there are rust spots I want to stop developing'
[11:41] <Futurity> told at the garage that they is very little door left at the bottom
[11:41] <SpeedEvil> rather than 'there are metal spots'...
[11:41] <Futurity> so if i strip it down they'll be a hole ;)
[11:41] <Futurity> yep
[11:42] <Futurity> wondering if there is any metal there ;)
[11:42] <Futurity> btw anyone know about the FSK / transmitters that Rob, Steve and Ed use?
[11:42] <Futurity> Ed says they use FSK
[11:42] <Futurity> but this would be on to of an SSB signal?
[11:42] <SpeedEvil> radiometrix
[11:43] <SpeedEvil> they are 'FM' transmitters
[11:43] <Futurity> oh i see
[11:43] <SpeedEvil> but used to transmit only two tones 400hz apart
[11:43] <Futurity> and SSB if a form of FM?
[11:43] <SpeedEvil> these go into the passband of an SSB tranciever
[11:43] <grummund> afaict it's FSK audio on top of UHF FM.
[11:43] <SpeedEvil> when they emerge as different pure tones
[11:44] <SpeedEvil> then this is demodulated by fldigi - in software
[11:44] <Futurity> i see
[11:44] <SpeedEvil> connected to a computer
[11:44] <Futurity> so they transmit one tone on one frequency and another on the other frequency?
[11:44] <SpeedEvil> yes
[11:44] <Futurity> then combine them to get a single audio single
[11:44] <SpeedEvil> well - no
[11:45] <SpeedEvil> they transmit on 434.0751 for '0'
[11:45] <SpeedEvil> 434.0755 for '1'
[11:45] <Futurity> oh i see
[11:45] <Futurity> so only a very slight difference in frequency
[11:46] <Futurity> rather than a whole new signal
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[11:46] <SpeedEvil> the reciever is tuned to 434.065 - and outputs 1.1KHz for '0' and 1.5KHz for '1'
[11:46] <Laurenceb> hi
[11:46] <SpeedEvil> hi
[11:46] <Laurenceb> any photos up yet?
[11:46] <SpeedEvil> not reported
[11:46] <SpeedEvil> suspect they are sleeping
[11:46] <Laurenceb> heh ok
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[11:46] <Futurity> Rob said a few minutes ago that he was almost back at Cambridge
[11:46] <SpeedEvil> or that
[11:46] <Laurenceb> ok
[11:47] <Laurenceb> SpeedEvil: I had a bit more of a look at my 7 tube rocket design
[11:47] <Futurity> he said he was going to upload photos later on (not sure if from Cambridge or Leeds)
[11:47] <Laurenceb> came up with a better attitude control plan
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[11:48] <jcoxon> hey all
[11:48] <Laurenceb> 1st stage -> diff throttling + He venting for roll control, 2nd stage -> diff throttling on one axis +peroxide for the other two, third stage = peroxide all axes
[11:48] <DanielRichman> morning
[11:49] <jcoxon> looks like an exciting flight last night
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[11:49] <Futurity> Hi j
[11:49] <Laurenceb> very odd
[11:49] <DanielRichman> sbasuita, 4 packages arrived today :)
[11:49] <Laurenceb> it was oscillating in altitude
[11:49] <sbasuita> DanielRichman, we still ok for tomorrow?
[11:49] <Futurity> is there a tracking map like the Sunday launch?
[11:50] <sbasuita> Oh yeh, how was the midnight launch?
[11:50] Action: SpeedEvil is mostly asleep
[11:50] <jcoxon> http://spacenear.us/tracker
[11:50] <Laurenceb> heh
[11:50] <Laurenceb> SpeedEvil: you can run a pipe down to nick peroxide from the thrid stage (cental tank)
[11:50] <Futurity> interesting flight path
[11:51] <DanielRichman> sbasuita, 4 packages: avr programmer, a beast of an atmega, some components including your battery holders (C) and the phone arrived
[11:51] <Laurenceb> http://hardyadvancedcomposites.org/tube_sales.aspx
[11:51] <sbasuita> DanielRichman, good
[11:52] <sbasuita> Looks like the balloon had a fortunate aversion to the M25 zone
[11:52] <SpeedEvil> Laurenceb: sounds like a lot of piping - but need cod
[11:52] <SpeedEvil> coffee
[11:53] <Laurenceb> we think it was losing helium by diffusion through the envelope
[11:53] <Laurenceb> SpeedEvil: with some nice CNC work with the bulkhead, maybe not
[11:54] <Laurenceb> also you could have the distribution to the solenoid valves inside the ullage space, so it would be light plastic pipe
[11:55] <SpeedEvil> hmm
[11:55] <SpeedEvil> HTP and peroxide pipe may be an issue
[11:55] <Laurenceb> then the valves themselves are machines into the bulkhead
[11:55] <SpeedEvil> plastic pipe
[11:56] <Laurenceb> yeah... theres got to be plastic thats compatible
[11:56] <sbasuita> DanielRichman, I'm OK to come round tomorrow right?
[11:56] <DanielRichman> afaik
[11:57] <sbasuita> DanielRichman, what time
[11:57] <SpeedEvil> Laurenceb: you need to generally wash it lots to avoid surface contamination.
[11:57] <SpeedEvil> wash in peroxide
[11:57] <SpeedEvil> to remove
[11:58] <SpeedEvil> afk - coffee
[11:58] <Laurenceb> yeah
[11:58] <Laurenceb> I'll have to do a diagram
[12:01] <Futurity> How far have the various rocket projects progressed? Anyone had a launch yet?
[12:01] <sbasuita> Futurity, there was a ground launch
[12:01] <Futurity> multistage?
[12:01] <Futurity> or rocket motor test?
[12:02] <Futurity> sorry for the lame questions, only foiund this channel last week
[12:02] <sbasuita> Futurity, http://www.srcf.ucam.org/cuspaceflight/martlet.php
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[12:04] <Futurity> very cool :)
[12:05] <jcoxon> morning Ralph_W0RPK
[12:05] <Laurenceb> Futurity: what rocket project :P
[12:05] <Futurity> well any
[12:06] <Laurenceb> heh, I've been playing about with a design
[12:06] <Laurenceb> for launching cubesats into LEO
[12:06] <Futurity> i've notice rocket conversations here and wondered if everything was still at the design stage or if anyone had an successful launches yet
[12:07] <Laurenceb> IMO if you want to progress beyond the standard amateur stuff you need to put some serious design and planning work in
[12:07] <Futurity> no i agree
[12:08] <Laurenceb> CU spaceflight have put in tons of work and they're just going for suborbital
[12:08] <Laurenceb> balloons are a bit nice to work with :P
[12:08] <Futurity> no i totally agree
[12:08] <Laurenceb> *nicer
[12:08] <Laurenceb> armadillo aerospace are interesting to read up on
[12:08] <Futurity> i just wondered if any of the multistange rockets had been built / tested yet
[12:08] <Futurity> *multistage
[12:09] <Futurity> sbasuita: have you managed to get Level 2 certification for the marlet project yet?
[12:10] <Futurity> *martlet
[12:10] <sbasuita> Futurity, I'm not involved
[12:11] <Laurenceb> whats level 2 certification?
[12:12] <Futurity> on the martlet site they mention that they need to get this certification to allow them to use bigger L-Class motors
[12:12] <Laurenceb> ah ok
[12:12] Action: Laurenceb would use this : http://www.boatshop24.co.uk/MDcwMTA4fnNkb2UwMQ==-LUXE_MOTOR_110_.html
[12:13] <sbasuita> hehe
[12:13] <Laurenceb> international waters ftw
[12:17] <Laurenceb> actually.. isnt it flying an iraqi flag?
[12:17] <Laurenceb> prob best to remove that first :P
[12:20] Nick change: kingj -> KingJ
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[12:29] <DanielRichman> ok. So got an ISP programmer but I have no idea which way around it should be cause pin1 is not marked :X
[12:30] <Laurenceb> lookup the pinout
[12:30] <Laurenceb> look for the tab
[12:31] <DanielRichman> got the pinout
[12:31] <DanielRichman> you suggesting I get a multimeter on it?
[12:54] <SpeedEvil> yeah - both Laurenceb and me are thinking of orbital rockets.
[12:54] <SpeedEvil> But so far away from it ATM that it's not funny.
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[13:02] <DanielRichman> Time to wire up this new avr
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[13:08] <edmoore_> hi all
[13:08] <edmoore_> steve and rob are on the road, heading home
[13:09] <edmoore_> some really bizarre behaviour to analyse
[13:09] <SpeedEvil> hopefully the pics wil reveal all
[13:09] <SpeedEvil> teeny leak?
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[13:10] <edmoore_> doesn't explain up-down-up-down
[13:10] <SpeedEvil> diddn't see it all
[13:10] <edmoore_> it looks for all the world like it got caught in some kind of vortex/thermal/something or other
[13:10] <SpeedEvil> I was asleep at about 12km I think
[13:11] <edmoore_> and couldn't break out for lack of lift
[13:11] <SpeedEvil> interesting
[13:11] <edmoore_> i've never come across that kind of effect at 32km though
[13:11] <SpeedEvil> umm
[13:11] Action: SpeedEvil vaguely recalls something on that sort of thing.
[13:12] <SpeedEvil> no - I think that was lower
[13:12] <SpeedEvil> about attempts at 60000ft in a glider
[13:13] <edmoore_> a more inflated balloon could probably have punched through whatever it was, but ofcourse this was intentionally only just positively buoyant.
[13:14] <edmoore_> greetings Ralph_W0RPK
[13:15] <SpeedEvil> Ah ye
[13:15] <SpeedEvil> s
[13:15] <SpeedEvil> http://en.wikipedia.org/wiki/Perlan_Project
[13:15] <Ralph_W0RPK> Regards -- I take it the flight is over(?)
[13:17] <SpeedEvil> However, at the outer boundary of the Polar Vortex, in Winter, the Stratospheric Polar Night Jet exists. Its wind field can join with the wind field of the Polar Jet Stream. The result is a wind which increases with altitude through the tropopause and upward to 100,000 feet or above. When this conjunction of winds occurs over a barrier mountain, standing mountain waves will propagate through that entire altitude range.
[13:17] <SpeedEvil> yes
[13:17] <SpeedEvil> around 9 today it landed
[13:17] <edmoore_> Ralph_W0RPK: yes, they recovered the payload a few hours ago
[13:17] <SpeedEvil> no pictures as yet
[13:17] <edmoore_> driving back home, then to start figuring out what exactly happened
[13:18] <Laurenceb> SpeedEvil: interesting
[13:18] <Laurenceb> hmm maybe this explains the odd pattern it was tracing out
[13:18] <Ralph_W0RPK> Thanks -- I look forward to the next ARHAB altitude record attempt.
[13:18] <Laurenceb> and the fluctuating windspeed
[13:19] <Laurenceb> yeah I bet it was stuck in some gravity wave/ boudary layer system
[13:19] <edmoore_> would the period of that correlate roughly with our obervations, Laurenceb ?
[13:20] <Laurenceb> I noticed some high altitude gravity wave cloud formations at 5am
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[13:20] <Laurenceb> but they would be lower
[13:20] <Laurenceb> edmoore: pretty much spot on for the period of those weird spirals it seemed to be tracing out
[13:20] <Laurenceb> the altitude bvariation was the same period approx?
[13:21] <edmoore_> you tell me
[13:22] <Laurenceb> I think so
[13:22] <Laurenceb> hmm tropospheric waves can propogate up into the stratosphere
[13:23] <Laurenceb> there was lots of wave clouds over the area north of me around 5am
[13:24] Action: SpeedEvil wonders why it burst then
[13:24] <SpeedEvil> I assume the actual turbulence was very ssmall
[13:25] <Laurenceb> it prob burst due to UV+atomic oxygenb and other free radicals/nasties
[13:26] <Laurenceb> it had be above 30Km for about 2 hours
[13:27] <Laurenceb> hmf there was an exam question where you had do derive all this :-/
[13:27] <Laurenceb> I've forgotten how :(
[13:28] <Laurenceb> something about ~20minutes springs to mind
[13:28] <SpeedEvil> damn.
[13:28] <SpeedEvil> I knew I should have helped with this launch.
[13:28] Action: SpeedEvil looks at the bottle of nivea SPF15
[13:29] <Laurenceb> http://www.physics.uwo.ca/~whocking/p103/grav_wav.html
[13:30] <Laurenceb> "Typically the Brunt-Vaisala period in the troposphere is about 10 minutes. In the stratosphere, it is about 5 minutes."
[13:31] <Laurenceb> "In the troposphere, the velocity amplitudes of these waves are a few centimetres per second, but in the mesosphere they can have amplitudes of several metres per second"
[13:31] <Laurenceb> sounds like a likely explanation
[13:37] <Laurenceb> actually looking at the position, its not really spirallying that much
[13:38] <Laurenceb> but theres certainly more than one stratospheric air current, and its quite strong
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[13:53] <Laurenceb> so... as it got past about 30Km it started to lose helium probably by diffusion, then it got causght in gravity waves
[13:58] <Laurenceb> anyway, photos photosd !!!
[14:10] <Laurenceb> latex envelopes get stupidly thin
[14:10] <Laurenceb> its no wonder weird stuff happens
[14:23] <Laurenceb> a few microns thick
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[15:24] <Laurenceb> SpeedEvil: ping
[15:25] <SpeedEvil> pog
[15:25] <Laurenceb> hi, dont laugh
[15:25] <Laurenceb> I was looking into solar thermal airships as well
[15:25] <Laurenceb> itd actually possible in theory
[15:26] <Laurenceb> - if you forget the issues like focussing and nozzel design
[15:26] <SpeedEvil> you meaan for propulsion?
[15:26] <Laurenceb> then a hydrogen filled airship can reach escape veliocity
[15:26] <Laurenceb> yes
[15:27] <SpeedEvil> umm
[15:27] <Laurenceb> park it at 40Km poining up and fire the engine :P
[15:27] <SpeedEvil> drag?
[15:27] <Laurenceb> the trick is to stay slow
[15:27] <SpeedEvil> yeah - then gravity losses eat you
[15:27] <Laurenceb> so you ascent at ~200m/s for 20 minutes
[15:27] <SpeedEvil> 200m/s is what Q?
[15:28] <SpeedEvil> Don't think it's very small - for a thing tens of metres in diameter - say
[15:28] <Laurenceb> about 0.6
[15:29] <SpeedEvil> Pa?
[15:29] <Laurenceb> mach number
[15:29] <Laurenceb> oh Q
[15:30] <Laurenceb> I looked up some data for airship bodies and got ~5N total drag at 40Km
[15:31] <Laurenceb> its not quite that simple as you have some residual lift from the hydrogen
[15:31] <Laurenceb> and the denity drops off fast, so you want to accelerate
[15:31] <Laurenceb> *density
[15:34] <Laurenceb> for ISP=1000 and 2.5Um mylar (about the thinnist aluminsed mylar) you can reach escape velocity
[15:36] <Laurenceb> just have to stay slow for 50Km or so
[15:43] <DanielRichman> Laurenceb, when you used the T68i did you give the UART 5v or 3.3v? Do you think it would matter If I gave it 5?
[15:45] <Laurenceb> no
[15:45] <Laurenceb> dont
[15:45] <DanielRichman> gotta convert it to 3.3v then? fun
[15:45] <Laurenceb> try it with 3.3v, you might just fry it with 5, hopefully not, but its probably best to avoid
[15:46] <Laurenceb> use some transistors
[15:46] <Laurenceb> I'd try it first with a datacable... if you have one of course :P
[15:46] <DanielRichman> transistors? but there will still be some 5v going base to emitter
[15:46] <DanielRichman> potential dividor?
[15:48] <Laurenceb> yeah
[15:48] <Laurenceb> its one solution- you could power it off the phone
[15:48] <DanielRichman> hmm
[15:49] <Laurenceb> but it'd flatten the battery if you left it plugged in
[15:49] <DanielRichman> I'll stick to potential dividors :)
[15:49] <Laurenceb> yeah you only need one on the serial line to the phone
[15:50] <DanielRichman> k. Recommended values? in the range of the 10k or lower?
[15:51] <Laurenceb> yeah
[15:51] <Laurenceb> a few K
[15:52] <Laurenceb> hmm actually.. I seem to remember something about 2.8V
[15:52] <Laurenceb> I'd try and get 2.8V out
[15:52] <Laurenceb> can you stick a multimeter on the phone?
[15:54] <Laurenceb> and find the voltage on tx relative to gnd?
[15:55] <DanielRichman> I'll try that
[15:56] <DanielRichman> It's 2.75
[15:59] <Laurenceb> ha I remebered right :P
[15:59] <Laurenceb> ok, you need to make a divider for that voltage
[16:00] <Laurenceb> also you need to make a divider to increase the voltage on the tx from phone
[16:00] <DanielRichman> Nah, not bothering with the tx from the phone
[16:00] <DanielRichman> but yeah
[16:01] <DanielRichman> how about I just divide 5v in half? two 10k resistors?
[16:03] <sbasuita> Dawn launch pictures anybody?
[16:03] <Laurenceb> should work, rather high impedance.. but it may be ok
[16:03] <Laurenceb> yeah where are ze photos
[16:03] <DanielRichman> Laurenceb, how about 2k7s then?
[16:04] <sbasuita> DanielRichman, can't you calculate what you need?
[16:04] <DanielRichman> sbasuita, I'm cutting 5v in half; which means I need equal resistors
[16:04] <DanielRichman> the ratio must be 1:1
[16:04] <DanielRichman> but that's about it
[16:04] <Laurenceb> sounds good
[16:05] <DanielRichman> Laurenceb, 2k7s sounds good? ok
[16:05] Action: DanielRichman starts building it
[16:05] <DanielRichman> well, not really building
[16:05] <DanielRichman> but yeah.
[16:05] <DanielRichman> it's test time
[16:08] <Laurenceb> any luck?
[16:08] <DanielRichman> gimme a chance ;)
[16:08] <DanielRichman> I only just fetched the breadboard
[16:11] <rjharrison> Hi all
[16:11] <rjharrison> back in Yorkshire
[16:11] <rjharrison> bit knackerd havent slept since 6 am yesterday
[16:12] <rjharrison> Anyhow didn't make any new records
[16:15] <Laurenceb> cool
[16:15] <Laurenceb> photos photos :P
[16:15] <rjharrison> Yep getting there just dloading them od the sd card
[16:15] <rjharrison> been in the houst 10 mins
[16:15] <rjharrison> 15GB worth
[16:16] <Laurenceb> wow
[16:18] <sbasuita> : O
[16:24] <Laurenceb> are you putting them up on flickr?
[16:25] <SpeedEvil> flickr limitts you to 100M / montth at least for free accounts
[16:26] <Laurenceb> the page says "pro"
[16:26] <SpeedEvil> dunno what the limits are on pro
[16:27] <Laurenceb> SpeedEvil:http://etd.caltech.edu/etd/available/etd-06022006-160023/unrestricted/Parkin-Thesis.pdf
[16:33] <SpeedEvil> Laurenceb: tl;dr - is that the how to use a conformal heat exchanger with 100-300GHz
[16:33] <Laurenceb> yes, in 261 pages
[16:33] <SpeedEvil> Laurenceb: and a second stage with mainly hydrgen, boosted as it flies over microwave dishes at several G?
[16:34] <SpeedEvil> Think I've read it several years ago - and yes, it does look interesting.
[16:34] <Futurity> Hi Rob
[16:35] <Futurity> you caught up on your sleep?
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[16:35] <Futurity> Hi Ed
[16:35] <Futurity> were you part of the launch last ?night
[16:36] <SpeedEvil> Laurenceb: first problem - obtain 1-300G :) 2.4 is easy - but it does meaan rather large dishes :)
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[16:40] <edmoore> Laurenceb: what was the latest hypothesis on gravity waves?
[16:41] <Laurenceb> erm it was gravity waves
[16:43] <Laurenceb> thats the hypothesis :P
[16:53] <rjharrison> NOT YET
[16:53] <rjharrison> Just got in
[16:53] <rjharrison> Looking at the pics
[16:54] <rjharrison> Not as clear as my last lot Probably due to morning pics
[16:56] <edmoore> Laurenceb: the temperature is damn odd
[16:56] <DanielRichman> Laurenceb, the t68i is just echoing my input
[16:57] <DanielRichman> and I get the occasional ERROR too in the output
[16:57] <DanielRichman> but apart from that, anything going into pin4 just comes out pin5
[16:59] <Laurenceb> thats weird
[16:59] <Laurenceb> try power cycling the phone
[16:59] <DanielRichman> have done
[16:59] <DanielRichman> when it's turned off, no echoing
[16:59] <DanielRichman> but as soon as it's powered on
[16:59] <edmoore> i can't believe it was 25 degrees celcius at 32km
[16:59] <edmoore> i mean it certainly might explain a lack of lift
[17:01] <Laurenceb> oh
[17:01] <Laurenceb> I thought it was inside the box
[17:02] <Laurenceb> it could be solar heating
[17:02] <Laurenceb> DanielRichman: try typing AT
[17:03] <DanielRichman> Laurenceb, I just get AT back
[17:03] <sbasuita> DanielRichman, perhaps some dodgy 'mode'?
[17:03] <Laurenceb> hmf
[17:03] <Laurenceb> it should say OK
[17:03] <sbasuita> DanielRichman, skim through the command reference
[17:03] <DanielRichman> sbasuita, have done
[17:04] <Laurenceb> are you sure you are getting the data back from the phone?
[17:04] <Laurenceb> - not shorted TX to Rx or something
[17:04] <SpeedEvil> some modems default to echo on IIRC
[17:04] <DanielRichman> Laurenceb, can't be; because If I turn it off then it stops
[17:05] <SpeedEvil> but yes - that too
[17:05] <Laurenceb> hmm
[17:05] <Laurenceb> thats not quite right
[17:05] <Laurenceb> perhaps you need \r\n
[17:05] <Laurenceb> and its not being sent
[17:07] <Laurenceb> http://wiki.ukhas.org.uk/_media/projects:mihab:intellballoon2.txt?id=projects%3Amihab%3Amihab_1&cache=cache
[17:07] <Laurenceb> thats some very old code of mine
[17:07] <Laurenceb> my first hab :P
[17:07] <edmoore> oh god
[17:08] <edmoore> bascom avr
[17:08] <edmoore> god save us all
[17:08] <sbasuita> DanielRichman, what program you using to send?
[17:08] <DanielRichman> sbasuita, cat.
[17:08] <sbasuita> DanielRichman, is it sending \r\n ?
[17:08] <DanielRichman> sbasuita, I doubt it
[17:08] <sbasuita> DanielRichman, use minicom
[17:09] <DanielRichman> sbasuita, eww
[17:09] <sbasuita> DanielRichman, skim the ericsson guide for quickstart settings
[17:09] <Laurenceb> Sub Sendsms() is the sms code
[17:09] <SpeedEvil> also
[17:09] <SpeedEvil> ring it
[17:09] <SpeedEvil> it may send 'ring'
[17:09] <DanielRichman> ok
[17:10] <sbasuita> DanielRichman, send it an ATD at it should dial - should be easy to spot on screen
[17:10] <SpeedEvil> yeah
[17:11] <DanielRichman> ok well
[17:11] <DanielRichman> instead of sending RING it sent ERROR
[17:11] <DanielRichman> No wait; the call didn't cause that
[17:11] <DanielRichman> that was just spontaneius
[17:11] <DanielRichman> brb; gonna check these connections
[17:11] <Laurenceb> lol
[17:12] <Laurenceb> youve tired phone gnd too right?
[17:12] <Laurenceb> *tied
[17:12] <DanielRichman> yes
[17:12] <DanielRichman> pin 10
[17:14] <Laurenceb> oh
[17:14] <Laurenceb> I remember
[17:15] <Laurenceb> there rts/cts lines
[17:15] <DanielRichman> you are kidding me!
[17:15] <DanielRichman> CTS/Mobile Station On REQuest?
[17:15] <DanielRichman> Audio from mobile/RTS
[17:15] <DanielRichman> those ones?
[17:15] <DanielRichman> pin 2 and 3?
[17:16] <Laurenceb> pin 3 to 2.85V
[17:16] <Laurenceb> shorting 2 and 3 doesnt work for some reason IIRC
[17:16] <Laurenceb> (this was all back in 2005.. trying to remember )
[17:16] <DanielRichman> so pin 3 to 2.85
[17:16] <DanielRichman> and pin 2?
[17:16] <Laurenceb> leave
[17:16] <DanielRichman> ok; thanks
[17:17] Action: DanielRichman grabs some more wire, resistors and solda ;)
[17:17] <Laurenceb> :P
[17:17] <Laurenceb> yeah took me ages to get it to work :D
[17:17] <DanielRichman> Laurenceb, the wiki has your phone number
[17:17] <Laurenceb> oh crap
[17:17] <Laurenceb> where
[17:17] <DanielRichman> I think
[17:17] <DanielRichman> dunno
[17:18] <DanielRichman> in this pdu code?
[17:18] <sbasuita> Laurenceb, it's too late - google has harvested your infos ;P
[17:18] <Laurenceb> yes
[17:18] <Laurenceb> heh
[17:18] <sbasuita> .wik rts
[17:18] <herabot> "Rape Trauma Syndrome" - http://en.wikipedia.org/wiki/Rts
[17:18] <sbasuita> ...
[17:18] <SpeedEvil> google knows way too much about me.
[17:18] <Laurenceb> I think most annoying people are too thick to work out how to use that
[17:18] <DanielRichman> true
[17:18] <DanielRichman> it is pretty mangled in the PDU
[17:18] <SpeedEvil> (60000 posts to usenet will do that)
[17:20] <Laurenceb> rape trauma syndrome... in my phone?
[17:20] <DanielRichman> sbasuita, btw: I got the atmega that arrived today working :)
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[17:20] <sbasuita> DanielRichman, cool
[17:20] <DanielRichman> it's a beast of an IC
[17:20] <DanielRichman> google atmega162
[17:22] <sbasuita> Looks like blender has crashed again.... yesterday it invoked the wrath of the OOM killer
[17:22] <DanielRichman> it ate all your ram and all your swap!?!?
[17:22] <sbasuita> Should read mm/oom_kill.c - there is a 'badness' calculation routine run for all processes
[17:22] <sbasuita> I don't have swap
[17:23] <SpeedEvil> why not?
[17:23] <sbasuita> Never use it
[17:23] <DanielRichman> SpeedEvil, I don't have swap either
[17:23] <sbasuita> 2GB does me fine
[17:23] <DanielRichman> same reasion
[17:23] <DanielRichman> although I have 4gb ;)
[17:23] <sbasuita> cba to crypto it
[17:23] <SpeedEvil> IME swap is good.
[17:23] Action: Laurenceb has 4GB +16GB swap
[17:23] <sbasuita> why?
[17:24] <SpeedEvil> It makes out of RAM failures graceful
[17:24] <sbasuita> How so?
[17:24] <DanielRichman> sbasuita, didn't you notice your computer rampantly swapping out?
[17:24] <sbasuita> ; P
[17:24] <DanielRichman> oh no wait; no swap
[17:24] <DanielRichman> brb
[17:25] <SpeedEvil> stuff doesn't jam up quite so hard as it pages in from binaries on disk that it's thrown out due to lack of RAM
[17:25] <sbasuita> It basically would have just meant I sat at my screen hearing my music player bugging a bit longer before the kernel kicked in
[17:25] <SpeedEvil> IME
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[17:26] <sbasuita> Aww... going to have to kill blender then. Was about to make a hat for my man ; (
[17:27] <jcoxon> hey all
[17:28] <rjharrison> yey jcoxon
[17:28] <sbasuita> yo jcoxon
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[17:28] <rjharrison> uloading to flickr
[17:29] <sbasuita> : )
[17:29] <rjharrison> Moring is not good for vis at least ! this morning
[17:30] Action: Laurenceb heads to flickr
[17:32] <Laurenceb> http://www.flickr.com/photos/30721501@N05/3576424384/sizes/l/
[17:32] <Laurenceb> wow
[17:32] <sbasuita> ; O
[17:33] <DanielRichman> hmm. pin3 appears to be bueried in the plastic of the connector...
[17:33] Action: DanielRichman fetches hacksaw
[17:34] <Laurenceb> http://www.flickr.com/photos/30721501@N05/3576412542/sizes/l/
[17:34] <Laurenceb> #^ pretty epic as well
[17:35] <KingJ> oh wow
[17:35] <sbasuita> Mmm... just foudn the second one - loving the sun reflection off the water
[17:35] <sbasuita> http://www.flickr.com/photos/30721501@N05/3576452100/sizes/l/in/dateposted/ <- can see a plane
[17:36] <Laurenceb> http://www.flickr.com/photos/30721501@N05/3575560167/sizes/l/
[17:38] <Laurenceb> http://www.flickr.com/photos/30721501@N05/3575624577/sizes/l/
[17:38] <Laurenceb> ^ think thats the highest
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[17:48] <rjharrison> A bit misty but you get the idea http://www.flickr.com/photos/30721501@N05/sets/72157618814637849/
[17:50] <Laurenceb> http://www.flickr.com/photos/30721501@N05/sets/72157618814637849/
[17:50] <rjharrison> Video will follow tonight
[17:51] <Laurenceb> any earlier shots?
[17:51] <rjharrison> they are black
[17:51] <Laurenceb> 1539?
[17:51] <rjharrison> icy
[17:51] <Laurenceb> 1540 is the first shot that was ok?
[17:53] <rjharrison> Yep
[17:53] <rjharrison> They didn't start at 1
[17:54] <Laurenceb> thats a shame, but very cool shots
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[17:55] <Laurenceb> any luck with the phone?
[17:56] <DanielRichman> working on it; just un-buried pin3
[17:56] <jcoxon> cuddykid, hey, just got your email
[17:56] <jcoxon> thats an excellent radio
[17:56] <cuddykid> hi
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[17:56] <jcoxon> lots of us have that version
[17:56] <jcoxon> model*
[17:56] <cuddykid> ok, great
[17:56] <cuddykid> how would i connect it to computer?
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[17:57] <jcoxon> there is an speaker port and you can connect it to your sound card's audio in
[17:57] <jcoxon> with a 3.5mm jack to 3.5mm jack cable
[17:58] <jcoxon> DanielRichman and co are borrowing mine right now
[17:58] <cuddykid> great, so it would work with Macbook Pro
[17:58] <jcoxon> yes
[17:58] <cuddykid> i will be bidding for it then!
[17:58] <jcoxon> its not cheap but its an incredibly sensitive radio
[17:58] <DanielRichman> do they still make it?
[17:58] <jcoxon> until you get a radio licence you can't use it ot transmit
[17:59] <jcoxon> DanielRichman, no, tis on ebay
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[17:59] <cuddykid> you don't need radio license to receive though?
[17:59] <jcoxon> no
[17:59] <cuddykid> great
[17:59] <jcoxon> i've only just got mine
[18:00] <jcoxon> its worthwhile, not difficult and teaches you a lot about radios
[18:00] <akawaka> icarus recovered okay?
[18:00] <jcoxon> akawaka, yes
[18:00] <akawaka> yeah, the license is a good learning experience
[18:00] <jcoxon> pics are going up as we speak
[18:00] <akawaka> congrats to everyone
[18:02] <cuddykid> Would i feed the outputed data from the serial straight into the radio modem and decode it on the ground or would i decode it using the arduino?
[18:03] <SpeedEvil> from the GPS?
[18:03] <cuddykid> yes, garmin etrex
[18:03] <SpeedEvil> generally, you process it down to a string
[18:03] <cuddykid> ok
[18:03] <Laurenceb> cya folks
[18:03] <DanielRichman> We take the NMEA, extract the values we need, then add some other stuff, then send it
[18:03] <SpeedEvil> so that it's - say - 80 bytes sent at 50bps
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[18:03] <SpeedEvil> and updates every 30s or so.
[18:03] <akawaka> NEMA is kind of verbose
[18:03] <SpeedEvil> yeah
[18:04] <SpeedEvil> Though you could just use GPRMC sentances - which aren't too bd
[18:04] <DanielRichman> You can have a look at our code (it's aruduino code atm; though we're changing mcu so it won't be for long) at http://code.google.com/p/alien-flightcomputer/source
[18:04] <SpeedEvil> some recievers canbe configured to only output one sort.
[18:04] <SpeedEvil> also - etrex = heavy
[18:04] <SpeedEvil> and may not work at extreme altitude
[18:05] <cuddykid> good point!, thanks guys for all the help! Would it be better getting a GPS module?
[18:06] <SpeedEvil> probably
[18:06] <jcoxon> cuddykid, which arduino did you get?
[18:06] <SpeedEvil> theere is nothing stopping you plugging together non-optimal heavier stuff, and using a bigger balloon
[18:06] <SpeedEvil> or not putting a camera on
[18:06] <cuddykid> the standard demilovina (or what ever it is called!)
[18:07] <DanielRichman> duemilanove
[18:07] <jcoxon> so thats 5v
[18:07] <cuddykid> thats it
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[18:08] <jcoxon> cuddykid, well have a good mess around with it to get a feel of how the code handles
[18:08] <cuddykid> yeh no doubt i will be playing with it most of the weekend!
[18:09] <jcoxon> then you should look into either the radio or the gps
[18:09] <jcoxon> probably best looking into a gps module
[18:09] <cuddykid> ok
[18:10] <jcoxon> now you need to bear in mind that your arduino is 5v
[18:10] <rjharrison> akawaka: Thanks some pics http://code.google.com/p/alien-flightcomputer/source
[18:10] <rjharrison> opps
[18:10] <jcoxon> and quite a few gps modules are 3.3v
[18:10] <jcoxon> so you'll need to think about how to match that up
[18:10] <rjharrison> http://www.flickr.com/photos/30721501@N05/sets/72157618814637849/
[18:10] <cuddykid> ok, good point!
[18:10] <rjharrison> lassen SKII is 5v
[18:12] <Futurity> Cool
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[18:14] <DanielRichman> ARgh. The phone is *still* just echoing anything that's given to it
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[18:47] <sbasuita> DanielRichman, you still using cat?
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[18:55] <Laurenceb> hello
[18:56] <Laurenceb> any luck with the phone?
[18:57] <sbasuita> Laurenceb, same old unfortunately
[18:57] <sbasuita> DanielRichman, alex will probs make it to yours around midday. How early can I come?
[19:01] Action: Laurenceb gets back to watching the bme pain olympics
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[19:25] <DanielRichman> Laurenceb, got it working :)
[19:25] <Laurenceb> what was the problem?
[19:25] <DanielRichman> There wasn't one.
[19:25] <DanielRichman> I think that it echoing the input was a designed feature
[19:26] <DanielRichman> Though if there was a problem it was that my commands needed waits
[19:26] <DanielRichman> need to wait for the > before starting to send octets
[19:26] <Laurenceb> doh
[19:27] <Laurenceb> how come it sent an error when you sent AT then?
[19:27] <DanielRichman> I think the ERROR was it timing out
[19:27] <DanielRichman> from not getting valid input for the commands where I didn't wait
[19:29] <Laurenceb> so is it sending messages?
[19:29] <DanielRichman> yeah! :D
[19:30] <Laurenceb> brilliant
[19:30] <DanielRichman> sbasuita, will you be going on the train or will you be dropped off?
[19:40] <sbasuita> DanielRichman, dunno
[19:40] <sbasuita> DanielRichman, could you pick me up from blackwater?
[19:40] <sbasuita> Cycling is also feasible as a last resort
[19:40] <DanielRichman> sbasuita, ofc we can pick you up from blackwater
[19:53] <sbasuita> DanielRichman, my dad can give a me a lift straight to your house in the morning. In the afternoon might have to catch a train, ie. lift from your parents to the station.
[19:53] <sbasuita> DanielRichman, what time you want to meet up in the morning?
[19:53] <DanielRichman> sbasuita, up to you
[19:53] <sbasuita> DanielRichman, 10 am?
[19:53] <DanielRichman> sounds good
[19:53] <sbasuita> fair
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[20:22] <natrium42> rjharrison, excellent pics!
[20:22] <SpeedEvil> Yep.
[20:23] <SpeedEvil> The early frame with the sun on the water is nice.
[20:23] <natrium42> yah
[20:23] <SpeedEvil> s/water/sea/
[20:25] <SpeedEvil> processing the jpegs to add in GPS to the exif would be cool.
[20:26] <natrium42> yep, there's even a tool to do that
[20:26] <SpeedEvil> I mean so they show up on the flickr map automagically
[20:27] Action: natrium42 did it for one of his sets --> http://www.flickr.com/photos/natrium42/sets/72157602750851851/
[20:29] <natrium42> rjharrison should make a nice panorama of the sunrise
[20:29] <natrium42> it looked like there are enough pictures
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[21:01] <sbasuita> Noooo!
[21:01] <sbasuita> [33702.722322] Out of memory: kill process 3979 (blender) score 143831 or a child
[21:01] <sbasuita> [33702.722353] Killed process 3990 (blender-bin)
[21:01] <sbasuita> There goes my beautiful chaotically generated mountain ranges
[21:01] <sbasuita> ; (
[21:01] Action: sbasuita adds swap
[21:03] <DanielRichman> ahah
[21:04] <sbasuita> It was all like: ooh, lots of vertices and fractals, hit F12, *render*, notice exponential curve in RAM usage monitor, freeze.
[21:04] <sbasuita> XD
[21:06] <Hiena> Hindsight: Save
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[21:19] <G8KHW> rjharrison: I weighed the remains of the balloon - 1.2Kg - so 1.8Kg lost
[21:21] <SpeedEvil> can you return the 1.2kg for a refund?
[21:21] <SpeedEvil> :)
[21:21] <SpeedEvil> rjharrison: awesome pics
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[22:11] <fuzzylugnuts> Looks like the spirit of knoxxville group almost made it trans-continental
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[23:06] <akawaka> fuzzylugnuts: yeah?
[23:09] <fuzzylugnuts> akawaka: Yeah, like 90% of the way, its on their website
[23:12] <fuzzylugnuts> I'm very impressed. I hope they make it
[23:13] <fuzzylugnuts> http://www.spiritofknoxville.com/
[23:13] <fuzzylugnuts> says they landed 300 miles short of Ireland
[23:30] <akawaka> oh, last years one
[23:30] <akawaka> i thought it was a new flight
[23:32] <fuzzylugnuts> Oh, yikes
[23:32] <fuzzylugnuts> I didn't even notice the date
[23:33] <fuzzylugnuts> well shoot. that was really anti-climactic
[23:38] <fuzzylugnuts> Oh, I see, it took a year for them to release the data
[23:40] <fuzzylugnuts> I miss my old group and its nasa funding : (
[00:00] --- Sat May 30 2009