highaltitude.log.20110729

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[01:27] Nick change: shea__ -> shea|up
[01:27] Nick change: shea|up -> shea`
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[01:53] <kristianpaul> gp2021 datasheet is really instructive :-)
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[07:59] <NigelMoby> Morning
[08:10] <fsphil> morning!
[08:19] <SamSilver> Morning
[08:23] <SamSilver> would luv to hitch a ride on this bugger! http://www.gizmag.com/lockheed-martin-hale-d-airship/19360/?utm_source=Gizmag+Subscribers&utm_campaign=d7e1e4a948-UA-2235360-4&utm_medium=email
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[08:28] <fsphil> hehe, it landed in a tree
[08:28] <fsphil> (well, trees)
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[08:35] <SamSilver> "predetermined"
[08:35] <SamSilver> lol
[08:38] <SamSilver> technical difficulties at 32,000 ft., which prevented it from reaching its target so the flight was terminated. It then descended at 8.26 a.m., landing in southwestern Pennsylvania at a predetermined location
[08:41] <eroomde> yo, highaltitude, as my specific hab search engine, i'm looking for some wavs of received balloon telemetry
[08:41] <eroomde> can ye link me up?
[08:41] <jcoxon> morning all
[08:42] <jcoxon> http://wiki.ukhas.org.uk/guides:tracking_guide#background
[08:42] <eroomde> ta jcoxon
[08:42] <eroomde> http://i.imgur.com/wMvzU.png
[08:42] <fsphil> does it have ot be strong eroomde? I've some recordings but they're a bit patchy in terms of signal strength
[08:42] <eroomde> so the top graph is a bit of recorded audio
[08:42] <jcoxon> eroomde, is that a decoder?
[08:43] <eroomde> containing a single fsk jump from 500hz to 800hz
[08:43] <eroomde> in a very noisy signal
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[08:43] <eroomde> the green is the clean signal, the blue is the received very noisy signal
[08:44] <eroomde> the bottom graph is the thing i'm worki9ng on which asks in a bayesian way, 'somewhere in here there is a jump from 500 to 800hz, where is it most likely?'
[08:44] <eroomde> the actual change is at position 150
[08:45] <eroomde> so you can see the results are initially promising for this method of fsk decoding
[08:45] <jcoxon> i see
[08:45] <eroomde> it would work just as well for psk too
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[08:45] <eroomde> so i think it means that we can crank up the baud rate, if i can make it work online properly
[08:46] <jcoxon> is it real time?
[08:46] <eroomde> with fshil's forward error correction stuff we might be able to get reliable hab comms with a yagi and yaesu at up to 1.2kbps
[08:46] <eroomde> jcoxon: in python it does the calculatuion faster than real time currently
[08:47] <eroomde> but it is not yet a proper program that connects to your sourcard
[08:47] <eroomde> this is stage 2
[08:47] <jcoxon> i see
[08:47] <jcoxon> so you've switched to python from matlab
[08:47] <jcoxon> cool
[08:47] <eroomde> yes
[08:47] <eroomde> python is the way forward
[08:47] Action: jcoxon should be asleep - on nights this weekend
[08:47] <eroomde> and makes it much easier to make it OS
[08:48] <jcoxon> oh its GPSL right now
[08:48] <fsphil> python worth learning? I can't seem to get my head around it
[08:48] <eroomde> fsphil: definitely
[08:48] <eroomde> for prototyping and dicking around, it's been great
[08:48] <jcoxon> at 0900 (GMT-5) they are doing a talk
[08:48] <eroomde> i've been using 'spyder' to develop the algorithms
[08:48] <eroomde> it's scipy and a gui to make a matlab replacement
[08:49] <eroomde> with a graphical variable inspector which is really useful for sanity checking all the matrices, as this bayesian thing is really just lots of matrix algebra
[08:49] <fsphil> sounds like fun :)
[08:50] <eroomde> saves putting asserts comparing shapes everywhere
[08:50] <fsphil> I've dabbled with 1200 baud in fldigi, but it has issues
[08:50] <eroomde> yes
[08:50] <eroomde> see what i like about this technique is that it actually looks for the jumps
[08:50] <eroomde> so you don't need a time-slicing discriminator
[08:51] <eroomde> which is where matched filters fall over
[08:51] <eroomde> you can extract a bit stream more directly
[08:51] <fsphil> does it take into account the baud rate? so the odds of a jump mid-symbol is unlikely, if one happens ignore it?
[08:51] <eroomde> not yet but i have figured out the maths to add expectation to when a changepoint is likely to occur
[08:52] <eroomde> that's definitely a prior that needs to be in there
[08:52] <eroomde> there was a good paper on financial data doing a similar thing that had a prior on financial crashes likely to happen every 30 years
[08:53] <eroomde> economists do the most horrible things.
[08:54] <fsphil> odd, the tracker is suddenly very busy
[08:55] <eroomde> wow
[08:55] <jcoxon> oh natrium added aprs
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[08:56] <jcoxon> shall we clear it
[08:56] <fsphil> cool
[08:56] <fsphil> yea, I think rjh is launching tomorrow
[08:57] <fsphil> launching a cat and a canary, lovely :)
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[09:00] <jcoxon> eroomde, hows tricks?
[09:00] <eroomde> not bad thanks jcoxon
[09:00] <eroomde> oxfordshire is lovely
[09:01] <eroomde> i've found a really nice house (and housemate) in oxford
[09:01] <jcoxon> cool
[09:01] <eroomde> i move in shortly, currently being put up by a colleague
[09:01] <jcoxon> okay
[09:01] <jcoxon> i'm mid moving down to canterbury
[09:01] <jcoxon> finishing off here in worthing on tues
[09:02] <jcoxon> need to start on weds
[09:02] <eroomde> tight!
[09:02] <jcoxon> happens to everyone - can't have a day without doctors
[09:04] <eroomde> you're on nights atm?
[09:04] <jcoxon> i'm on tonight
[09:04] <jcoxon> so am in the transistion
[09:04] <jcoxon> worked days yesterday
[09:04] <eroomde> that must be tough
[09:05] <jcoxon> well its always a gamble - to you just sleep normally then have do 24hrs awake
[09:05] <jcoxon> or do you stay up late and then try and sleep in the day
[09:05] <jcoxon> i struggle to sleep in the day
[09:05] <jcoxon> it'll be easier tomorrow when i'm super tired
[09:06] <eroomde> are you moving stuff to cant atm?
[09:06] <jcoxon> nah i'll move it on mon/tues
[09:07] <eroomde> ok
[09:09] <Darkside> jcoxon: ping
[09:09] <Darkside> the d-fldigi OSX build doesnt run
[09:09] <Darkside> what libraries do i needto install?
[09:10] <jcoxon> hehe slow down
[09:10] <jcoxon> what OS? what dl-fldigi build?
[09:10] <Darkside> OSX
[09:10] <Darkside> latest, on your github page
[09:10] <jcoxon> version?
[09:10] <jcoxon> r115.2?
[09:12] <jcoxon> cause the bundle includes all the libs
[09:14] <jcoxon> make sure you copy both files in the dmg to /Applications
[09:14] <jcoxon> bbiab
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[09:30] <Darkside> http://i.imgur.com/s7YZC.jpg
[09:30] <Darkside> theres my payload, as it stands :P
[09:30] <Darkside> need to weigh it
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[09:40] <fsphil> cute
[09:41] <SamSilver> Darkside: have you got somthing against duct-tape
[09:41] <SamSilver> :-P
[09:42] <SamSilver> bbl
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[09:58] <WillDuckworth> nice Darkside
[10:02] <cuddykid> morning all
[10:03] <WillDuckworth> hey cuddykid - are you looking at a launch next week?
[10:04] <cuddykid> Hi WillDuckworth, I was, but there's no way I can get the payload complete in time! Still got quite a bit to do, think it will be about 2 weeks ish!
[10:04] <cuddykid> On for launch tomorrow or not?
[10:04] <WillDuckworth> oooh - a challenge. no launch tomoz or sunday - :(
[10:05] <WillDuckworth> i'm v v v close to it though! i'll get some pics and write up soon
[10:05] <cuddykid> ahh, cool!!
[10:05] <cuddykid> got the SD card log up & running - need to solder it all now
[10:06] <cuddykid> took apart the little keychain cam and that needs some tiny soldering
[10:06] <cuddykid> then got solar panels, other radio modules to fit, and possibly fireworks lol
[10:07] <WillDuckworth> yeah - i've done some of that, (got 3 on my payload - lent from mates) be careful! the contacts are smaaall
[10:07] <jcoxon> fireworks!
[10:07] <jcoxon> that doesn't sound terribly safe!
[10:16] <s-taylo> Has anyone found an easy way of triggering those keychain cams, eg just an enable (record when high) input?
[10:20] <eroomde> s-taylo: i don't know exactly which cams you mean but usually it's just a question of taking on apart and soldering on some wires to fake the button presses
[10:24] <cuddykid> WillDuckworth, s-taylo: yeah, I've just taken it apart and found the contacts on the push button - but indeed they are TINY! - just apply power for ~3s and it turns on
[10:25] <cuddykid> jcoxon - lol, I know, it really doesn't!
[10:27] <daveake> How long do those last on their batteries? Do you need to connect to a larger external battery for a typical flight?
[10:28] <cuddykid> about 2 hrs
[10:28] <cuddykid> so will be fine as I plan on turning them on/off a fair bit
[10:28] <daveake> Ooh not bad.
[10:28] <cuddykid> that's if the lipo battery holds out
[10:29] <daveake> Yep. I see another ebay purchase approaching.
[10:30] <cuddykid> lol, I'm tempted to get more
[10:30] <cuddykid> not sure how my soldering is going to fare though with the tiny connectors
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[10:31] <cuddykid> daveake: photos here - http://flic.kr/s/aHsjvtsTpK
[10:38] <jcoxon> cuddykid, what happens if they fail to fire and it lands somewhere
[10:38] <jcoxon> also do they require oxygen to ignite?
[10:42] <daveake> thanks cuddykid :)
[10:43] <daveake> I'll get one soon to have a play with
[10:44] <daveake> What's the weight?
[10:44] <cuddykid> jcoxon, still thinking about that possibility! - was thinking cut down so at least they wouldn't be associated with payload. With regards to o2 - I believe theres enough o2 in the igniter & gunpowder to have a successful fire
[10:45] <cuddykid> daveake: I'll get link :)
[10:45] <cuddykid> really small though
[10:46] <jcoxon> cuddykid, hmmm
[10:47] <cuddykid> daveake: http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=170660214568&ssPageName=STRK:MEWNX:IT
[10:47] <daveake> TVM :)
[10:48] <jcoxon> cuddykid, not convinced its a good idea
[10:48] <SamSilver> cuddykid: are the connections to the switch circled in this picture http://www.flickr.com/photos/acudworth/5984435349/in/set-72157627177202669/
[10:48] <daveake> Got that :-)
[10:48] <cuddykid> jcoxon, I'm not convinced too, will have a think
[10:49] <cuddykid> SamSilver - there are 4 connections to the switch, but power needs to be supplied across the 2 circled to turn it on
[10:50] <jcoxon> cuddykid, please do - i'm not trying to dampen your enthusiasm but HAB is already a grey area - my opinion is that we should avoid potentially dangerous things
[10:50] <SamSilver> okay
[10:50] <jcoxon> it wouldn't be difficult for htem to shut us down
[10:51] <cuddykid> jcoxon, fully understand
[10:52] <SamSilver> cuddykid: how are you going to tie the mice onto the rockets?
[10:52] <SamSilver> duct tape
[10:52] <cuddykid> mice?!
[10:52] <SamSilver> ;-)
[10:52] <cuddykid> lol
[10:53] <SamSilver> sorry james
[10:53] <SamSilver> lol
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[10:54] <cuddykid> right, that's better, taken the metal casing off the switch which was making it even more challenging to solder
[10:56] <cuddykid> hmm, anyone got any tips on micro soldering?!
[10:59] <SamSilver> file your irons tip to a point and have it real clean and "tin" the wire first
[10:59] <WillDuckworth> hot hot iron. tin the wires before. and a really small solder tip ;)
[10:59] <SamSilver> snap WillDuckworth
[10:59] <cuddykid> thanks :)
[11:02] <eroomde> hmm friday
[11:03] <eroomde> = pub lunch
[11:03] <eroomde> also Randomskk scipy f*ing rocks
[11:03] <eroomde> (minor change of heart having forgiven it for the matrix algebra debacle)
[11:04] <rjharrison_> Hi all, for all you uk trackers there will be 2 payloads up on saturday
[11:05] <eroomde> from ou et ou?
[11:05] <eroomde> actually i am out on sat so nvm
[11:05] <SamSilver> times? rob
[11:06] <rjharrison_> 11:00 on 434.075 and 434.650 Callsign $$cat $$canary resp. Launch from EARS
[11:06] <SamSilver> bst
[11:06] <rjharrison_> All times BST
[11:07] <SamSilver> afk
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[11:10] <Randomskk> eroomde: haha
[11:10] <Randomskk> yea, scipy is really nice
[11:10] <Randomskk> I used it for that image processing thing
[11:12] <jcoxon> bbl
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[11:41] <cuddykid> hmm, a severe botch job of soldering& now to see if it works
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[11:46] <cuddykid> one joint works, other doesn't
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[12:17] <cuddykid> think I've broken it :(
[12:20] <daveake> :(
[12:20] <cuddykid> so annoying, can't get the light to come on now :(
[12:20] <daveake> Flat battery (he asked, hopefully) ?
[12:21] <cuddykid> nope lol
[12:21] <daveake> Hey it was worth a shot!
[12:21] <daveake> Have you shorted anything with the soldering?
[12:22] <cuddykid> I think what happened.. I connected 2 things by accident, then trying to remove the solder I might have damaged something else (removed some other connection!)
[12:22] <daveake> Electronics has gotten a lot smaller and more fiddly since I were a lad ..
[12:22] <daveake> I'll order one myself soon; see if mine lasts any longer than yours did ;)
[12:22] <cuddykid> yeah!
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[12:32] <cuddykid> WillDuckworth - I think I've bust the keychain cam!
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[12:36] <WillDuckworth> unlucky.... check for excess solder shorting maybe?
[12:36] <WillDuckworth> or have melted the PCB?!?
[12:37] <cuddykid> I think i've either fried the chip, or created a connection as i've exposed some of the copper of pcb :S lol
[12:37] <cuddykid> trying another way round now
[12:38] <daveake> Destroy it some more ;)
[12:38] <cuddykid> indeed
[12:38] <cuddykid> lol
[12:38] <Zuph> Morning #highaltitude
[12:38] <eroomde> afternoon zuph
[12:38] <cuddykid> just connecting everything up now :P
[12:38] <cuddykid> hi Zuph
[12:39] <eroomde> i think highaltitude time is probably 60/65ths between GMT and ECT
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[12:41] <Zuph> With the Aussies, it's a 24 hour channel :-p
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[12:55] <cuddykid> I hate soldering.
[12:55] <Darkside> haha
[12:56] <Darkside> i've just been making a dodgy 1/4 wave ground plane
[12:56] <Darkside> hmm nigey isnt here
[12:56] <cuddykid> can't be as dodgy as mine!! - but have to say, despite all my concerns, it worked great!
[12:56] <Darkside> oh just wait until yoiu see ut
[12:56] <Darkside> i'm uploading a pic now..
[12:56] <cuddykid> mine was just like a lump of solder!
[12:56] <cuddykid> ok
[12:57] <Darkside> mine is wire
[12:57] <Darkside> http://i.imgur.com/H1r9m.jpg
[12:57] <cuddykid> yeah, the radials wire but where the 4 ground ones connected up was just a massive lump of solder
[12:58] <cuddykid> nice!
[12:58] <Darkside> im gonnago weigh it now
[12:58] <Darkside> back in a bit
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[13:06] <cuddykid> confirmed - completely destroyed keychain cam
[13:07] <daveake> :(
[13:07] <cuddykid> not sure whether to get another or not, fear the same will happen!
[13:07] <daveake> Get a finer tip soldering iron / better glasses / steadier hand? ;)
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[13:09] <Darkside> NigelMoby: http://i.imgur.com/H1r9m.jpg
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[13:09] <daveake> I'll order one so I can try. If I can solder it OK then I'm happy to do one for you :)
[13:09] <cuddykid> daveake: yeah lol
[13:09] <NigelMoby> Oooo that's pretty sweet dude!
[13:10] <cuddykid> :)
[13:10] <daveake> Darkside - what happens when it lands on the antenna and it shoves your PCB up into the case? :)
[13:14] <Darkside> then it won't get out as well
[13:14] <NigelMoby> Lol
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[13:16] <daveake> cuddykid - right, I've ordered one with 2gb card for £12. Will let you know how I get on :)
[13:16] <cuddykid> can the arduino uno measure current & voltage from a power supply - I want to log current & voltage from solar panel
[13:16] <cuddykid> daveake: great :)
[13:17] <daveake> Voltage - easy. Just reduce the voltage down to less than 5V with a couple of resistors, then use an A/D input
[13:18] <cuddykid> yep, saw the aref pin on arduino, but for current, haven't got a clue
[13:18] <daveake> For current you need a series resistor, dropping say 0.5V at full current (assuming that's not too much for your application).
[13:20] <daveake> Will the panel be providing power for the Arduino?
[13:20] <cuddykid> ahh, right
[13:20] <daveake> Is that the bit you need to measure?
[13:20] <cuddykid> wasn't planning to, just wanted to see what values I got out, then in future flights it might be a source of poer
[13:21] <daveake> OK, so the first flight is just a test to measure the volta/samps
[13:21] <cuddykid> yeah
[13:22] <daveake> Use a fixed R to replicate your expected load, then measure the voltage.
[13:22] <daveake> I = V/R so you don't need to measure both :)
[13:22] <cuddykid> thanks
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[13:23] <Darkside> NigelMoby: any more news about launch site?
[13:24] <NigelMoby> Not until bout 6pm
[13:24] <Darkside> ok
[13:25] <NigelMoby> Brb my mobile appears to not want to make calls :@
[13:26] <Darkside> shit, jcoxon is gone
[13:26] <Darkside> i cannot run dl-fldigi on my laptop
[13:26] <Darkside> its trying to use libraries which are the wrong architectire
[13:27] <Darkside> its trying to call libogg
[13:27] <Darkside> but the one i have is compiled for x64
[13:29] <Darkside> goddamnit, i'm gonna need to recompile EVERYTHING for x86
[13:29] <Darkside> i thought dl-fldigi has the required libs...
[13:30] <Darkside> yeah, this is NOT working...
[13:30] <Darkside> so i can't run dl-fldigi...
[13:30] <Darkside> ARGH
[13:32] <Darkside> ok, got the old version going
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[13:47] <Laurenceb> http://www.theregister.co.uk/2011/07/29/lohan_concepts/
[13:47] <Laurenceb> intriguing
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[13:50] <Laurenceb> "The basic idea is a tractor rocket configuration, for its inherent stability"
[13:50] Action: Laurenceb facepalm
[13:50] <Darkside> hey Laurenceb
[13:50] <Darkside> catherine mentioned you
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[14:05] <NigeyS> grr i hate orange!!
[14:06] <mattltm> lol.
[14:06] <NigeyS> they sent a sim update
[14:07] <NigeyS> phone crashes during update
[14:07] <NigeyS> phone = brick
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[14:11] <Darkside> hey NigeyS
[14:11] <Darkside> heh
[14:11] <Darkside> still need to weigh this payload
[14:11] <Darkside> will go try and get into the labs again in a few minutes
[14:11] <Darkside> just doing abit of coding for TOPCAT atm
[14:15] <mattltm> NigeyS: Same thing happened with my android and O2
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[14:18] <NigeyS> bk .. bloody kids next door :@
[14:26] <fsphil> evening all
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[14:30] <Darkside> jcoxon: i figured the problem
[14:30] <jcoxon> uhuh
[14:30] <Darkside> i think it an architecture issue on the beta release you uploaded
[14:30] <Darkside> the .2 one,
[14:30] <jcoxon> oh really?
[14:30] <Darkside> i'm running 64-bit
[14:30] <Darkside> anyway, i have the .1 release
[14:31] <jcoxon> it should be universal
[14:31] <Darkside> the .1 works
[14:31] <jcoxon> okay well tehre is very little change
[14:32] <fsphil> now, compile a PPC version and I'll be happy :)
[14:33] <jcoxon> i can do that as well at some point :-)
[14:34] <fsphil> hehe, no need :) that poor old mac gets very little use these days
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[14:39] <Darkside> NigeyS: 68 grams
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[14:39] <SamSilver_> shuu nice and light
[14:39] <Darkside> that doesnt include a small bag
[14:39] <NigeyS> 68 .. :o
[14:39] <Darkside> but its still pretty fuckin light
[14:39] <NigeyS> picochu is fat!
[14:39] <Darkside> how heavy?
[14:40] <NigeyS> 88
[14:40] <Darkside> hehe
[14:40] <Darkside> wanna fly mininut instead?
[14:40] <SamSilver_> use vertical stripes and dark colours and you will hardly notice
[14:40] <jcoxon> picochu has to fly!
[14:41] <NigeyS> Darkside, picochu is flying 1 way or another! DESTINY!! lol
[14:41] <Darkside> NigeyS: i'm making a notice to fly with it
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[14:42] <Darkside> "HARMLES SCIENCE EXPERIMENT" etc
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[14:42] <NigeyS> ahh cool, im gonna put "highly explosuve please call xxxx" lol
[14:42] <Darkside> >_>
[14:42] <Darkside> nah dont do that
[14:42] <Darkside> it'll uset the authorities if they find it
[14:42] <NigeyS> lol nah jk :)
[14:43] <NigeyS> "Harmless scientific payload, if found please call xx" should do it
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[14:51] <NigeyS> hmm predictor isnt playing ball today
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[14:57] Nick change: M0JSN_ -> M0JSN
[15:03] <Zuph> Makerfaire demo should be fun. Hopefully Dan is less manic by the time I get there :-p
[15:03] <NigeyS> lol hey Zuph , it starts tomorrow morning right ?
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[15:10] <Zuph> NigeyS: Yeah
[15:11] <Zuph> They're setting up now, though
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[15:12] <Zuph> The guy bringing up Speedball-1 and the balloon envelope got delayed by about 6 hours, though.
[15:13] <Darkside> http://www.imgur.com/awgum.jpg
[15:13] <Darkside> my bag
[15:13] <Darkside> not sure how im gonna tie onto it yet
[15:14] <Darkside> prolly cabletie
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[15:18] <NigeyS> Darkside, neat!
[15:18] <NigeyS> Zuph, 6 hours? :O dam
[15:20] <Zuph> heh, yeah. He was supposed to leave at 0430
[15:21] <NigeyS> eek thats silly early..
[15:23] <Zuph> heh
[15:23] <Zuph> He was going to try to get there in time for 10am setup.
[15:23] <Zuph> As a result, Dan is in significant need of a chill pill.
[15:25] <NigeyS> lol he can get rather flustered
[15:27] <eroomde> yes i can just imagine that
[15:28] <NigeyS> hehe hey Ed, how's your afternoon ?
[15:29] <Laurenceb> http://www.youtube.com/watch?v=4uBLPwSWF_A&NR=1&feature=fvwp
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[15:43] <SamSilver> time to switch
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[16:03] <eroomde> NigeyS: good thanks
[16:03] <eroomde> off home soon
[16:03] <eroomde> you up to much this weekend?
[16:06] <NigeyS> launching picochu :D
[16:07] <NigeyS> when the predictor starts working again.. its hanging on 10% :/
[16:07] <eroomde> ah grand
[16:07] <eroomde> at the launch
[16:07] <eroomde> not the predictort
[16:07] <NigeyS> hehe :D might have to change launch site, a bit close to a nearby heliport at the mo
[16:08] <eroomde> we're right next to RAF Benson here
[16:08] <NigeyS> :o
[16:08] <eroomde> lots of helicopters constantly
[16:08] <NigeyS> i can imagine
[16:08] <NigeyS> i worry alot though hehe
[16:08] <NigeyS> wouldnt want my first launch to cause an accident or anything :|
[16:09] <eroomde> or 2nd or 3rd...
[16:09] <NigeyS> exactly, id like to be as safe as possible
[16:10] <NigeyS> if that means moving to a different site, it's worth it
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[16:25] <eroomde> plan
[16:25] <eroomde> well good luxk NigeyS
[16:25] <eroomde> I shall unfort be busy tomorrow
[16:25] <eroomde> seeing a man about a dog
[16:25] <eroomde> (well, rocket testing) and getting out of oxford on sunday
[16:26] <NigeyS> ahh okies, thanks anyway Ed, hopefully it'll all go well :D
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[16:31] <griffonbot> @steamfire: Made it to #MakerFaireDetroit ! @LVL1WhiteStar balloon guide cables hung in @thehenryford, helium on the way! #UKHAS http://t.co/QCuFKYR [http://twitter.com/steamfire/status/96981205844623361]
[16:33] <griffonbot> @LVL1WhiteStar: RT @steamfire: Made it to #MakerFaireDetroit ! @LVL1WhiteStar balloon guide cables hung in @thehenryford, helium on the way! #UKHAS ht ... [http://twitter.com/LVL1WhiteStar/status/96981596791517184]
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[16:43] <cuddykid> got some more plain board to solder SD card stuff to :)
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[16:44] <cuddykid> at least SD card works - unlike the damn keychain cam!!
[16:44] <NigeyS> keyfobcam giving you trouble ?
[16:45] <cuddykid> NigeyS: yeah, screwed up the soldering this morning now completely broke lol
[16:47] <NigeyS> eeek
[16:47] <cuddykid> fortunately only £4 ish - still annoying though as they take almost 2 weeks to come from china
[16:51] <NigeyS> ack thats a pain
[16:51] <NigeyS> no chance of fixing the damage ?
[16:53] <NigeyS> RocketBoy, about ?
[16:53] <RocketBoy> yep
[16:53] <NigeyS> hey steve just a quick Q
[16:53] <cuddykid> NigeyS: nope :(
[16:53] <NigeyS> have you used the n10 / x10w cylinder before ?
[16:53] <NigeyS> from air products
[16:54] <cuddykid> also, RocketBoy, did you get my email about 2 H1000s?
[16:54] <RocketBoy> nope I use N20s - but they are similar
[16:54] <RocketBoy> cuddykid: yep
[16:54] <NigeyS> ahh oki, they state that its 2.61m^3 but it looks a bit small to contain that much :|
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[16:54] <RocketBoy> I haven't had time to price it up yet
[16:55] <NigeyS> the boc v cylinder is bigger and holds less than that
[16:55] <RocketBoy> that sounds fine for the N10 - the N20 is 5.2 - so that makes sense
[16:55] <RocketBoy> being smaller they can probably afford greater pressure
[16:55] <cuddykid> no probe RocketBoy, when you can just drop an email back :)
[16:56] <NigeyS> bonus then, means i have enough for pico launch, and the ats-1 flight
[16:56] <cuddykid> *probs
[17:03] <Darkside> NigeyS any news
[17:03] <NigeyS> gimme 10mins and ill know :D just waiting on a call
[17:03] <Darkside> ok
[17:16] <griffonbot> @AnthonyStirk: Launch tommorrow from EARS see mail #ukhas [http://twitter.com/AnthonyStirk/status/96992447137185792]
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[17:57] <NigeyS> hey jcoxon
[17:57] Nick change: stilldavid -> tilldavid
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[17:58] <jcoxon> hey NigeyS
[17:59] <NigeyS> looks like tomorrows pico launch is off :(
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[18:00] <jcoxon> oh why?
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[18:02] <NigeyS> no transport
[18:02] <NigeyS> got let down at last minute
[18:02] <NigeyS> slightly cross tbh
[18:03] <jcoxon> oh dear
[18:03] <jcoxon> well you'll be able to do it again soon
[18:03] <NigeyS> my dad was my backup transport but they have gone away for the weekend , last minute thing so .. meh
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[18:11] <fsphil> hate that
[18:11] <fsphil> it's what delayed my last launch
[18:11] <NigeyS> bloody annoying aint it :(
[18:11] <NigeyS> but telling me the night before at 6:30 .. thats kinda lame
[18:12] <fsphil> oh they're launching tomorrow at the same time
[18:13] <NigeyS> who ?
[18:15] <number10> whats happened NigeyS
[18:15] <NigeyS> no transport
[18:16] <NigeyS> so will delay for a week unless i can get some for sunday, but it's unlikely
[18:17] <number10> oh.. not good - where you going to go to bath?
[18:17] <fsphil> NigeyS, rjh is launching two tomorrow morning
[18:17] <NigeyS> if the prediction stayed iffy yeah, was going to meet up with Darkside in bath
[18:17] <fsphil> do people shower in bath?
[18:18] <NigeyS> fsphil, yeah, cat and canary
[18:18] Action: fsphil gets his coat
[18:18] <NigeyS> lol phil
[18:18] <number10> what time is the launch for those fsphil
[18:18] <fsphil> oh, still had my coat on :p
[18:18] <NigeyS> lols
[18:18] <fsphil> number10, "any time after 11:00 BST"
[18:18] <daveake> Bath is easily enough for me to track .... except I won't be home
[18:18] <daveake> And I don't think the signal will get to me in Finland!
[18:18] <fsphil> both are identifying themselves as Icarus? get that impression from the email. Upu?
[18:19] <number10> I shall try and track icurus
[18:19] <fsphil> at this point I wouldn't be surprised daveake
[18:19] <daveake> I only have the rubber duck antenna on my AR8000 though.
[18:19] <daveake> I'll tune in and listen :)
[18:20] <number10> I just got a used AR8000 daveake
[18:20] <daveake> cool
[18:20] <number10> seems to work ok
[18:20] <fsphil> I'm trying to think of a way I can listen to both
[18:20] <NigeyS> i can..
[18:20] <daveake> I've been pleased with mine. Not that I have anything to compare it with
[18:20] <NigeyS> i have ure ft-790 and mine
[18:21] <NigeyS> 1 whip, 1 yagi ...
[18:21] <fsphil> ooh
[18:21] <fsphil> that'd work -- two computers?
[18:21] <NigeyS> got 6 here...lol
[18:21] <fsphil> or one computer and two sound cards
[18:21] <fsphil> yikes
[18:21] <fsphil> beats me
[18:21] <NigeyS> lol
[18:21] <number10> tuser6 computers and no transport
[18:21] <fsphil> well, if you don't count the c64 and amigas :)
[18:22] <NigeyS> haha i got a snes to .......... somewhere
[18:23] <fsphil> hmm.. funcube dongle, and a hacky antenna like Darkside made, on the end of a 10m pole
[18:23] <fsphil> that might hear the signal
[18:23] <NigeyS> oo yeah that'd probably work
[18:24] <number10> is there any info online about the two ballons rjharrison is launching
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[18:25] <NigeyS> haven't seen any
[18:26] <fsphil> nah, only seen them being tested on the tracker and the email Upu sent
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[18:35] <fsphil> I wish I had something to launch over the holiday
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[18:50] <jcoxon> for your evening entertainment
[18:50] <jcoxon> GPSL: https://customds.webex.com/customds/j.php?ED=177740107&UID=1230542432&PW=NNzI3YzhmN2M1&RT=MiM3
[18:52] <jcoxon> right time for work
[18:52] <natrium42> jcoxon: nooo
[18:53] <natrium42> work :(
[18:55] <jcoxon> sadly yes
[18:55] <jcoxon> never mind
[18:55] <jcoxon> Bill Brown is doing a talk on spacenear.us in a bit at GPSL
[18:55] <jcoxon> you can join the meeting via that link
[18:55] <natrium42> aah
[18:56] <natrium42> jcoxon: did you see my aprs script?
[18:56] <jcoxon> i read the logs about it
[18:56] <jcoxon> http://www.eoss.org/gpsl/speakers.htm
[18:56] <natrium42> kk, i emailed bill about testing it
[18:56] <jcoxon> oh cool
[18:56] <jcoxon> good work
[18:57] <jcoxon> right really have to go - will be around tomorrow
[18:57] <jcoxon> cya
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[19:01] <cuddykid> created some adverts for helium balloons to get rid of spare helium :)
[19:01] <fsphil> urg that's an awful voip system
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[19:08] <cuddykid> agreed fsphil
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[19:11] <Lunar_Lander> hello
[19:11] <natrium42> fsphil: works very well for me
[19:14] <number10> hello ll
[19:14] <Lunar_Lander> helo number10
[19:16] <Lunar_Lander> +l
[19:16] <Lunar_Lander> GW8RAK_ I will now ask at the chemistry board about the sensor
[19:17] <GW8RAK_> Hi Lunar_Lander, sorry about dropping out last week, but someone turned the server off and I lost connection.
[19:17] <Lunar_Lander> oh ok
[19:17] <Lunar_Lander> no problem
[19:17] <GW8RAK_> This is the ionisation sensor?
[19:18] <Lunar_Lander> yes
[19:20] <GW8RAK_> I must read up on the theory and practice again of ionisation
[19:20] <Lunar_Lander> yeah
[19:20] <Lunar_Lander> the thing is all about the right energies
[19:21] <Lunar_Lander> the electron striking a molecule needs to have W_Ion at least
[19:21] <GW8RAK_> I would still like to try a spark gap with two copper plates. Again it's about energies and how to get them.
[19:21] <Lunar_Lander> if W_Ion is the ionization energy of said molegule
[19:21] <Lunar_Lander> true
[19:21] <Lunar_Lander> molecule
[19:21] <Lunar_Lander> and High Voltage technology is not so nice
[19:22] <Lunar_Lander> it tends to spark in a vacuum
[19:22] <GW8RAK_> Could be tested in a vacuum in the lab
[19:22] <Lunar_Lander> yeah
[19:23] <Lunar_Lander> do you know the little Geiger Counter by Sparkfun?
[19:23] <GW8RAK_> I saw it a long time ago, that would be okay.
[19:23] <Lunar_Lander> yeah
[19:23] <Lunar_Lander> that one also needs HV
[19:23] <Lunar_Lander> there must be a transformer or so on it
[19:24] <GW8RAK_> There's a way of generating high voltage with a chain of diodes IIRC
[19:26] <Lunar_Lander> http://en.wikipedia.org/wiki/Voltage_multiplier
[19:27] <GW8RAK_> That's the one.
[19:27] <Lunar_Lander> ah
[19:27] <natrium42> so, are you guys watching the webcast?
[19:28] <hibby> hmm
[19:28] <hibby> not long till I hit the uk/us hab/geek mashup :)
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[19:40] <Lunar_Lander> btw
[19:40] <Lunar_Lander> best car in the world
[19:40] <Lunar_Lander> http://www.dailymotion.com/video/xjyi7k_top-gear-marauder-17-season_fun
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[21:04] <NigeyS> !bud
[21:04] <HAMBotty> NigeyS says pop a top again HAMBotty. I think I'll have another round.
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[21:26] <griffonbot> @hibbie: Leaving for the first meeting with @LVL1WhiteStar the #ukhas transatlantic mashup in Detroit. [http://twitter.com/hibbie/status/97055533017739264]
[21:28] <Laurenceb_> i dont get the registers rocket plan
[21:30] <NigeyS> heh i gave up trying, and some of the ideas in the forums were err.. slightly unrealistic to say the least
[21:31] <SpeedEvil> 'common sense' doesn't really help.
[21:31] <SpeedEvil> Unless you actually understand the rocket equation.
[21:31] <SpeedEvil> Not to mention aerodynamic drag.
[21:31] <Laurenceb_> they seem half sane
[21:31] <Laurenceb_> then come out with a bunch of retarded designs
[21:32] <NigeyS> the funny 1 was "put the rocket on top of the balloon" mmhmm
[21:32] <Laurenceb_> the thing about launching at 45degrees is true...
[21:32] <Laurenceb_> if you want to go to orbit
[21:32] <Laurenceb_> my n-prize sim works best with about 46degree launch angle
[21:32] <NigeyS> ahh i see
[21:33] <Laurenceb_> and launch from cancun mexico :P
[21:33] <Laurenceb_> also they dont seem to have even realised how hard it is to launch a rocket from a balloon
[21:34] <SpeedEvil> It's easy to launch a rocket from a balloo
[21:34] <SpeedEvil> n
[21:34] <Laurenceb_> and have it fly in circles
[21:35] <NigeyS> heh yeah, loop the loop
[21:38] <griffonbot> @stratoriders: RT @AnthonyStirk: Launch tommorrow from EARS see mail #ukhas [http://twitter.com/stratoriders/status/97058468246208512]
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[21:48] <Dutch-Mill> @natrium42 still in
[21:49] <Lunar_Lander> good night
[21:50] <Dutch-Mill> bye
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[23:17] Action: NigeyS drops a pin
[23:25] Action: SpeedEvil drops a fat beat.
[23:25] <NigeyS> haha good 1 :p
[23:26] Action: SpeedEvil is wondering if he should start putting down the floor in his bedroom.
[23:26] <SpeedEvil> Or if I should just go to sleep. (not in the bedroom)
[23:29] <NigeyS> lol
[23:29] <NigeyS> http://www.dimensionengineering.com/DE-SW050.htm
[23:29] <NigeyS> what a weird looking vreg :|
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[00:00] --- Sat Jul 30 2011