highaltitude.log.20110806

[00:00] <Lunar_Lander> Billy Joel's We Didn't Start The Fire
[00:00] <Lunar_Lander> which he had rewritten
[00:00] <Lunar_Lander> to Wir haben Grund zum Feiern
[00:00] <Lunar_Lander> where the historical incidents were replaced by liquor names
[00:00] <Lunar_Lander> xD
[00:00] <natrium42> haha
[00:01] <Lunar_Lander> http://www.youtube.com/watch?v=aGnmuBOmL5I
[00:03] <natrium42> Lunar_Lander: have you beein in ostfriesland?
[00:04] <natrium42> lol @ song
[00:04] <Lunar_Lander> xD!
[00:04] <Lunar_Lander> yeah, it's nice there
[00:06] <Zuph> natrium42: Going to hook up a Mindflex toy to a 550 J capacitor.
[00:07] <natrium42> sounds safe
[00:07] <natrium42> :D
[00:07] <Zuph> Oh yeah
[00:07] <natrium42> Zuph: where are you located again btw?
[00:08] <Zuph> Louisville, KY
[00:08] <Zuph> Same as DAn
[00:08] <Zuph> *dan
[00:08] <natrium42> aah
[00:08] <Lunar_Lander> where is Dan btw?
[00:08] <natrium42> i am in US&A, atm
[00:09] <Zuph> Right now, Dan is in Canada.
[00:09] <Zuph> natrium42: You still in California? Or am I thinking of someone else?
[00:09] <natrium42> bah
[00:09] <natrium42> yeah, i arrived yesterday
[00:09] <natrium42> had interview with facebook today
[00:09] <Zuph> Neat, how was that?
[00:10] <natrium42> was pretty easy
[00:10] <Lunar_Lander> ah
[00:10] <natrium42> should hear back at the end of next week
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[00:10] <Lunar_Lander> btw
[00:10] <Lunar_Lander> I just read a report about the work at the Kaspersky offices in Moscow
[00:10] <Zuph> What would you be doing there?
[00:10] <Lunar_Lander> was interesting
[00:12] <natrium42> soft eng
[00:13] <Zuph> Well, that makes sense.
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[03:15] <nickolai> http://twitpic.com/61m392
[03:17] <SpeedEvil> Nice
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[03:36] <nickolai> you're looking at the first uno32 board working with an SD card :)
[03:46] <hibby> sweet
[04:22] nickolai89 (~nickolai@ool-4357173b.dyn.optonline.net) joined #highaltitude.
[04:49] <nickolai> except, it's not working too well...
[04:57] <hibby> its a beginning
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[05:58] <codetiger> hi
[05:59] <codetiger> Need some info about Telemetry.
[05:59] GW8RAK (~chatzilla@host-78-144-90-90.as13285.net) joined #highaltitude.
[06:00] <codetiger> Wondering if someone can help me on this
[06:00] <mattltm> Not sure I'll be much help but ask the question so others can see it...
[06:01] <codetiger> I am planning to use RadioMetrix NTX2 and NRX2 pair for telemetry. Am wondering if it works for long range telemetry like in near space balloon project
[06:02] <mattltm> The NRX2 will be useless.
[06:02] <GW8RAK> Morning. The biggest problem is that the NRX2 is not very sensitive.
[06:03] <GW8RAK> You really need a scanner or amateur radio
[06:03] <mattltm> Most projects use an NTX2 for the transmitter and a HAM radio or scanner for the reciver.
[06:03] <mattltm> lol - GW8RAK you are too quick for me :)
[06:04] <codetiger> Also my alternative plan is to use a long range Walkie Talkie as telemetry, in that can, I am wondering how to send the serial data from my Microcontroller into the walkie-talkie's mic
[06:04] <GW8RAK> Not normally. Just up to listen to Arissat
[06:04] <mattltm> codetiger: The NTX2 freq will also drift as it gets cold so you will need a reciver that you can tune to follow the drift.
[06:04] <GW8RAK> codetiger, if you are thinking of the PMR446 radios, there is doubt about the legality of using them airborne
[06:05] <GW8RAK> NigeyS is up early. Picochu is on the tracker already
[06:05] <mattltm> GW8RAK: Ohh.... What freq is Arissat on?
[06:05] <GW8RAK> Although one balloon did use PMR446
[06:06] <GW8RAK> 145.950 FM but the passes are really inconvenient at present. Unless you are an insomniac or don't go to bed till 4 am
[06:06] <GW8RAK> Was just listening for the SSTV with a Moxon aerial and got a few bands of image.
[06:06] <mattltm> codetiger: http://ukhas.org.uk/guides:radio_modules
[06:06] <mattltm> codetiger: http://ukhas.org.uk/guides:linkingarduinotontx2
[06:07] <mattltm> codetiger: http://ukhas.org.uk/guides:tracking_guide
[06:07] <mattltm> That should get you going in the right direction..
[06:07] <GW8RAK> Quite good considering, but the satellite is tumbling a lot so the image is about 50/50 image and noise
[06:07] <GW8RAK> Are you in the UK codetiger?
[06:07] <mattltm> I'll have a tune in and look at it :)
[06:07] <codetiger> I am from India
[06:08] <mattltm> Ah, that changes things.
[06:08] <GW8RAK> Okay, that makes a big difference.
[06:08] <GW8RAK> Are you a radio amateur?
[06:08] <codetiger> I am a near space photography amateur
[06:09] <GW8RAK> Obviously regulations vary a lot around the world. Do you know if you are limited on balloon payload, i.e. weight?
[06:09] <GW8RAK> You could also check with the Indian amateur radio organisation to see if amateurs are allowed to fly transmitters.
[06:10] <codetiger> Am not aware of regulations to fly balloon payloads.
[06:10] <GW8RAK> If they can, the easiest solution is to get an amateur to supply the radio kit, use a commercial UHF or VHF transceiver onboard and track the flight with APRS. (a position reporting system).
[06:11] <GW8RAK> The payload with this approach will be about 1.5kg, but is much easier to track.
[06:11] <codetiger> I am planning to talk to the metrology department here to get some help. The dept is also testing some similar devices.
[06:12] <GW8RAK> Is it a University project?
[06:13] <codetiger> No, this is a personal hobby primarily
[06:13] <nickolai> codetiger: I've been using a Yaesu FT-817NH to listen to the NTX2 and it's been working great
[06:13] <nickolai> look at those links mattltm posted, i've followed them A LOT
[06:15] <GW8RAK> Although it is easier to use amateur radio kit for the position tracking, it is not difficult with the NTX2 transmitter on board. You will easily track it with simple equipment to 250km or more.
[06:16] <codetiger> The last 10 mins gave me a lot of hopes with my project.
[06:16] <GW8RAK> Depending on what you want to achieve, you may well be able to grab other peoples code and just use it. People here are very generous like that.
[06:17] <codetiger> In India, I've lot of difficulties in getting chips/electronic components delivered. The worst part is I've ordered balloon and parachute before 1 yr and never got them.
[06:17] <GW8RAK> That's bad.
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[06:18] <codetiger> I'll try to contact someone who has Ham license here to see if I can track an NTX2.
[06:18] <GW8RAK> A ham is unlikely to have an NTX2. His equipment will be much higher specification
[06:19] <GW8RAK> There may well be something locally produced that you can source
[06:20] <codetiger> @GW8RAK NTX2 onboard and tracking using Ham should work right?
[06:20] <nickolai> radiometrix's website (radiometrix is the company that makes the ntx2) has a section where they list who distributes their products around the world, it's easy to find on google
[06:20] <GW8RAK> Absolutely. The receiver is the most expensive part of the hardware and many hams will have a receiver for 70cm/434MHz
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[06:21] <nickolai> i'm glad someone is getting hope. I just had to cancel my launch attempt for today :(
[06:22] <codetiger> @nickolai I tried contacting the company listed in Radiometrix website that distribute in India but the company only suplies on large orders or to the govt inst. They are not happy to talk to habbyists
[06:23] <nickolai> that's a shame codetiger. I dunno if this would work but maybe order from another part of the world and pay the extra shipping cost?
[06:24] <nickolai> brb, we're gonna try to do a quick and dirty range test with the ntx2 and the 1/4 wave antenna i built from coat hangers earlier today :)
[06:25] <codetiger> I've been trying to do it for the balloons, Parachutes, etc but usually never get response, so I am wondering if someone can order and send it for me. I can pay the complete cost involved through paypal
[06:26] <GW8RAK> codetiger, have a look at Farnell India. They sell Radiometrix products. http://in.element14.com/jsp/search/browse.jsp?N=2103+202523&Ntk=gensearch&Ntt=radiometrix&Ntx=mode+matchallpartial&D=*radiometrix*
[06:26] <mattltm> WOW! Nice linkage GW8RAK!
[06:27] <codetiger> @GW8RAK I just saw this website, they seem to deliver across the globe. Let me check again
[06:28] <GW8RAK> The reason we in the UK use the NTX2 is because it does not need a licence to use airborne in the UK. You will need to contact the Indian radio spectrum licensing organisation to find out if they also have licence free channels.
[06:28] <GW8RAK> You may be lucky and find that you can use a higher power than 10mW to make tracking easier
[06:34] <Upu> Harishankar ! Welcome !
[06:34] <Upu> glad you cound your way here I was going to recommend you to this channel
[06:35] <Upu> codetiger :)
[06:35] <Upu> seems GW8RAK has been helping you out :)
[06:35] <GW8RAK> One does what one can.
[06:35] <codetiger> Yes, I got great help from this channel
[06:36] <Upu> I got your mails was going to respond but been very busy last few days
[06:36] <codetiger> Thanks for recommending UPU
[06:36] <Upu> but nice to hear you've started the project up again
[06:36] <codetiger> yes, after nearly 2 yrs
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[06:37] <codetiger> I've received and tested GPS, temperature and pressure sensors with my flight computer
[06:37] <codetiger> Now working on the telemetry
[06:37] <Upu> sounds like you're almost there
[06:37] <Upu> yeah http://ukhas.org.uk/guides:linkingarduinotontx2
[06:38] <codetiger> meanwhile, I'm still not able to buy balloons and parachutes
[06:38] <codetiger> :(
[06:38] <Upu> speak to Steve Randal aka Rocketboy he might be able to ship to India
[06:38] <Upu> www.randomengineering.co.uk
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[06:40] <Upu> morning edmoore, ok I need to walk the dog
[06:40] <edmoore> morning upu
[06:40] <edmoore> an euphamism for something?
[06:40] Action: Elwell is waiting in for replacement passport :-/
[06:41] <Upu> codetiger I'll be about later on but this channel is your best bet for questions
[06:41] <codetiger> Sure, Thanks for the link for Ballons and parachutes. Thanks a lot
[06:41] <Upu> mainly euro time zone so most people are probably still in bed :)
[06:41] <codetiger> :)
[06:41] <Upu> no problems ok afk
[06:43] <mattltm> Elwell: Not a "1 day" one I hope.
[06:45] <edmoore> codetiger: good morning!
[06:46] <edmoore> you're thinking of making the jump to hab?
[06:46] <codetiger> Good Morning @Edmoore
[06:46] <codetiger> http://www.ihabc.org
[06:46] <codetiger> yes
[06:47] <edmoore> codetiger: superb!
[06:47] <edmoore> well you've found rhe right place for asking questions or just talking shop
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[06:48] <codetiger> am sending email to the RocketBoy for ordering my balloon and parachutes
[06:48] <codetiger> Yes, @Edmoore. I felt the same when I got good response from you guys
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[06:49] <codetiger> Meanwhile, am planning for a payload of less than 1.5 KG. What is the balloon size and parachute size you guys recommend?
[06:49] <edmoore> are you thinking of using an amateur radio transmitter and receiver for telementry?
[06:50] <edmoore> codetiger: a balloon of 1kg or 1.6kg (both available from Rocketboy) should take a 1.5kg payload to well above 30km
[06:50] <codetiger> NTX2 probably and then a Ham receiver
[06:51] <edmoore> as for parachutes, we usually say that you should try and keep the landing speed below 5m/s so as not to damage anything (or anyone! :) )
[06:51] <edmoore> codetiger: re: radio. superb
[06:53] <edmoore> back to parachutes: so we can re-arrange the drag equation (drag = 0.5*density*(velocity^2)*drag_coefficient*area) to say that velocity = sqrt((2*mass*gravity)/(density*drag_coefficient*area)
[06:53] <Elwell> mattltm: nah, replacement normal one
[06:54] <edmoore> the drag coefficient of a parachute is, say, about 0.7. so you can find a parachute area (and therefore diameter) that should work
[06:55] <edmoore> but if that all seems a bit complicated, a parachute of about 1m or 1.5m should be fine :)
[06:59] <edmoore> spherachutes get a lot of praise around here
[06:59] <Darkside> hmm
[06:59] <Darkside> need the tracker cleared
[07:00] <edmoore> codetiger: http://blog.jgc.org/2011/02/gaga-1-parachute.html for an example sphwerachute user
[07:00] <mattltm> Elwell: Thars good. there is a 10 day wait for the "1 day" service!
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[07:00] <Darkside> anyone around with access to the tracker?
[07:01] <nickolai> well, test didn't go too well, cut out at about 1/3 of a mile, which is pretty much where Line of sight was gone too
[07:01] <nickolai> anyways, gotta go to bed, it's 3am here
[07:01] <nickolai> take care all, gnight
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[07:02] <GW8RAK> Darkside, tracker on here
[07:02] <Darkside> i need to get it cleared
[07:02] <GW8RAK> Are you in Wales?
[07:02] <Darkside> i'm not
[07:03] <Darkside> i'm just about to head to the train station
[07:03] <GW8RAK> Don't know how to clear it.
[07:03] <Darkside> you need ssh access to the server
[07:03] <Darkside> natrium42: has it
[07:03] <Darkside> as does juxta
[07:04] <Darkside> but natrium42 is probably asleep, and juxta is backpacking in indonesia
[07:05] <hibby> Darkside: got your passport for customs?
[07:06] <Darkside> >_>
[07:06] <hibby> trollface.jpg
[07:06] <edmoore> Darkside: Randomskk or jonsowman or DanielRichman have it
[07:06] <edmoore> i used to... but i am hopeless
[07:06] <Darkside> heh
[07:07] <Darkside> ok, i'd better head off to the train station
[07:07] <Darkside> i'll hop on IRC from the train
[07:07] <Darkside> cya
[07:08] <edmoore> gluck
[07:08] <Upu> Darkside
[07:08] <Elwell> mattltm: yeah, but paris office aint that bad
[07:08] <Upu> I can clear it
[07:09] <Upu> in fact
[07:09] <Elwell> https://rabbit-hole.org/specifications/ <-- mmmm eeevil
[07:09] <hibby> bed for me
[07:09] <hibby> x
[07:11] <Upu> I can clear the tracker but I can't change the flight name
[07:11] <Upu> spacenear.us isn't run from robs server is it ?
[07:12] <Upu> no its not
[07:14] <codetiger> @GW8RAK Just ordered my NTX2 from element14 Thanks
[07:15] <Upu> ok I've cleared the tracker down
[07:15] <GW8RAK> Codetiger, glad to have been of help. Have fun
[07:15] <Upu> hey codetiger we have a launch this morning if you want to follow it http://spacenear.us/tracker/
[07:16] <codetiger> Once I get those stuff, I'll try to test it with a HAM, am sure someone should own a HAM around
[07:16] <Upu> yeah see if you have a local HAM club
[07:16] <codetiger> Ah @Upu, All the best... I'll keep watching
[07:16] <Upu> not my launch this weekend :)
[07:17] <Upu> its a small foil balloon with a super light payload
[07:17] <Upu> so not going very high
[07:17] <Upu> NigelMoby's flight
[07:17] <GW8RAK> codetiger, contact http://www.arsi.info/
[07:19] <Upu> oh codetiger if you do get a Sphereachute one make sure you ask for HAB attachments
[07:19] <Upu> I forgot
[07:20] <codetiger> you mean balloon attachements?
[07:21] <daveake> I'll try to help track it. Might head out to the nearest hill to get some height :)
[07:25] <Upu> yes codetiger
[07:32] <codetiger> Am moving out for lunch. Will join back soon :)
[07:33] <codetiger> Thanks for great help... I'll keep you updated
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[07:44] <NigelMoby> Omg
[07:44] <NigelMoby> That spider was huuuuge
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[07:52] <edmoore> NigelMoby: how is it going?
[07:54] <Darkside> hey all
[07:54] <Darkside> im in bristol
[07:54] <Darkside> and now im leaving bristol - yay!
[07:56] <Darkside> NigelMoby: ill sms you when im at newpory
[07:56] <Darkside> newport
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[07:56] <Darkside> bbl
[07:57] <edmoore> newpoooooort
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[08:03] <codetiger> Hi again, Am back from lunch.
[08:03] <Upu> wb
[08:03] <codetiger> Did anyone try buying balloons from hwoyee.com
[08:03] <Upu> yes we have some
[08:03] <Upu> shipping costs are the expensive part
[08:03] <Upu> Steve Randal bought a load and I have 3 here
[08:04] <codetiger> any idea what is the cost?
[08:04] <codetiger> of 1000g or 1200g
[08:04] <Upu> the balloons themselves aren't that expensive its the shipping that costs
[08:04] <codetiger> looks like randomengineering is very expensive for me
[08:06] <codetiger> oh, just saw randomengineering is selling hwoyee's products
[08:07] <codetiger> Shipping to India should be much cheaper from china I guess. But wondering if it will save any penny ordering directly
[08:08] <Upu> guess you can try it
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[08:11] <codetiger> what is the parachute made of? what fabric?
[08:12] <codetiger> wondering if I can make it myself, instead of buying those expensive ones.
[08:13] <Upu> rip stop nylon
[08:13] <Upu> see if there any amateur rocketary stores in India
[08:14] <Darkside> im in Wales!
[08:15] <Elwell> Darkside: did you get your vaccinations?
[08:15] <Darkside> lol
[08:16] <Darkside> nope :(
[08:16] <NigelMoby> Lols
[08:16] <NigelMoby> How's the train? :p
[08:17] <Darkside> not bad
[08:17] <Darkside> the tunnel was interesting
[08:17] <Darkside> nfi where iI am
[08:17] <NigelMoby> Lol Wales!!
[08:17] <Darkside> on mam, wheres the apacenear.us android app
[08:18] <NigelMoby> Welcome to cymru
[08:18] <Darkside> I wanna be a chase car!
[08:18] <NigelMoby> Lol chase train!
[08:19] <NigelMoby> Right gonna ring taxi, if u get in b4 me ill meet u outside the main entrance
[08:20] <Darkside> kk
[08:20] <Darkside> shit, im in newport
[08:20] <Darkside> lol
[08:20] <Upu> chase train :)
[08:21] <Darkside> yes
[08:21] <Darkside> wherea the android app upu
[08:21] <edmoore> cusf launch cancelled
[08:21] <Darkside> I neeeeed it
[08:21] <edmoore> chinese balloons escaped
[08:21] <edmoore> again
[08:21] <Upu> escaped ?
[08:21] <edmoore> i've let go of one before aswell
[08:21] <edmoore> they have really large necks
[08:21] <Upu> Darkside http://wdhab.blogspot.com/2011/07/android-tracker.html
[08:21] <Upu> ouch
[08:21] <edmoore> and they slip off our fill tube, despite cable ties
[08:21] <daveake> oops
[08:22] <edmoore> the only other time i've had a balloon escape with a 3kg balloon with 15kg of free lift
[08:22] <Upu> can you change the title on the tracker edmoore ?
[08:22] <edmoore> and that took half of the fill rig with it
[08:22] <Upu> lol
[08:22] <daveake> !!
[08:23] <edmoore> Upu: i'm afraid that while i have been able to admin the tracker, i've lost the details
[08:23] <Upu> the free lift last weekend was something silly like 6-7kg, the balloon was "twanging" in the wind
[08:23] <edmoore> i've not done it for over a year
[08:23] <Upu> ok I can get at Rob server but dunno where spacenear.us is hosted
[08:25] <edmoore> hopefully when habitat arrives it should be abit more 'session-ey'
[08:25] <Elwell> someone hosting on 'liquid web' looking at whois
[08:25] <edmoore> it's owned by natrium
[08:26] <Upu> ok
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[08:31] <LazyLeopard> Anyone seen details on today's possible launch from Cambridge?
[08:35] <LazyLeopard> ...like does it need tracking, and so on. ;)
[08:36] <Darkside> YEEEEAH
[08:36] <Darkside> CHASETRAIN
[08:36] <Darkside> bbl
[08:37] <fsphil> lol
[08:38] <LazyLeopard> All I've seen about is so far is a hint that it's happening, maybe. Nothing useful like times, frequencies, payload names or whatnot. ;)
[08:39] <Upu> haha
[08:39] <Darkside> cancelled
[08:39] <Upu> LazyLeopard Cambridge launch is off
[08:39] <Upu> the ballooon escaped
[08:39] <Darkside> they lost their balloon
[08:39] <Darkside> lol
[08:39] <LazyLeopard> Mind, my tracking laptop has just decided to embark upon a mammoth system update...
[08:39] <LazyLeopard> Ooops! Careless of them.
[08:40] <LazyLeopard> ...so the launch time was supposed to have been early?
[08:40] <Darkside> apparently chinese latex things are loose
[08:40] <LazyLeopard> I guess I'd have slept through it, then. ;)
[08:40] <Darkside> unlike some ither chinese latex things
[08:41] <Darkside> im in cardiff!
[08:42] <Darkside> time to find nigel
[08:42] <fsphil> aaah wales
[08:44] <GW8RAK> Look out for the sheep
[08:44] <fsphil> you went from Bristol to Cardiff Darkside?
[08:46] <Elwell> wot no nice big shed + tarp trick like the aussies?
[08:47] <fsphil> shed with a fridge too
[08:47] <fsphil> on-demand goodies!
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[09:00] <edmoore> shed with a fridge
[09:00] <edmoore> mmm
[09:01] <edmoore> i'm about to have a sherline cnc mill and lathe
[09:01] <edmoore> super excited
[09:01] <edmoore> i will ad a fridge
[09:01] <edmoore> and now i have a shiny macbook air. it shall be my castle
[09:01] <Elwell> mine has a leaky roof - not the same status
[09:02] <fsphil> I've no leaky roof, but got a nasty draft coming up through the floor
[09:02] <fsphil> did have a fridge at one point though -- used it for keeping mealworms :)
[09:02] <Elwell> 's leaking where the flashing joins (or rather, doesn't) the stone + concrete capping
[09:03] <fsphil> it's a feature ... for collecting rain water...
[09:03] <edmoore> in cambridge we have a friend who builds rockets for fun
[09:04] <edmoore> he's also GOD in machine learning circle - chris bishop
[09:04] <edmoore> who runs microsoft research
[09:04] <edmoore> and he gave the christmas lectures a bit ago
[09:04] <edmoore> now... being director of microsoft research seems to be thew way to be able to buy yourself a shed
[09:04] <edmoore> because bugger me, it was like an intel fab facility in his shed
[09:05] <edmoore> spotless and shiny and incredible
[09:05] <edmoore> i just sat there impotently being annoyed that i would never be able to achieve this
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[09:07] <fsphil> all for rocket building?
[09:07] <edmoore> all sorts
[09:07] <edmoore> designing experiments for public outreach, which he does a lot of
[09:07] <edmoore> amateur chemistry
[09:07] <edmoore> rockets
[09:08] <edmoore> his PhD was with Higgs, of boson fame, so he's interested in basic physics too
[09:08] <edmoore> he mastered machine learning just as a side effect of having to do some bayesian inference
[09:08] <edmoore> the bastard
[09:08] <fsphil> excellent
[09:08] <edmoore> but his book is really great
[09:08] <edmoore> one of the best text books i have
[09:09] <edmoore> pattern recognition and machine learning
[09:09] <number10> only people who get their name on wiki are able to afford clean sheds
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[09:12] <edmoore> number10: true dat
[09:13] <edmoore> i need to write a text book, i guess
[09:13] <Randomskk> he sounds pretty epic
[09:13] <Randomskk> edmoore: how did xcode go?
[09:13] <edmoore> Randomskk: all installed
[09:13] <edmoore> but matplotlib and lion have some bugs
[09:13] <Randomskk> nice nice
[09:13] <Randomskk> ah :|
[09:13] <edmoore> easy_install doesn't work yet with it
[09:13] <edmoore> so for now i've installed enthought
[09:14] <Randomskk> pip is what the cool kids use instead of easy_install
[09:14] <Randomskk> however if easy_install doesn't work pip probably won't either
[09:14] <edmoore> likewise pip
[09:14] <edmoore> i easy_installed pip
[09:14] <edmoore> then piped
[09:14] <Randomskk> pythonbrew installs pip too I believe
[09:14] <edmoore> anyway, enthought has got me all set up
[09:14] <edmoore> it also has pyside = win
[09:14] <Randomskk> enthought is pretty neat
[09:15] <edmoore> i'm really loving this machine
[09:15] <Randomskk> oh nice, hadn't seen pyside
[09:15] <edmoore> it's superb
[09:15] <Randomskk> hehe :D
[09:15] <Randomskk> what spec did you end up with?
[09:15] <edmoore> 128/4
[09:15] <Randomskk> oh nice
[09:15] <edmoore> cost only £50 more than the 64/2 with student discount
[09:15] <Randomskk> !
[09:15] <Randomskk> pretty sure the price difference was quite a lot more significant when I bought this
[09:16] <Randomskk> like £200 or something
[09:16] <Randomskk> I guess SSDs are just getting cheaper
[09:16] <edmoore> the joy of student discounts!
[09:16] <edmoore> yeah they really are
[09:16] <Randomskk> so how come you still have a student discount?
[09:16] <edmoore> because i have a student card
[09:16] <edmoore> next?
[09:16] <edmoore> :p
[09:16] <fsphil> haha
[09:16] <edmoore> and my @cam still works
[09:16] <edmoore> for another week i think
[09:16] <Randomskk> haha nice
[09:16] <Randomskk> good timing
[09:17] <edmoore> and he said 'how come you're buying it here when you're at cambridge' and i said 'oh i'm moving to oxford' which is suitable ambiguous as to imply the uni
[09:17] <fsphil> smooth
[09:17] <Randomskk> hah very
[09:17] <edmoore> i know right
[09:18] <edmoore> but yeah, super happy with the purchase
[09:18] <edmoore> oh - habhub private key went down with my last laptop
[09:18] <edmoore> no chance you could fish into nessie and email it to me?
[09:18] <Randomskk> nessie has the private key?
[09:19] <edmoore> i *might* have been stupid enough to copy it there
[09:19] <edmoore> for this situation
[09:19] <Randomskk> it's public/private key auth, nessie should just have the public... okay one sec
[09:19] <edmoore> yes i know, but i sometimes put them in one place to save me from myself
[09:20] <edmoore> but also to nullify the entire point of it
[09:20] <Randomskk> ~ed/.ssh has only habhub.pub
[09:20] <edmoore> oh ok
[09:20] <edmoore> bumsticks
[09:20] <Randomskk> fwiw ssh-copy-id is the quick and easy way to put a key on a new box
[09:20] <Randomskk> anyway if you just regenerate an ssh keypair and give me the pubkey part I'll put it on
[09:20] <edmoore> but how can i put the pub key onto nessie in the first place?
[09:20] <Randomskk> ^
[09:20] <edmoore> ah ok
[09:21] <edmoore> ok i'll do that later. need to get to haslemere for a bbq
[09:21] <edmoore> will take 2hrs as m25 down or something
[09:21] <Randomskk> enjoy :P
[09:21] <Randomskk> oh ouch.
[09:22] <edmoore> oh it's just reigate
[09:22] <edmoore> i'm not going that far
[09:22] <codetiger> am into parachutes, now. Any specific resource where I can get info on building it myself. I am really concerned about total costs
[09:23] <edmoore> codetiger: sure, costs can be a problem
[09:23] <edmoore> the only thing to note is that parachutes can be quite complicated to build
[09:23] <edmoore> the different bwetween a good stable one and an unstable one that won't open properly can be very small
[09:24] <edmoore> aeroconn systems sell parachutes for very cheap
[09:24] <edmoore> but if you want to make one yourself, i would recommend a crossform
[09:24] <edmoore> so shaped like this: +
[09:24] <edmoore> two rectangles at 90 degrees
[09:24] <edmoore> but the ratio of the width and height of the rectangles is important
[09:25] <edmoore> they can be very stable if done right, and are very simple to construct
[09:25] <codetiger> ofcourse, it is going to be complicated. But after bringing my flight computer together, I felt parachute should be much easier for me to construct... :)
[09:26] <codetiger> I'll see if there are any informative resource on the web
[09:26] <edmoore> i can have a look in some references about how to build crossform parachutes
[09:26] <edmoore> or rather, the sizing
[09:27] <edmoore> i work for a parachute consultancy so they should know this!
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[09:27] <codetiger> wow, you guys are of great help.
[09:28] <LazyLeopard> M25 apparently still cancelled between M23 and Reigate, which is probably playing havoc with the stretches approaching the closed section...
[09:28] <edmoore> yeah
[09:29] <edmoore> i'm going to break off at guildford
[09:29] <edmoore> having come in from oxford
[09:29] <edmoore> google traffic suggests that should be ok
[09:30] Action: LazyLeopard had considered going to Reigate Hill...
[09:30] <LazyLeopard> Another year, maybe. ;)
[09:31] <edmoore> :)
[09:31] <edmoore> where are you currently LazyLeopard ?
[09:32] <LazyLeopard> Orpington.
[09:33] <edmoore> ah
[09:33] <LazyLeopard> The non-motorway routes between Godstone and Reigate will be horrible, and it was just a casual outing...
[09:33] <edmoore> wee trek then
[09:33] <LazyLeopard> I expect the garden will get some attention instead.
[09:33] <LazyLeopard> ;)
[09:35] <LazyLeopard> There are back roads that might work, but I expect even they will have more than the ususal traffic on them.
[09:35] <edmoore> it's had a nice time the last week
[09:35] <edmoore> bright sun and lots of rain if it's been anything like ox
[09:35] <LazyLeopard> Yep.
[09:36] <LazyLeopard> Showers on Wednesday, and plenty of rain on Thursday.
[09:38] <edmoore> lots of good veggies
[09:39] <edmoore> right, i'd be start heading
[09:39] <edmoore> drag myself away from this machine
[09:39] <edmoore> glorious as it is
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[09:41] <cuddykid> hi RocketBoy :) have you managed to ship the balloon yet?
[09:42] <RocketBoy> yes
[09:42] <cuddykid> great, many thanks :D
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[09:54] <daveake> Any news on what time picochu will launch?
[09:54] <codetiger> @RocketBoy What are the charges for shipping parachute and balloon to India?
[09:55] <codetiger> am looking for 1200g balloon and hab ready chute.
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[09:58] <jcoxon> morning all
[09:58] <daveake> morning
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[10:04] <jcoxon> we expecting a flight today then?
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[10:07] <daveake> picochu foil balloon in Wales
[10:08] <Elwell> whats the wight of picochu payload?
[10:08] <Elwell> (ish)
[10:12] <GW8RAK> 80/90g I think
[10:12] <rjharrison> Di we have a launch ETA for picochu
[10:13] <Elwell> http://twitpic.com/4r2zlp <-- this it?
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[10:16] <daveake> I asked earlier for a launch ETA but didn't get a reply. The mailing list mail said 11am - 1pm.
[10:16] <rjharrison> lol
[10:16] <rjharrison> I know what it's like on the ground.
[10:17] <daveake> I couldn't even see the netbook screen on mine.
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[10:18] <daveake> I'm about 100 miles away from the launch site. Was thinking about heading up to the nearest hill after launch to see if I can track from there.
[10:19] NigeyS (~EcEnTiAl@cpc5-cdif13-2-0-cust232.5-1.cable.virginmedia.com) joined #highaltitude.
[10:19] <jcoxon> daveake, key is to keep internet connection
[10:19] <daveake> I have a 3G dongle. Should be fine from there.
[10:20] <NigeyS> hey hey
[10:20] <daveake> hey :)
[10:20] <NigeyS> leaving for launch site in about 30mins
[10:21] <daveake> Is it far away?
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[10:28] <cuddykid> has darkside gone over to help?
[10:30] <rjharrison> daveake this lauch won't be too high so you will need a bit of luck
[10:30] <rjharrison> I'm going to give it a dhot from here huddersfield
[10:30] <daveake> Hence the hill :)
[10:31] <cuddykid> malverns might get in the way from here (worcester)
[10:31] <rjharrison> Propagation is weird at the best of times
[10:31] <rjharrison> It's a bit damp today which may help
[10:31] <cuddykid> if I get chance will try and listen
[10:31] <daveake> The Ridgeway is a few miles from here, so it won't take long to pop up there with Yagi, netbook and receiver
[10:32] <daveake> rjharrison - I didn't realise the dampness might help. I was assuming the opposite!
[10:32] <Elwell> RANT Adresse non localisée - Colis non livrè
[10:33] <Elwell> bloody TNT
[10:33] <daveake> I used to have an account with TNT. Completely useless.
[10:36] <Elwell> I wouldn't mind, but this has been 3 weeks now and they still havent managed to deliver it
[10:36] <Elwell> and its my passport which I need on friday
[10:36] <cuddykid> oh dear :S
[10:36] <rjharrison> daveake, well on misty mornings I have dx'ed 300 miles on 2m
[10:37] <daveake> I'm never quite sure if radio propagation works by science or by magic
[10:38] <number10> I thought the whole field of rf was magic
[10:38] <rjharrison> i'd go for magick here too
[10:38] <daveake> A friend of mine at uni got a job designing aerials and such. After 2 years he declared "I still don't know how this stuff works"
[10:39] <rjharrison> too many bloody vars for science well calculating propagation
[10:39] <rjharrison> daveake, lol
[10:43] <M0DTS_Rob> The 'black art' of Microwaves is common!
[10:46] <number10> this is a quote from one of the rf guys at my place We approach RF design systematically and not as a black art
[10:46] <number10> he must be lying
[10:46] <M0DTS_Rob> ha
[10:47] <M0DTS_Rob> My place of work is similar approach but always variable results at 80GHz!
[10:56] <Darkside> ok
[10:56] <Darkside> waiting for a lift
[10:57] <Darkside> looks like we won't be collecting the payload after its landed
[10:57] <daveake> oh?
[10:57] <Darkside> our driver isn't happy with going that far...
[10:57] <Darkside> who else was around this area?
[10:58] <Darkside> http://www.speedtest.net/result/1419994824.png WOW <-- Nigey's internet
[10:58] <rjharrison> Darkside how long till launch
[10:58] <Darkside> Nicel*
[10:58] <Darkside> rjharrison: probably a good hour or so
[10:58] <rjharrison> I have updated spacenear us
[10:59] <Darkside> thanks
[10:59] <Darkside> can you put the frequency on?
[10:59] <Darkside> 434.650MHz, using 4x 36" foil balloons
[10:59] <rjharrison> sure is it 075 or 650
[11:00] <rjharrison> http://spacenear.us/tracker/ Updated
[11:01] <Darkside> cool
[11:01] <Darkside> also can you remove the Darkside_ChaseTrain data please
[11:01] <rjharrison> done
[11:01] <rjharrison> Need a refresh
[11:01] <Darkside> thanks
[11:02] <rjharrison> humm picochu is at a house atm
[11:02] <Darkside> yep
[11:02] <Darkside> thats right
[11:02] <rjharrison> lol ARAF means slow in welsh then
[11:03] <rjharrison> Sat view
[11:03] <Darkside> yup
[11:03] <rjharrison> You @ NigeyS
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[11:04] <Darkside> yu
[11:04] <Darkside> yup
[11:04] <rjharrison> Is here a link to NigeyS poject page
[11:04] <rjharrison> i can put that in the title too
[11:04] <Elwell> rjharrison: you came to a bend in the road then :-)
[11:05] <rjharrison> here = there
[11:05] <Darkside> ok i think were heading off soon
[11:06] <rjharrison> Elwell, sat image of picochu
[11:06] <NigeyS> i like turtles
[11:06] <Elwell> Darkside: pfft. http://www.speedtest.net/result/1417756126.png :-)
[11:06] <rjharrison> When is the camb. Carity launch
[11:06] <rjharrison> Charity
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[11:09] <rjharrison> anyone think of a popular media player for windows
[11:09] <rjharrison> ! windows media player
[11:11] <daveake> VLC
[11:11] <M0DTS_Rob> well that shows my pesky 1.2Mbit adsl here..ha
[11:12] <rjharrison> daveake cool
[11:12] <daveake> Free of cost; free of bloat; seems to cope with everything
[11:12] <M0DTS_Rob> yes i agree vlc is damn good.
[11:16] <Elwell> 's what I'm using at the moment for the IPTV stream from ISP -- seems to work OK
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[11:17] <NigelMoby> Boo
[11:17] <Darkside> can someone,res tr art griffonbit?
[11:17] <Darkside> fuuu
[11:17] <Darkside> restart griffonbot
[11:18] <Darkside> tis not working
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[11:20] <Elwell> (at risk of attracting the wv jpg, it'd be cool if griffonbot could also copy in here when thing on the tracker go up/down every 5k say
[11:21] <Elwell> ie. <baloon> ascending past 10k...
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[11:38] <WillDMobile> Has nige launched yet?
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[11:39] <Elwell> so. tnt office now closed. mutter mutter.
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[11:43] <russss> Elwell: ah well you're technically in the wrong channel for the wv jpeg, but just so you aren't disappointed, http://jonty.co.uk/bits/wv.jpg
[11:43] <Elwell> russss: gee ta :-)
[11:49] <cuddykid> WillDMobile: no, not yet
[11:50] <WillDMobile> Is darkside lost in wales?
[11:52] <cuddykid> not sure - probably!
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[12:03] <Darkside> ok
[12:04] <Darkside> we're launching from a differnet site
[12:04] <Darkside> it was bucketing down at the other site
[12:09] <g3vzv> is anything happening in Camdridge today - balloonwsie that is?
[12:11] <cuddykid> anyone know where to get a rocket igniter from on the high street?!? lol
[12:11] <rjharrison> Yep at a model shop
[12:12] <rjharrison> need 9v to launch though
[12:12] <cuddykid> wouldn't it fire off 5v from arduino?
[12:12] <rjharrison> no almost def not
[12:13] <cuddykid> ahh, thanks for heads up!
[12:13] <rjharrison> You need an ematch for that
[12:13] <rjharrison> Just cleared the tracker
[12:13] <cuddykid> will that be enough to break through small plastic tube?
[12:14] <rjharrison> Possibly but some smokless poweder is considered optimum
[12:14] <rjharrison> WTF are they on a rilway
[12:14] <rjharrison> railway
[12:14] <cuddykid> lol
[12:14] <cuddykid> thanks rjharrison
[12:14] <cuddykid> a licence is required for powder though?
[12:15] <rjharrison> oh I can see them walking around with the pay load
[12:15] <rjharrison> I dont' think so
[12:15] <rjharrison> esp the quantities you need
[12:15] <rjharrison> Try talking to a local gun shop and asking the questino
[12:15] <cuddykid> cool, will do
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[12:25] <cuddykid> WillDMobile: where did you get your explosives from for cutdown device? (if it is pyro!)
[12:25] <cuddykid> asked all the local gun shops but none sell powder
[12:27] <WillDMobile> I made it... Some potassium perchlorate and some aluminium powder, only the smallest amount needed, can always sort some for you.
[12:28] <rjharrison> cuddykid where are you
[12:28] <cuddykid> cheers WillDMobile, will talk when you're back!
[12:28] <cuddykid> rjharrison, worcester
[12:29] <rjharrison> http://www.gunstar.co.uk/Reloading-Equipment/Accessory-For-Sale.aspx?id=8884
[12:29] <rjharrison> try there
[12:30] <cuddykid> thanks!
[12:31] <SpeedEvil> Also - manufacturing small quantities of pyrotechnics is as I understand it completely illegal in the UK without a fireworks factory licence.
[12:31] <rjharrison> correct
[12:32] <SpeedEvil> And unless you are independantly wealthy with a _lot_ of land, you can't do that.
[12:32] <rjharrison> Loosing eye sight fingers etc is down to you cuddykid
[12:32] <SpeedEvil> Flash powder is nasty shit.
[12:32] <rjharrison> Smokeless is very stable
[12:32] <rjharrison> Avoid gunpowder at all costs
[12:33] <SpeedEvil> Why?
[12:33] <rjharrison> Ware gloves and goggles at all times
[12:33] <SpeedEvil> I thought it was fairly stable.
[12:33] <rjharrison> Smokeless is laods more stable
[12:33] <rjharrison> loads
[12:33] <WillDMobile> Cheers rjharrison, will investigate the safe option
[12:33] <rjharrison> Gunpowder = Licence smokless = not
[12:34] <SpeedEvil> In general, always treat the explosive you're working with as if it can go off at any time it's funny.
[12:34] <daveake> I see from the tracker that picochu has reached 41948 m lol
[12:34] <rjharrison> Yep here here to that
[12:34] <SpeedEvil> And explosive has a warped sense of humor.
[12:34] Action: rjharrison thinks optamistic
[12:34] <daveake> Just a little
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[12:39] <cuddykid> just spoke to the guy, he only sells about 1kg of smokeless and have to have licence. However, he recommended getting a 12 gauge cartridge of a friend (fortunately I have one who does some shooting!) and then chopping it and there is smokeless in there
[12:39] <cuddykid> apparently he does it all the time - "to keep the bastards from entering his land" - I quote lol
[12:45] <Darkside> ok
[12:45] <Darkside> about to launch guys
[12:45] <Darkside> lol check out our max altitude
[12:45] <Darkside> :D
[12:45] <Darkside> we rule
[12:46] <SpeedEvil> Darkside: Good luck.
[12:47] <rjharrison> reset tracker
[12:48] <SpeedEvil> Darkside: Burst expected where - 5kmish?
[12:48] <daveake> Good luck guys!
[12:49] <SpeedEvil> Whee!
[12:49] <SpeedEvil> Or not
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[12:52] <number10> whyy are all the streets round there ~
[12:52] <number10> Ynuddu
[12:52] <number10> ynysddu
[12:53] <SpeedEvil> Town planners get drunk too.
[12:53] <number10> lol
[12:54] <SpeedEvil> Woo!
[12:54] <rjharrison> and we're off
[12:54] <SpeedEvil> For real this time.
[12:54] <SpeedEvil> Maybe
[12:55] <rjharrison> yep defo
[12:55] <Darkside> ok
[12:55] <Darkside> its up
[12:55] <Darkside> the gps isnt reporting the correct altitude
[12:55] <SpeedEvil> Ah - GPS lies.
[12:55] <Darkside> well, its reportig the same altitude multiple times in a row
[12:55] <SpeedEvil> Seems quite confused
[12:55] <rjharrison> bloody code :-)
[12:56] <SpeedEvil> Isn't the ascent rather too fast?
[12:56] <Darkside> 2m/s
[12:56] <SpeedEvil> If it's going to burst at 5kmish
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[12:56] <Darkside> its the actual ascent rate
[12:56] <SpeedEvil> Or was that intentional
[12:56] <Darkside> theres 5 balloons
[12:56] <Darkside> one is a bit leaky
[12:56] <SpeedEvil> ah
[12:56] <rjharrison> SpeedEvil if alt is wrong then I guess ascent rate is too
[12:56] <SpeedEvil> I was trying to extrapolate
[12:57] <rjharrison> hehe
[12:57] <SpeedEvil> 100m/min or so
[12:57] <SpeedEvil> which is around 2m/s - yeah
[12:57] <Darkside> ok tinygps isnt updating properly i think
[12:57] <Darkside> like, we're getting the same data on multiple TX sentences
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[13:01] <rjharrison> is lat lng ok?
[13:02] <SpeedEvil> Do you think it's the GPS reporting in error, or your code?
[13:03] <fsphil> ooh it's launched
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[13:04] <Darkside> we're seeing about 2m/s ascent rate from the raw data
[13:04] <Darkside> sorry, on a shit net connection atm
[13:05] <fsphil> signal coverage is already pretty good!
[13:05] <rjharrison> Darkside do you have the actual monitoring freq?
[13:06] <Darkside> 434.6529 oon my scanner
[13:06] <fsphil> tuned, if it gets to 10km I might hear it
[13:06] <M0DTS_Rob> it'l be a while even if i do hear anything..hi
[13:06] <Darkside> it wont
[13:06] <fsphil> I know :)
[13:06] <fsphil> might get some aircraft scatter
[13:07] <Darkside> lol
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[13:07] <Darkside> 1393m
[13:07] <Darkside> not uploading properly
[13:07] <cuddykid> will have a listen in from worcs
[13:07] <Darkside> as 3g signal is shit...
[13:07] <Darkside> i think itd timing out
[13:07] <Darkside> any globaltuners around this area?
[13:08] <fsphil> wasn't last time I checked, will have a look
[13:08] <rjharrison> daveake you hearing anything?
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[13:08] <Darkside> 1553m
[13:08] Nick change: GW8RAK_ -> GW8RAK
[13:08] <fsphil> nope
[13:08] <fsphil> there's one on the isle of man :)
[13:09] <fsphil> nearest one is in london
[13:09] <Darkside> heh
[13:09] <fsphil> this is really cool
[13:09] <Darkside> ascent rate seems to have slowed to around 1/2-1.5m/s
[13:10] <fsphil> aah, could be near the limit already?
[13:10] <fsphil> 1.6km
[13:10] <LazyLeopard> Any guesses how high it'll get and where it's likely to end up?
[13:10] <cuddykid> nothing here
[13:10] <Darkside> the balloons are all full
[13:10] <Darkside> but wind will blow this one around a lot
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[13:11] <Darkside> hey Vk5zsn
[13:11] <fsphil> ooh, managed to crash dl-fldigi
[13:11] <Darkside> hahaha
[13:11] <Darkside> we're gonna need to break out the yagi in a sec
[13:11] <fsphil> and typically doesn't crash when I try it in gdb
[13:12] <Vk5zsn> Hi mark
[13:12] <fsphil> 1.9km
[13:12] <Darkside> 434.6536
[13:13] <g3vzv> nothing here in bedfordshire yet
[13:13] <fsphil> woo, 2km
[13:14] <fsphil> the altitude graph is nuts
[13:14] <Darkside> yeah the 40km spike
[13:14] <fsphil> I don't have that
[13:14] <fsphil> just a very wibbly wobbly line
[13:14] <LazyLeopard> That got cleaared. ;)
[13:15] <LazyLeopard> Yeah, the altitude seems to stick a while, then jump...
[13:16] <fsphil> seems to be levelling off
[13:16] <fsphil> no, another jump
[13:16] <LazyLeopard> Hmmm... Wonder whether it's worth getting my yagi up...
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[13:17] <fsphil> at this rate, yea
[13:18] <fsphil> looks like it's going to go between Newport and a town I can't spell
[13:19] <Darkside> 1.7m/s ascent rate
[13:19] <Darkside> approx
[13:19] <fsphil> almost 2.5km
[13:20] <Darkside> 2539m
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[13:21] <daveake> I'm on on my hill :-). I think I can just make out something audibly
[13:21] <fsphil> king of the hill
[13:21] <GW8RAK> What shift should we be using and bits/stop bits etc?
[13:21] <Darkside> choose picochu-1 from the list
[13:22] <GW8RAK> I guessed right for a change. Thanks
[13:22] <daveake> Yep, can just about hear it now
[13:22] <daveake> fsphil lol
[13:23] <fsphil> I wonder if I'd have any luck on the local mountain
[13:23] <fsphil> would never make it in ime
[13:23] <fsphil> time
[13:23] <daveake> Can see the 2 lines now on the waterfall
[13:24] <daveake> Hey, got the $$ID bit :-0
[13:24] <fsphil> wow, 3km
[13:24] <daveake> Might even get a full packet at this rate lol
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[13:24] <fsphil> you're in a good spot for tracking daveake
[13:24] <NigelMoby> Hey guys
[13:24] <fsphil> esp. if it floats
[13:24] <daveake> that was the plan :)
[13:24] <fsphil> g'day NigelMoby, congrats :D
[13:25] <daveake> Indeed!
[13:25] <NigelMoby> We made 3k
[13:25] <g3vzv> can now see it on the waterfall its very very weak here:(
[13:25] <GW8RAK> I've spurii all over the place today
[13:25] <fsphil> lovely clear band here, but obviously no signal
[13:26] <fsphil> though if it keeps ascending....
[13:26] <fsphil> it's already higher than I thought it would get - considering they where launched full
[13:27] <M0DTS_Rob> great stuff.. like this idea of small scale launches.
[13:28] <fsphil> indeed!
[13:28] <fsphil> trickier to track fair enough
[13:28] <fsphil> 3.5km
[13:30] <M0DTS_Rob> Really bad thunderstorms around here so will have to go lower antennas... back later if it goes away!
[13:30] <SpeedEvil> What's the altitude till it's on your horizon - you're quite close fsphil.
[13:30] <fsphil> oooooh
[13:31] <fsphil> I think it needs to get to 10km before I'll hear it SpeedEvil
[13:31] <fsphil> doubtful it will
[13:32] <fsphil> though it's showing no signs of slowing
[13:32] <fsphil> this is the first welsh launch I think
[13:33] <NigelMoby> We had an avr hang its Bk now
[13:33] <Laurenceb_> wow
[13:34] <Laurenceb_> thats going up slowly
[13:34] <Laurenceb_> predictions working?
[13:35] <NigelMoby> Hung again
[13:36] <Laurenceb_> i predict a flow
[13:36] <Laurenceb_> *float
[13:39] <Laurenceb_> oh foil
[13:39] <Darkside> hey all
[13:39] <Laurenceb_> watchdog timer?
[13:39] <Darkside> avr is hanging
[13:39] <Laurenceb_> :S
[13:40] <LazyLeopard> Dial frequency?
[13:40] <fsphil> eek
[13:40] <Darkside> 434.651
[13:40] <Darkside> we're just getting carrier atm
[13:41] <daveake> Same here
[13:41] <daveake> Lost data a few minutes ago
[13:41] <Darkside> yup
[13:42] <Darkside> so we thinkthe avr has broken
[13:42] <Darkside> or somthing else has failed
[13:43] <daveake> The wind up here is whistling at a signpost. It's making a fair attempt at RTTY itself !
[13:43] <Darkside> daveake: do you have a yagi?
[13:43] <daveake> Yep
[13:43] <Darkside> can you give us a rough bearing?
[13:43] <Darkside> actually nvm
[13:43] <Darkside> gonna be too hard to do it that way
[13:44] <daveake> "west" :)
[13:44] <daveake> Weak now ... coming down I think
[13:45] <Darkside> its still strong here
[13:45] <Darkside> and i'm using the FCD
[13:45] <daveake> FCD?
[13:46] <Darkside> funcube dongle
[13:46] <daveake> Ah
[13:46] <Darkside> we just saw an interesting vriation in the frequency of the carrier
[13:46] <daveake> Ooh, a whistle
[13:46] <Darkside> DATA
[13:46] <LazyLeopard> If that's the carrier I'm seeing then it's a bit wobbly...
[13:47] <daveake> Pretty sure I heard data there
[13:47] <Darkside> its burat
[13:47] <Darkside> 3579m
[13:47] <Darkside> burst
[13:47] <Darkside> so we've missed the burst point
[13:47] <Darkside> maybe
[13:47] <Darkside> depends what it does
[13:47] <fsphil> still getting data?
[13:48] <daveake> 3483m
[13:48] <M0DTS_Rob> will only one balloon burst or will one trigger the others maybe?
[13:48] <daveake> Got some of a packet
[13:48] <fsphil> wow it's travelled huge distance
[13:48] <fsphil> descending
[13:48] <daveake> I got 51.64686,-2.95220,3464
[13:48] <fsphil> yar, one of the balloons has gone
[13:48] <Darkside> yep
[13:48] <Darkside> we're decoding again here
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[13:49] <daveake> cool
[13:49] <daveake> Still haven't seen a complete packet, but it's not far off
[13:49] <LazyLeopard> Just barely detectable here...
[13:49] <fsphil> wonder what happened
[13:49] <Darkside> fsphil: AVR buggered up i think
[13:49] <rjharrison> temp shageed osc.
[13:49] <Darkside> i think people should start including watchdogs :P
[13:49] <daveake> :)
[13:49] <fsphil> yea
[13:49] <Darkside> rjharrison: we used a crystal
[13:49] <LazyLeopard> ...and as it seems to be descending, that's unlikely to improve.
[13:49] <fsphil> think I'll do that next time
[13:50] <rjharrison> what avr? they should be good to -40
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[13:50] <daveake> 3295m
[13:50] <Darkside> hey Vk5zsn its workign again
[13:50] <Darkside> falling
[13:50] <daveake> I so want to get at least 1 complete packet lol
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[13:51] <Laurenceb_> wow its floating
[13:51] <LazyLeopard> I suspect I'll have to be content with a few scattered digits... ;)
[13:53] <daveake> Wonder what happened with the AVR ... it hasn't rebooted 'cos the sequence number is up in the 300's
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[13:54] <Darkside> its going down slowly
[13:54] <M0DTS_Rob> if the oscillator froze the restarted then avr would nor reset would it?
[13:54] <M0DTS_Rob> *not reset
[13:54] <Darkside> nfi
[13:56] <mattltm> Has Picochu gone?
[13:56] <Darkside> hey mattltm its in teh air
[13:56] <rjharrison> http://spacenear.us/tracker/#
[13:56] <mattltm> Very cool. :)
[13:56] <rjharrison> http://spacenear.us/tracker/ even
[13:56] <daveake> No, that wouldn't reset it without a watchdog
[13:57] <M0DTS_Rob> poor crystal then maybe.
[13:58] <Darkside> daveake: are you getting data now?
[13:58] <Darkside> if you vcan collect it,, please do
[13:58] <M0DTS_Rob> Is it going to be recovered?, if so then put it in the freezer afterwards and find out ;-)
[13:59] <Darkside> or Willwe wont be collecting it
[13:59] <Darkside> someone else can, if they want
[13:59] <Darkside> ack
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[14:00] <SpeedEvil> Landing just over the river?
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[14:01] <M0DTS_Rob> multiple balloons make descent much slower
[14:01] <SpeedEvil> yeah - as only one bursts
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[14:03] <Zuph> Thus far, Picochu has taught me that Wales has too many consonants.
[14:03] <Darkside> we're having trouble getting signal here
[14:04] <SpeedEvil> :/
[14:04] <LazyLeopard> You folks mobile and chasing, or at base?
[14:04] <SpeedEvil> Where is NigelMoby ?
[14:04] <Darkside> base
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[14:05] <SpeedEvil> ah
[14:05] <SpeedEvil> I suppose with these sorts of launches a chase car is pretty much mandatory if it's going any distance.
[14:06] <LazyLeopard> Especially as they tend to drift a long way at low altitude.
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[14:10] <Darkside> descending slooooooooowlty
[14:11] <daveake> 2066m
[14:12] <Darkside> yup
[14:12] <fsphil> slowing down
[14:12] <Darkside> can you decode?
[14:13] <daveake> 1901m. Very weak signal.
[14:13] <fsphil> guess we're going to lose this one
[14:14] jcoxon (~jcoxon@92.40.253.246.threembb.co.uk) joined #highaltitude.
[14:14] <fsphil> we should do a foil launch at the conference :)
[14:14] <M0DTS_Rob> shame we cant have HF telemetry..
[14:15] <fsphil> mmmm
[14:15] <jcoxon> interesting altitude profile
[14:16] <fsphil> the top was cut-off unfornatually, lost telemetry
[14:16] <jcoxon> yeah i thought that
[14:16] <fsphil> looks like it got just over 4km
[14:16] <fsphil> higher than I expected
[14:17] <jcoxon> lost one balloon do we think?
[14:17] <fsphil> looks like
[14:17] <jcoxon> descent is slowing though
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[14:18] <fsphil> I think it'll reach england
[14:18] <LazyLeopard> Tried plugging measured ascent, descent and burst altitude into the predictor and seeing where it thinks it'll land?
[14:19] <Darkside> 1421m
[14:19] <fsphil> any useful coordinates?
[14:21] <jcoxon> were the balloons filled fully
[14:21] <LazyLeopard> Launch was from somewhere close to 51.52870,-3.39505
[14:22] <LazyLeopard> (from the raw log)
[14:24] <M0DTS_Rob> fsphil: any sign of your payload from earlier this year?
[14:24] <fsphil> M0DTS_Rob, not a peep. has hoping someone would have stumbled across it by now
[14:24] <fsphil> it might be up a tree, would be hard to spot
[14:25] <M0DTS_Rob> yes would have thought so... not much chance of finding it now though as we didnt thave a good landing location, very large area to start searching!
[14:26] <fsphil> yep! anywhere within a 3km area I think
[14:27] <M0DTS_Rob> yes.. quite a challenge!!
[14:27] <fsphil> just a shame about the antenna - we'd at least have gotten the live images
[14:28] <M0DTS_Rob> probably would have recovered it then too
[14:28] <M0DTS_Rob> never mind.. i'm waiting for next one ;-)
[14:28] <fsphil> september :)
[14:29] <M0DTS_Rob> super
[14:29] <fsphil> This one with be bright yellow
[14:29] <fsphil> will*
[14:29] <Darkside> ok we're moving to a higher location
[14:29] <Darkside> to try and get the last few sentences of teleemtry
[14:29] <M0DTS_Rob> strobe attached?!
[14:29] <fsphil> ooh a strobe
[14:30] <M0DTS_Rob> or camera flash.....
[14:30] <fsphil> I've got some 2 watt red LEDs
[14:30] <fsphil> for the optical rtty thingy
[14:30] <M0DTS_Rob> :-)
[14:30] <fsphil> that might double as a strobe
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[14:31] <fsphil> I think a GSM backup is essential for another long range flight
[14:31] <Darkside> yeah
[14:31] <Darkside> +1 on that
[14:32] <rjharrison> fsphil let me know when you do the irish sea launch
[14:32] <fsphil> will do rjharrison
[14:32] <rjharrison> will help recover
[14:32] <Darkside> daveany data?
[14:32] <fsphil> it'll probably be over the winter months again
[14:33] <fsphil> reminds me, I need to get more A560's
[14:33] <M0DTS_Rob> i'm not going looking in 4" of snow again like last time...hi
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[14:34] <fsphil> no snow :)
[14:34] <fsphil> if there's snow on either side I'll not launch
[14:34] <M0DTS_Rob> nearly got stuck on many occasions on thet trip ...fun though
[14:35] <fsphil> if the conditions in september show it going that far, I'll give it a go
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[14:35] <fsphil> would be a better month to do it
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[14:36] <rjharrison> fsphil cool
[14:36] <rjharrison> I'll look forward to it
[14:37] <rjharrison> be good for english irish relations :-)
[14:37] <fsphil> lol
[14:37] <rjharrison> Get number10 on to it as in downing street
[14:37] <rjharrison> rather than our very own number10
[14:37] <daveake> :)
[14:38] <RocketBoy> have the rainbow trust guys flown yet?
[14:38] Action: fsphil sat in the prime ministers seat on the commons once :)
[14:41] <Darkside> no signals on this hill
[14:42] <fsphil> :(
[14:42] <NigelMoby> Hey Steve
[14:42] <Darkside> prolyl down
[14:42] <fsphil> got contact details on it?
[14:44] <RocketBoy> NigelMoby: hey - have you found it?
[14:45] <RocketBoy> looks like burst was at 5000m as predicted!
[14:45] <NigelMoby> No, its gone past our chase limit. It was bear chepstow at 1.4k though
[14:46] <NigelMoby> We think around 4.2km burst, we had a 15min loss of gps
[14:46] <fsphil> what are the odds Darkside hears it on the train on the way back
[14:46] <fsphil> oh Darkside forgot to ask, you using the fcd directly in dl-fldigi or via spectravue?
[14:47] <NigelMoby> Directly
[14:47] <fsphil> sweet
[14:47] <fsphil> it seemed to be working as well as your radio NigelMoby
[14:48] <fsphil> same antenna?
[14:48] <RocketBoy> NigelMoby: Interesting - i'll plug your data into my descent calculator and see what i think burst was
[14:48] <NigelMoby> Fcd is not as sensitive
[14:49] <NigelMoby> Nowhere near
[14:50] <g3vzv> the fcd needs a filter when us with a simple antenna otherwise the s/n is v poor so it feels deaf:)
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[14:54] <fsphil> I need a good filter for 434mhz
[14:54] <fsphil> got a pre-amp but I suspect it'll overload the fcd
[15:00] <Laurenceb_> looks a bit dead
[15:01] <Laurenceb_> might have landed by now
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[15:05] <jcoxon> looks like a fun flight though
[15:07] <jcoxon> anyone got a ascent rate for picochu?
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[15:12] <daveake> About 1.5m/s I think
[15:12] <LazyLeopard> The GPS was being a bit jumpy, so the reported value was rather variable...
[15:12] <LazyLeopard> Looking at the graph on the tracker, I'd say about 1.7m/s
[15:13] <LazyLeopard> ...though faster in first 500 metres, and slower at altitude.
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[15:14] <LazyLeopard> Descent seemed slower, maybe -1m/s
[15:15] <LazyLeopard> ,,,but tracking was even more intermittent there...
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[15:19] <jcoxon> http://ukhas.org.uk/projects:microballoons:data
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[15:23] <number10> was out - looks like lost contact at 200m
[15:24] <jcoxon> on descent or ascent?
[15:25] <number10> on descent looking at tracker
[15:25] <jcoxon> you mean 2000m?
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[15:28] <number10> yes sorry 2km
[15:32] <Elwell> re flash powder -- tried a stage supplier?
[15:34] <Darkside> jcoxon: 105g payload weight
[15:40] <jcoxon> oh great
[15:40] <jcoxon> pleased with my table - got some good info on it
[15:41] <fsphil> any thoughts on stopping the foil balloons bursting?
[15:41] <jcoxon> well i think the key is just putting enough He in them to ascend
[15:41] <jcoxon> so something like 0.3m/s ascent rate
[15:42] <jcoxon> bbiab
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[15:43] <fsphil> I wonder if they where filled so they float, and add a sacrificial latex balloon to lift it up
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[15:51] <NigeyS> hey hey
[15:51] <NigeyS> thanks to anyone that was attempting to track picochu earlier :)
[15:57] <daveake> No problem :-). Good practice for chasing mine next time!
[15:58] <NigeyS> :d did you get any decodes dave ?
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[15:58] <NigeyS> jcoxon, :)
[15:58] <daveake> No complete sentences, no, just a few parts
[15:59] <daveake> I've got a couple of wav files in case you want them
[15:59] <jcoxon> hello NigeyS
[15:59] <NigeyS> ahh shame :/ anyways we tracked it to 1.4km then it was out of range by the time we relocated
[15:59] <jcoxon> recovered?
[15:59] <NigeyS> at 1.4km it was just east of chepstow
[15:59] <NigeyS> nooo, it was going way to far
[15:59] <daveake> It was just below 2km when I lost it, IIRC
[16:00] <jcoxon> NigeyS, well good data!
[16:00] <NigeyS> it followed the 5000km prediction quite well mind
[16:00] <jcoxon> i've made a table
[16:00] <daveake> 5000km eh? ;-)
[16:00] <jcoxon> NigeyS, http://ukhas.org.uk/projects:microballoons:data?&#flight_stats
[16:00] <NigeyS> awsome, thanks!
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[16:00] <NigeyS> we lost gps for a good 15mins
[16:01] <jcoxon> 100% fill would you say?
[16:02] <NigeyS> oh yes, definately
[16:02] <NigeyS> ascent rate seemed a nice steady 2.0m/s
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[16:02] <NigeyS> descent rate, between 0.6 and 1.0m/s
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[16:03] <NigeyS> we had a problem with 1 of the balloons, the valve leaked so had to replace that balloon
[16:04] <jcoxon> i see
[16:04] <jcoxon> so whats the plan now?
[16:04] <NigeyS> but overall, i think we got some good data, was good to see the insulation did it's job, temp didnt drop below 14c
[16:04] <jcoxon> nice
[16:05] <NigeyS> well, i want you and steve to see how helpful the data is, try and find what caused the gps loss, then try to get a SP
[16:05] <jcoxon> check the table - is the data correct do you think?
[16:06] <NigeyS> looks good, id say increase our ascent rate a bit, probably an avergae on 1.7 - 2.0
[16:06] <jcoxon> shall we say 1.8 then?
[16:06] <NigeyS> sure, that sounds reasonable
[16:06] <jcoxon> numbers of course will be rough
[16:07] <NigeyS> yup, hope theyre useful though
[16:07] <jcoxon> so looking at the table roughly halving the fill doubles the burst alt
[16:07] <jcoxon> which makes sense
[16:07] <NigeyS> seems to be a good concensus yeah
[16:08] <jcoxon> and that for super-pressure you need to have an even lower ascent rate
[16:08] <NigeyS> interestingly, the descent rate is the same as picoatlas 2
[16:08] <jcoxon> (ignoring flight 1 where we have a mix of balloons hence not being useful)
[16:08] <jcoxon> that makes sense though
[16:08] <jcoxon> similar payload weight and the burst of 1 balloon
[16:08] <NigeyS> yup, i think, ascent of 1m/s or even less would be something to aim for
[16:08] <jcoxon> oh i think 0.3m/s
[16:09] <NigeyS> hmm interesting, certainly worth trying
[16:09] <jcoxon> basically you'd fill indoors
[16:09] <jcoxon> add perhaps some string to the bottom of the payload
[16:09] <jcoxon> get it to neutral bouyancy
[16:09] <jcoxon> cut some of the string to get it to a point that it starts ascending
[16:09] <jcoxon> then take it outside and launch
[16:10] <NigeyS> yup, that would probably the ideal way to do it
[16:10] <jcoxon> looking at my calander i reckon i can launch picoatlas III 25-27 August
[16:11] <NigeyS> awsome!
[16:12] <NigeyS> wow that altitude graph looks funky
[16:14] <Upu> picochu still up ?
[16:15] <NigeyS> should be down by now, we lost it at 1.4km at about 0.6m/s
[16:15] <Upu> ok
[16:15] <NigeyS> just north of chepstow
[16:15] <Upu> didn't manage to hear it
[16:17] <jcoxon> bbl
[16:17] <NigeyS> dam :(
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[16:17] <NigeyS> just going through the partial lines of data to see where exactly we lost it
[16:19] <fsphil> an underfilled foil balloon with negative lift on the ground, would the lift increase if the outside pressured dropped?
[16:19] <fsphil> say it was lifted up to 2km
[16:19] <NigeyS> thikn so
[16:19] <NigeyS> think*
[16:20] <NigeyS> btw phil, the shagi performed great :)
[16:20] <fsphil> I was thinking earlier about having a small party latex balloon to lift it up
[16:20] <fsphil> ooh sweet! forgot you where flying that
[16:20] <fsphil> that's two successes
[16:20] <fsphil> did you leave the shielding dangling or tape it to the payload?
[16:21] <NigeyS> dangline, darkside tinned the radials a bit to stiffen them up
[16:21] <NigeyS> dangling*
[16:21] <fsphil> good thinking
[16:21] <NigeyS> got a vid tp upload ...
[16:21] <fsphil> that's a good sign, I thought the radials would have to be stretched out
[16:21] <fsphil> I'm loving these foil launches
[16:22] <fsphil> going to have to get in on the action :)
[16:22] <NigeyS> haha yush, ok, we lost the payload, but it was designed with that inmind
[16:22] <fsphil> I'd probably have the same flat
[16:22] <fsphil> flaw*
[16:22] <fsphil> though I have a working car now
[16:22] <fsphil> but it'll probably drift out to sea
[16:22] <NigeyS> i desperately need to track down that gps outage though
[16:22] <fsphil> odd one that
[16:22] <fsphil> and that it happened twice
[16:23] <fsphil> second time longer
[16:23] <NigeyS> we had a carrier, and the telem count didnt go up or down, it seemed to hang and then resume
[16:23] <fsphil> gps bug possibly
[16:23] <NigeyS> wasnt temp related, the line b4 the outage read 14c
[16:24] <NigeyS> possibly, but its the same code ive put on ats-1 so if its a code issue i need to fix it asap
[16:25] <fsphil> do you have any way of feeding the payload fake gps data?
[16:25] <NigeyS> hmm i can probably find a way
[16:25] <NigeyS> we did add a xtal to it at the last minute, doubt that was a factor though
[16:26] <fsphil> can take the data from todays flight and make some fake gps data from it, retrace the flight
[16:26] <NigeyS> i compiled the code onto a new chip burned for 16mhz last night
[16:26] <fsphil> must have worked or the rtty speed would be way off
[16:27] <fsphil> I like the idea of a watchdog timer
[16:27] <fsphil> someone suggested one earlier
[16:27] <NigeyS> yup, possibly moisture, we had a terrential downput right b4 launch so relocated to my sisters, wondering if any water got in there
[16:28] <NigeyS> yeah Darkside is going to make 1 for mini-nut
[16:28] <fsphil> any idea why the altitude graph is so jittery?
[16:28] <NigeyS> wouldnt have been so bad if it was earlier or later i the flight but we missed the burst altitude! lol
[16:28] <NigeyS> im guessing low cloud layers
[16:29] <cuddykid> uhhhh :S , just got back - what's happened NigeyS?
[16:29] <NigeyS> hey cuddykid, a pretty exciting launch hehe
[16:29] <NigeyS> we had rain, a gps outage, a broken balloon .. but still got good data hah!
[16:30] <fsphil> a successful failure :)
[16:30] <cuddykid> ahh! so you retrieved it?
[16:30] <NigeyS> noo, it went to far to chase
[16:30] <cuddykid> oh :(
[16:30] <NigeyS> its definately somewhere in england though
[16:30] <fsphil> did you have contact details on it?
[16:30] <cuddykid> maybe someone will stumble across it!
[16:30] <fsphil> it may re-launch itself in the morning
[16:30] <NigeyS> fsphil, no, and for good reason, we were slightly above the 2m limit
[16:30] <fsphil> ah
[16:31] <NigeyS> it followed the 5km prediction fairly well so im guessing its somewhere near hereford by now
[16:31] <fsphil> I think I'll try making a payload dead-bug style
[16:32] <fsphil> should be ultra light
[16:32] <cuddykid> well.. just got back from town and got some 12" latex balloons that I'm hoping to sell tomorrow at the car boot to make some money back on left over helium :)
[16:32] <fsphil> good luck :)
[16:32] <NigeyS> cuddykid, good idea :D
[16:32] <NigeyS> fsphil, do it!
[16:33] <NigeyS> we swapped the lipo for 3 aaa lithiums so our weight went up a bit
[16:33] <fsphil> I noticed someone down the town today selling balloons
[16:33] <cuddykid> thanks, hopefully I'll sell a few at least - in Worcester loads and loads of little kids had balloons - think they were giving them out free somewhere :S
[16:33] <cuddykid> fsphil, yeah, they must make a reasonable amount - wonder if you need a licence to sell on street
[16:33] <fsphil> I wondered the same, I think you do
[16:34] <cuddykid> damn, otherwise, maybe a good source of funding for HAB!
[16:34] <fsphil> did you launch into cloud NigeyS?
[16:35] <NigeyS> oh yes there was lots of cloud
[16:35] <fsphil> notice the speed dropped pretty quickly - I wonder if you collected a lot of moisture
[16:35] <fsphil> at around 600m
[16:35] <NigeyS> we literally launched 20mins after a terrential downpour
[16:35] <NigeyS> sounds about right
[16:36] <fsphil> or, the cloud cooled the balloon - that might reduce the lift
[16:36] <fsphil> seems to speed up again at 1000m
[16:36] <NigeyS> interesting
[16:37] <fsphil> it is!
[16:37] <fsphil> I can't explain any of it but it's fascinating :)
[16:37] <NigeyS> see i was wondering if the damaged balloon we left on deflated and obscured the gps
[16:37] <NigeyS> losing lock for a while
[16:37] <daveake> Just having a look at what I recorded earlier. Last readable position I got was 51.68362,-2.75489,1901
[16:37] <fsphil> that's likely
[16:37] <NigeyS> daveake, awsome, that'll help alot!
[16:38] <daveake> Glad to have actually been of use then :-)
[16:38] <daveake> Do you want the wav files?
[16:39] <NigeyS> oh please :D
[16:39] <daveake> Just a mo then
[16:39] <NigeyS> last altitude we had was 1473 iirc
[16:40] <daveake> Better than mine then! Last on the tracker was 2044 IIRC
[16:43] <NigeyS> yup
[16:44] <NigeyS> hmm manual insertion not working
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[16:45] <edmoore> how did the welsh launch go?
[16:47] <NigeyS> not to bad Ed
[16:47] <NigeyS> hickup with the gps so lost a good 15mins of data
[16:47] <daveake> NigeyS file 1/2 http://dl.dropbox.com/u/368443/picochu_1%201.wav
[16:48] <edmoore> still up?
[16:48] <daveake> Floating in the Severn probably ;)
[16:48] <NigeyS> edmoore, nah, itll be down by now, we lost it near chepstow
[16:48] <daveake> Was 62.5 miles from me when I lost contact
[16:49] <NigeyS> thats pretty good!
[16:50] <daveake> For the altitude, yes!
[16:54] <daveake> NigeyS file 2/2 http://dl.dropbox.com/u/368443/picochu_1%202.wav
[16:54] <NigeyS> nicey, tnx dave
[16:54] <daveake> no problem
[16:55] <daveake> Any gaps are where I unplugged to have a listen and try and get a better signal from the Yagi.
[16:55] <daveake> Must get round to modifying my AR8000 so the speaker stays on with the audio cable plugged in.
[16:58] <NigeyS> i had a knightmare trying to get the radio audio coming out of the laptop speaker, drove me nuts!
[16:58] <daveake> Yeah, I've had trouble with that before, so I thought she soldering route might be easier!
[16:59] <daveake> On my main PC it does come out the speakers already, but on my netbook it doesn't.
[16:59] <daveake> Also have a laptop but dl-fldigi doesn't hear the audio in at all on that (even though other apps do)
[17:00] <NigeyS> weird
[17:00] <daveake> Indeed
[17:01] <edmoore> NigeyS: what os?
[17:01] <NigeyS> windows 7
[17:01] <edmoore> ah
[17:01] <edmoore> i found audio confusing in win 7
[17:02] <NigeyS> it was ok fldigi, and decoding but but it wouldnt come out of the pc speakers aswell, kinda annoying as had to unplug it everytime i wanted to check if the yagi was in the right direction!
[17:03] <daveake> Same here on the netbook.
[17:03] <daveake> It should be really easy to fix by moving a wire on the AR8000's audio socket
[17:04] <NigeyS> hopefully :D
[17:05] <NigeyS> fsphil, ya know what id like to do next time
[17:05] <NigeyS> get a temp sensor on 1 of the balloons
[17:05] <NigeyS> rather than the payload itself
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[17:10] <cuddykid> edmoore: got a quick question! - When obtaining current the pd measured across the resistor sometimes is greater than 5v and as a result would fry the arduino pin - however, when trying to step that voltage down to something more manageable, it changes the current value due to greater load :S - any ideas how to solve problem?
[17:11] <edmoore> 5v is a very large pd
[17:11] <edmoore> what value resistor?
[17:11] <cuddykid> 150ohm
[17:11] <edmoore> lol!
[17:11] <edmoore> that's enormous!
[17:11] <cuddykid> as according to data sheet max power is obtained around 150!
[17:12] <edmoore> you want something like 0.1ohm
[17:12] <edmoore> hmm, i think you've misunderstood the datasheet
[17:12] <edmoore> is this the solar cell datasheet?
[17:12] <cuddykid> yeah, I'll get you link
[17:12] <edmoore> no need
[17:12] <edmoore> so, what that is laying is that the solar cell works best with a *load* of about 150ohm
[17:13] <edmoore> the current sense resistor is not the load
[17:13] <cuddykid> yeah
[17:13] <edmoore> it's meant to be very non-intrusive
[17:13] <cuddykid> oh right :S
[17:13] <cuddykid> here goes my noobyness again lol
[17:13] <daveake> :)
[17:13] <edmoore> just a very low resistance in series just to give you some detectable pd, but not actually enought to affect the performance of the circuit
[17:14] <cuddykid> oh ok, cool, what is the "load" then?
[17:14] <edmoore> the thing that the solar cell is powering
[17:14] <edmoore> the actual power sucking device
[17:14] <cuddykid> ohh
[17:14] <edmoore> so the flight computer, or whatever
[17:15] <cuddykid> got you, hmm, still boggles my mind why the power would vary depending on load
[17:15] <edmoore> well, things *take* power
[17:15] <edmoore> rather than the solar cell "giving" power
[17:15] <cuddykid> yup
[17:16] <edmoore> so the power depends on the load
[17:16] <edmoore> however, if you feel brave, http://en.wikipedia.org/wiki/Th%C3%A9venin's_theorem
[17:16] <cuddykid> right.. I'm getting you! It's slowly coming to me! haha
[17:16] <cuddykid> thanks :)
[17:16] <daveake> I remember at college a friend asking "Your meter has a 10A range, right? Can I borrow it?". I asked what he wanted that for. He replied "I want to test my car battery". Needless to say I didn't let him borrow it!
[17:16] <edmoore> max power when R_load = R_th
[17:17] <edmoore> so basically the solar cell with have a resistance of about 150 ohm
[17:18] <cuddykid> get you :)
[17:18] <cuddykid> * I get you!
[17:18] <edmoore> thevenin's theorem is v useful for analyzing circuits
[17:18] <daveake> cuddykid every voltage source has an internal resistance. For solar cells it's rather high. For car batteries it's very low!
[17:18] <edmoore> it's one of the first things you do in 1st electronics
[17:18] <edmoore> 1st year*
[17:19] <edmoore> don't worry about noobiness - you don't learn stuff until you learn it, right? :)
[17:19] <cuddykid> haha, thanks for all your help btw :)
[17:20] <edmoore> np
[17:20] <cuddykid> when I do get the small resistor and measure current (then calculate power) - that won't be peak power right?
[17:21] <daveake> Yes, it will. The small resistor will make almost no difference to the power.
[17:23] <cuddykid> but I thought peak power was when load R was 150, not effectively 0 ?!
[17:23] <daveake> The idea is to use 2 series resistors, total resistance 150 ohms.
[17:24] <daveake> So the power is the max you can get
[17:24] <daveake> You can't measure >5V at the Arduino, so you're using a potential drivider to cut that down.
[17:25] <edmoore> Randomskk: ping
[17:25] <daveake> Even a pair of 75 ohm resistors in series will do that for you.
[17:25] <daveake> Is this for your power measuring test, so you're not "using" the power from the cell, you're just dumping it in a resistor and measuring it?
[17:25] <cuddykid> yeah :)
[17:25] <edmoore> sensible idea. as daveake says, use two
[17:25] <cuddykid> I basically wanted to log power outputted and see how much it varied with increase in alt
[17:25] <edmoore> 0.1 ansd 150
[17:26] <cuddykid> then the 150ohm will act as load?
[17:26] <edmoore> that can be a nice payload heater
[17:26] <edmoore> yes
[17:26] <daveake> :)
[17:26] <edmoore> max power = max heat generation
[17:26] <cuddykid> great, thanks :)
[17:26] <cuddykid> I will try and report back!
[17:26] <edmoore> this is a v good idea for a high alt experiment btw cuddykid
[17:26] <cuddykid> though sun has gone in :(
[17:27] <edmoore> or if you don't want to amplify the pd across the sense resistor then do as daveake says - perhaps 10 ohm for sense and 140 for load
[17:27] <daveake> Then (1) you want 150 ohms total, and (2) you want the voltage across one of them to be something less than 5V, and (3) you don't want it too low to measure!
[17:27] <cuddykid> edmoore: yeah, wanted to give some data back to solarbotics as they were interested in how they will perform!
[17:28] <daveake> Check what the Arduino uses as a voltage reference. IIRC you can choose that.
[17:28] <cuddykid> got you, thanks edmoore daveake :)
[17:28] <daveake> http://www.arduino.cc/en/Reference/AnalogReference
[17:29] <daveake> Default is 5V. If you use that, make sure the battery to the Arduino doesn't drop voltage low enough for the 5V rail to drop. If it does, then your code will think the sensed voltage is higher than it is!
[17:30] <cuddykid> should be good as 6aa's are churning out around 9v for majority of flight
[17:31] <daveake> Cool
[17:32] <daveake> I used a Lithium PP3 for mine, but I had a separate supply for the GPS
[17:34] <cuddykid> hmm, 120ohm and 33ohm in series should work ok? Then measure pd across 33
[17:35] <daveake> Yep, you're getting the idea now :)
[17:35] <daveake> That'll give you 1.294V @ 6V from the solar cell.
[17:36] <Laurenceb_> http://www.beaglepilot.com/
[17:36] <Laurenceb_> ^interesting
[17:36] <cuddykid> :D
[17:36] <cuddykid> daveake: effectively at pot divider
[17:37] <daveake> Yep. It's a load and a pot divider.
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[17:46] <edmoore> Randomskk: github for mac seems quite nice
[17:50] <Randomskk> yea
[17:50] <Randomskk> sorry, you pinged earlier?
[17:52] <Randomskk> for all it looks very pretty I have to admit I haven't really used it in anger, mostly a) I develop on my linux box but b) I already use/like the command line
[17:52] <Randomskk> hmm I really need to re-configure irssi to play nicely with solarized, its nick colours are rubbish
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[17:55] <edmoore> Randomskk: the visual diffage is the nice bit
[17:55] <edmoore> + pretty history
[17:55] <Randomskk> ooh I guess, I always just went on github.com for most of that... might try the visual diff
[17:55] <Randomskk> there's a really neat linux tool for that actually
[17:55] <Randomskk> meld or something
[17:56] <edmoore> earlier ping dw
[17:57] <cuddykid> hmm, can't get my head around this - measuring the pd across the 2 resistors (in series) gives something like 0.04v at the moment, surely though pd across potential divider should be the same as the V in - but then I know the V will drop as it's across resistors :S - ahh!
[17:59] <edmoore> trust in the maths
[17:59] <edmoore> V = IR
[17:59] <edmoore> P = IV
[17:59] <edmoore> world = conquered
[17:59] <cuddykid> haha
[17:59] <cuddykid> hmm, my analogue read is refusing to give a value
[18:00] <cuddykid> however, pd across 33ohm resistor is currently 8mV
[18:00] <cuddykid> :S
[18:01] <daveake> Turn the lights on :)
[18:02] <cuddykid> lights are on! lol
[18:02] <daveake> Measure everything.
[18:03] <cuddykid> pd across the 153ohms in total is only 0.03V
[18:03] <cuddykid> 38mV
[18:03] <Darkside> http://www.youtube.com/watch?v=v2Aoz-8RDNc
[18:04] <daveake> circuit should be solar cell V+ --> 120 ohms --> 33 ohms --> solar cell V-
[18:04] <edmoore> aussies and welsh
[18:04] <edmoore> it's like an england invasion force
[18:05] <cuddykid> daveake: yup
[18:05] <cuddykid> Darkside: brilliant!
[18:05] <Darkside> lol
[18:05] <Darkside> launch video is still uploading
[18:06] <NigeyS> hey Darkside you made it home :D
[18:06] <edmoore> i like the cows video
[18:06] <Darkside> Eeyu[p
[18:06] <Darkside> lol
[18:07] <cuddykid> http://www.youtube.com/user/darksidelemm#p/u/11/AAWPL596HOc - LOL
[18:07] <edmoore> i think it was probably the highpoint of human/animal understanding
[18:08] <Darkside> wut?
[18:08] <edmoore> nvm
[18:08] <cuddykid> Darkside: that's toilet door is awesome!
[18:08] <Darkside> yep
[18:08] <Darkside> those toilets are AWESOME
[18:08] <cuddykid> haha
[18:09] <Darkside> i always wonder what happens if the power gets cut tho
[18:09] <cuddykid> lol
[18:10] <NigeyS> Darkside, did you save your fldigi log ?
[18:10] <Darkside> nope
[18:10] <Darkside> get it from robertharrison's website
[18:10] <Darkside> or whatever that link is
[18:10] <NigeyS> dam, i saved mine with last reading of 1900m
[18:11] <cuddykid> right, moved solar cell outside - now getting reading of about 0.05v max! daveake
[18:12] <cuddykid> obviously it was too dark inside!
[18:12] <cuddykid> however - power is lower than 1mW
[18:14] <edmoore> erm
[18:14] <edmoore> from this:
[18:14] <edmoore> V+ --> 120 ohms --> 33 ohms --> solar cell V-
[18:14] <edmoore> where are the multmeter probs?
[18:15] <edmoore> multimeter probes*
[18:16] <cuddykid> not sure if its a prob, just a very low value! - getting 0.05v pd across 33 ohm
[18:16] <cuddykid> outside
[18:16] <edmoore> is it def varying sensible if you put your hand over the cell?
[18:16] <edmoore> sensibly*
[18:16] <cuddykid> yep
[18:17] <cuddykid> across the 2 resistors (153 ohm) is 0.3v
[18:17] <edmoore> hmm.
[18:17] <edmoore> unfortunately i need to start getting ready for going out this evening
[18:18] <cuddykid> no problem - you've been a tremendous help! - Maybe when the sun comes out (another day) readings will perk up!
[18:18] <cuddykid> have a good night
[18:19] <daveake> Assuming it's wired right (and it can't get much simpler than this!) and you're measuring right (sounds like it) then it's not enough light, or a dodgy or very small solar cell
[18:19] <Darkside> http://www.youtube.com/watch?v=gI3AU5nL34U <-- still processing
[18:19] <Darkside> wait a bit for the 1080p version
[18:19] <NigeyS> yey!
[18:19] <cuddykid> daveake: I reckon it's the light, it is a small cell
[18:19] <Darkside> onlt 240p available atm
[18:19] <NigeyS> Darkside, thanks for today!
[18:20] <cuddykid> will put it under a lamp inside..
[18:20] <SpeedEvil> Right under.
[18:20] <daveake> Light is a big factor.
[18:20] <SpeedEvil> IIRC butted up against a 20W CFL will get about half sun
[18:20] <SpeedEvil> Actually touching the tube
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[18:21] <daveake> Your eyes adjust a lot, compensating for how dim indoor lights are compared to the midday su
[18:21] <daveake> sun
[18:21] <SpeedEvil> Sun is 130000lm/m^2
[18:21] <SpeedEvil> A typical 22W CFL will be 1200lm or so
[18:22] <cuddykid> that's slightly better - under the lamp getting about 0.85v :)
[18:22] <daveake> Now do the maths on how much more power is available from the yellow outdoor everlasting lightbulb :)
[18:23] <cuddykid> haha
[18:23] <SpeedEvil> I'm currently being mildly annoyed and wanting a solar simulator for at least 20*20cm
[18:24] <cuddykid> also - why are my float values only quoting to 2 dp?
[18:25] <SpeedEvil> printf formats?
[18:25] <daveake> This is Arduino / C / sprintf? If so what format string?
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[18:27] <SpeedEvil> printf("%6f",f)
[18:27] <SpeedEvil> Or similar
[18:28] <NigeyS> daveake, the launch video is up :D
[18:28] <daveake> linky?
[18:29] <NigeyS> hey Darkside maybe the birds followed it and buggered up the gps lol
[18:29] <NigeyS> http://www.youtube.com/watch?v=gI3AU5nL34U
[18:29] <Darkside> hehe
[18:29] <daveake> Or the metal in the balloons got in the way of the signal?
[18:29] <daveake> (GPS that is)
[18:29] <Darkside> nah, the problem wasnt with loosing lock
[18:29] <Darkside> the problem was with the AVR
[18:30] <cuddykid> daveake: arduino
[18:30] <cuddykid> just reading floating an int
[18:30] <daveake> Darkside yeah, I'm sure.
[18:30] <NigeyS> ive checked through the code, nothing jumps out at me
[18:30] <Darkside> yeah i reckon it was a hardware fault
[18:30] <daveake> cuddykid - reading floating an int? Can I have that in English? ;-)
[18:31] <daveake> Darkside / NigeyS sounds h/w to me too
[18:31] <NigeyS> i think so, will give ats-1 a much more thorough test i think as its pretty much the same hardware
[18:31] <daveake> Your freezer is your friend :)
[18:31] <cuddykid> daveake: sorry, now that apple have added autocorrect to lion I think it's going to be happening quite a bit!
[18:31] <Darkside> well, we'll have 2 payloads as backup
[18:31] <NigeyS> yups
[18:31] <NigeyS> daveake, good plan ;)
[18:32] <daveake> Disable the temp control to get it colder :)
[18:32] <Darkside> freezer isnt cold enough
[18:32] <NigeyS> we need 1 of those ISS freezers, they are what .. -90 ?
[18:32] <Darkside> hehe
[18:33] <Darkside> you'd want to test at -40 if you can
[18:33] <Darkside> but thats hard
[18:33] <NigeyS> i think the best i can do is -22
[18:34] <NigeyS> thats at a shop where i know the nanager and hes offered to put it in their storage freezer for a few hours
[18:34] <Darkside> hehe
[18:34] <Darkside> or find a source of dry ice
[18:34] <NigeyS> ahh
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[18:34] <NigeyS> would BOC sell that ?
[18:35] <Darkside> dunno
[18:35] <Elwell> labs may have -80 freezers
[18:35] <Elwell> (we used to at uni)
[18:35] <NigeyS> hmm could ask cardiff uni
[18:36] <Elwell> biochem labs
[18:36] <Elwell> they are also useful for small qty of dry ice / liqid N too :-)
[18:37] <NigeyS> true
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[18:40] <SpeedEvil> My hotpoint freezer will go to -4?C
[18:40] <Darkside> -40? :O
[18:40] <daveake> That's pathetic ;-) ... -18C or so is usual
[18:41] <Darkside> oh
[18:41] <Darkside> that was a degree sign
[18:41] <daveake> :)
[18:41] <SpeedEvil> Darkside: My tehrmometer only goes to -40 - it takes it overrange
[18:41] <SpeedEvil> It takes 30h or so to hit -18C
[18:42] <SpeedEvil> It was acting like it seemed like there was going to be a powercut, so I pressed the boost button.
[18:42] <Darkside> what did it do?
[18:43] <SpeedEvil> When I next checked it a day or so later it was below -40C
[18:43] <SpeedEvil> boost just bypasses the thermostat
[18:43] <Darkside> lol
[18:44] <daveake> indeed :)
[18:44] <daveake> We have a second, small freezer with boost button. Just need to find somewhere for the food first :)
[18:44] <Darkside> lol
[18:44] <Darkside> the food could handle -40
[18:44] <Darkside> easily
[18:45] <daveake> I mean to make space!
[18:57] <Darkside> oh man
[18:58] <Darkside> just watch ep 5 of torchwood
[19:04] <Darkside> watched*
[19:12] <DanielRichman> ... even australia gets TW 5 days before we do?
[19:13] <DanielRichman> what is this.
[19:13] <Darkside> DanielRichman: i just torrented it
[19:13] <NigeyS> lol
[19:13] <Darkside> and i'm in the UK atm
[19:14] <DanielRichman> oh, good plan
[19:16] <Darkside> hmm i think i might need to go to bed early tnight
[19:16] <Darkside> very very tired atm
[19:19] <Darkside> and tmorrow i need to stock up on my caffeine supply
[19:21] <NigeyS> its that welsh country air! makes ya tired
[19:22] <Darkside> eeyup
[19:22] <NigeyS> i have most of the data now, will tidy it up and do some pretty graphs
[19:22] <Darkside> http://ganton3.deviantart.com/art/INSTANT-MACINTOSH-Flash-210776562
[19:23] <NigeyS> heh nice!
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[19:30] <daveake> NigeyS pic of my Yagi temporarily strapped to a tripod to track your balloon - http://www.flickr.com/photos/daveake/6015551182/
[19:32] <daveake> It was vertically polarised almost all the time, but I tried horizontally at the end and it seemed better then.
[19:32] <fsphil-laptop> good picture
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[19:41] <Darkside> lol cool
[19:44] <NigeyS> blimey, nice set up daveake !
[19:44] <daveake> Yagi + tripod + Velcro straps!
[19:45] <fsphil-laptop> velcro, cunning
[19:46] <daveake> Needed 3 straps to stop it drooping!
[19:46] <Zuph> Congrats on the flight, NigeyS
[19:46] <Zuph> Feel good? :-p
[19:46] <fsphil-laptop> yay your first launch :)
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[19:47] <NigeyS> hehe hey Zuph feels verrrrrrrry good :D
[19:49] <Zuph> :)
[19:49] <daveake> Did you put a label on the payload with contact details?
[19:49] <Darkside> no, he didn't
[19:49] <Darkside> lol
[19:49] <NigeyS> nooo
[19:49] <Zuph> !
[19:49] <Darkside> Zuph: itwas flying right through flight paths
[19:49] <Darkside> right at the worst possible altitude
[19:49] <Zuph> hah
[19:49] <NigeyS> and slightly larger than it shuldve been so .. meh
[19:50] <daveake> It's probably floating on the Severn by now :)
[19:50] <fsphil-laptop> we won't tell anyone
[19:50] <Darkside> hha
[19:50] <NigeyS> daveake, wouldnt surprise me at all
[19:50] <Darkside> i'm sure he'll put a label on the launch from cambridge
[19:50] <Darkside> in fact, he'd better :P
[19:50] <fsphil-laptop> looking forward to that
[19:50] <fsphil-laptop> when's the launch date for that?
[19:50] <Darkside> thats gonna have a mininut board strapped to the outside, and i want that back!
[19:51] <NigeyS> dam right "SEND ME BACK TO MY OWNER OR ILL CHIN YOU"
[19:51] <fsphil-laptop> "My Explode"
[19:51] <NigeyS> lols
[19:51] <fsphil-laptop> May*
[19:51] <daveake> I had labels everywhere ...
[19:51] <daveake> ... "Smile, you're on camera"
[19:51] <NigeyS> lmao
[19:51] <fsphil-laptop> ooh forgot to order the florscent tape
[19:51] <fsphil-laptop> florescent
[19:51] <fsphil-laptop> bah, keyboards
[19:52] <NigeyS> heh
[19:52] <daveake> I use the3M hi-viz stuff
[19:52] <Darkside> oh yeah NigeyS thats what we should do
[19:53] <Darkside> stick a small video camera on there
[19:53] <fsphil-laptop> is it properly reflective daveake?
[19:53] <Darkside> just a little teeny one
[19:53] <Darkside> or a digital camera you don't ind killing :P
[19:53] <daveake> I've been playing with a keyfob "spy" camera
[19:53] <daveake> Quality isn't great!
[19:53] <Darkside> daveake: i have one of those
[19:53] <Darkside> its shithouse
[19:53] <daveake> Yep
[19:53] <Darkside> and uses a FUCKTON of space when recording video
[19:53] <Darkside> gopro HD hero or nothing
[19:54] <mattltm> Anyone know much about Arduino and SPI commands?
[19:54] <daveake> I have a Kodak Zx1 and that's pretty good
[19:54] <daveake> mattlm yes ....
[19:54] <NigeyS> oo i might have a keychain cam thingy here, ill have a look
[19:54] <Darkside> mattltm: oh god, yes
[19:54] <Darkside> far too much
[19:54] <NigeyS> lol
[19:54] <mattltm> Great!
[19:54] <Darkside> i re-implemented the SPI libraries recently
[19:55] <mattltm> Im using a RTC module
[19:55] <mattltm> and I need to set an alarm on it
[19:55] <Darkside> SPI boils down to one function: byte transfer(byte data)
[19:55] <Darkside> you send a byte, you get a byte back
[19:55] <Darkside> the rest of it is up to the device on the other end
[19:55] <Darkside> >_>
[19:55] <mattltm> So I can send the arduino to sleep and wake it up with an interupt
[19:55] <Darkside> ooh
[19:55] <Darkside> nfi about that :P
[19:55] <Darkside> look at the datasheet
[19:55] <mattltm> http://www.sparkfun.com/products/10160
[19:56] <mattltm> Thats what im using :)
[19:56] <mattltm> Datasheet makes FA sense to me!
[19:56] <Darkside> NigeyS: if i get a GoPro HD hero can i strap it to the box?
[19:56] <Darkside> >_>
[19:57] <Darkside> condition: i get it back
[19:58] <NigeyS> sure u can
[19:58] <Darkside> i've been vaguely considering buying a HD hero for a while now
[19:58] <Darkside> jeez they aren't cheap
[19:59] <fsphil-laptop> nope
[19:59] <fsphil-laptop> was going to get one for next launch
[20:00] <Darkside> 250 pounds!
[20:00] <NigeyS> theyre seriously expensive lol
[20:00] <fsphil-laptop> If I thought there was 99% chance of getting it back, I'd do it
[20:00] <fsphil-laptop> but I know better :)
[20:00] <Darkside> heh
[20:00] <Darkside> true - in the UK especially
[20:00] <Darkside> ok, sorting out accomodation in london
[20:00] <fsphil-laptop> or I can try getting sponsorship
[20:01] <Darkside> fsphil-laptop: thats what we did >_>
[20:02] <fsphil-laptop> will need to ask about
[20:02] <mattltm> Darkside: You comming to London?
[20:03] <Darkside> yes
[20:03] <Darkside> next weekend
[20:03] <Darkside> gonna train in friday morning and out sunday night
[20:03] <mattltm> very cool. Meeting people?
[20:04] <NigeyS> wow hey Darkside have u seen the temp of the payload where it was on the car roof ?
[20:04] <Darkside> going to the hackerspace at least
[20:04] <Darkside> and museums
[20:04] <Darkside> NigeyS: nope?
[20:04] <NigeyS> 39c !!
[20:04] <Darkside> lol is that all
[20:04] <Darkside> >_>
[20:04] <Darkside> remember my one that melted?
[20:04] <Darkside> that got up to about 60 degrees
[20:04] <NigeyS> bloody hell lol
[20:05] <NigeyS> DARKSIDE : PICOCHU-1,141,12:44:23,51.52861,-3.39523,41,9,39*240B
[20:06] <Darkside> ok thinking of staying here: http://www.londonuniversityrooms.co.uk/popups/vendor.aspx?id=marylebonelondon
[20:12] <NigeyS> looks decent enough
[20:13] <number10> this would be nice place to stay Darkside http://www.theritzlondon.com/
[20:13] <Darkside> yes i'm sure
[20:13] <Darkside> i'm not paying 200 pounds a night though
[20:13] <Darkside> or more
[20:13] <number10> splash out
[20:14] <Darkside> it'd be fine if i could payin cash
[20:14] <Darkside> but i can't book in cash lol
[20:15] <rjharrison> anyone have a media server?
[20:15] <Darkside> define: media server
[20:15] <rjharrison> wild media server
[20:15] <Darkside> >_>
[20:15] <Darkside> nope
[20:16] <rjharrison> tversity
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[20:16] <rjharrison> that sort of stuff
[20:22] <Darkside> accomodatio booked
[20:38] <NigeyS> nicey
[20:38] <NigeyS> oh Darkside any of the pics up, or just the videos ?
[20:39] <number10> where are the pic NigeyS
[20:41] <NigeyS> not up yet, have you seen the videos ?
[20:42] <Darkside> NigeyS: ust videos atm
[20:42] <Darkside> havent sorted out the pics yet
[20:42] <Darkside> i'm booking stuff for my trip to london
[20:42] <NigeyS> oki nps
[20:42] <Darkside> it looks like i'll be in the hackerspace most of the time :P
[20:42] <NigeyS> number10, http://www.youtube.com/watch?v=gI3AU5nL34U
[20:43] <NigeyS> and http://www.youtube.com/watch?v=v2Aoz-8RDNc
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[20:49] <number10> NigeyS: nice! looks like you had a great day
[20:49] <NigeyS> it was!
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[20:53] <number10> what are your plans for PicoChu-2 NigeyS ?
[20:55] <NigeyS> not sure yet, need to go over the data from today first
[20:58] <number10> are you going to put the data online?
[20:59] <NigeyS> yup, just tidying up some of the bad telem strings where we have some good data
[21:01] <number10> cool
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[21:02] <Darkside> woot, train and accomodation booked
[21:02] <Darkside> going to london!
[21:04] <NigeyS> yey!
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[21:10] <edmoore> yo
[21:10] <number10> hi
[21:13] <fsphil> anyone know a good online supplier of the florescent gaffer tape? (other than gaffer themselves, who slap on +£10 to post here)
[21:17] <Upu> postage is expensive
[21:17] <Upu> shame really
[21:18] <fsphil> yea, £15 for £10 worth of tape
[21:19] <fsphil> I may have a cunning plan
[21:19] <Upu> NigeyS are you the person in the red and white ?
[21:19] <NigeyS> yups
[21:20] <Upu> I guessed you weren't the one behind the camera :)
[21:20] <Upu> fsphil order some and get it deliver to one of us and then pick it up in October
[21:21] <fsphil> I might be able to get it sooner, mate is heading over to doncaster next week
[21:22] <Upu> oh ok
[21:22] <fsphil> maybe, will have to ask him
[21:22] <Upu> decided to join the fluoresant massive ?
[21:22] <fsphil> oh yes
[21:22] <Darkside> lol
[21:22] <fsphil> I really couldn't see my last one in the trees
[21:23] <fsphil> but spotted the yellow/red parachute instantly
[21:23] <Upu> ah a convert
[21:23] <edmoore> i've seen payloads from 600m
[21:23] <edmoore> just cos they were orange
[21:23] <edmoore> any other colour and they'd still be lost there 5 years later
[21:24] <fsphil> what about yellow?
[21:24] <Upu> If truth be told my payload was going to be fluoresant before I made that silly bet
[21:24] <Upu> you have a PM fsphil
[21:24] <edmoore> yellow fine too
[21:24] <edmoore> just day-glo whatever
[21:24] <edmoore> i saw jgrahamc's one through a tree line from about 300m too
[21:24] <edmoore> that was dayglo green
[21:25] <fsphil> I'll get a mix of colours
[21:25] <Elwell> and you use dayglo parachutes?
[21:25] <Upu> corn fields are yellow
[21:25] <Upu> nature is green and yellow
[21:26] <edmoore> yup but not dayglo
[21:26] <edmoore> Elwell: yes, i use bright orange parachutes
[21:26] <Upu> true
[21:29] <fsphil> mostly green here
[21:36] <number10> you payload looks pink Upu
[21:36] <number10> your
[21:36] <Upu> doesn't look it, it IS pink :)
[21:36] <number10> nice one
[21:36] <fsphil> eye-burningly pink
[21:37] <number10> what the tape?
[21:37] <Upu> got a pair of matching parachutes
[21:37] <Upu> http://www.gaffatape.com/Fluorescent-Gaffer-Cloth-Tape-1/Default.aspx
[21:37] <number10> ta
[21:38] <Elwell> flip. thats a lorra lorra thunder
[21:38] <number10> i was wondering.. maybe alternate pink and yellow would be good
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[21:39] Action: fsphil wanna be there where the thunder is
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[21:40] <Elwell> fsphil: looks like a diagonal line from barcelona to strasburg
[21:41] <Elwell> when I finally get the flat and house finished, I'll get an eumetcast dongle and grab the sat stream
[21:42] <fsphil> watching it on the lightning map
[21:42] <LazyLeopard> Lightning map?
[21:42] <fsphil> http://www.blitzortung.org/Webpages/index.php?lang=en
[21:42] <Elwell> LazyLeopard: http://www.blitzortung.org/Webpages/index.php?lang=en&page=1
[21:43] <Elwell> the green spot near geneva is me :-)
[21:44] <fsphil> oh that's a better map
[21:45] <fsphil> ooh very few detectors in france
[21:45] <Elwell> yeah but the basic one's useful too
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[21:45] <fsphil> wonder if I can setup a station here - there's none this far north west
[21:46] <Elwell> fsphil: yeah, can't decide if I should move mine to clermont-ferrand (spot in the middle)
[21:46] <fsphil> you have one setup there?
[21:46] <Elwell> I have one in gva, but we also have a house in clermont
[21:47] <Elwell> (buying 2 would be considered extravagant)
[21:47] <Elwell> mind you its a simple pcb...
[21:48] <fsphil> looks simple yea
[21:48] <Elwell> took me 2 evenings to knock up (did one a night) -- and that was while watching TC
[21:48] <Elwell> TV
[21:52] <fsphil> you had no problem getting the parts?
[21:55] <Elwell> just ordered the kit - including em406a gps & 2 ferrites
[21:55] <Elwell> ~70-100 eur?
[21:56] <fsphil> ah, the pdf says they only send the pcb and avr chip
[21:56] <fsphil> will email them and see what they'll do
[21:57] <Elwell> ah - he may have a;ltered
[21:57] Action: fsphil prays he does not alter it further
[21:58] <Elwell> looks like there are 2 component lists now (NEWpcb has ability to reflash avr)
[21:59] <Elwell> http://www.blitzortung.org/Documents/Bestellliste_PCB5.7_PCB6.6.pdf http://www.blitzortung.org/Documents/Bestellliste_PCB5.7_PCB6.7.pdf
[22:05] <fsphil> odd, the new one seems to need a sparkfun breakout for usb <> serial
[22:07] <Elwell> yeah but the old one in my case is using my keyspan serial-usb thingy
[22:08] <Elwell> suspect a pl2303 is prob good enough as it spits out nmea type ascii
[22:08] <fsphil> I've plenty of adaptors here yea, will get the V6 one
[22:09] <fsphil> 6.6
[22:11] <Elwell> check in http://www.wetter-board.de/index.php?page=Board&boardID=290 too - german but he hangs out in theere (cirnam)
[22:11] <Elwell> http://www.wetter-board.de/index.php?page=Thread&threadID=49162
[22:12] <fsphil> ooh the 6.6 one doesn't have the isp header
[22:13] <fsphil> that could be useful to have
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[22:14] <Elwell> yeah cos id like to update mine but don't know how (have arduino, so should be possible0
[22:16] <griffonbot> Received email: Nigel Smart "[UKHAS] Re: Launch Notification - Saturday 6th August : PICOCHU-1"
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[22:32] <NigeyS> hey steve
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[22:37] <nickolai> hello all
[22:38] <Upu> hi there nickolai
[22:38] <nickolai> hey upu
[22:38] <nickolai> how's it going?
[22:38] <Upu> no bad just considering going to bed :)
[22:39] <nickolai> did you ever launch your balloon at that festival like you were planning to?
[22:39] <Upu> nah weather beat us
[22:39] <nickolai> shame, at least you were ready to do
[22:39] <Upu> it was going too far South and heading into Manchester airport approach
[22:40] <NigeyS> Upu, we had torrential rain today! lol
[22:40] <nickolai> i had to scrub an attempt today because of problems with the flight computer :(
[22:40] <Upu> yeah I know I was going to have a BBQ today
[22:40] <NigeyS> so we jumped in the car and moved to my sisters front drive
[22:40] <nickolai> hm, raining here in New Jersey as well
[22:40] <Upu> could be worse the Cambridge launch accidentally lost their balloon
[22:40] <fsphil> actually really nice here tonight :)
[22:41] <NigeyS> i heard about that :/
[22:41] <NigeyS> fsphil, it's not, it's your imagination :p
[22:41] <fsphil> aah I was wondering what that unicorn and pony where doing there
[22:43] <nickolai> accidentally?
[22:44] <nickolai> did a flying unicorn pop the balloon unexpectedly?
[22:44] <fsphil> hate it when that happens
[22:47] <NigeyS> bed time for me, nn all :)
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[00:00] --- Sun Aug 7 2011