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[00:12] <nickolai> does anyone have any advice on filling with hydrogen?
[00:13] <NigeyS> dont smoke at the same time :)
[00:14] <nickolai> why not?
[00:14] <nickolai> :P
[00:14] <NigeyS> boom :p
[00:14] <nickolai> i had an interesting conversation today with someone at work - they were saying that latex balloons will leak hydrogen!
[00:15] <nickolai> i imagine hwoyee are made of latex?
[00:19] <NigeyS> yups
[00:19] <NigeyS> even the cylinders he and h2 come in leak, if you left a he cylinder for couple of years itd eventually all leak out
[00:19] <SpeedEvil> nickolai: They wont'.
[00:20] <SpeedEvil> nickolai: He leaks lots more than H
[00:20] <nickolai> i'm thinking tho, that's a huge safety concern for filling with hydrogen - one we hadn't fully considered when we used it yesterday
[00:21] <SpeedEvil> It's not.
[00:22] <SpeedEvil> The flammable volume in air is something like 4%
[00:22] <nickolai> it wouldn't propogate through the leak to the hydrogen inside the ballon?
[00:22] <SpeedEvil> If you have a couple of cubic meters of hydrogen, and a tenth of it leaks out, that's a bathroom-sized volume.
[00:22] <SpeedEvil> That's at risk.
[00:22] <SpeedEvil> If it's completely sealed.
[00:23] <nickolai> your last 2 statements are a bit confusing to me - to which statements are you referring?
[00:25] <SpeedEvil> If htere are a couple of cubic meters of hydrogen, then even if a tenth of it leaks out (it'll take a day or two to do this), then in a completely sealed bathroom, it may reach the lower limit of flammability
[00:25] <nickolai> i see
[00:26] <nickolai> not to doubt you, but do you have a source for that? i'm sure my colleague would like to see some more details
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[00:26] <SpeedEvil> http://en.wikipedia.org/wiki/Flammability_limit
[00:27] <NigeyS> omg eagle hates me lols 63 errors :|
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[00:32] <Dan-K2VOL> anyone around?
[00:33] <natrium42> nope
[00:33] <natrium42> everybody left
[00:33] <natrium42> :D
[00:33] <NigeyS> im kinda here
[00:33] <nickolai> hey Dan
[00:34] <NigeyS> if eagle doesnt drive me to insanity in the next few minutes
[00:34] <nickolai> thanks SpeedEvil, but what about the leakage rate of balloons? any idea where i might find info on that?
[00:35] <SpeedEvil> http://mositesrubber.com/technical/silicone-rubber.htm
[00:35] <SpeedEvil> Has some sort-of-related numbers, but they are clearly bogus.
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[00:44] <nickolai> hm, interesting stuff. I guess my initial concerns were excessive
[00:44] <nickolai> then again, you can never be too cautious when dealing with this stuff
[00:45] <nickolai> when it came up earlier at work it was while the boss was showing safety videos about various things like pyrophoric substances etc.
[00:48] <Zuph> NigeyS: What eagle-ails you this evening? :-p
[00:49] <SpeedEvil> The permeability is a red-herring.
[00:49] <SpeedEvil> If it's a safety issue at all, you're doing it wrong.
[00:49] <NigeyS> trying to put what ive got so far onto a brd, it just isnt making much sense heh
[00:49] <SpeedEvil> As your filling environment should be able to cope with a burst.
[00:49] <NigeyS> lots of lines all over the place etc
[00:50] <Zuph> hehe
[00:50] <Zuph> No fixin' that.
[00:50] <NigeyS> nup, maybe some sleep will help
[00:53] <Zuph> aye
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[01:00] <SpeedEvil> http://www.parker.com/literature/ORD%205700%20Parker_O-Ring_Handbook.pdf - page 74 gives for helium and natural rubber as 3*10^-7 cc per cm^2 per sec at 1 bar differential.
[01:01] <SpeedEvil> But annoyingly, does not list a figure for hydrogen.
[01:01] <SpeedEvil> IT's of the same order of magnitude anyway./
[01:01] <SpeedEvil> It would be less - if you could use monatomic hydrogen
[01:01] <SpeedEvil> But the molecule diffueses slower than He
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[01:11] <Zuph> SpeedEvil: Guys at the welding store would think I was a bit batty if I tried to order monatomic hydrogen.
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[01:48] <Dan-K2VOL> balloons are awesome
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[03:04] <kristianpaul> sure they are :)
[03:09] <SpeedEvil> If you could get stable monatomic hydrogen, it'd be awesome as rocket fuel.
[03:09] <SpeedEvil> Interestingly, it is possible to get a metastable state in liquid hydrogen that makes it not burn as energetically.
[03:26] <Dan-K2VOL1> hm
[03:26] <Dan-K2VOL1> interesting
[03:42] <SpeedEvil> Or rather - won't adequately regeneratively cool rocket engines.
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[07:25] <griffonbot> @AnthonyStirk: Write up of the weekends extremely long range tracking shenanigans http://t.co/0rFOjrC4 #ukhas #apexhab [http://twitter.com/AnthonyStirk/status/128733811121987584]
[07:25] <jonsowman> nice Upu :)
[07:25] <UpuWork> morning jonsowman
[07:25] <jonsowman> morning
[07:26] <jonsowman> just reading your writeup
[07:26] <UpuWork> felt it should be written up as it was quite interesting
[07:26] <UpuWork> still amazing OTZ1SKY came across the transmission by accident
[07:28] <jonsowman> haha yes it really was
[07:28] <jonsowman> excellent writeup :)
[07:28] <UpuWork> I repeat too many words :)
[07:28] <costyn> UpuWork: Otzi... wasn't that the frozen caveman they dug up a few years ago?
[07:28] <UpuWork> yeah lol
[07:29] <UpuWork> he's good with radios these days
[07:29] <costyn> UpuWork: and yes, nice writeup
[07:29] <UpuWork> thx
[07:29] <jonsowman> "Home of the worlds best all pink payload"
[07:29] <jonsowman> lol
[07:29] <UpuWork> OZ1SKY even
[07:32] <costyn> UpuWork: yea i think you wrote it 2 different ways in your article when I read it yesterday ;)
[07:33] <UpuWork> fixed!
[07:33] <costyn> :)
[07:33] <costyn> UpuWork: I'
[07:34] <costyn> UpuWork: I'm buying a radio from a friend btw... 817
[07:34] <UpuWork> I' ?
[07:34] Action: costyn is happy :)
[07:34] <UpuWork> good radio
[07:34] <UpuWork> how much are you paying for it ?
[07:34] <costyn> hit the enter button too early
[07:34] <UpuWork> ah
[07:34] <costyn> UpuWork: 275 euro
[07:34] <UpuWork> that sounds very reasonable
[07:35] <UpuWork> its a great radio
[07:35] <costyn> yea it comes with a bunch of accesories as well, 2m whip, 70cm whip, carrying case and some other stuff I can't remember right now
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[07:36] <costyn> Tim is launching Space Cam Live II on the 7th ; I'm gonna help him out, should be educational for me. and fun :)
[07:37] <UpuWork> best thing you can do is get out there and attend a launch
[07:37] <UpuWork> I learnt alot watching Rob and Steve
[07:37] <costyn> that's what I figured :)
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[07:44] <number10> nice write up UpuWork
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[07:48] <UpuWork> cheers number10
[07:49] <UpuWork> was it you using the home made 1/4 wave ?
[07:49] <griffonbot> Received email: Anthony Stirk "Re: [UKHAS] Hello and congratulation to APEX Alpha"
[07:49] <number10> yes - I like fsphils comment about black radio magic
[07:49] <UpuWork> so basically it was just http://ava.upuaut.net/files/2010-09-03%2019-26-16_0003.jpg ?
[07:50] <number10> about that - I used a chassis mount BNC socket
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[07:50] <UpuWork> I was going to mention that at the conference but didn't get time
[07:51] <Darkside> oh god that heavy
[07:51] <Darkside> anyway
[07:51] <UpuWork> antenna on the cheap !
[07:51] <Darkside> standard forumla is radial is 0.235*wavelength in metres
[07:51] <UpuWork> 164mm...
[07:51] <Darkside> yeah, i get 162mm
[07:51] <Darkside> but thats close enough
[07:51] <UpuWork> I might borrow the clubs meter and test it
[07:52] Action: Darkside just uses a network analyzer
[07:52] <Darkside> >_>
[07:52] <number10> the on the cheap point I was trying to put accross seen as they were still students
[07:52] <UpuWork> some of us don't have access to that
[07:52] <Darkside> :P
[07:52] <Darkside> SWR meter works as a poor mans network analyzer
[07:52] <Darkside> just record the SWR at a number of points
[07:52] <AndChat-> Fecking postman is late!
[07:53] <AndChat-> Ew
[07:53] Nick change: AndChat- -> NigeyMoby
[07:53] <UpuWork> i did wonder
[07:53] <number10> you are lucky nige, the postman doesnt come to my hous untill 2pm
[07:53] <NigeyMoby> Dam that's late.
[07:55] <UpuWork> yeah I don't know where they go in the morning around our place but its not my house
[07:56] <NigeyMoby> Lol prolly the nearest cafe!
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[07:58] <number10> they spend all day talking to everyone - unless they do what the milkman I used to help out when I was a kid does
[07:59] <costyn> number10: which is?
[07:59] <number10> we used to collect from every house, and he collected from just one, and seemed to take about 1/2 an hour -
[07:59] <number10> the woman always answered the door in a noghtey
[07:59] <number10> nightey
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[07:59] <costyn> heh
[07:59] <number10> cant spell
[07:59] <NigeyMoby> Haha awsome
[08:00] <costyn> http://www.youtube.com/watch?v=Q9YL0yHohts on-topic
[08:01] <number10> very funny
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[08:52] <Lunar_Lander2> hello
[08:53] <Lunar_Lander2> hi GW8RAK
[08:54] <GW8RAK> Morning Lunar_Lander
[08:56] <Lunar_Lander2> how is the life?
[08:58] <GW8RAK> It's busy at work today. Just come to read, rather than contribute to any threads on here.
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[09:02] <Lunar_Lander2> yeah
[09:02] <Lunar_Lander2> hi daveake
[09:02] <daveake> hidy hi
[09:02] <Lunar_Lander2> I just had my new dose of quantum mechanics
[09:02] <daveake> Sounds painful
[09:03] <griffonbot> Received email: Steve Randall "Re: [UKHAS] Hello and congratulation to APEX Alpha"
[09:04] <Lunar_Lander2> yeha
[09:04] <Lunar_Lander2> but it was good
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[09:33] <Laurenceb> < dongs/#arduino> guys??? can i use arduino to convert HDMI to composite video??
[09:33] <Darkside> hahahahaha
[09:33] <Darkside> no.
[09:34] <NigeyMoby> Pmsl oh dear
[09:39] <NigeyMoby> I need 1 of these .... http://www.youtube.com/watch?v=a6ug5y0ovfU&feature=youtube_gdata_player
[09:47] <number10> get your ccredit card out NigeyMoby http://www.ebay.co.uk/itm/35-Mobile-Mast-Tower-Ham-Radio-Lighting-Security-/250578973909?pt=UK_ConsumerElectronics_SpecialistRadioEquipment_SM&hash=item3a57abb4d5
[09:50] <NigeyMoby> To small :( but dam.. 4k :o
[09:51] <number10> this one includes 60ft mast - only 8K http://www.ebay.co.uk/itm/60-ft-Mobile-Trailer-Mast-code-TM-60-/220873895124?pt=UK_ConsumerElectronics_SpecialistRadioEquipment_SM&hash=item336d1c2cd4
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[09:55] <SamSilver_> I think NigeyMoby has gone to rob a bank
[09:55] <SamSilver_> And he is back did you get the money?
[10:00] <daveake> He can't read the screen - he needs to remove the stocking from his head first.
[10:02] <SamSilver_> the masts are stacking up
[10:02] <SamSilver_> I found some inflatable ones
[10:05] <SamSilver_> http://www.youtube.com/watch?v=01A8K-ECkMs
[10:05] <SamSilver_> blow up antenna
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[10:15] <daveake> I could do with some sort of mast at home if we have any more trans-european flights to track. We're quite high up but when flights are low on the horizon they go below the tree line
[10:16] <daveake> Don't really want a permanent mast, so something I can erect (ooer missus) in a few minutes would be great.
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[10:26] <tazz> heh people from APEX team. Good job!
[10:27] <hibby> morning y'all
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[11:19] <Zuph> Morning, #highaltitude
[11:20] <hibby> morning dude
[11:21] <Zuph> How's life in sunny Scotland?
[11:26] <hibby> Skies are grey, the air is damp
[11:26] <hibby> pretty standard
[11:26] <hibby> had a lovely weekend up in the highlands injuring myself on rivers
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[11:33] <Zuph> Sounds like a grand old time.
[11:34] <hibby> always is
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[11:53] Action: hibby stares at matlab as it computes very, very, very slowly
[11:54] <hibby> maybe I'm plotting too many data points
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[12:18] <daveake> James May Man Lab trailer here - http://www.twitvid.com/ABJBZ
[12:19] Action: hibby hopes this series is better than the last
[12:20] <daveake> :)
[12:20] <Darkside> heh
[12:20] <Darkside> one clip of the launch
[12:20] <daveake> http://i805.photobucket.com/albums/yy339/forestcat04/James%20May/james_giant_balloon.jpg
[12:21] <Darkside> he shouldn't be touching it
[12:21] <daveake> Nope :D
[12:22] <hibby> oh well
[12:22] <hibby> http://i805.photobucket.com/albums/yy339/forestcat04/James%20May/james_giant_balloon.jpg
[12:22] <costyn> james, you cock! (as he would say)
[12:22] <hibby> dangit
[12:22] <hibby> http://youtu.be/djbQoVpsw4E
[12:22] <hibby> gave me a giggle
[12:23] <SpeedEvil> daveake: xkcd is sorta relevant
[12:25] <daveake> Remind me ........
[12:25] <SpeedEvil> http://xkcd.com/
[12:26] <UpuWork> keep your eyes out for the dashing chap in a green T-shirt on man lab
[12:26] <costyn> UpuWork: is it the new season?
[12:26] <daveake> dashing about?
[12:27] <daveake> http://xkcd.com/260/
[12:27] <cuddykid> looks like we have a spammer on the wiki
[12:27] <daveake> Oh?
[12:27] <UpuWork> where >
[12:27] <cuddykid> link to fireworks have been placed on a few pages randomly!
[12:27] <cuddykid> look on the changes page (1st 3)
[12:28] <daveake> losers
[12:28] <costyn> heh
[12:28] <UpuWork> tossers
[12:28] <UpuWork> I'll sort it
[12:28] <cuddykid> I thought the 1st one was legit as it was placed in a pyro cutdown section
[12:28] <UpuWork> and call them
[12:28] <daveake> :)
[12:28] <cuddykid> someone called macywales
[12:29] <UpuWork> google bashing
[12:29] <daveake> google says he does that a lot
[12:29] <UpuWork> play them at that game
[12:29] <hibby> I appear to have just posted my entire scrollback from here in a different channel
[12:29] <hibby> windows; what the actual fuck?
[12:29] <UpuWork> amend the link to "shit fireworks that don't go off"
[12:29] <daveake> lol
[12:29] <cuddykid> lol
[12:30] <Darkside> hibby: no, its more 'PuTTY' what the fucking fuck
[12:30] <hibby> Darkside: that too
[12:30] <Darkside> right clicking pastes
[12:30] <Darkside> which is bullshit
[12:30] <hibby> but windows doesn't work like linux... it's well confusing
[12:30] TimZaman (~chatzilla@535602CA.cm-6-7a.dynamic.ziggo.nl) joined #highaltitude.
[12:30] <hibby> Darkside: but I don't have a mouse on this machine!
[12:30] <hibby> I must have done something, but I can't work it out
[12:30] <TimZaman> who is educated enough to tell me what happens when i attach the 434075 and the 434650 on the same antenna?
[12:30] <costyn> is it just me or is this wiki hard to navigate? where's the 'recent changes' page?
[12:31] <daveake> click the changes button top-right
[12:31] <hibby> I find mediawiki pretty tough
[12:31] <TimZaman> i agree on the wiki
[12:31] <costyn> daveake: d'oh... don't know how I missed that :) and yes, I prefer mediawiki too; use it at work a lot
[12:31] <UpuWork> fixed
[12:32] <eroomde> UpuWork: NTX2 not turned up yet. Was it royal mail?
[12:32] <cuddykid> thanks UpuWork
[12:32] <cuddykid> my NTX2 turned up friday morning :D
[12:33] <cuddykid> TimZaman - my guess: provided they are not transmitting at the same time it should be fine I think
[12:33] <TimZaman> cuddykid: they will be though
[12:33] <cuddykid> ahh, there might be a problem then.. but not 100% sure
[12:33] <eroomde> costyn: the ukhas wiki?
[12:34] habaltitude (d42c14ce@gateway/web/freenode/ip. joined #highaltitude.
[12:34] <Darkside> hello generic hab nickname
[12:34] <costyn> eroomde: yes, I find it confusing to navigate :)
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[12:35] Nick change: daveake -> habituallydrunk
[12:35] Nick change: habituallydrunk -> daveake
[12:35] <UpuWork> jsut called Ghengis fireworks and talked the MD
[12:35] <UpuWork> lol
[12:35] <UpuWork> someones in trouble
[12:35] <daveake> :D
[12:35] <costyn> like there's no way to go to the frontpage without going through the sitemap as far as i can see
[12:35] <UpuWork> defacing servers in my colo
[12:35] <Darkside> lol UpuWork
[12:35] <costyn> UpuWork: hahaha WIN!
[12:35] <cuddykid> brilliant!
[12:35] <eroomde> costyn: it is 'known' to be difficult to navigate
[12:36] <eroomde> i think james said that that was part of its charm at the conference
[12:36] <eroomde> i'm not so sure
[12:36] <costyn> hehe well I can find everything I need, but it just seems I've used easier wiki's
[12:36] <eroomde> there's stuff on there i wrote about 5 (shiiiiiiiiiiiit) years ago
[12:37] <eroomde> that i tried to find the other day
[12:37] <eroomde> and gave up after about an hour
[12:37] <eroomde> charming
[12:37] <costyn> eroomde: that would irritate me to no end :)
[12:38] Nick change: habaltitude -> number10
[12:38] <Darkside> aha!
[12:39] <Darkside> generic hab nickname's true identitiy is revealed!
[12:39] juxta (~juxta@ppp203-122-193-94.static.internode.on.net) joined #highaltitude.
[12:39] <number10> I am cracking up
[12:40] <number10> should not log in while talking on the phone - thats my excuse anyway
[12:40] Nick change: daveake -> yesdeariwillbeho
[12:41] <yesdeariwillbeho> me soon ...
[12:41] Nick change: yesdeariwillbeho -> daveake
[12:41] <daveake> that didn't quiet work :D
[12:41] <daveake> quite
[12:42] <LazyLeopard> Hit the nicklengthlimitthere?
[12:42] <daveake> yep
[12:49] <UpuWork> is this loading for anyone : [13:42] <LazyLeopard> Hit the nicklengthlimitthere?
[12:49] <UpuWork> I hate cut and paste
[12:49] <UpuWork> https://apps.db.ripe.net/search/query.html.
[12:50] <number10> loads for me
[12:50] <UpuWork>
[12:50] <UpuWork> who owns that ?
[12:51] <LazyLeopard> Heh ;)
[12:51] <number10> i think address: see http://www.iana.org
[12:53] <LazyLeopard> - GLOBET-PH: Globe Telecom/Innove Communication: Makati City: PH
[12:53] <costyn> UpuWork: use whois on the commandline?
[12:53] <UpuWork> ah odd ok thanks didn't work before
[12:53] <UpuWork> thanks
[12:53] <costyn> what country is PH?
[12:54] <LazyLeopard> Some ISP in the Phillipines, it seems...
[12:54] <costyn> oh Phillipines
[12:54] <LazyLeopard> ...or Philipines, even. ;)
[12:54] <LazyLeopard> Philippines?
[12:54] <costyn> heh
[12:54] <LazyLeopard> None of them look right. ;)
[12:55] <costyn> according to the whois of that IP range it's Philippines
[12:55] <UpuWork> strange
[12:55] <UpuWork> oh well
[12:55] <number10> sorry my post was numbers authority
[12:55] <UpuWork> some silly marketing company probably
[12:56] Dan-K2VOL (~Dan-K2VOL@74-143-44-42.static.insightbb.com) joined #highaltitude.
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[13:24] <Laurenceb> ok this is weird
[13:25] <Laurenceb> my stm32 i2c breaks when i connect USART1 up to screen on ym pc
[13:25] <Laurenceb> what does screen actually do... could it be echoing back?
[13:27] <costyn> Laurenceb: screen as in the unix program 'screen'?
[13:27] <Laurenceb> yes
[13:27] <costyn> afaik it's just another terminal emulator; it might send some funny chars when it connects to the serial interface tho
[13:27] <Darkside> i dont think screen echoes back
[13:27] <costyn> no it doesn't by default
[13:27] <Randomskk> screen is likely to assert DTR
[13:27] <Laurenceb> how strange
[13:27] <Zuph> Not by default.
[13:27] <Laurenceb> DTR isnt used
[13:27] <Randomskk> so you might want to check if DTR is getting asserted
[13:28] <Zuph> Laurenceb: What STM32 part?
[13:28] <Laurenceb> stm32f103
[13:28] <Laurenceb> only tx and rc are connected
[13:28] <Laurenceb> *rx
[13:28] <Laurenceb> all i can think is its chucking back a ton of data
[13:28] <Randomskk> put it on a scope or logic analyser, but
[13:28] <Randomskk> I doubt it
[13:28] <Laurenceb> guess i could scope it
[13:28] <Laurenceb> or noise interfereing
[13:29] <Laurenceb> but it boots if its connected to the pc
[13:29] <Laurenceb> if i boot then start screen 1s later its fine
[13:29] <Zuph> Laurenceb: Doing any pin remapping?
[13:30] <Laurenceb> yes
[13:30] <Laurenceb> not of usart1
[13:30] <Laurenceb> actually.. it might be my sensors
[13:30] <Laurenceb> i was power cycling the processor but not the sensor rail
[13:30] <Laurenceb> they might be getting confused and asserting the bus
[13:31] <Laurenceb> - my serial adaptor is off the sensor rail so i lose /dev/ttyUSB0 if i power cycle the sensors
[13:36] <Laurenceb> yeah thats the issue
[13:36] <Laurenceb> epic it works XD
[13:37] <Laurenceb> pretty cool to watch all the crazyness on the i2c bus with the scope :P its almost used 100% of the time
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[13:40] <Zuph> hehe
[13:40] Last message repeated 1 time(s).
[13:40] <Zuph> Woah, bad irssi
[13:41] Dan-K2VOL (~Adium@74-143-44-42.static.insightbb.com) joined #highaltitude.
[13:41] <Laurenceb> -interrupt driven i2c with sensor data ready EXTI interrupts firing it off
[13:41] <Zuph> Got one of these to play around with the other day: http://teholabs.com/products/procyon.html
[13:42] <Laurenceb> you can see the different sensors adc clks drifting relative to one another on the scope now
[13:42] <Laurenceb> lots of ram
[13:43] <Zuph> Seriously.
[13:46] <Laurenceb> heh the different blocks of byte transfers drift towards each other and pop to the other side
[13:46] <Laurenceb> so pretty :P
[13:47] <Laurenceb> well.. if you find these things pretty
[13:48] <SpeedEvil> http://www.whatdotheyknow.com/request/how_many_people_are_eligible_for/new
[13:48] <SpeedEvil> argh
[13:51] <Zuph> I need to get a decent scope.
[13:52] <Laurenceb> https://github.com/Laurenceb/Dactyl/blob/master/i2c_int.c
[13:54] harok222 (47c11632@gateway/web/freenode/ip. joined #highaltitude.
[13:55] <harok222> lets make a rocket!
[13:57] <Laurenceb> lets make a baby
[13:57] <harok222> lol
[13:57] <harok222> im too ugly to make a baby but a rocket i might be able to do
[13:58] <daveake> It's the same basic idea ... tube and propellant
[13:59] <Laurenceb> lmao
[14:00] <costyn> haha
[14:01] <harok222> has anyone here ever seen an amateur rocket launch? some day i will go to mojave, california to watch one, maybe
[14:02] <fsphil> I did a water rocket once
[14:02] <costyn> fsphil: me too... good fun
[14:03] <harok222> what's the specific impulse of that compressed air / water rocket ?
[14:03] <harok222> did you pump it to pressurize it?
[14:03] <costyn> harok222: yes, up to 10 bar
[14:03] <fsphil> yea .. until it started creaking
[14:04] <costyn> harok222: I'm not sure what the specific impulse was, never measured speed.
[14:04] <costyn> http://en.wikipedia.org/wiki/File:WaterRocketLaunch.jpg
[14:04] <costyn> that was one of mine
[14:05] <harok222> seriously? cool
[14:05] <costyn> there was no wikipedia page on water rockets at the time, started it and now it's leading it's own life hehe
[14:05] <costyn> but my pic is still there :)
[14:05] <Zuph> They're a lot of fun. Kids love 'em
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[14:08] <costyn> made a compressed air spud gun following that, but seeing as they're illegal here in NL never did much with it
[14:08] <harok222> why's it illegal?
[14:08] <harok222> does it go faster than a gunpoweder gun?
[14:09] <fsphil> good picture costyn
[14:09] <costyn> harok222: no, but they do pack a lot of power and in worst case you could kill someone with it (potato to the head a close range)
[14:09] <harok222> i see
[14:10] Action: Laurenceb made a few propane cannons
[14:10] Action: SpeedEvil ponders a propane canon.
[14:10] <Laurenceb> i made a spigot round with crossbow bolts
[14:10] <harok222> laurenceb, did you have to worry about heat buildup
[14:10] <Laurenceb> went though breeze block walls quite well
[14:10] <costyn> fsphil: yea had to use a DSLR in sports mode to get that pic
[14:10] <Darkside> sports mode? >_>
[14:11] <daveake> I don't think it's safe around you lot ....... :p
[14:11] <Laurenceb> harok222: i just used a 2L coke bottle, so yes
[14:11] <costyn> Darkside: hehe... high speed
[14:11] <costyn> Darkside: and continuous shooting
[14:11] <Laurenceb> olympic propane cannons
[14:11] <Laurenceb> now that would be worth watching
[14:11] <Laurenceb> also, condoms filled with petrol
[14:12] <Laurenceb> fired out of a propane cannon is fun
[14:12] <costyn> haha wtf... the petrol doesn't melt the condom?
[14:12] <Laurenceb> hmm maybe it was white spirit, i forget
[14:12] <Laurenceb> im too old for this stuff now XD
[14:13] <Laurenceb> but when i was 14...
[14:13] <Laurenceb> ive got a scar down the side of my neck from a pipebomb that went wrong :P
[14:14] <SpeedEvil> 'lubricated or unlubricated Sir?' 'I don't know, what will resist petrol better?'
[14:15] <Laurenceb> haha
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[14:15] <Zuph> Hah, illegal spud guns
[14:15] <Laurenceb> that sucks
[14:15] Action: Zuph America, Fuck Yeah
[14:15] <costyn> Zuph: hehe indeed
[14:15] Action: LazyLeopard is reminded of "Porterhouse Blue"...
[14:15] <Laurenceb> what are you supposed to do in your spare time
[14:15] <Laurenceb> if you can even blow shit up
[14:15] <Zuph> One of the guys at the hackerspace is thinking about getting the space licensed as a Class 3 Weapons Manufacturer.
[14:16] <Zuph> So he can build machine guns.
[14:16] <costyn> haha wtf
[14:16] <Zuph> Rather, parts.
[14:16] <Laurenceb> protip: always protect your neck when working with explosives :P
[14:16] <harok222> which hackerspace?
[14:16] <harok222> crashspace?
[14:16] <Laurenceb> i had face sheild and thick jacket, but no neck protection
[14:17] <harok222> i hear you need licenses to make rockets too
[14:17] <harok222> i dont understand why its treated like an explosive though
[14:17] <SamSilver_> HD HERO2 camera, which is claimed to be "2X as Powerful in Every Way." More specifically, it has an 11-megapixel image sensor (as opposed to the regular camera's 5 mp)
[14:17] <Zuph> LVL1.
[14:17] <Laurenceb> yeah but is the lens that good
[14:17] Nick change: SamSilver_ -> SamSilver
[14:18] <Laurenceb> if the point spread function smears across several pixels...
[14:18] <SpeedEvil> My n900 does that. :/
[14:18] <SamSilver> Laurenceb: busy reading up Comp. promo bumpf
[14:18] <SamSilver> and a redesigned lens that GoPro claims is both twice as sharp and capable of a complete 170-degree field of view even in widescreen 1080p mode.
[14:18] <SpeedEvil> Laurenceb: To be fair - doing that does reduce bayer artifacts.
[14:18] <SpeedEvil> So it's not quite ridiculous.
[14:19] <harok222> what do you guys think of spy satellite cameras, do you think they can see a license plate from space?
[14:19] <SpeedEvil> Yes.
[14:19] <SamSilver> http://www.gizmag.com/gopro-releases-hd-hero2/20256/?utm_source=Gizmag+Subscribers&utm_campaign=770c225866-UA-2235360-4&utm_medium=email
[14:19] <Laurenceb> maybe
[14:19] <SpeedEvil> Reading it may be problematic though.
[14:19] <SpeedEvil> harok222: 1.22*y/d is your friend.
[14:19] <harok222> the wavelength of light would make that difficult, but maybe you can slow down the speed of light in a material first, thus reducing the wavelength? or use metamaterials
[14:19] <BrainDamage> probably, consider you can reckognize a car model on google maps already
[14:20] <BrainDamage> and that's civillian "low res"
[14:20] <SpeedEvil> harok222: fail.
[14:20] <SpeedEvil> harok222: Your resolution cannot be better than your apature limit
[14:20] <SpeedEvil> Which is generally the diameter of the primary mirror or lens
[14:20] <harok222> have you heard of metamaterial lenses?
[14:21] <SpeedEvil> Not relevant in the case of spysats
[14:21] <harok222> http://en.wikipedia.org/wiki/Superlens
[14:21] <harok222> right, it's just to prove it's possible
[14:23] <SpeedEvil> This works for microscopy, not telescopy
[14:23] <harok222> it's theoretical still, but it might be made to work one day for telescopes
[14:23] <harok222> i think
[14:24] <SamSilver> Would like to find one of these under the x mas tree. http://www.youtube.com/watch?v=wf_2E2IPk1M&feature=player_embedded
[14:24] <harok222> my theory is spysats use (freq) x (wavelength) = (speed of light). if you decrease the speed of light via a lens, the wavelength goes down and you can zoom in more, maybe ???? frequency stays the same.
[14:25] <SpeedEvil> That doesn't work for telescopes, as the input image is not near field.
[14:25] <harok222> what does near field mean?
[14:25] <Randomskk> you'd need to change the speed of light from the sat to the ground
[14:25] <harok222> that could be hard...
[14:26] <BrainDamage> within 1 wavelenght
[14:26] <SpeedEvil> Yes, you basically need the telescope to be almost pressed to the object in question.
[14:26] <BrainDamage> which for light is few um
[14:26] <SpeedEvil> In which case, it's not really needed anymore.
[14:26] <harok222> so maybe it would work for lithography but not a telescope?
[14:26] <SpeedEvil> yes
[14:27] <harok222> then how DO they see license plates in space ???? maybe they have many infrared cameras far apart and use some kind of interference then ??? i'm baffled.
[14:27] <SpeedEvil> A bloody big mirror.
[14:27] <harok222> it should be fuzzy though
[14:28] <harok222> like, bigger than Hubble?
[14:28] <SpeedEvil> Sure.
[14:28] <SpeedEvil> yes.
[14:28] <Laurenceb> i doubt they can read license plates
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[14:29] <harok222> a book on the CIA says they can, it's relatively authoritative
[14:29] <harok222> it says they generally zoom out to see more though
[14:29] <Laurenceb> hmm
[14:29] <Laurenceb> its this book from prisonplanet.net?
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[14:30] <harok222> uh, no from amazon.com
[14:30] <harok222> its not a conspiracy book
[14:30] <Laurenceb> hmm
[14:30] <SpeedEvil> harok222: Do not believe CSI zooms.
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[14:30] <Laurenceb> haha yeah
[14:30] <SpeedEvil> http://en.wikipedia.org/wiki/IMINT
[14:30] <costyn> http://www.makemymood.com/2009/10/21/csi-zoom-story
[14:30] <SpeedEvil> Modern U.S. IMINT satellites are believed to have around 10cm resolution; contrary to references in popular culture, this is sufficient to detect any type of vehicle, but not to read the headlines of a newspaper.[2]
[14:31] <Laurenceb> http://en.wikipedia.org/wiki/File:Iraq-030205-powell-un-slide-15.jpg
[14:31] <Laurenceb> erm.. you arent going to read any numberplates there
[14:31] <SpeedEvil> To read a licenceplate reliably, you're going to need a big mirror.
[14:31] <harok222> "Modern U.S. IMINT satellites are believed to have around 10cm resolution; contrary to references in popular culture, this is sufficient to detect any type of vehicle, but not to read the headlines of a newspaper"
[14:32] <Zuph> Modern US satellites have ~3m mirrors, iirc.
[14:32] <Zuph> (Compare to hubble's 2.4)
[14:32] <SpeedEvil> For much better, you're going to need a _much_ more advanced thingy.
[14:32] <SpeedEvil> Or UAVs
[14:32] <SpeedEvil> Which are lots cheaper.
[14:33] <SpeedEvil> http://en.wikipedia.org/wiki/James_Webb_Space_Telescope
[14:33] <BrainDamage> I was going to say, it's easier to get an observer closer
[14:33] <costyn> SpeedEvil: UAVs sound more plausible yea
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[14:33] <SpeedEvil> A mirror like that might get you 3cm, on a good day.
[14:33] <Laurenceb> sad that spy sats exceed hubbles mirror size
[14:33] <Laurenceb> and theres loads of them as well :(
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[14:34] <harok222> I heard if you want to photograph from space you need "permission" from NRO
[14:34] <BrainDamage> killing people is more important than knoledge research
[14:34] <SpeedEvil> An interesting calculation I did was that it's quite possible to use a modest laser illuminator on a target on the ground, if tehre isn't enough light.
[14:34] <SpeedEvil> From a spysat.
[14:35] <costyn> harok222: define 'space'?
[14:35] <harok222> maybe you could use the laser to see vibrations on a window? i.e. "listen in" from space?
[14:35] <harok222> um, orbit = space
[14:35] <costyn> harok222: low earth orbit? geostationary?
[14:35] <harok222> NRO wants you to get their permission if you intend to gather ANY EM data from earth orbit or higher
[14:35] <harok222> even low earth orbit
[14:35] <SpeedEvil> Not really.
[14:35] <SpeedEvil> The atmosphere varies _lots_
[14:36] <SpeedEvil> The path between the object, and teh sat will be very variable on a millisecond basis.
[14:36] <SpeedEvil> This will scramble reflective info
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[14:36] <harok222> i wonder if squeezed light or fancy stuff we cant dream up could fix all that
[14:38] <harok222> there are military satellites that use lasers to measure the distance between pairs of satellites. this maps gravity, used for inertial navigations.
[14:38] <SpeedEvil> Optical interferometry is in principle possible, but it's messy in the details.
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[14:44] Action: harok222 is in california. gotta go to work soon.
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[14:48] <harok222> gbye yall
[14:48] harok222 (47c11632@gateway/web/freenode/ip. left irc: Quit: Page closed
[14:49] <NATO_> I have posted a brief explanation on how to convert FRS radios for amateur frequencies (for use in a balloon). This could also work for PMR-446 radios. http://diyjunky.blogspot.com/2011/10/modifying-frsgmrs-radio-for-ham.html
[14:50] <costyn> that guy was kind of annoying
[14:52] chris_99 (~chris_99@unaffiliated/chris-99/x-3062929) joined #highaltitude.
[14:53] <Zuph> Yes he was.
[14:53] <Zuph> NATO_: That's really neat.
[14:53] <costyn> he had to go to work? middle-school I think he meant :P
[14:56] <NATO_> I'm going to send up an FRS radio in the next couple of weeks. I'll post my results on range and such.
[14:57] <Zuph> Should be pretty good at 500 mW
[14:58] <Laurenceb> costyn: yeah lol
[14:59] <Laurenceb> oh thats why my sensor is reading at 1780C
[15:00] <Laurenceb> wrong endianess XD
[15:00] <UpuWork> harok222 is what happens when you get on slashdot...
[15:00] <NATO_> Zuph, it will be 500mW (probably more with higher Voltage battery and better antenna) but I will need a strong signal since I'm using AFSK.
[15:01] <costyn> UpuWork: hehe
[15:01] <GW8RAK> what's slashdot UpuWork? (hope I'm not showing my ignorance)
[15:01] <Zuph> GW8RAK: Slashdot.org
[15:02] <Zuph> Major tech/nerd news aggregator
[15:02] <UpuWork> http://science.slashdot.org/story/11/10/23/2330244/uk-team-misses-balloon-altitude-record-but-beats-a-few-others
[15:02] <costyn> I used to read slashdot a lot
[15:02] <NATO_> BTW, I've read a bit about the method used here of RTTY and SSB. I think that by controlling the PLL of an FRS radio, you could achieve the same result.
[15:02] <costyn> back at uni; now, not so much
[15:03] <GW8RAK> Thanks Zuph. It wasn't till I came on here I discovered chat channels.
[15:03] <Zuph> heh
[15:03] <GW8RAK> Never used one before
[15:03] <UpuWork> basically slashdot does news from other sites but just with a delay of a week
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[15:03] <GW8RAK> So "almost news" is the best description then?
[15:04] <costyn> well I didn't go to Slashdot for the articles themselves; usually the comments and discussions were the best bit. There's always someone in the community that knows a lot about the subject at hand and then gives interesting commentary or answers questions that are posted
[15:05] <Laurenceb> NATO_: i thought of doing psk with delay lines and a switch
[15:05] <Laurenceb> a bit hackish, but fairly simple
[15:05] <NATO_> Laurence, how would that work?
[15:06] <Laurenceb> digikey have single to differential baluns
[15:07] <Laurenceb> youd need one of those
[15:07] <Laurenceb> then a DPDT RF switch iirc
[15:07] <Laurenceb> so you can invert the phase to the ant
[15:21] <SamSilver> what diode to use with a 5V relay to stop back EMF coil resistance 500 ohms ?
[15:23] <daveake> 1N400n
[15:24] <SamSilver> thanx daveake
[15:24] <griffonbot> Received email: Anthony Stirk "Re: [UKHAS] Hello and congratulation to APEX Alpha"
[15:25] <Laurenceb> http://www.gnu.org/fun/jokes/eternal-flame.html
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[15:39] <NATO_> Laurenceb, sounds interesting. What kind of radio do you need to listen to it?
[15:42] <Laurenceb> SSB
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[16:01] <griffonbot> Received email: Steve Randall "[UKHAS] Anyone using dl-fldigi on a mac?"
[16:06] <fsphil> I might, if someone wants to donate a mbp :)
[16:11] <fsphil> crikey! even second hand they're more expensive than my thinkpad
[16:19] <LazyLeopard> That's Apple for you.
[16:19] <LazyLeopard> Probably also explains why folks with Apple kit don't seem to replace it as often...
[16:25] <Dan-K2VOL> I do
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[17:07] <nosebleedKT> hi all
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[17:20] <griffonbot> Received email: Guy Richardson "[UKHAS] Re: Hello and congratulation to APEX Alpha"
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[17:30] <griffonbot> Received email: Guy Richardson "[UKHAS] Re: Hello and congratulation to APEX Alpha"
[17:34] <k5egg> fsphil: Apple starts out selling a "$400 laptop" worth of hardware for $1400
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[17:51] <number10> Upu , rjharrison - James May's man labs starts tonight - but I think not cat and canary episode
[17:51] <Upu> yeah its not the episode tonight
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[18:00] Nick change: cuddykid_ -> cuddykid
[18:01] <somnium> can anyone confirm the Lassen IQ works above 60k?
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[18:07] <Laurenceb_> si4432 eval board arrived
[18:07] <Laurenceb_> *boards
[18:07] <Laurenceb_> they look legit, very good for £3.50
[18:09] <Laurenceb_> only 16mm square
[18:09] <Zuph> Cheap.
[18:09] <Zuph> Whatsit for?
[18:10] <Laurenceb_> communicating with UAVs
[18:11] <Laurenceb_> from chinese seller on ebay
[18:11] <Laurenceb_> im tempted to make a jcoxon style picohab now :P
[18:12] <Zuph> heh
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[18:12] <Zuph> Shame these cheap, simple, integrated transmitters/transceivers can't do RTTY.
[18:14] <Laurenceb_> well if you want 1Kbps...
[18:14] <Laurenceb_> cc1020 can be hacked to extract baseband
[18:15] <Laurenceb_> actually so can si4432
[18:15] <Laurenceb_> but youd need an ADC
[18:15] <Laurenceb_> you can chuck baseband out of the gpio pins
[18:15] <Laurenceb_> thatd give you !Mhz or so of spectrum
[18:15] <Laurenceb_> *1
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[18:16] <Laurenceb_> si4432+stm32 could make a poor manf funcube dongle :P
[18:16] <Laurenceb_> *mans
[18:16] <Zuph> heh
[18:17] <Laurenceb_> as stm32 adc is very fast and has dma
[18:18] <Laurenceb_> http://ukhas.org.uk/guides:chipcon_cc1020_software_define_radio <- is the simplest way, but the eval board are expensive
[18:18] <Zuph> I'd just like a super cheap, simple transmitter that I can pick up with an HT and decode with FL-DIGI.
[18:18] <Laurenceb_> you can transmit a carrier and change the frequency
[18:18] <Laurenceb_> should work find for 50baud rtty
[18:18] <Laurenceb_> *fine
[18:19] Action: Laurenceb_ like SDR
[18:19] Action: Laurenceb_ needs to learn to type
[18:19] <fsphil-laptop> me like cookies
[18:20] <Laurenceb_> actually i should try a si4432 SDR
[18:20] <Zuph> Yeah, just having trouble finding a part that'll let me twiddle the carrier by so little.
[18:20] <Laurenceb_> the si4432 LNA only has a 4dB noise figure
[18:20] <Laurenceb_> cc1020 is 325hz or so pll step size
[18:21] <Laurenceb_> and the si4432 is very tunable, not sure what harmonic rejection is like
[18:21] <Laurenceb_> but from the datasheet it should work quite well
[18:21] <Laurenceb_> id guess better than funcube, just less frequency range
[18:22] <Laurenceb_> actually no, the input impedance matching doesnt like frequency changes
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[18:29] <Hiena> Hiya all!
[18:31] <Zuph> Actually, it looks like the cc1070 might be what I'm looking for.
[18:32] <Hiena> The APEX launch got me thinking. How about making tracker receivers from an old TV tuners? These bastards usually requires few supply voltage and a VCO tuning voltage and spew out the demodulated composite video and sound.
[18:34] <SpeedEvil> Finding suitable documented tuners in high enough availability to bother is gonna be fun.
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[18:35] <SpeedEvil> I was - a couple of years ago - wanting to make a teeeny TV transmitter for the n900.
[18:35] <SpeedEvil> It was all completely doable.
[18:35] <griffonbot> Received email: James Coxon "Re: [UKHAS] Anyone using dl-fldigi on a mac?"
[18:35] <Zuph> Hiena: Dan had an idea like that a while ago.
[18:35] <SpeedEvil> Except the composite modulator chips had been axed a year before.
[18:36] <Zuph> Internet controlled SDR in a box. Send one to grandma, and tell her to plug it in, and it automatically connects to wifi, and waits for a command.
[18:36] <Hiena> The UHF ch.22 only 30MHz higher from the tracker, so only a few voltage drop on the VCO voltage should be enough to reach the frequency.
[18:36] <Hiena> Maybe a PIC and a serial DA would be enough for the PLL function.
[18:37] <SpeedEvil> It's kinda barking mad that there are people - and not that few of them - that can stream a megahertz of spectrum at you.
[18:38] <Hiena> Okay. I'll check the local electronic hobby store for the old Videoton tuner prices.
[18:39] Lunar_Lander (~Miranda@p54A06617.dip.t-dialin.net) joined #highaltitude.
[18:39] <Lunar_Lander> hello
[18:39] <SpeedEvil> I have a pile of 'Nicamiser's
[18:39] <SpeedEvil> These were add-on boxes from a factory nearby
[18:39] <SpeedEvil> To add nicam728 to a TV
[18:40] <Hiena> Or... Got a better idea! I have insider contact in the local Philips manufacturing company. He could access to the digital Philips tuners schematics and codes.
[18:45] <Lunar_Lander> lol
[18:48] <GW8RAK> Just found the thread, how about this idea http://hem.passagen.se/communication/uv916rec.html
[18:49] <nosebleedKT> can i add my project to ukhas project list?
[18:49] <Lunar_Lander> hi GW8RAK
[18:49] <Lunar_Lander> and hi nosebleedKT
[18:49] <Lunar_Lander> yeah, it's quite easy
[18:49] <nosebleedKT> yo luna, got the stuff
[18:49] <nosebleedKT> ?
[18:50] <Lunar_Lander> yeah :) will send it to you
[18:50] <Lunar_Lander> and: are you registered on ukhas.org.uk?
[18:50] <Lunar_Lander> if not, click "Login" and then "register"
[18:50] <Lunar_Lander> then you can create a project page
[18:50] <nosebleedKT> i think i have an account there. i used it to document the ublox protocol
[18:50] <Lunar_Lander> ah
[18:51] <Lunar_Lander> then you can login, go into the Projects section
[18:51] <GW8RAK> Evening Lunar_Lander
[18:52] <Lunar_Lander> GW8RAK : the Apex people showed me a Application Note by Maxim about using a photocell for gamma detection
[18:52] <Lunar_Lander> just as we had discussed it
[18:53] <GW8RAK> Good. Think it can be done on a payload?
[18:53] <Hiena> http://home.scarlet.be/on8svh/homebrew/vhf_uhf_ontvanger/index.html
[18:54] <GW8RAK> TV tuners are very useful, but they don't often carry any markings. I've stripped a few tv's to get an UV916 but without luck
[18:55] <Lunar_Lander> GW8RAK : http://www.maxim-ic.com/app-notes/index.mvp/id/2236
[18:56] <Hiena> GW8RAK: No problem. I could ask for the correct part numbers and the used chips.
[18:56] <nosebleedKT> Lunar_Lander: so you got them ?
[18:57] <nosebleedKT> when do you think you will send them ?
[18:58] <GW8RAK> Looks good Lunar
[18:59] <Lunar_Lander> tomorrow I think nosebleedKT
[18:59] <Lunar_Lander> yeah GW8RAK
[19:00] <GW8RAK> Looks promising. I'll have a read, but bbl
[19:00] <nosebleedKT> on Thursday i will tell someone to put 20e in the paypan so I send you from there. Ok?
[19:00] <nosebleedKT> I cant go cause im working
[19:06] <Lunar_Lander> yeah
[19:06] <Lunar_Lander> that other guy brings the 20euro to the bank?
[19:11] <Hiena> Ehem. Already found UV-916 tuner for 2890HUF (10EUR) with 6 month guarantee.
[19:13] <Lunar_Lander> HUF?
[19:13] <Hiena> Hungarian forint.
[19:14] <Lunar_Lander> ah
[19:14] <Lunar_Lander> Hiena are you from there?
[19:16] <Hiena> Yup.
[19:16] <Lunar_Lander> cool
[19:16] <Lunar_Lander> sorry for never realizing that
[19:16] <Lunar_Lander> :)
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[19:17] <nosebleedKT> Lunar_Lander
[19:18] <nosebleedKT> i send my mom to the bank
[19:18] <nosebleedKT> and when the money becomes available on paypal
[19:18] <nosebleedKT> i will send it through it
[19:18] <nosebleedKT> ok?
[19:18] <Lunar_Lander> ah
[19:18] <Lunar_Lander> yeah!
[19:18] <Lunar_Lander> :)
[19:18] <nosebleedKT> :)
[19:19] <nosebleedKT> Lunar_Lander tell merkel to send more money cause we bankrupt here :P
[19:21] <Lunar_Lander> :P
[19:21] <Lunar_Lander> we had a funny idea
[19:21] <Lunar_Lander> we have a new lecture
[19:21] <Lunar_Lander> "History of Physics" and the prof said he doesn't really like to talk about the ancient greeks
[19:22] <Lunar_Lander> but he was forced to refer to them all the time
[19:22] <Lunar_Lander> so we wanted to make a bank where you put in money, every time he says "Greeks"
[19:22] <Lunar_Lander> XD
[19:22] <nosebleedKT> lol
[19:23] <Laurenceb_> http://www.eatliver.com/i.php?n=6583
[19:23] <nosebleedKT> Laurenceb +
[19:23] <nosebleedKT> Laurenceb +1
[19:23] <nosebleedKT> i got a funny one though: http://26.media.tumblr.com/tumblr_le13vjxWTi1qfplr3o1_500.png
[19:24] <Lunar_Lander> nosebleedKT : did you see this one yet http://www.maxim-ic.com/app-notes/index.mvp/id/2236 ?
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[19:26] <nosebleedKT> we should try to put some living creatures on the payload so we see if they survive in cold and no oxygen :P
[19:30] <nosebleedKT> Lunar_Lander: the circuit is simple i think :) maybe we make some 5x5cm boards for them :)
[19:34] <Lunar_Lander> yeah :)
[19:34] <Lunar_Lander> nosebleedKT : yeah, do you know Tardigrades?
[19:34] <Lunar_Lander> they are awesome
[19:34] <Lunar_Lander> http://en.wikipedia.org/wiki/Tardigrade
[19:34] <nosebleedKT> what is this?
[19:36] <Lunar_Lander> they can survive space
[19:36] <fsphil-laptop> aliens!
[19:36] <Lunar_Lander> :)
[19:39] <nosebleedKT> where does this leave? on us?
[19:39] <nosebleedKT> sure i got a thousand of them on me
[19:39] <nosebleedKT> :P
[19:39] <Lunar_Lander> :P
[19:39] <Lunar_Lander> it lives in ponds of water
[19:39] <nosebleedKT> aahh
[19:45] <Lunar_Lander> btw
[19:45] <Lunar_Lander> as there are many british in here
[19:45] <Lunar_Lander> what do you think about Richard Dawkins?
[19:47] <nosebleedKT> hawkins?
[19:47] <Lunar_Lander> no, Dawkins
[19:47] <Lunar_Lander> Hawkins is awesome
[19:47] <Lunar_Lander> Dawkins is a biologist and atheist
[19:47] <nosebleedKT> lol
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[20:06] <somnium> Hi all
[20:08] <Lunar_Lander> hi somnium
[20:09] <somnium> Could any one give me some advice on the Lassen IQ, does it work above 60k? As i looked on a data sheet and it says its limit is 60k. But its recomended on the UKHAS site..
[20:10] <Upu> I think they've been used sucessfully
[20:10] <Upu> the COCOM limits say it should disable if its over 60000 AND going more than 500 knots I think
[20:11] <Upu> as long as you balloon doesn't do more than 500 knots you should be ok, if it is doing more than that you have bigger issues
[20:12] <somnium> I would be surprised if we manage more than 500 knots!
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[20:15] <somnium> I think i understand now.. As it uses and AND statement, more the altitude and speed need to be too large before it gets blocked
[20:17] <SpeedEvil> Some get it wrong, and use OR
[20:17] <priyesh> somnium: Upu: Alpha used the iQ. It's all okay! :P
[20:18] <somnium> Thanks!!
[20:19] <daveake> I used the IQ too. I set mine to flight mode, using the Trimble setup software, but I don't believe that's necessary. For some others (e.g. ublox) it is.
[20:19] <jonsowman> it isn't
[20:20] <daveake> ta
[20:20] <jonsowman> can't hurt though :)
[20:20] <daveake> That's what I thought :)
[20:20] <Lunar_Lander> hi SpeedEvil daveake priyesh jonsowman
[20:20] <jonsowman> hi
[20:20] <SpeedEvil> "
[20:20] <daveake> Also set it to "sensitive" mode. Which I guess is slightly better than it usually is!
[20:20] <priyesh> hi
[20:20] <Lunar_Lander> I think it's 1000 knots
[20:21] <daveake> Still more than a hab will do unless it gets collected by a fast jet ...
[20:21] <Lunar_Lander> definately
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[20:32] <Laurenceb_> for(n=0;n<sizeof(Bmp_Cal_Type)/2;n++)
[20:32] <Laurenceb_> Flipbytes(((uint16_t*)cal)[n]);
[20:33] <Laurenceb_> ^if cal is a struct of type bmp_cal_type, will that loop through it in units of two bytes?
[20:34] <SpeedEvil> I think so
[20:35] <nosebleedKT> anyone knows if its easy to decode KISS messages?
[20:36] <jonsowman> KISS?
[20:37] <nosebleedKT> it has to do with TNC.
[20:37] <nosebleedKT> im not so familiar with it
[20:38] <jonsowman> a KISS mode TNC is just one that doens't do the AX.25 stuff
[20:38] <jonsowman> that's left to the upstream device, usually a computer
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[20:39] <nosebleedKT> you means it doesnts decode the ax25 frame but sends it raw?
[20:39] <jonsowman> correct
[20:39] <nosebleedKT> so thats why i get garbage output
[20:40] <nosebleedKT> but the aprs comment comes out with normal printable output
[20:40] <nosebleedKT> == BeRTOS AVR/Arduino KISS TNC
[20:40] <nosebleedKT> == RX/TX Version 0.02, Build 223
[20:40] <nosebleedKT> == Starting.
[20:40] <nosebleedKT> @@`¨¤‚†Šjkð`3=,l#Ej/]"4W}GRAND VITARA
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[20:42] <nosebleedKT> so here i guess its sends callsigns as raw
[20:42] <nosebleedKT> but sends the aprs message decoded?
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[20:42] <nosebleedKT> what anyway?
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[21:07] <NigeyS> ping laurenceb
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[21:09] <Lunar_Lander> hi NigeyS
[21:09] <NigeyS> hi kev
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[21:10] <rjharrison_> Evening all
[21:11] <NigeyS> evening robbie, how's things ?
[21:11] <rjharrison_> FYI James may balloon stuff is episode 3 of man lam BBC 2 8th Nov
[21:11] <NigeyS> awsome!!
[21:11] <rjharrison_> Busy but good
[21:12] <NigeyS> it was back on tonight wasnt it ?
[21:12] <rjharrison_> Upu you there
[21:12] <rjharrison_> NigeyS: Yes
[21:12] <NigeyS> cool, will grab it on iplayer later!
[21:12] <rjharrison_> Ping upu
[21:13] <rjharrison_> Hum... I'll shout 62 off upu
[21:13] <rjharrison_> Leave you a ton
[21:14] <rjharrison_> Chat soon on that busy with work ATM
[21:14] <Lunar_Lander> hi rjharrison
[21:14] <rjharrison_> Hey lun
[21:14] <rjharrison_> Opps
[21:14] <rjharrison_> iPad is not too good for this
[21:14] <NigeyS> lol
[21:15] <rjharrison_> Right got to Dash
[21:15] <Upu> rjharrison
[21:15] <Upu> meh
[21:15] <Upu> always miss you
[21:15] <Upu> :)
[21:15] <rjharrison_> Go on
[21:15] <Lunar_Lander> XD!
[21:15] <rjharrison_> Is that ok
[21:15] <Upu> evening :)
[21:15] <Lunar_Lander> rjharrison is loved by the world!
[21:15] <Upu> episode 3 thank :)
[21:16] <Lunar_Lander> uh
[21:16] <Lunar_Lander> is there now rjharrison - the movie?
[21:16] <Lunar_Lander> xD
[21:23] <rjharrison_> /away
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[21:24] <fsphil-laptop> these ipads are nothing but trouble :)
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[21:36] <Laurenceb_> http://pastebin.com/JwB1ZZa5
[21:36] <Laurenceb_> thats how much i own
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[21:46] <fsphil-laptop> but close enough :)
[21:47] <Lunar_Lander> :)
[21:47] <Lunar_Lander> fsphil-laptop : help me please
[21:47] <Lunar_Lander> I am dying of laughing
[21:48] <BrainDamage> Laurenceb_: Temp  -17068 quite a chilly room you got there
[21:48] <fsphil-laptop> hmm
[21:48] <Lunar_Lander> there is a fat woman eating whipped cream and wrecking a caravan
[21:48] <Lunar_Lander> XD
[21:49] <fsphil-laptop> ooook
[21:49] <Lunar_Lander> http://www.youtube.com/watch?v=v_cVweFIsQI
[21:49] <Laurenceb_> BrainDamage: raw adc on the itg-3200
[21:49] <Laurenceb_> 23C is from the bmp085 and is correct
[21:53] <Lunar_Lander> fsphil-laptop : how was it?
[21:54] <fsphil-laptop> I decided not to Lunar_Lander :)
[21:55] <NotQuiteSpace> Does anyone know where the Arduino Mega can be bought from in the UK?
[21:55] <Lunar_Lander> XD
[21:56] <Upu> http://www.coolcomponents.co.uk/catalog/product_info.php?cPath=50_74&products_id=587
[21:56] <Upu> NotQuiteSpace
[21:56] <Lunar_Lander> is NotQuiteSpace new?
[21:56] <Lunar_Lander> hi cuddykid Wil5on
[21:56] <Wil5on> hi Lunar_Lander
[21:57] <Lunar_Lander> fsphil-laptop : much better: http://www.youtube.com/watch?v=LBqjLF-z4YM
[21:57] <NotQuiteSpace> sorta new lunar, been on here quite a while ago, but just got back to the project and thanks Upu
[22:00] <Lunar_Lander> ah
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[22:15] <nickolai> hello
[22:16] <fsphil-laptop> hiya nickolai
[22:23] <Lunar_Lander> hi nickolai
[22:23] <Lunar_Lander> how are you?
[22:23] <nickolai> glad to be taking a break, it's been a long day
[22:25] <Lunar_Lander> yeah
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[22:40] <griffonbot> @apexhab: #apexhab Alpha launch video is up. http://t.co/mYBIE3YY #ukhas [http://twitter.com/apexhab/status/128964256992473088]
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[22:50] <Lunar_Lander> gn8
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[22:59] NotQuiteSpace (~NotQuiteS@host86-183-238-245.range86-183.btcentralplus.com) left irc:
[23:04] <griffonbot> @sdh7: RT @apexhab: #apexhab Alpha launch video is up. http://t.co/mYBIE3YY #ukhas [http://twitter.com/sdh7/status/128970272387764224]
[23:12] <fsphil-laptop> interesting launch
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[23:21] <griffonbot> @kylehotchkiss: @apexhab: #apexhab Alpha launch video is up. http://t.co/XyMVdc3i #ukhas this? This is what I want to do with my life. [http://twitter.com/kylehotchkiss/status/128974373028773888]
[23:25] <Darkside> that is a ridiculously long balloon line
[23:25] <Darkside> but seeing what happened on launch, i can see why it was useful
[23:25] <NigeyS> haha yeah it was a tad long
[23:25] <fsphil-laptop> yes, that thing was everywhere but up
[23:25] <fsphil-laptop> it nearly absorbed a few of the team members
[23:26] <Darkside> they couldn't have been able to measure the neck lift accurately
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[23:54] <k5egg> woo
[00:00] --- Wed Oct 26 2011