highaltitude.log.20110905

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[03:16] <nickolai> it's quiet....
[03:18] Action: manderson21 lets loose a stench of epic proportions
[03:18] <manderson21> and it'll stay quiet...
[03:19] <nickolai> what's the command for talking in the third person?
[03:21] <manderson21> type /me BBUUUUUUUURRRRPPPP
[03:21] Action: manderson21 hands out some gas masks
[03:21] Action: nickolai coughs violently, as he struggles to breathe
[03:23] Action: manderson21 checks for poo stains
[03:23] <manderson21> well, there goes another pair :(
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[05:50] <jcoxon> morning
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[06:05] <SamSilver_> Morning
[06:05] <SamSilver_> jcoxon: and hope you have a great flight / float today
[06:06] <jcoxon> thanks SamSilver_
[06:06] <jcoxon> fingers crossed we can get a good range on the signal
[06:07] <jcoxon> bbl
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[06:48] <Darkside> micronut PCBs have arrived!
[06:48] <Darkside> http://rfhead.net/data/MicroNut_PCB.jpg
[06:50] <SamSilver_> stunning
[06:50] <fsphil> oooooooh
[06:50] <fsphil> pretty
[06:50] <SamSilver_> and v1.0 well done
[06:50] <Darkside> no idea if they work yet mind you
[06:50] <Darkside> i'm going to populate one now
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[07:57] <Darkside> http://rfhead.net/data/MicroNut_Hello_World.JPG
[07:57] <Darkside> ohh hell yeahhh
[08:00] <mattltm> Right. Now im getting annoyed!
[08:00] <mattltm> Can anyone give a me a phone make/model that 100% works with AT commands and TEXT mode?
[08:00] <daveake> Not worky?
[08:01] <mattltm> Nope. It reports that it can do text mode but it just wont send :(
[08:01] <mattltm> Sends PDU fine.
[08:01] <daveake> :(
[08:01] <daveake> !!
[08:01] <daveake> I thought it replied that it couldn't do PDU?
[08:02] <mattltm> Nope, I can set it to PDU mode and send a text.
[08:02] <mattltm> If i set it to PDU mode and try and send a TEXT message it fails...
[08:02] <mattltm> I can set it to TEXT mode.
[08:02] <eroomde> nice work darkside
[08:03] <mattltm> If I try and send a PDU in TEXT mode it fails..
[08:03] <SamSilver_> Darkside: what have you mounted to far
[08:03] <mattltm> I can start sending a SMS in TEXT mode, put the number in, get a ">" prompt and put "Hello World" in then I get an Error: 500 when I try to send
[08:04] <daveake> [confused] ... in text mode PDU doesn't apply. So you set text mode, send the command with the number to send to, then send the text, then ESC at the end
[08:04] <daveake> ok
[08:04] <mattltm> Strange Huh?
[08:04] <daveake> Does the number need to be in international format?
[08:04] <number10> I think Tim used a T68i on HoHoHo
[08:05] <mattltm> Tried it from putty and direct from the arduino. Tried the number in both +447790 and 07790 format
[08:05] <Darkside> SamSilver_: atmega, LEDs and PSU
[08:05] <daveake> btw 500 is "An unknown error occurred." :p
[08:05] <Darkside> i'm going to put the GPS on tomorrow i think, since i don't have access to any araldite atm
[08:05] <mattltm> lol, yes its a very helpful; error message!
[08:06] <daveake> Since it does do PDU, and you've got PDU working, why not stick with that?
[08:07] <mattltm> Well I could but I need to send data that changes everytime. I guess that means a lot of messing around encoding data?
[08:07] <daveake> Yes, but I have some code for that ....
[08:07] <mattltm> ohhhhhhh...
[08:08] <mattltm> That would be helpful :)
[08:08] <daveake> Let's see if I can actually find it ...
[08:11] <daveake> http://pastebin.com/SL0jeZDj
[08:12] <daveake> It's PDU-izes a string
[08:12] <mattltm> cool.
[08:13] <daveake> You'll need to build the string with the target phone number and your text, then call this thing
[08:14] <daveake> On checking, my code always sends to the same number so I hard-coded that bit. Here's the entire source, for an Arduino. It happily sends messages via my T39m. http://pastebin.com/XzYKrSFg
[08:14] <daveake> If you use that for testing, please cvhange the target number first! ;)
[08:15] <mattltm> lol. You are a superstar daveake :)
[08:15] <daveake> Don't want random texts landing on my mobile :p
[08:15] <mattltm> Your name is going in the final version :)
[08:15] <mattltm> lol.
[08:15] <daveake> It's only a test program .. don't expect comments or anything :)
[08:16] <mattltm> lol.
[08:16] <mattltm> That has saved me a whole heap of pain!
[08:16] <daveake> Wait till it works before you say that :)
[08:17] <daveake> Anyone here fancy volunterring to upload the XML for my payload please? Pretty please...
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[08:25] <Darkside> AWESOME
[08:25] <Darkside> it just got GPS lock :D
[08:25] <fsphil> jammy :p
[08:25] <daveake> A GPS lock *and* a blue LED. Sorted :)
[08:26] <fsphil> which gps module is it?
[08:26] <Darkside> currently a ublox NEO-5Q
[08:26] <fsphil> oh the blue led is the most important part
[08:26] <Darkside> the 6Q's come in in a week or so
[08:26] <daveake> indeed
[08:26] <fsphil> same footprint?
[08:26] <Darkside> http://rfhead.net/data/Micronut_with_gps.JPG
[08:26] <Darkside> yeah
[08:26] <fsphil> nice
[08:26] <daveake> Buzz1 hasn't got one :-( ... it was just too dim
[08:26] <Darkside> and the Blue LED is powered from one of the atmega pins, so i know that its working
[08:26] <Darkside> (plus it flashes)
[08:26] <daveake> ooer
[08:26] <daveake> :)
[08:27] <fsphil> was it difficult soldering the ublox?
[08:27] <Darkside> alll that board needs now is a few more resistors, a NTX2 (or TX1H) and some glue!
[08:27] <Darkside> nah
[08:27] <Darkside> the module is pretty easy to solder
[08:30] <Darkside> i think i'll put on a few more resistors now, so all i have to do tomorrow is attach a radiometrix module
[08:30] <Darkside> and add some araldite around the gps antenna
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[08:33] <fsphil> after the next launch I'll have to sit and have a big long chat with eagle :)
[08:34] <fsphil> though maybe start with something simpler
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[09:07] <Darkside> http://rfhead.net/data/MicroNut.JPG
[09:07] <Darkside> ok, thats where i'm leaving it...
[09:07] <Darkside> until tomorrow
[09:07] <Darkside> its not getting GPS lock at the moment, and i'm not sure if thats because i dropped it...
[09:08] <Darkside> i need to bring in a USB-UART adapter and check out the raw output from the GPS
[09:09] <Darkside> anyway, i'm off home...
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[09:19] <SamSilver> jcoxon: will you using BST International Standard HAB time (ISH) ? :P
[09:20] <SamSilver> * BST or
[09:20] <jcoxon> yes
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[09:52] <daveake> Can someone upload my payload XML for me, please?
[09:53] <daveake> Don't all volunteer at once .... :)
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[10:07] <LazyLeopard> Hmmm... PICO from autoconfig says shift 350, but email says shift 630...
[10:08] <daveake> I think there's an issue with non-standard shifts. I remember soemthing like that from my launch.
[10:09] <LazyLeopard> It'll be obvious what the shift should be if a signal appears...
[10:09] <daveake> yep
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[10:13] <jcoxon> yeah bigger shift
[10:13] <jcoxon> just how the resistors ended up
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[10:20] <jcoxon> 3rd balloon filled
[10:20] <SpeedEvil> :)
[10:20] <Darkside> ooh a launch
[10:20] <SpeedEvil> Oh - another pico?
[10:20] Action: Darkside gets out the very big yagis
[10:20] <daveake> Don't forget to mount it upside down
[10:20] Action: SpeedEvil gets out the turboencabulator.
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[10:25] <LazyLeopard> Ok. Shift adjusted. ;)
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[10:39] <LazyLeopard> Wind's whistling through the guy-lines here...
[10:40] <jcoxon> yeah its a bit blowy
[10:40] <jcoxon> payload is ready
[10:41] <jcoxon> steve is going ahead towards the coast
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[10:42] <jcoxon> then i'll release the balloon after about 20mins
[10:42] <jcoxon> thats just to improve coverage
[10:43] <SpeedEvil> He can't swim then?
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[10:50] <fsphil> my rig is setup but I'll not bother this time :)
[11:00] <jcoxon> okay steve has set off
[11:00] <jcoxon> launch in 25mins
[11:00] <LazyLeopard> Ok.
[11:00] <LazyLeopard> Thanks.
[11:00] <fsphil> prediction still heading east?
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[11:00] <Dutch-Mill> James I can't stay ;( setting my rig in automode @434.071, good luck
[11:01] <jcoxon> Dutch-Mill, no problem
[11:01] <jcoxon> thanks!
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[11:03] <jcoxon> anyone going to take the lowestoft global tuners?
[11:05] <jcoxon> http://habhub.org/predict/#!/uuid=62932d9ffa134df57f87fe245e2e17c471346fbc
[11:13] <griffonbot> @jamescoxon: #ukhas #hamr #arhab - about to launch PicoAtlas V - balloon flight from UK on 434.071Mhz USB RTTY - http://t.co/FgAAjpz [http://twitter.com/jamescoxon/status/110671818406375424]
[11:13] <G3VZV> jcoxon - I will have a go with global tuner...what is the site address for it?
[11:13] <jcoxon> www.globaltuners.com
[11:13] <jcoxon> you'll need a login
[11:16] <G4FNS> creating account now
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[11:18] <jcoxon> to decode off the globaltuner you'll need to feed back the sound
[11:18] <jcoxon> there are a number of bits of software that can help that
[11:20] <G3VZV> i have logged in to globaltuner but I cannot see a Lowestoft receiver:(
[11:20] <G4FNS> its in kessingland
[11:20] <G3VZV> of course:)
[11:20] <jcoxon> yeah
[11:21] <daveake> Ah, that's why I couldn't find one either :)
[11:21] <Darkside> Randomskk: ping
[11:21] <daveake> lol that the sign-up form has a birth year deafulting to 1800 ...
[11:23] <daveake> Blimey my typing is getting bad
[11:23] <jcoxon> eeek still blowy here
[11:23] <LazyLeopard> very blustery here
[11:23] <jcoxon> okay time for launch
[11:23] <fsphil> you don't want to know what it's like here
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[11:24] <Randomskk> Darkside: pong
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[11:27] <Darkside> Randomskk: reckon it'd be possible to do the pressure calculations within habitat?
[11:27] <Darkside> i.e. i get the calibration values, send down the raw data, and habitat does the calculation?
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[11:29] <Lunar_Lander> hello
[11:29] <Lunar_Lander> important question
[11:29] <Randomskk> it's possible to do pretty much anything inside habitat
[11:29] <Lunar_Lander> does anybody of you have friends in the British army?
[11:29] <Randomskk> but uhm
[11:29] <Randomskk> not sure what the best way would be
[11:29] <Randomskk> depends where the calibration values come from
[11:30] <Randomskk> so actually I do know the best way
[11:30] <Randomskk> a post-filter for your payload
[11:30] <Randomskk> which takes the already-parsed pressure value
[11:30] <Randomskk> and converts it to mbar or whatever
[11:30] <Randomskk> and saves that
[11:30] <Randomskk> then you'd just get one new data key in your messages
[11:30] <Randomskk> lovely
[11:30] <Randomskk> it could either be a hotfix or actual code somewhere, probably in habitat_extensions, which I think would be the nicer way to do it
[11:30] <Randomskk> yea
[11:30] <Randomskk> okay, so that'd be entirely doable
[11:31] <Randomskk> quite easy too
[11:31] <Darkside> Randomskk: also: http://rfhead.net/?p=377
[11:31] <Randomskk> the only question is how we get calibration values
[11:31] <Randomskk> if they can be specified on a per-payload basis it's very easy
[11:31] <Randomskk> if they change during flight, not so much
[11:31] <LazyLeopard> A little movement on the tracker...
[11:32] <Randomskk> (though if they were sent in every telem message it wouldn't be a problem either)
[11:32] <jcoxon> up
[11:33] <Darkside> Randomskk: checked the link? :P
[11:33] <jcoxon> seriously windy
[11:33] <Darkside> http://rfhead.net/?p=377
[11:33] <jcoxon> diffiult to launch
[11:33] <Darkside> ITS ALIIIIVE
[11:33] <Randomskk> what is it? I'm at work
[11:33] <Randomskk> jcoxon: ooh, nice
[11:33] <Darkside> MicroNut
[11:33] <Darkside> Randomskk: the first prototype of MicroNut
[11:33] <Randomskk> oh wow, that was fast
[11:33] <Randomskk> pretty tiny!
[11:33] <Darkside> it was an utter bitch to solder
[11:34] <Darkside> i'm using a microscope for the next one
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[11:34] <LazyLeopard> Partial decodes only here so far...
[11:34] <Randomskk> stereo microscopes make smd soldering so so happy
[11:35] <Darkside> Randomskk: yeah, i'm going to hunt one down in the elec eng department tomorrow
[11:35] <Darkside> there has to be one around somewhere
[11:35] Nick change: shenki_ -> shenki
[11:35] <jcoxon> LazyLeopard, better signal this time?
[11:36] <LazyLeopard> I'm getting digits at least ;)
[11:36] <fsphil> hehe
[11:36] <LazyLeopard> Not quite clean yet...
[11:36] <fsphil> better signal where you are jcoxon?
[11:36] <fsphil> you noticed a problem pretty early on last time
[11:36] <jcoxon> eek
[11:36] <jcoxon> it seems to be floating
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[11:37] <jcoxon> i wonder if thats the wind
[11:37] <LazyLeopard> ...at 440 metres, which will make tracking to any reasonable range... challenging...
[11:37] <Lunar_Lander> hi jcoxon
[11:38] <Lunar_Lander> and hi fsphil
[11:38] <fsphil> wow
[11:38] <fsphil> hiya Lunar_Lander
[11:38] <jcoxon> LazyLeopard, you getting signals?
[11:38] <fsphil> going up again
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[11:39] <fsphil> and down
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[11:39] <fsphil> very down
[11:40] <fsphil> that's odd
[11:41] <LazyLeopard> Floating in a bumpy air-stream?
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[11:42] <LazyLeopard> Nup. Dropped out of sight from here...
[11:42] <TimZaman> jcoxon: whats the status
[11:43] <Lunar_Lander> hi TimZaman
[11:43] <TimZaman> mornin
[11:44] <jcoxon> too low
[11:44] <TimZaman> its over!?
[11:44] <LazyLeopard> It's aloft, but only just...
[11:44] <G3VZV> sadly cannot be heard on the lowestoft receiver
[11:45] <TimZaman> oh i see, oops i was filtering for my own payload :) didnt see pico
[11:45] <LazyLeopard> 434.071.77 on my dial here.
[11:45] <TimZaman> LazyLeopard: whats your callsign
[11:45] <TimZaman> G4FEV?
[11:45] <LazyLeopard> M0LEP
[11:46] <TimZaman> i see
[11:46] <TimZaman> diamond yagi?
[11:46] <LazyLeopard> Yep
[11:46] G4FNS (519c1fb6@gateway/web/freenode/ip.81.156.31.182) joined #highaltitude.
[11:46] <TimZaman> got that one too
[11:47] <TimZaman> hasnt seen any action yet though
[11:47] <G3VZV> just detecting now in Milton keynes
[11:47] <fsphil> going up again
[11:47] <TimZaman> i like the legacy tracker interface more
[11:47] <LazyLeopard> It is climbing again, latest altitude 593
[11:47] <TimZaman> Wow yeah its climbing
[11:48] <TimZaman> what's in it exactly? have a website?
[11:48] <Dave_FEV> Data is just flying in. Much more reliable than the battery saving mode...
[11:49] <G3VZV> shift is around 650Hz
[11:49] <jcoxon> battery dying
[11:49] jcoxon (~jcoxon@94.197.127.215.threembb.co.uk) left irc: Quit: This computer has gone to sleep
[11:50] <G4FNS> nothing here!!
[11:50] <Darkside> woah
[11:50] <Darkside> it just went way up
[11:50] <Darkside> 759m!
[11:50] <TimZaman> wow this is a cool launch
[11:50] <LazyLeopard> Lot of variation on the signal.
[11:51] <LazyLeopard> Getting louder now.
[11:54] <G3VZV> the lowestoft receiver sounds deaf to me!
[11:55] <TimZaman> too bad G8KHW seems afk
[11:56] <TimZaman> goal altitude is 6km?
[11:56] Action: SpeedEvil ponders an ice-cream making payload.
[11:56] <Upu> hi there
[11:57] <Dave_FEV> G3VZV> The Lowestoft receiver uses an Antron 99 antenna. 26 - 28MHz. according to the info page..
[11:58] <G3VZV> yes - I can hear a few bursts of LPD noises but nowt else
[12:01] <TimZaman> it stopped rising it seems
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[12:02] <fsphil> 1.5km nice
[12:03] <fsphil> how's the signal so far?
[12:04] <Darkside> i can't hear it yet :(
[12:05] <fsphil> if I'd been closer you could have used my rig
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[12:07] <TimZaman> Darkside: where are you located
[12:07] <Darkside> australia
[12:07] <Darkside> :P
[12:08] <fsphil> lol
[12:08] <Lunar_Lander> what was the company again that makes yellow breakout boards?
[12:08] <LazyLeopard> Sure struggled to get past the 500 metre mark...
[12:08] <Lunar_Lander> something like dangerous engineering
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[12:09] <Darkside> dangerous prototypes?
[12:09] <Darkside> wait, htllow
[12:09] <Darkside> yellow*
[12:09] <Lunar_Lander> yes
[12:09] <Darkside> yeah, its them
[12:10] <Lunar_Lander> ah thanks
[12:10] <fsphil> slight dip
[12:11] <fsphil> looks like this thing is going to ascent in bursts
[12:11] <TimZaman> oh geez
[12:11] <TimZaman> i hope its not droppping
[12:11] <SpeedEvil> Don't say the b word.
[12:11] <TimZaman> BUUURSt!!!!!!!!
[12:11] <TimZaman> touchdown in southwold
[12:12] <TimZaman> :(
[12:12] <fsphil> hmmm
[12:13] <TimZaman> well the descent rate seems too slow still
[12:13] <fsphil> possibly just one of the balloons has gone
[12:13] <SpeedEvil> Or B)
[12:13] <SpeedEvil> A pigeon is sitting on it.
[12:13] <TimZaman> multiple ballons? anyone has a picture stream
[12:14] <TimZaman> SpeedEvil: maybe an african swallow
[12:14] <G3VZV> it is certainly a very gentle descent
[12:16] <LazyLeopard> four balloons this time?
[12:16] <fsphil> the foil launches are so unpredictable
[12:17] <LazyLeopard> Yeah.... Makes them interesting tracking... ;)
[12:17] Action: SpeedEvil ponders a testing chamber able to pull a modest vacuum on a balloon.
[12:18] <TimZaman> which predictor is this http://www.flickr.com/photos/jcoxon77/5391956109/in/photostream/lightbox/
[12:18] <DanielRichman> that's the hourly predictor
[12:19] <TimZaman> DanielRichman: i should just use the CUSF landing predictor 2.0?
[12:19] <DanielRichman> yeah
[12:20] <TimZaman> descent rate is slowing..?
[12:21] <fsphil> someone who has a 1km mountain nearby could do some real easy foil balloon testing
[12:22] <TimZaman> fsphil: btw where ar eyou located?
[12:22] <TimZaman> northern ireland, or is that an insult?
[12:22] <fsphil> nope, that's exactly it
[12:22] <TimZaman> Good, i had a feeling.
[12:24] <Laurenceb> heh
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[12:24] <Laurenceb> http://static.rcgroups.net/forums/attachments/3/2/4/0/5/7/a4064277-55-uyXlG.jpg
[12:24] <Laurenceb> vrs http://static.rcgroups.net/forums/attachments/3/2/4/0/5/7/a4258531-108-DSCN6474.JPG
[12:25] <fsphil> get struck by lightning?
[12:25] <Upu> having issues with sound card but will try get online shortly
[12:26] <Laurenceb> maybe it was rained on
[12:26] <TimZaman> at least the telemetry seems fine
[12:26] rjmunro (5fb17f7b@gateway/web/freenode/ip.95.177.127.123) joined #highaltitude.
[12:26] <TimZaman> too bad though.
[12:26] <fsphil> on the plus side they might be able to recover this one
[12:27] <LazyLeopard> Dropped out of sight again...
[12:27] <fsphil> falling a lot faster now, another burst maybe
[12:27] <Laurenceb> unless it lands, shakes off the water and takes off
[12:27] <Darkside> oh hey, Norwich
[12:27] <Darkside> i want to win the entire Norwich city council
[12:28] <TimZaman> i think its a full blown burst now
[12:29] <fsphil> yea, something major has happened
[12:29] <TimZaman> its weird because the ascent was kinda slowing.
[12:29] <TimZaman> Any theories of what happened @ 400m?}
[12:29] <SpeedEvil> yow
[12:29] <SpeedEvil> It has fallen off a cliff
[12:29] <SpeedEvil> Very odd.
[12:30] <fsphil> could have been turbulence at 400m
[12:30] <fsphil> well this has certainly been the oddest flight so far :)
[12:30] <SpeedEvil> This almost looks like more than one balloon has burst
[12:30] <Darkside> hmm i'd better get up early tomorrow
[12:30] <Darkside> lots and lots of construction to do...
[12:31] <SpeedEvil> maybe 'creep' failure - with the balloons gradualy delaminating at the seams.
[12:31] <Darkside> :<
[12:31] <SpeedEvil> Darkside: Have fun.
[12:31] <SpeedEvil> Rather than outright popping
[12:31] <Darkside> i want to make quite a few of the micronut payloads
[12:31] <SpeedEvil> So they continue to peel even when not at peak vacuum
[12:31] <fsphil> or, kid with pellet gun
[12:31] <G4FNS> is making cheese, onion and potato pies....any orders gentlemen?
[12:32] <SpeedEvil> Nom.
[12:32] <TimZaman> Darkside: count me in for a sale
[12:32] <fsphil> mmm... drop the onions and you have a deal :)
[12:32] <Darkside> TimZaman: not selling them
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[12:32] <TimZaman> Darkside: count me in for a donation
[12:32] <TimZaman> semantics
[12:32] <Darkside> i'll make that clear: i won't be selling the microNuts
[12:32] <Darkside> i may sell a few uBlox 6 breakouts if i get them made
[12:33] <G4FNS> lets hope they rise more than PICO!
[12:33] <TimZaman> you mean, the breakout=micronut breakout?
[12:33] <Darkside> TimZaman: nah
[12:33] <TimZaman> Darkside: why wouldnt you make a few more of micronut breakouts
[12:33] <Darkside> TimZaman: MicroNut is the flight comptuer
[12:34] <Darkside> i've also mae a breakout board for the uBlox 6 modules, which just breaks it out to a pin header
[12:34] <TimZaman> Darkside: i know. doesnt it have a ublox on it integral?
[12:34] <Darkside> MicroNut does, yes
[12:34] <Darkside> but i'm not selling them
[12:34] <TimZaman> Why not? selling them sounds official.
[12:34] <Darkside> because A) i'd have to make them
[12:35] <Darkside> and B) it makes getting into HABbing too easy
[12:35] <TimZaman> Darkside: is that a problem?
[12:35] <Darkside> yep
[12:35] <TimZaman> why?
[12:35] <Darkside> because all it takes is one person to do something careless and screw it up for the rest of us
[12:37] <TimZaman> Darkside: possibly. But i think buying the balloon and helium and making the externals is already a pretty big step
[12:37] <Darkside> even then, i want people to make their own payloads
[12:37] <TimZaman> Also, you can just buy a "car theft GPRS/GPS module" that texts the position back if you'd want to anyway.
[12:37] <Darkside> i was thinking of selling telemetry payloads, but only to people who had proven that they had build their own first
[12:38] <TimZaman> Darkside: i see. This is not personal right? I have a feeling you are still mad at me for pointing out you have been using the HP board?
[12:38] <WillDuckworth> lol
[12:39] <Darkside> hp board?
[12:39] <Darkside> wha?
[12:39] <fsphil> whoops, just noticed one of my domain had been expired for 4 months. nobody registered it :)
[12:39] <Darkside> TimZaman: haha
[12:39] <Darkside> no, i don't care about that
[12:39] <TimZaman> Darkside: http://www.timzaman.nl/?p=523&lang=en , so can you sell me one now?
[12:39] <Darkside> TimZaman: at the moment, i don't have time to make enough of them to sell
[12:40] <TimZaman> OK. is it opensource?
[12:40] <Darkside> not at the moment
[12:40] <TimZaman> OK.
[12:40] <Darkside> it will be eventually
[12:40] <Darkside> but i'm not sure when at this point
[12:40] <fsphil> hehe- of all my hab flights pictures, the most popular seems to be the trees
[12:40] <TimZaman> :) well i have to admit i agree with you that we shouldnt be making things tooo easy
[12:41] <Darkside> i'd be interested in selling MiniNut or MicroNut as a kit
[12:41] <Darkside> because then whoever buys it would have go go through the pain of SMD soldering
[12:41] <Darkside> and soldering 0603s, and other tiny parts
[12:41] <WillDuckworth> TimZaman - like the stackable idea there
[12:41] <TimZaman> Darkside: there is nothing easier than smd soldering if you have the right tools
[12:41] <TimZaman> WillDuckworth: yeah i wanted to make it very modular
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[12:42] <Darkside> i can think of lots of easier things than smd soldering
[12:42] <Darkside> eating a cupcake, for example
[12:42] <TimZaman> =)
[12:42] <TimZaman> or being nice ;)
[12:42] <Darkside> :-)
[12:42] <TimZaman> Ontopic: what happend to the PICO
[12:42] <fsphil> mmmm cakes
[12:43] <fsphil> I would guess it got introduced to the ground :)
[12:43] <fsphil> hopefully jcoxon or rocketboy are nearby
[12:44] <TimZaman> did jcoxon use the GM862? i saw him using it in his pictures just now
[12:44] <TimZaman> i use it at mine atm
[12:44] <fsphil> the landing area looks like mostly fields, a few trees
[12:44] <fsphil> he has one, dont' think it's been used in a proper flight yet
[12:45] <fsphil> it's for a boat project I think
[12:47] <SpeedEvil> Any later points than the 1500m one?
[12:47] <Lunar_Lander> see you later
[12:49] <mattltm> has it burst?
[12:49] <fsphil> seems to have
[12:49] <fsphil> in a big way
[12:49] <mattltm> :(
[12:50] <SpeedEvil> Well - :) if it's got back
[12:50] <fsphil> there's a road called "The St"
[12:51] <fsphil> probably landed near that
[12:51] <fsphil> then again, foil balloons, it might not have landed at all :)
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[12:52] <SpeedEvil> -4.4m/s is pretty conclusive, unless a goose has actually landed on it
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[12:52] <fsphil> yea
[12:53] <fsphil> a flock of confused bats
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[12:56] Nick change: RocketBoy -> joxon
[12:56] <joxon> eeek
[12:57] <joxon> so its down
[12:57] <joxon> 52.362,+1.5200,177
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[12:58] <fsphil> ah, it got a bit further than I thought it might
[12:59] <fsphil> joxon, recoverable?
[13:01] <joxon> hopefully
[13:01] <joxon> shame though
[13:02] <joxon> we are going to head up there in a bit
[13:02] <fsphil> google maps shows that to be a road with trees on either side
[13:03] <fsphil> well, more a lane than a road
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[13:05] <joxon> the land is a bit lower
[13:05] <joxon> so we reckon t might have travelled on a bit
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[13:07] <LazyLeopard> Ah well... Good luck recovering it...
[13:08] <rjmunro> There seems to be a former airfield that is now a Bernard Matthews factory... http://g.co/maps/nntn
[13:08] <joxon> shame that its come down
[13:08] <joxon> would have been a good flight
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[13:09] <SamSilver> same foil balloons as last time?
[13:09] <joxon> yeah
[13:09] <fsphil> at least you get this one back
[13:09] <fsphil> to fly another time
[13:10] <joxon> hehe
[13:10] <joxon> well we'll go and have a look
[13:11] <SamSilver> are there many tall carbon based structures in the area?
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[13:14] <nickolai> 1 hour till launch....
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[13:32] <TimZaman> nickolai: what launch
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[13:33] <nickolai> mine
[13:34] <nickolai> http://habhub.org/predict/#!/uuid=a246766dc55d3672c5ec7d0243ccce28b00b8a76
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[13:38] <TimZaman> nickolai: christ amerika is big
[13:38] <TimZaman> the usa that is
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[13:39] <fsphil> it certainly is
[13:40] <Darkside> you know what else is big?
[13:41] <fsphil> jupiter?
[13:41] <Darkside> i was going to say your mum
[13:41] <Darkside> but sure
[13:41] <fsphil> lol
[13:42] <TimZaman> not sweet.
[13:42] <TimZaman> my mom is about average
[13:42] <TimZaman> not average american though
[13:43] <fsphil> there are two people on my street that are american-big
[13:43] <fsphil> quite horrible
[13:43] <TimZaman> they're not your parents?
[13:43] <SamSilver> Darkside: your mum is soooo beeg she has to leave the beach so the tide can come in!
[13:43] <fsphil> thankfully no lol
[13:44] <fsphil> no huge people in my family.. yet
[13:48] <mattltm> Why does Bernard Matthews need so many crappy tin shacks?
[13:49] <mattltm> I think he is up to somthing :p
[13:49] <TimZaman> 5kub helium voor E75.. isnt that almost too cheap?
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[14:01] <fsphil> definitely cheap
[14:02] <fsphil> bet you can't buy it though
[14:07] <TimZaman> what do you mean? im picking it up on thursday
[14:08] <fsphil> ah sweet
[14:08] <fsphil> last company I found here that cheap wouldn't sell me it
[14:08] <fsphil> they needed proof that I was a business :)
[14:10] <TimZaman> fsphil: everyone in hollands has or is a business so thats no problem :)
[14:12] <fsphil> hmm.. I should start one .. "high altitude delivery service"
[14:13] <TimZaman> fsphil: you'd be a mobster
[14:13] <number10> you could buy bulk and share with your friends fsphil
[14:15] <TimZaman> number10: wouldnt that be something for randomsolutions
[14:16] <TimZaman> also, i talked to a balloonsalesman the other day, he told me it was difficult to trade in them HAB's because of forms and customs
[14:16] <WillDuckworth> i think rocketboy can supply occasionally
[14:18] <number10> he seems to send up a lot of baloons - so must have a reasonable source - I have not spoken to him though
[14:19] <daveake> I bought mine online and picked it up locally. I took it back with 2 cu m left in it, which in hindsight wasn't a good move! Should have just paid the rental to hang on to it for next time
[14:20] <number10> what was the rental charges daveake?
[14:22] <daveake> Think it was £5- or £7 / month after the first month
[14:24] <fsphil> yea about that
[14:24] <fsphil> I held onto mine
[14:24] <daveake> Oh, £6.64+VAT *per week*. Blimey.
[14:24] <fsphil> has about 2/3 still in it
[14:25] <fsphil> nah, per month
[14:25] <fsphil> for BOC anyway
[14:25] <daveake> Yeah, I had a 5.21 and used about 3
[14:25] <daveake> Since I am a business :-) I'll see if that helps next time
[14:25] <fsphil> muhha
[14:25] <daveake> This was An Air Products cylinder
[14:25] <fsphil> I know a few people who might be able to get me a discount
[14:26] <fsphil> just need to talk nicely to them :)
[14:26] <daveake> :)
[14:27] <daveake> Need to order some next week
[14:28] <daveake> btw I was testing nichrome yesterday to see what current it needs. So I had a taught piece of nicrhome on a power supply, and pulled a piece of nylon cord across it.
[14:28] <daveake> The nylon cut then welded itself back together. Seemed like a magic trick!
[14:29] <fsphil> haha
[14:29] <daveake> Well it kept me amused for a minute or two anyway :)
[14:29] <number10> what V I was it
[14:30] <daveake> Depends on how long it is .... :)
[14:30] <daveake> Also what gauge. In this case about 50mm long, about 4 ohms. Melts (just at 0.5A. 1A makes it glow red
[14:31] <daveake> I have a 5A FET to drive it. That worked fine.
[14:35] <number10> I take it the second time you tried it didnt reseal itself
[14:36] <daveake> It resealed every time at low current.
[14:37] <Hibby> right, who gave Alan Titschmarsh a program on the tellybox?
[14:37] <fsphil> sorry, that might have been me :(
[14:37] <daveake> The cord went 180 degrees around the wire. If the cord was straight I'm sure it would have separated anyway.
[14:38] <Hibby> fsphil: I can't believe you.
[14:39] <daveake> He sells loads of books and is on TV lots. He must be raking it in.
[14:42] <Laurenceb> hes so annoying
[14:42] <number10> daveake: I presume this is for cutdown from the baloon
[14:42] <daveake> number10 Yes, it is.
[14:43] <daveake> It's a light payload with small parachute but a largish balloon - I really don't want the balloon to stay attached.
[14:43] <number10> are you basing the cutdown on time/altitude or a geofence? daveake
[14:43] <daveake> Altitude with a timeout
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[14:44] <daveake> Either 1000m below highest point, or 4 hours after launch (defined as going through the 2000m mark), whichever comes first.
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[14:44] <daveake> jcoxon did you retrieve it?
[14:45] <daveake> gone already !
[14:47] <number10> daveake - not too sure I understand the 2000m mark, Do record the highest altitude and then cutdown if (highest-current_alt) >999m i.e. it has descended 1000m from it highest point?
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[14:49] <daveake> Oh, the 2000m thing is for the timeout. I want the timeout to kick in if the balloon floats for ages. "ages" is currently set to be 4 hours. I want that to start at about launch time, not when I start the payload computer up, so it starts a 40hour time when it ascends through 2000m.
[14:49] <daveake> 4 hour
[14:49] <daveake> Your logic is correct for my height-based cutdown
[14:50] <daveake> It's be better to look at the descent rate, and I may do that if I get some time.
[14:53] <number10> interesting - thanks. Off home now
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[14:53] <fsphil> my payload got to yorkshire in less than 4 hours :)
[14:54] <daveake> Did you have yorkshire-based cutdown logic?
[14:55] <daveake> "eh up pet, time to get down t'ground"
[14:55] <fsphil> t'logic is good
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[14:58] <TimZaman> PD4TA on the move! http://spacenear.us/tracker/legacy.php?filter=PD4TA
[15:00] <fsphil> you're drawing squares?
[15:00] <fsphil> oooh reading battery voltage, that's nice
[15:00] <TimZaman> Yea im running circles like crazy
[15:00] <TimZaman> yep , and sats and temp. the temp is highly unreliable
[15:01] <daveake> Etch-a-sketch-alloon
[15:01] <TimZaman> fsphil: could you be the boss and erase like all pictures but the last 10? its gettin crowded
[15:01] <TimZaman> Also, are you "around" during the weekend, in case things get buggy
[15:02] <fsphil> should be
[15:02] <fsphil> though there'll be a gap for lunch :)
[15:02] <TimZaman> allright i turned it off, it was going to draw a penis.
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[15:05] <TimZaman> how come.. it has no lock for 5 minutes, only time.. then after 5 seconds it has 7 sats..
[15:06] <SamSilver> if you divied a squre in half you get two rectangles
[15:06] <SamSilver> coffee time
[15:06] <SamSilver> brb
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[15:12] <TimZaman> whats the most sattelites anyone had in view during hab?
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[15:18] <fsphil> most people don't record it
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[15:19] <daveake> I did. 11 for mine.
[15:21] <fsphil> 11 for hadie-3 too from the looks of it
[15:22] <fsphil> yea
[15:22] <fsphil> that was an fsa03
[15:22] <daveake> I just opened the GPS log file and searched for ",07," and worked my way up :)
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[15:23] <daveake> That was a Jupiter 11. I doubt I'll use it again as it's quite power-hungry. 100mA roughly, including the active antenna, IIRC. Buzz1 is running at 65mA for everything.
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[15:29] <TimZaman> ideally what should i aim the center of the ntx2 on?
[15:29] <TimZaman> lets say, having it in the middle of fldigi, and settiong the yeasu 817ND on USB
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[15:35] <TimZaman> anyone?
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[15:36] <fsphil> hehe, I was just asked to "dis-enable" something
[15:36] <daveake> I try to get it in the middle roughly, but I can't say I've noticed a difference when it's drifted off to one side or the other
[15:36] <fsphil> TimZaman, 1500 hz
[15:36] <griffonbot> @jamescoxon: Recovered from field #ukhas [http://twitter.com/jamescoxon/status/110738141991804928]
[15:37] <fsphil> the bandwidth is 3000hz so ideally half that
[15:37] <fsphil> (3000hz, minus about 100hz either side)
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[15:43] <TimZaman> fsphil: so but i mean
[15:43] <TimZaman> what to tune it, so that i set the yaesu on 434.XXX mhz?
[15:43] <TimZaman> whoo james has got it
[15:47] <fsphil> you mean tuning the ntx2 itself to a certain frequency?
[15:47] <TimZaman> y
[15:48] <fsphil> Aim as close as possible to the advertised frequency I suppose (USB) .. but, you'll never get it exact. it's a moving target
[15:52] <TimZaman> fsphil: i'd like a feature in ssdv.. using a string as an argument, that is appended after each block..
[15:53] <TimZaman> (my telemetry string)
[15:53] <TimZaman> i can hack the file up in pieces of 256bytes, append it, and paste it together but it might be a useful option
[15:53] <fsphil> you could do that already, if you break up the encoded image into blocks of 256 bytes
[15:54] <fsphil> trouble with sending it in as an option is it'll be the same string every time
[15:55] <TimZaman> very true. but otherwise id have to include a little pause..
[15:55] <W0OTM> Hi
[15:55] Action: TimZaman does not like pauses
[15:55] <fsphil> nah, you wouldn't need to pause
[15:56] <fsphil> evening W0OTM
[15:56] <W0OTM> howdy fsphil
[15:56] <W0OTM> <- working on a second HAB payload
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[15:57] <W0OTM> have to do a "traditional" HAB launch in a month (sponsored event)
[15:57] <W0OTM> all my existing electronics are all mounted in the BallooMerang vehicle :)
[15:59] <fsphil> <- just working ... :)
[16:00] <fsphil> going to do a lightning payload construction tonight, for a talk tomorrow
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[16:14] <TimZaman> fsphil: what do you think, should i include a second of rest or something between the images
[16:15] <TimZaman> and how much rest between the packets?
[16:15] <nickolai89> GPS you win again
[16:16] <TimZaman> nickolai89: try putting the gps straight on the 0th and 1st pin
[16:17] <TimZaman> avoid nss/ss if you can
[16:18] <fsphil> TimZaman, I'm a fan of continuous transmittion
[16:18] <fsphil> there should be enough space in the buffer that you can product and cat a second string before the packet ends
[16:18] <fsphil> produce*
[16:19] <TimZaman> fsphil: oohf allright ill check it out. i dont like cats
[16:19] <fsphil> ruff
[16:19] <fsphil> a cat walked up to my dog yesterday when I was walking it, and sniffed him. the dog just looks at me, in shock :)
[16:20] <TimZaman> haha
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[16:40] <nickolai89> TimZaman, I was obligated to use NSS because of its inverter capability
[16:42] <nickolai89> the GPS I was using is a GARMIN gps 18x-lvc, and it's got some funky stuff with using rs232 logic but tty voltage levels (or is it that other way around?). Anyway, you need an inverter for it, and I just used nss's capability
[16:43] <nickolai89> i had an inventek ism300f2, but it died yesterday. dunno what happened but all of a sudden, after a period of working fine, it could see 2 satellites at best if it saw any at all
[16:45] <nickolai89> btw i had a question for the room. What sort of wind conditions would you find unacceptable to launch in?
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[16:54] <mattltm> ping daveake
[16:57] <daveake> pong
[16:58] <mattltm> I still have issuse :(
[16:58] <daveake> :(
[16:58] <mattltm> spelling being one of them :(
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[16:58] <daveake> I didn't want to mention that ;) Mine has been worse lately
[16:58] <mattltm> lol
[16:59] <mattltm> ***********0025311000C914487058546030000AA - is the stared out part the number to send to?
[17:00] <mattltm> it started 07914 in your code.
[17:00] <daveake> Not that simple :p
[17:00] <mattltm> lol. I guesed not :)
[17:00] <daveake> http://www.dreamfabric.com/sms/
[17:01] <mattltm> lol - that was my next question :)
[17:01] <daveake> Also, this is useful for testing your PDU strings - http://twit88.com/home/utility/sms-pdu-encode-decode
[17:01] <mattltm> Ta :)
[17:01] <daveake> You can see why I don't like PDU ...
[17:02] <daveake> Pretty Damn Ugly
[17:03] <mattltm> Yups. Im just annoyed that this phone supports text mode but I just cant get it so send!
[17:04] <daveake> Indeed
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[17:07] <DanielRichman> mattltm: did you manage to get sending with PDU working?
[17:07] <mattltm> Interesting. It wont make or recive calls now. I'm going with "screwed hardware".
[17:07] <mattltm> DanielRichman: Not yet. I think the mobile may be faulty. Just testing with a diferent phone.
[17:08] <DanielRichman> ... got enough credit?
[17:08] <daveake> Yeah, that one got me once :)
[17:08] <mattltm> lol, yes first thing i checked :)
[17:08] <mattltm> Cool this one sends fine in PDU mode :)
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[17:09] <daveake> Woo :)
[17:09] <mattltm> Just need to work out how to send it my number :)
[17:09] <DanielRichman> the code I sent you has a howto set the phone no in the comments
[17:10] <mattltm> sorry Dan, can you send me the link again please :p
[17:10] <DanielRichman> https://github.com/danielrichman/alien/blob/master/misc-c/arduino-168/at-sms.c
[17:10] <mattltm> ta :)
[17:10] <daveake> Send as a text :p
[17:10] <mattltm> :)
[17:11] <mattltm> just as it gets fun... dinner time :(
[17:11] <mattltm> bbl. Thanks guys :)
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[17:30] <RocketBoy> we got pico-atlas back
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[17:33] <RocketBoy> bbl
[17:34] <NigeyS> how did pico atlas go then ?
[17:36] <TimZaman> NigeyS: bad.
[17:36] <NigeyS> oh dear, explain ?
[17:36] <TimZaman> floated at 500m fot a bit, dropped at 1500 to ground
[17:36] <TimZaman> within 45mins or so all was done
[17:36] <NigeyS> hmm thats odd
[17:36] <TimZaman> then jcoxon picked it up :)
[17:36] <NigeyS> did 1 burst ?
[17:36] <TimZaman> good telemetry though for as far as i saw
[17:36] <TimZaman> at first probably 1
[17:36] <TimZaman> it went down at 0.5ms
[17:37] <TimZaman> then down at 1000m it went down with 4m/s
[17:37] <TimZaman> so that was pretty final
[17:37] <NigeyS> eek
[17:37] <TimZaman> oh well
[17:37] <NigeyS> not what i was expecting to see
[17:39] <TimZaman> nope
[17:39] <TimZaman> i was planning on catching it in holland
[17:39] <TimZaman> has a payload ever been catched?
[17:40] <number10> my brothers boy caught the payload from a rocket launch a few weeks back
[17:44] <TimZaman> yeah okay i can imagine that
[17:45] <DanielRichman> ping natrium42
[17:46] <mattltm> Yay!
[17:46] <mattltm> We have sms working :)
[17:47] <DanielRichman> :D nice mattltm
[17:47] <mattltm> Couldnt have done it without you guys :)
[17:48] <SpeedEvil> Progress on payload?
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[18:32] <TimZaman> fsphil: check your mail for the 1200baud problem i have. it seems i'd be switching to 600
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[18:41] <NigeyS> http://www.bbc.co.uk/news/science-environment-14783135
[18:41] <NigeyS> interesting
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[18:42] <Lunar_Lander> hello
[18:43] <Lunar_Lander> hi rjharrison RocketBoy jonsowman
[18:43] <SpeedEvil> Neat.
[18:43] <Lunar_Lander> hi SpeedEvil
[18:44] <jonsowman> hi Lunar_Lander
[18:45] <Lunar_Lander> how is life and Apex?
[18:47] <jonsowman> not too bad, I'm taking a back seat in that project these days
[18:47] <Lunar_Lander> yeah
[18:47] <jonsowman> yourself?
[18:47] <Lunar_Lander> I am actually looking for someone who knows a person in the British army
[18:47] <Lunar_Lander> and my project is coming along well, thanks
[18:47] <eroomde> the british army is a person?
[18:47] <Lunar_Lander> I have soldered the breakouts for the arduino and then the board by mixio
[18:47] <eroomde> oh i misread
[18:48] <Lunar_Lander> yeah
[18:48] <eroomde> Lunar_Lander: I know a person in the british army
[18:48] <Lunar_Lander> because I heard a song on BFBS that I heard a year or so ago
[18:48] <Lunar_Lander> and I wasn't able to find it
[18:48] <Lunar_Lander> and then it came on BFBS and when I wanted to tape it, they cut to the news
[18:48] <Lunar_Lander> and as I found it, only members of the armed forces can write them e-mails or call them
[18:49] <Lunar_Lander> so I would need a soldier to write them and ask what song was played on 10:58 am, Saturday, September 2 on BFBS Germany
[18:49] <SpeedEvil> no lyrics?
[18:49] <Lunar_Lander> cool eroomde
[18:49] <Lunar_Lander> the only thing I know is that he sings in the chorus something like "When I'm with...Aerosmith!"
[18:49] <SpeedEvil> Lunar_Lander: If it's part of the MOD, you could submit a freedom of information request
[18:50] <Lunar_Lander> but when I google that, I only get Aerosmith songs
[18:50] <Lunar_Lander> ah
[18:50] <eroomde> he's in afghanistan
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[18:50] <Lunar_Lander> yeah
[18:50] <eroomde> not sure i should bother him
[18:50] <Lunar_Lander> oh ok
[18:51] <RocketBoy> NigeyS: you gotta love that black arrow rocket - nice clean hydrogen peroxide burn
[18:51] <Lunar_Lander> yeah, the launch photos are awesome
[18:51] <Lunar_Lander> looks like it hovers above the pad
[18:51] <Lunar_Lander> thanks anyway eroomde
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[18:52] Nick change: daveake_ -> daveake
[18:52] <jcoxon> home
[18:52] <jcoxon> thanks everyone for tracking today
[18:52] <jcoxon> shame the flight was so short
[18:52] <SpeedEvil> Recovered?
[18:52] <jcoxon> yup
[18:54] <SpeedEvil> :)
[18:54] <SpeedEvil> Though not to plan of course.
[18:54] <jcoxon> indeed
[18:54] <SpeedEvil> Had all of them burst?
[18:54] <jcoxon> no
[18:54] <jcoxon> 1 had burst
[18:54] <jcoxon> 2 had punctured on the hedge
[18:55] <jcoxon> and 1 was inflated
[18:55] <SpeedEvil> Punctured at launch?
[18:55] <jcoxon> no
[18:55] <jcoxon> all intact on launch
[18:55] <SpeedEvil> Came down at 4m/s with 3/4 lift?
[18:55] <SpeedEvil> Seems a tad high
[18:56] <jcoxon> was it 4m/s?
[18:56] <jcoxon> SpeedEvil, but its 3/4 lift + the dead weight of 37g for one balloon
[18:57] <SpeedEvil> That's the number I recall. It was going down steeper than it went up.
[18:57] <jcoxon> so you lose 32g of lift + have an addition of 37g of mass
[18:57] <SpeedEvil> hmm
[18:58] <SpeedEvil> Makes sense I suppose
[18:58] <jcoxon> need to analyse the data
[18:59] <SpeedEvil> Thoughts on the wierdness on the way up?
[18:59] <jcoxon> well the card on hte payload looks like it get wet and dried
[18:59] <jcoxon> so perhaps that
[18:59] <jcoxon> it was ridicolously windy
[19:00] <jcoxon> perhaps horizontal force slightly angled to reduce the lift
[19:00] <jcoxon> downdraft perhaps?
[19:00] <RocketBoy> I make the final descent rte a bit over 1m/sec - from 1200m down to 200m in about 12mins
[19:04] <RocketBoy> jcoxon: do you want my radio logs ?
[19:04] <jcoxon> RocketBoy, sure
[19:04] <jcoxon> please email them
[19:04] <RocketBoy> np
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[19:29] <jcoxon> nickolai, launching still?
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[19:36] <Upu> evening jcoxon, sorry I didn't get chance to catch your launch today
[19:36] <Upu> remote rig was playing up
[19:36] <jcoxon> Upu, its okay, didn't go to plan
[19:37] <Upu> yeah I came back from lunch and it was already down
[19:37] <Upu> at least you get another go at it
[19:38] <jcoxon> true
[19:38] <RocketBoy> jcoxon: pm
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[19:59] <natrium42> lol --> http://i.imgur.com/Of4Zs.jpg
[20:08] <Lunar_Lander> hi natrium42 RocketBoy jcoxon Upu
[20:08] <Upu> pew multi hi
[20:08] <Lunar_Lander> xD
[20:09] <daveake> for small values of multi :( ;)
[20:09] <Lunar_Lander> hi daveake fsphil
[20:09] <daveake> :)
[20:09] <Lunar_Lander> xD
[20:09] <Lunar_Lander> today I printed the XKCD comic about the shark tracker balloon and posted it at university
[20:09] <Lunar_Lander> xD
[20:10] <jcoxon> turbulance?
[20:10] <jcoxon> oops
[20:10] <jcoxon> wrong window
[20:10] <Lunar_Lander> I was told however that I glued it in the middle of the area where the beamer is used for presentations and talks
[20:11] <Lunar_Lander> turbulence is interesting anyway jcoxon
[20:13] <jcoxon> indeed
[20:17] <Lunar_Lander> payload motion can be used to measure turbulence
[20:17] <Lunar_Lander> like Giles Harrison of Reading did with his 3D magnetic compass
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[20:19] <RocketBoy> NigeyS: did you ever measure the lift of a fully inflated Quultex 36" ?
[20:20] <NigeyS> i did
[20:20] <NigeyS> 56 - 58 grams
[20:20] <NigeyS> not the 66 stated
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[20:21] <RocketBoy> ok - may be less volume than I think
[20:21] <jcoxon> we could fill one with water
[20:22] <NigeyS> although my fill adapter wasnt the 1 that cut off after it fully inflated, it could be i needed a bit more gas, but as you can see in the video they look pretty well inflated tbh
[20:22] <NigeyS> jcoxon, thats not a bad idea actually
[20:23] <RocketBoy> I doubt that it would survive
[20:23] <NigeyS> possiby
[20:23] <NigeyS> my pcbs arrive thursday, i should have a pico flight ready for the 17th still
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[20:23] <RocketBoy> prehaps if filled on its side
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[20:26] <RocketBoy> 57g of lift would put volume at about 0.09cu m
[20:28] <RocketBoy> but even using that figure I cant see how you get into positive pressure until 2500m given the fill today (which would be about 75% for 0.09cu m)
[20:29] <RocketBoy> yet we gout burst at 1500m - weird
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[20:29] <NigeyS> burst at 1500? :o
[20:29] <NigeyS> you did a full fill ?
[20:29] <RocketBoy> nope
[20:29] <RocketBoy> about 75%
[20:30] <NigeyS> wow, thats weird, picochu didnt burst till 4200 and they were 100% fill :|
[20:30] <RocketBoy> reasonably accuratly measured by weigt
[20:31] <NigeyS> do you want me to re-check max lift steve? i have he and 5 balloons here
[20:31] <RocketBoy> that would be a help
[20:32] <NigeyS> ok, let me finish up this config and ill give it a go for you
[20:32] <RocketBoy> cheers
[20:32] <NigeyS> np
[20:33] <RocketBoy> fill em until just before they get very tight
[20:34] <NigeyS> will do
[20:35] <Lunar_Lander> btw
[20:35] <Lunar_Lander> I weighed my box with the breadboard with all breakouts, arduino uno and mega
[20:35] <Lunar_Lander> 320 g
[20:36] <Lunar_Lander> :)
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[20:47] <NigeyS> RocketBoy, slightly different result, 61gm
[20:47] <NigeyS> maybe a little overfill
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[20:50] <RocketBoy> thanks - well a little variation - but plugging the different numbers in doesn't explain the 1500m burst
[20:51] <NigeyS> maybe a dodgy balloon ?
[20:51] <NigeyS> weak seem..
[20:51] <RocketBoy> but to be honest I cant see why yours didn't burst eariler
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[20:52] <NigeyS> yeah, something doesnt seem right
[20:52] <RocketBoy> somthing screwy with my model
[20:53] <RocketBoy> need to fly a differential pressure sensor or similar
[20:53] <NigeyS> id say this is about 95% full, its tightish in the middle, but the edges has room for more expansion, theyre not to crumpled as you'd expect with 100%
[20:53] <NigeyS> have*
[20:54] <RocketBoy> I know what you mean - but it feels under pressure?
[20:56] <NigeyS> yup, you can definately get a few more grams of lift out of it with a bit more he
[20:59] <RocketBoy> yeah - but thats a bit too complex for my model - I doubt that it would make a great deal of difference to the calculated values
[21:00] <NigeyS> here you go..
[21:00] <NigeyS> http://twitpic.com/6gmbbb
[21:00] <RocketBoy> I'll just model it as a a inelastic envelope
[21:00] <NigeyS> amazing what a tin of pennies and 2p's can help with lol
[21:00] <Lunar_Lander> RocketBoy : you have a computer simulation of a balloon?
[21:01] <RocketBoy> just a spreadsheet
[21:01] <RocketBoy> its on the wiki
[21:01] <Lunar_Lander> ah the excel one, burst3.xls?
[21:01] <Lunar_Lander> that one I know
[21:01] <Lunar_Lander> :)
[21:02] <RocketBoy> this one is for super pressure - its float1b
[21:02] <RocketBoy> .xls
[21:02] <Lunar_Lander> ah OK
[21:02] <Lunar_Lander> that I didn't know
[21:05] <RocketBoy> OK - i'm going to mull it over in my mind - thanks NigeyS
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[21:06] <RocketBoy> bbl
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[22:07] <normalguy> Hello!
[22:08] <Lunar_Lander> hello normalguy
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[22:20] #highaltitude: mode change '+o jonsowman' by ChanServ!ChanServ@services.
[22:20] Topic changed on #highaltitude by jonsowman!jonsowman@kryten.hexoc.com: Welcome to #highaltitude - discuss anything to do with high altitude projects (balloons, gliders, etc) www.ukhas.org.uk
[22:20] #highaltitude: mode change '-o jonsowman' by ChanServ!ChanServ@services.
[22:21] <nickolai89> holy crap, i got 60 visits to my website from all over italy
[22:28] <NigeyS> ello jonsowman
[22:28] <jonsowman> hi NigeyS
[22:29] <jonsowman> hows things
[22:29] <NigeyS> how's tricks >?
[22:29] <NigeyS> heh stressful, but ok :)
[22:29] <jonsowman> yeah fine thanks
[22:29] <NigeyS> ive decided that while sftp is nice and secure, its a complete hell to implement :/
[22:29] <jonsowman> what are you using it for?
[22:30] <jonsowman> i just scp stuff around these days
[22:30] <NigeyS> oh its for the users of a web cluster im setting up, they dont want normal ftp so opted for sftp
[22:31] <jonsowman> fair enough
[22:31] <jonsowman> :)
[22:31] <NigeyS> seems it has a few lacking features, like umask settings!
[22:31] <NigeyS> unless i want to compile openssh from src and implement a patch .. no ta !
[22:31] <jonsowman> haha
[22:31] <jonsowman> no that doesn't sound fun
[22:32] <NigeyS> its more a case of after every update to openssh a new patch has to be written etc, delays updating if theres a critical bug found
[22:32] <jonsowman> yeah
[22:43] <Lunar_Lander> cool nickolai89
[22:43] <nickolai89> i really don't know why though lol. Although now at least there's something interesting to read on the site
[22:43] <Lunar_Lander> yeah
[22:44] <nickolai89> i feel a lot of pressure to clean some things up and make it look nicer now that so many people are looking at it lol
[22:45] <Lunar_Lander> xD
[22:45] <Lunar_Lander> I can understand that
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[22:51] <BrainDamage> NigeyS: or you could submit the patch upstream
[22:51] <BrainDamage> so it gets integrated
[22:51] <NigeyS> there's always that :P
[22:52] <BrainDamage> altrough knowing how much paranoid security guys are ...
[22:52] <NigeyS> heh just a little!
[22:53] <nickolai89> btw, i was wondering if anyone here has any opinions on wind conditions at launch? i.e. how much wind is too much, or is there such a thing?
[22:55] <SpeedEvil> More than 3-4m/s makes it very tricky
[22:56] <SpeedEvil> One truly major issue is that balloons in wind have non-zero lift
[22:56] <SpeedEvil> So it's trivially possible to underfull the balloon enough so that when you release it it goes bouncing along the ground.
[22:56] Nick change: Gillerire_ -> Gillerire
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[23:20] <fsphil> woo, hadie:4 lives
[23:22] <Lunar_Lander> cool!
[23:23] <fsphil> gps is a bit iffy, keeps loosing lock
[23:24] <Lunar_Lander> oh :S
[23:24] <Lunar_Lander> what do you do when there would be no lock?
[23:24] <Lunar_Lander> this seems to happen often
[23:24] <Darkside> on the ground it might happen often
[23:24] <Darkside> in the air, much less so
[23:24] <Lunar_Lander> that is good
[23:24] <fsphil> it just transmits 0.000 0.000, which it really shouldn't actually
[23:25] <Lunar_Lander> I mean I think it was on a Horus flight once IIRC
[23:25] <Lunar_Lander> which I watched on Ustream
[23:25] <Darkside> TinyGPS holds the last known value
[23:25] <Lunar_Lander> and you were in the garage and the problem was the GPS not getting lock
[23:25] <Darkside> i think that was another problem
[23:25] <fsphil> I thought I had too, guess not
[23:25] <Darkside> it eventually got lock
[23:25] <Lunar_Lander> yea
[23:25] <fsphil> this one will be flying with a backup payload
[23:27] <fsphil> better clean up .. polystyrene everywhere
[23:28] <fsphil> oh, must weight it
[23:36] <Darkside> hmm, i'll have to weigh micronut today sometime
[23:36] <Darkside> i've got other stuff i need to get out of the way first though
[23:36] <Darkside> finally got feedback on my research proposal from my supervisor, need to make a few changes
[23:36] <Darkside> (i.e. rewrite a big chunk o fit)
[23:37] <fsphil> sounds like !fun
[23:38] <fsphil> ack, forgot to bring the scales up. ah well, too tired to care :)
[23:42] <fsphil> oooh massive frequency drift
[23:43] <fsphil> ah, battery is dead
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[23:48] <fsphil> and it springs back to life suddenly. don't like that
[23:54] <fsphil> and fading once more
[23:54] <fsphil> very odd
[23:56] <fsphil> will charge the batteries, try again tomorrow
[00:00] --- Tue Sep 6 2011