highaltitude.log.20121023

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[01:01] <heathkid> other options to the Trackuino shield?
[01:06] <heathkid> here in the US...
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[02:09] <heathkid> guess I'm in the wrong time zone for this.... good night
[02:10] <SpeedEvil> night. no idea on the q
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[02:13] <SpeedEvil> http://www.ebay.co.uk/itm/Domnick-Hunter-Hydrogen-Generator-40H-/290794610688?pt=UK_BOI_Medical_Lab_Equipment_Lab_Equipment_ET&hash=item43b4b5a000 heh
[02:25] <heathkid> anyone doing APRS over PSK63 ?
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[02:59] <heathkid> oh well
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[03:11] <meatmanek> heathkid is that a thing?
[03:12] <meatmanek> wouldn't you lose out on the APRS network if you didn't use the standard modulation?
[03:22] <meatmanek> heathkid for APRS I an OpenTracker USB
[03:22] <meatmanek> http://www.argentdata.com/products/otusb.html
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[05:58] Action: tekbwainz morning all
[06:06] <x-f> morning
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[06:12] <tekbwainz> x-f: who are youuuuuuuuu
[06:14] <x-f> tekbwainz, enthusiast of different things
[06:15] <tekbwainz> cool same like me ;D and what does x-f stands for :D
[06:15] <tekbwainz> stand*
[06:17] <x-f> it doesn't mean anything, just three characters, rly
[06:21] <tekbwainz> hehe fair enough :) . what do you do like even i adore doing different things like hacking ( but not that stupid thing like cracking but hacking different difficult tasks :)) i m a programmer :)
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[06:26] <x-f> i'm a webdev in working hours, otherwise i like cycling, also that kind of hacking around, and spaaaaaaaaaaace :)
[06:26] <arko> haxxxx'
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[06:29] <tekbwainz> x-f: like a freelance you mean :) ..
[06:29] <tekbwainz> hehe also you know i like space too :)
[06:30] <tekbwainz> but the tech part :)
[06:31] <x-f> yes, i know where you come from :)
[06:31] <x-f> you're interested in building rockets and that kind of stuff?
[06:35] <tekbwainz> no more liek transmitting devices :D
[06:35] <x-f> ah
[06:35] <tekbwainz> rockets are too mainstream (Rofl)
[06:36] <x-f> that's an interesting part, too
[06:36] <tekbwainz> without transmitting anything i don't find a piece of crap to be useful in any matter ;) just floating around the space ;) .. chilling : ).. watching the game having a bud :D
[06:38] <x-f> i stumbled upon cubesat.org a few days ago and noticed that they use bitrates up to 9600 with just 500 mW
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[06:39] <x-f> but then there are HABs with just 10 mW, that have been successfully received over almost 800 km (50 baud though)
[06:41] <tekbwainz> but cubesat is meant to be into the space whether HAB is HAB :)
[06:43] <x-f> anyway, radios still are a bit voodoo for me
[06:43] <x-f> so, will you launch a HAB first or you're going for your cubesat straight away?
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[06:49] <tekbwainz> cubesat maybe :D
[06:49] <tekbwainz> and first of all it\'s not going to be cube :D
[06:50] <tekbwainz> more like a hexagon sphere :D
[06:51] <tekbwainz> and on every hexagon i will put camera :) so doesn't matter whether it rolls or not :) i will have a view ::)
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[06:54] <x-f> you will need a way to get that view down to earth
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[06:55] <tekbwainz> what do you mean
[06:57] <x-f> there is no point in pictures from space if you can't see them
[06:57] <x-f> i mean the data transmissions
[06:58] <x-f> and there we go to you orbit parameters again :)
[06:58] <x-f> your*
[07:01] <x-f> three weeks of a LEO cubesat RXing - http://lasp.colorado.edu/home/csswe/2012/10/04/on-orbit-week-three-entering-science-mode/
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[07:12] <tekbwainz> i might see it :) later ;) but definitely i will make it transmit :D
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[08:43] <Lucasbuck> morning
[08:46] <fsphil> mornin!
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[09:00] <f6agv> !info
[09:00] <f6agv> hi morning
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[10:25] <kokey> morning
[10:25] <kokey> Lucasbuck: got your max6 talking?
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[10:45] <junderwood> XABEN1 appears to be powered up
[10:46] <junderwood> Payload doc on dl-fldigi doesn't correspond to the launch announcement
[10:46] Nick change: junderwood -> junderwood_M0JCU
[10:51] <junderwood_M0JCU> XABEN3 also transmitting
[10:51] <junderwood_M0JCU> Wow. It's quiet here today
[10:52] <fsphil> weekday :)
[10:53] <junderwood_M0JCU> I'm glad we decided against launching our 3 payloads
[10:54] <fsphil> rubbish predictions?
[10:57] <LazyLeopard> Hmmm...
[10:57] Action: LazyLeopard had seen one cancellation, and forgotten there was more than one launch.
[10:57] <navrac_work> what time is xaben going up?
[10:58] <fsphil> I didn't leave my radio on again
[10:58] <navrac_work> 'about lunchtime' from the mailing list
[11:00] <junderwood_M0JCU> "Time is an illusion. Lunchtime doubly so"
[11:00] <junderwood_M0JCU> (HHGTTG)
[11:03] <fsphil> words to live by
[11:03] <staylo> Isn't the reply 'You should write to a newspaper, they have a section for people like you' ;)
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[11:39] <Laurenceb> fsphil: ping
[11:40] <Laurenceb> how big was .text in your F3Discovery code?
[11:40] <Laurenceb> I've got 21512 bytes
[11:42] <Darkside> heh
[11:42] <Darkside> im hearing poland on 10m
[11:42] <Laurenceb> wow
[11:42] <Darkside> SP7HKK
[11:42] <Darkside> he can't hear me though
[11:42] <kokey> you'll have to email him
[11:42] <Darkside> e's doing 500W into a 8 element yagi
[11:42] <Darkside> i'm doing 100W into a dipole
[11:42] <Darkside> lol
[11:42] <Laurenceb> http://www.youtube.com/watch?feature=player_embedded&v=TvJg6dGMGJA
[11:42] <Laurenceb> ^pole land
[11:44] <Darkside> some german on 28475KHz..
[11:44] <kokey> someone bent the inductor on his CB radio
[11:45] <fsphil> Laurenceb: will check that over lunch
[11:46] <fsphil> I was looking at the code for it this-morning, it all seems pretty simple
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[11:51] <Laurenceb> ok thanks
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[12:08] <Dutch-Mill> Hi All good conditions on 70cm out here!
[12:08] <UpuWork> meh who deleted Pico
[12:10] <fsphil> what are you hearing Dutch-Mill?
[12:10] <fsphil> not I UpuWork
[12:13] <Dutch-Mill> fshil : german repeaters @ 438.550
[12:15] <navrac_work> yep can hear them here in suffolk
[12:15] <navrac_work> i got ok and yah but thats the limit of my german
[12:15] <navrac_work> good clear signal though
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[12:16] <navrac_work> gesuntheid - recognise that
[12:16] <Dutch-Mill> my gannny was German ;-)
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[12:17] <number10> I thought
[12:18] <number10> I ok yah that was posh for "yes" navrac_work
[12:18] <fsphil> typical the good conditions are when I don't have any radio :)
[12:18] <navrac_work> oh - i must be on the sloane square repeater
[12:19] <navrac_work> no wonder i dont understand it
[12:19] <Dutch-Mill> Repeaters in Suffolk ? Frequencys?
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[12:19] <navrac_work> lol - trhere are repeaters - but they are never on as very few people live round here
[12:20] <fsphil> there's a 70cm repeater not far from here if you're optimistic :) 434.375
[12:20] <fsphil> sorry, 433.375
[12:21] <Dutch-Mill> oke ...turn my antenna
[12:21] <navrac_work> http://www.ukrepeater.net/70cm.htm
[12:21] <navrac_work> sadly no ones on any of the sufflok ones atm
[12:22] <WillDuckworth> is the launch still on?
[12:23] <fsphil> be nice to see if someone in germany can receive it, if it is
[12:25] <cuddykid> looks like Worcester area is the UK's secondary HAB hub now :)
[12:25] <cuddykid> after Cambridge
[12:26] <junderwood_M0JCU> cuddykid, PM?
[12:28] <WillDuckworth> it's a good location - further west with reasonable road links
[12:28] <WillDuckworth> not toooooo many aircraft to contend with
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[12:36] <cuddykid> yep :D
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[12:50] <Dutch-Mill> mmmm tracker is alive
[12:50] <junderwood_M0JCU> balloon in the air
[12:50] <sa6bss> It´s up and away :)
[12:50] Action: mfa298 was beaten to it
[12:51] <UpuWork> freq ?
[12:51] <junderwood_M0JCU> dial 434649.73
[12:52] <fsphil> once a week
[12:52] <Lucasbuck> 11:25 < kokey> Lucasbuck: got your max6 talking?
[12:52] <Lucasbuck> yes :)
[12:52] <Lucasbuck> thanks
[12:52] <UpuWork> meh huge QRM up there from my house today
[12:53] <Lucasbuck> need to write some code to filter it all now
[12:53] <Lucasbuck> a friend of mine who used to do satelite programming and stuff like that for cruise ships
[12:53] <UpuWork> whats the other one on daveake ?
[12:53] <Lucasbuck> gave me this amazing url : http://aprs.gids.nl/nmea/
[12:53] <Lucasbuck> that breaks up what all that gps means :)
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[12:54] <daveake> .250 pretty much
[12:54] <daveake> Anyone else seen this - http://imgur.com/tVdR3
[12:54] <daveake> Top one is latest fldigi bottom is from last year
[12:55] <fsphil> could just be your volume
[12:55] <daveake> Same input signal but the new version appears to have the volume turned up, and reports s/n of +23 rather than -2
[12:55] <daveake> Those shots taken at the same time from the same source
[12:55] <fsphil> ah I misread
[12:56] <fsphil> I thought that image was from last year
[12:56] <daveake> As the signal is getting stronger the difference (visually) is less
[12:56] <fsphil> newer one might have an AGC
[12:56] <daveake> It's like the new one has AGC
[12:56] <daveake> snap
[12:57] <junderwood_M0JCU> have you changed the upper signal level and signal range in fldigi?
[12:57] <junderwood_M0JCU> Odd things hapenning with XABEN3
[12:58] <junderwood_M0JCU> ;aEN3,169,12:57:26,52.10441,-2.14791,3320,22.3,696.82,9.0,0.0*0325
[12:58] <UpuWork> why can't I pick XABEN1 in dl-fldigi ?
[12:58] <UpuWork> drop down for payload doens't have anything other than XABEN3 in it
[12:58] <junderwood_M0JCU> keeps missing the $$$$$XAB and replacing it (reliably) with ;aEN
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[12:58] <navrac_work> nice signal - considering its noty meant to be on the horizon yet
[12:59] <UpuWork> looks like XABEN1 isn't a live document
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[13:01] <W0OTM> Hello World
[13:01] <UpuWork> hi W0OTM
[13:03] <UpuWork> got a really strong local FM signal on 650 dead
[13:03] <UpuWork> so can't see the 650 TX
[13:04] <UpuWork> 250 is a great signal though , 434,248,000 here
[13:05] <junderwood_M0JCU> Much stronger signal from 250 than 650
[13:05] <junderwood_M0JCU> 434 248
[13:06] <mattbrejza> i wonder how many people are creative with the power level they set their rfm22b
[13:06] <mattbrejza> 'my coax and antenna is probablyt about 3dB loss, lessput the power to 15dBm to be sure'
[13:06] <Darkside> 14dBm *
[13:06] <UpuWork> ---/\ :)
[13:06] <mattbrejza> im not familiar with what the power settings are :P
[13:07] <daveake> Blimey I got a $$$XABEN3 for a change
[13:07] <junderwood_M0JCU> daveake, on which freq?
[13:08] <daveake> .650
[13:08] <daveake> The other one (XABEN1) is fine
[13:08] <LazyLeopard> Heh. Was listening to some CW and wondeered where the RTTY QRM was coming from. Then realised I'd left the 817 listening on 434.650 ;).
[13:09] <LazyLeopard> .64932 ;)
[13:09] <junderwood_M0JCU> I was getting corruption at the start of about 50% of the Xaben3 strings
[13:09] <Darkside> squelch?
[13:09] <daveake> I get a few bad ones then a few good ones
[13:09] <junderwood_M0JCU> exactly the same here
[13:09] <navrac_work> same here ;aEN3,
[13:09] <junderwood_M0JCU> Software bug
[13:10] <LazyLeopard> It's start-of-string is being decidedly wobbly...
[13:10] <UpuWork> https://dl.dropbox.com/u/63720513/Images/urrg.png <- XABEN3 is under that :/
[13:10] <daveake> The AFC is working fine so it's not that
[13:10] <navrac_work> ooh 2 good strings - filter set to 250hz
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[13:11] <NigelMoby> meh afternoon
[13:11] <LazyLeopard> Argh! Another dl-fldigi crash!
[13:11] <NigelMoby> female driver? :p
[13:12] <navrac_work> oh back to ;aEN3
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[13:13] <LazyLeopard> Current version of dl-fldigi seems to be crash-prone... Third time today, that was.
[13:14] <NigelMoby> eek, what Os?
[13:15] <LazyLeopard> linux
[13:15] <LazyLeopard> ubuntu-flavoured...
[13:20] <kokey> mine crashed a lot when I was sending junk over rtty to it
[13:20] <kokey> I think there's a buffer issue or an issue with high 8 bit chars or something
[13:21] <W0OTM> where can I get the latest ver of DL-FLDIGI?
[13:21] <kokey> is XABEN3 using an rfm22?
[13:21] <UpuWork> wow
[13:22] <vortex_> We've received strings 240-242 from XABEN3
[13:22] <LazyLeopard> ...and 243 is grotty again
[13:22] <daveake> Same here
[13:22] <vortex_> and 244
[13:23] <junderwood_M0JCU> Is everyone getting the same good and bad strings from XABEN3?
[13:23] <vortex_> Bad from 243 to 246
[13:23] <vortex_> and 247.
[13:23] <kokey> does is look like it starts at a slightly lower freq at the beginning of a string?
[13:23] <LazyLeopard> Yeah, I think it's a payload issue. Something makes it go wobbly for a while. Then it straightens out. Then it goes wobbly again...
[13:23] <UpuWork> Check this out : http://i.imgur.com/OhtoD.png note the signal from XABEN3 is between a strong local signal and still decoding
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[13:24] <LazyLeopard> Funny think is, when it's being wobbly, it's only the start of string that seems to get properly mangled. The rest of the string looks clean.
[13:26] <LazyLeopard> Cool Upu ;)
[13:26] <vortex_> The frequency wobbles throughout the string. I think we're missing the first bit because fl-digi has to move the cursors
[13:26] <kokey> you'd thing with multiple dollars it would get stable before the real data
[13:27] <NigelMoby> W0OTM https://github.com/jamescoxon/dl-fldigi
[13:27] <UpuWork> I see XABEN3 doing a few odd lines
[13:27] <UpuWork> ;aEN3
[13:27] <kokey> oh it did ;aEN3 more than once?
[13:27] <UpuWork> yes
[13:27] <junderwood_M0JCU> I think it's transmitting the wrong thing.
[13:28] <vortex_> But if it's a wobbling payload, why do we always get ;#aEN3?
[13:28] <junderwood_M0JCU> We all seem to be decoding ;anE3
[13:28] <vortex_> But if it's a wobbling payload, why do we always get ;aEN3?
[13:28] <LazyLeopard> Yeah. Seeing exactly the same, at the same points, I think, too. There's something up with the payload transmitter.
[13:28] <UpuWork> timing issue ?
[13:28] <daveake> It must be transmitting it
[13:28] <Adam012> What is the baud?
[13:28] <UpuWork> possibly a subtle timing issue
[13:28] <UpuWork> 50 baud
[13:28] <Adam012> Is anyone getting a decodable sentence?
[13:28] <UpuWork> yes
[13:28] <daveake> sometimes
[13:28] <LazyLeopard> Exactly. The wobble is probably voltage-related.
[13:28] <Adam012> 0 or 1?
[13:29] <LazyLeopard> XABEN3 transmits a few good ones, then a few duff ones, then a few good ones.
[13:29] <LazyLeopard> ...and here's the next good one.
[13:29] <vortex_> 265 looks good., 260 to 264 is bad
[13:30] <junderwood_M0JCU> same here
[13:30] <navrac_work> same here
[13:30] <navrac_work> back to bad
[13:31] <LazyLeopard> I think the pattern's pretty consistent. Five bad ones then 4 good ones.
[13:31] <navrac_work> ive tried different shifts, filter settings - no difference
[13:31] <LazyLeopard> My guess is there's something on the payload working to that cycle. ;)
[13:31] <navrac_work> yep
[13:32] <LazyLeopard> Five bad done. Now first of 4 good. ;)
[13:33] <LazyLeopard> Wouldn't mind betting that those bad ones could be turned good by fixing the lead-in characters.
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[13:35] <navrac_work> without a doubt
[13:35] <junderwood_M0JCU> is there any way of getting dlfldigi to print the character codes for non-printable characters?
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[13:41] <Adam012> I can get Xaben 2 without any problems but I get junk for Xaben 1. Does anyone have a frequency recommendation for Xaben 1?
[13:43] <Adam012> 250 is spot on for me (Xaben1)
[13:47] <Adam012> Xaben3 on 434.654
[13:48] <Adam012> I see what you mean about losing the first few characters...
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[13:53] <Adam012> How do I go about uploading decoded strings?
[14:00] <fsphil> if you're using dl-fldigi and are in Online mode then it should be uploading them already
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[14:08] <Adam012> How do I set online mode? I combed the options after you mentioned it but I couldn't find what I was looking for.
[14:08] <daveake> Menu: DL Client --> Online
[14:09] <fsphil> if it's launched in HAB mode it should be online by default anyway
[14:22] <Adam012> Ah, needed an newer version of fldigi. Online now, thank you!
[14:26] <LazyLeopard> Oops
[14:26] <LazyLeopard> That's a burst!
[14:27] <fsphil> 31.6km is still a nice altitude :)
[14:27] <LazyLeopard> Yep ;)
[14:27] <Adam012> What was the balloon?
[14:30] <Adam012> also, although I am in online mode I am not recorded as a tracker on spacenear.us
[14:30] <Adam012> scratch that last part, G0ATY is up there!
[14:31] <fsphil> yea there is sometimes a delay
[14:31] <daveake> Hope it misses the M40 :)
[14:32] <kokey> XABEN3 was using 7n1?
[14:32] <daveake> yes
[14:32] <Adam012> Yes, my first piece of tracking.
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[14:44] <kokey> did the dodgy strings start with ;?
[14:45] <fsphil> yea, ;aEN3,
[14:45] <fsphil> bit shift?
[14:45] <LazyLeopard> dl-fldigi reports them as starting with ;aEN3 but that's probably a "best guess" given stuff with bad parity or other wrongness...
[14:47] <LazyLeopard> Looking at the waterfall, I think the lower frequency is sometimes going high when it should be low.
[14:48] <kokey> fsphil: I'm wondering about that
[14:48] <LazyLeopard> Ho hum. It's toying with that motorway... :/
[14:48] <kokey> $ X ; a E N 3
[14:48] <kokey> 00100101 01011001 00111011 01100001 01000101 01001111 00110011
[14:48] <kokey> $ X A B E N 3
[14:48] <kokey> 00100101 01011001 01000001 01000011 01000101 01001111 00110011
[14:48] <kokey> actually my bytes might be reversed there, and I had added a stop bit at the end
[14:49] <fsphil> you'd need to add the start bit too
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[14:49] <RocketBoy_S2> yo chaps
[14:49] <fsphil> 7n1 will have 9 bits per char
[14:50] <fsphil> evening RocketBoy_S2
[14:50] <number10> :(
[14:50] <RocketBoy_S2> can someone give me a pred landing spot
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[14:50] <RocketBoy_S2> hardly any 3g again
[14:51] <LazyLeopard> Predicted Landing
[14:51] <LazyLeopard> 52.1931, -1.47212 at 15:13 UTC
[14:51] <fsphil> Gaydon
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[14:52] <RocketBoy_S2> cheers
[14:52] <kokey> hmmm
[14:52] <kokey> ; a
[14:52] <kokey> 100111011 101100001
[14:52] <kokey> A B
[14:52] <kokey> 101000001 101000011
[14:53] <fsphil> mostly open area around there
[14:54] <fsphil> apart form the M40
[14:54] <fsphil> well, now that I zoom in I see it's an RAF runway
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[14:55] <fsphil> ah, former RAF base
[14:56] <LazyLeopard> Now a motor racing circuit, it seems.
[14:58] <LazyLeopard> Place they're over at the moment looks like something military, too.
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[14:58] <fsphil> slowly heading south
[14:59] <kokey> interesting place they are flying over... http://en.wikipedia.org/wiki/MoD_Kineton
[14:59] <LazyLeopard> Ah, yes. "Defence Munitions Centre"" ;)
[14:59] <sa6bss> looks like railway tracks
[15:00] <kokey> ah so it's probably jaguar land rover's track and not top gear's
[15:00] <fsphil> predictions seem to have settled on a yard on the west of Gaydon
[15:00] <fsphil> some say
[15:01] <LazyLeopard> Losing signal here now.
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[15:06] <fsphil> predictions are moving south again
[15:06] <fsphil> quickly
[15:06] <junderwood_M0JCU> cleared the motorway :)
[15:07] <fsphil> now if it lands near the B4100 that will be handy
[15:08] <junderwood_M0JCU> signal gone
[15:08] <navrac_work> weird conditions - getting partials still
[15:08] <daveake> gone here too
[15:08] <fsphil> people are reporting all sorts of propagation on 70cm today
[15:09] <staylo> Phew, looks like it's not going to hit Gaydon. Hate crime averted!
[15:09] <fsphil> so it's somewhere south of Gaydon, in a nice big field
[15:09] <Vortex> Last string from XABEN 3: $$$$$XABEN3,557,15:07:04,52.18338,-1.46022,479,16.6,956.34,11.9,0.0*F47D
[15:10] <Vortex> The next partial is all mangled.
[15:12] <junderwood_M0JCU> Looks like I almost got 1096.
[15:12] <junderwood_M0JCU> $$$$$XABEN1,1096,15:07:45,52.18135,-1.46"29,295
[15:13] <LazyLeopard> Oh look... a line of trees...
[15:13] <junderwood_M0JCU> One duff character on longitude and no checksum
[15:13] <junderwood_M0JCU> Trees = payload magnets
[15:13] <junderwood_M0JCU> No. It missed those
[15:14] <junderwood_M0JCU> I bet it's very close to the B4100
[15:15] <junderwood_M0JCU> which is quite a busy road. It's the thinly disguised old A41
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[16:09] <Adam_> hi
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[16:17] <arko> good morning internet
[16:17] <number10> good morning
[16:17] <kokey> I'm guessing it was a timing/baud issue
[16:17] <kokey> if I have to guess
[16:19] <eroomde> arko: yo
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[16:20] <arko> sup erromde
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[17:06] <daveake> I should never tidy stuff up
[17:06] <daveake> Took me ages to find my "dodgy tracker" which was, as expected, in an envelope labelled "dodgy tracker"
[17:07] <daveake> Which in turn was in an unlabelled box of random PIC stuff
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[17:10] <Upu> so you launching it ?
[17:12] <daveake> Yes, not sure when's best
[17:14] <daveake> I'll get the firmware updated now to my latest
[17:18] <Upu> ok
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[17:20] <daveake> What do you reckon - overnight or during the day?
[17:22] <Upu> over night when people are about to track
[17:22] <daveake> ok
[17:39] <number10> daveake: is it a a launch with that foil balloon you filled before hols?
[17:40] <daveake> yep
[17:40] <daveake> Still has 68g lift
[17:40] <number10> thats pretty good
[17:40] <number10> when are you launching - weekend or before?
[17:40] <Upu> about an hour :)
[17:40] <daveake> :)
[17:40] <number10> lol
[17:40] <daveake> Just waiting for a lock
[17:40] <number10> lots of warning
[17:41] <daveake> then Julie's coming home with some food
[17:41] <number10> takes me two days to get the antenna up - (no puns please)
[17:41] <daveake> then I'll solder on some AAs, find some insulation, and off she'll go
[17:41] <number10> have run run prediction
[17:41] <daveake> Takes you all night to do what you used to do all night?
[17:41] <daveake> do run run
[17:41] <number10> see you couldnt resist
[17:42] <daveake> nope
[17:42] <number10> !resist || !predict?
[17:42] <craag> Launch from your back garden?
[17:43] <daveake> Well ... not sure if the wind is quite gentle enough for that
[17:43] <daveake> Could use the village green, but last time I did that didn't go too well
[17:44] <daveake> So normally I launch from the ridgeway. Highest point for miles. Only 1 tree it's even possible to hit.
[17:44] <number10> did you pay that litter fine?
[17:44] <daveake> lol
[17:45] <daveake> Hah http://youtu.be/WbLDOu_54HY?t=3m31s (after the silly advert)
[17:45] <junderwood_M0JCU> Why didn't you announce the flight _before_ I took the antenna down :(
[17:46] <daveake> Wasn't at all sure there would be one
[17:46] <daveake> Still waiting for a lock as it is
[17:46] <daveake> And I was going to launch later this week but Upu has no patience :p
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[17:48] <number10> is that pronunciation correct of your surname
[17:49] <daveake> Yes
[17:49] <daveake> Not often anyone gets it right
[17:49] <number10> well I wasnt sure
[17:49] <number10> I suppose people pronounce it as ack
[17:51] <daveake> Yup. Then when they write it they add the C. This happened on my birth certificate (which I noticed when about 14 and got it changed) and on our marriage certificate (took them 4 attempts to get it right!)
[17:51] <Upu> indirectly fsphil gets a nod as well :)
[17:51] <daveake> Yes I told him :D
[17:52] <daveake> And of course you're in the video :)
[17:52] <Upu> ping costyn_ - your module is all good with a new antenna
[17:52] <Upu> I am :)
[17:59] <costyn_> Upu: thank you very much
[17:59] <costyn_> Upu: please tell me what the shipping costs were, I would like to reimburse you
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[17:59] <costyn_> Upu: you're not going to make any money by being too nice to your customers :)
[17:59] <Lunar_Lander> hello
[17:59] <Upu> I'll sort it tomorrow really no idea how you've managed to break 2 antennas, can't see any physical damage
[17:59] <Upu> anyway they work now
[18:00] <Upu> evening Lunar
[18:01] UpuHome (~Upu@2a00:14f0:e028:0:241f:412e:7598:61d2) joined #highaltitude.
[18:01] <UpuHome> sorry disconnected
[18:01] <Lunar_Lander> no problem
[18:01] <Lunar_Lander> how's life?
[18:02] <Lunar_Lander> I made the cutdown function working with the temperature criteria
[18:03] <UpuHome> fine just cooking !
[18:03] <costyn_> Upu: no I have no idea either. I'm sorry for all the extra work :( :( I certainly didn't throw them across the room or anything like that
[18:03] <fsphil> aaah finally sitting down after a long day
[18:04] <Lunar_Lander> UpuHome, cool, what's for dinner?
[18:04] <Lunar_Lander> I'll have fish I think
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[18:04] Action: costyn_ already had dinner at 18:00, being a good Dutchman and all
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[18:04] <costyn_> (and also young children)
[18:05] <Lunar_Lander> yea
[18:05] <Lunar_Lander> what did you have for dinner?
[18:07] <number10> evening jcoxon, a spur of the moment pico launch maybe from daveake
[18:07] Nick change: KyleYankan -> BoardOfHive76
[18:08] Nick change: BoardOfHive76 -> KyleYankan
[18:08] <costyn_> Lunar_Lander: erm, some pork roulade, spinach a la creme and pureed potatoes
[18:08] Action: daveake is hungry
[18:08] <fsphil> costyn_: you ate young children?
[18:08] <Lunar_Lander> tasty
[18:08] <Lunar_Lander> as I said I'll have fish
[18:09] <Lunar_Lander> or spinach
[18:09] <costyn_> fsphil: yes, they were delicious
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[18:12] Nick change: MrScienceMan -> RG-lz1dev
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[18:18] <fsphil> Laurenceb: .text was 21412
[18:21] <navrac2> aerials still up if anyone launches
[18:22] <LazyLeopard> ;)
[18:22] <number10> you may be required if daveake launches http://ready.arl.noaa.gov/hysplitout/15343_trj001.gif
[18:22] <fsphil> my radio is finally on too :)
[18:22] <LazyLeopard> Any news on recovery (or otherwise) of xaben?
[18:23] <navrac2> yep im up for it - im completely and utterly bored
[18:23] <daveake> Don't think so. No updates on the map, but I'm sure he'll have gotten it back by now
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[18:30] <eroomde> it would be good if your first name was hector
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[18:33] <fsphil> he wouldn't be able to get any notams
[18:35] <daveake> angry hector
[18:51] <junderwood_M0JCU> Ah. Balloon in the air.
[18:51] <junderwood_M0JCU> Does anyone have a frequency?
[18:51] <Lunar_Lander> fish + spinach = tasty!
[18:52] <fsphil> does not compute
[18:52] <bertrik> you guys need someone called kenneth
[18:52] <fsphil> haha
[18:52] <fsphil> he's get tortured here during a launch
[18:52] <fsphil> he'd*
[18:52] <fsphil> is there a launch?
[18:52] <Lunar_Lander> I got my cutdown function to work without delays :)
[18:53] <daveake> Only Upu and myself testing atm ... no actual flights
[18:54] <UpuHome> deleted mine
[18:54] Nick change: UpuHome -> Upu
[18:54] <junderwood_M0JCU> 174m is ground level
[18:54] <junderwood_M0JCU> daveake, did you decide against the launch in the end?
[18:54] <Lunar_Lander> what I planned to do however was to put my data processing functions into an extra arduino tab but that didn't worked
[18:54] <daveake> It is for me. Well 185m I think is
[18:55] Action: fsphil waves from way down at 80m asl
[18:55] <Lunar_Lander> XD
[18:55] <daveake> Well ... not eaten yet but I could launch after. Either that or early tomorrow evening then people have some warning and more time to track
[18:58] Action: navrac2 waves up to fsphil from 58m asl
[18:58] <fsphil> I can barely see you
[18:58] <navrac2> sorry I'm behind that tree
[18:59] <navrac2> well when i say tree , i mean shrub
[18:59] <navrac2> wellwhen i say shrub i mean the unmowed grass
[18:59] <daveake> We want... a shrubbery!
[18:59] Action: bertrik waves from -1.6m or so
[19:00] Action: fsphil sends bertrik a snorkel
[19:00] <Lunar_Lander> bertrik, are you in NL?
[19:00] <bertrik> yes
[19:00] <Lunar_Lander> ah
[19:00] <Lunar_Lander> :)
[19:01] <navrac2> ok bertrik wins
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[19:02] <navrac2> we should have a pico day when we attempt to launch as many picos towards the continent as possible
[19:02] <fsphil> I'd be up for that
[19:02] <daveake> Sounds like a plan to me
[19:02] <fsphil> I'm not sure I could get one to float for long enough, but definitly can try :)
[19:02] <daveake> Lunar can go hunt them all down
[19:02] <Lunar_Lander> XD
[19:03] <navrac2> if we set them off at about the same time they would hit the coast at roughly 2 hour intervals - so there was always something to track
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[19:03] <daveake> We could call it the "Central Europe Campaign" :p
[19:03] <fsphil> P day
[19:04] <number10> the phantom tracker
[19:04] <daveake> OK. I've decided. Pico to launch early tomorrow evening.
[19:04] <navrac2> prize goes to the furthest travelled
[19:05] <navrac2> :-( was looking forward to that, i guess i can wait
[19:05] <Lunar_Lander> you mean like in Gordon-Bennett?
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[19:05] <daveake> Yeah, be patient :)
[19:05] <fsphil> lol
[19:05] <navrac2> patience my @ss - I want to track something
[19:06] <fsphil> track the met office sonde later tonight :)
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[19:06] <navrac2> i think my 30 day trial of the software is up. I think I'd rather spend the money or some more helium
[19:07] <fsphil> there's been a lot of success in floating the foil balloons lately. is it all down to the ascent rate?
[19:07] <navrac2> its hard to say - but largely yes
[19:07] <daveake> Shame they charge for cylinder rental. Otherwise I'd stockpile He and sell next year at a profit :)
[19:08] <Lunar_Lander> I programmed this, like a boss! http://paste.ubuntu.com/1300702/
[19:08] <navrac2> I'm just going to order a party disposable for a few picos. Just boredom fillers for the winter
[19:08] <fsphil> lunar, is that you?
[19:08] <Lunar_Lander> xD why?
[19:08] <RG-lz1dev> daveake: http://www.stb07.com/images/Gas-Stolen.jpg
[19:09] <daveake> lol. not much lift there
[19:09] <number10> wondered where my condom went
[19:09] <RG-lz1dev> you guys
[19:09] <fsphil> you're not normally so confident about your code Lunar_Lander :)
[19:09] <RG-lz1dev> its a giant sausage
[19:09] <navrac2> i wonder how long it would run a camping gas stove
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[19:10] <number10> ah I see its like a weight watchers bratwurst
[19:10] <fsphil> self cooking
[19:10] <fsphil> just add fire
[19:11] <navrac2> maybe we should get oxfam to fund a 3rd world gas compressor project
[19:11] <Lunar_Lander> fsphil, well it works, save for one thing
[19:12] <Lunar_Lander> the red LED lights for about 9 seconds (give or take my error to hit the stopwatch=
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[19:13] <navrac2> where do you set previousmillis
[19:14] <daveake> ^ I wondered that
[19:14] <Lunar_Lander> good question
[19:14] <Lunar_Lander> I took that from the blinkwithoutdelay example
[19:14] <fsphil> won't that flicker the LED really quickly?
[19:14] <fsphil> oh it's an if
[19:14] <Lunar_Lander> yeah I removed these lines
[19:14] <Lunar_Lander> // save the last time you blinked the LED
[19:14] <Lunar_Lander> previousMillis = currentMillis;
[19:16] <navrac2> might be handy....
[19:16] <Lunar_Lander> yea
[19:17] <number10> so if its too hot - you cutdown?
[19:17] <Lunar_Lander> that is just a test condition
[19:17] <Lunar_Lander> I'll replace that with an altitude
[19:17] <Lunar_Lander> but I can't simulate altitude
[19:17] <navrac2> and you are assuming previousmillis is zero the first tiem thru the loop
[19:17] <Lunar_Lander> ah
[19:17] <Lunar_Lander> that is not good
[19:17] <navrac2> depends on the compiler
[19:18] <fsphil> almost certainly not
[19:18] <fsphil> always give it a value
[19:18] <daveake> +1
[19:18] <fsphil> it should actually warn you about that
[19:18] <daveake> Well not necessarily that value :)
[19:18] <fsphil> lol
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[19:19] <navrac2> where was the prevmil=currentmillis?
[19:19] <Lunar_Lander> wasn't defined
[19:20] <navrac2> if you put it in the cutdown fire it will never turn off
[19:21] <navrac2> if you put it in the check it will get reset each time you do the check
[19:22] <Lunar_Lander> ah
[19:23] <navrac2> we could make pico day more exciting by saying that you have to start building your pico at say 10am
[19:23] <navrac2> you are allowed to test your code on the bench on a prototype though
[19:24] <Lunar_Lander> ah like bill brown builds his payloads the hour before launch?
[19:24] <daveake> an hour before the published launch time shirley?
[19:25] <Lunar_Lander> xD
[19:26] <navrac2> probably best to have unlimited buid time so we get some reliability
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[19:28] <fsphil> this is turning into scrapheap challange
[19:28] <navrac2> sounds great to me
[19:28] <fsphil> build the payload from pre-supplied parts, before the setting of the sun!
[19:28] <fsphil> with some tinker time the next morning before launch
[19:28] <navrac2> badge board
[19:30] <navrac2> and extra hab points for the most ridiculous parameter measured
[19:30] <Lunar_Lander> xD
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[19:32] <fsphil> bacon/butty ratio: -1.0
[19:33] <navrac2> race to get a piece of bacon to 15,000 feet
[19:33] <daveake> RGB value of the payload
[19:33] <navrac2> rpm of the payload
[19:34] <navrac2> string tension
[19:34] <daveake> Resonant frequency of the payload cord
[19:34] <navrac2> ooh yes that would be fun
[19:35] <navrac2> best tune played as a preamble - (low set at 1khz)
[19:35] <fsphil> mine would have to be mario
[19:35] <daveake> Has to be the Close Encounters dum de dum de DUMMM
[19:36] <fsphil> dum de dum de (rtty)
[19:36] <navrac2> oh dave - thats - points for too corny
[19:36] <navrac2> ( only because i was thinking of it too)
[19:36] <daveake> :)
[19:36] <fsphil> "we wish you a merry christmas" .. cause that's probably when I'm launching next :)
[19:37] <nigelvh> "The final countdown"
[19:37] <daveake> Do the "Miller Time" adverts have a tune?
[19:37] <navrac2> thomas the tank engine
[19:37] <fsphil> good choice
[19:37] <navrac2> .cant touch this - mc hammer'
[19:38] <nigelvh> The star wars emporer theme
[19:38] <daveake> Stereophonics - A Thousand Trees
[19:38] <navrac2> lol
[19:38] <nigelvh> The star trek opening theme
[19:38] <fsphil> I can see more time being spent on this than making sure the gps works
[19:39] <navrac2> yep - thats the point.
[19:39] <nigelvh> Extra points if you can modulate captain picards voice saying "To boldly go where no one has gone before"
[19:39] <fsphil> "Engage"
[19:39] <nigelvh> Exactly
[19:40] <navrac2> are we allowed to switch to fm between opackets then?
[19:40] <fsphil> oh totally
[19:40] <nigelvh> Or Uhura "Opening hailing frequencies"
[19:40] <fsphil> "To infinity...."
[19:40] <daveake> ^ mine
[19:41] <fsphil> yep
[19:41] <daveake> "Falling with style"
[19:41] <fsphil> "I believe I can fly..."
[19:41] <cuddykid> hiya daveake :) good hols?
[19:41] <fsphil> actually no that's a really annoying song
[19:41] <Lunar_Lander> XD
[19:41] <daveake> yeah, great, thanks
[19:42] <cuddykid> good stuff
[19:42] <nigelvh> I've still got cant touch this in my head from earlier.
[19:42] <fsphil> dum dum dum dum... doooo deee
[19:45] <bertrik> "Hello, HAL. Do you read me, HAL?"
[19:45] <Upu> hey navrac got the mails will have a look shortly
[19:45] <navrac2> 'is there anybody out there' - pink floys
[19:46] <navrac2> upu - might need that for fm from an rfm22b to play music and voice
[19:46] <Lunar_Lander> btw
[19:46] <Lunar_Lander> arduino Due is out!
[19:46] <navrac2> we need rules though - no hydrogen - 3v3 only to level the playing field
[19:46] <Lunar_Lander> :D
[19:46] <daveake> :(
[19:47] <navrac2> ok - no rules or he most
[19:47] <daveake> Though I wouldn't use H2 in a pico :)
[19:47] <fsphil> same size of balloon?
[19:47] <nigelvh> Why no H2?
[19:47] <Upu> I do have some questions but I just need to take a look at another board first
[19:47] <navrac2> the most creative bending of them get more hab points
[19:47] <daveake> 'cos the picos come down with some gas still in them
[19:47] <nigelvh> Ah
[19:47] <Lunar_Lander> arduino.cc/en/Main/ArduinoBoardDue
[19:47] <nigelvh> Just for the picos
[19:47] <navrac2> oh drat fsphil - that was my cheat
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[19:48] <fsphil> lol
[19:48] <navrac2> too heavy for a pico
[19:49] <fsphil> to be honest there's no point in having too many rules
[19:49] <mattbrejza> whats the objective?
[19:49] <fsphil> building a pico is a challange enough :)
[19:50] <navrac2> to get as many balloons over europe at once - who can travel the furthest. Also when one goes out of range another one should come in range. just to have a day madly tracking and racing
[19:51] <fsphil> all launched at the same time
[19:51] <navrac2> it would be good to introduce people to the hobby
[19:51] <mattbrejza> oh ok
[19:52] <fsphil> same time ISH
[19:52] <navrac2> yes i think so - the various geographic locations should give a good spread of times
[19:52] <mattbrejza> foil and latex?
[19:52] <navrac2> yes say 1pm 'hab time' so thats 23 to about 6
[19:52] <mattbrejza> howyee dont do 100g balloons, otherwise could get one of those to float as a pico
[19:53] <navrac2> just foil - lets keep the cost down and helium use down
[19:53] <mattbrejza> well how does a 100g, or even <50g balloon compare?
[19:53] <daveake> hwoyee do do 100g balloons
[19:54] <navrac2> floats much higher so would get different winds
[19:54] <mattbrejza> ok steve doesnt stock them (maybe he should try them out...)
[19:54] <navrac2> he has tried them - just doesnt sell them
[19:54] <mattbrejza> oh i only thought he tried totex ones
[19:54] <navrac2> oh possibly
[19:54] <daveake> I thought they were hwoyee ones
[19:55] <mattbrejza> he doesnt list any
[19:55] <Lunar_Lander> "<sgrace_wrk> I don't know what's more annoying, reading/hearing everyone wanting to know when they can buy an Arduino Due or listening to the Presidential Debates." xD
[19:55] <daveake> No, he's unsure about that
[19:55] <daveake> He does however have lots of them
[19:56] <mattbrejza> just buy a stm32 and be done with it Lunar_Lander ...
[19:56] <mattbrejza> i cant see them on his site, but im fairly sure the ones astra got were through him
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[20:00] <Willdude123> Hi.
[20:00] <fsphil> evening
[20:02] <Willdude123> Getting GPS data to a microcontroller looks hard.
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[20:05] <fsphil> it's not too bad
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[20:08] Nick change: Willdude123_ -> Willdude123
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[20:14] <Upu> ping navrac2
[20:15] <Upu> or ping navrac
[20:16] <Willdude123> Sorry, was that directed at me?
[20:16] <Upu> no navrac :)
[20:17] <Upu> Willdude123 "TinyGPS"
[20:17] <Upu> under examples in Arduino
[20:31] <Willdude123> Does TinyGPS work with uBlox?
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[20:38] <Laurenceb_> sup
[20:38] <adamo> hi
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[20:55] <heathkid> anyone around?
[20:55] <heathkid> I seem to keep missing everyone...
[20:55] <Dan-K2VOL> I'm here heath
[20:55] <Dan-K2VOL> hi
[20:55] <fsphil> if I eat any more jaffa cakes I'll be pretty round
[20:55] <Dan-K2VOL> lol
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[20:55] <arko> we are all here
[20:55] <arko> in spirit
[20:56] Action: fsphil calls the ghostbusters
[20:56] <heathkid> hello everyone
[20:56] <Laurenceb_> fsphil: i fixed the f3 demo code
[20:56] <Laurenceb_> it kind of works now
[20:57] <Laurenceb_> i need a simple way to calibrate the magno tho
[20:57] <fsphil> what's it doing differently now?
[20:57] <Laurenceb_> i removed the crazy ST tilt correct code
[20:57] <Laurenceb_> and rewrote it myself
[20:57] <Laurenceb_> its now sane
[20:58] <RG-lz1dev> https://www.youtube.com/watch?v=4MjuEqaSWmk#t=41
[20:58] <Laurenceb_> Randomskk: ping
[20:59] <Randomskk> hi
[20:59] <Laurenceb_> hi, someone was wondering if you have stm32f4 libs for kicad
[21:00] <Randomskk> hmm
[21:00] <Randomskk> kinda
[21:00] <Randomskk> not exhaustive
[21:00] <Randomskk> https://github.com/adamgreig/wombat/tree/master/pcb/libs
[21:00] <Randomskk> stm32f405rgt6.dcm
[21:00] <Laurenceb_> cool ill link them that
[21:00] <navrac2> pong upu
[21:00] <Randomskk> stm32f405rgt6.lib
[21:00] <Laurenceb_> thanx
[21:00] <Randomskk> those two files
[21:00] <Upu> hi navrac2 1 sec
[21:00] <Randomskk> schematic/pcb footprint
[21:00] <Randomskk> https://github.com/adamgreig/wombat/blob/master/pcb/libs/stm32f405rgt6.lib https://github.com/adamgreig/wombat/blob/master/pcb/libs/stm32f405rgt6.dcm
[21:01] <Randomskk> only any good if they're using the same package though
[21:01] <Laurenceb_> ok
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[21:01] <heathkid> I see everyone using Lithium batteries... why no Li-Poly?
[21:01] <Randomskk> heathkid: for one use things, lithium is a better energy density
[21:01] <Randomskk> they just keeeeeep ooooon goooooing
[21:02] <Randomskk> and generally aren't a huge expensive in a launch
[21:02] <Randomskk> so, worthwhile
[21:02] <heathkid> but not rechargable either
[21:02] <Randomskk> no. but, so
[21:02] <zyp> it's not like you're going to charge it during the launch
[21:02] <heathkid> why not?
[21:02] <zyp> and lipo doesn't work at low temperatures
[21:02] <Randomskk> and at least you know they'll be charged when you open the packet
[21:02] <Randomskk> heathkid: because lithium primaries are higher energy density, like I said
[21:03] <Randomskk> in theory they also have better temperature performance
[21:03] <Randomskk> but mainly, high energy density
[21:03] <heathkid> makes sense
[21:03] <Randomskk> I mean, hey, I use a lipo for wombat and always have done
[21:03] <Randomskk> and it's fine
[21:03] <Randomskk> it lasts for days on that 2Ah lipo
[21:03] <Randomskk> it's great
[21:03] <heathkid> so no reason not to use a lipo?
[21:03] <Randomskk> but most things I launch use lithium primaries
[21:03] <Randomskk> not in particular
[21:04] <Randomskk> no particular reason to use them, either
[21:04] <heathkid> I haven't launched anything yet
[21:04] <heathkid> obviously
[21:04] <heathkid> :)
[21:04] <heathkid> I have lots of questions
[21:04] <Randomskk> having said that I hear some people tell that they might not work in the cold
[21:04] <heathkid> I can test that in one of our sub-zero chambers at work
[21:05] <Randomskk> sounds like a freezer.
[21:05] <Randomskk> I've launched a lipo and it was at -46C and it was fine.
[21:05] <Randomskk> so personally I think it's okay
[21:07] <heathkid> not a freezer
[21:08] <heathkid> I can go down to -55C
[21:08] <heathkid> and have a high-altitude chamber good to 65k feet or better (just replaced the seals)
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[21:15] <Randomskk> nice.
[21:15] <Randomskk> well, for sure test in there ;)
[21:15] <heathkid> I plan to
[21:15] <Randomskk> I also highly recommend the ed moore method of testing where you throw the box down the stairs and everything is still okay
[21:15] <heathkid> I have a shock tester that's good for up to 600G
[21:16] <Randomskk> that's nice
[21:16] <Randomskk> I'd still throw it down the stairs
[21:16] Action: heathkid has access to a lot of goodies at work... :)
[21:16] <heathkid> stairs work too
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[21:22] <SpeedEvil> simple rule
[21:22] <navrac2> lipos just lose a bit of capacity at -40 - but dont charge them after midnight ^h^h sorry below zero
[21:23] <Lunar_Lander> https://www.youtube.com/watch?v=IkTw7J-hGmg
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[21:23] <SpeedEvil> if it accelerates over a meter, and decekkerates over 1mm, then g=1000
[21:25] <navrac2> i always drop mine from a first floor window as a test. I dont mean to but its only place i can get gps lock and i keep letting go of them when i reach round to check the telemetary
[21:25] <navrac2> mirc needs a spell checker
[21:27] <MiniMail> :=)
[21:31] <heathkid> navrac2: sounds like a decent test then
[21:32] <SpeedEvil> Randomskk: -46 internally?
[21:33] <heathkid> how many G's should I plan for my payload for a normal landing?
[21:33] <heathkid> say a 1Kg payload... what size parashoot should I use?
[21:34] <SpeedEvil> 5m/s say
[21:34] <heathkid> ouch
[21:34] <SpeedEvil> then you need to work out the spring constant of your payload...
[21:34] <heathkid> you mean cover it in springs? :P
[21:35] <daveake> 5m/s is a normal landing speed, so it needs to cope with that *at least*
[21:35] <heathkid> or just glue on marshmellows...
[21:35] <heathkid> 5m/s.... got it
[21:36] <SpeedEvil> the spring constant, speed, and velocity tell you the maximum deceleration G
[21:36] <SpeedEvil> however.
[21:37] <SpeedEvil> design for falling from 2.5m
[21:37] <SpeedEvil> and you're at the same speed
[21:37] <heathkid> 16.4042 feet per second
[21:37] <heathkid> that's fast
[21:37] <SpeedEvil> err, no
[21:37] <heathkid> that's 5m/s
[21:38] <SpeedEvil> 1.25m
[21:38] <SpeedEvil> not 2!5
[21:39] Action: heathkid is confused
[21:39] <heathkid> design for 1.25m/s impact?
[21:39] <daveake> I told you. 5 metres per second#
[21:39] <Randomskk> SpeedEvil: "internally"
[21:40] <Randomskk> there wasn't really a clear.. distinction
[21:40] <daveake> *Minimum*
[21:40] <heathkid> then that's 16.4042 feet per second (here in the US)
[21:40] <SpeedEvil> :-)
[21:40] <SpeedEvil> heathkid: no
[21:40] <heathkid> no wonder we keep burning crap up trying to land on Mars! :)
[21:40] <daveake> It's not uncommon for payloads land at twice that speed
[21:41] <SpeedEvil> heathkid: drop it fro. 1.25m - 4 feet, and it hits at 5m/s
[21:41] <heathkid> onto what kind of surface?
[21:41] <daveake> Well, what kind of surface will it land on after its flight?
[21:42] <daveake> Could be anything. So drop it onto concrete just in case.
[21:42] <heathkid> probably not 6" of plate steel
[21:43] <heathkid> so a 49" drop (roughly)
[21:43] <heathkid> I can use our drop tester for that
[21:43] <heathkid> on all axis
[21:43] <heathkid> and corners
[21:43] <heathkid> faces, edges, and corners
[21:44] <heathkid> a series of drops from (let's round up)... 50"
[21:44] <Laurenceb_> http://bin.jvnv.net/f/mu3oa.JPG
[21:48] <SpeedEvil> devboard army
[21:48] <heathkid> lol
[21:48] <heathkid> I never thought of lining them all up and taking a photo like that
[21:49] <Laurenceb_> those are from zyp
[21:49] <Laurenceb_> almost a full collection
[21:49] <heathkid> where's the freescale FRDM stuff?
[21:49] <Laurenceb_> ive not got that many yet
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[21:55] <heathkid> fyi... SpeedEvil, you mentioned 1,000G... our tester may only do up to 600G but tha'ts a 2,000 lb. (907.1847kg) payload at 600G...
[21:56] <heathkid> half-sine shock pulse
[21:56] <heathkid> at 300G half-sine shock... not many electronics survive...
[21:57] <heathkid> the surface mount caps are usually the first to go
[21:58] <heathkid> electrolytics
[21:58] <heathkid> USB and Ethernet connectors
[21:59] <heathkid> anything fairly large and surface mount won't do
[21:59] <SpeedEvil> yeah. a thick layer of PS helps lords
[21:59] <SpeedEvil> lots
[21:59] <heathkid> and go old school on the bigger parts... thru-hole
[22:00] <heathkid> the tiny 0402 resistors don't care
[22:00] <heathkid> the PCB breaks before they come loose
[22:01] <heathkid> yes, I work in a failure analysis lab
[22:01] <heathkid> payload testing for hire! lol
[22:01] <heathkid> if we can't kill it... you're good to go! :P
[22:03] <heathkid> and if we do kill it... we can tell you what failed and why...
[22:03] Action: Laurenceb_ passes around sledge hammers
[22:03] <heathkid> lol
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[22:04] <heathkid> oh, I have fun and enjoy most of what I do... glad the tool I have at work will come in handy testing future payloads so I know they are good to fly.
[22:04] <heathkid> tools
[22:06] <heathkid> I'd have to pull a LOT of strings to get access to our 18-meter dish for tracking though...
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[22:07] <SpeedEvil> :-)
[22:07] <SpeedEvil> video would be almost easy
[22:07] <heathkid> what do you think it's for?
[22:07] <heathkid> :)
[22:08] <heathkid> then there is another alternative to video... let me think about it a bit though
[22:09] <heathkid> first step... launch a few mylars (like PICO) with a very small payload...
[22:10] <Laurenceb_> someone should try characterising mylar envelopes
[22:10] <Laurenceb_> use a diaphragm pump to pump one up to 2psi or something
[22:10] <heathkid> I was thinking party balloons... but why not envelopes?
[22:10] <Laurenceb_> and leave it for a few days
[22:11] <Laurenceb_> party balloons wont superpressurize
[22:11] <heathkid> helium or hydrogen?
[22:11] <SpeedEvil> Laurenceb: I suspect they will
[22:11] <Laurenceb_> very slightly
[22:11] <heathkid> "PICO" was 5 party balloons
[22:11] <SpeedEvil> Laurenceb: in lieu of someone doing overpressure measurements at almost float, ...
[22:12] <SpeedEvil> for normal large ones
[22:12] <SpeedEvil> party might be interesting
[22:12] <Laurenceb_> maybe...
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[22:13] <Laurenceb_> aiui noone has made a mylar superpressureize for >24hours
[22:14] Action: SpeedEvil looks at his roll of aluminium foil again.
[22:14] <mrShrimp_> Upu are you here?
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[22:17] <heathkid> I've got a 50 ft. roll of 3 ft. wide mylar... *hmmmm*
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[22:18] <heathkid> was going to build my own grow tent for chile peppers but ended up just buying one instead.
[22:18] <heathkid> yes, chile peppers... I promise.
[22:19] <heathkid> #chilepepper if you don't believe me
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[22:50] <heathkid> anyone here (in the US) using APRS?
[22:50] <arko> yes
[22:50] <heathkid> how?
[22:50] <arko> with a radio?
[22:50] <heathkid> I'd like a small transmitter board but want to use my own GPS module
[22:51] <arko> what reads the chip and builds the string?
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[22:51] <heathkid> arduino compatible would be a plus
[22:51] <arko> there are also these http://www.byonics.com/microtrak/
[22:51] <heathkid> been looking at those
[22:51] <arko> you could just replace that pic
[22:51] <heathkid> ever used one?
[22:51] <arko> with say a 328
[22:52] <arko> yeah i used one
[22:52] <arko> they work fine, jsut cost too much
[22:52] <heathkid> better (cheaper) options?
[22:52] <arko> its in my bookmark collection at home
[22:52] <arko> i'll post some
[22:52] <heathkid> ok
[22:52] <heathkid> thanks
[22:52] <arko> im sure people here have better ther
[22:52] <arko> e
[22:52] <arko> though*
[22:54] <fsphil> you could build one pretty easily. atmega driving an hx1
[22:54] <arko> right
[22:54] <arko> it's cake
[22:55] <arko> then some serial gps
[22:55] <fsphil> the weirdest part is aprs itself
[22:55] <arko> it's all kinds of weird
[22:56] <arko> ancient system
[23:00] <Randomskk> http://blog.hartleybrody.com/in-space/ sigh
[23:00] <arko> woah someone launched today?
[23:00] <fsphil> steve did yea
[23:01] <fsphil> haha
[23:01] <arko> lol Stratford-upon-avon
[23:01] <arko> shakespear town
[23:01] <fsphil> it's like he avoided googling anything related to hab at all
[23:02] <arko> sounds like a fairy tail land when you hear of it in the us
[23:02] <fsphil> there's a lot of upon-avon's in england
[23:03] <fsphil> not sure who avon is
[23:03] <fsphil> but they've got a lot of stuff upon them
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[23:07] <fsphil> ah Avon is an old word for River
[23:07] <fsphil> that makes more sense now
[23:08] <arko> http://i.imgur.com/1LlNY.gif
[23:08] <fsphil> haha
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[23:24] <Lunar_Lander> Randomskk, you are quite into the spacenear system, right?
[23:25] <Randomskk> I guess, yes
[23:25] <Lunar_Lander> can you like have text in a string that can be displayed on the website or only numbers?
[23:25] <Randomskk> text is fine too
[23:26] <Lunar_Lander> ah, thanks
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[00:00] --- Wed Oct 24 2012