[00:03] <jonsowman> alright hibby, around?
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[00:12] <hibby> aye
[00:12] <hibby> was "Busy" playing video games
[00:12] <jonsowman> haha
[00:12] <jonsowman> will do that xml for you
[00:12] <hibby> oh, cheers
[00:13] <hibby> wanting any other info?
[00:13] <jonsowman> frequency, baud
[00:13] <hibby> ah, of course, the obvious things I forgot.
[00:14] <jonsowman> stop bits, shift, bits per char
[00:14] <hibby> same as all the other SUNSET launches... lemme check the code to be sure
[00:14] <hibby> 100 baud, 7n2, 600 shift
[00:15] <hibby> this is the last of ours for this academic year, so you can remove those three afterwards to keep life easier and tidier
[00:15] <jonsowman> alright
[00:15] <jonsowman> :)
[00:15] <jonsowman> frequency?
[00:16] <hibby> 434.651
[00:16] <jonsowman> okay, done
[00:16] <hibby> ntx2, the classic module
[00:16] <hibby> cheers
[00:16] <jonsowman> no worries
[00:17] <jonsowman> I'll be around on #highaltitude so give me a shout if anything's wrong
[00:17] <hibby> col
[00:17] <hibby> **cool.
[00:18] <hibby> Writing up all my handover stuff, I'll ensure UKHAS is prominently mentioned as an essential resource ;)
[00:19] <hibby> likely get all this stuff on the wiki too
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[01:00] <Darkside> fsphil: ping
[01:01] <Darkside> ok nvm
[01:01] <Darkside> cant seem to use hamlib on OSX
[01:02] <Darkside> i'm guessing libusb problems
[01:02] <Darkside> IO errors when opening the device
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[01:03] <Darkside> bah, i need to do hax to make it work
[01:03] <Darkside> it talks about it here: http://drm.sourceforge.net/installationmac.html
[01:04] <Darkside> checking for LIBUSB... yes
[01:04] <Darkside> checking usb.h usability... yes
[01:04] <Darkside> checking usb.h presence... no
[01:04] <Darkside> aww come on
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[02:40] <SpeedEvil> 'element 14 is giving away stuff to hackerspaces'
[02:41] <SpeedEvil> (on another channel - not chasing it up as now going to sleep.
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[05:46] <Upu> morning
[05:52] <SamSilver> Upu morning
[05:52] <Upu> hi there
[05:52] <Upu> so whats launching today ?
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[05:53] <SamSilver> I am not up to speed, but I know of none planned
[05:54] <Upu> think Hibby is launching ?
[05:56] <SamSilver> hibby had insurence issues last time, I am soooo ready for a bit of excitment
[05:56] <SamSilver> PBH !!
[05:57] <SamSilver> PBH are planning a launch today
[05:58] <SamSilver> and these folk > http://thetalon.smugmug.com/Misc/Space/Setup/16335934_mfBjx#1228005805_kkHJK
[05:58] <Upu> apparently they have insurance now
[05:59] <SamSilver> well then lets do launch!
[05:59] <Upu> just no idea what frequency it works on
[05:59] <Upu> going to be operating remotely just hope the serial cable doesn't pack in
[06:00] <SamSilver> radios at home and you at work?
[06:00] <Upu> yeah
[06:00] <Upu> got it all setup last night
[06:01] <SamSilver> green me
[06:01] <Upu> ?
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[06:02] <SamSilver> jellouse
[06:02] <SamSilver> green with envy
[06:02] <Upu> oh :)
[06:03] <SamSilver> Have radio lic and no equipment.
[06:03] <Upu> need to get yourself some kit!
[06:04] <SamSilver> I am window shopping at the mo
[06:04] <SamSilver> only got it for HAB
[06:04] <SamSilver> won't be chewwing the rag
[06:05] <Upu> http://cgi.ebay.co.uk/Yaesu-FT-897-/140536897417?pt=UK_ConsumerElectronics_SpecialistRadioEquipment_SM&hash=item20b8a6df89#ht_500wt_1156
[06:10] <SamSilver> first will be dedicated note book / ipad with UI-View & a 70cm yagi and raido for aprs tracking
[06:10] <SamSilver> mobile
[06:14] <Upu> ok fair enough, right I'm off to work hopefully when the bearded one decides to wake up my kit will still be working
[06:14] <Upu> laters
[06:15] <SamSilver> have fun
[06:16] <fsphil> looks like it's ~434.650
[06:17] <fsphil> ooh PHB has been delayed until next week
[06:17] <fsphil> I think .. funky US time format: 4/27-4/29
[06:18] <SamSilver> PBH postponed till 27 april
[06:20] <SamSilver> star wars type of timedate
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[06:21] <jcoxon> pbh postponed
[06:21] <jcoxon> :-(
[06:21] <SamSilver> morn jcoxon
[06:22] <SamSilver> yes until 4/27-4/29 star wars log date
[06:23] <jcoxon> i was relying on a launch today
[06:23] <SamSilver> hibby?
[06:24] <SamSilver> Upu has his radio set up for remote tracking today
[06:24] <eroomde> morning
[06:25] <jcoxon> SamSilver, oh i'm switch shift patterns onto nights tomorrow
[06:25] <jcoxon> so planned to stay up all night tonight
[06:25] <jcoxon> pbh would keep me awake
[06:25] <jcoxon> morning eroomde
[06:26] <eroomde> all happy this morning?
[06:26] <jcoxon> yup
[06:26] <jcoxon> :-)
[06:28] <jcoxon> you?
[06:28] <eroomde> yeah not bad
[06:28] <eroomde> bit foggy
[06:28] <eroomde> had a big dinner with the european project partners last night
[06:28] <jcoxon> oo cool
[06:29] <jcoxon> pay day!
[06:29] <fsphil> noticed someone on the gpsl list asking if PBH will be on spacenear.us :)
[06:29] <jcoxon> i replied
[06:29] <fsphil> ooh I didn't get that
[06:29] <fsphil> directly?
[06:30] <jcoxon> nah to GPSL
[06:30] <jcoxon> might have got lost
[06:30] <eroomde> daily digest?
[06:30] <eroomde> yeah it must be pay day for me too soon, I hope
[06:30] <eroomde> that would be yummy
[06:32] <jcoxon> it does help ease the pain
[06:34] <eroomde> I don't get ash cash either
[06:35] <jcoxon> hehe i won't get any more
[06:35] <jcoxon> done my stint
[06:36] <SamSilver> afk
[06:47] Action: jcoxon has gone through another episode of wanting an ipad, realising its completely useless and emerged out the otherside with out spending 399 - phew
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[06:49] <eroomde> jcoxon: yes i do exactly this
[06:49] <eroomde> my housemate has one and is using it now
[06:50] <eroomde> but it seems like a purely consuming device
[06:50] <jcoxon> it is completely useless to me
[06:50] <eroomde> so doesn't qualify as 'tool', so doesn't qualify for budget
[06:50] <jcoxon> but it is awesome at the same time :-D
[06:51] <Upu> doesn't like being accessed via RDP
[06:51] <eroomde> if an external bluetooth keyboard and good shell app came together to give a remote working workflow (vim on my home machine, say) then I could be tempted
[06:51] <jcoxon> eroomde, i think i'd just wait - add up each episode of i want it and then get an macbook air
[06:51] <jcoxon> :-)
[06:52] <Upu> odd sound cards go AWOL when you use RDP in
[06:52] <eroomde> jcoxon: probably the better set up yet
[06:52] <eroomde> Randomskk has an air
[06:52] <eroomde> it is rather nice
[06:53] <eroomde> ssd is the single greatestest thing you can put in a computer, I think
[06:53] <jcoxon> my macbook is till working - got some big chips in the case :-D
[06:54] <jcoxon> don't need any more processing power
[06:54] <eroomde> hab induced?
[06:54] <jcoxon> oh yes
[06:54] <eroomde> my macbook pro i got before starting at cam
[06:54] <eroomde> 5 years ago
[06:54] <eroomde> she's still fine, though the hdd is a bit full and slow
[06:54] <jcoxon> they were built to last
[06:54] <eroomde> i upped her ram to 4GB a couple of years ago, that's been the only change
[06:54] <Upu> I agree the SSD i this PC goes like stink
[06:54] <fsphil> Upu, there's an option in rdp for remote/local sound -- does that make a difference?
[06:55] <eroomde> jcoxon: but i think i'm going to build a pc now
[06:55] <Upu> yeah fiddling, seems when you RDP in the "hardware" switches which breaks fldigi
[06:55] <eroomde> laptops are no good for my back and neck
[06:55] <fsphil> also ssd++ :) I've a slow one, and it's still silly fast
[06:55] <Upu> I can hear music now will try it again
[06:55] <jcoxon> Upu, do you want my php code for web based dl-fldigi?
[06:55] <Upu> does it run under windows ?
[06:55] <eroomde> Upu: are you wanting to stream hab audio over the network?
[06:55] <jcoxon> its just php
[06:55] <Upu> sure
[06:56] <jcoxon> but
[06:56] <Upu> just trying to run dl-fldigi remotely via RDP
[06:56] <jcoxon> rig control is via hamlib
[06:56] <eroomde> cool
[06:56] <Upu> yeah thats working
[06:56] <jcoxon> but commandline hamlib :-)
[06:56] <jcoxon> i haven't yet hacked it into dl-fldigi
[06:56] <Upu> but when I remote in there is nothing under audio devices
[06:56] <jcoxon> hold on let me grab what i have
[06:57] <Upu> I have a plan..
[06:57] <eroomde> oh dear
[06:58] Action: fsphil runs
[06:58] <Upu> :)
[07:01] <Upu> hmm think that's working
[07:02] <Upu> leave sound on remote and use the /admin switch on mstsc however I can't hear it now but I can see water fall
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[07:03] <Upu> so no launch today after all that ? :)
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[07:17] <jcoxon> Upu, no launch?
[07:22] <Upu> err
[07:23] <Upu> [07:21] <jcoxon> pbh postponed ?
[07:23] <jcoxon> oh ye
[07:23] <jcoxon> s
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[07:23] <jcoxon> but hibby's launch isn't
[07:23] <Upu> Oh
[07:23] <eroomde> what time is Hibby's?
[07:23] <Upu> so bloody many these days I get confused :)
[07:23] <Upu> right configured for Skypod
[07:23] <jcoxon> Upu, https://github.com/jamescoxon/dl-fldigi-XMLRPC
[07:23] <jcoxon> 11 am i think
[07:23] <eroomde> i know, i can't keep up
[07:23] <Upu> thx I'll try that when I ge thome
[07:24] <eroomde> we should have a ukhas google calendar
[07:24] <eroomde> maybe we already do
[07:24] <Upu> so Hibby is on 434.650 ?
[07:25] <fsphil> It's not actually spypod
[07:25] <fsphil> It's Fusen
[07:25] <Upu> yeah he said it might be another payload, do we know which..
[07:25] <Upu> thank you
[07:26] <Upu> and frequency ?
[07:26] <fsphil> (coincidently "fusen" was the first name for hadie :)
[07:26] <fsphil> ~434.650
[07:26] <Upu> ta
[07:26] <fsphil> well I hope so, cause I left my own payload on at 434.075
[07:27] <Upu> well hopefully thats the radio retuned
[07:28] <Upu> yup
[07:28] <Upu> right I'll go make a brew then bbs
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[08:11] Action: Upu pokes hibby
[08:13] <SamSilver> * pokes hiddy
[08:13] <SamSilver> lets do launch!
[08:14] Action: fsphil fires a paper plane at hibby
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[08:20] <SamSilver> * takes his dyslexic pill
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[08:29] <GW8RAK> Is it worth my while taking an early lunch, I wonder?
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[08:30] <SamSilver> lunch or launch?
[08:30] <GW8RAK> :)
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[08:30] <GW8RAK> Not early lunch just yet, perhaps about 11'ish
[08:31] <SamSilver> hibby is doing launch @ 1100bst
[08:31] <Upu> cool
[08:32] <SamSilver> 434.650
[08:32] <SamSilver> I think
[08:33] <Upu> Yep I'm tuned in
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[08:40] <hibby> thats the guys just arriving at the launch site now, so it looks to be a good situation
[08:40] <Upu> morning hibby
[08:41] <hibby> hola
[08:41] <Upu> Fusen 434.650 USB ?
[08:41] <hibby> there or thereabouts
[08:41] <Upu> great ok we'll I'm online
[08:41] Nick change: Upu -> Upu_2E0UPU
[08:44] <fsphil> hehe, engage HAM mode
[08:45] <Upu_2E0UPU> what talk crap for an hour about kippers and Honda Jazz wing mirrors ?
[08:47] <fsphil> lol
[08:47] <fsphil> I had the farmers back on 2m ssb yesterday, talking about geeps
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[08:48] <fsphil> what's the prediction for Fusen?
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[08:52] <DanielRichman> where's the launch from?
[08:52] <NigelMoby> Morning
[08:52] <Upu_2E0UPU> Scotland ?
[08:52] <Upu_2E0UPU> morning Nigel
[08:53] <Upu_2E0UPU> Might be Keswick not sure
[08:53] <Upu_2E0UPU> hibby ?
[08:54] <NigelMoby> Picochu doesn't like rtty :(
[08:55] Topic changed on #highaltitude by ChanServ!ChanServ@services.: Welcome to #highaltitude - discuss anything to do with high altitude projects (balloons, gliders, etc) www.ukhas.org.uk - FUSEN launch 21/4 11:00 BST (Strathclyde Uni)
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[08:56] <GM3VZV> hibby: any news on your launch this morning? What freqeuncy/tx details???
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[09:01] <Upu_2E0UPU> Fusen 434.650 USB
[09:03] <NigelMoby> Upu .. could my bodge job on a resistor screw up rtty ?
[09:03] <Upu_2E0UPU> yep
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[09:03] <NigelMoby> Dam
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[09:03] <Upu_2E0UPU> its a voltage divider
[09:04] <Upu_2E0UPU> so if the resistor(s) is/are wrong you'll get the wrong voltage and the wrong shift
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[09:04] <NigelMoby> I've got the tx pin resistor leg and avr pin in 1 connection
[09:04] <Upu_2E0UPU> take a pic
[09:05] <NigelMoby> Oki its not pretty mind
[09:07] <NigelMoby> http://twitpic.com/4nie95
[09:08] <NigelMoby> The Orange cable is tx from Ntx2 the blob is avr pin and resistor leg
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[09:11] <Upu_2E0UPU> would probably need wiring diagram too sorry
[09:12] <Upu_2E0UPU> Berwick sorry not Keswick
[09:12] <NigelMoby> That'd be fun, I think maybe they just need their own hole on the stripboard instead of being bobbed together
[09:13] <NigelMoby> Blobbed*
[09:13] <hibby> Should add the launch is from Cumnock, today
[09:14] <NigelMoby> Hey hibby
[09:14] <fsphil> schematic: http://i.imgur.com/4BMpb.png
[09:14] <NigelMoby> Phillllll
[09:15] <NigelMoby> I think I need to disorder, break the pin out and redo it where there's more room.
[09:15] <NigelMoby> Desolder*
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[09:16] <NigelMoby> All I get on radio is 1 line and very high pitch, a lot higher than normal
[09:16] <GW8RAK> NigelMobey, that orange wire looks like it's bridging two strips
[09:17] <NigelMoby> Yeah but its not, tested it, its very close but def not touching
[09:18] <GW8RAK> Okay
[09:18] <NigelMoby> Knew I should've made the board a Lil bigger :/
[09:18] <GW8RAK> I always find veroboard frustrating for that reason.
[09:18] <NigelMoby> It's a right arse
[09:19] <GW8RAK> Inevitably, I have to take wires to empty bits of board for the connections I forgot about.
[09:19] <GW8RAK> But it is still quicker than making a pcb
[09:19] <NigelMoby> Yup, problem I had there is I can't get to the spare hole under the Ntx2
[09:20] <NigelMoby> The resistor literally needs to move back 1 strip I think
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[09:22] <Shuffty> Mornign all
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[09:22] <Shuffty> Any idea when hadie 3 is planning on launching?
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[09:23] <Upu_2E0UPU> not sure but we have a launch shortly
[09:24] <fsphil> Shuffty, probably not this weekend either. predictions are a bit near the coast
[09:26] <fsphil> also easter holidays. nobody wants to go :)
[09:27] <fsphil> though I've got some interest from a local ham club
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[09:28] <Upu_2E0UPU> transport issue fsphil ?
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[09:29] <fsphil> yea
[09:30] <fsphil> tis the catch with being a 1-guy hab team :)
[09:33] <fsphil> there's an annoyingly strong carrier on 434.651 mhz here
[09:34] <fsphil> it's frequency is dropping slowly, hopefully it'll move out of the way before launch
[09:34] <fsphil> oh it just disappeared
[09:34] <NigelMoby> Lol magic
[09:34] <fsphil> unless that is the payload
[09:35] <hibby> should be more than a carrier...
[09:35] <Upu_2E0UPU> doubt you'd pick it up from there ?
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[09:35] <fsphil> not on the ground nah
[09:35] <Upu_2E0UPU> hows prep going hibby ?
[09:35] <fsphil> when it disappeared there was a short databurst following it. def. not rtty though
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[09:41] <Shuffty> Cool fsphil - looking forward to it.
[09:42] <Shuffty> Got family only at the moment, so having to dedicate time to them... everything else is taking a back seat for a few weeks... but ddont want to miss your launch! :-)
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[09:50] <hibby> :/
[09:50] <hibby> they got moved out the park and as such are now re-setting up in a different one
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[10:04] <Darkside> http://www.projectbluehorizon.com/
[10:04] <Darkside> wut
[10:04] <Darkside> they are launching in 15 hours
[10:04] <Darkside> no wait, postponed now
[10:04] <hibby> it's secretive and they don't tell us much, so that'll be news to everyone, lol
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[10:12] <NigelMoby> Meh pbh sux
[10:13] <NigelMoby> To hush hush and funded by Lockheed Martin... nuff said
[10:14] <GW8RAK> Just looking at theirPBHII mission, it was their first successful abort. Isn't that a contradiction?
[10:15] <NigelMoby> Lol I thought that, weird eh.
[10:15] <SpeedEvil> Ask NASA about unsuccessful balloon aborts
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[10:20] <fsphil> well hadie:2 was a successful failure
[10:20] <fsphil> it worked perfectly, except where it didn't
[10:21] <GW8RAK> Or was it a failed success?
[10:21] <fsphil> oooh
[10:21] <Upu_2E0UPU> was that the one you launched in a gale force storm where the antenna broke and it crash landed in the Yorkshire dales never to be seen again ?
[10:22] <fsphil> that's the one! :)
[10:22] <fsphil> but it *got* there :)
[10:22] <GW8RAK> More than I've managed :(
[10:22] <Upu_2E0UPU> it sure did and set a speed record in the process :)
[10:23] <Upu_2E0UPU> and me
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[10:24] <hibby> last week's catastrofuck got a write up, btw : http://arseh.at/6b4
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[10:28] <Upu_2E0UPU> learning exercise
[10:28] <Upu_2E0UPU> any idea on launch time ?
[10:28] <hibby> they're maybe 15 mins away... they started filling about 11:10
[10:30] <Upu_2E0UPU> sweet
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[10:38] Action: hibby finds an excuse to run another computer in here
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[10:52] <Colin-G8TMV> No Strathclyde launch yet?
[10:55] <hibby> just about to throw it in the ait
[10:55] <hibby> **air.
[10:55] <hibby> just got "the call"
[11:04] <SamSilver_> and?
[11:04] <hibby> I think they're planning on releasing it very soon.
[11:04] <hibby> although I can't hear anything
[11:05] <SamSilver_> hohibby how close are you from them?
[11:06] <SamSilver_> just call me DyslexicDave today!
[11:07] <hibby> I'm their academic contact in the uni / ground station manager
[11:07] <hibby> they're about 30 miles south?
[11:08] Topic changed on #highaltitude by ChanServ!ChanServ@services.: Welcome to #highaltitude - discuss anything to do with high altitude projects (balloons, gliders, etc) www.ukhas.org.uk - FUSEN launch 21/4 11:00 BST from Cumnock (Strathclyde Uni)
[11:09] <hibby> think I can hear them now
[11:09] <hibby> I can
[11:09] <SpeedEvil> http://ieeexplore.ieee.org/Xplore/login.jsp?url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel5%2F3%2F5353810%2F05401116.pdf%3Farnumber%3D5401116&authDecision=-203
[11:09] <SpeedEvil> Fun.
[11:09] <SpeedEvil> Wish I had access
[11:09] <SpeedEvil> Using lasers as spark plugs.
[11:10] <SpeedEvil> _lots_ of interesting things to do if high power pulsed lasers become cheap
[11:10] <Upu_2E0UPU> we have a point on the tracker
[11:10] <Upu_2E0UPU> 434.650 or 651 ?
[11:10] <hibby> i've got it on 650, currently, but it's not hugely stable
[11:11] <hibby> doesn;t seem to have any altitude data attached
[11:11] <hibby> oh well
[11:13] <hibby> apparantly it went from 121mtrs to 0 as soon as it was launched
[11:14] <SamSilver_> it fell down a well??
[11:14] <Upu_2E0UPU> this been tested ?
[11:14] <hibby> Upu_2E0UPU: everything worked fine in testing, as far as I know, but evidently the gps can't quite work out the altitude with rate of ascent or something
[11:16] <Upu_2E0UPU> fingers cross it will sort itselfout
[11:16] <GW8RAK_> If we know the range to the balloon, we can calculate the minimum altitude at AOS
[11:17] <Upu_2E0UPU> nothing here atm
[11:17] <GW8RAK_> For me it would be about 8000m
[11:17] <Upu_2E0UPU> I got it at 5000 meter on the last launch
[11:17] <Upu_2E0UPU> meters
[11:17] <Upu_2E0UPU> but that was on the way down
[11:18] <hibby> different ballon/module
[11:18] <hibby> this is a last minute gps module becuase the fsa03 died a bit
[11:18] <Upu_2E0UPU> ok
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[11:21] <hibby> altitude!
[11:21] <hibby> must have been an ascent rate thing
[11:21] <GW8RAK_> Excellent
[11:22] <Upu_2E0UPU> right
[11:22] <Upu_2E0UPU> sadly I can't hear the radio but I don't see anything on the water fall
[11:22] <Upu_2E0UPU> got anything GW8RAK ?
[11:22] <Shuffty> Is your balloon up upu?
[11:23] <Upu_2E0UPU> no Shuffty it's Fusen
[11:23] <GW8RAK_> Yes, my altitiude calcs were wrong. Guessed the distance.
[11:23] <Upu_2E0UPU> I don't launch balloons I just sit here watching other peoples :)
[11:23] <Shuffty> Ah... thought I missed something for a moment :-)
[11:23] <Shuffty> Hang on... fusen balloon is up?
[11:23] <Upu_2E0UPU> yup in the air now
[11:23] <hibby> aye
[11:23] <GW8RAK_> Can hear something, and got a shift of about 380Hz. Doesn't sound like RTTY though
[11:24] <Shuffty> Oooh... where is it launching / launched from?
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[11:24] <hibby> Shuffty: cumnock, ayrshire
[11:24] <hibby> see el tracker :)
[11:24] <hibby> it's the last of the SUNSET launches
[11:24] <hibby> this gps module doesn't do changing altitude at all well
[11:25] <GW8RAK_> 434.6518 hear
[11:25] <GW8RAK_> here
[11:25] <GW8RAK_> 350Hz shift
[11:25] <hibby> i've got it on .650 with a 600hz shift ;)
[11:26] <hibby> looks more like 650, tbh
[11:26] <GW8RAK_> The 1.8KHz difference is about the same as the filter offset. Different rigs may hear the same thing, but 1.8KHz apart
[11:27] <Upu_2E0UPU> nothing here at the moment
[11:27] <Upu_2E0UPU> how often is it transmitting
[11:28] <GW8RAK_> I'm getting continuous transmit. Is that correct Hibby
[11:28] <GW8RAK_> ?
[11:28] <Laurenceb_> http://www.cdiweb.com/FeaturedProducts.aspx?type=709&manf=383&NavType=1
[11:28] <Laurenceb_> ^wow
[11:28] <Laurenceb_> that and the HMC5883 from digikey- 9DOF for $18
[11:28] <hibby> should be, I don't know how the boys configured it to transmit data, but there's an awful lot of it.
[11:29] <GW8RAK_> What is your take off to the North like Upu_2EOUPU?
[11:29] <GW8RAK_> I'm not far from you, albeit on top of a hill
[11:29] <Upu_2E0UPU> I am about 100 feet down from the top of the valley facing north
[11:29] <Upu_2E0UPU> so it may need to be a little higher
[11:30] <Upu_2E0UPU> also just going on the waterfall
[11:30] Action: hibby reckons its over 10km now. When the ascent rate cools off it'll likely give us more altityde data
[11:31] <Upu_2E0UPU> What GPS is in it ?
[11:31] <GW8RAK_> Ascent has stopped
[11:31] <GW8RAK_> (according to the tracker
[11:31] <hibby> GW8RAK_: it won't have
[11:31] <hibby> it's up at 9000m now
[11:31] <GW8RAK_> Signal not getting any stronger here
[11:31] <GW8RAK_> Just jumped up
[11:31] <hibby> the gps module can't really handle the rate of change of altitude
[11:31] <hibby> by the look of it
[11:31] <hibby> look at the profile on the tracker.
[11:32] <hibby> it may be ublox-5 based, but it's not ideal by the looks of things.
[11:32] <fsphil> I've only got the one carrier
[11:32] <hibby> it's rtty now?
[11:33] <Upu_2E0UPU> what frequency fsphil ?
[11:33] <hibby> and tone
[11:33] <hibby> this one is an experiment into the thermal characteristics of the foam they're using / how easy it is to model, and there's a gopro hero hd inside to
[11:33] <fsphil> 434.649 dial
[11:34] <SpeedEvil> Laurenceb_: Can it actually use the hmc584 though?
[11:34] <Laurenceb_> i think so
[11:34] <fsphil> wait, I see two now
[11:34] <Laurenceb_> you can configure the magno setup
[11:34] <hibby> It's loud and clear on .650 for me, if not a bit unsure as to what frequency it should be on by a few hz
[11:34] <SpeedEvil> Laurenceb_: Hmm.
[11:34] <Laurenceb_> yeah i need to check
[11:34] <Laurenceb_> hmc5883 is now $3.7 on digikey
[11:35] <SpeedEvil> Laurenceb_: Iphone-et-al makes prices crash!
[11:35] <Laurenceb_> yeah its mental
[11:35] <fsphil> the shift is about 745hz
[11:35] <GW8RAK_> fsphil. I've got a strong carrier on 434.649 as well
[11:35] <SpeedEvil> wow
[11:35] <Laurenceb_> my lsm303dlh +itg3200 looks hopelessly outdated now
[11:35] <SpeedEvil> Laurenceb_: lol
[11:35] <SpeedEvil> :)
[11:35] <Laurenceb_> hmc5883 is 160hz outcput compared to 75 for lsm303
[11:36] <SpeedEvil> It's _scary_ how fast the mass market can go when it kicks into gear.
[11:36] <Laurenceb_> and the mpu has 1/6 the gyro noise
[11:36] <Laurenceb_> also the whole data buffering thing helps massively
[11:36] <Laurenceb_> just dma all the data over
[11:36] <Laurenceb_> bah i need to do a version 2 pcb
[11:37] <SpeedEvil> :)
[11:37] <Laurenceb_> ublox6, that nice baro sensor and these mems sensors
[11:37] <SpeedEvil> I would say no.
[11:37] <fsphil> I'm struggling to decode anything
[11:37] <SpeedEvil> First work out the bugs in the RF, and see if it works
[11:37] <SpeedEvil> Then put new sensors on it
[11:37] <SpeedEvil> Otherwise you're gonna end up doing this dance over and over.
[11:38] <Laurenceb_> http://shop-emea.u-blox.com/abashop?s=274&p=productdetail&sku=555
[11:38] <Laurenceb_> ^and that
[11:38] <Laurenceb_> yeah
[11:38] <Upu_2E0UPU> just white noise here still
[11:39] <SpeedEvil> What's nice about the ublox-6?
[11:39] <Laurenceb_> 5hz as opposed to 4, about 30% less current
[11:39] <GW8RAK_> Are you decoding okay hibby?
[11:40] <SpeedEvil> ah
[11:40] <Laurenceb_> configurable timepulse
[11:40] <hibby> GW8RAK_: aye,
[11:40] <Laurenceb_> smaller package so you can use the ublox modules on a small pcb
[11:40] <GW8RAK_> Can distinguish any RTTY here at all.
[11:40] <Upu_2E0UPU> GW8RAK still on 649.649 ?
[11:40] <Laurenceb_> rather than going for something like the fsa03
[11:40] <GW8RAK_> Signal is still there, but audio very low.
[11:40] <hibby> some are coming through a bit wonky, but it's shifting up the frequency a bit, though
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[11:41] <fsphil> nice rtty here, but all bad lines
[11:41] <GW8RAK_> Upu_2EOUPU - .6518
[11:41] <GW8RAK_> Have you got an updated altitude hibby?
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[11:42] <fsphil> also the frequency is drifting all over the place :)
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[11:42] <Laurenceb_> SpeedEvil: the mpu6050 accel is considerably worse than the lsm303 accel
[11:42] <Laurenceb_> thats the one -ive point
[11:43] <GW8RAK_> Tested the Yupiteru scanner just now and not as good as the FT-726. According to the s/n ratio on fldigi, it is 5 - 8 dB worse.
[11:43] <SpeedEvil> hmm
[11:43] <fsphil> no data in a while
[11:43] <fsphil> just the carier
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[11:43] <GW8RAK_> Signal is coming back up now, but with fading
[11:43] <Upu_2E0UPU> the front/rear antenaa selector covers all bands doesn't it ? So if I pick rear antenna on 2meters it will still be on rear when I switch to 70cms on a Yaseu 817 ?
[11:43] <Upu_2E0UPU> Yaesu
[11:44] <Colin-G8TMV> no, it's set per band
[11:44] <Upu_2E0UPU> oh shit
[11:44] Nick change: Upu_2E0UPU -> UpuFail
[11:44] <Laurenceb_> hmm also accel offset drifts with temperature :S
[11:44] <fsphil> d'oh
[11:44] <UpuFail> Can Ham Radio Deluxe select that ?
[11:44] <GW8RAK_> You are not the first
[11:44] <Laurenceb_> invensense accels seem a little poor
[11:44] <GW8RAK_> I don't think HRD does
[11:44] <UpuFail> double poo
[11:44] <GW8RAK_> RTFM?
[11:45] <fsphil> still no data
[11:45] <UpuFail> it does
[11:45] <UpuFail> oh look at that
[11:45] <UpuFail> a signal
[11:45] <GW8RAK_> I don't think the signal here has got any stronger since AOS
[11:45] <Colin-G8TMV> indeed - thats actually a special feature so you can operate split band with propper antennas for each
[11:45] Nick change: UpuFail -> Upu-2E0UPU
[11:45] <GW8RAK_> Welcome back Upu
[11:46] <fsphil> lol
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[11:46] <fsphil> there's a faint carrier slowly descenting in frequency nearby
[11:46] <fsphil> satellite?
[11:46] <Upu-2E0UPU> I see a carrier
[11:48] <fsphil> oh finally got some rtty again
[11:48] <GW8RAK_> Just gone lf a bit and I could hear RTTY for a while.
[11:48] <GW8RAK_> What shift should we have hibby?
[11:48] <Upu-2E0UPU> 100 baud isn't it ?
[11:48] <fsphil> still not decoding
[11:49] <fsphil> 100 baud yep
[11:49] <fsphil> shift is 745 hz
[11:49] <hibby> supposed to be 600 shift, but you'll have to increase the rx filter bandwidth
[11:49] <fsphil> I'm only getting fragments still
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[11:49] <Laurenceb_> SpeedEvil: theres an i2c passthrough mode on the mpu, so you can setup the magno with the main i2c bus
[11:50] <SpeedEvil> Ah - sensible
[11:50] <Laurenceb_> shame the accel drift is 1mg/C
[11:50] <Laurenceb_> not sure how well that would calibrate out
[11:51] <Upu-2E0UPU> where can I set the shift manually ?
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[11:51] <fsphil> config -> modems _> rtty
[11:52] <fsphil> change shift to custom
[11:52] <Upu-2E0UPU> got it thx
[11:52] <fsphil> adjust with the slider thingy below
[11:52] <Upu-2E0UPU> SQL off ?
[11:53] <fsphil> this signal is snaking worse than a river
[11:53] <fsphil> yea SQL off
[11:53] <Upu-2E0UPU> yeah I get that too
[11:53] <Upu-2E0UPU> bottom carrier is stable but the rest is all over the place
[11:53] <hibby> it's pretty windy, eh?
[11:54] <GW8RAK_> I can hear RTTY, but can only see one side of the signal 100baud and 600Hz shift
[11:54] <fsphil> I don't think it's wind
[11:54] <Upu-2E0UPU> snake again :)
[11:54] <GW8RAK_> I was listening to the wrong signal before I think
[11:54] <hibby> fsphil: i didn't mean wind as in wind, but windy as in to wind some string
[11:54] <hibby> or a windy road
[11:55] <fsphil> aah
[11:56] <Upu-2E0UPU> whats the recieve filter bandwidth do ?
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[11:57] <GW8RAK_> It limits the range of frequencies passed to the audio stages. A 3KHz filter allows 3 KHz and you can work out what a 500Hz filter does
[11:57] <Upu-2E0UPU> ok its set at 150 at the moment
[11:57] <GW8RAK_> Have you got an extra filter in your 817?
[11:57] <Upu-2E0UPU> no
[11:58] <junderwood> Is the signal snaking about 100Hz?
[11:58] <Upu-2E0UPU> yes
[11:58] <junderwood> OK. Got it here in Oxford (M0JCU)
[11:58] <junderwood> Lots of QRM, though
[11:58] <Upu-2E0UPU> not getting decodes
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[11:59] <Upu-2E0UPU> nice sine wave
[12:00] <Colin-G8TMV> Upu-2E0UPU: radio set to usb?
[12:00] <Upu-2E0UPU> yep
[12:00] <fsphil> I think the voltage on the payload is oscillating again
[12:00] <GW8RAK_> Unless they have changed the spec, the standard filter is about 3.5KHz IIRC and this is set
[12:00] <junderwood> OK. QRM is due to my computer monitor!
[12:00] <Colin-G8TMV> GW8RAK_: on the 817? yes
[12:02] <Upu-2E0UPU> http://ava.upuaut.net/files/wavy.jpg
[12:02] <fsphil> man vnc is sooo slow
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[12:02] <hibby> Upu-2E0UPU: I don't have that lower carrier, but I've got the wavyness
[12:02] <fsphil> I wonder if the baud rate really is 100
[12:03] <hibby> fsphil: it definately is.
[12:03] <hibby> https://github.com/Hibby/Strathclyde-HAB-Project/tree/master/fusen_computer
[12:03] <hibby> that's the code they gave me
[12:04] <Colin-G8TMV> Upu-2E0UPU: that jpg doesn't look like a RTTY signal to me
[12:04] <hibby> Colin-G8TMV: just a carrier.
[12:04] <Upu-2E0UPU> thats all I'm getting from here
[12:04] <hibby> It's not doing much rtty, is it?
[12:04] <hibby> it's been programmed to shout out whenever the gps responds to a serial poll and it gets a valid string
[12:04] <fsphil> hmm.. possibly their antenna. this is very difficult to decode
[12:05] <Upu-2E0UPU> 800Hz shift ?
[12:05] <hibby> Upu-2E0UPU: go to 600hz and have a wide set receive filter bandwidth
[12:05] <fsphil> still 745 hz here
[12:05] <hibby> mine is about 350hz
[12:05] Action: Colin-G8TMV is at work so can't listen
[12:06] <hibby> anyone else spot that it's now disappeared
[12:06] <junderwood> yes
[12:06] <GW8RAK_> I've had a constant signal for sometime with a 350Hz shift, but I thought that was not the signal as it doesn't sound like RTTY
[12:06] <fsphil> eek
[12:07] <Upu-2E0UPU> gone ?
[12:07] <Upu-2E0UPU> got a carrier but nothing else now
[12:08] <hibby> ive not got a carrier
[12:08] <junderwood> Just found a signal on 434.644 which looks very much like it
[12:09] <hibby> constant signal shouldn't have a shift...
[12:09] <hibby> junderwood: yes indeed...
[12:09] <Upu-2E0UPU> oh yeah what's it doing there
[12:10] <hibby> and why's it not giving us rtty?
[12:10] <hibby> battery issues?
[12:10] <GW8RAK_> I'm getting just a constant warbling tone with two strong signals 350Hz apart
[12:10] <junderwood> Did someone mention you were using a uBlox?
[12:11] <hibby> ublox 5
[12:11] <GW8RAK_> Flight mode?
[12:11] <junderwood> beat me!
[12:11] <GW8RAK_> Sorry, I'll be slower next time
[12:11] <junderwood> :)
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[12:13] <GW8RAK_> As I understand it hibby, the ublox units have to be set into flight mode for HAB'ing.
[12:13] <hibby> GW8RAK_: yep
[12:14] <hibby> so it's in that mode...
[12:14] <GW8RAK_> Puzzling
[12:14] <hibby> I suspect that the battery is low and it's refusing to do the calculations onboard
[12:15] <junderwood> Did it get reset? Portable (standard) mode packs up at 12km. Your last altitude was ........ 12.1 km
[12:15] <hibby> it looks like it was on for quite some time before it went up
[12:15] <junderwood> It's a lot weaker here
[12:15] <junderwood> can barely see it on the waterfall now
[12:15] <hibby> junderwood: the code sends it an initialisation string of 0xB5, 0x62, 0x06, 0x24, 0x24, 0x00, 0xFF, 0xFF, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x10, 0x27, 0x00, 0x00, 0x05, 0x00, 0xFA, 0x00, 0xFA, 0x00, 0x64, 0x00, 0x2C, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x16, 0xDC on bootup of the microcontroller
[12:15] <Upu-2E0UPU> still got it but no data at all
[12:16] <hibby> apparently flight mode, according to the ukhas wiki
[12:16] <junderwood> I remember writing that code.
[12:16] <hibby> it's the same code that worked in 2 previous balloons
[12:16] <Upu-2E0UPU> got something at 434.645
[12:16] <junderwood> If it loses power for any reason, the setting will be lost.
[12:17] <hibby> junderwood: indeed, but the gps and board are powered from separate sources to avoid that issue
[12:17] <junderwood> last heard at 434.644 but nothing now
[12:17] <hibby> gps has a 3.3V ldo coming from 4AA batteries, arduino board has a 9v battery straight in.
[12:18] <junderwood> GPS should be good for days, then
[12:18] <hibby> that's how it was designed
[12:18] <junderwood> short? ESD?
[12:18] <hibby> likely, yes. or battery on the board.,
[12:18] <hibby> the first transmission received was #325
[12:19] <hibby> assuming and if it's clustered a few every minute, that's a reasonable amount of time that it was running for
[12:20] <hibby> the frequency jump can possibly be explained by the fact that it's got handwarmers in it, as far as I remember, because they wanted to keep it all warm
[12:20] <hibby> if the radio comes into contact with one, the crystal will detune and give it a funny jump
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[12:23] <GW8RAK_> If fldigi reports sentence uploaded, what does that mean?
[12:23] <Upu-2E0UPU> probably reporting your location
[12:23] <GW8RAK_> Okay, thanks
[12:25] <GW8RAK_> Oh well, I've had an early and long lunch. Better get back to work.
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[12:25] <Upu-2E0UPU> GW8RAK : ZZ,GW8RAK,2011-04-21 12:22:35,53.250000,-3.250000,FT726/MVT-7100,COLINEAR,r114,APEX
[12:25] <Upu-2E0UPU> you're on the wrong payload setting GW8RAK
[12:26] <fsphil> the sudden frequency drop looks like the NTX2 TX pin was shorted to GND
[12:27] <fsphil> still got a nice wavering line on the waterfall
[12:27] <Upu-2E0UPU> yeah
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[12:27] <Upu-2E0UPU> but no sideband >
[12:27] <Upu-2E0UPU> ?
[12:28] <junderwood> Seems to be getting stronger again here!
[12:28] <fsphil> no signal at all, just the carrier
[12:28] <Upu-2E0UPU> yeah just no data
[12:28] <junderwood> Dial freq is 434.644
[12:29] <Upu-2E0UPU> flight computer broken ?
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[12:29] <Upu-2E0UPU> does to code transmit even if it doesn't have GPS ?
[12:29] <Upu-2E0UPU> does the even
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[12:30] <fsphil> likely
[12:30] <Upu-2E0UPU> fading here
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[12:31] <hibby> still strong here, but it's likey 15 miles away or something
[12:31] <hibby> Upu-2E0UPU: doesn't look like it
[12:31] <fsphil> same signal here, but very wiggly
[12:31] <hibby> but i reckon enable's left high
[12:31] <Upu-2E0UPU> come back here now
[12:31] <fsphil> +signal strength
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[12:33] <Upu-2E0UPU> sadly nothing to see here
[12:33] <fsphil> hehe, fldigi decoding the noise: "REAR"
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[12:36] <fsphil> still a lovely carrier
[12:37] <Upu-2E0UPU> got a carrier on 434.650
[12:39] <junderwood> completely disppeared again here
[12:40] <Upu-2E0UPU> 434.648.900
[12:40] <Upu-2E0UPU> faint
[12:40] <hibby> probably going to end up in my dear ma's garden, at this rate.
[12:41] <hibby> last update on the tracker it was heading straight there
[12:43] <Upu-2E0UPU> what was the flight prediction duration ?
[12:44] <hibby> turning the rotators to see if i can locate it by strongest signal
[12:44] <hibby> it's fsking strong now, lol
[12:45] <hibby> the tone is 19dB over the noise floor at 216.6 degrees from me, 25 with an angle of 27 degrees
[12:46] <hibby> 17 degrees elevation, even
[12:47] <fsphil> quite strong here too
[12:47] <fsphil> I'd probably be able to decode it now if it was still sending data
[12:47] <hibby> aye
[12:47] <hibby> me too
[12:47] <hibby> fsphil: are you directional?
[12:48] <fsphil> omni
[12:48] <Upu-2E0UPU> yeah still a decent signal here
[12:48] <fsphil> would be nice, I'm in a good spot for a bit of DF
[12:48] <fsphil> if I was at home I'd get out the yagi's
[12:48] <hibby> acht well. could have been good to tri/quad/biangulate using a couple of directional antennas to try and get some sort of idea
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[12:58] <Upu-2E0UPU> I still have a carrier, is that the balloon or something else ?
[12:59] Nick change: jkominar -> jkominar_
[12:59] <hibby> balloon
[13:00] Nick change: jkominar_ -> jkominar
[13:00] <Upu-2E0UPU> nice and solid now
[13:03] <GW8RAK> Upu-2E0UPU it was testing to make sure I had the right settings by switching to another payload and then back to the correct one. Obviously it reports any change.
[13:07] <fsphil> I've lost the signal
[13:10] <Upu-2E0UPU> still got it
[13:10] <fsphil> what dial freq.?
[13:11] <Upu-2E0UPU> 434650
[13:12] <hibby> i don't
[13:12] <Upu-2E0UPU> 434649
[13:12] <Upu-2E0UPU> I suspect I've got something local then
[13:12] <hibby> nothing
[13:12] <hibby> must be
[13:12] Nick change: Upu-2E0UPU -> UPu
[13:12] Nick change: UPu -> Upu
[13:13] <fsphil> yea
[13:13] <fsphil> I suspect it's on the ground now
[13:13] <hibby> aye
[13:13] <fsphil> don't suppose there was an sms backup?
[13:13] <hibby> gsm tracker's given it the location
[13:14] <hibby> stewarton, ayrshire
[13:14] <hibby> bang on
[13:14] <fsphil> sweet
[13:19] <Upu> be interesting to know what went wrong
[13:23] <hibby> aye
[13:23] <hibby> will be
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[13:24] <groupo> hibby: ping
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[13:48] <M0DTS> as usual i was at work and missed yet another balloon! how did FUSEN go?
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[13:52] <Laurenceb_> can anyone here help me setup a printer on ubuntu?
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[13:57] <Randomskk> Laurenceb_: maybe
[13:57] <Randomskk> I like going to localhost:631 and doing it via cups proper
[13:57] <Laurenceb_> trying #ubuntu, just a sec
[13:57] <Randomskk> but your problem may be that you need actual drivers
[13:59] <fsphil> M0DTS, it died in the air
[13:59] <fsphil> transmitted an empty carrier for most of the flight
[14:00] Action: SpeedEvil wonders...
[14:00] <Darkside> at least you can DF a carrier
[14:01] <SpeedEvil> I wonder how easy it would be to get an accurate cycle-by-cycle carrier slip.
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[14:01] <SpeedEvil> i suppose you'd need a GPS disciplined oscillator inthere somewherr
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[14:05] <eroomde> whoopsie
[14:06] <Laurenceb_> i was thinking of using a balun and rf switch to do psk
[14:06] <Laurenceb_> dont laugh
[14:06] <Darkside> ooh
[14:06] <Darkside> thats an interesting idea
[14:06] <Darkside> that'll do the 180 degree phase shift
[14:06] <Darkside> if you do it right
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[14:07] <Laurenceb_> yeah
[14:07] <Darkside> i wonder if you could overlay FSK and BPSK
[14:07] <Darkside> so on the off-times when theres no RTTY, do a burst of BPSK
[14:08] <Darkside> i mean, between RTTY transmissions
[14:08] <fsphil> continuous rtty is handy for following the frequency drift
[14:08] <Darkside> nah what i mean, is you PSK the tone between data bursts
[14:09] <Darkside> so if you have fldigi on RTTY mode it should hopefully still track it
[14:09] <Darkside> and then you could switch to BPSK mode and get additiona data, or something like that
[14:09] <Darkside> not sure how it would go though
[14:10] <fsphil> if you could do bpsk then best to stick with that
[14:10] <Darkside> like, try BPSK-500
[14:10] <Darkside> ok
[14:10] <fsphil> it would probably work better than rtty
[14:10] <Darkside> mm, would be good to try, thats for sure
[14:10] <fsphil> or that BPSK-1000 mode being used on ARISsat-1
[14:10] <Darkside> i might try that sometime soon
[14:10] <fsphil> it's designed to handle long fades
[14:11] <Darkside> do any of those modes have FEC?
[14:11] <fsphil> the arissat-1 version does
[14:11] <fsphil> I dont' think the normal BPSK modes do
[14:11] <Darkside> ok
[14:12] <fsphil> it uses convolution codes
[14:12] <Darkside> so one phase is 0, other phase is 1?
[14:12] <Darkside> os does it go on phase transitions
[14:12] <fsphil> yea
[14:12] <Randomskk> transitions
[14:12] <fsphil> transitions
[14:12] <Darkside> wait, it has to be phase transitions
[14:12] <Darkside> else you cant tell
[14:12] <Randomskk> yea
[14:13] <Darkside> hmm
[14:13] <M0DTS> fsphil tks info about fusen... hoe the atlantic one goes ok! will be listening if it goes ahead.
[14:13] <Darkside> well, i might try that at some point
[14:13] <fsphil> with the FEC the throughput of BPSK-1000 is 500 bits/sec
[14:13] <Darkside> my current HF transmitter can do PSK
[14:13] <Darkside> i just need to make the transmitter work again
[14:14] <GW8RAK> While you are on the subject of phase transitions, with QPSK, is it the phase which conveys the information, i.e. phase 90, 180 270, 0 degrees or is it the transition? Never seen an answer to this question.
[14:15] <Randomskk> as above, transition
[14:15] <Randomskk> can't be an absolute phase because phases have to be relative to something
[14:15] <Darkside> then why do you see constellation digrams showing certain phases meaning certain bit combinations?
[14:15] <Randomskk> that's a phase shift
[14:15] <GW8RAK> Thanks. I had a feeling it was but the best explanation I found was in one of my son manuals.
[14:16] <Randomskk> which is a phase relative to the previous signal, before the shift
[14:16] <Randomskk> so I mean, it is a phase, but it's the phase relative to whatever it was before the shift
[14:16] <GW8RAK> dealing with QPSK of phone signals on fibre optic
[14:16] <Randomskk> sounds fun
[14:16] <Randomskk> I wanna get a HAB balloon doing OFDM with QPSK subcarriers
[14:17] <Randomskk> hello, data rate
[14:17] <Darkside> Randomskk: DRM :D
[14:17] <Darkside> OFDM would be awesome
[14:17] <GW8RAK> It was/is. I've always thought telephones were simple, but quite interesting really.
[14:17] <Darkside> would mean a much more complicated radio setupt ho
[14:17] <GW8RAK> SSB on telephones in the '20's
[14:17] <Darkside> tho*
[14:17] <Randomskk> Darkside: yea, /much/ more complicated
[14:17] <Randomskk> shame really
[14:17] <Darkside> well, if you could get a SSB transmitter going, you could do it
[14:18] <Darkside> but first and foremost, that means a linear transmitter
[14:18] <Randomskk> basically need either custom silicon, discrete parts, many programmable transmitters or a proper transmit sdr
[14:18] <Darkside> which means heat and power loss
[14:18] <Darkside> if you could get a small SSB transmitter, maybe for HF or something, it could be possible
[14:19] <Darkside> then use something to generate the transmit audio
[14:19] <Darkside> but eek, that'd be power hungry
[14:19] <Darkside> gnuradio on a beagleboard would do it :P
[14:19] <Randomskk> custom silicon'd be the way to go. you can get 802.11abgn+bluetooth in one tiny chip these days
[14:19] <Randomskk> just need to do it for these days
[14:19] <Randomskk> just need something that did 434mhz instead of 2.4ghz and optimised for long range low data
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[14:19] <Randomskk> ugh, latency
[14:19] <Randomskk> ignore that middle message
[14:19] <Darkside> gnuradio on beagleboard + FT-817 :P
[14:19] <Randomskk> haha totally
[14:19] <Darkside> in a box
[14:20] <Darkside> actually a USRP would be lighter
[14:20] <Darkside> you just need a linear amp to go after it
[14:20] <Darkside> OH MAN someone should fly a USRP
[14:21] <russss> I own one but I'm sure as hell not flying it anywhere
[14:21] <Darkside> haha yup
[14:21] <Darkside> i've got one sitting at uni in a very big metal box
[14:21] <Randomskk> ick I think
[14:21] <Darkside> actually that machine is still on, i should be able to SSH in and play with it
[14:22] <Randomskk> ugh. I think my ipv6 tunnel is being rubbishy
[14:22] <Darkside> actually i might shut that machine down...
[14:22] <Randomskk> random minute-long lags and then whatever I said suddenly pops up
[14:22] <Randomskk> anyway yea, a usrp would be great :P
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[14:23] <Darkside> aaaand machine is off
[14:23] <Darkside> no more remote USRPing for me
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[14:24] <Darkside> i need to build a mixer for my funcube dongle
[14:24] <brabra> shut it
[14:24] <Darkside> so i can listen to HF on it
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[14:24] <Darkside> ooookay
[14:24] <Randomskk> oh funcube
[14:24] <Randomskk> they look nice
[14:25] <Darkside> has overloading issues on VHF, but it has great potential
[14:25] <Darkside> i really want to do some HF work with one
[14:25] <Darkside> i should be able to hack up a upconverter with minicircuits parts
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[14:26] <Darkside> diode ring mixer, some kind of LO, not sure what freq yet, and a bunch of filters
[14:27] <Darkside> and a preamp
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[14:29] <Darkside> ok i'd better sleep
[14:29] <Darkside> nn
[14:30] <fsphil> There was a nice 1st April email to the funcube list, about HF capability being unlocked :)
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[14:33] <Matt_soton> im fairly sure the funcube contains a E4000 http://www.elonics.com/products/products.do
[14:33] <Matt_soton> so i cant see it doing <64M
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[14:34] Action: NigeyS has killed picochu-1 .. version 2 underway :(
[14:35] <jonsowman> D:
[14:35] <NigeyS> hey jonsowman
[14:35] <jonsowman> hi NigeyS
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[14:41] <Josh___> Hi guys, can anyone briefly explain to me the effects of the jet stream on a balloon launch and how much it affects the actual balloon?
[14:48] <SpeedEvil> The balloon - pretty much not
[14:48] <SpeedEvil> The jet-stream - majorly
[14:49] <SpeedEvil> If it is blowing, and it gets into the jet-stream, it goes a long way
[14:49] <NigeyS> about all i know is they can go pretty dam fast hehe
[14:49] <SpeedEvil> The predictor is great for this
[14:49] <SpeedEvil> http://habhub.org/predict/
[14:51] <SpeedEvil> http://habhub.org/predict/#!/uuid=978628ceeb8729cd553dd52141c7b597626936ca - for example is what would happen if I launched a balloon from here now
[14:51] <SpeedEvil> going only 28km
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[15:00] <Josh_> ok thanks guys
[15:00] <Josh_> :)
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[15:38] <m1x10> hi all
[15:38] <m1x10> ping fsphil
[15:39] <fsphil> pongish m1x10 - hi hi (I'm at work, maybe slow)
[15:39] <m1x10> what is the 7mhz frequency number?
[15:40] <fsphil> I don't know what you mean? it's the 40m band?
[15:40] <m1x10> no lol
[15:40] <m1x10> for the crystal
[15:40] <m1x10> the crystal 7.3mhz
[15:40] <m1x10> the whole number
[15:40] <fsphil> oooh
[15:41] <fsphil> the frequency for doing the baud rates?
[15:41] <m1x10> y
[15:41] <fsphil> 7.372800
[15:42] <NigeyS> scarey that you actually know that phil!
[15:42] <m1x10> 7372800L
[15:42] <m1x10> is this correct?
[15:42] <m1x10> or i got to set the decimal point>
[15:43] <fsphil> that's right m1x10
[15:43] <m1x10> ok
[15:43] <fsphil> lol NigeyS, and I still can't remember my mobile number
[15:44] <m1x10> what about the "FUSEN launch" ?
[15:44] <NigeyS> snap dude, weird cause i used to be really good with numbers! old age i think :(
[15:46] Action: NigeyS sings to dumonde vs lange - memories
[15:46] <NigeyS> eek
[15:50] <fsphil> m1x10, flight computer failed in the air - stopped transmitting. but located by mobile phone after landing
[15:50] <fsphil> not sure if they're receovered it yet
[15:52] <m1x10> ah
[15:52] <m1x10> cool
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[16:14] <MNSP> hello all :)
[16:15] <MNSP> can't believe I completly missed a launch today :(
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[16:17] <NigeyS> hey MNSP , MrCraig
[16:17] <MrCraig> Hey NigeyS
[16:17] <MrCraig> hi all
[16:18] <MNSP> hiya :)
[16:20] <MNSP> get sorted with code NigeyS?
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[16:21] <NigeyS> yup, ATS-1 is ready to fly
[16:21] <NigeyS> picochu .. is ready to take a kick up the arse or a dive down the stairs
[16:22] <NigeyS> bbs cable cutting and washing up .. hmm i have an exciting life
[16:22] <MNSP_> Nice with ATS-1
[16:22] <MNSP_> when you thinking of going?
[16:24] <MrCraig> picochu? <grins a curious grin>
[16:26] <MNSP_> well I let that one slide ;)
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[16:32] <MNSP_> MrCraig, meant to ask, what antenna did you use on your hab?
[16:33] <Laurenceb_> http://www.servoflo.com/downloads/4515-digital.pdf
[16:33] Action: Laurenceb_ drools
[16:35] <Laurenceb_> 2''H20/(2^14)~0.03Pa/LSB... i cant believe that
[16:36] <Laurenceb_> theres surely a load of noise..
[16:39] <MNSP_> damn wireless playing up again :(
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[16:39] <SpeedEvil> 'total error band' ?
[16:40] <SpeedEvil> how much?
[16:40] <Laurenceb_> well aiui post cal error is 0.25%
[16:41] <Laurenceb_> so ~1pascal
[16:41] <Laurenceb_> i might email about samples
[16:41] <Laurenceb_> it does use 3ma tho, and its not clear if it can be put into a sleep mode
[16:41] <MrCraig> MNSP_ sorry, my head was in another window... sec..
[16:42] <Laurenceb_> but looks good for pitots
[16:42] <Laurenceb_> atm im using 26pc01smt + ltc2481 adc, which gives me ~0.8pa resolution
[16:42] <SpeedEvil> The MS55XX say noise +-0.1mbar
[16:43] <Laurenceb_> also £30 bom, so if i could decreas eit
[16:43] <Laurenceb_> thats 10Pa :S
[16:43] <SpeedEvil> http://www.sensores-de-medida.es/uploads/sensores_presion_economicos_oem.pdf
[16:43] <Laurenceb_> interesting, ive gtg
[16:43] <SpeedEvil> Wave.
[16:45] <natrium_> Particle.
[16:45] <eroomde> picaxe!?
[16:45] <MrCraig> drats I didn't see the quit
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[17:12] <fsphil> pic your own axe
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[17:25] <NigeyS> oo theyre testing STORM on the shuttle mission end of the month
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[17:42] <mattltm> Hi all :)
[17:50] <NigeyS> hey matt
[17:51] <mattltm> Hey NigeyS :)
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[17:51] <NigeyS> how's things ?
[17:51] <mattltm> good thanks.
[17:51] <mattltm> How you?
[17:51] <NigeyS> all good :D
[17:52] <NigeyS> might put my website back up later .. fun fun
[17:52] <mattltm> That server seems to be nice and stable now.
[17:53] <NigeyS> yup, 16 days uptime now ithink ? thanks for sorting it btw, wasnt an easy job !
[17:53] <Dan-K2VOL> afternoon all
[17:53] <mattltm> No probs. The other blade has gone in the bin.
[17:54] <NigeyS> lol shouldve taken it outside to meet a hammer!
[17:54] <eroomde> hi Dan-K2VOL
[17:54] <eroomde> how're tricks?
[17:54] <NigeyS> afternoon dan, hows you m8 ?
[17:54] <NigeyS> wow theyve all woken up, hey Ed :D
[17:55] <eroomde> lol
[17:55] <eroomde> hi
[17:55] <NigeyS> ok i have a really dumb Q
[17:55] <eroomde> i am free for about 10 days now
[17:55] <NigeyS> its been bugging me all day
[17:55] <eroomde> very happy about this
[17:55] <eroomde> shoot
[17:55] <NigeyS> schweet!
[17:55] <NigeyS> ok ..
[17:56] <NigeyS> power flow is bidirectional right ?
[17:56] Action: fsphil is still asleep
[17:56] <NigeyS> lol wake up mr!
[17:57] <eroomde> hrm, not sure i can answer that - can you give me more context?
[17:57] <NigeyS> sure.. say i have a vreg
[17:57] <NigeyS> and a cap on 1 side
[17:57] <NigeyS> say 10uf ..
[17:57] <eroomde> uhuh
[17:57] <Dan-K2VOL> doing well
[17:57] <NigeyS> is that cap taking effect both sides of the vreg, or only the side the cap is on ?
[17:57] <Dan-K2VOL> got the team moving again, pivotaltracker now reflects the state of the to-dos
[17:57] <Dan-K2VOL> https://www.pivotaltracker.com/projects/226687
[17:58] <NigeyS> excellent dan, ill take a look and see if there's anything i can do :D
[17:58] <eroomde> well, power isn't bi-directional through a v-reg
[17:58] <eroomde> so just on the other side
[17:58] <eroomde> except that, it will see the effects of the entire circuit hanging off the vreg through the vreg (it's basically all just a black box to the cap).
[17:58] <NigeyS> right, so if the vregs in the middle of a strip on a stripboard, only the side with the cap is going to see the effects of the cap, and not the other 50% of the rail "behind" the vreg
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[17:59] <eroomde> NigeyS: not really. say everthing to the right of the cap (the vreg and the circuit it powers) is just a black box
[17:59] <eroomde> if the ciruit needs more current for whatever, that cuirrent is still going to have to come in from the other side - the cap's side
[18:00] <eroomde> so the cap still provides reserve charge to the entire circuit if the circuit needs it
[18:00] <eroomde> this means that the vreg should be better able to maintain a smooth regulated voltage
[18:00] <NigeyS> aha i see, it's been bugging me for a while that .. dumb Q but well .. gotta learn
[18:01] <Dan-K2VOL> looks like Cornell is also not quite ready
[18:01] <eroomde> not dumb, it's not conceptually obvious
[18:01] <NigeyS> Dan-K2VOL, i saw earlier, wonder whats up
[18:02] <eroomde> they put it all together and it didn't work properly
[18:02] <eroomde> is my guess
[18:02] <Dan-K2VOL> I caught an email to the listeners from the team lead last night
[18:02] <eroomde> given that's pretty much a universal law of mechatronicsy projects
[18:02] <NigeyS> eroomde, its quite often i see people breaking out power and gnd from beind a vreg on breadboards and wondered why they weren't / were using a cap on the broken out strips
[18:02] <eroomde> oh i see
[18:02] <fsphil> quick ot question -- gonna setup a website for hadie, is wordpress recommended for that kind of thing?
[18:03] <eroomde> well basically you can consider anything that is connected by a wire of bit of copper as being a single point
[18:03] <NigeyS> fsphil, cant go wrong with wordpress, quick simple, fairly secure
[18:03] <Dan-K2VOL> "Flight Readiness Review and launch of PBH-15 originally planned for 4/21/11 are being postponed due to poor flight path predictions and open PTRs.
[18:03] <Dan-K2VOL>  
[18:03] <Dan-K2VOL> A rescheduled FRR will be planned for Wednesday 4/27/11 with an updated launch target (date/ time) to be communicated in the coming days.
[18:03] <Dan-K2VOL>  
[18:03] <Dan-K2VOL> Thanks,
[18:03] <Dan-K2VOL>  
[18:03] <Dan-K2VOL> Matthew T. Lewis
[18:03] <Dan-K2VOL> Lockheed Martin MS2
[18:03] <Dan-K2VOL> "
[18:03] <eroomde> it is a point, topologically
[18:03] <eroomde> so the capacitor still affects it - as they're all attached to the same node
[18:03] <NigeyS> got ya, glad someone understands all this! lol
[18:03] <mattltm> Im going to ask a very stupid question because ive been a very silly boy...
[18:04] <NigeyS> mattltm, format c: :P
[18:04] <eroomde> the above knowledge helps you model some more complicated circuits too
[18:04] <eroomde> the standard uni interview problem is the resistor cube
[18:04] <Dan-K2VOL> I have no idea what aPTR is
[18:04] <mattltm> Can you download a scetch from an Arduino?
[18:04] <NigeyS> eroomde, oo i think ill stick with uber simple for now hehe
[18:04] <fsphil> bash: format: command not found
[18:04] <NigeyS> lol fsphil
[18:04] <Dan-K2VOL> mattltm no
[18:04] <eroomde> a cube with 1 ohm resistor on each edge - what is the total resistance across the long diagonal?
[18:04] <mattltm> Thats what i thought :(
[18:04] <NigeyS> eroomde, hmm thats a good one!
[18:05] <eroomde> it's easy if you realise that you can attach points of the same potential with a wire and not affect the circuit
[18:05] <Dan-K2VOL> if you really need to get the firmware code out of an arduino you might be able to, but it'll take a lot of money and time
[18:05] <fsphil> where are the sketches stored?
[18:05] <DanielRichman> avrdude can read the arduino's flash
[18:05] <eroomde> mattltm: you can get the firmware easily enough, but you can't get a neat .pde file
[18:05] <eroomde> you can however get the binary blob
[18:06] <eroomde> and there are some bits of software that will have a go at making it human intelligeable. but they're not very good
[18:06] <fsphil> also, why do they call them "sketches"?
[18:06] <Dan-K2VOL> there you go, the time method
[18:06] <Dan-K2VOL> :-)
[18:06] <mattltm> Thanks eroomde, i'll take a look.
[18:06] <NigeyS> hex editor anyone ....
[18:06] <DanielRichman> avrdude -U flash:r:output.hex:ihex (or something)
[18:06] <eroomde> fsphil: arduino was made for artists
[18:06] <fsphil> aaah
[18:06] <DanielRichman> fsphil: why do they call it the "Arduino Language"
[18:06] <DanielRichman> it's C++ with a library.
[18:06] <eroomde> it's meant to be for people who are a bit scared by tronics/maths/physics
[18:06] <fsphil> even better question
[18:06] <DanielRichman> an ugly library.
[18:07] <NigeyS> lol
[18:07] <Dan-K2VOL> or want to get stuff quickly without remembering all the minutiae of proper C/C++ like me
[18:07] <mattltm> Ah! result! found a backup. :)
[18:07] <eroomde> sure, the library is basicallyu just drivers for the hardware ports
[18:08] <NigeyS> so if you just use avrdude, thats pure C ?
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[18:08] Action: mattltm slaps mattltm around a bit with a large trout
[18:08] <eroomde> no, it can do c++
[18:08] <NigeyS> not tried anything other than the ide to program my chips
[18:08] <Dan-K2VOL> mattltm, use Dropbox and keep your sketch there while you program
[18:08] <eroomde> avrdude doesn't deal with programming langauges
[18:08] <mattltm> Must take more care of mycode.
[18:08] <eroomde> it takes a compiled blob
[18:09] <DanielRichman> avrdude is just a bit of software that will copy the binary to the avr
[18:09] <NigeyS> ahh
[18:09] <Dan-K2VOL> it will store a version of the file every time you save
[18:09] <DanielRichman> avr-libc & gcc-avr is the bit that hides behind teh arduino ide
[18:09] <eroomde> so you can writew the sofware in whatever language you want as long as you can compil;e it somehow
[18:09] <NigeyS> so you'd do your program in watever, then just avrdude to send it to the chip ?
[18:09] <fsphil> cobol!
[18:09] <eroomde> and avrdude will then squir it in
[18:09] <eroomde> correct
[18:09] <NigeyS> sweet, id like to try not using the ide 1 day
[18:10] Action: NigeyS thinks phil will now go and hide
[18:10] <eroomde> so if you want to use C++, which is actually a very good idea imo, for your embedded development, then that's fine. gcc won't care
[18:10] <fsphil> I like the simplicity of a makefile
[18:10] <Dan-K2VOL> nigeys have you tried using notepad++ with the IDE?
[18:10] <fsphil> (not one generated by automake)
[18:10] <NigeyS> c++ is kinda friendlier...
[18:10] <Dan-K2VOL> as a frist step
[18:10] <NigeyS> yup dan, have it running as you suggested, no more quits without saving!!
[18:11] <eroomde> i'm not sure it's friendlier for beginners, but it has does some stuff that makes a lot of sense for embedded work
[18:11] <NigeyS> i was looking at using something like a friendly arm dev board for a hab
[18:11] <eroomde> eg maple
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[18:11] <NigeyS> just to see whats what .. no real benefit
[18:11] <eroomde> a very good idea
[18:12] <eroomde> we're an arm house here for the most part
[18:12] <NigeyS> friend of mine has a few they use for dev a/v stuff
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[18:12] <fsphil> I'd love a little chip like an atmega that runs linux
[18:12] <NigeyS> then i got thinking of how it would interface with stuff like temp sensors, so got scared
[18:13] <NigeyS> fsphil, intel atom! .. its kinda just a chip .. lol
[18:13] <eroomde> fsphil: back a few years ago, before arduinos, and when there were about 6 of us on this channel, people would come in and say 'ok i want to do a hab. i have bought an atmega 8. how do i put the linux in it?'
[18:13] <NigeyS> :o seriously ?
[18:13] <fsphil> carefully lol
[18:14] <eroomde> yup
[18:14] <NigeyS> bit by bit .. *gets coat*
[18:14] Action: fsphil sets a Fedora Live CD onto his atmega
[18:14] <eroomde> wahey
[18:14] <eroomde> i think pegasus 1's avionics were a bash script
[18:14] <BrainDamage> maybe a super stripped down kernel on the avr32 could run
[18:14] <NigeyS> noo, sod fedora, you want slackware on there, hard as nails! no-one can hack your hab then lol
[18:14] <eroomde> indeed - there's quite an active avr32 linux project on avrfreaks
[18:15] <eroomde> it's a nice target to develop for, i'm told
[18:15] <SAIDias> Hello World
[18:15] Nick change: SAIDias -> W0OTM
[18:15] <NigeyS> http://www.friendlyarm.net/products/mini2440?lang=en
[18:15] <eroomde> although i'm gettign a bit frustrating trying to do *any* kernal development - it's such a moving target. every release breaks stuff and the documentation lags behind.
[18:15] <NigeyS> thats what i can get hold of
[18:16] <eroomde> NigeyS: check out the maple board
[18:16] <eroomde> Cortex m3 arduino, essentially
[18:16] <NigeyS> oo that sounds tasty
[18:16] <MrCraig> Just a curiosity - how crazy is that? linux on an atmega? I mean I don't know the specs but I assume a very small device but if memory is sufficient for a very basic early model kernel....
[18:16] <BrainDamage> pandaboard is a bit expensive, but mounts a dual core arm 1.5Ghz
[18:17] <eroomde> MrCraig: well you're right. I mean unix ran on a pdp-11, right?
[18:17] <NigeyS> dam its tiny
[18:17] <eroomde> BrainDamage: those things run hot
[18:17] <eroomde> all the omap stuff is a bit dangerous for habbing
[18:17] <MrCraig> eroomde: I have certainly seen *nix variants on very old and limited hardware, it is a micro-kernel afterall.
[18:17] <NigeyS> 3.3v 72mhz .. like the look of this
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[18:18] <MrCraig> I don't think I'd fancy building gnome for it lol
[18:18] <BrainDamage> they still don't thow too much heat, as in passive cooling still works
[18:18] <eroomde> MrCraig: so i'm sure you could get something posix complient on an arm7. perhaps not at atmega 8 but i guess oemthing that looks a bit like an old nix
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[18:18] <eroomde> BrainDamage: yeah try passive colling at 35km altitude
[18:19] <NigeyS> 3 hardware usarts .. now if only the atmega 328's had that !
[18:19] <BrainDamage> oh sorry, I forgot this channel is mainly about high altitude stuff >_>
[18:19] <eroomde> :)
[18:19] <eroomde> the clue's in the name
[18:19] <Zuph> My project for the day is to get code on this STM32 dev board
[18:19] <NigeyS> postcode ?
[18:19] <BrainDamage> yeah, but I ctrl tab between channels
[18:19] <BrainDamage> without checking the name too much
[18:20] <eroomde> fair enough
[18:20] <BrainDamage> my fault ofc
[18:20] <eroomde> Zuph: what's your toolchain?
[18:20] <NigeyS> ooerr.....
[18:20] <Zuph> eroomde: GCC, I hope.
[18:21] <eroomde> you set it up from scratch?
[18:21] <Zuph> eroomde: Not yet, I haven't. Going to try the "Summon Arm Toolchain" scripts that seem popular
[18:22] <eroomde> yeah, I think Randomskk used that to set up his
[18:22] <eroomde> I think he's probably the guy to ask on here if you need help with that
[18:22] <eroomde> but good call of using a 'known' working set of tools
[18:22] <Zuph> Yeah, I had a conversation with him a long time ago about it.
[18:22] <Zuph> Just now got some hardware.
[18:22] <eroomde> trying to independtly get something work proved beyond me. I neded up having to use a codesourcery thing. this was a bit ago and i guess things have got better
[18:23] <eroomde> jonsowman: nice
[18:23] <eroomde> jonsowman: who made them?
[18:23] <jonsowman> seeed
[18:23] <Zuph> I'd be fine with using an out-of-box setup, as long as it was free (as in beer) and ran on linux.
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[18:24] <eroomde> amen to that
[18:24] <eroomde> jonsowman: just soldered up then?
[18:24] <jonsowman> eroomde: did it this morning
[18:24] <Zuph> jonsowman: Sweet. Looks nearly identical to a board I just put together :-p
[18:24] <eroomde> jonsowman: cool. is she working then?
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[18:24] <jonsowman> eroomde: have been working this afternoon (bloody examples papers), will start on code this evening
[18:24] <eroomde> jonsowman: how many eth controller chips did you buy?
[18:24] <jonsowman> yep all working :)
[18:25] <jonsowman> eroomde: just two, why?
[18:25] <eroomde> want one
[18:25] <jonsowman> took me ages to work out fuses!
[18:25] <eroomde> on the eth controller?
[18:25] <jonsowman> avr
[18:25] <eroomde> or the avr
[18:25] <eroomde> mmm. it can be a time consuming thing to fix
[18:25] <jonsowman> I haven't checked the eth controller is working properly yet, but it's clearly soldered alright
[18:25] <eroomde> :)
[18:25] <jonsowman> and it's definitely running... 50C!
[18:25] <eroomde> looks like a nice soldering job
[18:26] <eroomde> what is a dropper btw?
[18:26] <jonsowman> it's a power halver for the immersion heater
[18:26] <jonsowman> just cuts the negative half off the AC waveform as far as I can work out
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[18:26] <eroomde> ok. what is the entire board for?
[18:27] <jonsowman> turning on an immersion heater when the pv cells on the roof are producing enough excess energy
[18:27] <eroomde> cool
[18:27] <NigeyS> what an awsome project jonsowman !
[18:27] <eroomde> do you have a suitable roof?
[18:27] <jonsowman> the panels are already there
[18:27] <jonsowman> eroomde: http://hexoc.com/i/index.php/PV-Panels/Finished-installation
[18:28] <jonsowman> 1.6kW peak
[18:28] <eroomde> nice
[18:28] <Elijah_> Hi guys :-)
[18:28] <jonsowman> thanks NigeyS :)
[18:28] <NigeyS> hey Elijah_
[18:28] <Elijah_> Nice PV instal
[18:28] <Elijah_> l
[18:28] <NigeyS> 8 panels .. thats alot of coverage
[18:29] <Elijah_> Which panels are you using?
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[18:30] <jonsowman> Elijah_: http://www.segen.co.uk/Installer/Product/3026/Romag_235W_Black_PV_Panel
[18:30] <TangoAlpha> anyone here who can add a vehicle track to spacenear.us?
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[18:30] <Elijah_> Aah, nice...
[18:31] <NigeyS> what's the lifetime of them jon, any idea ?
[18:32] <jonsowman> max 10% loss at 10 years, 20% loss at 25 years iirc
[18:32] <jonsowman> guaranteed
[18:32] <jonsowman> "loss" in terms of output power
[18:32] <NigeyS> oo, thats pretty decent
[18:32] <Elijah_> Gridtie?
[18:33] <jonsowman> Elijah_: yup
[18:34] <NigeyS> ah well back to a dry build of picochu mk II .. tnx for answering that q earlier Ed, thats helped me out quite a bit now i understand things a bit better
[18:35] <TangoAlpha> who owns/runs/admins spacenear.us?
[18:36] <jonsowman> TangoAlpha: I can do an XML for you in a while
[18:36] <jonsowman> I assume that's what you're after?
[18:36] <TangoAlpha> great
[18:36] <TangoAlpha> i guess it is
[18:36] <jonsowman> righto, if you can PM me a couple of example telem strings, nominal frequency, baud, shift, stop bits, bits per char
[18:36] <TangoAlpha> i think my flight computer will now http get lat/long etc. via gprs :-)
[18:37] <jonsowman> oh and field descriptions
[18:37] <jonsowman> I could have sworn I did an XML for you the other day... perhaps I'm going mad
[18:38] <TangoAlpha> ah, have i got the wrong server?
[18:38] <Elijah_> Does spacenear.us work with APRS, or where is it getting the data?
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[18:39] <TangoAlpha> i'm looking to send HTTP GET messages directly to spacenear.us rather than decoding radio signals
[18:39] <jonsowman> oh yes I remember now
[18:40] <jonsowman> are your strings formatted in UKHAS format?
[18:40] <TangoAlpha> some XML was done for me the other day but it was for the robertharrison.com server i believe
[18:40] <jonsowman> TangoAlpha: there is no config doc for spacenear
[18:40] <TangoAlpha> i've sent a sample via PM
[18:41] <jonsowman> TangoAlpha: you've sent the URL to which you're making the GET request
[18:41] <TangoAlpha> is there a reason why my tracking data isn't working then?
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[18:41] <jonsowman> indeed, though it's non-obvious
[18:42] <jonsowman> I remember suggesting last time that you make an HTTP post request to robertharrison.org/listen/listen.php
[18:42] <jonsowman> as I seem to remember you saying that your incoming telemetry was in UKHAS format
[18:42] <TangoAlpha> yes, you did. someone else then suggested i could send directly to the spacenear.us server instead
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[18:42] <TangoAlpha> rather than using robertharrison.org as a "go-between"
[18:42] <jonsowman> well you could, but you're bypassing all the checksum verification and field verification
[18:43] <jonsowman> robertharrison.org is the distributed listener server and the system is designed such that data goes through it before going to spacenear.us, for verification purposes
[18:43] <TangoAlpha> the data is being checksummed and verified before i creaste the HTTP GET statement
[18:44] <TangoAlpha> ok, i can swap back to robertharrison.org
[18:44] <jonsowman> hmm, I can't see why that GET req fails
[18:44] <jonsowman> hang on
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[18:46] <jonsowman> TangoAlpha: ah, got it
[18:46] <jonsowman> the field in the GET req should be "lon", not "long"
[18:47] <jonsowman> however I suggest you send the 'time' field as well
[18:47] <jonsowman> and perhaps 'callsign' for the callsign of the listener
[18:47] <jonsowman> anyway the data appears on spacenear
[18:48] <TangoAlpha> cheers, i've just fixed the lon/long
[18:48] <jonsowman> if you don't send time, the time will appear on spacenear like it does now
[18:48] <jonsowman> send the time as hhmmss
[18:48] <TangoAlpha> i'll go through robertharrison.org soon
[18:49] <jonsowman> righto
[18:49] <jonsowman> bbl
[18:49] <TangoAlpha> time=hhmmss
[18:49] <TangoAlpha> ?
[18:49] <jonsowman> correct
[18:49] <jonsowman> and callsign=TangoAlpha
[18:49] <jonsowman> if you want -- that's non-essential
[18:49] <jonsowman> if you do, spacenear will show your name against that point
[18:49] <jonsowman> right, dinner.
[18:50] <TangoAlpha> that's good because i can differentiate between the payload reporting directly and the radio that is being decoded and then sent
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[19:29] <Upu> evening
[19:31] <fsphil> hihihi
[19:31] <Upu> did the payload get recovered ?
[19:31] <fsphil> no word yet
[19:32] <Upu> k, shame it wasn't transmitting
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[20:01] <Lunar_Lander> hello
[20:01] <Lunar_Lander> why is PICAXE bad?
[20:01] <Lunar_Lander> :D
[20:04] <Lunar_Lander> brb
[20:04] <Lunar_Lander> for the meantime
[20:04] <Lunar_Lander> NEW! http://winzenflyer.wordpress.com/2011/04/21/tracking-wb8elk-11-april-17-2011/
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[20:32] <Lunar_Lander> silent evening?
[20:32] nelly11 (8afab1d8@gateway/web/freenode/ip. joined #highaltitude.
[20:32] <natrium_> ya mon
[20:33] <Lunar_Lander> xD
[20:33] <nelly11> Hello :)
[20:33] <Lunar_Lander> hello
[20:33] <Lunar_Lander> new balloonist?
[20:33] <nelly11> yup :)!
[20:33] <Lunar_Lander> yay
[20:33] <nelly11> I am working on a HAB experminet for my thesis
[20:34] <nelly11> *erperiment
[20:34] <Lunar_Lander> cool!
[20:34] <nelly11> lol *experiment
[20:34] <nelly11> got it right this time
[20:34] <Lunar_Lander> BSc, MSc or Ph.D.?
[20:34] <nelly11> Msc
[20:35] <Zuph> Sweet, nelly11, what kind of experiment?
[20:35] <nelly11> Whats not so cool is that I am a complete novice and dunno anything (or much) about communications
[20:35] <nelly11> Its a HAB experiment to be conducted as a precursor to a cubesat mission
[20:35] <Zuph> Oh, very cool. Long duration HAB, or up-and-down.
[20:36] <nelly11> basically i will carry the common instruments (GPS, camera etc) plus a payload which I hasnt been decided on. Some triple junction solar cells are a candidate payload and a gyro too. It will an up and down one as my uni hasnt done one before.
[20:37] <nelly11> We have to try and test the equipment in the stratosphere as this will give more realistic results than on the ground tests
[20:37] <nelly11> Also my tutor will like me to test a passive deployment mechanism
[20:37] <Zuph> Ah ha. Well, I think you've found the right place.
[20:37] <nelly11> :)
[20:38] <nelly11> Yea, someone directed me to this page. I have been reading some of the experiments that have been carried out
[20:38] <Lunar_Lander> where will this happen?
[20:39] <nelly11> but I think mine is slightly different. In most of the HABs, the balloon only transmits and doesnt receive....Mine has to be able to receive instructions from a ground station to deploy a mechanism...I am in cranfield university at the moment and I am wrking on the project with another student who will do the ground station
[20:39] <nelly11> tI think it will be deployed either here or in cambridge
[20:40] <Lunar_Lander> cranfield!
[20:40] <Lunar_Lander> do you know the people of the BEXUS CASS-E experiment?
[20:40] <nelly11> nope
[20:40] <nelly11> I only started this year
[20:40] <Lunar_Lander> oh ok
[20:41] <nelly11> Do you got o uni too?
[20:41] <Lunar_Lander> those people sent up a bacteria collector on the last year's BEXUS balloon
[20:41] <Lunar_Lander> yeah, University of Osnabruck, Lower Saxony, Germany
[20:41] <nelly11> Are you German?? If yes your english in incredibly good
[20:42] <Lunar_Lander> thank you!
[20:42] <Lunar_Lander> I am indeed
[20:42] <Lunar_Lander> :)
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[20:42] <nelly11> :)
[20:42] <Lunar_Lander> I'll brb
[20:42] <nelly11> ok
[20:42] <Lunar_Lander> but for the meantime you might like to read this: http://winzenflyer.wordpress.com/2011/04/21/tracking-wb8elk-11-april-17-2011/
[20:42] <nelly11> thanks
[20:49] <Lunar_Lander> you're welcome
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[20:50] <nelly11> do you do HAB experiments?
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[20:51] <Lunar_Lander> not really yet
[20:51] <Lunar_Lander> still thinking what you could do
[20:52] <Zuph> nelly11: Our whole balloon is an experiment :-p
[20:52] <nelly11> Ok......yup IM a bit confused...my initial plan was to copy some of the experiments on UKHAS :P...but then I realised that mine was slightly different as My balloon should receive comands too
[20:53] <Zuph> http://www.whitestarballoon.com/ and http://wiki.whitestarballoon.com
[20:53] <nelly11> thanks
[20:54] <Lunar_Lander> may I ask a question?
[20:55] <nelly11> yup
[20:56] <Lunar_Lander> what exactly is a Passive Deployment Mechanism?
[20:57] <Matt_soton> apex has simple two way comms on it that seems to work quite well
[20:57] <nelly11> Its one that isnt controlled actively....for example, an antenna is held down on a balloon by some wires. We send a command to the ballon from the ground and instruct an equipment on the balloon to cut the wires and release the antenna. An active mechanism on the other hand will be to use an electromagnet for example to hold down and release the antenna
[20:57] <nelly11> but it consumes power
[20:58] <nelly11> passive=no power active=power
[20:58] <Lunar_Lander> ah
[20:58] <Lunar_Lander> the russians had that on their first venusian landing capsules
[20:58] <Lunar_Lander> they didn't know if there would be big lakes on Venus
[20:59] <Lunar_Lander> and thus they made a clamp of sugar which would be solved by the water and then the antenna would deploy
[20:59] <Randomskk> those crafty russians
[20:59] <natrium_> oh those russians
[21:00] <nelly11> pretty smart
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[21:00] <Lunar_Lander> hello RocketBoy
[21:00] <Lunar_Lander> yeah nelly11
[21:01] <Lunar_Lander> you are lucky! because the balloon retailer for europe just entered
[21:01] <RocketBoy> so they say
[21:01] <nelly11> :D
[21:02] <RocketBoy> as it happens I have just taken delivery of loads of balloons
[21:02] <Lunar_Lander> cool!
[21:02] <nelly11> Got a question actually..how long will it normally take to get items delivered if i ordered from the UK?
[21:03] <Lunar_Lander> who was it again who wanted to fly a Hwoyee balloon?
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[21:05] <RocketBoy> nelly11: where are U?
[21:05] <nelly11> I am in cranfield
[21:05] <nelly11> Or bedfordshire
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[21:06] <RocketBoy> well if you are ordering from me about 2 days
[21:07] <nelly11> Cool! What else do you sell? Balloons only?
[21:08] <nelly11> Can I get your details then so I can contact you when Im ready to order? :)
[21:09] <RocketBoy> sure - email addy is steve @ btinternet . com
[21:10] <nelly11> thanks
[21:10] <Lunar_Lander> RocketBoy btw, how do you order your balloons from Kaymont?
[21:11] <Lunar_Lander> as they don't answer mails that often
[21:12] <RocketBoy> ah - communicating with kaymont is an art - what balloons do you need?
[21:12] <Lunar_Lander> oh just asking
[21:13] <Lunar_Lander> now I don't need new balloons
[21:13] <Lunar_Lander> :)
[21:13] <Lunar_Lander> and if I need them, I'll let you know
[21:13] <Lunar_Lander> :)
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[21:19] <nelly11> its gone a bit quiet here
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[21:20] <Lunar_Lander> yeah
[21:20] <nelly11> fed up of balloons?? :p
[21:20] <Lunar_Lander> but it also before you came in
[21:20] <Lunar_Lander> there are so many potential experiments
[21:20] <Lunar_Lander> but most are in a state you can't use
[21:20] <nelly11> lol for a minute I thought you said it was after i came haha
[21:21] <Lunar_Lander> because I read those papers from the 1930's and so
[21:21] <Lunar_Lander> xD
[21:21] <Lunar_Lander> and those stuff is too heavy and so on
[21:21] <Lunar_Lander> but I heard that it could be transformed into today's technology
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[21:22] <nelly11> where did u read that?
[21:23] <Lunar_Lander> for example in the quarterly journal of the royal meteorological society
[21:23] <Lunar_Lander> there was for example an air sample that was activated by the burst of the balloon
[21:23] <Lunar_Lander> *sampler
[21:24] <nelly11> oh ok
[21:24] <Lunar_Lander> do you want to read that paper?
[21:24] <nelly11> yes :)
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[21:27] <Lunar_Lander> in progress :)
[21:27] <nelly11> ok
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[21:30] <Lunar_Lander> http://www.mediafire.com/?ichui301engh6ul
[21:31] <nelly11> danke! (if thats a real word lol)
[21:31] <nelly11> I think its German....is it?
[21:31] <Lunar_Lander> yes it is!
[21:31] <Lunar_Lander> :)
[21:31] <Lunar_Lander> you are welcome
[21:31] <Lunar_Lander> well done :)
[21:32] <nelly11> :)
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[21:33] <nelly11> I like that pdf..lots of images and not too many paragraphs to read...if only mordern journals were like this :)
[21:34] <Lunar_Lander> yeah :)
[21:34] <nelly11> I'm gonna leave now (going to celebrate the end of my exams today :D). Nice talking to you Lunar_Lander. Goodnight
[21:35] <Lunar_Lander> you are welcome!
[21:35] <Lunar_Lander> :)
[21:35] <Lunar_Lander> good night
[21:35] <Lunar_Lander> was nice to talk to you too
[21:35] <Lunar_Lander> cu soon
[21:35] <nelly11> quick question....do I just type "quit" to leave haha
[21:36] <Randomskk> /quit
[21:36] <Lunar_Lander> do you use the webchat?
[21:36] <Randomskk> or just close the window or whatever
[21:36] <Lunar_Lander> yeah
[21:36] <nelly11> ok :)
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[21:40] <Lunar_Lander> oh nice
[21:40] <Lunar_Lander> today at 9 am UTC, I would have landed only 200 m from a motorway
[21:40] <Lunar_Lander> tomorrow will be almost the same trajectory, with a landing in the eastern Netherlands
[21:41] <Lunar_Lander> only about 50 m from a nice river called "Vecht"
[21:48] <Laurenceb> hmm this is interesting
[21:48] <Lunar_Lander> yea
[21:48] <Laurenceb> i suspect the lsm303dlh is using the same silicon from honeywell as the hmc5883L
[21:48] <Laurenceb> in which case it can actually do 160hz output data rate by using single conversion mode correctly
[21:49] <Lunar_Lander> Laurenceb today I was asked if a HAB could measure dust and aerosols
[21:49] <Lunar_Lander> may I link him to your PDF?
[21:50] <Laurenceb> sure np
[21:50] <Lunar_Lander> cool
[21:50] <Lunar_Lander> may I also try to pick up your work where you left it?
[21:52] <Lunar_Lander> I mean with the electrostatic sampler
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[21:57] <Laurenceb> thats why i put it on the internets :P
[21:57] <Lunar_Lander> xD
[21:58] <Laurenceb> as part of a university project?
[21:58] <Lunar_Lander> yeah
[21:59] <Lunar_Lander> my balloon is partly with my university
[21:59] <Laurenceb> cool
[22:01] <Lunar_Lander> yea :)
[22:01] <Lunar_Lander> we could also try this
[22:01] <Lunar_Lander> one moment
[22:01] <Lunar_Lander> http://www.mediafire.com/?r0wxqqgbxh9m7p2
[22:01] <Lunar_Lander> http://www.mediafire.com/?6id16rhqzh31c2g
[22:01] <SpeedEvil> Laurenceb: Why diddn't yours fly in the end?
[22:03] <Laurenceb> time - i had to start writing up rather than fly it
[22:03] <SpeedEvil> Ah.
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[22:06] <Lunar_Lander> but most of the hardware still exists right?
[22:06] <Lunar_Lander> and belongs to your uni now or so you said
[22:07] <Laurenceb> yeah
[22:07] <Laurenceb> probably in the junk room of dead projects :P
[22:08] <Laurenceb> Lunar_Lander: interesting paper
[22:08] <Laurenceb> have you come across field mills?
[22:09] <Lunar_Lander> yeah I heard of them
[22:10] <Laurenceb> i made one ages ago - had to wait for ages for a storm :P
[22:10] <Laurenceb> but it was really interesting, you could detect lighting - ground strikes and within the cloud
[22:11] <Laurenceb> actually see the discharges and charge redistributions on the output data
[22:14] <Laurenceb> http://www.wolframalpha.com/input/?i=plot+1%2F%280.01%2F%282*%280.00027%2Fsqrt%28P%29%2B0.01%29%29%29+from+P%3D0+to+P%3D0.01
[22:14] <Laurenceb> so i get crosshairs on the graph but i cant view the x,y point?! why
[22:14] Action: Laurenceb goes back to using gnuplot
[22:15] <Randomskk> gnuplot is clearly superior
[22:15] <Laurenceb> cant zoom either
[22:25] <Lunar_Lander> cool Laurenceb
[22:25] <Lunar_Lander> is that difficult to make?
[22:28] <Laurenceb> depends how well you want to do it
[22:28] <Laurenceb> mine was made from aluminium from a drinks can
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[22:28] <Laurenceb> dc motor and an op amp based amplifier
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[22:28] <Laurenceb> made it when i was about 12 :P
[22:29] <Lunar_Lander> cool!
[22:29] <jcoxon> evening all
[22:29] <natrium_> hey jcoxon
[22:29] <natrium_> how are you>
[22:29] Nick change: natrium_ -> natrium42
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[22:30] <natrium42> jcoxon: what are those chase cars travelling right now?
[22:31] <jcoxon> hello
[22:31] <jcoxon> yeah they are people working on a spacenear.us style launch
[22:31] <jcoxon> they are using dl-fldigi to upload the data
[22:33] <natrium42> oh
[22:33] <natrium42> i was just wondering why the time info is off for chase cars
[22:34] <jcoxon> oh its because when i re-implemented it i didn't get round to doing time
[22:34] <jcoxon> i guess we should use server time
[22:35] Action: jcoxon might launch a balloon in a few hours
[22:35] <jcoxon> single foil balloon
[22:35] <jcoxon> with a tiny tiny payload
[22:36] <jcoxon> natrium42, perhaps spacenear.us shouldn't have boxes for chase cars
[22:36] <jcoxon> just show the car on the map
[22:36] <Randomskk> jcoxon: ! how tiny a payload?
[22:36] <natrium42> hmm, or just a tiny box?
[22:36] <jcoxon> 4g max
[22:36] <Randomskk> scrap of paper with a phone number?
[22:36] <Randomskk> :P
[22:36] <natrium42> hehe, that's tiny
[22:37] <jcoxon> its to keep me awake
[22:37] <jcoxon> planning to be awake at dawn
[22:39] <Randomskk> how come?
[22:39] <jcoxon> i'm on nights this weekend
[22:39] <jcoxon> so need to shift my sleep pattern to the day
[22:40] <Randomskk> portal 2 :P
[22:40] <jcoxon> xbox is for later...
[22:43] <natrium42> ;) ;)
[22:44] <jcoxon> natrium42, you'll be up for the next few hours...
[22:46] Action: MrCraig waves a good night wave
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[22:48] <Lunar_Lander> http://www.youtube.com/watch?v=7wgvifFcoxc
[22:50] <jcoxon> so the small foil balloon i've got will lift a RF bee + a 3v CR1225 coin cell
[22:51] <Randomskk> nice
[22:55] <natrium42> jcoxon: yeah, i will be up
[22:56] <jcoxon> so the question is whats the best way to track it
[22:56] <Randomskk> time the radio delay and use triangulation =D
[22:57] <jcoxon> i could make the rfbee tx on 434
[22:57] <jcoxon> its currently set to 868 at 10mW
[23:05] <Lunar_Lander> btw
[23:05] <Lunar_Lander> new post!
[23:05] <Lunar_Lander> http://winzenflyer.wordpress.com/2011/04/21/tracking-wb8elk-11-april-17-2011/
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[23:25] <jcoxon> hmmm not enough voltage from my coin cell
[23:25] <Zuph> Two coin cells!
[23:26] <jcoxon> my 85mAh lipo weighs 2,3g
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[23:29] <DanielRichman> power it with a potato battery
[23:30] <jcoxon> they are heavy!
[23:34] <natrium42> rofl
[23:34] <natrium42> baby carrots!
[23:40] <DanielRichman> hmm. Gonna need about three potatos to have the required voltage to run a ntx2 and an avr. I dunno how much current they'll require though.
[23:42] <DanielRichman> wikipedia gives some rough values. Something in the order of 100 potatoes would be required, I think.
[23:43] <DanielRichman> bbl
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[00:00] --- Fri Apr 22 2011