highaltitude.log.20110121

[00:00] <stilldavid> it was overwhelming
[00:00] <Zuph> heh
[00:00] <Zuph> :)
[00:00] <stilldavid> is Dan around?
[00:00] <stilldavid> I got most of the stuff he wanted
[00:00] <stilldavid> and stared at a lot more :)
[00:00] <Zuph> heh
[00:01] <Zuph> I'm not near him at the moment, but I will be in about 20 minutes
[00:01] <Zuph> I'm going to hope offline, and head down to the hackerspace.
[00:01] <Zuph> *ho[p
[00:01] <Zuph> **hop
[00:01] <stilldavid> phew.
[00:01] <stilldavid> okay, cool. I need to put some hours in here at work, but I'll start going through everything and getting everything prepped to send out
[00:03] <Zuph> Sounds awesome
[00:03] <Zuph> bbl
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[00:38] <Zuph> stilldavid: Evidently I'm the only White Star member willing to brave 3 inches of snow for our transatlantic dream :-p
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[00:42] <NigeyS> does anyone know if the lassen iq will be stable at just under 3v instead of 3.3?
[00:43] <Darkside> i wouldn't try it
[00:43] <Darkside> not when you're going to put the whole thing through a temperature stress test, which will probably cause the batteries to lower in capacity
[00:43] <NigeyS> i was hoping someone wasn't going to say that :/
[00:44] <Darkside> why can't you get 3.3v?
[00:44] <NigeyS> solution is another battery = another balloon
[00:44] <NigeyS> its a pico flight, the 1000mah lipo is only giving me 2.95 on the gps
[00:45] <Darkside> eek
[00:45] <Darkside> yeah i wouldn't try that
[00:45] <Zuph> Boost Converter?
[00:45] <NigeyS> hm possibly, hadnt thought of that
[00:48] <Zuph> Sparkfun is a little distant for you, but we've used these with success: http://www.sparkfun.com/products/9216
[00:49] <NigeyS> ah that's the 1, but thinking it through, the weight of a battery plus the converter .. itll be almost the same as an extra lipo
[00:50] <natrium42> Darkside: there?
[00:50] <Darkside> yep
[00:50] <natrium42> pm?
[00:50] <Darkside> yep
[00:50] <Zuph> NigeyS: If you want me to weigh that converter real quick, I've got one around here somewhere.
[00:51] <Zuph> I'm sure it weighs less than an extra lipo.
[00:51] <NigeyS> sure, if you dont mind, that would be great
[00:51] <NigeyS> anything under 4gms i can be ok with
[00:53] <Zuph> That converter in particular weighs 1.1g
[00:53] <NigeyS> wow, alot lighter than i thought, thanks zuph !
[00:53] <SpeedEvil> NigeyS: err - why are you only getting 2.95? You mean starting with a low battery voltage?
[00:54] <SpeedEvil> Li-po is quite flat at ~3V
[00:54] <NigeyS> well the lipo is shoving out bang on 3.7 but after hitting the vreg, and the diode, im getting 2.95 max out of the serial ttl
[00:54] <SpeedEvil> why diode?
[00:54] <NigeyS> james put it on .. so i dont blow things up i think
[00:55] <NigeyS> and i measured the diode drain, it was minimal, most of the loss is the vreg
[00:55] <SpeedEvil> Not in principle insane, but a polarised connector would sort that hastle.
[00:55] <SpeedEvil> The diode will be dropping at least 0.3V - even if shottky
[00:55] <SpeedEvil> shottky
[00:55] <NigeyS> well i got .27 max drain
[00:55] Action: SpeedEvil can never remember how to spell that
[00:56] <NigeyS> hehe its late you can be forgiven
[00:56] <SpeedEvil> naah.
[00:56] <SpeedEvil> I can never spell it anyway.
[00:56] <NigeyS> :p
[00:57] <NigeyS> actually scrap that a remeasure shows the lipo pumping out 4.07
[00:57] <NigeyS> but still 2.97 on the serial
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[01:08] <NigeyS> brb
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[02:29] <stilldavid> Zuph, still around?
[02:30] <Dan-K2VOL> stilldavid he's here yakking with a bunch of us at LVL1 about steam rockets
[02:30] <Zuph> pong stilldavid
[02:30] <Dan-K2VOL> how was the grand tour of NSBF's antiquities?
[02:30] <stilldavid> hah, very cool
[02:30] <stilldavid> Dan-K2VOL, it was ... crazy.
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[02:31] <stilldavid> the archives were exactly what you'd expect, really. lots of boxes in a sub-basement
[02:31] <Dan-K2VOL> sounds apropos
[02:31] <stilldavid> I think I got most of the stuff you put in the document, a handful of others, and I kind of want to to go back
[02:31] <Zuph> hehe
[02:32] <stilldavid> there were a bunch of 16mm films of ZP and other launches that I only scratched the surface of
[02:32] <stilldavid> http://www.flickr.com/photos/stilldavid/5373508823/
[02:32] <Dan-K2VOL> oh wow
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[02:32] <Zuph> wow!
[02:32] <stilldavid> they were a bit wary of me taking video of the footage, though :(
[02:33] <Dan-K2VOL> aww
[02:33] <Dan-K2VOL> wow dave that's really awesome though
[02:33] <stilldavid> anyway, I took about 800 photos of various reports and technical docs.
[02:33] <stilldavid> I'll try to go through them this weekend and get a .tar together to send around
[02:33] <Dan-K2VOL> very very nice
[02:34] <stilldavid> camera + laptop + tripod was the way to go, for sure
[02:34] <Zuph> excellent
[02:34] <Dan-K2VOL> how did the movies look? interesting
[02:34] <Dan-K2VOL> ?
[02:34] <Dan-K2VOL> nice
[02:35] <stilldavid> Dan-K2VOL, the movies were well-shot, really. from the ones I saw (3?) there was footage of lab tests (like checking for envelope leaks), launches and various tracking equipment
[02:35] <stilldavid> most of the stuff there was from the late 60s/70s
[02:36] <stilldavid> a video of a jet engine sucking up an envelope with less-than-spectacular results
[02:36] <Dan-K2VOL> WOW
[02:36] <Zuph> Awesome!
[02:36] <stilldavid> so yeah, I want to go back :)
[02:36] <Zuph> We want to go!
[02:36] <Dan-K2VOL> take us with you!
[02:36] <Dan-K2VOL> hahaha
[02:36] <stilldavid> did I mention I got a tour of the supercomputer?
[02:37] <Dan-K2VOL> lol no
[02:37] <Dan-K2VOL> did you see hurricanes whirling inside of it?
[02:37] <stilldavid> I forget the number, but they have a Cray something-or-other with lots of flops
[02:37] <SpeedEvil> That's a coincidence.
[02:37] <SpeedEvil> My laptop is propped up on a flip-flop.
[02:38] <stilldavid> An IBM Power 575 supercomputer, bluefire houses the new POWER6 microprocessor, which has a clock speed of 4.7 gigahertz. The system consists of 4,064 processors, 12 terabytes of memory, and 150 terabytes of FAStT DS4800 disk storage.
[02:39] <stilldavid> 76 teraflops
[02:47] <Darkside> anyone know what gain this dish would be? http://i.imgur.com/167gt.jpg
[02:48] <Dan-K2VOL> ha, no, but I used to have one just like it
[03:59] <natrium42> .
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[05:14] <Dan-K2VOL> . too
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[05:21] <Darkside> http://www.youtube.com/watch?v=CaBXdbJ0lb8&feature=feedu
[05:23] <natrium42> oooh, cool
[05:23] <natrium42> did you mke the mount yourself?
[05:25] <Darkside> nope
[05:26] <Darkside> this was lying around the department :P
[05:32] <natrium42> :)
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[06:24] <juxta_> ping shenki, Darkside
[06:24] <shenki> juxta_: hey
[06:24] <juxta_> heya
[06:24] <shenki> juxta_: was about to call you
[06:24] <juxta_> oh right
[06:24] <shenki> sorry about my no-show yesterday, i got caugh up
[06:24] <shenki> caught up
[06:25] <juxta_> no dramas
[06:25] <shenki> cool
[06:25] <shenki> are you at home now?
[06:25] <juxta_> no, i'm up in the country
[06:25] <shenki> ok
[06:25] <juxta_> but will be heading home soonish
[06:25] <juxta_> i was going to ask what the go was tonight
[06:26] <shenki> okay. would it be alright if i swung by to pick up the stuff that mark wants?
[06:26] <shenki> oh, as far as heading into the city? im probably going to have a quiet one, get the packing done
[06:26] <juxta_> sure, once i'm home :)
[06:28] <juxta_> will give you a ring when i'm in
[06:28] <juxta_> probably an hour or so
[06:33] <Darkside> hey juxta_
[06:33] <Darkside> up in the country?
[06:33] <Darkside> hah
[06:33] <juxta_> heya Darkside
[06:34] <Darkside> hey juxta_ , i've got a divisional scholarship confirmed :D
[06:34] <Darkside> i'm doing a PhD!
[06:34] <Darkside> w0000000000t
[06:34] <juxta_> nice work! :)
[06:38] <juxta_> im about to head off - chat to you some more about it tonight Darkside
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[06:44] <horm> so i herd u liek altitude
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[07:11] <natrium42> ...
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[07:39] <fsphil> hmm.. "You are being CTCP flooded from horm"
[07:40] <staylo> Some sort of DCC request portscan from him here
[07:47] <eroomde> morning all
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[07:48] <fsphil> mornin eroomde
[07:51] <eroomde> all well?
[07:51] <eroomde> I've had some fun reading up on HV generation for geiger tubes
[07:52] <natrium42> well, bed time :(
[07:52] <natrium42> night all
[07:53] <eroomde> see you natrium42
[08:00] <earthshine> morning
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[08:24] <Laurenceb_> sup
[08:31] <SpeedEvil> quaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaak.
[08:32] <Laurenceb_> the bus pirate power supply was pretty uninspiring
[08:33] <SpeedEvil> You'd hoped it had a unicorn inside?
[08:34] <Laurenceb_> i hoped it wouldnt oscillated with 50mv peak to peak
[08:34] <SpeedEvil> ah
[08:34] <Laurenceb_> *oscillate
[08:34] <Laurenceb_> explains why i was getting poor results with accelermoeters
[08:35] <SpeedEvil> :)
[08:36] <Laurenceb_> http://apple.slashdot.org/story/11/01/20/1547205/Fake-GSM-Base-Station-Trick-Targets-IPhones
[08:36] <Laurenceb_> never saw that one coming
[08:37] <Laurenceb_> nice fancy screen etc but the antenna and GSM implementation sucks
[08:37] <SpeedEvil> Umm.
[08:37] <SpeedEvil> As I understand it, most phones are vulnerable to that
[08:38] <Laurenceb_> if hes using openbts... i though must phones couldnt Tx in the uplink bands?
[08:38] <SpeedEvil> It's not running on a phone
[08:39] <SpeedEvil> It's running on a basestation that happens to run opensource code.
[08:39] <SpeedEvil> using usrp
[08:39] <Laurenceb_> ah
[08:39] <SpeedEvil> And 'low cost' = 2 grand IIRC
[08:39] <Laurenceb_> thought it was the hacked firmware thing
[08:43] <russss> the USRP is about £1100 with the correct parts to transmit on GSM
[08:43] <russss> someone's been playing around with one in the hackspace
[08:43] <SpeedEvil> I think they need other bits
[08:58] <fsphil> I'd be afraid to switch it on at that price
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[09:48] <eroomde> Laurenceb_: ping
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[10:07] <juxta> ping shenki
[10:14] <shenki> juxta: hellp
[10:14] <shenki> hello
[10:14] <juxta> heya
[10:14] <juxta> I'm home now, sorry it took a little while :)
[10:16] <SpeedEvil> you were recovering another payload?
[10:16] <SpeedEvil> Or something else?
[10:16] <juxta> nope, just felling and chopping up a tree
[10:16] <SpeedEvil> Ah.
[10:17] <SpeedEvil> So you're being a lumberjack. Are you OK?
[10:18] <juxta> yup!
[10:26] <fsphil> looks like the winds have settled down here, predictions are staying within 50km
[10:26] <fsphil> now if it will just stay that way for another month
[10:30] <Laurenceb> eroomde:pong
[11:12] <staylo> juxta's a lumberjack and he's OK...
[11:18] <juxta> a balloon-enthusiast lumberjack
[11:18] <Colin_> he launches by day and he launches by night
[11:29] <fsphil> oooh night launch
[11:29] <fsphil> someone should do that again
[11:29] <eroomde> fsphil: high recommended
[11:29] <eroomde> especially to catch dawn
[11:29] <Laurenceb> http://www.sparkfun.com/products/9810
[11:29] <Laurenceb> finally
[11:31] <eroomde> http://www.flickr.com/photos/cuspaceflight/3740096611/in/set-72157621752577188/lightbox/
[11:36] <fsphil> my notams always say 'in daylight hours'
[11:37] <fsphil> that's brilliant
[11:39] <eroomde> i think we ignored that bit
[11:39] <fsphil> hehe
[11:39] <fsphil> yea, they also said 100km range max :)
[11:44] <eroomde> actually i'm not sure ours mentioned daylight atall
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[11:48] <NigelMoby> Morning all
[11:49] <fsphil> mornin'
[11:52] <NigelMoby> Hey Phil
[11:56] <fsphil> I left truetty running overnight, got nothing
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[11:57] <NigeyS> meh
[11:58] <NigeyS> anyone know what those connectors are called that you find on pc fans? not the molex type, the other type ?
[11:59] <fsphil> the polarised ones?
[11:59] <NigeyS> yeah, theyre normally brown i think
[12:00] <fsphil> they's molex too, KK series
[12:00] <NigeyS> ohh, thankoo phil :D
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[12:02] <NigeyS> http://search.digikey.com/scripts/dksearch/dksus.dll?pname&site=us&lang=en&wt.mc_id=Dxn_US_US2010_Catlink&name=WM4201-ND
[12:02] <NigeyS> thats the 1 i think
[12:04] <NigeyS> wtf 100quid for the crimp tool :|
[12:09] <fsphil> you can get it much cheaper elsewhere
[12:09] <fsphil> mine cost 15 I think
[12:09] <fsphil> from ebay
[12:11] <NigeyS> phew, think the 1 on digikey must be made of gold!
[12:13] <fsphil> http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=120672520397
[12:13] <NigeyS> now thats more like it, a sensible figure lol
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[12:39] <Laurenceb> http://imagebin.org/index.php?mode=image&id=133702
[12:40] <Laurenceb> ^interesting
[12:40] <Laurenceb> ADXL345 @1KHz
[12:40] <Laurenceb> thats me lightly tapping on desk with the accel taped down
[12:40] <NigeyS> hey laurenceb
[12:40] <Laurenceb> sharp tap is over 2G peak
[12:41] <NigeyS> 2g for a tap ?
[12:41] <Laurenceb> at 12200 thats just prodding the desk with the end of my finger
[12:41] <Laurenceb> yes
[12:42] <Laurenceb> well flicking desk ~10cm away from the accel
[12:42] <NigeyS> bloody hell thats sensitive
[12:42] <SpeedEvil> What's the long-term look like?
[12:43] <SpeedEvil> 1/sqrt(shizzle)
[12:43] <Laurenceb> matches the datasheet how ive got a good power supply
[12:43] <Laurenceb> ~400ug/sqrt(Hz)
[12:44] <Laurenceb> on x and y, and 550 to 600 on z
[12:44] <Laurenceb> ambient vibrations are hard to filter out
[12:44] <Laurenceb> my pc fan in causing some noise
[12:45] <Laurenceb> its still a rather poor sensor - the best digital offerings from ST are 200ug
[12:46] <Laurenceb> ill try some motion integration soon as i find a decent way to mount it
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[12:47] <Darkside> hmm i need to get a 2g accelerometer to do elevation detection on my tracking dish
[12:47] <Darkside> Laurenceb: http://www.youtube.com/watch?v=CaBXdbJ0lb8&feature=feedu
[12:48] <Laurenceb> eeek arduino
[12:48] <SpeedEvil> Darkside: You shouldn't be wiggling it that fast.
[12:48] <Laurenceb> but yeah looks good
[12:48] <Darkside> it'll work
[12:48] <Darkside> SpeedEvil: i know :P
[12:48] <Laurenceb> whats it powered by?
[12:48] <Darkside> 12v battery
[12:48] <Darkside> i'm using some stepper drivers
[12:49] <Laurenceb> ah
[12:49] <Darkside> the arduino just sends the direction and step bits, everything else is controlled by the stepper drivers
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[12:49] <Darkside> so i can do microstepping and such
[12:50] <Darkside> the arduino is just there as its easy to interface with and do prototyping / testing
[12:51] <NigeyS> FAA to pilots: Expect 'unreliable or unavailable' GPS signals.
[12:52] <Darkside> saw that
[12:52] <NigeyS> hm wonder what theyre testing exactly
[12:52] <Darkside> looks interesting
[12:52] <NigeyS> enemy gps disruptor maybe? .. *shrug*
[12:52] <SpeedEvil> NigeyS: I vaguely recall the diameter stated in the NOTAM is approximately the same as the 'spot beam'
[12:53] <SpeedEvil> NigeyS: This is a high power - comparatively - dish that can - at least - send high power M-code to an area of operations.
[12:53] <NigeyS> ahh yes it looks like it
[12:53] <NigeyS> its been updated for california to ..
[12:54] <SpeedEvil> The shape of the NOTAM would be more or less consistent I think with them pointing the spot beam at one point on the earth, and meaconing from it.
[12:54] <Darkside> i wonder how badly it will affect ground signals
[12:55] <NigeyS> interesting stuff
[12:55] <NigeyS> wonder if its anything to do with that new satellite they put up not so long ago aswell.
[12:56] <SpeedEvil> Darkside: It has a 250nm radius at 4000 feet - so I assume that's practically the radius on the ground
[12:56] <Darkside> yeah
[12:56] <Darkside> interesting
[12:56] <SpeedEvil> A fun fact is that the internet makes many of the 'conventional' ways of degrading GPS useless.
[12:56] <NigeyS> no mobile phone gps, people will be lost, taxi drivers will have to use a MAP and compass..lol
[12:57] <SpeedEvil> Or useless to a skilled opponent with a small differential GPS in the area, and internet connectivity to it
[12:58] <SpeedEvil> The conventional ways just introduce an error into the orbital position reports. But if you isupply your own orbital models, and models of how the clock is vaying at a given time, you can correct for simple orbit or clock wander approaches
[12:58] <SpeedEvil> Also - nonconventional.
[12:58] <SpeedEvil> Google, bing, et al now have ~1m imagery of many parts of the world.
[12:59] <SpeedEvil> This is quite good enough to accurately locate yourself, if you're a missile.
[13:00] <NigeyS> scary thought though
[13:00] <NigeyS> using google earth / maps to aim a missile :|
[13:03] <NigeyS> In late December, the agency’s Space Operations Mission Directorate requested the shuttle and International Space Station programs take the necessary steps to maintain the capability to fly Atlantis on the STS-135 mission.
[13:03] <NigeyS> yey!
[13:04] <SpeedEvil> Fuck
[13:04] <SpeedEvil> oh
[13:04] <SpeedEvil> not that bad
[13:04] <SpeedEvil> I leapt to the conclusion they were keeping shuttle flying.
[13:04] <NigeyS> haha if only, be a shame to see the shuttle go :(
[13:05] <SpeedEvil> In principle, in some ways yes.
[13:05] <SpeedEvil> In practice - shuttle is a hideous waste of cash that's basically only useful for pork.
[13:06] <NigeyS> yeah i guess, but if is probably the best feat of engineering in history so far
[13:06] <NigeyS> it*
[13:07] <NigeyS> i see nanosail status is updated, sband is on
[13:08] <SpeedEvil> The shuttle was the best feat of fucked up politics.
[13:08] <SpeedEvil> The whole design was basically driven around a wacky requirement to get support from the DOD.
[13:08] <NigeyS> unfortunately wherever congress gets a say in the budget its always going to be political :/
[13:09] <SpeedEvil> That is - to launch a satellite into polar orbit, from a USA landing strip, and recover inside the USA without making more than one orbit.
[13:09] <SpeedEvil> This is what meant it had big wings.
[13:09] <NigeyS> that idea soon went out the window
[13:10] <SpeedEvil> Yes.
[13:10] <NigeyS> wonder when we'll eventually move on from liquid fuel to .. has to be a long way away still :(
[13:11] <SpeedEvil> Liquid fuel isn't the problem.
[13:11] <SpeedEvil> You can arguably get an order of magnitude cost reduction below what spaceX are projecting with liquid fuel.
[13:12] <NigeyS> i disagree, liquid fuel is .. well .. heavy ..
[13:13] <Upu> HOTOL :)
[13:13] <SpeedEvil> http://authors.library.caltech.edu/3303/1/PARaipcp04a.pdf
[13:13] <SpeedEvil> Is in principle another alternative.
[13:13] <SpeedEvil> Electric rockets.
[13:14] <NigeyS> ooo im gonna read that with a title like that!
[13:14] <SpeedEvil> Boosted by _large_ 100-300GHz transmitters on earth
[13:14] <Upu> get to 50000 feet using lots of balloons :)
[13:14] <SpeedEvil> Also - another interesting aspect.
[13:14] <SpeedEvil> The same technology can power airliners.
[13:15] <NigeyS> lol upu good plan !
[13:15] <NigeyS> SpeedEvil, as in regular commercial flight ?
[13:15] <SpeedEvil> NigeyS: Yes. You do need a regrettably large number of ground stations. But it's not really implausible.
[13:15] <SpeedEvil> At least for intracontinental flight.
[13:16] <NigeyS> hmm i guess, or we can just find a kill switch for gravity? :D
[13:16] <SpeedEvil> That would be nice.
[13:17] <NigeyS> yeah, escape velocity.. no problem, just kick me in the nads and off i go to space..lol
[13:17] <SpeedEvil> I note that at this time, nobody has actually tested that antimatter falls down.
[13:17] <NigeyS> you mentioned that the other day, can that actually be tested?
[13:18] <NigeyS> concidering the fact theyve only got 38atoms of the stuff for a few seconds
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[13:21] <SpeedEvil> not yet.
[13:21] <SpeedEvil> It's actually really hard to test.
[13:22] <SpeedEvil> Because gravity is such a teeny force, compared to all the other disturbing forces.
[13:23] <NigeyS> yeah compared to the electromagnetic force gravity is kinda puny
[13:25] <NigeyS> im going to have to get a notams for this pico flight, extra battery = extra large balloon :( above the 2m limit
[13:25] <SpeedEvil> :/
[13:26] <NigeyS> unless my gps will run on 2.7v which is highly unlikely
[13:27] <SpeedEvil> I'd say make sure you've got it connected right, then jumper the diode
[13:28] <NigeyS> i probably will, ordered another batt and the ftdi stuff so can get a better idea on what will and wont work tomorrow
[13:28] <SpeedEvil> :)
[13:32] <fsphil> a single foil balloon might work better than the multiples, and still fit into the 2m exception rules
[13:34] <Darkside> oh speaking of which guys
[13:34] <Darkside> can you get spherical foil balloons
[13:34] <Darkside> some radar guys at uni want a radar target they can put up on a tether
[13:39] <SpikeUK> Darkside - Unlikely! Foil is made flat. Could make out of panels but it would be a sod to seal I should thing.
[13:40] <SpikeUK> s/thing/think
[13:40] <Darkside> yeah
[13:40] <Darkside> damn
[13:40] <Darkside> might have to hoist up some kind of frame structure
[13:40] <SpeedEvil> I have pondered a foil balloon.
[13:40] <SpeedEvil> And done some tests.
[13:41] <SpeedEvil> Hot-melt lap-joints work wonderfully
[13:41] <SpikeUK> Are they looking for a reflective sphere?
[13:41] <SpeedEvil> with the barest smear of hot-melt, and the joint ironed shut.
[13:41] <SpikeUK> SpeedEvil - ok
[13:42] <SpeedEvil> Though I suspect it may have issues at -40C - though it seemed fine at -20c
[13:42] <SpeedEvil> so maybe not
[13:44] <Darkside> SpikeUK: yes
[13:44] <Darkside> needs to be a sphere, as a corner reflecter is quite angle-dependent
[13:45] <SpeedEvil> A sphere sphere, or a lumpy sphere
[13:46] <SpeedEvil> you can get fairly spherical mylar balloons
[13:46] <Darkside> yeeeeeah
[13:46] <SpeedEvil> I'm very unsure how radar reflective those woul dbe
[13:46] <Darkside> a sphere sphere would be nice
[13:46] <Darkside> we have a fibreglass target, which is a 1% sphere i think
[13:46] <Darkside> whatever the measure it, it's good
[13:46] <Darkside> but its too heavy, and too small
[13:49] <SpeedEvil> What frequency of radar?
[13:52] <SpeedEvil> Beachball + http://cgi.ebay.co.uk/40-Gold-Leaf-Design-Gliding-Art-UK-SELLER-/190492394744?pt=UK_Crafts_Other_Crafts_EH&hash=item2c5a3b44f8
[13:52] <Darkside> hahahahaha
[13:52] <Darkside> bigger then a beachball i think
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[13:54] <Darkside> http://en.wikipedia.org/wiki/File:PAGEOS_Satellite_-_GPN-2000-001896.jpg
[13:54] <Darkside> do want
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[13:55] <SpeedEvil> http://en.wikipedia.org/wiki/Project_Echo
[13:57] <Darkside> yeah, i want one
[14:05] <NigeyS> fsphil, i cant find a single foil balloon larger than 36"
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[14:10] <Laurenceb> aha
[14:10] <Laurenceb> i have position solutions working
[14:10] <Laurenceb> its actually very hard, slight wobbling screws up the result a lot
[14:11] <SpeedEvil> What's the static drift like?
[14:11] <Laurenceb> http://i.imgur.com/KLkQ8.png
[14:11] <Laurenceb> very low - its wobbling of the cardboard box im taped it too that causes the issue
[14:12] <NigeyS> you tried to sign your name? :p
[14:12] <SpeedEvil> I mean if you actually nail it to a table
[14:13] <Laurenceb> gluing it to a plate might work
[14:15] <NigeyS> In 1966, a GHOST balloon circled the Earth in 10 days at 42,000 feet
[14:15] <NigeyS> nicey
[14:16] <Laurenceb> CNES did 86 days with a MIR
[14:17] <NigeyS> :o
[14:35] <Laurenceb> http://ballonsolaire.pagesperso-orange.fr/en-historique3.htm
[14:37] <Laurenceb> http://ballons.cnes.fr:8180/html/mir/resmi_gb.htm
[14:37] <Laurenceb> actually 'only' 69 days
[14:38] <Laurenceb> http://ballons.cnes.fr:8180/index2.html
[14:38] <Laurenceb> interesting, lots of flash tho
[14:39] <Laurenceb> aha http://ballons.cnes.fr:8180/html/ <-looks more usable :P
[14:40] <NigeyS> tnx laurenceb :D
[14:41] <Laurenceb> http://ballons.cnes.fr:8180/images/photo/p7.jpg
[14:42] Action: eroomde is having an extraordinarily interesting time learning about thunderstorms
[14:43] <NigeyS> they make you wet !
[14:43] <NigeyS> hm there was another delta 4 launch yesterday for the NRO
[14:44] <Laurenceb> http://ballons.cnes.fr:8180/html/vehic.htm < good theory explanation
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[15:20] <fsphil> duke4 has a release date.. isn't this one of the signs of the end of the world?
[15:22] <NigeyS> yups, we're all doomed
[15:23] <StrayVoltage> Oh snap.
[15:25] <NigeyS> hey StrayVoltage
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[15:54] <Laurenceb> http://i.imgur.com/ks0hF.png
[15:54] <Laurenceb> fixing accel to a plate helps
[15:56] <NigeyS> seems alot better than the previous 1
[15:58] <Laurenceb> its quite hard to make it work
[15:58] <Laurenceb> its hax to be kept level, and also sudden jerks dont get digitsed correctly
[15:59] <Laurenceb> tracing out shapes with just an accel is pretty impractical
[16:00] <Laurenceb> moving on a plate tends to make it stick to the table and then move suddenly with large bursts of acceleration
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[16:22] <NigeyS> sounds like you've got your work cut out there Laurenceb
[16:23] <NigeyS> hey Dan-K2VOL
[16:25] <Zuph> NigeyS: He must not have his iPad read IRC aloud today :-p
[16:25] <NigeyS> hehe
[16:25] <NigeyS> hey Zuph
[16:27] <Zuph> hey NigeyS
[16:28] <Zuph> How goes the HABing this morning?
[16:31] <NigeyS> all good so far waiting for parts now
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[16:50] <Dan-K2VOL> Hey NigeyS, yeah been off installing a whiz-bang Aoyue Desoldering station
[16:50] <Dan-K2VOL> It looks like it requires more daily maintenance than it'll be worth
[16:52] <Zuph> Ooh, sneaky reverse engineering happening here.
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[16:54] <Dan-K2VOL> Oh?
[16:54] <Zuph> You.
[16:54] <Dan-K2VOL> Lol right, this is for replacing broken battery clips on remotes
[16:54] <Dan-K2VOL> It's the solder sucking gun
[16:54] <Zuph> Also, WB8ELK's antenna is making finding a box tricky. Think it'll do any damage if it gets stowed with a slight bend?
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[16:55] Nick change: SpikeUK_ -> SpikeUK
[16:58] <Zuph> Dan-K2VOL
[17:01] <Dan-K2VOL> Hey
[17:01] <Dan-K2VOL> bending will be fine
[17:01] <Dan-K2VOL> Curlit in a knot if you want
[17:01] <Dan-K2VOL> Its resillient
[17:03] <Dan-K2VOL> Zuph
[17:05] <Zuph> pong
[17:12] <Dan-K2VOL> That go ok?
[17:15] <Zuph> Yep. I'm going to head to the post office here in about an hour.
[17:15] <Zuph> brb
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[17:21] <fsphil> went out to have another go at nanosat, and just as the pass was beginning the 817 battery ran out :)
[17:21] <fsphil> nanosail even
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[17:47] <Zuph> Need to get a yagi for my ht.
[17:49] <fsphil> at least I know truetty works, there's a sample capture on the website to test with
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[18:03] <NigeyS> unlucky phil :(
[18:03] <NigeyS> evening GW8RAK
[18:03] <GW8RAK> Hi NigeyS
[18:03] <GW8RAK> How's things?
[18:03] <NigeyS> pretty good sir, and you ?
[18:03] <GW8RAK> Trying to find time here to get back on the project.
[18:03] <GW8RAK> Did 57 hours work from Monday to last night, so had the day off
[18:04] <GW8RAK> May get the soldering ironed turned on tonight
[18:04] <NigeyS> crikey, dont go overdong it will ya !
[18:04] <GW8RAK> Last minute panic
[18:05] <GW8RAK> Hopefully they'll pay quickly
[18:05] <NigeyS> fingers crossed!
[18:06] <GW8RAK> Can't decide how much effort to put into tarting up the circuit board for the payload.
[18:06] <NigeyS> well, i think this pico board is going to have to go on a serious diet
[18:06] <GW8RAK> I'm tempted to miniaturise it as much as possible, but then I think that since size isn't important, it's not worth worrying about
[18:07] <GW8RAK> I'd like to fit it into a 50mm cube if possible
[18:07] <NigeyS> oo nice and tiny
[18:08] <GW8RAK> A multiple stack of GPS, processor, psu and connection board
[18:10] <NigeyS> which gps you gone for ?
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[18:59] <Dan-K2VOL> zuph, fancy seeing you on IPv6
[19:03] <Zuph> Dan-K2VOL: Glad you noticed.
[19:04] <Zuph> I set up a tunnel a long time ago, and it has worked flawlessly ever since.
[19:10] <Zuph> Dan-K2VOL: Also, just got back from the post office
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[19:36] <Dan-K2VOL> Zuph Good news? They didn't think it was a bomb?
[19:37] <Zuph> Heh, nope, they took it.
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[20:51] Action: NigeyS drops a pin
[20:51] <Upu> sssh
[20:51] <NigeyS> oops
[20:53] <Hibby> we were playing the silent game till you ruined it.
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[20:55] <NigeyS> sowwy :(
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[21:04] <fsphil> HEY EVERYONE HOW'S ... oh sorry...
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[21:06] <Hibby> lol.
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[21:09] <Lunar_Lander> hello
[21:10] <NigeyS> lol phil
[21:10] <NigeyS> hey Lunar_Lander
[21:10] <Lunar_Lander> how's life :)?
[21:10] <NigeyS> all good, and you ?
[21:11] Nick change: laurence_ -> Laurenceb_
[21:11] <Lunar_Lander> mixed I have to say
[21:11] <Lunar_Lander> there is that amateur radio for schools club
[21:12] <Lunar_Lander> and they had said: "OK, we could cooperate and you could fly your balloons under our insurance"
[21:12] <Lunar_Lander> now I heard through someone else, that they have "doubts" about my plan
[21:12] <Lunar_Lander> on the other hand, they did not react on e-mails for several months
[21:13] <GW8RAK> You are not alone Lunar_Lander. I was talking to a local school with very little response. Yet they claimed to be "excited" by the idea
[21:16] <Lunar_Lander> yeah
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[21:17] <Lunar_Lander> the thing is that all those people I asked about sending experiments in are waiting
[21:17] <Lunar_Lander> and I had hoped that the tech side would be all ready by march or so
[21:22] <Dan-K2VOL> You may want to contact ANSR, they have done a LOT of work with schools
[21:22] <Dan-K2VOL> Lunar_Lander ^^
[21:24] <Lunar_Lander> what is ANSR?
[21:24] <Lunar_Lander> ah I found it
[21:24] <Lunar_Lander> the thing is that insurance stuff
[21:25] <Lunar_Lander> when I first called flight safety, they told me that I would be responsible for insuring the flight myself
[21:25] <Dan-K2VOL> who's flight safety?
[21:25] <Dan-K2VOL> your local ATC?
[21:25] <Lunar_Lander> yes, the "Deutsche Flugsicherung"
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[21:38] <Lunar_Lander> thing is
[21:38] <Lunar_Lander> should I fly w/o insurance
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[21:47] <Dan-K2VOL> Most american groups to Lunar
[21:47] <Dan-K2VOL> We have had extensive difficulty trying to get insurance for the White Star
[21:47] <Dan-K2VOL> And are flying without
[21:47] <Lunar_Lander> yeah
[21:48] <Lunar_Lander> the argument is though, that central europe is populated quite densely
[21:48] <Lunar_Lander> but I think that shouldn't be the problem
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[22:00] <Laurenceb_> http://gb.mouser.com/ProductDetail/Cypress-Semiconductor/CYIH1SM1000AA-HWCS/?qs=sGAEpiMZZMs0JOhy9PM0UXE7o6RbrK8EvlYiFqYkW5U%3d
[22:00] <Laurenceb_> nice cheap star tracker
[22:01] <Laurenceb_> /s
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[22:05] <NigeyS> evening James
[22:06] <Lunar_Lander> hello
[22:07] <jcoxon> evening
[22:07] <NigeyS> james pico has turned into sumo :|
[22:07] <jcoxon> oh dear
[22:07] <jcoxon> i read
[22:08] <jcoxon> its cause of your regulator
[22:08] <NigeyS> yup
[22:08] <jcoxon> swap it for a ldo
[22:08] <NigeyS> any idea which specific 1 will play nice with the rest of the board ?
[22:08] <jcoxon> it'll have to be a little bit of a dirty hack
[22:09] <jcoxon> as i doubt the pinout will line up
[22:09] <NigeyS> ah dammit
[22:09] <jcoxon> you'll be looking for one that outputs 3.3v and does about 200mA
[22:09] <jcoxon> thats okay
[22:09] <jcoxon> how about short wires
[22:09] <jcoxon> to the regulator on the side
[22:10] <NigeyS> thats doable
[22:25] <jcoxon> going to run a test of my new code tomorrow
[22:25] <jcoxon> see how long it lasts
[22:25] <NigeyS> great stuff fingers crossed :D
[22:26] <NigeyS> have you added much to it ?
[22:26] <jcoxon> yeah shutting down the gps at night
[22:27] <NigeyS> ah yeah you were testing that yesterday iirc
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[22:33] <NigeyS> hey juxta
[22:33] <juxta> morning NigeyS
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[23:18] <Lunar_Lander> damn I missed him again
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[23:35] <NigeyS> hey zuph
[23:36] <Zuph> hey NigeyS
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[23:40] <Lunar_Lander> NigeyS and how are your projects progressing?
[23:40] <NigeyS> pretty good so far, picochu is almost built .. and ats is half done .. so slowly progressing
[23:42] <Lunar_Lander> yeah, like here
[23:42] <Lunar_Lander> and that insurance battle
[23:43] <NigeyS> yeah i read that earlier, insurance seems to be a royal arseache
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[23:46] <Zuph> Oh, it is.
[23:46] <Lunar_Lander> I'll try to get some info from local insurance offices about the possibilities
[23:46] <Lunar_Lander> but maybe there are no options at all to get this thing covered
[23:56] <Lunar_Lander> or so
[23:56] <Lunar_Lander> it should be like in the US
[23:56] <Lunar_Lander> where you don't even need to ask flight safety to fly small balloons
[23:57] <Zuph> Hah
[23:58] <Zuph> I'm not so sure that the laws in the US are too sound either :-p
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[00:00] --- Sat Jan 22 2011