highaltitude.log.20080516

[00:00] <jcoxon> :-)
[00:00] <Laurenceb> oh it has usb
[00:01] <Laurenceb> ok nvm, I was thinking of something else, very nice
[00:01] <jcoxon> its a nice solution
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[00:10] <fergusnoble> edmoore, back yet?
[00:11] <natrium42> he's quick to disappear
[00:14] <natrium42> OK, tracking is online!
[00:14] <natrium42> http://www.packagemapping.com/?action=track&shipper=dhl&tracknum=9263635743&uniqueID=&
[00:15] <natrium42> not a balloon though XD
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[00:22] <edmoore> fergusnoble: back
[00:22] <edmoore> sorry it was a long phone call
[00:23] <edmoore> pure bravado
[00:23] <edmoore> but if you want to.... well I'm not sure i do as it'd be in 5 hours time
[00:23] <edmoore> but if you are desperate, it can be done
[00:24] <edmoore> although to be fair i should actually do some work for this 9am lecture now, as it deserves some
[00:25] <fergusnoble> ok, cool beans
[00:25] <fergusnoble> go for 10 then
[00:25] <fergusnoble> ok, sleep
[00:25] <fergusnoble> bye
[00:25] <edmoore> 10.10
[00:25] <fergusnoble> ok
[00:25] <edmoore> as i have to get from dept to you
[00:25] <edmoore> hang on wait
[00:26] <edmoore> could I drop the box of stuff with you some time before 9?
[00:26] <edmoore> actually don't worry
[00:26] <edmoore> i can keep hold of it
[00:26] <edmoore> ok cya
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[02:07] <X-Art-X> Hi Guys :)
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[02:11] <akawaka> hey
[02:11] <X-Art-X> hi again.
[02:11] <X-Art-X> You are the guy who's camera batteries went flat?
[02:12] <akawaka> yeah
[02:12] <akawaka> thats my official title
[02:12] <X-Art-X> Lol. TGWCBWF
[02:12] <X-Art-X> You pointed out a particular radio modem.
[02:13] <akawaka> the radiometrix one?
[02:13] <akawaka> uhx-1?
[02:13] <X-Art-X> Yet it looks like your balloon drifted more than 60Km.
[02:13] <X-Art-X> Yes.
[02:13] <X-Art-X> Did you send GPS sentences stright to the modem without any processing,
[02:13] <X-Art-X> or did you use amobile phone as well.
[02:13] <X-Art-X> ?
[02:14] <akawaka> didn't use that modem
[02:14] <akawaka> we used a microtrak aprs transmitter
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[02:14] <X-Art-X> no phone?
[02:14] <akawaka> http://www.byonics.com/microtrak/mt8000fa.php
[02:14] <akawaka> phones are pretty useless for our purposes
[02:15] <akawaka> they don't work at altitude and our predicted landing area has very bad coverage
[02:15] <akawaka> rural california is a vast bunch of nothing
[02:15] <X-Art-X> thinking of a backup, not primary. Mine will probably land out of range.
[02:15] <X-Art-X> I have one to sacrifice,
[02:16] <X-Art-X> and it's down to a PCB and antenna.
[02:16] <X-Art-X> It will require mucking around to process GPS data and make the calls.
[02:16] <X-Art-X> sending GPS data straight to a modem sounds much easier.
[02:17] <X-Art-X> I'm all for laziness if it can be as effective.
[02:22] <X-Art-X> .
[02:22] <X-Art-X> The Radiometrix model you linked to has "Dumb Mode"... Not joking, check the PDF.
[02:22] <X-Art-X> Do the devices at each end really think they are connected by a straight serial cable?
[02:23] <X-Art-X> It would seem possible that a laptop PC listening to that data should think that it's
[02:23] <X-Art-X> connected straight to the GPS in the balloon.
[02:23] <X-Art-X> ?
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[14:18] <edmoore> hi jcoxon
[14:18] <jcoxon> hey edmoore
[14:20] <edmoore> just been soldering up badger board with fergus
[14:20] <jcoxon> amazing
[14:20] <jcoxon> going well?
[14:21] <edmoore> soldering the telit connectors was a bunch of fun
[14:21] <jcoxon> yeah
[14:21] <jcoxon> manage to get it right?
[14:21] <edmoore> yeah, stopping for lunch and his lab
[14:21] <edmoore> yep, it was fine
[14:21] <jcoxon> cool cool
[14:21] <edmoore> just needed to put very small amounts of solder on a very fine tip
[14:21] <jcoxon> magnify glass?
[14:22] <edmoore> squinting :)
[14:22] <jcoxon> same thing
[14:22] <jcoxon> home now
[14:22] <edmoore> awesome
[14:22] <jcoxon> did my presentation this morning (hence the library work)
[14:22] <edmoore> feel btter?
[14:22] <jcoxon> all good
[14:22] <jcoxon> i'm less manic
[14:23] <edmoore> cool
[14:23] <edmoore> smoked salmon a filly is such a good lunch
[14:23] <jcoxon> thought the mania was good!
[14:24] <edmoore> a bit of mania every now and then is good
[14:24] <edmoore> it's wierd that fergus and i keep baby-talking to our electronics
[14:24] <jcoxon> oh dear
[14:24] <edmoore> 'who's a gooood connector? who's a good connector? yooooou, yooou're a good connector, yes you are, yeessss you aaare'
[14:25] <jcoxon> i could section you for that
[14:25] <edmoore> but then we couldn't balloon
[14:26] <jcoxon> oh it could be a day out
[14:26] <jcoxon> haha
[14:27] <edmoore> hilarious.
[14:27] <edmoore> but yes, so we'll get it blinking an LED under OS by this evening, hopefully
[14:28] <edmoore> and hopefully it'd be atlasable
[14:28] <jcoxon> hehe, think about the ridicolous complexity that it takes to blink an LED
[14:28] <edmoore> well it is a slightly overkill method if that's all you wanted to do, but yes :)
[14:29] <jcoxon> tis all exciting
[14:29] <jcoxon> would be good to make some progress with atlas
[14:29] <edmoore> yeah
[14:30] <edmoore> well we want to fly badger asap
[14:30] <edmoore> will send it up on a latex
[14:30] <edmoore> then our zp
[14:30] <jcoxon> yeah test run first would be good
[14:30] <edmoore> i mean we'll drive about first to check polygon algorithms and stuff
[14:30] <jcoxon> i've been checking my polygon by running Peg III logs through it
[14:34] <jcoxon> i'm really excited about my usb storage plan
[14:34] <jcoxon> its a little simple but quite helpful
[14:34] <jcoxon> might get the gumstix to make the kml straight off
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[15:43] <Laurenceb> hi folks
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[15:56] <edmoore> hi jcoxon
[15:56] <Laurenceb> hi edmoore
[15:56] <edmoore> hi lurence
[15:56] <edmoore> laurence*
[15:56] <edmoore> how's it going?
[15:56] <Laurenceb> not so bad....
[15:57] <Laurenceb> reading "new focus" application notes
[15:57] <Laurenceb> makes more sense than my lecture notes :P
[15:57] <edmoore> optics?
[15:57] <Laurenceb> yes, they make telecoms kit
[15:59] <Laurenceb> its amazing what you can do with just photons
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[16:00] <Laurenceb> just doped fibre amplifiers and such
[16:01] <edmoore> fergus and I are half way through soldering up the badger board, laurenceb
[16:01] <Laurenceb> nice
[16:01] <Laurenceb> photos photos
[16:01] <Laurenceb> how is the soldering going? trying the drag technique?
[16:02] <edmoore> nope, just old fashioned steady hand and fine tip
[16:02] <edmoore> it's all downhill now that we;ve soldered the telit connector
[16:02] <Laurenceb> I see
[16:02] <Laurenceb> wow
[16:02] <Laurenceb> what pitch is that?
[16:03] <edmoore> 0.fucking_nothing mm
[16:03] <Laurenceb> I'm guessing you had to use wick or something?
[16:03] <edmoore> nah it's not too bad, 0.5mm
[16:03] <edmoore> only one need to wick up a bridge!
[16:04] <edmoore> fergus's desk is right by the window, so it was very light
[16:04] <edmoore> which helped
[16:04] <Laurenceb> ah ok, I've soldered 0.5mm before...
[16:04] <Laurenceb> but I was using a scope and very powerful light
[16:04] <edmoore> i was using squinting and a very powerful sun
[16:04] <Laurenceb> lol
[16:05] <Laurenceb> well good luck, put some photos on the wiki when your done
[16:05] <Laurenceb> I really have to revise :-(
[16:06] <Laurenceb> bbl
[16:06] <edmoore> cya
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[16:26] <jcoxon> hey edmoore
[16:27] <edmoore> yo
[16:27] <edmoore> so I've decided to kill myself
[16:27] <jcoxon> oh
[16:27] <jcoxon> thats not a great idea
[16:27] <edmoore> because
[16:28] <edmoore> think of anything you could do
[16:28] <edmoore> there will be someone half your age who can do it better
[16:28] <jcoxon> who and what can they do?
[16:28] <jcoxon> as in whats the trigger
[16:29] <jcoxon> in this depressive thinking
[16:29] <edmoore> i'm doing one of those things where i search for the piano piece and trying to learn and there's some fetus who can play it three times ebtter
[16:29] <edmoore> http://www.youtube.com/watch?v=X4td_Zn6G3U
[16:29] <jcoxon> oh, don't worry
[16:29] <jcoxon> i met an 9 year old who can play better then me
[16:29] <jcoxon> i'm pretty rubbish
[16:30] <jcoxon> http://www.flickr.com/photos/jcoxon77/2496505519/in/set-72157604705012806/
[16:30] <edmoore> we look so cool
[16:30] <edmoore> ...
[16:30] <jcoxon> bet he can't do that
[16:31] <jcoxon> though he can play the piano
[16:31] <edmoore> well he could probably do a more nimble job of untangling those strings
[16:31] <edmoore> which is what I'm doing in that photo
[16:32] <jcoxon> yeah he is a ferak
[16:32] <jcoxon> freak*
[16:33] <edmoore> it upsets me that he makes it look so easy
[16:33] <edmoore> maybe i'm just getting arthritis
[16:33] <edmoore> but my fingers won't do that
[16:33] <jcoxon> she is cooler: http://www.youtube.com/watch?v=KPBl9RuU1u0&feature=related
[16:35] <edmoore> she is the coolest : http://www.youtube.com/watch?v=saqskTrAQ3Q&feature=related
[16:36] <jcoxon> and she can use her third arm to hold her lollypop
[16:36] <edmoore> it's quite a gift
[16:38] <jcoxon> oh well
[16:38] <jcoxon> i played the violin yesterday for the first time in ages
[16:38] <jcoxon> it was awful and embrassing
[16:39] <edmoore> hahaha
[16:39] <jcoxon> but it made people laugh - so i guess its okay
[16:39] <edmoore> i guess it's not the kind of thing tht sounds good when out of practice
[16:39] <jcoxon> i don't think i'll play it again for a while
[16:40] <jcoxon> though i do want to find a piano in the hospital so i can practice
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[16:41] <edmoore> that would be awesome
[16:42] <edmoore> I decided the other day that if I ever 'make it', however you define that, I'll know because I'll have a grand piano in the place where I work
[16:44] <jcoxon> :-) , i love grands
[16:44] <jcoxon> my parents have two :-p
[16:45] <edmoore> unfair
[16:45] <edmoore> one day...
[16:48] <jcoxon> indeed
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[16:55] Action: jcoxon is soldering up his telit
[16:56] <edmoore> it's the fashionable thing to do, don't you know
[16:56] <jcoxon> mine is on a slightly different scale
[16:56] <edmoore> hrm... who's the most hassle free n-annoying sim provider?
[16:57] <jcoxon> i use vodafone
[16:57] <edmoore> ok sounds good
[16:58] <Laurenceb> me too
[16:59] <jcoxon> they also allow 3rd party cell tracking
[16:59] <jcoxon> unlike O2
[16:59] <Cooleo64> I use 3 Mobile. There sexy :)
[17:00] <edmoore> to track balloon payloads?
[17:01] <edmoore> I don't really need sexiness, I need signal strength
[17:01] <Laurenceb> I once did a test with my phone
[17:02] <Laurenceb> from cambridge to london to derby
[17:02] <Laurenceb> monitored the signal strenght every minute
[17:02] <Cooleo64> If you need signal strength, Use Virgin Mobile
[17:02] <Laurenceb> vodaphone was top, followed closely by orange and 02
[17:02] <Cooleo64> 99.8% Coverage
[17:02] <Laurenceb> vigin was way down
[17:02] <Cooleo64> Weird
[17:03] <Cooleo64> I've never not had a signal with them :S
[17:03] <edmoore> where abouts do you live, Cooleo64 ?
[17:03] <Cooleo64> Lowestoft, Suffolk. But I've been up and down the UK, and around the world with them
[17:04] <edmoore> suffolk seems to be the place to be for ballooning
[17:04] <Cooleo64> Touched down in Dallas Texas, Got an instant signal XD
[17:04] <jcoxon> edmoore, lots of space
[17:04] <Cooleo64> Suffolks good for ballooning, Unless you live near me
[17:04] <Laurenceb> I seriously doubt virgin has the best coverage
[17:04] <jcoxon> big skies
[17:04] <Cooleo64> 4 Miles away from the sea :(
[17:04] <Laurenceb> this was about a year ago
[17:04] <Laurenceb> when I did the test
[17:05] <edmoore> well at least if you launch, you'll probably come a bit west over to us
[17:05] <edmoore> and then the chase is just the journey home
[17:05] <Cooleo64> Yeah.
[17:05] <Cooleo64> But if it does go out into the north sea..
[17:05] <Laurenceb> also vodaphone has coverage over the wash
[17:05] <Laurenceb> how do I know that....
[17:05] <edmoore> :p
[17:05] <Cooleo64> lol
[17:06] <edmoore> amazing that you hit a sand bank though
[17:06] <jcoxon> vodafone also works underwater
[17:06] <Laurenceb> haha
[17:06] <jcoxon> PegV sent data at -5m
[17:06] <edmoore> at least we could watch the sun set on your payload
[17:06] <Cooleo64> Haha!
[17:06] <Cooleo64> Be right back, Gotta grab some trousers, Prom tonight. Pfft
[17:07] <edmoore> that's an awesome senmtence
[17:07] <Laurenceb> Prom ?!
[17:07] <Cooleo64> Yeah
[17:07] <Laurenceb> where do you think we are the us of a ?
[17:07] <Cooleo64> Haha :P
[17:07] <Laurenceb> that word is not allowed in this country
[17:08] <Cooleo64> Theres not much else you can call it, Its about a disco but below a formal ball
[17:08] <edmoore> actually we walked along the prom in hunstanton, laurence
[17:08] <Laurenceb> haha
[17:08] <edmoore> trying to find a man with an amphibious vehicle
[17:08] <Laurenceb> disco ftw
[17:08] <Cooleo64> Stupid Ignorant Chav's Complaining at School though, They hired a Jazz Band.
[17:08] <Cooleo64> I personally dont mind live Jazz.
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[17:08] <Laurenceb> :P
[17:09] <Cooleo64> Meh, They all have to go out and smoke, and once they've left they cant come back in >:D
[17:09] <edmoore> perfect
[17:09] <Cooleo64> Anyhow, trouser time.
[17:10] <Laurenceb> revision time :(
[17:10] <Laurenceb> bbl
[17:10] <jcoxon> doing nothing time
[17:11] <Cooleo64> back time
[17:12] <edmoore> jcoxon: I'm with you
[17:12] <edmoore> waiting for fergus to finish his lab
[17:12] <edmoore> so we can carry on geeking
[17:12] <jcoxon> haha
[17:12] <jcoxon> i'm taking the weekend off
[17:12] <edmoore> bought the wrong accelerometers from digikey though, annoyingly
[17:12] <jcoxon> worked my arse off last week
[17:12] <jcoxon> edmoore, urrghhh
[17:12] <jcoxon> stupid digikey
[17:12] <edmoore> not their fault!
[17:13] <jcoxon> stupid edmoore fnoble
[17:13] <edmoore> we're going for a high speed cutdown after burst feature
[17:13] <jcoxon> oooo interesting approach
[17:13] <edmoore> so basically it just detects freefall (or there abouts) and cuts away
[17:13] <jcoxon> don't drop the payload
[17:13] <jcoxon> haha
[17:13] <edmoore> hopefully within half a second of burst
[17:14] <edmoore> eoss have a mechanical version of the same thing
[17:14] <edmoore> but i wanted something a bit lighter
[17:14] <edmoore> and to be honest for a nromal flight an arm is just twiddling its thumbs 99% of the time
[17:15] <edmoore> not sure how well it'll work yet
[17:15] <jcoxon> :-p
[17:15] <jcoxon> one step at a time
[17:15] <edmoore> exactly
[17:15] <jcoxon> reminds me why i'm lazy and get off the shelf products
[17:16] <jcoxon> off to any mayballs this summer?
[17:16] <edmoore> it'll just be loggining initially and if the magnitude of the acceleration vecotr is low enough for long engough 9and distinguishable from turbulence and stuff) then we'll give it a shot
[17:16] <jcoxon> sounds like a plan
[17:19] <Laurenceb> looking at some of our videos I think it'll work
[17:19] <jcoxon> Laurenceb, DO SOME WORK
[17:19] <Laurenceb> haha
[17:19] Action: Laurenceb punches himself
[17:19] <edmoore> yeah i hope so - it's be a nice feature to have if it can be implimented without too much hassle
[17:20] Action: jcoxon is allowed to say this as his exams aren't till august
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[18:56] <Hiena> Good evening!
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[20:38] <edmoore> RocketBoy: babdgerboard is flashing LEDs under TNKernal!!
[20:39] <edmoore> yey!
[20:39] <edmoore> we've had a fun soldering afternoon
[20:39] <edmoore> and then we downloaded the code and it worked first time!
[20:39] <edmoore> that's never happened to me before
[20:40] <RocketBoy> it doesn't happen often!
[20:40] <edmoore> I like ARMs
[20:41] <RocketBoy> yeah
[20:41] <edmoore> We have a list the length of my arm for version 2 changes, but still, so far so good!
[20:42] <Laurenceb> nice
[20:42] <RocketBoy> sounds fun
[20:42] <Laurenceb> what compiler are youy using?
[20:42] <edmoore> GCC
[20:43] <Laurenceb> ok
[20:43] <Laurenceb> with rowley crossworks?
[20:43] <edmoore> yup
[20:43] <Laurenceb> ok
[20:43] <Laurenceb> where did you pick up TNKernel?
[20:44] <edmoore> the tnkernel website
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[20:44] <edmoore> tis free
[20:47] <edmoore> got the wrong footprint for the 3 axis accelerometer
[20:47] <edmoore> gaaaah
[20:47] <edmoore> qfn28 != qfpn28
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[20:48] <Laurenceb> sorry my machine died
[20:48] <edmoore> np
[20:48] <Laurenceb> sounds very intersting
[20:48] <Laurenceb> I'll have to give it a go
[20:48] <edmoore> it's nice
[20:49] <edmoore> what do you want to run it on?
[20:49] <Laurenceb> is NTKernel opensource?
[20:49] <edmoore> yep
[20:49] <Laurenceb> I want to make an IMU... at some point
[20:49] <Laurenceb> cool
[20:49] <edmoore> we've modded it a fair bit, but it's very very light so it's not really a big scary thing
[20:49] <Laurenceb> yes, they dont look too bad
[20:50] <edmoore> I would have thought an IMU is very much not something that needs an RTOS
[20:50] <Laurenceb> well yes
[20:50] <Laurenceb> more a case of I need to familiarise myself with ARM
[20:50] <Laurenceb> so I can build an IMU :P
[20:50] <edmoore> lol
[20:51] <edmoore> well a dsp is actually the most ideal
[20:51] <Laurenceb> I was looking at some of the benchmarks
[20:51] <Laurenceb> ARM is more than enough for an IMU, an AVR would almost do it....
[20:52] <Laurenceb> about 20Hz on an AVR, 100Hz plus on ARM
[20:52] <Laurenceb> for a 6 state kalman filter
[20:52] <edmoore> your one maybe "p
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[20:52] <Laurenceb> right I need to catch sainsburys
[20:52] <Laurenceb> bbl
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[00:00] --- Sat May 17 2008