highaltitude.log.20090307

[00:05] <jcoxon> done
[00:05] <jcoxon> night
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[00:57] <shellevil> Laurenceb: isn't there a 'help forum' or something on the AD site?
[00:57] <Laurenceb> hmm yeah I'll take a look
[00:57] <Laurenceb> really need to scope to look at this
[01:06] <hallam> Laurenceb: usually they're pretty helpful if you phone and ask to talk to an engineer
[01:06] <Laurenceb> neat
[01:07] <Laurenceb> http://www.skyscrapercity.com/ <-- interesting forum
[01:48] <hallam> edmoore: Try again at http://www.cuspaceflight.co.uk/expenses , you should be able to log in now
[01:48] <edmoore> it logs in, don't see how i can enter stuff though
[01:48] <hallam> yeah I've just been doing the user management
[01:49] <edmoore> cool, well it seems to work fine in that regard
[01:49] <hallam> ok
[01:49] <edmoore> maybe an option to attach a scan/photo of receipts too?
[01:49] <hallam> in there
[01:49] <edmoore> that would help a lot
[01:49] <edmoore> oh grand
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[02:50] <natrium42> Laurenceb, going to stay for the kepler launch?
[03:12] <SpeedEvil> anyone have any nice AA/AAA battery charger?
[03:14] <SpeedEvil> http://www.mahaenergy.com/store/viewItem.asp?idProduct=423 contemplating
[03:28] <SpeedEvil> http://cpc.farnell.com/jsp/bespoke/bespoke2.jsp?bespokepage=cpc/en_CC/special_offers/bargains/bargain_components6.jsp has some interesting reduced stuff
[03:36] <natrium42> http://www.nasa.gov/55644main_NASATV_Windows.asx
[03:36] <natrium42> :P
[03:39] Action: shellevil stares at the rocket, watching for anything small moving in front of it.
[03:50] <shellevil> getting there
[03:52] <shellevil> I love the mach diamondsd
[03:54] <natrium42> :)
[03:56] <shellevil> I do wish they'd make the screens properly accessible
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[08:33] <natrium42> yo jcoxon
[08:34] <jcoxon> hey natrium42
[08:35] <jcoxon> hows it going?
[08:35] <natrium42> just ran a test writing to 8GB microSDHC
[08:35] <natrium42> and it works, zomg
[08:35] <jcoxon> wow
[08:35] <jcoxon> fat never works!
[08:35] <natrium42> tiny-fatfs is very nice
[08:36] <natrium42> http://elm-chan.org/fsw/ff/00index_e.html
[08:36] <natrium42> it was basically plug and play
[08:37] <natrium42> microsd is going to be used only for logging on the first mission, since we don't have a camera
[08:37] <jcoxon> yeah that sounds sensible
[08:37] <natrium42> although i could technically use eeprom
[08:38] <jcoxon> i've ordered some silicone tubing for the valves
[08:39] <jcoxon> i'm a bit worried how ridicilously small they are
[08:39] <natrium42> hmm, you think flow rate will be too small?
[08:39] <jcoxon> perhaps
[08:40] <natrium42> guess the tests will show
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[08:40] <natrium42> do they have bigger valves?
[08:40] <jcoxon> yeah they do
[08:41] <jcoxon> i'm just riggign something up now with some heat shrink as it fits the ports
[08:41] <natrium42> cool
[08:41] <natrium42> btw, kepler launched successfully :P
[08:42] <jcoxon> yeah i saw - very cool
[08:42] <natrium42> :)
[08:55] <jcoxon> hmmm heatshrink kinks alot :-(
[09:15] Action: natrium42 ZZzz
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[09:36] <fergusnoble_> edmoore: are you coming down for the build day?
[09:36] <edmoore> if peeps don't mind being buggy :)
[09:37] <jcoxon> morning edmoore and fergusnoble_
[09:37] <edmoore> i won't be there for 10 though - brunch!
[09:37] <fergusnoble_> morning jcoxon
[09:37] <fergusnoble_> edmoore: hehe, wish queens brunch was something to be late for
[09:38] <edmoore> churchill certainly is - it has a proud history of delaying/dictating launches
[09:38] <edmoore> are you going down?
[09:38] <fergusnoble_> yeah, again will be a bit late
[09:39] <fergusnoble_> but due to waking up late
[09:39] <edmoore> it's allowed
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[10:22] <shellevil> has kepler opened?
[10:26] <jcoxon> morning shellevil
[10:26] <shellevil> morn
[10:26] <jcoxon> i'm a little concerned that the valves are too small
[10:29] <shellevil> Well - get a cup of water and some tubing, and see if they flow OK
[10:29] <shellevil> the tests I did with a comparable orifice - according to the datasheet - seemed OK
[10:31] <jcoxon> yeah i've ordered some tubing the internal diameter is smaller then anything i can get off the shelf
[10:32] <shellevil> what's the ID?
[10:32] <jcoxon> 1.6mm
[10:32] <shellevil> For testing, get some 13A flexy mains cable
[10:33] <shellevil> strip 20cm or so of the outer covering
[10:33] <shellevil> now, cut the insulation, and pull off wires
[10:33] <shellevil> that should be about that
[10:35] <jcoxon> bbl
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[10:39] <shellevil> nasa-tv
[10:39] <shellevil> video of ares parachute test
[10:42] <shellevil> interersting.
[10:42] <shellevil> shows the staged opening of chutes
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[16:28] <shellevil> 80MP camer. http://kepler.nasa.gov/sci/design/spacecraft.html fun
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[16:29] <shellevil> http://kepler.nasa.gov/about/news.html
[16:29] <shellevil> they could update this stuff...
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[18:55] <gerard_> hello?
[18:57] <gerard_> Meteotek08 was launched on 28/02/09, and was a success :) we have photos at http://www.flickr.com/photos/meteotek08
[18:57] <natrium42> whoa
[18:57] <natrium42> nice
[18:57] <gerard_> how could we add a new on the website?
[18:58] <natrium42> here? http://wiki.ukhas.org.uk/
[18:58] <gerard_> on the main page of ukhas.org.uk, where you put launches
[18:59] <natrium42> oh, add it to the wiki first
[18:59] <natrium42> and we can ask jcoxon to add it to front page when he's here
[18:59] <gerard_> ok
[18:59] <natrium42> where did it land?
[19:00] <gerard_> 38km from origin, coord are: 41 44.69573 N,000 10.59651 E
[19:00] <gerard_> I'll make the KML tonight
[19:00] <natrium42> yay
[19:00] <natrium42> great pics btw
[19:01] <gerard_> which is the wiki page for launches? (that have been done)
[19:02] <natrium42> http://wiki.ukhas.org.uk/list_of_launches
[19:02] <gerard_> thanks
[19:03] <natrium42> np
[19:03] <gerard_> max alt registered was 30677m
[19:03] <natrium42> oh, excellent
[19:03] <natrium42> did payload survive?
[19:03] <gerard_> yes, only is affected
[19:04] <gerard_> other things are ready to fly again :)
[19:04] <gerard_> servo
[19:04] <natrium42> :)
[19:04] <natrium42> great job
[19:05] <natrium42> when's the next flight? :)
[19:07] <natrium42> whoa, sweet setup http://www.flickr.com/photos/meteotek08/3330672219/sizes/l/
[19:07] <gerard_> don't know when, because we are in the university 1B again, so maybe on summer and adding a videocamera
[19:08] <gerard_> :)
[19:08] <gerard_> there are a lot of photos
[19:08] <gerard_> and there's a video to come
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[19:09] <natrium42> what are those photos of two balloons?
[19:09] <Laurenceb> hello
[19:09] <natrium42> hi Laurenceb
[19:09] <Laurenceb> RocketBoy: hi
[19:09] <natrium42> Laurenceb, http://www.flickr.com/photos/meteotek08
[19:10] <natrium42> gerard_'s team launched
[19:10] <Laurenceb> RocketBoy: any chance you could put the mfsk code up?
[19:10] <Laurenceb> I'm planning to get mfsk working on my radio
[19:11] <Laurenceb> natrium42: whereabouts?
[19:11] <natrium42> spain
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[19:12] <natrium42> landing spot --> http://maps.google.ca/maps?f=q&source=s_q&hl=en&geocode=&q=41+44.69573+N,000+10.59651+E&sll=49.891235,-97.15369&sspn=49.638976,57.480469&ie=UTF8&ll=41.74434,0.177262&spn=0.006964,0.007017&t=h&z=17&iwloc=addr
[19:13] <Laurenceb> looks quite nice for ballooning
[19:14] <Laurenceb> http://www.flickr.com/photos/meteotek08/3331199983/sizes/l/
[19:14] <gerard_> the red wire is the cutdown wire
[19:15] <Laurenceb> http://www.flickr.com/photos/meteotek08/3331974520/
[19:15] <gerard_> we forgot to attach it well...
[19:15] <Laurenceb> smart idea with the ant mount
[19:15] <Laurenceb> gerard_: well done ;P
[19:17] <gerard_> we were able able to change its vert and hor orientation
[19:17] <gerard_> it's quite simple to make it
[19:17] <gerard_> I can send more detailed photos ;)
[19:18] <Laurenceb> using a servo?
[19:18] <Laurenceb> http://www.flickr.com/photos/meteotek08/3330672219/ <-- nice setup
[19:19] <gerard_> the servo is used by the camera
[19:19] <gerard_> so we can take photos up and down
[19:19] <natrium42> gerard_, you had a humidity sensor onboard?
[19:20] <natrium42> or is that pressure
[19:20] <Laurenceb> a lot of batteries
[19:21] <gerard_> no, just pressure and temp
[19:21] <gerard_> too much batteries yes :P
[19:21] <gerard_> next time we'll fly with 50% of them
[19:22] <gerard_> we were too worried for power consumption :P was our 1st flight
[19:22] <Laurenceb> aha sparkfun pressure sensor
[19:23] <edmoore> gerard_: !!!!
[19:23] <edmoore> how's it going?
[19:23] <edmoore> long time no see
[19:23] <natrium42> i wonder how that sensor performed, did you make graphs?
[19:23] <gerard_> yes, sparkfun pressure sensor, worked fine and the graphic is very nice
[19:24] <edmoore> we've got one on badger 2
[19:24] <gerard_> yes, I have pressure graphs done, I have to post them
[19:24] <natrium42> my concern about the specs was that the min pressure was too high
[19:24] <gerard_> it looks like an exact exp formula :P not like temp sensor which makes more variations
[19:24] <natrium42> but specs are spec
[19:24] <natrium42> +s
[19:24] <gerard_> edmoore: hi
[19:25] <edmoore> natrium42: agreed on the concern. we'll characterise it
[19:26] <edmoore> gerard_: so give me a quick update on what's happened since we last spoke
[19:26] <edmoore> which was last year
[19:26] <Laurenceb> edmoore: sensortechnics have something that covers a better range
[19:26] <edmoore> link me baby
[19:26] <edmoore> one more time
[19:26] <Laurenceb> but less resolution
[19:26] <gerard_> we'll try to use another temp sensor, since ds18b20 min temp is -55 however we got reports of -57, but may not be correct....
[19:26] <Laurenceb> just a sec
[19:27] <gerard_> edmoore: we launched on 28/02/09 and we recovered it :P
[19:27] <edmoore> fantastic
[19:27] <gerard_> I finally re-programmed many things of the firmware
[19:27] <gerard_> it has a little multithreaded OS right now
[19:28] <gerard_> one question, do you know of any nice temp sensor?
[19:28] <edmoore> lm75?
[19:29] <edmoore> what's the processor?
[19:29] <gerard_> avr
[19:29] <gerard_> atmega128 right now
[19:29] <Laurenceb> edmoore: CSDX1000A2R
[19:29] <Laurenceb> http://www.sensortechnics.com/index.php?fid=300&fpar=YToxOntzOjQ6InBjaWQiO3M6MzoiMTczIjt9&isSSL=0&aps=0&blub=5c4acd01785490150591f3ec91b908bd
[19:31] <natrium42> bah, 5V...
[19:31] <Laurenceb> hmm there is a 3.3v
[19:31] <edmoore> gerard_: nice. we use a real-time OS too on our board
[19:31] <edmoore> it makes a lot of sense for this application
[19:31] <gerard_> I'd like to switch to more powerful procesor in the future, avr are so limited
[19:32] <gerard_> edmoore: yes, you're right
[19:32] <edmoore> we use an LPC2148
[19:32] <edmoore> very easy, I recommend it
[19:32] <edmoore> and very very much more power than the avr, but still pretty easy and integrated
[19:32] <Laurenceb> can you use gcc with it?
[19:32] <edmoore> 512k code space, 32bit, 48kB ram, 60Mhz, lots of peripherals
[19:32] <natrium42> it's arm
[19:33] <edmoore> Laurenceb: yes, and we do
[19:33] <natrium42> what can you *not* use gcc with? :P
[19:33] <Laurenceb> :P
[19:33] <edmoore> dspics
[19:33] <natrium42> fine
[19:33] <gerard_> we use gcc too :)
[19:33] <Laurenceb> hehe
[19:33] <Laurenceb> yes thats why dspics are a apin
[19:34] <edmoore> looked at the cirrus ep9302 too, but way m ore horsepower than we need atm. 200mhz with a floating point unit though - one for a rainy day
[19:34] <Laurenceb> pssst kalman filter
[19:35] <edmoore> exactly
[19:36] <gerard_> talking about floating point, I've had some problems using floating point ops in avr
[19:36] <edmoore> what kind of problems?
[19:36] <gerard_> some problems were detected in avrlibc in the past, but should be solved.
[19:36] <Laurenceb> yeah
[19:37] <Laurenceb> if you upgrade to the latest version its very good
[19:37] <gerard_> Program stopped randomly when we were doing floating point ops
[19:37] <Laurenceb> woops
[19:37] <gerard_> (ex. converting coordinates)
[19:37] <Laurenceb> I found > 2007 is fine
[19:37] <gerard_> deactivating the converter everything worked fine
[19:37] <gerard_> maybe was another problem
[19:37] <Laurenceb> edmoore: found it http://www.sensortechnics.com/download/hdi-650.pdf
[19:38] <Laurenceb> maybe some sort of overflow, did you have a watchdog?
[19:38] <gerard_> yes
[19:38] <edmoore> gerard_: http://www.flickr.com/photos/meteotek08/3301386740/
[19:39] <edmoore> keep them tied down!
[19:39] <Laurenceb> http://www.flickr.com/photos/meteotek08/2638928532/ <-- lol
[19:39] <edmoore> lots of people have had issues with batts popping out on a hard landing
[19:39] <Laurenceb> yeah myself included
[19:39] <gerard_> they were strongly attached when we launched :)
[19:39] <edmoore> cool :)
[19:40] <gerard_> inside temp min temperature registered was -17ºC
[19:40] <gerard_> maybe next time I'll use other batteries
[19:41] <Laurenceb> how much current did the cutdown take?
[19:42] <gerard_> Laurenceb: it was a difficult task to find a way isolate the camera and shape it into a "box" hehe
[19:42] <gerard_> cutdown 1.5A
[19:42] <Laurenceb> interesting
[19:42] <Laurenceb> I've been using resistor cutdowns, and edmoore explosive ones
[19:43] <gerard_> this one is a nicrom wire
[19:43] <edmoore> i like explosives :)
[19:43] <Laurenceb> I like... erm... resistors
[19:43] <Laurenceb> resistophile
[19:44] <edmoore> what is it called if you like files?
[19:44] <Laurenceb> weird
[19:44] <gerard_> have you ever used the cutdown?
[19:45] <edmoore> yes
[19:45] <Laurenceb> yeah ~6 times
[19:45] <gerard_> The problem is the wire... maybe a little radio to make wireless cutdown would be nice, I've seen it on a webpage
[19:48] <Laurenceb> is this a school/university project?
[19:48] <edmoore> Laurenceb: thanks for the pressure sensor link
[19:48] <edmoore> gerard_: jcoxon was working on a wireless cutdown
[19:48] <gerard_> school, they financed us many things
[19:48] <gerard_> ok
[19:49] <gerard_> ah, I've added the project http://wiki.ukhas.org.uk/list_of_launches
[19:49] <natrium42> wireless cutdown: point laser at balloon
[19:49] <edmoore> i've always wanted to try that
[19:49] <gerard_> natrium42: hehe nice idea
[19:49] <natrium42> :)
[19:50] <Laurenceb> I want a laser projetor
[19:50] <gerard_> is jcoxon the person who updates the news page,right?
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[19:50] <edmoore> yep
[19:53] <gerard_> well, I have to leave now, I'll try to be here tomorrow, and post graphs/kml ;)
[19:53] <gerard_> have a nice day! a d thanks mfor ur ideas
[19:56] <natrium42> later, gerard_
[20:28] <Laurenceb> RocketBoy: ping
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[21:24] <RocketBoy> laurenceb:pong
[21:24] <Laurenceb> hello
[21:24] <Laurenceb> any chance you could put your mfsk code up?
[21:24] <Laurenceb> I'm going to try and get it running on my radio
[21:24] <jcoxon> evening all
[21:26] <RocketBoy> I can send it to you - but I don't want to put it on a public wiki yet - its not tested enough yet
[21:26] <jcoxon> hey RocketBoy
[21:26] <Laurenceb> np
[21:26] <jcoxon> any sign of that radio kit yet?
[21:26] <Laurenceb> pastebin it
[21:27] <RocketBoy> I'll email it
[21:28] <RocketBoy> jcoxon: no sign of the board yet
[21:28] <jcoxon> which one did you order in the end?
[21:28] <RocketBoy> the rockmite
[21:29] <jcoxon> okay cool
[21:29] <jcoxon> i got the solenoid valves
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[21:31] <jcoxon> RocketBoy, any idea when? weeks? months?
[21:32] <RocketBoy> well I would have thought it would have arrived by now - must have ordered it 3 or so weeks ago
[21:33] <RocketBoy> I got a confirmation email to say it had shippped
[21:33] <jcoxon> oh okay cool
[21:33] <jcoxon> just keeping an eye on everyones progress :-D
[21:35] <RocketBoy> getting the kit made is the easy part
[21:35] <RocketBoy> I'm programming a PIC at the mo
[21:35] <jcoxon> great
[21:36] Action: jcoxon checks the job list
[21:36] <jcoxon> looking all good
[21:37] <Laurenceb> RocketBoy: l<dot>blaxter<at>surrey.ac.uk
[21:37] <RocketBoy> The PIC will have to be on a seperate board.
[21:37] <jcoxon> thats no problem
[21:37] <jcoxon> we've got space
[21:38] <jcoxon> will it be on 40m?
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[21:48] <RocketBoy> laurenceb: sent
[21:50] <Laurenceb> ta
[21:50] <RocketBoy> jcoxon: yes 40M
[21:51] <jcoxon> cool
[21:52] <RocketBoy> Im still thinking of a dipole - anyone got any other ideas
[21:53] <jcoxon> edmoore suggested a end fired dipole
[21:53] <jcoxon> an*
[21:55] <RocketBoy> ? an end fired 1/2 wave?
[21:55] <jcoxon> ummm i think thats what he said
[21:55] <jcoxon> spoke to mark about cutdowns and such - he suggested not to thave one and have a gentle descent
[21:56] <jcoxon> so dipole isn't a problem
[21:56] <Laurenceb> hmm
[21:56] <Laurenceb> may be hard to arrange
[21:56] <Laurenceb> I'd go for a cutdown
[21:56] <jcoxon> why would it be hard to arrange?
[22:04] <RocketBoy> I think the issue is that the payload will be 10m below the balloon (to allow for 1/2 the diople)
[22:04] <Laurenceb> e.g you ar efling over uk at 200mph
[22:05] <Laurenceb> you dont have long to touchdown
[22:05] <jcoxon> but as it descends it'll slow
[22:05] <jcoxon> and i'm not too happy with a rogue balloon - the payload will provide teh weight for it to drift down slowly
[22:05] <Laurenceb> which case you'll have to start over the atlantic
[22:06] <jcoxon> fair enough it might not land on land but we'll get it back some how :-)
[22:06] <Laurenceb> sure, but you can rip the balloon
[22:06] <Laurenceb> with a rip line
[22:06] <jcoxon> but they don't have rip lines at the moment
[22:06] <Laurenceb> not too hard to make
[22:06] <jcoxon> i don't think we should touch the balloons
[22:07] <Laurenceb> hmmm
[22:07] <Laurenceb> I know... inflate with hydrogen
[22:08] <natrium42> LAZER!
[22:08] <jcoxon> hehe
[22:08] <jcoxon> bbiab
[22:09] <natrium42> http://www.youtube.com/watch?v=iukFVUiN_rU
[22:09] <Laurenceb> RocketBoy: nice code
[22:09] <Laurenceb> but... you are using text strings for the llokup
[22:11] <Laurenceb> Table[ 149]="101101010000"; // ⬢
[22:11] <RocketBoy> ah that bit is just ripped from the MFSK site
[22:12] <RocketBoy> you will see I used it to generate the tables higher up
[22:12] <RocketBoy> there are 3 parts to the code
[22:12] <RocketBoy> the top bit is the code I wrote
[22:12] <RocketBoy> it does the MFSK encoder
[22:13] <Laurenceb> oh sorry
[22:13] <Laurenceb> yeah my stupid mistake
[22:13] <Laurenceb> cool that looks neat
[22:13] <RocketBoy> its actually quite compact - but all the comments make it seem big
[22:13] <Laurenceb> yeah
[22:14] <Laurenceb> using top nibble for the lenght is the way to go
[22:14] <Laurenceb> should compact very well
[22:14] <RocketBoy> the code at the botton is the bit to generate the wav file
[22:21] <Laurenceb> whats the point of the enable TX function
[22:23] <RocketBoy> thats inteneded to power up the transmitter
[22:23] <RocketBoy> or power it down
[22:27] <Laurenceb> hmm interesting
[22:27] <Laurenceb> yeah I wasnt planning on doing that
[22:27] <Laurenceb> as with dominoex you really need to leave it on all the time
[22:28] <Laurenceb> but yeah I'll add it as a feature
[22:30] <RocketBoy> well its only really inteneded to be used to turn the tx on when a message to be sent is recived fron the main processor
[22:30] <RocketBoy> and then turn it off when no more is ready
[22:31] <RocketBoy> I'm expecting that we will send data infrequently - say once every few minutes
[22:31] <RocketBoy> so its only there to power doen between messages
[22:33] <Laurenceb> yeah
[22:34] <Laurenceb> my application hs buffered serial with flow control
[22:34] <Laurenceb> so it should send all the time
[22:34] <Laurenceb> if you hybernate the processor its very power efficient
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[22:43] <hallam> hey all
[22:43] <hallam> edmoore: did you get anywhere with Badger 2
[22:43] <hallam> ?
[22:47] <Laurenceb> hi hallam
[22:47] <Laurenceb> he got arrested for badger baiting
[22:47] <natrium42> lol
[22:48] <hallam> it's a hazard
[22:48] <hallam> natrium42: how's the transatlantic coming?
[22:48] <natrium42> good, started working on flight computer program yesterday
[22:48] <natrium42> microsd works
[22:49] <natrium42> about to connect SPOT to it
[22:49] <hallam> nice
[22:49] <hallam> I saw your link to the FatFS thing, very cool
[22:49] <natrium42> jcoxon got the valves
[22:49] <hallam> was wondering where you got the low-level sector read/write functions?
[22:50] <natrium42> he gives an avr sample at his page
[22:50] <Laurenceb> yeah
[22:50] <natrium42> it's basically plug and play
[22:50] <Laurenceb> I got those working on atmega168
[22:50] <hallam> okay
[22:50] <Laurenceb> he claims it can be built on atlega168 but I couldnt maange it :(
[22:50] <hallam> I'll have a go at porting to dsPIC
[22:51] <natrium42> there's a PIC sample too
[22:51] <natrium42> and LPC
[22:51] <Laurenceb> if you like that sort of thing
[22:51] <Laurenceb> - porting
[22:51] <hallam> yeah it's weird, I had working PIC18 code that I'd written some years ago, but was totally unable to get it to work on my dsPIC
[22:51] <Laurenceb> registers?
[22:51] <hallam> C code
[22:52] <hallam> i'll have a go at that tonight or tomorrow
[22:52] <hallam> it's essential for the star tracker test
[22:52] <natrium42> are you launching next weekend?
[22:52] <Laurenceb> what does it do?
[22:53] <hallam> I want to have it ready next weekend, wx doesn't look flyable at the moment
[22:53] <hallam> Laurenceb: tracks stars
[22:53] <Laurenceb> the pic18
[22:53] <hallam> er that was one of the old nova trackers
[22:53] <hallam> I'm using dsPIC33 on the star tracker board
[22:53] <Laurenceb> i see
[22:54] <hallam> it has to take image data from the blackfin and write it to card
[22:54] <hallam> also does the inertial stuff, radio, cutdowns, gps
[22:54] <Laurenceb> nice
[22:54] <Laurenceb> you filtering with gyros?
[22:55] <hallam> for this flight I'll just be recording the gyro data, synced up to the exposures
[22:55] <Laurenceb> neat
[22:56] <Laurenceb> guess you can remove motion blur
[22:56] <hallam> that's the idea
[22:56] <Laurenceb> do you have a temp sensor on the board?
[22:57] <hallam> yes
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[22:57] <Laurenceb> nice
[22:57] <hallam> actually planning to control the temp with a heater
[22:57] <Laurenceb> might be able to temperature compensate as well
[22:57] <Laurenceb> hmm interesting approach
[22:57] <Laurenceb> resistors?
[22:58] <hallam> yeah a couple of watts
[22:58] <Laurenceb> hmm
[22:58] <Laurenceb> I wonder if thats more sensible than complex temperature compensation
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[22:59] <Laurenceb> it would only take a few hundered mw to heat an insulated mems imu
[23:00] <Laurenceb> probably <100mw for a sparkfun 5DOF IMU
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[23:26] <jcoxon> hey natrium42
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[23:27] <fergusnoble> hallam: ive set you as an admin on the wiki
[23:27] <gerard_> hi, is jcoxon there?
[23:27] <fergusnoble> edmoore: you there?
[23:28] <jcoxon> hey gerard_
[23:28] <jcoxon> yup i'm here
[23:28] <gerard_> hey
[23:28] <hallam> thanks fergusnoble
[23:28] <gerard_> I just wanted to tell you that we launched meteotek08, and if you want you could add it to the news page
[23:29] <jcoxon> oh amazing
[23:29] <jcoxon> do you have any stats
[23:29] <hallam> congrats
[23:29] <hallam> nice tracking van!
[23:30] <jcoxon> how about date,time,altitude,flight length and also a link to pics and such
[23:30] <gerard_> I'm preparing the kml and graphs, tomorrow will be ready. Photos are uploaded at http://www.flickr.com/photos/meteotek08
[23:32] <gerard_> hmm a summary of our launch: 28/02/09, started at 9:10:20 AM (GMT+1) and took 2h 10min to end, max altitude recorded was 30677m
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[23:32] <jcoxon> great
[23:32] <jcoxon> adding it to the site now
[23:33] <gerard_> and recovered :)
[23:33] <gerard_> I've also added an entry here: http://wiki.ukhas.org.uk/list_of_launches
[23:33] <gerard_> the last one
[23:34] <jcoxon> oh coo
[23:34] <jcoxon> right i've added it to the list of launches
[23:36] <fergusnoble> gerard_: very nice, beautiful payload construction
[23:36] <gerard_> thanks fergusnoble, however we'll try to improve weight and batteries next time
[23:38] <fergusnoble> i like the dry ice testing chamber
[23:38] <gerard_> ah, and confirmed that trimble copernicus, using AIR mode does not freeze at 60kft
[23:38] <hallam> that's good to know
[23:39] <jcoxon> gerard_, ooo please add that to the wiki
[23:39] <jcoxon> there is a list of gps' that work
[23:39] <fergusnoble> whats in the grey metal box, radio transmitter?
[23:39] <gerard_> ok, adding now
[23:39] <gerard_> yes
[23:45] <gerard_> added to the wiki
[23:45] <jcoxon> great
[23:45] <gerard_> http://wiki.ukhas.org.uk/guides:gps_modules
[23:47] <edmoore> fergusnoble: am now
[23:49] <fergusnoble> edmoore: hey ho, hows it going?
[23:49] <edmoore> not bad, a bit sleepy but all is well
[23:49] <edmoore> you?
[23:49] <edmoore> good drink?
[23:50] <fergusnoble> had to come back
[23:50] <fergusnoble> beer is not good for a norovirus tummy
[23:51] <edmoore> whoopsy
[23:53] <fergusnoble> how was your mandate?
[23:54] <Laurenceb> norotummy
[23:57] <edmoore> practically passed out
[23:57] <edmoore> after one beer
[23:58] <Laurenceb> lol -> http://news.bbc.co.uk/1/hi/world/europe/7930047.stm
[23:59] <Laurenceb> it would be funny enough anyway
[23:59] <fergusnoble> btw everyone, the landing prediction should now work worldwide and up to 120 hours in the future
[23:59] <fergusnoble> but its buggy as all hell
[23:59] <Laurenceb> sweet
[23:59] <Laurenceb> :P
[23:59] <Laurenceb> you caching data?
[00:00] --- Sun Mar 8 2009