highaltitude.log.20100706

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[01:28] <SpeedEvil> http://news.slashdot.org/story/10/07/05/2159215/Price-Shocks-May-Be-Coming-For-Helium-Supply
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[08:01] <m1x10> morning mates
[08:01] <juxta> hi m1x10
[08:03] <m1x10> juxta you Brit?
[08:03] <juxta> m1x10: no, australian :)
[08:03] <m1x10> oh
[08:03] <m1x10> nice
[08:04] <m1x10> its hot there?
[08:04] <juxta> middle of winter now, a bit cold for my liking :(
[08:05] <m1x10> ah, I though that Australia has only hot seasons
[08:05] <juxta> hehe
[08:05] <juxta> well, I guess it's 10 degrees or so outside
[08:05] <m1x10> oh
[08:06] <juxta> okay - 13 degrees C
[08:06] <m1x10> its cold yes
[08:06] <juxta> yeah
[08:06] <juxta> it's quite cold at the moment though, usually it's not so bad
[08:07] <m1x10> so, what brings you here? u plan to build the Australian spaceship ? :)
[08:07] <juxta> hehe
[08:07] <juxta> I've launch a couple of balloons
[08:07] <juxta> launching another one on Thursday
[08:07] <m1x10> :):):):)
[08:07] <m1x10> Im jealous
[08:07] <m1x10> Do u have any photos or videos to show me?
[08:08] <juxta> sure, you can checkout the blog - www.projecthorus.org
[08:08] <m1x10> Im still preparing my first flight. Im quite noob. I have only my homemade aprs ready.
[08:09] <juxta> I was in your shoes not so long ago m1x10!
[08:11] <m1x10> ah, man Im watching the thorus blog now.
[08:11] <m1x10> Asesome stuff
[08:11] <m1x10> awesome*
[08:11] <m1x10> Its 99% I will buy the ublox thing
[08:12] <m1x10> Do u happen to have it's datasheet? The one on the Falcom page is not working.
[08:12] <juxta> it seems like a good module m1x10
[08:12] <juxta> sure, give me a moment
[08:12] <juxta> m1x10: email address?
[08:12] <m1x10> come prive
[08:13] <m1x10> thx L)
[08:13] <m1x10> :)
[08:15] <m1x10> nice board you have. Im quite noob to electronics so Im using Arduino and its shields.
[08:21] <m1x10> I got your mail. I see that you use VTG for gettting course and speed. Im using RMC.
[08:21] <m1x10> Is there any difference?
[08:31] <juxta> m1x10: I use GGA for the lat, long + alt
[08:31] <juxta> and I used VTG for speed
[08:31] <m1x10> Im using GGA just for alt, and the rest from RMC
[08:32] <m1x10> is that bad you think ?
[08:33] <juxta> no worse or better really :)
[08:33] <juxta> I used GGA + VTG because VTG is a short sentence - VTG + GGA is less data than GGA + RMC
[08:34] <m1x10> hmm, just a few bytes
[08:35] <m1x10> juxta, how can I add my flight in http://spacenear.us/tracker/ ?
[08:37] <juxta> m1x10, you'll need to speak to jcoxon or natrium42 about adding your payload - they'll need to know the telemetry format you use, so that an XML template can be setup
[08:37] <juxta> once that's done, your payload will show up there when data is decoded in dl-fldigi :)
[08:39] <m1x10> ok thanks juxta
[08:40] <m1x10> juxta ! U female !!! ????
[08:40] <m1x10> I watch a video on your blog and showing a blonde girl making pcbs !!!!
[08:40] <juxta> haha - no, that's not me
[08:40] <juxta> that's just a video I found on youtube
[08:41] <m1x10> oh, lol
[08:41] <m1x10> I was surprised !
[08:41] <russss> woah
[08:41] <russss> astrometry solved both of my ISS images
[08:41] <russss> you can hardly see the stars in them
[08:41] <russss> http://www.flickr.com/photos/russss/4765626124/
[08:42] <m1x10> that line is ISS ?
[08:42] <russss> yep
[08:42] <m1x10> how did you managed to get that line?
[08:42] <russss> just a long exposure
[08:42] <m1x10> CHDK ?
[08:43] <russss> it's just 30 seconds
[08:44] <m1x10> ah, too fast that spaceship up there !
[08:44] <russss> yeah it moves at ~2 degrees of arc per second
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[08:46] <jcoxon> ping ju
[08:46] <jcoxon> ping juxta
[08:46] <m1x10> hi jcoxon
[08:47] <juxta> hey jcoxon
[08:47] <m1x10> juxta, I sew the temperature graph, is it correct? The internal temp was about +20C ? Thats because of the insulation?
[08:47] <jcoxon> juxta, i have a small gift for you
[08:47] <juxta> m1x10: yep
[08:47] <jcoxon> hold on
[08:48] <juxta> haha
[08:48] <juxta> I have some code partially ready for you ;p
[08:48] <m1x10> juxta, so that insulator really does work
[08:48] <juxta> yep, sure does m1x10
[08:49] <juxta> I've used thinner foam on this payload for thursday - 25mm instead of 50mm, will be good to see how it goes
[08:49] <juxta> but also have the silver foil around that
[08:49] <juxta> I'll get some photos, 2 secs
[08:50] <m1x10> about the lens that got fogged up
[08:50] <m1x10> how did u fixed that issue?
[08:52] <juxta> i havent yet
[08:53] <m1x10> but I have seen other pictures from other flights, they never get fog
[08:55] <juxta> yeah, not my flights, hehe
[08:56] <juxta> I think the main issue was I sealed the payload
[08:57] <juxta> http://bogaurd.net/payload/
[08:58] <m1x10> the silver thing is the survival blaknet?
[08:59] <juxta> m1x10, no, it's this sort of thing: http://www.premium-partners.com/Upload/Picture_3554_22.jpg
[08:59] <m1x10> haha, i put this on my car dude
[09:00] <m1x10> you think that have caused the fog?
[09:01] <juxta> no no, that's my payload this time
[09:01] <m1x10> a, ok.
[09:01] <m1x10> the temp insulator must be of polystrene?
[09:03] <juxta> yep, polystyrene
[09:03] <m1x10> I might go now to a camping shop to buy such a thing
[09:04] <juxta> from what others have said in the UK you can buy it at the hardware store m1x10
[09:04] <juxta> I buy mine at a rubber wholesaler
[09:04] <m1x10> I already found two shops with survival blankets
[09:05] <juxta> oh right - I meant the foam
[09:06] <m1x10> excuse for my poor english, you called foam that thing: http://www.felizol.gr/images/img08.jpg ?
[09:07] <juxta> m1x10: yes, polystyrene foam
[09:08] <m1x10> can this thing float on the water?
[09:08] <m1x10> cause here half of the country is waterland :)
[09:08] <juxta> yes :)
[09:08] <juxta> where do you live m1x10?
[09:08] <m1x10> nice, maybe I got get one thing like this too
[09:08] <m1x10> greece
[09:09] <juxta> m1x10, I buy it in large sheets and I cut it to size
[09:09] <m1x10> economic crisis :)
[09:09] <juxta> hehe
[09:09] <m1x10> :P
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[09:10] <juxta> are you on the mainland of Greece, or an island?
[09:11] <m1x10> mainland ! but near to sea :) A couple of kilometers and I can go to swim :)
[09:12] <juxta> ah right - I'm the same, I cross one road and I'm in the water, so I drive inland a bit to launch
[09:12] <m1x10> yeah, correct choice.
[09:12] <m1x10> But I want a bit risky
[09:12] <m1x10> I will plan the flight over sea
[09:12] <juxta> do you have a boat? :)
[09:12] <jcoxon> juxta, how far off are you with the code?
[09:13] <m1x10> fortunately my cousin has a 5 meter boat
[09:13] <juxta> jcoxon: will finish it up right now
[09:13] <jcoxon> oh thanks
[09:13] <jcoxon> want to get some testing done
[09:15] <m1x10> juxta, so you dont have to spend any money to go swimming holidays !
[09:15] <m1x10> propably we are the lucky ones :)
[09:15] <juxta> hehe. back shortly.
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[09:46] <juxta> ping jcoxon
[09:49] <jcoxon> hey juxta
[09:49] <juxta> ahoy - I finished off that function
[09:49] <jcoxon> great
[09:50] <juxta> http://pastebin.com/N9kD1Pd2
[09:50] <juxta> returns the mode as an integer
[09:51] <juxta> just ammended the post with human translation
[09:51] <juxta> http://pastebin.com/mKL9azC2
[09:51] <jcoxon> thanks juxta
[09:52] <juxta> no worries - it's not exactly ideal, I'll write up a library to do this better soon
[09:52] <juxta> (that code doesnt verify checksum, so you might want to call it a few times if you're paranoid)
[09:54] <jcoxon> i'm thinking - doing this function on start up
[09:54] <jcoxon> then perhaps if haven't got a lock for a while do it again
[09:55] <juxta> alrighty
[09:55] <juxta> I'm planning on writing a library which will do things like setModel(2), fixType(3) etc
[09:56] <juxta> & do checksum validation on all messages
[09:56] <jcoxon> yeah
[09:56] <jcoxon> thats very sensible
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[09:57] <juxta> I'll write a UBX class, I'll need to experiment with templating so that it can accept either a hardware serial object or a software serial
[09:57] <juxta> as the methods are essentially the same
[09:59] <jcoxon> hehe what do we do if it refuses to shift :-p
[10:00] <juxta> kernel panic! :D
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[10:42] <juxta> hmm, interesting prediction: www.bogaurd.net/broken.jpg
[10:42] <jcoxon> haha
[10:42] <jcoxon> far away...
[10:42] <juxta> not getting a valid prediction, hrm
[10:43] <fsphil> hehe, I had that once -- caused by the prediction running past the end of the GFS data
[10:44] <juxta> okay - the old predictor is working
[10:44] <jcoxon> launch is now on
[10:45] <juxta> just saw the email jcoxon :)
[10:47] <fsphil> excellent
[10:48] <jcoxon> fsphil, if super float occurs might be heading in your direction...
[10:51] <fsphil> If it does I can probably arrange some wheels and go after it
[10:52] <jcoxon> i really like float flights - in some ways the ballast tanks mess all that up
[10:56] <fsphil> you're basically creating a small leak, to make it float?
[10:56] <jcoxon> yes and no
[10:56] <jcoxon> i think its more to do with the temperature change
[10:56] <jcoxon> the little leak just helps
[10:58] <griffonbot> @jamescoxon: #bh5 launch 09/07/10 Chu, Camb at 18:00UTC, more info: http://bit.ly/aRtaAV , tracking on the day very welcome #ukhas #arhab [http://twitter.com/jamescoxon/status/17857073174]
[11:01] <fsphil> I suppose the ideal system would be to compress some of the helium, and release it as needed
[11:01] <fsphil> back into the balloon
[11:01] <jcoxon> yeah but incedibly hard
[11:01] <jcoxon> these ballast tanks on a ZP would do the job
[11:03] <jcoxon> bbl
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[11:56] <fsphil> any avr gurus here?
[12:11] <jnd> there are more gurus in #avr
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[12:13] <fsphil> oh yea, irc, d'oh!
[12:13] <fsphil> thanks jnd
[12:38] <m1x10> the polysterene foam is what we call felizol ?
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[13:43] <rharrison> junderwood, was there any news on the paylaod?
[13:43] <junderwood> Nope
[13:43] <junderwood> It's a gonner
[13:44] <rharrison> Bolox
[13:45] <rharrison> I'm sorry for you it looked a cool payload.
[13:45] <rharrison> Did you everpost some pics
[13:45] <russss> I guess that's a good case for a backup beacon
[13:45] <rharrison> It may turn up in the long term
[13:45] <rharrison> russss, you can fox it but it's bloody tricky
[13:46] <junderwood> Will post some pics when I get round to it. Currently just finishing redesign
[13:46] <russss> worked for BH4 ;)
[13:46] <rharrison> Backup tracker would be good though as they are quite cheap to produce.
[13:46] <junderwood> Backup beacon is a great idea. But what would you do?
[13:46] <russss> DF it
[13:46] <russss> tedious but possible
[13:46] <junderwood> The original transmitter would have allowed that
[13:47] <junderwood> but it was obviously not close enough to DF
[13:47] <russss> yeah but a backup beacon gives you more time
[13:47] <junderwood> maybe
[13:47] <rharrison> GSM is probably the best backup option
[13:47] <russss> maybe GSM is the answer than.
[13:47] <russss> or all of the above
[13:47] <junderwood> Not near Stowmarket it isn't!
[13:47] <rharrison> This can be done with a module and will get you close enough to DF
[13:47] <russss> heh.
[13:48] <russss> SPOT then ;)
[13:48] <junderwood> Bugger-all signal between Bury St Edmunds and Stowmarket
[13:48] <rharrison> I'm looking forward to BH5 this friday
[13:50] <m1x10> about the GSM module
[13:51] <m1x10> even if you cant have gps information
[13:51] <m1x10> you can make the GSM module return you the cell ID is currently connected
[13:51] <m1x10> then you call the provider and ask him gently where is located this cell
[13:51] <russss> the point is that's not useful if you've got no GSM signal ;)
[13:52] <SpeedEvil> naah
[13:52] <SpeedEvil> you sign up to one of the many 'where is my phone' services
[13:52] <russss> it seems like the GPS isn't that likely to fail anyway.
[13:52] <m1x10> ok, if we run out of everything, we cant fly anything
[13:52] <SpeedEvil> 9which also does not help if youve lost singal)
[13:52] <junderwood> GPS didn't fail on HelioSS
[13:53] <m1x10> with cell id you get an average position of where to look
[13:53] <m1x10> you can also check http://www.opencellid.org/
[13:53] <m1x10> which provides an API
[13:54] <m1x10> you send the cell id and returns you the location in JSON format
[13:54] <juxta> not much GSM around here ;p
[13:54] <m1x10> what do u mean?
[13:54] <juxta> coverage is poor
[13:54] <juxta> in rural areas
[13:54] <m1x10> hmm
[13:55] <juxta> I'm actually just using a mapping service right now to work out where the nearest GSM (& hence internet) coverage will be on thursday
[13:55] <SpeedEvil> The where is my phone services do triangulation
[13:55] <m1x10> yes
[13:55] <m1x10> its a good choice, but only as a backup
[13:56] <russss> UKHAS should just get one of those SPOT transmitters and use that
[13:56] <rharrison> Pre flight / launch checks will go a long way to prevent problems. But in the heat of the moment these are easily over looked when there are pressures all around. I have been there on more than one occasion. Infact I even launched the other day and I forgot to turn on my RX. Thankfully steve randall had set up his RX to get the signal and post via the internet.
[13:56] <m1x10> im currently coding the SM5100B GSM module from sparkfun
[13:56] <russss> assuming it doesn't go in the sea, it should be reusable quite a bit
[13:56] <rharrison> SPOT is very big and heavy compared to a tracker
[13:56] <juxta> russss: I have a spot, I used it on my first launch
[13:56] <russss> ah, I thought it was quite small
[13:56] <fsphil> cool, a lunch today from here would land on the isle of man -- if the predictor is 100% accurate anyway :)
[13:56] <russss> you can probably strip it down quite a bit
[13:56] <juxta> it's also not very sensitive, it's really dependant on facing skywards
[13:56] <SpeedEvil> SPOT also does not help if it lands upside down
[13:57] <rharrison> hehe I'd like to see that launch
[13:57] <juxta> I put just the PCB in mine russss
[13:57] <russss> ah cool
[13:57] <rharrison> the last 4 lines may save some pain
[13:57] <rharrison> http://www.robertharrison.org/icarus/wordpress/28/launch-check-list/
[13:59] <fsphil> oooh, a launch tommorow from here would land it smack in the middle of the scottish highlands!
[13:59] <russss> that would be a fun recovery
[14:00] <m1x10> oh icarus he sais !
[14:01] <m1x10> I plan to name my flight ALFA ICARUS too !
[14:02] <rharrison> Cool, I claim no rights, though by a qwirk of fate I may end up with the trade mark for Icarus in HAB. m1x10 I will not be exercising my IP rights :)
[14:03] <m1x10> hey harisson! you are the guy of this webiste?
[14:03] <m1x10> man you did too many flights !
[14:03] <rharrison> hehe
[14:03] <rharrison> A few
[14:03] <m1x10> ahhh
[14:03] <m1x10> cant wait !
[14:04] <rharrison> m1x10, it's worth the time and effort
[14:04] <m1x10> my spaceships will be called ALFA-ICARUS, BETA-ICARUS and so on..
[14:04] <juxta> rharrison: installed a tiny little ft90r in my car today for voice comms
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[14:05] <m1x10> you provide so much info on this website
[14:05] <juxta> if anybody here is awake when we're chasing, we could link via IRLP, it would be good to watch the tracker for us
[14:05] <m1x10> you got a Master on HAB !
[14:06] <juxta> m1x10: Rob is the man ;)
[14:06] Action: fsphil googles IRLP
[14:06] <m1x10> yes, i can confirm this !
[14:06] <m1x10> Rob where r u from?
[14:06] <juxta> fsphil: internet repeater link
[14:06] <fsphil> something like echo link?
[14:07] <juxta> internet repeater link protocol maybe
[14:07] <juxta> yeah, like echo link
[14:07] <juxta> used a bit more than echolink here I think
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[14:10] <jcoxon> afternoon
[14:11] <juxta> hey jcoxon
[14:11] <fsphil> ah, I've no IRLP node nearby and there doesn't appear to be a software client
[14:12] <juxta> :(
[14:12] <griffonbot> @BASE_DePauw: Launch #GPSL #ARHAB [http://twitter.com/BASE_DePauw/status/17866206988]
[14:12] <juxta> will see if our repeaters use echolink
[14:17] <russss> those guys launch a lot
[14:17] <jcoxon> yeah they are a uni iirc
[14:17] <m1x10> have anyone tried to fly a balloon an night? wouldn't be awesome to city the region's lights?
[14:17] <jcoxon> m1x10, fridays launch will be at night
[14:18] <jcoxon> though there won't be any cameras
[14:18] <juxta> I want to fly at night, but I think CASA would not be too keen on that
[14:18] <m1x10> the payload will not have cameras? why?
[14:18] <juxta> unless I launched after aviation curfew
[14:18] <jcoxon> because its a technology test
[14:19] <jcoxon> don't always need cameras
[14:19] <jcoxon> :-)
[14:19] <m1x10> no plz put a camera :)
[14:19] <jcoxon> juxta, launch before, let it drift into night :-)
[14:19] <juxta> hehe
[14:19] <jcoxon> no space for cameras
[14:20] <m1x10> :(
[14:20] <russss> long exposures won't work well on a balloon.
[14:20] <russss> it's moving too quick
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[14:22] <jcoxon> juxta what time is your launch on thurs?
[14:24] <juxta_> jcoxon: 02:00 - 03:00 UTC
[14:24] <juxta_> :(
[14:24] <griffonbot> @BASE_DePauw: BASE 45 19 kft #GPSL #ARHAB [http://twitter.com/BASE_DePauw/status/17866938829]
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[14:25] <jcoxon> eek
[14:26] <juxta_> time difference is a pain
[14:26] <jcoxon> it'll come in useful
[14:26] <juxta_> might launch a bit earlier if I can squeeze it in
[14:26] <jcoxon> got a nice new antenna for your UK based ft790r
[14:26] <jcoxon> was thinking - it might be easier to just use dl-fldigi on the linux box
[14:26] <juxta_> we're taking a bit of a different strategy, having 1 chase car starting right near the predicted landing site
[14:27] <juxta_> instead of the powerbook jcoxon?
[14:28] <jcoxon> well instead of streaming the audio
[14:28] <juxta_> oh right
[14:28] <juxta_> yep - got it
[14:28] <juxta_> why not do both?
[14:29] <juxta_> helps if we can see the waterfall
[14:29] <jcoxon> yeah
[14:29] <juxta_> unless you use the bitmap dump
[14:29] <jcoxon> exactly
[14:29] <jcoxon> then i could use xml-rpc to control fldigi as well
[14:36] <griffonbot> @BASE_DePauw: BASE 45 32 kft #GPSL #ARHAB [http://twitter.com/BASE_DePauw/status/17867664886]
[14:42] <juxta_> jcoxon: sent out an email on my list (which has been dodgy of late) - did it make it to you?
[14:44] <fsphil> how does the xml-rpc work for controlling fldigi?
[14:44] <fsphil> ah, n/m -- got it now
[14:50] <griffonbot> @BASE_DePauw: BASE 45 48 kft #GPSL #ARHAB [http://twitter.com/BASE_DePauw/status/17868512467]
[14:53] <fsphil> kft just doesn't look right
[14:53] <jcoxon> juxta_, yup
[14:56] <juxta_> thanks jcoxon
[14:57] <russss> kilofeet
[15:00] <griffonbot> @BASE_DePauw: BASE 45 58 kft #GPSL #ARHAB [http://twitter.com/BASE_DePauw/status/17869148781]
[15:02] <rharrison> juxta_, cool
[15:02] <rharrison> Do you have a radio licence yet?
[15:03] <rharrison> m1x10, Leeds Uk
[15:03] <juxta_> rharrison: yeah, full license. 55w TX on 2m in the car, should be in contact most of the time :)
[15:03] <rharrison> juxta_, cool
[15:03] <rharrison> It maks HAB'ing more fun when you have radio coms too
[15:04] <jcoxon> wow x forwarding via ssh is quite cool
[15:04] <rharrison> hey jcoxon excellent news on BH5
[15:04] <rharrison> jcoxon, most cool
[15:05] <jcoxon> rharrison, need to get it up in the air
[15:05] <jcoxon> probably going to land in the sea
[15:05] <rharrison> jcoxon, I'm sure you won't have a problem with that
[15:05] <rharrison> Well not this time ;->
[15:05] <jcoxon> landing in the sea?
[15:06] <rharrison> It's too early to call I would say for friday
[15:06] <rharrison> But possibly
[15:06] <rharrison> You want to send one up the country
[15:06] <jcoxon> well its impossible to tell as it depends on the float :-p
[15:06] <rharrison> jcoxon, true true
[15:06] <jcoxon> if it doesn't float it'll land in the sea
[15:06] <rharrison> I forget your floater stuff
[15:06] <jcoxon> but then good riddence
[15:07] <russss> heh
[15:07] <rharrison> whats the URL for the fPred
[15:07] <russss> the payload which keeps coming back
[15:07] <jcoxon> float pred?
[15:07] <rharrison> jcoxon, it has a habit of coming back to you
[15:07] <jcoxon> i know!
[15:07] <rharrison> I think you should rename it the boomerang
[15:08] <juxta_> x forwarding is the best :D
[15:08] <griffonbot> @BASE_DePauw: BASE 45 65 kft #GPSL #ARHAB [http://twitter.com/BASE_DePauw/status/17869673748]
[15:08] <rharrison> jcoxon, your bastardised predictor for float. Is that public?
[15:08] <jcoxon> spacenear.us/float-prediction
[15:10] <rharrison> OMG You may land in my backgarden
[15:10] <rharrison> Well according to the defs. on that site
[15:11] <jcoxon> fingers crossed and all
[15:12] <rharrison> Cool, Are you hoping to launch again if you get it back
[15:12] <jcoxon> depends
[15:12] <jcoxon> if the tank and pump work who knows whats next
[15:14] <griffonbot> @BASE_DePauw: BASE 45 72 kft #GPSL #ARHAB [http://twitter.com/BASE_DePauw/status/17870058785]
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[15:15] <jcoxon> rharrison, you around to track on friday?
[15:28] <fsphil> how neat would that be, if it did land in one of our gardens
[15:29] <griffonbot> @BASE_DePauw: BASE 45 burst #GPSL #ARHAB [http://twitter.com/BASE_DePauw/status/17871041614]
[15:29] <jcoxon> make life a lot easier
[15:38] <griffonbot> @BASE_DePauw: BASE 45 coming down 42 kft #GPSL #ARHAB [http://twitter.com/BASE_DePauw/status/17871661633]
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[16:12] <cuddykid> Hi all, with my 1st launch coming ever closer, I have just had a thought! Do you need insurance for launching a HAB as what happens if it lands on someones house or head?!!
[16:12] <russss> nobody really launches with insurance
[16:13] <russss> they're generally light enough not to cause enough damage if they fall on your head.
[16:13] <cuddykid> ok, just have to hope the parachute opens! haha
[16:14] <cuddykid> ping rharrison
[16:19] <griffonbot> @BASE_DePauw: BASE 45 landed in corn recovery underway #GPSL #ARHAB [http://twitter.com/BASE_DePauw/status/17874426965]
[16:19] <m1x10> sparkfun has top post for HAB check: http://www.sparkfun.com/commerce/categories.php
[16:27] <jcoxon> oh yeah
[16:28] <jcoxon> m1x10, stilldavid and brennen both work for sparkfun and are on here occasionally
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[16:30] <m1x10> that's cool
[16:31] <m1x10> Im already waiting my two sensors. Humidity and pressure.
[16:31] <m1x10> the interesting point is that of the pressure to altitude connection
[16:34] <m1x10> http://www.engineeringtoolbox.com/air-altitude-pressure-d_462.html
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[16:51] <rharrison> jcoxon, will be able to track from leeds
[16:51] <rharrison> I'm setting up antenna on office roof. Esp if it comes in my direction
[16:52] <rharrison> ping cuddykid
[16:52] <cuddykid> hey rharrison!
[16:52] <rharrison> You pinned
[16:52] <cuddykid> I think i've got it sorted now
[16:52] <rharrison> pinged even
[16:53] <rharrison> cool
[16:53] <cuddykid> It was just about requesting notam
[16:53] <rharrison> jcoxon, is the man really
[16:53] <rharrison> He's loads more experiance than me
[16:53] <rharrison> where are you based cuddykid
[16:53] <cuddykid> ok, no worries, hopefully it should be ok!
[16:53] <cuddykid> urm, worcester
[16:53] <rharrison> Humm tricky few flight paths around there
[16:53] <rharrison> See what happens
[16:54] <cuddykid> yep, fingers crossed!
[16:54] <cuddykid> provided it doesn't go north to birmingham!
[16:54] <rharrison> CAA are more concerned with air traffic. The cities are your lookout
[16:55] <cuddykid> ahh ok
[16:55] <cuddykid> hmm, if not, i'll just have to make the trip down to cambridge :)
[16:56] <griffonbot> @BASE_DePauw: BASE 45 all safely back headed home #GPSL #ARHAB [http://twitter.com/BASE_DePauw/status/17876972956]
[16:58] <rharrison> cuddykid, The adv. of using camb for your first launch is that there is nomally some experiance on hand which can be invaluble for your first launch
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[17:08] Action: fsphil still hasn't heard anything about the notam
[17:22] <jcoxon> yeah its a fun game
[17:24] <juxta_> ping jcoxon
[17:25] <jcoxon> hey juxta_
[17:25] <juxta_> hey there
[17:25] <juxta_> I suspect I should get to bed, but I was going to give you a heads up that I found a crash I can replicate in dl-fldigi
[17:25] <jcoxon> oooo
[17:25] <juxta_> (the latest version, only happens in HAB mode)
[17:25] <jcoxon> do tell
[17:25] <jcoxon> and daniel richman isn't here!
[17:26] <juxta_> was trying it on the carputer, crashing everytime I tried to start it - read the crash report, it was a winsock issue
[17:26] <jcoxon> windows?
[17:26] <juxta_> it doesnt handle an internet connection not being present gracefully
[17:26] <juxta_> yeah
[17:26] <juxta_> if there's no net, it crashes, if I deal the 3G it's fine
[17:27] <juxta_> I guess it's when it's trying to load the payload list
[17:27] <juxta_> dial* the 3G, even
[17:27] <jcoxon> hmmm
[17:28] <jcoxon> when you have time could you submit it as an issue
[17:28] <juxta_> sure, will do so now
[17:28] <jcoxon> http://github.com/jamescoxon/dl-fldigi/issues
[17:28] <jcoxon> will kick danielrichman
[17:28] <juxta_> haha
[17:28] <jcoxon> we should really sort this though
[17:28] <juxta_> also - not sure if it's intentional that you can't resize the window on win32 in HAB mode?
[17:28] <jcoxon> yeah its intentional
[17:28] <juxta_> okay
[17:29] <jcoxon> but i think we need to unintentinal it
[17:29] <juxta_> hehe
[17:29] <jcoxon> as you are the second to request that
[17:32] <juxta_> jcoxon: if any failed winsock calls aren't gracefully closed, that might explain the other misc crashing issue you had reported by W8BLK
[17:33] <juxta_> at least I think his callsign is W8BLK?
[17:33] <jcoxon> WB8ELK
[17:33] <jcoxon> yeah could well be
[17:33] <juxta_> alrighty - raised it as an issue
[17:34] <jcoxon> great
[17:35] <juxta_> funny how ubiquitous internet access has become these days
[17:35] <jcoxon> definitely need to fix this one
[17:36] <juxta_> okay, I'm off to bed
[17:36] <jcoxon> night
[17:36] <juxta_> will be up early to go buy helium etc!
[17:36] <jcoxon> hehe
[17:36] <juxta_> night all
[17:36] <jcoxon> cool cool
[17:36] <jcoxon> night
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[17:46] <fsphil> woo! I haz Canon A560 :)
[17:46] <jcoxon> nice camera
[17:46] <fsphil> it's so light! no wonder it's popular for hab'ing
[17:46] <jcoxon> and runs chdk
[17:47] <fsphil> yes, I must get started on that soon
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[17:49] <fsphil> odd dc input voltage, 3.15v
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[19:08] Nick change: brennen -> brennen|lunch
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[19:47] <cuddykid> woohoo! Got my flight computer all finished and hooked up with 1/4 wave antenna. Camera hacked and ready to go. Just need balloon and some helium and we're off!! :)
[19:48] <Randomskk> :D
[19:48] <Randomskk> test test test
[19:49] <jcoxon> lots of testing
[19:49] <jcoxon> and perhaps a wiki page
[19:49] <jcoxon> :-p
[19:49] <Randomskk> go drive over the meridian
[19:49] Action: Randomskk has now debugged in a layby in a car the other side of the meridian to cambridge
[19:50] <jcoxon> hehe
[19:50] <jcoxon> wow my backup beacon is till going
[19:51] <cuddykid> yep, will test and test away!! And, yes, might set up a blog or for sure up date my wiki page!
[19:51] <jcoxon> 8 days
[19:51] <jcoxon> good to know it'll last a long time
[19:51] <cuddykid> wow!
[19:52] <cuddykid> jcoxon, is that off 2 aa's?
[19:52] <jcoxon> 3 aas
[19:52] <jcoxon> lithiums though
[19:52] <jcoxon> which were nearly full
[19:52] <cuddykid> nice!
[19:53] <jcoxon> gives you that little bit more time to go and find it
[19:53] <cuddykid> in fact, regarding my power for the flight stuff (arduino, gps, ntx2) at the moment i've got it setup for 8 lithium aa's. Would 4 do the trick do you think?
[19:53] <jcoxon> as in 2 banks of 4?/
[19:53] <cuddykid> no, just one 8 aa holder
[19:54] <jcoxon> then through a regulator?
[19:54] <cuddykid> and just 1 bank of 4 to replace the 8 aa's
[19:54] <cuddykid> no, the 8aa's just go straight to arduino
[19:54] <Randomskk> uh what
[19:54] <jcoxon> well lithums are more like 1.7v then 1.5v
[19:54] <Randomskk> so like ~12v?
[19:54] <Randomskk> ~13.6?
[19:55] <Randomskk> it's within spec but like
[19:55] <Randomskk> that's 8.6V being burnt off
[19:55] <cuddykid> yeah, ~12v
[19:55] <Randomskk> as heat
[19:55] <jcoxon> so 4 will give 6.8v
[19:55] <Randomskk> massively, massively wasteful
[19:55] <Randomskk> aah but
[19:55] <Randomskk> how ldo is the onboard reg
[19:55] <Randomskk> it was /shit/ last I saw, like 7v min
[19:55] <jcoxon> cuddykid, i use 4 because i use a 3.3v arduino
[19:56] <Randomskk> there are eight traces left to route on this pcb
[19:56] <Randomskk> and they are all friggin awful
[19:56] <cuddykid> ok, will do some testing with both 4 and 8
[19:56] <jcoxon> cuddykid, 6 would certainly be fine
[19:57] <cuddykid> jcoxon, cool, will have a look on ebay for a 6 holder :)
[20:04] <DanielRichman> I found that when I crossed the meridian the payload started infinite loopin :D
[20:05] <DanielRichman> schoolboy error tbh
[20:09] <jcoxon> cant' really tell until you test :-)
[20:11] <DanielRichman> jcoxon: 8 day beacon? niice!
[20:11] <DanielRichman> arduino + ntx2?
[20:12] <jcoxon> yup
[20:12] <jcoxon> 3 strings every 10mins of CW and Hell
[20:12] <Randomskk> worth increasing the transmit frequency?
[20:12] <Randomskk> go to once every 5 mins for 4 days
[20:12] <jcoxon> pd3em found it last time
[20:13] <Randomskk> patience of a god
[20:13] <jcoxon> yeah
[20:13] <DanielRichman> if you had a transceiver you could include a function to key it up
[20:14] <DanielRichman> jcoxon: I suppose if you had a uber-ldo regulator and were fully using the avr's sleep functions you could drop the idle current to < 1mA
[20:14] <DanielRichman> how much does it chew when transmitting?
[20:14] <jcoxon> DanielRichman, oh yes very much so
[20:14] <jcoxon> even a watchdog loop would do it
[20:15] <DanielRichman> Last time I checked the NTX2 chews so little when idle that my poor multimeter reads 0 mA
[20:15] <jcoxon> http://interface.khm.de/index.php/lab/experiments/sleep_watchdog_battery/
[20:15] <fsphil> or skip the vreg entirely
[20:15] <jcoxon> i've skipped the vreg on this one
[20:15] <DanielRichman> You're right; neither the AVR nor the NTX2 care
[20:15] <Randomskk> new AVRs will picoamps
[20:15] <Randomskk> :o
[20:15] <DanielRichman> jcoxon: what does your avr do when idle?
[20:16] <Randomskk> </marketing> but they are excellent really
[20:16] <jcoxon> just delay
[20:16] <jcoxon> i know i could be better
[20:16] <DanielRichman> heh that's 20mA isn't it?
[20:16] <jcoxon> but i just went simple
[20:16] <DanielRichman> well 8 days is pretty good :P
[20:16] <jcoxon> exactly
[20:16] <jcoxon> we want it to die eventually
[20:17] <fsphil> plenty of time to give up searching !
[20:17] <jcoxon> or when we give up searching it'll continue to break car alarms
[20:17] <Randomskk> avr can do 100nA
[20:17] <DanielRichman> naah look at the conspiracy theories that UVB-76 (I think?) generated
[20:17] <DanielRichman> you want to have that going for months
[20:18] <jnd> Randomskk: when it's dead yes
[20:18] <jcoxon> http://www.flickr.com/photos/jcoxon77/4768947356
[20:18] <Randomskk> jnd: sleep mode
[20:18] <DanielRichman> yeah in POWERDOWN I think it's called
[20:18] <jcoxon> thats how i'm rigging my ballast tank this time
[20:18] <DanielRichman> the normal sleep mode (IDLE) chews quite a lot
[20:18] <Randomskk> yea
[20:18] <jnd> power down is same as dead
[20:18] <jnd> it needs external signal to turn it on
[20:19] <jcoxon> jnd, perhaps something like a photodiode to turn it on during the day
[20:19] <jcoxon> or we could stick some solar panels on
[20:19] <jcoxon> with a supercap
[20:19] <jnd> power down with watchdog takes few uA which is actually usable
[20:20] <fsphil> does that label say "inoffensive"?
[20:21] <jcoxon> thats the french label
[20:21] <jcoxon> english label is on the side
[20:21] <fsphil> ah, makes sense
[20:21] Nick change: brennen|lunch -> brennen
[20:23] <jnd> on this type of app watchdog is necessary anyway
[20:32] <jcoxon> hehe the beacon is on its 534 loop
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[20:35] <fsphil> chdk should just be a matter of copying the files to the disk and making it bootable?
[20:36] <DanielRichman> "making it bootable" requires a bit of DD messing iirc
[20:36] <DanielRichman> and then setting the lock switch
[20:36] <DanielRichman> oh and if your card is bigger than fat 16 (?) allows you have to partition it
[20:36] <fsphil> aah
[20:36] <DanielRichman> there's quite a nice guide somewhere
[20:36] <fsphil> I didn't lock anything
[20:37] <fsphil> the chdk site is a bit of a mess
[20:37] <DanielRichman> the lock switch thing is so that the camera auto-loads it
[20:37] <DanielRichman> you can load it manually
[20:37] <DanielRichman> I think by choosing the firmware update option but that requires a citation; don't rely on that
[20:38] <fsphil> locking did the trick
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[20:59] <fsphil> this works nicely: http://chdk.wikia.com/wiki/UBASIC/Scripts:Time_Lapse_Photography
[20:59] <fsphil> though the screen stays on, will waste power
[21:04] <jnd> can you turn it off?
[21:04] <fsphil> the display button doesn't seem to work when the script is running
[21:10] <jnd> you can set in the script
[21:13] <fsphil> I just tried: click "display"
[21:13] <fsphil> no effect
[21:13] <fsphil> I can turn the display of before running the script, and the screen stays off
[21:13] <DanielRichman> the display key won't work in ALT mode
[21:13] <DanielRichman> but I found that if I exit ALT mode our script stops :X
[21:14] <fsphil> DanielRichman, ah you're right!
[21:14] <DanielRichman> so make sure it still runs
[21:14] <jnd> well at least one lua script can do it so why not ubasic?
[21:14] <jnd> other option is set the powersave override in menu
[21:15] <fsphil> I've the powersave set to 10 seconds, but the script is stopping it too :)
[21:16] <DanielRichman> oh I set the powersave on 10 minutes or so
[21:17] <DanielRichman> I thought that refers to putting the whole thing to sleep
[21:17] <fsphil> just the display
[21:17] <fsphil> aah: set_backlight x
[21:17] <fsphil> lets see
[21:21] <fsphil> success!
[21:22] <griffonbot> @Daniel_Richman: *would* be ordering #alienhab electronic components, but... http://bit.ly/cpcl5u "Awaiting Delivery" -.- #ukhas [http://twitter.com/Daniel_Richman/status/17893820743]
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[23:42] <jcoxon> hey eroomde
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[00:00] --- Wed Jul 7 2010