highaltitude.log.20110221

[00:03] <NigeyS> http://tinypaste.com/20591
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[00:06] <Lunar_Lander> YAY sparkfun accepts PayPal
[00:06] <fsphil> see it reading, but there's nothing on the snprintf line about temperature or light?
[00:08] <fsphil> hmmm... http://www.bbc.co.uk/news/uk-12517762
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[00:10] <NigeyS> $$ATS1,1,00:09:39,51.48678,-3.14730,13,24,301*32AB
[00:10] <NigeyS> wooohooo
[00:10] <NigeyS> that'll be the ATS flight computer complete .. kinda :D
[00:12] <Lunar_Lander> can I ask another dumb question?
[00:13] <LazyLeopard> fsphil: Ugh. Where's the "Repeal the Daylight Saving Act (1916)" petition?
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[00:18] <Lunar_Lander> when you have the Sensing Board
[00:18] <Lunar_Lander> how do you connect it to the OpenLog?
[00:18] <MrCraig> night night
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[00:21] <NigeyS> lunar, i think its a serial logger ?
[00:22] <Lunar_Lander> yes
[00:22] <Lunar_Lander> I was told above that the OpenLog belongs to the board
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[00:40] <Zuph> It is girl scout cookie season. This is more exciting than I could possibly describe.
[00:40] <Lunar_Lander> what does that mean?
[00:40] <Lunar_Lander> I mean what happens
[00:41] <Zuph> Girl Scouts sell cookies.
[00:41] <Zuph> It is possible to buy girl scout cookies during girl scout cookie season.
[00:41] <Zuph> The rest of the year? You must do without.
[00:42] <Lunar_Lander> oh
[00:43] <Zuph> These are exciting cookies damnit.
[00:44] <Lunar_Lander> yeah
[00:44] <Lunar_Lander> xD
[00:44] <NigeyS> Zuph
[00:45] <Zuph> NigeyS
[00:45] <NigeyS> $$ATS1,329,00:44:09,51.48680,-3.14734,11,24,109*DE6E ...... completeo!
[00:45] <Zuph> Congrats!
[00:45] <NigeyS> :D bout time eh lol
[00:45] <Lunar_Lander> can I decode?
[00:45] <Lunar_Lander> :P
[00:45] <Zuph> heh
[00:45] <Lunar_Lander> you are at 51.486° North
[00:45] <Lunar_Lander> 3.147° West
[00:45] <NigeyS> yuppers
[00:45] <Lunar_Lander> 11 ft high?
[00:45] <NigeyS> metres..lol
[00:46] <Lunar_Lander> xD
[00:47] <Zuph> NigeyS is very tall.
[00:47] <NigeyS> haha im only 6ft 1 :o
[00:47] <Lunar_Lander> btw, what I mentioned about the ham exam earlier
[00:47] <Lunar_Lander> you need to know all the country codes
[00:48] <NigeyS> :o
[00:48] <Lunar_Lander> is that in the US also?
[00:48] <Zuph> hah, nope
[00:48] <Zuph> Ham license is stupid easy to get here.
[00:48] <Lunar_Lander> they have questions like "Which of the following are african callsigns only?"
[00:48] <Lunar_Lander> and the four answers have like five callsigns
[00:49] <Zuph> I almost went from no license to Extra class (highest class) in one sitting. Missed the extra test by 3 questions.
[00:49] <Lunar_Lander> yeah
[00:49] <Lunar_Lander> we have a Class E which is limited to some bands and 100 Watt
[00:49] <Lunar_Lander> and you can get to Class A (which is kind of "unlimited") with a extra exam in tech
[00:50] <Lunar_Lander> the class E is tech, operation and law
[00:50] <Lunar_Lander> IIRC
[00:50] <Lunar_Lander> but I know some already :P
[00:51] <Lunar_Lander> PY is Brazil, LU is Argentina, CE is Chile, VK is Australia and VE is Canada
[00:52] <Lunar_Lander> and because Germany starts with D, they have a question on the distribution of the signs DA to DZ
[00:53] <Lunar_Lander> and the answer is, that DA to DR belong to Germany, DS and DT to South Korea and DU to DZ to the Philippines
[00:53] Action: nevyn never got why australia ended up with VK
[00:53] <Lunar_Lander> yeah
[00:53] <nevyn> when the iso 2char for Australia is AU
[00:54] <Lunar_Lander> South Africa also
[00:54] <Lunar_Lander> not ZA
[00:54] <Lunar_Lander> but ZS I think
[01:01] <NigeyS> lalala crimping cables at 1am .. fun fun
[01:03] <Zuph> You could come over here and debug flight computers at 8pm.
[01:03] <Lunar_Lander> or eat cheese with me at 2 pm
[01:03] <Lunar_Lander> :)
[01:03] <Zuph> Where are you located Lunar_Lander?
[01:03] <NigeyS> hmm choics choices lol
[01:03] <Lunar_Lander> Germany
[01:04] <Zuph> ah
[01:04] <Lunar_Lander> Lower Saxony
[01:04] <Lunar_Lander> :)
[01:04] <Lunar_Lander> btw, barely
[01:04] <Lunar_Lander> you see
[01:04] <Lunar_Lander> Lower Saxony was created after WWII
[01:04] <Lunar_Lander> and Osnabruck was decided upon to lie in LS
[01:05] <Lunar_Lander> because there were discussions to include it into North-Rhine Westphalia
[01:05] <Lunar_Lander> and so it now is that you only have to go to the western end of the town to be at the state border
[01:05] <Lunar_Lander> :P
[01:07] <Zuph> German politics, feh
[01:07] <Lunar_Lander> well British
[01:07] <Lunar_Lander> that was under British occupation
[01:08] <Zuph> Post war politics, feh.
[01:08] <Lunar_Lander> as you know the north-west was under british occupation, the west was french, the south was american and the east soviet
[01:12] <Zuph> Lately media here has been going off about "the success of the mittelstand", as though it were something that only those crafty Germans could have thought up.
[01:12] <Lunar_Lander> oh
[01:13] <Zuph> I've seen like three lengthy articles on it in the past 2 weeks.
[01:13] <Lunar_Lander> yeah
[01:15] <Lunar_Lander> did they write it as the german word?
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[01:17] <Zuph> Yes, paired with a lengthy explanation of what makes a mittlestand different from what the direct translation would imply.
[01:17] <Lunar_Lander> strange
[01:18] <Lunar_Lander> as strange as the mathematicians did it when they took over the matrix terms
[01:18] <Lunar_Lander> you know
[01:18] <Lunar_Lander> eigenvalue, eigenvector and eigenspace
[01:21] <Zuph> hah
[01:21] <Zuph> yes.
[01:21] <Zuph> Painful terms
[01:21] <Lunar_Lander> yeah
[01:22] <Lunar_Lander> if I hadn't already called it "Project Stratosphere"
[01:22] <Zuph> To me, anyway. Linear Algebra has never been my strong suit.
[01:22] <Lunar_Lander> I could have named it "Project Eigenspace"
[01:22] <Lunar_Lander> XD
[01:22] <Lunar_Lander> yeah
[01:22] <Lunar_Lander> same here actually
[01:23] <Lunar_Lander> I have to get better in setting up the characteristic polynominals
[01:23] <Lunar_Lander> btw that was a good one
[01:24] <Lunar_Lander> this math lecture was held by one of the doctoral students because the professor was on a conference
[01:24] <Lunar_Lander> and then he said "Now we will set up the characteristic polynominal of the matrix"
[01:24] <Lunar_Lander> and he writes a "Chi=" on the board
[01:24] <Lunar_Lander> and then
[01:24] <Lunar_Lander> "This is a letter, I think it's Chi, I don't know right now"
[01:25] <Zuph> hah
[01:25] <Lunar_Lander> xD
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[01:27] <Zuph> My linear algebra class was taught during the 10 week summer semester, and the lecture hall was un air-conditioned. It was not fun.
[01:27] <Lunar_Lander> yeah I can imagine
[01:27] <Lunar_Lander> when we had math that was in the winte
[01:27] <Lunar_Lander> winter
[01:28] <Lunar_Lander> and the winter 2009/10 had snow almost every day
[01:28] <Lunar_Lander> actually carried on into March
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[01:29] <Lunar_Lander> Kilo Bravo Nine Zulu Whiskey Lima
[01:29] <Lunar_Lander> yeah practise :D
[01:32] <KB9ZWL> lol
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[01:34] <Zuph> Got our club call at the hackerspace finally: N1LVL
[01:35] <Lunar_Lander> November One Lima Victor Lima
[01:35] <Lunar_Lander> :P
[01:35] <Lunar_Lander> what was it again
[01:36] <Lunar_Lander> USA has the callsigns K, N, W
[01:36] <Lunar_Lander> and AA to AK?
[01:38] <Zuph> hah
[01:39] <Zuph> I am Kilo Juliet Fower Whiskey Tango Indigo
[01:40] <Lunar_Lander> KJ4WTI
[01:40] <Lunar_Lander> hi Brad
[01:40] <Lunar_Lander> :D
[01:40] Action: SpeedEvil has no ham.
[01:40] <Zuph> heh :-p
[01:40] <Lunar_Lander> qrz.com is cool
[01:41] <Zuph> Yes it is.
[01:41] <Lunar_Lander> yay bill is there also
[01:42] Action: NigeyS throws SpeedEvil some ham :P
[01:42] <Lunar_Lander> so
[01:42] <Lunar_Lander> AAA to ALZ is USA
[01:42] <Zuph> Hell if I know :-p
[01:43] <Lunar_Lander> :P
[01:44] <Lunar_Lander> btw it says australia has also AX
[01:45] <natrium42> moin Lunar_Lander
[01:46] <Lunar_Lander> hello
[01:46] <Lunar_Lander> natrium begins with VE I assume?
[01:46] <natrium42> alles krass?
[01:46] <Lunar_Lander> :)
[01:46] <Lunar_Lander> ja
[01:46] <Lunar_Lander> bei dir?
[01:46] <natrium42> konkret!
[01:46] <natrium42> ich bin in kalifornia
[01:46] <Lunar_Lander> cool
[01:46] <natrium42> gestern angekommen
[01:46] <Lunar_Lander> ja
[01:46] <natrium42> :)
[01:46] <natrium42> any upcoming launches?
[01:47] <Zuph> natrium42: Hopefully us!
[01:47] <Zuph> :-P
[01:47] <NigeyS> mines looking good for end march, beginning of april
[01:47] <Lunar_Lander> so you have to change your callsign right?
[01:47] <natrium42> Zuph: yay \o/
[01:47] <Lunar_Lander> like N/VE...
[01:47] <Zuph> natrium42: Do you know off the top of your head the applicable Canadian laws for ballooning? Something I can google?
[01:47] <Lunar_Lander> as you are in the US
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[02:25] <Lunar_Lander> lol
[02:25] <Lunar_Lander> I got 94% in the "operations" part of the ham exam
[02:25] <Lunar_Lander> in that simulation
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[03:15] <Dan-K2VOL> Hello anyone awake?
[03:16] <Dan-K2VOL> Bill brown has the White star hf tx on the air if anyone wants to try copying: I'm doing an on the air test from my farmhouse with the WhiteStar balloon transmitter on 7.102 MHz USB (audio will center around 1610 Hz). It's running about 1 watt at 12 volts.....the actual flight will be running 16 to 18 volts and the output power will be 1.5 watts.
[03:16] <Dan-K2VOL>  
[03:16] <Dan-K2VOL> It will be running until about midnight local time tonight so if anyone hears it please let me know.
[03:16] <Dan-K2VOL>  
[03:16] <Dan-K2VOL> It gives a short CW message with just altitude in meters....followed by DominoEX16 followed by 110 baud ASCII RTTY followed by a short burst of Hellscreiber also just sending the altitude.
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[03:26] <Lunar_Lander2> hello Dan
[03:28] <Dan-K2VOL> Hi Lunar
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[09:36] <Lunar_Lander> hello
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[09:59] <jgrahamc_> Morning all
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[10:21] <mattltm> Hi all :)
[10:21] <fsphil> ello ello
[10:21] <mattltm> Whats up fsphil? Hows things?
[10:24] <jgrahamc_> Morning chaps
[10:36] <eroomde> morning jgrahamc_
[10:36] <eroomde> how are things?
[10:37] <jgrahamc_> Things are going well. I just have the Lassen IQ to integrate and I'm done. Over the weekend soldered everything else down and it worked nicely.
[10:37] <jgrahamc_> You?
[10:38] <eroomde> I just completed a road trip for work to Lausanna to pick up an airship. She flies wonderfully and I'm rather excited. Just building up to programming the autopilot
[10:38] <eroomde> Lausanne*
[10:38] <jgrahamc_> How large is the airship?
[10:38] <eroomde> I also had my bday over the weekend so some build-up is required this morning
[10:38] <eroomde> 9m long
[10:38] <eroomde> this is it: http://www.youtube.com/watch?v=lY54VUsLwsY
[10:38] <eroomde> the one being chased
[10:39] <jgrahamc_> Happy birthday! Lausanne is a nice place.
[10:39] <jgrahamc_> You do that sort of thing for a job?
[10:39] <eroomde> not bad I know
[10:40] <SpeedEvil> eroomde: Neat!
[10:40] <eroomde> especially when one can expense the burgundy you have for dinner on the way back
[10:40] <jgrahamc_> Very cool stuff.
[10:40] <russss> eroomde: awesome
[10:40] <eroomde> but yes, I'll be putting an autopilot on it this week, then integrating our computer vision pack
[10:40] <russss> how much is the helium fill on that one?
[10:40] <SpeedEvil> this is the hydrography ones?
[10:41] <eroomde> then we have a deployment in davos in about 4 weeks, to do environmental monitoring and avalanche detection, or something. We just gather the data
[10:41] <eroomde> russss: 20m^3
[10:41] <eroomde> so 3 L bottles
[10:41] <russss> ouch :P
[10:41] <jgrahamc_> Seriously awesome stuff. I am very interested in autonomous vehicles.
[10:41] <eroomde> me too!
[10:41] <eroomde> i want to use the vehicle when this project has finished for some other reserahc
[10:42] <russss> the blimp that jontyw and I were going to build has kind of stalled due to lack of time
[10:42] <russss> not going to happen in time for Maker Faire I don't think :/
[10:42] <eroomde> there is some redundancy in various control mechanisms (bopth rudder and elevator aswell as vectored fans) so it'd a good platform for playing with fault tolernat control and machine learning
[10:42] <jgrahamc_> russss: you are going to Maker Faire in Newcastle?
[10:42] <russss> jgrahamc_: yep, are you?
[10:43] <russss> we are also running the hackerspaces/soldering area
[10:43] <jgrahamc_> I got invited to go and haven't decided if I am or not. They were hoping I would have launched my HAB by then, or get me to talk about Babbage.
[10:43] <jgrahamc_> Neat.
[10:44] <jgrahamc_> I'm close to ready to launch my HAB, but need the wind to cooperate, see: http://www.srcf.ucam.org/cuspaceflight/hourly-predictions/
[10:44] <russss> so at least we're doing *something* I guess, heh
[10:44] <eroomde> jgrahamc_: would you like me to adjust that to your scenario?
[10:44] <eroomde> we have finished with what we were doing
[10:44] <eroomde> in terms of rates and burst alts
[10:45] <jgrahamc_> Actually, that would be handy. I need to do some calculations.
[10:45] <eroomde> sure, just let me know
[10:46] <russss> eroomde: so did I remember rightly that you guys had some kind of large-scale impulse-sealing device?
[10:46] <eroomde> yes
[10:46] <jgrahamc_> The online calculator says that for 1500g balloon with a 1100g payload with a 34km burst I'll get an ascent rate of 5.7ms-1
[10:48] <jgrahamc_> Let's assume a slow descent rate at 3.5ms-1 to see how far it will drift.
[10:48] <russss> eroomde: any chance we could perhaps use it at some point?
[10:49] <jgrahamc_> So how about up at 5.7ms-1, down at 3.5ms-1 and burst at 34km?
[10:50] <jgrahamc_> Launching from Churchill, of course.
[10:50] <jgrahamc_> BTW eroomde: do you know this guy? http://www.classics.cam.ac.uk/faculty/staff-bios/academic-research-staff/henry_hurst/
[10:51] <eroomde> sorry all gimme 5 mins just on phone
[10:51] <jgrahamc_> No worries, I shouldn't be here either :-)
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[10:54] <Dooberry> Morning.
[10:54] <Upu> morning
[10:54] <jgrahamc_> Hello
[10:55] <Dooberry> Struggling today
[10:55] <Dooberry> drove to Bruges and back this weekend
[10:55] <Dooberry> although on the bright side had a good steak on Saturday.
[10:56] <Dooberry> Had a little bit of garlic butter-type sauce on it...fantastic.
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[10:59] <fsphil> I got some storage bins yesterday, finally giving up on my chaos method of storage ;)
[11:05] <Dooberry> Ikea?
[11:05] <SpeedEvil> Ebay is great
[11:06] <jgrahamc_> It can be. Bought anything fun?
[11:06] <SpeedEvil> http://cgi.ebay.com/250x-Strong-Plastic-Microwave-Containers-Lids-650ml-/260617871331?pt=UK_BOI_Restaurant_RL&hash=item3cae091fe3
[11:06] <SpeedEvil> though somewhat cheaper than that
[11:06] <SpeedEvil> (storage)
[11:07] <jgrahamc_> I use those for storing all my little bits and pieces. But I got them by ordering take away food!
[11:07] <SpeedEvil> :)
[11:07] <SpeedEvil> I have around 60 in my freezer, with various stuff in.
[11:08] <SpeedEvil> It's _way_ easier to cook one huge, huge pot of curry, than 20 little ones.
[11:09] <jgrahamc_> Listening to the RTTY transmitted by my HAB made me very happy over the weekend. Tried to explain to my wife but she gave me the 'WTF are you talking about' look :-)
[11:09] <SpeedEvil> :)
[11:10] <fsphil> haha
[11:10] <fsphil> it's a great moment
[11:10] <GW8RAK> Welcome to the club
[11:10] <fsphil> Dooberry, B&Q
[11:11] <jgrahamc_> Having found a girlfriend (long ago), what I need now is a nerdfriend :-)
[11:11] <fsphil> gits overcharged me for some bits, have to go back next weekend
[11:15] <Dooberry> on a completely separate note, I presume there's been no update on upcoming launches?
[11:16] <Dooberry> Just checking ukhas but nout's changed.
[11:19] <jgrahamc_> I haven't yet set a date but my HAB is likely to launch in March
[11:20] <fsphil> yea, I'm in march too if the weather behaves
[11:20] <jgrahamc_> Where are you going to launch from?
[11:21] <GW8RAK> This week is decision time for the phone bit and if it is scrapped, then late March is my timeline as well.
[11:21] <jgrahamc_> What's the phone bit?
[11:22] <GW8RAK> Just to send a text message on landing.
[11:22] <GW8RAK> If we launch and importantly land in Wales, the topography may make close to ground RTTY difficult.
[11:22] <GW8RAK> The phone is just a backup
[11:23] <jgrahamc_> Bit like me. I have a GSM backup in mine (using a Telit module)
[11:26] <Dooberry> I'm planning on just using a battered old iPhone and Glympse, as the reception in Norfolk is pretty good.
[11:27] <GW8RAK> I'm trying to scounge a Nokia 6310 at present. Tried to talk to a 6300, but without success.
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[11:42] <jgrahamc_> I have a couple of old Nokias at home. Shoot me a mail at jgc@jgc.org to remind me to look at them and see if there's a model you can use.
[11:43] <GW8RAK> jgrahamc_ thanks very much. It's on it's way.
[11:43] <Upu> 6230i any use ?
[11:43] <jgrahamc_> Will look tonight. Not sure what models I have.
[11:44] <GW8RAK> Or more to the point, it is a 6310 I'm after, to be used as seen here http://jason.mumby.co.nz/?p=77
[11:46] <Upu> I have a 6300 and 6230i
[11:46] <Upu> 6310's are rocking horse doo doo
[11:46] <Upu> very popular phones
[11:50] <GW8RAK> It seems so. I've tried the 6300 and although it is easily done, the serial speed is high which causes me problems. The 6310 has a slow serial speed with means I can use any spare Picaxe pins.
[12:00] <Upu> trouble is they were a) really really good b) fit alot of high end cars so they are still sought after
[12:01] <Upu> they were the last proper phone with a decent battery life before everyone got giddy and tried to make phones into cameras,computers kitchen sink etc
[12:01] <Upu> </rant>
[12:01] <Upu> afk :)
[12:02] <GW8RAK> And yet they are very primitive compared to smart phones etc.
[12:02] <Upu> I disagree
[12:02] <Upu> they are a phone
[12:03] <Upu> the battery lasts 4 days
[12:03] <Laurenceb> nokia 1100 ftw
[12:03] <Upu> signal is good
[12:03] <Upu> they do what they do brilliantly
[12:03] <Laurenceb> i can get 2 weeks battery life
[12:03] <Upu> "smart"phones have dumb battery life, 12 hours seems accepable
[12:03] <Upu> a bummer if you need an ambulance at 12 hours and 1 min :)
[12:03] <Upu> anyway really afk now
[12:04] <GW8RAK> I don't mean they aren't good phones, but their capabilities are limited by today's standards. I've always had Nokia, because of the long battery life.
[12:06] <GW8RAK> What has always puzzled me about phones is that people such that phone X is good and phone Y is bad. Yet I've never had problems with any of mine (admittedly a total of 4 in 16 years) nor with network coverage. They just do what I want them to do.
[12:06] <GW8RAK> How much difference can there be?
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[12:35] <GroupO> Hey guys. I'm getting an error when compiling a code on arduino. I know this is out of context but it says "error: request for member 'begin' in '2', which is of non-class type 'int'". I don't get how to redefine the variable
[12:36] <jgrahamc_> Where's your code?
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[12:43] <Gmaker> Hey guys. I'm getting an error when compiling a code on arduino. I know this is out of context but it says "error: request for member 'begin' in '2', which is of non-class type 'int'". I don't get how to redefine the variable
[12:43] <jgrahamc_> Post your code somewhere
[12:46] <Gmaker> http://arduino.cc/forum/index.php/topic,53015.0.html
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[12:49] <jgrahamc_> Well, you GPS_PIN_1 is just the number 2 and you are trying to do GPS_PIN_1.begin(X) which is the same as 2.begin(X). That's not going to work. What are you trying to do? Is this all your own code or based on something else?
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[13:01] <GroupO> sorry d/c
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[13:09] <jgrahamc_> Well, you GPS_PIN_1 is just the number 2 and you are trying to do GPS_PIN_1.begin(X) which is the same as 2.begin(X). That's not going to work. What are you trying to do? Is this all your own code or based on something else?
[13:10] <jgrahamc_> It looks to me like you are trying to use two Arduino I/O pins as a serial port. That's certainly possible. Are you using NewSoftSerial?
[13:12] <jgrahamc_> I see you've posted more code. You shouldn't be doing GPS_PIN_1.begin(GPSRATE), you need to be setting up NewSoftSerial.
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[13:15] <Group_O> sorry, d/c again. Stupid router
[13:15] <jgrahamc_> What was the last reply from me that you read?
[13:15] <Group_O> I dont know what u mean about the NewSoftSerial lib...
[13:15] <Group_O> about the lib
[13:16] <jgrahamc_> It sounds like you are basing this on someone else's code. You have included NewSoftSerial in the code you posted on the forum.
[13:16] <Group_O> yes,
[13:17] <jgrahamc_> It might be easier to hack this from the original code. Is it on the net somewhere?
[13:17] <Group_O> the code were passed has all the properties we need for the launch, and had aparently run un the past
[13:17] <Group_O> but as u can tell im having issues
[13:18] <Group_O> not that I know of. I was passed a copy from a guy who had spoken to the team who used it
[13:18] <jgrahamc_> OK. Can you post the original code you received? Say in http://pastebin.com/ and give me the URL?
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[13:22] <Group_O_> http://pastebin.com/a58FVnEQ
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[13:22] <Group_O_> thats what I was given
[13:23] <Group_O_> as far as i know it worked on another system...
[13:25] <jgrahamc_> OK. That's Terry Baume's code (he of Project Horus) by the looks of things. He's on here sometimes.
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[13:27] <Group_O_> yeh, I thought it was the horus project
[13:27] <Group_O_> I think he was in contact with a guy in my Uni, he gave me the code
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[13:36] <jgrahamc_> That code looks a bit confusing. For example, I see GPS. being used but not defined. I'm guessing there's something else going on here. Do you have the header files as well? He may have modified them.
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[13:37] <GroupO> is that the ".h" files?
[13:38] <jgrahamc_> Yes.
[13:38] <jgrahamc_> Did this person also give you the .h files?
[13:38] <GroupO> sorry, no. I dl them from the arduino site
[13:38] <Laurenceb> i like the ram check code
[13:38] <Laurenceb> useful
[13:39] <Laurenceb> polygon check too, nice
[13:39] <jgrahamc_> Anyone know if Terry has a source code repository for Project Horus/
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[13:40] <GroupO> it seems indepth and well commented but I just dont understand the functions
[13:40] <GroupO> From what i Have heard, i think he did but may have removed it
[13:43] <jgrahamc_> I bet you get other errors when you try to compile this, right?
[13:43] <GroupO> yes, loads, tbh
[13:43] <jgrahamc_> Right. Stuff like sensors not being defined, also GPS, etc.
[13:44] <GroupO> yes
[13:44] <GroupO> will that be an issue with the code, or the .h files that you were talking about?
[13:45] <jgrahamc_> It's pretty clear that this code is not complete. There's either a piece missing where various defines are made, or this is a work in progress, or there's stuff in the .h files.
[13:45] <jgrahamc_> You can see reading it that there are lots of things that are not defined.
[13:45] <jgrahamc_> Where are you with your project?
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[13:49] <GRoupO_> man...my internet is not playing fair today
[13:51] <Dooberry> ditto - my Spotify is mad slow today
[13:51] <Dooberry> although I suspect that's more of a problem with Spotify than my internet connection
[13:52] <GRoupO_> yeh, well I keep getting disconnected
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[13:52] <GRoupO_> have to reset my router everytime, should look to see what the issue is, but i CBA
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[14:15] <GroupO> jgrahamc sorry, some serious internet issues today
[14:16] <jgrahamc> No worries. Where were we?
[14:16] <jgrahamc> Have you built your hardware yet?
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[14:19] <GW8RAK> Can anyone remember the name of the Picaxe based balloon which IIRC was launched in N. Ireland? fsphil isn't online, so can't ask him.
[14:19] <fsphil> sorta here, and nope I don't remember that one
[14:20] <eroomde> jgrahamc: did you get my message from zeusbot?
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[14:20] <jgrahamc> Project Cirrus?
[14:20] <GW8RAK> Hi fsphil. Can't remember if it was Ireland or not.
[14:20] <jgrahamc> eroomde: Yes, I did. Was about to reply to you.
[14:21] <jgrahamc> Thanks for updating the predictor. Henry Hurst is a family friend (which I why I was asking.
[14:21] <eroomde> ah fine
[14:21] <GroupO> jg - i havent put the hardware together yet, but have had some guidance on the required pins and how it should go together,
[14:21] <eroomde> I'm not sure I ever met him personally beyond drinky things
[14:22] <jgrahamc> eroomde: very good guy.
[14:22] <jgrahamc> GroupO: if you are planning on using Arduino + Radiometrix NTX2 + Lassen IQ then you could always follow my project and use my code.
[14:23] <eroomde> jgrahamc: I've just done a reckless thing which is to manually run the cron-job script to start the new hourly pred scenario straight away. It usually brings the entire server down, for a reason I've yet to fathom
[14:23] <GW8RAK> It wasn't Project Cirrus. The one I'm thinking of, had an uplink as well as a downlink.
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[14:23] <GroupO_> got a technician in my uni to solder some wires to the GPS and got a breadboard for testing
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[14:24] <eroomde> GW8RAK: yes, i remember that one
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[14:24] <eroomde> he was called jonathan and he borrowed our 790R from us
[14:24] <NigeyS> meh afternoon peeps
[14:24] <eroomde> hang on let me dig up the emails
[14:24] <NigeyS> morning Dan-K2VOL !
[14:24] <GW8RAK> Just found it, Apex was the balloon name.
[14:25] <Dan-K2VOL> morning
[14:25] <jgrahamc> Didn't Apex launch from Churchill?
[14:25] <Upu> afternoon
[14:25] <eroomde> apex 2 did
[14:25] <eroomde> apex is jonsowman
[14:25] <NigeyS> hey upu!
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[14:26] <Upu> I have some code as well
[14:26] <eroomde> morning Dan-K2VOL - what's the latest?
[14:26] <jonsowman> hello all
[14:26] <GW8RAK> May well have done. My memory isn't what it was.
[14:26] <jgrahamc> Thought so.
[14:26] <jonsowman> & eroomde
[14:26] <NigeyS> crikey everyones awake, afternoon jonsowman
[14:26] <Upu> for NTX2 + Arduino + Inventek ISM but it's NMEA data
[14:26] <jonsowman> hi NigeyS
[14:26] <jgrahamc> GroupO: if you are planning on using Arduino + Radiometrix NTX2 + Lassen IQ then you could always follow my project and use my code.
[14:27] <NigeyS> jonsowman, ATS1 is mainly complete now :D
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[14:27] <jonsowman> good to hear!
[14:27] <NigeyS> got the last bits of code finished early AM, waiting for balloon and chute from Steve
[14:27] <GroupO_> I would be extremely grateful
[14:27] <jgrahamc> NigeyS: nice
[14:27] <jgrahamc> Launch when?
[14:28] <GroupO_> time is drawing in and its arduous learning this
[14:28] <NigeyS> soon as the notam comes through, hopefully end of march, more likely beginning of april
[14:28] <Upu> I'm still waiting on some plumbing for the foller
[14:28] <Upu> filler even
[14:29] <NigeyS> ah upu you reminded me, i need to get some pvc pipe for the filler to
[14:29] <jgrahamc> GroupO_: you'll find all my code here: https://github.com/jgrahamc/gaga/tree/master/gaga-1/flight/gaga1 and details on my blog at http://blog.jgc.org/search/label/gaga
[14:30] <jgrahamc> But one caveat: this is the first time I've done this so I'm by no means an expert. Ask here if you need expert advice.
[14:30] <GroupO_> OK, thanks very much.
[14:31] <NigeyS> i'll put the ATS code online later to, thats arduino + lassen + ntx2 aswell
[14:31] <GroupO_> I have managed to wrangle in a friend who is a computer programmer, means he can go through it with me and I can get a better understading
[14:31] <GroupO_> however, the guy isnt in uni anymore and I'm not paying him :) so his time is "limited"
[14:32] <jgrahamc> NigeyS: thanks for sharing. Always like to read other people's code.
[14:32] <Hibby> GroupO_: check your emails
[14:32] <eroomde> jgrahamc: http://www.srcf.ucam.org/~cuspaceflight/hourly-predictions/
[14:32] <eroomde> tis updated
[14:32] <eroomde> not particularly promising!
[14:32] <NigeyS> no probs, in fact jgrahamc you'll recognise the rtty code :)
[14:33] <jgrahamc> eroomde: thanks. Won't be launching this week :-)
[14:33] <GroupO_> i have, sent a reply. I assume that this is dave
[14:33] <Hibby> aye
[14:33] <GroupO_> lol
[14:33] <Hibby> surprised the blackberry didn't buzz
[14:33] <GroupO_> excellent...you have been witness to my epic emotional breakdown
[14:34] <Hibby> hahah
[14:34] <Hibby> nah, I got bored this weekend and started writing a new one from scratch
[14:34] <jgrahamc> NigeyS: gulp. Hope it works :-)
[14:34] <Hibby> will be on github soon...
[14:35] <GroupO_> ok, kl. I have been away this weekend, so I never got a chance to look over this stuff...not that it would make much of a difference
[14:35] <GroupO_> do u hvae ur own page on github?
[14:35] <NigeyS> jgrahamc, been working a treat, slightly modified it, but all is fine :)
[14:36] <jgrahamc> Jolly good.
[14:36] <jgrahamc> Only been tested in my basement, but at least it does transmit and get decoded correctly.
[14:37] <NigeyS> ill be putting mine in the fridge as soon as the new payload box arrives, that'll help find any kinks!
[14:37] <jonsowman> how're things eroomde?
[14:37] <jgrahamc> I did that early on, but I need to do it before the final launch to see how things survive. Next weekend I'm testing the RTTY over a three mile line of sight with the help of my parents.
[14:38] <eroomde> jonsowman: good
[14:38] <eroomde> work is fun
[14:38] <eroomde> you've presumably finished the idp now?
[14:38] <jonsowman> indeed
[14:38] <jonsowman> thank god
[14:38] <jonsowman> final report on weds though
[14:38] <jonsowman> urgh
[14:38] <NigeyS> eroomde, was it your birthday recently ?
[14:38] <eroomde> jgrahamc: there's also a lot to be said for throwing it down some stairs to see if it survives
[14:38] <eroomde> NigeyS: yep, on firday
[14:38] <eroomde> jonsowman: how did it go
[14:38] <eroomde> ?
[14:39] <NigeyS> dam, i missed you then, happy birthday (belated) !
[14:39] <eroomde> ta!
[14:39] <jonsowman> not fantastically
[14:39] <jonsowman> but not awful
[14:39] <eroomde> i was driving lausanna -> cambridge on my birthday, so basically did nothing
[14:39] <Hibby> GroupO_: I do, aye
[14:39] <eroomde> except sleep
[14:39] <jonsowman> just glad of standard credit and the fact it's over really
[14:39] <NigeyS> crikey
[14:39] <eroomde> jonsowman: I think that's par for the course
[14:39] <x-f> speaking of payload boxes - if mine was at +20 degrees, i put it outside (-17 degrees) and after 2.5 hours it's internal temperature was down to 0 degrees, that's acceptable?
[14:39] <jonsowman> back to "normal" labs
[14:39] <jonsowman> eroomde: I hoped so
[14:39] <eroomde> x-f: sounds fine
[14:40] <Hibby> GroupO_: https://github.com/Hibby/Strathclyde-HAB-Project
[14:40] <NigeyS> x-f, gets alot colder at 100,000ft :D
[14:40] <x-f> eroomde, great
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[14:40] <x-f> NigeyS, yes, i know, but it won't be up there for so long
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[14:42] <eroomde> and the air is thinner so less heat transfer
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[14:45] <Upu> x-f I ran mine over night at -8 and the internal temp stayed just above zero
[14:46] <Dan-K2VOL> x-f unless you're flying at night, you will get an enormous amount of heat from the sun
[14:46] <Dan-K2VOL> if you're worried, paint it black
[14:46] <Dan-K2VOL> you'll cook in there
[14:47] <x-f> i'd like to paint it in color similar to jgrahamc's box :)
[14:47] <x-f> ok, i'm calm now, thanks everybody
[14:48] <NigeyS> hehe
[14:48] <eroomde> i'm of the school that paints everything bright orange
[14:48] <eroomde> it tends to show up against most of england it could land on
[14:48] <NigeyS> im doing mine orange
[14:48] <NigeyS> upu recommended some cool gaffa tape!
[14:49] <eroomde> oh, link?
[14:49] <NigeyS> let me grab it ..
[14:49] <NigeyS> http://www.gaffatape.com/Photoluminescent-Glow-Tape/default.aspx
[14:49] <x-f> Upu, i read your blog, you have a very nicely designed payload box
[14:49] <NigeyS> not cheap mind, they charge £6 delivery even for 1 roll !
[14:49] <Upu> thanks :)
[14:50] <Upu> http://www.gaffatape.com/
[14:50] <NigeyS> AvA does look sweet
[14:50] <Upu> its ready to fly , Rob Harrison managed to pick it up on Sunday , 10 miles range from inside :)
[14:51] <NigeyS> do you both live on a mini mount everest? :o
[14:51] <Upu> pretty close yes :)
[14:51] <Upu> still a few houses in the way but then a 10 mile glacial valley between us :)
[14:51] <NigeyS> lol, 10 miles from the ntx2 from inside .. thats pretty impressive
[14:52] <Upu> yeah Rob was quite impressed
[14:52] <NigeyS> i like the antenna you made
[14:52] <fsphil> I don't get as much range, but it's still neat knowing the signal is detectable from anywhere in the town
[14:52] <Hibby> Group_O: remind me of the GPS you bought?
[14:52] <NigeyS> hey phil!
[14:52] <Group_O> Falcom FSA-03
[14:52] <eroomde> Upu: where's your blog?
[14:52] <Upu> its just made from an N-Type panel connector some old TV Coax inner core and a SMA to N-Type convertor
[14:53] <Upu> http://ava.upuaut.net
[14:53] <Hibby> thought so.
[14:53] <Group_O> how do u ping people in this? is it just thier name followed by ":"?
[14:53] <NigeyS> just say their name
[14:54] <Hibby> varies from client to client, but generally yes. I start typing a name, hit tab and it completes it as well as adding the :
[14:54] <Upu> I need to update my blog I've got an external camera on a boom now
[14:54] <Group_O> kool
[14:55] <Upu> if it works the shots should be incredible
[14:55] <Upu> Timobel to blame for that one
[14:55] <NigeyS> it'll work, have faith! :P
[14:55] <fsphil> hiya NigeyS
[14:55] <Upu> its a little AEE MD91 spycam so I'm powering it from inside the payload container, but it looks back on the payload
[14:55] <Upu> can't wait :)
[14:56] <NigeyS> hmm ive got a little dvr camera that i bought for my bike, only 9 quid on ebay, im toying with sending that up, what do you think ?
[14:56] <x-f> Upu, will you be aiming it to the ground or the balloon?
[14:57] <Upu> back at the payload
[14:57] <Upu> there is a A560 in there too to take nice stills but I want to see the payload in the enviroment I'm sending it
[14:57] <Upu> I honestly think this pink thing hanging at the edge of space will look amazing
[14:58] <NigeyS> haha it'll certainly stand out!
[14:58] <Upu> also no ones seen what the payload looks like from the outside when the balloon bursts
[14:58] <fsphil> A very odd borg cube
[14:58] <Upu> https://picasaweb.google.com/upuaut/201012AvaFinalBuild#
[14:58] <Upu> some more payload pics there
[14:59] <Upu> and http://www.youtube.com/watch?v=lXlyBK4N7t4
[14:59] <Upu> is the view it gets
[14:59] <jgrahamc> Nice Upu
[14:59] <jgrahamc> My project is fluorescent yellow: http://blog.jgc.org/2010/09/gaga-1-capsule-paint-job.html
[14:59] <NigeyS> upu, have you glued / tied the string on the inside of the box or just held it with tape? cant quite tell
[15:00] <eroomde> yes very impressive!
[15:00] <eroomde> that'll be a great video
[15:00] <eroomde> do you have a mascot?
[15:00] <eroomde> ideally fur
[15:00] <NigeyS> jgrahamc, i tried to find the pain you used, but they seem only to sell 50ml bottles ?
[15:00] <NigeyS> paint*
[15:00] <eroomde> seems to make people loose objectivity if the mascot has fur in some small way
[15:00] <Upu> https://picasaweb.google.com/upuaut/201012AvaFinalBuild#5556867450622911474 NigeyS put the cord round the box and held in place with gaffer
[15:01] <NigeyS> ahh i see, was wondering how to do it, cheers :D
[15:01] <fsphil> gaffer tape here too
[15:01] <Upu> jgrahamc oh that's yours ! its great
[15:01] <Upu> I like your antenna with balls on it :)
[15:01] <NigeyS> lol
[15:02] <jgrahamc> NigeyS: I'm not sure you large that pot is (small than a Coke can), but probably is 50ml. I used about half the pot with multiple coats.
[15:02] <jgrahamc> Upu: don't want to poke someone's eye out! Also, made the kids happy painting and gluing those on.
[15:02] <NigeyS> oh, thought it wouldve taken quite a bit
[15:03] <Upu> I also like the way your antenna is fixed i'm blatantly copying that idea for Ava2
[15:03] <Upu> I don't like things that move about
[15:03] <Upu> if it moves it will break
[15:03] <fsphil> Ain't that the truth :(
[15:04] <Laurenceb> what is the pink stuff?
[15:04] <Upu> eroomde as for a mascot I think a big pink box at the edge of space will do :)
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[15:04] <NigeyS> im avoiding antenna work for a few more days, put the scissors through my fingers stripping cable last night :/
[15:04] <Laurenceb> its really neatly done
[15:04] <jgrahamc> Well, I'm pretty sure that mine is going to break when it hits the ground. The vertical is actually quite flexible because it's connected to the coax centre and then covered in heat shrink where it connects.
[15:05] <jgrahamc> NigeyS: cable strippers. Buy them once, your fingers will thank you forever.
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[15:05] <Upu> I keep bending mine be lucky if it gets to the launch site to be honest
[15:05] <eroomde> NigeyS: or use silicon cable
[15:05] <eroomde> it's much much better
[15:05] <eroomde> and can strip with a thumbnail
[15:05] <NigeyS> lol i do have some, but housemate has no doubt borrowed them and hidden there somewhere, so i thought the fiance's craft scissors would be ok .. kinda sharp :(
[15:05] <eroomde> i can't go back now
[15:05] <jgrahamc> eroomde: there is a mascot. A tiny Paddington bear wearing a 'space suit' that my mother made (have to keep the kids and parents entertained).
[15:05] <eroomde> nice :)
[15:06] <NigeyS> oh silicon cable .. that might be worth looking into!
[15:06] <eroomde> NigeyS: it really is so much better
[15:06] <NigeyS> anything that saves my fingers!
[15:06] <Upu> I wouldn't mind a shot at the alititude record and I might have blow that getting giddy with external cameras so I'm not adding to the issue with a teddy bear
[15:06] <Upu> blown even
[15:06] <eroomde> the insulation is much more flexible and also heat resistant, so when you solder insulated wire to things, you don't melt the first couple of mm of insulation
[15:06] <NigeyS> jgrahamc, dont forget to wrap the little fella in a foil blanket, it'll get cold! :P
[15:06] <eroomde> which makes much cleaner cable assemblies
[15:07] <NigeyS> ah yes, noticed that when soldering, i'll look into it!
[15:07] <eroomde> we use it on the airship exclusively
[15:08] <eroomde> super stuff
[15:09] <NigeyS> how is the airship work going ?
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[15:10] <eroomde> precisely right now, there a electricians in my office putting in a bunch of plugs and low voltage terminals on my workbench
[15:10] <eroomde> so i am on irc and reading something on reddit :o|
[15:10] <eroomde> but in a general sense, it's going well
[15:11] <NigeyS> oo, it's still work though :p
[15:11] <eroomde> NigeyS: have you seen the video of us messing around with the airship on thursday?
[15:11] <NigeyS> no? not yet, do you have the link ?
[15:11] <eroomde> I'm flying our one, which is the one being chased http://www.youtube.com/watch?v=lY54VUsLwsY
[15:12] <Dooberry> hmm, using a gopro camera?
[15:12] <eroomde> natch
[15:12] <Dooberry> have any of those been used on a high alt balloon trip yet? I've been looking into using a HD Hero, but the battery life is only 2.5hrs
[15:13] <eroomde> i think various people have flown them
[15:13] <Dooberry> presumably with USB battery backups...
[15:13] <eroomde> but not us - we've not really flown any pretty picture missions for a couple of years now
[15:13] <eroomde> but they do look cute
[15:14] <Upu> Dooberry if my experiment with the cheap camera works I may go for a GoPro HD
[15:14] <Dooberry> they look awesome as hell, although i'd hate to lose one on a lost payload
[15:14] <Upu> but its alot of money to loose
[15:14] <jgrahamc_> I looked into various video camera options and then looked at my bank account :-)
[15:14] <Upu> haha yup jgrahamc_ :)
[15:14] <Dooberry> haha, indeed Upu
[15:14] <eroomde> NigeyS: this vif gives you s sense of scale of these airships. this one is about 1/3rd longer than our one, so a bit bigger but of a representative order http://www.youtube.com/user/minizepp#p/u/13/GcIjNE6TnDM
[15:14] <Upu> the AEE MD91S is £50 from T'Bay
[15:14] <NigeyS> eroomde, that was great! what are they like to control ?
[15:15] <Upu> I like those blimps :)
[15:15] <jgrahamc_> Upu: true that it's only £50 but it's also another 50g. Perhaps on flight #2
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[15:15] <NigeyS> they do look kinda huge, i want your job! lol
[15:15] <eroomde> NigeyS: not bad actually
[15:16] <eroomde> you have plenty of thinking time
[15:16] <Upu> Dooberry the onboard battery lasts about an hour and half in a warm room so I've run a USB lead into the payload container with 4 x AAA's and 2 rectifier diodes in series to bring the voltage down to 5V
[15:16] <Upu> yes it does add weight
[15:16] <NigeyS> true i guess, are they / will they be autonimous though? :p
[15:16] <eroomde> if it all goes wrong just apply maximum throttle (that vid was filed at about a quarter throttle) and put elevators to maximum
[15:16] <eroomde> and you've bought yourself some time
[15:16] <eroomde> NigeyS: it will eventually be autonimous
[15:17] <eroomde> i am coding that right now
[15:17] <NigeyS> :o
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[15:18] <NigeyS> amazing stuff eroomde
[15:18] <Upu> love those blimps
[15:18] <eroomde> they're fun
[15:18] <NigeyS> i wantt 1 ! i want to blimp race!
[15:18] <NigeyS> morning Zuph
[15:18] <eroomde> as someone who threw a lot of the last two years at control theory, they're a little more gratifying to work on than balloons
[15:18] <Upu> much bigger than I was expecting
[15:19] <eroomde> NigeyS: our one can hit 70km/h at full throttle
[15:19] <eroomde> it really flies!
[15:19] <NigeyS> 70 :o thats alot faster than i thought
[15:19] <eroomde> yeah
[15:19] <eroomde> it really does shift
[15:19] <eroomde> and can turn really tightly too at that airspeed
[15:19] <eroomde> on a dime
[15:19] <eroomde> there's also a fan built into the rudder to help with low-speed turning
[15:20] <eroomde> very useful for landing the thing, which you do vertically
[15:20] <NigeyS> now see, that's something i wouldnt fancy doing.. landing a blimp!
[15:20] <eroomde> well, which you're *meant* to do vertically, though there are other slightly less good ways
[15:21] <NigeyS> im trying to picure a vertical landing
[15:21] <eroomde> so the fan can let you keep it pointed into the wind as you decend on zero throttle (tis negaitvely bouyant, deliberately). Then just before landing you vector your thrusters to vertical and decelerate the descent
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[15:23] <Zuph> Morning, #ha
[15:23] <Zuph> What sort of amazing stuff is eroomde up to today? :-p
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[15:23] <NigeyS> hes been racing blimps Zuph ! lol
[15:23] <Zuph> morning again, #ha, university wireless is the worst.
[15:24] <fsphil> bad internet seems to be a theme today
[15:24] <NigeyS> ya sems to be alot of time outs etc today
[15:24] <fsphil> someone needs to clean the tubes
[15:24] <eroomde> Zuph: unfortunatley didn't video any of my landing attempts - it takes some concentration and judgement and I got it wrong the first few times
[15:25] <Zuph> I'm sure we can somehow blame Robert Stephens on this.
[15:25] <eroomde> had to slam the throttle onto full vertical when it went pear-shaped and come round for another attempt
[15:25] <NigeyS> :o
[15:25] <Zuph> eroomde: What size blimps?
[15:25] <NigeyS> L plates for eroomde :D
[15:25] <eroomde> 9m is the one we brought back
[15:25] <eroomde> about 20kg all-up mass
[15:26] <Zuph> Wow. Neat.
[15:26] <NigeyS> what size are the fans ?
[15:26] <eroomde> Zuph: this was what i just posted - filmed on thurs when we drove over to the man in switzerland who makes these to pick it up and have a test flight - http://www.youtube.com/watch?v=lY54VUsLwsY
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[15:27] <eroomde> i'm flying the one being chased by the one with the camera
[15:27] <eroomde> and one of their guys, who is a much better flier, is chasing me
[15:28] <eroomde> NigeyS: the props are about 40cm dia
[15:28] <Zuph> hah, that looks like a whole lot of fun.
[15:28] <eroomde> the prop to prop width of the control pod is about my air span
[15:28] <eroomde> so it only just managed to fit in the boot of my car
[15:28] <eroomde> arm span*
[15:29] <NigeyS> couldve flown it home !
[15:29] <Zuph> eroomde: You guys design the electronics package?
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[15:30] <eroomde> Zuph: yep, so my project currently (apart from being on irc right now) is getting it under autopilot control
[15:30] <NigeyS> how do you even begin to approach that?
[15:30] <eroomde> and then it's being used in a project to build 3D temperature maps in the alps
[15:31] <eroomde> so it's using computer vision to do reconstruction on what its looking at, then using a thermal camera to overlay temp data onto the 3d map
[15:31] <eroomde> so the other 3 post-docs on the project are computer vision guys
[15:32] <eroomde> it's flying a fairly meaty core 2 duo PC104 board and a couple of firewire cameras, and the cpu is fairly pegged doing the vision stuff
[15:32] <eroomde> NigeyS: keeping it simple! PID control almost always works, PhD control often doesn't
[15:32] <Zuph> Wow, what sort of battery capacity are you flying on that thing?
[15:32] <NigeyS> mind boggling stuff
[15:33] <eroomde> so inisitally at least it'll do basical waypoint to waypoint with PID control.
[15:33] <eroomde> Zuph: big big LiPo bricks
[15:33] <eroomde> the motors pull about 80A at full power, so they have big packs too
[15:33] <Zuph> How much linger time do you get?
[15:33] <eroomde> though that video was never more than about 25% power
[15:33] <eroomde> hmm, 30 mins?
[15:34] <eroomde> 10 mins of good data is enough for the computer vision stuff
[15:34] <griffonbot> Received email: pha07lmw <lawrence04041989@hotmail.com> "[UKHAS] High altitude wind forecast"
[15:34] <eroomde> Zuph: on full power she'll do 70km/h. Quite hairy to control though!
[15:35] <Zuph> I bet!
[15:35] <Zuph> Okay, so you're not mapping huge swaths of the alps :-p
[15:35] <eroomde> this is just a proof of concept
[15:35] <eroomde> the aim is to publish papers, as usual :)
[15:36] <eroomde> rather than any higher engineering aim
[15:36] <eroomde> but payload capacity and so endurance grow as the cube of linear dimension, so developing the idea to something more workable is outlandishly difficult
[15:37] <eroomde> isn't*
[15:38] <Zuph> Ah ha :-p
[15:38] <Zuph> So, if you don't mind me asking, how much does a 9m blimp cost?
[15:39] <eroomde> not at all! it's not my money, just a funded project. The canopy and propulsion would be about $15k USD
[15:39] <eroomde> so not actually outlandishly expensive
[15:39] <eroomde> the thermal camera we use costs about the same again, a bit more infact
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[15:40] <eroomde> it's calibrated, which like all calibrated things means adding a significant integer multiplier to the base price
[15:42] <eroomde> Zuph: to give you an idea of scale, this air ship is a big bigger than ours (about 30% longer) http://www.youtube.com/watch?v=GcIjNE6TnDM
[15:42] <Zuph> Yeah
[15:43] <Zuph> Well, there go my dreams of owning a 9m airship then :-p
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[15:43] <eroomde> Zuph: lol, I think you might be able to build one from scratch for significantly less
[15:44] <eroomde> but it would take a few iterations before you got something reliable and easy to deploy
[15:44] <Zuph> hah
[15:44] <GroupO> Hibby: have u spoken to dr mac yet?
[15:44] <Zuph> yeah. What material do they use for the envelope?
[15:44] <eroomde> they use an inner liner made from PE and an outer skin made from rip-stop nylon
[15:45] <eroomde> all the fixings and loops and so on are onto the outer nylon skin
[15:45] <eroomde> the inner liner is comprised of a main liner and a ballonet
[15:46] <eroomde> i'd be keen to make some kind of open source blimp actually
[15:47] <eroomde> but i'm not sure what the community uptake would be :)
[15:47] <eroomde> it's definitely a tool rather than a toy
[15:49] <jonsowman> [M E-[M#E-
[15:49] <jonsowman> urgh, sorry
[15:50] <Hibby> GroupO: not yet, will fire off an email now
[15:51] <GroupO> Hibby: kl, im only asking cos I hav ea friend coming up to mine tonite to have a look at this with me, but if I can piggy back of urs then it might be wise to wait till later for him (if it is even required)
[15:52] <Zuph> eroomde: Well, I'm sure there are a lot of neat things to be done with such a toy.
[15:52] <Zuph> :-p
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[15:54] <eroomde> Zuph: not argueing with you there!
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[15:54] <eroomde> I want to use it after this project if I hang around at cambridge
[15:54] <eroomde> there's some really cool stuff it lends itself to in control theory research
[15:54] <griffonbot> Received email: Adam Greig <random@randomskk.net> "Re: [UKHAS] High altitude wind forecast"
[15:55] <Zuph> Absolutely, I can only imagine.
[15:55] <Zuph> The most advanced control theory work being done here involves inverted pendulums :-P
[15:55] <eroomde> especially machine learning and control theory, so seeing if it can figure out whether to use the rudder laterla fan or the rudder to minimise some cost (like battery consumption) and if it can work out it's all to do with your airspeed and so on
[15:55] <eroomde> as a random example ^
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[15:56] <Zuph> The lab I'm working in right now has done some similar machine learning/fuzzy control work in the distant past.
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[15:56] <eroomde> and if it could re-learn on the fly to start using the fan if the rudder control surface were to fail
[15:56] <rjharrison_> Hi all
[15:56] <eroomde> ah cool!
[15:56] <rjharrison_> eroomde perfect
[15:56] <Zuph> eroomde: Now that would be really impressive.
[15:56] <rjharrison_> I'm think about moing to arm any recommendations ?
[15:57] <eroomde> yeah. this is what I am trying to engineer a PhD in
[15:57] <Randomskk> stm32 all the way
[15:57] <eroomde> machine learning approaches to fault tolerant control
[15:57] <rjharrison_> Randomskk cool
[15:57] <eroomde> rjharrison_: yeah stm32 have taken over from the lpc2368 stuff we used on badger 2
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[15:57] <eroomde> newer tech, cheaper too
[15:57] <Randomskk> they're so cheap
[15:57] <rjharrison_> linux dev supported
[15:57] <Randomskk> yea
[15:57] <rjharrison_> I assume so
[15:58] <rjharrison_> Cheers
[15:58] <rjharrison_> eroomde as is the way with life
[15:58] <eroomde> what do you have in mind for all this new cpu power?
[15:58] <Randomskk> you can get a 24MHz 48 pin STM32 with shedloads of flash, ram, loads of fast good peripherals, usb, 16 timers etc etc for less than the cheapest atmega on farnell
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[15:58] <rjharrison_> Randomskk cool... Where?
[15:58] <rjharrison_> Farnel
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[15:59] <jcoxon> Afternoon
[15:59] <Randomskk> hi jcoxon
[16:00] <rjharrison_> hi jcoxon
[16:00] <jcoxon> No trans a launches then?
[16:00] <rjharrison_> Randomskk wow that is cheep 2 quid
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[16:00] <Zuph> eroomde, Randomskk: Actually, I've been looking in the same direction, post white star. Any recommendations on debugger/toolchains?
[16:00] <jcoxon> Got some WiFi in Vienna
[16:00] <Randomskk> I use gdb and gcc
[16:00] <Randomskk> and vim, make etc as far as 'toolchains' go
[16:00] <rjharrison_> is there a groovy programmer?
[16:01] <Randomskk> they come with serial bootloaders
[16:01] <Randomskk> but are otherwise programmed over JTAG
[16:01] <rjharrison_> It just gets better
[16:01] <Zuph> jcoxon: Heh, we are working our asses off. Just this weekend able to test the entire telemetry string.
[16:01] <jcoxon> :)
[16:01] <Randomskk> so any jtag dongle will basically work, such as with openocd
[16:01] <jcoxon> Might be back in time then
[16:02] <Randomskk> I use olimex's usb-jtag-tiny or something, it's small and works
[16:02] <Randomskk> a jtag dongle is required for debugging.
[16:02] <Zuph> Actually, for any curious bystanders, here is a very summarized version of our telemetry path: http://wiki.whitestarballoon.com/doku.php?id=missionoperations:dataprocessing
[16:02] <NigeyS> Hi jcoxon, enjoying the holiday ?
[16:02] <Randomskk> look into this:
[16:02] <Randomskk> http://uk.farnell.com/stmicroelectronics/stm32vldiscovery/board-eval-stm32vl-discovery/dp/1824325
[16:02] <jcoxon> Yup though its very cold
[16:02] <Randomskk> it's £9 (!!!) and has an STM32, everything needed to program one via USB directly, on a full breakout
[16:02] <NigeyS> not much better here, wind..rain.. :(
[16:03] <Zuph> 19 degrees here. Supposed to be 2 by tonight, though.
[16:03] <jcoxon> -4 here
[16:03] <Randomskk> http://uk.farnell.com/stmicroelectronics/st-link/programmer-icd-for-stm8-stm32/dp/1779159 is a cheapish programmer for them too
[16:03] <Zuph> :(
[16:04] <eroomde> rjharrison_: what do you have in mind?
[16:04] <eroomde> and i 2nd the reocmmendation of the olimex jtag usb thingamie
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[16:04] <Zuph> jcoxon: Where to after Vienna?
[16:04] <jcoxon> Prague
[16:05] <eroomde> toolchains can be built for *nix (fine if you know what your doing) or you can download complete blobs like YAGARTO for windows
[16:06] <Randomskk> super easy toolchain on linux: https://github.com/esden/summon-arm-toolchain
[16:06] <Randomskk> by super easy I mean super, super easy
[16:07] <Randomskk> you just run the script and it'l download and build everything required including the ST libraries and libopenstm32 if you want it
[16:07] <Randomskk> also valid for mac aiui
[16:07] <Zuph> jcoxon: May you find some warmer weather along the way somewhere.
[16:08] <jcoxon> Hehe, its fine, coat is holding up well
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[16:09] <rjharrison_> Randomskk
[16:09] <rjharrison_> thanks for that
[16:10] <jcoxon> Did wb8elks tx test work?
[16:10] <rjharrison_> I'll get one of those and have a play
[16:10] <Randomskk> np. I don't personally have an stm32 discovery as I made my own dev boards before those came out, but they look excellent
[16:10] <Zuph> jcoxon: We couldn't pick him up in Louisville, but our antenna sucks.
[16:10] <Randomskk> stm32s are generally awesome
[16:10] <jcoxon> Anything hit spacenear.us?
[16:11] <fsphil> someone received something
[16:12] <jcoxon> Good good
[16:12] <fsphil> KD0FW, no location for him though
[16:13] <fsphil> he could have been in the building for all I know :)
[16:13] <Zuph> jcoxon: Looks like contacts as far as Kansas City on this past one. (~500/600 miles)
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[16:14] <rjharrison_> Randomskk did you knock up a dev b in Eagle if so are the files out there somewhere?
[16:14] <Randomskk> yes and yes
[16:14] <Randomskk> https://randomskk.net/projects/stm32_dev_board/
[16:16] <Randomskk> hmm
[16:16] <Randomskk> the dates on the brd and sch files make me suspicious
[16:16] <Randomskk> hang on
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[16:19] <Randomskk> https://randomskk.net/projects/stm32_dev_board/
[16:19] <Randomskk> okay
[16:20] <Randomskk> the _r3 ones are latest
[16:20] <Randomskk> note: no pullup on D+ USB line means it won't work unless you fix that
[16:20] <Randomskk> USB won't work, that is.
[16:20] <Randomskk> it uses the FTDI six pin layout for breaking out the serial bootloader
[16:21] <Randomskk> switches for power on/off and also boot mode (bootloader vs nromal)
[16:21] <Randomskk> has a 2 pin JSR connector for a lipo battery along with charging circuitry for that, mini USB, a load of power pins etc
[16:22] <Randomskk> reverse silk says pin name, front silk has primary function
[16:22] <Randomskk> and they're mostly arranged by function
[16:22] <rjharrison_> Randomskk cool
[16:23] <Randomskk> I think I have a few blank PCBs of that run around if you want me to post you a couple, but don't have any spare component kits
[16:24] <Randomskk> the stm32 discovery is probably cheaper (I imagine it's subsidised) and does mostly the same things though lacks the ftdi connector, lipo connector/charging etc
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[16:26] <rjharrison_> I'm going to grab the kit. I see you are only on the 48 pins rather than 64 I gess 48's enough io for anyone
[16:26] <Randomskk> depends on what you're doing I guess
[16:26] <Randomskk> I've used their 100 pin ones before, they are a bit annoying to solder but eh
[16:27] <rjharrison_> The eagle files were for when I want to make my own board it will help me remember the additinal components i need
[16:27] <Randomskk> only downside to stm32 is lack of low pin count parts: 48 is as low as they go iirc, maybe 32 in vqfn, but all in packages no easier than tqfp
[16:27] <Randomskk> no replacements for attiny2313 or 45s or such, and no good if you can't solder smd
[16:28] <rjharrison_> hehe i'm not that old yet
[16:28] <rjharrison_> do you run a rtos on there?
[16:28] <rjharrison_> Thinking uCLinux
[16:28] <Randomskk> personally I haven't though I looked into it for a bit, it was more effort than I needed
[16:28] <Randomskk> I hear FreeRTOS works well, uCLinux is probably not a bad option though there's very little RAM unless you connect more banks up
[16:29] <Randomskk> ChibiOS is another option I've heard used
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[16:29] <rjharrison_> perhaps thats a bit over board for what I want to do at the end of the day it's only a hab board
[16:30] <Randomskk> it's easy enough to just run bare metal
[16:30] <eroomde> uCLinux will almost certainly be too lardy for a stock stm32 in a microcontroller space
[16:30] <eroomde> by at least an order of magnitude
[16:30] <rjharrison_> hehe
[16:30] <Randomskk> indeed
[16:30] <eroomde> it's basically just linux but without needing memory management
[16:30] <Randomskk> the bare metal works perfectly well essentially
[16:30] <rjharrison_> ouch
[16:30] <Randomskk> there are some other hacks if you really want threading
[16:31] <rjharrison_> Do you do all that interrupt stuff like I have to do on the avr?
[16:31] <eroomde> well an rtos is really just a collection of techniques/hacks for concurrency used together
[16:31] <eroomde> rjharrison_: yes
[16:31] <eroomde> it'll be really very familiar to you
[16:31] <Randomskk> it has more interrupt channels available
[16:31] <Randomskk> and they are more configurable
[16:31] <Randomskk> basically everything is a lot more configurable
[16:31] <Randomskk> which is both good and bad
[16:32] <eroomde> it's like an avr but to do anything usually requires a bit more configuration as you have a few more options
[16:32] <Randomskk> indeed
[16:32] <rjharrison_> hehe Looks like I'm going to be busy then
[16:32] <rjharrison_> eroomde did you use an rtos on badger?
[16:32] <eroomde> eg you don;t just apply power an let it start from main(), you have to do some startup stuff
[16:33] <eroomde> and you don't just set a bit to be an input and read it, you usually have to spaff a couple of other registers
[16:33] <eroomde> rjharrison_: yes
[16:33] <eroomde> we did
[16:33] <eroomde> TNKernel
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[16:33] <rjharrison_> Was that to make your lives a bit easier?
[16:33] <eroomde> yup
[16:34] <rjharrison_> Is that a funkey way to go like FreeRTOS?
[16:34] <Randomskk> https://github.com/adamgreig/STM32_SkeletonProject and https://github.com/adamgreig/SelWX might both be useful to you, rjharrison_
[16:34] <eroomde> there's no point if you have a few simple and well defined tasks to do
[16:34] <rjharrison_> I'm looking for an easy life here :)
[16:34] <Randomskk> makefiles, linker scripts (you'll need one and come to hate them for a bit I suspect)
[16:34] <Randomskk> example code, interrupt handlers, etc
[16:35] <eroomde> rjharrison_: why do you want to make the switch? do you have a particular thing in mind that wont fit on an avr?
[16:35] <rjharrison_> I assume there is an arm site a bit like avr freaks
[16:35] <Randomskk> not really
[16:35] <Randomskk> the ST forums are quite good though
[16:36] <rjharrison_> I want to do a bit more data capture with gyros and see if i can detect burst. I probably have enough power in the avr for that
[16:36] <Upu> afternoon rjharrison_, I should be there on Wednesday
[16:36] <rjharrison_> Hi Upu cool
[16:36] <eroomde> ok cool
[16:36] <eroomde> though, i would have thought that acceleration would be much the better thing for burst detection?
[16:37] <rjharrison_> hehe I menat that
[16:37] <eroomde> ah right ok
[16:37] <rjharrison_> accerometer even
[16:37] <eroomde> well yeah, you could trivially do that on an avr. if you want to start having things like usb and fAT32 datalogging onto sd card and maybe some sensor fusion algorithms like a kalman filter, go for the arm stuff. definitely
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[16:38] <eroomde> but if you want an easy life i'd probably stick with a known architecture as long as possible
[16:38] <rjharrison_> I'll keep that in mind
[16:39] <rjharrison_> Perhaps a play with arm but keep the hab stuff on avr for a while
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[16:42] <Zuph> eroomde: As I'm learning the hard way with SB-1 :(
[16:42] <Hibby> anyone ever thought about trying a bifferboard for HAB stuff?
[16:42] <Zuph> This damn OpenLog is a pain in my ass.
[16:44] <eroomde> Zuph: yeah tell me about it
[16:44] <eroomde> like I often want to learn a new language and solve a problem with it, but if it's a research problem (i.e. unsolved) then i keep being limited by not properly understanding the language
[16:45] <eroomde> i have this problem right now with haskell, which is awesome, but i need to maybe just do some toy problems in it first
[16:45] <NigeyS> OpenLog is that bad? :|
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[16:45] <eroomde> i just have no motivation to do the toy problems
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[16:45] <Zuph> NigeyS: OpenLog is *great* if you want to write data from a microcontroller, and read it from a computer. Not great at all if you want to read from the uc as well.
[16:46] <NigeyS> ahh your reading it on the fly so to speak ?
[16:46] <Zuph> eroomde: I might be tasked to use an automatic proof generator written in haskell here soon :(
[16:46] <Zuph> NigeyS: Yep.
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[16:46] <NigeyS> yikes, that cant be any fun :(
[16:46] <eroomde> Zuph: good god! sounds above my head
[16:46] <Lunar_Lander> hello everybody
[16:47] <NigeyS> hey Lunar_Lander
[16:47] <Zuph> eroomde: Above my head.
[16:47] <Lunar_Lander> today I wrote to what is Ofcom here
[16:47] <Lunar_Lander> to ask if the NTX2 is really allowed in germany
[16:47] <Lunar_Lander> hope they'll answer soon
[16:47] <Zuph> eroomde: It proves that C code does what it should based on a set of predicates, plus a state diagram of the code in question.
[16:47] <Laurenceb> http://www.sparkfun.com/products/10221
[16:48] <Laurenceb> ^v useful for ballast
[16:48] <Zuph> Laurenceb: We talked to the etape people for White Star
[16:48] <Zuph> Laurenceb: won't work in the cold
[16:48] <fsphil> Lunar_Lander, I'm pretty sure they're allowed everywhere in the EU
[16:48] <Laurenceb> i see
[16:48] <Zuph> Laurenceb: it compresses a conductive film against a linear pot, basically, and the conductive film become brittle below 0c.
[16:49] <Lunar_Lander> that is good fsphil
[16:49] <Laurenceb> yeah - capacitive is probably the best bet
[16:49] <Laurenceb> i tried it but had issues with capillary effects
[16:49] <Laurenceb> bbl
[16:49] <Zuph> We're just calibrating our drip rate at 10-20 points in the column.
[16:50] <Lunar_Lander> btw while looking to ham stuff a bit
[16:50] <Lunar_Lander> I think I told you that we got two classes, the "full" one and the "novice"
[16:50] <Lunar_Lander> novice is limited to certain bands and 100 W
[16:50] <fsphil> that's quite generous
[16:50] <Lunar_Lander> but you can transmit in microwave actually
[16:50] <Lunar_Lander> from 10.0 to 10.5 GHz
[16:50] <fsphil> our foundation license is limited to 10W
[16:51] <fsphil> and no microwave frequencies
[16:51] <Lunar_Lander> yeah
[16:51] <Lunar_Lander> I think the microwave here is also limited to 10
[16:51] <Lunar_Lander> and the lower frequencies have the 100 W limit
[16:52] <fsphil> If I get my intermediate callsign I'm definitely going to play with the microwave stuff
[16:52] <Hibby> 100W "limit"
[16:52] <Randomskk> how?
[16:52] <Lunar_Lander> someone with a full license can have up to 750 W on certain bands
[16:52] <Hibby> :p
[16:52] <Zuph> 750W, phhht, nothing.
[16:52] <Lunar_Lander> 750 W PEP that is
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[16:52] Action: Hibby does regular cross atlantic voice on 5W :)
[16:53] <Zuph> Try 1500W for USA hams :-p
[16:53] <Lunar_Lander> yeah
[16:53] <Lunar_Lander> and 6 kg for balloon payloads
[16:53] <Lunar_Lander> :(
[16:53] <Hibby> equally, it's pretty easy, so I've heard, to get an NoV in the UK for up to 1500W
[16:53] <Lunar_Lander> ah
[16:53] <fsphil> is there much use for 1.5kW?
[16:54] <Hibby> winning the my power is bigger than yours game?
[16:54] <Zuph> fsphil: Killing small birds?
[16:54] <Lunar_Lander> like in Gears of War?
[16:54] <Zuph> fsphil: Disrupting all the FCC Part 15 devices in your neighborhood?
[16:54] <Lunar_Lander> where you fry the bats with the UV spot?
[16:54] <fsphil> haha
[16:55] <rjharrison_> Given 10mw can do a few hundered km I think we can stick to that
[16:55] <Zuph> fsphil: Earning the ire of anyone inside of 10 miles from your house?
[16:55] <eroomde> EME!
[16:55] <fsphil> oh how could I forget about EME
[16:55] <Lunar_Lander> yeah put up those signs "No People with Heart machines allowed here"
[16:55] <Lunar_Lander> you know
[16:55] <russss> 18:35 GMT on Saturday is an ISS pass over Europe and it's also when Discovery should be 30mins out from docking
[16:55] <Lunar_Lander> that heart with the wire attached to it
[16:56] <russss> I guess it'll be cloudy
[16:56] <NigeyS> russss, itll be cloudy with rain and force 9 gales you watch! lol
[16:57] <fsphil> I wonder if 1.5kW of microwave power could clear a gap in the clouds
[16:57] <Lunar_Lander> xD
[16:57] <russss> the current forecast is not looking good.
[16:57] <Lunar_Lander> you'd need a satellite dish for that
[16:57] <Lunar_Lander> a Yagi isn't probably focussed enough
[16:57] <Lunar_Lander> xD
[16:57] <Dan-K2VOL> I don't think so fsphill, considering your microwave oven at home is around that power
[16:58] <Lunar_Lander> I heard of a guy who worked at a satellite dish in the military
[16:58] <Dan-K2VOL> you'd need a few gigawatts I'd imagine
[16:58] <Lunar_Lander> that was a uplink
[16:58] <Zuph> Dan-K2VOL: You mean Jiggawatts.
[16:58] <Dan-K2VOL> maybe 1.21 :-P
[16:58] <Lunar_Lander> and he said that there was the casing of the transmitter, which was very dangerous because of the microwaves created there
[16:59] <Lunar_Lander> and they had instructions, that if someone got a sudden headache, they would immediately leave the controls
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[17:00] <NigeyS> wb John
[17:02] <jgrahamc> Thanks NigeyS
[17:02] <jgrahamc> What did I miss?
[17:02] <Lunar_Lander> we discussed microwaves and satellite uplinks
[17:03] <jgrahamc> Sounds like fun. Sorry, but I had to work :-)
[17:03] <Lunar_Lander> no problem :)
[17:03] <NigeyS> ya err.. microwave ovens to break clouds i think was the jist of things...lol
[17:03] <Lunar_Lander> Dan-K2VOL I just read in your blog about the problem of measuring the helium volume and you mention the GHOST
[17:04] <Lunar_Lander> IIRC Donald Piccard was key in developing the GHOST balloons :)
[17:05] <Dan-K2VOL> oh really, I didn't know he was involved. We're studying their records now actually for useful info
[17:05] <Lunar_Lander> yeah
[17:06] <NigeyS> ghost ?
[17:06] <Lunar_Lander> he told me that he was working at a balloon company run by Schjeldahl and they had been struggling to make the superpressure system work
[17:06] <Lunar_Lander> Piccard had the final solution to use Mylar
[17:07] <Dan-K2VOL> correct, but not technically the solution
[17:07] <Dan-K2VOL> ah wait, yes
[17:08] <Dan-K2VOL> I was thinking that mylar was either singly or biaxially oriented, but it's just biaxially oriented
[17:08] <Dan-K2VOL> which is the solution
[17:08] <Lunar_Lander> yes
[17:08] <Dan-K2VOL> the two-axis lay
[17:08] <groupO> Hibby: is is worth me talking to my friend tonight, or should I wait until we find out with dr mac thinks?
[17:08] <NigeyS> Dan-K2VOL, have you done your plaque in welsh? in case it lands in wales :P
[17:08] <Dan-K2VOL> which may be the problem than the UKHAS team is having with the superpressure party balloons,
[17:09] <Dan-K2VOL> they usually aren't made of mylar-brand anymore
[17:09] <Zuph> NigeyS: Hah, nope, but we have English, German, Spanish and French, plus "Harmless!" in about two dozen languages.
[17:09] <Dan-K2VOL> and they may not be boPET
[17:09] <NigeyS> lol Zuph i guess thats enough languages, welsh is kinda hard at the best of times!!
[17:09] <fsphil> Klingon ... you never know
[17:09] <Lunar_Lander> that reminds me of the Double Eagle I again
[17:09] <Dan-K2VOL> heh
[17:10] <NigeyS> lol phil
[17:10] <Dan-K2VOL> we might want to add russian
[17:10] <Lunar_Lander> when they approached Iceland they noticed that among the flags they packed (for the countries they might land in) they missed an Icelandic one
[17:10] <Lunar_Lander> and they had a wine from each country they might land in
[17:10] <Lunar_Lander> also no Icelandic one
[17:10] <Lunar_Lander> so you should lable it in Icelandic too :)
[17:10] <NigeyS> lol woops!
[17:11] <fsphil> NigeyS, are there actually any people who only speak Welsh - with no English?
[17:12] <NigeyS> not really, you tend to get welsh as the first language the further north you go, tbh its kinda dying out
[17:12] <jgrahamc> Zuph: are you one of the folks working on SpeedBall-1?
[17:12] <GW8RAK> The Welsh language police will be after you for saying that NigeyS
[17:12] <Zuph> jgrahamc: Yep :)
[17:12] Action: NigeyS hides :D
[17:12] <jgrahamc> Zuph: great stuff. Been following along. If it gets near London I'll be out on the roof pointing a Yagi at it.
[17:13] <Dan-K2VOL> very nice wikipedia article on BoPET
[17:13] <NigeyS> we get taught it in school, but only to year 9, then its an option, people just dont take it anymore
[17:14] <Zuph> jgrahamc: Thanks :) We'll be transmitting occasionally on 40M, but primary telemetry is over a VHF sat. link.
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[17:30] <Lunar_Lander> bbl
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[17:40] Nick change: SpeedEvil1 -> SpeedEvil
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[18:37] <rjharrison_> Randomskk I'm meeting up with some people at Farnell on wednesday for lunch, do you want me to see if I can get you a free STM32 dev board?
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[19:04] <griffonbot> @nearsys: Preparing for a presentation at the MACE conference at KSU. I'll talk about near space. #ARHAB [http://twitter.com/nearsys/status/39762519623081984]
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[19:24] Nick change: laurence_ -> Laurenceb_
[19:52] <griffonbot> @pixelseventy2: Payload's coming along nicely for Rover #ukhas http://t.co/0oMe2bU http://t.co/EVaS5ZH [http://twitter.com/pixelseventy2/status/39774522064248832]
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[20:09] <Lunar_Lander> back
[20:10] <Lunar_Lander> Gulf Whiskey Eight Romeo Alpha Kilo is from the UK
[20:11] <Lunar_Lander> (just in case you are wondering, german ham exam needs you to know all the prefixes, GW8RAK)
[20:11] <fsphil> All of them?
[20:11] <Lunar_Lander> and I am kinda practising
[20:11] <Lunar_Lander> yeah well
[20:11] <Lunar_Lander> they have questions like
[20:11] <Lunar_Lander> "Which of these countries have direct borders with Germany?"
[20:11] <Lunar_Lander> and you have to tick F, HB, SP, OZ
[20:12] <Lunar_Lander> and they ask "Which of these callsigns are designated to African Countries?" or "Which of these callsigns belong to only one continent?"
[20:12] <Lunar_Lander> in fact you are right, you only need to know the important ones
[20:13] <Lunar_Lander> because in the Africa question, they mixed in Canada (VE), China (BY) and Japan (JA) into the wrong answers
[20:13] <Lunar_Lander> and the correct answer begins with SU for Sudan
[20:18] <Lunar_Lander> but they have quite funny wrong answers
[20:18] <Lunar_Lander> let me think
[20:18] <Lunar_Lander> the question was like
[20:19] <Lunar_Lander> you hear the call "CQ VK/ZL 4UITU", do you answer to 4UITU?
[20:19] <Lunar_Lander> or something like that
[20:19] <Lunar_Lander> and one of the answers was "No! Only if you are a native Australian or New Zealander"
[20:20] <Lunar_Lander> xD
[20:21] <SpeedEvil> Some of the questions on the driving test theory are similarly fun.
[20:21] <SpeedEvil> 'You have been having an argument'
[20:21] <SpeedEvil> Do you:
[20:21] <SpeedEvil> A) Sit and calm down before driving.
[20:21] <SpeedEvil> B) Drive off immediately.
[20:21] <SpeedEvil> C) Have a drink to calm you down.
[20:22] <Lunar_Lander> xD we got the same one, only without answer C
[20:22] <fsphil> haha, I remember that question
[20:22] <Lunar_Lander> I found it
[20:23] <GW8RAK> Lunar_Lander - it's strange when you enter half way through a conversation.
[20:23] <Lunar_Lander> you hear 4U1ITU call in Voice: "CQ VK/ZL this is 4U1ITU". Shall you call 4U1ITU if you would like to have a QSO?
[20:23] <Lunar_Lander> yeah that is true GW8RAK
[20:23] <GW8RAK> It's been such a long time since I did any amateur radio, that I don't think I remember more than a dozen or so country callsigns
[20:24] <Lunar_Lander> yeah
[20:24] <GW8RAK> I got seriously bored with "You are 599. Say again you location?"
[20:24] <Lunar_Lander> I mean there is only like one other question which requires you to know that PY is Brazil
[20:24] <Lunar_Lander> yeah
[20:24] <GW8RAK> As soon as they got that it was "73's and QRZ"
[20:25] <Lunar_Lander> yeah really nice callers
[20:25] <GW8RAK> But I like datamodes and talking to Germans. Not many countries want to talk technically.
[20:25] <Lunar_Lander> yeah
[20:26] <Lunar_Lander> that is one question too btw
[20:26] <fsphil> Data modes are neat
[20:26] <GW8RAK> And there's a chance to use my Pactor modem in the higher speeds.
[20:26] <natrium42> GW8RAK: http://www.youtube.com/watch?v=8vBn2_ia8zM
[20:26] <Lunar_Lander> what countries have the set DA to DZ
[20:26] <Lunar_Lander> and it is that germany has DA to DR
[20:26] <Lunar_Lander> South Korea has DS and DT and the rest DU to DZ is the Phillipines
[20:27] <fsphil> lol
[20:27] <GW8RAK> Once you get used to fast error checked comms, things like PSK31 are so primitive
[20:27] <GW8RAK> Seen the video before natrium42.
[20:27] <Lunar_Lander> yeah
[20:27] <natrium42> :)
[20:27] <Lunar_Lander> one question asks what SSB is
[20:27] <GW8RAK> Why natrium? Another chemist?
[20:27] <Lunar_Lander> and they want to hear "J3B"
[20:27] <Lunar_Lander> or was it J2B
[20:28] <Lunar_Lander> I think J3B
[20:28] <natrium42> GW8RAK: i just don't like swimming
[20:28] <GW8RAK> Very subtle! Brilliant. :)
[20:28] <natrium42> haha
[20:28] <Lunar_Lander> F3E is talking on FM IIRC
[20:28] <Lunar_Lander> and C3F is TV
[20:29] <Lunar_Lander> and
[20:30] <Lunar_Lander> when you do SSTV you don't report RST but RSV
[20:30] <Lunar_Lander> right? :)
[20:30] <GW8RAK> I remember a question from my exam along the lines of "describe the differences between an A1A and an A3J transceiver". They didn't even mention SSB
[20:31] <Lunar_Lander> oh
[20:31] <Lunar_Lander> A1A is normal Morse I think
[20:31] <GW8RAK> Those are old mode definitions in case anyone remembers them.
[20:31] <Lunar_Lander> yeah
[20:31] <fsphil> Never heard of them
[20:31] <GW8RAK> Yes a CW and a SSB transceiver.
[20:32] <Laurenceb_> too many acronyms
[20:32] <Lunar_Lander> the number is something about if there is a carrier and if it is modulated and all those things
[20:32] <Laurenceb_> *head explodes*
[20:32] <GW8RAK> Back in the days of writing essays, rather than multiple choice. I think I am giving my age away there.
[20:32] <Lunar_Lander> oh
[20:33] <Laurenceb_> soon the exams will come pre answered
[20:33] <Lunar_Lander> lol
[20:33] <Lunar_Lander> like in "Idiocracy"?
[20:33] <Laurenceb_> yes
[20:34] <GW8RAK> Haven't heard that term before
[20:34] <GW8RAK> Must get it into conversation tomorrow
[20:35] <Lunar_Lander> that is a great movie
[20:40] <GW8RAK> Must get the soldering iron on and finish the flight computer. I've just been sidetracked by so many other projects recently.
[20:40] <Lunar_Lander> yeah
[20:40] <GW8RAK> If I can't get the mobile phone sorted this week, I'll abandon it till later.
[20:40] <Lunar_Lander> I just hope that I don't end up as a sweating french talking guy who has a wife who is 20 years younger
[20:41] <Lunar_Lander> and shouting at her while she is in the bathtub
[20:41] <Lunar_Lander> (note: That situation really is in a movie)
[20:41] <GW8RAK> Is that the most off topic comment ever?
[20:41] <Lunar_Lander> I think so
[20:42] <Lunar_Lander> I tried to break the record for that you know :)(
[20:42] <GW8RAK> Certainly beats me
[20:42] <Lunar_Lander> yeah
[20:42] <Lunar_Lander> to get back on track
[20:42] <Lunar_Lander> I found this: http://cgi.ebay.de/Arduino-Mega-Atmega1280-16AU-Atmega-1280-USB-Kabel_W0QQitemZ280628968073QQcategoryZ65507QQcmdZViewItemQQ_trksidZp5197.m7QQ_trkparmsZalgo%3DLVI%26itu%3DUCI%26otn%3D2%26po%3DLVI%26ps%3D63%26clkid%3D7242779941797828753
[20:43] <Lunar_Lander> this seems to be similar to the device used in the Dutch balloon last year
[20:43] <GW8RAK> I haven't really considered an Arduino yet. Still working with a Picaxe which does all I want at this time.
[20:44] <Lunar_Lander> ah
[20:44] <Lunar_Lander> I just saw that apperently the NTX2 goes directly into the pins there
[20:44] <Lunar_Lander> but I need to get more information first
[20:47] <Lunar_Lander> some ebay offers say "Clone Arduino Mega"
[20:47] <Lunar_Lander> what about these?
[20:49] <Lunar_Lander> Breaking News
[20:49] <Lunar_Lander> Tim found his balloon in Germany!
[20:49] <fsphil> wow
[20:49] <Lunar_Lander> http://hollandshoogte.wordpress.com/2011/02/21/hohoho-iii-found-in-germany-after-2-months/
[20:51] <fsphil> impressive
[20:51] <Lunar_Lander> yeah
[20:51] <fsphil> gives me hope :)
[20:51] <Lunar_Lander> and not so far from me
[20:52] <Lunar_Lander> the river right west to the "found" marker is the Ems
[20:52] <Lunar_Lander> and that is the closest big river to here
[20:52] <Lunar_Lander> :)
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[20:53] <Lunar_Lander> I should be somewhere in the region of the capital D
[20:53] <Lunar_Lander> :)
[20:54] <Lunar_Lander> lol: "So, do NOT buy the Falcom FSA-03. The Falcom FSA03 sucks it is a bad module. To add keywords: Falcom terrible horrible awful problem problems agony hell devil brain-damage headache."
[20:55] <fsphil> ah I still like 'em :)
[20:56] <Lunar_Lander> :)
[20:56] <Lunar_Lander> btw
[20:57] <Lunar_Lander> Steve's excel sheet says that it will be a big challenge to smash the 40 km mark
[20:57] <Lunar_Lander> a 1200 balloon is required at lest
[20:57] <fsphil> anything above 35km is tricky from the looks of it
[20:57] <Lunar_Lander> least
[20:57] <Lunar_Lander> yeah
[20:58] <Lunar_Lander> and what is the record again
[20:58] <Lunar_Lander> I think 56 km for a balloon made by JAXA
[20:58] <fsphil> just about 40km I think, for an amateur flight
[20:58] <Upu> ping NigeyS
[20:58] <Lunar_Lander> yeah
[20:58] <Lunar_Lander> 39600 or so
[20:58] <Lunar_Lander> and 56 km is for big balloons :)
[20:59] <SpeedEvil> For a zp balloon, density goes as 1/diameter I think
[20:59] <SpeedEvil> so get 10* diameter, and you can go to 1/10th the atmosphere
[20:59] <Lunar_Lander> yes
[21:03] <Lunar_Lander> oh btw I still have those two Vaisala RS80 I bought on ebay
[21:03] <Lunar_Lander> but I think they will remain on the ground a bit longer
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[21:09] <fsphil> are they any use?
[21:10] <Lunar_Lander> they have calibrated sensors
[21:11] <Lunar_Lander> but you'd need to know how to employ them
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[21:14] <NigeyS> evening John
[21:14] <jgrahamc> NigeyS: evening
[21:15] <NigeyS> how's things this evening ?
[21:16] <jgrahamc> NigeyS: Bizarre. Got into an argument with an Internet troll who's now accussing me of being a member of 'Anonymous'
[21:16] <russss> heh
[21:16] <jgrahamc> BTW. That pot of paint I used was 250ml. Used about half. Just checked.
[21:17] <NigeyS> lol oh dear, a troll indeed!
[21:17] <NigeyS> 250ml.. thanks, ill have a search for it!
[21:17] <jgrahamc> Unfortunately, I fell for the troll trap and didn't realize that she's a well known troublemaker.
[21:17] <fsphil> They're everywhere
[21:18] <Laurenceb_> anonymous got epically trolled by westboro baptist church
[21:19] <Laurenceb_> Marlborough baptists church; god loves fags
[21:19] <NigeyS> lol
[21:20] <jgrahamc> Really? What happened?
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[21:22] <Laurenceb_> they put out a fake 'anonymous' announcement saying anonymous were going to DDOS them
[21:23] <Laurenceb_> so they could grab all the ips from the lame LOIC attacks
[21:23] <NigeyS> hehehe oh dear
[21:23] <jgrahamc> Oops
[21:23] <jgrahamc> GW8RAK: Was it you that was asking me about Nokia phones?
[21:24] <GW8RAK> Yes it was. I'm looking for a Nokia 6310
[21:25] <Laurenceb_> does it have serial?
[21:25] <jgrahamc> So it turns out I have a Motorola phone and a Nokia 1208
[21:26] <NigeyS> GW8RAK, does it have to be a nokia, i have a t68i here
[21:26] <GW8RAK> Yes Laurenceb_, quite a slow serial interface.
[21:26] <Laurenceb_> ive used ericsson t68 before... and something really old like a t28
[21:26] <Laurenceb_> cant remember
[21:27] <Laurenceb_> NigeyS: thats perfect
[21:27] <GW8RAK> I've only really come across people using the 6310 with a Picaxe. I don't know about the others. I'll google a bit and see if it will do. I know that the t68i has been used for various projects.
[21:27] <Laurenceb_> eww picaxe
[21:27] <Laurenceb_> well unless its been improved
[21:28] <NigeyS> lol laurenceb loves picaxe's :p
[21:28] <Laurenceb_> it (used) to be really limited
[21:28] <NigeyS> GW8RAK, if you cant get a nokia and want to try a t68 i can send it up to you
[21:28] <Laurenceb_> http://www.rev-ed.co.uk/picaxe/software.htm
[21:28] <Laurenceb_> ok nothings changed :P
[21:28] <NigeyS> lol
[21:28] <GW8RAK> Okay NigeyS, thank you. I've sent out a flyer at work to other companies on site and hopefully someone will come back with something positive.
[21:29] <Laurenceb_> on site? where do you work
[21:29] <NigeyS> okies, just let me know if you need it :-)
[21:30] <GW8RAK> Laurenceb_ you don't have to use the flowchart programming. I find it too much work. I work on a business park and there are another 35 companies there or so.
[21:30] <Laurenceb_> so you're sending round a flyer for old phones heh
[21:30] <Laurenceb_> worth a shot i guess
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[21:30] <GW8RAK> It's an air cadet project so with a bit of goodwill, someone may donate one.
[21:31] <Laurenceb_> oh neat
[21:31] <GW8RAK> And hopefully Airbus will donate some helium and perhaps a few quid for balloons.
[21:32] <GW8RAK> They use helium to pressurise the wings apparently and use quite a lot of it.
[21:33] <Laurenceb_> on the airbus passanger planes?
[21:33] <Laurenceb_> wtf
[21:33] <GW8RAK> Yes.
[21:33] <Laurenceb_> that sounds totally half baked
[21:33] <GW8RAK> Although it could be just for the fuel tanks.
[21:33] <Laurenceb_> surely it leaks
[21:33] <Laurenceb_> hmm yeah i could understand fuel tanks
[21:33] <Lunar_Lander> they pressurize the tanks on rockets with helium
[21:33] <GW8RAK> Information is second hand, although I have contacts there.
[21:33] <rjharrison_> GW8RAK Where abouts are you based?
[21:33] <Laurenceb_> yeah, but a rocket isnt a passanger plane
[21:34] <GW8RAK> North East Wales, about 15 miles from Chester
[21:34] <Lunar_Lander> yeah
[21:34] <rjharrison_> Cool
[21:34] <Lunar_Lander> I just was to say that you could as well use pressurized air on the plane
[21:34] <Lunar_Lander> maybe
[21:34] <rjharrison_> Where the zoo is :-)
[21:34] <GW8RAK> That's it.
[21:34] <Lunar_Lander> hey rjharrison_ by the way
[21:34] <Lunar_Lander> nice to see you again
[21:34] <GW8RAK> I've been working on the balloon for a long time, but really need to get it finished now.
[21:35] <GW8RAK> Keep finding more interesting sidelines to play with.
[21:35] <rjharrison_> Yep been away with bad headaches
[21:35] <Lunar_Lander> oh ouch
[21:35] <rjharrison_> On the mend now so you will be seeing a bit more of me
[21:35] <Lunar_Lander> yes
[21:35] <Lunar_Lander> want to have my updates?
[21:36] <GW8RAK> Welcome back
[21:36] <Lunar_Lander> yeah welcome back first of all
[21:36] <Lunar_Lander> :)
[21:36] <rjharrison_> Had them for almost a year and they got real bad in sept - jan now on amytriptalin 20mg and its loads better
[21:36] <Lunar_Lander> that is good
[21:36] <rjharrison_> Lunar_Lander yep hows it been going
[21:37] <Lunar_Lander> the person who wanted to do my balloon electronics is not really talkative anymore
[21:38] <Laurenceb_> never would have expected that
[21:38] <Lunar_Lander> so I decided to take up the action and yesterday I got some information here on possible flight computers
[21:38] <Lunar_Lander> also I think I will go for a NTX2 radio
[21:38] <Lunar_Lander> yeah Laurenceb_ it is sad but tru
[21:38] <Lunar_Lander> true
[21:38] <Laurenceb_> heh
[21:39] <rjharrison_> There's quite a bit about NTX2 trackers on here shouldn't be too bad
[21:39] <Lunar_Lander> yes
[21:39] <rjharrison_> I may even have a spare pcb kicking around
[21:40] <Lunar_Lander> and if everything is correctly set up, the flight can be seen on spacenear.us, right?
[21:40] <rjharrison_> Yep
[21:40] <GW8RAK> They are easy to work with Lunar_Lander
[21:40] <Lunar_Lander> that is good
[21:40] <Lunar_Lander> yeah
[21:40] <Lunar_Lander> I think you only plug them into an arduino or so
[21:41] <rjharrison_> Lunar_Lander i have one of these handy if you want it http://www.robertharrison.org/images/icarus2/IcarusII-Bare.JPG
[21:42] <rjharrison_> vary basic tracker but works
[21:42] <rjharrison_> very
[21:42] <Upu> I have a spare Ava board too but my GPS you'll have to source from the US
[21:42] <Lunar_Lander> yes
[21:42] <Upu> Robs is better mine is a bit cludgy
[21:42] <NigeyS> robbie is that an open sourced pcb design?
[21:42] <Lunar_Lander> so I would have to get the components noted on the PCB and solder them in?
[21:43] <rjharrison_> I don't mind I knocked it up of you want the files I'll send them to yuou
[21:43] <rjharrison_> Yep there is a schematic
[21:43] <Lunar_Lander> ah
[21:43] <Lunar_Lander> yeah that sounds good
[21:43] <Lunar_Lander> so you have some kind of parts list and so on?
[21:44] <rjharrison_> http://www.robertharrison.org/svn/filedetails.php?repname=the-icarus-project&path=%2FIcarus+II%2Feagle%2FIcarus+II%2FIcarus.pdf
[21:44] <rjharrison_> If you can work it out from that
[21:44] <Lunar_Lander> loading
[21:45] <NigeyS> Upu, just found some thicker coax in the attick! lol
[21:45] <Upu> I don't think the thickness makes much difference but hey ho :)
[21:45] <Lunar_Lander> PD0 receives
[21:45] <Lunar_Lander> PD1 transmits
[21:45] <Lunar_Lander> that I got so far
[21:45] <NigeyS> lots of spare electric cable to .. hmmm
[21:46] <rjharrison_> that's the uard for debugging the ntx2 does the radio tx
[21:46] <Upu> its a rude word to strip sometimes
[21:46] <GW8RAK> Do people use active GPS aerials or just plain ones? i.e. no inbuilt preamp
[21:46] <Upu> I use an active
[21:46] <Lunar_Lander> do you mind a dumb question?
[21:46] <Lunar_Lander> when I solder in a ATMega
[21:46] <Upu> there are no dumb questions
[21:46] <Lunar_Lander> or the µC that goes into there
[21:46] <Laurenceb_> why is the sky blue
[21:47] <Lunar_Lander> will the pins have the right setup automatically?
[21:47] <Lunar_Lander> I mean will it be like the plan says
[21:47] <Laurenceb_> yes.. kind of
[21:47] <Laurenceb_> the gpio will be set to high Z
[21:47] <rjharrison_> Well it will need the code blowing onto the avr
[21:47] <Laurenceb_> as in input with no pullup
[21:47] <Lunar_Lander> yes
[21:47] <Lunar_Lander> so it needs to be programmed of course
[21:47] <Upu> Have you got an Arduino ?
[21:48] <Lunar_Lander> no, I have only looked at the Arduino so far
[21:48] <rjharrison_> Lunar_Lander if you do james has got a good shield for it
[21:48] <Upu> I'd get one makes it very easy to play about with it
[21:48] <Laurenceb_> xtal will be running if you config the xtal with the fusebits
[21:48] <rjharrison_> that supports GPS and ntx2
[21:48] <Lunar_Lander> yes that is another question
[21:48] <Lunar_Lander> what exactly is a "Shield" in this sense?
[21:49] <Lunar_Lander> an extra board?
[21:49] <Upu> Lunar_Lander http://ava.upuaut.net/files/IMG_0081.JPG
[21:49] <Lunar_Lander> ah
[21:49] <Upu> that was my prototype, sheild fits on top of an Arduino
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[21:49] <rjharrison_> a bit of pcb than plugs onto the arduino
[21:49] <Lunar_Lander> ah
[21:49] <Upu> all you're seeing there is an Arduino with GPS plugged into the serial ports and a temperature sensor on it
[21:50] <Lunar_Lander> it's the middle sized arduino right?
[21:50] <Upu> thats a Ducimelivo or something, new one is the Uno but it's about the same for all intents
[21:51] <Lunar_Lander> ah
[21:51] <Lunar_Lander> because Tim had used a Mega
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[21:51] <Lunar_Lander> (tim from holland=
[21:51] <Lunar_Lander> *)
[21:51] <Upu> yeah thats a larger board, if you need the extra memory / inputs sure
[21:51] <Upu> personally my code only uses about 1/3rd of the space on that one
[21:51] <Lunar_Lander> ah
[21:52] <Lunar_Lander> so a Mega could accomodate more sensors
[21:52] <jgrahamc> Arduino shields are daughter boards that sit on top of the main board. Like this: http://1.bp.blogspot.com/-uR3dzXTFyF4/TWBE1bh1VuI/AAAAAAAAAco/L56aTY8UZJM/s1600/photo-7.JPG
[21:52] <Lunar_Lander> ah I see
[21:52] <jgrahamc> Bad thing is the pin spacing is messed up so you either do a custom PCB or do this: http://2.bp.blogspot.com/-WzOFt8aI8XI/TWBFh8Pc1xI/AAAAAAAAAcw/xrOlz_R_VAk/s1600/photo-8.JPG
[21:52] <Upu> http://www.coolcomponents.co.uk/catalog/product_info.php?cPath=50_74&products_id=583 £20
[21:53] <Lunar_Lander> ouch
[21:53] <Upu> yeah Lunar_Lander
[21:53] <Lunar_Lander> I mean the bent pins
[21:53] <jgrahamc> Have to hand bend those pins with a pair of small pliers to get the angle right.
[21:53] <Lunar_Lander> not the offer :)
[21:53] <Upu> nice hack :)
[21:53] <Lunar_Lander> the offer looks good
[21:53] <Lunar_Lander> yeah
[21:53] <Lunar_Lander> I have to say
[21:53] <Lunar_Lander> in terms of electronics I am still a rookie
[21:53] <Lunar_Lander> well
[21:53] <Lunar_Lander> do you remember that "Real Robots" magazine?
[21:54] <Upu> then when you're ready to make your own PCB prototype : http://arduino.cc/en/Main/Standalone
[21:54] <Lunar_Lander> I used to buy that but the components there were for plugging in
[21:54] <rjharrison_> right I'm going to go and sit with the missus for a bit
[21:55] <rjharrison_> See you all tomorrow
[21:55] <NigeyS> night rjharrison_
[21:55] <Upu> night
[21:55] <Lunar_Lander> good night and thank you rjharrison_ !
[21:55] <Upu> Not seen that one Lunar_Lander
[21:55] <Upu> "Input" was my era
[21:55] <Lunar_Lander> yeah
[21:55] <jgrahamc> I too must away. Bye.
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[21:56] <rjharrison_> upu I see you arn't testing your payload tonight
[21:56] <Lunar_Lander> in the end you had a little robot that could follow black lines or a light spot
[21:56] <Upu> haha
[21:56] <rjharrison_> at least i can't here it
[21:56] <Upu> spying on me huh :)
[21:56] <Lunar_Lander> and the components were, as I said, simple plug connections
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[21:56] <Upu> its off tonight just being trying to untangle this damn parachute
[21:56] <Upu> cross form thingy
[21:56] <Lunar_Lander> yeah
[21:56] <rjharrison_> I brought one from spherachutes
[21:57] <Upu> I have a x-form and a normal one
[21:57] <Lunar_Lander> mine too
[21:57] <Upu> not sure which to use
[21:57] <Lunar_Lander> mine is 72" and yours rjharrison_ ?
[21:57] <rjharrison_> cool have a play and do some teathered drop tests
[21:57] <rjharrison_> 32 and a 48 iirc
[21:57] <Upu> 48" cross form
[21:57] <Upu> 32" round
[21:58] <Upu> will went its dry
[21:58] <Upu> when
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[21:58] <Lunar_Lander> yeah I actually wanted to throw it from somewhere with a pack of sugar attached
[21:58] <Lunar_Lander> I even called up the building manager at my university
[21:59] <Lunar_Lander> and he said that we could probably arrange for that
[21:59] <rjharrison_> hehe cool nights all
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[21:59] <Lunar_Lander> night :)
[21:59] <Upu> I lobbed a bag of sand with it attached in the car park near work and it didn't open and sand went everywhere
[21:59] <Upu> so I just beat it back in doors quick sharp :)
[21:59] <Lunar_Lander> Xd yeah
[21:59] <Dan-K2VOL> spherachutes are very good, you could skip the drop test and just ask them via email about expected drop speeds/kg of payload
[22:00] <Lunar_Lander> bty yay Cool Components does PayPal
[22:00] <Lunar_Lander> yeah, I did that math already
[22:00] <Lunar_Lander> I got 3.5 m/s near the ground for 2 kg of weight
[22:00] <Lunar_Lander> of course slower if lighter
[22:02] <Dan-K2VOL> make sure you ask spherachutes for the balloon attachment option when ordering
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[22:02] <Lunar_Lander> yeah true
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[22:03] <Dan-K2VOL> Leavin work to head to the hackerspace and get back on the balloon programming!
[22:03] <Lunar_Lander> ok, see you later dan :)
[22:03] <Dan-K2VOL> ttyl
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[22:04] <Lunar_Lander> Upu?
[22:04] <Upu> yeah
[22:05] <Lunar_Lander> I want to try to make a "shopping list" now
[22:05] <Upu> ok
[22:05] <Lunar_Lander> so I'd need
[22:05] <Lunar_Lander> one NTX2
[22:05] <Lunar_Lander> one arduino board
[22:05] <Upu> Arduino Uno, bread board, some wires, NTX2, some resistors of varying values
[22:06] <Upu> some sort of GPS with a break out
[22:06] <Lunar_Lander> 470 Ohms in that range?
[22:06] <Upu> well depends
[22:06] <Upu> let me check my diagram
[22:07] <Lunar_Lander> or like on the page you showed me?
[22:07] <Lunar_Lander> he has 220 and 10k
[22:07] <Upu> 10K 22k 4k7
[22:07] <Upu> but it all depends on your design
[22:07] <Lunar_Lander> ah
[22:08] <Upu> DS1821 temp sensor, you can get these free by applying for an engineering sample
[22:09] <Lunar_Lander> at coolcomponents too?
[22:09] <GW8RAK> Where are you Lunar_Lander? I've got a big junk box, and rather than you buying more resistors than you need, I'll send you some.
[22:09] <Lunar_Lander> I am in North-Western Germany
[22:09] <Upu> http://www.maxim-ic.com/datasheet/index.mvp/id/2794/t/or#f
[22:09] <GW8RAK> Okay, no probs. When you have your shopping list, let me know what you want.
[22:09] <Upu> can get a free sample of them
[22:10] <Upu> To92 one
[22:10] <Lunar_Lander> DS1821+ it is?
[22:10] <Upu> yeah in a To92 packaging
[22:10] <Lunar_Lander> ah
[22:11] <Lunar_Lander> so breadboard, arduino, NTX2, the temp sensors
[22:11] <Upu> 1 sec wife calling
[22:11] <Lunar_Lander> "Breadboard Maxi" I found here
[22:11] <Lunar_Lander> ok
[22:11] <NigeyS> lots of silly resistor values :P
[22:11] <fsphil> http://www.bbc.co.uk/news/uk-england-dorset-12526271
[22:11] <Lunar_Lander> xD
[22:11] <NigeyS> and some 10uf and 100uf caps :)
[22:11] <Lunar_Lander> yeah
[22:12] <Lunar_Lander> ROFL phil
[22:12] <Lunar_Lander> coils too :)?
[22:13] <Lunar_Lander> then we'd have the whole family
[22:13] <Lunar_Lander> R, C and L
[22:13] <fsphil> inductors are weird
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[22:13] <Lunar_Lander> yeah
[22:13] <Lunar_Lander> worst thing is
[22:13] <Lunar_Lander> when I think of coils, I want to have noodles
[22:15] <Lunar_Lander> well
[22:15] <Lunar_Lander> http://www.coolcomponents.co.uk/catalog/product_info.php?products_id=417
[22:15] <Lunar_Lander> is that one good?
[22:17] <Upu> yeah thats the one I use
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[22:18] <Lunar_Lander> upu
[22:18] <Lunar_Lander> I just saw that the site would let me order the DS1281+ and the DS1281S+ as samples together
[22:19] <Upu> good isn't it
[22:19] <Upu> Lunar_Lander http://milesburton.com/index.php?title=Dallas_Temperature_Control_Library#Supported_Devices
[22:19] <Upu> thats how to make it work
[22:20] <Lunar_Lander> yeah
[22:20] <Lunar_Lander> so I shall get myself both types?
[22:20] <Upu> why not ?
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[22:21] <Lunar_Lander> yeah
[22:21] <Lunar_Lander> it says 2 of each
[22:21] <Lunar_Lander> it had that automatically
[22:21] <Lunar_Lander> and it had a disclaimer
[22:22] <Lunar_Lander> "Notice: yahoo and gmail addresses will not work"
[22:22] <Upu> not got an address ?
[22:23] <Lunar_Lander> I got one
[22:23] <Upu> sorted then
[22:23] <Lunar_Lander> I only thought the disclaimer to be funny xD
[22:26] <Upu> ok I have to walk the dog
[22:26] <Upu> bbl
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[22:28] <Lunar_Lander> what shall I say under "Estimated Annual Usage"?
[22:28] <Lunar_Lander> <1000 I would say
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[22:43] <Upu> haha unless you plan on loosing alot of payloads
[22:43] <Upu> make sure you get the right frequency NTX2 as well
[22:44] <Upu> and whatever else you want, accelerometers, pressure sensors, pyro cut down eletronics, piezo siren for location assistance, flashing LEDs for bling etc :)
[22:45] <Lunar_Lander> yeah
[22:45] <Lunar_Lander> dan got a tech who makes cutdowns
[22:46] <Lunar_Lander> "What is your application (what is the end product)?"
[22:46] <Lunar_Lander> hmm
[22:46] <Lunar_Lander> balloon experiment?
[22:46] <Upu> "high altitute sensor platform" :)
[22:46] <Upu> god my typing today
[22:46] <MrCraig> "sub orbital spy platform?"
[22:47] <Upu> amateur radio experiment
[22:47] <Upu> haha
[22:47] <Upu> "lasers in space"
[22:47] <Lunar_Lander> xD!
[22:48] <MrCraig> I was put off the balloon launch idea for about a year because the first person I approached was from the rocketry society and told me that neither the CAA nor the military would look kindly on my experiment. If I flew a camera over a base they might be cheesed off.
[22:49] <Lunar_Lander> sensors ordered
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[22:51] <Lunar_Lander> but I see that sparkfun has a little more selection in sensors compared to coolcomponents
[22:52] <MrCraig> order the components themselves and solder them to an off-cut of prototyping or strip board?
[22:52] Nick change: SAIDias -> W0OTM
[22:53] <MrCraig> then the target cpu is irrelevant
[22:53] <MrCraig> brb all
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[22:58] <MrCraig> re
[22:58] <Lunar_Lander> wb
[22:59] <MrCraig> thanks, new client - I needed a message to know I actually made it back here :)
[22:59] <MrCraig> Empathy
[23:00] <Lunar_Lander> yay
[23:00] <Lunar_Lander> so Upu
[23:00] <Upu> yup
[23:00] <Lunar_Lander> did you get my comment that sparkfun has more sensors at the moment
[23:03] <Upu> Yes
[23:03] <Upu> they have alot of stuff there for the hobbyist and a good selection of break out boards but they are US based aren't thye ?
[23:04] <Lunar_Lander> yes
[23:04] <Lunar_Lander> the cool components don't have that much in selection
[23:05] <Upu> all depends what you want
[23:06] <Lunar_Lander> yes
[23:06] <Lunar_Lander> so I got those two sensors I now ordered as samples
[23:07] <Upu> enough for internal and external temps
[23:08] <Lunar_Lander> yes
[23:08] <Lunar_Lander> so essential would be IMO
[23:08] <Lunar_Lander> humidity, pressure and GPS
[23:10] <Upu> doubt there is much humidy up there
[23:11] <Lunar_Lander> yes
[23:11] <Lunar_Lander> so that could be left away maybe#
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[23:15] <Upu> ok I'm off night all o7
[23:15] <MrCraig> nighters
[23:15] <Lunar_Lander> night
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[23:33] <NigeyS> morning juxta
[23:33] <juxta> hey
[23:34] <NigeyS> how are you this morning ?
[23:35] <juxta> good thanks
[23:35] <juxta> had a bit of a sleep in
[23:35] <NigeyS> :o shocking! lol
[23:36] <Lunar_Lander> hello juxta
[23:37] <juxta> hi Lunar_Lander
[23:37] <MrCraig> hi juxta
[23:37] <juxta> hi MrCraig
[23:37] <juxta> popular this morning ;p
[23:38] <fsphil> meh, it's juxta
[23:38] <juxta> hehe
[23:39] <juxta> Darkside, dont know if you checked the tracking, but the sparkfun package will be delivered in the next few hours I reckon
[23:41] <NigeyS> lol phil
[23:42] <Darkside> juxta: cool
[23:42] <Darkside> i'm heading into uni soom
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[00:00] --- Tue Feb 22 2011