highaltitude.log.20120119

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[00:01] <gonzo___> fsphil, I recon that artical came from a conversation I had with the guy about HAB radios
[00:01] <gonzo___> And I seem to recall reading about self certification of kit
[00:05] <gonzo___> He reconed that all you;d need to do for fsk is generate an audio tine in IQ from the processor then flip the phase of one chan. Which sounds about ruight. It should flip the modulation +ve then -ve about a central carrier
[00:05] <gonzo___> but with a little cleverness, could change to all sorts of modes
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[00:49] <NigeyS> yo dan
[00:49] <NigeyS> Dan*
[00:52] <SpeedEvil> That's PSK gonzo
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[01:03] <Dan-K2VOL> hola
[01:03] <Dan-K2VOL> hi NigeyS
[01:04] <NigeyS> how's things dude ?
[01:04] <Dan-K2VOL> pretty good!
[01:05] <Dan-K2VOL> u?
[01:05] <NigeyS> not to bad :D
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[02:36] <SpeedEvil> LEDs just got better (for lighting)
[02:36] <SpeedEvil> http://cree.com/products/xlamp_xbd.asp#xrcdocs - 2.5mm square, 300lm, 3w
[02:37] <SpeedEvil> With a 30cm square of LEDs, you can create as much light as a 6m on a side window.
[02:37] <SpeedEvil> $1.49 each in ones.
[02:50] <kristianpaul> had you sampled it?
[02:54] <SpeedEvil> yes
[02:54] <SpeedEvil> They don't seem actually purchasable yet
[02:55] <SpeedEvil> More interestingly, you can buy LEDs to do a 100w equiv light for about 3 quid in bulk.
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[07:47] <cuddykid> morning all
[07:47] <number10> morning
[07:47] <natrium42> hi cuddykid
[07:48] <natrium42> & number10
[07:48] <number10> hi
[07:48] <cuddykid> hiya both :)
[07:50] <natrium42> cuddykid: can i borrow $185k?
[07:51] <natrium42> i want to buy a gTLD
[07:51] <cuddykid> lol
[07:52] <natrium42> .ham
[07:52] <cuddykid> if only I had even a tenth of that!
[07:52] <natrium42> or .hab
[07:52] <natrium42> or .highaltitude
[07:52] <natrium42> come on, you'll buy your sports car next year
[07:53] <natrium42> *puppyeyes*
[07:53] <cuddykid> lol
[07:57] <number10> you can get a .com for a few $ and one related is available
[07:59] <natrium42> number10: dude, a freaking *gTLD*
[07:59] <number10> yep
[07:59] <natrium42> you could do http://www.google.cuddykid
[08:00] <cuddykid> haha, brilliant
[08:01] <number10> highaltitudeballooning.com is free
[08:01] <natrium42> tl;dr
[08:18] <natrium42> well, g'nite
[08:25] <UpuWork> http://newsthump.com/2012/01/17/radical-clerics-deportation-ruled-out-on-grounds-that-he-didnt-infringe-us-copyright-laws/
[08:25] <UpuWork> err sorry wrong channel but you may find it amusing
[08:25] <UpuWork> morning
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[08:31] <number10> morning
[08:35] <daveake> It is. Could do with more sleep tho
[08:36] <number10> yes - getting up at 5:30 is not good
[08:39] <number10> for the HABber with money http://www.willburt.com/ProductVideos.asp?vid=MilitaryHDNL
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[08:42] <daveake> Nice :)
[08:44] <number10> not too sure it will fit on the 406
[08:44] <daveake> A HABber with money would merely buy a suitable vehicle :)
[08:48] <number10> well they do sell a nice off road vehicle http://www.willburt.com/ProductVideos.asp?vid=vidCrusher
[08:49] <daveake> Would speed up those off-road excursions
[08:51] <number10> I think that and a chainsaw and HAB recovery would be less stressfull
[08:51] <daveake> Get one with a set of those tree-cutting jaws
[08:53] <number10> http://www.youtube.com/watch?v=YzaXMzYFtSM
[08:53] <number10> must do some work
[08:54] <gonzo_> just go straight for a helicopter
[08:56] <number10> yes I suppose that could also be used for the occasional sea recovery
[08:58] <gonzo_> be ideal, a high platform for getting the telem down to the ground, plan view to see/DF and the chance to slide down ropes and worry the locals
[09:02] <earthshine> o/
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[10:26] <Laurenceb_> sup
[10:26] <zyp> sup yourself
[10:26] <Laurenceb_> chillaxing :P
[10:29] <fsphil> axing
[10:30] <Laurenceb_> please put your hands in the air and walk away from the primary school
[10:30] <daveake> :)
[10:30] <daveake> cool post bro
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[10:53] <Laurenceb_> http://static.rcgroups.net/forums/attachments/3/0/7/6/5/a4564721-37-kreschenie_P1070269.jpg
[10:53] <Laurenceb_> meanwhile in russia
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[11:00] <x-f> it's a religic tradition
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[11:05] <daveake> s/religic/insane
[11:22] <fsphil> that is generally always true
[11:34] <daveake> agreed
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[12:01] <cuddykid> ergh - that exam was nasty
[12:10] <fsphil> mocks?
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[12:16] <NigeyS> ping SpeedEvil
[12:18] <SpeedEvil> ?
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[12:22] <SpeedEvil> PONG NigeyS
[12:23] <daveake> Internet ping speeds reach an all time low
[12:24] <NigeyS> hey speedy
[12:25] <NigeyS> i had a letter today, from the lovely nhs in wales
[12:26] <NigeyS> another treatment i cant have done due to "budget restrictions" :@
[12:33] <SpeedEvil> :/
[12:35] <NigeyS> got tolove the welsh nhs eh :(
[12:35] <daveake> On of the guys on my 1st launch has just uploaded the next 2 videos from the day.
[12:35] <daveake> http://www.youtube.com/watch?v=W_jP26YH020 has the chase
[12:38] <Laurenceb> heh i have that yagi
[12:39] <daveake> Works well and not too long
[12:42] <daveake> At the end of the video you see all those tall trees it managed to (just) miss :p
[12:43] <daveake> Next video here - http://www.youtube.com/watch?v=fYXrhCh4qlQ
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[12:45] <cuddykid> fsphil: nah, uni exams :(
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[12:55] <nick_> cuddykid: what are you studying?
[12:56] <cuddykid> nick_: economics
[12:56] <nick_> Cool
[12:56] <cuddykid> doing some comp sci modules as well - they're fun :D
[12:56] <nick_> I used to like studying economics
[12:56] <nick_> Now I just listen to some podcasts.
[12:57] <cuddykid> ahh right, nice :)
[12:58] <Jessica_Lily> :P
[12:59] <cuddykid> damn, eagle didn't save my schematic
[12:59] <nick_> Economics AS was by far the easiest course I ever did.
[13:01] <Jessica_Lily> AS as in A-levels?
[13:01] <Jessica_Lily> :S
[13:01] <cuddykid> nick_: yeah, it's annoying a level economics - none of the theories that they teach are actually derived/fully explained - they just want you to "accept" them. Now at uni it's far more maths based
[13:01] <cuddykid> Jessica_Lily: 1st year of A level :)
[13:01] Action: Jessica_Lily is also a brit
[13:01] <cuddykid> :D
[13:02] <Jessica_Lily> ^_^
[13:02] <Jessica_Lily> at manchester met uni ^_^
[13:02] <UpuWork> http://www.youtube.com/watch?v=HC42awe6dqo
[13:02] <cuddykid> oh cool, what are you studying?
[13:02] <nick_> Yeah, AS economics is basically GCSE economics in a year.
[13:02] <cuddykid> lol UpuWork
[13:02] <UpuWork> actually quite serious that one
[13:03] <Jessica_Lily> cuddykid: chemistry
[13:03] <cuddykid> Jessica_Lily: oh, very hard - did AS chem - didn't like it :P
[13:04] <nick_> Chemsitry was my most fun a level
[13:04] <Jessica_Lily> I dropped As economics after 4 weeks
[13:04] <Jessica_Lily> xD
[13:04] <Jessica_Lily> took up biology instead
[13:04] <Jessica_Lily> xD
[13:04] <nick_> I'm a physicsist but A level physics was just terrible.
[13:04] <Jessica_Lily> It was boring we kept just drawing graphs
[13:05] <cuddykid> lol
[13:05] <Jessica_Lily> xD
[13:05] <Jessica_Lily> I don't actually remember what they were about ether
[13:06] <Jessica_Lily> Yeh I did Computer science, Electronics, Chemistry and Biology ^_^
[13:06] <cuddykid> probably demand/supply - seems to be standard for a level
[13:06] <cuddykid> ahh cool
[13:06] <cuddykid> have you done a HAB flight?
[13:07] <Jessica_Lily> not yet, hope to do it in the summer if i get enough time and money
[13:07] Action: nick_ is in the same position.
[13:07] <nick_> Although maybe not this summer.
[13:07] <UpuWork> going to be a busy year I suspect
[13:07] <Jessica_Lily> I most likely won't though, I'll spend ages working on the electronics of the paylad
[13:07] <nick_> Trying to launch an experiment that will take me longer to make
[13:07] <Jessica_Lily> *load
[13:07] <Jessica_Lily> *payload
[13:07] <cuddykid> yeah, it took me 2 years to get all the equip and prepair
[13:08] <Jessica_Lily> I'll most likely try and do as much analogue electronics as I can with only a bit of microcontroller
[13:08] Action: Jessica_Lily loves analogue electronics
[13:09] <Jessica_Lily> playing around with op-amps, mosfets, capacitors, inductors, etc..
[13:09] <Jessica_Lily> all lots of fun ^_^
[13:09] <cuddykid> haha
[13:11] <Jessica_Lily> I gotta find a neat way to detect free radicals
[13:11] <cuddykid> Jessica_Lily: what year are you in at uni?
[13:11] <Jessica_Lily> cuddykid: first
[13:11] <Jessica_Lily> you?
[13:11] <cuddykid> same
[13:11] <Jessica_Lily> cool :)
[13:11] <Jessica_Lily> what uni?
[13:11] <cuddykid> nottingham
[13:11] <Jessica_Lily> ooo cool
[13:11] <cuddykid> (not trent)
[13:12] <NigeyS> i'm in my 32nd year at the university of life, if that counts :p
[13:12] <cuddykid> lol NigeyS
[13:12] <NigeyS> ;)
[13:12] <Jessica_Lily> :P
[13:13] <Jessica_Lily> i doubt im going to pass this year
[13:13] <Laurenceb> heh not trent
[13:13] <Laurenceb> thats reassuring
[13:13] <cuddykid> Laurenceb: always have to mention that ;)
[13:13] <NigeyS> to many first year drunken nights? :p
[13:13] <Jessica_Lily> too much quantum mechanics
[13:13] <Laurenceb> yeah chemistry a level was mental
[13:13] <cuddykid> NigeyS: quite a few haha
[13:13] <Laurenceb> harder than everything else i did put together
[13:14] <cuddykid> yep - further maths was easier than chem
[13:14] <Jessica_Lily> if i see schrodingers equation or even see his stupid glasses i will throw a shoe at someone
[13:14] <Jessica_Lily> xD
[13:14] <Laurenceb> the books weighed more than all my other subjects too :P
[13:14] <Jessica_Lily> I should show you folks a picture of one of my first year textbooks
[13:14] <Jessica_Lily> its like huge :P
[13:16] <NigeyS> <--------------------------------------------------------> ? bigger?
[13:16] <Jessica_Lily> errr
[13:16] <Jessica_Lily> hold on
[13:16] Action: Jessica_Lily gets book
[13:16] <Jessica_Lily> no smaller :P
[13:16] <Jessica_Lily> font dependent
[13:16] <Jessica_Lily> xD
[13:17] <NigeyS> hehe
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[13:23] <Jessica_Lily> ^_^
[13:23] <Jessica_Lily> I missed two days of uni this week
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[13:29] Nick change: number10_ -> number10
[13:30] <BrainDamage> do you actually solve the schroedinger equation for the wavefunction, or you just get the premade solutions?
[13:31] <BrainDamage> also $$ i\hbar\frac{\partial}{\partial t} \Psi = \hat H \Psi $$
[13:31] <Jessica_Lily> -.-
[13:32] <Laurenceb> BrainDamage: numerically
[13:32] <Laurenceb> there are a few solutions, e.g. hydrogen atom
[13:32] <Jessica_Lily> BrainDamage: we solve it in computational labs but when we use it for just understanding stuff we get premade stuff
[13:32] <Laurenceb> but usually not
[13:33] <Jessica_Lily> Li+2
[13:33] <BrainDamage> Laurenceb: I calculated the hamiltonian & wavefunction myself for few elementary systems in a course
[13:33] <Jessica_Lily> :P
[13:33] <BrainDamage> I still have nightmware of the biatomic molecula
[13:33] <Laurenceb> numerically?
[13:33] <BrainDamage> no, closed form analithically
[13:33] <Laurenceb> interesting
[13:34] <BrainDamage> but I tought that Jessica_Lily was at first year
[13:34] <BrainDamage> hence why I was surprised
[13:34] <Laurenceb> i didnt know you could do it for much more than hydrogen
[13:34] <BrainDamage> you have to take some approximations
[13:34] <Laurenceb> ah i see
[13:34] <Laurenceb> <- physics grad
[13:34] <BrainDamage> it wasn't an exact solution
[13:35] <Laurenceb> yeah we laugh at such fudges
[13:35] Action: Jessica_Lily <- first year chem ... failing in progress
[13:35] <BrainDamage> Laurenceb: well, it's not more fudgin than numerical :p
[13:41] <nick_> Laurenceb: what do yo udo now?
[13:42] <Laurenceb> i surf the net for pr0n
[13:43] <Laurenceb> or actually im doing a phd
[13:43] <Laurenceb> supposedly
[13:44] <daveake> pr0n hunting degree?
[13:45] <Laurenceb> lol
[13:45] <Laurenceb> someone somewhere is doing that degree im sure
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[13:47] <NigeyS> mememe
[13:48] <cuddykid> Laurenceb: are you permanently in notts?
[13:48] <Laurenceb> pretty much yes
[13:48] <Laurenceb> sometimes i lurk in tower building
[13:48] <cuddykid> cool :)
[13:48] <cuddykid> lol
[13:48] <gonzo_> I used to think that people were joking when they said that 90% of internet use was porn, but if you watch a network, that's depressingly true
[13:50] <Laurenceb> http://www.asymco.com/2012/01/17/the-rise-and-fall-of-personal-computing/
[13:51] <gonzo_> The other 10% I suppose is youtube thesedays
[13:51] <BrainDamage> the other 10% is cats
[13:52] <fsphil> ninja cats
[13:53] <SamSilver_> daveake: 5 of 5 will be out when?
[13:53] <daveake> At the weekend, I'm told. Mind you he said that a month ago about these two :)
[13:54] <SamSilver_> ok
[13:54] <daveake> UPU is famous again :p
[13:54] <number10> what for this time
[13:55] <daveake> IRC chat in one of the cloud1 videos. Did you see my links earlier?
[13:55] <daveake> Those videos remind me of how little I knew what I was doing :D
[13:56] <number10> non did not I'll take a look back
[13:56] <number10> where did that n come from
[13:56] <daveake> http://www.youtube.com/watch?feature=player_embedded&v=W_jP26YH020
[13:57] <daveake> and http://www.youtube.com/watch?feature=player_embedded&v=fYXrhCh4qlQ
[13:58] <daveake> Friend of mine Andrew took a video of the launch and chase. He's put that plus some onboard footage together as 5 videos, 4 of which are on YT now. He even composed some music for them.
[13:58] <number10> nice - i'll have a look
[14:12] <number10> slightly fewer people on the buzz flight
[14:14] <daveake> Yeah, lazy buggers :)
[14:14] <daveake> Should have a few next time though.
[14:15] <number10> is everything all set on cloud3?
[14:17] <daveake> Very nearly. Need to wire up the cutdown and put the code for that back in, mount the GPS/buzzer/LED in the payload box, and order the helium.
[14:17] <gonzo_> watching hab on youtube is of course acceptable use of bandwidth
[14:17] <daveake> :)
[14:19] <gonzo_> when I'm fuhrer, there will be a 'thought police'. they will police that people think. So youtube videos of cats will be banned!
[14:20] <gonzo_> Non thinking will be punishable by doing vector algebra
[14:25] <nick_> Laurenceb: what are you doing your PhD on?
[14:25] <Laurenceb> medical electronics - flowmeters
[14:26] <UpuWork> famous again ? Me why ?
[14:26] <fsphil> daveake, did you see this? http://www.youtube.com/watch?v=o-265xTz2zA
[14:26] <SpeedEvil> still optical velocimetry?
[14:27] <Laurenceb> nope
[14:27] <nick_> For blood, or something?
[14:28] <Laurenceb> yes
[14:29] <daveake> UpuWork See http://www.youtube.com/watch?feature=player_embedded&v=W_jP26YH020 - you're in the IRC chat near the start of the video
[14:30] <UpuWork> lol
[14:30] <UpuWork> good flight that
[14:31] <daveake> fsphil - saw that mentioned on the stargazing programme this week
[14:31] <fsphil> that's where I seen it too
[14:31] <daveake> UpuWork I've had a desktop upgrade since then - another 2 monitors added today :)
[14:31] <fsphil> that'll be hard to beat
[14:33] <daveake> Buzz helping me with cloud3 ... http://www.flickr.com/photos/daveake/6696342101/in/set-72157628868749177/
[14:34] <daveake> By 'eck 'es a strong lad
[14:36] <number10> did I not see minature buzz inside cloud1?
[14:38] <daveake> Yep :)
[14:38] <daveake> https://www.facebook.com/photo.php?fbid=10150235844402654&set=oa.162331553835216&type=1&theater
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[15:03] <number10> ah not a stowaway then
[15:04] <gonzo_> i did some work on medical bubble in flow measurement
[15:04] <gonzo_> part of an infusion pump
[15:07] <number10> did you have fun reading EN60601
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[15:11] <daveake> number10 No, he was invited :-)
[15:11] <number10> :)
[15:11] <number10> who is going up on cloud 3?
[15:23] <number10> interesting 3 of 5 disapeared http://www.youtube.com/watch?feature=player_embedded&v=W_jP26YH020
[15:25] <daveake> Works here still
[15:26] <daveake> Dunno "who"'s going up ... I do have a small space inside for trinkets/crew/etc
[15:32] <cuddykid> anyone following the apple eduction announcement? iBooks author looks great
[15:36] Action: UpuWork pats Apples no1 fan boi cuddykid
[15:36] <cuddykid> UpuWork: lol :P
[15:38] <number10> hey daveake I noticed a pole in one of the vids - did you manage to mount the yagi on one of those flexi fishing rod poles?
[15:39] <daveake> No, not tried. The thin end is very thin so you couldn't use the whole length
[15:41] <number10> very brittle - I pulled one of the sections out a bit to far - and tried mounting a tube on the last section, as the pole bent with the weight it slit one of the sections (I think I said this already - getting old)
[15:41] <number10> split
[15:41] <daveake> yes you did :)
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[16:13] <fsphil> I'm on the look out for a 10m telescopic pole for a yagi, one that doesn't cost too many pounds
[16:17] <g7waw> fshil is this for home or portable use
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[16:26] <fsphil> g7waw, portable
[16:27] <fsphil> I only have a little camera tripod and it's a bit rubbish
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[16:30] <g7waw> fspil thats ok 10M is quite big to put up on your own what sort of yagi are you going to use.
[16:32] <navrac_> I've got an aluminium 8m one that takes my 12 ele zl - they sell them on rbay - not as light as the fishing rod ones, but not too heavy
[16:37] <fsphil> g7waw, either a 4-el 2m one, or 2x 11-el 70cm yagi's
[16:37] <fsphil> 8m would be fine too
[16:37] <fsphil> anything more than 5m even
[16:38] <fsphil> just to get it up above any local obstructions
[16:42] <daveake> Something like this then? http://www.ebay.co.uk/itm/17FT-PORTABLE-ALUMINIUM-TELESCOPIC-MAST-/300476547322?pt=UK_ConsumerElectronics_SpecialistRadioEquipment_SM&hash=item45f5cc40fa#ht_500wt_1156
[16:43] <navrac_> http://www.ebay.co.uk/itm/LMA-M-26FT-PORTABLE-TELESCOPIC-MAST-/300532274829?pt=UK_ConsumerElectronics_SpecialistRadioEquipment_SM&hash=item45f91e968d#ht_500wt_1156
[16:45] <navrac_> thats my one - - 9 foot longer not too heavy - i welded up a bracket to attach to the bottom to drive a wheel over to hold it steady and used a strap to the roofrack as a second fixing point
[16:45] <daveake> Neat
[16:45] <fsphil> I've seen someone selling those, great idea
[16:45] <g7waw> yes that looks ok you would need a base and guys for 17ft
[16:47] <navrac_> yes you do - although the aerials arent that heavy, if you get it slightly off vertical it starts pulling like nobodies business - knackered my writ a few imes trying to hold it up
[16:47] <navrac_> wrist / times
[16:48] <daveake> Saw these things in B&Q recently which I thought might do for ground anchor - http://www.spyrabase.co.uk/index.php?p=ecom&sw=fullproduct&department=GARDEN+AND+LEISURE&productid=36
[16:48] <navrac_> didnt bother with guys unless it was gusty - and the opposite side of the roof rack plus one pegged to the ground sorts it unless its really windy
[16:49] <navrac_> I used a screw in thing which was designed to attach yuor dog lead to when you are in the park - cost me about £7 from a pet shop
[16:50] <navrac_> http://www.tent-shopibexcamping.co.uk/dog-stake--dog-anchor---blue-diamond-products-94-p.asp
[16:51] <navrac_> I was ripped off - or that may have been for two - cant remember now , probably two as I told the wife I bought them for the dogs....
[16:52] <daveake> So those are for the guy lines? The one I linked to was suitable I thought for putting the pole in.
[16:53] <daveake> I bought my wife a Samsung Tab but I think she knows I got it for running spacenear.us in the chase car :p
[16:53] <navrac_> oh right - got you, I used the car wheel so assumed you meant for the guys - but yes - would work well
[16:54] <navrac_> yeah i bought a small laptop which I had to say was for her - I havent been able to get at it since
[16:54] <daveake> :)
[16:54] <navrac_> yep, i was sussed.
[16:56] <navrac_> but i'm happy today - my prototype pcb for my RFM/Battery/diff pressure/psu's/gps shield for the arduino mini pro works - well apart from the gps chip as it hasn't arrived yet
[16:57] <daveake> Sheild for the mini pro? How tiny is the shield? :)
[16:57] <navrac_> although smd oldering on a homemade pcb is my current definition of hell
[16:57] <daveake> I bet
[16:57] <navrac_> err the shield is about 4x the size of the mini pro!
[16:57] <navrac_> 38mmx65mm I think
[16:57] <daveake> ah lol
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[16:58] <navrac_> sadly the only pcb material i had was 1.6mm thick and the pcb weighs more than everything else put together except the battery
[16:59] <LazyLeopard> Ummm...
[16:59] <navrac_> even has battery clips for the AAA though and includes a crystal over as well for the pressure sensor
[17:00] <navrac_> but i guess it could be called a holder for the minipro rather than a shield
[17:01] <daveake> :)
[17:02] <navrac_> 25g inc battery for the complete payload - should be sub 20 with 0.5mm pcb
[17:03] <navrac_> could probably cut another 2g of if i have it pro made - the spacings were generous as I havent etched a pcb for 32 years
[17:16] <navrac_> oh FFS. just checked my email to find the order for the gps chips so I could chase them - to find I'd missed an email saying that they needed me to fill in a form to get authorisation for export to the UK- trouble is the gps is from a British firm, they only have stockist in the USA though.
[17:17] <navrac_> and to add insult to injury they forgot to attach the form
[17:17] <Laurenceb> http://www.theregister.co.uk/2012/01/19/the_choking_game/
[17:17] <Laurenceb> pmsl
[17:24] <x-f> natural selection will deal with them
[17:28] <nick_> Is this like the vodka tampon story?
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[17:55] <eroomde> Laurenceb: success!
[17:57] <eroomde> Laurenceb: with the datasheet and some coffee and ST's startup.s code, I have got an led to blink using timer interrupts
[17:57] <eroomde> and therefore the toolchain and stlink all working
[18:00] <BrainDamage> which discovery?
[18:00] <BrainDamage> vl, l, or f4?
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[18:02] <daveake> I wonder if there's a name for the point you get to where, when you want to know the time, the first place you look is the rttty stream from your payload under test
[18:03] <eroomde> BrainDamage: F4
[18:04] <BrainDamage> the dsp is super awesome
[18:04] <eroomde> daveake: time-for-a-holiday time
[18:04] <daveake> :)
[18:04] <eroomde> BrainDamage: i've not properly tried it yet
[18:04] <eroomde> but i am excited
[18:04] <eroomde> have you used cmsis at all?
[18:04] <eroomde> arm's dsp lib
[18:04] <eroomde> a bunch of dsp routines optomized for the m4 and its fpu - FIR, IIR, FFT, matrix operations etc
[18:05] <BrainDamage> nope, I procrastinated that a bit
[18:05] <BrainDamage> only custom code
[18:08] <eroomde> so, at the moment i am register bashing to set all the peripherals/timers etc up
[18:08] <eroomde> is this the accepted way to do it or is there some preferred more abstracted library?
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[18:11] <BrainDamage> there are a few actually
[18:11] <BrainDamage> the problem is usually the license
[18:11] <BrainDamage> if you're ok with gpl, libopencm3 is nice
[18:11] <BrainDamage> ST itself has libs, but they are quite bad
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[18:14] <eroomde> BrainDamage: thanks for the tip
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[18:33] <fsphil> thanks for the links navrac n' daveake
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[19:04] Nick change: daveake_ -> daveake
[19:07] <number10> its called habsession daveake
[19:07] <daveake> :D
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[19:09] <daveake> It's a hard habit to break
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[19:39] <Lunar_Lander> hello
[19:40] <SpeedEvil> hello
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[19:49] <jcoxon> evening
[19:49] <Lunar_Lander> hello
[19:52] <bfirsh> hello!
[19:52] <bfirsh> who looks after ukhas.org.uk now?
[19:52] <jcoxon> its on the habhub.org server
[19:52] <NigeyS> evening james
[19:52] <jcoxon> so pop onto #habhub
[19:52] <bfirsh> domain is up for renewal in a couple of months
[19:53] <bfirsh> thought somebody else might want to take the reigns in case I get hit by a bus
[19:53] <Lunar_Lander> hello NigeyS
[19:53] <jcoxon> bfirsh, always a risk
[19:53] <NigeyS> hey kev
[19:53] <jcoxon> ben email the mailing list
[19:53] <jcoxon> it'll be easy to follow there
[19:53] <NigeyS> grr brb
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[19:55] <Lunar_Lander> what was the habhub domain again?
[19:56] <Lunar_Lander> org.uk?
[19:56] <jcoxon> ,org
[19:56] <jcoxon> .org*
[19:56] <Lunar_Lander> just org?
[19:56] <jcoxon> yup
[19:56] <Lunar_Lander> thanks
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[19:59] <navrac> hi jcoxon - ignore my email ref the antenova - they changed their minds and i just needed an end user certificate
[20:00] <Lunar_Lander> I got a question
[20:00] <Lunar_Lander> did anyone watch the Brian Cox lecture on Dec. 18 on BBC2?
[20:00] <Lunar_Lander> was called "a night with the stars"
[20:00] <jcoxon> hehe
[20:00] <jcoxon> i just replied
[20:01] <zyp> I got some antenovas in the mail today
[20:01] <jcoxon> zyp, impressive aren't they
[20:01] <jcoxon> zyp, where did you order from?
[20:01] <zyp> digikey
[20:01] <jcoxon> US digikey?
[20:01] <zyp> yes, shipped to norway with no hassle
[20:02] <jcoxon> we really need a europe supplier
[20:02] <jcoxon> considering they are UK based
[20:02] <navrac> i got an email claiming it was a nicrowave module and fell foul of the new export regs introduced on jan 9th
[20:02] <jcoxon> zyp, where abouts in norway are you?
[20:02] <zyp> *NOTE: ONE OR MORE ITEMS ON THIS ORDER ARE CONTROLLED FOR EXPORT.
[20:02] <zyp> These commodities, technology or software were exported from the United States in accordance with the Export Administration regulations.
[20:02] <zyp> south coast
[20:02] <jcoxon> so if we launch a balloon towards you you could track it?
[20:03] <zyp> if I had a radio I probably could
[20:03] <navrac> swap you 3 antenovasfor a radio!
[20:04] <zyp> I only got 3 :p
[20:04] <jcoxon> when the winds return to normal are payload will come towards you
[20:04] <navrac> oh well, I'll wait some more - my boards all finished and working - apart from the gap where the antenova goes
[20:05] <zyp> did you try digikey?
[20:06] <navrac> ordered early last week, just didnt see their email they sent about the export regs -its all sorted now, i pointed out it wasnt a 'high power amplifier or device ' and was below 2.7ghz so i just had to sign a simle form - so early nextr week now
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[20:07] <navrac> i got free delivery with mouser - and i could remember the mouser account details, but cant remember the digikey account details
[20:08] <zyp> I got a free delivery with digikey aswell, ordered tuesday, got it today
[20:08] <zyp> <48h
[20:08] <zyp> I don't call that bad, going from US to Norway
[20:08] <navrac> oh great.
[20:08] <navrac> there must be less terrorists in Norway then
[20:09] <zyp> I'll probably don't have the boards to put the parts on until march or so though
[20:09] <zyp> I've barely started designing it
[20:09] <navrac> Is there a particular part of the year when the winds go atlanticward?
[20:10] <jcoxon> depends what altitude you mean
[20:10] <navrac> zyp- I decided not to wait for the pcb manuf and got the ferric chloride out and had a go at etching my own
[20:10] <jcoxon> so the Jetstream pretty much always goes west to east
[20:10] <navrac> well at 20k+
[20:11] <jcoxon> so the high alt winds currently go west-east
[20:11] <jcoxon> however they reverse in the summer
[20:11] <zyp> navrac, I'm intending to do a four layer board, so I'll rather not :)
[20:11] <jcoxon> and go east west
[20:11] <jcoxon> however they aren't particularly fast
[20:12] <daveake> My first flight was in the summer and did that - went east initially, then reversed at higher altitudes
[20:12] <navrac> err yep, that would be a little tricky. I got my whole thing onto 1 layer with only one link, i didnt trust myself to be able to line the two sides up
[20:12] <Lunar_Lander> xD "In the greatest city known to civilization, which is Manchester"
[20:12] <Lunar_Lander> :D
[20:12] <Lunar_Lander> (says brian cox)
[20:13] <navrac> I want to do a couple of fast ups and bursts with 500g balloons and want to be able to recover the payload if possible
[20:14] <zyp> lining the sides up are easy
[20:14] <jcoxon> navrac, summer is better
[20:14] <zyp> I've done quite a few two layer boards myself
[20:15] <zyp> though, I've had access to a dual sided UV box in each case
[20:15] <Laurenceb_> haha brian cox
[20:15] <Lunar_Lander> xD
[20:18] <navrac> well since im rather coast to the east coast i might just do a copy of disposable payloads for fun till the summer.
[20:19] <navrac> close not coast
[20:19] <navrac> copy=couple
[20:20] <navrac> eating and typing and talking to the wife is tricky
[20:22] <jcoxon> navrac, are you planning to get permission for where you live?
[20:23] <navrac> yep, theres a barn and a nice open field opposite so i can inflate out the wind and get a clean release
[20:23] <jcoxon> cool
[20:23] <jcoxon> get requesting now then
[20:23] <jcoxon> takes a while
[20:28] <navrac> i need a while - a lot of 'cash in hand' jobs have arrived in to fill my evenings and weekends
[20:35] <jcoxon> fair enough
[20:35] <jcoxon> don't need permission for a foil balloon launch
[20:36] <jcoxon> but they won't go too high :-p
[20:37] <jcoxon> bbl
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[20:38] <navrac> i didnt know that - thats interesting - i thought you needed permission for picos
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[21:21] <SpeedEvil> Laurenceb: Do you have any sources that you like for random optical parts - lenses/mirrors/... - if ebay doesn't cut it.
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[21:33] <NigeyS> SpeedEvil, you could try some of the big astronomy forums, they often have old / used telescopes in a buy / sell forum
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[21:35] <SpeedEvil> I mean if I want a 100mm focal length 30mm diameter lens, for example
[21:35] <SpeedEvil> I suppose there is edmund
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[21:41] <Lunar_Lander> hello andrew_apex
[21:41] <andrew_apex> hi Lunar_Lander
[21:42] <Lunar_Lander> how are you today?
[21:44] <andrew_apex> not too bad thanks - you?
[21:44] <Lunar_Lander> same here
[21:44] <fsphil> evenin' all
[21:44] <Lunar_Lander> the thing is only that the laptop I borrowed from uni doesn't allow me to install the FTDI drivers
[21:44] <Lunar_Lander> i have to ask there tomorrow
[21:45] <Lunar_Lander> hi fsphil
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[22:33] <Lunar_Lander> NigeyS: still on?
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[23:20] <Lunar_Lander> hello Zuph
[23:20] <Zuph> Hey Lunar_Lander
[23:20] <Zuph> How's it been?
[23:21] <Lunar_Lander> I'm good, thanks and you?
[23:22] <Zuph> Doing well. Working on this Satellite Shield for white star.
[23:23] <Lunar_Lander> sounds good
[23:23] <Lunar_Lander> for the Orbcomm?
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[23:25] <Zuph> Lunar_Lander: Nope, Iridium
[23:25] <Lunar_Lander> ah
[23:26] <Lunar_Lander> did you switch providers?
[23:26] <Tom25> Hi guys, got a question. Just read the ntx2 arduino guide, ordering in the ntx2 and resistors (already got arduino plus breadboard). Firstly, im not going to put a breadboard to near space, how should i wire it up when its complete? And how do i get it to transmit gps info (assuming ive got a gps unit attatched, obviously-which do you recommend?)
[23:27] <Lunar_Lander> hi Tom25
[23:27] <Lunar_Lander> I am currently at the first stage of your question
[23:27] <Lunar_Lander> I got some, I think it's called veroboard, and there I would solder the circuit like it is in the tutorial
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[23:28] <Tom25> So I should buy some veroboard?
[23:28] <Lunar_Lander> I would say yes
[23:29] <fsphil> the ntx2 will be wired to the arduino using those resistors. it's the arduino's job to interpret what the GPS is saying into a format that can be transmitted over the radio
[23:30] <Tom25> Just looked, http://www.bitsbox.co.uk/hardware.html#stripboard 25p!
[23:31] <Lunar_Lander> yea
[23:31] <Tom25> Sorry, i meant code-wise
[23:31] <Lunar_Lander> thing is that the breadboard circuit tends to be unreliable
[23:31] <Lunar_Lander> sometimes I connect the arduino to the PC and there would be no broadcast at all
[23:31] <Tom25> Meaning the stripboard or the breadboard in the guide?
[23:31] <Lunar_Lander> the guide
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[23:31] <Lunar_Lander> I think when it is soldered properly then it should be much more reliable
[23:32] <Tom25> Oh excellent, thanks for the advice-never heard of veroboard!
[23:32] <Lunar_Lander> you're welcome
[23:32] <Lunar_Lander> thing is that I would say that those strips are similar to the "lines" of a breadboard
[23:33] <Lunar_Lander> if you want to "simulate" the breadboard fully, you would have to remove one line on the copper side
[23:33] <Lunar_Lander> you know how I mean?
[23:34] <Tom25> You mean cut off part of the stripboard (1 line) - im not understanding what youre usage of simulate sorry :/
[23:35] <Tom25> (ignore that "what"? Typo!)
[23:36] <Lunar_Lander> OK
[23:36] <Lunar_Lander> the breadboard has those "lines" with the gap in the middle
[23:36] <Lunar_Lander> right?
[23:36] <Tom25> Looking at them :)
[23:36] <Lunar_Lander> yes
[23:37] <Lunar_Lander> and when you want to break a connection on a stripboard, you have to scrape off the copper
[23:37] <Lunar_Lander> so what I mean is, if you want to have a electrical gap just as on the breadboard, you have to scrape off one line perpendicular to the copper strips
[23:38] <Tom25> To stop shortcircuits etc, so you can wire it up like a breadboard?
[23:39] <Lunar_Lander> yes
[23:39] <Lunar_Lander> I have to say that the radio circuit will be the first thing I'll do with stripboard
[23:39] <Lunar_Lander> so I only found it logical to imitate a breadboard setup
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[23:42] <Tom25> Seems like a good idea
[23:42] <Lunar_Lander> yea
[23:42] <Lunar_Lander> as I said, when I construct the circuit on the breadboard, I sometimes plug it back in the next day and it won't work
[23:42] <Lunar_Lander> then I take it apart and build it up anew and it would work again
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[23:42] <Lunar_Lander> this is most probably because of bad contacts
[23:43] <Lunar_Lander> also breadboards have rather high capacitances
[23:43] <Lunar_Lander> (I was told at least)
[23:46] <Tom25> This is a bit of a stupid question, but looking at this http://ukhas.org.uk/_detail/frontpage:guides:ava--ntxhowto5.jpg?id=guides%3Alinkingarduinotontx2. -- my breadboard isnt identical to the guides breadboard, how do i know where to out each component to complete the circuit? I cant really see a pattern :/
[23:46] <Lunar_Lander> in what way is your breadboard different?
[23:48] <Tom25> In size - sorry I wasn't being too clear, it looks like this http://www.ladyada.net/images/parts/breadboard-half.jpg
[23:49] <Tom25> I meant mire in general though, not that specific circuit
[23:49] <Lunar_Lander> ah
[23:50] <Lunar_Lander> well, that breadboard is just a half-sized version of the one in the tutorial
[23:50] <Lunar_Lander> also it has the markings for where the positive and the negative lines are
[23:50] <Lunar_Lander> can you see the numbers on the breadboard in the tutorial?
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[23:51] <Tom25> Just about enough to see coordinates of components
[23:51] <Lunar_Lander> yes
[23:51] <Lunar_Lander> I found that you can take these numbers as a guide
[23:52] <Lunar_Lander> i.e. that the gray cable there must be on line 11
[23:52] <Tom25> Row F
[23:52] <Lunar_Lander> F should be a column
[23:53] <Tom25> My bad, pictures sideways!
[23:53] <Lunar_Lander> yea
[23:53] <Lunar_Lander> no problem :)
[23:54] <Tom25> See I can copy the coordinates onto my breadboard, but when it comes to attatching the gps to the stripboard, where do i put it?
[23:55] <Tom25> Its not in the guide, so how would i work it out?
[23:55] <Lunar_Lander> AH
[23:55] <Tom25> Thats where im confused!
[23:55] <Lunar_Lander> that is the thing, the GPS would be next on the list
[23:55] <Lunar_Lander> and there is where I haven't got yet
[23:56] <Tom25> Oh ok, but do you know how one would even if you havent yet?
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[23:57] <Tom25> It seems so simple but its stumped me during my research - its sort of skipped over in the wiki.
[23:57] <Lunar_Lander> yea
[23:57] <Lunar_Lander> I think the GPS gets connected to the arduino as well
[23:58] <Lunar_Lander> but that would be it
[23:58] <Lunar_Lander> someone else would have to help
[00:00] --- Fri Jan 20 2012