highaltitude.log.20130212

[00:03] <arko> woah nice
[00:03] <arko> where did it end up?
[00:04] <Lunar_Lander> hi MrCraig
[00:04] <MrCraig> arko, it ditched in the English channel.
[00:04] <MrCraig> Hi Lunar :)
[00:05] <arko> woah wait what? where did you launch?
[00:05] <arko> the US?
[00:05] <MrCraig> Churchill site in cambridge... no, had it made it to the English channel from the US that would be seriously impressive.
[00:05] <MrCraig> lol
[00:05] <arko> yeah i was like wow man
[00:05] <arko> awesome accident
[00:06] <arko> very cool
[00:07] <MrCraig> yeah - sadly, it was a payload that had misbehaved previously and an opportunistic flight attempt while I was in the UK. It was high risk from the start and didn't quite achieve it's goal... but oddly I enjoyed it even more than the previous flight... "is it going to give us another GPS fix? Yes! There it is! No wait, it's gone again..." lol
[00:08] <MrCraig> There's a marginal chance that it'll wash up on shore somewhere either side of the channel and that the phone number on the side will be intact, but I don't hold out much hope.
[00:08] <arko> haha, at least it was entertaining
[00:08] <MrCraig> oh it was certainly that :)
[00:09] <MrCraig> I doubt I'll do another UK hab, I don't live there and the risks are higher in strong winds. I'll definately launch out of Texas though.
[00:10] <arko> heh, yeah, at least your hab will blow over east to flat land
[00:10] <arko> launching from the mohave sucks
[00:10] <MrCraig> even if it goes south it'll have 13 hours or so of space before the gulf :)
[00:10] <arko> hah ya
[00:11] <MrCraig> jcoxon made what I can only see as the best estimate of the tracking problems I saw. It looks like the MCU got a little too cold and using the internal oscillator for timing was therefore a mistake.
[00:11] <MrCraig> Lesson learnt.
[00:12] <Randomskk> real pity about the ascent rate though
[00:12] <arko> did you insolate it?
[00:12] <Randomskk> oh well. we had a lot of fun ;D
[00:12] <MrCraig> Hi Adam, yes, a real shame.
[00:12] <jonsowman> hi MrCraig
[00:12] <jonsowman> just replying to your email
[00:12] <MrCraig> Agreed - hi jon :)
[00:12] <Randomskk> http://youtu.be/jxjrEcv9Nss
[00:12] <jonsowman> there you go
[00:12] <Randomskk> bit of video from the chase ^
[00:13] <MrCraig> Yes - I almost preferred the excitement of this flight. The errors happening on the tracking device gave us some real excitement. I'd almost be tempted to program in a couple of black-spots to the next flight!
[00:13] <jonsowman> haha
[00:13] <Randomskk> haha it does add excitement!
[00:13] <arko> hahaha
[00:14] <Randomskk> ben made that video ^, it's pretty cool
[00:14] <MrCraig> http://youtu.be/vokq30KCMTo <-- excuse my friends language in excitement.
[00:14] <arko> very cool video
[00:14] <arko> did you guys drive into a train?
[00:14] <arko> i dont get it
[00:14] <Randomskk> yup!
[00:14] <Randomskk> from england to france
[00:14] <Randomskk> the channel tunnel
[00:14] <Randomskk> under the sea ;D
[00:15] <MrCraig> this video is kool too, gonna add that to the blog
[00:15] <arko> nice
[00:15] <mattbrejza> they have car trains to go thru the swiss alps too
[00:16] <Randomskk> there's another undersea one in japan too
[00:16] <arko> neato
[00:16] <jonsowman> pretty weird, driving onto a train
[00:17] <mattbrejza> double decker train too
[00:17] <Randomskk> cool though
[00:17] <jonsowman> yep
[00:18] <Cillian> Mhm
[00:18] <Cillian> They can take double decker coaches onboard
[00:18] <Cillian> insane
[00:18] <Randomskk> my shopping after the payload hit the sea ;) https://www.dropbox.com/s/f49jj735oa6her5/2013-02-09%2016.24.00.jpg
[00:18] <Cillian> Randomskk: Woo sheep cheese :3
[00:18] <arko> the payload would have wanted it
[00:19] <Randomskk> perfect HAB payload landing terrain: https://www.dropbox.com/s/9vq0cye5hqup0i5/2013-02-09%2014.16.49.jpg
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[00:20] <MrCraig> sweet - Not getting duty free shopping would have been my only regret, were it not for the flight home :-) Bottle of Jura will do nicely thanks :)
[00:20] <Randomskk> hehe nice
[00:21] <jonsowman> :D
[00:21] <Randomskk> sadly no duty free for me as it's all EU
[00:21] <Randomskk> but even full price french wine is a pittance
[00:21] <Cillian> Yeh, UK alcohol tax is a lot
[00:22] <MrCraig> no duty free on the chunnel - wow, but cheap wine is a bonus.
[00:23] <Randomskk> yup, no fancy perfumes or spirits, but, well, when wine is ¬3 a bottle you can't complain :P
[00:24] <Cillian> The question is whether it's decent wine :p
[00:24] <jonsowman> the one we had yesterday was lovely
[00:24] <jonsowman> and I think that was one of the cheaper ones?
[00:24] <Randomskk> and that was the cheaper and newer
[00:24] <Randomskk> indeed
[00:24] <Randomskk> bodes well for the rest
[00:24] <MrCraig> Anyone have an issue with me re-using the image of Adam from behind holding a Yagi with the CUSF logo on his back? (There's some license stuff against the creative-commons on flickr)
[00:25] <Randomskk> jon's photo I believe
[00:25] <jonsowman> yeah that's fine
[00:25] <Randomskk> though the CC license on it just says "you must attribute jonsowman"
[00:25] <Randomskk> which is pretty permissive as it goes :P
[00:25] <MrCraig> lol indeed.
[00:26] <jonsowman> though if it's this one, it's Randomskk's: http://www.flickr.com/photos/randomskk/8461521356/in/set-72157632730288997
[00:26] <Randomskk> technically also jonsowman's, as you can see I'm clearly not taking the photo
[00:26] <MrCraig> t'was this one
[00:26] <jonsowman> haha, true
[00:26] <Randomskk> perhaps I should change the license on that >.>
[00:26] <MrCraig> lol - I'll attribute you both
[00:27] <jonsowman> haha I don't really care
[00:27] <Randomskk> "sharealike" just means if you modify it, the modified version must also be shared under a creative commons license
[00:27] <Randomskk> but yea
[00:27] <Cillian> If you take the photo on a timer does that mean Canon own the license? :P
[00:27] <MrCraig> lol
[00:27] <jonsowman> hmm
[00:27] <Randomskk> if you're using it for commentary on a blog post you're covered under your own country's fair use doctrine anyway :P
[00:27] <Randomskk> Cillian: nah, still your own
[00:27] <Randomskk> I understand the case law is well established
[00:28] <Randomskk> same if my computer takes a photo on timelapse :P
[00:28] <MrCraig> it is for commentry on a blog :- Figured you'd not mind the negligable publicity of the CUSF logo.
[00:28] <Randomskk> oh definitely, not that we can control its use in photographs anyway
[00:28] <Randomskk> please feel free to plug CUSF as much or as little as you want :P
[00:28] <Randomskk> (jonsowman: clearly we should (tm) the logo)
[00:29] <jonsowman> :)
[00:29] <nigelvh> Charge a nickel for every pageview
[00:29] <Randomskk> hehe
[00:29] <Randomskk> make my fortune overnight right
[00:29] <jonsowman> *CUSF's
[00:29] <MrCraig> this is my blog, it's not going to make anyone any fortunes.
[00:29] <MrCraig> lol
[00:30] <Randomskk> right, CUSF's, slip of the tongue
[00:30] <jonsowman> you never know, reddit/slashdot occasionally pick up on these things and everyone goes mental about it for a while
[00:30] <jonsowman> then forget about it for 6 months, then rinse/repeat
[00:30] <MrCraig> although, I was pleased recently to be told by LinkedIn that my profile was in the top 10% of profiles viewed in 2012.... that's in the top 60 million profiles.
[00:30] <Randomskk> hah, sneaky of them
[00:31] <MrCraig> yeah, but I'll still bost it when my portfolio site is back up to speed. :-)
[00:33] <Randomskk> hehe
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[00:35] <arko> link?
[00:37] <MrCraig> link for what arko?
[00:37] <arko> portfolio
[00:37] <MrCraig> oh, the portfolio I just put back up and it contains nothing of interest http://craigchapman.me.uk the habbing blog is at http://chapmanworld.com
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[00:39] <arko> nice!
[00:39] <arko> site design is nice too
[00:39] <MrCraig> Wish I could take credit, it's my favorite template for wordpress
[00:39] <arko> lol
[00:40] <arko> i tend to get templates and mod the crap out of them
[00:40] <arko> much easier anyway
[00:40] <MrCraig> I used to, but then I gave up trying to find time to get them right and just started selecting the closest to what I want.
[00:41] <MrCraig> This one in particular I liked because of the image slide-show across the top - it takes up a bit of screen estate and makes it all look prettier than just a textual bog post.
[00:41] <arko> yeah
[00:42] <arko> out of curiosity, where does CU stand in difficulty of getting in?
[00:42] <arko> MIT, Caltech?
[00:42] <arko> UCLA, USC?
[00:42] <MrCraig> I have no clue, I never went to CU - but plenty in this channel did :-)
[00:42] <arko> heh, hey people!
[00:43] <Randomskk> arko: uhm
[00:43] <Randomskk> department?
[00:43] <Randomskk> EE?
[00:43] <arko> EE
[00:43] <arko> or aerospace
[00:43] <Randomskk> postgrad?
[00:43] <arko> grad
[00:43] <Randomskk> right
[00:43] <arko> im undergrad at the moment
[00:43] <Randomskk> it's all "engineering" anyway
[00:43] <arko> right hah
[00:43] <Randomskk> postgrad means "after undergraduate" here
[00:43] <Randomskk> as in "post graduation"
[00:43] <arko> ah gotcha
[00:43] <Randomskk> vs postdoc for post-doctoral
[00:43] <Randomskk> but yea
[00:43] <Randomskk> uhm
[00:43] <arko> 0-4.0 gpa scale?
[00:43] <Randomskk> we don't do GPA
[00:44] <arko> oh?
[00:44] <Randomskk> MIT, Caltech is probably about comparable in terms of level of skill required, but I don't know about applicant level
[00:44] <arko> ok, wow
[00:44] <Randomskk> I'll let you know in a couple weeks
[00:44] <arko> i'll have to cross my fingers when applying then
[00:44] <Randomskk> I'm applying to MIT and Cambridge for a PhD :P
[00:44] <arko> did you apply?
[00:44] <arko> nice!
[00:44] <arko> good luck!
[00:44] <Randomskk> thanks!
[00:44] <jonsowman> you applying to CU arko?
[00:45] <arko> want to
[00:45] <Randomskk> he totally should, right jonsowman
[00:45] <arko> its on my list
[00:45] <Randomskk> you could join CUSF
[00:45] <jonsowman> definitely
[00:45] <arko> :)
[00:45] <arko> obviously would :P
[00:45] <jonsowman> you'd not have a choice
[00:45] <arko> haha
[00:45] <Randomskk> jonsowman: any better idea where cambridge stands compared to other unis for postgrad engineering?
[00:45] <jonsowman> certainly none outside the UK
[00:45] <arko> MIT and Caltech are the hardest to get into here
[00:45] <arko> Harvey Mudd and Olin as well
[00:46] <Randomskk> arko: looking for masters or PhD?
[00:46] <jonsowman> I get the feeling that MIT and CU are fairly evenly matched
[00:46] <arko> i have a 3.7 and loads of experience
[00:46] <jonsowman> but I've nothing to back that up particularly
[00:46] <arko> masters likely
[00:46] <Randomskk> ah okay, that might be so ahrd
[00:46] <arko> yeah, i think it's difficult do compare
[00:46] <arko> to*
[00:46] <jonsowman> yeah
[00:46] <Randomskk> over the whole university, two years ago 6800 people applied for a masters and 1446 got in
[00:47] <Randomskk> 3600 for a PhD and 889 got in
[00:47] <arko> oh
[00:47] <Randomskk> http://www.admin.cam.ac.uk/univ/camdata/postgraduate.html
[00:47] <arko> wow, thats fantastic
[00:47] <Randomskk> which is probably smaller than MIT or Caltech?
[00:47] <Randomskk> I'm not really sure
[00:47] <jonsowman> mm, numbers
[00:47] <Randomskk> but that's over all departments -- engineering, chemistry, physics, maths, english, history, art, music, ...
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[00:48] <Randomskk> oh hang on
[00:48] <Randomskk> they have info per-course
[00:48] <Randomskk> just noticed
[00:48] <Randomskk> MPhil in Engineering was 127 applicants, 9% got in
[00:49] <arko> sounds like MIT
[00:49] <arko> damn
[00:49] <Randomskk> worth applying
[00:49] <arko> yeah
[00:50] <Randomskk> depending who you ask, around the world rankings for engineering tend to have MIT, caltech, cambridge in the top five
[00:51] <arko> yeah
[00:51] <arko> i'll just apply to all
[00:51] <arko> then frame all the rejection letters
[00:51] <Randomskk> good plan
[00:51] <jonsowman> frame all the acceptance letters you mean
[00:51] <arko> then one day when i've made billions like Wozniak, I can smoke a cigar, drink scotch, and laugh at my wall
[00:52] <jonsowman> with big red crosses in board marker across the ones you don't choose
[00:52] <arko> hahaha
[00:52] <arko> good idea
[00:52] <jonsowman> though there's less laughing at walls involved there
[00:52] <arko> true
[00:53] <jonsowman> right, bedtime
[00:53] <jonsowman> night all
[00:53] <Randomskk> nn
[00:53] <arko> night man!
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[00:53] <MrCraig> night jon
[00:53] <arko> time to go pick up eroomde at the airport
[00:53] <Randomskk> haha sweet
[00:53] <Randomskk> say hi to him for me :P
[00:53] <arko> im out too!
[00:53] <arko> will do!
[00:53] <MrCraig> take care :)
[00:54] <MrCraig> For me its almost time to begin cleaning up the mess my gf made of my apartment while I was out of town. *sigh* love her but she's not the most tidy person... still, I get to tidy up my 'lab' in the process.
[00:54] <Randomskk> tidying is theraputic :P
[00:58] <MrCraig> Well I left for England three weeks ago having just bought a bench electronics lab (one of those all in one multi-meter, bench supply, solder station units), and it's not been tested yet. I rebuilt the CNC mill with a fault (think the power supply is not high enough on the limp wristed US 110v supplies), and a new (used) radio for tracking. So I have lots of toys to start playing with when I've done the cleaning and setup my bench.
[00:58] <Randomskk> excellent
[00:58] <Randomskk> sounds like you'll be busy :P
[00:58] <Randomskk> not to mention making the aprs payload, right
[00:59] <MrCraig> of course, I have 90% of the components already
[00:59] <MrCraig> One curse I seem to have though.. shortly after Artemis-1 flight 1, my car in the UK died. I got back yesterday after flight 2 to discover that my car in the US died too ;-/
[01:00] <Randomskk> D:
[01:00] <Randomskk> that's rubbish
[01:00] <MrCraig> that's actually a significant problem in a city with very few 'side-walks' - I'm almost house bound.
[01:00] <Randomskk> I guess bikes aren't a serious suggestion either? :P
[01:01] <MrCraig> push bikes? The roads all around where I live are quite high speed, I think the slowest is 55.
[01:01] <MrCraig> and this time of year, sure - but I'd not keep up cycling into the summer months.
[01:01] <Randomskk> wow, we just call them bikes or maybe bicycles
[01:01] <Randomskk> but yea
[01:01] <Randomskk> ah, I guess it gets really pretty hot over there huh
[01:02] <MrCraig> yeah, I wasn't sure if you meant bicycle or motor-cycle
[01:02] <MrCraig> yeah, too hot to ride a bike for more than 100 yards I reccon
[01:02] <Randomskk> in cambridge bicycles are super common and everyone uses them to get everywhere, but I guess a part of that is we're all students with no cars and the climate is fairly amenable
[01:02] <MrCraig> *nods - I used to ride to work in coventry.
[01:02] <MrCraig> and walk in north london
[01:03] <MrCraig> It's unfortunate that a car is so essential out here. I can walk to the store - I'm off the edge of a neighbourhood, and the weather isn't bad right now. I can't get to work without a car though, and it's really a very short distance (10 mins walk if there were side-walks)
[01:04] <Randomskk> that sucks
[01:05] <MrCraig> yup - my first day in Dallas one of the staff took me for lunch and pointed at a guy walking outside the store - he said "We call those people, crazy"
[01:05] <Randomskk> haha
[01:05] <MrCraig> you just don't walk anywhere in summer, and avoid it by major roads in winter.
[01:06] <MrCraig> also, crossing 5 lanes of traffic in each direction with very few crossing points...
[01:06] <Randomskk> yea I don't imagine that'd be any fun
[01:06] <Randomskk> plus the drivers presumably aren't expecting pedestrians
[01:06] <MrCraig> lol - to make matters worse, the cops really are on superiority street and there are j-walking laws. You literally can get ticketed for crossing the street.
[01:07] <Randomskk> haha excellent
[01:07] <MrCraig> one thing I did notice is, in parking lots by the stores, pedestrians really know they have right of way. In england, pedestirans have the right of way but they tend to stop and look both ways, then cross when the way is clear. Here, they just walk and know that the cars around them have brakes and are entitled to use them..
[01:08] <Randomskk> sounds like a recipe for excitement, especially considering the bulk of some of your cars!
[01:09] <MrCraig> it's almost an arrogance with pedestrians here. I tend to stop and look being an ex-pat, though I do have a tendancy to look the wrong way (well they drive on the wrong damn side!)
[01:18] <MrCraig> Right - I'm off to do chores and perhaps take a walk... see you all again soon :-)
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[04:40] <arko> Woo!
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[04:42] <nigelvh> Woo?
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[04:48] <arko> At a pub with eroomde. Survived LA traffic
[04:49] <nigelvh> Fancy pants
[04:50] <arko> Haha
[04:52] <nigelvh> I'm watching south park and eating some necco wafers.
[04:52] <nigelvh> Haven't had these in forever.
[05:06] <KT5TK> Got a "Obsolete Parts Notification" for BMP085 from digikey today :(
[05:06] <KT5TK> Is there any replacement pressure sensor that can be trusted?
[05:07] <SpeedEvil> lifetime buy?
[05:08] <nigelvh> The BMP085 is convenient for size and price, but it doesn't really cover the lowest part of the range.
[05:09] <arko> KT5TK: hah me too!
[05:12] <KT5TK> Looks like there are 17,281 left. and then - that's it
[05:13] <KT5TK> The BMP085 was quite good even above 100kft
[05:14] <KT5TK> The freescale sensors had a sharp edge somewhere around 70 kft if I remember correctly
[05:14] <nigelvh> I suppose it depends on how much accuracy you need (and how much you're willing to pay for it)
[05:15] <KT5TK> what are the alternatives?
[05:15] <nigelvh> I use this: http://www.digikey.com/product-detail/en/ASDXACX015PAAA5/480-3301-ND/2178290
[05:16] <nigelvh> Vacuum referenced and linear output all the way to zero
[05:16] <nigelvh> Though more expensive.
[05:17] <KT5TK> and heavier than my complete tracker :)
[05:17] <nigelvh> That can't possibly be correct.
[05:18] <nigelvh> You can see one on one of my older (larger) boards. http://digitalnigel.com/wordpress/wp-content/uploads/2012/02/photo.jpg
[05:20] <nigelvh> I just stuck one on a scale. 2.45grams
[05:20] <KT5TK> Yeah, it looks like ~2 g. A PecanPico is around 4g
[05:21] <nigelvh> All the parts on the board is only 4g?
[05:21] <KT5TK> yes, if you don't use the SMA connector.
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[05:22] <nigelvh> I guess I use standard thickness boards, so they're a bit heavier, but my current board, with all parts, including SMA is 17.35g
[05:27] <KT5TK> This is with batteries and antennas: http://tkrahn.dyndns.org/download/PecanPico/completely_functional_PecanPico_below_18g.jpg
[05:28] <KT5TK> I don't find a photo just for the board now
[05:28] <nigelvh> Nice work!
[05:28] <nigelvh> Is that still a 2 layer board?
[05:29] <KT5TK> yes
[05:29] <nigelvh> Must have been a good bit of work laying that out.
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[07:09] <KT5TK> BMP180 may be an alternative for BMP085
[07:09] <KT5TK> Not pin compatible though
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[08:21] <griffonbot> @qmgs1554: RT @horizonqmgs: Thank you to all those who turned out to track Horizon's flight last Saturday. We are very grateful for the support #ukhas [http://twitter.com/qmgs1554/status/301244570774163456]
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[09:23] Nick change: HixWork -> Hix
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[09:43] <Hix> /msg NickServ HELP SET
[09:44] <Hix> /msg NickServ HELP URL
[09:44] <Hix> /msg NickServ HELP
[09:44] <daveake> password coming up eh?
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[09:45] <griffonbot> Received email: Jens Pirnay "[UKHAS] Re: HAB research"
[09:47] <Hix> /msg NickServ HELP SET URL
[09:51] <gonzo_> don't put the leading space hix
[09:51] <gonzo_> ity's spilling on to the chan
[09:51] <Hix> oops, sorry
[09:51] <daveake> From Sunday ... http://i.imgur.com/lBrBKO7.jpg
[09:54] <RocketBoy> is that sheep shit loads
[09:54] <RocketBoy> :-)
[09:55] <mattbrejza> do we get to see images from the launch of is there a product in the field of view, and the first time we see the images will be on a tv ad?
[09:56] <daveake> brb phone
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[09:58] <daveake> Yeah I have to keep my photos to myself for now. Not TV though.
[09:59] <mattbrejza> ah
[10:00] <fsphil> this just doesn't seem like a good idea: http://www.bbc.co.uk/news/technology-21373771
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[10:13] <Hix> especially not if they use channel 5
[10:14] <Hix> :D
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[10:40] <staylo> Doh, foolishly followed the link through to 'Lightning strikes as Pope resigns'. Now much more grumpy than the Tuesday average.
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[10:55] <cuddykid> about 8 days and counting now.. still no sign of a damn review
[10:56] <fsphil> totally never doing an iphone app
[10:56] <cuddykid> it is a nightmare trying to get something into the app store
[10:57] <cuddykid> there is no order for reviewing apps either - I would have thought that they review in order received - but no!
[10:57] <fsphil> imagine if desktop PCs worked this way
[10:57] <fsphil> you needed permission to release software
[11:01] <daveake> Swap your phone for what I have - an iRefuseToBuyLockedDownStuff
[11:03] <Hibby> who needs an app anyway when you can have a program
[11:04] <Hibby> or just set up an apt repo and assume that techies with iDevices have them jailbroken
[11:05] <mattbrejza> wouldnt have had this issue if you developed for windows phone / RT
[11:06] <daveake> Wouldn't have any customers either :)
[11:06] <mattbrejza> minor issue :P
[11:08] <fsphil> hah
[11:17] <Hix> should've gone withthe little green alien phone
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[11:18] <lz1dev> what do little aliens do while i sleep?
[11:19] <fsphil> steal your socks
[11:19] <gonzo_> only setal one of them
[11:19] <gonzo_> steal
[11:19] <gonzo_> from the wash basket
[11:20] <lz1dev> hm, i though they take bites out of any fruit i have
[11:21] <gonzo_> mfa298, we are thinking of doing some foil pico flights over the next few weeks. If your or craag have any payloads you want to fly. We have balloons and gas
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[11:35] <Hix> http://goo.gl/HFlkP heh
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[11:49] <craag> gonzo_: oooh, I have parts+PCB here for my new trackers, would very much like to piggyback one on a pico flight to try it out.
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[11:51] <craag> They'll be extremely light, with 1xAAA for power.
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[11:59] <fsphil> you know payloads are getting tiny when you can piggy back on a pico
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[12:10] <craag> Could even fly the 434 with an AAAA, would make things even lighter!
[12:10] <Hix> are all pico loads using the RFM22B?
[12:11] <Hix> and how much more complex is it to code than the NTX2?
[12:11] <craag> Hix: Generally yes, just because it's lighter.
[12:11] <Hix> lot smaller too for the pcb
[12:11] <craag> It's a lot more code, but everything you need is on the UKHAS wiki
[12:12] <Hix> hmmm, might give one a try
[12:13] <craag> So you don't actually have to write any more, just copy-and-paste it in to replace the NTX2 code.
[12:13] <Hix> are therer any gotchas with regards to temp etc?
[12:13] <craag> I haven't used the NTX2, but I think the rfm22 is a lot more drifty with temperature.
[12:13] <Hix> I'm not keen with the copy paste idea, I'm trying to learn so would like to get a handle on as much as I can
[12:14] <Hix> thought it would be succeptible on account of small size and low mass
[12:14] <zyp> Hix, good attitude
[12:14] <Hix> woth a go though, can always test ideas iin the freezer
[12:14] <craag> Exactly, the crystal that controls the frequency is tiny and fully exposed.
[12:15] <craag> I found putting it by a crack in the window with cold gusts coming in to be an exercise in horizontal waterfall tracking
[12:15] <Hix> zyp - HAB became a means for me to make learning a code language worth something other than pain :)
[12:15] <fsphil> my main concern with the rfm22b is it resetting
[12:16] <fsphil> but there are software solutions to that
[12:16] <craag> fsphil: That's true, resetting it each loop is a v good idea.
[12:16] <Hix> hmmm this is sounding a lot more complex now
[12:16] <zyp> to put it nicely: copypasting code is not a way to make a reliable and robust codebase :p
[12:17] <Hix> its a crap way of doing things.
[12:17] <Hix> I admit to it on the NTX2 side, but tis seems that most have used the same functions there
[12:17] <gonzo_> craag, soulds good. Will keep an eye on the predictions for the next few weeks.
[12:17] <craag> The thing with the copy-and-paste is that setting the rfm22 up (power, frequency, mode) is a load of 'magic incantations'. Then instead of toggling a pin for bits, you send one of two magic incantations instead.
[12:18] <craag> magic incantations being sending control commands sent over the SPI bus.
[12:18] <Hix> I'll have a look at the code SPI serial parallel interface?
[12:18] <fsphil> there's a nice rfm22b library out there
[12:18] <fsphil> does most of the hard work
[12:19] <craag> The rfm22 library contains all of the setup code you need.
[12:19] <craag> If you want to see the general structure, take a look at my current code: https://github.com/thecraag/craag-hab/tree/Flight-proto/CRAAG2/code
[12:19] <zyp> craag, the problem with magic is that you can't trust magic.
[12:19] <Hix> jcoxons one https://github.com/jamescoxon/Misc-Projects/tree/master/RFM22
[12:20] <Hix> cheers craag
[12:20] <craag> I forked jcoxon's one, so they're identical ;)
[12:20] <Hix> ah ok
[12:20] <craag> Not the flight code, but the RFM22.cpp/.h
[12:21] <Hix> ok, was only interested in the RFM22 bit, as i say copy/paste bad, though interesting to get other's methods and ideas for learnig from
[12:22] <craag> Yeah, but take a look in the main CRAAG2.ino for how to use the RFM22 library as well.
[12:23] <craag> If you can handle the extra weight and cost, then an NTX2 is probably the best idea (even if you code goes wrong, there'll still be a carrier). But for picos the reduction in weight is a no-brainer.
[12:24] <craag> IMO.
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[12:28] <daveake1> re the rfm22b and temperature ... I like to hot-melt the battery over the rfm22b, to give it some thermal mass and reduce the drifting
[12:31] <Hix> Safer to stick with the NTX2 until I've got flights and recoveries sorted
[12:31] <Hix> especially as the focus is imaging - sorry for unintentional punnage
[12:32] <Hix> right - lunch bbl
[12:34] <craag> gonzo_: What's the purpose in the flights?
[12:38] <craag> Just wondering. not often people offer piggyback on picos, so it must be very light.
[12:39] <cuddykid> ping Upu
[12:39] <cuddykid> / UpuWork
[12:44] <cuddykid> sorted :)
[12:46] <gonzo_> cragg, just using up gas.
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[12:47] <gonzo_> if you have some foil balloons, we have a big bottle to use up as much as poss before returning
[12:47] <craag> Oh fair enough. Yeah I've got a spare balloon lying here.
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[12:48] <craag> I might try a two-tracker 434 at 50 baud, 868 at 600 baud next.
[12:48] <craag> Just to test the 868, but with a backup.
[12:48] <gonzo_> need to test out my yagi ann lna for 868
[12:49] <craag> Did you get hold an 868 saw filter>
[12:49] <craag> ?
[12:49] <gonzo_> what do you use to RX 868? a tcvr module or PC/soundcard
[12:49] <gonzo_> nope, no filtering, except the bandwidth of the antenna
[12:50] <craag> I've got funcube dongle, so I'd use that or an rtl-sdr. Former is lighter on CPU load of my netbook however.
[12:50] <gonzo_> cellular signals are the only prob and I doubt a saw filter would help much
[12:51] <craag> It probably would if they are a problem, the SAW filters for 868 at 2MHz wide, and something like 60dB down at 10MHz out.
[12:51] <craag> But we'll have to see!
[12:51] <gonzo_> have fcd here also. and home there is a proper rx. But that would not come out to site
[12:52] <gonzo_> not looked at the specs, but if you can get filters that tight, let me know where from. Will see if poss to order
[12:56] <craag> I can'
[12:56] <craag> I can't find the exact one that would be useful, but there are a few around.
[12:57] <craag> Anyway, the idea is to try it out before spending too much money in kit on a radio link that might not work (for some unforeseen reason) at altitude!
[12:59] <gonzo_> do you know the exempt band limits at 868?
[12:59] <griffonbot> Received email: chris G7OGX "[UKHAS] Re: Horizon Launch Announcement - Saturday 9th February - Walsall"
[12:59] <gonzo_> save me looking ut up
[13:03] <UpuWork> hi cuddykid
[13:03] <craag> gonzo_: 869.4 - 869.65 MHz
[13:04] <cuddykid> hi UpuWork - sorted for the question I was going to ask - but I have another :P
[13:04] <UpuWork> shoot
[13:04] <craag> Wait
[13:04] <cuddykid> UpuWork: I tried uploading the sketch you sent - however nothing was received on radio (before uploading anything it worked)
[13:04] <UpuWork> have a tune about ?
[13:04] <cuddykid> UpuWork: yep, I'll have another tune
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[13:05] <craag> gonzo_: Yep, that's right. just 250KHz wide.
[13:05] <craag> gonzo_: http://www.ebay.co.uk/itm/EPCOS-B39871B3570U310-FILTER-FRONT-END-SAW-868-30MHZ-/251002939290?pt=UK_BOI_Electrical_Components_Supplies_ET&hash=item3a70f0e79a
[13:06] <craag> Ah no, that one's 868.30, thought it was 869.3, sorry.
[13:07] <craag> Anyway I'll probably start assembling the trackers this weekend.
[13:08] Action: craag -> afk.
[13:08] <cuddykid> UpuWork: hm, nothing. I noticed in the code, that the "RFM22B_SDN" pin was set to pin 3 - but it's on pin 9, so changed that, but still nothing :S
[13:08] <cuddykid> UpuWork: might go back to one of my old sketches and build it up from there
[13:08] <UpuWork> err
[13:08] <UpuWork> 1 sec
[13:09] <UpuWork> give me a few mins cuddykid
[13:09] <cuddykid> no probs :)
[13:13] <daveake1> cuddykid Wild guess - is it setting pin 9 low, but still only enabling pin 3 as an output?
[13:13] Nick change: daveake1 -> daveake
[13:14] <cuddykid> daveake: it's #defined so should propagate throughout, I'll double check though
[13:14] <daveake> OK, he did it properly then :p
[13:14] <cuddykid> all good
[13:18] <daveake> Is it running but not transmitting, or is it getting stuck on startup?
[13:18] <cuddykid> not sure as I can't get serial monitor over ISP
[13:19] <cuddykid> and haven't got the equip with me to test voltages etc on other pins
[13:20] <UpuWork> right Mr C Kid
[13:20] <UpuWork> 1 sec
[13:21] <UpuWork> what was the name of the file I sent you ?
[13:21] <UpuWork> oh its ok I found it
[13:21] <UpuWork> it did have _HABE at the end ?
[13:21] <cuddykid> don't think so, one sec
[13:21] <UpuWork> might have sent you the wrong one :)
[13:21] <cuddykid> you sent me this: http://pastebin.com/RUWtJFW8
[13:22] <UpuWork> sent you another one try that
[13:23] <UpuWork> we know board works
[13:23] <cuddykid> yep
[13:23] <UpuWork> so its just code thats wrong
[13:23] <cuddykid> thanks - email?
[13:23] <cuddykid> got it
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[13:25] <cuddykid> ah yes
[13:25] <UpuWork> works ?
[13:25] <cuddykid> yup
[13:25] <cuddykid> thanks
[13:25] <cuddykid> but - the other one might have worked too - I removed and reconnected the power from isp to reboot the pcb and then it worked
[13:25] <Maxell> now make that RFM22B glow!
[13:25] <cuddykid> before I wasn't doing that
[13:25] <cuddykid> lol
[13:26] <cuddykid> cheers UpuWork
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[13:28] <daveake> Accidentally pressed the wrong keys in Chrome, and discovered that CTRL + digit takes you to tab <digit>
[13:28] <daveake> Learn something new every day :)
[13:31] <NigeyS> i do that in ubuntu alot, the unity stuff has so many hotkeys and shortcuts!
[13:39] <Maxell> every day is a new discover shortcuts
[13:39] <Maxell> NigeyS: cheat: hold the super key
[13:39] <cuddykid> any big advantage of having "$$$$$" instead of "$$" preceding?
[13:39] <NigeyS> super and w is a good 1 !
[13:39] <NigeyS> cuddykid, stop the sentence being cut short if something goes wobbly.
[13:39] <NigeyS> stops*
[13:40] <cuddykid> ah
[13:42] <Randomskk> cuddykid: it gives receivers a bit of time to tune to the right frequency and dl-fldigi a bit of time to sort out syncrhonisation
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[13:43] <cuddykid> makes sense, thought it might be some sort of preamble thing
[13:44] <daveake> It's handy when payloads have gaps between transmissions especially^2 if they switch Tx off too
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[13:47] <NigeyS> dave did you figure out why buzz wasnt working on the weekend ?
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[13:47] <daveake> Well ... I tried it last night and it's working just fine. So, erm, no not really. Something lose - battery or antenna
[13:48] <NigeyS> hmm odd
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[13:48] <daveake> It's an 075 NTX but actually Tx's on .068. I assume someone would have still found it
[13:48] <NigeyS> ahh
[13:48] <daveake> maybe that was it ...
[13:49] <daveake> I was tuned into AVA and didn't get time to stop and look for it
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[13:50] <daveake> ^^ Just need S_Space to turn up :)
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[13:54] <NigeyS> lol
[13:54] <NigeyS> just got that, slow brain day today :/
[13:55] <UpuWork> I couldn't hear it daveake
[13:55] <UpuWork> I had a look round for it
[13:56] <daveake> ok ta
[13:59] <UpuWork> reminds me
[13:59] <UpuWork> I need to make a splitter for the Yagi
[14:02] <gonzo_> craag, looks like RS do some of those epcos filters for 868meg.
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[14:31] <W0OTM> GM
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[14:37] <fsphil> mornin W0OTM
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[14:51] Nick change: SAIDias -> W0OTM
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[15:20] <griffonbot> Received email: GMT "[UKHAS] Re: Horizon Launch Announcement - Saturday 9th February - Walsall"
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[15:33] <Hix> Ø167.325mm
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[15:34] <Hix> ±0.0035mm
[15:34] <eroomde_> yo
[15:34] <Randomskk> hi
[15:35] <eroomde_> hi Randomskk
[15:35] <eroomde_> wanna see my ride yesterday?
[15:35] <Randomskk> will i be really jealous
[15:35] <Randomskk> go on then
[15:36] <fsphil> jealousy mode on standby
[15:36] <eroomde_> https://www.dropbox.com/s/62s38cw5snbmyfr/2013-02-11%2009.39.52.jpg
[15:36] <Randomskk> :OOOO
[15:36] <Randomskk> whaaat
[15:36] <Randomskk> what even is that
[15:37] <eroomde_> henry let me buzz the golden gate bridge in it, a nice sharp 2-g bank right along is span. was not a moment i'll forget
[15:37] <eroomde_> it's a Rutan VariEze
[15:37] <eroomde_> an experimental homebuilt
[15:38] <fsphil> I think we need to bring eroomde_ back, he's having too much fun there
[15:38] <Randomskk> waaaay too much fun
[15:38] <eroomde_> does 180mph cruise and 35mpg - not bad!
[15:38] <Randomskk> jeeez
[15:38] <Randomskk> okay definitely jealous :P
[15:38] <eroomde_> did mojave to LA in 30 mins
[15:38] <eroomde_> mojave is pretty cool, i must say
[15:38] <eroomde_> had a good look around masten
[15:38] <griffonbot> Received email: David Akerman "Re: [UKHAS] Re: Horizon Launch Announcement - Saturday 9th February - Walsall"
[15:38] <eroomde_> but they asked me to not really talk about most of what we saw, so i won't
[15:39] <eroomde_> but they had the original xombie there which is in good shape and v pretty
[15:39] Nick change: eroomde_ -> eroomde
[15:39] <eroomde> had drinks and food with arko last night
[15:39] <Randomskk> nice
[15:41] <eroomde> we're doing things this afternoon but this morn i'm gonna go for a wander around pasadena
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[15:44] <eroomde> fsphil: i'm back on sun
[15:44] <eroomde> it can't last forever
[15:44] <eroomde> https://www.dropbox.com/s/3ayv6yscvvu4bs5/2013-02-11%2010.53.01.jpg
[15:44] <fsphil> it's still nice to get hoem
[15:44] <fsphil> home*
[15:45] <fsphil> hah
[15:45] <fsphil> ed moore: test pilot
[15:46] <fsphil> the controls look very basic
[15:46] <fsphil> like they'd fall off at any moment
[15:52] <eroomde> thankfully they didn't
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[15:52] <Hix> it it a fibreglass fus?
[15:53] <eroomde> yep
[15:54] <Hix> I'd love the space to be able to make things like that
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[15:54] <eroomde> its hangar is pretty much also its workshop
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[15:55] <Laurenceb> wait...
[15:55] <Laurenceb> where is the front wheel?
[15:55] <Hix> I can only dream of a grage with machinhing centres and a 2 post lift
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[15:56] <Laurenceb> this morning people were treating me like a god for filing some pieces of alu for them :-/
[15:57] <Laurenceb> not going to find anyone to help me build that round here...
[15:57] <Laurenceb> eroomde: does it have a front wheel ?
[15:57] <Hix> heh
[15:57] <Laurenceb> i dont see how it lands
[15:58] <eroomde> yes it does
[15:58] <eroomde> retractable
[15:59] <eroomde> it has to be retracted when empty on ground else it falls over backwards
[15:59] <Laurenceb> rofl
[15:59] <Laurenceb> slight issue there
[16:03] <Laurenceb> i like this
[16:03] <Laurenceb> http://www.eaa.org/lightplaneworld/articles/1104_ringtail.asp
[16:04] <Laurenceb> but you are sitting in propwash :-/
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[16:10] <SamSilver> not at toys R us yet http://www.gizmag.com/black-hornet-nano-uav/26118/?utm_source=Gizmag+Subscribers&utm_campaign=494e94330d-UA-2235360-4&utm_medium=email
[16:12] <eroomde> i might have just rented a convertable mustang for the drive back up route 1 to san francisco
[16:13] <Randomskk> haha
[16:14] <jonsowman> hope it's the V8
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[16:14] <eroomde> no idea
[16:15] <Randomskk> hah http://www.zemanta.com/blog/i-bet-you-over-engineered-your-startup/#comment-685047168
[16:15] <eroomde> they seems a bit flakey about guaranteeing exactly what you'll end up with
[16:15] <arko> Morning
[16:15] <jonsowman> hi
[16:15] <arko> eroomde how the hell aee you awake?!
[16:15] <arko> Better yet why
[16:16] <arko> Man im dehydrated
[16:16] <jonsowman> I have a tap for that
[16:16] <mattbrejza> sleeping is just wasted time
[16:16] <arko> It is
[16:17] <arko> Why in the world did i plan drinking the night before a 7am class?
[16:17] <Randomskk> haha
[16:17] <Randomskk> 7am class?! that's mental
[16:17] <Randomskk> I'm upset at 10ams
[16:17] <fsphil> plan?
[16:17] <arko> Yeah
[16:18] <arko> I had to for this one class
[16:18] <eroomde> arko: griffin burger strikes back
[16:18] <arko> Hahaha
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[16:21] <arko> I really should have drank water
[16:21] <fsphil> headache?
[16:22] <arko> Yep
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[16:22] <arko> Im craving orange juice
[16:22] <arko> Gallons of it
[16:22] <fsphil> weirdly I did that when I was in oz
[16:22] <fsphil> and I never usually drink it
[16:22] <fsphil> and haven't since I got back
[16:23] <arko> Hah, odd
[16:25] <Laurenceb> i am indeed
[16:26] <arko> Why did i wake up for this class
[16:26] <fsphil> interesting class?
[16:27] <eroomde> arko: car rented! just have to get to LAX
[16:27] <arko> Its so boring that im scared to show you guys via ustream because there maybe mass suicide due to bordem
[16:27] <eroomde> which it turns out from gmaps seems to be like getting to mordor
[16:28] <arko> Nice!
[16:28] <arko> Haha, yeah... lax is an adventure
[16:28] <arko> Why lax?
[16:29] <arko> There was an Enterprise rental near your hotel
[16:30] <eroomde> cheapest rental i could find
[16:30] <eroomde> do not point out the cost of getting to LAX please :0
[16:31] <Randomskk> the mustang was the cheapest rental you could find?
[16:31] <griffonbot> Received email: Steve Aerospace "Re: [UKHAS] Re: HAB research"
[16:31] <jonsowman> petrol is like, what, 10p/litre?
[16:32] <Randomskk> lol
[16:32] <Randomskk> americans whining about petrol prices is great
[16:32] <UpuWork> what ?
[16:32] <eroomde> cheapest mustang*
[16:32] <Randomskk> haha
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[16:37] <arko> Haha wow, dedicated to drive a mustang
[16:37] <arko> Braving the travel to LAX
[16:37] <arko> I would drive you thrusday, but im stuck at school from 7am till 9pm
[16:37] <arko> Which should be against the law
[16:38] <jonsowman> you'll be fine as long as there are no corners
[16:39] <NigeyS> roundabouts!
[16:39] <jonsowman> are there even any roundabouts? pretty sure it's all just 4 way crossroads with stop signs and no signal control :P
[16:40] <NigeyS> lol i really think they dont exist over there which is quite...scary in a way.
[16:40] <nick_> I tried to rent a ford focus in Hawaii, but they gave me a mustang
[16:40] <fsphil> some places do have them
[16:40] <arko> There are very very few of them
[16:41] <fsphil> there was a bbc story about it a while back saying they where building more of them
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[16:43] <jonsowman> they're all in Milton Keynes
[16:43] <jonsowman> ¬.¬
[16:46] <nick_> WI is currently on a roundabout building drive.
[16:46] <nick_> Unfortunately it's not on a teaching people how to use a roundabout drive :S
[16:47] <griffonbot> @Rapid_Edu: RT @horizonqmgs: Thank you to all those who turned out to track Horizon's flight last Saturday. We are very grateful for the support #ukhas [http://twitter.com/Rapid_Edu/status/301372015212892160]
[16:48] <griffonbot> @Rapidonline: RT @horizonqmgs: Thank you to all those who turned out to track Horizon's flight last Saturday. We are very grateful for the support #ukhas [http://twitter.com/Rapidonline/status/301372129784504321]
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[16:59] <eroomde> test
[16:59] <Laurenceb> failed
[17:04] <fsphil> points for effort though
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[17:05] <arko> http://i.imgur.com/NfKeDXX.gif
[17:06] <staylo> eroomde: iirc the main LAX car hire centre is some distance from LAX. Not sure if that includes enterprise.
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[17:30] <x-f> Landsat separating from the booster (video) - http://www.flickr.com/photos/gsfc/8465269711/
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[17:40] <eroomde> staylo: yep, i've read they have regularish shuttle busses from the desk
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[17:46] <cuddykid> Upu: I'm loving this pinky purple led
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[18:08] <griffonbot> Received email: Henry Hallam "Re: [UKHAS] Re: HAB research"
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[18:11] <griffonbot> Received email: Henry Hallam "Re: [UKHAS] Re: HAB research"
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[18:15] <arko> UPU: got your emails, thanks dude :)
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[18:23] <griffonbot> Received email: Ed Moore "Re: [UKHAS] Re: HAB research"
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[18:39] <daveake> hello
[18:39] <Lunar_Lander> hi
[18:39] <daveake> flight soon?
[18:39] <Lunar_Lander> hopefully
[18:39] <daveake> good good
[18:39] <Lunar_Lander> my team has an exam in theoretical physics on thursday
[18:40] <Lunar_Lander> the board is already in the box
[18:40] <Lunar_Lander> though I thought about how I would construct the next one
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[18:46] <cuddykid> reading the article on arduino timer interrupts - rather interesting
[18:47] Action: fsphil had pancakes. just thought you'd all like to know
[18:47] <SpeedEvil> I just had a nice kipper and some teeny roast potatoes
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[18:47] <SpeedEvil> err, baked
[18:47] <fsphil> oh nice
[18:49] <arko> Mmmm potatoes
[18:49] <lz1dev> poteitous
[18:51] <arko> Or as the south calls it "taters"
[18:51] <SpeedEvil> I have found my new hot air blast oven will do teeny baked potatoes in 30 min
[18:52] <arko> Heh, just dont mix your pcb oven with the food oven
[18:53] <fsphil> I've a sticker on mine "Not for food!"
[18:54] <cuddykid> hm, uplink with 2 transmitters in payload.. is it worth trying to sync up the transmitters to ensure that a gap is left between transmission for both, or - is it good enough just to set one transmission say at 434.2 and another at 434.4?
[18:54] <fsphil> why two?
[18:54] <cuddykid> this is so that an uplink would have the maximum chance of reaching payload
[18:54] <cuddykid> fsphil: running two trackers on the next flight for a mid-flight separation
[18:54] <cuddykid> (hopefully)
[18:54] <fsphil> ah
[18:55] <fsphil> cool!
[18:55] <fsphil> two balloons?
[18:55] <cuddykid> just 1
[18:55] <cuddykid> cutdown in the middle :)
[18:55] <griffonbot> Received email: Arko "Re: [UKHAS] Re: HAB research"
[18:55] <fsphil> nice. I'm planning something similar
[18:55] <fsphil> though the trigger will be a geofence
[18:55] <cuddykid> last time I tried a cutdown though it never made it off the ground!
[18:56] <jonsowman> slow moderation is due to horrible examples paper questions
[18:56] <jonsowman> I apologise
[18:56] <fsphil> cuddykid: you'll probably find your receiver will be overloaded by the transmitter
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[18:56] <fsphil> you won't be able to do both at the same time
[18:57] <fsphil> unless the frequency was very far apart
[18:57] <cuddykid> fsphil: yeah, I'm thinking of leaving a 10-15 second break in-between transmissions
[18:57] <fsphil> like an 869mhz upload
[18:57] <cuddykid> I'll try and think about syncing the payloads up somehow - perhaps GPS time
[18:58] <fsphil> rfm22bs?
[18:58] <cuddykid> this will all be very experimental :P - I'll be flying one with a stub antenna
[18:58] <cuddykid> yep
[18:58] <fsphil> you could have them talk
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[18:59] <cuddykid> HABE1: "enjoy your breakfast HABE 2?" HABE2: "yup"
[18:59] <cuddykid> :)
[19:00] <fsphil> HABE1: "I suppose we should let the humans know where we are" HABE2: "yup, you do it this time"
[19:00] <fsphil> gps time is probably easier
[19:01] <cuddykid> haha
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[19:02] <fsphil> I'd better get my cut-down tested, now that there is competition :)
[19:03] <daveake> SpaceTed will have a cutdown too. Well more of a "push out" really :)
[19:04] <fsphil> High AlTedude Bear
[19:04] <daveake> done that pun before :)
[19:05] <daveake> To The Tropopaws!
[19:05] <cuddykid> :)
[19:06] <daveake> He'll get kicked out at 100m above the Felix record. Hopefully.
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[19:11] <cuddykid> daveake: a servo doing the work?
[19:12] <daveake> Well, I'm favouring a spring / cord / nichrome
[19:12] <cuddykid> interesting, hadn't thought of that
[19:12] <daveake> Possible with a comedy boot oin the end of the spring :)
[19:12] <cuddykid> lol
[19:12] <cuddykid> are you attempting to film it's descent?
[19:13] <fsphil> encouragement
[19:13] <daveake> I want to capture the bit where Felix, er, Space Ted "jumps"
[19:13] <daveake> So a camera or 2 on the main payload
[19:14] <cuddykid> nice
[19:14] <fsphil> one above looking down would be cool
[19:14] <daveake> Exactly what I want
[19:14] <daveake> I want this shot http://i.space.com/images/i/000/022/791/iFF/felix-baumgartner-supersonic-freefall-leap.jpg?1350250834
[19:14] <SpeedEvil> http://www.google.co.uk/search?q=jeremy+the+annoying+horse&hl=en&safe=off&client=tablet-android-asus-nexus&tbo=u&rlz=1Y3NDUG_enGB499GB499&tbm=isch&source=univ&sa=X&ei=RpQaUe2zB-SO4gSp-4CQBw&ved=0CDkQsAQ&biw=600&bih=904 came to mind for the kicking out
[19:15] <daveake> link fail
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[19:16] <Hix> I've got brain fade and have used 2 convertors that conflict. 100nF is 0.1uF true?
[19:16] <daveake> yep
[19:17] <Hix> tfft, was losing my marbles, there's some very poor calcs online, couldn't remember the order and farnell only deals in uF
[19:18] <Hix> ta daveake
[19:18] <cuddykid> problem with syncing up payloads with GPS time - unless it's done for the exact time it's not going to work I don't think
[19:18] <fsphil> I can never remember the units for capacitors
[19:19] <Hix> Farads :)
[19:19] <Hix> sorry
[19:19] <fsphil> stop pico'ing on me
[19:19] <Hix> u should know
[19:20] <Hix> cant do alt as don't have numeric on lapop
[19:20] <Hix> oops laptop
[19:21] <fsphil> lapop is what balloons do in france
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[19:24] <arko> !qoute
[19:24] <arko> Quote*
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[19:24] Nick change: [1]G8KNN-Jon -> G8KNN-Jon
[19:24] Possible future nick collision: G8KNN-Jon
[19:29] <Hix> grrr, someone at home keeps killing both power and my server, i need a ups
[19:29] <Hix> fsphil: :D
[19:29] <Upu> I'm here!
[19:30] <Hix> where
[19:30] <Hix> wow! that's ironic with my farnell order: "Shopping Basket : £20.00"
[19:31] <cuddykid> oh poo
[19:31] <cuddykid> thought the ISP vcc was fed through greg - turns out it's not :P
[19:31] <cuddykid> *vreg
[19:32] <cuddykid> I noticed when magic smoke filled the room
[19:32] <Hix> tweezers from farnell? any pt#'s there's bazillions
[19:32] <Upu> dx.com fro tweezers
[19:33] <Hix> aren't they china?
[19:33] <fsphil> the isp vcc pin isn't normally used to provide power cuddykid :)
[19:33] <Hix> fro tweezers? this a haircare product
[19:33] <Hix> for the dapper gent
[19:33] <daveake> bazillions of brazilians
[19:33] <Hix> :D
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[19:34] <cuddykid> fsphil: yeah, my pwr pin isn't soldered up and the lack of equipment here has lead my to explore new avenues lol - with disastrous consequences probably
[19:34] <fsphil> exploding new avenues?
[19:35] HixServer (~Hix@87.194.200.92) got lost in the net-split.
[19:35] <cuddykid> not far off
[19:35] <Hix> whats shipping time from dx.com?
[19:35] <Hix> #impatient
[19:35] <Hix> good job that wasnt a typo
[19:36] <fsphil> maybe it was
[19:36] <x-f> !
[19:37] <Hix> mmmmm Illuminated Earpick (Ear Wax Remover and Cleaner 3-Piece Set)
[19:37] <cuddykid> come back to life pcb!
[19:37] <fsphil> euuuuuu
[19:37] <x-f> Hix, usually a month or a bit more
[19:37] <Hix> sod that then
[19:37] <Hix> also sod farnells prices
[19:37] <fsphil> I had a single order with dx.com where some of it arrived within a week
[19:37] <fsphil> and the rest took three months
[19:37] <Hix> medical friends need to be on the rob i think
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[19:39] <Hix> or bitsbox http://www.bitsbox.co.uk/tools.html
[19:39] <Hix> £3.20, should be better than my chip shovels
[19:40] <griffonbot> Received email: Steve Aerospace "Re: [UKHAS] Re: HAB research"
[19:43] <Hix> what was the factor of safety thing for caps? 3xvoltage min?
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[19:43] <fsphil> respect the specs
[19:43] <Hix> Shrove tuesday, what a load of crepe
[19:43] <fsphil> which should totally be a song
[19:44] <Hix> all you need is a little
[19:44] <cuddykid> hm, nothing on the radio - think I could have fried it?!
[19:44] <fsphil> well, pancake tuesday turned out a bit flat
[19:44] <Hix> what specs? I'm not sure for a 3v3 system is 10V caps ok?
[19:44] <cuddykid> looks like I fried the wrong thing today
[19:45] <Hix> ha
[19:46] Action: Upu pats cuddykid
[19:46] <Upu> work out what does work
[19:46] <Upu> start with blink
[19:46] <Upu> then blink on data from serial
[19:47] <Hix> Upu, whats the story with factor of safety on caps? 3v3 circuit
[19:47] <cuddykid> yeah
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[19:47] <daveake> not much
[19:47] <Upu> for DC > 3V3
[19:47] <daveake> As in, don't exceed the cap max V by much
[19:47] <Upu> 6/10 should be fine
[19:48] <Hix> ok so 10V fine then
[19:48] <daveake> yes
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[19:48] <Hix> cool, ta. Man farnell shopping is apainful experience
[19:48] <Hix> definitely going to save part numbers for future ref
[19:49] <bertrik> random page I found about capacitor derating: http://www.interfacebus.com/How_to_Derate_Capacitor.html
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[19:56] <cuddykid> what's worse& I originally powered on the 1st pcb the wrong way and then realised it was that one I needed to program - so, I've applied the same power treatment to both of them :(
[19:56] <cuddykid> lol
[19:57] <fsphil> one of thost days
[19:57] <fsphil> -t+e
[19:57] <NigeyS> diodes ftw :p
[19:57] <fsphil> I was thinking of toast when I wrote that
[19:58] <daveake> I'm thinking of pancakes
[19:58] <NigeyS> with or without jif ?!
[19:59] <daveake> Some of each
[19:59] <fsphil> we had sugar and syrup
[19:59] <daveake> Usually we have some with chilli and then some with sugar and lemon
[19:59] <Hix> 1 hour to spend £24.00, jayzus
[19:59] <Hix> farnell is painful
[20:00] <NigeyS> ah you enjoy savoury pancakes too
[20:00] <NigeyS> fsphil, maple syrup !
[20:00] <Hix> right - now that everything [apart from tweezers] is sorted for tracker, time for food.
[20:01] <Hix> maybe bacon and maple syrup for dessert :D
[20:01] <Hix> bbl
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[20:03] <fsphil> there was bacon too but I didn't have any
[20:04] <fsphil> sugar and bacon just isn't a combo I fancy :)
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[21:11] <Hix> ping fsphil
[21:11] <fsphil> pong Hix
[21:12] <Hix> hello, did you say you did some camera'd up nesting boxes?
[21:14] <fsphil> yep!
[21:14] <fsphil> got a small blue/great tit box with a camera in it, and two swift boxes
[21:15] <Hix> got any intel on cameras etc? thinking g-f would love that as a prsesnt for spring [i.e many HAB/Brownie points accrued]
[21:16] <fsphil> cunning plan
[21:17] <fsphil> depends on how much you'd like to spend :)
[21:17] <fsphil> I've gotten some budget cameras of CPC that give fair quailty
[21:17] <fsphil> but they really need internal light
[21:17] <fsphil> quality*
[21:18] <Hix> I've got a sony pencil-cam which is ok at low light, forget spec.
[21:18] <fsphil> that might work -- if you use natural light during the day, and some IR LEDs for night
[21:18] <Hix> basically looking into how to do it easiest, thinking 2.4GHz sender
[21:18] <fsphil> not that a huge amount happens at night, but the egg laying happens before dawn
[21:18] <Hix> linked to server somehow
[21:19] <Hix> so it'd be a local ip address on ipad for her
[21:19] <fsphil> that's how I did it the first year, but the neighbours microwave never seemed to be off
[21:19] <Hix> :D
[21:19] <Hix> slim are they
[21:19] <fsphil> ended up running cat5 with video baluns
[21:19] <fsphil> guess :)
[21:19] <Hix> they should cook more bacon
[21:20] <Hix> you burn more calories dribbling before it's cooked than it actually has :)
[21:20] <fsphil> cat5 was handy as I could just send power through that too
[21:20] <fsphil> hah
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[21:20] <Hix> ahh, plan
[21:20] <fsphil> maybe you could run the cat5 to a shed or something, then have the 2.4ghz transmitter in there
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[21:21] <Hix> t.b.h coax from cam to server would prob be ok
[21:21] <fsphil> that would be best, esp. if you've got some motion detection
[21:23] <Hix> Sony Exview CCD 1/3" is the jobbie
[21:23] <Hix> befor GoPro appeared it was the mutts, BBC used it
[21:24] <fsphil> it might have IR filtered out, so you might not get to see anything at night
[21:24] <Hix> hmm, need to check.
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[21:25] <fsphil> I've been very tempted to use a gopro, but it's a bit expensive for that
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[21:26] <fsphil> and running hdmi is a lot trickier
[21:26] <Hix> what is used at the server end of it all?
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[21:45] <Lunar_Lander> did someone of you ever solder a microSD socket to a PCB?
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[21:59] <KT5TK_QRL> I designed such a PCB but I never actually soldered one on my PCBs.
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[21:59] <KT5TK_QRL> You'll likely need solder paste and hot air
[22:00] <KT5TK_QRL> It may be difficult to reach the pins with a solder iron
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[22:07] <Lunar_Lander> KT5TK_QRL, the people in the comments at sparkfun talk about that the metal cover could actually be removed for soldering
[22:07] <Hix> sory fsphil battery died
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[22:19] <fsphil> wb Hix
[22:20] <Hix> hello
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[22:33] <Maxell> Hix: hai
[22:33] <Hix> ho
[22:38] <cuddykid> woo, app has been approved!
[22:38] <Hix> nice, you've been accepted into the darkside ;p
[22:38] <cuddykid> feels like it
[22:39] <nigelvh> You are one with the machine
[22:39] <Hix> did you read the T&C's about your soul now being owned by the Jobs legacy
[22:39] <cuddykid> haha
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[22:42] <nigelvh> We are the Apple. Existence, as you know it, is over. We will add your biological and technological distinctiveness to our own. Resistance is futile.
[22:43] Nick change: gartt_ -> gartt
[22:43] <Hix> your DNA will be removed, cleaned and all traces of any Microsoft useage will be cleaned away
[22:45] <Hix> bollo need more charge, manana
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[23:22] <griffonbot> Received email: chris G7OGX "[UKHAS] Mid-West USA high altitude balloon launch on February 16th I-HAB9"
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[00:00] --- Wed Feb 13 2013