highaltitude.log.20110204

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[03:30] <W0OTM> http://www.ihabproject.com/
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[08:26] <earthshine> morning
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[08:27] <fsphil> g'day!
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[09:45] <NigelMoby> Morning peep
[09:45] <NigelMoby> S
[09:50] <fsphil> and what a lovely morning it is too :)
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[09:55] Action: SpeedEvil ponders getting out of bed.
[09:55] <NigelMoby> Grrr
[09:55] <SpeedEvil> I guess I have to, as I can't hit the toilet from here.
[09:55] <NigelMoby> I'm considering it to but cba lol
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[09:57] <NigelMoby> Fsphil how's the weather?
[09:57] <fsphil> wet
[09:57] <fsphil> but calm at least
[09:57] <NigelMoby> Lol nasty here bloody wind :/
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[10:01] <fsphil> yea, was bad overnight here. the bird table got relocated
[10:01] <NigelMoby> Lol bloody ell
[10:02] <fsphil> made a right mess on the ground
[10:02] <SpeedEvil> np: They might be giants - Birdhouse in your soul.
[10:02] <Darkside> YESSSSSS
[10:02] <fsphil> hehe
[10:02] <Darkside> not to put a finer point on
[10:02] <Darkside> i'm the only bee in your bonnett
[10:03] Action: fsphil is listening to 90s europop :)
[10:03] <NigelMoby> We've got an open fireplace in the bedroom and when the winds bad its an awful sound
[10:03] <Darkside> make a little birdhouse in your soul
[10:03] <NigelMoby> Hey darkside
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[10:20] <NigeyS> oh this sounds fun ..
[10:20] <NigeyS> In order to improve our ability to reliably test new features for our telescopes and then quickly bring them to market, Celestron has decided to form Team Celestron.
[10:21] <NigeyS> yadayadayada .. as if i want to beta test their firmware, i spend long enough freezing my ass off because their firmware doesnt like polar aligning as it is!
[10:23] <fsphil> NigeyS, http://www.sparkfun.com/products/10255
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[10:24] <NigeyS> ooooo now that looks handy
[10:25] <NigeyS> only 200ma output though :|
[10:25] <fsphil> yea, it would be tight with the gps and ntx2
[10:26] <fsphil> the datasheet says 300ma
[10:26] <NigeyS> i was thinking.. might be a board that does this but bare with me ..
[10:27] <NigeyS> have the gps use its own power source, so, 3 x AA batteries, going through a voltage regulator on a stripboard
[10:27] <NigeyS> that'll regulate it down to 3.3 right ?
[10:27] <nevyn> 3.5 won't be enough headroom for the regulator
[10:28] <fsphil> 3x 1.5 = 4.5
[10:28] <nevyn> oh yeah
[10:28] <NigeyS> ya 4.5 should be though
[10:28] <nevyn> that's enough ;)
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[10:28] <fsphil> if you've got 3 AA's, you may as well power everything off it
[10:29] <NigeyS> well... as i dont have to worry about the weight as much i thought chuck the ntx2 and gps on ehtir own power source just in case ?
[10:29] <NigeyS> their*
[10:29] <fsphil> there'd be no advantage -- the avr power usage is tiny compared to both
[10:30] <NigeyS> ahh oki
[10:31] <NigeyS> btw i found that sma connector somewhere else..
[10:31] <fsphil> ooh
[10:31] <NigeyS> same one, same part number .. £11.45 lol !
[10:31] <fsphil> lemme guess .. RS?
[10:31] <NigeyS> no, some company ive never heard of, will get the url off the laptop later, i almost fell off the dam chair!
[10:32] <fsphil> I thought 2 quid was dear
[10:32] Action: Laurenceb has been reading http://www.rcexplorer.se/projects/
[10:32] <NigeyS> so did i! lol ill order it for rapid later once ive decided these resistors are definately the right 1's
[10:32] <Laurenceb> NigeyS: sma connectors are expensive
[10:32] <Laurenceb> i found mouser have some £2 ones
[10:33] <NigeyS> they do seem to be alot for a little tiny thingy :|
[10:33] <Laurenceb> but usa of course
[10:33] <NigeyS> rapid have 1 for 3quid i think
[10:33] <fsphil> 2 something
[10:33] <Laurenceb> yeah farnell were about 4 iirc
[10:33] <fsphil> wonder why so much
[10:33] <NigeyS> farnell hate me !
[10:34] <Laurenceb> ok ill remeber rapid for sma
[10:34] <fsphil> farnell hate everyone :p
[10:34] <NigeyS> http://www.rapidonline.com/sku/Cables-Connectors/Connectors-RF-Coaxial/SMA-SMB-MCX/PCB-Mounting-jacks/34238/16-1562
[10:34] <NigeyS> 2.95
[10:35] <fsphil> ah, may as well be 3
[10:35] <Laurenceb> heh
[10:35] <NigeyS> only 1.55 if i order 100 .. lol
[10:35] <Laurenceb> not that bad
[10:35] Action: Laurenceb has been looking at tricopters
[10:35] <Laurenceb> no need for counterrotating props
[10:36] <NigeyS> i was looking at the links you posted yesterday would love to try to build 1 some time but meh my diy skills arent that good just yet
[10:36] <fsphil> I got a couple of cheap RC helicopters to try building a quadcopter
[10:36] <fsphil> didn't get very far
[10:36] <NigeyS> oo
[10:37] <NigeyS> i bought my dad one of those rc planes .. the F35 .. mental !!
[10:37] <SpeedEvil> Laurenceb: Sometrime in the future, people will try making copters with only one rotor...
[10:37] <Laurenceb> heh
[10:37] <fsphil> they are fun -- I crashed two of mine
[10:37] <NigeyS> SpeedEvil, surely that cant be done ?
[10:37] <fsphil> but one got to a really good height, I was having trouble keeping sight of it
[10:37] <Laurenceb> it gets harder with <3
[10:38] <NigeyS> lol phil, shouldve got ya telescope out!
[10:38] <Laurenceb> personally i quite like the look of tricopter - looks easy
[10:38] <NigeyS> isnt the idea of more than 1 rotor to stop the thing spinning round like a runaway roundabout ? :|
[10:38] <Laurenceb> one gets twitchy, you need fast control
[10:38] <fsphil> I stuck a camera on it for the second flight, but just flew it into a lamp-post
[10:38] <Laurenceb> NigeyS: control fins in the airstream
[10:38] <NigeyS> you rebel!
[10:38] <fsphil> the post won that little war
[10:39] Action: Laurenceb once tried flying a cheap ebay plane in ~60mph winds
[10:39] <NigeyS> hmm control fins .. then it becomes a rotored plane! ?
[10:39] <Laurenceb> managed to get it into such a fast spin it shredded itself
[10:39] <NigeyS> lmao
[10:39] <Laurenceb> never found the batteries
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[10:40] <Laurenceb> or the motor
[10:40] <NigeyS> oh eck, thats what you call shredded!
[10:41] <Laurenceb> for a signle rotor 'copter' you need at least three fins in the airstream
[10:42] <NigeyS> yup, not quite as simple as it sounds either
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[10:43] <NigeyS> huh
[10:43] <NigeyS> get out!
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[10:49] <SpeedEvil> Laurenceb: Actually, two will do
[10:49] <SpeedEvil> Laurenceb: but the control will then be wacky
[10:49] <Laurenceb> huh
[10:49] <Laurenceb> how does that work?
[10:50] <SpeedEvil> you rely on spinning it into the correct orientation before putting in any control inputs
[10:50] <Laurenceb> oh
[10:50] <Laurenceb> im not sure if thats feasible
[10:50] <NigeyS> that could be fun, wear a helmet mind :p
[10:51] <SpeedEvil> Laurenceb: Or you have the 'body' rotating all the time, with the fins maintaining - say - a 100RPM spin. You then create common mode control inputs by activating both fins at once.
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[10:59] <Laurenceb> yes... but
[10:59] <Laurenceb> no
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[11:00] <Laurenceb> i guess servos are a lot cheaper than motor + prop + esc
[11:00] <Laurenceb> so its nice from cost point of view
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[11:01] <SpeedEvil> One 'fin' can even be fixed
[11:02] <Laurenceb> three fins is the fewest any sane person would have
[11:02] <SpeedEvil> Indeed.
[11:02] <Laurenceb> at 120degrees
[11:03] <fsphil> the tricopter 'steers' by controlling just the rotors?
[11:03] <Laurenceb> on has varible angle mount
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[11:04] <Laurenceb> having said that you can get an esc for $10
[11:04] <Laurenceb> http://www.hobbycity.com/hobbycity/store/uh_viewitem.asp?idproduct=656
[11:04] <fsphil> hmm.. all the rotors I have spin in the same direction
[11:04] <fsphil> not sure I could build one with the bits I have
[11:06] <Laurenceb> in fact http://www.hobbycity.com/hobbycity/store/uh_viewItem.asp?idProduct=4852
[11:06] <Laurenceb> whole tricopter for $44
[11:09] <Laurenceb> 600 grams thrust from that as well
[11:09] <Laurenceb> so 1.8Kg total
[11:09] <fsphil> how high could something like that get to, with the weight of the battery and all
[11:12] <Laurenceb> dunno - depends how heavily its loaded
[11:13] <Laurenceb> maybe 5 or 6Km if you max throttled it and went straight up until the battery was flat
[11:15] <Laurenceb> i was thinking for 3D object capture
[11:15] <Laurenceb> the imu comes in really handy for that
[11:20] <Laurenceb> SpeedEvil: if you remember that idea for laser mosquito zapper - the aimed laser + dual photodiodes could be used to make a 3D cheapo scanner
[11:21] <SpeedEvil> yep
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[11:32] <Laurenceb> Im thinking ill order the dactyl parts soon
[11:32] <Laurenceb> populate one v1 board to test things, before moving onto version2
[11:32] <Laurenceb> as the power supply especially needs to be tested
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[11:35] <Laurenceb> problem is it involved digikey and mouser
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[12:01] <Laurenceb> http://sites.google.com/site/wayneholder/gps-vs-barometric-altitude
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[12:39] <jcoxon> Pico Atlas recovered!
[12:39] <Darkside> noice
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[12:41] <fsphil> er
[12:45] <Laurenceb> ah cool
[12:46] <Laurenceb> presumably it blew out in this weathger
[12:46] <fsphil> it got blown onto the road in the way of a car
[12:46] <SpeedEvil> naah
[12:47] <SpeedEvil> yeah - that
[12:47] <SpeedEvil> happened the day after i thin
[12:47] <fsphil> yep
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[12:51] <Laurenceb> http://www.sparkfun.com/products/9810 <- its in stock
[12:51] <SpeedEvil> That is astoundingly reasonable prices for sparkfun
[12:52] <Darkside> ooooh
[12:53] <Darkside> need one of those for my clone-a-tron
[12:53] <Darkside> that and a 2-axis accelerometrr for elevation
[12:54] <Darkside> compass for azimuth of course
[12:54] <Laurenceb> you can get free samples from st
[12:54] <Laurenceb> but of course no break out board
[12:54] <SpeedEvil> Laurenceb: how did you get yours?
[12:54] <Laurenceb> emailed them from a .ac.uk address
[12:54] <Darkside> yeah... i cant do reflow
[12:54] <SpeedEvil> ah
[12:55] <Laurenceb> ive hand soldered lots of lga stuff with iron + hot air
[12:55] <Darkside> ugh
[12:55] <Darkside> naaaah i dont think ill do that
[12:55] <Darkside> heh
[12:55] <Laurenceb> tin the pads then clamp it with tweezers
[12:55] <Laurenceb> and hot iar it
[12:56] <Laurenceb> the need for 1.8v for the magno logic is annyoing, but the itg-3200 has onboard 1.8v reg
[12:56] <Laurenceb> on my autopilot board it steals 1.8v from the itg
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[12:58] Action: Laurenceb just soldered 20 lag-14 parts like that - all worked :P
[13:00] <Laurenceb> you can also ring them up (ST)
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[13:01] <Laurenceb> hmm from the comments it seems sparkfun screwed up with the logic levels
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[13:02] <Laurenceb> and id tend to agree
[13:02] <Laurenceb> >1.8v on the io lines will fry it :(
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[13:09] <Laurenceb> how do sparkfun managed to screw things up so often
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[13:11] <NigeyS> lack of testing by the sounds of it
[13:12] <Laurenceb> more like not reading the datasheet
[13:13] Action: fsphil has had no problems at all from his sparkfun pint glass
[13:13] <Laurenceb> RTFM!!
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[13:35] <Laurenceb> http://cgi.ebay.com/laser-show-galvo-scanner-CW20K-Scanning-galvanometer-/120562372588?pt=LH_DefaultDomain_0&hash=item1c1213cfec
[13:36] <russss> Laurenceb: holy shit, is that a pricing error?
[13:36] <Laurenceb> no
[13:36] <SpeedEvil> That is really astounding
[13:37] <Laurenceb> images wont load
[13:37] <russss> I think I might just have to buy one
[13:38] <russss> also apparently free international shipping
[13:38] Action: russss is buying *way* too much laser stuff lately.
[13:38] <SpeedEvil> Damn - I need to get my laser ranger working
[13:39] <russss> I bought a 12W argon ion laser off a guy in essex the other day
[13:39] <SpeedEvil> A couple of those, and it would be awesome.
[13:39] <russss> right, I bought one. You can't go wrong at that price.
[13:41] <Upu> woo got my 48" cross form parachute
[13:41] <fsphil> nice Upu
[13:42] <Upu> its bright orangy/pink like the payload shouldn't be too hard to see
[13:42] <Laurenceb> is it one or two axis?
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[13:43] <fsphil> Upu, good. as cool as the black parachute looked, it's definitely not good for recovery :)
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[13:47] <SpeedEvil> russss: how much? (laser)
[13:47] <SpeedEvil> What is that - orange?
[13:47] <russss> SpeedEvil: £850 inc delivery
[13:47] <russss> I dunno if it works.
[13:47] <SpeedEvil> Ah.
[13:47] <SpeedEvil> Moderately spendy.
[13:48] <Laurenceb> can anyone load the test patterns?>
[13:48] <russss> if it does work it's worth at least 5 times that.
[13:48] <SpeedEvil> For any reason other than a backpack mounted laser-pointer?
[13:48] <russss> Laurenceb: yeah I could.
[13:48] <SpeedEvil> I could too
[13:48] <russss> SpeedEvil: http://www.flickr.com/photos/dekstop/5401773756/
[13:48] <Laurenceb> i cant.. odd
[13:48] <Laurenceb> can anyone imgur them?
[13:49] <SpeedEvil> http://www.laserpic.com/Ebay/CW20image/CW20_20Kpps@8optic%20angle%202_320.jpg
[13:49] <SpeedEvil> what happens on that?
[13:49] <Laurenceb> hmm not loading
[13:49] <SpeedEvil> 404?
[13:49] <Laurenceb> oh it does eventually
[13:49] <Laurenceb> so thats the test pattern at 20KHz ?
[13:50] <russss> yeah
[13:50] <Laurenceb> with what deviation angle?
[13:50] <russss> 8 degrees I think
[13:50] <Laurenceb> looks half decent
[13:50] <russss> for $108 inc PSU it's awesome
[13:50] <Laurenceb> and the driver board takes +-5V analogue?
[13:51] <russss> ILDA standard is +/- 10V I think
[13:52] <russss> http://www.laserfx.com/Backstage.LaserFX.com/Standards/ISP-DB25.html
[13:53] <russss> I have a PCB design for turning a cheap £10 USB sound card off Amazon into a driver for these
[13:53] <Laurenceb> id want to use it for a scanner
[13:54] <SpeedEvil> Laurenceb: A 12W argon-ion laser should work well for flykilling
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[13:54] <Laurenceb> heh
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[13:55] <Laurenceb> ordered one :P
[13:55] <Laurenceb> £67 crazy
[13:56] <russss> yeah free delivery too
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[13:58] <Laurenceb> i guess its from china and fundamentally its not that complex
[13:58] <Laurenceb> so the price is realistic, its just the same hardware from anyway else would be an order of mag more
[14:00] <SpeedEvil> Laurenceb: Because it 'should be'.
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[14:05] <Laurenceb> hmm looks like 1Mpixel 2D+range imaging should be possible at 100fps
[14:06] <Laurenceb> the challenge would actually be getting an adc fast enough
[14:06] <Laurenceb> for the photodiodes
[14:07] <SpeedEvil> Laurenceb: I'm pretty sure it can't do 1000 lines at 100fps
[14:08] <Laurenceb> if that test image refreshes at hmm...
[14:08] <Laurenceb> thats got to be 20 fps surely
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[14:10] <Laurenceb> ok thats more realistic
[14:12] <SpeedEvil> As I understand it, the test image is a very limited number of 'points'
[14:14] <Laurenceb> yeah, but thats all you need
[14:14] <Laurenceb> 2x number of rows
[14:14] <Laurenceb> so 1fps high res 3D should be poss
[14:15] <NigeyS> hm do i need to put a cap on this stripboard with the vreg?
[14:17] <SpeedEvil> http://www.laserist.org/Laserist/tech_tips_5.html is good!
[14:17] <SpeedEvil> NigeyS: In general, the answer to that question is always yes
[14:17] <Laurenceb> oh 20 Kilopointspersecond
[14:17] <NigeyS> oki, tnx SpeedEvil
[14:18] <Laurenceb> so ~1000x1000 at 1fps
[14:19] <Laurenceb> it could display TV quality video if you have rgb lasers
[14:19] <SpeedEvil> maybe
[14:19] <SpeedEvil> I'm unsure
[14:20] <Laurenceb> itd probably ware out fast if you used it as a tv :P
[14:22] <Laurenceb> i dont see the cables on the photo
[14:36] <Laurenceb> might be useful for ground to hab uplink
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[14:40] <SpeedEvil> Also balloon location
[14:42] <Laurenceb> hey nice idea
[14:43] <Laurenceb> tho im not sure how well the optics work for that
[14:43] <Laurenceb> unless there was a retroreflector maybe
[14:43] <SpeedEvil> The balloon is damn huge
[14:44] <Laurenceb> but you have to illumanate it and detect that light
[14:44] <SpeedEvil> Modulate at XMHz, nice filter, job done.
[14:45] <Laurenceb> and what would you have on the gnd?
[14:45] <SpeedEvil> laser, and a telescope slaved to it
[14:45] <SpeedEvil> Where telescope may be something very modest indeed
[14:46] <Laurenceb> and a photodiode?
[14:46] Action: Laurenceb is struggling to see how this could work
[14:47] <Laurenceb> unless the telescope has to be pointed as well
[14:49] <SpeedEvil> you roughly point the telescope inthe same direction as the balloon. It gets maybe half a degree of light, and focusses it onto the diode
[14:49] <SpeedEvil> Then you wiggle the laser around, and see if you get a signal
[15:02] <Laurenceb> i guess, but its not hugely useful
[15:02] <SpeedEvil> True
[15:02] <russss> the best laser galvos are about 60-70 kpps
[15:02] <russss> they can approximate 320x240 video at full framerate
[15:03] <Laurenceb> not bad
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[15:03] <russss> but yeah, you can drive a 20kpps galvo from a normal sound card (with some simple output electronics)
[15:03] <Laurenceb> heh
[15:04] <Laurenceb> id want to try a 3d scanner using laser diode and two photodiodes
[15:04] <russss> you can just do that with a laser line lens
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[15:05] <Laurenceb> not 3d scanning
[15:06] <Laurenceb> oh i guess if you sinc the camer to each line
[15:08] <Laurenceb> hard with webcams
[15:08] <Laurenceb> and excessive
[15:08] <Laurenceb> also slow
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[15:27] <mattltm> Hey all :)
[15:29] <NigeyS> hi mattltm
[15:30] <mattltm> Nice and quiet in here today :)
[15:30] <NigeyS> yups, theyre all busy bees i think
[15:32] <mattltm> Ary there any launches this weekend? I guess not with the current weather.
[15:33] <NigeyS> dont think so, i thinik natrium42 was due a lunch sometime today but he's in canada so no tracking from here
[15:33] <mattltm> Oh well. I'll play radio insted then :0
[15:34] <NigeyS> lol having fun with the ntx2 still ?
[15:34] <mattltm> Yup. Nearly got it I think.
[15:35] <mattltm> Just need to pop into get a 4K7 resistor and it should work.
[15:36] <mattltm> I should be able to pick some up at the canvy radio rally tomorrow.
[15:36] <mattltm> I love the rallys. You can get some great bits from them.
[15:36] <NigeyS> oh aye i bet
[15:37] <mattltm> I paid 50p for my weather station in November :)
[15:38] <NigeyS> :o
[15:41] <jkominar> Naturium42 - are you actually launching something today?
[15:43] <Laurenceb> http://www.gdtechuk.com/shop/product_info.php?cPath=5&products_id=6
[15:44] <Laurenceb> probably too noisey to pick up a laser
[15:45] <mattltm> I would think so :(
[15:53] Action: mattltm hears a large crash from the garden, looks out and sees a 2M/70cm collinear on the floor.
[15:53] <mattltm> Crap.
[15:53] <mattltm> That should be on the roof :(
[16:02] <NigeyS> eek
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[16:13] <fsphil> eek x2
[16:14] <fsphil> my own is bouncing around a bit up there
[16:14] <mattltm> Arse. Oh well. No real damage.
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[16:32] <fsphil> just heard there's a car upside down in a parking space down the town
[16:32] <fsphil> it wasn't *that* windy
[16:33] <mattltm> lol.
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[16:35] <SpeedEvil> fsphil: Great fun for students in the wind though.
[16:35] <SpeedEvil> 'No Officer, it was the wind'
[16:35] <fsphil> haha
[16:36] Action: Laurenceb read that as 'my owl is bouncing around a bit here'
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[16:36] <fsphil> it too
[16:37] <fsphil> woo: http://habhub.org/predict/#!/uuid=38d5063d3fbf5939af18dbfcaeb280b5861c065b
[16:37] <NigeyS> jcoxon ! hows pico ?
[16:38] <jcoxon> yeah its in one piece
[16:38] <NigeyS> bit of an overshoot there phil :p
[16:38] <NigeyS> great news :D
[16:38] <jcoxon> not automatically working - suspect a completely drained battery
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[16:38] <fsphil> if I launched with the same setup: http://habhub.org/predict/#!/uuid=ffe5e9c64f7cf1e1b76e98c656d7ba1da18a3861
[16:38] <NigeyS> ahh yeah possibly
[16:39] <NigeyS> bloody ell lol
[16:39] <fsphil> the cold might have got it
[16:39] <fsphil> the predictor ended that early -- I wonder how close to norway it gets
[16:39] <SpeedEvil> jcoxon: great!
[16:39] <fsphil> now that would be an epic flight
[16:39] <jcoxon> that said - i think picoatlas is not suitable for another flight
[16:40] <jcoxon> the seeeduino film is just too fragile
[16:40] <NigeyS> that fragile eh ?
[16:42] <jcoxon> and to tell the true an arduino pro mini would be as light and as good
[16:42] <jcoxon> http://www.sparkfun.com/products/9220
[16:42] <NigeyS> bah that was my idea :P
[16:42] <NigeyS> less than 2g in weight
[16:43] <jcoxon> NigeyS, its not a competition :-p
[16:43] <NigeyS> im out of the pico list anyway dude
[16:43] <fsphil> lol
[16:43] <Upu> hehe
[16:43] <Laurenceb> teensy usb
[16:43] <Upu> anyway I now have everything I need to launch apart from a working filler
[16:43] <Upu> which I'm working on
[16:44] Action: NigeyS sneaks a lead weight onto pico atlas 3 ;)
[16:45] <fsphil> I've discovered there are LDO's with logic level enable pins -- could be useful for power saving
[16:45] <jcoxon> hmmm i think i'm going to wait till the summer for pico atlas 3
[16:45] <NigeyS> well, i managed to kill atlas somehow so that has hindered my attempt
[16:45] <jcoxon> NigeyS, how?
[16:46] <NigeyS> no idea, i soldered the new vreg on as normal and its just goes funky, double flashes the led and thats it, cant talk to it or anything
[16:47] <jcoxon> hmmm
[16:48] <NigeyS> no shorts, no wrong routing of power or anything, it just wants to misbehave
[16:48] <jcoxon> what sketch did you put onto the atmega?
[16:48] <NigeyS> although the new vreg did give me back .2v of power, so it is working as we'd thought
[16:49] <NigeyS> its got the full flight sketch on there, radio , gps
[16:49] <jcoxon> hmmmm
[16:49] <jcoxon> can't reflash it?
[16:50] <NigeyS> nope, plug the ftdi in and it doesnt even pickup its connected, but yet it still has power according to the VM
[16:50] <jcoxon> NigeyS, does the ftdi loopback?
[16:51] <NigeyS> yes, i tried a loopback
[16:51] <jcoxon> does it work?
[16:51] <NigeyS> perfectly, which is why it pickled my brain for 2 days solid!
[16:51] <jcoxon> does it work now?
[16:52] <NigeyS> if i connect the loopback up, works fine, but if i try to run the board in "flight mode" with gps and radio connected as they should, then no, 2 led flashes and then nothing
[16:53] <jcoxon> wait a sec
[16:53] <jcoxon> does the board work when you don't have the gps connected?
[16:54] <NigeyS> yes, its only when gps and or ntx2 connect that it gives me trouble, but before the vreg change it was running fine
[16:54] <jcoxon> right
[16:54] <jcoxon> your vreg can't provide enough current
[16:54] <NigeyS> sorry to confuse :/
[16:55] <jcoxon> the lassen must be drawing too much when searching for sats
[16:55] <NigeyS> its not the lassen
[16:55] <jcoxon> okay well the other gps
[16:56] <NigeyS> not sure what it draws on sat searching, but when its got the lock it only uses 37 - 40ma
[16:56] <jcoxon> NigeyS, got a multimeter?
[16:56] <NigeyS> yuhuh, you're gonna ask me to check what its drawing arent you ?
[16:57] <jcoxon> yup
[16:57] <NigeyS> haha i knew it, oki give me 5 mins
[16:58] <fsphil> it's the only way to be sure
[16:58] <fsphil> that and nuking the site from orbit
[17:00] <mattltm> Can Dl-Fldigi output recived GPS strings via local tcp socket?
[17:00] <jcoxon> mattltm, it uses curl to upload them to the server
[17:01] <jcoxon> using POST
[17:01] <mattltm> ah. Is it able to putput them localy?
[17:01] <jcoxon> not really
[17:01] <jcoxon> you could of course change the code
[17:01] <fsphil> can it be queried via the xml thingy?
[17:01] <jcoxon> well the rx text can be
[17:01] <jcoxon> not the isolated strings themselves
[17:02] <fsphil> right
[17:02] <jcoxon> that said
[17:02] <mattltm> bSo you can get the whole string?
[17:02] <jcoxon> it wouldn't be difficult to do
[17:02] <jcoxon> mattltm, you can grab the data - but not hte isolated string
[17:02] <jcoxon> so you'd need to parse it
[17:02] <NigeyS> rightey, highest is 82ma settling at around 35ish now it has a lock
[17:03] <jcoxon> NigeyS, thats just the GPS?
[17:03] <NigeyS> just the locosys yup
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[17:03] <jcoxon> NigeyS, whats everything together draw?
[17:03] <NigeyS> let me hook the ntx2 up 2 secs
[17:06] <NigeyS> ok.. 64ma .. that doesnt seem right though
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[17:26] <natrium42> jonsowman, there?
[17:26] <natrium42> or Randomskk
[17:26] <natrium42> predictor is being silly --> http://habhub.org/predict/#!/uuid=240078a425698fc1f9803fedc15058d1c56335bf
[17:26] <jonsowman> heh
[17:26] <jonsowman> hang on
[17:26] <natrium42> desillify plz :)
[17:27] <jonsowman> try that
[17:27] <natrium42> gonna launch in a few hours
[17:27] <jonsowman> :)
[17:27] <jonsowman> nice
[17:27] <jonsowman> what are you launching?
[17:27] <natrium42> my brother's course project
[17:27] <natrium42> using SPOT2 for tracking
[17:28] <jonsowman> ah coool
[17:28] <natrium42> built a yagi yesterday, but didn't have time to put a quick tracker together...
[17:28] <jonsowman> s/ooo/oo/
[17:28] <jonsowman> fair enough :)
[17:28] <natrium42> go pro hd
[17:28] <natrium42> so yeah, no altitude :/
[17:28] <natrium42> supid SPOT2...
[17:29] <natrium42> predictor works now, cheers!
[17:30] <Dan-K2VOL> hi natrium42
[17:30] <natrium42> hey dan, how are you?
[17:31] <Dan-K2VOL> doing great, how's life in southern canada these days
[17:33] <jonsowman> natrium42: no problem
[17:33] <natrium42> dan, cold :P
[17:33] <Dan-K2VOL> you know I'm looking to hire an rf engineer, if you're looking to move a little farther south ;-)
[17:34] <natrium42> well, i am more in CS :)
[17:34] <natrium42> finishing masters in summer
[17:34] <Dan-K2VOL> ah gotcha, you'd done such nice hacking on the spot I think you've got some EE talent
[17:34] <Dan-K2VOL> I have no degree, and I've been doing our electronic product designs!
[17:35] <natrium42> where are you located right now?
[17:36] <natrium42> i have designed some products from scratch
[17:36] <natrium42> hardware, software, plastic
[17:36] Action: natrium42 is currently applying to jobs in cali
[17:36] <natrium42> my brother is studying there
[17:38] <Dan-K2VOL> Louisville KY
[17:38] <Dan-K2VOL> midwest US
[17:40] <natrium42> ah
[17:40] <natrium42> never been in the midwest
[17:41] <natrium42> hmm, i hope SPOT2's GPS doesn't crash and recovers when it gets below 18km
[17:42] <Dan-K2VOL> no reason to go to the midwest, it's like midwest canada I believe - very flat.
[17:42] <natrium42> http://habhub.org/predict/#!/uuid=550fe57c3ddf12a4e667753a165573b77b9e3a15
[17:42] <natrium42> :S
[17:43] <natrium42> i need ascent rate of 7 or 8 m/s
[17:43] <natrium42> to avoid cities
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[18:29] <jcoxon> natrium42, launching?
[18:29] <Dan-K2VOL> Natrium, you going to hack into that SPOT Communicator when it goes on sale?
[18:30] <Dan-K2VOL> I want that badly for a ultra long duration superpressure
[18:30] <jcoxon> evening Dan-K2VOL
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[18:31] <Zuph> Dan-K2VOL: You think the SPOT will be better than the digi?
[18:32] <jkominar> SPOT gps has high-altitude issues, doesn't it?
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[18:32] <Dan-K2VOL> fuck yes, software interface-wise and administratively
[18:32] <jcoxon> Zuph, Dan-K2VOL are orbcomm ever going to open up their payment issue
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[18:33] <Dan-K2VOL> Jkominar, that GPS can easily be replaced
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[18:33] <jcoxon> jkominar, the Spot2 has a ublox i think
[18:33] <Dan-K2VOL> Hi jcoxon
[18:33] <jcoxon> so in theory no
[18:33] <jcoxon> but i bet its not in high alt mode
[18:33] <jkominar> ah .. I see
[18:33] <jcoxon> so then there is a problem
[18:33] <Zuph> jcoxon: Heh, Answer Cloudy, Ask Again Later.
[18:34] <jcoxon> Zuph, fair enough its a shame - its quite limiting
[18:34] <Dan-K2VOL> They finally released pricing for texting via the Spot Communicator
[18:34] <Dan-K2VOL> $50 USD for 500 messages in a year
[18:34] <jcoxon> Dan-K2VOL, thats not bad at all
[18:34] <Dan-K2VOL> and you can buy another block if you burn thru those before 1 year
[18:34] <Dan-K2VOL> No, it's really good
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[18:35] <Dan-K2VOL> Still no word on where/when we can buy it
[18:36] <Dan-K2VOL> REI.com has it listed, but it's "backordered"
[18:36] <Dan-K2VOL> It's $150 USD
[18:36] <Dan-K2VOL> 8-o
[18:36] <jcoxon> Dan-K2VOL, we should collectively get natrium42 one and let him loose
[18:36] <jcoxon> he'll have it hacked pretty quickly :-p
[18:37] <Dan-K2VOL> I agree, I want that bluetooth module hacked off, and the plastic removed to see how light it can get
[18:45] <Zuph> Freaking Chinese New Year
[18:47] <Dan-K2VOL> You and me both Zuph
[18:48] <NigeyS> doesnt everything kinda grind to a halt for 2 weeks during cny ?
[18:48] <Dan-K2VOL> I've got a container hung up at the port of NY waiting for a damn packing slip emailed from china
[18:49] <Zuph> And I've got a package headed back to China because someone fat-fingered a zip code.
[18:51] <Dan-K2VOL> Mfer
[18:51] <Zuph> Seriously.
[18:51] <Zuph> And evidently I can't change the ship-to address from here, they have to change it.
[18:52] <Dan-K2VOL> &&.. Grrr
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[19:12] <SpeedEvil> Dan-K2VOL: An actual big container?
[19:15] <Dan-K2VOL> SpeedEvil, a partial container shipment, but it came in one yes
[19:16] <Dan-K2VOL> my shipment would have been set aside in a warehouse, racking up storage fees until the chinese factory comes back to work and sends the packing list to the shipping company they should have sent 3 weeks ago
[19:16] Action: SpeedEvil wants a nice container or two, to bury.
[19:16] Nick change: laurence_ -> Laurenceb_
[19:17] Action: Laurenceb_ just thought of the perfect use for the laser galvanometer
[19:17] <Laurenceb_> 3D laser doppler coherence velocity-meter
[19:18] <Zuph> SpeedEvil: Evidently, they don't last long while buried. They aren't built to design lateral forces from dirt piled against the sides, and only remain rust-proof in the open air.
[19:18] <Laurenceb_> for visualising flow in 3D for wind tunnels
[19:19] <SpeedEvil> Zuph: yeah - i was assuming not buried like that.
[19:20] <SpeedEvil> Zuph: Dig a trench, put the container in, but bank the earth away from the sides, and tank the banks.
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[19:21] <Laurenceb_> perfect for WW3
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[19:22] Action: Laurenceb_ is confused about if you could do doppler, optical coherence and beam steering all at once with the galvanometer
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[19:22] <SpeedEvil> hmm
[19:22] <Laurenceb_> would be awesome if it could be persuaded to work
[19:23] <SpeedEvil> How do you do doppler?
[19:23] <Dan-K2VOL> Nice article today on hackaday on reusing ultrasonic sensors from cars
[19:24] <SpeedEvil> interfere against the reference beam, and get a output out - but the doppler is tiny
[19:24] <SpeedEvil> err
[19:24] <SpeedEvil> doppler range
[19:25] <Laurenceb_> i think bringhness conservation is a pain
[19:25] <Laurenceb_> the photodiode has to look through the galvo as well
[19:25] <jonsowman> qsensors
[19:25] <jonsowman> oops. ignore that.
[19:25] <SpeedEvil> Or another galvo.
[19:25] <Laurenceb_> if you have a seperate scope for the detector it needs a reference from the laser injected as well
[19:26] <SpeedEvil> Yeah
[19:26] <Laurenceb_> too hard to match them
[19:26] <Laurenceb_> and due to the differing angles itd end up forming interference all over the focal plane
[19:26] <Laurenceb_> not a nice clean signal
[19:26] <SpeedEvil> hmm
[19:26] <Dan-K2VOL> Beamsplitters are commonly used for that aren't they?
[19:27] <SpeedEvil> getting the beamsplit cleanly is hard though
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[19:42] <Laurenceb_> i think it works if the photodiode looks through the glvo as well
[19:42] <Laurenceb_> but that means small signal
[19:45] <Laurenceb_> but its only short range and it could use a powerful laser, so i think its feasible
[19:46] Action: Laurenceb_ is slightly confused about the laser requirements for frequency domain oct
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[19:49] <Laurenceb_> i think the coherence lenght/2 is the depth a of z range it can work over
[19:49] <Laurenceb_> so standard lasers work nicely for a wind tunnel :P
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[19:54] <Laurenceb_> http://www.edmundoptics.com/onlinecatalog/displayproduct.cfm?productid=2717
[19:54] Action: Laurenceb_ feels strangely rich
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[20:19] <Dan-K2VOL> Anyone ever tried this 3-D scanning with a webcam and a handheld laser? http://www.david-laserscanner.com/
[20:20] <Dan-K2VOL> It supports a mode that requires no calibrated background pattern, allowing you to use a cheap cam to take 3D scans of large objects
[20:20] <Dan-K2VOL> Like balloons
[20:20] <Dan-K2VOL> Which would give you volume
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[20:23] <Laurenceb_> nice, but proprietory
[20:23] <Laurenceb_> theres som open source code for doing object reconstruction just by moving the camera/object about randomly
[20:24] <Laurenceb_> - with a calibration object in the field of view its not that hard to do
[20:24] <Laurenceb_> http://www.david-laserscanner.com/gfx/gallery/highlights/07-Living_Person_%28by_MagWeb%29.jpg
[20:25] <Laurenceb_> nice
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[20:48] <NigeyS> what's the difference between lasers? higher power, better scan or something? :|
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[21:13] <fsphil> that's pretty nifty
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[21:38] <Dan-K2VOL> Going to be working tonight on white star, anyone over there staying up late?
[21:40] <Zuph> Dan-K2VOL: Do I count :-p
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[21:46] <Darkside> hi ju
[21:46] <Darkside> juxta_:
[21:46] <juxta_> morning Darkside :)
[21:48] <Darkside> ahh now i see wher you are
[21:48] <Darkside> grant is driving
[21:49] <juxta_> yes, the very grandest of hotels
[21:49] <juxta_> the mt gambier grand central motel
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[21:49] <juxta_> grant is in his room next door to me eating breakfast
[21:49] <Darkside> wait old data
[21:49] <Darkside> heh
[21:50] <NigeyS> wii fits are dangerous!!!!!
[21:50] <Darkside> ahh yes i see now
[21:50] <Darkside> just got street view up
[21:51] <Darkside> hehehe
[21:52] <juxta_> I'm sure my cat is taking advantage of my absense to destroy everything that's made of fabric in my house
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[21:52] <Darkside> i do like APRS, makes it very easy to stalk people
[21:52] <Darkside> heh
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[21:53] <fsphil> evil cat huh?
[21:54] <juxta_> i think it is
[21:54] <juxta_> is natrium42 still launching today?
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[21:58] <jonsowman> juxta_: he said "in a few hours"
[21:58] <jonsowman> but that was a few hours ago
[21:58] <juxta_> oh, hehe
[21:58] <juxta_> do you know where it's being tracked?
[21:58] <juxta_> I think he said he was just going to use the spot?
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[21:59] <juxta_> brb I'm off in search of OJ
[22:01] <juxta_> actually it seems it's time to leave
[22:03] <Darkside> lol ok
[22:03] <Darkside> cya
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[23:02] <NigeyS> hey Zuph
[23:03] <Zuph> Hola NigeyS
[23:03] <Zuph> How's your evening?
[23:03] <NigeyS> soldering through hole resistors to smd pads is quite fun!
[23:03] <Zuph> hah
[23:03] <NigeyS> it's good, but ask in 1 minute when ive checked the solderings good !
[23:06] <NigeyS> w00t all looks good multimeter love me tonight
[23:07] <Zuph> heh
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[23:25] <NigeyS> hey mattltm
[23:26] <mattltm> Hey :)
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[23:32] <fsphil> Inductance is weird -- reading about it in the intermediate license book
[23:33] <SpeedEvil> Inductors are capacitors rotated 90 degrees
[23:33] <Darkside> haha
[23:33] <SpeedEvil> Swap the I and V
[23:33] Action: fsphil 's head explodes
[23:33] <Darkside> V = Ldi/dt
[23:36] <jonsowman> 180 degrees really
[23:37] <jonsowman> L = jwt; C = (jwC)^(-1)
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[23:38] <fsphil> hmm, it's more complicated than I thought
[23:39] <jonsowman> fsphil: in what way?
[23:39] <fsphil> oh I'm not good with the maths yet
[23:42] <SpeedEvil> you can do most of it with vector diagrams and a protractor
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[23:56] <Lunar_Lander> hello
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[00:00] --- Sat Feb 5 2011