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[05:51] <juxta-> is the lat/long component of a GGA fix in NMEA always the same number of chars?
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[07:45] <SpikeUK> Morning all! Just popped in to say that I'm off to http://www.barcamplondon.org/ in a few mins time. I'll be giving a 20-mins presentation about High-Alt Ballooning (as if I know ;-)) either tody or tomorrow. I'll be handing out http://moo.com with links to here and the wiki so you may find some strangers here at some time. Be back later!
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[09:48] <MikeMc> morning
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[09:57] <edmoore> morning MikeMc
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[10:12] <MikeMc> and what a lovely wet grey morning it is too
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[11:18] <SpeedEvil> http://www.yr.no/verdata/1.5338672 hmm - north sea gribs from norway
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[13:14] <edmoore> Randomskk: ping
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[14:03] <SpikeUK> I'm back
[14:07] <SpikeUK> Did my HAB talk at BarCampLondon at the first session - met up with phatmonkey - what are the chances
[14:08] <SpeedEvil> Good reception?
[14:09] <edmoore> SpikeUK: great news I 2nd SpeedEvil's q
[14:10] <SpikeUK> Good reception of what?
[14:10] <SpeedEvil> Obviously your mobile phone, while you were talking.
[14:12] <SpikeUK> Sorry! There is Wifi here. I would have been difficult to rx 70cms here - not poss to get outside
[14:12] <edmoore> i think he meant if the talk got a good reception from the audience
[14:15] <SpikeUK> D'oh! Sorry! In tech mode ;-) Talk went well. Will prob do it again tomorrow for those that missed it
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[14:54] <SpeedEvil> http://i.imgur.com/cKc4n.gif - that perfect costume
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[17:15] <jcoxon> evening all
[17:17] <SpeedEvil> evening
[17:22] <Jon_Apex> hi
[17:27] <jcoxon> hmmm early warning launch window perhaps on thurs
[17:33] <SpeedEvil> jcoxon: Are the gribs provided by yr.no interesting?
[17:34] <jcoxon> scratch that
[17:34] <jcoxon> JS is up at 200mb
[17:34] <jcoxon> which gribs?
[17:35] <jcoxon> gribs i get are daily
[17:39] <SpeedEvil> http://www.yr.no/verdata/1.5338672
[17:40] <jcoxon> oh i've never seen them before
[17:41] <jcoxon> i use gribs from noaa
[17:41] <SpeedEvil> Dunno about relative data quality
[17:41] <jcoxon> i'm not sure those gribs will cover the uk
[17:41] <jcoxon> guess we are Nord-Europe
[17:43] <SpeedEvil> They seem quite widespread - in their general data products.
[17:43] <SpeedEvil> http://www.yr.no/place/United_Kingdom/Scotland/Glenrothes/varsel.xml - forex
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[18:04] <jcoxon> will check it out
[18:07] <jcoxon> bbl
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[20:29] <Randomskk> hi edmoore
[20:29] <edmoore> hi
[20:29] <Randomskk> you pinged me?
[20:29] <Randomskk> also those parts for my pcbs arrived
[20:30] <edmoore> oh, was just goping to say that websdr link should be good now as there's a contest going on
[20:31] <edmoore> airwaves should be heaving
[20:31] <Randomskk> oh yea, I heard about that
[20:31] <Randomskk> cuws have a phased array setup right?
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[20:45] <edmoore> Randomskk: yep
[20:45] <edmoore> 4 verticals and a switching box
[20:46] <Randomskk> neat.
[20:46] <Randomskk> heh, I'm trying to work out how I can play off my stm32 board as related to amateur radio
[20:46] <Randomskk> silly intermediate license requirement
[20:46] <SpeedEvil> Randomskk: SDR
[20:47] <Randomskk> could do
[20:47] <Randomskk> could be complicated
[20:47] <SpeedEvil> what's the requirement?
[20:47] <Randomskk> it does have two fairly decent ADCs and a DAC and timers and stuff
[20:47] <Randomskk> it has to be "related to amatuer radio" and soldered by me
[20:47] <Randomskk> that's another catching point - does reflow soldered by me even count? :P
[20:47] <SpeedEvil> FSK modem/demodem?
[20:48] <Randomskk> modulator-demodulator / demodulator-demodulator? :P
[20:48] <SpeedEvil> you're building a board?
[20:48] <Randomskk> I already had some PCBs made up for this ARM carrier board
[20:48] <Randomskk> oh that reminds me
[20:48] <SpeedEvil> ah
[20:48] <Randomskk> edmoore: what do you think of a glider on a balloon to fly back with data?
[20:49] <Randomskk> glider would work way better than a quadcopter for returning to launch site
[20:49] <SpeedEvil> ask laurenceb
[20:49] <edmoore> Randomskk: please please do it
[20:49] <SpeedEvil> problem is that it doesn't really work very much better.
[20:49] <Randomskk> edmoore: was meeting up with one of the leaflabs people today
[20:49] <Randomskk> they want to do something using maple as an example project
[20:49] <edmoore> who be they?
[20:49] <Randomskk> http://leaflabs.com MIT startup
[20:49] <Randomskk> doing an stm32 arduino board
[20:50] <Randomskk> trying to do it right, vs the two prior ones
[20:50] <SpeedEvil> You need quite a large l/d and high penetration velocity to do that right
[20:50] <SpeedEvil> airspeed
[20:50] <Randomskk> and then shortly afterwards an fpga+stm32 board
[20:50] <Randomskk> both with the intention of making getting into stm32 and fpga development as easy as arduino did for avr
[20:50] <SpeedEvil> so very low drag high speed
[20:50] <edmoore> do you remember any names?
[20:50] <Randomskk> I was speaking to arjun today, he's a 3rd year mathmo
[20:50] <edmoore> but yes, a glider would be/is a very cool project, and it's about time someone did it
[20:50] <SpeedEvil> I wish stm32 came with a sdram controller
[20:50] <SpeedEvil> yes.
[20:51] <SpeedEvil> I agree.
[20:51] <Randomskk> SpeedEvil: doesn't it? FSMC
[20:51] <SpeedEvil> note the S
[20:51] <Randomskk> ah.
[20:51] <SpeedEvil> :/
[20:51] <Randomskk> edmoore: and then there are a few others, some of them came here for a year I think and some went to MIT for a year and are usually here
[20:51] <edmoore> ok
[20:51] <Randomskk> they are in #leafblowers on this network
[20:52] <Randomskk> but anyway arjun/I should be getting a few maples in a week or so, before release, to play with
[20:52] <edmoore> have you seen 'a canadian boffin' balloon glider?
[20:52] <edmoore> also check out the GPS boomerang
[20:52] <SpeedEvil> Glider is very cool. Getting it to come back rapidly is hard.
[20:52] <edmoore> please do it. I want to do it.
[20:52] <Randomskk> gps boomerang or the glider?
[20:52] <Randomskk> it would be pretty cool
[20:52] <SpeedEvil> Ideally you'd want something that could do 30MPH at a good l/d minimum, so it could make 15 at least over headwinds
[20:53] <Randomskk> SpeedEvil: it seems like a glider at 30km could manage to go quite far in order to get back to launch
[20:53] <SpeedEvil> Randomskk: Sure.
[20:53] <Randomskk> what's the hard bit?
[20:53] <Randomskk> or hardest anyway :P
[20:53] <SpeedEvil> Randomskk: It can go - say - 300km - at 10:1 l/d
[20:53] <edmoore> depends on what you do in the first 20km of descent
[20:54] <SpeedEvil> Randomskk: neglecting the wind
[20:54] <SpeedEvil> Randomskk: and you can't do that of course
[20:54] <Randomskk> heh true
[20:54] <Randomskk> but 300km is a long long way
[20:54] <Randomskk> how far do the balloons end up displaced most of the time?
[20:54] <SpeedEvil> Randomskk: If you have a speed of 30mph, and the wind is going 20mph - that's now 100km
[20:55] <Randomskk> SpeedEvil: yea but if the wind is with you that's now 500km
[20:55] <SpeedEvil> Sure.
[20:55] <edmoore> Randomskk: 100km wouldn't be unreaonable
[20:55] <edmoore> infact fairly standard
[20:55] <SpeedEvil> But the wind is rarely with you - as you've just been blown that way
[20:55] <Randomskk> true
[20:56] <Randomskk> hmmm
[20:56] <Randomskk> unless you were more interested in making it recoverable vs back to base
[20:56] <Randomskk> depends which way the wind was going
[20:56] <Randomskk> back to base would be the coolest by far though
[20:56] <SpeedEvil> The funky thing to do would be a superpressure balloon shaped like an aerofoil that ascended vertically, even in winds.
[20:57] <edmoore> gah, vim is so good
[20:57] <edmoore> :.! date inserts the date into your current buffer
[20:57] <Randomskk> it is awesome
[20:58] <edmoore> :earlier 5m takes you back to five minutes ago. glorious
[20:59] <Randomskk> :later 2w would be superior
[20:59] <Randomskk> shame text editors can't quite do that yet
[21:00] <edmoore> :later thesis-deadline would be preferble
[21:01] <Randomskk> haha true
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[21:16] <edmoore> greetings rjharrison
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[21:20] <SpikeUK> rjharrison edmoore
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[21:21] <SpikeUK> Evening all!
[21:21] <edmoore> SpikeUK sir
[21:21] <RocketBoy> yo
[21:24] <SpikeUK> edmoore - not sure if you around earlier, but I met up with phatmonkey
[21:24] <edmoore> ah cool. how is he?
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[21:25] <SpikeUK> Taller, younger, and cooler than me ;-)
[21:25] <edmoore> :)
[21:26] <SpikeUK> He's currently drinking beer and being a geek
[21:26] <edmoore> like all good geeks
[21:26] <edmoore> i am watching 'hackers', waiting for 'the thick of it', drinking a cobra and battling simulink
[21:27] <SpikeUK> simulink? Matlab?
[21:28] <edmoore> yeah. trying to build Hobble in it
[21:29] <edmoore> I'd rather just get the hardware tbh ;)
[21:31] <SpikeUK> hi ed! ben here
[21:31] <SpikeUK> haven't been that involved recently ;)
[21:31] <edmoore> hi ben
[21:31] <edmoore> how's bcl?
[21:34] <SpikeUK> edmoore - Spike here again - Ben's had to go - sorry!
[21:44] <SpikeUK> Has anyone any experience of multi-threading Arduino or AVR ?
[21:48] <edmoore> i think there are a couple of tiny rtos/schedulers for gcc-avr
[21:49] <edmoore> avrfreaks would definitely be the place to look
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[21:49] <Laurenceb> hello
[21:54] <SpikeUK> edmoore - thanks!
[21:55] <SpikeUK> Laurenceb - good evening!
[21:55] <edmoore> their forum is alone a reason to use avrs
[21:57] <Laurenceb> avr-freaks?
[21:57] <Laurenceb> its good :D
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[22:44] <MikeMc> Evening
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