highaltitude.log.20100330

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[00:30] <edmoore> ok
[00:31] <edmoore> so as his ham callsign, John has picked M0OBS
[00:31] <natrium42> ahahaha
[00:31] <natrium42> man boobs XD
[00:48] <natrium42> edmoore, how is batcave? did you set everything up?
[00:48] <edmoore> yep, it's pretty operational now
[00:51] <natrium42> cool
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[01:01] <jonsowman> sorry for the join/quit spam guys
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[01:03] <Laurenceb> hi again
[01:03] <Laurenceb> my tiger trainer RC plane got stolen :(
[01:04] <ben_apex> yes, sorry for the spam. Just coming to grips with irc
[01:05] <Laurenceb> there goes that UAV plan
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[01:30] <SpeedEvil> :/
[01:31] <natrium> :\
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[05:23] Action: SpeedEvil is woken by the wind.
[06:09] <earthshine> morning
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[09:01] <earthshine_> morning
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[09:03] <jonsowman> good morning earthshine
[09:03] <jonsowman> oh... gone
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[09:04] <jonsowman> hi earthshine_
[09:04] <earthshine_> hi
[09:06] <earthshine_> bloody weather
[09:07] <jonsowman> mm i know
[09:09] <jonsowman> grrr hosting companies
[09:09] <earthshine_> What's up?
[09:10] <jonsowman> my current one is useless
[09:10] <jonsowman> phone number on website doesnt work, "24/7" support ticket system from which I havent had a response in 3 days
[09:11] <earthshine_> WHuch one are you with ?
[09:11] <earthshine_> *which
[09:12] <jonsowman> http://www.ifusehosting.com
[09:12] <jonsowman> mainly because i used to know someone there
[09:12] <jonsowman> but it's been acquired by another company now and support has become awful
[09:12] <earthshine_> i've used powweb for years
[09:13] <earthshine_> can't complain
[09:13] <jonsowman> i'm pretty sure i'm going to move to linode
[09:13] <jonsowman> but ifuse contract runs out in august
[09:37] <jonsowman> earthshine_: hows the orion video editing going
[09:38] <earthshine_> I finished the editing last night
[09:39] <jonsowman> :)
[09:39] <jonsowman> nice one
[09:39] <earthshine_> I added in the titles and overlays
[09:39] <earthshine_> All i need to do tonight is some colour correction and then render it and it's done
[09:39] <earthshine_> So hopefully by tonight i'll be able to post it up for viewing
[09:39] <earthshine_> it's about 10 mins long
[09:40] <jonsowman> lovely
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[11:04] <haptiK> jonsowman: more like refusehosting.com ?? or ?
[11:05] <haptiK> new business model
[11:06] <jonsowman> haptiK: haha absolutely
[11:06] <jonsowman> they used to be quite good but they were aquired recently by another company and have become terrible
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[11:52] Nick change: tty2 -> tty1
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[11:53] <Lunar_Lander> hello
[11:56] <haptiK> hello
[11:56] <earthshine_> hi
[11:56] <haptiK> do you want to play a game?
[11:56] <Lunar_Lander> what kind of game?
[11:57] <Lunar_Lander> like "How much time do we have left on this world?"
[11:57] <haptiK> How about Global Thermonuclear War?
[11:57] <haptiK> sorry was just quoting "Wargames"
[11:58] <Lunar_Lander> ah ok :P
[11:58] Action: haptiK is overtired today, sorry.
[11:58] <Lunar_Lander> no problem
[11:58] <Lunar_Lander> LHC AT 3.7 TeV!
[11:59] <Lunar_Lander> wait, bogus
[11:59] <Lunar_Lander> 3.5
[12:04] <Lunar_Lander> First time in the history!!!!!!!!!!!! World record!!!!!!!!
[12:04] <Lunar_Lander> vor 3 Minuten via web Experiment have seen collisions!!!!!!!!!!!
[12:04] <Lunar_Lander> vor 3 Minuten via web
[12:05] <haptiK> ah sehr gut
[12:06] <Lunar_Lander> that's from the CERN Twitter
[12:06] <haptiK> i assumed as much
[12:06] <Spacor> http://twitter.com/CERN/
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[12:08] <rjharrison_work> .
[12:08] <rjharrison_work> Humm I can't see who os onlin
[12:08] <rjharrison_work> e
[12:09] <Lunar_Lander> hi rjharrison_work
[12:09] Action: SpeedEvil is.
[12:09] <rjharrison_work> ahh fixed it
[12:09] <rjharrison_work> Hi Lunar_Lander SpeedEvil
[12:09] <Lunar_Lander> we did it!
[12:09] <Lunar_Lander> LHC collisions at 3.5 TeV
[12:10] <earthshine_> Noooooooooooooooooooo!!!!!!!!!!
[12:11] <Lunar_Lander> ?
[12:11] <earthshine_> I see a mushrom cloud!!
[12:11] <earthshine_> OMG!!
[12:12] <earthshine_> The world is about to end !
[12:12] <grumbel_> I see the black hole arising. / I see trouble on the way. / I see earthquakes and lightnin'. / I see bad times today.
[12:15] <earthshine_> Not quite 3.7TeV yet
[12:15] <Lunar_Lander> yea, that was my mistake
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[12:16] <earthshine_> sshhh Ed is here
[12:16] <edmoore> ?
[12:16] <earthshine_> Oh Hi Ed
[12:16] <earthshine_> Didn't see you there
[12:16] <haptiK> my ex-line manager used to work for CERN
[12:16] Action: edmoore checks today's logs
[12:17] <haptiK> he worked on the europeun datagrid project
[12:17] <haptiK> smart mofo.
[12:17] Action: earthshine_ whistles innocently
[12:17] <edmoore> Lunar_Lander: do you work at CERN?
[12:20] <Lunar_Lander> nope
[12:23] <earthshine_> I don't work at CERN either
[12:32] <Laurenceb> we know cuz your not dead yet
[12:33] <Lunar_Lander> xD
[12:34] Action: Laurenceb is searching around on the nets for anyone selling http://www.hooked-on-rc-airplanes.com/images/rc-trainer-planes14.jpg
[12:34] <Laurenceb> house got burgled
[12:34] <Laurenceb> they stole that + a cooker and a hot water tank
[12:34] <Laurenceb> odd combination
[12:35] <Laurenceb> unfortunately they are probably too stupid to find the right place to sell it
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[12:42] <Lunar_Lander> bbl
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[12:50] <Laurenceb> or maybe too clever - more likely to get caught that way
[13:00] <Laurenceb> http://i.imgur.com/MICci.png <- its now got M3 mounting holes - takes the overall size to 70x40mm
[13:00] <Laurenceb> end up around $1 per board if I order 80 or so
[13:01] <Randomskk> looks pretty sweet
[13:02] <Laurenceb> needs a decent silkscreen - also I think I'll break up the ground planes a bit
[13:03] <Laurenceb> seperate the SMPS area
[13:03] <Laurenceb> and seperate the analogue from the digital
[13:03] <Laurenceb> also a cutaway area on the bottom below the smps that you can use to loop cables through to the back of the board
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[13:07] <Randomskk> yea
[13:08] <Randomskk> there's a script in the ulp dir that'l convert tplace etc layers to a new layer so you can modify it really easily
[13:08] <Randomskk> I like doing that then getting just what I want for silkscreen
[13:08] <Randomskk> what it comes up with by default tends to look like a confused mess
[13:08] <Randomskk> also you could probably extend the board to the edges of the holes without additional cost (in fact possibly less as a rectangular board can be v-scored) and have space for silkscreen there
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[13:15] <earthshine_> LaurenceB is there a write up of this board anywhere? What it can do, etc. ?
[13:17] <Laurenceb> Randomskk: yeah but you can cut off those D shaped mounts to make it smaller
[13:17] <Laurenceb> yea I have that script :P
[13:17] <Randomskk> ah fair enough
[13:17] <Laurenceb> earthshine_: IMU with magno, stm32, 8 x servo IO, smps, 434 comms
[13:17] <Laurenceb> and gps
[13:31] <Laurenceb> oh and barometric pressure and RS-485
[13:31] <SpeedEvil> exposed I2€?
[13:31] <SpeedEvil> c
[13:31] <Laurenceb> then theres an I2C bus that can connect to daughtboards
[13:32] <SpeedEvil> sd card?
[13:32] <SpeedEvil> is this the stm that can do usb
[13:32] <Laurenceb> thinking airspeed, air temp and angle of attack board using an attiny24 and "warm pt100" sensor and hall effect sensor and flap for AOA
[13:32] <Laurenceb> yeah sd card, all the goodies apart from USB
[13:33] <SpeedEvil> hmm
[13:33] <Laurenceb> to be honest I didnt see the point in usb, use the hardware bootloader
[13:33] <SpeedEvil> plug-in and download
[13:34] <SpeedEvil> ass torage
[13:34] <Laurenceb> theres a JST connect for connecting a FTDI adaptor
[13:34] <SpeedEvil> mass
[13:34] <Laurenceb> heh
[13:34] Action: Laurenceb points to his trousers
[13:34] <Laurenceb> I guess mass storage would be a nice feature, maybe on revision 2
[13:35] Action: SpeedEvil ponders changing topic to high altitude boating.
[13:35] <SpeedEvil> chucking it down here.
[13:35] <Laurenceb> as itd probably need a larger stm to get enough pins
[13:35] <Laurenceb> unless you lost some servos stuff
[13:36] <Laurenceb> with the present version you can pipe the data through the uart if needs be
[13:36] <Laurenceb> or just remove the card - mass storage means a big code overhead so probably an stm with more flash as well
[13:37] <SpeedEvil> true
[13:37] <SpeedEvil> virtual machine + os on card.
[13:37] <Laurenceb> oh well gtg, be back later
[13:37] <SpeedEvil> wave
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[14:02] <rjharrison_work> hey natrium42
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[14:11] <epictetus> a
[14:12] <earthshine_> b
[14:14] <Randomskk> cee
[14:14] <rjharrison_work> s/cee/cde
[14:17] <Randomskk> I was going phonetically
[14:19] Nick change: N900evil -> SpeedEvil
[14:27] <earthshine_> We should have a competition
[14:27] <earthshine_> Launch 3 or 4 balloons on the same day at the same time at a lcoation of your own choosing
[14:27] <earthshine_> and whoever gets highest wins
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[14:28] <Randomskk> 1) fly a nailbomb
[14:28] <Randomskk> 2) pop other balloons
[14:28] <Randomskk> 3) ...
[14:28] <Randomskk> 4) profit!
[14:28] <earthshine_> lol
[14:28] <Randomskk> 5) duck and cover
[14:42] <earthshine_> edmoore: ping
[14:42] <earthshine_> Randomskk: you might know
[14:42] <earthshine_> That tube that ed uses to fill the balloons - do you know it's internal diameter ?
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[15:07] <Lunar_Lander> hello
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[15:10] <DaveyC> hey Lunar_Lander :)
[15:10] <Lunar_Lander> how's life?
[15:10] <DaveyC> can't complain. Got a lazy day today.. Spending it playing around on hamsphere :) How about you sir?
[15:11] <Lunar_Lander> well I got an e-mail that the university library has a copy for me
[15:11] <Lunar_Lander> so I fetched it
[15:11] <Lunar_Lander> when I came home, I had a new e-mail that an ordered book is now there
[15:11] <Lunar_Lander> that was quite annoying
[15:12] <DaveyC> ahhhh that's life eh? hehe
[15:12] <LazyLeopard> They're playing yo-yos with you...
[15:13] <Lunar_Lander> yea
[15:13] <Lunar_Lander> but I got the article "Operation Stratomouse" from "Military Medicine"
[15:14] <Lunar_Lander> that is kind of the fist HAB "Blog" from 1955
[15:14] <Lunar_Lander> because the principal investigator wrote down his experiences there
[15:14] <Lunar_Lander> it has a nice catchline
[15:15] <Lunar_Lander> "A Balloon's Voyage is as unpredictable as a tornado's course"
[15:16] <Lunar_Lander> be back in a minute
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[15:20] <earthshine_> Operation Stratomouse - sounds like a good name for a new HAB project
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[15:30] <rjharrison_work> You'll have animal rights on to you
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[15:34] <earthshine_> Well I am sending around 100 creatures up on my payload
[15:35] <earthshine_> to suffer the near vacuum, extreme temperatures and lethal UV levels
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[15:49] <Lunar_Lander> back again
[15:51] <earthshine_> wb
[15:54] <Lunar_Lander> thanks
[15:54] <Lunar_Lander> and hello superkuh
[15:54] <Lunar_Lander> are you from Germany too?
[15:55] <superkuh> I am not.
[15:56] <Lunar_Lander> ah ok
[15:56] <Lunar_Lander> nice to meet you anyway :)
[15:58] <natrium42> http://wso.williams.edu/orgs/spencer/newsite/SpencerCluster/supercow.JPG
[15:58] <earthshine_> SUPERCOW !!!
[15:58] <natrium42> yes!
[15:59] <Lunar_Lander> oh man
[15:59] <Lunar_Lander> it's over already
[15:59] <Lunar_Lander> LHC ramps down
[15:59] <earthshine_> and the Earth is still here
[15:59] <Lunar_Lander> yeah!
[16:00] <natrium42> Lunar_Lander, but they need to shut it down for 1 year and rebuild to reach 7 TeV
[16:00] <Lunar_Lander> why?
[16:02] <russss> they'll likely do another fill today
[16:03] <natrium42> Lunar_Lander, they need to gather data to rebuild the connections or something
[16:03] <natrium42> or it will fail again like last time
[16:04] <Randomskk> I think the gathering data today is just because they really want to
[16:04] <natrium42> it can only run at about half power
[16:04] <Randomskk> get some actual data, that is
[16:04] <Randomskk> it's always off over winter because the electricity is so expensive
[16:05] <Randomskk> so they're using the winter break and some time around it to redo every single electrical power connection to the electromagnets, as I understand it
[16:05] <natrium42> energy is more expensive in winter??
[16:05] <Randomskk> with higher current limit connectors
[16:05] <Randomskk> natrium42: all the locals use it for heating
[16:05] <Randomskk> demand goes up
[16:05] <Randomskk> price goes up
[16:05] <Randomskk> switzerland etc
[16:05] <russss> they're doing 7TeV physics till late 2011
[16:05] <Randomskk> and it uses a lot of energy
[16:05] <natrium42> airconditioning uses more power than heating though
[16:05] <russss> then they'll shut down for a year to re-certify the magnets for operating at 14TeV levels
[16:06] <Randomskk> dunno if aircon is that prevalent
[16:06] <Randomskk> certainly in the UK residental aircon is almost unheard of anywhere I've been
[16:06] <natrium42> it's here, but not in europe i guess
[16:06] <natrium42> power usage is higher in summer here, i would say
[16:06] <Randomskk> yea, look at the NYC blackout
[16:06] <Randomskk> summer
[16:06] <Randomskk> air con on high
[16:06] <natrium42> :P
[16:06] <Randomskk> power lines get hot, expand, sag
[16:06] <Randomskk> touch some trees, short to earth
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[16:06] <natrium42> i liked the blackout
[16:07] <Randomskk> some trees that haven't been cut in a while
[16:07] <Randomskk> local power station overloads, fails over to other nearby one
[16:07] <Randomskk> nearby one can't handle its own load plus the failure of the first....
[16:07] <Randomskk> brace for clusterfuck
[16:07] <natrium42> hehe
[16:09] Action: natrium42 sells a "free energy" device to CERN
[16:09] <Lunar_Lander> xD!
[16:09] <natrium42> i think they know better
[16:09] <Randomskk> you'd hope so
[16:12] Action: SpeedEvil hopes that the unexpected happens.
[16:13] <SpeedEvil> for example, collisions at 8.3TeV produce pineapples.
[16:13] <Randomskk> would be impressive
[16:15] <natrium42> forbidden pineapples!
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[16:19] Nick change: edmore -> edmoore
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[16:22] <natrium42> the cue word for edmoore
[16:23] <rjharrison_work> lol
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[16:23] <natrium42> aww
[16:24] <Lunar_Lander> xD
[16:24] <earthshine_> Randomskk
[16:24] <Randomskk> pong
[16:24] <earthshine_> Do you know the internal diameter of the pipe used to fill the balloons ?
[16:25] <Randomskk> nope, sorry, but I'd guess 30mm ish?
[16:25] <Randomskk> maybe a bit bigger
[16:25] <Randomskk> probably best to ask ed when he pops up next
[16:25] <Randomskk> uh
[16:25] <earthshine_> I want to fill a balloon with pin pong balls and they are 40mm diameter
[16:25] <earthshine_> so at burst they will be dispersed
[16:25] <Lunar_Lander> don't abuse balloons!
[16:25] <Lunar_Lander> xD
[16:25] <Randomskk> I suspect they'll fit
[16:26] <Randomskk> are you sure you can do that though
[16:26] <Randomskk> there are legal requirements about releasing stuff from balloons to do with parachutes
[16:27] <earthshine_> Surely a haarmless and lightweight ping pong ball wouldn't fall foul of some stupid reg ?
[16:27] <Randomskk> probably would in that they'd never have thought of people wanting to release ping pong balls when they wrote the thing
[16:27] <earthshine_> or are you saying i would have to fit each one with it's own parachute ?
[16:27] <Randomskk> you could potentially get away with doing it anyway and it'd be unlikely to cause problems, but worth checking
[16:28] <earthshine_> it was thinking of writing a message on each ping pong ball with a tel. number and email address and then seeing where they all end up
[16:29] <Randomskk> probably mostly end up unfound in fields
[16:29] <Randomskk> use biodegradable balls if you did that
[16:29] <Randomskk> seems like a goal that'd be accomplished just as well by some printed bits of card or such?
[16:30] <earthshine_> i was thinking of using steel ballbearings so they'd last a while
[16:31] <Randomskk> steel ball bearings on what?
[16:31] <earthshine_> 40mm solid core steel balls
[16:31] <Randomskk> ah
[16:31] <Randomskk> so plastic outer and steel inner?
[16:31] <Randomskk> seems like that would be lethal if it hit you
[16:31] <earthshine_> instead of ping pong balls - with messages etched into them
[16:31] <Randomskk> ah
[16:31] <Lunar_Lander> yeah
[16:31] <earthshine_> lol i'm joking
[16:31] <Lunar_Lander> that is a no go
[16:31] <Randomskk> yea
[16:31] <earthshine_> actually the card idea isn't a bad one
[16:31] <Randomskk> I think 40mm solid steel balls would probably be pushing the regulatatory limits a little
[16:32] <Lunar_Lander> 1 mm diameter is about the maximum that is allowed
[16:32] <earthshine_> at least they are bio-degradable
[16:32] <Randomskk> http://www.wolframalpha.com/input/?i=density+of+steel+*+%284%2F3%29+*+pi+*+%2840mm%29%C2%B2
[16:32] <Randomskk> uh
[16:32] <Randomskk> that should obviously be a ³ not a ²
[16:32] <Randomskk> 2.1kg per ball
[16:33] <Randomskk> sweet
[16:33] <Randomskk> that would go a good way into the ground when it hit :P
[16:33] <earthshine_> Cool - i wonder what sizxed balloon i'd need for 100 steel balls
[16:33] <Randomskk> pretty huge
[16:33] <earthshine_> i'll email rocketboy and see if he has them in stock
[16:33] <Randomskk> 210kg
[16:33] <Randomskk> payload mass
[16:34] Action: natrium42 is listening to AC DC - Big Balls.mp3
[16:34] <Randomskk> http://www.wolframalpha.com/input/?i=210kg+%2F+%28density+of+air+-+density+of+helium%29
[16:34] <earthshine_> Printed cards in a hopepr with a servo controlled sliding door
[16:34] <Randomskk> 1.9E8 cm³ helium
[16:34] <earthshine_> *hopper
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[16:35] <earthshine_> that's a lot of helium
[16:35] <Randomskk> 191400 litres of helium
[16:35] <SpeedEvil> earthshine_, paper tape and cutter
[16:35] <Randomskk> or 191m³
[16:35] <Randomskk> or 2.6 times the volume of a 1A freight container
[16:35] <Randomskk> about 3 large freight containers of helium
[16:35] <Randomskk> to loft 100 40mm steel balls
[16:35] <earthshine_> that's less than i thought
[16:36] <Randomskk> that's 40mm radius actually though
[16:36] <Randomskk> so less
[16:36] <earthshine_> I wonder how far they would go into the ground
[16:36] <Randomskk> hmm
[16:36] <Randomskk> wolfram gives 3.6m radius of a sphere to hold that much helium
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[16:37] <earthshine_> what you need is a metal that is a liquid at sub zero temperatures but becomes solid above
[16:37] <earthshine_> Then you can just hose it out of a bottle
[16:37] <earthshine_> would make an effective balloon lofted weapon
[16:37] <SpeedEvil> earthshine_, .1mm*20mm*20mm*paper density = 40mg or so. 20000 per kilo
[16:38] <Randomskk> earthshine_: and engrave it how?
[16:38] <earthshine_> damn
[16:38] <Randomskk> or just dump solid metal on people
[16:38] <Randomskk> SpeedEvil: probably want cardstock for a bit more durability
[16:38] <Randomskk> 160gsm at least
[16:38] <SpeedEvil> Randomskk, dunno.
[16:38] <Randomskk> harder to cut in flight though
[16:39] <earthshine_> a hopper with a sliding or hinged door would be simple
[16:39] <Lunar_Lander> (17:37:19)<earthshine_>what you need is a metal that is a liquid at sub zero temperatures but becomes solid above
[16:39] <SpeedEvil> Randomskk, given that you get lots of flimsy stamp sized for cardstock
[16:39] <Lunar_Lander> that is impossible
[16:39] <Lunar_Lander> you can't have a material that gets solid when it gets hotter
[16:39] <SpeedEvil> you can
[16:39] <earthshine_> LL: I know - this whole conversation is ridiculous have you not cottoned on yet ?
[16:39] <SpeedEvil> look up fire-gilt
[16:40] <Lunar_Lander> sorry, we in Germany analyze stuff to death :P
[16:41] <Lunar_Lander> thanks SpeedEvil
[16:41] <Lunar_Lander> !beer
[16:41] <Lunar_Lander> oh why doesn't that work
[16:43] <earthshine_> WebDos
[16:43] <earthshine_> shit wrong channel
[16:44] <Lunar_Lander> xD
[16:44] <Lunar_Lander> no problem
[16:45] <earthshine_> 100 sycamore seeds dropped from altitude
[16:45] <earthshine_> Ther eis bound to be some kind of regulations for dropping seeds from height
[16:45] <earthshine_> I wonder how long it will be before someone thinks to use HAB to send cotraband materials over borders (if they aren't doing it already)
[16:46] <natrium42> Lunar_Lander, here is one for you
[16:46] <Randomskk> probably not worth it
[16:46] <natrium42> from what altitude to drop an egg
[16:46] <SpeedEvil> UAV would be easier
[16:46] <Randomskk> actually I wonder
[16:46] <earthshine_> make sure the predicted landing spot is in France and send over 500g of cocaine
[16:46] <natrium42> so that it's cooked when it reaches ground
[16:46] <Lunar_Lander> good question, I have to work that out
[16:46] <SpeedEvil> I did the numbers for electric people-smuggling minisub.
[16:46] <earthshine_> lol
[16:46] <Lunar_Lander> we had that once with a lead cube falling down
[16:46] <Randomskk> depends what countries you were trying to smuggle to and from as well
[16:46] <SpeedEvil> it's quite possible.
[16:47] <natrium42> Lunar_Lander, ok, i expect a full solution by midnight
[16:47] <Lunar_Lander> what?!
[16:47] <Lunar_Lander> we just had the basics of thermodynamicx
[16:47] <SpeedEvil> Randomskk, transatlantic. dolphin-shaped swimming
[16:47] <natrium42> <Lunar_Lander> we had that once with a lead cube falling down <-- haha, nice
[16:47] <Randomskk> lots of HABbing would leave a paper trail of payload contruction material, paprachutes, balloons, helium etc
[16:47] <Lunar_Lander> yea, but that was in Class 10
[16:47] <Randomskk> parachutes*
[16:47] <earthshine_> You dropped a lead cube from 30km ?
[16:48] <Lunar_Lander> no, it was a test question
[16:48] <SpeedEvil> tungsten dart.
[16:48] <Randomskk> SpeedEvil: is it better than alternatives?
[16:48] <SpeedEvil> could go supersonic.
[16:48] <Lunar_Lander> "how will the temperature of a lead cube change if it is dropped from 1 km above the ground"
[16:48] <Randomskk> supersonic through the water?
[16:48] <SpeedEvil> oh - no.
[16:48] <Randomskk> Lunar_Lander: including air resistance models?
[16:48] <Randomskk> presumably
[16:49] <SpeedEvil> Randomskk, quite slow - 20kt
[16:49] <Lunar_Lander> no
[16:49] <Randomskk> oh
[16:49] <Lunar_Lander> remember, that was Class 10
[16:49] <Randomskk> no air resistance?
[16:49] <Randomskk> so just a conservation of energy kinda thing with some specific heat capacity thrown in?
[16:49] <earthshine_> I am thinking of making a dart shaped mold and filling it with mercury, then dropping it from altitude once the temp is at -50 C
[16:49] <Lunar_Lander> most of the calculations we did in school were withoud friction
[16:49] <Lunar_Lander> *without
[16:49] <Randomskk> how do you factor in energy dispersed in the thing it impacts?
[16:49] <Randomskk> earthshine_: that's a great idea
[16:49] <SpeedEvil> assume rigid earth
[16:50] <Randomskk> I guess
[16:50] <Randomskk> lead is fairly soft
[16:50] <Lunar_Lander> yeah
[16:50] <Lunar_Lander> it will loose energy by compressing itself
[16:50] <Lunar_Lander> thus heating up
[16:50] <Randomskk> assuming it doesn't deform plastically
[16:50] Action: SpeedEvil did similar - more involved - sums for dropping ice onto the moon.
[16:51] <SpeedEvil> landing in a tent to contain the vapour
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[16:59] <earthshine_> ok catch you all later
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[17:16] <ProjectCirrus> any picaxers out there?
[17:17] <Lunar_Lander> no unfortunately not
[17:18] <ProjectCirrus> lol, im having some real bother over just getting the thing to compile and program
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[17:22] <ProjectCirrus> 'serrxd' command not suppoerted in this mode!
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[17:23] <Lunar_Lander> oh
[17:23] <Lunar_Lander> is that bad?
[17:23] <ProjectCirrus> well it just refuses to compile even though i think i'm using the right syntax
[17:24] <Lunar_Lander> hmm
[17:24] <Lunar_Lander> that's crappy
[17:24] <ProjectCirrus> I'm probably being retarded
[17:24] <ProjectCirrus> probably something really simple
[17:25] <Lunar_Lander> no you are surely not retarded
[17:25] <Lunar_Lander> this guy is: http://www.youtube.com/watch?v=mA6uIKPrlao&feature=related
[17:26] <ProjectCirrus> lol...but theres nothing for it on the picaxe forum and though ive registered i have to wait to be approved before i can post
[17:26] <Lunar_Lander> that is crappy too
[17:28] <ProjectCirrus> can get sertxd to compile but not serrxd
[17:28] <ProjectCirrus> weird
[17:30] <Lunar_Lander> but not as weird as that: http://www.youtube.com/watch?v=kuQji-SXuxo
[17:30] <ProjectCirrus> ok now thats just getting creepy
[17:30] <Lunar_Lander> xD
[17:31] <Lunar_Lander> that's better: http://www.youtube.com/watch?v=8DASaiS8n7M&NR=1
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[17:56] <ProjectCirrus> does anyone even have an account with the picaxe forum?
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[17:58] <natrium42> ProjectCirrus, i don't think picaxe is that popular here :S
[17:58] <Lunar_Lander> natrium42 http://www.youtube.com/watch?v=ZZQknqX5DpU
[17:59] <ProjectCirrus> you are right!
[17:59] <natrium42> rofl
[18:00] <natrium42> ProjectCirrus, i am sure it's a fine microcontroller and all...
[18:00] <ProjectCirrus> it should be bullet proof when i get the program onto it.... but there's a syntax problem i think with my serial in line
[18:01] <ProjectCirrus> I really do thinkn i'm doinf something wrong..... but have no idea what
[18:01] <ProjectCirrus> well good old trial and improvement might be my only option!
[18:05] <russss> AVR for ever
[18:07] <natrium42> russss, only coz your parents were AVR fans...
[18:07] <russss> I used to program pics actually
[18:07] <natrium42> russss was brought up in a AVR household
[18:07] <natrium42> oh?
[18:07] <Lunar_Lander> http://translate.google.de/translate?js=y&prev=_t&hl=de&ie=UTF-8&layout=1&eotf=1&u=http%3A%2F%2Fwww.bernd-leitenberger.de%2Fblog%2F2010%2F03%2F27%2Fmit-dem-ballon-um-die-welt-die-vergessenen-versuche-teil-2%2F&sl=de&tl=en
[18:08] <natrium42> konkret!
[18:10] <Lunar_Lander> :)
[18:13] <ProjectCirrus> ohh dung..... it might be that my picaxe doesn't actually support that serial in function... i'll need to use another pin
[18:13] <ProjectCirrus> serrxd was handy because it allowed me to use the download socket as an input
[18:13] <ProjectCirrus> now i'll have to do a bit of wiring
[18:13] <ProjectCirrus> ahhh well
[18:15] <DanielRichman> what are radioworld.co.uk's shipping prices usually?
[18:15] <ProjectCirrus> is it for a yagi?
[18:15] <DanielRichman> no, just some coax
[18:15] <ProjectCirrus> then ive no idea, a yagi cost £15 to NI
[18:15] <DanielRichman> ok
[18:16] <Randomskk> DanielRichman: they are in surrey
[18:17] <Randomskk> though admittedly shipping might still be easier
[18:17] <Randomskk> they're just down the road from me
[18:17] <Randomskk> but I guess you are a bit further out
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[18:17] <Randomskk> also it's not radioworld at all, sorry, it's that other radio shop
[18:17] <DanielRichman> ml&s?
[18:17] <Randomskk> yea
[18:17] <DanielRichman> they are about 40mins from me iirc
[18:17] <Randomskk> ah
[18:17] <Randomskk> not really worth it then
[18:17] jcoxon (~jcoxon@92.40.195.129.sub.mbb.three.co.uk) joined #highaltitude.
[18:18] <Lunar_Lander> hi jcoxon
[18:18] <jcoxon> hello
[18:18] <jcoxon> ping russss
[18:18] <DanielRichman> jcoxon, you look like the person that knows radioworld.co.uk's shipping costs (just some coax & connectors)
[18:18] <russss> hello
[18:18] <jcoxon> russss, you going to the space this evening?
[18:18] <russss> yep
[18:19] <jcoxon> DanielRichman, nope never used them
[18:19] <jcoxon> russss, do you remember what model the G5 was?
[18:19] <russss> nope.
[18:19] <russss> damp.
[18:19] <DanielRichman> jcoxon, where do you get your coax etc from?
[18:19] <jcoxon> DanielRichman, maplins - i've only ever bought rg58 and about 10m in total
[18:20] <jcoxon> russss, http://damntechnology.blogspot.com/2009/02/rebuilding-powermac-g5-power-supply.html
[18:20] <ProjectCirrus> maplins here too
[18:20] <DanielRichman> jcoxon, ah right; that was my second choice
[18:20] <ProjectCirrus> in fact bought some yesterday
[18:20] <DanielRichman> jcoxon, I can find maplin's shipping info. radioworld are somewhat vague
[18:20] <DanielRichman> Unfortunatly RG213 is a Maplin Web-Only Product :X
[18:20] <ProjectCirrus> right im away to a music prctice
[18:21] Nick change: ProjectCirrus -> PC-atPractice
[18:21] <Randomskk> when I went to maplins cambridge they only had a few meters of needlessly high quality coax
[18:21] <Randomskk> bought it anyway but still
[18:21] <DanielRichman> maplin's coax price is rather high though vs radioworld
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[18:22] <DanielRichman> jcoxon, threaded download, cache of payload info and UI update now works
[18:23] <DanielRichman> jcoxon, I also made --hab mean dl_online is true by default and fixed the checkbox
[18:23] <fsphil> wsplc have fairly reasonable carriage costs, got my yagi of them. probably get the vertical from them too
[18:23] <fsphil> sites a bit limited though
[18:24] <jcoxon> DanielRichman, okay cool
[18:24] <jcoxon> will check out your code
[18:25] <jcoxon> we should have a discussion about plans for dl-fldigi at some point soon
[18:26] <DanielRichman> plans? who needs plans! I've got the repo on a dartboard along with features, deciding which file one develops what into when at random
[18:26] <DanielRichman> jcoxon, cool, good idea
[18:27] <jcoxon> :-)
[18:27] <fsphil> I had a brief look at the new hab interface, nice work.
[18:27] <jcoxon> maybe over the weekend
[18:28] <DanielRichman> jcoxon, weekend I'm away :P
[18:28] <jcoxon> okay well next week ten
[18:28] <jcoxon> then*
[18:28] <DanielRichman> jcoxon, one thing I couldn't figure; line 659 of dl_fldigi.cxx has to be commented (it's an xml->read()) in order to pull the correct coding data
[18:28] <DanielRichman> maybe is a bug elsewhere in the code
[18:29] <jcoxon> hmmm not sure off the top of my head
[18:30] <DanielRichman> maybe I'll break out GDB on thurs
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[18:37] <jcoxon> bbl
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[19:23] <Lunar_Lander> "If you put up a picture in your home and you hammer a nail into your wall, fully convinced, and then think "The Picture does not match"...then you can pull the nail out again, but the hole will stay"
[19:24] <Randomskk> handily these days you can fill in holes
[19:25] <Lunar_Lander> yea
[19:25] <Lunar_Lander> some soccer trainer said that
[19:26] <sbasuita> what's that got to do with football?
[19:26] <Lunar_Lander> good question
[19:27] <Lunar_Lander> maybe he wanted to refer to somebody they had on the team and who is now out but has left his negative traces
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[19:29] <Lunar_Lander> http://www.youtube.com/watch?v=4oxPUsv-oRU&feature=related
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[19:35] <fsphil> hehe, sending the jpeg is slower than sstv
[19:35] <Randomskk> higher resolution? more noise resistance?
[19:35] <fsphil> same resolution, but better quality image
[19:36] <Randomskk> better quality in that you don't get the same amount of noise?
[19:36] <fsphil> half way through sending the first image now
[19:36] <Lunar_Lander> SSTV sounds funny
[19:36] <Lunar_Lander> I once tried it on my PC
[19:36] <fsphil> no noise (assuming all packets received) but for the normal jpeg compression artifacts
[19:36] <fsphil> SSTV is brilliant
[19:36] <Randomskk> should be nice
[19:36] <Randomskk> how long are we talking about per photo?
[19:37] <fsphil> about 4 minutes for 10k image
[19:37] <fsphil> about twice as slow
[19:37] <fsphil> but easier to compress images will transmit much faster
[19:38] <fsphil> view from a high altitude shouldn't have that much detail
[19:38] <fsphil> no sharp objects
[19:38] <fsphil> first image transmitted!
[19:38] <Randomskk> woo
[19:39] <fsphil> had to disable the preview image, kept crashing fldigi
[19:39] <fsphil> but it transfered without error
[19:40] <fsphil> There's still a chance that 300 baud is too fast for when the balloon is really high up
[19:40] <fsphil> that's SSTV's big advantage, it degrades gracefully
[19:41] tomwardill (~tomwardil@static.84.147.40.188.clients.your-server.de) joined #highaltitude.
[19:42] <tomwardill> hi there! earthshine recommended this room as people who might know methods of filtering/correcting bad gps data, given a gpx of a route
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[19:42] <SpeedEvil> What sort of bad
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[19:45] <tomwardill> SpeedEvil: I was walking at 78mph... (for about 2 trackpoints)
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[19:46] <SpeedEvil> what sort of traacklog. does it have estimated errors?
[19:47] <tomwardill> SpeedEvil: it's gpx, with lat, long, elevation and time
[19:47] <tomwardill> (it came out of an iphone)
[19:48] <SpeedEvil> ah. ideally you want it before that.
[19:48] <SpeedEvil> all you can do is to thrlw out the poins that don't match some model.
[19:48] <SpeedEvil> say accelleration over 1g
[19:50] <tomwardill> any ideas of a model for say, walking, or biking
[19:50] Action: tomwardill is a bit lost
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[19:52] <tomwardill> and i can't really find anything useful on t'internets
[19:53] <SpeedEvil> last
[19:53] <SpeedEvil> work out accelleration from last three points
[19:53] <SpeedEvil> or average more
[19:54] <SpeedEvil> if avreage of sliding window of 7 points is over 30m different thn the current point, throw it away
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[19:55] <tomwardill> aha, i see
[19:56] <SpeedEvil> http://wiki.openstreetmap.org/wiki/Accuracy
[19:56] <SpeedEvil> a page I wrote earlier
[19:56] <SpeedEvil> you can't always tell bogus data.
[19:57] <tomwardill> yeah, that's what was confusing me
[19:57] <tomwardill> basically, i'm trying to do dead simple 'record a gps track of me walking or biking, filter it so it's marginally sane, display it on a map'
[19:59] <SpeedEvil> it's a good idea to flag such errors not simply conceal
[20:00] <tomwardill> hmm, good point
[20:01] <tomwardill> I'll give that a shot then, ta :)
[20:11] <rjharrison> ping DanielRichman
[20:11] <rjharrison> I did the update to allpayloads
[20:13] <rjharrison> fsphil, I think 300 baud should work
[20:13] <Lunar_Lander> what is "irn" for a country?
[20:13] <rjharrison> Perhaps not as far as 50 but I do think it stands a good chance
[20:14] <fsphil> hi rjharrison
[20:14] <rjharrison> hi fsphil
[20:14] <rjharrison> ping edmoore
[20:14] <fsphil> I think the plan is to keep the balloon from drifting too far anyway, so the range shouldn't be too excessive
[20:14] <edmoore> rjharrison: hi
[20:15] <fsphil> Once I get this crash fixed I'll do some range tests about the town
[20:15] <fsphil> well, that and the blizzard going on outside :)
[20:15] <fsphil> crap, power cut
[20:16] <fsphil> back again, phew
[20:16] <Lunar_Lander> you have a blizzard?
[20:16] <DanielRichman> rjharrison, yeah I saw that, great :)
[20:16] <rjharrison> wow you're having some extreem wx
[20:16] <fsphil> it's awful out there!
[20:16] <fsphil> it was spring last week!
[20:16] <rjharrison> Hey DanielRichman cool stuff BTW
[20:16] <rjharrison> fsphil where are you
[20:17] <fsphil> n.ireland, just south of the north pole ;)
[20:17] <rjharrison> lol
[20:17] <rjharrison> You do get some rain over there
[20:17] <fsphil> it's not too bad normally, no more than the rest of the UK anyway.
[20:18] <fsphil> I didn't expect more snow though
[20:19] <SpeedEvil> 10mm/hour of sleet, 2c and 30mph wind.
[20:19] <SpeedEvil> brrrrrrrrrr
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[20:19] <fsphil> the wind is the big problem atm, power supply is a bit choppy
[20:19] <fsphil> we had lighting earlier too, and that caused power problems
[20:19] <SpeedEvil> here too.
[20:20] <fsphil> glad I got a few UPS boxes
[20:20] <SpeedEvil> I have 20h reserve tho
[20:20] <SpeedEvil> well - minimal load
[20:20] <fsphil> battery?
[20:20] <rjharrison> edmoore PM
[20:20] <SpeedEvil> yes
[20:21] <fsphil> that's gotta be handy
[20:21] <fsphil> I've a few solar panels but they're grid tied, useless during power cuts
[20:22] <SpeedEvil> well - my minimal config is 20w
[20:22] <SpeedEvil> which helps
[20:22] <fsphil> yea, our average is 400w :o
[20:22] <SpeedEvil> dsl+ laptop+light
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[20:23] <SpeedEvil> down to 200w here, half of which refrigeration.
[20:23] <fsphil> I did run around and switch everything off one day, just to see the meter going backwards :)
[20:23] <fsphil> this flickering is getting worse
[20:24] <fsphil> anyway, back to work!
[20:24] Action: fsphil puts on his hacking hat
[20:31] <PC-atPractice> i agree phil... our lights are flickering too
[20:31] <PC-atPractice> might have to get the generator out
[20:31] <PC-atPractice> we just have hurricane type rain.. no snow
[20:32] <PC-atPractice> the roads are flooding really badly
[20:32] <PC-atPractice> there the electric goes again!
[20:33] Nick change: PC-atPractice -> ProjectCirrus
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[20:35] <fsphil> snow was really heavy here, though it seems to be more rain now
[20:35] <ProjectCirrus> doesn't bode well for our launch
[20:36] <ProjectCirrus> hopefully the weather will get it out of it's system for then
[20:36] <fsphil> I like your optimism :)
[20:37] <DanielRichman> gah weather :X
[20:38] <fsphil> yep lol
[20:39] <Lunar_Lander> will LHC start up once more?
[20:39] <Lunar_Lander> it now says "Prepare Ramp 0.45 TeV"
[20:40] <fsphil> They got some nice collisions earlier
[20:40] <Lunar_Lander> yeah
[20:40] <Lunar_Lander> and no black holes ;)
[20:40] <fsphil> that we know about ;)
[20:40] <Lunar_Lander> xD
[20:40] <fsphil> it might just be slow *g*
[20:40] <Lunar_Lander> http://www.youtube.com/watch?v=ZZQknqX5DpU
[20:42] <fsphil> lol, so bad it's ... bad
[20:45] <Lunar_Lander> xD
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[20:59] <rjharrison> Lunar_Lander love it
[21:00] <Lunar_Lander> thanks :)
[21:00] <Lunar_Lander> I think it's great
[21:04] <fsphil> hawking bit is the best
[21:06] <Lunar_Lander> yeah
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[21:35] <sky2> hello
[21:36] <sky2> anyone here
[21:37] <edmoore> semi
[21:39] <Lunar_Lander> hi sky2
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[21:43] <sky2> hey Lunar_Lander
[21:43] <sky2> may i ask st
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[21:43] <edmoore> st?
[21:43] <sky2> something
[21:43] <edmoore> fire away
[21:44] <sky2> why cant i see satellites on orbit if ur cams stay there
[21:44] <edmoore> whose cams?
[21:44] <sky2> urs
[21:44] <edmoore> our cams don't stay anywhere
[21:44] <edmoore> and at the heighest they are about 200 miles and 17,000mph short of being in orbit
[21:45] <edmoore> they travel with the high altitude winds at 20m altitude and maybe 50mph at most
[21:46] <sky2> i think there must be something to see if i cam on this altitude
[21:46] <edmoore> not sattelites. at least not really any more so than seeing them from the ground
[21:47] <edmoore> you're only *slightly* nearer the satellites than an earth observer
[21:47] <sky2> ok then thanks
[21:47] <sky2> see you
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[21:47] <edmoore> my hot air gun has warmed up. bye
[21:49] <earthshine> evening
[21:50] <earthshine> there sure are some.... 'interesting'... persons asking questions in the channel lately
[21:51] <Lunar_Lander> yea
[21:51] <edmoore> good to have some new people but the SNR suffers a bit
[21:51] <Lunar_Lander> SNR?
[21:52] <Lunar_Lander> ah ok
[21:57] <ProjectCirrus> lol
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[22:04] <ProjectCirrus> though the mark space ratio is still acceptable
[22:05] <Lunar_Lander> yes
[22:06] <ProjectCirrus> i couldn't reply too quickly there or i'd be proved wrong
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[22:07] <edmoore_> cheeky girls followed by goldberg variations. interesting shuffle from itunes.
[22:07] <sbasuita> anybody going to reading fest?
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[22:12] <ProjectCirrus> btw... for all those eager picaxe users sitting with baited breath eager to find out about my predicament...... i fixed it.......... and as predicted i was just being retarded
[22:13] <ProjectCirrus> the chip i was using wasn't compatible with the easy mans serial connection and i just had to do it the more drawn out way
[22:14] <ProjectCirrus> im away here got to go and meet up with friends.... most of them think i've died
[22:14] <edmoore_> don't even go there
[22:14] Nick change: ProjectCirrus -> PC-Socialising
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[22:14] <edmoore_> i had a friend who only recently found out that i was living in college, 20m from him, for 4 moths over the summer
[22:15] <Randomskk> nice
[22:15] <PC-Socialising> mine was next door for three butterflies before i realised
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[22:15] <PC-Socialising> moths/butterflies no?
[22:15] <PC-Socialising> ahh well
[22:16] <fsphil> ba-dum tish
[22:16] <PC-Socialising> go on norn iron
[22:16] <PC-Socialising> ok out into the storm i go
[22:17] <fsphil> good luck
[22:17] <earthshine> ed do you really want to be admitting in public that you have the Cheeky Girls in your iTunes ?
[22:18] <edmoore_> i had exactly that thought about 1/10th sec after hitting enter
[22:18] <edmoore_> but itunes is seriously puling the stops out now
[22:18] <edmoore_> rach 2
[22:18] <edmoore_> right, massive soldering binge for the duration of rach 2
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[22:31] <earthshine> GPS Tracker arrived today
[22:35] <earthshine> Works well too - obtained GPS lock indoors within a minute first go and now within a few seconds of turning it on
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[22:44] <rjharrison> If anyone sees Juxta please ask him to send me an email rharrison<-|-at-|->hgf.com as Australia TV want to do a follow up with him
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[22:47] Nick change: sbasuita_ -> sbasuita
[22:48] <earthshine> Follow up to what ?
[22:48] <sbasuita> rjharrison, perhaps send him a message here? http://projecthorus.org/?page_id=162
[22:54] <earthshine> Hmm... I purchased an analog pressure sensor that appears to be, according to teh datasheet, digital (I2C)
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[22:57] <Randomskk> 21:44:25 <rjharrison> If anyone sees Juxta please ask him to send me an email rharrison<-|-at-|->hgf.com as Australia TV want to do a follow up with him
[22:57] <edmoore_> Randomskk has taken over as the new zeusbot
[22:57] <Randomskk> I can google really really fast
[22:57] <earthshine> What is this a follow up to ?
[22:58] <rjharrison> Hehe I just sent you a mesage terry
[22:58] <Randomskk> rjharrison's extensive media coverage presumably
[22:58] <rjharrison> lo
[22:58] <rjharrison> l
[22:58] <Randomskk> rjharrison: saw you on cnn the other night
[22:58] <rjharrison> Yep sorry about that
[22:58] <Randomskk> haha no idea what you mean, you should see the rest of what was on cnn
[22:58] <Randomskk> you were a marked improvement
[23:01] <rjharrison> Thanks at least I was on topic :)
[23:02] <rjharrison> This is what I have been bothered to log so far. Do not feel like you should watch it but some of it is fun. http://www.robertharrison.org/icarus/wordpress/recent-media-links/
[23:02] <Randomskk> impressive lineup :D
[23:03] <Randomskk> wow, chinese newspapers
[23:03] <Randomskk> it has your name in chinese :D
[23:03] <Randomskk> haha nice
[23:03] <Randomskk> chrome's translation is doing its utmost
[23:04] <Randomskk> such spectacular beauty of the Earth in space images are usually fired by the NASA space probe shot. Nevertheless, Britain has proved an astronomy enthusiast shooting scenes of this spectacular space, the Earth does not necessarily require several million pounds launch of space probe, now he succeeded in DIY home-made high-altitude helium balloon bandage camera shoot to Earth.
[23:04] <Randomskk> Many people have seen these photos will think it must have cost millions of pounds was photographed, and when Harris told them the truth and everyone is very surprised after.
[23:05] <rjharrison> lol
[23:05] <fsphil> that's not a bad translation
[23:05] <rjharrison> That's better than I can do
[23:05] <Randomskk> considering it's from chinese that is suitably impressive
[23:05] <fsphil> bandage camera though?
[23:06] <Randomskk> and no random untranslated symbols
[23:06] <rjharrison> lets hope it makes more sense in chinese
[23:06] <Randomskk> normally latin based languages end up with random words you don't know that don't get translated
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[00:00] --- Wed Mar 31 2010