highaltitude.log.20121105

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[00:16] <arko> evening
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[03:49] <mrShrimp> Hi! Is anyone here?
[03:50] <SpeedEvil> yes
[03:51] <mrShrimp> Would you happen to know a thing or two about stripboard? :p
[03:51] <mrShrimp> *stripboards
[03:52] <SpeedEvil> yes
[03:52] <SpeedEvil> but ##electronics too
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[03:52] <mrShrimp> I was wondering
[03:53] <mrShrimp> how I would mount an SMA jack onto a Veroboard
[03:53] <SpeedEvil> with difficulty
[03:53] <mrShrimp> something along the lines of this?
[03:53] <mrShrimp> http://www.americanradiosupply.com/pcb-straight-female-jack-sma-2770/
[03:53] <mrShrimp> 0.0
[03:53] <mrShrimp> oh
[03:53] <mrShrimp> Is it possible to do?
[03:53] <SpeedEvil> what is the on spacing
[03:54] <SpeedEvil> is it a quadrant of 0.1"//?
[03:54] <mrShrimp> The board?
[03:54] <SpeedEvil> connector
[03:55] <mrShrimp> I don't know
[03:56] <mrShrimp> sorry, I haven't ordered it yet because I was not sure if it would match the Veroboard well
[03:56] <mrShrimp> It says it is a SMA-2770
[03:57] <SpeedEvil> that's the connector style
[03:57] <SpeedEvil> however, goi g to sleep, ask in electronics
[03:57] <mrShrimp> ok
[03:57] <mrShrimp> where would I find electronics?
[03:58] <mrShrimp> you mean a forum of some kind?
[03:58] <BrainDamage> type /join ##electronics
[03:58] <SpeedEvil> ##electronics - channel on this network
[03:58] <mrShrimp> oh, ok
[03:58] <mrShrimp> Thanks!
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[04:16] <arko> wow, thats a neat channel
[04:16] <arko> kinda busy
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[05:42] <MiniMail> hehe 1 more baloon lost in water? :)
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[05:45] <arko> :( aww
[05:48] <MiniMail> :ยด/
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[06:50] <Upu> mrShrimp use an end launch one on veroboard
[06:50] <Upu> they fit fine
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[07:27] <nosebleedkt> hi !!
[07:28] <natrium42> omg, yes, *HI* *NOSEBLEEDKT*
[07:28] <natrium42> awwwwwwwwww yeaaaaah
[07:28] <natrium42> :D
[07:29] <nosebleedkt> hahaha
[07:29] <nosebleedkt> natrium42, where have you been? crossing US from east coast to west coast?
[07:29] <nosebleedkt> :P
[07:30] <natrium42> i think that was dave
[07:30] <arko> lucky people
[07:30] <arko> natrium42 ay?
[07:30] <natrium42> hi
[07:30] <arko> your site inspired me to do habs
[07:30] <natrium42> oh, cool :)
[07:30] <nosebleedkt> lol
[07:30] <arko> :)
[07:30] <natrium42> where are you based?
[07:30] <nosebleedkt> natrium42, did my images get you upset?
[07:30] <arko> los angeles
[07:31] <natrium42> nice, not horribly far, i am int he bay area
[07:31] <arko> oh awesome
[07:31] <arko> yeah your like up the street
[07:31] <arko> err 5 freeway
[07:32] <natrium42> :D
[07:32] <arko> Upu: you have a few minutes some time in the future to help debug? I can smell the finish line, I know it's close
[07:32] <arko> DanielRichman: ^
[07:33] <natrium42> < nosebleedkt> natrium42, did my images get you upset?
[07:33] <natrium42> why?
[07:33] <nosebleedkt> because they are awesome :D hahahaha
[07:33] <natrium42> i liked them
[07:33] <nosebleedkt> mhhh
[07:34] <nosebleedkt> 'liked them'
[07:34] <natrium42> i printed them out and hung them on my walls and ceilings
[07:34] <nosebleedkt> yeah yeah, thats what i wanted to hear
[07:34] <nosebleedkt> hhahahahahaha
[07:34] <natrium42> :P
[07:35] <nosebleedkt> just being in a good mood today. propably because its still monday :D
[07:36] <natrium42> i have 24 minutes of sunday left
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[07:39] <nosebleedkt> :)
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[08:08] <costyn> morning
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[08:14] <daveake> morning
[08:14] <costyn> daveake: hows the weather looking for your launch?
[08:14] <daveake> the one yesterday? :)
[08:14] <costyn> erp
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[08:14] <natrium42> lol
[08:14] <costyn> yes... hehe... I just read that email today
[08:15] <daveake> hah
[08:15] <costyn> silly me
[08:15] <costyn> how'd it go?
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[08:16] <daveake> brb phone
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[08:21] <UpuWork> hey arko
[08:25] <arko> wass up
[08:25] <arko> how you doin?
[08:28] <UpuWork> not bad
[08:29] <UpuWork> still not got the hourly working ?
[08:29] <arko> i feel like it's just one last error
[08:29] <arko> http://pastebin.com/475uFhLU
[08:29] <arko> does this look familiar
[08:29] <arko> ?
[08:30] <arko> it runs for like 30 minutes and looks like its done
[08:30] <arko> i go to look at the data and all the dots are in the same place
[08:30] <arko> so when i look at the log in pydap everything looks fine
[08:30] <UpuWork> have you run it again since ? The Noaa servers can be flakey sometimes
[08:31] <arko> yeah
[08:31] <arko> serveral times
[08:31] <arko> always the same error
[08:31] <arko> in cusf-landing-data
[08:31] <arko> derp
[08:31] <arko> landing-prediction-data/log
[08:31] <arko> thats where this error is
[08:31] <arko> i can set it again
[08:31] <UpuWork> probably not something I can assist with
[08:31] <arko> its cool
[08:32] <UpuWork> does look like a connectivity issue though
[08:32] <arko> yeah
[08:32] <arko> but i logged the data and it's pulling down like almost 500mbs
[08:32] <arko> maybe it's timing out the connection or something or expiring?
[08:33] <arko> i dont know :/
[08:34] <UpuWork> ISP issue ?
[08:35] <arko> i doubt it
[08:35] <arko> its on a business internet line
[08:36] <arko> plenty of speed and uptime
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[08:38] <UpuWork> not sure then, possibly download manually ?
[08:38] <UpuWork> see if it times out
[08:39] <arko> hmmm
[08:39] <arko> ok
[08:39] <arko> cant hurt
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[10:10] <costyn> http://www.websdr.org/ interesting, something like globaltuners I guess... unfortunately none of the frequency ranges are within what we use
[10:11] <fsphil> I love that site
[10:11] <fsphil> have you seen the wideband one?
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[10:14] <costyn> nope, someone linked to it on another irc channel. not had much time to look around
[10:16] <fsphil> I'm sure it would be possible to do something similar with the rtl-sdrs
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[11:22] <mfa298> fsphil: I assume you're talking about http://websdr.ewi.utwente.nl:8901/
[11:24] <fsphil> that's the one
[11:24] <mfa298> it's a pretty impressive bit of hardware they've got
[11:26] <mfa298> and some excellent experimenting - I came accross it a few years back when it was a couple of small bits of hf bands using a soundcard and basic reciever.
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[11:35] <Darkside> i wish he'd release the source for it
[11:35] <Darkside> i'd love to make it work with some direct sampling hardware i have
[11:35] <UpuWork> wait so that can "see" 29Mhz in one go ?
[11:36] <Darkside> yes
[11:36] <UpuWork> wow
[11:36] <Darkside> it samples at about 60something MHz
[11:44] <fsphil> I dunno about the hardware, but the software bit could probably be emulated with gnuradio
[11:46] <Darkside> the web interface stuff would be a bit difficult do to
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[11:52] <mfa298> I did try asking about it when it was much smaller but he didn't want to open it up to the public.
[11:52] <mfa298> I think there's some good descriptions if you read all the way through the description text.
[11:53] <mattbrejza> the hardware is probably very straight forward, its just what runs on the server id expect
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[12:05] <mfa298> oh wow, I just heard what I think is Olivia on 20m using that. That's an interesting mode to hear
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[12:42] <craag> mfa298: He does let other people use the server software, you just have to email him about it, so not as open as it could be. http://www.websdr.org/background.html
[12:42] <Darkside> and he sends you binaries
[12:42] <Darkside> though theres heaps of settings you can change
[12:43] <Darkside> i've been meaning to try and make a fake audio device, with a absurdly high sample rate, and see if it'll work with it
[12:43] <craag> Darkside: I guessed as much.
[12:51] <craag> The most amazing bit for me is the antenna, it's a *tiny* active element.
[12:51] <craag> He doesn't say precisely how long, but the largest design I found was a 14cm x 3.5cm flat copper element.
[12:52] <Darkside> yep, i've made one of those
[12:52] <Darkside> haven't had a chance to test it properly yet, as i have too much noise around here
[12:52] <Darkside> i've actually made up a SMD design of it
[12:53] <craag> Ah nice.
[12:53] <fsphil> they must have a nice noise-free site there
[12:54] <Darkside> yeah
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[13:41] <mfa298> it was in the early days I asked about it and he didn't want to share then. Sounds like it's slowly becoming more open.
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[13:46] <mfa298> looking at the history that was probably around 04/05 - The way it's grown since those early days (48Khz of spectrum) is amazing.
[13:47] <mfa298> craag: on the front page "The active receiving element is about 5 by 10 cm large"
[13:49] <fsphil> I wonder if the waterfall is done in the java applet or sent as an image
[13:50] <fsphil> I suppose somewhere in between
[13:52] <mfa298> based on tuning around earlier I think it only recieves the data it will display (scrolling to the sides gave black areas for the historical part)
[13:52] <mfa298> but don't know what format it will be in.
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[13:56] <Darkside> image
[13:56] <Darkside> well, lines of data anyway
[13:57] <Darkside> but it doesn't send you the full IQ samples for the section of spectrum you're viewing
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[13:57] <Darkside> just sends the demodulated data, as a 8KHz sample rate i think
[13:57] <Darkside> ok sleep
[13:57] <Darkside> nn
[13:58] <mfa298> I was guessing it was probably a lines worth of image data. Sending more would likely to be bandwidth hungry.
[13:58] <fsphil> there's no reason it couldn't be done with java
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[14:58] <DrLuke> so I bought myself a solar cell and I intend to launch it on my first payload
[14:58] <DrLuke> I thought about some simple voltage measurement across a know resistor
[14:58] <DrLuke> while I'll have 2 resistors between which I can switch: one internal, one external
[14:59] <DrLuke> that way I can either heat the capsule a bit, or not heat it if it's too much heat
[14:59] <DrLuke> http://www.youtube.com/watch?v=U85ujwW26ak
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[14:59] <DrLuke> (if I may say so myself)
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[15:32] <mrShrimp> @DrLuke That sounds like an interesting idea! Is heating the capsule really a necessity though? I have been getting the vibe that as long as your components are rated for fairly low temperatures, there is nothing to worry about.
[15:33] <DrLuke> mrShrimp: it's just optional
[15:33] <DrLuke> just in case
[15:34] <DrLuke> there might be a crack through which cold air can enter or something
[15:34] <fsphil> would you even get useful heat from that?
[15:36] <mrShrimp> One would get more useful heat than a handwarmer, for probably the same amount of mass, depending on how large the cell is.
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[15:37] <mrShrimp> I don't actually know how massive solar cells are, but I am guessing not that much.
[15:47] <NavracWork> not very heavy at all
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[15:50] <costyn> DrLuke: then you might as well add a valve which lets in cold air if the payload gets too warm :)
[15:51] <DrLuke> mrshrimp: heating isn't the goal
[15:51] <costyn> (assuming you've made a really well made box )
[15:51] <DrLuke> costyn: that's pretty ridiculous, lol
[15:51] <costyn> DrLuke: very much so :)
[15:51] <DrLuke> although a small servo and a styrofoam plug...
[15:52] <DrLuke> :P
[15:52] <costyn> hehe
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[16:08] <SamSilver> DrLuke: with no way for air to enter or exit your box it could well explode / implode
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[16:17] <griffonbot> Received email: Ali al-Azzawi "[UKHAS] Gadget show tonight"
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[16:23] <Upu> aka wwhat Rocketboy did this summer
[16:28] <m0psi> jcoxon, you there?
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[16:28] <m0psi> hi upu
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[16:32] <fsphil> bet the gadget show do better than richard hammond
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[16:33] <m0psi> fsphil, i thought it was May who did one? maybe hammond too
[16:34] <fsphil> May did one with steve and rob
[16:35] <fsphil> hammond has done one too, but with JP aerospace in the US
[16:35] <eroomde> i'm waiting for the top gear one
[16:35] <eroomde> some kind of silly race
[16:35] <fsphil> clarkson is yet to try
[16:35] <m0psi> y, nice idea eroomde
[16:35] <fsphil> fortunatly petrol is heavier than air
[16:35] <eroomde> can an audi rs4 get from bracknell to slough in rish-hour faster than a model of an audi rs-4 can get... into space
[16:35] <eroomde> rush*
[16:36] <m0psi> maybe an audi rs4 on a balloon!
[16:36] <eroomde> that a balloon
[16:37] <m0psi> actually, didn't they drop a car once from a great height?
[16:37] <eroomde> suspect so
[16:38] <gonzo_> a robin
[16:38] <eroomde> they've dropped the from quarries, rocket boosters, probably out the back of a cargo plane too
[16:38] <m0psi> ah, i know the man who designed the rocket for the robin-shuttle stunt
[16:38] <gonzo_> though the porshe onto a caravan was more satisfying
[16:38] <m0psi> he did the mini on a ski jump too
[16:39] <m0psi> damian hall, a manchester man
[16:39] <m0psi> used to work for RAF
[16:40] <eroomde> master of creating stressful situations for those working with him
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[16:40] <m0psi> ah, you know him too :-)
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[16:40] <eroomde> yup!
[16:40] <eroomde> my colleague did the avionics for the robin reliant project
[16:42] <m0psi> i worked with him for a bit, not long enough to be stressed though
[16:42] <fsphil> the shuttle launch they did didn't seem to get that high
[16:42] <eroomde> i got some hybrid rocket stuff from him
[16:42] <eroomde> back when he was doing that
[16:42] <eroomde> he's doing something else now i think
[16:42] <eroomde> no more rocketry anymore
[16:42] <m0psi> no, it was a tv stunt, rather than seriously trying to fly
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[16:43] <m0psi> management consultancy
[16:43] <eroomde> now there's a prospect
[16:43] <eroomde> the robin not detaching was an accident however
[16:43] <eroomde> they did want it to release
[16:44] <m0psi> sure, they had intended it to fly, but not the 'big deal' for the show
[16:44] <m0psi> more the specticle
[16:44] <eroomde> but the wiring caught fire or something
[16:45] <m0psi> y, not sure, but the pyro bolts did not go off
[16:45] <eroomde> i think it was that the motors took differeing amounts of time to get up to thruist, so for a while it was lying on the pad with just some of the motors going, not enough to lift off, instead just making a big ball of fire at the base of the reliant where a lot of the avionics was
[16:45] <eroomde> you can see in the footage there is definitely burning stuff in the boot of the reliant
[16:45] <m0psi> oh, so cooked it?
[16:46] <eroomde> that's the thinking
[16:47] <m0psi> shame really, it would have been nice to see the robin glide
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[16:47] <eroomde> yeah
[16:47] <eroomde> if that's the word :)
[16:48] <m0psi> hey, bricks fly too!
[16:51] <eroomde> hab parachutes fly, topically
[16:51] <eroomde> the worse they are the more they seem to fly
[16:51] <eroomde> screws up real time landing predictions no end
[16:52] <griffonbot> Received email: David Akerman "[UKHAS] Launch Announcement - Friday 9th November from Brightwalton"
[16:55] <x-f> talking about flying, do you know about the latest SpaceX's Grasshopper's "jump"?
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[16:55] <fsphil> I'll be in a bus during that flight, wonder if I can track it :)
[16:56] <eroomde> x-f: yeah i saw a vid
[16:56] <eroomde> a few seconds of hover
[16:56] <eroomde> which is nice
[16:56] <eroomde> the whole idea is still bonkers however, i think
[16:56] <SpeedEvil> since last week?
[16:57] <SpeedEvil> bonkers doesn't mean impossible
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[16:57] <Dan-K2VOL> indeed, so is undercutting the entire rocket industry by that much :-)
[16:57] <SpeedEvil> but an engine out would make it xonaideabky more fun
[16:57] <SpeedEvil> considerably
[16:57] <SpeedEvil> I wonder if there is top thrust
[16:57] <eroomde> bonkers doesn't mean impossible no
[16:58] <Dan-K2VOL> anyone use the Funcube with dl-fldigi on today?
[16:58] <SpeedEvil> or if it relies solely on gimballing the mains
[16:58] <eroomde> but just a very difficult way to go about reusability
[16:59] <SpeedEvil> I dunno. most of the subsystems are already on the rocket
[16:59] <SpeedEvil> other than the legs. compute and sensors are now free.
[17:00] <daveake> Dan-K2VOL Yes, I do, and several others here do
[17:00] <fsphil> Dan-K2VOL: yea
[17:00] <eroomde> SpeedEvil: i mean in terms of fuel use to decelerate
[17:00] <Dan-K2VOL> cool, any on OSX?
[17:00] <fsphil> linux here
[17:00] <eroomde> and the downrange requirements
[17:00] <daveake> Windoze sorry
[17:01] <Dan-K2VOL> thx
[17:01] <SpeedEvil> eroomde: I wonder just how much is required for fuel. it is a light body after all
[17:03] <eroomde> it depends on your payload fraction
[17:03] <eroomde> that's where they'll take a nasty hit
[17:03] <eroomde> wings are a vastly more energy efficient way of tacking this problem, is all
[17:04] <SpeedEvil> for all of the triplicate variants, with cross feed, it's considerably easier
[17:05] <SpeedEvil> as even 'just' recovering the boosters makes it enormously cheaper.
[17:06] <eroomde> but you have horrible downrange issues
[17:06] <eroomde> this is my concern
[17:07] <eroomde> you need a big empy range hundreds of miles downrange in both polar and equitorial launch positions
[17:07] <eroomde> it would me muchly easier for them if they could get everything into an orbit
[17:07] <eroomde> or, almost-orbit
[17:07] <eroomde> and come back down again in more of less that same place
[17:09] <eroomde> i think upper stage return is probably a bit easier for this reason
[17:09] <eroomde> although they want to go lox/lh2 for the upper stage (makes sense from isp) but making that reliably relightable will be a big challenge
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[17:14] <Dan-K2VOL> is the DL-FLDIGI now just always in hab mode?
[17:15] <fsphil> it's by default these days iirc
[17:18] <Dan-K2VOL> cool
[17:18] <Dan-K2VOL> been a while since I ran it
[17:18] <fsphil> maybe not, just looking at the source
[17:18] <Dan-K2VOL> trying to decode the pava 6 board i got from upu
[17:20] <fsphil> getting anything?
[17:21] <Dan-K2VOL> I'm getting audio into dl-fldigi, but I'll be darned if it will decode properly, I set it to the pava6 testing payload, but I wonder if he programmed using a different set of settings, getting nothing intelligible with normal or reverse
[17:21] <Upu> yo dan
[17:21] <Dan-K2VOL> hola upu!
[17:21] <Upu> Running under Windows ?
[17:21] <Dan-K2VOL> I was going to work at this until I ran out of ideas before summoning you :-)
[17:21] <Dan-K2VOL> osx
[17:22] <Upu> want me to take a look remotely ?
[17:22] <Dan-K2VOL> sure, just a sec
[17:22] <Upu> http://www.nevis.co.uk/nev-remote.html
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[17:25] <cuddykid> guessing it's a RocketBoy creation on the gadget show tonight?
[17:25] <Upu> there you go :)
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[17:25] <Dan-K2VOL> nice, thanks !
[17:25] <Upu> 7N2
[17:25] <Dan-K2VOL> clean as a whistle now
[17:26] <Upu> just needs a GPS lock
[17:26] <Dan-K2VOL> ahh
[17:26] <Dan-K2VOL> yeah I'm indoors at the bench atm, I'll rig up a battery
[17:26] <Dan-K2VOL> going to try to test it in the cryo chamber to measure drift
[17:26] <Dan-K2VOL> strong signal into the funcube
[17:27] <Upu> should be if its next to it :)
[17:27] <Dan-K2VOL> heh I'm about 4m away to get rid of some of the clipping
[17:27] <Dan-K2VOL> I put a groundplane vertical on it
[17:27] <Dan-K2VOL> on the pava
[17:28] <Dan-K2VOL> what is the VBATT range spec on the 3.3v board
[17:28] <Upu> 0.8 to 5.5
[17:28] <Dan-K2VOL> oh that's nice
[17:28] <Dan-K2VOL> good choice on your regulator!
[17:29] <Dan-K2VOL> I'm not sure it will get lock while in the chamber, do you think that will affect operation?
[17:29] <mattbrejza> its not a particularly good step down regulator mind you
[17:29] <Dan-K2VOL> well, have wide options on the input helps a lot for trying stuff out, even if not terribly efficient
[17:30] <mattbrejza> yea its fine for testing
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[17:30] <mattbrejza> alothugh in step down mode it adds some extra crap in the radio spectrum
[17:30] <Dan-K2VOL> interesting
[17:30] <mattbrejza> on my board
[17:31] <mattbrejza> its not a rfm btw
[17:31] <Upu> its a noisy board anyway
[17:31] <Dan-K2VOL> I do see a few birdies even nearby
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[18:06] <fsphil> shows with "The All New" in the title are often not good
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[18:18] <Dan-K2VOL> hey upu, u around?
[18:19] <Upu> if I have to do anything and its complex no
[18:19] <Upu> if not sure I'm here
[18:19] <Upu> thats english for sure Dan how can I help ?
[18:20] <Dan-K2VOL> heh thanks, which Arduino board was this similar to in the boards.txt?
[18:20] <Dan-K2VOL> fio?
[18:20] <Upu> Pro mini but 1 sec
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[18:21] <Upu> http://pastebin.com/i2hqkB7B
[18:21] <Upu> pop that in boards.txt
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[18:22] <Dan-K2VOL> nice
[18:22] <Dan-K2VOL> thx
[18:22] <Upu> nps
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[18:46] <Lunar_Lander> hello
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[20:39] Action: mfa298 isn't sure if the gadget show have enough prizes :p
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[20:50] <fsphil> that microsoft surface advert is really quite creepy
[20:51] <Laurenceb> link?
[20:51] <fsphil> was just on telly
[20:51] <Laurenceb> oh
[20:51] <fsphil> channel 5
[20:51] <Laurenceb> the 50% adverts channel
[20:52] <RG-lz1dev> what are you looking to buy?
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[20:59] <m0psi> 50% is sooo understatement!
[20:59] <m0psi> i've not watched that channel before, rubbish!
[21:00] <mfa298> there did seem to be a lot of ads in that one.
[21:00] <m0psi> i can't belive they made wade through that lot to see about 5min of hab
[21:03] <Lunar_Lander> just 5 minutes?
[21:03] <m0psi> ok, maybe 7.5
[21:03] <m0psi> very little to do with the hab itself, which is a shame
[21:04] <mfa298> although now you know which video camera to send up
[21:04] <m0psi> just focused on the cameras
[21:04] <fsphil> that was the idea to be fair :)
[21:04] <m0psi> which i thought was a little missing a fundamental truth
[21:04] <m0psi> they said the one that had the highest 'crispy' image, was the hero
[21:05] <m0psi> "oh and btw, it had the widest angle"
[21:05] <m0psi> no s**t!
[21:06] <m0psi> so, they gave the hero the thumbs up, essentially because it had a wide angle lense!
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[21:06] <daveake> it also has by far the most lens distortion
[21:06] <m0psi> exactly, by definition
[21:06] <Laurenceb> fsphil: any good with linux?
[21:06] <daveake> Which I suppose makes the earth look round
[21:06] <Laurenceb> i have an ... issue
[21:07] <m0psi> the "earth looks round" bit is obviously a selling point for a hab camera. It prooves that you got to space :-P
[21:08] <mfa298> in a couple of the shots it almost looked like the curvature had reversed - but they were quick shots to hard to tell for sure
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[21:08] <fsphil> depends Laurenceb :)
[21:08] <daveake> yes that happens
[21:08] <daveake> I hate the effect
[21:08] <m0psi> that is just a function of the fisheye
[21:08] <daveake> Which is half the reason I don't use one
[21:09] <Laurenceb> fsphil: so i have a remote machine thats acting odd
[21:09] <daveake> The other half is that I'm too tight to buy one :)
[21:09] <Laurenceb> filesystem is set to read only all of a sudden
[21:09] <fsphil> not good
[21:09] <daveake> Can be fixed in s/w after tho
[21:09] <Laurenceb> [31012775.436709] ata1.00: status: { DRDY ERR }
[21:09] <Laurenceb> <Laurenceb> [31012775.436711] ata1.00: error: { UNC }
[21:09] <Laurenceb> <Laurenceb> [31012775.564894] ata1.00: configured for UDMA/133
[21:09] <Laurenceb> <Laurenceb> [31012775.564903] ata1: EH complete
[21:09] <Laurenceb> <Laurenceb> [31184342.689885] ext3_abort called.
[21:09] <SpeedEvil> Laurenceb: first look at syslog
[21:09] <SpeedEvil> is this a pata state,?
[21:09] <SpeedEvil> system
[21:10] <Laurenceb> SATA aiui
[21:10] <SpeedEvil> smartctl -a /dev/SDA
[21:10] <Laurenceb> not installed
[21:11] <mfa298> Laurenceb: looks like something is making the bus reset. Last time I saw that turned out to be a dodgy PSU but could be dodgy controller or drive
[21:11] <Laurenceb> and i dont have write access to install it
[21:11] <SpeedEvil> you're looking for SMART state pads or fajk
[21:11] <SpeedEvil> fall
[21:11] <SpeedEvil> mount a ram disk, or NFS
[21:11] <Laurenceb> E: Unable to write to /var/cache/apt/
[21:12] <Laurenceb> cant i remount the drive as r/w ?
[21:12] <SpeedEvil> actually, fists
[21:12] <mfa298> You might be able to remount as r/w with: mount -o remount,rw <path>
[21:12] <SpeedEvil> first
[21:12] <Laurenceb> mja298: tried that
[21:12] <SpeedEvil> do you care about rhw data
[21:12] <SpeedEvil> the
[21:12] <mfa298> but might not be the safest if sometihng os broken
[21:12] <Laurenceb> mount: you must specify the filesystem type
[21:12] <Laurenceb> yes - i need to recover the data
[21:12] <Laurenceb> i can read it atm
[21:13] <Laurenceb> should i backup over network?
[21:13] <SpeedEvil> yes!
[21:13] <Laurenceb> hmm
[21:13] <Laurenceb> theres a lot on there
[21:13] <mfa298> Probably a good idea, Start with the important stuff.
[21:13] <Laurenceb> ok
[21:14] <SpeedEvil> also, you can load smartctl to a ramdiak, or mont NFS
[21:14] <Lunar_Lander> hi daveake :)
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[21:15] <daveake> hi LL
[21:16] <mfa298> I wonder how easy it might be to compile up smartctl as a static binary then you should be able to copy it over (if you have somewhere you can write to)
[21:16] <Laurenceb> mfa298: i dont
[21:16] <Laurenceb> ill backup the important stuff
[21:16] <Laurenceb> its kind of organised so its only a few GB
[21:17] <Lunar_Lander> daveake, cool flight yesterday
[21:17] <daveake> It was fun
[21:17] <mfa298> Laurenceb: /var/run or /dev/shm might be writeable as they're sometimes in ram.
[21:17] <daveake> Well aside from the SSDV aerial issue
[21:18] <Lunar_Lander> yea
[21:18] <Lunar_Lander> what happened?
[21:18] <Laurenceb> i see
[21:18] <Laurenceb> ill backup first
[21:18] <mfa298> Laurenceb: good move, always best to be safe than sorry!
[21:20] <Laurenceb> rsync is recursive by itself right?
[21:20] <Laurenceb> just rsync -avz source destination ?
[21:20] <mfa298> sounds about right
[21:20] <Laurenceb> cool
[21:20] <mfa298> I'll just check my backup scripts
[21:20] <Laurenceb> here goes my bandwidth limit
[21:21] <Laurenceb> copying to a new 1TB drive...
[21:21] <Laurenceb> how far will i get
[21:21] <daveake> LL Not checked yet
[21:22] <mfa298> that seems to be similar to the options I have
[21:22] <Laurenceb> thanks
[21:22] <Laurenceb> this may take some time...
[21:23] <mfa298> this might also be useful --numeric-ids (I think it means it doesn't try and match usernames but just does uid's)
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[21:24] <mfa298> although that might be more useful if your keeping regular backups.
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[21:26] <Laurenceb> ill replace it with a RAID
[21:27] <Upu> 3
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[21:28] <mfa298> backups are good too for when something else breaks, there's a few rsync based systems which should mean you just have to do incremental backups.
[21:29] <mfa298> although I fail at backing up half my stuff.
[21:29] <Lunar_Lander> daveake, ah ok
[21:29] <Lunar_Lander> hi Upu
[21:33] <fsphil> I suspect there's about to be more hab'ing on bbc one
[21:34] <Lunar_Lander> cool
[21:37] <mfa298> fsphil: i suspect the same
[21:38] <Laurenceb> haha jp aerospace
[21:38] <fsphil> wait'll you see the bumpy launch
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[21:39] <daveake> nice small payload there
[21:39] <fsphil> *cringe*
[21:40] <Laurenceb> "space"
[21:40] <mfa298> those did seem to be some bad statements
[21:40] <mfa298> "beyond the edge of the atmosphere"
[21:40] <Hiena> The final frontier...
[21:41] <Laurenceb> hehe that desert looks familiar
[21:41] <Laurenceb> thats where armadillo launch
[21:41] <fsphil> noooo it's a gopro
[21:41] <daveake> That is NOT curvature of the Earth ffs
[21:41] <fsphil> that's not curvature
[21:41] <Laurenceb> lawl
[21:42] <daveake> woops
[21:42] <mfa298> 1000 ft/min so 5m/s.
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[21:44] <daveake> spiiiiiiiiiiin
[21:44] <fsphil> thors hammer
[21:44] <fsphil> hehe, guess they didn't use the predictor
[21:44] <mfa298> at least they realised there's no sound in space.
[21:44] <daveake> where are the trees?
[21:44] <Laurenceb> "sapce"
[21:45] <Laurenceb> wuuuttt
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[21:47] <Laurenceb> he didnt ask them now airship to orbit is going
[21:52] <arko> Evening gents
[21:52] <fsphil> howdy
[21:53] <SpeedEvil> evening
[21:53] <arko> Stuck at a lecture :/
[21:53] <arko> Firgured irc on the tablet will pass time
[21:54] <fsphil> what's the subject?
[21:54] <arko> MOSFETs
[21:54] <fsphil> ooh
[21:54] <arko> Really easy
[21:55] <SpeedEvil> why is Vgs ( th) not the voltage you care about when selecting a fet?
[21:55] <SpeedEvil> that seems to be the most commonly confused bit in ##electronics
[21:56] <arko> Like the maximum Vgs?
[21:57] <fsphil> the bulb only got to 26km
[21:57] <daveake> Yeah but the holder did weigh half a ton
[21:58] <fsphil> it did look a tad heavy
[21:58] <daveake> OK so what's the next HAB program on TV tonight?
[21:59] <arko> Well, a fet really acts as a voltage controlled resistor in a sense
[21:59] <Laurenceb> lol
[21:59] <Laurenceb> its like HAB all night
[21:59] <Laurenceb> theres at least one channel devoted to HAB
[21:59] <Laurenceb> jcoxon has a lot to answer for
[21:59] <Laurenceb> the declining standards of our TV
[21:59] <SpeedEvil> arko: it's really that the threshold voltage is the voltage at which it passes sat 250ua
[22:00] <arko> Ohh
[22:00] <arko> Yeah
[22:00] <mfa298> at this rate how long until we get HAB sales on QVC/Bid.tv
[22:00] <daveake> HABFactor
[22:01] <arko> Well, one you apply too much Vg you create a large depeltion zone which means you have saturated the current
[22:01] <arko> Once*
[22:01] <daveake> I'm a HABber Get Me Out Of Here
[22:01] <Laurenceb> lol
[22:01] <arko> HABusters
[22:01] <Laurenceb> HABenders
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[22:02] <SpeedEvil> http://www.youtube.com/embed/g_iYTwPdkeY?eurl=http%3A%2F%2Fb3ta.com%2Flinks%2Fpopular&html5=1
[22:02] <SpeedEvil> weather reporting
[22:02] <fsphil> HAB I got news for you
[22:02] <daveake> haha
[22:02] <mfa298> excellent
[22:02] <Laurenceb> HABination street
[22:03] <m0psi> poor old coco
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[22:03] <m0psi> her veranda all wet :-(
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[22:05] <arko> I think im going to slap my classmate for not knowing what a standard deviation is
[22:08] <Randomskk> that'd be mean
[22:10] <Upu> I think there was a joke in there
[22:10] <daveake> obviously below average
[22:11] <RG-lz1dev> stop it :D
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[22:29] <Laurenceb> how do i get wifi speed info in ubuntu?
[22:29] <SpeedEvil> iwconfig
[22:29] <SpeedEvil> there is probably a more GUI way
[22:30] <Laurenceb> yeah
[22:30] <Laurenceb> i was wondering if theres a gui
[22:30] <Laurenceb> so i can watch my data limit ticking away
[22:30] <SpeedEvil> dunno ibintu
[22:30] <SpeedEvil> also
[22:31] <SpeedEvil> if you're rsymcing the root dir
[22:31] <SpeedEvil> you can run rsyncs on top of it to pull off important tuff
[22:31] <Laurenceb> thats how im doing it
[22:32] <arko> Randomskk: hahaha
[22:32] <Randomskk> Laurenceb: just click the wifi icon
[22:35] <Laurenceb> and?
[22:35] <craag> Then click 'Information'
[22:35] <Randomskk> hmm I thiought that was it. try holding alt when you click or something
[22:35] <Randomskk> idk
[22:35] <jonsowman> wifi icon > connection information
[22:36] <Laurenceb> doesnt give me data info
[22:36] <jonsowman> oh you want data usage?
[22:36] <Laurenceb> yes
[22:36] <jonsowman> i thought you were talking about link speed
[22:36] <Laurenceb> nah
[22:37] <jonsowman> vnstat can do graphical output
[22:37] <jonsowman> if that's any use?
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[22:37] <SpeedEvil> watch -n 1 iwconfig wlan0
[22:39] <Randomskk> vnstat is probably for the best
[22:40] <Randomskk> Laurenceb: you totally said "wifi speed info"
[22:40] <Laurenceb> oops
[22:40] <Laurenceb> i must be dyslexic
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[22:49] <Lunar_Lander> fsphil, there is HAB night on BBC?
[22:50] <arko> You guys are going to be on the bbc?
[22:51] <Upu> already been on it but you need to look very carefully :)
[22:53] <arko> Haha
[22:53] <fsphil> Lunar_Lander: two hab launches on different channels. one with professional launchers, and one with JP aerospace
[22:53] <Upu> https://dl.dropbox.com/u/63720513/Images/manlab_upu.png
[22:53] <Upu> see the dude in the back ground with the sun glasses on
[22:53] <Upu> thats me
[22:54] <fsphil> glad you're wearing those, it's seriously bright back there
[22:54] <Laurenceb> wow
[22:55] <Laurenceb> that doesnt look creepy at all
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[22:56] <Lunar_Lander> fsphil, and JP aerospace is good or not so good?
[22:56] <Lunar_Lander> Upu, XD
[22:58] <fsphil> they seem quite happy to let people believe balloons can get to space
[22:58] <Lunar_Lander> oh
[22:58] <Lunar_Lander> and that zeppelin thing they try to do?
[22:59] <fsphil> dunno what that is
[23:00] <Lunar_Lander> I think some sort of high altitude airship
[23:00] <Lunar_Lander> the table tennis ball idea is quite interesting I think
[23:00] <SpeedEvil> fsphil: http://en.m.wikipedia.org/wiki/Project_Echo
[23:01] <fsphil> that was helped along by a rocket :)
[23:01] <SpeedEvil> lies!
[23:02] <Lunar_Lander> xD
[23:03] <m0psi> clever thing, quite the high bandwidth comms sat
[23:06] <Laurenceb> they think they can do "airship to orbit"
[23:07] <Laurenceb> using solar power, ion engines, and fuel cells
[23:07] <Laurenceb> its more that stupid
[23:07] <Lunar_Lander> yea definately
[23:07] <Laurenceb> but....
[23:07] <Laurenceb> if you use direct solar thermal
[23:07] <Lunar_Lander> also the website doesn't give much info on their ballon flights
[23:08] <Laurenceb> and try to get up to orbit in 20 minutes or so
[23:08] <Laurenceb> it might just work
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[23:08] <arko> Upu: hahaha nice 15ms of fame
[23:08] <Upu> did you see it ?
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[23:08] <arko> Yeah
[23:09] <Upu> https://picasaweb.google.com/118244444241111963790/201107ManLab behind the scenes pics
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[23:10] <SpeedEvil> someone needs to lock Laurenceb in a room with lots of assorted plastic films, a large vacuum chamber with solar simulator and high temperature ceramics
[23:10] <arko> You got to meet James May?!
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[23:10] <Upu> well sort of
[23:10] <Upu> he was very quiet
[23:10] <arko> Not shocked, haha
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[23:11] <Laurenceb> hehe
[23:11] <fsphil> May Day
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[23:11] <Laurenceb> https://lh6.googleusercontent.com/-sDEr5WmWCys/TjUPVb7jr4I/AAAAAAAAQx4/1qC8rbqIpuM/s720/IMG_8950.JPG
[23:11] <Laurenceb> lol
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[23:12] <Upu> best payload ever , camera in the arse
[23:12] <arko> Hahahaha
[23:12] <Laurenceb> i missed this
[23:12] <Laurenceb> wtf did they do?
[23:12] <arko> This is amazing
[23:12] <Laurenceb> why the huge pole?
[23:12] <Upu> thats Robs removal from tree device
[23:13] <Lunar_Lander> btw you said Dr Ben wasn't a doctor?
[23:13] <eroomde> billy bragg sounds a lot like bill bailey's impression of billy bragg
[23:13] <Laurenceb> why the "big cat"
[23:13] <fsphil> neither is Doctor Who
[23:13] <Lunar_Lander> yea
[23:14] <Lunar_Lander> as in germany it is a crime to call oneself Dr if you aren't one
[23:14] <Upu> https://picasaweb.google.com/118244444241111963790/201107ManLab#5635428292176649666 thats my fave pic
[23:14] <Upu> the balloons has so much gas in them it was insane
[23:14] <Randomskk> it's a crime to obtain advantage using an assumed title here too
[23:14] <eroomde> brian cox b4 makeup
[23:14] <eroomde> http://i.imgur.com/UGKyP.jpg
[23:14] <Upu> they went p at 8.5m/s
[23:14] <Lunar_Lander> yea
[23:14] <Upu> lol eroomde
[23:15] <Lunar_Lander> eroomde, ROFL
[23:16] <Laurenceb> eroomde: UGKy
[23:16] <Laurenceb> so they launched a big cat?
[23:16] <Lunar_Lander> and a budgie
[23:22] <Upu> http://youtu.be/bkd3hL6hJ80
[23:23] <Upu> gets mildly interesting at the end
[23:24] <Laurenceb> its private
[23:24] <Upu> try refresh it
[23:25] <eroomde> http://i.imgur.com/u9FX3.gif.jpg
[23:26] <Upu> yep lol
[23:26] <Laurenceb> .gif.jpg
[23:26] <Laurenceb> hmm
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[23:26] <Laurenceb> trollometer is firing
[23:26] <Lunar_Lander> danger?
[23:26] <Upu> no its safe Lunar
[23:27] <Lunar_Lander> XD yea that moment is classic
[23:27] <Laurenceb> ah no goatse
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[23:27] <Lunar_Lander> ?
[23:27] <Lunar_Lander> "and James was rubbish with the Shotgun"
[23:27] <eroomde> goatse
[23:28] <Lunar_Lander> wasn't Clarkson bashed by the BBC for drinking while driving later?
[23:28] <Laurenceb> in b4 eroomde posts it
[23:28] <eroomde> it's an infographic for writing good arduino code
[23:28] <eroomde> have a google Lunar_Lander
[23:28] <Lunar_Lander> XD
[23:28] <SpeedEvil> Upu: eeek!
[23:28] <eroomde> i actually lolled at this one
[23:28] <eroomde> http://i.imgur.com/iMPIk.jpg
[23:29] <Lunar_Lander> XD
[23:31] <Lunar_Lander> it's election day today btw
[23:31] <Laurenceb> really?
[23:31] <Lunar_Lander> in the US
[23:31] <Laurenceb> oh i never realised
[23:32] <SpeedEvil> err
[23:32] <SpeedEvil> not today in us
[23:32] <SpeedEvil> tomorrow
[23:33] <SpeedEvil> that is, it's still Monday there, not Tuesday
[23:33] <SpeedEvil> and Monday in UK
[23:33] <Laurenceb> /pedant
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[23:35] <KT5TK_QRL> Another dangerous HAB landing procedure: http://w5acm.net/b25_9830.html
[23:38] <SpeedEvil> also.
[23:39] <SpeedEvil> it's never a good sign when there is visible when quite zoomed out on the map at the predicted landing is 'kilovolt'
[23:40] <mrShrimp> Upu, you said I should use an end launch SMA connector for Veroboard, but the contact distance on the end launches I've looked at have been 4 mm, while the Veroboard is only 1 mm thick (I think)
[23:41] <mrShrimp> Is that not a problem?
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[23:41] <Randomskk> mrShrimp: uhm
[23:41] <mrShrimp> I just received the Ezcap dongle and the hab-filter btw
[23:41] <mrShrimp> ?
[23:42] <Randomskk> the end launch contact spacing is more likely around 1.8mm in the correct orientation
[23:42] <Randomskk> and the veroboard is probably also around 1.8
[23:42] <mrShrimp> oh
[23:42] <mrShrimp> ok
[23:42] <Randomskk> so you should be ok
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[23:43] <Laurenceb> "Wharton Intergalactic Spaceport"
[23:43] <Laurenceb> rigghhhttt
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[23:56] <Lunar_Lander> SpeedEvil, yea wasn't that a WB8ELK flight from California?
[23:56] <SpeedEvil> don't recall
[23:58] <Lunar_Lander> Laurenceb, can Helium damage the brain?
[23:58] <Randomskk> if sufficiently cold
[23:58] <Lunar_Lander> yea
[23:59] <Lunar_Lander> intergalactic spaceport...
[23:59] <Lunar_Lander> yea go to Andromeda by Cessna!
[00:00] --- Tue Nov 6 2012