highaltitude.log.20130111

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[00:54] <griffonbot> Received email: gonzo_ "Re: [UKHAS] Balloon supplier....?"
[01:00] <fsphil> http://www.flickr.com/photos/fsphil/8368107487/in/photostream
[01:00] <fsphil> was that kind of day
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[01:01] <spoz> hey
[01:01] <fsphil> hiya spoz
[01:01] <spoz> Im at work but just hoping to get some quick advise...
[01:01] <spoz> I need to buy a radio for receiving SSB
[01:02] <spoz> does anyone here have an opinion on the Alinco DJ-X11E
[01:02] <spoz> theres a yaesu vr500 on ebay for $300 but the reviews arent great, apparently it falls apart when you put a larger antenna on it
[01:04] <spoz> since I want to get into amateur radio anyway Im thinking about spending a bit more on the alinco but it's a rush decision to get it shipped today
[01:04] <spoz> the sdr is very tempting
[01:06] <spoz> is Darkside around at all
[01:07] <fsphil> I used a funcube dongle to track my last flight
[01:08] <spoz> I am half looking for an excuse to buy a radio too :P
[01:08] <spoz> I suppose I could use the easycap cards
[01:08] <spoz> for $12
[01:08] <fsphil> better to have a real radio though
[01:09] <spoz> yeah
[01:10] <Darkside> spoz: i'm here for a bit
[01:10] <Darkside> spoz: the DJ-X11E's are good
[01:10] <Darkside> if it's the one i'm thinking of
[01:10] <Darkside> you can even get quadrature outputs from it
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[01:11] <Darkside> yep thats the one i'm thinking of
[01:11] <Darkside> spoz: go for it
[01:12] <spoz> cool, Im guessing I should get the sdr cable too
[01:12] <Darkside> nah
[01:13] <Darkside> i won't bother to start with
[01:13] <Darkside> it's just a 3.5mm stereo cable anyway :P
[01:13] <Darkside> just use the normal audio output from it to start with - that's all you really need
[01:13] <spoz> oh ok
[01:13] <Darkside> and means less messing around on the PC side
[01:13] <spoz> cool
[01:13] <Darkside> just be aware that it has a SMA socket on it
[01:14] <Darkside> so you'll need adaptors to get to BNC or whatever
[01:14] <spoz> ah yeah, I'll likely be plugging in an sma antenna anyway
[01:14] <spoz> so that might be a plus
[01:14] <Darkside> mm
[01:14] <Darkside> a 1/4 wave monopole on a magbase works wonders
[01:14] <Darkside> especially when movile
[01:14] <Darkside> mobile*
[01:15] <spoz> hm ok
[01:15] <Darkside> anything with higher gain just means the radiation pattern is directed more towards the horizon
[01:15] <Darkside> which doesn't help if the balloon is above you
[01:16] <Darkside> ok bbl, need to head into uni
[01:17] <spoz> ok me too, gotta get back to work. thanks for the advice!
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[05:29] <meatmanek> hi hi everyone
[05:29] <meatmanek> Trying to figure out APRS settings with an HX1-144.390-10 transmitter
[05:29] <nigelvh> What specifically?
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[05:30] <meatmanek> relay path?
[05:30] <nigelvh> For a balloon?
[05:30] <meatmanek> yeah.
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[05:31] <meatmanek> (california, USA if it matters)
[05:31] <nigelvh> There are really only two options that aren't going to make people mad. Either A: No relay path, you're so high you shouldn't need it, or if in a remote area, B: use a path of WIDE2-1 to limit to only ONE repeat
[05:34] <nigelvh> If it's helpful, I fly in a remote area of washington, and use a path of WIDE2-1
[05:36] <meatmanek> and transmit rate of 30s sound reasonabrle?
[05:38] <nigelvh> Again depends on how populous an area. There's a couple trains of thought, the shorter the path, the more often you can transmit while creating the same load on the packet network. Also, balloons are rare and hams are interested so it's ok to transmit a little more frequently. I don't think I would go any more often than 30s. but values like 60s or 120s are certainly reasonable values as well. One thing I might reco
[05:39] <nigelvh> you'll want to transmit nearly constantly. At high altitudes, you'll get lots of recieving stations, so transmit less often.
[05:49] <meatmanek> your old message cut off at "One thing I might reco"
[05:50] <meatmanek> yeah I'll have to see if the OpenTracker USB can do altitude-based rates
[05:50] <nigelvh> One thing I might recommend is adjusting the rate based on altitude. At low altitudes (especially for recovery)
[05:52] <meatmanek> definitely
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[05:54] <nigelvh> Was there anything else you were wondering about?
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[05:59] <meatmanek> cutdown methods anyone?
[05:59] <meatmanek> aside from nichrome wire around a nylon string
[06:01] <nigelvh> Using a solenoid and a pin to let go of a loop, Same deal but with a screw and a motor. Powder charge to separate. Etc. Those all get more complicated and have a lower success rate. Nichrome and string is simple and proven.
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[06:37] <meatmanek> OpenTracker 2/USB/3, GPSDATA on or off?
[06:38] <nigelvh> I haven't used the OpenTracker, so I don't know. What does GPSDATA enable/disable?
[06:41] <oh7lzb> meatmanek: At this point I always advertise using the base91 comment telemetry extension. It contains a sequence number which can be used to figure out which packets were delayed or duplicate.
[06:42] <oh7lzb> When you're transmitting at a high altitude you're going to have some of your packets go through bugging igates and digipeaters which hold them for minutes (up to 15-20 minutes have been observed), and when they let the packets go, your balloon suddenly jumps back on the map.
[06:43] <nigelvh> Or you can used timestamped packets.
[06:43] <nigelvh> APRS supports either timestamped or not, you don't need the encoding for that.
[06:43] <oh7lzb> By using the base91 comment telemetry extension you put a machine-readable sequence number in the packet which is then used by aprs.fi to figure out which packets are delayed.
[06:43] <oh7lzb> Yeah, that's another option. aprs.fi can use that, too.
[06:43] <nigelvh> My custom tracker uses timestamped packets.
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[06:44] <nigelvh> But yes, using untimestamped packets can be problematic.
[06:44] <oh7lzb> If you put temperature/voltage in a machine-readable telemetry format instead of "23C 8.4V" in the comment, you'll get nice graphs of them on the web.
[06:45] <nigelvh> That is something I have yet to do. I have altitude set up right, but temp and voltage are just in the comment.
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[06:46] <meatmanek> k timestamps are good, got that
[06:47] <nigelvh> oh7lzb what does APRS.fi support for the format for those extra fields. Just a standard APRS "telemetry" packet, or does it read the comment field of a position packet?
[06:54] <oh7lzb> nigelvh: either standard telemetry packet, or the base91 comment telemetry format.
[06:54] <oh7lzb> Standard telemetry requires you to send additional packets and use much more bandwidth. Comment telemetry fits in the position packet and has better resolution.
[06:55] <oh7lzb> And adds a sequence number in the position packet as an added bonus.
[06:56] <oh7lzb> 8 bytes for sequence + 2 channels of telemetry. A normal telemetry packet is about as long as a position packet.
[06:56] <nigelvh> I'll have to go back and look at the spec. I don't recall the format for adding telemetry in the comment field of a timestamped packet. (I largely ignored the base91 packet specs)
[06:56] <oh7lzb> http://he.fi/doc/aprs-base91-comment-telemetry.txt
[06:57] <oh7lzb> There's the spec for comment telemetry. It works with all three packet formats (base91 compressed, mic-e, plaintext "normal" APRS)
[06:57] <oh7lzb> It's a new spec, implemented in Byonics trackers, APRSIS32, aprs.fi.
[06:58] <nigelvh> Ah, thank you, that's quite helpful. I built my tracker from scratch using the old APRS 1.0 spec available. Was thrown off for quite a while because that document lists the reverse order that the checksum stuff needed to be sent, so my packets wouldn't decode till I broke with the "spec"
[06:59] <nigelvh> After I got that working it was smooth sailing.
[06:59] <oh7lzb> APRS specifications are a mess.
[07:00] <nigelvh> I kinda got that impression while trying to find the best reference when doing my initial work.
[07:01] <Upu> morning all
[07:01] <nigelvh> Evening
[07:01] <oh7lzb> Good morning. Shower and coffee time.
[07:01] <oh7lzb> (As a sequence in that order.)
[07:02] <nigelvh> Similarly it's bed time for me here. Thanks for the input there oh7lzb
[07:03] <oh7lzb> Happy to preach. :)
[07:05] <nigelvh> It's helpful to have someone so involved to get the word from. I've done a lot of work implementing packet generation, and it's useful to learn these other options.
[07:05] <nigelvh> Anyway, evening.
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[07:20] <OZ1SKY_Brian> Morning
[07:27] <x-f> morning
[07:28] <x-f> good luck with the flight, OZ1SKY_Brian!
[07:28] <OZ1SKY_Brian> thank you, im on my way to the launchsite now
[07:29] <DrLuke> good luck and have fun :)
[07:29] <OZ1SKY_Brian> thanks DrLuke
[07:37] <DrLuke> when will the launch be?
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[07:40] <x-f> streaming from launch site is supposed to start in two hours
[07:40] <meatmanek> neat!
[07:40] <meatmanek> johnboiles and I are doing a launch in about 9 hours =P
[07:43] <x-f> cool
[07:43] <DrLuke> drat, in 2 hours I will be sitting in a voncrete bunker with no reception
[07:43] <DrLuke> concrete*
[07:43] <x-f> meatmanek, on which side of the world?
[07:43] <meatmanek> california
[07:44] <Darkside> caleeforneeiaa
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[07:46] <DrLuke> oh man, that movie...
[07:47] <DrLuke> whar waw its name? The wizard?
[07:49] <costyn> howdy
[07:51] <nosebleedkt> hi everybody
[07:52] <x-f> hi
[07:52] <DrLuke> hi
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[07:54] <meatmanek> anybody know, does PTT out on an OpenTracker USB put out 5v when high, or does it pull low?
[07:55] <Darkside> pulls low
[07:55] <Darkside> i think it's floating when the PTT is off, and is grounded when PTT is on
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[09:03] <nosebleedkt> http://www.businessinsider.com/canon-powershot-n-camera-unveiled-2013-1
[09:03] <nosebleedkt> extra small canon powershot 12MP
[09:03] <nosebleedkt> 300$
[09:03] <nosebleedkt> :D
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[09:15] <costyn> nosebleedkt: that article is very very light on details and pictures :(
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[09:15] <nosebleedkt> lets buy one then
[09:15] <nosebleedkt> :P
[09:16] <costyn> no thanks
[09:17] <cuddykid> stupid apple - they've rejected the app because "We found that your app only provides a very limited set of features" - muppets. There is no other app on the App Store that uploads location data to habitat.
[09:18] <WillDuckworth> isn't it the idea to be pretty basic
[09:18] <WillDuckworth> ?
[09:19] <cuddykid> yep!
[09:20] <cuddykid> takes ages and ages to get it reviewed too
[09:21] <fsphil> this is what I was worried about
[09:21] <SpeedEvil> sigh
[09:22] <cuddykid> I am working on a 'more complex' iOS version of spacenear which I'll bundle the tracker in with but that's not ready for submission yet
[09:22] <cuddykid> I'll get onto them and query their view :)
[09:22] <Darkside> just make it for android :-)
[09:22] <fsphil> join us
[09:22] <cuddykid> already done
[09:22] <Darkside> join usssssssss
[09:22] <cuddykid> haha
[09:22] <eroomde> i just switched to android
[09:22] <SpeedEvil> cuddykid: link?
[09:23] <eroomde> i am a happier panda now
[09:23] <cuddykid> https://play.google.com/store/apps/details?id=com.pexat.habhub.chasecartracker
[09:23] <fsphil> we got on da news, but prepare for highly inaccurate reporting: http://www.bbc.co.uk/news/uk-northern-ireland-20974384
[09:23] <WillDuckworth> happy pandas are what we need
[09:23] <cuddykid> space probe lol
[09:23] <fsphil> isn't it horny pandas they need?
[09:24] <eroomde> un-fermanaghed space probe
[09:25] <fsphil> the thing was spinning a lot, I'll try and make a panorama
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[09:27] <costyn> fsphil: I like the burst footage :)
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[09:27] <fsphil> I've a better copy somewhere
[09:28] <fsphil> https://www.youtube.com/watch?v=X2IpAN1BhfQ
[09:28] <fsphil> got most of the raw footage last night
[09:28] <x-f> i like the view with the fog
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[09:30] <STRATODEAN_Mark> Hello all. I decided to add an SD card to my arduino based tracker. Problem is when I add the SD.h class it uses up all the ram on my Uno and causes the board to continually reset. Has anyone else seen this and/or have any idea of a resolution?
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[09:31] <fsphil> well....
[09:31] <fsphil> oh
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[09:32] <costyn> I had that problem on mine
[09:32] <costyn> ended up not using the SD card at all heh
[09:32] <STRATODEAN_Mark> ah really
[09:32] <x-f> i had the same issue, so i switched to the SdFat.h lib, it eats less memory
[09:33] <STRATODEAN_Mark> ah great, i have seen that mentioned on forums but wondered what us here thought.
[09:34] <STRATODEAN_Mark> so switch to that and all will be sorted
[09:34] <fsphil> it's the FAT filesystem code that takes up most space isn't it?
[09:35] <daveake> I think so. So another option would be to write directly.
[09:35] <STRATODEAN_Mark> without using fat at all?
[09:35] <SpeedEvil> yews
[09:35] <SpeedEvil> make a big file on the card
[09:36] <daveake> Yes. You would need code to read it back, but that could be a different Arduino program, or a PC program
[09:36] <daveake> Or that
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[09:37] <STRATODEAN_Mark> I think just writing from the arduino is what i need, not interested in reading from it
[09:37] <SpeedEvil> then just write at the first and aubsaequent sectors
[09:37] <STRATODEAN_Mark> ok I'll look into this
[09:38] <SpeedEvil> for bonus points, implement something to skip through the file to a blank bit, if you reset
[09:39] <daveake> Absolutely. Otherwise a reset of landing would be, unfortunate
[09:39] <daveake> on
[09:39] <fsphil> yea a crc on each block might do
[09:40] <SpeedEvil> or just blank the file on a PC, and check the first byte for blankness
[09:41] <SpeedEvil> if not, move on 16k
[09:41] <fsphil> is that how big a sector is?
[09:41] <SpeedEvil> no
[09:42] <SpeedEvil> but if you're doing it on a slow micro, and you want to get through several meg fast...
[09:43] <STRATODEAN_Mark> ok thanks guys for your help
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[09:44] <Dutch-Mill> Morning...
[09:44] <fsphil> g'morning Dutch-Mill
[09:46] <Dutch-Mill> pwring the set let's see if i can track SKYHAB
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[09:51] <griffonbot> Received email: chris hillcox "[UKHAS] Re: Offline GPS logger as an altimeter"
[09:59] <griffonbot> @DutchMillbt: High altitude balloon #ukhas SKYHAB Jutland, Denmark 10:00 UTC #hamradio 434.075Mhz 7N2 50 baud RTTY SSB tracking... [http://twitter.com/DutchMillbt/status/289672832403771392]
[10:01] <griffonbot> Received email: Andrew Myatt "[UKHAS] HABJOE1 - Friday 4th January 2013"
[10:01] <griffonbot> Received email: Colin Hardy "Re: [UKHAS] Balloon supplier....?"
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[10:27] <fsphil> nice shot: http://www.flickr.com/photos/31197521@N02/8353587012/in/photostream
[10:27] Geoff-G8DHE (5d61a0c6@gateway/web/freenode/ip.93.97.160.198) joined #highaltitude.
[10:28] <costyn> very pretty
[10:28] cuddykid (~acudworth@92.40.254.10.threembb.co.uk) joined #highaltitude.
[10:29] <x-f> yup
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[10:29] <x-f> in other news - SKYHAB chase car is streaming - http://skalsballoon.blogspot.dk/
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[10:30] <x-f> ah, wait, it's a recording
[10:30] <costyn> strange place for that receiver 'skalsefterskole'
[10:30] <costyn> in the middle of a field :)
[10:33] <Geoff-G8DHE> Are you preparing it in the hall or outside ?
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[10:43] Action: SpeedEvil tests the android app.
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[10:43] <SpeedEvil> woo!
[10:43] <SpeedEvil> shiny
[10:44] <craag> Skyhab's up.
[10:44] <costyn> nice
[10:44] <costyn> so much for the launch location webcam then :)
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[10:45] <cuddykid> apple's "blah_chase" is on the map
[10:46] <costyn> heh
[10:46] <costyn> i see only f00f_chase in Australia
[10:46] <SpeedEvil> err
[10:46] <cuddykid> looks like they were in the car park when they were testing& lol
[10:46] <SpeedEvil> Australia?
[10:46] <costyn> sorry
[10:47] <costyn> didn't zoom out enough
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[10:47] <costyn> i'm dumb
[10:47] <SpeedEvil> Scotland. you can tell by the fact it's 9c outside, and not on fire.
[10:47] <SpeedEvil> :-)
[10:47] <costyn> yea... i just saw perth and dundee
[10:48] <SpeedEvil> hah
[10:48] <costyn> heh... there's a town in Denmark called Middelfart
[10:48] <SpeedEvil> I'm not chasing - was just trying out the tracking software
[10:48] <costyn> skyhab chase on the map now too
[10:48] <SpeedEvil> neat.
[10:48] <costyn> cuddykid: I don't see the apple chase thingy anywhere?
[10:49] <SpeedEvil> the balloon is almost directly east of me
[10:49] <cuddykid> costyn: I hadn't updated the map, it's gone now, but it was there
[10:49] <fsphil> it's north from here
[10:49] <SpeedEvil> or do I mean west
[10:49] <costyn> ah
[10:49] <fsphil> that's never happened before :)
[10:49] <fsphil> no wait, there was a glasgow launch once
[10:49] <fsphil> that's north too
[10:50] <SpeedEvil> east. :-)
[10:50] <costyn> still looks perilously close to the coast
[10:50] <daveake> 5.5m/s. Anyone know what the prediction is set up for?
[10:51] <fsphil> does it use the live speed?
[10:51] <daveake> Even I wouldn't fly that prediction, and you know how some have my flights have gone :p
[10:51] <SpeedEvil> there is a lot of blue around there
[10:51] <daveake> of my*
[10:52] <costyn> well they have the national gaurd standing by with a boat
[10:52] <daveake> True. Would be good to see that on the map :)
[10:52] <Geoff-G8DHE> Not sur they have a lot of choice!
[10:52] Action: costyn mumbles something about connections
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[10:53] <costyn> cuddykid: anyways, will be cool if the tracker is going to be in your app too.
[10:53] <costyn> cuddykid: very useful
[10:54] <costyn> cuddykid: I'd pay for that
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[10:58] <fsphil> sssh
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[11:00] <lz1dev> costyn: a beer for a tracking app ?
[11:00] <costyn> lz1dev: sounds reasonable
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[11:00] <lz1dev> http://rossengeorgiev.github.com/habitat-mobile-tracker
[11:00] <lz1dev> there you go
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[11:01] <costyn> lz1dev: cool
[11:02] <costyn> lz1dev: does the chase car mode work too?
[11:02] <lz1dev> yes and no
[11:02] <lz1dev> the code is all there, but there is a little thing called CORS
[11:02] <lz1dev> thats currently prevending data to be pushed to habitat
[11:04] <costyn> ah
[11:05] <costyn> what is CORS?
[11:05] <lz1dev> cross origin resources sharing
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[11:06] <daveake> Prediction and coast moving closer
[11:07] <SpeedEvil> lz1dev: what's needed to fix that, I forget. can some XML on habitat do it?
[11:08] <lz1dev> SpeedEvil: the simple way is to get it hosted on habhub
[11:08] <costyn> lz1dev: whats preventing that?
[11:08] <lz1dev> or way for the couchdb to release an update
[11:08] <lz1dev> afraik nothing
[11:09] <mattbrejza> so you cant post the position to habitat in the browser?
[11:09] <costyn> lz1dev: well contact Randomskk
[11:09] <costyn> mattbrejza: not where it's hosted now, but if it's moved to habhub
[11:09] <lz1dev> sure, it wasn't ready a two days ago
[11:09] <costyn> ah :)
[11:09] <lz1dev> so its still a work in progress
[11:10] <mattbrejza> yea but whats stopping a POST request to habitat? is that what you cant do x-domain in a browser
[11:10] <mattbrejza> ?
[11:10] <lz1dev> the browser is stopppign it
[11:10] <lz1dev> askes the server, hey can i use this resouce, server says nope
[11:11] <mattbrejza> mm odd
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[11:16] <lz1dev> costyn: http://rossengeorgiev.github.com/habitat-mobile-tracker/test-iphone3g.html
[11:17] <lz1dev> thats how it looks on a phone
[11:17] <x-f> SKYHAB stream is on
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[11:18] <x-f> he's worried, must be Trevor
[11:19] <navracwork> yep, definatly worried looking
[11:19] <mattbrejza> wasnt expecting that
[11:19] <mattbrejza> did they have to launch today?
[11:19] <navracwork> leaky balloon
[11:20] <navracwork> oops
[11:20] <mattbrejza> is odd how the ascent rate has fallen away
[11:21] <mattbrejza> ah craag is on the globaltuners
[11:21] <craag> yep
[11:22] <daveake> I dont think it's leaking
[11:22] <daveake> It was doing 3.3 earlier; 4.2 now
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[11:23] <navracwork> it won't be the first balloon that hasn't had a stable ascent rate
[11:23] <mattbrejza> would also have to be a very big leak to have any effect
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[11:25] <craag> Strong signal on the dokkum globaltuner.
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[11:26] <Dutch-Mill> Hi craag what's te frequency
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[11:26] <PE2G> Which freq is SKYHAB on?
[11:26] <daveake> 075 according to spacenear
[11:26] <craag> 434,0745
[11:26] <Dutch-Mill> thankz
[11:27] <PE2G> Thanks!
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[11:27] <navracwork> a fiver says it will burst
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[11:27] <mattbrejza> im not going against you
[11:28] <fsphil> I bet one mini-mars bar that it's going to float
[11:28] <cuddykid> costyn: working on it :) - at the moment: http://i.imgur.com/vmyTO.jpg still a lot of work needed though
[11:28] <fsphil> I'm not being specific about the material it floats in
[11:28] <daveake> lol
[11:28] <navracwork> thats cheating....
[11:28] <daveake> Was about to say :)
[11:28] <navracwork> I'm not taking that bet, the mini mars is ok - but the postage...
[11:29] <daveake> I don't think we've had a slow 800g flight, so not seen one float (in the air). I suspect it won't
[11:29] <mattbrejza> what mapping api is that cuddykid ?
[11:29] <cuddykid> mattbrejza: apple's MapKit
[11:29] <mattbrejza> lol apple maps
[11:29] <mattbrejza> at least it wont put the balloon in the wrong place
[11:29] <cuddykid> yeah, I've requested a google iOS maps api key, but no luck yet
[11:30] <cuddykid> still, apple maps is slowly getting better (ie. the black and white satellite imagery is now colour over me :) )
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[11:33] <costyn> lz1dev: yea I tried it on my iphone
[11:33] <daveake> Afternoon Brian
[11:34] <OZ1SKY_Brian> crappy cellphone inet here
[11:34] <daveake> That's an underfilled balloon
[11:34] <costyn> cuddykid: did you see what lz1dev is working on? http://rossengeorgiev.github.com/habitat-mobile-tracker/test-iphone3g.html
[11:34] <daveake> (sorry for stating the obvious)
[11:34] <cuddykid> costyn: yep
[11:35] <cuddykid> costyn: I have a couple of extra features planned - like using compass in iPhone to tell you which direction etc payload is
[11:35] <costyn> cuddykid: nice
[11:35] <Darkside> cuddykid: that's what a 3-element yagi and a radio are for!
[11:35] <cuddykid> haha
[11:35] <Darkside> who needs compasses
[11:35] <costyn> lz1dev / cuddykid : would be nice if you could send expected landing point to your google maps or apple maps navigation software
[11:36] <cuddykid> costyn: yeah, I was planning to grab that from spacenear
[11:36] <mattbrejza> ive seen map apps that put a cone from your current location to show what direction youre facing
[11:37] <costyn> is that Trevor on the stream?
[11:37] <PE2G> RX is very difficult here because of local QRM
[11:37] <daveake> OZ1SKY_Brian I reckon it's averaged 4.2m/s. At that rate burst will be 29.7km rather than the 27.5km in the live prediction
[11:38] <GMT> difficult to use a 3-ele yagi & radio while driving - not impossible, but 'somewhat challenging'
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[11:38] <daveake> Darkside is changing the live prediction for that burst altitude
[11:38] <costyn> convenient that they speak English in Denmark :P
[11:38] <Darkside> GMT: you should see what we do
[11:38] <mattbrejza> theyre gonna have a shock after he does that
[11:38] <costyn> mattbrejza: heh
[11:38] <daveake> yup
[11:39] <mattbrejza> at least theres nothing to crash into in australia
[11:39] <Darkside> GMT: http://projecthorus.org/wp-content/uploads/2011/04/DSC_3567-Custom.jpg
[11:39] <GMT> costyn: there is an automatic translation facility within the IRC s/w
[11:39] <Darkside> see those yagos?
[11:39] <Darkside> yagis*
[11:39] <costyn> GMT: I mean the livestream :)
[11:39] <costyn> http://skalsballoon.blogspot.dk/
[11:39] <Darkside> ok i've changed the predicted burst height
[11:39] <Darkside> dunno how long until it updates
[11:39] <costyn> Darkside: whoops... indeed
[11:39] <lz1dev> costyn: you meen predicted landing?
[11:40] <Darkside> ah
[11:40] <costyn> lz1dev: yea
[11:40] <Darkside> there we go
[11:40] <daveake> there
[11:40] <Darkside> oh dear
[11:40] <daveake> ouch
[11:40] <lz1dev> costyn: its there.
[11:40] <costyn> lz1dev: cool
[11:40] <Darkside> and this, dear kiddies, is why you fly a cutdown device
[11:40] <daveake> lol
[11:40] <Darkside> which is controllable from the ground
[11:40] <Darkside> maybe i shoudl start selling them
[11:40] <Darkside> <_<
[11:40] <daveake> :)
[11:40] <mattbrejza> or dont fly when its due to land <10km from water
[11:40] <costyn> I think Trevor hasn't seen the updated landing spot
[11:41] <daveake> Why isn't Tervor on here?
[11:41] <costyn> daveake: dunno
[11:41] <Darkside> i think he has now
[11:41] <Darkside> lol
[11:41] <Darkside> who is the guy in the top stream
[11:41] <costyn> too busy talking to people around him
[11:41] <costyn> Darkside: I think that's Trevor
[11:41] <Darkside> lol
[11:41] <Darkside> it won't keep going up
[11:42] <Darkside> silly
[11:42] <costyn> Darkside: seeing as he has an English accent and an English name
[11:42] <Darkside> mm
[11:43] <Darkside> lol
[11:43] <Darkside> spain
[11:43] <Darkside> as if
[11:43] <Darkside> not bloody likely
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[11:43] <costyn> mailed him, asking him to come on IRC
[11:44] <costyn> he's making a lot of assumptions and guesses, which we already know the answers to
[11:44] <Darkside> i don;t think he's checking his mail
[11:44] <mattbrejza> tha mailing list convo has probably confused him, when we misread what balloon he had and suggested it might float if underfilled
[11:44] <Darkside> anyone know his phone number?
[11:44] <Darkside> or some other way of contact him?
[11:45] <Darkside> ooh
[11:45] <Darkside> make a fake payload?
[11:45] <Darkside> with the callsign "COME ON IRC"
[11:45] <costyn> hehe
[11:45] <costyn> yea
[11:45] <UpuWork> I think "put lots of gas in" was fairly clear
[11:45] <Darkside> lol
[11:45] <Darkside> "that can't be right"
[11:45] <Darkside> yes
[11:45] <Darkside> its someone messing up their coords
[11:46] <Darkside> lol
[11:46] <Darkside> aaand he;s gone
[11:46] <costyn> tried the videostream chat
[11:47] <UpuWork> whats the issue and why do we need to contact them ?
[11:47] <UpuWork> I have a phone number for Brian
[11:47] <Darkside> was just the guy on the stream saying wron gthings
[11:47] <Randomskk> UpuWork: btw who was the guy you put onto me this morning? I said he should email us but nothing through so far
[11:48] <costyn> UpuWork: well they're doing a lot of guesswork and worrying and we have some answers for them
[11:48] <Randomskk> which thread is this?
[11:49] <Darkside> that kid is staring intently
[11:49] <UpuWork> me ?
[11:49] <mattbrejza> heh they had t-shirts made
[11:49] <UpuWork> I've not spoken to you this mornign ?
[11:49] <Randomskk> UpuWork: no someone else did but apparently you gave them my phone number
[11:50] <Randomskk> (which is fine, just wanted to know if you knew them as they've not emailed yet)
[11:51] <costyn> I just realized Efterskole means afterschool :)
[11:51] <costyn> actually it just means scchool
[11:51] <costyn> nvm
[11:51] <daveake> Their only hope is a school .. of friendly dolphins
[11:51] <daveake> Or that boat :)
[11:51] <costyn> yea Trevor said something about a navy boat earlier
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[11:52] <mattbrejza> i want it to land on Mando
[11:52] <UpuWork> me ? I've honestly never given anyone your phone number
[11:54] <Darkside> urgh
[11:54] <costyn> Darkside: frustrating innit
[11:54] <Darkside> lol
[11:54] <Darkside> its so wrong
[11:54] <Darkside> it wil lnot keep going up
[11:54] <Darkside> it will equalise
[11:54] <mattbrejza> quite a lot of what is marked as sea might be tidal
[11:54] <Darkside> and float
[11:54] <Darkside> you idiot
[11:54] <costyn> Darkside: I think you should do your fake payload
[11:54] <Darkside> lol
[11:54] <Darkside> i don;t know how to do it
[11:54] <costyn> or UpuWork could call Brian
[11:54] <Darkside> UpuWork: didn't you do it?
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[11:54] <UpuWork> do what ?
[11:54] <UpuWork> lol
[11:55] <Darkside> make a fake payload
[11:55] <Darkside> to put on spacnear.us
[11:55] <x-f> it was natrium back then
[11:55] <Darkside> oh wait
[11:55] <Darkside> i think i can do it wiht the chase-car stuff
[11:55] <x-f> besides, the balloon is speeding up
[11:55] <daveake> 5.8m/s where did that come from?
[11:55] <Darkside> now 6m/s
[11:55] <Darkside> that's off
[11:55] <costyn> lolwut
[11:55] <Darkside> odd
[11:55] <daveake> Is that tracker code tried and tested or could it be telling fibs?
[11:55] <costyn> yay
[11:55] <Geoff-G8DHE> Wow 6.1
[11:55] <costyn> he mentioned IRC
[11:55] <Darkside> he just mentioned IRC
[11:56] <Darkside> oh god
[11:56] <x-f> ballast drop
[11:56] <costyn> FINALLY
[11:56] <Darkside> TREVOR
[11:56] <Darkside> HELLO
[11:56] <Darkside> x-f: i don;t think it's that complex
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[11:57] <Darkside> lol
[11:57] <costyn> Darkside: he just read my email :)
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[11:57] <Darkside> lol
[11:57] <Darkside> cool
[11:57] <Darkside> click the link on the tracker
[11:57] <Darkside> and it'll just work
[11:57] <x-f> it's their first launch, don't be so hard on him
[11:58] <UpuWork> ping cuddykid PCB's arrived
[11:58] <Darkside> its more that multiple people told them to either not launch, or overfill the balloon
[11:58] <Darkside> else it's going to go splash
[11:58] <cuddykid> UpuWork: ah excellent :D
[11:58] <Darkside> and they seem to have disregarded that advice
[11:58] <mattbrejza> UpuWork: pics or it didnt happen
[11:58] <cuddykid> lol
[11:58] <Darkside> back down to 3.7m/s again
[11:58] <x-f> Darkside, from what he was telling on the stream, they were aiming for a lot higher ascent rate
[11:59] <Darkside> lol
[11:59] <x-f> and it was higher on the start, the slowed down
[11:59] <x-f> then*
[11:59] <navracwork> yes - they were suprised when it didnt go up as fast - they had 750g free lift apparently
[11:59] <UpuWork> This board is 3.3V 8Mhz cuddykid ?
[11:59] <cuddykid> UpuWork: correct
[11:59] <cuddykid> oh no, what have I done wrong :P
[11:59] <UpuWork> Best order some new GPS modules I guess
[11:59] trevor (59f909e2@gateway/web/freenode/ip.89.249.9.226) joined #highaltitude.
[11:59] <Darkside> trevor: yo
[11:59] <UpuWork> Someone bought them all yesterday
[11:59] <navracwork> hello trevor
[11:59] <costyn> trevor: hello
[11:59] Action: UpuWork pats trevor
[12:00] <Darkside> bar at the bottom of the streen
[12:00] <costyn> trevor: we've been listening in on your livestream
[12:00] <Darkside> screen*
[12:00] <Darkside> type in there
[12:00] Nick change: trevor -> Guest26359
[12:00] <costyn> haha
[12:00] <Darkside> yes, there!
[12:00] <Geoff-G8DHE> Hi Trevor we are all watching you
[12:00] <Guest26359> HI this is Trevor in denamrk...with th efloater
[12:00] <cuddykid> UpuWork: I've got some rfms on their way to me, also got a sarantel here, I'll ship them up when they arrive (hopefully this weekend)
[12:00] <UpuWork> its not floating Trevor :)
[12:00] <costyn> Guest26359: so yea, its not likely to float
[12:00] <navracwork> it wont float - might go quite high though
[12:00] <Darkside> our calculations suggest it'll burst at about 29km or so
[12:01] <UpuWork> it is likely to end up in the sea
[12:01] <Darkside> we have changed the landing predictions to reflect this new calculated burst altitude
[12:01] <Guest26359> Oh that's nice. why not flat?
[12:01] <costyn> Guest26359: we changed the predicted burst altitude to match the current ascent ate
[12:01] <costyn> *rate
[12:01] <UpuWork> small balloon heavy payload its likely to burst just a little higher than expected
[12:01] <Geoff-G8DHE> Most of us are watching the video stream as well
[12:01] <Geoff-G8DHE> so we can hear you!
[12:02] <Darkside> floating a balloon is actually quite hard to do with a heavy payload. the only difference is that it'll ascend slower
[12:02] <costyn> Guest26359: and Netherlands, and Germany and Latvia and Hungary :)
[12:02] <x-f> and Australia
[12:02] <Darkside> <- Australian
[12:02] <costyn> Guest26359: you have a boat on standby?
[12:02] <costyn> Guest26359: cool
[12:03] <fsphil> prediction is back over land
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[12:03] <Darkside> Hey, most of us have done a sea landing - We've done on in Australia, and that's a pretty hard thing to do
[12:03] <fsphil> yea I did one, which is pretty good considering
[12:03] <Geoff-G8DHE> What camera is it ?
[12:03] <costyn> Geoff-G8DHE: GoPro HD in a case
[12:04] <Geoff-G8DHE> right
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[12:04] <costyn> MuVi?
[12:04] <fsphil> you'll struggle to open that gopro case :)
[12:04] <costyn> haha
[12:04] <fsphil> hah
[12:04] <Darkside> Trevor: we're seeing the ascent rate fluctuate considerably - the prediction will be using an instantaneous snapsot of the ascent rate, not the average
[12:04] <griffonbot> Received email: Geoff Mather "[UKHAS] Re: Hyowee 800g floater?"
[12:04] <daveake> Has the tracker code flown before?
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[12:04] <daveake> 'cos the ascent rate is back at 3.3m/s
[12:05] <UpuWork> no tracker has not flown before
[12:05] <daveake> It's hard to get the alt wrong but I guess it's possible
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[12:06] <fsphil> swift had a few changes in speed
[12:06] <daveake> Yeah I've seen it but not this much
[12:06] <daveake> Strange weather maybe
[12:07] <Darkside> So... bets on burst altitude?
[12:08] <navracwork> I'm going for 26km#
[12:08] <Darkside> We'r enot all UK people!
[12:08] <Darkside> :D
[12:08] <Darkside> <-- Australian
[12:08] <fsphil> close enough ;)
[12:08] <costyn> costyn: <-- Dutch!
[12:08] <daveake> lol
[12:08] <costyn> :)
[12:08] <Darkside> Nope.
[12:08] <Darkside> won't be losing gas
[12:08] <mattbrejza> wind on ground?
[12:08] <Darkside> were you measuring outside?
[12:09] <Darkside> even a light breeze can cause changes
[12:09] <costyn> Guest26359: did you fill inside our outside?
[12:09] <Darkside> yep, thats enough to vary the measured lift
[12:09] <daveake> That's plenty enough breeze to mess up the lift
[12:09] <Darkside> more than enough
[12:10] <costyn> Guest26359: the balloon will have acted as a sail, around building as well you get updrafts
[12:10] <Darkside> it's a pretty big area to catch wind - it'll give it more lift
[12:10] <fsphil> if there was a leak, it would probably be coming down by now
[12:10] <daveake> It hasn't leaked. It was underfilled
[12:10] <mattbrejza> your payload + parachute could have been heavier than you thought
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[12:10] <daveake> lol
[12:10] <OZ1SKY_Brian> hi
[12:10] <OZ1SKY_Brian> crappy inet
[12:10] <fsphil> howdy OZ1SKY_Brian
[12:10] <costyn> OZ1SKY_Brian: hiya
[12:10] <Darkside> OZ1SKY_Brian: i see my tracker code is working well for you
[12:10] <OZ1SKY_Brian> gets discon all the time
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[12:11] <daveake> Just look at the ascent curve on the map. Wrong shape for a leak.
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[12:11] <OZ1SKY_Brian> it seems to work very well yes:-)
[12:11] <costyn> OZ1SKY_Brian: the track for your chase car is working ok
[12:11] <navracwork> starting to see faint traces on the waterfall here
[12:11] <costyn> Dutch-Mill: you getting anything?
[12:11] <Geoff-G8DHE> A little more height and we should start to be able to hear it in the UK, can anyone confirm the actual frequency ?
[12:12] <Darkside> Geoff-G8DHE: tune around
[12:12] <craag> 434.0745
[12:12] <Darkside> it's going to be 434.075MHz +- 5KHz
[12:12] <Darkside> i'm sure youi can find it
[12:12] <costyn> PE2G: nice, got a decode I see
[12:12] <OZ1SKY_Brian> yes sometimes, needs restart now and then
[12:12] <Dutch-Mill> Nope Costyn... still just a few mile out of sight
[12:12] Action: fsphil waves
[12:12] <OZ1SKY_Brian> 434076 atm
[12:12] <Darkside> Trevor: we've noticed changes in the ascent rate through the entire flight.
[12:12] <OZ1SKY_Brian> no
[12:12] <fsphil> thinner air has less drag
[12:12] <Darkside> it seemt o eb averaging around 4m/s though
[12:12] <OZ1SKY_Brian> thats in usb with rev on
[12:13] <costyn> Guest26359: we
[12:13] <Darkside> Nope.
[12:13] <GMT> fsphil: did you have a launch earlier in the week?
[12:13] <fsphil> GMT: yep!
[12:13] <PE2G> costyn: Yes, but you won't believe what a mess I'm receiving
[12:13] <Darkside> the predictor uses an instantaneous snapshot of the ascent rate, not an average over time
[12:13] <costyn> PE2G: hehe
[12:13] <fsphil> the parachute might add extra drag
[12:13] <Geoff-G8DHE> just simpler as I have quite a few tracks on the waterfall as it is!
[12:13] <fsphil> and if the balloon is large it too can drag a bit
[12:13] <OZ1SKY_Brian> im on and off, important stuff please pm me
[12:13] <craag> OZ1SKY_Brian: No rev on here?
[12:13] <GMT> fsphil: didn't know about that until I read on the web y'day. No advanced launch notice?
[12:13] <Darkside> Baloon launches are always exciting :-)
[12:14] Nick change: craag -> craag_M0DNY
[12:14] <costyn> Darkside: so the predictor assumes the balloon will ascend that rate until burst to calculate the burst/landing points?
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[12:14] <Darkside> even more exciting when something is going wrong
[12:14] <Darkside> costyn: i think it uses whateer the last snapshotted ascent rate is when the predictor runs
[12:14] <fsphil> GMT: my last few launches have all been very rushed, not much time to notify
[12:14] <costyn> Guest26359: it's always exciting when it might or might not go into water
[12:14] <fsphil> the last one a few days ago I had no internet at the launch site at all
[12:14] <PE2G> costyn: Strong QRM but fldigi is able to extract at least something
[12:14] <costyn> Darkside: ok
[12:14] <Darkside> costyn: you can see the predicted landing site moving in and out, as the ascent rate varies
[12:15] <Darkside> for the predictions inland, it's using a 6m/s ascent rate, for the ones in water, it seems to be using a 4m/s ascent rate
[12:15] <costyn> Darkside: makes sense
[12:15] <Darkside> Trevor: Yeah, it won't work so well once it's already in teh air
[12:15] <costyn> Guest26359: the tracker uses the same code as the predictor
[12:16] <Darkside> the one you see on spacenear.us/tracker uses exactly the same predictor
[12:16] <Darkside> and will give you the same thing
[12:16] <meatmanek> electrolytic capacitors
[12:16] <meatmanek> bad idea?
[12:16] <Darkside> meatmanek: shoudl be fine
[12:16] <Darkside> it only 1 atmosphere difference
[12:16] <meatmanek> temp-wise
[12:16] <Darkside> yeah, fine
[12:17] <meatmanek> like is the electrolyte going to freeze
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[12:18] <costyn> Guest26359: the predictor on tracker is more accurate than the one you just ran
[12:18] <mattbrejza> green car should at least drive to bramming
[12:18] <Darkside> what costyn said
[12:19] <costyn> Guest26359: we can hear you on the stream :)
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[12:19] <Darkside> the predictor on the tracker is more accurate, assuming it bursts when we expect it to
[12:19] <navracwork> try entering the average ascent rate over the past 10 minutes rather than picking 6ms
[12:19] <Darkside> Trevor: run it with the average ascent rate, not 6m/s
[12:19] <Darkside> 6ms is a peak
[12:19] <daveake> I'd get the green car down to the E29 so he can get anywhere quickly
[12:19] <Darkside> the average is more like 5m/s or so
[12:19] <mattbrejza> meatmanek: most caps are rated to at least -40C
[12:19] <SamSilver> link for stream please
[12:19] <costyn> SamSilver: http://skalsballoon.blogspot.dk/
[12:20] <meatmanek> mattbrejza thx
[12:20] <Darkside> the tracker will be using the ascent rare you're seeing in the flight info box
[12:20] <SamSilver> costyn: thanx
[12:20] <Darkside> rate*
[12:20] <navracwork> if you use an average over the past few minutes it will be more accurate than an instantaneous reading
[12:20] <daveake> s/E29/E20/
[12:20] <costyn> Guest26359: the tracker is using the same calculation code as the predictor, so you're not getting any extra info from the snapshot predictor
[12:21] <Darkside> Trevor: you should get someone down onto the E20 highway we can see on the map
[12:21] <Darkside> that way they can do whatever way
[12:21] <Darkside> go*
[12:21] <fsphil> letting it go is the easy bit...
[12:21] <fsphil> well usually
[12:21] <Darkside> we'll know where it's going to end up when it bursts
[12:21] <daveake> Darkside That's what I said :)
[12:21] <Darkside> until that point, this is all guesswork
[12:21] <costyn> Trevor: we're giving you suggestions where to send the chase teams!
[12:21] <Darkside> educated guesswork
[12:22] <daveake> I like to get to a main road with a choice of directions - better than guessing
[12:22] <Darkside> Trevor: no! send him down to a crossroads
[12:22] <costyn> TREVOR: no!
[12:22] <Darkside> then he can go wahtever way
[12:22] <daveake> TREVOR Do this ^^
[12:22] <costyn> haha
[12:23] <x-f> Guest26359, pay attention to the IRC!
[12:23] <fsphil> PaN1C!
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[12:23] <Darkside> the E20
[12:23] <Darkside> looks good
[12:24] <costyn> Its definitely not going to land where the green car is
[12:24] <Darkside> we've been doing this for a *long* time
[12:25] <navracwork> starting to get partial decodes here in suffolk
[12:25] <fsphil> nice!
[12:25] <costyn> burst any time now
[12:26] <costyn> my bet is on 29200
[12:26] <fsphil> would probably need to be 40km for me to receive it
[12:26] <fsphil> I'm betting 31km
[12:26] <craag_M0DNY> I'll go for 29600
[12:26] <Darkside> I'm goign to bet 29.852km :-)
[12:26] <Darkside> +-5m
[12:26] <fsphil> hah
[12:26] <Darkside> :P
[12:26] <navracwork> dont burst yet - I need one good confirmed packet
[12:27] <craag_M0DNY> burst
[12:27] <costyn> hah
[12:27] <Darkside> ooh
[12:27] <lz1dev> float
[12:27] Last message repeated 1 time(s).
[12:27] <Darkside> here we go
[12:27] <Darkside> burst
[12:27] <fsphil> wheeeee
[12:27] <Darkside> BURST
[12:27] <costyn> ITS GOING DOWN
[12:27] <Darkside> ok
[12:27] <Geoff-G8DHE> its gone
[12:27] <fsphil> I loose
[12:27] <costyn> navracwork: too bad :)
[12:27] <SamSilver> pop
[12:27] <daveake> <daveake> Yeah I reckon 29.7
[12:27] <daveake> <daveake> 100 HAB points if I get that right :)
[12:27] <craag_M0DNY> costyn: I got 29138 as last packet, you win
[12:27] <daveake> Only 0.7 out :p
[12:27] <Darkside> so the predicted burst ppoint was pretty accurate
[12:27] <costyn> craag_M0DNY: hah thanks!
[12:27] <fsphil> 29.057
[12:28] <Darkside> now we wait for more data
[12:28] <fsphil> costyn was closer
[12:28] <costyn> 100 HAB points to me
[12:28] <navracwork> drat one packet and i must have been close to the receive record :-(
[12:28] <daveake> :D
[12:28] <OZ1SKY_Brian> puff
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[12:28] <Darkside> need more data...
[12:28] <Darkside> uh oh
[12:28] <gonzo_> never going to get high enough for me to hear then
[12:28] <daveake> lol @ pred
[12:28] <Darkside> wait
[12:28] <Darkside> not accurate
[12:28] <daveake> indeed
[12:28] <Darkside> wait for more data trevor
[12:28] <Darkside> give it a few minutes
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[12:29] <costyn> TREVOR: just get the chase teams to drive to the predicted landing spot, they don't have to wait
[12:29] <fsphil> I've never seen that happen before
[12:29] <Darkside> fsphil: i have
[12:29] <costyn> fsphil: yea weird
[12:29] <costyn> nice, he can do m/s to km/h conversions in his head
[12:29] <costyn> Trevor: that the predicted spot makes such a jump after burst
[12:29] <Darkside> the predicted landing site goign weird
[12:30] <Darkside> ther ew ego
[12:30] <fsphil> there it is
[12:30] <GMT> I'd send the green car to Bramming, or a bit further south, maybe Ribe
[12:30] <Darkside> Trevor: new predictions
[12:30] <Darkside> done
[12:30] <costyn> Trevor: there you go
[12:30] <daveake> Now if the green car was where we suggested ...
[12:30] <costyn> daveake: :)
[12:30] <Geoff-G8DHE> The prediction changed drantically , its now corrected
[12:30] <Darkside> Green car to E20, then head to G0rding
[12:30] <Darkside> asap
[12:30] <fsphil> Queen to bishop 5
[12:31] <costyn> fsphil: hehe :)
[12:31] <GMT> fsphil: nice one!
[12:31] <Darkside> Trevor: the predicted landing site will likely move around, but that area is a good place to get to
[12:31] <navracwork> depends how much balloon is left
[12:32] <costyn> Trevor: it'll slow down as it gets into thicker air
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[12:32] <costyn> Trevor: send him the coordinates by sms
[12:32] <Geoff-G8DHE> Junc 71 on the E20
[12:33] <daveake> Pred is on the E20 now :p
[12:33] <UpuWork> hope that moves
[12:33] <Darkside> and back south again
[12:33] <daveake> :)
[12:33] <Darkside> that's good
[12:33] <fsphil> at least there's no lakes nearby :)
[12:33] <Darkside> somewhere in that area
[12:33] <daveake> true!
[12:34] <Darkside> I'm not british!
[12:34] <daveake> lol
[12:34] <Darkside> gaarrrgh
[12:34] <Geoff-G8DHE> Look just east of Junc 71 plenty of lakes!
[12:34] <costyn> hehehehe
[12:34] <UpuWork> haha
[12:34] <fsphil> join usssss
[12:34] <Darkside> fsphil: never!
[12:34] <fsphil> lol
[12:34] <daveake> we have cookies
[12:34] <mattbrejza> youre flag has the union jack in it, close enough :P
[12:34] <mattbrejza> *your
[12:35] <Darkside> mattbrejza: i voted to become a republic!
[12:35] <mattbrejza> heh
[12:35] <costyn> OZ1SKY_Brian: you guys have a radio in your car as well right?
[12:35] <Darkside> mattbrejza: there's a song about losing the union jack
[12:35] <Darkside> mattbrejza: http://www.youtube.com/watch?v=iddXsl2i_Xs
[12:36] <costyn> Trevor: i mean is Brian recieving telemetry from the ballooon?
[12:37] <daveake> They should get to see it coming in to land
[12:37] <mattbrejza> yea, even scotlands had enough it seems
[12:37] <Darkside> daveake: maaaaybe
[12:37] <x-f> costyn, they must have to have one, they've been below the balloon all the time
[12:37] <costyn> daveake: they really have to chase the prediction point if they want that
[12:37] <OZ1SKY_Brian> costyn yes i have a radio in my car
[12:37] <costyn> OZ1SKY_Brian: ok cool
[12:37] <x-f> OZ1SKY_Brian, it's not uploading?
[12:37] <daveake> I mean see it aloft, not necessarily actually landing
[12:37] <daveake> Clear skies he says
[12:38] <costyn> x-f: he has crappy internet
[12:38] <costyn> Trevor: the gps will take some time to recover
[12:38] <OZ1SKY_Brian> x-f tryin, but mobil inet is crap out on the countryside
[12:38] <costyn> Trevor: it'll start working after it lands
[12:38] <UpuWork> radio trackers ftw ?
[12:40] <costyn> UpuWork: I'd say
[12:41] <GMT> skals1 chase-car is speeding!
[12:41] <costyn> GMT: yea I was gonna say
[12:41] <daveake> The interface for that changed
[12:41] <daveake> It expects m/s now not kph
[12:41] <daveake> So many chase car programs are currently broken
[12:42] <costyn> Trevor: have Rolf chase the predicted landing spot. They might spot it landing
[12:42] <cuddykid> :P
[12:42] <daveake> Has there been a live streamed landing yet?
[12:43] <costyn> heh
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[12:43] <costyn> Trevor: just have him take the 191
[12:43] <daveake> yup
[12:43] <Geoff-G8DHE> Either a bad GPS on the chase car or he has come off at Junc 72
[12:43] <costyn> Geoff-G8DHE: he got off
[12:45] <costyn> this is exciting
[12:45] <UpuWork> Has the GSM tracker reported any positions yet ?
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[12:47] <costyn> OZ1SKY_Brian: nice... hurry, you can see it land!
[12:47] <UpuWork> don't forget to stream from the chase car with all the excitement :)
[12:47] <costyn> UpuWork: well not likely at 6KM
[12:47] <UpuWork> be interested it if works at all
[12:48] <UpuWork> I can't help feeling if you want a graphic demonstration of why radio tracking is better you're getting it now
[12:48] <costyn> hehe
[12:48] <UpuWork> #preachingtotheconverted
[12:50] <costyn> trevor: yes please, please stream from chase car :)
[12:50] <daveake> #missingthetargetaudience
[12:50] <costyn> waaat
[12:50] <costyn> GPS text
[12:50] <costyn> OMG
[12:50] <GMT> skals chase car to continue on the 191, under the E20 motorway, then first left to Grene
[12:50] <costyn> <mind blown>
[12:50] <daveake> not bad 4km+
[12:50] <UpuWork> 4.2km
[12:50] <costyn> Trevor: we heard
[12:50] Action: daveake makes not for next flight :)
[12:51] <daveake> note
[12:51] <UpuWork> indeed very interesting to know
[12:51] <UpuWork> are they plotting those on a map somewhere ?
[12:52] <daveake> argh
[12:52] <costyn> :)
[12:52] <mattbrejza> lol theres another east road just above
[12:52] <mattbrejza> also i reckon slightly north of grene
[12:52] <costyn> and thats why you need someone with the tracker on a smartphone or laptop
[12:53] <Darkside> costyn: yup
[12:53] <costyn> Brian and Rolf are going to meet soon
[12:53] <daveake> chase cars crash into each other :p
[12:53] <Darkside> good thing brian is near
[12:53] <Darkside> else they'd lose sigal
[12:53] <costyn> Grene is not a village.. it's just a farm
[12:53] <x-f> Rolf will have to follow Brian's car :)
[12:54] <costyn> OZ1SKY_Brian: you missed the turn
[12:54] <UpuWork> I think Brians Dad is driving actuaslly
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[12:55] <Darkside> if rolf is watching the stream, then he should have tge tracker open too
[12:55] <costyn> agreed
[12:55] <Darkside> Trevor: if rolf has internet, get him to open the tracker
[12:55] <Darkside> they aren't watching IRC
[12:56] <Darkside> get him to open the bloody tracker
[12:56] <costyn> :)
[12:56] <costyn> haha
[12:56] <costyn> it'll cross the road they're on
[12:56] <costyn> haha
[12:56] <Darkside> Trevor: and tell them to LOOK UP
[12:56] <daveake> :D
[12:57] <Darkside> Trevor: tell them to follow brian
[12:57] <costyn> OZ1SKY_Brian: keep going !
[12:57] <Darkside> brian is about to pass them
[12:57] <fsphil> 4 minutes
[12:57] <daveake> Blue sky - they should see it
[12:57] <UpuWork> PANIC!!
[12:57] <costyn> hah
[12:57] <Darkside> where's my towel
[12:57] <fsphil> hah
[12:57] <daveake> Just f-ing move :)
[12:57] <cuddykid> lol, this is great
[12:57] <UpuWork> just drive down the road until you crashing to a balloon looking thing
[12:57] <fsphil> I forgot to bring my towel today
[12:57] <costyn> haha
[12:57] <Darkside> and this is why you have the tracker up in every chase car
[12:57] <costyn> hah
[12:57] <daveake> indeed
[12:57] <cuddykid> I don't get why if they are streaming video from chase car they haven't got the tracker up?!
[12:57] <Darkside> good lord
[12:57] <craag_M0DNY> First chase, I had laptop on the dashboard with spacenear + irc side-by-side, laptop on the passenger seat with dl-fldigi. That was fun.
[12:57] <Darkside> follow brian
[12:58] <UpuWork> 1km OZ1SKY_Brian on your right
[12:58] <UpuWork> house on the right
[12:58] <Darkside> TREVOR: GET HIM TO FOLLOW BRIAN
[12:58] <fsphil> I couldn't chase and drive at the same time
[12:58] <daveake> Getdown more like
[12:58] <Darkside> uh oh
[12:58] <costyn> Darkside: I think Rolf's chasecar app is no longer updating
[12:58] <Darkside> prediction is going to change
[12:58] <Darkside> path is deviating from the prediction already
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[12:59] <fsphil> it's further east than the prediction
[12:59] <cuddykid> need to take the road on the right at Gettrup I think
[12:59] <UpuWork> OZ1SKY_Brian go past the collection of houses and just stop
[12:59] <x-f> costyn, he's on the phone, probably internet suspended
[12:59] <costyn> x-f: good point
[12:59] <x-f> they spotted Brian i think
[12:59] <UpuWork> prediciton will change Trevor
[12:59] <Darkside> no it's not goign to be landing there
[12:59] <Darkside> Trevor: it won't land there
[12:59] <costyn> he's not reading IRC
[12:59] <Darkside> yeah
[12:59] <Darkside> i notive that
[12:59] <x-f> no data for two minutes
[12:59] <fsphil> brian is near
[13:00] <daveake> Use EYES :)
[13:00] <UpuWork> OZ1SKY_Brian keep going until you get to a left turn Tvillhovej and stop
[13:00] <Darkside> lol
[13:00] <Darkside> LOOK UP
[13:00] <UpuWork> look up and left
[13:00] <Darkside> TELL THEM TO LOOK UP
[13:00] <Geoff-G8DHE> http://www.g8dhe.net/skyhab_track_1.jpg
[13:00] <Darkside> GOOD LORD
[13:00] <Darkside> LOOK. UP.
[13:00] <x-f> it should be landing right now
[13:00] <DrLuke> sexy
[13:00] <fsphil> yea it'll be down now
[13:00] <Darkside> it'll have landed by now
[13:00] <cuddykid> yeah
[13:00] <fsphil> ooh new position
[13:01] <fsphil> oh that was the chase car
[13:01] <UpuWork> interesting Brian lost it or has gone out of range of 3G ?
[13:01] <fsphil> his car is updating
[13:01] <Darkside> brians position is still updating
[13:01] <fsphil> so he has internet
[13:01] <Geoff-G8DHE> streaming from chase has started
[13:01] <DrLuke> link?
[13:01] <costyn> balloon hasn't updated
[13:01] <OZ1SKY_Brian> landed, saw it
[13:01] <daveake> I see pointy hand waving
[13:01] <costyn> OZ1SKY_Brian: niiiice
[13:01] <UpuWork> yay :)
[13:01] <x-f> http://bambuser.com/channel/ladefogedskals
[13:01] <Darkside> nice
[13:02] <DrLuke> oh that's is friggin amazing
[13:02] <x-f> quite
[13:02] <daveake> live streaming ftw
[13:02] <DrLuke> how do you even have internet in the middle of nowhere
[13:02] <costyn> woa
[13:02] <costyn> they're opening the box
[13:02] <Darkside> DrLuke: *cough*
[13:02] <costyn> oh no
[13:02] <costyn> that's just the car
[13:03] <Geoff-G8DHE> http://www.g8dhe.net/skyhab_track_2.jpg
[13:03] <DrLuke> I can't even get more than 2 bars of reception in the middle of the city in germany
[13:03] <costyn> Geoff-G8DHE nice
[13:03] <gonzo_> it must be down about now ?
[13:03] <costyn> gonzo_: it is yes
[13:03] <UpuWork> there is a man running across a field
[13:04] <Darkside> where is this?
[13:04] <UpuWork> http://bambuser.com/channel/ladefogedskals
[13:04] <Darkside> oh
[13:04] <costyn> Darkside: 2nd video on here: http://skalsballoon.blogspot.dk/
[13:04] <DrLuke> I demand the picture to return
[13:04] <Darkside> costyn: i think i'm delayed
[13:04] <Darkside> or osmething
[13:04] <Darkside> working now
[13:04] <Darkside> i wasnt watching the live stream
[13:05] <DrLuke> that accent
[13:05] <DrLuke> that is english right?
[13:05] <costyn> DrLuke: yea
[13:06] <fsphil> that looks like the mag mount I have
[13:06] <Darkside> still no position update
[13:06] <Darkside> i wonder if the payload turned off on landing?
[13:06] <costyn> http://goo.gl/maps/HSgU9 according to Trevor
[13:06] <DrLuke> I hope they didn't put one of those big red emergency off buttons to the bottom
[13:06] <fsphil> which stream is which?
[13:06] <navracwork> those coordinates are off the coast of saudi
[13:06] <cuddykid> yes
[13:06] <costyn> navracwork: switch them
[13:07] <Darkside> hrmm
[13:07] <daveake> hmm chase bus bigger than mine :p
[13:07] <costyn> although I doubt that it's that far
[13:07] <Darkside> i dunno about being in the forest
[13:07] <mattbrejza> so noone has a radio on the ground...
[13:07] <costyn> Brian couldn't have seen it fall there
[13:07] <Darkside> i think that coordinate was from in the flight
[13:07] <costyn> mattbrejza: OZ1SKY_Brian does
[13:07] <Darkside> it may have lost lock
[13:07] <costyn> Darkside: yup
[13:07] <daveake> I see running across field
[13:08] Action: costyn too
[13:08] <fsphil> blair witch
[13:08] <fsphil> this won't end well
[13:08] <Darkside> thsi is also where a handheld scanner and a yagi come in handy
[13:08] <costyn> haha
[13:08] <Darkside> just DF the damn thing
[13:08] <daveake> yep
[13:08] <x-f> they got coordinates from the GSM tracker
[13:08] <costyn> x-f: yea but they're off
[13:08] <Darkside> x-f: we think they are wrong
[13:08] <jgrahamc> Sarah Lund is waiting for them in the forest
[13:08] <x-f> ah, i didn't check
[13:08] <Geoff-G8DHE> http://www.g8dhe.net/skyhab_track_3.jpg
[13:08] <Darkside> they are awhere the payload was earlier
[13:09] <DrLuke> uh oh
[13:09] <daveake> This is going a bit keystone-kops
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[13:09] <costyn> haha
[13:09] <costyn> bad idea
[13:09] <Geoff-G8DHE> That GSM position is really odd
[13:09] Nick change: aaaa_ -> Guest30765
[13:09] <Geoff-G8DHE> unless low level breeze took it north again
[13:09] <costyn> I dont trust it at all
[13:09] <GMT> all we need now if the Benny Hill yakkety-sax music!
[13:09] <Darkside> so what, they can't hear the telemetry from it?
[13:10] <daveake> http://www.youtube.com/watch?v=MK6TXMsvgQg
[13:10] <Geoff-G8DHE> There was a burst of telelmetry when he was copying the GSM position down
[13:10] <Darkside> it looks like they're jsut running from field to field
[13:10] <Darkside> daveake: thank you
[13:10] <Darkside> thsi is exactly hat i wanted
[13:10] <Darkside> that theme open in another tab
[13:10] <DrLuke> oh man
[13:10] <DrLuke> it fits soooo perfectly
[13:10] <Darkside> iLMFAO
[13:10] <Darkside> pissing myself laughing atm
[13:11] <DrLuke> my sides
[13:11] <costyn> that is hilarious
[13:11] <junderwood> new point
[13:11] <junderwood> 79m
[13:11] <daveake> ah better
[13:11] <costyn> ah yea nice
[13:11] <junderwood> probably on the ground
[13:11] <fsphil> there we go
[13:11] <DrLuke> nice
[13:11] <Darkside> middle of the field
[13:11] <Darkside> nice
[13:11] <DrLuke> I hove my flight will be half as exciting :)
[13:11] <daveake> TREVOR send them to 55.55719,8.89172
[13:11] <costyn> daveake: not reading this I think
[13:11] <x-f> Guest30765, ^^
[13:12] <costyn> daveake: and OZ1SKY_Brian decodd it, Im' assuming he's looking at his radio
[13:12] <Geoff-G8DHE> http://www.g8dhe.net/skyhab_track_4.jpg
[13:12] <costyn> "may"
[13:12] <Darkside> looks like they are hewading to the treeline separating th fields
[13:12] <x-f> what command center hasn't got multiple screens?
[13:12] <fsphil> they're not far
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[13:13] <costyn> man this livestream is pretty awesome
[13:13] <costyn> "YES WE HAVE IT"
[13:13] <Darkside> i think they're in the right field now
[13:13] <DrLuke> Congrats!
[13:13] <daveake> woohoo
[13:13] <Darkside> i hear shouting
[13:13] <daveake> I see running
[13:13] <Geoff-G8DHE> Great hunting
[13:13] <DrLuke> the benny hill theme paid off
[13:13] <fsphil> haha
[13:13] <x-f> hehe
[13:13] <daveake> lol
[13:13] <Darkside> running!
[13:13] <Darkside> i see it!
[13:13] <costyn> noooooo
[13:13] <Darkside> and there goes the stream
[13:13] <DrLuke> crap
[13:13] <daveake> damn
[13:13] <daveake> Ah back
[13:14] <costyn> nice
[13:14] <x-f> recovered!
[13:14] <daveake> Well done all :)
[13:14] <UpuWork> congrats :)
[13:14] <costyn> cue wiping away tears
[13:14] Action: DrLuke salutes
[13:14] <DrLuke> with a solitary tear in the corner of my eye
[13:14] Action: daveake turns music off
[13:14] <fsphil> now, try opening that gopro :)
[13:14] <costyn> those command center guys don't look happy enough if you ask me
[13:15] <fsphil> no balloon remains
[13:15] <fsphil> oh a little bit
[13:15] <UpuWork> congrats OZ1SKY_Brian I'm not so sure that would have gone so well without your intervention :)
[13:15] <costyn> UpuWork: unlikely :)
[13:15] <fsphil> yea congrats all
[13:15] <DrLuke> fsphil: it just blends in with all the other pixels
[13:15] <Darkside> now you can see it moving across the field :-)
[13:15] <daveake> Nice Denmark colours on the chute :)
[13:15] <DrLuke> haha
[13:15] <fsphil> lol
[13:16] <costyn> heh
[13:16] <fsphil> gotcha
[13:16] <DrLuke> quite the prankster
[13:16] <Darkside> well, that was a nice bit of excitement
[13:16] <costyn> it was
[13:16] <OZ1SKY_Brian> found
[13:16] <navracwork> that brightened up my friday
[13:16] <costyn> OZ1SKY_Brian: we saw, congrats!
[13:16] <DrLuke> nice stream
[13:16] <Darkside> OZ1SKY_Brian: we were listenign ot the bennyhill theme as we watched the video of you running around
[13:16] <x-f> OZ1SKY_Brian, good job!
[13:16] <OZ1SKY_Brian> :-)
[13:16] <UpuWork> we can see ti walking across the field thanks to your tracker Brian :)
[13:16] <costyn> navracwork: yup, got no work done at all the past hour
[13:16] <Geoff-G8DHE> http://www.g8dhe.net/skyhab_track_5.jpg
[13:16] <daveake> ditto
[13:16] <Darkside> OZ1SKY_Brian: yackety sax + the stream of you running around was the funniest thing i've seen in a long time
[13:16] Nick change: craag_M0DNY -> craag
[13:16] <Darkside> good job :D
[13:17] <fsphil> the balloon is moving on the tracker
[13:17] <fsphil> 0.1m/s .. hurry up guys!
[13:17] <UpuWork> walking across the field always cool :)
[13:17] <fsphil> 4km/h
[13:17] <daveake> not a bad speed
[13:18] <daveake> Ah UpuPost cheers UpuWork
[13:19] <mattbrejza> it looks like off the shelf trackers just dont cut it :P
[13:19] <daveake> who'dhavethunkit
[13:19] <mattbrejza> not really aimed at anyone on her though
[13:20] <mattbrejza> +e
[13:20] <DrLuke> on her
[13:20] <Darkside> *cough*chris*cough*
[13:20] <DrLuke> made me chuckle
[13:20] <Geoff-G8DHE> http://www.g8dhe.net/skyhab_track_6.jpg
[13:20] <daveake> fsphil said that the Spot on the NI BBC flight didn't work at all
[13:20] <DrLuke> beautiful
[13:20] <fsphil> yea no points at all except at the moment of launch
[13:20] <fsphil> that was the last it was heard from
[13:21] <mattbrejza> putting it in a gimble seemed to work for majed though
[13:21] <fsphil> I'm not sure if they started it correctly
[13:21] <costyn> mattbrejza: yea it did report quite nicely
[13:21] <GMT> any more info on Majed's flight?
[13:21] <costyn> GMT: yea he got some nice pics, even though the camera stopped working halfway through the flight
[13:21] <UpuWork> nps
[13:21] <DrLuke> from now on I demand that all launches contain a live stream of the hunt
[13:21] <DrLuke> or else they're forbidden from launching :)
[13:21] <GMT> did majed post the pics anywhere?
[13:21] <x-f> costyn, did Majed post pics of his gimbal system?
[13:21] <mattbrejza> wont work in the uk...
[13:22] <costyn> apparently it was a commercial thing, pics include a plastic hamburger; seems it was sponsored by a fastfood joint
[13:22] <costyn> x-f: no, I didn't see nay, but if you want I can ask, I have his email
[13:22] <x-f> costyn, nah, i just was curious
[13:23] <UpuWork> I approve of the colour
[13:23] <costyn> GMT: and locating it was trivial, the SPOT coordinates were spot on (harhar) but getting there was quite the trip through the desert
[13:23] <x-f> DrLuke, i'll think about that when we'll do a launch
[13:23] <DrLuke> x-f same
[13:23] <DrLuke> but it'll probably be really awful here in germany
[13:24] <GMT> I just wonder if majed did a write-up of the whole thing?
[13:24] <DrLuke> when I ride the train from my hometown to uni, I barely get any internet at all
[13:24] <DrLuke> only at the trains stations
[13:24] <costyn> GMT: no he didn't, just some stuff on IRC and in an email he wrote to me
[13:24] <Guest26359> I have to get the video, process it. sent it to DR (the bbc in denmark) for broadcast tonight. I'll send you a link to watch it live.
[13:24] <daveake> Upu and I have run a live stream from a few of our flights. Even had the walk-across-the-field on one of them
[13:24] <GMT> okay, thanks,
[13:25] <DrLuke> daveake: nice
[13:25] <costyn> daveake: how much MB data does all that live streaming use up?
[13:25] <DrLuke> I should just get a headmount gopro or something
[13:25] <costyn> DrLuke: haha
[13:25] <DrLuke> costyn: probably a lot
[13:25] <costyn> DrLuke: the contour camera's have a live HDMI out
[13:25] <DrLuke> nice
[13:26] <DrLuke> walk around with a HDD backpack
[13:26] <GMT> looks a bit chilly out there
[13:26] <daveake> costyn Not sure but UpuWork has a figure
[13:26] <DrLuke> with 4 stacks of redundant 10TB drives
[13:26] <DrLuke> and a car battery for powering it all
[13:26] <UpuWork> Not alot actually
[13:27] <UpuWork> last launch was 200Mb tops
[13:27] <daveake> Is Android --> batc possible?
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[13:27] <daveake> Better than carrying a netbook across a muddy field :)
[13:27] <costyn> UpuWork: that's not bad
[13:27] <UpuWork> I think I have it set to 1fps
[13:28] <UpuWork> but we don't have sound generally
[13:28] <costyn> daveake: that would be awesome, a live streaming app, although I'm not sure your average smartphone has the grunt to do the conversion
[13:28] <daveake> I have a Nexus 4 I'm sure it could manage :)
[13:28] <craag> Most phone cameras do hw h.264 encode, so it should be fine.
[13:28] <mattbrejza> you can video call? so surely can livestream
[13:28] <costyn> craag: ah right
[13:28] <daveake> indeed
[13:28] <costyn> mattbrejza: true
[13:28] <DrLuke> craag: mine does hw mp4 encoding
[13:28] <DrLuke> lmao
[13:28] <daveake> Heck, even my Pi can manage 10fps to batc
[13:29] <craag> Just need to write the app to point the h.264 stream at batc.
[13:29] <costyn> https://itunes.apple.com/us/app/broadcast-for-friends-bff/id551019882?mt=8
[13:30] <DrLuke> oh gosh, they stole my backronym!
[13:30] <DrLuke> I call my HAB "Black Forest Frontiers"
[13:30] <fsphil> not been following the conversation, but did you mention that batc do HD streams craag?
[13:31] <craag> DrLuke: mp4 is equivalent to one of the h.264 profiles iirc.
[13:31] <DrLuke> craag: then why is a 1 minute video 1 gb in size?
[13:31] <craag> fsphil: They might, I was about to set my pi one up and see how it looked.
[13:31] <fsphil> are you able to play the streams without using their flash client?
[13:31] <costyn> gonna try this bff app
[13:31] <fsphil> I tried to get a URL for mplayer but couldn't get anything to work
[13:32] <craag> fsphil: Afaik no.
[13:32] <fsphil> I'd love to just have mplayer or vlc playing it on my big screen
[13:32] <costyn> DrLuke: wel this is crap, you have to sign into facebook to use it
[13:32] <daveake> I have ffmpeg running to batc from the Pi
[13:32] <fsphil> the flash client doesn't scale well, goes all pixelly
[13:32] <craag> They are using wowza now I think, so it's possible, they just need to open their firewall i guess.
[13:32] <DrLuke> costyn: wrong adress
[13:32] <DrLuke> please feel free to try again
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[13:35] <costyn> well the BFF app works ok
[13:35] <costyn> just only to facebook which is really lame
[13:36] <craag> stab in the dark: Is it open source?
[13:36] <OZ1SKY_Brian> back in a warm car
[13:36] <costyn> craag: that BFF app?
[13:37] <craag> yeah
[13:37] <costyn> no, it's rubbish
[13:37] <costyn> trying the ustream broadcaster app now
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[13:40] <F6AGV> Bonjour André
[13:40] <OZ1SKY_Brian> what a nice day
[13:40] <costyn> OZ1SKY_Brian: yea very good flight
[13:40] <F6AGV> indeed very well !
[13:41] <craag> fsphil: http://batc.tv/streams/m0dny
[13:41] <x-f> was fun to watch
[13:42] <DrLuke> neat skyline
[13:43] <costyn> http://www.ustream.tv/channel/costyn#utm_campaign=unknown&utm_source=13056404&utm_medium=social
[13:43] <costyn> broadcasted from iphone
[13:44] <DrLuke> costyn: and now up the skirt
[13:44] <costyn> hehe
[13:44] <costyn> seems to wokr ok
[13:44] <DrLuke> where are you?
[13:44] <costyn> DrLuke: at work
[13:44] <costyn> wonder if it works on 3G
[13:45] <DrLuke> noooo!
[13:45] <costyn> brb
[13:45] <costyn> turning on 3g
[13:46] <DrLuke> do you even have reception form within the building
[13:46] <costyn> yea
[13:46] <F6AGV> bye
[13:46] F6AGV (58b5ed2e@gateway/web/freenode/ip.88.181.237.46) left irc: Quit: Page closed
[13:46] <costyn> DrLuke: this image is now being passed over 3G
[13:46] <DrLuke> also, I want your job if you get paid for streaming and chatting on irc :P
[13:46] <DrLuke> (actually I am getting paid for watching streams right now, lol)
[13:47] <costyn> ok so that was pretty easy
[13:47] <DrLuke> costyn: blackness here
[13:47] <costyn> DrLuke: yea just switched it off
[13:47] <x-f> costyn, it worked for a few seconds
[13:47] <DrLuke> no I mean, nothing at all got through since you switched to 3g
[13:47] <costyn> DrLuke: ah, ok... i had to reload the page for it to load
[13:48] <DrLuke> oooh
[13:48] <DrLuke> stupid ustream
[13:48] <costyn> i can turn it back on if you want to test more
[13:48] <DrLuke> could be problematic if you loose connection on the field
[13:48] <x-f> it loaded here and was all pixelly, but then went black
[13:48] <costyn> well I was switching from wireless to 3g
[13:48] <DrLuke> yeah, please turn it on again
[13:48] <DrLuke> I'm curious now :)
[13:48] <costyn> 3g or wifi?
[13:48] <DrLuke> 3g
[13:48] <x-f> 3g
[13:48] <x-f> wifi was fine
[13:48] <DrLuke> yep
[13:49] <costyn> lets see if it comes back by itself
[13:49] <DrLuke> it doesn't even come with reloading :)
[13:50] <DrLuke> now it's coming
[13:50] <costyn> hmm so I guess i have to press the record button
[13:50] <DrLuke> oh, actually pretty good quality
[13:50] <x-f> it came back for me without reloading
[13:50] <costyn> yup
[13:50] <costyn> x-f: good
[13:50] <DrLuke> is this 3g right now?
[13:50] <costyn> bad hair day
[13:50] <costyn> DrLuke: no wifi
[13:50] <DrLuke> haha
[13:50] <DrLuke> I also had a bad hair day today :P
[13:50] <costyn> actually I badly need a haircut
[13:51] <DrLuke> same
[13:51] <DrLuke> is that a mechanical keyboard?
[13:51] <costyn> no, the phone is sitting against the keyboard, hence the LOUD clicking
[13:52] <DrLuke> aww :(
[13:52] <x-f> tried to register on ustream, but it says "Username length must be between and characters!"
[13:52] <x-f> i'm confused
[13:52] <costyn> hehe
[13:53] <costyn> DrLuke / x-f you guys done? I'm feeling self-concious
[13:53] <DrLuke> yeah :P
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[13:58] <Geoff-G8DHE> Cheers all
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[14:03] <cjdavies> anybody here know anything about DGPS?
[14:04] <Darkside> sure
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[14:04] <Darkside> cjdavies: in general you shouldn't need it
[14:04] <Darkside> and since most of the DGPS stations broadcast at LF, it's too hard to rig up a receiver for it
[14:05] <Darkside> you're not goign to get enough extra accuracy for it to be worth it i think
[14:06] <eroomde> you assume this is for a hab Darkside
[14:07] <Darkside> no i don't :P
[14:07] <Darkside> i did have a quick glance over his website
[14:09] <eroomde> http://cjdavies.org/wp-content/uploads/2012/12/DSC01307.jpg ?
[14:09] <eroomde> she might need DGPS
[14:09] <eroomde> to do whatever it is that she does
[14:09] <costyn> haha
[14:09] <DrLuke> wat
[14:11] <DrLuke> so, basically I have around 10 boards with ubloxes soldered onto them which aren't needed anymore (the boards that is)
[14:11] <DrLuke> I wonder what I should do with all my ubloxes now
[14:11] <costyn> DrLuke: which version?
[14:11] <DrLuke> neo-6Q
[14:12] <eroomde> ping the list
[14:12] <eroomde> you might get some buyers
[14:12] <DrLuke> Some are broken though
[14:12] <costyn> DrLuke: you had a project which was cancelled?
[14:12] <UpuWork> lol
[14:12] <DrLuke> costyn: no, I just went through some revisions :)
[14:12] <costyn> ah
[14:12] <DrLuke> sometimes the dc-dc-converter's inductor went up in smoke
[14:12] <DrLuke> outputting a little more than the specified 3,3V
[14:12] <Darkside> >_>
[14:12] <DrLuke> (namely something around 8V)
[14:13] <costyn> geez
[14:13] <DrLuke> so...
[14:13] <costyn> poof
[14:13] <DrLuke> I used the inductors specified by the datasheet
[14:13] <DrLuke> the very exact ones
[14:13] <Darkside> anyone know what the 'charged' voltage for a 11.1v lipo is?
[14:13] <DrLuke> this is the only time a TI datasheet disappointed me
[14:13] <DrLuke> darkside: per cell: 4.2V charged, 3.4V discharged
[14:13] <Darkside> thanks
[14:13] <DrLuke> although the discharged could be more
[14:13] <DrLuke> not sure right now
[14:14] <Darkside> 12.6v
[14:14] <Darkside> well, it's almost there
[14:14] <Darkside> got it on a balance charger atm
[14:14] <DrLuke> nice
[14:15] <DrLuke> I should check which ubloxes aren't fried
[14:15] <DrLuke> probably those on the boards where the inductors didn't go up in smoke
[14:15] <costyn> that's almost logical
[14:16] <DrLuke> (which only were 2 of 4 boards anyways)
[14:16] <DrLuke> and a few more boards with a different dc-dc converter, as the specs changed from 1 lipo to 2 AA batteries
[14:16] <DrLuke> because apparently according to my boss, lipos are this huge fire hazard
[14:16] <Darkside> only if you treat them improperly
[14:17] <DrLuke> yep
[14:17] <DrLuke> but using a proper charging IC and a little bit of transistor magic should equal proper treatment
[14:18] <DrLuke> anyone wanna help me with guessing the exact position of the mounting holes? http://i.imgur.com/U0yg2.jpg
[14:18] <costyn> DrLuke: is that the right link? :)
[14:18] <DrLuke> ah god damn it...
[14:19] <UpuWork> lol
[14:19] <Darkside> loooooool
[14:19] <costyn> DrLuke: just be glad it wan't something else :)
[14:19] <Darkside> bahahahahahaha
[14:19] <Darkside> excellent
[14:19] <DrLuke> http://i.imgur.com/1ipoC.png
[14:19] <DrLuke> there we go :P
[14:19] <DrLuke> I hope
[14:19] <GMT> excellent (squared!)
[14:20] <costyn> DrLuke: you don't have these battery holder yet then?
[14:20] <DrLuke> costyn: I do
[14:20] <DrLuke> I just wanted to rant about the datasheet being crap
[14:21] <costyn> heh
[14:21] <daveake> Just tried "OS Broadcaster" for Android, and that works to batc :)
[14:22] <costyn> nice
[14:22] <DrLuke> cool
[14:22] <daveake> Strange program, but does work
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[14:24] <UpuWork> ping cuddykid
[14:24] <OZ1SKY_Brian> Before signing off from the chasecar, i would like to express my gratitude, to everyone who helped over the past few weeks with the tracker. Expecily UPU who spend hours and hours helping with the tracker. THANK YOU VERY MUCH ALL!
[14:25] <OZ1SKY_Brian> chase car signing off...
[14:25] <costyn> OZ1SKY_Brian: cool, glad it all worked out
[14:25] <UpuWork> I think you're the one who deserves the thanks Brian :)
[14:25] <UpuWork> congrats
[14:25] <OZ1SKY_Brian> thank you :-)
[14:26] OZ1SKY_Brian (~OZ1SKY_Br@80-62-117-204-mobile.dk.customer.tdc.net) left irc:
[14:27] <x-f> i like this guy
[14:28] <UpuWork> he's not done badly
[14:28] <x-f> dunno if you heard it on the stream, but Trevor said that Brian had a bottle of wine ready in case the payload had landed in someone's garden
[14:28] <UpuWork> he made a tracker up in 2 weeks
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[14:30] <griffonbot> Received email: Trevor Cousins "[UKHAS] Re: Hyowee 800g floater?"
[14:30] <costyn> x-f: hehe yea I had one too on my flight. It's on my list of items to take on launch day.
[14:30] <costyn> UpuWork: that's really impressive
[14:31] <x-f> i'll add it to my list too, that's a good idea
[14:31] <DrLuke> a bottle of wine wouldn't get you far in germany
[14:31] <DrLuke> you need some good beer to soothe angry souls
[14:33] <griffonbot> Received email: Costyn van Dongen "Re: [UKHAS] Re: Hyowee 800g floater?"
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[14:36] <DrLuke> So I've got a bit of cash to spend, I'm tending between a lab power supply and an infrared heater thingy for soldering
[14:37] <nigelvh> Do you do any radio/antenna work?
[14:37] <DrLuke> and I need some good tweezers, the cheap chinese ones broke when I dropped them...
[14:37] <DrLuke> nigelvh: some
[14:37] <nigelvh> Do you have a VNA?
[14:37] <mattbrejza> i would probably lean towards the oven, unless youre likely to work on something thatll need the psu over a low current 5V supply
[14:37] <DrLuke> I don't even know what that is
[14:38] <mattbrejza> also oven ~ £200, VNA ~ £20k
[14:38] <nigelvh> Yes, for a professional one.
[14:38] <DrLuke> I've only got 150¬ to spend
[14:38] <mattbrejza> so whats the cheapest vna you can get?
[14:38] <nigelvh> I have a wonderful instrument aimed at the hobbiest market that was about 300 pounds
[14:38] <DrLuke> and I don't do enough radio work to warrant buying such equipment
[14:39] <DrLuke> my sdr dongle works for all my needs so far
[14:39] <mattbrejza> £300 would have probably bought you one lead for a pro one :P
[14:39] <nigelvh> I do a fair bit of radio work, and I can guarantee that if mine broke I would repair it or buy a replacement on the spot.
[14:39] <mattbrejza> what do you have then?
[14:40] <nigelvh> http://sdr-kits.net/VNWA3_Description.html
[14:40] <costyn> nigelvh: what does it do?
[14:40] <nigelvh> I have a friend who has a used professional VNA, and I showed him mine, and he was extremely impressed with it's accuracy.
[14:41] <DrLuke> I love how the connector adapters appear to come in a wooden case
[14:41] <DrLuke> or does that cost extra
[14:41] <mattbrejza> yea ive used a 100k - 8GHz aligent one before
[14:41] <mattbrejza> but that seems neat
[14:42] <nigelvh> A vector network analyzer measures both the amplitude and phase of reflected signals, so you can get not only SWR at a frequency, but you can sweep frequencies, but you also get complex impedance so the capacitance and inductance of your tuned circuit/antenna
[14:42] <costyn> interesting
[14:43] <mattbrejza> if you have a RF filter/amp etc and put a VNA at each end, itll display the frequency and phase response
[14:43] <DrLuke> well, if I did a lot more radio work, this would be an instant buy
[14:43] <nigelvh> For example, I used to build an antenna, then check the SWR, but that just tells me it's bad or good, it doesn't tell me HOW good or HOW bad. The VNA will tell me exactly what's going on.
[14:43] <nigelvh> And a SWR meter only shows you at one frequency.
[14:45] <nigelvh> And it's a two port VNA, so you can measure the passthrough characteristics as well as the reflected characteristics. Say you've got a filter you're making, this will let you see both the SWR it will present to the transmitter, but also the characteristics of the pass band, as well as any delays in phase.
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[14:47] <nigelvh> For example, here's a small duplexer I have http://digitalnigel.com/wordpress/wp-content/uploads/2013/01/NARDA-Duplexer.jpg
[14:47] <mattbrejza> the one i used could do compression point too
[14:48] <craag> fsphil: Sorry, missed you on the stream, was fullscreened. It was only 7-10fps.
[14:48] <nigelvh> I'm certainly not skilled enough to do everything there is with this instrument. You can also download the software to check it out before you buy.
[14:49] <mattbrejza> at the moment there is a lab down the end of the room that i think is full of RF gear, although i have to ask nicely and think of an excuse to use
[14:49] <mattbrejza> but have no need atm
[14:49] <griffonbot> Received email: "[UKHAS] nice day in Denmark with SKYHAB !"
[14:49] <mattbrejza> but if i ever wanted my own that thing looks good
[14:49] <nigelvh> Here's also a screenshot of an antenna showing return loss, SWR, and a smith chart.
[14:49] <nigelvh> http://digitalnigel.com/wordpress/wp-content/uploads/2013/01/Receive_At_2M.png
[14:50] <DrLuke> pretty colors and circles
[14:50] <mattbrejza> lol thats a bit of a mess
[14:50] <DrLuke> I just learned all about bode diagrams at uni
[14:50] <DrLuke> pretty fun
[14:50] <nigelvh> Anyway, if you don't do much RF, then it's probably not worth it, but I know I would replace mine in an instant.
[14:50] <DrLuke> looking forward to calculate them by hand in the exam
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[14:51] <jonsowman> DrLuke: there are basic rules for constructing them
[14:51] <DrLuke> jonsowman: I know
[14:51] <mattbrejza> well you know having to work out the freq response by adjusting the sig gen and reading off the scope, VNA does it in a sec or so
[14:51] <mattbrejza> much easier :)
[14:51] <DrLuke> we also learned all about that
[14:51] <jonsowman> :)
[14:52] <jonsowman> nyquist diagrams are harder to construct
[14:52] <DrLuke> our prof basically showed us a few exemplary response curve, and told us to burn those into our memories
[14:52] <DrLuke> as we're going to need those almost every single time
[14:52] <jonsowman> yes it does involve roughly knowing the response of canonical systems
[14:52] <jonsowman> and then any complex system is a superposition of them
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[14:53] <DrLuke> well, I am proud that I can remember that a 1st order lowpass will have it's kneepoint with -3db, and then go down by 20db with every decade
[14:53] <jonsowman> yep
[14:54] <DrLuke> hah, I'm good
[14:55] <Darkside> DrLuke: so you're waht, 2nd, 3rd year?
[14:55] <DrLuke> first semester
[14:55] <DrLuke> lol
[14:55] <Darkside> hah
[14:55] <Darkside> cool
[14:55] <DrLuke> yeah
[14:56] <Darkside> we didn't get to bode plots and thigns like that until 2nd year
[14:56] <DrLuke> our linear electrical networks professor is amazing
[14:56] <DrLuke> he has real talent with teaching complicated stuff in a really comprehensible way
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[14:57] <DrLuke> I immediately understood why you use complex numbers to describe voltages and impedances
[14:57] <DrLuke> .oO(or maybe I'm just really smart?)
[14:58] <DrLuke> http://hackedgadgets.com/2013/01/10/skittles-sorting-machine-based-on-a-basic-stamp-2/
[14:58] <DrLuke> hahahaha
[15:00] <nigelvh> For a while I had a page connected to a DB with graphs of the ratios of different colors in skittles bags.
[15:00] <nigelvh> You could submit the counts from you bag to add to the DB.
[15:01] <nigelvh> Don't have it running anymore.
[15:01] <DrLuke> so?
[15:01] <DrLuke> was it relatively equal?
[15:01] <DrLuke> or was one color dominant?
[15:01] <nigelvh> I think it was red ones but only slightly
[15:01] <DrLuke> ah
[15:02] <nigelvh> Total number ranged from 57-60 in each bag, then the colors were split from there.
[15:02] <nigelvh> Anyway, off to work. Chat with y'all later.
[15:02] <DrLuke> I think it's just hilarious that they go through the trouble of mixing all the colors, just so a consumer can sort htem again
[15:02] <DrLuke> cya!
[15:04] <griffonbot> Received email: NickB "[UKHAS] Re: HABJOE1 - Friday 4th January 2013"
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[15:17] <eroomde> http://i.imgur.com/V7cJG.jpg
[15:17] <eroomde> boom
[15:17] <costyn> that is a sexy flame
[15:18] <costyn> curves in all the right places
[15:18] <griffonbot> Received email: Mark Jessop "Re: [UKHAS] nice day in Denmark with SKYHAB !"
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[15:20] <costyn> Darkside: I was gonna say, those don't look like the cars I saw on the stream today :)
[15:20] <cuddykid> lol
[15:20] <cuddykid> oh no, they put the go pro in a case!
[15:21] <costyn> funny how F6AGV always does free writeups :)
[15:21] <costyn> cuddykid: yes, I wonder if they got it open
[15:21] <cuddykid> it looks rather fogged up
[15:21] <costyn> cuddykid: quite
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[15:22] <daveake> If only advise had been given against doing that
[15:22] <costyn> cuddykid: not sure if this is from after the flight or just after a freezer test
[15:22] <UpuWork> lol
[15:22] <cuddykid> yeah, looks like it might be from a test
[15:22] <UpuWork> http://www.flickr.com/photos/31197521@N02/8353587012/in/photostream/
[15:22] <costyn> cuddykid: pic looks like its been taken inside on like a kitchen counter
[15:22] <cuddykid> costyn: yep
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[15:44] <cjdavies> damn, got distracted by a visitor
[15:45] <cjdavies> wrt DGPS, am I correct in thinking that the corrections are broadcast via radio, so the mobile receiver needs to have a normal GPS receiver *and* an appropriate radio receiver
[15:45] <cjdavies> then the correction is applied to the readings from the GPS receiver
[15:46] <cjdavies> essentially, I ideally need enough accuracy to navigate through a doorway (of a ruined building, so with visible sky)
[15:47] <craag> EGNOS is satellite-based and on the same freq band as the GPS sats isn't it?
[15:47] <craag> But I think the ublox already uses it?
[15:47] <cjdavies> yes, the ublox 6 that I have can do EGNOS
[15:48] <cjdavies> but (if it's actually working, which I need to check) it isn't accurate enough
[15:48] <cjdavies> it doesn't use it by default (maybe depending on firmware) because when the ublox 6 was released EGNOS was still in experimental phase
[15:48] <craag> Ah ok, I might look into that then.
[15:48] <cjdavies> so you have to enable it explicitly, at least with the firmware that the documentation I have relates to
[15:49] <cjdavies> afaik I have it enabled, but I will go & check with the ucenter program rather than my application to make sure
[15:51] <craag> I was wondering how much gain you could get from a static nearby ground station averaged over a month or so, then apply the current position offset to the payload or mobile unit position.
[15:51] <craag> Cheap and crude DGPS.
[15:51] <cjdavies> assuming the corrections can be averaged
[15:54] <cjdavies> RTK-GPS looks ridiculously accurate
[15:55] <cjdavies> though I suspect that an 'affordable' solution is $10k
[15:55] <cjdavies> or more
[15:55] <craag> Ah yes, ed was talking about that a while back.
[15:57] <cjdavies> but I might be able to get money from a grant to buy kit :D
[15:57] <craag> Sounds tricky to implement in 1 unit.
[15:57] <cjdavies> & I do like playing with expensive kit
[15:58] <craag> I take it this isn't to put on a balloon then?
[15:59] <cjdavies> no, this is for a pedestrian application
[15:59] <cjdavies> but when I was looking at receivers originally I found this place because of whoever it is who sells the Arduino compatible ublox 6 units
[15:59] <craag> Ah gotcha.
[16:00] <craag> If you have an RTK reference station nearby it should make things a lot easier.
[16:01] <craag> Still probably gonna be a bit heavy though!
[16:03] <cjdavies> it's for a computer science research project, to let somebody with a tablet computer explore a 3D reconstruction of a ruined cathedral just by walking around
[16:04] <cjdavies> so it needs to be accurate enough that when they physically walk through a doorway, the 3D reconstruction walks through the same doorway rather than walking through the 'wall' several meters away
[16:04] <cjdavies> so we're maybe talking sub metre accuracy
[16:04] <cjdavies> anyway, I've got lots of reading to do on dgps/rtk-gps now methinks
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[16:05] <craag> Did you see whether EGNOS was switched on?
[16:05] <craag> *on the ublox
[16:06] <cjdavies> I'll have to do that at the weekend
[16:06] <cjdavies> the receiver isn't here in the office with me
[16:06] <craag> I haven't seen a DGPS fix from mine, but didn't know much about it until a recently.
[16:06] <cjdavies> otherwise I'd just hang it out the window again :)
[16:06] <craag> Ah ok cool.
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[16:13] <SpeedEvil> cjdavies: unfortunate problems arosae
[16:14] <SpeedEvil> you do not merely have a GPS accuracy problem
[16:14] <SpeedEvil> but a multipath/attenuation problem
[16:14] <SpeedEvil> oh
[16:14] <SpeedEvil> ruined
[16:14] <griffonbot> Received email: John Underwood "Re: [UKHAS] Launch announcement - Saturday 12th January - Chalgrove"
[16:14] <SpeedEvil> if it has no roof, it's a bit easier
[16:15] <gonzo_> walls still result in errors
[16:16] <SpeedEvil> true
[16:16] <SpeedEvil> knock them down a bit more.
[16:16] <gonzo_> as the angles of the sats in a limited view of the sky will icrease the HDOP
[16:16] <SpeedEvil> and reflections of course
[16:16] <gonzo_> that wouls ease it. Where is the door: over in that pile of rubble with the rest
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[16:18] <SpeedEvil> 'we recreated your cathedral, onsite, using a 3d printed 1:1 model made from pink concrete'
[16:19] <gonzo_> hehe
[16:26] <craag> cjdavies: EGNOS is mostly enabled on my ublox, all but the satellite over the indian sea.
[16:30] <craag> But the documentation says you have to enable SBAS Test Mode to actually use it.
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[17:16] <meatmanek_> balloon in the air, kc9iae-11
[17:16] <meatmanek_> over east bay, california
[17:16] <meatmanek_> "seriously bad path"
[17:16] <meatmanek_> oops.
[17:17] <meatmanek_> http://aprs.fi/#!mt=roadmap&z=14&call=a%2FKC9IAE-11&timerange=3600&tail=3600
[17:17] <meatmanek_> cutdown is scheduled for roughly 2 hours from now
[17:18] <x-f> oo, another one today
[17:18] <x-f> good luck and an easy recovery!
[17:22] <meatmanek_> thanks
[17:22] <meatmanek_> anyway back on the road
[17:22] <arko> morning
[17:22] <meatmanek_> so ttyl
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[17:36] <eroomde> arko: morning
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[17:43] <eroomde> arko: we've been test firing! latest from 1730GMT
[17:43] <eroomde> http://i.imgur.com/5Ei1Z.jpg
[17:43] <DrLuke> beautiful
[17:44] <DrLuke> eroomde: what are you using as fuel?
[17:45] <eroomde> carbon monoxide and oxygen
[17:45] <eroomde> propellents that you could synthesise from the martian atmosphere
[17:46] <eroomde> we're looking at mars sample return systems
[17:46] <DrLuke> amazing
[17:46] <DrLuke> I never thought you could make fuel out of CO :)
[17:46] <Laurenceb> nice work
[17:47] <Laurenceb> whats the ISP?
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[17:50] <Hiena> eroomde: Nice diamonds! Is it a standing wave?
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[17:51] <eroomde> Laurenceb: not sure exactly for this particular run but it's about 290s
[17:51] <eroomde> Hiena: yes
[17:51] <Laurenceb> nice
[17:51] <Laurenceb> thats pretty high
[17:52] <Laurenceb> pity the boiling point is quite high
[17:52] <Laurenceb> guess thats less of an issue on mars - but CO2 frost might be an pain
[17:52] Nick change: noelsharpe_eaten -> noelsharpe
[17:52] <Hiena> Is it stable on the whole mixture range?
[17:52] <Laurenceb> s/high/low
[17:53] <eroomde> Hiena: that's what we're trying to characterise
[17:53] <eroomde> i mean there'll be bounds on the mixture ratios of course
[17:54] <eroomde> but we're basically going from just off stoichiometric to even more just off stoichiometric
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[17:54] <meatmanek_> welp
[17:54] <Laurenceb> water cooled?
[17:55] <meatmanek_> our balloon decided to stop sending GPS updates.
[17:55] <eroomde> nope
[17:55] <eroomde> copper heatsink nozzle
[17:55] <eroomde> short burns :)
[17:55] <Hiena> eroomde: Did you measured vibrations on the engine?
[17:55] <Laurenceb> ah
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[17:58] <Upu> was there a uXABEN up ?
[17:58] <arko> eroomde: wow dude nice
[17:58] <arko> i count 6 or 7
[17:59] <arko> i wish that was my day job :(
[17:59] <nigelvh> You're at JPL, what you complaining about.
[18:00] <arko> i dont get to do the fun stuff yet :(
[18:00] <arko> i write software thats important, but don't see action like that
[18:01] <arko> plus we dont do much "jet"
[18:01] <arko> more like Some Propulsion Laboratory
[18:01] <cuddykid> :)
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[18:01] <nigelvh_> Lol
[18:01] <meatmanek_> isn't there a balloon predictor than can use current APRS predictions
[18:01] <meatmanek_> er
[18:02] <arko> meatmanek_: are you not picking it up locally?
[18:02] <meatmanek_> can use historical APRS data to make better predictions
[18:02] <Laurenceb> but eroomde is doing it all wrong
[18:02] <arko> or are you depending on other aprs stations
[18:02] <Laurenceb> http://www.youtube.com/watch?v=CauuV7ypWNU&list=UUAvf028nQt0tYFM2vLEtpXg&index=4
[18:02] <Laurenceb> everyone knows thats a more sensible way to make a rocket
[18:03] <Laurenceb> /troll
[18:06] <Laurenceb> http://www.youtube.com/watch?feature=player_embedded&v=w9dskxN10N0
[18:06] <arko> wtf
[18:06] <Laurenceb> ^rofl
[18:07] <arko> bacon cutter
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[18:07] <arko> damn
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[18:08] <Hiena> Laurenceb: Epic fail. Coke can as a chamber...
[18:08] <arko> http://3.bp.blogspot.com/-poe3HKyFI5g/UIpbIiDLN6I/AAAAAAAAB_c/AoU-fJm90cE/s1600/Jackie-Chan-WTF-meme-face-70958233396.jpeg
[18:08] <arko> ^ my reaction to coke chamber
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[18:08] <eroomde> thanks laurenceb
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[18:09] <arko> who thought that would seriously work?
[18:09] <Laurenceb> note the test number
[18:09] <arko> Test 1256: We are getting desparate for results
[18:09] <Hiena> note the quality of the machining.
[18:10] <arko> must be trolls
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[18:11] <arko> looks like meatmanek_'s hab didnt stop transmitting
[18:11] <arko> they really should have ground stations :/
[18:12] <arko> their own
[18:13] <Hiena> Well, guess i'll build the next engine with bacon+NaNO3 mixture. Maybe it will has a decent burn rate.
[18:14] <mfa298> looks like the time they didnt get packets is when it burst.
[18:14] <fsphil> would anyone believe me if I told them this was from my payload? http://spaceinimages.esa.int/var/esa/storage/images/esa_multimedia/images/2013/01/a_rare_cloud-free_view_of_ireland_great_britain_and_northern_france/12472939-1-eng-GB/A_rare_cloud-free_view_of_Ireland_Great_Britain_and_northern_France.jpg
[18:15] <mfa298> fsphil: impressive picture
[18:15] <mfa298> I'd have trouble believing there was a cloud free day over that whole area :p
[18:15] <fsphil> there's cloud at the top right
[18:16] <arko> fsphil: i would need a lot of convincing
[18:16] <fsphil> drat
[18:16] <fsphil> well, it totally is. so there
[18:16] <arko> really?
[18:16] <fsphil> what more evidence do you need :)
[18:16] <arko> altitude? or stiched?
[18:17] <fsphil> this was totally not from an ESA satellite
[18:17] <arko> OH YOU
[18:17] <fsphil> called Envisat
[18:17] <fsphil> or anything like that
[18:17] <arko> did you work on it?
[18:17] <fsphil> sadly not
[18:17] <fsphil> or maybe thankfully, cause it stopped working last year. so they can't blame me :)
[18:18] <fsphil> but this is something I've wanted to do -- take the images from a payload, and stretch them out over a sphere
[18:18] <fsphil> to recreate a view of the ground
[18:18] <fsphil> so you'd see a small section of the earths surface
[18:19] <fsphil> getting lower resolution the further out from the payload
[18:21] <arko> heh
[18:22] <arko> eroomde: how much thrust does that give you?
[18:23] <eroomde> tht's about 3-4kN
[18:23] <eroomde> it's not particularly thrust optimised
[18:24] <eroomde> it's quite a wee engine
[18:24] <arko> cute
[18:25] <arko> hmmm
[18:25] <eroomde> just big enough to allow us to wonder around in the paramater space we're interestin in
[18:25] <arko> just wondering
[18:25] <arko> how does having 1% atm effect the start?
[18:25] <arko> or does it?
[18:25] <eroomde> it shouldn't affect it too much
[18:26] <arko> thought so
[18:26] <eroomde> so most rocket enginesare convergent-divergent at the nozzle
[18:26] <eroomde> the smallest diameter section is called the throat, and you design it such that a shock is induced there
[18:27] <eroomde> that shock acts as a barrier from an entropic point of view, i.e. information about what is going on in the nozzle and outside cannotbe passed ack into the combustion chamber
[18:27] <eroomde> that rather shields the combustion chamber from the outside dynamics
[18:27] <arko> oh that makes sense
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[18:27] <eroomde> the point of the nozzle is to expand the gas from the combustion chamber pressure to the ambient pressure, and the gas accelerates as it does so (giving better momentum exchange so better specific impulse)
[18:27] <meatmanek_> got signal agian
[18:28] <meatmanek_> already popped I guess?
[18:28] <eroomde> SO, if you outside pressure is lower, you just use a bigger nozzle
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[18:28] <arko> and I assume the rest of the plumbing is designed for it too
[18:28] <arko> 14psi to 0psi
[18:28] <arko> ohhh
[18:28] <arko> meatmanek_: dude you guys are going to land on the 5
[18:28] <arko> LOL
[18:29] <eroomde> only the nozzle has to know about the outside world
[18:29] <eroomde> the rest of the engine doesn't care
[18:29] <arko> right
[18:29] <meatmanek_> arko: haha right?
[18:29] <arko> i figured so, i've just never worked directly on rockets
[18:29] <meatmanek_> it's been following it for the whole drop
[18:29] <arko> meatmanek_: i was kinda hoping you would let it come to los angeles
[18:29] <arko> so i could recover it :P
[18:30] <arko> <-- wants to see hab on the way down
[18:30] <meatmanek_> arko: where do you live?
[18:30] <arko> Pasadena, CA
[18:30] <meatmanek_> oh LA
[18:30] <arko> yeah
[18:30] <arko> what's your payload radio?
[18:30] <meatmanek_> HX1
[18:31] <meatmanek_> -144.390-10
[18:31] <arko> cool
[18:31] <jcoxon> ping Upu
[18:31] <Upu> o7
[18:31] <arko> meatmanek_: dude, dont cause an accident
[18:31] <nigelvh> meatmanek_ looks like you'll have an easy recovery
[18:32] <arko> i was thinking about running up to the bay area this weekend
[18:32] <nigelvh> Crossed I5
[18:33] <meatmanek_> did it?
[18:33] <nigelvh> Gonna be on the ground any moment
[18:33] <meatmanek_> I have terrible 4g
[18:33] <jcoxon> what we tracking
[18:33] <arko> http://aprs.fi/#!call=a%2FKC9IAE-11&timerange=3600&tail=3600
[18:33] <meatmanek_> yeah
[18:33] <arko> omg
[18:33] <arko> it's on the 5
[18:33] <meatmanek_> oh no
[18:33] <arko> dude
[18:33] <meatmanek_> oh no oh no oh no
[18:33] <arko> someone blow it away
[18:34] <nigelvh> This is decending really slowly
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[18:34] <meatmanek_> 1000 ft/min?
[18:34] <meatmanek_> 15 ft/sec?
[18:34] <arko> glad im not driving on that interstate
[18:34] <meatmanek_> oh yeah it slowed down a bit I guess
[18:34] <meatmanek_> I wonder what ground level is there
[18:35] <arko> are you driving to get it right now?
[18:36] <arko> i think you are too close to the ground now
[18:36] <nigelvh> You may have plopped it right in the median
[18:36] <arko> to hit aprs stations
[18:36] <meatmanek_> no we had to go back to work
[18:36] <meatmanek_> we were planning on going out to rescue tomorrow
[18:36] <meatmanek_> but I guess we may go back
[18:37] <meatmanek_> uggghhhh
[18:38] <arko> you might be lucky
[18:38] <arko> 180.605 feet
[18:38] <arko> thats the altitude at the last known spot
[18:39] <nigelvh> Not sure where you're getting that. APRS.fi shows last spot at 1162ft
[18:39] <arko> it really looked like it wanted to join the traffic and become car
[18:39] <arko> nigelvh: i took the lat long at that last spot
[18:39] <arko> and looked up the ground alt
[18:39] <nigelvh> Oh, ground alt
[18:39] <arko> so he had about another 1000ft to go
[18:39] <arko> yeah :P
[18:39] <jcoxon> oh i think it'll miss the interstate
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[18:39] <nigelvh> Yeah, it's gonna be right next to the highway
[18:40] <jcoxon> its got a while to go
[18:40] <jcoxon> but it be nice and close
[18:40] <arko> yeah
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[18:40] <jcoxon> what happened with todays launch in denmark
[18:40] <jcoxon> it sounds like it was exciting
[18:45] <x-f> it was fun to watch, they had live streaming from the command center and later from the chase car, ascent rate was unexpectedly low, so there was a chance for the payload to land in the sea, which was unclear until the burst, because ascent rate fluctuated between 3.5 and 6.5 m/s quite a few times
[18:46] <x-f> then there was a competition between the chase cars and running around the fields looking for the payload
[18:46] <jcoxon> hehe]
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[18:46] <jcoxon> excellent
[18:46] <arko> wow
[18:46] <arko> crazy
[18:46] <jcoxon> pleased it went well
[18:46] <arko> totally taking that idea and livestreaming my hab in march
[18:47] <x-f> yeah, Brian's (OZ1SKY) tracker that he built in two weeks worked very good
[18:47] <arko> ok
[18:47] <arko> thats awesome
[18:48] <arko> so i've got a problem and i've thought of several solutions, but i want to see what people think here
[18:49] <arko> the vacuum chamber im building needs to have wires exit it
[18:49] <arko> can anyone here think of a low-cost solution?
[18:49] <arko> i need to run at least 10 data wires
[18:49] <arko> and 1 sma
[18:49] <arko> i dont want to give any of my solutions so that I don't effect your train of thought ;)
[18:51] <nigelvh> Generally our chambers have ports with bulkheads in them that you put passthrough connectors in and seal them.
[18:51] <arko> right
[18:51] <arko> but those cost assloads
[18:52] <arko> http://accuglassproducts.com/home.php?cat=300
[18:52] <arko> like these guys
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[18:52] <SpeedEvil> arko: reduce the number of wires.
[18:52] <SpeedEvil> serialisation is good
[18:52] <jcoxon> wireless?
[18:52] <arko> well, the sma needs to go through
[18:52] <SpeedEvil> or that
[18:53] <arko> otherwise i have a few watts bouncing around a small chamber
[18:53] <arko> the reflection back into the antenna could harm the equiptment
[18:53] <arko> i could use a dummy
[18:53] <SpeedEvil> dummy load?
[18:53] <nigelvh> Dummy load
[18:53] <arko> but that is a heat source :)
[18:53] <arko> it's a thermal vac test
[18:53] <SpeedEvil> ah
[18:53] <nigelvh> Is this for your hab?
[18:54] <arko> dummy will hurt the point of the test
[18:54] <arko> yes it is
[18:54] <nigelvh> You're going to be generating the heat in near vacuum anyway.
[18:54] <arko> well, the electronics naturally should
[18:54] <nigelvh> Just stick the dummy load at the end of a cable a small distance away.
[18:55] <arko> ok, so i'll spill the beans on the two ideas
[18:55] <arko> idea one
[18:55] <arko> drill a hole, put a metal tube in and weld it on
[18:55] <arko> then run wires
[18:55] <arko> fill the tube with epoxy
[18:56] <arko> let it dry
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[18:57] <arko> now my fear is that it would leak throught he wires
[18:57] <Hiena> You will need lot of epoxy, and it will cracks in the vac.
[18:57] <arko> even low temp epoxy?
[18:57] <arko> not regular epoxy
[18:57] <Hiena> Yup, due it will contain small air bubbles.
[18:57] <SpeedEvil> or use a valve base
[18:58] <arko> the other one was to cut a hole, seal/glue a glass window
[18:58] <SpeedEvil> glass is wetted by indium
[18:58] <arko> and do optical comm
[18:58] <SpeedEvil> also
[18:58] <arko> laser/photosensor
[18:58] <SpeedEvil> what is vacuum
[18:58] <SpeedEvil> a torr, or a microtorr.
[18:58] <arko> 1000bar
[18:58] <arko> err
[18:58] <arko> 1000Pa
[18:58] <arko> sorry
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[19:00] <arko> 1% atm
[19:00] <arko> so not super vacuum
[19:00] <arko> but still very vacuum
[19:00] <Hiena> arko: Optical comm is good idea. Also you could machine terminals and epoxy them to a socket which could be bolted to the camber porthole.
[19:00] <arko> :)
[19:01] <arko> downside is the sma cable still needs to run out of it
[19:02] <arko> the other problem with dummy is that i want to measure the power output
[19:02] <arko> so i was gonna run the rf cable to a power meter which has a dummy
[19:02] <arko> :/ damn
[19:03] <Hiena> Look for the labirinth seals, and the design of the impedance matched terminal. You should make a simple sealed terminal, which act as a coaxial cable.
[19:03] <nigelvh> Put the meter inside and look at the meter through the porthole.
[19:03] <arko> chamber is too small
[19:03] <nigelvh> Solution 1: Get bigger chamber with wiring connections built in.
[19:04] <arko> too expensive :P
[19:04] <arko> im trying to do all this for under $400
[19:04] <arko> i got the pressure cooker for $160
[19:04] <arko> i want to make it easy for others to replicate so they can test their habs
[19:05] <nigelvh> Generally vacuum testing isn't a big deal. The important one is testing at cold temps
[19:05] <arko> true
[19:05] <nigelvh> Only thing vacuum testing gets you is a way to check a barometer.
[19:05] <nigelvh> Pretty much everything else doesn't care.
[19:05] <arko> well, without convection some parts can overheat
[19:06] <nigelvh> Unless you're running high power 1W or greater, I wouldn't worry about it.
[19:06] <arko> im 2W
[19:06] <arko> which is crazy
[19:06] <arko> yes i know
[19:06] <nigelvh> The put a heatsink or some copper foil on and call it a day
[19:06] <Hiena> Yup.
[19:07] <Hiena> Bolt the dummy to the chamber and it will dissipate the heat.
[19:07] <arko> ohh
[19:07] <nigelvh> I don't disagree that a vacuum chamber is cool to have to begin with, but you don't need it.
[19:07] <arko> thats a good idea
[19:07] <arko> i know
[19:07] <arko> but i'd be nice to do some studies on this
[19:08] <arko> perhaps it may not be needed now, but maybe in the future when we build our own sensors or other equptiment it might
[19:08] <meatmanek> yeah I really really hope it missed the highway
[19:08] <meatmanek> called the CHP and they didn't seem to know anything about it yet, so it probably hasn't caused any accidents
[19:08] Action: arko high fives meatmanek
[19:09] <Hiena> Like: How to blow up airtight things, and why shouldn't use closed cell foam as insulator 101.
[19:09] <arko> right
[19:09] <arko> maybe batteries would puff up
[19:09] <arko> this must be the inner reliability engineer that has been beatin into me at work
[19:10] <arko> we test the living shit out of everything
[19:10] <arko> one of the reasons why we have a great track record ;)
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[19:10] <arko> i like to simulate all the conditions I can
[19:10] <arko> it may not be needed now, but certainly can help in the future as the projects progress and get more complicated
[19:11] <Hiena> Once i made a nice and shiny pressure sensor from condom. Put it on the vac. chamber. Well, since i know the DUREX isn't spaceworthy.
[19:11] <nigelvh> I've tested lipos in a vacuum chamber and they don't.
[19:11] <arko> Hiena: LOL
[19:12] <arko> yeah i wouldn't trust condoms to hold up at 1000Pa
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[19:14] <arko> eroomde: http://www.youtube.com/watch?v=nUV6oqCFrFU&feature=youtu.be
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[19:22] <arko> damn it
[19:22] <arko> toor seal costs as much as the connector
[19:25] <fsphil> someone flying?
[19:26] <arko> meatmanek was
[19:27] <meatmanek> 1000 ft/min up, 1000 ft/min down
[19:27] <fsphil> ah
[19:29] <fsphil> 5m/s then :)
[19:30] <fsphil> what where you flying?
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[19:35] <meatmanek> not sure, johnboiles handled the balloon stuff
[19:37] <Randomskk> hey guyz telnet horizons.jpl.nasa.gov 6775
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[19:39] <arko> then type "mars"
[19:39] <arko> then type "-76"
[19:39] <arko> :P
[19:40] <arko> ======================================================================
[19:40] <arko> | Jet Propulsion Laboratory |
[19:40] <arko> | |
[19:40] <arko> | * * * W A R N I N G * * * |
[19:40] <arko> | |
[19:40] <arko> | Property of the |
[19:40] <arko> | UNITED STATES GOVERNMENT |
[19:40] <arko> | |
[19:40] <arko> | This computer is funded by the United States Government and |
[19:40] <arko> | operated by the California Institute of Technology in support of |
[19:40] <arko> | ongoing U.S. Government programs and activities. If you are not |
[19:40] <arko> | authorized to access this system, disconnect now. Users of this |
[19:40] <arko> | system have no expectation of privacy. By continuing, you consent |
[19:40] <arko> | to your keystrokes and data content being monitored. |
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[19:45] <arko> wow
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[19:45] <arko> wait
[19:45] <arko> can everyone see this?
[19:45] <fsphil> I'm not sure I should -- they might try to extradite me
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[19:46] <arko> if you type mars does it give you names/id's?
[19:46] <fsphil> yea
[19:46] <arko> ok
[19:46] <arko> was wondering if it's different for people inside/outside the network
[19:47] <fsphil> telnet .. man it's been a while :)
[19:48] <arko> seriously
[19:48] <arko> wow
[19:48] <arko> you can request ftp of files
[19:48] <arko> thats crazy
[19:49] <fsphil> I wonder if that's automated or is someone keeping it updated
[19:49] <Randomskk> it's super cool
[19:49] <mfa298> careful if you start looking for games on there.
[19:49] <Randomskk> I just got it to email me the times and RA and other details of all the ISS passes in the next few days
[19:49] <Randomskk> grenwich is observatory id 000
[19:50] <arko> :)
[19:50] <Randomskk> greenwich*
[19:50] <WillDuckworth> don't be looking for signs of UFOs otherwise you know what'll happen....
[19:50] <fsphil> mfa298: or evidence of UFO coverups :)
[19:50] <WillDuckworth> lol
[19:50] <arko> X-Files
[19:50] <fsphil> you get a free trip to the US
[19:51] <arko> lol
[19:51] <arko> hah!
[19:51] <arko> i just realized i know the webmaster
[19:51] <arko> wtf
[19:51] <arko> small world
[19:51] <mfa298> fsphil: I was particularly thinking to stay away from "Thermo-Nuclear War" - assuming my movie trivia is correct
[19:51] <fsphil> telnet master?
[19:51] <fsphil> that's the one mfa298
[19:52] <fsphil> a curious game, the only winning move is not to play :)
[19:52] <arko> well the guys who run the server
[19:52] <arko> i really shouldn't say more
[19:52] <arko> <-- doesn't want to break export laws
[19:53] <fsphil> I'm sure the jails there are nice
[19:53] <nigelvh> Don't want to go to federal pound you in the ass prison?
[19:53] <arko> cockmeat sandwich on the menu
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[19:54] <fsphil> they'll give you a warm welcome
[19:54] <arko> >_<
[19:54] <fsphil> so anyway
[19:55] <OZ1SKY_Brian> hi
[19:55] <fsphil> hiya OZ1SKY_Brian
[19:55] <fsphil> good work today
[19:55] <OZ1SKY_Brian> thanks, now i also know what fun you guys are having :-)
[19:55] <fsphil> haha
[19:55] <fsphil> The chases are always exciting
[19:56] <OZ1SKY_Brian> and stressfull i found out :-)
[19:57] <fsphil> it was a nice easy recovery in the end
[19:57] <OZ1SKY_Brian> giving driver directions, and working the car and remote rx at the same time :-)
[19:57] <fsphil> the prediction was a good bit further west than the final landing spot
[19:57] <fsphil> yep :)
[19:57] <OZ1SKY_Brian> yes something happed when it got up to speed
[19:58] <fsphil> I was lucky that once I setup my home station it retunes it self
[19:58] <fsphil> so I just tune it, and let it work away
[19:58] <OZ1SKY_Brian> i was very worryed when i saw the very low accent rate and splashdown calculation
[19:58] <OZ1SKY_Brian> just watched the launch on local news
[19:59] <fsphil> ah sweet!
[19:59] <jcoxon> congrasts OZ1SKY_Brian
[20:00] <OZ1SKY_Brian> thank you james
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[20:05] <meatmanek> hahahaha yay
[20:05] <meatmanek> the CHP found our balloon
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[20:07] <jarod> http://x264.nl/dump/52-2205/137.8mhz-noaa.jpg :D
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[20:07] <fsphil> California Highway Patrol?
[20:09] <meatmanek> yeah
[20:09] <nigelvh> On the road? Or near it?
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[20:16] <jarod> probably on their roof
[20:17] <Gadget-Mac> jarod: nice
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[20:22] Nick change: [1]Boggle -> Boggle
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[20:25] <griffonbot> Received email: Geoff Mather "[UKHAS] Re: Hyowee 800g floater?"
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[20:29] <OZ1SKY_Brian> https://www.facebook.com/photo.php?fbid=535859789772600&set=oa.236080693190370&type=1&theater
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[20:33] <x-f> i like those layers of atmosphere there
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[20:36] <mattbrejza> ive wondered whether those bands of blue are layers of atmosphere or just image compression/capture/storage related
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[20:39] <fsphil> oh silly facebook ... "View Larger" shows me a smaller version
[20:40] <fsphil> that is a nice pic
[20:42] <OZ1SKY_Brian> did anyone get it in the uk, i did see it was readable in the nederlands?
[20:43] <mattbrejza> almost but not quite i think (ask navracwork )
[20:44] <OZ1SKY_Brian> ok
[20:45] <mattbrejza> according to habitat he didnt
[20:46] <OZ1SKY_Brian> ok, abit too far away
[20:47] <mattbrejza> given an extra km in altitude probably would have been enoigh
[20:49] <OZ1SKY_Brian> got 15min too late to see it on national tv :-(
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[20:50] <mattbrejza> repeated at 10pm? online? catchup?
[20:50] <fsphil> I missed my own launch on local telly
[20:50] <fsphil> caught it later on iplayer
[20:51] <mattbrejza> why does java store strings in char (16bit) arrays...
[20:51] <mattbrejza> such a waste of memory
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[20:52] <fsphil> utf-16?
[20:52] <fsphil> windows does that a lot too
[20:53] <mattbrejza> yea but you would have thought the android library might br a bit more careful
[20:53] <mattbrejza> i suppse UTF-8 is variable length which would cause issues
[20:54] <griffonbot> Received email: Trevor Cousins "Re: [UKHAS] Re: Hyowee 800g floater?"
[20:55] <Upu> haha epic :
[20:55] <Upu> The second gps kept reporting a position along the flight path but when the balloon was near the high point, in Brande. I couldn't figure that out until I got the payload back and the gps was missing - it fell off, fell 25 km or so and landed in a field. It is still working an peeps its position if I ask!
[20:55] <OZ1SKY_Brian> hehe yeah
[20:55] <Upu> evening Brian
[20:55] <OZ1SKY_Brian> Hi Anthony
[20:56] <fsphil> hah
[20:56] <OZ1SKY_Brian> the small 5elem was of good use, before i got dl-fldigi working again
[20:57] <Upu> Super days work there
[20:57] <OZ1SKY_Brian> thanks, was alot of fun
[20:57] <Upu> Hope they realise most of it was your work
[20:57] <OZ1SKY_Brian> tracker box was abit imploded
[20:58] <Upu> pressure ?
[20:58] <OZ1SKY_Brian> looks like it, since antenna is ok
[20:58] <OZ1SKY_Brian> so dont think it happend on landing
[20:58] <Upu> did the GoPro steam up ?
[20:59] <mattbrejza> was that photo on fb from the gopro?
[20:59] <OZ1SKY_Brian> Upu i dont realy know, ive only seen that picture, i drove home after pickup
[20:59] <Upu> got your bits back I guess ?
[20:59] <OZ1SKY_Brian> was abit long to drive past the school again
[20:59] <OZ1SKY_Brian> yes
[20:59] <Upu> ok
[21:00] <fsphil> it was a bit frantic in the school
[21:00] <OZ1SKY_Brian> they got the cams and i got the tracker
[21:00] <Upu> great job Brian seriously good effort on your part
[21:00] <OZ1SKY_Brian> fsphil yes :-)
[21:00] <OZ1SKY_Brian> Upu not the last time im doing this, if the chance get there again :-)
[21:01] <Upu> you'll have to come to the UK and do it
[21:01] <Upu> or go bankrupt
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[21:01] <OZ1SKY_Brian> and we did see it come down, some 100meters up and down
[21:01] <Upu> radio tracking... :)
[21:02] <OZ1SKY_Brian> Upu i have to get to the next ukhas convention :-)
[21:02] <fsphil> too much fog here or I think we would have seen ours
[21:02] <fsphil> ooh definitely
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[21:03] <OZ1SKY_Brian> burst https://www.facebook.com/photo.php?fbid=535878816437364&set=oa.236080693190370&type=1&theater
[21:03] <OZ1SKY_Brian> more pictures comming now i see
[21:03] <OZ1SKY_Brian> OHH YES!! my tracker https://www.facebook.com/photo.php?fbid=535879156437330&set=oa.236080693190370&type=1&theater
[21:03] <OZ1SKY_Brian> LOL
[21:04] <OZ1SKY_Brian> looks like a line broke
[21:04] <mattbrejza> well no fogging
[21:06] <Upu> you want to get a full size version of that print it out and stick it on the wall Brian
[21:06] <Upu> that is awesome
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[21:06] Nick change: [1]Boggle -> Boggle
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[21:07] <Upu> some lovely images
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[21:08] <eroomde> Io, Jupiter, Europa, Ganymede from just outside the office just now http://i.imgur.com/F0Rce.jpg
[21:09] <Upu> nice got a picture of the scope ?
[21:09] <arko> wow nice
[21:09] <arko> what telescope?
[21:09] <eroomde> Meade LX90
[21:10] <arko> no way!
[21:10] <arko> diameter?
[21:10] <eroomde> 8"
[21:11] <arko> nice!
[21:11] <arko> i have the 10" EMC
[21:11] <arko> <3 best telescope
[21:12] <number10> anyone have a recommendation for good A level physics book (need for present)
[21:12] <jarod> http://i.imgur.com/F0Rce.jpg <-- thats jupiter?
[21:12] <arko> err
[21:12] <arko> good one
[21:12] <eroomde> jarod: yep the big one is jupiter
[21:12] <eroomde> the other 3 are some of its moons
[21:12] <jarod> sweet pic
[21:13] <jarod> eroomde got full size pic? :)
[21:13] <arko> eroomde: a picture of it in my room from a year ago http://i.imgur.com/d6bQY.jpg
[21:13] <eroomde> jarod: yes but the rest of it is entirely black
[21:13] <eroomde> 2.9MB of black
[21:13] <arko> what are you using to track?
[21:13] <eroomde> number10: maybe not a-level syllabus but the Feynman Lectures are a wonderful thing
[21:13] <jarod> eroomde ah so this is max zoom for jupiter, cool
[21:13] <eroomde> arko: nothing, that was just manual point and short exposure
[21:13] <arko> nice!
[21:14] <number10> thanks eroomde I'll take a look
[21:14] <arko> is it your scope?
[21:14] <eroomde> nope, James' (my boss)
[21:14] <arko> ah cool
[21:14] <eroomde> lives at the office
[21:14] <arko> yeah they are expensive :(
[21:14] <arko> my friend gave me the one i have
[21:14] <eroomde> it's a moderatrly clear night and we've been having a good day photographically so thought we'd finish it off
[21:14] <fsphil> jupiter might tempt me to drag out my scope
[21:14] <fsphil> it really is in a fantastic position atm
[21:14] <OZ1SKY_Brian> 2:55 in http://www.dr.dk/tv/se/vores-vejr/vores-vejr-87#!/04:00
[21:14] <arko> :) nice
[21:15] <eroomde> jarod: I took this picture earlierhttp://i.imgur.com/5Ei1Z.jpg
[21:15] <arko> oh
[21:15] <eroomde> http://i.imgur.com/5Ei1Z.jpg formatting fail sorry
[21:15] <arko> was wondering
[21:15] <Upu> eroomde is rightly chuffed with that
[21:15] <jarod> whats that?
[21:15] <Upu> fire 2013 style
[21:15] <arko> when counting those mach diamonds, when do you stop count?
[21:15] <eroomde> it's an experiment rocket engine we've built
[21:16] <jarod> :O
[21:16] <eroomde> one of our bits of work at the moment is to test propellents that you could make on the surface of mars
[21:16] <arko> Thanks for the new wallpaper ;)
[21:16] <eroomde> for a mars sample return mission
[21:16] <eroomde> and this is the engine we've made to try out the various propellent combinations. we're basically checking that the actual performance matches our mathematical models
[21:17] <eroomde> which we are currently to within 99.&% which is a very nice number
[21:17] <eroomde> woo science
[21:17] <arko> O_O
[21:17] <arko> thats crazy
[21:17] <eroomde> 99.7%*
[21:17] <arko> you guys have a contract to jpl or perparing for a pitch?
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[21:18] <eroomde> this is ESA
[21:18] <eroomde> but it just so happens i'll be at JPL in about 4 weeks
[21:18] <eroomde> not that you'd know anything about that mr arko
[21:18] <arko> :P
[21:18] <fsphil> conspiricy!
[21:19] <arko> SHHHH
[21:19] <fsphil> oh yea
[21:19] <arko> be quiet fsphil
[21:19] <fsphil> (sorry)
[21:19] <arko> there's ice cream in the lobby
[21:19] <arko> as promised
[21:19] <fsphil> (excellent)
[21:19] <arko> ermoode: Wednesdays and Thursdays are going to be impossible for me
[21:19] <arko> those are the most busy days at school
[21:20] <arko> err i mean
[21:20] <eroomde> ok, will aim to avoid
[21:20] <eroomde> will shoot for monday or tuesday
[21:20] <arko> Tuesdays and Thursdays
[21:20] <eroomde> oh ok
[21:20] <arko> sorry
[21:20] <eroomde> will shoot for wednesday
[21:20] <arko> cool
[21:20] <eroomde> will email tom this weekend
[21:20] <arko> tuesday night you should come to our hackerspace though
[21:20] <arko> cool cool
[21:21] <arko> cant wait
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[21:21] <fsphil> hurry up and invent that time machine then
[21:22] <eroomde> i will def come to the hacker space
[21:22] <arko> fsphil: almost done with that actually
[21:22] <eroomde> will ask henry about when he can fly from sf to LA in the VariEze (i am excited about that...)
[21:23] <arko> hopefully this weekend we will install the flux and be done
[21:23] <eroomde> might do monday so i can drop into the newspace folks in mojave on a weekeday
[21:23] <eroomde> then arrive in LA monday eve?
[21:23] <arko> cool cool
[21:25] <fsphil> 73 days to more GoT
[21:25] <Upu> oh woo :)
[21:25] <arko> GoT?
[21:26] <fsphil> game of thrones
[21:26] <arko> haha
[21:26] <arko> that show with the naked ladies
[21:26] <arko> i like that one
[21:26] <fsphil> war/naked people/war/naked people/fighting/naked people
[21:26] <Upu> naked hot chicks I think you'll find
[21:27] <fsphil> yet whenever anyone else walked into the room while I was watching it, it was always on the naked people bit
[21:27] <arko> my friend and I were talking about making a youtube channel where all we do is just cut scenes of the naked ladies and just go about rating and talking about them
[21:27] <Upu> haha
[21:27] <Upu> lol
[21:27] <fsphil> MGOT:3000
[21:27] <arko> thats it, no plot critisim
[21:27] <arko> exactly!
[21:28] <fsphil> that would be great. and probably an entire episodes worth for each series
[21:28] <eroomde> I HAVE TWEETED
[21:28] <eroomde> that's a first
[21:28] <fsphil> I'm scared
[21:29] <eroomde> but for what i thought was a direct message once about 2 years ago
[21:29] <eroomde> but wasn't
[21:29] <fsphil> two in one go
[21:29] <eroomde> oh you're a subscriber
[21:29] <nigelvh> *GASP*
[21:29] <fsphil> I know! I'd forgotten!
[21:29] <arko> am i following you?
[21:29] <eroomde> i have no idea
[21:29] <eroomde> i have steadfastly ignored twitter
[21:29] <arko> ha
[21:29] <eroomde> @eroomde
[21:29] <arko> nice
[21:30] <arko> twitter isn't terrible
[21:30] <arko> it's a nice way to keep up with mars people :P
[21:30] <fsphil> the twitter client for android wants to be able to read all my contacts, accounts and be able to change passwords
[21:30] <nigelvh> I just have twitter text me the messages from who I subscribe to. I never log in or tweet anything.
[21:31] <fsphil> I always mean to do some tweeting during a hab flight, but never find the time
[21:31] <fsphil> hopefully someone else can launch here, so I can take a step back and watch the panic from afar :)
[21:31] <arko> i like the livestream idea
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[21:32] <fsphil> yea
[21:32] <arko> i just realized i never see my wallpaper >_<
[21:33] <eroomde> kapow
[21:33] <eroomde> ta arko
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[21:33] <arko> but every now and then i will notice the rocket
[21:33] <fsphil> ooh I must re-tweet you eroomde
[21:33] <eroomde> and so it begins
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[21:34] <fsphil> there we go
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[21:34] <fsphil> pretty much everyone following me is in this channel, so that was pretty pointless tbh :)
[21:34] <arko> eroomde: recommend any good sealed connectors?
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[21:35] <arko> hahahahaha
[21:35] <arko> eroomde already has a spammer reply
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[21:36] <eroomde> arko: how sealed?
[21:36] <eroomde> the lemo ones are ip68 when connected
[21:36] <eroomde> they have a wonderful action, and i small and light
[21:37] <eroomde> the downside is that they are machined from solid money
[21:37] <arko> hmm
[21:37] <arko> yeah
[21:37] <arko> i noticed
[21:37] <arko> $100+
[21:37] <arko> thats a quite right there
[21:37] <eroomde> what do you need?
[21:37] <eroomde> how many pins?
[21:37] <arko> quote*
[21:37] <arko> 8+ pins
[21:37] <arko> i have a metal hole
[21:37] <arko> i need to put it through and have it vac sealed
[21:37] <eroomde> the set of 8+ includes 5676849857694
[21:37] <arko> to about 1-5% atm
[21:38] <eroomde> well, the milsepc circulars I use are cheaper and come with gaskets that are rated to ip68 too
[21:38] <eroomde> sunno if that will hold in those conditions
[21:38] <eroomde> would have thought so
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[21:40] <fsphil> "Hugin" is analysing images for a panorama. can tell it's working hard because the laptop smells like its burning
[21:40] <eroomde> http://uk.farnell.com/amphenol/62gb-12e16-08sn/socket-16-08-panel-mount-8way/dp/3911421
[21:41] <eroomde> sorry i am being crap
[21:41] <eroomde> they *don't* come with the gaskets
[21:41] <eroomde> you have to buy them separately
[21:41] <eroomde> but they're cheap
[21:41] <nigelvh> Chewing gum
[21:41] <eroomde> or that
[21:42] <arko> hmm
[21:42] <arko> yeah
[21:42] <arko> are the pins sealed?
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[21:50] <OZ1SKY_Brian> its been a long day, will sign off, goodnight everyone
[21:50] <fsphil> nite brian!
[21:50] <Upu> night
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[21:50] <eroomde> arko: it's rated ip68 if the connection is made
[21:51] <eroomde> but i'm not sure if it is without the conenction made
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[21:51] <arko> hmm
[21:51] <eroomde> but you can get caps for them which will seal them off if you don't have the opposing connector
[21:51] <eroomde> you often see those caps dangling off little chains on mil hardware
[21:52] <arko> yeah
[21:52] <Randomskk> I'd be a bit surprised if they were rated for continuous vacuum
[21:52] <eroomde> yes indeed
[21:53] <eroomde> not really designed for it
[21:53] <arko> yeah
[21:53] <eroomde> i don;t know about actual vacuum hermietc seals
[21:53] <arko> it's like water proofish
[21:53] <eroomde> there's probably a whole world of stuff out there
[21:53] <eroomde> but never had cause to look into it before
[21:53] <arko> yeah, they cost $100+
[21:53] <arko> its cool
[21:53] <arko> im gonna try apex electronics to see if can get something cheap
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[21:57] <griffonbot> Received email: Anthony Stirk "[UKHAS] Possible Pico Launch Sunday 13/01/13"
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[21:59] <KT5TK_QRL> PecanPico2 PCBs have arrived: http://tkrahn.dyndns.org/gallery2/main.php?g2_itemId=9180
[21:59] <Upu> now with even more small :)
[22:00] <KT5TK_QRL> Same size, just more parts :)
[22:00] <Upu> TPS61200 ?
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[22:00] <Upu> the 3.3v one
[22:00] <KT5TK_QRL> I use the step ups
[22:00] <Upu> yep that looks like the one I use
[22:01] <Upu> http://imgur.com/a/fGvss
[22:02] <Upu> see on those small step up
[22:02] <Upu> looks good though don't fancy soldering yours though :)
[22:02] <nigelvh> Fancy looking PCBs there KT5TK
[22:03] <KT5TK_QRL> Trying to send a link to the docu. Just have to fight against permissions....
[22:04] <KT5TK_QRL> give me some minutes
[22:06] <Upu> I forgot to put listeners would be appreciated in that e-mail :)
[22:13] <KT5TK_QRL> Here we go: http://tkrahn.dyndns.org/download/PecanPico2/PecanPico2Sch.pdf
[22:13] <nigelvh> Moved to the SI4463 then?
[22:14] <KT5TK_QRL> http://tkrahn.dyndns.org/download/PecanPico2/PecanPico2Layout.pdf
[22:14] <KT5TK_QRL> Trying to.
[22:14] <KT5TK_QRL> Need to write the radio driver still
[22:14] <nigelvh> What was the advantage here again?
[22:14] <KT5TK_QRL> Actually Si4464
[22:15] <Upu> the SI4463 is the chip I'm planning on using
[22:15] <Upu> 4464 does RX as well
[22:15] <KT5TK_QRL> It's a transceiver
[22:15] <nigelvh> Ah, can recieve.
[22:15] <KT5TK_QRL> it has 100 mW out
[22:15] <Upu> simpler layout than the ADF7012
[22:15] <KT5TK_QRL> and it can do multiple bands without changing a coil
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[22:16] <Upu> thats what I'm planning on using
[22:16] <KT5TK_QRL> The vco of the rf chip runs at >3 GHz
[22:16] <nigelvh> Fancy
[22:16] <Upu> frequency agile on APRS
[22:17] <Upu> transatlantic anyone ? :)
[22:17] <Upu> btw
[22:17] <arko> duuude
[22:17] <Upu> that module will run at 1.8v
[22:17] <arko> send it
[22:17] <Upu> and double your battery life
[22:17] <Upu> however you can't get the 4Mhz crystal in that foot print
[22:17] <Upu> its in planning arko :)
[22:17] <Upu> many plans.. :)
[22:18] <arko> nice
[22:18] <Upu> you can get GPS @ 1.8V too
[22:18] <Upu> throw some power saving code on there and you will be going twice as far per cell
[22:19] <Upu> Got a 1.8V µC board driving a 5v HX1 doing APRS at the moment
[22:19] <Upu> via a transistor
[22:26] <arko> ew
[22:26] <arko> i just got my cold polystyrene boxes
[22:26] <arko> they have yellow dots
[22:26] <arko> freakin looks diseased
[22:26] <KT5TK_QRL> For clarification: Si4463 and Si4464 are both transceivers. They just use different frequency ranges. Both should work for the 144 and 433 MHz Ham bands, but for the Si4464 they are more in the center of the band ranges. At the Si4463 the ham bands are just at the edge of the frequency ranges.
[22:27] <KT5TK_QRL> measles?
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[22:29] <arko> probably
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[22:36] <arko> good thing it's closed cell
[22:36] <arko> i was scared because i forgot to check
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[23:07] <hyte> does anyone know how to re generate lion batteries. I've got one which is down to 1.7v?
[23:08] <Dan-K2VOL> check batteryuniversity.com
[23:08] <arko> feed it zebra?
[23:08] <arko> wow
[23:08] <arko> nice link
[23:09] <arko> turns out i have it bookmarked, but forgot about it
[23:13] <hyte> ok pumping 9v from a 9v battery and it seems to be sucking it in at 4.2v
[23:13] <Dan-K2VOL> do not screw with lithium batteries without a real charger
[23:13] <Dan-K2VOL> unless you're in a fireproof area
[23:14] <arko> pumping?
[23:14] <arko> hyte: there are easier ways to start a fire
[23:14] <hyte> glass table
[23:14] <arko> >_<
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[23:15] <hyte> just want to ge the the voltage so a proper charger will take over, sand at the ready
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[23:20] <nigelvh> How long has it been sitting at 1.7?
[23:21] <arko> you are more the likely damaging the battery
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[23:21] <nigelvh> The battery is more than likely already damaged.
[23:21] <arko> yeah
[23:22] <nigelvh> You really need to cut off at 2.5V at absolute minimum. Most manufacturers recommend cutting off at 2.7-2.8V
[23:23] <hyte> its a cell from a dead dell battery pack, took it out of the gf's laptop about 2 years ago so has been draining ever since
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[23:23] <nigelvh> Yeah, the cell's probably garbage. That low of a voltage, plus the age it is anyway.
[23:24] <hyte> another 2 are 2.3v so maybe better
[23:24] <hyte> the 1.7 one is now pretty steady at 3.6v
[23:24] <nigelvh> Generally when a laptop pack goes bad, I've found it's the last set that are the real dead ones.
[23:25] <nigelvh> Keep in mind that these batteries are old, and possibly damaged, so be careful charging them, and they WILL NOT provide their rated capacity.
[23:25] <hyte> I'm actually trying to use it to power an hd camcorder which seems to overcharge the batteries by default
[23:26] <nigelvh> To what voltage?
[23:26] <hyte> going to check capacity separtely, if it doesn't work hobby king it is
[23:26] <hyte> the camcorder takes 3.7v 1Ah
[23:27] <nigelvh> Do you mean the camcorder "overdischarges" rather than "overcharge"s?
[23:28] <hyte> looks like overcharges, the cell inside it was buldging when i got it
[23:29] <nigelvh> That is certainly a bad thing, but not necessarily indicative of the camcorder charging improperly. Can also just be a bad cell.
[23:30] <hyte> https://forums.computers.toshiba-europe.com/forums/thread.jspa?threadID=64843
[23:30] <hyte> lots of bad cells
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[23:48] <hyte> well, the cell has enough charge to power the camcorder but the camcorder doesn't want to charge it, think i need to do something with the middle pin
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[23:54] <radim_OM2AMR> late evening to all, is it possible to send the test data to spacenear.us tracker now ?
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[00:00] --- Sat Jan 12 2013