highaltitude.log.20080805

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[00:02] <fergusnoble> edmoore: you still up?
[00:10] <edmoore> yes but about to not be - only stayed up to wait for washing
[00:10] <edmoore> now in drier
[00:11] <edmoore> shout though
[00:14] <fergusnoble> wanted t ask what ytou were suggesting the other day for the peak detection
[00:14] <fergusnoble> but maybe now isnt the time
[00:14] <fergusnoble> if your about to head
[00:17] <edmoore> machine learning should be broached before i've turned the sign around to 'closed' on the shop floor of my brain
[00:18] <fergusnoble> ok, cool bean
[00:18] <fergusnoble> s
[00:18] <fergusnoble> ill maybe distract you from work tomorrow then :)
[00:19] <akawaka> anyone got truetty and wants to test this app for me?
[00:20] <fergusnoble> i have a different rtty decoder
[00:20] <fergusnoble> does it have to be trutty?
[00:21] <akawaka> i think so
[00:21] <akawaka> it uses some special communication with that app
[00:21] <fergusnoble> ah ok
[00:21] <akawaka> can someone give me jcoxons email addy?
[00:21] <fergusnoble> what does it do?
[00:21] <akawaka> logs the output from truetty
[00:21] <fergusnoble> oh right
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[00:30] <Laurenceb> http://news.bbc.co.uk/1/hi/magazine/7540427.stm
[00:37] <akawaka> tell jcoxon to check his gmail when/if he gets back
[00:44] <fergusnoble> akawaka: he has an exam tomorrow
[00:44] <fergusnoble> i think he is sleeping
[00:49] <SpeedEvil> http://www.shapeways.com/about/ Now - what can I uses this for (3D printer)
[00:49] <akawaka> bloody students!
[00:50] <SpeedEvil> I'd say that sort of person should be shot into space, but that's too good for them.
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[02:10] <fergusnoble> yey, my auto-decode-o-tron is alive!!
[02:10] <fergusnoble> (mwah ha ha)
[02:11] <natrium42> what does it do?
[02:11] <fergusnoble> decodes rtty with no operator intervention
[02:11] <fergusnoble> even if there is evere drift
[02:11] <fergusnoble> *severe
[02:11] <natrium42> oh, awesome
[02:12] <natrium42> are you going to test it with jcoxon's launch?
[02:12] <fergusnoble> yeah hope to
[02:12] <fergusnoble> also its good to have an open source solution rather than trutty
[02:13] <fergusnoble> it just dumps the decode to stdout too so its a bit easier to combine it with other things
[02:13] <natrium42> cool
[02:13] <natrium42> so you listen to the audio directly?
[02:15] <fergusnoble> yeah
[02:15] <fergusnoble> to be fair, most of the code isnt mine
[02:16] <natrium42> does it run on linux?
[02:16] <fergusnoble> just added the "hands free" ness
[02:16] <fergusnoble> yeah
[02:16] <natrium42> yay
[02:16] <fergusnoble> need to find a good cross-platform way of doing the audio
[02:16] <natrium42> finally no need to use external tools, eh?
[02:16] <fergusnoble> at the moment its using OSS :(
[02:17] <fergusnoble> yeah
[02:17] <natrium42> have you looked at SDL?
[02:17] <fergusnoble> only for gfx and that was a long long time ago
[02:17] <fergusnoble> ill check it out
[02:17] <natrium42> hmm, actually, it might not have sound input -- only output
[02:18] <fergusnoble> ive written a script that should extract well formed telem strings and add them as waypoints in gpsdrive
[02:18] <fergusnoble> and ive got gpsdrive setup with a local store of the uk openstreetmap database
[02:18] <natrium42> wow, that's neat
[02:18] <fergusnoble> so fully open source tracking rig
[02:18] <natrium42> :D
[02:19] <natrium42> are you going to publish it?
[02:20] <fergusnoble> yeah, when its a bit more stable
[02:20] <natrium42> sure
[02:20] <natrium42> good good
[02:20] <fergusnoble> its still doing some wierd things and its eating too much cpu
[02:21] <fergusnoble> its doing a new fft and recalculating the filter coefficients as fast as it can at the moment
[02:21] <fergusnoble> only really needs to do it every few seconds
[02:21] <natrium42> ah
[02:21] <natrium42> you should port the rtty part to iphone :)
[02:21] <fergusnoble> yeah it could be done quite easily i think
[02:22] <fergusnoble> there is a good sdk to get acess to the audio input etc
[02:22] <natrium42> not sure what the advantage over laptop would be, but it could be a good publicity stunt
[02:22] <natrium42> and a nice hack to boot
[02:23] <fergusnoble> might make hackaday - they love people doing strange things with iphones
[02:23] <fergusnoble> :)
[02:23] <natrium42> hehe, why stop at hackaday? :P
[02:24] <natrium42> it has been going downhill lately
[02:24] <natrium42> few real hacks
[02:24] <fergusnoble> yeah, less good stuff but far more articles
[02:25] <fergusnoble> every time i open my email it says hakaday: 58 new posts
[02:25] <natrium42> "omg, here's how to hack firefox3 by changing a few parameters in about:config"
[02:26] <fergusnoble> yeah that was a slow day
[02:26] <fergusnoble> other posts included: look at what sparkfun have added to their catalogue and check out this piece of junk i just found
[02:29] <fergusnoble> btw i saw you added irc and twitter to the tracker
[02:29] <fergusnoble> its looking really pro
[02:29] <natrium42> thanks
[02:30] <natrium42> twitter and mibbit should offload my server a bit
[02:30] <natrium42> but i still worry that there could be problems with slow computers
[02:30] <natrium42> since there are 3 things now that send ajax requests
[02:31] <natrium42> do you think it's going to be OK?
[02:31] <fergusnoble> i dont know enough to judge
[02:32] <natrium42> ok, we'll see :)
[02:32] <fergusnoble> it took a few seconds to load on my machine
[02:32] <fergusnoble> 1.6ghz celeron
[02:32] <fergusnoble> feels pretty responsive
[02:33] <natrium42> good to hear
[02:33] <fergusnoble> most of that time was the mibbit box saying "connecting to server"
[02:34] <natrium42> maybe IRC would be better as Java
[02:34] <natrium42> but many people don't have java nowadays
[02:34] <natrium42> anyway, we should be fine :)
[02:34] <fergusnoble> na im sure it will be fine
[02:34] <natrium42> i am looking forward to the flight
[02:34] <fergusnoble> yeah me too
[02:34] <natrium42> i bet it's going to be some kind of first for
[02:35] <EI5GTB> bed tim for me guys, p.s i got my avr chip to cound in binary from the adc without noise :) night
[02:35] <natrium42> pictures
[02:35] <natrium42> balloon -> ground -> internet
[02:35] <natrium42> nite EI5GTB
[02:35] <fergusnoble> EI5GTB: good night
[02:35] <fergusnoble> natrium42: yeah im really looking forward to seeing how well the pictures work out
[02:36] <fergusnoble> i think if its not too wet then it has a good chance of working well
[02:36] <fergusnoble> it does seem that humidity kills the radio reception a bit though
[02:36] <natrium42> are you going to the launch btw?
[02:37] <natrium42> or following online?
[02:37] <fergusnoble> am going up
[02:37] <natrium42> haha
[02:38] <natrium42> in the balloon?
[02:38] <fergusnoble> no on the train :)
[02:38] <fergusnoble> (its north from me, and north IS up)
[02:38] <natrium42> ah XD
[02:39] <fergusnoble> ok the weather says its going to be cloudy all week and get sunny on saturday
[02:39] <fergusnoble> yey :)
[02:39] <natrium42> saturday would be more optimal for me :P
[02:40] <natrium42> since i have exam on monday
[02:40] <fergusnoble> just cheking the jetstream
[02:42] <fergusnoble> god damn wunderground
[02:42] <fergusnoble> you can never tell if its actually doing anything
[02:44] <fergusnoble> hmm, its not exactly ideal
[02:44] <fergusnoble> 60ish knots
[02:45] <fergusnoble> going out to sea
[02:51] <natrium42> and sunday?
[02:53] <fergusnoble> about the same
[02:53] <SpeedEvil> where do you get data?
[02:53] <fergusnoble> www.wunderground.com
[02:54] <fergusnoble> click on models and choose to add the 200mb map
[02:55] <SpeedEvil> That shows what - 11km?
[02:55] Action: SpeedEvil waits for it to load.
[02:56] <fergusnoble> something like that
[02:57] <SpeedEvil> unknown host
[02:57] <fergusnoble> its a dodgy website
[02:57] <fergusnoble> keep trying
[02:57] <SpeedEvil> hmm - I seem to have dodgy DNS to it
[02:57] <fergusnoble> and when you click to add the 200mb map it will look ike its not doing anything
[02:57] <fergusnoble> but the map will cme
[02:58] <natrium42> fergusnoble, what does the wyoming predictor shot?
[02:58] <natrium42> *show
[02:58] <SpeedEvil> And I get huge packetg loss.
[02:58] <fergusnoble> or sometimes clicking on a time in the bar will help
[02:58] <fergusnoble> natrium42: ill check, but give me a second, need to get google earth
[02:59] <natrium42> k
[02:59] <fergusnoble> natrium42: rob has made some code which basically does the same thing as the wyoming predictor only can be taylored a bit more
[02:59] <fergusnoble> would be good to add it into the tracker maybe
[03:00] <fergusnoble> like show a projected path in the google map
[03:00] <natrium42> oh, that would be awesome
[03:01] <fergusnoble> it can take your latest known position and start working from there as well
[03:01] <fergusnoble> which is good as it hopefully means the error will get a lot smaller as we go
[03:02] <fergusnoble> maybe it could even be tweaked to take into account the path taken on the way up and use that as more up to date wind data
[03:09] <SpeedEvil> Of course, you could always send up a weather balloon.
[03:13] <fergusnoble> hmm, wyoming only goes forward 3.5 days
[03:14] <fergusnoble> and says if we lanch in 3.5 days it will go in the sea :/
[03:16] <SpeedEvil> I've got a little R/C boat.
[03:18] <natrium42> haha
[03:18] <natrium42> is it satellite controlled? :P
[03:19] <SpeedEvil> It could be! :)
[03:29] <natrium42> actually, that wold be quite cool
[03:30] <fergusnoble> make the payload float and give it a little motor
[03:30] <fergusnoble> and rdder
[03:30] <fergusnoble> *rudder
[03:31] <fergusnoble> ok bedtime for me
[03:31] <fergusnoble> night
[03:31] <akawaka> i've thought of doing an advanced message in a bottle
[03:32] Nick change: fergusnoble -> fergus|away
[04:23] <akawaka> anyone looked into small satelite transmitters?
[05:04] <natrium42> akawaka, yeah
[05:05] <akawaka> how small and good are they?
[05:05] <akawaka> i don't need a high datarate
[05:05] <akawaka> but i need a small antenna
[05:06] <natrium42> i didn't get one, but they look interesting on paper
[05:06] <natrium42> i believe edmore got one
[05:06] <akawaka> got any links to products?
[05:06] <natrium42> yeah, one sec
[05:07] <natrium42> http://www.m2mconnectivity.com.au/servlet/Display?p=123
[05:08] <natrium42> pricing is here --> http://www.m2mconnectivity.com.au/servlet/Display?p=272
[05:08] <natrium42> each message is 72 bits
[05:09] <natrium42> the oem module itself was $100
[05:09] <natrium42> dunno what it costs now, though
[05:09] <akawaka> looks like what i am looking for
[05:09] <akawaka> but i want coverage in the pacific ocean:)
[05:10] <natrium42> then iridium is the way to go
[05:11] <natrium42> iridium phone costs about $1200
[05:11] <natrium42> and 500 min calling card costs $650
[05:12] <natrium42> not cheap, but you get data both ways
[05:12] <natrium42> anywhere on earth
[05:12] <akawaka> ouch
[05:12] <natrium42> even on the poles and in poland
[05:12] <natrium42> j/k about poland
[05:13] <natrium42> calling card also expires 1 year after activation
[05:13] <natrium42> i have to launch this winter or mine will be wasted :P
[05:15] <akawaka> yeah
[05:15] <akawaka> no coverage in poland
[05:15] <natrium42> XD
[05:15] <akawaka> hmmm, so satellite is too expensive
[05:16] <natrium42> lol
[05:16] <akawaka> hf radio is too difficult to build an antenna for
[05:16] <natrium42> launch is more expensive, though
[05:16] <akawaka> not more this project
[05:16] <akawaka> message in a bottle
[05:16] <natrium42> oh, sorry
[05:17] <natrium42> well, my planned transatlantic launch could become a message in a bottle
[05:17] <akawaka> maybe i could put a gsm module in there
[05:17] <akawaka> and hope it encounters a gps network at some point
[05:17] <akawaka> gsm
[05:18] <akawaka> that would be cheap at least
[05:19] <natrium42> yep, might be worth a shot
[05:23] <akawaka> get it into the southward california current and then it might get whisked across the pacific
[05:23] <akawaka> but i know next to nothing about the practicalities of ocean currents
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[05:42] <natrium42> omg, omg, omg
[05:42] Action: natrium42 giggles
[05:43] Action: natrium42 got a really good domain name
[05:46] <akawaka> ?
[05:48] <natrium42> the perfect domain name
[05:49] <natrium42> :D
[05:49] <natrium42> i can't believe it was still available
[05:49] <akawaka> www.natriumskinkybunnies.biz?
[05:49] <natrium42> lol
[05:49] <natrium42> YES, HOW DID YOU KNOW?!
[05:50] <akawaka> its obvious!
[05:54] <akawaka> hmmm, 105 bugs
[05:55] <akawaka> probably 200 total for the ps3 and i gotta fix about 150 of them by this time next week
[05:55] <natrium42> game going gold soon?
[05:57] <akawaka> yeah, end of the month
[06:07] <natrium42> sounds like busy time
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[06:17] <akawaka> 7 days a week 12 hours a day busy time
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[08:36] <natrium42> hey Laurenceb
[08:41] <gordonjcp> hello
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[08:44] <natrium42> hey gordon & edmoore
[08:44] <gordonjcp> hello natrium42
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[08:48] <edmoore> hi natrium42
[08:57] <natrium42> edmoore, i got teh best domain evar
[08:58] <natrium42> http://spacenear.us
[08:58] <natrium42> going to move all my balloon stuff there
[08:58] <natrium42> trackers are already moved
[09:02] <icez> nice logo
[09:02] <natrium42> thanks, i am quite happy with it :)
[09:02] <icez> reminds me of the local HAB group :P
[09:03] <natrium42> oh? do they have a site?
[09:03] <natrium42> i don't want it to be too close to anybody
[09:03] <icez> http://www.ansr.org
[09:03] <icez> well
[09:03] <icez> it's not really that close
[09:03] <icez> just reminded me of it a bit :P
[09:04] <natrium42> heh, it's pretty different :P
[09:04] <icez> i'd join them but they're a bit too advanced in their things for any use for someone like me :P
[09:04] Action: natrium42 slaps icez around a bit with a trout
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[09:04] <icez> D:?
[09:05] <natrium42> XD
[09:05] <icez> no slapping fellow canadians
[09:05] <icez> :P
[09:06] <natrium42> sowwy
[09:07] <icez> yep, really sexy domain
[09:07] <natrium42> i am amazed it was still free
[09:07] <natrium42> (also got .com, .net, .org)
[09:08] <icez> lol
[09:08] <natrium42> squatting domainz
[09:08] <icez> i have my still-have-to-do-something-with-it domain
[09:08] <natrium42> just one? :P
[09:08] <icez> yeah
[09:09] <icez> i'd put a blog, but i don't have much to blog about :P
[09:09] <natrium42> i only update my blog when i do something new
[09:09] <icez> something new...
[09:09] <icez> *thinks*
[09:09] <icez> nope
[09:10] <natrium42> or you can post your opinions!!1
[09:11] <icez> i could
[09:14] <icez> what do you do for a living natrium42 ?:P
[09:15] <natrium42> i am a student currently
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[09:16] <natrium42> what about you?
[09:16] <icez> student also
[09:16] <natrium42> what univ?
[09:16] <icez> ASU next spring
[09:17] <natrium42> didn't you say you were canadian? :P
[09:17] <natrium42> graduate or undergraduate and which program?
[09:17] <icez> well i'm from quebec originally :P
[09:17] <icez> born canadian lol
[09:17] <icez> undergraduate, computer science
[09:17] <natrium42> oh, same deal
[09:17] <icez> you?:P
[09:17] <icez> cool:P
[09:17] <natrium42> univ of waterloo
[09:20] <edmoore> natrium42: sorry was dragged away to work. site looks 'kin awesome
[09:20] <edmoore> does your domain host do subdomains?
[09:20] <natrium42> yeah
[09:20] <natrium42> i am planning to do some kind of myspace for HAB
[09:20] <natrium42> or at least tracking for now
[09:21] <natrium42> but i can def set you up with subdomain if you need it, as well
[09:22] <natrium42> it's a dedicated box, so i have full control
[09:22] <natrium42> paying about $170 per month for it
[09:23] <icez> got myself a good little shared hosting account 2 days ago :P
[09:24] <icez> cuz my ISP hates me :/
[09:25] <edmoore> wicked awesome - I'd like to get a dyndns on my new server
[09:25] <edmoore> whose bits arrived this morn
[09:25] <edmoore> so like ed.nearspace.us
[09:26] <natrium42> oh, sure thing
[09:26] <natrium42> just tell me the IP once you have it
[09:27] <edmoore> it'll be dynamic :)
[09:28] <natrium42> ah, hmm, there must be some kind of script to do it
[09:29] <natrium42> i use my own nameservers, so it should be technically possible
[09:33] <icez> i think dyndns.com could help with that
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[09:45] <natrium42> nsupdate can do it
[09:45] <natrium42> doesn't look too hard
[09:45] <natrium42> anyway, bed timez
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[09:52] <gordonjcp> yeah
[09:52] <gordonjcp> set up a dyndns account, grab a dyndns hostname and then make your "real" domain a CNAME for it
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[12:40] <robert1971> Quite here today
[12:41] <robert1971> Is everyone working hard?
[12:47] <SpeedEvil> Yes.
[12:47] Action: SpeedEvil is working on a PCB.
[12:47] <SpeedEvil> Well - netlist.
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[13:12] <jcoxon> all done
[13:23] <edmoore> jcoxon: congrats
[13:23] <jcoxon> :-)
[13:23] <edmoore> robert1971: working at work
[13:24] <edmoore> though just had pub lunch, so not too trying.
[13:24] <jcoxon> however i'm now scared that i'll fail and have to retake and lose my holiday :-(
[13:28] <jcoxon> edmoore, got some cool news
[13:28] <edmoore> jcoxon: go
[13:28] <jcoxon> akawaka wrote me some code so i get a realtime updat to the logs from truetty
[13:28] <edmoore> oh awesome
[13:28] <edmoore> that's funky
[13:28] <edmoore> in funky news, my stuff arrived this morning too
[13:28] <edmoore> so I have a fun build this eve
[13:28] <jcoxon> oooo amazing
[13:29] <jcoxon> bet you can't wait to get home
[13:29] <edmoore> i really can't
[13:30] <jcoxon> :-)
[13:30] <jcoxon> horrible weather today
[13:30] <edmoore> gonna download desktop ubuntu but swt it not to load x by default
[13:30] <jcoxon> probably best
[13:30] <edmoore> decided it'll be easier that way round as I'll want to use it with a head every now and then
[13:30] <jcoxon> you can use apt-get to add stuff anyways
[13:30] <edmoore> yeah
[13:30] <jcoxon> for the server functions
[13:31] <edmoore> exactly
[13:31] <edmoore> might do xubuntu too
[13:35] <Ei5GTB_> morning guys
[13:35] Nick change: Ei5GTB_ -> EI5GTB
[13:38] <jcoxon> edmoore, to reduce the light intensity onto the webcam what filter do i need to get?
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[13:44] <edmoore> jcoxon: neautral density filter
[13:45] <edmoore> would suggest ND4
[13:45] <jcoxon> okay
[13:45] <edmoore> 2^4 times light reduction
[13:45] <edmoore> sounds a lot but these things are logarithmic
[13:45] <robert1971> edmoore: Did you put a 6pin header on your PCB or 10pin for programming?
[13:45] <jcoxon> are they expensive?
[13:45] <edmoore> 10
[13:46] <edmoore> jcoxon: get like jessops own
[13:46] <edmoore> should be peanuts
[13:46] <jcoxon> fair enough
[13:46] <robert1971> Trying to track down a supplier for 6way header
[13:46] <edmoore> rapid
[13:46] <robert1971> Uk or US based?
[13:46] <edmoore> robert1971: rapid - rapidonline.com. though aren't you next to farnell?
[13:48] <jcoxon> edmoore, http://www.jessops.com/Store/s13774/0/Filters/Cokin/A153-Neutral-Density-x4-/details.aspx?&IsSearch=y&pageindex=1&searchword=neutral%20density&SortBy=SkuOfferingPriceASC&IsInStockOnly=False&comp=n
[13:48] <jcoxon> oops long url
[13:48] <edmoore> kinda pricey but yeah
[13:48] <edmoore> that'll be quite large, mind
[13:48] <jcoxon> there aren't jessops own
[13:49] <edmoore> ok nvm
[13:49] <edmoore> diff is a really useful unix tool. never used it before
[13:49] <jcoxon> oh yeah
[13:50] <edmoore> got me through some svn conflicts
[13:51] <robert1971> Its great ... Used it yeasterday to see what changes had been made to a makefile
[13:52] <robert1971> You can use the output from diff to patch a file
[13:52] <robert1971> Thats how patch files are created
[13:53] <robert1971> Sorry if you knew that
[13:57] <edmoore> i do now!
[13:57] <edmoore> I am proper excited that the mobo has a serial port too
[13:57] <edmoore> will def do embedded now
[14:23] <SpeedEvil> Can farnell take Switch?
[14:23] <SpeedEvil> /maestro
[14:30] <gordonjcp> SpeedEvil: just the man
[14:31] <gordonjcp> plus any other radio-y electronicky people in here
[14:31] <gordonjcp> http://members.aol.com/k5oejerry/handi-tenna.htm <- suitability for tracking balloon telemetry?
[14:31] <gordonjcp> bear in mind I'm quite a long way north, but I can get out to fairly quiet sites
[14:36] Action: SpeedEvil doesn't do ham. But...
[14:36] <SpeedEvil> Should work just fine
[14:37] <SpeedEvil> 70cm/c
[14:37] <SpeedEvil> oops
[14:38] <SpeedEvil> Does your reciever have an antenna socket?
[14:39] <gordonjcp> yup
[14:39] <edmoore> gordonjcp: should be fine
[14:39] <gordonjcp> bought an el-cheapo chinese handie
[14:39] <edmoore> we have a 13 element yagi for backup
[14:39] <gordonjcp> Jingtong JT-308
[14:39] <edmoore> but whip has been fine so far
[14:39] <SpeedEvil> 10dB is about 2.5-3 times the range.
[14:40] <edmoore> but the 13 element was crystal clear right until the balloon went over the horizon
[14:40] <gordonjcp> figured that since I'm doing my ticket quite soon, I may as well get that
[14:40] <gordonjcp> edmoore: what sort of distance?
[14:40] <edmoore> 500+ km
[14:41] <edmoore> or maybe more - we actually went to the pub and never saw the cutoff point
[14:41] <edmoore> but it was well out over the north sea
[14:41] <gordonjcp> hah
[14:41] <edmoore> poor nova 2
[14:41] <gordonjcp> so if I pick a nice quiet spot outside Glasgow I ought to hear *something*
[14:41] <edmoore> slowest ascent rate on anything ever
[14:41] <edmoore> oh i'd have thought so def
[14:42] <edmoore> if we're doing london - nottingham on a whip
[14:42] <gordonjcp> so far all I've heard is QRM off the cable box :-/
[14:43] <edmoore> :)
[14:43] <EI5GTB> any of the microcontroller guysd know oif the following would be difficult...or rather possible to get working from an avr chip:
[14:43] <EI5GTB> http://ie.youtube.com/watch?v=ygObFkvOhT4
[14:44] <gordonjcp> EI5GTB: what is it?
[14:44] <SpeedEvil> there is no especial reason you'd do the scrilly stuff.
[14:44] <SpeedEvil> But sure.
[14:44] <EI5GTB> gordonjcp, just an lcd readon of the position of a rotator
[14:44] <gordonjcp> ah, ok
[14:45] <gordonjcp> should be doable
[14:45] <gordonjcp> the tricky part is the actual position sensing
[14:45] <EI5GTB> i have that in the box
[14:45] <EI5GTB> im using the 10bit ADC
[14:45] <EI5GTB> gives me a .3 degrees acuracy for azmuth
[14:46] <EI5GTB> and .2 degree acuracy for elecation
[14:46] <SpeedEvil> way overkill
[14:47] <SpeedEvil> the antenna will not really notice if it's 10 degrees off
[14:47] <EI5GTB> hey, the more acurate the better
[14:47] <EI5GTB> especially if your running massive dishes
[14:47] <EI5GTB> every degree counts
[14:48] <SpeedEvil> Well - yes.
[14:49] <SpeedEvil> But not so much at 433MHz.
[14:49] <EI5GTB> but at 40ghz :P
[14:49] <SpeedEvil> Sure.
[14:50] <EI5GTB> heh, naw, i dont see the point in dumbing down the acuracy, when i have the capability of maintaining an accurate position, why not!
[14:51] <gordonjcp> hm
[14:51] <gordonjcp> I have some wiper motors and some power steering motors
[14:51] <gordonjcp> I wonder if the latter can be run "backwards" to retract a ram, rather than just supply pressure to the danfoss valve?
[14:52] <SpeedEvil> Not typicaklly
[14:52] <SpeedEvil> tehy typically have a one-way thrust bearing
[14:53] <SpeedEvil> they may run for a few moments backwards, but...
[14:54] <EI5GTB> dont power steering mototrs run on hydraulics?
[14:54] <gordonjcp> EI5GTB: well, it's an electric motor that drives a pump
[14:54] <gordonjcp> SpeedEvil: yeah actually I think it's got a check valve on the pump anyway
[14:55] <SpeedEvil> oh - wiper motors I was addressing.
[14:55] <gordonjcp> oh those?
[14:55] <gordonjcp> no, they run just fine in either direction
[14:55] <SpeedEvil> They may run.
[14:55] <EI5GTB> gordonjcp, oh, i thought the engine ran em
[14:56] <SpeedEvil> The gearbox is - typically - a worm gear drive, with a thrust bearing at one end of the shaft only.
[14:56] <gordonjcp> EI5GTB: depends on the car, some newer cars use an electric pump rather than a belt-driven one
[14:56] <SpeedEvil> They will wear rapidly to destruction run backwards.
[14:56] <EI5GTB> gordonjcp, oic
[14:57] <SpeedEvil> (at least teh couple of sorts I've seen) (neglecting the fact that you've got to rewire it to make it go backwards)
[14:57] <gordonjcp> SpeedEvil: bear in mind they're designed to push a large wiper blade across a snow-covered windscreen
[14:57] <SpeedEvil> gordonjcp: I was assuming you were meaning something like the design torque.
[14:57] <EI5GTB> i have wiper mototrs here
[14:57] <EI5GTB> they run perfect in reverse
[14:57] <gordonjcp> the end thrust on the motor is *immense* when you stall the mechanism
[14:58] <gordonjcp> if you're just spinning a wee aerial about then OK you've got wind loading to worry about but not much else
[14:58] <SpeedEvil> I was thinking of dishes.
[14:58] <SpeedEvil> For a yagi, it's not an issue.
[14:58] <gordonjcp> dishes would be a harder problem
[14:58] <SpeedEvil> Unless it's a big one.
[14:58] <EI5GTB> yea
[14:59] <gordonjcp> I think for a dish I'd get a gear cut to fit an electric window motor, matching the sector gear on the winder arm
[14:59] <EI5GTB> or, use hydrolics
[15:00] <EI5GTB> i know a fella has his radio shack mounted on a 4 tonne crane rotator
[15:00] <gordonjcp> it's hard to do 360 degree rotation with hydraulics, unless you use a hydraulic motor and gear it
[15:01] <EI5GTB> then just get a 4 tonne crane rotator :P
[15:01] <EI5GTB> you'll have no problem rotating your 50m dish then..
[15:02] <gordonjcp> there is that
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[17:14] <akawaka> jcoxon: glad the app worked
[17:14] <akawaka> did you get a chance to test it more fully?
[17:14] <jcoxon> yeah
[17:14] <jcoxon> its working great
[17:14] <jcoxon> truetty doesn't add a newline between the decoded packets
[17:14] <jcoxon> but i've written a ruby script to rebuild the file so everything is working
[17:15] <jcoxon> thanks for all the work :-)
[17:15] <fergusnoble> jcoxon: how'd it go today?
[17:15] <akawaka> no problem, glad to help out
[17:15] <jcoxon> fergusnoble, yeah okay i think
[17:16] <jcoxon> just got to pass so i don't have to waste my summer retaking
[17:16] <fergusnoble> yeah, cool
[17:16] <fergusnoble> now you can stop playing medicine and get back to some real work :p
[17:17] <jcoxon> haha
[17:17] <jcoxon> lets hope so
[17:17] <jcoxon> been working on the ground control software
[17:17] <fergusnoble> cool
[17:18] <jcoxon> ooooo i saw in the logs about using your rtty tracker this weekend
[17:18] <fergusnoble> ive got some linux rtty code that i modded and works quite well now
[17:18] <jcoxon> bad news
[17:18] <jcoxon> i don't have rtty :-p
[17:18] <fergusnoble> oh shizzle
[17:18] <fergusnoble> why not?
[17:18] <jcoxon> its packet
[17:19] <fergusnoble> oh i see
[17:19] <jcoxon> packet and sstv
[17:19] <fergusnoble> there is no slow speed backup?
[17:19] <fergusnoble> the packet is at 1200?
[17:19] <jcoxon> yup
[17:20] <fergusnoble> sure you dont want to stick the badger on just in case something goes wrong?
[17:20] <jcoxon> we need to change a radio then
[17:20] <jcoxon> as we are both on .650
[17:20] <fergusnoble> i can change the one on the badger if thats easier
[17:20] <jcoxon> if you've got time, and a radio yeah
[17:20] <fergusnoble> yeah i have a .075 one
[17:20] <jcoxon> if we just fly badger gps and radio
[17:20] <jcoxon> no need for gsm, cameras etc
[17:21] <fergusnoble> yup
[17:21] <fergusnoble> should be quite light with just gps and radio
[17:21] <jcoxon> any ideas of weight?
[17:22] <jcoxon> also would you need some antenna space?
[17:22] <fergusnoble> dunno about weight
[17:22] <fergusnoble> would need antenna space though i guess
[17:23] <fergusnoble> well we could meet on friday evening or saturday to sort it out
[17:24] <fergusnoble> have you seen the jetstream though
[17:24] <fergusnoble> its a little bit blowy
[17:24] <jcoxon> yeah
[17:25] <jcoxon> its got worse since this morning
[17:26] <jcoxon> hmmmm, definitely needs to think this one through
[17:26] <akawaka> launching this weekend?
[17:26] <jcoxon> was the plan
[17:34] <jcoxon> but the weather ain't looking great
[17:34] <jcoxon> fergusnoble, i'll keep an eye on the weather
[17:34] <fergusnoble> ok
[17:34] <fergusnoble> just let me know
[17:35] <jcoxon> make a decision near the time
[17:35] <jcoxon> of coruse
[17:35] <jcoxon> course*
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[17:37] <robert1971> Some of you have been playing with web based trackers. Is it easier for anyone to use these when we launch or should we hack one up? Just had a look at openGTS and openDMTP which look interesting
[17:38] <robert1971> Probably a question for natrium
[17:38] <jcoxon> i think the version we've got is pretty good
[17:39] <robert1971> I'm away off needing tracking services, but would be good to know that there is one there for the big day!
[17:39] <jcoxon> the natrium42 version is available for use
[17:39] <robert1971> I would guess at least 3-4 months to launch
[17:39] <jcoxon> you just need to get a password off him
[17:40] <robert1971> I'll have a chat with him nearer the time. I think you're going to be busy enough if you launch this w/e
[17:40] <jcoxon> haha
[17:40] <jcoxon> well sort of depends on the weather
[17:40] <jcoxon> not looking brilliant at the moment
[17:41] <robert1971> So I gather. You don't want to have to get Natrium42 to have to pick it up from his front garden
[17:41] <jcoxon> hehe, it'll be going in the other direction sadly
[17:41] <jcoxon> hopefully will land in my garden
[17:41] <robert1971> It's a globe ;-)
[17:42] <jcoxon> :-p
[17:46] <robert1971> I'm going to have another play with the AVRISPMKII I got for free last week from Farnell. I can't help but think there must be a reason for it not playing ball (working for those not used to colloquialisms) under linux. It seems a popular programmer and I have blowen the latest firmware update on the bugger. Failing that its £198 on a JTAGICE from Farnell. The only programmer to work so far is the parallel port one on my linux box.
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[17:59] <robert1971> Intersting options on mIRC
[18:01] <jcoxon> bbl
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[22:19] <akawaka> but ubuntu seems to be the current golden child
[22:19] <edmoore> yeah, the cluster at work uses centos
[22:19] <kamaji> does ubuntu server have a root account?
[22:19] <edmoore> think so...
[22:20] <jcoxon> not directly
[22:20] <kamaji> aghhhh
[22:20] <akawaka> no?
[22:20] <jcoxon> but you jsut need to set the root password
[22:20] <kamaji> I hate that ;_;
[22:20] <jcoxon> but doing sudo passwd
[22:20] <jcoxon> then it does
[22:20] <edmoore> this box will be mainly headless, svn server, bit of web serving, running sims, and maybe more if I add a graphics card - virtualisation of solidworks, maybe.
[22:21] <edmoore> and praps some embedded development, as I have a serial port. woo.
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[22:22] <jnd> so sunday, right?
[22:22] <edmoore> jcoxon: had an idea for sending texts
[22:22] <jcoxon> jnd, still debating, sorry
[22:22] <edmoore> using the gmail api, and gmail will send you texts for free
[22:22] <jnd> heh :)
[22:22] <edmoore> for calendar event reminders
[22:22] <jcoxon> edmoore, oh nice
[22:22] <edmoore> so can use that to send things to people
[22:22] <edmoore> via some sort of bodge
[22:23] <kamaji> you could use it to control balloons too if you've got a GPRS module
[22:23] <edmoore> might have some use for tracking
[22:23] <edmoore> only when the balloons are ~<1000m
[22:23] <kamaji> oh, does SMS die horribly after that?
[22:24] <edmoore> yeah
[22:25] <edmoore> we think it sees too many cell towers at once and gets confused
[22:25] <edmoore> or something
[22:25] <akawaka> yeah
[22:25] <kamaji> pity
[22:25] <akawaka> the cell placement relies on the horizon for FDM
[22:26] <kamaji> eh? how does it know where the horizon is
[22:26] <akawaka> i mean, when they layout cells and decide what channels to allocate to a particular cell
[22:29] <edmoore> I need to get anal on the cabling in this box. It's a bit cramped
[22:29] <kamaji> Oh, you mean it relies on the horizon to stop you from picking up so many channels?
[22:29] <akawaka> kamaji: yup
[22:29] <kamaji> ok, makey sensey
[22:29] <akawaka> edmoore: too a while for the sentence to become not disturbing
[22:30] <edmoore> sorry there was meant to be a 'return' in the middle there
[22:30] <edmoore> I need to get anal
[22:30] <edmoore> On the cabling in this box: it's a bit cramped.
[22:30] <akawaka> hahahaha
[22:31] <SpeedEvil> edmoore: you need to stretch it.
[22:31] <edmoore> touché
[22:32] <SpeedEvil> Has anyone run a GSM thingy at altitude, and had any complaints?
[22:32] <kamaji> I think natrium said it dies of ~20k
[22:32] <kamaji> or 18
[22:32] <kamaji> the GM862
[22:32] <akawaka> i never turn my phone off on planes
[22:32] <kamaji> it's on the HALO page
[22:33] <jcoxon> the gps dies at 24km
[22:33] <jcoxon> gsm stops at a few thousand feet
[22:33] <jcoxon> but the python engine seems fine at altitude
[22:33] <edmoore> consistant use of units
[22:34] <jcoxon> you can tell i'm a scientist
[22:34] <jcoxon> medicine uses ridiculous units such as g/dL
[22:34] <jcoxon> madness
[22:35] <akawaka> miles, kilometers, feet, meters, cu. meters, cu. feet, inches, centimeters, pascals, newtons, bars
[22:35] <SpeedEvil> jcoxon: I bet that's hectoannoying.
[22:35] <akawaka> damn yanks, they make this balloon stuff so confusing with their wacky units
[22:36] <jcoxon> nah you get used to it as its all in regards to its own reference values
[22:36] <jcoxon> so while Hb is measure in g/dL all you need to know is what is normal and abnormal and then why
[22:36] <jcoxon> you never need to convery
[22:36] <jcoxon> convert*
[22:36] Action: SpeedEvil tries to recall.
[22:37] <jcoxon> hence why they've got away with having ridiculous units
[22:37] <SpeedEvil> Ah yeah - tehre was a RISKs about blood pressure meters recalled because they could swap ranges too easy.
[22:39] <edmoore> any bios settings i should play with or are defaults mostly good enough most of the time?
[22:39] <jcoxon> auto stuff should be fine
[22:40] <jcoxon> what drive boots first?
[22:43] <edmoore> well cd, but i want software raid1 but haven't checked to see if ubuntu can deal with booting off that
[22:43] <jcoxon> oh okay
[22:43] <SpeedEvil> IMO, you don't want to do that.
[22:43] <jcoxon> thats something i've never done
[22:43] <SpeedEvil> Personally my favourite system is one 'boot' partition of 4.7G.
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[22:44] <Laurenceb> hi everyone
[22:44] <SpeedEvil> This is read-only usually, and copied over all drives.
[22:44] <edmoore> SpeedEvil: this is what i thought might be the solution
[22:44] <SpeedEvil> any drive can boot the machine to an identical state, as can a DVD
[22:47] <akawaka> which trees do you put in the boot partition?
[22:48] <SpeedEvil> Basically setup the entire system with all the variable stuff on the raid
[22:49] <SpeedEvil> It's RO until you update stuff, at which time you mirror it afterwards.
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[22:51] <SpeedEvil> i've also considered booting off a RO flash drive.
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[22:59] <jcoxon> night all
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[23:00] <akawaka> so /boot /usr and /etc on the boot partition?
[23:00] <akawaka> and /bin
[23:11] <SpeedEvil> I'm not on that system right now - it's down for rebuild.
[23:11] <SpeedEvil> IIRC everything but /var, /tmp, /opt
[23:11] <SpeedEvil> and /home
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[23:21] <Laurenceb> is that you Rocketboy?
[23:26] <G8KHW> yeah - hows it going?
[23:27] <Laurenceb> hi there
[23:27] <Laurenceb> not that bad thanks, very busy atm
[23:28] <Laurenceb> not feeling to good at the moment- I dropped a concrete lintle on my head
[23:28] <G8KHW> yeah me 2 - earning money at the mo - my contract runs to the end of september
[23:28] <Laurenceb> I see
[23:28] <G8KHW> that has to hurt
[23:29] <Laurenceb> it didnt really - I think it knocked me out
[23:29] <G8KHW> you don't want to make a habit of that
[23:29] <Laurenceb> looks like I'm ok, just mild concussion
[23:30] <G8KHW> take it easy for a few days then
[23:30] <Laurenceb> yeah
[23:31] <Laurenceb> did you get anythere with that thermopile unit?
[23:31] <SpeedEvil> Laurenceb: ow.
[23:31] <G8KHW> na not recently - its waiting for some spare time
[23:32] <G8KHW> still I have dropped down to 4 days a week recently - so a may have some time in a few weeks
[23:34] <G8KHW> sorry about the G8KHW thing - someone else has registeed RocketBoy I think - and I was fed up with being RockteBoyV1 - so I thought I'd take EI5GTB's lead
[23:34] <Laurenceb> no probs
[23:35] <SpeedEvil> I think rocketboy the nick is old enough you could take it over.
[23:35] <SpeedEvil> -NickServ(NickServ@services.)- Last seen : Apr 18 00:20:00 2008 (15 weeks, 4
[23:36] <SpeedEvil> yeah - 60 days.
[23:37] <EI5GTB> G8KHW, heh, why not! is confuses people in other channels :P
[23:39] <G8KHW> yeah - perhaps I should use my old amateur TV call - G6AMF - that would really confuse
[23:39] <EI5GTB> heh
[23:40] <G8KHW> ah well gotta go - 'm up early.
[23:40] <G8KHW> C Us
[23:40] <EI5GTB> sam 'ere
[23:40] <EI5GTB> =/
[23:40] <EI5GTB> night"
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[23:56] <fergusnoble> edmoore: turned it on yet?
[23:57] <edmoore> no will wait till 2morrow
[23:57] <edmoore> am going to bed now
[23:57] <fergusnoble> ok, night
[23:58] <edmoore> quick q
[23:58] <edmoore> my zalman is 3-pin
[23:58] <edmoore> mobo has a 4-pin for speed control
[23:59] <edmoore> would rather have auto speed control - know what the protocol is on that 4th pin?
[23:59] <edmoore> if it's just pwm i'll throw something together
[00:00] --- Wed Aug 6 2008