highaltitude.log.20100822

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[01:42] <SAIDias> Howdy
[01:42] Nick change: SAIDias -> W0OTM
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[03:28] <juxta> ping natrium42
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[11:23] <griffonbot> Received email: Jon Sowman <jon.sowman@gmail.com> "Re: Release: CU Spaceflight Landing Prediction - 2.0"
[11:28] <jonsowman> hey look it's me :)
[11:29] <juxta> hey jonsowman
[11:31] <jonsowman> hi juxta
[11:31] <jonsowman> how are things?
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[12:04] <timbobel> hey all
[12:04] <timbobel> new launches on the agenda?
[12:06] <griffonbot> @cuspaceflight: Saving launch locations to cookies implemented http://www.cuspaceflight.co.uk/predict #cusf #ukhas [http://twitter.com/cuspaceflight/status/21822427706]
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[12:41] <juxta> hey timbobel
[12:41] <juxta> somewhat a belated response here jonsowman, things are well :O
[12:41] <juxta> :)*
[12:41] <jonsowman> good :)
[12:41] <jonsowman> glad to hear
[12:42] <juxta> I was going to let you know something funny was going on with the predictor at hexoc.com today, but I gather it's pretty much a testbed so mileage may vary?
[12:43] <jonsowman> yes the hexoc one is bleeding edge, but what's up?
[12:43] <jonsowman> it's probably something I've not noticed
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[12:46] <juxta> I just ran a prediction and it was way off what the SRCF hosted one said
[12:47] <jonsowman> hmm
[12:47] <Randomskk> that's unusual
[12:47] <jonsowman> very
[12:47] <juxta> it was in the right direction-ish
[12:47] <jonsowman> juxta: did you run it more than once?
[12:47] <juxta> yeah
[12:47] <Randomskk> got the UUIDs for both?
[12:47] <juxta> let me try again
[12:48] <juxta> bah, it's good now
[12:48] <juxta> let me see if I can find them
[12:48] <jonsowman> thanks
[12:48] <Randomskk> you're totally sure it was the same launch parameters on both?
[12:49] <Randomskk> jonsowman: you know what would be cool, an admin interface that shows recently run predictions and their parameters
[12:49] <jonsowman> just hope they haven't been wiped as they're old
[12:49] <Randomskk> click to view prediction track
[12:49] <jonsowman> Randomskk: that's an excellent idea
[12:49] <jonsowman> not much effort either
[12:49] <Randomskk> yea, parse the uuids, sort by date, pretty much sorted
[12:49] <jonsowman> yea
[12:49] <jonsowman> github issue it :)
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[12:50] <juxta> excuse the delay, rdp over a 3g link is really quite bad
[12:50] <jonsowman> urgh, I can imagine
[12:51] <juxta> http://hexoc.com/hab/predict/predict/#!/uuid=ffdfd3f45c1f1fbccf1d74d8654cfe2be21a8bf5
[12:51] <jonsowman> oh that's a screwed up prediction
[12:51] <jonsowman> oh
[12:51] <jonsowman> maybe not
[12:52] <jonsowman> descent rate 20m/s?!
[12:52] <Randomskk> it just looks a bit odd
[12:52] <Randomskk> well, very odd
[12:52] <juxta> arrgghhhh the session lag is killing me
[12:52] <juxta> yes that was on purpose, we may launch aiming for a very high desc rate
[12:52] <jonsowman> ah okay
[12:53] <juxta> testing the effectiveness of a balloon as a weapon
[12:53] <juxta> ;p
[12:53] <Randomskk> !
[12:53] <jonsowman> :o
[12:53] <jonsowman> spears of death
[12:53] <juxta> let me grab the other links
[12:53] <jonsowman> Randomskk: ta for github issue
[12:53] <jonsowman> juxta: thanks
[12:54] <Randomskk> no problem, that's not exactly the hard part of implementing it
[12:54] <juxta> i wont verify them for my sanity's sake
[12:54] <juxta> http://hexoc.com/hab/predict/predict/#!/uuid=94a879b59421d8c6a3ae928e9f1d02fc07b0b359
[12:54] <juxta> http://hexoc.com/hab/predict/predict/#!/uuid=fd3d9882ae1acd5be1eac155b3235a6d8761c4d5
[12:54] <juxta> from memory the lat/lon deltas were too small in one preiction
[12:55] <juxta> prediction even
[12:55] <jonsowman> yep seems that way
[12:55] <Randomskk> tbh though, $dirs = scandir($path); foreach($dirs as $dir) if(is_dir($dir)) $uuids[] = $dir; foreach($uuids as $uuid) echo "<tr><td>$uuid</td></tr>";
[12:55] <jonsowman> Randomskk: yep, easy
[12:56] <Randomskk> add in some links and the ini parser and you're set I guess
[12:56] <jonsowman> juxta: do you have a uuid for the srcf prediction?
[12:57] <juxta> jonsowman, yes, you are in luck :P
[12:58] <juxta> http://www.srcf.ucam.org/~cuspaceflight/predict/index.php#!/uuid=3dacfed675a252908f772801b8e3e58808affdd9
[12:59] <jonsowman> right so the hexoc ones are all wrong
[12:59] <jonsowman> comparing hexoc and srcf scenarios
[13:00] <jonsowman> asc rate, desc rate, and burst alt are all the same
[13:00] <jonsowman> so the flight times should be the same
[13:00] <jonsowman> but they're not
[13:00] <Randomskk> different data model
[13:00] <jonsowman> shouldn't affect it
[13:00] <jonsowman> forex, a 5/5/30000 prediction will always have a 2h25 flight time
[13:01] <Randomskk> lands at burst on hexoc
[13:01] <jonsowman> Randomskk: which uuid?
[13:02] <Randomskk> all three hexoc ones have the land and burst icon on top of each other
[13:02] <Randomskk> cusf has it going on a bit before landing
[13:02] <jonsowman> try running again now
[13:02] <jonsowman> the hexoc one
[13:02] <Randomskk> running or refreshing
[13:02] <jonsowman> running
[13:03] <juxta> re-running the same uuid will be very painful
[13:03] <Randomskk> I'm running fd3d98
[13:03] <Randomskk> done and correct
[13:03] <Randomskk> lands properly
[13:03] <jonsowman> yea
[13:03] <juxta> actually, i could just do it on this host machine I guess
[13:03] <jonsowman> some cached dodgy gfs data I think
[13:03] <jonsowman> juxta: http://hexoc.com/hab/predict/predict/#!/uuid=fd3d9882ae1acd5be1eac155b3235a6d8761c4d5
[13:03] <Randomskk> curious
[13:03] <jonsowman> that's correct now
[13:03] <juxta> when I ran it before on another machine a few minutes ago it was working
[13:03] <jonsowman> Randomskk: it happens occasionally and I'm not sure why
[13:04] <Randomskk> can we work out theoretical flight time for asc/burst/desc and check with it
[13:04] <jonsowman> it seems to be an error in the GFS data
[13:04] <juxta> i'm launching with that prediction on tuesday
[13:04] <jonsowman> juxta: at 20m/s descent?
[13:05] <juxta> probably a bit less
[13:05] <juxta> maybe 10
[13:05] <jonsowman> that'll be interesting :)
[13:05] <juxta> it's already going to be a huge drive
[13:05] <Randomskk> why so fast?
[13:05] <juxta> stop it from going so far
[13:05] <jonsowman> what size balloon?
[13:05] <juxta> 1000g
[13:05] <jonsowman> right
[13:06] <jonsowman> could go for a bit higher ascent? depends on payload mass I guess
[13:06] <juxta> jonsowman, yeah - this is already with a full cylinder of gas
[13:06] <jonsowman> fair enough
[13:07] <juxta> we'll have a car heading to the landing site ahead of time
[13:07] <juxta> as we can't drive that distance in that time
[13:08] <juxta> we had 160km/h from the balloon last flight, will be interesting to see if that gets beaten this time
[13:08] <Randomskk> apparently you need a faster car :P
[13:08] <juxta> haha
[13:08] <Randomskk> I take it most of the driving isn't exactly on great roads?
[13:08] <Randomskk> or are they fairly good?
[13:08] <juxta> the most part is fine
[13:09] <Randomskk> cool
[13:09] <Randomskk> even less excuse to not go very fast I guess
[13:09] <juxta> usually only the last 5-10km that gets a bit rough
[13:10] <juxta> well - when the balloon will do 160km in 1hr 45 mins & I probably have to go 200km via roads in the same time, it becomes tricky ;p
[13:11] <juxta> our launch site is rather tucked away too - it's probably 10-15 minutes from there to the highway
[13:11] <timbobel> so i was going to make an iPhone app that logs position to server so you can track the car
[13:11] <SpeedEvil> :)
[13:11] <SpeedEvil> Good idea, with one small flaw!
[13:11] <timbobel> turns out if you want to publish, or put something on your iphone, it costs $99 for the SDK
[13:11] <Randomskk> looks like you got beaten to it
[13:11] <juxta> hey timbobel, I think someone did that in the last coupole of days :P
[13:11] <timbobel> o rly
[13:11] <Randomskk> and yes, that's why iphones are a waste of time
[13:11] Action: Randomskk enjoys his android
[13:12] <timbobel> yeah i know
[13:12] <timbobel> so where can i download that app
[13:12] <Randomskk> don't think it's totally finished yet
[13:12] <Randomskk> but it works, or something
[13:12] <juxta> we do it on the computers in the car though
[13:12] <Randomskk> I should make something for android
[13:12] <Randomskk> but yea, I have a python script for my laptop now
[13:12] <Randomskk> but the gps dongle was jonsowman's or something, so normally I don't have gps on the laptop
[13:12] <SpeedEvil> I should package the python for n900
[13:13] <Randomskk> the script was half written in an interactive interpreter, it could do with a little tidying before being used in earnest
[13:13] <timbobel> dongle?
[13:13] <Randomskk> well
[13:13] <timbobel> you can just use a spare falcom, or lassen, whatever
[13:13] <Randomskk> whatever you want to call it
[13:13] <timbobel> just connected to serial and done
[13:13] <Randomskk> the usb things are easier and less delicate
[13:13] <timbobel> Very true.
[13:13] <timbobel> though still
[13:13] <timbobel> dongles cost $
[13:13] <Randomskk> not if it's not mine
[13:13] <jonsowman> that one was approx £15 inc from ebay iirc
[13:13] <timbobel> spare stuff is for free
[13:14] <timbobel> that is the problem; they are not your
[13:14] <timbobel> s
[13:14] <Randomskk> £15 is less than a spare gps module tbh
[13:14] <timbobel> the nature of people is liking to have something
[13:14] <timbobel> ok another subject.
[13:14] <timbobel> what is the best way
[13:14] <timbobel> to see the power consumption of my arduino
[13:14] <juxta> multimeter
[13:14] <SpeedEvil> A battery monitor chip
[13:15] <SpeedEvil> Like the bq27200
[13:15] <timbobel> omg
[13:15] <timbobel> how about something easy
[13:15] <SpeedEvil> But a multimeter will mostly work
[13:15] <timbobel> juxta, i like your thought
[13:15] <timbobel> whats the experience
[13:15] <SpeedEvil> A scope is better
[13:15] <timbobel> speedevil, do you like naming all kinds of things i dont have ;)
[13:15] <SpeedEvil> But if you know what it's doing a multimeter is fine
[13:15] <Randomskk> how do you current sense on the scope?
[13:16] <SpeedEvil> Randomskk: you put a series - say - 100 ohm resistor in series with the supply
[13:16] <juxta> you could also turn off everything in your house, run the arduino for 100 years on a wall adapter, then look at yuour power meter and see how much power was used, then subtract away the inefficiencies of the wall adapter
[13:16] <Randomskk> SpeedEvil: bit of a pain when my multimeter has a current sense setting
[13:16] <timbobel> so i just check the voltage once, then the conn the multimeter to measure the amps
[13:16] <jonsowman> juxta: that is an excellent idea
[13:16] <timbobel> juxta: thanks good idea im on it
[13:16] <SpeedEvil> Randomskk: But the DMM typically will _completlely_ misrepresent non DC unfortunately.
[13:16] <timbobel> easy: but effective!
[13:16] <juxta> let me know how it went in 100 years time ;p
[13:17] <timbobel> tell your grandkids, ill send them a letter
[13:17] <timbobel> takes ages to arrive in oz anyway
[13:17] <SpeedEvil> Also - you can use a 100R resistor, with the meter connected through a 1M resistor, with a 47uF cap across the meter too.
[13:18] <SpeedEvil> This smooths the current, and gices you a more accurate reading
[13:18] <SpeedEvil> But if it's just for rough - simply connecting the meter in series works
[13:19] <timbobel> i will
[13:19] <timbobel> speedevil: would be better but i just want a rough number
[13:21] <Randomskk> SpeedEvil: the meter won't just do rms?
[13:21] <Randomskk> I guess the issue is in how you average it
[13:22] <SpeedEvil> Meters don't do RMS, no.
[13:22] <juxta> cheap meters suck
[13:22] <SpeedEvil> Unless they are specifically designed to
[13:22] <juxta> for anything besides pure dc
[13:23] <SpeedEvil> Or AC at 50/60Hz
[13:23] <juxta> yeah
[13:23] <SpeedEvil> AC and sinewaver
[13:23] <timbobel> juxta: i do have a thing similar to a "Kill-A-Watt"
[13:23] <juxta> so long as the sinewave is clean
[13:23] <SpeedEvil> I have a couple of models of energy meter.
[13:23] <juxta> timbobel, dont bother - the inefficienes will be way more than the arduino is using itself
[13:23] <timbobel> i know ;)
[13:24] <timbobel> all proper meters read RMS right
[13:24] <SpeedEvil> All of them misread up to 200% on some power factor correcting PSUs
[13:24] <SpeedEvil> timbobel: no.
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[13:24] <SpeedEvil> timbobel: Expensive ones might.
[13:24] <juxta> well, a meter that advertises itself as doing RMS will
[13:24] <SpeedEvil> ues
[13:25] <juxta> is it cost less than 100 bucks I really doubt it would
[13:25] <juxta> if it*
[13:25] <timbobel> mine was e10,-
[13:25] <juxta> certainly not then
[13:26] <juxta> but you don't need it in this case
[13:26] <timbobel> but the ones on the university are the 200,- types so those are okay
[13:26] <juxta> seeing as you're dealing with DC
[13:26] <timbobel> nah
[13:26] <timbobel> yeah
[13:26] <Randomskk> jonsowman: did my eyes mislead me or did one of the kids from rgs have a fluke dmm?
[13:26] <Randomskk> sgs*
[13:26] <Randomskk> not sure where that r came from
[13:26] <jonsowman> yep
[13:26] <jonsowman> can't remember who
[13:26] <SpeedEvil> dealextreme only seems to have http://www.dealextreme.com/details.dx/sku.30573 to measure RMS - which is rather more...
[13:26] <jonsowman> possibly andrew
[13:26] <SpeedEvil> well - when searching fro RMA
[13:26] <Randomskk> D:
[13:26] <jonsowman> I remember seeing it
[13:26] <Randomskk> why
[13:27] <Randomskk> SpeedEvil: looks like a nice scope though
[13:27] <juxta> i've been thinking about buying one of those scopes from DX - the Rigol ones
[13:28] <SpeedEvil> esp with the 'overclock'
[13:28] <juxta> (the ones that can be firmware upgraded from 50mhz to 100mhz from memory)
[13:28] <juxta> yeah :)
[13:29] <RocketBoy> jonsowman: Is the old version of the CUSF predictor still available somewhere
[13:29] <timbobel> 0.13 amps swinging tp 0.17 with 0.29 peaks
[13:29] <timbobel> on 8.4V
[13:30] <Randomskk> http://www.srcf.ucam.org/~cuspaceflight/predict_old/
[13:30] <Randomskk> but, why do you want it?
[13:30] <timbobel> ard mega+gprs+gps
[13:30] <juxta> timbobel, your arduino has a linear regulator, so that will be constant regardless of the voltage pretty much
[13:30] <Randomskk> it's deprecated, if it does something you need it'd be better to have that added to the new one
[13:30] Action: Randomskk is not jonsowman, but does know where the old predictor is
[13:31] <RocketBoy> Randomskk: thanks
[13:31] <Randomskk> RocketBoy: ^?
[13:32] <juxta> Randomskk, iphone compatibility I think?
[13:33] <timbobel> how many watts does a AA bat hold
[13:33] <Randomskk> timbobel: that's not really how it works
[13:33] <juxta> depends on how big the watt is
[13:33] <RocketBoy> Randomskk: cos the new one doesn't run on Safari on my iPhone
[13:33] <juxta> some watts grow up to be really big and fat
[13:33] <timbobel> oh shit
[13:33] <SpeedEvil> timbobel: about - roughly - 3 watt-hours
[13:33] <timbobel> how many joulez then
[13:33] <Randomskk> RocketBoy: interesting, fails how?
[13:33] <SpeedEvil> timbobel: 10000 or so
[13:33] <Randomskk> the old predictor uses maps api v2, the new one v3, new one should work a lot better on mobile devices so I take it it's part of the ui that breaks?
[13:34] <SpeedEvil> timbobel: 1/10th of a watt = ~30 hours
[13:34] <juxta> depending on the battery type of course
[13:34] <timbobel> the rechargable cheap ones
[13:34] <timbobel> so on 1 watt i guess it should hold out 2 hours
[13:34] <timbobel> righto
[13:34] <SpeedEvil> timbobel: yes.
[13:34] <Randomskk> rechargable ones will usually have written on them how much charge they store, in mAh
[13:34] <RocketBoy> Randomskk: difficult ot explain - but the major problem is that you cant enter any data
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[13:35] <Randomskk> that is a problem
[13:35] <timbobel> yeah but i dont really know how well they are loaded.. so eh.. yeah..
[13:35] <timbobel> cheap loader..
[13:35] <Randomskk> they'll still typically store about the amount of charge written on them
[13:36] <timbobel> btw, guys, with soldering pcb's, do you use thin soldering tips?
[13:36] <juxta> thin-ish i suppose
[13:36] <timbobel> random; yeah but it also depends on how long theyre loaded right
[13:36] <Randomskk> not a giant fat thing, but I don't use the uttrafine tips
[13:36] <juxta> not a super fine pencil though (personally at least)
[13:36] <Randomskk> timbobel: well it depends on how long they've been charged for, obviously, yes
[13:36] <timbobel> i only have a fat one :'(
[13:36] <juxta> how fat?
[13:36] <Randomskk> wow, it breaks kinda badly on android's browser too
[13:36] <timbobel> so need a new one. almost bought one from sparkfun, but those are 110V's
[13:37] <Randomskk> it looks like it works, but the parameters box is too big and not movable
[13:37] <Randomskk> timbobel: you probably don't
[13:37] <Randomskk> even fat tips work
[13:37] <jonsowman> oh dear
[13:37] <Randomskk> especially for non-smd things
[13:37] <timbobel> yeah i got a lot of smd
[13:37] <jonsowman> hadn't thought about mobile devices
[13:37] <Randomskk> jonsowman: hehe
[13:37] <jonsowman> maybe a different UI for them is in order
[13:37] <Randomskk> well at least you have an iphone to test with
[13:37] <jonsowman> true
[13:37] <Randomskk> though tbh just set browser res to "tiny"
[13:37] <jonsowman> yea
[13:37] <Randomskk> the v3 maps api should be excellent on mobile apps
[13:38] <Randomskk> so some tweaking of the UI and the new predictor should work really nicely
[13:38] <jonsowman> yea
[13:38] <jonsowman> another thing on the todo list then :)
[13:38] <juxta> jonsowman, i forgot to mention - the hexoc predictor seems to display the map type selector buttons on 2 rows for some reason
[13:38] <Randomskk> perhaps tabs instead of floating windows
[13:38] <Randomskk> juxta: browser?
[13:38] <juxta> FF
[13:38] <Randomskk> looks fine for me in chrome and ff
[13:38] <juxta> 3.6
[13:38] <jonsowman> fine here
[13:38] <jonsowman> how odd
[13:38] <Randomskk> 3.6.9 here
[13:38] <jonsowman> 3.6.8
[13:38] <Randomskk> ctrl+f5?
[13:39] <Randomskk> jonsowman: maybe some jquery browser detection, then swap the divs for tabs, "input parameters" and "map"?
[13:39] <jonsowman> sounds reasonable
[13:39] <jonsowman> is going to need a bit of work to make it neat and happy
[13:40] <jonsowman> not that I mind
[13:40] <juxta> I tell a lie - it's working now
[13:40] <Randomskk> give it a week and I'll be a free man
[13:40] <juxta> it was showing up funny this morning
[13:40] <jonsowman> Randomskk: :D
[13:41] <Randomskk> added an issue anyway
[13:41] <Randomskk> can't wait for github to add a feature where it writes code to solve your issues for you
[13:41] <jonsowman> that'd be excellent
[13:41] <jonsowman> haha
[13:45] <timbobel> random, you had some php skills, right?
[13:45] <timbobel> i have a simple question
[13:45] <timbobel> i will ask to everyone
[13:46] Action: Randomskk is a professional php developer
[13:46] Action: Randomskk scoffs
[13:46] Action: timbobel wonders how a server can poll information even if you dont request the website
[13:46] <Randomskk> I am for one more week anyway
[13:46] <Randomskk> timbobel: basically a cronjob
[13:46] <Randomskk> runs on the server say every minute
[13:46] <timbobel> what i do now, is i poll a textfile from php, a website that i open that refreshes every 20 seconds, and polls the textfile upon refreshing
[13:46] <Randomskk> yea, that's crap
[13:46] <timbobel> a bit of respect please/
[13:47] <juxta> in the nicest way possible
[13:47] <Randomskk> that's a really messy solution
[13:47] <jonsowman> hahaha
[13:47] <timbobel> please note
[13:47] <Randomskk> you're totally sure you can't HTTP request from the phone, FTP is the only way?
[13:47] <Randomskk> if so: is the server hosting the text file running windows or linux?
[13:47] <timbobel> before the day before yesterday i knew 0 about php, mysql, apache, etc
[13:47] <timbobel> i think linux, its that friend that hosts for me
[13:47] <timbobel> it takes php now
[13:48] <juxta> cron is what you want timbobel
[13:48] <Randomskk> yup
[13:48] <juxta> you could have cron call your script even if you wanted
[13:48] <timbobel> okay
[13:48] <timbobel> so
[13:48] <timbobel> where are those pointers
[13:48] <juxta> you need to edit what's called the crontab
[13:48] <timbobel> a cron call sounds like a sexual act
[13:48] <Randomskk> do you have shell access to the server?
[13:48] <timbobel> like a cronjob
[13:49] <juxta> yes, a cron job
[13:49] <Randomskk> you must have some interesting sex
[13:49] <Randomskk> is it very regular?
[13:49] <juxta> at least it'd be regular
[13:49] <timbobel> yeah
[13:49] <juxta> ....oh
[13:49] <jonsowman> uh
[13:49] <timbobel> before i liked cornjobbing i just polled my info
[13:49] <Randomskk> so anyway, awful puns aside
[13:49] <jonsowman> what's going on?
[13:49] <timbobel> indeed. how do i do this
[13:49] <Randomskk> do you have shell access to the server?
[13:49] <juxta> corn is nice
[13:49] <timbobel> i dont think so
[13:49] <Randomskk> jonsowman: timbobel said cronjobs sounded like a sex act
[13:50] <Randomskk> timbobel: okay, you'll need to ask your friend to add a cron job for you
[13:50] <timbobel> what i know is that its hosting on a ftp server on which i put my php files that can be executed
[13:50] <jonsowman> I see
[13:50] <juxta> timbobel, you'll need to ask the host to setup a cron job for you then
[13:50] <timbobel> OMG cron-job is an actual expression
[13:51] <timbobel> where do i put in this cron stuff
[13:51] <Randomskk> you'll need to ask your host. it likely won't be in your ftp access
[13:52] <timbobel> hm allright
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[13:53] <Randomskk> ooh. a new updated rom for my phone
[13:53] <Randomskk> let's just upgrade this, ota, when I want, to the version I want, for free
[13:53] <Randomskk> =D
[13:53] <RocketBoy> member:Randomskk: correction - I just tried it again (the cusf predictor on my iPhone) - you can enter data and run the prediction - but when it has run the screen seems to be locked to the input area - I can only see the portion of the map underneath the input area - and I can more about the map.
[13:54] <juxta> i suspect firmware sabotage by Three on my phone
[13:54] <RocketBoy> more = move
[13:54] <juxta> the minute I have it unlocked from them as a carrier half a dozen bugs show up
[13:54] <jonsowman> RocketBoy: yea it seems quite broken
[13:54] <jonsowman> a mobile-happy UI is on its way at some point
[13:55] <timbobel> i'm craving for a cronjob
[13:56] <Randomskk> ...
[13:56] <Randomskk> there are much worse things in the unix world
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[13:56] <timbobel> i bet
[13:56] <jonsowman> cumtrapz
[13:57] <jonsowman> ah matlab is going to be fun this year
[13:57] <RocketBoy> jonsowman: thanks - that would be great
[13:57] <timbobel> so i am just using my polling method, which, just rocks.
[13:57] <Randomskk> cumtrapz is epic
[13:57] <Randomskk> I mean, honestly, why
[13:57] <jonsowman> haha I know
[13:57] <timbobel> rofffl
[13:57] <timbobel> that exists in matlab too!!
[13:57] <Randomskk> you just know matlab won't be fun though
[13:57] <jonsowman> I know
[13:57] <jonsowman> not really looking forward to that
[13:58] <timbobel> See Also
[13:58] <timbobel> cumsum, trapz
[13:58] <jonsowman> would rather have more C++ tbh
[13:58] <timbobel> INGGGGG
[13:58] <timbobel> ahahahahahahah!
[13:58] <timbobel> see also: cumsum omg wtf
[13:58] <timbobel> okay so whatever i'm out
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[14:00] <juxta> first flight of the chinese balloons coming up next weekend
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[14:01] <fsphil> cool
[14:01] <juxta> hey jcoxon
[14:01] <jcoxon> afternoon
[14:01] <juxta> still on the 3G i gather? ;p
[14:01] <jcoxon> yup
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[14:02] <jcoxon> no broadband yet
[14:02] <timbobel> Randomskk one more question =D
[14:02] <jcoxon> they now claim by monday evening
[14:02] <timbobel> how do i make a very basic login thingy
[14:02] <timbobel> wait pm
[14:02] <Randomskk> ask here is fine
[14:02] <Randomskk> what kind of login
[14:02] <juxta> timbobel, there are a million tutorials out there. the simplest thing is just to do HTTP basic auth with php if you want it dont quickly
[14:02] <juxta> done*
[14:03] <Randomskk> ^
[14:03] <RocketBoy> jonsowman: Just reading back through the logs - you are right Totex are Japanese - but I'm reasonably certain Kaymont balloons are just re-badged Totex.
[14:04] <juxta> I believe that's correct - it would at least explain their poor stock availability if that's the case RocketBoy
[14:04] <juxta> are Kaymont a pain to deal with to order to the UK? they really don't like sending things down here.
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[14:05] <jonsowman> RocketBoy: interesting - didn't know that
[14:05] <jonsowman> I thought Kaymont were an OEM but I don't know why
[14:06] <RocketBoy> I suspect the main reason is they just don't like dealing in 1 and 2s - in Aus it would bake more sense to deal with an asian distributor
[14:06] <jonsowman> yes that's fair enough
[14:06] <jonsowman> makes sense
[14:07] <jonsowman> juxta: I've ordered to the UK direct from Kaymont before
[14:07] <jonsowman> no problem at all
[14:07] <RocketBoy> I sometines get balloons through the European Totex distributor - but availability of larger balloons through them is a real pain
[14:07] <jonsowman> shipping wasn't exactly cheap but they didn't complain
[14:07] <RocketBoy> again they won't really deal in small numbers
[14:08] <juxta> I ordered from them too, I bought 4 balloons, but shipping really killed it
[14:08] <juxta> I understand the small volume thing, if they were realistic with their shipping I would have been happy to buy more balloons
[14:09] <RocketBoy> I would have thought that getting them via Kaymont for the UK was more expensive than getting them from me ?
[14:09] <jonsowman> RocketBoy: it was indeed
[14:09] <jonsowman> hence for Apex II we ordered it from you
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[14:11] <RocketBoy> yeah - Thats why I set up the website - its cheaper for me to order them in bulk and then sell them singly
[14:11] <jcoxon> RocketBoy, did you get any info about falcoms?
[14:11] <Randomskk> oh, wow. my phone now shows up as "HTC Android Phone" with a smartphone icon in ubuntu
[14:11] <Randomskk> hot stuff
[14:11] <Randomskk> RocketBoy: pretty new website :o
[14:12] <RocketBoy> jcoxon: Nope my contact didn't get back to me
[14:12] <RocketBoy> did U get yours?
[14:12] <jcoxon> they haven't arrived - got a feeling they took my paypal address and delivered to london
[14:12] <jonsowman> RocketBoy: new website is excellent!
[14:13] <RocketBoy> jonsowman: thanks - thats thanks to iWeb on the mac
[14:13] <RocketBoy> it will allow me to keep the website more up to date
[14:13] <Randomskk> and more colourful!
[14:14] <RocketBoy> yeah - the old one was sooooooo dullllllll
[14:14] <Randomskk> this one even has drop shadows!
[14:14] <fsphil> it served its purpose :)
[14:14] <Randomskk> s/shadows/shadow/
[14:14] <Randomskk> but hey
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[14:14] <Randomskk> ooh, new rom installed, yum
[14:14] <Randomskk> hah an even better boot screen
[14:14] <jonsowman> Randomskk: better?
[14:14] <Randomskk> jonsowman: I don't think you ever saw the previous boot screen, after the psycodelic one
[14:15] <jonsowman> I saw the psycho one
[14:15] <Randomskk> yea, after that there was a good one for the first 2.2 rom
[14:15] <Randomskk> but this one has a newer and even better one
[14:15] <Randomskk> (this being froydvillain 1.3.0)
[14:15] <jonsowman> :o
[14:15] <Randomskk> (which is android 2.2, version 1.3 of the rom - used to be on 1.0)
[14:15] <jonsowman> how exciting
[14:16] <Randomskk> quite
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[14:21] <timbobel> did i already say that random rocks?
[14:21] <timbobel> im out
[14:21] <timbobel> thanks again man
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[14:37] <jcoxon> its become quite a quiet summer for launches now
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[14:38] <fsphil> bit of a gap after so many launches earlier
[14:38] <jcoxon> indeed
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[14:38] <fsphil> I know a few are working on payloads, but is anyone near launching?
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[14:39] <jcoxon> i've got pegasus VII sitting around
[14:39] <jcoxon> just needs new batteries
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[14:39] <juxta> fsphil, i'm launching tuesday, though I'm not in the UK
[14:40] <juxta> and then again saturday & potentially sunday too
[14:41] <fsphil> are you flying the repeater on those?
[14:41] <juxta> on saturday, yes
[14:43] <juxta> I really need to look at hydrogen as a lift gas or get sponsorship for helium, it's a bit pricey
[14:45] <jcoxon> i sort of agree with H2
[14:45] <jcoxon> well i'm beginning to come round to the idea at least
[14:45] <juxta> the issue with He being scarce is a bit of a factor too
[14:46] <jcoxon> yeah
[14:46] <juxta> infact we got a hard time from a med researcher at that science fair
[14:46] <jcoxon> saying its a waste/
[14:46] <jcoxon> ?
[14:46] <juxta> pretty much
[14:47] <jcoxon> pah - its a commodity - you pay money for it
[14:47] <jcoxon> if it wasn't you some one else would
[14:47] <juxta> hehe
[14:47] <russss> it's a commodity which is artificially under-priced by the US government
[14:47] <jcoxon> russss, well that their fault
[14:47] <jcoxon> and sure we should look towards alternatives
[14:48] <jcoxon> but its not like we can correct that
[14:48] <russss> yeah
[14:49] <juxta> there's a possibility we may be able to launch from our met office launch site, using their onsite h2 generation
[14:49] <juxta> need to follow that one up
[14:49] <jcoxon> that would be cool
[14:50] <juxta> it would be - but means you'd need a launch team plus a chase team, as getting to the sites where balloons land involves driving across the city if you start at the airport where the met office launch
[14:50] <juxta> unless it was midnight you'd have a hard time with traffic
[14:53] <jcoxon> my other argument is that we launch a few flights a year and the met office launches loads - i'm sure that researcher uses weather forecasts :-p
[14:55] <juxta> haha, true
[14:55] <juxta> but our met office uses h2, yours probably would too?
[14:56] <jcoxon> not sure
[14:56] <SpeedEvil> I see no reason not to use H2 if you're doing it professionally.
[14:56] <juxta> agreed
[14:56] <SpeedEvil> Even a remote filling station isn't that much.
[14:56] <juxta> once you have the necessary in place it seems more sensible
[14:57] <jcoxon> eek http://www.telegraph.co.uk/news/uknews/7841724/Met-Office-apologises-after-weather-balloon-crashes-into-conservatory.html
[14:58] Action: SpeedEvil has the urge to comment that it's all a conspiracy and it's really an alien.
[14:59] <SpeedEvil> A cracked windscreen?
[14:59] <SpeedEvil> That's pretty extreme
[15:00] <juxta> radiosondes are pretty small
[15:00] <SpeedEvil> Someone calls approximately once every six months saying that a radiosonde might have damaged their property, she said. To put this in context we launch around 3,000 a year.
[15:00] <juxta> they'd fall fast if they came off the line
[15:00] <SpeedEvil> That is an _astonishingly_ high statistic
[15:01] <SpeedEvil> That is - that the claims are as common as 1/1500
[15:01] <jcoxon> tis a good statistic to have
[15:02] <Randomskk> I'd heard it was much, much rare
[15:02] <Randomskk> rare*
[15:02] <Randomskk> rarer* ugh
[15:02] <jcoxon> well there are the stats that there has never been an incident in the air
[15:02] <jcoxon> e.g. collision with aircraft...
[15:03] <juxta> that's a bonus
[15:03] <SpeedEvil> I simply don't believe that accidents are that common.
[15:03] <jcoxon> SpeedEvil, quite a dense area though
[15:03] <SpeedEvil> Perhaps.
[15:03] <jcoxon> juxta is lucky with all that space :-p
[15:03] <juxta> but then again, billions of dollars go into building things which CAN hit airplanes, I guess it's not as easy as just letting a balloon go :)
[15:03] <jcoxon> hehe
[15:03] <jcoxon> right bbl
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[15:04] <SpeedEvil> But I suspect it's 'oooh - a radiosonde fell in the garden, and I have a broken window from a couple of months ago that I was meaning to fix'
[15:04] <juxta> haha
[15:04] <juxta> yeah, probably
[15:05] <juxta> ping fsphil
[15:06] <SpeedEvil> UKHAS insurance pot - put in a quid every launch - would seem to cover the above accident rates. :)
[15:09] <russss> sounds like the Met Office self-insures then
[15:28] <SpeedEvil> Random.
[15:28] <SpeedEvil> Does anyone happen to know if there are any legal wavelengths in the UK rrthat might be used for beaming power to a model.
[15:29] <Randomskk> I wonder if technically you could do it under a amateur license in the ghz freqs
[15:29] <Randomskk> need to modulate a callsign onto it. probably doesn't count as comms though
[15:29] <Randomskk> I suspect you'd need a NoV
[15:29] Action: SpeedEvil sighs.
[15:29] <SpeedEvil> I want a gyrotron.
[15:29] <SpeedEvil> :)
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[16:00] <Upu> Question for tracking launches is there any benefit in using a CT-62 cable , can dl-fldigi do something to my FT817 with it ?
[16:01] <SpeedEvil> I vaguely recall that it can tune it
[16:01] <SpeedEvil> I'm unsure if that was themodel of the cable though
[16:01] <SpeedEvil> tune it - swap sidebands, ...
[16:01] <Upu> so there is a benefit to using one then
[16:01] <Upu> ok
[16:01] <Upu> just getting a list of things that may be of use
[16:06] <sbasuita> anyone here going to be at reading festival this weekend?
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[16:11] <Upu> Not me
[16:11] <Upu> I hate Ebay
[16:11] <Upu> http://cgi.ebay.co.uk/YAESU-CT-62-CAT-Interface-FT-100-FT-817-FT-857-FT-897-/310184640563?pt=LH_DefaultDomain_0#ht_1097wt_1137
[16:11] <juxta> hey natrium
[16:11] <Upu> item location Doncaster UK
[16:11] <Upu> won't ship to the UK
[16:11] <Upu> wut
[16:11] <juxta> haha
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[16:14] <SpeedEvil> odd
[16:14] <LA3QMA1> by from hk360radio probably faster delivery than domestic
[16:15] <Upu> that an e-bay seller ?
[16:15] <Upu> yeah found it
[16:15] <LA3QMA1> yes
[16:15] <LA3QMA1> got my ft817 there
[16:15] Nick change: LA3QMA1 -> LA3QMA
[16:16] <juxta> i also bought from hk360radio
[16:16] <juxta> found them good
[16:16] <LA3QMA> 3days from KongHong ;o) using a local shop and the Norwegian postservice it can take 1week just to deliver a few km
[16:17] <Upu> http://cgi.ebay.com/P49-Prog-Cable-FT-817-FT-857-FT-897-CT-92-/150476226776?pt=UK_ConsumerElectronics_SpecialistRadioEquipment_SM#ht_3776wt_1139
[16:17] <Upu> that the same one ?
[16:17] <Upu> as the CT-62
[16:20] <LA3QMA> do you want usb or serial?
[16:20] <Upu> USB
[16:20] <Upu> my netbook is sans serial
[16:20] <juxta> ping fsphil
[16:20] <LA3QMA> the last link you have is for usb so then i think yiu have the correct item
[16:26] <LA3QMA> hehe one issue in the movie Battle Under Orion. The destroyer had a brand new white rotating radar in the top. not usual in 1945
[16:42] <fsphil> pong juxta
[16:42] <fsphil> sorry, was out watching a thunderstorm :)
[16:44] <juxta> no worries :)
[16:44] <juxta> was going ask about that rx audio bandwidth thing in fldigi
[16:44] <fsphil> aye
[16:45] <juxta> I got a recent version of dl-fldigi and the slider now goes all the way up
[16:45] <juxta> but it still seems to default very low
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[16:46] <fsphil> yea they changed the defaults upstream
[16:46] <juxta> ah right
[16:46] <fsphil> it *should* work better that way
[16:46] <juxta> hmm
[16:47] <juxta> i better do some testing then :)
[16:50] <fsphil> rtty_BW = 1.5 * rtty_baud;
[16:52] <fsphil> not sure where the 1.5 comes from
[16:54] <juxta> I'll email the maintainers of fldigi and enquire
[17:00] <juxta> fsphil, I also wanted to ask you - the RS code you had up on the wiki - did you modify fldigi to do the decoding too?
[17:00] <fsphil> yes, there decoder is in there
[17:01] <juxta> very cool, I will check it out :)
[17:01] <fsphil> I should probably put that on the wiki too
[17:01] <juxta> is it in the dl-fldigi master or just your branch?
[17:02] <juxta> or fork rather
[17:02] <fsphil> it's in the main repo now
[17:03] <fsphil> http://github.com/jamescoxon/dl-fldigi/blob/master/src/ssdv/rs8decode.c
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[17:10] <juxta> fsphil, tested it just now with the rx filter bandwidth
[17:11] <juxta> using the defaults it's very poor
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[17:11] <fsphil> poor decoding or frequency tracking?
[17:11] <juxta> it can't even track the gentle shift of my transmitter warming up under a halogen light
[17:11] <juxta> the AFC that is
[17:11] <juxta> as soon as you up the bandwidth it tracks it without hassle
[17:12] <fsphil> can you record a sample?
[17:13] <juxta> yep
[17:13] <juxta> just a moment and I'll do it
[17:14] <juxta> just installing some recording software on my carputer
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[17:15] <fsphil> you can capture in fldigi
[17:15] <fsphil> File -> Audio -> RX Capture
[17:22] <juxta> oh
[17:22] <juxta> I made an video recording of it
[17:22] <juxta> haha
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[17:22] <juxta> an = a
[17:22] <Randomskk__> Randomskk: test
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[17:23] <Randomskk> hmm so I now get email notifications
[17:23] <Randomskk> but it seems to send it even if I'm not away
[17:23] <juxta> fsphil, want the video?
[17:23] <fsphil> aye fire away
[17:23] <juxta> i suppose i'd better upload it to youtube or some such
[17:24] <fsphil> how big is it?
[17:25] <juxta> 40mb in the format this capture utility gave me
[17:26] <fsphil> might be safer just to capture the audio in fldigi - I'd be wary of youtube compressing the audio too much
[17:26] <juxta> probably a better idea
[17:26] <juxta> let me do it now
[17:30] <juxta> fsphil, www.bogaurd.net/capture.wav
[17:30] <juxta> 50b rtty, 425hz shift
[17:30] <juxta> you'll need to turn RV on
[17:30] <juxta> i start off doing some very small freq shifts which the default rc bandwidth can't even track
[17:30] <juxta> then some very agressive shifts
[17:31] <juxta> if you increase the rx bandwidth to say 500 it should decode it all no worries
[17:33] <fsphil> $$HORUS,2,00:00:09,0.0000,0.0000,0,0,0;0;0*88EB <- that look right?
[17:33] <juxta> yeah
[17:34] <fsphil> your shift is actually about 500hz
[17:34] <juxta> yeah I know
[17:34] <juxta> it's slightly off on the particular payload I have there
[17:34] <fsphil> if I use a custom shift its able to track the small drift
[17:35] <juxta> but still falls over on anything slightly more demanding
[17:38] <fsphil> indeed
[17:39] <juxta> what do you think?
[17:40] <fsphil> 300hz seems to be handling all those shifts
[17:40] <juxta> I think perhaps 300hz was the old default for 50b
[17:41] <fsphil> I've got some samples from other flights, I'll see how a wider filter might affect them -- it might actually be a benefit for them too
[17:41] <juxta> i haven't found any disadvantages in having a wider filter - though maybe it would perform poorly when the signal is very weak
[17:42] <juxta> I think the default should really be raised though - 75hz doesnt seem to be able to reliably track the shift you'd see when things start to cool down/warm up
[17:42] <fsphil> the only other issue I can think of is for high baud rates, the filters will overlap without a huge shift
[17:42] <juxta> even with the filter set to the maximum (overlapping) it doesn't seem to impact on decoding performance
[17:49] <SpeedEvil> it marginally affects co-channel
[17:50] <SpeedEvil> and yes, noise
[17:51] <juxta> I think decent AFC is worth a slight reduction in performance when decoding weak signals
[17:52] <fsphil> yea, with the way the ntx2 drifts
[17:52] <juxta> exactly
[17:54] <juxta> fsphil, shall I raise an issue at the fl-fldigi master?
[17:55] <fsphil> good idea -- I'll test this a bit more and see how it behaves with these other samples
[17:55] <juxta> okay great
[17:55] <juxta> it's just a one line change though, right?
[17:56] <fsphil> yes
[17:56] <juxta> do you know which file/line?
[17:57] <fsphil> http://github.com/jamescoxon/dl-fldigi/blob/master/src/cw_rtty/rtty.cxx#L178
[17:57] <juxta> cheers, will link to that
[18:00] <fsphil> before the last commit to that line, it read: rtty_BW = 1.3 * rtty_baud;
[18:00] <fsphil> it's actually been increased
[18:01] <juxta> this git repo was only established based on the most recent version of fldigi though, wasnt it?
[18:01] <fsphil> each merge brings in the entire history
[18:03] <fsphil> I wonder if the AFC bandwidth can be changed independently
[18:03] <juxta> fsphil, http://code.google.com/p/dl-fldigi/source/browse/branches/oldtrunk/src/cw_rtty/rtty.cxx
[18:04] <juxta> line 164
[18:04] Action: jcoxon has shrunk his atlas flight computer down to 50mmx50mm which means 10 will cost $23
[18:04] <juxta> thats very small and cheap :D
[18:06] <SpeedEvil> :)
[18:06] <SpeedEvil> Whart'sthe BOM?
[18:06] <jcoxon> hmmm so:
[18:07] <jcoxon> 1xpc = 1.4 gbp
[18:07] <jcoxon> 1x ntx2 = 13gbp
[18:08] <jcoxon> 1x atmega328 = 3gbp
[18:08] <jcoxon> 1x 3.3v reg
[18:08] <Randomskk> yay, now I have email notifications when away. success
[18:09] <jcoxon> and then a couple of resistors, capacitors and headers
[18:09] <jcoxon> so not 'that' much
[18:11] <DanielRichman> what about the gps?
[18:11] <juxta> jcoxon made up some breakout boards for the FSA03's
[18:12] <DanielRichman> oh that's not on the main flight pc board?
[18:12] <juxta> I guess not
[18:13] <DanielRichman> hmm I reckon with all SMD components you could create a 50mm^2 flight pc board inc gps. The gps might be a bit too close to the ntx2 though
[18:13] <Randomskk> easily
[18:13] <juxta> fsphil, have raised that issue
[18:14] <DanielRichman> I didn't realise the ntx2 was that cheap
[18:14] <Randomskk> badgercub was like 7cm including massive pyto stuff
[18:14] <Randomskk> though tiny in the other direction
[18:14] <Randomskk> pyro*
[18:14] <DanielRichman> oh yeah, I remember
[18:15] <Randomskk> http://www.srcf.ucam.org/cuspaceflight/wiki/doku.php?id=badgercub
[18:15] <Randomskk> though it has the venus thing for gps and the cc1111 for radio
[18:15] <Randomskk> so it's a bit different
[18:16] <Randomskk> I'm planning on making a really tiny flight board with an stm32 in qfn, ntx2, some form of gps that might be the fsa03 if I can get some
[18:19] <Randomskk> but that won't be for a little while yet.
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[18:32] <DanielRichman> will the fsa03 and the nim2/ntx2 cause intereference to each other so much that placing them close to each other on the pcb is a real problem?
[18:36] <fsphil> the narrower bandwidth is much better at decoding weak signals
[18:40] <SpeedEvil> Are these sumulated weak signals, or archives?
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[18:41] <fsphil> I'm running it with a recording I made of one of the icarus flights
[18:43] <fsphil> the instance with 75hz bandwidth is decoding pretty well, the 300hz version has only got one so far
[18:45] <fsphil> hit a part with a strong signal, both are decoding equally well
[18:46] <fsphil> aah, a small bit of broadband noise totally screws up the 300hz copy
[18:52] <jcoxon> eek our inherited thomson skybox is emitting a high pitched noise
[18:53] <jcoxon> very very annoying
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[19:11] <jcoxon> fsphil, you going to fix the bandwidth issue or shall i?
[19:15] <m1x10> hi all
[19:16] <jcoxon> evening m1x10
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[21:07] <Laurenceb> hi
[21:07] <SpeedEvil> hi
[21:07] Action: Laurenceb had a neat idea for syncronising video from a cheap camera to e.g. IMU+GPS data
[21:08] <Laurenceb> have a small LED in frame flashing a PRN code
[21:08] <SpeedEvil> flashing LED?
[21:08] <SpeedEvil> yeah
[21:08] <Laurenceb> if its PRN you can get the exact time of each frame with only one led
[21:08] <SpeedEvil> Or audio
[21:09] <Laurenceb> audio might be out of sync due to compression
[21:09] <SpeedEvil> true
[21:09] <Laurenceb> i was thinking for 3D terrain scanning with a UAV
[21:09] <SpeedEvil> you mean bicameral?
[21:10] <Laurenceb> if you know the position and attitude of each frame - with a single camera
[21:10] <SpeedEvil> yeah
[21:11] <SpeedEvil> I dunno how well that works
[21:12] <Laurenceb> better than 2 cameras
[21:12] <SpeedEvil> GPS probably has what - 5m residual best typical?
[21:12] <Laurenceb> yes, but differential resolution when combined with imu
[21:12] <SpeedEvil> true
[21:12] <Laurenceb> would be very good, hopefully cm
[21:12] <Laurenceb> then you have a huge range of angles as you move over the scene
[21:12] <SpeedEvil> you mean differntial compared wirh something on ground?
[21:12] <SpeedEvil> a GPS on ground
[21:13] <Laurenceb> especially if you pass over from different routes
[21:13] <SpeedEvil> Doing the RTK/... thing
[21:13] <Laurenceb> gps on the ground for surveying
[21:13] <Laurenceb> but for just scene capture it wouldnt be necessary
[21:13] <SpeedEvil> yup
[21:13] <SpeedEvil> I need to get my laser ranger done.
[21:14] <Laurenceb> aiui you could do point and line extraction then assemble a wireframe and render it
[21:14] <Laurenceb> but im no computer vision expert
[21:15] <Laurenceb> but its fairly basic stuff - theres clever techniques like photos at different sun angles and comparing the contrast
[21:15] <Laurenceb> thats often used for satellite photos
[21:17] <Laurenceb> iirc someone came up with a 3D reconstruction algorithm that didnt need any attitude or position info
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[21:20] <SpeedEvil> Yeah - there are lots of ways of getting data that looks plausible.
[21:20] <SpeedEvil> Accurate is harder.
[21:20] <SpeedEvil> :)
[21:21] <Laurenceb> http://forums.somethingawful.com/showthread.php?noseen=0&threadid=3271649&pagenumber=16#post381212767
[21:21] <Laurenceb> what the fudge ?!
[21:21] <Laurenceb> sfw btw
[21:22] <SpeedEvil> hmm
[21:28] <Laurenceb> http://www.copenhagensuborbitals.com/boosters.php
[21:30] <SpeedEvil> neat
[21:30] <SpeedEvil> going to sleep for a bit. Night. Looks like somerthing to read about.
[21:33] <W0OTM> howdy
[21:34] <W0OTM> for those who havn't seen it, here is the website for my first balloon launch http://www.w0otm.com/iHAB
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[21:56] <fsphil> not long to go now W0OTM
[22:14] <fsphil> ISS pass now, active
[22:14] <fsphil> 145.800
[22:19] <LazyLeopard> I hear it, just... ;)
[22:19] Action: LazyLeopard should set a reminder for next time...
[22:20] <fsphil> same here, just caught the tail end
[22:21] <fsphil> next pass is just before midnight -- might be too late for htem
[22:21] <fsphil> them
[22:21] <LazyLeopard> Yeah.
[22:22] <m1x10> 145.8 is ISS aprs ?
[22:22] <fsphil> it's voice, and sometimes sstv
[22:23] <fsphil> oh m1x10, the camera ran for about 8 hours -- the 4Gb memory card ran out first, battery was still fine :)
[22:24] <fsphil> that was it taking a picture every 10 seconds
[22:24] <m1x10> wow
[22:25] <m1x10> so u head for 8gb sd?
[22:25] <fsphil> yea, I started it at midnight. the memory card ran out at about 8:15am -- but I didn't get home from work until 15:00 and the camera was still on
[22:25] <fsphil> no need, the balloon will only be up for an hour or so
[22:26] <m1x10> yeah stupid question
[22:26] <m1x10> so lithiums are best choice
[22:26] <fsphil> definitely
[22:30] <earthshine> Anyone thought of making a 3D Scanner ?
[22:32] <earthshine> oops wrong thread
[22:32] <earthshine> Hi everyone anyway :)
[22:32] <LazyLeopard> fsphil: Next ISS pass at about 22:55 UTC might be worth a listen...
[22:32] <LazyLeopard> Hi Mike. ;)
[22:33] <fsphil> I'll be listening out for it LazyLeopard, if I can stay awake anyway :)
[22:33] <m1x10> fsphil, is ISS sending sstv frequenctly?
[22:34] <LazyLeopard> Same here. Might pull my two metres yagi out of its box...
[22:34] <fsphil> m1x10, not very -- they seem to do it for a few days each time, but there's a long gap between goes
[22:34] <fsphil> I'm now very tempted to get a 2m yagi :)
[22:34] <m1x10> ok
[22:34] <m1x10> yeah
[22:34] <fsphil> m1x10, last ssdv was about 5 weeks ago
[22:34] <m1x10> its in my plans too
[22:34] <fsphil> sstv even
[22:35] <fsphil> be cool if they did use ssdv :D
[22:35] <m1x10> :p
[22:45] <m1x10> no I try to find a 40euro canon cam on internet
[22:49] <fsphil> I got mine of ebay, about £25 each
[22:49] <m1x10> which one?
[22:49] <fsphil> A560
[22:52] <m1x10> its 25 gr heavier than mine a480
[22:56] <DanielRichman> Randomskk:
[22:57] <Randomskk> DanielRichman:
[22:57] <DanielRichman> Randomskk: shall I move griffonbot from cleric to nessie?
[22:57] <Randomskk> sure
[22:58] <DanielRichman> thank you for giving him a home ;)
[22:58] <Randomskk> np :P
[23:00] <jonsowman> Aw:)
[23:00] <fsphil> bah :p
[23:01] <Randomskk> that SA thread is pretty epic
[23:02] <Randomskk> I think the guy sums it up best with
[23:02] <Randomskk> "Oh, yeah, we mounted our home-made space rocket on a floating launch platform. The platform's a little small, but it's OK because we'll be at a safe distance watching the launch from this submarine we whipped up last year."
[23:02] <m1x10> gnite ppl
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[23:11] Action: LazyLeopard notes that trying to listen for ISS with a hand-held yagi might seem like a good idea, in theory, but it's absolutely p*ing down outside at present...
[23:13] <Randomskk> hmm, a pass here at 23:47
[23:13] <Randomskk> only getting up to 52 degrees altitude
[23:13] <Randomskk> not as good as the 22:13 which went to 13 altitude but hey
[23:13] <fsphil> the last pass for me didn't even show up on heavens-above, but I heard them just fine
[23:13] <Randomskk> I wonder if my whip could pick anything up
[23:13] <Randomskk> fsphil: was that on the visible passes or all passes list, though?
[23:14] <fsphil> all passes
[23:14] <Randomskk> I only get one pass listed on visible for today, but quite a few on 'all'
[23:14] <Randomskk> huh, weird. fair enough
[23:14] <Randomskk> you've got a nice big vertical to contend with though :P
[23:14] <fsphil> true :)
[23:14] <Randomskk> that said, what're the odds of them being awake and active at 23:47?
[23:14] <fsphil> this is what I'm wondering
[23:15] <fsphil> though it'll be 22:47 on the station
[23:15] <Randomskk> ah true
[23:15] <Randomskk> still quite late as these things go
[23:15] <Randomskk> and a sunday
[23:15] <LazyLeopard> It'd have to be on all-passes, I expect.
[23:16] <LazyLeopard> ...as it's doing well keeping out of the visible zone at the moment.
[23:17] <Randomskk> I guess I should just get the radio setup and ready to be powered, then it takes a second to turn it on
[23:17] <LazyLeopard> Aye.
[23:18] <Randomskk> heck, leave it on and squelched
[23:18] <LazyLeopard> ISS is unlikely to lift squelch. I think I saw it peaking at S1, maybe...
[23:19] <Randomskk> guess so
[23:19] <Randomskk> well, either way. I wish I had a proper psu for the thing, not hacking together the atx supply
[23:19] <LazyLeopard> Heh. ;)
[23:21] <fsphil> It's LOS, you shouldn't need big power
[23:21] <Randomskk> perfectly happy to just manage to receive something at this point
[23:21] <fsphil> yea I'm chuffed to finally hear it -- been on my list since I got the radio
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[23:35] Action: griffonbot is GriffonBot [http://github.com/ssb/griffonbot]
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[23:37] <Laurenceb> Randomskk: bottom side finished -> http://i.imgur.com/24HJy.png
[23:39] <Randomskk> sweet. looks busy
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[23:40] <griffonbot> Hello World
[23:40] <Laurenceb> #include <stdio.h>
[23:41] <DanielRichman> Randomskk: all done
[23:41] <Randomskk> DanielRichman: cool, nice.
[23:42] <Laurenceb> what script do you use to produce gerbers for seedstudio?
[23:42] <Randomskk> they have one on their website
[23:42] <Randomskk> the .cam file
[23:42] <Laurenceb> cool
[23:42] <Laurenceb> heh everyones asking you for help/advice :P
[23:43] <Laurenceb> the DSO nano v2 is sweet
[23:44] <Randomskk> oh, there's a v2?
[23:45] <Randomskk> I guess now I have my sexy tenma scope I don't need the little thing but it is pretty tiny and neat
[23:46] <Randomskk> two minutes until the ISS gets above the horizon
[23:51] <LazyLeopard> Oh? Heavens Above puts it over Netherlands or Germany right about now...
[23:51] <LazyLeopard> No activity on FM that I've heard, though.
[23:52] <SpeedEvil> Laurenceb: neat - you got one?
[23:52] <Laurenceb> no, might order... not sure if i can save on shipping if its shipped with the board
[23:52] <SpeedEvil> ah
[23:52] <Laurenceb> its just sooo cheap
[23:52] <Laurenceb> cant resist it
[23:52] <Randomskk> :( didn't hear anything
[23:53] <Randomskk> oh well, it's all set up now
[23:53] <Randomskk> will try again tomorrow
[23:53] <LazyLeopard> Still higher above the horizon than it was when I heard the last comments on the previous pass, but sounds like they've gone to sleep.
[23:54] <LazyLeopard> ...and sleep sounds like a good idea about now.
[23:55] <Randomskk> yea, I'm about to head off
[23:55] <Randomskk> silly work
[23:55] <Randomskk> one more week
[23:58] <Laurenceb> Randomskk: wheres the cam file?
[23:58] <Laurenceb> sorry cant see it on seeedstudio
[23:59] <fsphil> Nothing here either
[23:59] <Laurenceb> oh its in the .rar file nvm
[23:59] <Randomskk> hah
[00:00] --- Mon Aug 23 2010