highaltitude.log.20100926

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[00:15] <MrCraig> Laurenceb didn't wait long enough :-/ answer =IF(TYPE(B5)=1,"T","F")
[00:24] <MrCraig> far too late for a brit to still be up - nitey nites....
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[00:37] <fsphil> never too late :)
[00:41] <fsphil> (zzzzzzZZZ)
[00:57] <fsphil> sweet .. WB8ELK managed to receive balloon telemetry on 2m @ 20mW from over 810km away!
[01:08] <SpeedEvil> fun.
[01:47] <W0OTM> woo hoo, iHAB-2 Launch made front page of QRZ.COM
[01:47] <W0OTM> *launch announcement
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[02:25] <DagoRed> W0OTM: Nice
[02:26] <W0OTM> thx
[02:27] <DagoRed> At ISU we should be doing a high alitude flight here soon. Our latest launch got cancelled again :(
[02:28] <DagoRed> We should be breaking the high altitude record with this next flight.
[02:28] <SpeedEvil> :) :( :)
[02:29] <DagoRed> heh
[02:29] <DagoRed> Our APRS information will be available on #sscl when we do happend to do our next launch.
[02:29] <DagoRed> I'll hopefully have the bot ready for that >_>
[02:30] <SpeedEvil> ZP?
[02:32] <DagoRed> not yea
[02:32] <DagoRed> *yet
[02:33] <DagoRed> We were debating doing the record with a ZP but it didn't happend.
[02:33] <SpeedEvil> ah
[02:34] <DagoRed> Btw SpeedEvil, do you have any recomendations for a boost converter for our motor controller we're building. We would need around 30 volts to from a 24 volt source. Is it better to go with a larger inductor or work with higher frequencies?
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[02:35] <DagoRed> It's for that speed controller I mentioned earlier.
[02:35] <SpeedEvil> what power?
[02:36] <DagoRed> We're driving motors that ideally shouldn't go above 240 watts.
[02:36] <DagoRed> Batteries are two 12 volt sealed lead acids.
[02:36] <SpeedEvil> How many?
[02:37] <DagoRed> Mainly two drive motors. We just need enough to trip some n-channel mosfets on the positive side of the h-bridges.
[02:37] <SpeedEvil> Sorry - how many motors at 240w
[02:37] <DagoRed> *need enough voltage
[02:37] <DagoRed> 2
[02:37] <DagoRed> It's for a tracked rover.
[02:37] <SpeedEvil> oh - so you just want the 30v for the driver - it doesn't need any current?
[02:38] <SpeedEvil> There are charge pump chips.
[02:38] <SpeedEvil> And also there are MOSFET bridge driver chips with integrated charge pumps
[02:39] <SpeedEvil> irf.com - IIRC have some. Unfortunately, my internet is being silly, and is not letting me open stuff.
[02:39] <DagoRed> cool, I'll take a look.
[02:39] <DagoRed> Well, anything to get these voltage high enough so we can use all nchannel mosfets instead of p-channel
[02:40] <SpeedEvil> As a cheap hack - a 9v battery works. :)
[02:40] <DagoRed> tempting but no, with the temperatures and durations we're running we're not relying on a 9-volt.
[02:41] <DagoRed> I'm just curious if it's better from a design perspective to use higher frequencies or a larger inductor for the boost converter.
[02:41] <SpeedEvil> Argh - still not loading. Going to sleep. Good luck!
[02:41] <DagoRed> thanks, night
[02:42] <W0OTM> DagoRed: thanks
[02:43] <W0OTM> im looking for 2 things. 1 - a light weight repeater controller 2 - a light weight video camera (4hrs worth of video)(
[02:44] <DagoRed> W0OTM: We have those both in our balloons.
[02:44] Action: DagoRed finds pic
[02:44] <W0OTM> thx
[02:45] <DagoRed> For the APRS stuff, we use an open tracker
[02:45] <DagoRed> For an actual repeater on the balloon we use a friendcom.
[02:45] <DagoRed> For video, we use any digital camera and use a CF card to record.
[02:46] <DagoRed> http://www.youtube.com/watch?v=DsRsLfa6xUM
[02:47] <DagoRed> W0OTM: that should help
[02:48] <W0OTM> DagoRed: watching, thanks
[02:49] <DagoRed> If you have more questions, ask in #sscl because the balloons aren't exactly my specialty.
[02:50] <DagoRed> Or go to www.sscl.iastate.edu
[03:01] <W0OTM> DagoRed: how do you power the digital camera?
[03:01] <W0OTM> DagoRed: I wrote a CHDK script for recording video in 30min chunks
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[03:05] <DagoRed> W0OTM: Batteries on board our payloads. Btw, you don't happen to be one of those stratostar balloon groups at all?
[03:06] <W0OTM> DagoRed: I can't get my powershot to accept external powersource
[03:07] <DagoRed> Hmm.. they might be doing something with resistance on it then. Have you tried tapping directly into the battery terminals?
[03:08] <DagoRed> that should work W0OTM
[03:08] <W0OTM> DagoRed: that was going to be my next step
[03:09] <W0OTM> DagoRed: that will be my winter project
[03:11] <DagoRed> W0OTM: If it's a winter project, I may suggest building a switching voltage regulator over a linear voltage regulator. Given the conditions, you want to be efficient with power.
[03:13] <W0OTM> gotcha
[03:13] <W0OTM> im going to make a repeater controller out of a Basic 2 stamp
[03:14] <W0OTM> super lightweight, and low power
[03:14] <DagoRed> .... avoid basic stamps
[03:14] <DagoRed> They aren't worth the cost.
[03:14] <W0OTM> DagoRed: why?
[03:14] <W0OTM> DagoRed: I have done alot with Basic stamps
[03:14] <DagoRed> At least go arduino, but if you're competent I would just stick with a straight atmel and be happy.
[03:15] <DagoRed> The cost overhead for a basic stamp is horrible.
[03:15] <W0OTM> only if cost is a concern :)
[03:15] <W0OTM> they are minimalistic, perfect for my needs
[03:16] <DagoRed> Ok then, but if you're board this winter try Atmels.
[03:16] <DagoRed> Stupidly simple.
[03:17] <W0OTM> DagoRed: I will, maybe ill learn something new
[03:17] <DagoRed> You're in Iowa, it's going to be a HORRIBLE winter.
[03:18] <DagoRed> You might as well have smothing fun to do on cold days.
[03:18] <DagoRed> I have plenty of code for the Atmels if you're interested.
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[04:14] <DagoRed> W0OTM: TED is coming to Des Moines
[04:21] <Darkside> hmm
[04:21] <Darkside> i think i might try and port TinyGPS to the XMega
[04:21] <Darkside> easier than writing my own PUBX parser..
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[04:49] Nick change: nv1k -> madEngineer
[05:13] <DagoRed> madEngineer: http://forums.qrz.com/showthread.php?t=265431
[06:00] <Darkside> well this is fun
[06:01] <Darkside> i'm seriously hacking up juxta's code to make it work on my XPlain board :P
[06:11] <DagoRed> XPlain board?
[06:19] <Darkside> atmel xmega
[06:19] <Darkside> http://www.robertharrison.org/listen/view.php
[06:19] <Darkside> lol
[06:19] <Darkside> all my shit is at the bottom
[06:20] <DagoRed> is this some type of APRS thing?
[06:20] <Darkside> nah
[06:20] <Darkside> this is the raw data from the dl-fldigi clients
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[06:22] <Darkside> it would be even more useful if my gps unit would get lock..
[06:22] <madEngineer> runing domino?
[06:22] <Darkside> not at the moment
[06:22] Nick change: madEngineer -> nv1k
[06:22] <Darkside> i can switch to domino very easily tho
[06:22] <nv1k> which mode were you running?
[06:22] <Darkside> 300 baud RTTY
[06:25] <Darkside> i really need to clean up my code tho..
[06:25] <nv1k> heh
[06:26] <Darkside> anyone know how to get the thingo up in dl-fldigi that shows ytou the data it has extracted?
[06:26] <Darkside> and if it meets checksum, etc
[06:27] <DagoRed> nope
[06:27] <nv1k> i have done it before, but can't remember how
[06:27] <nv1k> and no fl-digi on this computer
[06:47] <Darkside> bah, dl-fldigi wont compile
[06:47] <Darkside> something about curl
[06:47] <Darkside> anyone have a recent OSX compile?
[06:48] <nv1k> ewww
[06:48] <nv1k> lol
[06:49] <Darkside> hey...
[06:49] <Darkside> /opt/local/include/curl/curlrules.h:143: error: size of array __curl_rule_01__ is negative
[06:49] <Darkside> yay....
[06:50] <DagoRed> osx quetions?
[06:50] <Darkside> i need a dl-fldigi build for OSC
[06:50] <Darkside> OSX*
[06:50] <Darkside> since i'm having compile issues
[06:50] <DagoRed> get me a link
[06:50] Action: DagoRed making a pit stop, will brb
[06:51] <Darkside> DagoRed: http://code.google.com/p/dl-fldigi/
[06:55] <DagoRed> downloading
[06:56] <DagoRed> which one?
[06:56] <DagoRed> the dmg?
[06:56] <Darkside> nah
[06:56] <Darkside> i mean i need a compile
[06:56] <Darkside> http://github.com/jamescoxon/dl-fldigi
[06:56] <Darkside> theres the source
[06:56] <DagoRed> ugh... I don't have git installed
[06:58] <DagoRed> installing git right now
[06:58] <Darkside> cool
[07:00] <DagoRed> I've never used git before
[07:00] <DagoRed> only hg and svn
[07:00] <DagoRed> what's the syntax
[07:01] <DagoRed> ?
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[07:06] <Darkside> dunno
[07:07] <Darkside> i forget now
[07:07] <Darkside> git clone url i think
[07:08] <DagoRed> not working
[07:08] <DagoRed> tried that
[07:09] <DagoRed> oh well, I'm working HAM stuff right anyway
[07:10] <nv1k> DagoRed: there is a tar and zip source download
[07:10] <DagoRed> can't find it
[07:10] <DagoRed> wasn't looking hard either
[07:10] <nv1k> top right corner
[07:10] <nv1k> of the root page
[07:11] <DagoRed> http://github.com/jamescoxon/dl-fldigi/downloads
[07:11] <nv1k> right under the Search bar
[07:11] <nv1k> a button that says download source
[07:14] <DagoRed> extracting
[07:15] <DagoRed> make won't even run for me
[07:16] <DagoRed> weird
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[07:44] <m1x10> hi !
[07:44] <Darkside> hey m1x10
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[08:11] <jcoxon> hey darkside
[08:11] <jcoxon> get dl-fldigi to compile?
[08:13] <Darkside> nope
[08:13] <jcoxon> grab the git source
[08:13] <Darkside> i have
[08:13] <Darkside> i'm getting problems with curl
[08:13] <Darkside> probably because o the version in macports
[08:13] <jcoxon> oh yes
[08:14] <jcoxon> do you just want a binary?
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[08:14] <Darkside> for OSX, yes :P
[08:14] <Darkside> or an app bundle
[08:21] <jcoxon> http://www.pegasushabproject.org.uk/misc/dl-fldigi-3.20.23.dmg
[08:21] <jcoxon> thats the latest latest
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[08:26] <Darkside> coooool
[08:28] <jcoxon> does it work?
[08:32] #highaltitude: mode change '+o jcoxon' by ChanServ!ChanServ@services.
[08:32] Topic changed on #highaltitude by jcoxon!jcoxon@host-87-74-94-72.dslgb.com: Welcome to #highaltitude - discuss anything to do with high altitude projects (balloons, gliders, etc) www.ukhas.org.uk,
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[09:04] <Darkside> hey juxta|console
[09:05] <juxta|console> hey Darkside
[09:05] <Darkside> i performed some almighty hacks to your code
[09:05] <juxta|console> how's things?
[09:05] <Darkside> but i have a working thingo now
[09:05] <Darkside> for certain definitions of 'working'
[09:05] <juxta|console> oh sweet! :)
[09:05] <Darkside> the GPS hasnt got a bloody lock yet, so i cant test that
[09:05] <Darkside> but i made TinyGPS (your version) work on the xmega
[09:05] <Darkside> problem is i'm now getting a horrible buzzing on the output
[09:06] <Darkside> i.e. when receiving at HF frequencies
[09:06] <juxta|console> hmm, that's odd
[09:07] <juxta|console> as in feeding into your amp?
[09:07] <Darkside> yeah
[09:07] <Darkside> im trying to work out whats going on now
[09:09] <Darkside> can't hear it when i set the AD9835 to audio rang
[09:09] <Darkside> but i hear it at HF...
[09:10] <Darkside> the weirdest thing is, its still there when i unplug the xmega
[09:10] <juxta|console> wow, that's a bit odd
[09:10] <Darkside> so its either something in the AD9835, or something in the power supply - but there's no noise on teh voltage lines
[09:10] <Darkside> i've checked it out on a scope, plug i'm running it off a battery
[09:11] <juxta|console> yeah I was going to say maybe something on the supply, but if it's not there, that's weird
[09:11] <Darkside> yup
[09:11] <juxta|console> so when does it happen - when the xmega is plugged in and running the code?
[09:11] <juxta|console> or just always now?
[09:11] <Darkside> always, when its running at RF frequencies
[09:12] <juxta|console> argh how annoying :(
[09:12] <Darkside> yup
[09:16] <Darkside> http://filebin.ca/obhsxf/buzzing_output.mp3
[09:20] <juxta|console> hmm that is painful
[09:22] <Darkside> yep
[09:22] <Darkside> the rest of the code is working
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[09:25] <Darkside> FAILED: Field count failed expecting 0 fields received 1 fields
[09:25] <Darkside> hmm why do i get that on http://robertharrison.org/listen/listen.php
[09:25] <jonsowman> Darkside: that page needs something to be POST'ed to it
[09:25] <jonsowman> what are you trying to do?
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[09:26] <Darkside> view all the data
[09:26] <jonsowman> http://robertharrison.org/listen/view.php
[09:26] <Darkside> :P
[09:26] <jonsowman> http://robertharrison.org/listen/view.php?reg=/DARKSIDE/
[09:27] <jonsowman> if you want to filter it for only your stuff
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[09:27] <Hiena> ' mornng!
[09:28] <Darkside> thanks jonsowman
[09:28] <jonsowman> np :)
[09:30] <Darkside> is hte callsign counted as a field
[09:30] <Darkside> i.e. $$field1,field2,field3*0000
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[09:31] <jonsowman> yes
[09:32] <jcoxon> darkside you need an xml i guess
[09:32] <jonsowman> morning jcoxon
[09:33] <Darkside> jcoxon: hmm i guess
[09:40] <jcoxon> what format do you want?
[09:40] <jcoxon> if you give me an example string i'll make one asap
[09:41] <juxta|console> Darkside: you have some of my telemetry data logged still, right?
[09:41] <Darkside> yeah juxta|console
[09:41] <Darkside> all of horus 7's
[09:41] <juxta|console> if you want to compare with the xml file:
[09:41] <Darkside> i havent added temp sensors yet to mine
[09:41] <juxta|console> http://robertharrison.org/listen/horus.xml
[09:41] <Darkside> and i've found horus's xml file :P
[09:42] <juxta|console> cool :)
[09:42] <Darkside> also juxta|console how did you gt the cool thin gup the top that showed all the decoded data?
[09:42] <jcoxon> Darkside, you need to run the --hab version
[09:42] <Darkside> oh ok
[09:42] <jcoxon> on osx i've added an applescript link
[09:42] <jcoxon> dl-fldigiHAB
[09:42] <Darkside> yep i see :)
[09:43] <jcoxon> just need to copy it into applications with dl-fldigi
[09:43] <Darkside> where re the XML files stored?
[09:43] <jcoxon> server
[09:43] <jcoxon> shall i clone horus for you
[09:43] <Darkside> hang on
[09:43] <jcoxon> and change it to darkside?
[09:43] <Darkside> ill make a format
[09:44] <Darkside> $$DARKSIDE,count,time,lat,long,altitude,sats,batt_voltage*checksum
[09:44] <jcoxon> rtty?
[09:45] <juxta|console> might be worth having sats and bat voltage in the extra_data field
[09:45] <juxta|console> so ; separated
[09:45] <Darkside> 300 baud, 425 shift, 8-bit ascii no parity, 1 stop bit
[09:45] <Darkside> juxta|console: so what do i do on my end for that?
[09:45] <jcoxon> keep the seperate
[09:45] <jcoxon> them *
[09:46] <jcoxon> as sats is a valid field
[09:46] <juxta|console> oh right
[09:46] <juxta|console> okay
[09:46] <jcoxon> well its what i do with atlas
[09:46] <Darkside> for frequency put 7.190.000
[09:46] <Darkside> USB
[09:46] <jcoxon> Darkside, i can add domino as well if you want
[09:47] <Darkside> can you have multiple TX typeS?
[09:47] <Darkside> if so, add DominoEX8
[09:47] <jcoxon> yes
[09:47] <Darkside> no FEC
[09:48] <jcoxon> yup
[09:48] <jcoxon> done
[09:48] <jcoxon> reload dl-fldigi
[09:48] <jcoxon> and select darkside
[09:48] <Darkside> ok
[09:48] <jcoxon> might need some adjustment later
[09:49] <jcoxon> but i have to go for lunch
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[09:49] <Darkside> hmm
[09:49] <Darkside> i dont get anything in the flight dropdown box :/
[09:50] <Darkside> even after redownloading the data
[09:50] <fsphil> nothing at all?
[09:50] <Darkside> nope
[09:50] <fsphil> ooh arr
[09:52] <fsphil> are you running in a console? anything interesting in the text when you click the redownload buttion?
[09:52] <fsphil> -i
[09:52] <Darkside> not running in a consol
[09:52] <Darkside> will try that
[09:53] <Darkside> <p>The requested URL /listen/listen.phplisten.phplisten.phplisten.test.php was not found on this server.</p>
[09:53] <Darkside> lolwtf
[09:54] <fsphil> eep
[09:54] <Darkside> yup
[09:54] <fsphil> what's in the 'Server' box in the conf?
[09:55] <Darkside> problsm solvered
[09:55] <Darkside> dunno how i screwed that up
[09:56] <fsphil> possibly a bug in there somewhere
[09:56] <fsphil> a string not being cleared properly
[09:56] <Darkside> lol this is cool
[09:56] <Darkside> like, really cool
[09:57] <Darkside> wicked
[09:57] <Darkside> now you all know my home location :/
[09:58] <Darkside> ah well
[09:58] <fsphil> woo! party at Darksides place :)
[09:58] <Darkside> lol
[09:58] <Darkside> yes, you should all come to australia
[09:58] <jonsowman> i wish :(
[09:58] <Darkside> still - w00 its working
[09:58] <fsphil> yea
[09:58] <Darkside> apart from the RF issues..
[09:58] <fsphil> though I'm afraid of spiders ....
[09:58] <Darkside> lol
[09:58] <Darkside> red back, funnelweb, blue ringed octopus
[09:59] <Darkside> taipan, tiger snake, and a box jellyfish
[09:59] <jonsowman> chase_dog ?
[09:59] <Darkside> big shark, just waiting for you to swimming, on bondi beach
[09:59] <Darkside> come to australia!
[09:59] <Darkside> you might accidentally get killed
[09:59] <fsphil> jonsowman, oh that's me, ignore that - just playing with the new gps module
[09:59] <jonsowman> ah okay
[10:00] <Darkside> http://www.youtube.com/watch?v=eNEeq5qGh8I
[10:00] <juxta|console> what module have you got Darkside?
[10:00] <Darkside> juxta|console: uhmmmmm
[10:00] <Darkside> ill get a link
[10:00] <Darkside> http://www.sparkfun.com/commerce/product_info.php?products_id=9566
[10:01] <Darkside> its not in altitude mode
[10:01] <Darkside> haven't ported over the sendUBX stuff yet
[10:01] <fsphil> haha, great tune
[10:03] <juxta|console> pfft they left out brown snakes
[10:03] <juxta|console> ;p
[10:03] <Darkside> haha
[10:03] <Darkside> well, i'll have to sort out the buzzing problem at uni, where i can get expert help :P
[10:04] <Darkside> can grab me a RF engineer for half a day, and say 'HELP ME'
[10:04] <fsphil> the buzzing! make it stops!
[10:05] <Darkside> yup
[10:05] <fsphil> so you're using 300 baud on HF? that's neat -- will be interesting to see the range
[10:05] <Darkside> yeah
[10:05] <Darkside> i need to do some testing with it before it gets flown..
[10:05] <Darkside> if i have to i'll switch to dominoEX8
[10:05] <Darkside> which is a shit-ton more reliable, just at much less throughput
[10:06] <fsphil> far less yea
[10:06] <Darkside> i could try dominoEX22, but i've noticed timing problems with that
[10:06] <juxta|console> we'll still have uhf telemtry too I would say Darkside, so not the end of the world if we loose the HF :)
[10:06] <Darkside> yeah, but i'd like it to work :P
[10:06] <fsphil> I hacked fldigi to make an even faster dominoex mode, though it's never been tested on air
[10:06] <juxta|console> hehe of course
[10:06] <Darkside> it would look kind of bad if UHF works and HF doesnt :/
[10:07] <juxta|console> why not try a lower baud rate Darkside? maybe cycle through different rates?
[10:07] <Darkside> are you flying the repeater on the next launch? my dad wants to know
[10:07] <juxta|console> no, not for public use
[10:07] <Darkside> ok
[10:07] <juxta|console> we'll probably fly one for chase car comms
[10:07] <juxta|console> but not a public one at this stage
[10:08] <Darkside> i'd like to try that dodgy UHF repeater set up sometime :P
[10:08] <juxta|console> we'll do a crossband talk through soon
[10:08] <Darkside> we managed to get it to work, but only with separate power supplies for each UHF handheld :P
[10:08] <Darkside> OOOOOOOOOH THATS an idea
[10:08] <Darkside> oh man
[10:08] <juxta|console> heh, i can imagine if we had a range of 700km on UHF CB we'd get some erm *lovely* types ;p
[10:09] <Darkside> i have a 5W UHF module
[10:09] <fsphil> haha
[10:09] <fsphil> many people down there still use CB? it's fairly dead here now
[10:09] <Darkside> FUUUUUU it doesnt have 22 and 23 in it..
[10:09] <juxta|console> people who can't be bothered getting their ham radio licenses
[10:09] <juxta|console> plus dodgy types and shady people using it for business uses
[10:10] <Darkside> yup
[10:10] <juxta|console> it's really not policed
[10:10] <Darkside> aaaaanyway, i could easily set up a hackish 5W UHF telemetry system :P
[10:10] <juxta|console> haha
[10:10] <juxta|console> are you even allowed to use CB for data?
[10:10] <Darkside> would be useful if this module goes down to 70cm, but i dont think it does
[10:10] <Darkside> yeah you are
[10:10] <fsphil> you'd get 2400 baud with that easily ;)
[10:10] <juxta|console> righto
[10:10] <Darkside> channels 22 and 23 are designated for data use
[10:10] <juxta|console> I don't know if i'd be too inclined to fly anything on CB though to be honest
[10:11] <juxta|console> it's easy enough to use ham frequencies for whatever we want to do
[10:11] <Darkside> you use a channel which isnt used much
[10:11] <Darkside> and it will overpower anyone else using the channel
[10:11] <juxta|console> yeah
[10:11] <juxta|console> exactly
[10:11] <Darkside> at 5W, it would be good for getting images down
[10:11] <juxta|console> I dont want to stop anybody else from using a channel within a 1500km diameter
[10:11] <Darkside> hahahahaha
[10:11] <Darkside> then use 22 or 23, since you arent allowed to use voice on them anyway
[10:12] <Darkside> or try and get this module working at 70cm - it might work at the upper end of the band
[10:12] <juxta|console> we could just do UHF ham freqs with as much as we need
[10:12] <juxta|console> as much power* as we need
[10:12] <Darkside> http://www.maxon.com.au/products_SD125_overview.php
[10:13] <Darkside> aww crap, it wont do 70cm at all, it only does 470-490MHz
[10:15] <Darkside> hmm, it has channels 25 and 40 programmed into it >_>
[10:15] <Darkside> could do some nasty things with that...
[10:28] <fsphil> what's your bandwidth? could do a nice low power dvb stream :)
[10:30] <Darkside> lol
[10:30] <Darkside> 25KHz
[10:31] <Darkside> and FM
[10:31] <fsphil> hmm, maybe not then :)
[10:31] <Darkside> could send SSTV over it..
[10:31] <Darkside> anyway, back in a bit - food time
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[12:10] <Darkside> hmm
[12:10] <Darkside> juxta|console: i need to get some DS18B20s...
[12:10] <Darkside> or something like that
[12:10] <Darkside> gotta add some temp sensors to my prototype
[12:11] <Darkside> also, whats the current draw of your nut board?
[12:12] <juxta|console> Darkside: haven't measured in a while, probably 30-50mA I guess
[12:13] <Darkside> >_>
[12:13] <Darkside> jeez
[12:13] <Darkside> yeah i think i might see about not using the xplain board for the horus launch then
[12:13] <juxta|console> why's that?
[12:13] <Darkside> since that draws 100mA by itself...
[12:13] <Darkside> since it has all sorts of crap attached to it
[12:13] <Darkside> on the other hand, I can just do a run-time test
[12:14] <juxta|console> that's no issue
[12:14] <Darkside> thats a point - what batteries should I be using for this
[12:14] <juxta|console> we'd put you on your own supply anyway :P
[12:14] <Darkside> i'm thinking of getting a lithium pack or something for it
[12:14] <juxta|console> we use lithium primaries
[12:14] <Darkside> i was thinking a lithium polymer pack or something
[12:15] <Darkside> basically, I need 12V
[12:17] <m1x10> ping fsphil
[12:19] <juxta|console> lithium AA's will give you 1.5/cell, so you could use 8 of those, or maybe 4 or so and a boost converter
[12:19] <juxta|console> they're good for about 3Ah
[12:20] <DanielRichman> fsphil: I was thinking about trying superfast domex modes. Do you still have the hack to fldigi around?
[12:33] <Darkside> juxta|console: nice
[12:33] <Darkside> i was thinking maybe a few 18650 cells in series
[12:33] <Darkside> 3.7V each, thereabouts
[12:33] <SpeedEvil> cell protection is annoyin
[12:33] <SpeedEvil> gg
[12:33] <Darkside> heh
[12:43] <fsphil> DanielRichman, yea one sec I'll dig it out
[12:43] <fsphil> hullo m1x10
[12:47] <m1x10> hey fsphil, hows going?
[12:47] <m1x10> I was wondering what was that little cam u had on your payload?
[12:47] <m1x10> doing sstv with it..
[12:48] <juxta|console> Darkside: yeah - lithium primaries are cheap, light & don't need any protection trickery though :)
[12:49] <Darkside> true
[12:49] <Darkside> i might go out and get a pile of them to play with
[12:49] <Darkside> how much are they?
[12:49] <juxta|console> plus they handle the cold really well
[12:49] <Darkside> yeah... this is the other thing i need to do
[12:49] <Darkside> i need to put the AD9835 in a vat of dry ice
[12:50] <juxta|console> if you buy them in the stores here they're about $15-20 for a 4 pack of energizer ones - woolies have recently released their own home brand ones i've heard, you might be able to scam those a bit cheaper given your 'connections' ;p
[12:50] <Darkside> haha
[12:50] <Darkside> 5% cheaper...
[12:50] <juxta|console> but if you buy the energizer ones on ebay, they're really cheap - i bought a big bunch of 25 of them for 12 bucks
[12:51] <Darkside> oh, cool
[12:51] <Darkside> ok
[12:51] <fsphil> m1x10, it's a C328 from sparkfun. it sends jpeg images over serial to the avr
[12:51] <fsphil> I'm not sure sparkfun have any stock left though
[12:51] <juxta|console> they didnt come in packaging - I was a bit sus... they seem fine after testing though
[12:51] <Darkside> otherwise i was just going to get a normal lithium polymer cell or something
[12:51] <Darkside> since the ones i'v ebeen using on my glider dont have protection circuitry
[12:51] <Darkside> if you short the terminals, bad things happen :/
[12:52] <juxta|console> in the past though I have bought them on ebay in retail packs of 4 for $10 though
[12:52] <DanielRichman> fsphil: cool
[12:52] <Darkside> fsphil: it outputtng jpeg will suck for doing sstv tho
[12:52] <juxta|console> yeah, usually with the big lipos the heat is enough to melt the solder on the tabs and the wires come off before they explode ;p
[12:52] <Darkside> means you'll need to do jpeg decoding on the avr
[12:52] <Darkside> lool juxta|console
[12:52] <fsphil> DanielRichman, http://www.sanslogic.co.uk/files/dl-fldigi-dominoexx.patch
[12:52] <m1x10> yes fsphil
[12:52] <DanielRichman> fsphil: thank you :)
[12:52] <m1x10> no stock
[12:52] <fsphil> yea unless you can decode the jpeg you've no hope :)
[12:53] <fsphil> that's one of the reasons I'm sending the image digitally over rtty
[12:53] <m1x10> but i discovered something and want your opinion
[12:53] <DanielRichman> haha dominoexx
[12:53] <m1x10> http://www.linksprite.com/product/showproduct.php?lang=en&id=15
[12:53] <fsphil> yea :) I've only tested it from machine to machine
[12:53] <m1x10> JPEG Color Camera Serial UART Interface
[12:54] <Darkside> fsphil: what symbol rate does it use?
[12:54] <fsphil> m1x10, that looks to be very similar
[12:54] <fsphil> I'm not actually sure Darkside
[12:54] <fsphil> brb! food
[12:54] <Darkside> fsphil: hahahaha
[12:55] <Darkside> put it in the next release of dl-fldigi
[12:55] <Darkside> i'd be happy to do some HF testing of it
[12:55] <DanielRichman> might be able to flight test it on alien
[12:55] <m1x10> fsphil, I hear some user comments that saying its difficult to use a controller to transfer the image from the camera chip. is that true? with what avr you tried?
[12:56] <m1x10> oh, have a nice launch :)
[12:56] <fsphil> haha I'd love to see that being used
[12:56] <fsphil> it sounds mad
[12:57] <fsphil> m1x10, the C328 is quite ... temperamental. you do anything wrong and it stops working. it's possible this is the same controller
[12:57] <fsphil> I'm using it on an atmega over one of the hardware uarts
[12:58] <m1x10> nice
[12:58] <fsphil> it has two hardware uarts which is nice
[12:58] <m1x10> 168?
[12:58] <fsphil> 644P
[12:58] <m1x10> ah lol
[12:58] <fsphil> I need the extra memory
[12:58] <fsphil> I think
[12:58] <m1x10> im waiting this from a sponsor :P
[12:58] <Darkside> fsphil: its 4 times as fast as dominoEX22
[12:59] <Darkside> so, about an 80Hz symbol rate
[12:59] <Darkside> thats gonna have a wide bandwidth...
[12:59] <Darkside> possibly too wide for HF use...
[13:00] <Darkside> i'd like to try tho :)
[13:00] <m1x10> fsphil, I think they dont have the same chip
[13:01] <m1x10> http://www.sparkfun.com/commerce/product_info.php?products_id=9334
[13:03] <fsphil> Darkside, I wonder if it could be narrowed a bit?
[13:03] <Darkside> juxta|console: at what rate did horus 6 and 7 hit the groind?
[13:03] <Darkside> fsphil: maybe..
[13:03] <Darkside> ground*
[13:03] <Darkside> i'm e-mailing my supervisor about the launch
[13:03] <Darkside> he'll probably track it too :P
[13:09] <juxta|console> pretty soft
[13:09] <juxta|console> 5m/s or slower
[13:09] <The-Compiler> hmm, is there any RSS feed/iCal/vCal/... about new launches?
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[13:20] <juxta|console> not really, no
[13:29] <The-Compiler> I keep missing launches. :(
[13:32] <juxta|console> there's a mailing list The-Compiler: http://groups.google.com/group/ukhas
[13:32] <juxta|console> UK launches tend to be announced there
[13:32] <juxta|console> (if you're in the UK that is)
[13:33] <The-Compiler> well I'm not in the UK, but many launches can be followed online, so that's what I'm doing normally ;)
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[13:44] <Upu> Did Icarus launch ? on Friday ?
[13:53] <juxta|console> where abouts are you The-Compiler?
[13:54] <The-Compiler> Switzerland
[13:54] <The-Compiler> there isn't really anything interesting happening here
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[14:05] <fsphil> I should hopefully launch in a few weeks, if the man from the CAA says yes - and I think he will this time
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[14:05] <The-Compiler> fsphil: I guess that'll be announced on the ML? :)
[14:06] <fsphil> definitely
[14:07] <The-Compiler> okay :>
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[15:34] <W0OTM> howdy
[15:34] <W0OTM> GM from Iowa
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[16:54] Action: Laurenceb is putting together a proper autopilot board BOM - got to £105 excluding VAT and delivery so far
[16:55] <Laurenceb> havent got all the fiddly passives on yet, but it shouldnt increase by more than a few pounds 0 looks like ~£110 ex vat for everything
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[17:04] <SpeedEvil> Expensive and cheap.
[17:04] <m1x10> Arduino uno :!
[17:04] <SpeedEvil> that's in ones I assume?
[17:18] <Laurenceb> yes
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[17:18] <Laurenceb> bbl
[17:18] <SpeedEvil> bbl
[17:19] <Laurenceb> almost half the cost is the gps and differential pressure sensor
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[18:17] <jcoxon> http://www.gordonbennett2010.com/tracking
[18:22] <DanielRichman> they're so polite: "IE6 users - sorry this webpage may not work for you."
[18:22] <DanielRichman> I wouldn't.
[18:24] <jcoxon> quite cool
[18:24] <jcoxon> intersting page on the trackers
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[18:32] <fsphil> wow, they've covered a lot of ground already
[18:34] <jcoxon> yeah
[18:34] <jcoxon> wonder what the logistics are like
[18:35] <jcoxon> on the note of long duration balloons i've updated the atlantichalo wiki a little - with a suggested plan/timeline:
[18:35] <jcoxon> http://spacenear.us/wiki/doku.php?id=status25092010
[18:37] <jcoxon> if people want to help out - just get in touch
[18:51] <fsphil> what needs done?
[18:51] <fsphil> (haven't read the page yet)
[18:51] <jcoxon> hehe
[18:52] <jcoxon> there is a list of jobs but i could expand it
[18:53] <jcoxon> fsphil, radiohalo will be a interesting launch
[18:53] <jcoxon> 70cm + HF (once out to sea)
[18:54] <jcoxon> will use identical strings on 70cm and HF (apart from callsign) but thought we could mod the listener server a little to treat them as the same
[18:54] <jcoxon> which would give us a continuous track on spacenear.us
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[19:05] <fsphil> why different callsigns?
[19:05] <jcoxon> cause for the HF we'll need a US callsign
[19:06] <jcoxon> (and also it would be good to distinguish the raw telem)
[19:07] <jcoxon> Steve has both a UK and US callsign
[19:09] <fsphil> ah yes, amateur band
[19:09] <fsphil> I'm so used to us using the license exempt stuff
[19:11] <fsphil> just reading up on radiohalo -- this will be a very cool flight
[19:12] <fsphil> is there any more info on the radio?
[19:12] <fsphil> HF radio that is
[19:18] <jcoxon> http://spacenear.us/wiki/doku.php#hf_radio
[19:19] <jcoxon> fsphil, so yeah we need as much help as possible really
[19:19] <jcoxon> need to grab an area and make it your own!
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[19:45] <fsphil> hehe, I wouldn't mind playing with the spot locator but i suspect that's something you'd need to do there
[19:46] <jcoxon> fsphil, actually thats been done by natrium
[19:47] <jcoxon> http://natrium42.com/projects/spot/
[19:48] <jcoxon> :-p
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[19:50] <jcoxon> some one will need to look into a method of terminating the flight
[19:51] <fsphil> yikes, he's going really in-depth
[19:51] <jcoxon> yup
[19:52] <W0OTM> howdy
[19:52] <jcoxon> hey W0OTM
[19:52] <W0OTM> whats new?
[19:52] <fsphil> ooh I did have an idea for a device to cut the cord
[19:52] <jcoxon> not too much
[19:52] <jcoxon> we'll need 2 independent systems
[19:53] <fsphil> I'll experiment a bit on that then
[19:53] <jcoxon> as we don't have the burst of a latex balloon
[19:54] <jcoxon> one idea is to have a central line up through the balloon - you cut the main line and it'll invert the balloon
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[19:56] <fsphil|eee> not enough just to cut the payload from the balloon?
[19:56] <jcoxon> not sure
[19:56] <jcoxon> needs more investigation
[19:58] <Upu> high power laser to burst balloon can never have enough lasers :)
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[20:07] <fsphil|eee> ooh put some of that really thin wire around the neck of the balloon, a small motor to constrict it and cut away the balloon -- should leave it with a big enough hole that it'll collapse
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[00:00] --- Mon Sep 27 2010