highaltitude.log.20100709

[00:02] <fsphil> definitely contain the right values
[00:02] <fsphil> but with the message code in there, s now == the right value
[00:03] <ms7821> interesting, I've just noticed that r29 in there
[00:03] <ms7821> which is the high byte of s
[00:03] <ms7821> well, 25 is
[00:03] <ms7821> but r25 is orred with r29
[00:03] <fsphil> hmm.. it isn't being set
[00:04] <ms7821> could it be a bug cause by pkg_len being uint8_t?
[00:04] <fsphil> just a guess, r24 is the lsb of s, with r25 being the msb?
[00:05] <fsphil> ooh
[00:05] <ms7821> yeah
[00:05] <ms7821> so the colouring doesn't realise that r29 matters?
[00:05] <fsphil> changed it to uint16_t .. flashing now
[00:06] <fsphil> hmpf, no difference
[00:06] <ms7821> asm?
[00:07] <fsphil> http://pastebin.com/HDF29xeK
[00:07] <fsphil> looks the same
[00:10] <ms7821> hmm so try setting s = 0 first, and then s |= rxbuf[2], s |= rxbuf[3] << 8;
[00:11] <ms7821> it's definitely assuming r29 is 0
[00:11] <fsphil> runs the same, disassembling now
[00:12] <fsphil> http://pastebin.com/AKBupwuw
[00:12] <ms7821> hah, same code
[00:12] <fsphil> pesky optimiser :)
[00:13] <ms7821> try s = rxbuf[3]; s<<=8; s+= rxbuf[2]?
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[00:14] <fsphil> haha, that might just trick it
[00:14] <ms7821> hmm, who knows?
[00:14] <fsphil> we will, shortly
[00:15] <fsphil> different code, same fail
[00:15] <fsphil> http://pastebin.com/1wXZRWyb
[00:16] <jnd> what's going on?
[00:16] <ms7821> can you grep for r29 in the whole code?
[00:16] <ms7821> see if it's being set anywhere
[00:16] <ms7821> it might be constant 0, but the hardware's interrupting it
[00:16] <jnd> there's also call to 0xac0 <c3_tx>
[00:17] <fsphil> grep output --> http://pastebin.com/RukGDm0E
[00:17] <ms7821> oh right, so it's definitely not constnat
[00:18] <fsphil> I can put some assembly into the program just before it to clear it?
[00:18] <ms7821> something is being naughty
[00:18] <ms7821> heh I guess
[00:20] <fsphil> or if I changed the type of s
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[00:21] <fsphil> okie, changing s to uint32_t and it's got he right answer
[00:21] <fsphil> the asm for that is http://pastebin.com/VshZVeX2
[00:23] <ms7821> haha, it's doing the right thing, now, as well
[00:23] <ms7821> it should have used r29, not r1
[00:24] <ms7821> nice bug
[00:24] <fsphil> very
[00:28] <fsphil> aarh, changed the s line back to what it was and it's happening again
[00:28] <fsphil> s = rxbuf[2] + (rxbuf[3] << 8) + 6;
[00:29] <fsphil> not entirely to do with the type of s then
[00:30] <ms7821> does c3_tx or tx_byte have any strange decorations?
[00:30] <ms7821> no, ignore that
[00:31] <ms7821> could you pastebin the full disassembly?
[00:34] <fsphil> http://pastebin.com/1dEGBekB
[00:34] <ms7821> woop
[00:34] <fsphil> this is with uint32_t s, and the s = line I pasted above
[00:35] <fsphil> it's a pretty big program
[00:36] <ms7821> wow just a sec
[00:37] <ms7821> it's optimised the +6 into the comparison for some reason
[00:38] Nick change: DaveyC -> DaveyC_AFK
[00:38] <ms7821> yup, r29's back
[00:39] <ms7821> maybe set s as volatile
[00:39] <ms7821> and add the [3] separately
[00:39] <ms7821> as it looks like it's the <<8 that's being confusing
[00:40] <fsphil> will try it volatile first
[00:40] <ms7821> or (perhaps) more correctly, define s as a union of a uint_16 and two uint_8s?
[00:40] <ms7821> though that's still a really hacky workaround
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[00:41] <fsphil> volatile s has the right answer
[00:42] <ms7821> I guess that's the easiest to undo as well
[00:42] <ms7821> once avr-gcc's fixed ;)
[00:42] <fsphil> indeed!
[00:42] <fsphil> it may already have been fixed, I'll have to check with the devs
[00:43] <fsphil> thank you for all your help on this! it's really appreciated
[00:43] <ms7821> no worries, and apologies for doubting you!
[00:43] <fsphil> hey I was doubting myself :)
[00:44] <fsphil> still failing on the second package, but I think that's just a plain ol' fashion coding error
[00:44] <ms7821> if you can package up the code somewhere, I'd be interested in trying to reproduce it on another version tomorrow
[00:45] <fsphil> aye good idea, i'll tar it up as it is right now - crude debugging code and all
[00:46] <ms7821> ooh I wonder if it's epiligue_restores that's buggy
[00:46] <fsphil> what's it do?
[00:47] <ms7821> it's common function entry code used by the *printf functions
[00:48] <ms7821> seems to be a context switch of some sort
[00:48] <fsphil> http://www.sanslogic.co.uk/files/hadie-bugz.tar.gz
[00:49] <ms7821> but it's not restoring r29, because I'm guessing that's a return value (along with r28)
[00:49] <fsphil> aaah, so the compiler assumes that the rest of the code is clearing up after itself properly
[00:50] <ms7821> possibly, if it's from a separate precompiled library (presumably the crt)
[00:50] <ms7821> s/crt/libc/
[00:51] <ms7821> so it's possible that removing the call to snprintf from tx_image will fix it...
[00:52] <fsphil> worth a try...
[00:53] <ms7821> actually, no, r29's already scrambled in the prolog to tx_image
[00:53] <fsphil> yes, that'd be right. I only added the snprintf's when it failed
[00:55] <jnd> btw Y pointer is r29:r28 and stack is on 0x3e:3d, status reg 0x3f (iirc)
[00:55] <fsphil> snprintf's removed, same issue. although I can't be sure
[00:55] <ms7821> r29 just shouldn't be used - looks a straight register colouring bug
[00:56] <ms7821> jnd: ahh, that would fit with the epilog code
[00:56] <jnd> also r1 is always zero, r31:r30 is Z pointer
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[00:58] <ms7821> so the actual bug is initialising Y to 0 at line 1180
[00:59] <ms7821> it only initialises r28, not r28:29
[01:01] <jnd> it does both in movw    r28, r26
[01:01] <jnd> its word instruction
[01:02] <jnd> which means it doesn't show in grep...
[01:02] <ms7821> in fact, I wonder if it's because they use an explicit "movw", assuming that's a double
[01:02] <ms7821> oohhh, movw is a word instruction?
[01:02] <jnd> that's the w
[01:02] <ms7821> yeah, I was just assuming word was byte
[01:03] <jnd> r29:r28 <- r27:r26
[01:05] <ms7821> right, so that's ruined my theory then
[01:06] <ms7821> fsphil: would you be able to provide a disassembly with volatile set on s?
[01:06] <fsphil> yes, one sec
[01:09] Action: ms7821 is reading the avr instruction set now
[01:09] <fsphil> http://pastebin.com/h56paNSN
[01:09] <fsphil> this version has volatile uint16_t s, and is giving the correct answer
[01:19] <ms7821> that one's also reading SP into Y
[01:22] <ms7821> so is Y trustworthy after an interrupt on the avr?
[01:24] <fsphil> the only interrupt I have is __vector16 in the asm file
[01:27] <fsphil> right, I need some sleep or I'll be all zombie like tomorrow at work :)
[01:28] <fsphil> I'll try disabling the interrupts around that function tomorrow, see if it changes anything
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[06:58] <jonsowman> natrium42: ping
[06:58] <natrium42> yo
[06:58] <jonsowman> could I ask a favour? :)
[06:58] <natrium42> sure, sup?
[06:59] <jonsowman> any chance of having the tracker display number of sats, and two temperatures, for the APEX payload?
[06:59] <juxta> hey natrium42: thanks a bunch for your help yesterday :)
[07:02] <natrium42> jonsowman, you can just use "data=Satellites=4;Temperature 1=35;Temperature 2=-5"
[07:02] <natrium42> juxta, sure thing, great launch!
[07:02] <jonsowman> in the custom field?
[07:03] <natrium42> no, that's for posting to tracker directly
[07:03] <natrium42> not sure about dl system
[07:04] <juxta> jonsowman: i think you might want to speak to Rob about it
[07:04] <jonsowman> okay - will do
[07:04] <natrium42> horus and ballast halo use ; separated values
[07:04] <jonsowman> right
[07:04] <jonsowman> we've got all discrete fields at the moment, comma delim'd
[07:04] <jonsowman> APEX,1081,20:47:38,5119.4786,-00012.2885,150,008,058,07,22.00,0.00,CEB,825,,,020101013,,*B8A5
[07:05] <juxta> that way the custom data field is a single entry, so we can change the contents of that without having to update the XML
[07:05] <natrium42> okay, i can just hardcode the field names as for horus
[07:05] <natrium42> so Sats, Temp1, Temp2?
[07:05] <jonsowman> sats, internal temp, external temp
[07:05] <jonsowman> please :)
[07:06] <juxta> natrium42: at the moment is the DL side of thing on one server and the tracker on another?
[07:06] <natrium42> jonsowman, actually, it will work now
[07:06] <natrium42> horus had the same format with extra fields
[07:07] <jonsowman> brilliant, thanks :) how do you test a packet direct to the tracker to test?
[07:07] <natrium42> juxta, yeah
[07:08] <natrium42> hmm, there is http://www.robertharrison.org/listen/test.php
[07:08] <juxta> hmm, would make sense to unify the two and have it so payloads can easily be edited etc
[07:08] <natrium42> not sure how it selects xml
[07:09] <juxta> natrium42: that page looks for 'callsign.xml'
[07:09] <juxta> whatever you enter
[07:09] <natrium42> ah, cool
[07:11] <juxta> natrium42: did you see the pics of the payload coming down?
[07:12] <natrium42> yeah, awesome
[07:12] <jonsowman> doesn't seem to be displaying sats/temps
[07:12] <jonsowman> :\
[07:12] <jonsowman> unless I'm doing it wrong
[07:12] <natrium42> does the XML have them?
[07:13] <jonsowman> it has fields
[07:14] <jonsowman> http://www.robertharrison.org/listen/apex.xml
[07:14] <jonsowman> do those fields need any more data in the xml?
[07:16] <earthshine> morning
[07:17] <juxta> morning earthshine
[07:17] <juxta> slash afternoon
[07:20] <natrium42> jonsowman, it's not being passed to spacenear.us server
[07:22] <jonsowman> hmm
[07:22] <jonsowman> interesting
[07:23] <jonsowman> i must dash off to work
[07:23] <jonsowman> shall continue examining it later - thanks for your help natrium42
[07:25] <natrium42> np
[07:25] <natrium42> good nite!
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[09:03] <jcoxon> morning
[09:03] #highaltitude: mode change '+o jcoxon' by ChanServ!ChanServ@services.
[09:03] Topic changed on #highaltitude by jcoxon!jcoxon@host86-161-48-239.range86-161.btcentralplus.com: Welcome to #highaltitude - discuss anything to do with high altitude projects (balloons, gliders, etc) www.ukhas.org.uk, BallastHalo 5 launch Sat 10/07/10 18:00UTC, long duration floater, http://spacenear.us/tracker/
[09:12] <juxta> hey jcoxon
[09:12] <juxta> launch pushed back? :(
[09:13] <jcoxon> yeah
[09:13] <jcoxon> need to go house hunting today
[09:13] <jcoxon> and its far to far to get from there to the launch site
[09:14] <jcoxon> juxta, http://maps.google.co.uk/maps?q=worthing
[09:14] <jcoxon> zeusbot needs a restart methinks
[09:15] <juxta> jcoxon: Worthing is the launch site?
[09:15] <juxta> or the house site? ;p
[09:15] <jcoxon> no thats where i'm living from august
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[09:16] <juxta> that does look like a bit of a drive from Cambridge
[09:16] <jcoxon> cambridge is far away
[09:16] <jcoxon> with london in between on a friday afternoon
[09:16] <jcoxon> so we pushed it back 24hrs and then we can have a relaxed setup
[09:16] <juxta> doesnt soon like a recipe for success
[09:17] <juxta> landing site ended up being almost 140km from launch yesterday
[09:17] <juxta> thankfully no cities in between
[09:17] <jcoxon> indeed
[09:17] <jcoxon> was a good launch
[09:17] <jcoxon> well coordinated
[09:18] <juxta> well, some cities would have been nice given that the person tasked with bringing food failed to deliver ;p
[09:18] <jcoxon> haha
[09:18] <jcoxon> well the flight plan for tomorrow is insane
[09:20] <fsphil> insane in a good way :)
[09:21] <jcoxon> well it basically needs to float for 2hrs or bye bye
[09:21] <jcoxon> and needs to float above 25km
[09:21] <jcoxon> the ballast tanks might actually come in useful
[09:22] <jcoxon> juxta, oh the radio is all nicely setup for you
[09:24] <jcoxon> http://pegasus4.no-ip.org/
[09:26] <juxta> aweoms jcoxon
[09:26] <juxta> awesome*, even
[09:26] <jcoxon> have a play
[09:26] <juxta> will do
[09:26] <jcoxon> will need to turn the volume up a bit
[09:27] <juxta> is it a dark room?
[09:27] <juxta> in* a dark room
[09:27] <fsphil> what's the url of the new predictor?
[09:27] <juxta> fsphil: http://www.hexoc.com/hab/predict/predict/
[09:27] <jcoxon> hmmm yts a bit dark now
[09:27] <fsphil> thanks
[09:28] <jcoxon> yeah i think i need a light source
[09:28] <juxta> jcoxon: is it possible to put the flash player at the bottom of the page?
[09:29] <jcoxon> lights are on now
[09:29] <jcoxon> yeah sure
[09:29] <jcoxon> was going to redesign the page quite a bit
[09:29] <juxta> much better with the lights on
[09:29] <jcoxon> yeah i can't assure the lights will be on
[09:29] <juxta> hm
[09:29] <jcoxon> so i'll add an led to turn on and off :-p
[09:30] <juxta> what about an LED or a torch?
[09:30] <juxta> cool cool
[09:30] <jcoxon> i'll turn something on for you to listen to
[09:30] <juxta> ok cool
[09:31] <jcoxon> 0.73
[09:31] <jcoxon> oops
[09:31] <jcoxon> 4.073
[09:31] <juxta> jcoxon: it might be worth having a up/down * 10 button or something
[09:32] <jcoxon> i could change the shift
[09:32] <jcoxon> so it does 10 at a time
[09:32] <juxta> otherwise tuning from 4.075 is going to take 30 clicks & reloads
[09:32] <jcoxon> but hte accuracy will be lost
[09:33] <juxta> maybe a 10x multiplier tickbox?
[09:33] <juxta> ooh I hear something
[09:34] <jcoxon> :-)
[09:35] <juxta> is the RV button gone in the new version of fldigi?
[09:35] <fsphil> haha: http://www.hexoc.com/hab/predict/predict/#!/uuid=c3af468d354529fdc31f5153243cb225ba3838b8
[09:36] <jcoxon> fsphil, eeek
[09:36] <fsphil> and I thought the scottish highlands was bad
[09:37] <jcoxon> juxta, i can't see one
[09:37] <jcoxon> you unable to decode?
[09:37] <juxta> jcoxon: decoding the data here :)
[09:37] <jcoxon> oh cool
[09:37] <jcoxon> its a new omni antenna for 2m and 70cm
[09:37] <jcoxon> which is placed as high outside as i can safely get it
[09:37] <jcoxon> however i'm not sure how good it'll be
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[09:38] <fsphil> if you've a good view north-west you should be able to hear my payload
[09:38] <rharrison> Morning all
[09:38] <rharrison> fsphil, you up in the air?
[09:38] <jcoxon> morning rob
[09:39] <fsphil> morning rharrison , not yet :)
[09:39] <fsphil> still a few weeks away
[09:39] <rharrison> Cool
[09:39] <fsphil> though if the wind doesn't calm down, maybe longer
[09:39] <rharrison> jcoxon, I see you are sysop today :)
[09:39] <jcoxon> changing topics
[09:39] <jcoxon> thats all
[09:39] #highaltitude: mode change '-o jcoxon' by ChanServ!ChanServ@services.
[09:39] <juxta> hey Rob
[09:40] <rharrison> fsphil, well TBH we have had quite a good run of HAB weather for a while
[09:40] <fsphil> that's very true
[09:40] <rharrison> Hey juxta Nice pics. You live in a beatutiful country
[09:41] <juxta> it's nice when it's green!
[09:41] <rharrison> Sill waiting to get CAA permision on a local launch site :(
[09:42] <juxta> jcoxon: decoding great here, but you're right, really do need the accuracy of the smaller tuning steps
[09:43] <jcoxon> juxta, i'll see what i can do :-p
[09:43] <fsphil> what's the red box showing, on the predictor?
[09:43] <jcoxon> once you've got the signal i reckon you'll only need the small steps
[09:43] <rharrison> jcoxon, is'nt the jumps dependent on the radio
[09:43] <juxta> fsphil: the area for which wind data will be downloaded
[09:44] <juxta> jcoxon: yeah, I agree
[09:44] <jcoxon> rharrison, oh yes the ft790r has a 'step' button
[09:44] <rharrison> fsphil, are you going to web interface the ft817nd
[09:44] <jcoxon> to vary the change
[09:44] <jcoxon> rharrison, for the ft817 you could use globaltuners
[09:44] <jcoxon> they have predone software
[09:44] <rharrison> Perfect
[09:44] <rharrison> :)
[09:44] <jcoxon> thats what i use to track trans-a
[09:45] <rharrison> Interfaced via the CAT cabele I guess
[09:45] <jcoxon> yes
[09:45] <jcoxon> cat and an audio cable
[09:45] <jcoxon> basically you just share your radio and they do the rest
[09:45] <fsphil> rharrison, I was yea but I'll have to have a look at globaltuners furst :)
[09:45] <fsphil> first too
[09:45] <jcoxon> but you can take it on and off line when you want
[09:45] <rharrison> hehe
[09:45] <jcoxon> to use it yourself
[09:47] <jcoxon> juxta, if you use it decode remember to move your location position or you'll be making a rather large green line from the uk to australia
[09:47] <jcoxon> !
[09:47] <juxta> hehe
[09:47] <juxta> yep, I was just thinking of that
[09:47] <juxta> what shall i set the coords to?
[09:48] <rharrison> jcoxon, it may be good to provide some rough coords fro the station
[09:48] <rharrison> on the web page
[09:49] <jcoxon> 51.497 -0.0495
[09:49] <jcoxon> yeah
[09:49] <jcoxon> i was going to try and redesign it
[09:49] <rharrison> I'm going to do something for the ft817nd
[09:49] <jcoxon> i think globaltuners is a good one
[09:50] <rharrison> Quite a few of us have these now and that globaltuners looks a bit big for my liking
[09:50] <jcoxon> well it means sharing it more with the radio community
[09:50] <jcoxon> but they setup does work
[09:50] <rharrison> True
[09:50] <jcoxon> if not the best streaming software is vlc
[09:50] <jcoxon> don't do icecast etc
[09:50] <rharrison> Ok thanks for that
[09:50] <jcoxon> thank fsphil for the hard work :-)
[09:51] <jcoxon> then its a matter of a php script to do cat commands and read the freq
[09:51] <jcoxon> it'll be far better then my radio :-p
[09:51] <rharrison> Yep
[09:51] <rharrison> Thats the plan
[09:51] <rharrison> It will be great so I can track when at work :)
[09:52] <rharrison> or indeed let others track from remote locations
[09:52] <jcoxon> rharrison, oooo need to chat with you about hte tracker/listener
[09:52] <rharrison> Soure
[09:52] <jcoxon> 99
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[10:01] <fsphil> rharrison, if you're going to do an ft817 page let me know, I'll probably be doing one myself but there's no point us duplicating that
[10:05] <juxta> I bought one of these for measuring lift: http://www.dealextreme.com/details.dx/sku.18014
[10:05] <juxta> it did a really good job
[10:06] <jonsowman_work> hmm might invest in one of thoe
[10:06] <juxta> i also rigged up the filler with a quick realise and ball valve so that it can disconnect from the hose so that we get an accurate measurement, not influenced by a hose hanging off it
[10:07] <juxta> quick release*
[10:08] <jonsowman_work> neart
[10:08] <jonsowman_work> s/neart/neat/
[10:10] <jcoxon> juxta, i'll leave it to you to turn off the radio
[10:10] <jcoxon> i did some modifications to the payload so it probably lost lock
[10:14] <jonsowman_work> who put in the location request save for An Creagan?
[10:15] <juxta> jcoxon: OK
[10:16] <juxta> jcoxon: what time will you be around until on sat night?>
[10:18] <jcoxon> jonsowman_work, thats fsphill
[10:18] <jcoxon> juxta, well i'm going up to cambridge at around 13:00 UTC
[10:18] <jcoxon> so will leave the computer on
[10:18] <jcoxon> then you can just turn the radio on and off when required
[10:19] <jonsowman_work> jcoxon: thanks
[10:19] <jonsowman_work> I will do it when I get home - can't access server from work
[10:19] <jonsowman_work> fsphil: see above
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[10:37] <fsphil> thanks jonsowman_work
[10:41] <jonsowman_work> no problem :)
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[10:51] <jonsowman_work> Matt_soton: ping
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[12:04] <juxta> ping earthshine
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[13:02] <cuddykid> Hi all, does anyone know how to get balloon to appear in the spacenear tracker? I'm decoding in fldigi and have set to extract & upload data but I don't have a xml file for the balloon? :S
[13:06] <fsphil> you'll need to hav a word with natrium42 or jcoxon
[13:07] <fsphil> sounds like your making great progress, when do you plan to launch?
[13:07] <cuddykid> ok, thanks fsphil
[13:07] <cuddykid> yes, huge amount of progress has been made in past few weeks
[13:07] <cuddykid> planning to launch after hol so mid-late august time :)
[13:07] <cuddykid> just putting all the bits and bobs in the payload box now and testing!
[13:08] <fsphil> yes, testing is good! :)
[13:10] <cuddykid> haha, yes! Though because its my 1st payload theres not much to test, in the box is a camera and gps/radio/arduino (for tracker). Left out temp sensors and other fancy equipment for the next go!
[13:10] <jonsowman_work> cuddykid: got a sample string?
[13:11] <cuddykid> jonsowman_work, hold on, I'll try and find one!
[13:12] <cuddykid> jonsowman_work: HABE1,33,17:46:19,52.2789,-2.2416,73*06
[13:13] <jonsowman_work> hmm right, was wondering if there was an XML existing that you could temporarily use by changing the payload name in the string
[13:13] <jonsowman_work> this is very similar
[13:13] <jonsowman_work> http://www.robertharrison.org/listen/nova18.xml
[13:13] <cuddykid> i'll have a look :)
[13:13] <jonsowman_work> try changing HABE to NOVA18
[13:14] <jonsowman_work> *HABE1
[13:14] <cuddykid> ok, will do thanks
[13:14] <jonsowman_work> until jcoxon or natrium42 can sort out a habe1.xml
[13:14] <cuddykid> yep! thanks :)
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[15:29] <fsphil> yes! I can transmit images again. the volatile workaround is working well ms7821 :D
[15:32] <ms7821> fsphil: good news :D Did you work out what was scrambling r29?
[15:33] <fsphil> I haven't yet, I'm going to try condensing it down to the minimum needed to still trigger the bug
[15:34] <fsphil> and submit it to the avr-gcc devs
[15:34] <fsphil> I had a quick look through the reported bugs and I didn't see anything that looked like this
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[16:15] <TraumaPony> Anyone know off the top of their head what altitude HSDPA stops working on average?
[16:15] <SpeedEvil> It will be completely variable
[16:15] <SpeedEvil> much like GSM
[16:16] <SpeedEvil> It's dependant on the beam patten of the individual towers.
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[16:16] <SpeedEvil> They are mostly aimed a little below the horizon, with quite a lot of gain
[16:17] <TraumaPony> Oh hai SpeedEvil
[16:17] <SpeedEvil> hai.
[16:17] <TraumaPony> Was it you I was having this discussion with last night or sgt_lemming
[16:18] <SpeedEvil> I would expect it to never exceed 5km, and rarely get below 100m
[16:18] <SpeedEvil> not me
[16:19] <TraumaPony> Hmm, blast
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[16:28] <futurity> Hi everyone
[16:28] <futurity> is jcoxon's launch still on for 6pm BST?
[16:30] <fsphil> last I heard, he set the topic this morning
[16:30] <fsphil> that's tomorrow, not today
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[16:31] <futurity> oh i see
[16:31] <cuddykid> launch is tomorrow at 6
[16:31] <futurity> good job i popped by and checked
[16:31] <futurity> was going to drive there shortly ;)
[16:31] <fsphil> phew :)
[16:31] <cuddykid> haha, good job!
[16:32] <futurity> cuddykid: thanks
[16:32] <futurity> fsphil: thanks
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[17:17] Nick change: amee2k -> amee3k
[17:17] Nick change: amee3k -> amee2k
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[17:35] <cuddykid> something very weird has just happened! I was out testing the tracker (lassen iq, ntx2 and arduino) and when I got back I looked on fldigi and only a few lines had come through (there was also a lot of garbage data). However now, the lassen seems to have stopped sending out nmea sentences all together! :S can anyone help?!
[17:37] <fsphil> loose connection?
[17:38] <cuddykid> fsphil, checked all connections and they seem in tact :/
[17:40] <LA3QMA> this BallastHalo 5 thing.. how far aprox are the signal reaching at max altitude?
[17:41] <fsphil> cuddykid, can you test the lassen alone?
[17:41] <cuddykid> fsphil, I wonder whether somethings overheating? maybe the lassen? :S As it was in the sun for a while.
[17:41] <cuddykid> fsphil, I've just uploaded a script to read what ever the lassen is outputting and its outputting absolutely nothing!
[17:42] <fsphil> LA3QMA, quite a bit - the signals have been received up to about 550km so far
[17:42] <LA3QMA> then i'm 400km further away :o/
[17:43] <fsphil> cuddykid, does anything feel hot?
[17:43] <fsphil> LA3QMA, how high up are you?
[17:43] <fsphil> I think you might have a chance
[17:43] <cuddykid> fsphil, no, lassen is cold! and the rest of the equipment seems fine
[17:43] <LA3QMA> JP20PI Shetland is ok with 5-10W on VHF when i'm atthe repeater qth
[17:44] <LA3QMA> Rundemannen is about 600asl
[17:44] <fsphil> LA3QMA, it's worth a try. I'm able to receive the signals from 500km when it's about 20km altitude
[17:45] <LA3QMA> yes i just have to find a proper yagi.
[17:45] <fsphil> cuddykid, is there any way you can connect the lassen to the PC?
[17:45] <cuddykid> fsphil, no :/
[17:45] <cuddykid> only via arduino
[17:46] <jonsowman> serial terminal?
[17:46] <jonsowman> COM port or a usbser adapter
[17:46] <cuddykid> it reads the serial from lassen, plugged in through usb to laptop
[17:46] <fsphil> LA3QMA, I used a vertical so a yagi will definitely work for you as long as it gets above you're horizon
[17:47] <fsphil> you're = your
[17:48] <LA3QMA> yes from that qth there are nothing but air between mee and the baloon
[17:49] <LA3QMA> not sure what mode i should monitor.
[17:51] <sbasuita> LA3QMA: you want ssb
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[17:51] <sbasuita> the signal is fsk
[17:52] <LA3QMA> ok so both CW and RTTY are on USB ?
[17:53] <fsphil> yep
[17:53] <LA3QMA> ok :o)
[17:54] <fsphil> they are quite close together, it should be possible to receive both at the same time
[17:55] <fsphil> for the rtty, you should use dl-fldigi as it will recognise the strings and upload them to the tracker
[17:55] <LA3QMA> the baud rate is a bit fast for my NUE PSK interface hehe so then i have to bring my litle acer A1
[17:56] <cuddykid> fsphil, you're right! I think its a loose connection with the connector to the lassen. Have to swap the connector for another!
[17:56] <fsphil> plus it would be very cool to see a string received from 900km away :D
[17:57] <fsphil> cuddykid, I bet that's a relief!
[17:57] <LA3QMA> i have fldigi on the litle pc
[17:57] <LA3QMA> hehe 900 would be fun yes
[17:57] <fsphil> dl-fldigi is a modified version with enhancements for tracking the payloads
[17:58] <cuddykid> fsphil, it is!! Well, at least I hope thats the problem as it keeps flashing up on the laptop when i move the connector around (new serial port has been detected)!
[17:58] <LA3QMA> ahh do you have a link or is it on the fldigi page?
[17:58] <fsphil> what OS are you using?
[17:59] <LA3QMA> linux... Ubunto on home and laptop
[17:59] <LA3QMA> debian on everything else
[17:59] <sbasuita> dl-fldigi will take the strings you receive and upload them to the central tracking server
[17:59] <sbasuita> so everybody can see on spacenear.us/tracker
[17:59] <fsphil> the source is here: http://github.com/jamescoxon/dl-fldigi/
[17:59] <LA3QMA> ahh there are no Internet at that mountain
[17:59] <fsphil> but I'm pretty sure someone has already built deb packages
[17:59] <LA3QMA> maybe if there are som eopen wlan
[17:59] <sbasuita> fsphil: yeah that's me ;)
[18:00] <sbasuita> LA3QMA: well you can add ppa:simrunbasuita/dl-fldigi to your software sources then install the dl-fldigi packages anyway if you want
[18:00] <sbasuita> (on ubuntu)
[18:00] <sbasuita> i guess for debian just directly download the debs at https://launchpad.net/~simrunbasuita/+archive/dl-fldigi
[18:01] <fsphil> even without internet, you'll still get the position and altitude displayed
[18:01] <LA3QMA> fsphil: yes but then you dont get it ;o)
[18:02] <LA3QMA> so the telemetry is the main difference from the regular fldigi?
[18:02] <fsphil> yes, the regular fldigi will still receive and display the text but it won't do anything with it
[18:02] <cuddykid> wooooooo! just got through a string of data again :):)
[18:05] <LA3QMA> then its up'n running
[18:06] <fsphil> which mountain, LA3QMA?
[18:07] <LA3QMA> pretty close to this AIS station http://aprs.fi/info/002573235
[18:07] <LA3QMA> http://aprs.fi/?call=002573235
[18:07] <fsphil> oh wow, that's perfect
[18:08] <LA3QMA> a more perfect place would be Ulriken but we have a TV broadcast station there so it's impossible to monitor anything hehe
[18:11] <LA3QMA> hmm have seen this systems been used on PSK to monitor stations. this could be used on satelites too
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[18:58] <jonsowman> fsphil: ping
[18:58] <fsphil> pong
[18:58] <jonsowman> your launch site is added to the v2 predictor :)
[18:58] <fsphil> thanks!
[18:58] <jonsowman> you're welcome :)
[18:59] <fsphil> I'll be watching it in the next few weeks, see if the winds calm a bit
[18:59] <jonsowman> sounds good
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[19:57] <jcoxon> evening all
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[20:10] <rjharrison> .
[20:10] <rjharrison> Looks like I'm connected
[20:10] <rjharrison> Hey jcoxon
[20:11] <rjharrison> You well tested (pre-flight that is_
[20:11] <jcoxon> indeed i am
[20:11] <jcoxon> have run lots of scenarios
[20:11] <jcoxon> run the ballast tanks through
[20:11] <jcoxon> and have test various resets
[20:12] <jcoxon> tested*
[20:12] <rjharrison> Cool If you get with in a reasonable distance to me on Sunday morning I'll recover if you like
[20:12] <rjharrison> Excellent
[20:12] <jcoxon> thanks
[20:12] <jcoxon> flight path is slightly improved
[20:12] <rjharrison> Try not to drop it out the window B4 launch :)
[20:12] <jcoxon> still need a float at some point
[20:12] <jcoxon> haha
[20:12] <jcoxon> that was BH2
[20:13] <rjharrison> Yep this is a bit large for that kind of problem
[20:13] <jcoxon> its pretty solid
[20:13] <rjharrison> So it appears
[20:13] <jcoxon> going up to cam early so will have lots of time
[20:13] <rjharrison> been to the continent twicer
[20:13] <rjharrison> Cool
[20:13] <rjharrison> 18:00 BST launch?
[20:14] <jcoxon> 19:00 BST
[20:14] <rjharrison> ok well I will be about
[20:14] <jcoxon> great
[20:14] <rjharrison> I'm not expecting amy problems with the tracker or anything
[20:15] <rjharrison> BH is well tested
[20:15] <rjharrison> I assume that the call sign is fixed and the same
[20:15] <rjharrison> Altas?
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[20:18] <jcoxon> yeah
[20:24] <gb73d> i will put the rig on if I can be bothered
[20:25] <gb73d> wheres it heading ?
[20:25] <gb73d> is it going across channel ?
[20:26] <jcoxon> gb73d, more it going north then west
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[20:45] <gb73d> k may give it a try, have a lot of foliage round here this summer prolly would nt work so well as back in feb
[20:46] <jcoxon> yeah its slightly in the wrong direction for you iirc
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[21:18] <gb73d> also a bit hot in here for intensive monitoring activities
[21:18] <gb73d> ia m looking forward to a long distance attempt to europe again perhaps
[21:19] <fsphil> only with gps this time :)
[21:19] <jcoxon> fsphil, fingers crossed
[21:19] <jcoxon> it does worry me
[21:20] <jcoxon> not sure how great teh gps will perform in such cold temps
[21:21] <jcoxon> hmmm how were the cars getting placed on the map for juxta's flight?
[21:21] <fsphil> I was wondering that myself
[21:22] <fsphil> I don't think the gps code in dl-fldigi works?
[21:22] <jcoxon> no it doesn't
[21:22] <jcoxon> looking at the logs its a direct uploads to spacenear.us
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[21:24] <jcoxon> yeah its a direct upload
[21:25] <fsphil> what's still to be done in dl-fldigi?
[21:26] <jcoxon> well DanielRichman has been working on getting it threaded nicely
[21:26] <jcoxon> but he hasn't finished it
[21:27] <DanielRichman> managing to kill the thread is a pain
[21:28] <DanielRichman> since forex you might end up blocking on an read() to whatever your serial port was configured as
[21:28] <DanielRichman> yet if you want to change the config and restart you need some way to break out of that read
[21:28] <DanielRichman> options were signals (trial implemetnation in a branch on my github; don't think it works)
[21:28] <DanielRichman> since you can send a specific signal to a thread
[21:28] <DanielRichman> but I think that using non blocking IO, select() and a pipe to update the config would be easier
[21:29] <DanielRichman> that way it can idle until either some data arrives or something arrives through the pipe to tell it that it needs to open a different file
[21:29] <DanielRichman> haven't done it yet :P
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[22:00] <jcoxon> grrr i sometimes think i should add a gps to the backup system
[22:00] <jcoxon> for the flight tomorrow
[22:09] <RocketBoy> gps lock problems?
[22:09] <jcoxon> no problems currently
[22:09] <jcoxon> but i worry
[22:09] <RocketBoy> tish pa
[22:10] <RocketBoy> so all set for tomorrow eve?
[22:10] <jcoxon> yeah
[22:10] <jcoxon> got to construct the balloon vent tomorrow
[22:11] <jcoxon> but apart from that - all set
[22:12] <jcoxon> RocketBoy, am going up quite early - get there just after lunch but we'll still be launching at 19:00BST
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[22:13] <jcoxon> looks like it might be a bit breezy tomorrow
[22:13] <RocketBoy> cool - I'll bring the balloon over about 17:00
[22:13] <jcoxon> ~15
[22:13] <jcoxon> mph that is
[22:14] <RocketBoy> bit windy - yourl need some cover
[22:14] <jcoxon> yeah - should be able to find a suitable fill site
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[22:15] <griffonbot> @jamescoxon: #bh5 #arhab BallastHalo 5 launch tomorrow at 18:00UTC from Cambridge, follow on http://spacenear.us/tracker, chat on #highaltitude, freenode [http://twitter.com/jamescoxon/status/18147925493]
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[22:39] <LazyLeopard> Pretty display of noctilucent clouds over London just now....
[22:41] <fsphil> nice. just clouds of the wet variate here
[22:42] <fsphil> variety
[22:43] <fsphil> spell checkers are over-rated
[22:43] <junderwood> HelioSS1 payload recovered!
[22:43] <junderwood> http://www.flickr.com/photos/51961961@N08/sets/72157624459186628/
[22:44] <fsphil> sweet!
[22:49] <jcoxon> amazing
[22:49] <jcoxon> intact?
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[22:50] <stilldavid> wonder what happened with the balloons?
[22:50] <junderwood> jcoxon, more or less. The Celotex box is trashed but that doesn't surprise me.
[22:50] <jcoxon> run over?
[22:51] <jcoxon> ping natrium42
[22:51] <junderwood> stilldavid, I think the balloons leaked on the way up
[22:51] <natrium42> yo
[22:51] <jcoxon> couple of questions
[22:51] <stilldavid> that makes sense, I suppose. kind of a bummer
[22:51] <natrium42> sup?
[22:51] <jcoxon> tomorrow both wb8elk and i are launching
[22:51] <junderwood> jcoxon, just a hard landing for the box. Cameras all fine
[22:51] <jcoxon> any chance of 2 altitude graphs?
[22:52] <jcoxon> also how did juxta go about the cool car pics
[22:52] <jcoxon> direct upload to spacenear.us
[22:52] <jcoxon> ?
[22:52] <junderwood> stilldavid, balloons demonstrated Boyle's law on the way down.
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[22:53] <stilldavid> that's cool. for some reason I had it in my mind that they had popped and that's why there were deflated
[22:56] <natrium42> jcoxon, yeah, POST or GET to spacenear.us
[22:56] <natrium42> jcoxon, did you have float prediction code?
[22:57] <jcoxon> any chance you could stick an example string on the wiki - a number of people would like to have a go with it
[22:57] <jcoxon> ummm basically i don't let it burst :-p
[22:57] <natrium42> it's same as always
[22:57] <jcoxon> its in the jcoxon directory on your server
[22:57] <jcoxon> natrium42, what defines it as a car
[22:57] <natrium42> chase or car in the callsign
[22:57] <jcoxon> oh right
[22:57] <jcoxon> cool cool
[22:58] <natrium42> based on http://github.com/rjw57/cusf-landing-prediction
[22:58] <natrium42> ?
[22:58] <natrium42> if yes, then you can just plug it in for your launch
[22:58] <jcoxon> ooo cool
[22:59] <natrium42> wtb NESW icons for cars :P
[23:00] <natrium42> jcoxon, i should make an iphone app for car tracking
[23:01] <jcoxon> hehe indeed
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[23:25] <RocketBoy> nights
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[23:35] <DrLuke> Hello
[23:35] <jcoxon> hi DrLuke
[23:36] <DrLuke> I am currently planning to launch a helium balloon in the near future
[23:36] <jcoxon> cool
[23:36] <DrLuke> and I wanted to know what would be a good radio transciever for the balloon
[23:36] <jcoxon> where from?
[23:36] <DrLuke> germany
[23:36] <DrLuke> no license of any kind
[23:36] <jcoxon> my next question :-)
[23:36] <DrLuke> I found this: http://www.sparkfun.com/commerce/product_info.php?products_id=9411
[23:37] <DrLuke> but it's way too expensive
[23:37] <jcoxon> well here in the UK we have to use licence exempt radios
[23:37] <jcoxon> and are very limited by power
[23:37] <jcoxon> but we have been very successful with the Radiometrix NTX2
[23:37] <jcoxon> in Germany you might be able to use a more powerful version
[23:38] <DrLuke> ok thanks :)
[23:38] <jcoxon> the ntx2 is only a transmitter
[23:38] <DrLuke> is there some formula to calculate the distance for a certain power?
[23:38] <jcoxon> if you want a transceiver the nhave a look at the other models from radiometrix - they are excellent radios and not that expensive
[23:38] <DanielRichman> yeah: if (line_of_sight) { true; }
[23:39] <DrLuke> yeah :P
[23:39] <DanielRichman> although someone who actually knows the formula - there is one - will have me shot
[23:39] <jcoxon> DrLuke, with 10mW we have got 555km range
[23:39] <DanielRichman> in practice we can keep up comms until it goes over the horison with 50baud rtty
[23:39] <DrLuke> jcoxon, but with a directional antenna, right?
[23:39] <jcoxon> actually not in that case
[23:39] <DanielRichman> dunno, what was he using?
[23:39] <jcoxon> vertical
[23:40] <DanielRichman> and 1/4 wave groudnplane transmitter
[23:40] <DrLuke> oh wow I have no idea of all that
[23:40] <DrLuke> :P
[23:40] <DanielRichman> 5 straws and some metal?
[23:40] <DrLuke> ok that works
[23:40] <DanielRichman> :D
[23:40] <DrLuke> Or I'll just buy some antenna
[23:40] <jcoxon> on the balloon i recommend making it
[23:40] <DrLuke> oh wait I acutally saw that setup in some picture
[23:40] <jcoxon> make it softer for landing :-p
[23:40] <DrLuke> :P
[23:41] <DrLuke> ok thanks for the great help guys
[23:41] <DrLuke> I'll look over radiometrix' site
[23:41] <DrLuke> another question, do I have to look for narrowband or wideband?
[23:42] <DanielRichman> we chose the ntx2 because of its track record and because it doesn't require a license
[23:42] <DanielRichman> I don't kknow the rules over there
[23:42] <jcoxon> DrLuke, the one thing that we do use it very good receivers on the ground
[23:42] <jcoxon> usually amateur radios
[23:42] <DrLuke> oh
[23:42] <DanielRichman> yeah some of the radiometrix modules arn't typically covered by amateur radios
[23:43] <DanielRichman> DrLuke: you don't need a license to receive :)
[23:43] <DrLuke> :)
[23:43] <DrLuke> ok, but I probably won't get any access to an amateur radio
[23:43] <DanielRichman> sure you will. there must be a club nearby?
[23:43] <DrLuke> I'll have to look for that
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[23:43] <Laurenceb> hi
[23:43] <DrLuke> hi
[23:43] <DanielRichman> cool well good luck. I'm off now; be back in two weeks
[23:44] <Laurenceb> anyone see noctilucent clouds over northern UK?
[23:44] <DrLuke> bye daniel
[23:44] <jcoxon> Laurenceb, LazyLeopard saw them over london earlier iirc
[23:45] <fsphil> still clouded out here :(
[23:45] <DrLuke> damn, I wish I could see some
[23:45] <Laurenceb> interesting, very widespread then
[23:46] <LazyLeopard> Yeah, looked like it'd be widespread as it was fairly extensive...
[23:46] <jcoxon> ping natrium42
[23:47] <DrLuke> take some photos
[23:48] <natrium42> yo
[23:48] <fsphil> it's amazing that anything like that can form up that high
[23:48] <jcoxon> where can i change the way that atlas is shown on spacenear.us
[23:48] <jcoxon> the fields are a bit off
[23:49] <natrium42> ah, that's horus' stuff
[23:49] <jcoxon> did you keep the old atlas code?
[23:49] <natrium42> yep, it's in index.php
[23:49] <jcoxon> okay
[23:49] <jcoxon> will have a play if thats okay
[23:49] <jcoxon> i've ssh'd in alread
[23:49] <jcoxon> y
[23:49] <natrium42> i can change it for you
[23:49] <jcoxon> okay
[23:50] <jcoxon> probably best
[23:51] <natrium42> done
[23:51] <natrium42> same fields?
[23:51] <jcoxon> 1 less temp
[23:51] <jcoxon> so only Temp0 and Temp1
[23:52] <jcoxon> and the final field is ballastmode
[23:52] <natrium42> k, also 10 = no float, 11 = at float, 12 = dropping ballast?
[23:52] <jcoxon> thats changed
[23:52] <jcoxon> one sec i'll find the definitions
[23:53] <jcoxon> okay for At float its a little different
[23:53] <jcoxon> so 10 is at float
[23:54] <jcoxon> then if we lose float it counts down to 0
[23:54] <jcoxon> and 0 is no float
[23:54] <jcoxon> but might as well leave it as numbers to tell the truth
[23:55] <natrium42> k
[23:55] <jcoxon> okay looks good
[23:55] <Laurenceb> are you launching a floater?
[23:55] <jcoxon> yeah with ballast tanks
[23:55] <Laurenceb> oh dear that sounded bad
[23:55] <jcoxon> tomorrow evening
[23:56] <fsphil> flush that idea
[23:56] <Laurenceb> you know what I really meant :P
[23:56] <Laurenceb> cool, good luck
[23:56] <jcoxon> might end up in the sea :-p
[00:00] --- Sat Jul 10 2010