[00:00] edmoore (~ed@2002:80e8:fad3:9:21b:63ff:feac:4133) left irc: Ping timeout: 260 seconds [00:03] Randomskk: is there any more than that lecture? [00:03] I didn't actually go to it; I just got those notes by email and they appear to be the powerpoint presentation the guy gave [00:04] ahh, well they're interesting enough [00:05] edmoore (~ed@pluto.trinhall.cam.ac.uk) joined #highaltitude. [00:06] edmoore, !!!! [00:06] yes [00:06] hi :D [00:07] hi. [00:07] XD [00:08] so, do you know if the github predictor code it working? [00:08] rich warehams? [00:08] yes [00:08] the one with monte carlo stuff [00:08] oh, not so sure about specifically that, you'll have to ask him [00:08] cool, i am just looking into adding it to the tracker [00:08] cool [00:09] i wouldn't bother with MC for that [00:09] you just want to ML solution anyway :) [00:09] hmm [00:09] so what code should i be using? [00:10] can you link me to the github you're looking at currently? [00:10] there are so many versions :P [00:11] http://github.com/rjw57/cusf-landing-prediction [00:11] GeekShadow (~Antoine@reactos/tester/GeekShadow) joined #highaltitude. [00:11] i think that should just work as-is [00:14] is it recommended? or should i use the code from the cvs? [00:14] use rich's [00:14] it's current and running [00:15] so the cvs code is not used anymore? [00:16] that's basically identical to what is in pred_src, except not as debugged and tested [00:16] rich' stuff is the active branch of what is in websvn, effectively [00:16] + better grib server interfacing [00:17] ah, excellent [00:20] edmoore, so how does your landing spot prediction work [00:20] do you just feed in the current position or the track so far? [00:20] because from track-so-far you could maybe get better wind vectors for lower levels than from GFS [00:21] track so far gives you no info about the future really, as the winds are pretty much uncorrelated at the different levels [00:21] so you just feed the latest telem pos as the initial condition and re-run [00:22] we also found that the grib knew better about the winds at level x on the way back down than using the data you collect at level x on the way back [00:22]  [00:22] on the way up* [00:23] because you are usually significantly temporally and spatially different at level x on the way back down to the way back up [00:23] ah [00:24] i thought balloon data would be better than the one from weather models (with sparse input) [00:24] this is quite surprising [00:24] same. when we tried it, it was a fair bit worse [00:25] makes it easier then [00:25] yep [00:53] edmoore (~ed@pluto.trinhall.cam.ac.uk) left irc: Quit: edmoore [01:03] natrium42 (~natrium@CPE000625d867e2-CM0014045885be.cpe.net.cable.rogers.com) left irc: Quit: Leaving [01:18] natrium42 (~alexei@CPE000625d867e2-CM0014045885be.cpe.net.cable.rogers.com) joined #highaltitude. [02:04] trialex (~103302A29@60-240-55-188.tpgi.com.au) joined #highaltitude. [02:05] GeekShadow (~Antoine@reactos/tester/GeekShadow) left irc: Read error: Connection reset by peer [02:08] OK getting to the last stages of my balloon project, need some advice. [02:09] Currently using my homemade 1m dia parachute, but getting scared, thinking about springing for a commercial 'chute. [02:11] For a 3kg package, I'm thinking maybe a 5ft chute from the-rocketman.com [02:13] Any advice? [03:15] Jasperw (~jasperw@skeleton2.london.iofc.org) left irc: Quit: Leaving. [03:36] trialex (~103302A29@60-240-55-188.tpgi.com.au) left irc: Ping timeout: 265 seconds [03:38] jasonb (~jasonb@dsl027-180-244.sfo1.dsl.speakeasy.net) left irc: Ping timeout: 264 seconds [03:55] jasonb (~jasonb@m4a0536d0.tmodns.net) joined #highaltitude. [04:07] Twiner (~blah@81.191.131.67) left irc: Changing host [04:07] Twiner (~blah@unaffiliated/twiner) joined #highaltitude. [04:08] jasonb (~jasonb@m4a0536d0.tmodns.net) left irc: Ping timeout: 265 seconds [07:45] natrium42 (~alexei@CPE000625d867e2-CM0014045885be.cpe.net.cable.rogers.com) left irc: Quit: My other car is a cdr. [08:01] morning [08:03] morning all [08:03] hi MikeMc68 [08:19] hi all [08:21] hi juxta [08:21] hey MikeMc68 [08:21] I sat a course for my ham license today [08:21] terribly boring :( [08:21] our rules are horrible here [08:23] when will you know if you've passed? [08:23] I sit the exam tomorrow [08:24] I'll pass it, it's very easy [08:24] ok [08:24] juxta is this for the so called full licence [08:24] but I have to wait 4-5 weeks for the license though [08:24] or is there a grading system [08:24] rjharrison: no, this is for foundations - the lowest grade [08:24] same as here [08:24] I asked them for a sample standard test, which I also passed when I ran through it [08:25] but the standard test also has a horrible regulations component [08:25] so whilst I could pass the theory, I would have no chance re the regulations [08:25] I'm looking at a sample paper now, it's 19 pages long [08:28] wow just 25 multiguess questions here [08:28] foundations is 25 very easy questions [08:28] but it's not a very good license: no digital modes, 10W max power [08:31] same in UK [08:34] Simon-MPFH (~simon@phantom.mpfh.co.uk) joined #highaltitude. [08:47] edmoore (~ed@pluto.trinhall.cam.ac.uk) joined #highaltitude. [08:50] MikeMc68: [08:50] The call sign suffix group IYA - IYZ is reserved for issue to [08:50] a) visiting amateurs [08:50] b) commemorate United Nations' declared years [08:50] c) specified Youth Groups and schools [08:50] d) stations participating in International contests [08:51] that the sort of thing in the stupid regulations test [09:01] Laurenceb (~laurence@host86-141-78-19.range86-141.btcentralplus.com) joined #highaltitude. [09:11] icez (~icez@unaffiliated/icez) left irc: Remote host closed the connection [09:20] lol [09:21] Why on earth would a radio operator NEED to know that ? [09:23] not too sure [09:23] turns out it's b [09:23] I've gone over the stuff, I might be OK [09:24] only downside is that the tests cost $67 each and have a 48 hour exclusion period [09:24] so I can't site the standard one, fail the regulations stuff, then do foundations [09:24] I'd have to do foundations, pass it, then pay again and sit standard and hopefully pass the regulations [09:24] bastards ! [09:25] oh, and pay $35 for a practical test [09:25] which is basically just powering up a radio and making a transmission in sideband [09:26] oh wait, it says license upgrades are $41 [09:26] but that probably won't apply seeing as they take 4 weeks to issue the thing in the first place [09:47] GW8RAK (~56172745@gateway/web/freenode/x-eplfxqqokxbvzmfy) joined #highaltitude. [09:50] Randomskk: thanks [10:10] GW8RAK (~56172745@gateway/web/freenode/x-eplfxqqokxbvzmfy) left irc: Quit: Page closed [10:20] hi folks [10:20] SpeedEvil: whats the worst that could happen if I plug a lipo into a 470uF tantalum cap? [10:22] it could go pop [10:24] I dont quite get why [10:24] I mean how is enough energy dissapated [10:25] or is it a case of the feed line inductance? [10:25] creating a high voltage peak ? [10:26] F4EIR (~5c8d7a15@gateway/web/freenode/x-zmpczbkoqgnrxabn) joined #highaltitude. [10:26] good morning all [10:27] whats the stats for the lipo? [10:27] dunno [10:27] just a general lipo for RC use [10:27] I'm designing a switching supply - it needs a large cap on the battery rail [10:28] oh [10:28] is it a decoupling cap ? [10:28] yes [10:29] ahh - i thought you were just experimenting with connecting caps across batteries [10:29] lol [10:29] in that case it will be fine [10:29] tantalums do not like fast risetime high current pulses [10:29] they can explode. [10:29] I see [10:30] one reason for the soft start option I guess [10:30] http://ieeexplore.ieee.org/Xplore/login.jsp?url=http%3A%2F%2Fieeexplore.ieee.org%2Fiel6%2F33%2F25363%2F01136680.pdf%3Farnumber%3D1136680&authDecision=-203 [10:30] - on the lt3467 [10:30] nepp.nasa.gov/DocUploads/68DBDB5C-E91F-451A.../surge.pdf [10:30] not a full url [10:31] http://docs.google.com/viewer?a=v&q=cache:sRMDfLcSBXwJ:nepp.nasa.gov/DocUploads/68DBDB5C-E91F-451A-8F18190A4D0473E5/surge.pdf+tantalum+high+current+failure&hl=en&pid=bl&srcid=ADGEESj64c_ECEkhTJ77c53QbDE78F71hVJxym_YDQvtnJLMXCDsT1KN6ItKdm7iEP4LshvWeiUB92nLAqqIMrebBTXlxppyYdSO1LeopI7BYDnhUfWndQCt4EtYWh97AvEXj0wStgam&sig=AHIEtbQ97ujU-6COwzEiqjLEm4husUmopw [10:31] even [10:31] cached [10:34] http://www.kyocera.co.jp/prdct/electro/pdf/technical/dipptant.pdf better [10:34] I see [10:34] so basically don'tconnect it directly across the battery [10:35] looks like high voltage doesnt help either [10:36] but yeah prob best to avoid it even if its at a low voltage than the cap rating [10:36] problem is aluminium caps are a bit large [10:38] why more than a ceramic before the smps [10:39] hmm maybe yeah [10:40] Action: Laurenceb fires up spice to take a look [10:41] its horrendously unstable for some reason [10:42] - under sudden changes in current draw [10:49] hmm interesting [10:49] ceramic + small al-electrolytic? [10:49] looks like you need ceramic on the output as well [10:49] that seems to be whats destabilising it [10:49] ah [10:49] I'd gone too large with the caps, and the ESR was too high [10:50] thats one of the main problems [10:50] yeah [10:50] what's the operating freq [10:50] 1.2MHz or 2.1MHz [10:51] looks like you just need ceramic caps for the smsp, and maybe one or two tantalums to smooth out current surges [10:51] - tantalums on the output [10:51] if theres too much ripple of the feedback pin it doesnt settle very well [10:52] *on [10:52] IIRC Ta elects are moderatelyheavier [10:52] junderwood (~John@adsl.jcu.me.uk) joined #highaltitude. [10:56] borism (~boris@213-35-235-6-dsl.end.estpak.ee) joined #highaltitude. [10:56] edmoore_ (~ed@pluto.trinhall.cam.ac.uk) joined #highaltitude. [10:56] edmoore (~ed@pluto.trinhall.cam.ac.uk) left irc: Read error: Connection reset by peer [10:56] Nick change: edmoore_ -> edmoore [10:58] if I use a 10u 0805 ceramic its only got 8mv peak to peak ripple [10:58] cant complain about that [10:59] nope [10:59] high MHz switchers are nice that way [10:59] you're assuming the 10u ceramic has 0 ESR? [10:59] because high value ceramics aren't great [11:00] nah [11:00] LT have a nice recommended part folder [11:00] just grabbed it out of there - so it has the right ESR etc [11:01] ah [11:04] it just tends to hunt a little at 35KHz after a sudden change in current draw [11:04] I guess its not that bad - the hunting is mainly in the input current draw - not the output voltage [11:05] I think its partly an interaction of my lipo model with the input capacitance [11:05] probably not a huge problem - especially if the mems isnt running off the smps rail [11:05] which would be stupid anyway [11:08] :) [11:09] DanielRichman (~DanielRic@unaffiliated/danielrichman) joined #highaltitude. [11:23] F4EIR (~5c8d7a15@gateway/web/freenode/x-zmpczbkoqgnrxabn) left irc: Ping timeout: 252 seconds [11:27] jcoxon (~jcoxon@host81-129-141-46.range81-129.btcentralplus.com) joined #highaltitude. [11:27] morning [11:32] nornign [11:32] morning. [11:34] #highaltitude: mode change '+o jcoxon' by ChanServ!ChanServ@services. [11:34] morning jcoxon [11:34] Topic changed on #highaltitude by jcoxon!jcoxon@host81-129-141-46.range81-129.btcentralplus.com: Welcome to #highaltitude - discuss anything to do with high altitude projects (balloons, gliders, etc) www.ukhas.org.uk, wiki.ukhas.org.uk, WB8ELK Launch ? 27/2/10 19:00UTC spacenear.us/tracker/ [11:34] hey ju [11:34] juxta, [11:35] oh yay, another launch :D [11:35] HF on wb8elk? [11:35] hehe not in the UK [11:35] did an email go out? maybe the list unsubscribed me again :( [11:35] edmoore, nah 70cm rtty, dominiex and hellschriber [11:36] maybe the DL will catch on in the states [11:36] i understand the US ballooners can enrage the APRS network [11:36] thats the plan [11:36] edmoore: enrage how so? [11:36] as basically every APRS gate in the US is in range of a hab aprs beacon [11:36] my thinking is that if they've installed dl-fldigi for a wb8elk flight then they'll be all set to listen for a tran-sa [11:36] trans-a* [11:36] ahh, I see [11:37] jcoxon: how did you get on with the radio? [11:37] juxta, swapped to optoisolators - have got it shifting freq up and down [11:37] then had a fight with linux getting soundcards to work [11:37] but now have it inputting in to dl-fldigi [11:37] nice, is it a case of keeping the circuit closed to keep it scrolling? or do you have to pulse it? [11:38] if you pulse it, it shifts once [11:38] if you hold it it'll scan [11:38] nifty [11:38] connected to an arduino, then usb? [11:38] workable to move a few mhz etc? [11:38] you wired it across the buttons? [11:39] or will you need to change the step size too? [11:39] SpeedEvil: I think directly into the interface pins on the mic socket [11:39] ah [11:41] juxta, we need to work on a frontend [11:41] :-) [11:42] web based? [11:42] should be pretty easy [11:43] SpeedEvil: http://www.falcom.de/typo3temp/pics/7d7ec0b731.jpg [11:43] can't see pics atm [11:43] do you think thats a TCXO at the upper right? [11:43] Laurenceb: I bought 2 of those the other day [11:43] they are very nice [11:43] cheap too :) [11:43] trying to work out if it will run at 2.7v or 3v [11:43] datasheet is a bit skimpy, isnt it [11:43] the ublox5 doesnt main that voltage [11:44] wondering if its the tcxo [11:44] yes [11:44] when mine comes I can test it and tell you [11:44] UK guys - where is the cheapest place to get those ublox units? [11:45] juxta: I have one - it seems to work [11:45] shipping wasnt bad for me from esawdust MikeMc68, but I guess somewhere local would be better [11:45] but I want to be sure it will meet specs [11:45] ah [11:45] annoyingly that ublox5 QFN datasheet is NDA [11:45] maybe email falcom [11:45] but the flyer seems to suggest 2.7 to 3.6v operation [11:46] yeah [11:46] falcom say 3.3v +-5% [11:46] MikeMc68, check out sequioa [11:46] juxta, yeah [11:47] if only there was away to tap into fldigi to get the waterfall out so we could make that web based [11:47] hmm [11:47] you could do that sort of [11:47] have it screenshotted and fed to the page [11:47] somewhat hackish I guess :) [11:47] hehe, yeah [11:47] jcoxon: the websdr stuff might be open source? [11:49] they've sped websdr up [11:49] it runs a lot better now [11:50] jcoxon, you could start a vnc server [11:51] yeah [11:52] but we've found that the waterfall doesn't do great over vnc [11:52] at least with a normal broadband conncetion [12:03] hmm [12:03] Well I can help with a web interface to your arduino thing if you want [12:04] MikeMc68, jcoxon, is this the one? http://www.sequoia.co.uk/shop/product.php?p=807 [12:04] yeah [12:05] will bbl [12:05] cya [12:05] jcoxon (~jcoxon@host81-129-141-46.range81-129.btcentralplus.com) left irc: Quit: Leaving [12:05] the spectrum graph works better [12:05] Are the things that look like pads round the breadboard-size? [12:05] *spacing [12:06] DanielRichman: Yes. Shame they don't sell the breakouts like esawdust do though. [12:06] There's an eval. kit though there on that site I think [12:06] MikeMc68, so I just have to solder some .1 headers to it and plug in [12:06] *except for the bottom row which I would short out [12:07] the eval kits are very expensive from what I've seen [12:08] mmm [12:16] Laurenceb (~laurence@host86-141-78-19.range86-141.btcentralplus.com) left irc: Ping timeout: 245 seconds [12:42] sbasuita (~sbasuita@unaffiliated/drebellion) joined #highaltitude. [12:52] edmoore (~ed@pluto.trinhall.cam.ac.uk) left irc: Quit: edmoore [13:16] SpeedEvil (~user@tor/regular/SpeedEvil) left irc: Quit: Leaving. [13:16] SpeedEvil (1000@tor/regular/SpeedEvil) joined #highaltitude. [13:32] sbasuita (~sbasuita@unaffiliated/drebellion) left irc: Quit: Leaving [13:34] sbasuita (~sbasuita@unaffiliated/drebellion) joined #highaltitude. [13:50] tittux (~root@97.128-66-87.adsl-dyn.isp.belgacom.be) left irc: Ping timeout: 256 seconds [13:51] tittux (~root@241.129-66-87.adsl-dyn.isp.belgacom.be) joined #highaltitude. [13:55] tittux: irc as root? ;p [14:07] that's plain sad [14:13] some people like living life on the edge [14:15] And root is not always important [14:15] for several years I ran with a normal user account called root [14:17] WillD_ (~56a2bed7@gateway/web/freenode/x-ssegntwylwozkaty) joined #highaltitude. [14:18] and of course you can set your ircname to anything you want [14:22] juxta_ (~blah@ppp118-210-194-250.lns20.adl6.internode.on.net) joined #highaltitude. [14:22] juxta_ (~blah@ppp118-210-194-250.lns20.adl6.internode.on.net) left irc: Client Quit [14:24] does anyone know any good UK sources of helium at a reasonable price? [14:24] ebay! [14:24] (though not actually great price) [14:24] Considered H2? [14:25] juxta (fourtytwo@ppp118-210-194-250.lns20.adl6.internode.on.net) left irc: Ping timeout: 276 seconds [14:25] yeah - possibility of hydrogen too - probably cheaper [14:32] I'm pondering doing a natural gas balloon sometime. [14:32] Simply because I'm lazy and there is a tap in the kitchen. [14:32] how does it compare, cost wise? [14:33] would natural gas work? lift-wise? [14:34] 1m^3 is about 30p. [14:35] no, not well. [14:35] it's half atmospheric weight [14:35] so it's obviously a lot worse as a lifting gas [14:41] oh god, the badger2 PCB is complicated [14:41] and by complicated I mean upwards of 500 DRC errors [14:41] :) [14:41] probably simply spacings [14:41] a lot of them are [14:41] but they're still around even on 6mil [14:42] you autorouting it? [14:42] heck no [14:42] though it is already routed [14:42] you need to set the design rules before doing routing [14:42] I haven't actually touched it yet, just looking through it [14:42] then it keeps out automatically - you can't draw over a pad [14:43] this is the design ed & fergus routed last summer iirc [14:43] WillD_ (~56a2bed7@gateway/web/freenode/x-ssegntwylwozkaty) left irc: Quit: Page closed [14:43] DarkCow (~DarkCow@dyn1075-35.hor.ic.ac.uk) left irc: Remote host closed the connection [14:44] it has quite a lot going on [14:44] and a few silly errors that need fixing, but it's easy to see how they happened [14:44] especially in the noise of this many DRC errors [14:52] jcoxon (~jcoxon@212.183.140.35) joined #highaltitude. [14:53] #highaltitude: mode change '+o jcoxon' by ChanServ!ChanServ@services. [14:54] jcoxon (~jcoxon@212.183.140.35) left irc: Client Quit [14:54] GW8RAK (~chatzilla@client-86-23-39-69.brhm.adsl.virginmedia.com) joined #highaltitude. [15:25] ms7821 (~Mark@flat.ms) left irc: Disconnected by services [15:25] ms7821 (~Mark@flat.ms) joined #highaltitude. [15:37] GW8RAK (~chatzilla@client-86-23-39-69.brhm.adsl.virginmedia.com) left irc: Ping timeout: 265 seconds [15:43] edmoore (~ed@pluto.trinhall.cam.ac.uk) joined #highaltitude. [15:45] F4EIR (~5c8d7a15@gateway/web/freenode/x-dlsswzirimpwoiiu) joined #highaltitude. [15:50] edmoore (~ed@pluto.trinhall.cam.ac.uk) left irc: Ping timeout: 264 seconds [15:57] edmoore (~ed@oort.chu.cam.ac.uk) joined #highaltitude. [16:00] Afternnon all [16:00] Action: rjharrison nods to edmoore [16:00] hi [16:08] hi all [16:09] edmoore (~ed@oort.chu.cam.ac.uk) left irc: Quit: Bye [16:09] i try to make dlclient working for next time but i have some trouble [16:10] can anyone help me ? [16:25] Hiena (~Hiena@81.93.195.181.datatrans.hu) joined #highaltitude. [16:28] F4EIR sure what's the problem? [16:30] For the math heads out there how does one go about foinding the largest integer divison of a number without a remainder? eg for 100 its 50 [16:30] for 31250 it's ? [16:30] I guess div 2 then dive 3 then 4 untill I hit it :) [16:30] factorise, take largest factor [16:30] oh I see what you mean [16:30] factorise, divide by lowest factor [16:31] Actually I'm being thick here :) [16:31] Nothing new there :) [16:33] div 2, div 3, div 5 until you get an integer, which is your largest factor... only bother dividing by prime numbers [16:33] for 31250 it's easy since it divides by 2... or do you need to know more ? [16:33] DanielRichman: and stop at n^0.5, of course [16:34] yes, at which point your prime-number-generator should inform you that the next prime number is your input itself [16:34] yikes, that'll be nasty code [16:34] providing the input number isn't too big... allocate n/8 bytes of ram [16:35] try 2, if it works, print result, otherwise set bits 2, 4, 6... to 1... [16:35] try next unset bit (3) and if that doesn't work shade 2, 6, 9, ... [16:35] well the thing is there are usually libraries to return nth factor [16:36] so you don't need to implement it yourself [16:36] unless he wants speed [16:36] (and they work efficiently with large numbers if you need) [16:36] s/speed/to work on an embedded system/ [16:38] either way, since his request to find a factor is quite specific, you might be able to squeese more speed out of that method (I forget its name) even on a desktop vs a generic library [16:38] depends on input range, and whether it's needed. sieve of eratosthenes becomes inefficient very quickly [16:39] i use fldigi 3.12.5 and i have install python like in wiki and dlclient7 [16:40] got it. http://en.wikipedia.org/wiki/Sieve_of_Eratosthenes [16:40] first run it ask for information call, lon lat, rig, antenna and say write config file [16:40] ms7821, gah you beat me to it [16:40] I had forgotten its name [16:41] then i restart script and i had an error Traceback (most recent call last): File "C:\Python26\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py", line 325, in RunScript exec codeObject in __main__.__dict__ File "C:\ballonballast\client7.py", line 119, in user_identity = config.get('User Conf', 'user') File "C:\Python26\lib\ConfigParser.py", line 311, in get raise NoSectionError(section) NoSe [16:42] F4EIR, dlclient installs its own copy of (modified) fldigi if i remember correctly [16:42] are you running that or a vanilla fldigi? [16:43] edmoore (~ed@oort.chu.cam.ac.uk) joined #highaltitude. [16:43] Jasperw (~jasperw@skeleton2.london.iofc.org) joined #highaltitude. [16:43] no, you need install fldigi ans start it, then start the script [16:44] is the config file being written? [16:45] F4EIR, which wiki page are you reading instructions from? [16:45] oh sorry, the file was created but nothinf write donw [16:46] DanielRichman, this one http://spacenear.us/wiki/doku.php?id=dlistening:client [16:46] hmm. Unless you need specific functionality from that one it's a bit clunky. F4EIR, all you're trying to do is listen right? http://ukhas.org.uk/guides:tracking_guide is easier [16:48] F4EIR We abandoned the python script a while back [16:49] As DanielRichman said the new way is to install the dl-fldigi aplication and it will do most of the magick for you [16:50] Basically it fldigi with an early fork and sentances recieved are passed to the child and sent to the server using curl [16:50] ah ok [16:50] F4EIR sorry about that could you let me know where the instructions were as we need to remove those [16:50] Sorry for the inconveniance [16:51] i'll going to read this page, you mabe have a new listener/logger in France [16:51] F4EIR yes pleas [16:51] F4EIR yes please [16:51] rjharrison, they're on spacenear.us's wiki linked somewhere above [16:51] rjharrison, http://spacenear.us/wiki/doku.php?id=dlistening:client [16:52] no problem, it explain wy i can use it since 2 days ... lol [16:52] Will get that removed as soon as possible [16:53] F4EIR some instructions here http://ukhas.org.uk/projects:dlistener [16:53] http://code.google.com/p/dl-fldigi/downloads/list [16:54] The code & binarys are here [16:54] and http://ukhas.org.uk/guides:tracking_guide [16:54] i have make many research for found it, it's not easy. Or i have a wrong start browser page [16:54] Please set up your location in the operator section [16:54] And if you run it you should appear on the loggers map [16:55] http://code.google.com/p/dl-fldigi/downloads/list [16:55] F4EIR Sorry about that it is hidden away I'm afraid [16:56] ok i will try, and y keep an eye on big wings coming from spain [17:00] smithder (~586b4aa5@gateway/web/freenode/x-cuoehjufviyeaxnd) joined #highaltitude. [17:03] Hello, is there any way to view traffic for say the last 30min [17:06] smithder: chat channel trafic? [17:07] DarkCow (~DarkCow@dyn1075-35.hor.ic.ac.uk) joined #highaltitude. [17:08] fsphil (~phil@2001:470:1f09:483:21f:c6ff:fe44:b25b) joined #highaltitude. [17:11] Yes, this channel traffic, just before I signed on ? [17:13] edmoore (~ed@oort.chu.cam.ac.uk) left irc: Ping timeout: 256 seconds [17:14] thank you for all, i'm now QRV [17:15] i see my data in the raw page [17:16] smithder, http://www.pegasushabproject.org.uk/zeusbot/highaltitude.log.20100227 [17:19] Thanks Daniel [17:20] last question: how did you make a nickname in red to tell it , [17:23] RobertB (robert@p579FC968.dip.t-dialin.net) left #highaltitude ("Verlassend"). [17:24] edmoore (~ed@pluto.trinhall.cam.ac.uk) joined #highaltitude. [17:25] F4EIR, say it at the start of the line? [17:27] yes like you just make [17:27] :) [17:34] F4EIR, type the first few letters of someones name, then press TAB. That will autocomplete their name. However the real answer to your question is: if your IRC client receives a message with your name mentioned somewhere in it, It will try to notify you, by highlighting or beeping, etc. [17:36] DanielRichman: ok thank you. I'm throu freenode for the moment [17:58] evening [17:58] jonsowman (~jonsowman@93-97-184-163.zone5.bethere.co.uk) left irc: Ping timeout: 240 seconds [17:59] jonsowman (~jonsowman@93-97-184-163.zone5.bethere.co.uk) joined #highaltitude. [18:09] F4EIR (~5c8d7a15@gateway/web/freenode/x-dlsswzirimpwoiiu) left irc: Ping timeout: 252 seconds [18:43] shauno (~soneil@pdpc/supporter/professional/shauno) left irc: Ping timeout: 252 seconds [18:47] edmoore (~ed@pluto.trinhall.cam.ac.uk) left irc: Quit: edmoore [19:02] icez (~icez@unaffiliated/icez) joined #highaltitude. [19:09] ms7821 (~Mark@flat.ms) left irc: Disconnected by services [19:09] ms7821 (~Mark@flat.ms) joined #highaltitude. [19:35] shauno (~soneil@iwaste.net) joined #highaltitude. [19:36] jacoxon posted a link to the flightcomputer:code page, and in it is a reference to gravity wave experience "From past experience gravity waves are significant," [19:37] shauno (~soneil@iwaste.net) left irc: Changing host [19:37] shauno (~soneil@pdpc/supporter/professional/shauno) joined #highaltitude. [19:38] The link shows a chart on p23 reporting gravity waves from Trope up to float 0 and then they stop... [19:38] Isn't it more likely that these oscilations are a function of the flight and not gravity waves as reported ? [19:41] shauno (~soneil@pdpc/supporter/professional/shauno) left irc: Quit: Changing server [20:02] natrium42 (~natrium@CPE000625d867e2-CM0014045885be.cpe.net.cable.rogers.com) joined #highaltitude. [20:12] Lunar_Lander (~lunar_lan@p54885EB3.dip.t-dialin.net) joined #highaltitude. [20:12] hello [20:25] Lunar_Lander: Hi, is it usually this quiet here ? [20:26] hello [20:26] yes, there are periods of silence [20:26] it disturbed me too first [20:26] but you get used to it ;) [20:26] that's the way IRC works :P [20:26] are you new here? [20:26] Can't concentrate to the right mixture ration, in the noise. [20:27] Yes, more used to a forum or wiki environment [20:27] ah ok [20:27] so do you want the cute or the brutal welcoming present :P? [20:28] Or a hindsight. [20:28] go on then - brutal [20:28] http://www.youtube.com/watch?v=1N_Bby9AKBc&feature=related [20:29] Ehem. [20:29] Yek - what mixture did you use ? [20:31] Still, I suppose you can't say on here - will be watching for key words - still, pretty dirty bang... [20:32] That was BB will be watching [20:32] xD [20:32] Talking about the mixtures: Never ever try to mix up ammonium-nitrate, hydrogen-peroxide, and NaOH. Also, the bottle labeling is critical in the lab. [20:32] what ? [20:33] No way... [20:34] Hiena, speaking from experience? :) [20:37] Yeah. Usually my hindsights came after the experience. Toyed with some nitrate, and after soaking with some peroxide, i missed the milled nitrate tube with the NaOH. Minus one test tube. [20:37] btw you remind me [20:37] you got that "How to get started" text on the wiki right? [20:39] Laurenceb (~laurence@host86-141-78-19.range86-141.btcentralplus.com) joined #highaltitude. [20:40] what about a do/don't list? [20:40] I have an idea for a don't: "Having breaking glass or melting devices in the balloon" [20:40] haha [20:41] "don't launch your pets" [20:43] hi all [20:43] Melting device is very useful as a cut free to prevent landing in the wet stuff [20:44] yeah hot resistor cutters ftw [20:45] Yeah. The cats lousy co-pilots and camera operators. [20:46] Hiena, i found this for you --> http://www.scienceteecher.com/Stand-Back-Try-Science-T-shirt.html [20:46] yeah [20:47] Back the time, when i worked at a aircraft service and maintenance company, we had several aborted test flights due the "cat onboard malfunction". [20:49] hEY natrium42 [20:50] hi [20:50] natrium42 can you remove the old tracker stuff from spacenear.us [20:51] There is some stuff about the python client on there [20:51] and some french guy spent the last two days trying to get the python client working [20:52] Might be best to point it to the UKHAS stuff [20:52] kk [20:54] hrm, i don't remember my username [20:54] and password [21:05] LazyLeopard (~irc-clien@chocky.demon.co.uk) joined #highaltitude. [21:12] jacoxon posted a link to the flightcomputer:code page, and in it is a reference to gravity wave experience "From past experience gravity waves are significant," [21:12] The link shows a chart on p23 reporting gravity waves from Trope up to float 0 and then they stop... [21:13] Isn't it more likely that these oscilations are a function of the flight and not gravity waves as reported ? [21:13] I think he may have been slightly tongue-in-cheek [21:14] why ? [21:14] gravity waves have a big effect [21:15] it is a nasa doc, I don'r think they are kidding http://mysite.verizon.net/milkyway99/sitebuildercontent/sitebuilderfiles/systemsseminarfarley2008.pdf [21:17] yeah he ran some sims for us [21:17] ah, fair enough [21:17] Why should they suddenly stop when the balloon reached float ? [21:20] graph? [21:21] Laurenceb: p23 [21:21] that graph doesn't show the gravity waves stopping at float [21:21] it just shows the average ascent rate dropping to 0 [21:22] the g waves were apparently affecting the ascent prior to float, so why not after? [21:23] because it's not ascending? [21:23] but the balloon is still in the air being driven by the g waves - it can't be immune just because it is not ascending ? [21:24] I don't understand what you're saying. that graph shows the waves at float [21:25] it shows oscillations when float is reached - sort of bobbing up and down - they die out. [21:26] they don't die out completely though [21:27] thats bouyancy oscillation [21:27] excited by the transition to float [21:29] so is the final stable float oscillation due to g waves ? [21:29] yes [21:29] yeah [21:29] Ahh thanks [21:30] What do you think amplifies the g wave on the approach to float ? [21:32] it's just the balloon overshooting the float altitude and then oscillating until it finds it [21:33] that g wave seems to be going on for over seven hours with a wavelength of 12 min - is that normal ? [21:34] juxta (fourtytwo@ppp118-210-194-250.lns20.adl6.internode.on.net) joined #highaltitude. [21:34] pretty much [21:36] It is still going up at ca 4 - 5 m/s doesn't seem to be near float point to me... [21:36] until it reaches 2 hrs in [21:40] my mistake, the wavelength is ca 5 min is that normal ? [21:45] Hiena (~Hiena@81.93.195.181.datatrans.hu) left irc: Quit: -=Got bored from the net. Gone blowing up things.=- [21:45] Yo juxta you woken up down there [21:48] hey rjharrison [21:48] yeah [21:48] just got up [21:53] junderwood (~John@adsl.jcu.me.uk) left irc: Quit: Leaving [21:55] LazyLeopard (~irc-clien@chocky.demon.co.uk) left irc: Quit: Bye [21:56] LazyLeopard (~irc-clien@chocky.demon.co.uk) joined #highaltitude. [22:05] jcoxon (~jcoxon@host81-129-141-46.range81-129.btcentralplus.com) joined #highaltitude. [22:05] #highaltitude: mode change '+o jcoxon' by ChanServ!ChanServ@services. [22:05] Topic changed on #highaltitude by jcoxon!jcoxon@host81-129-141-46.range81-129.btcentralplus.com: Welcome to #highaltitude - discuss anything to do with high altitude projects (balloons, gliders, etc) www.ukhas.org.uk, wiki.ukhas.org.uk, WB8ELK Launch ?? 28/2/10 19:00UTC spacenear.us/tracker/ [22:06] jcoxon (~jcoxon@host81-129-141-46.range81-129.btcentralplus.com) left irc: Client Quit [22:06] grummund (~grummund@unaffiliated/grummund) left irc: Ping timeout: 265 seconds [22:07] grummund (~grummund@unaffiliated/grummund) joined #highaltitude. [22:08] fsphil (~phil@2001:470:1f09:483:21f:c6ff:fe44:b25b) left irc: Read error: Operation timed out [22:09] fsphil (~phil@2001:470:1f09:483:21f:c6ff:fe44:b25b) joined #highaltitude. [22:15] Who is launching tomorrow? [22:27] fsphil (~phil@2001:470:1f09:483:21f:c6ff:fe44:b25b) left irc: Ping timeout: 268 seconds [22:28] fsphil (~phil@2001:470:1f09:483:21f:c6ff:fe44:b25b) joined #highaltitude. [22:30] GeekShadow (~Antoine@reactos/tester/GeekShadow) joined #highaltitude. [22:39] The header for the channel mentions a launch tomorrow but there is nothing in the UKHAS website [22:40] its a US launch I believe [22:41] Oh [22:41] darn :( [22:41] yea, I gor my 70cm yagi on friday - was hoping to try it out. [22:41] you'll need a very tall pole [22:42] indeed! [22:42] Action: SpeedEvil hands fsphil a 10000km roll of coax. [22:42] maybe I can get a reflection of the ISS :) [22:43] gah, I just did a Farnell order and forgot to get the stuff I needed, again. [22:43] fail [22:43] been there, done that [22:44] never admit to it though :) [22:52] smithder (~586b4aa5@gateway/web/freenode/x-cuoehjufviyeaxnd) left irc: Quit: Page closed [22:55] are there any uk launches on the horizon? [22:55] someone should do a good old launch with a camera [22:56] yea [22:56] that's what I will be doing when I can find time to work on mine [22:56] meh, maybe I should do one ;) [22:56] (as if I have the time) [22:56] I have 11 days off work at the end of March and I intend on using the time to work on my payload ready for launch [22:57] I'm working on a little payload that might get launched - only a 640x480 camera though [22:57] what are you putting in the payload MikeMc68? [22:58] if I did a launch I'd probably just thieve james's design and build an atlas clone [22:58] payload will be :- camera, GPS, transmitter, temp sensor, pressure sensor and UV sensor [22:58] russss, russss rjharrison is working on one http://www.flickr.com/photos/30721501@N05/4387329668/in/photostream/ [22:59] ah yes, I saw that before [23:02] good bit of woodworking [23:03] oh that's foam [23:03] Action: fsphil is half asleep [23:03] :) [23:03] good bit of foamworking [23:03] :P [23:05] I wonder if that servo will be remote controlled, or automated [23:05] i am pretty sure it will be automated [23:06] yea - without live images a remote control would be pretty useless [23:06] not sure what remote control would get you as you don't see the viewfinder [23:06] GeekShadow (~Antoine@reactos/tester/GeekShadow) left irc: Quit: The cake is a lie ! [23:15] GeekShadow (~Antoine@reactos/tester/GeekShadow) joined #highaltitude. [23:18] Simon-MPFH (~simon@phantom.mpfh.co.uk) left irc: Read error: Connection reset by peer [23:19] Simon-MPFH (~simon@phantom.mpfh.co.uk) joined #highaltitude. [23:19] natrium42 (~natrium@CPE000625d867e2-CM0014045885be.cpe.net.cable.rogers.com) left irc: Quit: Leaving [23:24] fsphil (~phil@2001:470:1f09:483:21f:c6ff:fe44:b25b) left irc: Quit: Ooch [23:25] LazyLeopard (~irc-clien@chocky.demon.co.uk) left irc: Quit: Bye [23:30] Lunar_Lander (~lunar_lan@p54885EB3.dip.t-dialin.net) left irc: Quit: Lunar_Lander [23:31] sbasuita (~sbasuita@unaffiliated/drebellion) left irc: Read error: Connection reset by peer [23:55] edmoore (~ed@pluto.trinhall.cam.ac.uk) joined #highaltitude. [23:59] Laurenceb (~laurence@host86-141-78-19.range86-141.btcentralplus.com) left irc: Ping timeout: 245 seconds [00:00] --- Sun Feb 28 2010