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[15:29] natrium42: http://blog.makezine.com/archive/2008/02/how_to_build_a_thermal_te.html [15:29] natrium42: don't know if you'd seen that yet [15:41] edmoore (n=edmoore@pomegranate.chu.cam.ac.uk) joined #highaltitude. [15:43] edmoore: greetings [15:44] edmoore: its friday! got a pub crawl scheduled? [15:51] jcoxon (n=jcoxon@host86-129-61-253.range86-129.btcentralplus.com) joined #highaltitude. [15:52] Laurenceb (n=Laurence@fwnat-pub-1.physics.ox.ac.uk) joined #highaltitude. [15:52] hi all [15:52] Laurenceb: greetings [15:52] hi [15:53] Laurenceb: http://blog.makezine.com/archive/2008/02/how_to_build_a_thermal_te.html [15:53] cool thanx [15:53] might be doing that next week [15:53] I'm getting annoyed by this pressure sensor [15:54] the pump causes the pressure across the filter to fluctuate all over the place [15:54] flowolf (n=flowolf@79.3.234.254) joined #highaltitude. [15:54] and low pass filtering isnt a brilliant solution [15:56] the good news is everything seems to be working and talking ok [15:56] just the phone to go on now [15:56] hey Laurenceb [15:57] sounds like it going well then [15:57] it looks a mess but yes [15:57] good deal [15:57] there are cables everywhere :P [15:58] for some reason my supervisor has decided to go home and work on his rally car :S [15:58] hehe [15:58] i've just got back [15:58] i'd just as soon go to the pub [15:59] going to stick my Sharp IR sensor on to my robosapien [15:59] arggg I just dropped a bolt into the HV supply unit :( [15:59] then sort out the code to make him avoid obstacles and let him wander round hte flat [15:59] jcoxon: you hack a different cpu into it? [15:59] yeah [15:59] Laurenceb: smoked? [16:00] jcoxon: what cpu? [16:00] its all turned off [16:00] Laurenceb: oh good [16:00] but now it has to be dismantled to get it out [16:00] its being piggybacked with an arduino [16:00] jcoxon: ahh [16:00] i hate HV supplies - nearly killed myself with the 37.5Kv in my projector [16:00] jcoxon: i've wanted to get one of those robosapiens and hack it up with a hammer module [16:01] that would be cool [16:01] jcoxon: yea, i had a crt discharge on my once, thought i was gonna die [16:01] all the arduino is doing is interfacing to the robot, the digital compass and range finder and sending it all back over a radio modem [16:01] got to love the old school 3 crt tube projectors [16:01] got it for ?50 off ebay -repaired it [16:02] its still as good as most projectors on the market [16:02] Action: Laurenceb fiddles with cables tangling all over his desk [16:03] I remember when I was about 4 and they were cool :P [16:04] they still are [16:04] well i think they are [16:04] and i'm not going to complain for ?50 [16:04] for a near HD projector [16:04] :P [16:08] whep finally got it out [16:10] right back to ssh, theres only one lan socket on here [16:11] then i'll be heading home, but I might be back later, cya [16:11] Laurenceb (n=Laurence@fwnat-pub-1.physics.ox.ac.uk) left irc: [16:17] Laurenceb (n=Laurence@fwnat-pub-1.physics.ox.ac.uk) joined #highaltitude. [16:17] hey again [16:18] success :D [16:18] the HV supplies work and theres an ionisation current [16:18] just need to clean up the pressure metering [16:19] photos in 5 [16:23] http://wiki.ukhas.org.uk/projects:aerosol [16:25] and time 4 me to go too cya all [16:26] Laurenceb (n=Laurence@fwnat-pub-1.physics.ox.ac.uk) left irc: [16:47] hi prpplague [16:47] sorry, was dealing with something [16:47] np [16:47] my car's been broken into [16:47] sigh [16:48] hey edmoore [16:48] police are coming over [16:48] oh crap [16:48] hi jcoxon [16:48] edmoore: doh [16:48] still, prpplague, not quite a pub crawl this evening, but 'half way hall' which is a formal dress by slightly boozey evening meal for my year to celebrate being half way through our degrees [16:49] I hope the police have come and gone by then, though [16:49] edmoore: ahh sounds fun [16:51] yay half way hall [16:56] flowolf (n=flowolf@79.3.234.254) left irc: "Leaving" [17:23] borism (n=boris@195-50-200-97-dsl.krw.estpak.ee) joined #highaltitude. [17:23] edmoore (n=edmoore@pomegranate.chu.cam.ac.uk) left irc: Read error: 113 (No route to host) [17:23] edmoore_ (n=edmoore@pomegranate.chu.cam.ac.uk) joined #highaltitude. [17:24] MetaMorfoziS (n=khmhm@3e44bc6f.adsl.enternet.hu) joined #highaltitude. [17:45] Laurenceb (n=laurence@dhcp37-235.sthughs.ox.ac.uk) joined #highaltitude. [17:45] hi again folks [17:45] Laurenceb: greetings [17:47] that was quite a productive day :p [17:48] I got an ioniser current of 0.15uA, the target is a little under 1uA, but thats with the SEM targets fitted, which decreases the electrode seperation [17:50] http://wiki.ukhas.org.uk/_media/projects:dscn0998.jpg just the batteries and phone to go on the middle shelf [17:54] theres a company in Manchester making the SEM targets, they will be gold plated and have an attachment on the bottom so they can easily be loaded into the SEM [17:59] Hiena (n=Hiena@81.93.195.181.datatrans.hu) joined #highaltitude. [17:59] Good evening! [18:04] hello [18:15] prpplague: that link is interesting [18:16] we'll probably make something similar next week for testing [18:23] flowolf (n=flowolf@host254-234-dynamic.3-79-r.retail.telecomitalia.it) joined #highaltitude. [18:41] MetaMorfoziS (n=khmhm@3e44bc6f.adsl.enternet.hu) left irc: Read error: 110 (Connection timed out) [19:02] bbl [19:08] Simon-MPFH (n=simon@phantom.mpfh.co.uk) left irc: "Leaving" [19:10] mc- (n=mfcastle@cpc4-glfd1-0-0-cust538.glfd.cable.ntl.com) joined #highaltitude. [19:11] jcoxon, I found an Arduino clone http://www.moderndevice.com/RBBB.shtml [19:34] Laurenceb ? [19:35] mc-: Laurenceb said he be back in a little while [19:38] mc- (n=mfcastle@cpc4-glfd1-0-0-cust538.glfd.cable.ntl.com) left irc: [20:19] flowolf (n=flowolf@host254-234-dynamic.3-79-r.retail.telecomitalia.it) left irc: "Leaving" [20:19] flowolf (n=flowolf@host254-234-dynamic.3-79-r.retail.telecomitalia.it) joined #highaltitude. [21:30] prpplague (n=dave@mail.americanmicrosystems.com) left #highaltitude ("Leaving"). [21:36] Hiena (n=Hiena@81.93.195.181.datatrans.hu) left irc: "-=Alkoholmentes-sör és repülõgép-szimulátor, biztos út a guminõ felé=-" [22:59] hello again [23:00] hey Laurenceb [23:00] I've been watching this: http://www.imdb.com/title/tt0119079/ [23:00] dont get it :( its like the scriptwriters couldn't make up their minds where it was going [23:01] i don't remember watching that version [23:02] you've seen it? [23:02] not that version i think [23:02] ok [23:02] this version was... well pretty bad [23:02] it's hollywood :P [23:03] btw, i put my robot back online --> http://natrium42.com/robot/ [23:03] it was all over the place, and had the impression of a very disjointed/non-existent plot [23:03] cool, taking a look [23:03] left view doesn't work since i broke my camera on halo1 :P [23:04] ooh works in ubuntu :P [23:04] of course [23:04] it's flash and javascript [23:04] is it working? [23:04] you can switch between two cameras using Top/FP [23:04] the view isnt changing... [23:04] looks like you timed out or something [23:05] try reconnecting [23:05] hmm the page seems to have died :P [23:06] perhaps my webhost is being slow again [23:06] ah I'm not seeing the live stream [23:07] I'm using gnash [23:07] aah, i don't know whether gnash works [23:07] i am using the official flash player on ubuntu [23:07] 32bit? [23:07] yep [23:07] ah I'm using 64 [23:07] i see :P [23:08] stupid adobe [23:08] how often does the snapshot update? [23:08] it doesnt seem to have moved... [23:08] you mean the one on the left? [23:09] yes [23:09] that camera is broken [23:09] lol ok [23:09] so it doesn't update :P [23:09] only two cameras work atm [23:09] oh well has it moved? [23:09] one on the bot and one webcam [23:09] it works for me [23:09] cool [23:10] looks like I'd need a decent flash player to test it [23:10] i wanted to buy another of those old canon cameras [23:10] but local shops don't carry them anymore :( [23:10] but impressive work :D [23:10] only those lame 7MP and 8MP cams [23:11] ebay to the rescue? [23:12] hmm, interesting --> http://cgi.ebay.com/DICAPAC-WP500-Canon-Powershot-A510-A520-A530-A540-A550_W0QQitemZ330213056412QQihZ014QQcategoryZ50506QQssPageNameZWDVWQQrdZ1QQcmdZViewItem [23:13] could fill it with polyurethane for cold protection [23:13] nice [23:14] what happened to the ukhas front page? first the wiki link moved to the right of the menu bar, now the menu bar isnt aligned correctly [23:15] looks fine to me [23:15] perhaps jcoxon changed the design a bit? [23:16] jcoxon: are you running the site now? [23:16] oh, he was not? [23:16] phatmonkey was [23:17] aah, i see [23:17] just ignore me then :) [23:17] ooh you can drag a URL onto the taskbar [23:17] linux is cool [23:18] or "panel" as it seems to be called [23:19] hmm I need a way to solve the pressure sensor problems... the output oscillates all over the place [23:19] noise? [23:19] no, its from the pump [23:19] I thought it was EMI yesterday, so this morning I made a new preamp [23:20] but it seems noise was only a small part of the problem, and the pump is causing acoustic noise in the pipes [23:20] thats confusing the pressure sensor [23:20] the output oscillates +-10% [23:22] the control loop works up to about 50% of the design range, then the sensor output appears to sync with the interrupt on the AVR and it goes mad [23:23] theres three solutions, 1) plumbing based 2) analogue filtering 3) digital filtering on avr [23:27] I prefer analogue filtering [23:28] have you seen the latest photos? [23:35] I've got a photo of one of the wind sensors: http://imagebin.ca/view/e3uevh.html [23:40] cool [23:40] is it ultrasonic? [23:42] no, its resistance based [23:42] that top is a plastic foam tube with kapton film wrapped round [23:43] that heated with a current of a few ma, then the resistance changes with temperature, theres an opamp circuit that keeps the resistance constant [23:44] and the current is related to wind and atmospheric temperature, theres three elements, so it gives you wind direction, speed, and temperature [23:45] that thing is about 3mm long ! [23:47] its going on the top of exomars, theres another guy working on the electronics, but thats on a breadboard at the moment, they're testing it in a windtunnel [23:49] the flight version of the tronics will use gold bonded bare die opamps from AD on a ceramic substrate, in a little gold and indium carrier soldered on the bottom of there [00:00] --- Sat Feb 23 2008