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[00:15] <Laurenceb_> yessss
[00:15] <Laurenceb_> I think I found some servo winch drums
[00:18] <SpeedEvil> :)
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[07:45] <gordonjcp> morning all
[07:45] <natrium42> hi
[07:45] <gordonjcp> morning natrium42
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[07:47] <jcoxon> morning
[07:48] <gordonjcp> morning jcoxon
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[07:48] <gordonjcp> sounds like robert1971 is having fun with his new radio
[07:48] <natrium42> you can hear him?
[07:48] <natrium42> :P
[07:48] <jcoxon> yeah i'm jealous
[07:48] <gordonjcp> nope
[07:48] <gordonjcp> I was reading the scrollback
[07:49] <gordonjcp> yeah, it's a beast of a rig
[07:49] <jcoxon> i hope he isn't transmitting!
[07:49] <natrium42> hehe
[07:49] <natrium42> i was joking
[07:49] <gordonjcp> I really need something that will do ssb
[07:49] <gordonjcp> and 2m
[07:50] <jcoxon> i'd really like a 10m rig before the trans atlantic season
[07:50] <jcoxon> but its pretty low on my wish list
[07:51] edmoore (n=edmoore@58.124-84-212.ippool.ndo.com) joined #highaltitude.
[07:52] <gordonjcp> well, I'm doing my foundation licence in a couple of weeks, and planning on doing intermediate soon after
[07:52] <gordonjcp> and then bothering the local amateur radio club to run the advanced test after that
[07:53] <jcoxon> hmm umsf have been quiet recently
[07:54] <edmoore> morning all
[07:55] <jcoxon> morning edmoore
[07:57] <edmoore> anyone played with google chrome?
[07:58] <gordonjcp> I would if the download link wasn't broken
[08:02] Action: natrium42 tries
[08:04] <jcoxon> hmmm yeah there is no actual download link
[08:04] <jcoxon> but that said i am on a ma
[08:04] <jcoxon> c
[08:04] <jcoxon> and i don't think they've released it yet
[08:04] <gordonjcp> linux here
[08:04] <natrium42> it's only for windows atm
[08:04] <natrium42> they auto-detect your OS
[08:04] <gordonjcp> yeah, so why isn't there a Windows download?
[08:04] <gordonjcp> that's fucking stupid
[08:05] <natrium42> you can get around it, probably :P
[08:06] <jcoxon> change your browser ID
[08:07] <natrium42> http://www.google.com/chrome/eula.html?hl=en&brand=CHMG&utm_source=en-hpp&utm_medium=hpp&utm_campaign=en
[08:07] <natrium42> here
[08:09] <natrium42> hmm, doesn't install on wine
[08:09] <natrium42> but you can use their offline installer, apparently --> http://gpdl.google.com/chrome/install/149.27/chrome_installer.exe
[08:10] <jcoxon> the multiprocess idea is clever
[08:11] <jcoxon> and it is true that the address bar should really be below the tabs
[08:11] <gordonjcp> ah, it installs
[08:11] <gordonjcp> it's shit
[08:11] Action: gordonjcp plunks
[08:12] <edmoore> lol
[08:12] <gordonjcp> it just crashes all the time
[08:13] <gordonjcp> and also it complains if you try to visit a server running on a "non-standard" port
[08:14] <gordonjcp> "Aw, Snap! Something went wrong while displaying this web page"
[08:14] <gordonjcp> and that's google's own site
[08:14] <gordonjcp> right, well, I'm going to explicitly block Google Chrome from my servers
[08:15] <gordonjcp> I'm deeply offended by euphamisms, and I particularly dislike "Aw, Snap!"
[08:15] <jcoxon> haha, the joys of opensource
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[08:15] <jcoxon> we should take it, fork it and remove the Aw, Snap!
[08:15] <jcoxon> then rerelease :-p
[08:16] <natrium42> GordonChrome?
[08:16] <gordonjcp> that would be netsurf
[08:17] <gordonjcp> that's a nice light browser
[08:17] <natrium42> oh, hard core!
[08:17] <gordonjcp> at some point I'm going to poke it so <TAB> tabs to the next form field though
[08:19] <jcoxon> i made a web browser with webkit once
[08:19] <jcoxon> actually i think its on rubyforge still
[08:20] <edmoore> did it have a porn mode?
[08:20] <edmoore> you could have called that feature Cocks-On
[08:20] <jcoxon> never got that far with it
[08:20] <jcoxon> :-s
[08:20] <edmoore> I love the way they sold that in the chrome comic
[08:21] <edmoore> "So your loved ones don't see the surprise preasant for them in the history"
[08:23] <natrium42> nite
[08:23] <gordonjcp> right, I'm off
[08:23] <gordonjcp> see you all soon
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[09:14] <edmoore> What's a fast way to generate data? Leave the megapixel 1200fps camera running for 45 mins straight
[09:22] <jcoxon> hehe
[09:24] <edmoore> they have a high speed raid array in the column of the wind tunel just to service that thing
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[12:40] <edmoore> fnoble: ping ping ping ping ping
[12:40] <edmoore> adingaling
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[15:02] <edmoore> hi soneil
[15:02] <soneil> morning ed
[15:03] <soneil> did I miss anything this weekend ?
[15:10] <edmoore> Did you hear about riday?
[15:10] <edmoore> Friday*
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[15:10] <edmoore> soneil: ping sorry, got dragged away by skype to the boss
[15:11] <robert1971> edmore what yagi's did you get for the radios can you rememeber?
[15:11] <soneil> I was out of the country friday :/
[15:12] <edmoore> writing a report which is the worst kind. Doing all the statistic analysis, going into great depth, generating 10s of figures, and concluding 'but because the input data you provided followed no statistical distribution, the this monte-carlo analyses is statistically meaningless and cannot be relied upon for decision making'
[15:12] <edmoore> soneil, ok: we launched
[15:12] <edmoore> http://www.nivnac.co.uk/files/HAPSD_NOVA8/HAPS-D_pan1_quarter.jpg
[15:12] <edmoore> had the tracker up and running this time too
[15:13] <edmoore> inc chase car, I understand
[15:14] <soneil> good stuff
[15:14] <soneil> I'm loving the panos
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[15:16] <edmoore> They're lots of fun aren't they
[15:18] <gordonjcp> robert1971: I thoroughly recommend those K5OE 3-ele yagi
[15:19] <gordonjcp> it's easy to build and very effective
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[15:31] <jcoxon> afternoon all
[15:33] <SpeedEvil> afternoon
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[15:42] Action: jcoxon has a new Canon A60
[15:42] <jcoxon> well its not new but its new to me :-)
[15:47] <robert1971> Afteroon sir.
[15:47] <robert1971> New toy then
[15:47] <gordonjcp> funny, we were just talking about that at work
[15:48] <gordonjcp> you can get all manner of little radio modules, GPS modules, sensors and other goodies
[15:48] <gordonjcp> but you don't seem to get just bare usb cameras
[15:48] <robert1971> jcoxon: Was up till bloody 2am playing with radio...
[15:48] <gordonjcp> robert1971: did you hear RS22?
[15:48] <robert1971> gordonjcp: Thanks for that I'll have a look
[15:49] <gordonjcp> fire up gpredict and see what passes are coming over, also look at www.amsat.org
[15:50] <gordonjcp> you should be able to get RS22 on a high pass with just the rubber duck antenna
[15:50] <gordonjcp> it's absolutely *booming*, it's like 2W or something
[16:04] Action: ShellEvil ponders Basil Brushelites.
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[17:50] <edmoore> fnoble: ping
[17:50] Nick change: EI5GTB__ -> EI5GTB
[18:03] <jcoxon> hey edmoore
[18:03] <edmoore> hello thar
[18:04] <jcoxon> hey
[18:25] <edmoore> god I find eagle annyoying sometimes
[18:26] <jcoxon> badger2?
[18:28] <edmoore> yup
[18:30] <natrium42> so eagle is basically... badgering you?
[18:32] <edmoore> if i had the power to kick....
[18:33] <natrium42> hey, don't blame me :P http://dictionary.reference.com/browse/badger
[18:33] <edmoore> right, time for fish and chips
[18:33] <edmoore> I refuse to be badgered by this thing
[18:34] <edmoore> just annoying when parts manufacturers have to make a slightly awkward case quite unnecessarily
[18:34] <edmoore> 'Let's make this part an SSOP16' ...... 'No wait, we could do that, or we could make it a slightly *narrower* ssop16 that won't be in any parts libraries' .... 'hey! great idea man!'
[18:35] <natrium42> haha, true...
[18:35] <edmoore> right, bbiab
[18:35] <natrium42> later
[18:37] <jcoxon> evening natrium42
[18:38] <natrium42> hi jcoxon
[18:39] <ShellEvil> ssop doesn't scare me.
[18:39] <ShellEvil> BGA is the last one that really does.
[18:40] <ShellEvil> In that I have no hope of even making a breakout board.
[18:40] <ShellEvil> Or debugging it if it doesn't solder first time.
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[19:19] <natrium42> Hi Hiena
[19:31] <Hiena> Good evening!
[19:31] <Hiena> Ho things is going up?
[19:32] <Hiena> +w
[19:33] <edmoore> back
[19:33] <edmoore> ShellEvil: it's ok
[19:33] <edmoore> you *might* be suprised
[19:33] <edmoore> depending on requirements
[19:34] <edmoore> if you use vias for pads and solder through, and you don't actually ened a huge quantity of the pins, then you might get away with it
[19:35] <ShellEvil> edmoore: Well...
[19:35] <ShellEvil> It's fine-pitch BGA
[19:35] <edmoore> what's the chip?
[19:37] <ShellEvil> http://slashdot.org/
[19:37] <ShellEvil> wikipedia is _shit_ at this sort of thing.
[19:37] <ShellEvil> err
[19:37] <ShellEvil> sorry
[19:37] <ShellEvil> 100 pin bga
[19:37] <ShellEvil> http://www.st.com/stonline/products/literature/ds/14611/stm32f103vc.pdf
[19:37] <natrium42> jcoxon, seen http://beagleboard.org ?
[19:39] <ShellEvil> 10*10mm with balls on 0.8mm centers.
[19:40] <edmoore> ah yes, the beauty
[19:40] <edmoore> yeah I wouldn't fancy making a breakout for that
[19:40] <edmoore> I kind of like the idea of having an lqfp144 on badger
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[19:40] <edmoore> if fnoble wasn't listening I'd say it's be tempted to switch over to them and re-write a whole load of badger code so we get the DMA
[19:41] <edmoore> seeing as the SPI on the ADCs will be working like crazy
[19:43] <natrium42> ShellEvil, just go with the OMAP :P
[19:43] <natrium42> since you are using BGA already
[19:43] <ShellEvil> natrium42: OMAP gets nastier.
[19:44] <ShellEvil> The ST thingy has an _EASY_ oops mode.
[19:44] <ShellEvil> You have a RS232 bootloader, which you can rescue anything from.
[19:44] <ShellEvil> And no external ROM and RAM makes the design lots simpler.
[19:45] <natrium42> come on, built in DSP :)
[19:46] <ShellEvil> Yeah - well - 0.5mA@2V@125KHz.
[19:46] Action: ShellEvil stabs the lack of an external 1.8V power input.
[19:47] <edmoore> oh beagle board is a tottally different kettle of fish to an stm32
[19:47] <edmoore> may aswell get a gumstix if you're shooting off in that direction
[19:48] <ShellEvil> Well...
[19:48] <natrium42> omap seems to use less power
[19:48] <ShellEvil> STM32 - I figure (and am trying to make) a board with SD+8M RAM (slow) + stm32, for sale for around 15 quid.
[19:48] <ShellEvil> To do various stuff.
[19:49] <edmoore> how can a cortex a8 + a great TI dsp use elss power than a cortex m3?
[19:50] <natrium42> less power than gumstix
[19:50] <edmoore> oh yes
[19:50] <edmoore> it is indeed a lovely board
[19:50] <edmoore> what's the dev environement like?
[19:51] <edmoore> normally TI means a dead end for hobbyists
[19:53] <natrium42> dunno
[19:55] <jcoxon> natrium42, its pretty damn impressive board
[19:55] <jcoxon> and a not bad price at all
[19:55] <natrium42> i wonder how easy it is to connect a camera module to it
[19:55] <natrium42> the omap chip has camera interface
[19:55] <jcoxon> gumstix is going to bring out a cortex board soon
[19:55] <natrium42> verdex has one too, actually
[19:56] <natrium42> jcoxon, cool
[19:56] <jcoxon> natrium42, yeah they are working on the camera interface
[19:57] <jcoxon> its so new in the kernel there aren't any drivers
[19:57] <jcoxon> well there are a few
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[20:37] <robert1971> I now have a tidy desk.
[20:37] <robert1971> Just wanted to share all that effort with someone
[20:39] <ShellEvil> Congratulations!
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[20:39] <ShellEvil> I have a mostly tidy desk too now.
[20:39] <ShellEvil> Though the deeply annoying bastards at Focus have screwed me.
[20:40] <ShellEvil> I found a nice 30l translucent strong container that can be _really_ loaded heavily.
[20:40] <ShellEvil> And stacked to the ceiling.
[20:40] <ShellEvil> And of course, after buying 30, when I'd like another 10, they've discontinued it.
[20:41] <robert1971> ShellEvil: Typical
[20:41] <ShellEvil> Most translucent ones I've found are horribly weak - pick them up wrong and the bits shatter.
[20:42] <ShellEvil> the top grip bits
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[20:58] <robert1971> hi natrium42: Connection issues?
[20:58] <natrium42> rebooted to osx
[20:58] <natrium42> there is no itunes for linux :/
[20:59] <robert1971> I have been working on a NMEA paraser to send tracking data direct.
[20:59] <ShellEvil> GPGGREAT!
[20:59] <natrium42> *parser
[20:59] <natrium42> nice
[20:59] <robert1971> Yep
[20:59] <natrium42> is it working out?
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[21:01] Action: ShellEvil realises the real reason to develop PSK31.
[21:01] <ShellEvil> http://upload.wikimedia.org/wikipedia/commons/2/28/PSK_matrix.jpg
[21:01] <robert1971> Just a quick question as I haven't had time to read the source. When I sent 10 emails in a row to the track@.... All the points were linked weirdly. LEaving me to the conclusin that the order is defined by when they are sent to the server and not using the datum time. Would you agree with that
[21:01] <natrium42> they are added in the order that emails are received
[21:01] <natrium42> since it uses auto increment key for the table of positions
[21:02] <robert1971> ShellEvil: I talked to a radio person about psk31 today and he recommended it for data down link due to it's reliability even when the signal is shaged
[21:02] <natrium42> gps table has gps time and server time, so you can use those to reorder
[21:02] <natrium42> if you need to
[21:03] <robert1971> Will do!
[21:03] <natrium42> bbl
[21:03] <robert1971> ttfn
[21:05] <robert1971> You guys have a lot to answer for on here. I find myself waiting for the repeater to send it's call sign in morse! :)
[21:06] <ShellEvil> psk31 - as numbers - is moderately poor - there are about 9 bits/number.
[21:08] <ShellEvil> Question is if this bothers you enough to encode it more efficiently - or use a nonstandard encoding.
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[21:17] <ShellEvil> But one per 5 min, even just spitting out the whole GPGGA line only takes 25s or so.
[21:25] <gordonjcp> psk31 is intended for *extremely* narrow bandwidth though
[21:25] <ShellEvil> Yes.
[21:25] <ShellEvil> It's only pointful if you're going for ZP I expect.
[21:25] <gordonjcp> it's not really what you're after here
[21:26] <ShellEvil> And you want to pick up a payload mid-atlantic
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[21:35] <natrium42> how did you know that this is what we wanted to do? because we didn't, i tell you!
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[21:37] Action: natrium42 hides
[22:05] <robert1971> For all you radio people out there if I want to interface my radio with the computer do I get one of these or do you have a better idea?
[22:05] <robert1971> http://www.g4zlp.co.uk/unified/DM_DUAL_Channel.shtml
[22:12] <ShellEvil> If that'll work for you, that doesn't sound insane.
[22:12] <ShellEvil> Though USB soundcard may also work.
[22:12] <robert1971> Like the idea of supported under mac linux and win
[22:14] <robert1971> ShellEvil: Thanks for the input... Ordered
[22:14] <ShellEvil> Remember also your rights under the distance selling rules.
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[22:16] <mc-> robert1971, if you have a SSB radio, then you don't need much to use digital modes such as PSK31
[22:16] <mc-> just a sound card connection
[22:16] <ShellEvil> Which he seems not to have realased, and is thereby liable to accept returns free up to 3 months after sale.
[22:16] <ShellEvil> realised
[22:16] <ShellEvil> Including postage.
[22:17] <robert1971> I think i do have SSB it an FT-817ND
[22:17] <mc-> then you should be able to connect up the sound card output to the input on the rig
[22:18] <mc-> you might need an isolating transformer
[22:18] <mc-> plenty of stuff on interfacing to PSK31 on the web
[22:19] <robert1971> I guess I could do it a bit cheaper but this is easy. Pay plug and prey it works ;-)
[22:20] <mc-> however with a sound card you can hear the output and check that first
[22:20] <mc-> I heard the problem with PSK31 is it's easy to overdrive, and splatter
[22:20] <robert1971> Before you send it
[22:20] <mc-> yes, btw I'm G1ZVN
[22:20] <mc-> but haven't been on air for many years
[22:21] <robert1971> I'm about to get on air hopefully.
[22:21] <robert1971> Quite interesting this radio lark... Mor fun for me with data
[22:21] <mc-> good luck
[22:21] <robert1971> Thanks
[22:22] <mc-> I'm trying to PM you
[22:24] <mc-> robert1971, do you get emails at home? I know your company..
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[22:26] <natrium42> bah, i want a good embedded camera module
[22:26] <natrium42> at *reasonable* price
[22:27] <robert1971> Yep
[22:27] <robert1971> My company? Harrison Goddard Foote?
[22:29] <mc-> just emailed you
[22:30] <robert1971> Cool, You do know me !!!
[22:30] <robert1971> I'm the IT Director at HGF
[22:31] <mc-> I replied direct, so I didn't fill up the channel
[22:31] <natrium42> UK is small
[22:31] <robert1971> I'll mention that I chatted to you on here
[22:31] Action: ShellEvil stabs OPSI.
[22:32] <ShellEvil> Why the hell can't they just publish legislation including any patches.
[22:32] <robert1971> CV's a good lad
[22:32] Action: ShellEvil sighs.
[22:33] <mc-> robert1971, guess you don't get beeps when I PM you
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[22:48] <fnoble> hello
[22:48] <natrium42_> edmoore: any ideas on how modern cameras do focusing?
[22:48] <fnoble> edmoore, ping, we keep missing each other
[22:48] <edmoore> fnoble: hi
[22:48] <natrium42_> hey, i need the edmoore
[22:48] <edmoore> did you get email?
[22:48] <fnoble> natrium42, they usually look for contrast
[22:49] <fnoble> edmoore, erm yes, just looking through it
[22:49] <edmoore> natrium42_: i think just with a wee motor moving a lens
[22:49] <edmoore> same as ever
[22:49] <natrium42_> i know you can do it based on image data and move focus until it gives sharp image
[22:49] <natrium42_> oh
[22:49] <natrium42_> so you think they don't use range finders?
[22:49] <edmoore> yes i belive that is the way
[22:49] <edmoore> edge detection
[22:49] <fnoble> natrium42, some do but not common
[22:49] <fnoble> natrium42, as you need two sets of optics
[22:50] <natrium42_> true
[22:50] <edmoore> the old polaroids certainly do
[22:50] <natrium42_> ultrasonic is another option
[22:50] <edmoore> but not really any more
[22:50] <fnoble> natrium42, my dad has a G2 rangefinder at h0ome, awesome camera
[22:50] <fnoble> rangefinding is so good, just expensive
[22:50] <natrium42_> i am looking at making my own camera
[22:51] <edmoore> my old nikon digital had criss-crossed lasers for low light focussing - def an edge detection feature
[22:51] <natrium42_> wow, nice
[22:51] <fnoble> natrium42, digital or film?
[22:51] <natrium42_> digital
[22:51] <natrium42_> with proper optics
[22:52] <fnoble> sweet
[22:52] <natrium42_> i want to use one of those C-mount security camera len ses
[22:52] <natrium42_> with focusing and zoom motors
[22:52] <fnoble> sounds like an interesteing project
[22:53] <natrium42_> yes
[22:53] <robert1971> having an early one
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[22:54] <natrium42_> canon removing remote capture is pushing me to do it
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[22:57] <natrium42__> what's going on with my connection? :/
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[23:15] <fuzzylugnuts> Heya
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[23:16] <fnoble> fuzzylugnuts, guess what i got today :)
[23:17] <fuzzylugnuts> laid?
[23:18] <fuzzylugnuts> : 3
[23:18] <fuzzylugnuts> a survey meter?
[23:19] <SpeedEvil> fnoble: a jumbo bag-sealer?
[23:20] <fnoble> fuzzylugnuts, an MCA :D
[23:20] <fuzzylugnuts> ENVY!
[23:21] <fuzzylugnuts> which one?
[23:21] <fnoble> hehe, was a steal off ebay
[23:21] <fnoble> its just the ADC ish bit actually, need to make up an interface to a PC to read it
[23:21] <fnoble> the guy still has one left
[23:21] <fuzzylugnuts> oooh
[23:21] <fuzzylugnuts> link?
[23:22] <SpeedEvil> I have a MCA machine I think.
[23:22] <SpeedEvil> At least, I don't think I've thrown it out.
[23:22] <fnoble> http://cgi.ebay.co.uk/ORTEC-920-16-SPECTRUM-MASTER-MODULE_W0QQitemZ360084694325QQcmdZViewItem?_trksid=p3286.m20.l1116
[23:23] <fnoble> SpeedEvil, really?!
[23:23] <fnoble> SpeedEvil, what model? i would be interested in getting a morew proper one
[23:23] <fuzzylugnuts> fnoble: http://www.ortec-online.com/electronics/mca/920.pdf
[23:24] <SpeedEvil> Micro Channel Architecture
[23:24] Action: SpeedEvil suspects it may be a different MCA.
[23:24] <SpeedEvil> pre-PCI bus.
[23:24] <fnoble> we are talking multi channel analyser
[23:24] <SpeedEvil> In competition with VLB, but lost due to overcomplexity.
[23:24] <fnoble> for spectroscopy
[23:25] <SpeedEvil> optical?
[23:25] <fnoble> (looking at the energy spectrum of a radiation source)
[23:25] <fuzzylugnuts> fnoble: looks like you can just connect to it via old coax style ethernet
[23:25] <fnoble> well, the mca is usually detector agnostic
[23:25] <fuzzylugnuts> yeah
[23:26] <fnoble> fuzzylugnuts, this is the 920, not the 920E, basically the same only without the ethernet port
[23:26] <fuzzylugnuts> oooh, snap.
[23:27] <fuzzylugnuts> wow, lots of inputs
[23:27] <fnoble> SpeedEvil, they are often used with a PMT which i guess you could call optical, but the PMT is usually recording light from a scintillator crystal
[23:27] <SpeedEvil> k. So higher energies.
[23:27] Action: SpeedEvil goes back to reading SDRAM timing diagrams.
[23:28] <fuzzylugnuts> fnoble: looks like you just connect via rs232
[23:28] <fnoble> i hope so
[23:28] <fnoble> although i fear the rs232 may be only for setting up etc.
[23:29] <fuzzylugnuts> the dual port memory plug looks like it needs filling
[23:29] <fnoble> yeah, im hoping that is just some bus where you give it an address and it give you back a word of data
[23:29] <fuzzylugnuts> yeah
[23:29] <fuzzylugnuts> good luck with it
[23:30] <fnoble> that wouldnt be too hard to interface with
[23:30] <fuzzylugnuts> too bad there ins't a better manual on the site
[23:30] <fnoble> fuzzylugnuts, ever had dealings with ortec?
[23:30] <fnoble> fuzzylugnuts, are they good at supplying documentation?
[23:32] <fuzzylugnuts> fnoble: I've been on a tour in their main office and crystal growing facility, ordered a preamp off them, but havn't called the for support
[23:32] <fuzzylugnuts> *them
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[23:33] <Laurenceb_> hi all
[23:33] <fuzzylugnuts> HI
[23:33] <SpeedEvil> HELLO.
[23:33] <Laurenceb_> I've just been working on my smps board, almost done :P
[23:33] <SpeedEvil> :)
[23:33] <Laurenceb_> caps lock?
[23:34] <Laurenceb_> one small issue, how to solder a thermal fuse?
[23:34] <fuzzylugnuts> one of those polymer ones?
[23:34] <Laurenceb_> its a 111C fuse, so rather easy to set off with 215C lead free solder
[23:34] <Laurenceb_> yes
[23:34] <fuzzylugnuts> the should reset when they cool down
[23:35] <fuzzylugnuts> check the datasheet
[23:35] <Laurenceb_> how do they manage that?
[23:35] <SpeedEvil> They however are never the same.
[23:35] <Laurenceb_> rapid dont have the datasheet IIRC
[23:35] <SpeedEvil> these are 'polyfuse' ?
[23:35] <SpeedEvil> or similar?
[23:35] <fuzzylugnuts> Laurenceb_: do you have any part number or link?
[23:35] <Laurenceb_> just a sec
[23:36] <SpeedEvil> The initial resistance is about 2-3 times worse after you've tripped them unfortunately.
[23:36] <Laurenceb_> http://www.rapidonline.com/Electronic-Components/Sensors/Thermal-Sensors/Thermal-fuses/64691/kw/thermal%20fuse
[23:36] <SpeedEvil> not all auto-reset
[23:36] <Laurenceb_> oh hang on
[23:37] <Laurenceb_> theres a pdf... I'm sure it wasnt there before
[23:37] <fuzzylugnuts> ok
[23:37] <Laurenceb_> oh 404 error
[23:37] <fuzzylugnuts> laaaaaaaaame
[23:37] <Laurenceb_> I remember now
[23:38] <fuzzylugnuts> which partnumber?
[23:38] <Laurenceb_> googling the part number doesnt get you very much
[23:38] <Laurenceb_> TAMH3F-L
[23:39] <fuzzylugnuts> fnoble: that is cheap!
[23:39] <fnoble> fuzzylugnuts, yeah :)
[23:39] <fnoble> fuzzylugnuts, they guy has one more to sell too, iuw
[23:40] <fuzzylugnuts> Yeah, I'm looking at it
[23:40] <fuzzylugnuts> I needed it for work, and I found 2 that they had from old equipment, it still works
[23:40] <Laurenceb_> got it http://www.rapidonline.com/netalogue/content/downloads/CatPDFs2007/0571-0590_Sensors.pdf
[23:40] <Laurenceb_> page 9, its non resetable
[23:41] <fuzzylugnuts> ahhh
[23:41] <fuzzylugnuts> bummer
[23:41] <fnoble> Laurenceb_, SMT or legs?
[23:41] <Laurenceb_> legs
[23:41] <Laurenceb_> do I just have to use pliers?
[23:41] <Laurenceb_> i.e. long nosed pliers on the legs
[23:41] <fnoble> could you clip something heat sinky between the leg and fuse?
[23:41] <fuzzylugnuts> I'd keep it cool with a wet tissue or something
[23:41] <Laurenceb_> hmmm a water bath :P
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[23:42] <Laurenceb_> the problem is I need quite short legs on it as it has to fit by the side of the IC
[23:43] <SpeedEvil> bend legs over to hold into pcb, clip them, solder, while cooling with tissue.
[23:43] <SpeedEvil> solder it fast and tehre shouldn't be an issue.
[23:44] <Laurenceb_> well I have a few so I can afford to mess up
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[23:44] <Laurenceb_> I'm planning to epoxy it to the IC
[23:44] <Laurenceb_> good idea?
[23:44] <fnoble> Laurenceb_, why do you need a thermal fuse? be a man!
[23:45] <fnoble> : )
[23:45] <Laurenceb_> hehe
[23:45] <Laurenceb_> well this futaba servo has the capability to destroy the entire payload
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[23:46] <Laurenceb_> I have enough thermal resistance to keep it warm on ascent
[23:46] <fuzzylugnuts> gar. UPS didn't like me solder with it.
[23:46] <Laurenceb_> but if it starts acting up on descent or there is a serious firmware bug, the enclosure could overheat
[23:48] <Laurenceb_> the thermal fuse should go off first if its thermally bonded to the smps
[23:49] <SpeedEvil> It's not powerful enough.
[23:49] <SpeedEvil> It should have the capability to destroy the entire world!
[23:49] <Laurenceb_> ha
[23:49] <fuzzylugnuts> :P
[23:54] <Laurenceb_> are the +ive sides of smd tantalum caps banded?
[23:55] <fuzzylugnuts> have a datasheet for them?
[23:55] <Laurenceb_> I was just asking generally
[23:55] <fuzzylugnuts> ok
[23:56] <SpeedEvil> they have red/browny bands on +
[23:56] <SpeedEvil> And they act like quite good diodes.
[23:56] <Laurenceb_> hehe
[00:00] --- Thu Sep 4 2008