[00:02] <mfa298> I'm not sure just giving the name helps much with understanding what's happening.
[00:03] <mfa298> However JSON is just a way of formatting data that an application can use (it's what spacenear.us uses to display the tracks etc on the map).
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[00:04] <mfa298> The application is probably right to check that the mime type matches what it's expecting - although possibly ought to accept text/unknown as well as checking for JSON/XML types.
[00:04] <WillTablet> mfa298: I think it's just that he doesn't want kids accessing any old website through yousrc
[00:04] <mfa298> The server should possibly be using a better mime type than text
[00:06] <WillTablet> Right
[00:06] <WillTablet> Might ask my teacher if I can rewrite it in python
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[00:30] <MLow> found a fork of multimon someone made
[00:31] <MLow> and they were kind enough to include source and windows binary
[00:34] <MLow> can this not be included into dl-fldigi?
[00:38] <Darkside> er
[00:38] <Darkside> doubt it
[00:38] <Darkside> as it would involve having gnuradio as a dependency
[00:38] <Darkside> and gnuradio is a gigantic dependency
[00:41] <MLow> really?
[00:41] <MLow> im looking at the source and compiled multimon fork and it's quite small
[00:45] <Darkside> still, integrating it with dl-fldigi would probabl yb quit difficult
[00:45] <Darkside> easier to hav it separat and use audio pipes
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[00:48] <mfa298> probably not worth it as the upstream fldigi is getting some ax.25 decoder stuff anyway
[00:48] <mfa298> although the rtty decoding seems to be going downhill
[00:49] <Darkside> this is why we're kind of pushing a move to MFSK modes
[00:49] <Darkside> well, kind of why anyway
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[05:02] <heathkid> *thanks* to whoever fixed me up..
[05:02] <heathkid> good night
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[12:13] <Chetic> does anybody know of an altimeter that handles 30km besides MPL115A2?
[12:14] <Chetic> preferably i2c
[12:16] <mattbrejza> well mpl115a2 doesnt handle 30km
[12:16] <mattbrejza> "50 to 115kPa"
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[12:16] <mattbrejza> http://uk.farnell.com/freescale-semiconductor/mpxm2102as/ic-sensor-pressure-14-5-psi/dp/1457164?Ntt=MPXM2102AS goes to 0Pa however
[12:17] <Chetic> oh heh, good thing I couldn't get it to work then
[12:17] <Chetic> is the GPS accurate enough at 30km though?
[12:17] <Chetic> I have a ublox max-6
[12:18] <SpeedEvil> GPS is quite accurate.
[12:18] <mattbrejza> its fine for altiude
[12:18] <SpeedEvil> IIRC the ublox will work fine at that altitude.
[12:18] <Chetic> any idea how accurate?
[12:18] <Chetic> I've heard altitudes can be way off with GPS
[12:18] <Chetic> and atmospheric pressure sensors are used to improve accuracy
[12:19] <Chetic> as well as getting a fix
[12:19] <Chetic> faster
[12:19] <SpeedEvil> mattbrejza: It's not.
[12:19] <SpeedEvil> mattbrejza: It goes to 20mbar. Read the datasheet
[12:19] <SpeedEvil> The 0mbar variant is the differential one
[12:19] <SpeedEvil> How much that's a qualification issue ...
[12:20] <mattbrejza> which one 20mbar?
[12:21] <SpeedEvil> mattbrejza: the differential one is rated to 0mbar. The absolute pressure variant only goes to 20mbar guage.
[12:22] <Chetic> SpeedEvil: are you saying gps is not fine for altitude?
[12:22] <SpeedEvil> It's an error in farnells table.
[12:22] <SpeedEvil> Chetic: Some GPSs are not. The ublox is fine.
[12:22] <mattbrejza> i linked to the differential one though?
[12:22] <Chetic> alright
[12:23] <fsphil> ublox is fine but it needs to be configured for flight mode
[12:23] <gonzo_> there are two questions there, what is the altitude error in gps and will a specific gps module actually operate at high altitudes
[12:23] <fsphil> by default it won't work at 30km
[12:25] <SpeedEvil> mattbrejza: no, you linked to the absolute one. The problem is going and reading the spec sheet - the spec sheet has the absolute and the differential one. And it's obvious that the farnell person - or whoever - has typed in the minimum pressure from the wrong one.
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[12:25] <mattbrejza> oh i thought you ment differnetial signal out
[12:26] <Chetic> I keep hearing "GPS is fine" but what I'm worried about is accuracy
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[12:27] <gonzo__> Chetic, some gps units ware set to not work above 18km alt. A limitiation imposed by the governments. But the ublox units will work, if commanded into the correct mode
[12:28] <Chetic> -_-
[12:28] <Chetic> that's why I got the ublox
[12:28] <Chetic> my question is about altitude accuracy
[12:29] <Chetic> if I need a pressure sensor or not
[12:29] <gonzo__> there is a field in the nmea data for VDOP, whioch is an estimated error on the alt reading
[12:29] <gonzo__> I suspect gps will be accurate enough
[12:30] <mattbrejza> pressure sensors are good for correcting changes in altitude but have offset errors that will probably be more than the gps error
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[12:31] <fsphil> would a pressure sensor be sensitive enough to detect much change at that sort of altitude? I don't think the pressure difference per metre will be that much
[12:32] <Chetic> what do you people use?
[12:32] <Chetic> I'm not trying to extend the field, just get up there, take a pic and know at what altitude the pic was taken
[12:32] <daveake> GPS is pleeeeenty good enough for that
[12:33] <Chetic> thank you very much :P
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[12:35] <gonzo__> out of interest, what's the alt/pressure rate? Finger in the air (pun) about 100ft/mb sounds about ballpark
[12:36] <gonzo__> (sibot is asleep!)
[12:37] <mattbrejza> SpeedEvil: we flew one of those pressure sensors last time and it seemed to work below 20mBar (just been comparing its data to what the theory would suggest)
[12:38] <SpeedEvil> Well - the parts however nice can rarely read the datasheet. :)
[12:38] <SpeedEvil> As above - it may simply be they only tested it to 20mb
[12:38] <mattbrejza> yea would seem perhaps we got lucky with this one
[12:39] <mattbrejza> it needs a calibration really for the offset error
[12:48] <gonzo__> and for altitude detirmination wit will be a localised offset cal
[12:50] <gonzo__> I did some work with silicon strain gauge sensors when they were reasonably new
[12:50] <mattbrejza> i just wanted it to output pressure, but it went negative at the top of the flight
[12:50] <gonzo__> must have been going so fast you got a venturi effect!
[12:51] <gonzo__> the first low pressure sensors were so delicate that it was not possible to ship them by courier
[12:52] <gonzo__> we were all aware of the, but prucasing still ordeered the sensors by courier
[12:52] <gonzo__> purchasing
[12:52] <mattbrejza> whoops
[12:52] <gonzo__> never uunderestimate the power of human stupidity
[12:53] <mattbrejza> probably wouldnt survive a balloon flight
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[12:54] <gonzo__> once the geometry of the sensor waffer was changed they were great.
[12:55] <gonzo__> the early ones would stand launch, but you wouldn'ty want to trust it post burst
[12:56] <mattbrejza> a bit pricy too id guess
[12:57] Nick change: KipK_away -> KipK
[12:57] <gonzo__> actually not that bad. Under a tenner (20yrs ago) for the raw sensor
[12:57] <mattbrejza> yea i was expecting somewhat more
[13:00] <gonzo__> when the more robust ones came out I wasdesigning a micro-manometer (4mb from mem). And going around the trade show to find a lab meter for the production calibration. It was fun to see them squirm when they realised we were about to launch a budget meter that was close to their manyk£ lab instruments, when I gave the the specs
[13:00] <gonzo__> (having cleared it with the biosses to let the cat out)
[13:01] <mattbrejza> heh
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[13:04] <SpeedEvil> :)
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[13:08] <Lunar_LanderT> hello
[13:16] <craag> Afternoon Lunar_LanderT
[13:16] <Lunar_LanderT> how's life?
[13:18] <craag> Good :)
[13:19] <craag> Finally got all three bands 23cm/70cm/2m up on the websdr :D
[13:19] <craag> http://websdr.suws.org.uk/
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[13:21] <SpeedEvil> :)
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[13:22] <Lunar_LanderT> cool!
[13:23] <craag> Took a lot of messing around with USB drivers and the like...
[13:23] <mattbrejza> java :(
[13:23] <craag> libusb doesn't appear to like rtlsdrs very much
[13:23] <craag> mattbrejza: I know
[13:23] Action: craag hangs head in shame
[13:23] <Darkside> its not like you can do anything about it
[13:23] <craag> nope
[13:24] <mattbrejza> do you have the soruce for it?
[13:24] <craag> nope
[13:24] <craag> just lovely non-verbose binaries
[13:24] <Darkside> mattbrejza: the guy that coded it wont releas the source
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[13:25] <mattbrejza> cant easily attach a rtty decoder then :(
[13:25] <Darkside> apparnetly in the early days it was opn source
[13:25] <Darkside> but its changed a lot since then
[13:25] <Darkside> and there is a HTML5 frontend
[13:25] <Darkside> it just hasnt been released to evryone yet
[13:26] <craag> Darkside: I have a feeling that's well tied into his GPU-accelerated version...
[13:26] <mattbrejza> could then write a rtty decoder in js and get them to work together?
[13:26] <craag> yep you could
[13:26] <Darkside> craag: possibly, im not sure about that
[13:26] <Darkside> its just th eclient-side stuff
[13:26] <Darkside> not server-side
[13:28] <craag> Darkside: There's a fair bit of change on the server side for it though, and it's probably very much mixed with his gpu changes. It would explain why he's hesitant about promising to release it.
[13:28] <Darkside> mm ok
[13:28] <craag> (the HTML5 version doesn't push arbitrary data over the same port as HTTP)
[13:28] <Darkside> we'v got it running on a cubieboard here
[13:29] <Darkside> works fine with a funcube dongle pro plus
[13:30] <craag> Yeah I've run it at home with my fcdpp
[13:30] <mfa298> I asked about the software when his rx was only dualband ugly bug and it wasn't open then.
[13:31] <craag> It's also annoyingly single-threaded
[13:31] <Darkside> we're intending to set up a multi-band HF wbsdr at a nice low-noise site
[13:31] <craag> We've got 60% load on one core, nothing on the other.
[13:31] <craag> (and supposed to be adding more bands)
[13:31] <Darkside> mm thats a pain
[13:32] <Darkside> we havent hit 40% yet with the cubiboard
[13:32] <Darkside> but thats a singl eband
[13:32] <craag> and 200khz
[13:32] <Darkside> and not a rtlsdr
[13:32] <Darkside> yeah
[13:32] <craag> this is 6mhz
[13:32] <Darkside> yup
[13:32] <Darkside> much scarier
[13:32] <Darkside> we'd love to do a full HF SDR
[13:32] <Darkside> but we cant
[13:32] <Darkside> as he hasnt rleased anything
[13:33] <craag> We're hoping add 4m, 6m. And then possibly an LF one too.
[13:33] <Darkside> heh cool
[13:33] <craag> As we have an unused well next to the shed.
[13:33] <Darkside> what antennas ar you going to use though?
[13:33] <Darkside> you'd want some kind of horizontal loop for 6m
[13:34] <Willdude123> iPython notebook really seems rather fabulous
[13:34] <craag> I'm not sure what the plan is for that.
[13:34] <craag> (The other 2 guys do the RF, I do the software)
[13:34] <Darkside> craag: all the DX 6m stuff is horizontal
[13:34] <Darkside> so you really want a horizontal antenna
[13:34] <craag> Yeah
[13:34] <Darkside> i dunno what the standard DX call frquencis are in the UK
[13:34] <craag> We've got a couple of helix-dipoles for 2m and 70cm for mixed polarisation.
[13:34] <Darkside> around here its 50.110MHz
[13:35] <mfa298> Halo or similar shouldn't be too hard to do for 6m.
[13:35] <Darkside> yup
[13:35] <Darkside> just look at what the 6m beacons run
[13:35] <mfa298> although mounting might be more interesting
[13:35] <craag> We have some trees to run a loop
[13:36] <Darkside> craag: a 6m loop is not big
[13:36] <Darkside> http://www.hamuniverse.com/6mloop.html
[13:36] <craag> There's a lot of plans and fallback plans.
[13:36] Nick change: aadamson_ -> aadamson
[13:36] <craag> changes from week to week :P
[13:37] <craag> Current proirity is to remove the intel ethernet switch that's causing those lovely lines on 2m.
[13:38] <Darkside> ahh yes... noise reduction
[13:38] <mattbrejza> Al foil the everything
[13:38] <mattbrejza> although guessing already in a metal box
[13:38] <craag> Each of the dongles has copper foil over the RF stage
[13:39] <craag> and is in a metal box
[13:44] <Laurenceb> copper foil is much more usable for shielding
[13:45] <mattbrejza> shame you cant buy it from a supermarket
[13:45] <craag> Most ironic thing is that whenever conditions are good on 70cm, the 70cm rtlsdr gets completely wiped out by the radar at fylingdales. (Which is the cause of the horizontal line with 2 peaks you see occasionally.)
[13:45] <craag> Becomes unusable
[13:45] <mattbrejza> what freq is the radar?
[13:46] <craag> Very variable, but is known to often tx in the 400-440 range.
[13:46] <mattbrejza> hmm thought it would be fixed
[13:49] <craag> *to often cause interference in the 400-440 range
[13:49] <craag> No idea what it's freq is
[13:50] <mattbrejza> ah right
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[13:52] <Darkside> your military sucks
[13:53] <Darkside> around here, the radars actively *avoid* amateur radio bands
[13:54] <Darkside> but the OTHR here was dsigned mostly by amateur radio operators
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[14:03] <YO9ICT> Hi, can someone help me with the parser ? I'm testing a tracker and I cannot get it to show on the map
[14:04] <x-f> ValueError: Incorrect number of fields (got 9, expect 12)
[14:04] Last message repeated 1 time(s).
[14:04] <x-f> it means your payload doc is wrong
[14:04] <x-f> or outdated
[14:04] <daveake> http://habitat.habhub.org/logtail/
[14:04] <YO9ICT> Yes, I see that
[14:05] <daveake> So, modify the payload doc to match reality
[14:06] <YO9ICT> I have 9 fields, not 12..
[14:06] <YO9ICT> $$$$YO9ICT,54,14Ø6Ø7,44.434978,26.Ø55321,197,6,11,1.19,11*A317
[14:06] <daveake> Yes, but the payload doc must be set up for 12
[14:07] <ibanezmatt13> Check the payload doc, it should be quite clear
[14:07] <YO9ICT> I also have 9 fields on the payload doc
[14:08] <daveake> No you don't
[14:08] <daveake> 12 --> http://imgur.com/mbvAQoz
[14:08] <ibanezmatt13> I see you have two payload docs for different things. Maybe delete one?
[14:08] <YO9ICT> This is another tracker
[14:09] <YO9ICT> the one that I test now has the doc named YO9ICT_test
[14:09] <ibanezmatt13> Well that one has 12, this one now you're testing has 9. So delete the one that's not got _test in the title
[14:09] <mattbrejza> the name has to match the callsign
[14:09] <x-f> _test is for callsign CHEAPO, not YO9ICT
[14:09] <daveake> thuis ^
[14:09] <daveake> -u
[14:09] <mattbrejza> ignore me :P
[14:09] <ibanezmatt13> and me
[14:10] <daveake> but not x-f :p
[14:10] <YO9ICT> understand
[14:10] <YO9ICT> a mom
[14:12] <YO9ICT> how can i delete one doc?
[14:12] <mattbrejza> just create a newer one
[14:12] <mattbrejza> (you cant delete)
[14:12] <YO9ICT> Yes, but the old will remain with the same callsign as the new one
[14:13] <mattbrejza> habitat uses the doc with the newest creation time
[14:13] <mattbrejza> when there are multiple docs for a callsign
[14:13] <YO9ICT> roger
[14:15] <YO9ICT> it works now, tnx !
[14:16] <mattbrejza> np
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[14:25] <YO9ICT> Has anyone tried Virtual Audio Cable ? I'm rx'ing with SDR Sharp
[14:26] <mfa298> a few people use it successfully
[14:26] <Geoff-G8DHE> Yes I use VAC for quite a few things
[14:26] <mfa298> although if you've got the limited free version I think it speaks fairly regularly to tell you it's not registered
[14:27] <Geoff-G8DHE> yes its not usuable with out the paid for version
[14:27] <eroomde> pcb in the oven
[14:27] <gurgalof> windows problems...
[14:27] <eroomde> kinda like being a baker but the smells are more toxic
[14:27] <mattbrejza> eroomde: we're expecting pics :)
[14:28] <eroomde> willdo
[14:28] <eroomde> got a loada PTH parts to put on once it comes out
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[15:12] <eroomde> ok, new pcb: http://i.imgur.com/RAmhKwM.jpg
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[15:14] <SpeedEvil> :)
[15:17] <mattbrejza> oo nice
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[15:29] <eroomde> it's a motordriver
[15:29] <eroomde> i guess it says so on the silkscreen
[15:33] <mattbrejza> the IC with the heatsink gives it away a bit too
[15:33] <gurgalof> those TI DRV**** are nice
[15:34] <gurgalof> and ST's ARM's is nice
[15:34] <eroomde> yeah, my quick eval was promising
[15:34] <eroomde> gonna play with it more on this board
[15:34] <eroomde> the nice thing is it has 4 independant half bridges, so you can run one brushless motor on it, or twoo brushed motors
[15:35] <mattbrejza> or four brushed in one direction?
[15:35] <gurgalof> I've used DRV8833 on some small stuff
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[15:36] <eroomde> mattbrejza: probably if you could get it spinning in a direction to start
[15:36] <eroomde> like starting an old-fashioned rotary engine on a plane
[15:37] <eroomde> i've got current sensing on each of the phases too as i want to do some crude force feedback for closing valves
[15:37] <mattbrejza> i was thinking of just a standard DC brushed thing, but looking at the datasheet its just a fancy high current push-pull thing
[15:39] <eroomde> yep
[15:39] <eroomde> quite flexible
[15:39] <eroomde> and surprisinly high current rating
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[15:40] <mattbrejza> 24A at 52V
[15:41] <eroomde> not sure i beleive it myself
[15:41] <eroomde> but i only want about 6A/phase max out of this
[15:41] <eroomde> @24V
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[15:55] <qyx_> wut
[15:55] <qyx_> 24A at 52V?
[15:56] <daveake> Ideal for power control in an Ameri-HAB
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[16:04] Nick change: KipK -> KipK_away
[16:07] Nick change: KipK_away -> KipK
[16:16] Nick change: Scorpia_ -> scorpia
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[16:25] <gonzo__> for a second I thought I was reading a cnc machining channel
[16:26] <eroomde> nope, hab
[16:26] <eroomde> this would work for hab-lofted telescopes
[16:26] <gonzo__> (I managed to find a 24V at 100A psu for a PA project)
[16:27] <eroomde> nice
[16:27] <eroomde> i like scanning ebay for those things
[16:27] <eroomde> you occassionally get amazing 19" rackmount beasts for very little
[16:28] <eroomde> fsphil is in the market for a decent double/triple lab psu
[16:28] <eroomde> if you see anything on your wonderings
[16:28] <eroomde> i am keeping half an eye out
[16:30] <eroomde> i'm actually really really impressed with the Hameg one we got used, it's definitely a step up in quality from the siglent/tenma stuff, much nearer HP and R&S, but still 'value'
[16:31] <gonzo__> most ofr what came out of this place was old junk
[16:31] <gonzo__> but will keep an eye out
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[16:38] <eroomde> fsphil: http://www.ebay.co.uk/itm/AGILENT-HP-E3631A-TRIPLE-OUTPUT-POWER-SUPPLY-GPIB-RS232-6V-5A-25V-1A-/380809943551?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item58aa0a99ff
[16:38] <eroomde> if that stays at that price it's a bargain
[16:38] <eroomde> it's really not half bad at the buy-it-now price either
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[16:41] <eroomde> (for what it is, thought it's still a lot of wonga in absolute terms)
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[16:47] <gonzo__> what's the application phil?
[16:48] <gonzo__> for bench work I have a fixed smpsu with lots of outputs. 24/12/5/-12 etc. Was just a pull from some scrap kit
[16:48] <gonzo__> ok, nit variable and no current limit
[16:49] <gonzo__> and a £50 variable bench psu for stuff that actually needs it
[16:54] <eroomde> double-sided analogue and rf stuff
[16:54] <eroomde> so wants to by linear
[16:54] <tweetBot> @stratodean: Here is how we did it! http://t.co/tn1aC2vVrG #santasleightest #makingof #ukhas
[16:54] <eroomde> and wants to have isolated outputs
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[17:20] <pot> anyone there?
[17:23] <daveake> nope
[17:27] <pot> Hi! you know anything about using SDR?
[17:28] <daveake> try that ^^
[17:28] <pot> héhé
[17:28] <mfa298> after than its likely to depend on what the question is
[17:29] <pot> thx for that I am coming from that page. I was wondering is I could communicate with a NTX2....
[17:29] <daveake> yes
[17:30] <pot> sorry I am a total nob, bit the subject is deep :)
[17:30] <eroomde> noob
[17:30] <eroomde> not nob
[17:30] <daveake> well maybe
[17:30] <daveake> but let's go with noob :)
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[17:31] <pot> Cool thanks for the info! I got some readings then I will come back around here very soon!
[17:32] <mfa298> there's a lot of good reading on the ukhas wiki
[17:32] <pot> Is there any connection between ukhas and CU space flight?
[17:33] <pot> they have a lot of good info as well!
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[17:33] <daveake> Yes there are some current and previous CUSF members here
[17:34] <eroomde> yo
[17:34] <daveake> ^ Exhibit 1
[17:34] <eroomde> ukhas become the ubrella group so all the people doing balloons could talk, in the UK in the early days
[17:34] <eroomde> CUSF was about 1/3rd of that
[17:35] <eroomde> there was also jcoxon, laurenceb, rocketboy, and a couple of others
[17:36] <pot> nice to meet you guys!
[17:36] <pot> I am new in this feeld but ready to spend time on the subject
[17:37] <daveake> It does take time. Nothing too complex but lots to learn
[17:37] <pot> I am developping an HAB for an association here in france
[17:37] <eroomde> ah great!
[17:37] <eroomde> there are a few french guys here
[17:40] <eroomde> jupiter is looking spectacular tonight
[17:41] <eroomde> just got the scope out to cool down
[17:42] <x-f> Orbital Sciences Antares/Cygnus launch to ISS in 25 minutes - http://www.ustream.tv/channel/nasa-tv-wallops
[17:42] <x-f> http://www.spaceflightnow.com/antares/orb1/status.html
[17:43] <pot> it looks like a nice place to hang around here!
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[17:43] <x-f> it is :)
[17:44] <gurgalof> I want to build a satellite
[17:45] <eroomde> pot: it is, it's a great channel
[17:45] <eroomde> lots of interesting people doing interesting things
[17:45] <pot> you can be sure I will saty around!
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[17:47] <gurgalof> I wish I found this channel earlier than I did
[17:47] <pot> I am going back to my readings, many thanks for you infos and glade to have met you all!
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[17:51] <bertrik> gurgalof: there's a #cubesat channel where there may be people around who worked on a nano-satellite
[17:52] <gurgalof> bertrik: the biggest problem is sending it to space
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[17:53] <gurgalof> maybe someday that dream can come true
[17:53] <gedas_> today lithuanian should launch 2 sats :)
[17:53] <Laurenceb> http://imgur.com/a/2qlm2
[17:54] <gurgalof> but there are many other things I want to build that is more feasable, like now a pico balloontracker
[17:54] Nick change: gedas_ -> jedas
[17:55] <gurgalof> Laurenceb: hahaha *facepalm*
[17:55] <x-f> good luck, jedas :)
[17:56] <jedas> http://www.delfi.lt/mokslas/mokslas/lietuvisku-palydovu-iskelimo-i-kosmosa-transliacija-gyvai.d?id=63714920
[17:56] <jedas> it should be live
[17:56] <jedas> 2 times it was postponded. now "all go"
[17:57] <Hix> Aurora alert tonight folks!!! http://www.theguardian.com/travel/2014/jan/09/northern-lights-visible-across-uk-england?CMP=fb_gu
[17:57] <jedas> nice
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[17:57] <Hix> Best time in years apparently
[17:58] <x-f> expecting heavy rain tonight..
[17:59] <Reb-SM3ULC> x-f: here too, but winter is coming, finally!!!
[17:59] <jedas> yea i see latvia get much more clouds
[18:00] <mfa298> That was mentioned on SGL last night and their forcasts seemed to suggest potential for clearer skies this evening as well
[18:01] <daveake> yep. best time midnight - 3am
[18:01] <x-f> Reb-SM3ULC, i don't want it anymore :) this eternal autumn was very fine for bikerides and other outdoor activities
[18:01] <Hix> 51.68N think i'm screwed. bad light pollution too
[18:02] <mfa298> not sure if there's anywhere I can sensibly get to easily with minimal light polution. I'd guess this far south anything I can see would be near the horizon.
[18:04] <x-f> last spring, when i finally saw an aurora for the first time, i was standing next to a lamppost, so don't give up just yet
[18:05] <Hix> @virtualastro apparently is pretty good to follow for alerts as well as @aurorawatchuk
[18:05] <x-f> launch in 2 minutes
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[18:07] <YO9ICT> The Antares is also going to the ISS
[18:07] <jedas> here we go
[18:07] <YO9ICT> Lift-off
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[18:11] <x-f> needs more onboard cameras
[18:12] <Reb-SM3ULC> good visibility if one can see all the the way to meco at 100 km...
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[18:14] <Laurenceb> high acceleration from the solid motor
[18:19] <bertrik> amazing stuff
[18:19] <gurgalof> nice to see telemetry graphs
[18:20] <SpeedEvil> Hmm.
[18:20] <SpeedEvil> Allegedly, it is clear skies tonight.
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[18:36] <mikestir> Upu: how close to the ideal shift do dominoex tones need to be? Can you do it with the Si4060 by programming the PLL or do you have to pull the crystal?
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[18:41] <Lunar_Lander> hello
[18:42] <Upu> I use a 16.369Mhz crystal mikestir
[18:43] <Upu> which if you work it out means 2 x channel step is exactly the right spacing
[18:43] <Upu> and yes I know its out of spec
[18:43] <Upu> afk a few
[18:43] <gurgalof> it's way out of spec
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[18:44] <gurgalof> can you step channels while transmitting?
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[18:52] <Laurenceb> INFO src/stlink-common.c: SRAM size: 0x30000 bytes (192 KiB), Flash: 0x200000 bytes (2048 KiB) in pages of 16384 bytes
[18:52] <Laurenceb> Chip ID is 00000419, Core ID is 2ba01477.
[18:52] <Laurenceb> Target voltage is 2866 mV.
[18:52] <Laurenceb> its a beast
[18:53] Action: Laurenceb has an STM32F439
[18:54] <gurgalof> 168MHz? if I remember correctly
[18:54] <eroomde> fuzzy pic of jupiter
[18:54] <eroomde> https://www.dropbox.com/s/e69otutgvejodb4/Screenshot%20from%202014-01-09%2018%3A53%3A59.png
[18:55] <eroomde> wobbly old atmosphere this evening, or something
[18:55] <ibanezmatt13> that's awesome
[18:55] <eroomde> i took this one almost exactly a year ago
[18:55] <eroomde> http://www.flickr.com/photos/eroomde/8371635224/
[18:55] <eroomde> same equipment, came out better
[18:56] <number10> thats ok eroomde - whats your setup
[18:56] <eroomde> 10" reflector scope and canon dslr
[18:56] <gurgalof> nice pictures
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[18:58] <SpeedEvil> The hacks for doing sorta-AO look interesting.
[18:58] <SpeedEvil> You take video, and then work out the sharpest bits of teh image from each frame, and use those
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[19:02] <LeoBodnar> Page 23: http://epubl.luth.se/1402-1757/2007/32/LTU-LIC-0732-SE.pdf
[19:02] <LeoBodnar> Interesting
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[19:06] <eroomde> yeah
[19:06] <eroomde> i have a friend who did some work with that for his PhD
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[19:06] <eroomde> iocean level monitoring
[19:06] <eroomde> ocean*
[19:07] <jcoxon> evening all
[19:09] <eroomde> yo jcoxon
[19:09] <eroomde> how're tricks?
[19:09] <LeoBodnar> yo jc
[19:10] <jcoxon> eroomde, not bad thasnk, long week, quite tired
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[19:11] <eroomde> same
[19:11] <eroomde> i think the floodwater in ox is subsiding
[19:11] <eroomde> but 2 of the 3 majour routes in and out are closed due to flooding
[19:11] <eroomde> so i'm not bothering trying to commute home until about 9-10pm
[19:12] <LeoBodnar> is there a place where I can get some sampled raw GPS data to play around with?
[19:13] <eroomde> yep
[19:13] <eroomde> 1 sec
[19:13] <Upu> I love this channel
[19:13] <LeoBodnar> it loves you back
[19:13] <Upu> oh thx for step ups
[19:13] <Upu> <3 long time
[19:13] <LeoBodnar> did you get step-ups yet?
[19:13] <Upu> as above
[19:13] <LeoBodnar> cheers
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[19:14] <LeoBodnar> sorry, there were some delays
[19:14] <Upu> Laggy McBodnar ?
[19:14] <Upu> need to have a chat with you later about replicating that hot start issue
[19:14] <Upu> however can wait as cooking
[19:14] <LeoBodnar> yeah life traceroute is a mess
[19:15] <LeoBodnar> ok
[19:15] <eroomde> LeoBodnar: https://www.dropbox.com/s/5z1l9wss9xmt1oi/exampledata.bin
[19:15] <LeoBodnar> thanks Ed
[19:16] <eroomde> it's 1-bit samples, 8 samples per byte, centre frequency is 3563000.0Hz
[19:16] <eroomde> samplefreq is 12MHz
[19:16] <LeoBodnar> cheers!
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[19:16] <eroomde> np
[19:16] <LeoBodnar> is LSB the earliest bit?
[19:17] <eroomde> ?
[19:17] <LeoBodnar> How does timing works inside the byte
[19:17] <eroomde> oh sorry!
[19:17] <eroomde> yes
[19:18] <LeoBodnar> thanks a lot!
[19:18] <eroomde> MSB is first
[19:18] <gurgalof> Upu: can you step channels while transmitting on si4060?
[19:18] <eroomde> left to right
[19:18] <eroomde> it is just putting the raw spat-out bitstream into bytes as they come
[19:18] <LeoBodnar> is it the data you used in the talk?
[19:18] <eroomde> yes
[19:18] <eroomde> sat 22 is def in it
[19:18] <LeoBodnar> even better!
[19:18] <eroomde> cool, gtg
[19:18] <LeoBodnar> ta
[19:19] <eroomde> will be online later
[19:19] <eroomde> for now, dinner until it's safe to return top ox
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[20:06] Nick change: KipK -> KipK_away
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[20:21] <arko> uggg
[20:21] <arko> not sure if i should route a solar panel voltage sense.. i dont want to waste power :/
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[20:31] <Babs_> I don't think I've ever heard an American say that he is worried about wasting power before. This is more normal for you guys isn't it Arko? http://www.youtube.com/watch?v=qWe06v8eo6k
[20:35] <mfa298> I'm disappointed, I half expected a clip of clarkson going "POWER!!!"
[20:37] <Lunar_Lander> XD
[20:37] <Upu> Like this one : http://www.youtube.com/watch?v=tF2ZPRmocs4
[20:37] <Upu> "Powerrrr! Doh"
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[21:44] <jcoxon> ping dove3_henry
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[21:47] Nick change: BitEvil -> SpeedEvil
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[22:27] <WillTablet> Hello
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[22:29] <mfa298> evening will
[22:29] <arko> Babs_ :P
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[22:32] <Laurenceb_> hi everyone
[22:34] <LeoBodnar> hi Laurenceb_
[22:35] <WillTablet> mfa298: did I mention I got a nice QSO while /m in a car?
[22:35] <WillTablet> I was on a rubber ducky that came with it
[22:35] <WillTablet> Got into gb3fn on the way there
[22:35] <LeoBodnar> is SE4110 good enough to be used with passive antenna (or even chip one)?
[22:35] <WillTablet> Nothing at all on the way back
[22:36] <mfa298> I think I saw you say that the other day
[22:36] <Laurenceb_> certainly with passive, as it has built in LNA
[22:36] <Laurenceb_> chip antenni has low gain, so you might need longer integration time
[22:36] <WillTablet> Not sure why I heard nothing on the way back
[22:36] <Laurenceb_> but it will still work
[22:37] <mfa298> if it's a handheld in a car then the body of the car will impact how well the antenna works
[22:37] <mfa298> magmount on top will improve things a lot.
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[22:37] <WillTablet> mfa298: yeah, no
[22:37] <WillTablet> Parents would object
[22:38] <WillTablet> Quite severely
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[22:38] <mfa298> location can also make a big difference - I can hear some repeaters at points over a longer journey but it will drop in and out as the landscape gets in the way
[22:38] <LeoBodnar> Laurenceb_ noteworthy p.23 http://epubl.luth.se/1402-1757/2007/32/LTU-LIC-0732-SE.pdf
[22:40] <WillTablet> mfa298: getting a club ic-107 at the weekend
[22:41] <WillTablet> It has an atu built in
[22:41] <Laurenceb_> very interesting stuff, thanks
[22:41] <WillTablet> Might be 170
[22:42] <mfa298> I was about to ask as I wasn't finding much for ic-107 on google
[22:42] <WillTablet> Aah
[22:42] <mfa298> you'll probably find the built in ATU isn't as good as a seperate one .
[22:42] <WillTablet> It was a ic 710
[22:43] <SpeedEvil> Can someone PM me something as a test?
[22:44] <SpeedEvil> Thanks.
[22:44] Action: mfa298 wonders how many pm's SpeedEvil just got.
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[22:45] <mfa298> WillTablet: do you mean ic-7100 (the only 710 I see if the M710 for marine stuff)
[22:45] <WillTablet> I mean 791
[22:45] Action: Laurenceb_ fried two sparkfun 9dof sensor sticks today
[22:45] <WillTablet> No
[22:45] <WillTablet> 701
[22:45] <Laurenceb_> expensive :-/
[22:45] <WillTablet> Yes IC 701
[22:45] <LeoBodnar> ESD?
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[22:45] <Laurenceb_> nope, ground came lose inside a plug
[22:46] <Laurenceb_> they got fried by the I2C grounding them
[22:46] <LeoBodnar> Laptop?
[22:46] <Laurenceb_> they connect to a datalogger
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[22:47] <LeoBodnar> Laptops and other stuff powered by two wire cords with SMPS just love to have ca 120 AC on their "grounds"
[22:48] <WillTablet> Is there anywhere on the air where I can practise morse really slowly?
[22:48] <WillTablet> Like 5wpm
[22:49] <LeoBodnar> define "practice"
[22:49] <WillTablet> Operate
[22:49] <LeoBodnar> as in QSO?
[22:49] <WillTablet> Yup
[22:49] <mfa298> looking at the age of the ic-701 and a quick look at the manual I'm not sure it will have an ATU built in.
[22:49] <mfa298> do you know any morse yet ?
[22:50] <LeoBodnar> anywhere where CW is allowed but preferably not close to DX stations
[22:50] <WillTablet> mfa298: might be separate actually
[22:50] Action: SpeedEvil ponders.
[22:50] <WillTablet> But they have an atu for me either way
[22:50] <SpeedEvil> I wonder if any F1 teams/... have gone to the bother of filling void spaces with helium.
[22:50] <WillTablet> Well, no but if I transcribe it from paper...
[22:51] <LeoBodnar> the best practice is receiving ad nauseam
[22:51] <mfa298> SpeedEvil: choose your team to suggest it to as a possibly loop hole !
[22:51] <SpeedEvil> :)
[22:52] <SpeedEvil> I doubt you could get more than half a kilo. But...
[22:52] <LeoBodnar> evacuate more like
[22:53] Nick change: GeekShad1w -> GeekShadow
[22:53] <mfa298> WillTablet: it's worth finding something to practice with first away from the radio, once you can decode it near to live you're more likely to get some contacts.
[22:53] <Laurenceb_> looks like only ITG-3200 and LSM330DL sensors got fried
[22:53] <mfa298> I've used http://www.justlearnmorsecode.com/ when I've been trying to learn morse.
[22:53] <Laurenceb_> HMC magnos and ADXL345 accelerometers survived
[22:53] <WillTablet> Yeah
[22:53] <WillTablet> Might try g4fon
[22:53] <Laurenceb_> £157 to repair :-/
[22:54] <WillTablet> Was talking to my tech teacher in the car on the way to a school trip, turns out he learned morse a while back
[22:54] <WillTablet> Didn't ask why
[22:54] <mfa298> then maybe see if you can find someone local who can help you practice. with an oscilator plugged into your handheld you could practice over 2m fm if it's someone suitably close
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[22:55] <Laurenceb_> sfe are a rip off, but its not my money so shrug :P
[22:55] <WillTablet> mfa298: heard of the koch method?
[22:56] <WillTablet> Turns out G4FON made a morse learning program
[22:57] <mfa298> WillTablet: that's the method I've used with the program I mentioned above
[22:58] <mfa298> that software uses Koch's method and Farnsworth timing
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[23:01] <WillTablet> Right
[23:01] <WillTablet> I knew about G4FON before I knew he was a club member actually!
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[23:06] <Laurenceb_> i think i have found a venn diagram group with no overlap with "internet users"
[23:06] <Laurenceb_> "industrial adhesives experts"
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[23:08] <adamgreig> I met an industrial adhesives expert once
[23:09] <adamgreig> definitely not an internet user
[23:09] <adamgreig> gave us a presentation about industrial glues
[23:09] <adamgreig> with a honest to god slide carousel
[23:09] <adamgreig> turned the lights down
[23:09] <WillTablet> Did he ever sniff them?
[23:09] <adamgreig> of the 10% of the lecture theatre that even turned up, he was lucky if one in ten managed to stay awake
[23:09] <Laurenceb_> that would explain a lot
[23:09] <adamgreig> apparently glues are used for many applications in industry
[23:10] <Laurenceb_> lol
[23:10] Action: Laurenceb_ has given up on trying to bond polyurethane elastomer, time to try old school rivets
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[23:17] <Babs_> I sold one of the earliest epoxy resin companies in 2005
[23:17] <Babs_> the original owner famously turned away Thomas Edison's suggestion that he made telephones for him on the basis that they were never going to take off
[23:18] <Babs_> but he did come up with an awesome two part epoxy package http://www.glueonline.co.uk/shop/Two_Part_Epoxy_Adhesives.html
[23:18] <mfa298> and now there are phones on planes so they literally do take off
[23:18] Action: mfa298 gets coat
[23:19] <Babs_> fold it in two, turn it off and squeeze and you get equal volumes hardener and whatever the other stuff is called
[23:20] <Laurenceb_> resin :P
[23:21] <Babs_> that'll be it. i am too zoned out and couldn't be ar$ed to walk down to my box to see what it was called
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[23:25] <Laurenceb_> i spent some time working with EADS and they had a team of 30+ dealing with adhesives
[23:25] <Laurenceb_> now i know why
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[00:00] --- Fri Jan 10 2014