highaltitude.log.20130115

[00:00] <Lunar_Lander> exactly
[00:01] <KT5TK_QRL> That's still on my todo list to write SD logging software...
[00:05] <Lunar_Lander> yea
[00:06] <Lunar_Lander> it is actually a sparkfun openlog
[00:06] <Lunar_Lander> so all we do is write the datastring to it on one of the serial connections
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[00:12] <Lunar_Lander> but today my camera crashed from the lab table
[00:12] <Lunar_Lander> http://s.gullipics.com/image/u/t/x/5yvnbl-kj4j25-lhd/MINI0021.jpeg
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[00:12] <Lunar_Lander> :(
[00:12] <Lunar_Lander> but it still works
[00:19] <KT5TK_QRL> Aergerlich! Well, my 808 camera fell down from 106000ft without parachute and still survived...
[00:22] <Lunar_Lander> ohhhh
[00:22] <Lunar_Lander> btw that photo of the split screen was made with my 808
[00:22] <Lunar_Lander> so the photo mode of that isn't so good
[00:22] <Lunar_Lander> also that you have no sort of viewfinder
[00:22] <KT5TK_QRL> the 808 focuses to infinity
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[00:23] <KT5TK_QRL> so it can't do close ups
[00:24] <Lunar_Lander> yea
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[00:26] <Lunar_Lander> how comes that your 808 fell from the stratosphere?
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[00:28] <SpeedEvil> KT5TK_QRL: when taking pics?
[00:29] <SpeedEvil> also, contacted them about it?
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[00:40] <KT5TK_QRL> SpeedEvil: http://tkrahn.dyndns.org/gallery2/main.php?g2_itemId=8921
[00:40] <KT5TK_QRL> https://www.youtube.com/watch?v=vQ7TvOIvtT0
[00:40] <KT5TK_QRL> That was the story with the 808 cam
[00:41] <KT5TK_QRL> I've attached the 808 to the neck of the balloon, but I didn't expect to get it back
[00:56] <Lunar_Lander> yes
[00:58] <Lunar_Lander> and it came back with the flight train?
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[01:10] <Spoz> woohoo, two bands in fldigi
[01:11] <Spoz> about 600hz apart
[01:11] <Spoz> should I get them closer?
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[01:14] <Spoz> I can get them to 300hz apart but they still dont line up with the two red lines
[01:17] <KT5TK_QRL> Yes, try to line them up with the red lines as good as you can.
[01:17] <Spoz> I just found the shift option
[01:17] <Spoz> I can set it to a custom level to get them lined up
[01:18] <KT5TK_QRL> dl-fldigi has some option for manual shifts. you can use that for testing if it works
[01:18] <Darkside> try to set the shift to one of the default leels
[01:18] <Darkside> like 425Hz
[01:18] <Spoz> ok, I'll play with resistor values
[01:18] <KT5TK_QRL> however you finally want the 425 HZ so that others will pick you up
[01:18] <Spoz> will I need to adjust the pot on the ntx2?
[01:18] <Spoz> ah ok
[01:21] <KT5TK_QRL> you should be able to get it just with external resistors
[01:21] <milton> I ahve a question regarding the 2 ground pins on the ntx2
[01:21] <milton> should they be connected to the ground of the microcpntroller?
[01:22] <Darkside> it won't hurt
[01:22] <KT5TK_QRL> In the first place to the shielding of the antenna connection, but then also to the ground of the micro
[01:23] <Spoz> http://balloon.theredpaintings.com/fldigi.PNG
[01:23] <milton> I conducted a range test yesterday where i simply connected a 16cm wire to the antenna pin and left the two ground pins a lone
[01:23] <milton> i couldnt pick up the signal 3 km away
[01:24] <Spoz> ah now its working, had to change the encoding to 7 bit ascii
[01:24] <Spoz> derr
[01:25] <KT5TK_QRL> Spoz: nice line up
[01:26] <KT5TK_QRL> milton: good but you need more than 3 km. Build a ground plane
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[01:28] <milton> kt5tk, yeah i wasnt impressed with 3km
[01:29] <Randomskk> 3km over ground is very different to 3km line of sight in the air
[01:29] <KT5TK_QRL> From the balloon it will be much easier, but you'll want good coverage for the recovery on the ground
[01:30] <milton> My colleque waited at a lookout while i drive down
[01:30] <milton> it was line of site
[01:30] <milton> thats what worried me
[01:31] <KT5TK_QRL> humidity right above the ground attenuates
[01:31] <milton> well it was pissing down
[01:31] <KT5TK_QRL> did you measure the tx power?
[01:32] <KT5TK_QRL> yes rain is nasty for UHF
[01:33] <KT5TK_QRL> Did you use a Yagi on the receive side?
[01:34] <milton> yes i did
[01:34] <KT5TK_QRL> That would bring several dB of gain
[01:34] <KT5TK_QRL> how many elements?
[01:40] <milton> 7 elments
[01:43] <Spoz> KT5TK_QRL: thanks, I just tuned it a bit better using the pots. I think I just really wanted to adjust some pots.
[01:43] <Spoz> Im sure you know how it is :p
[01:44] <milton> should i connect the ground plane to the arduino ground or does it not matter?
[01:44] <Spoz> probably a good idea to
[01:44] <Spoz> good practice anyway, Im not sure it will make a difference
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[02:00] <KT5TK_QRL> The right way to do this is first connect all digital grounds and analog grounds separately and then connect them at one single point with each other
[02:00] <KT5TK_QRL> if all connections are pretty short it doesn't matter so much
[02:01] <KT5TK_QRL> However in the end all grounds need to be connected with each other.
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[06:14] <arko> http://www.youtube.com/watch?feature=player_embedded&v=V4V2bpZlqx8
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[07:10] <jcoxon> sts-2 has launched
[07:11] <Darkside> yay
[07:11] <jcoxon> http://ssdv.habhub.org/
[07:12] <Darkside> SNOW?!
[07:12] <Darkside> what this wizardry
[07:13] <fsphil> winter
[07:14] <fsphil> that does look cold
[07:15] Nick change: Mission-Critical -> MissionCritical
[07:19] <x-f> zero degrees, according to tracker
[07:24] <fsphil> no new image data
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[07:30] <fsphil> ah here we go again
[07:30] <x-f> predicted landing across the border
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[07:33] <fsphil> brrr, -48c. cold up there
[07:33] <fsphil> lovely and warm inside the box
[07:34] <UpuWork> anyone updated the live predictions this morning ?
[07:35] <UpuWork> doing it now..
[07:35] <UpuWork> :)
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[07:35] <x-f> Radim's APRS tracker - http://aprs.fi/#!mt=roadmap&z=11&call=a%2FOM2AMR-11&timerange=3600&tail=3600
[07:36] <fsphil> I'm not even sure how to do that
[07:36] <UpuWork> all systems operational it seems :)
[07:37] <oh7lzb> Hm, reporting a course of 0.
[07:37] <UpuWork> script to upload ARPS data to Spacenear.us doesn't seem to be working
[07:37] <UpuWork> HTTP::Response=HASH(0x9eea5e8)
[07:37] <fsphil> does it need it?
[07:38] <UpuWork> not really but for completeness
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[07:40] <fsphil> that's a lot of cloud
[07:40] <UpuWork> well good job I did the lilve prediction last night as it can't get any data this morning
[07:40] <fsphil> I love it when the first part is dark blue, you know you're getting high
[07:41] <UpuWork> INFO: Looking for latest dataset which covers Tue Jan 15 07:35:27 2013
[07:41] <UpuWork> Could not locate a dataset for the requested time.
[07:41] <fsphil> the data from last night is wrong though, on my screen the prediction is going the opposite direction
[07:41] <fsphil> although it might actually do that loop
[07:42] <UpuWork> oh its getting data now
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[07:43] <fsphil> running a regular prediction
[07:43] <fsphil> yea, it loops around
[07:43] <arko> *** stack smashing detected ***: ./pred_src/pred terminated
[07:43] <arko> oops
[07:43] <arko> hahaha
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[07:55] <fsphil> UpuWork: the link at the top of spacenear just brings it to the start of that thread he replied to
[07:57] <x-f> and the SSDV link is missing
[07:57] <x-f> pics are too sunny at the moment, tho
[07:58] <fsphil> yea. the sun is low and getting in the way
[07:58] <fsphil> this one looks better
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[08:04] <fsphil> it's following the loop perfectly
[08:04] <eroomde> morninall
[08:04] <fsphil> mornin mr.eroom
[08:06] <eroomde> i had a dream about turbopumps last night
[08:06] <eroomde> it was actually quite fruitful
[08:07] <eroomde> probably been done before but I figured out a nice way of getting rid of the axial loads on the shaft
[08:09] <UpuWork> fsphil I know if you can give me a URL direct to the post I'll fix it
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[08:09] <UpuWork> Morning Ed
[08:09] <UpuWork> ah getting GFS data now
[08:09] <eroomde> morning upu
[08:09] <UpuWork> so prediction should be ok now
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[08:10] <UpuWork> nice insulation -46.5 vs 16.7
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[08:26] <fsphil> probably the Pi keeping everything warm
[08:26] <fsphil> this webcam is struggling with the lighting conditions
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[08:27] <daveake> Yeah the Pi will do that. Linear reg?
[08:28] <fsphil> likely, with that many batteries
[08:29] <daveake> Oh yeah, 18?
[08:30] <fsphil> yep
[08:30] <daveake> Anyone know what webcam he used?
[08:30] <fsphil> unknown here
[08:31] <daveake> I think I got lucky with the one I chose
[08:31] <fsphil> Tim had a logitech
[08:31] <daveake> So's mine
[08:31] <fsphil> which suffered the same problem
[08:32] <fsphil> interesting
[08:33] <daveake> I've flown SSDV 3 times, with the same model, and haven't really had this problem. Sure some photos are iover-exposed but that always happens with any camera.
[08:33] <daveake> This one looks like the sensor is damaged in the centre
[08:33] <eroomde> have you had a chance to fly the pi cam yet?
[08:33] <UpuWork> haha
[08:33] <eroomde> or do you have an approximate date for when you might be able to?
[08:33] <UpuWork> what picam ?
[08:34] <UpuWork> vapourware
[08:34] <daveake> The one they were launching in the summer of 2012?
[08:34] <fsphil> real soon now
[08:34] <daveake> Er November 2012
[08:34] <daveake> Er Before Xmas
[08:34] <daveake> Er After Xmas
[08:34] <daveake> Er end of Feb. Maybe
[08:34] <fsphil> it sounds like it's being developed by RS
[08:34] <daveake> hah
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[08:35] <daveake> I'm hoping it'll show up in time for me to launch on my b'day near the end of March. Happens to be a Saturday.
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[08:37] <eroomde> fair enough
[08:38] <eroomde> would be nice if it can be used as a star camera
[08:38] <eroomde> can it give you raw image frames, do you know?
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[08:39] <fsphil> I started some code to measure star positions
[08:39] <eroomde> :D
[08:39] <eroomde> gud
[08:39] <daveake> I don't know. All I know really is that it connects to the graphics processor which does the conversion to jpeg and/or H264. Whether the processor can request the raw data or not - dunno
[08:40] <fsphil> I hope so
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[08:49] <SamSilver> aaha a chase car
[08:50] <eroomde> fsphil: dunno if you're interested but this is the blog of a chap working on BLAST, the big balloon telescope project
[08:50] <eroomde> http://galadriel.astro.utoronto.ca/ballast/
[08:50] <eroomde> you can start at the beginning and spend hours looking at pictures of grad students working on star camera, flight computers, telescope alignment, or whatever
[08:50] <eroomde> has a very nice feel to it
[08:50] <eroomde> they're always out in the antarctic
[08:50] <eroomde> i want to go to the antarctic
[08:52] <SamSilver> pop
[08:54] <fsphil> I do too eroomde
[08:54] <eroomde> http://farm9.staticflickr.com/8466/8128577136_cc84ca93e9_b.jpg
[08:54] <eroomde> their star cameras
[08:54] <fsphil> it has to be one of the strangest places on earth
[08:55] <eroomde> i think they have a pair of these so they can grab all three axes
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[08:55] <UpuWork> I nearly applied for the British antarctic survey when I left Uni
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[08:56] <eroomde> UpuWork: awesome
[08:56] <eroomde> what to do?
[08:56] <UpuWork> can't remember now
[08:56] <UpuWork> it was something interesting
[08:56] <eroomde> my boss had a look when he graduated too, he said
[08:56] <eroomde> went for an interview as an engineer
[08:56] <UpuWork> paid very well for 6 months
[08:56] <UpuWork> It will have been something engineering wise
[08:57] <eroomde> but he said he was a bit dissapointed that 'engineers' there really just manage subcontracts to actual engineers
[08:57] <Darkside> i've met a few of the engineers at BAS now
[08:57] <Darkside> there's a few really good techs there
[08:57] <eroomde> although i think they're trying to move away from external consultants now for budgetary reasons
[08:57] <Darkside> david someone
[08:57] <Darkside> maxwell i think
[08:58] <Darkside> david maxfield
[08:58] <eroomde> i would just quite like to get done there
[08:58] <eroomde> would do pro bono engineering
[08:59] <Darkside> part of what i'm doing is kind of for them
[08:59] <Darkside> the low power HF TX stuff
[08:59] <Darkside> they want heartbeat transmitters for their remote scientific instruments
[08:59] <Darkside> and what i'm working on can provide that
[09:00] <eroomde> nice
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[09:00] <Darkside> and at 90% efficiency too
[09:00] <Darkside> :-)
[09:00] <eroomde> i did a smidge of work for their javelin project
[09:00] <eroomde> where they air-drop these instrumented speers into ice flows
[09:00] <eroomde> the spears have gps and other things
[09:00] <eroomde> and track the ice movement
[09:00] <Darkside> cool
[09:01] <Darkside> (literally cool)
[09:01] <eroomde> well, part of the spear reason was to have >1m sticking up into the air out of the ice
[09:01] <eroomde> which buys you some life before snow coverage
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[09:13] <fsphil> prediction is pointing to many leafy things
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[09:19] <fsphil> back in the clouds
[09:22] <UpuWork> might just clear
[09:22] <UpuWork> if they are really luck
[09:22] <UpuWork> lucky
[09:22] <fsphil> starting to wonder if this camera is damaged
[09:22] <UpuWork> however
[09:23] <UpuWork> if they hit those trees
[09:23] <UpuWork> http://goo.gl/maps/Mqtxe
[09:23] <UpuWork> bad
[09:23] <UpuWork> actually its going away from the prediction
[09:23] <UpuWork> he's going to loose it soon
[09:24] <fsphil> it's heading west away from the prediction
[09:24] <UpuWork> I thnk its going to end in the valley by the road
[09:25] <UpuWork> if he's really lucky
[09:25] <UpuWork> fields :)
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[09:27] <fsphil> think it's gone
[09:27] <fsphil> oh image data still arriving
[09:27] <fsphil> just one packet
[09:27] <fsphil> yay for FEC
[09:28] <fsphil> considering the height around there, there's a good chance it landed short of that prediction
[09:28] <fsphil> there's a few patches of dense trees
[09:29] <G0MJW-PC> Nice sunny day - according to Google Earth....
[09:29] <fsphil> there's a nice 500m hill between the payload and the predicted spot
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[09:31] <x-f> APRS packet got through 200 meters lower
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[09:31] <UpuWork> I think they could be lucky there
[09:32] <fsphil> yea not looking too bad
[09:32] <UpuWork> get to the 487 and start to DF
[09:32] <fsphil> not that remote
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[09:33] <fsphil> hmm.. spacenar is saying the predicted landing is at 00:33 UTC
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[09:34] <kokey> yeah big trees in some forests there tho
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[09:47] <minor> the comms were lost in altitude about 1900m the team is heading to the nearest location of the predicted landing
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[09:54] <mattbrejza> is the czech republic lacking mobile internet?
[09:54] <fsphil> yea the chase car hasn't updated in a while
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[09:56] <x-f> data connection in roaming usually cost lots of monies
[09:56] <x-f> costs*
[09:56] <fsphil> I got charged £1 for data when I was on ROI
[09:57] <fsphil> I only used about 500k
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[09:57] <fsphil> if even that
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[09:59] <SpeedEvil> https://www.youtube.com/watch?v=kSN7OZjt1MU
[09:59] <SpeedEvil> on the topic of chase cars
[09:59] <SpeedEvil> (unexpected developments)
[10:01] <mattbrejza> our news would be more interesting if we had live police chases
[10:02] <fsphil> lol
[10:03] <minor> ok, the latest news saying they have a weak signal near 49.304811,18.062897
[10:05] <SpeedEvil> :-)
[10:08] <x-f> those coords are where the predicted landing spot is
[10:08] <mattbrejza> weak signal means its not in trees at least
[10:09] <x-f> it could have landed in a valley
[10:09] <x-f> ot probably not
[10:09] <x-f> or*
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[10:16] <minor> team now heading to the landing point - about 100m away, in a deep snow
[10:16] <UpuWork> located it minor ?
[10:17] <minor> probably yes, UpuWork, have just sec hand info
[10:17] <UpuWork> super
[10:18] Nick change: noelsharpe -> bigbadwilf
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[10:26] <minor> the landing module was found. the final ALT reached according the transmitted data 38003m
[10:26] <minor> i guess, more info will come soon on stsproject.net
[10:27] <x-f> good news!
[10:28] <minor> the landing was near this village 49.303286,18.089375
[10:30] <Endiderm> minor, do you have exact landing coordinates?
[10:30] <minor> nope, sorry
[10:33] <UpuWork> super!
[10:36] <minor> http://i.sme.sk/cdata/7/66/6667137/nalez.jpg
[10:36] <minor> cheers!
[10:36] <UpuWork> oh cool
[10:37] <fsphil> nice pic
[10:37] <fsphil> looks cold
[10:38] <craag> Is that a pistol-grip df antenna?
[10:38] <UpuWork> where are you getting this from ?
[10:38] <UpuWork> oh this was on a tech website
[10:38] <minor> http://tech.sme.sk/c/6667137/minuta-po-minute-slovensky-balon-sme-nasli-spadol-do-dediny.html
[10:38] <UpuWork> ah ofc
[10:39] <minor> :P
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[10:40] <fsphil> hmm.. that screen shot of the ssdv page looks odd
[10:40] <fsphil> looks like it's been done using an ancient browser
[10:41] <fsphil> oh it's not a screen shot
[10:41] <fsphil> don't mind me
[10:42] <fsphil> this is what our launches need, a real-time reporter
[10:42] <fsphil> uploading pics and updates
[10:50] <x-f> a dedicated media dude?
[10:50] <fsphil> yea
[10:50] <fsphil> my launches tend to happen without much online updates
[10:50] <fsphil> or even announcements
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[11:31] <UpuWork> New Sarantel antenna if anyone is interested http://i.imgur.com/j0dOA.jpg
[11:32] <number10> looks a bit more robust
[11:33] <UpuWork> yeah feels a little better
[11:33] <Randomskk> feels so much better
[11:34] <UpuWork> I need to make a jig to help mount it
[11:34] <fsphil> much more likely to survive the ed test
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[11:37] <craag> Any performance improvements or just more robust?
[11:37] <UpuWork> hard to quantify
[11:37] <craag> There's probably only so much performance you can get out of a passive antenna I guess.
[11:37] <UpuWork> I'll check tonight
[11:38] <craag> I have a breakout board lying around with a broken old sarantel, so I'm very happy for t being more robust!
[11:38] <UpuWork> I can repair those boards
[11:40] <craag> I'll buy another antenna off you and solder it on at some point, there wasn't any fault in it, I dropped a laptop on it.. ublox still works fine as it can get a lock with a 1/4 wire whip!
[11:41] <UpuWork> nice :)
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[11:42] <fsphil> didn't we try that on a pcb once?
[11:42] <fsphil> just a pcb track as an antenna
[11:44] <UpuWork> yeah doesn't work
[11:44] <UpuWork> well didn't on mine
[11:45] <Randomskk> craag: it's not really compatible with the same PCBs
[11:46] <Randomskk> or, I don't believe it is..
[11:46] <craag> Randomskk: No I saw that, but Upu has 22 of the old type still in stock according to his website :)
[11:46] <Randomskk> oh right :P
[11:46] <UpuWork> I do
[11:47] <UpuWork> not sure I'll be ordering more after that
[11:47] <UpuWork> new ones will be going on soon
[11:54] <fsphil> I've a couple spair too if anyone needs 'em
[11:54] <fsphil> spare*
[11:55] <UpuWork> New pads are in Ava.lbr : https://github.com/Upuaut/Eagle-Libraries
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[12:13] <eroomde> arko: ping if you're about though i guess timezone fail
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[13:32] <lupine> hah, small world
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[13:33] <fsphil> try flying quantas economy
[13:34] Action: lupine is just catching up on LOHAN, which pointed him here
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[13:34] <eroomde> i've never flown quantas economy
[13:34] <eroomde> i've never flown quantas
[13:34] <fsphil> I loved quantas, my legs didn't enjoy economy so much
[13:35] <eroomde> i am doing virgin economy to JFK on sunday
[13:35] <eroomde> was quite comfy last time I want
[13:35] <eroomde> 'would you like a beer?'
[13:35] <eroomde> 'er...'
[13:35] <eroomde> 'it's complememntary!'
[13:35] <eroomde> 'yes please!'
[13:35] <fsphil> hah
[13:35] <eroomde> seems like business class to someone weened on teenager holidays on easyjet
[13:36] <fsphil> the meals on qantas where quite nice
[13:36] <UpuWork> hi lupine
[13:36] <fsphil> nothing special
[13:36] <lupine> afternoon :)
[13:36] <fsphil> trouble was there was almost no room to eat
[13:36] <UpuWork> LOHAN is in the sea
[13:36] <lupine> yeah, I just caught that
[13:36] <UpuWork> sadly
[13:36] <UpuWork> but we are planning to do it again
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[13:41] Action: lupine will be watching :). must be a pain to have lost the kit, though
[13:42] <fsphil> always a risk in this hobby
[13:42] <eroomde> more soldering practice
[13:42] <UpuWork> indeed
[13:42] <UpuWork> that one did have quite alot on it though
[13:42] <eroomde> just think how I feel having lost the martlet rocket upper stage
[13:42] <UpuWork> yeah that probably does pale
[13:43] <eroomde> 15kg of gopros, cnc's aluminium and carbon fibre
[13:43] <UpuWork> I think it was about £1000's worth
[13:43] <eroomde> and my electronics
[13:43] <lupine> the PCB by itself didn't exactly look like an afternoon's work
[13:43] <UpuWork> the PCB is the easiest bit to replace tbh
[13:43] <eroomde> and jon's electronics
[13:43] <UpuWork> We got 10
[13:43] <fsphil> ever get someone to fly over the area eroomde?
[13:43] <eroomde> nope
[13:43] <eroomde> should do really
[13:43] <UpuWork> Iridium next time ?
[13:43] <fsphil> might be able to spot it
[13:43] <eroomde> though if it came in ballistically it would have gone several metres into the peat bog
[13:44] <fsphil> which will be well covered up by now
[13:44] <UpuWork> GoPro + BacPac, Swift PCB, Temperature Logger, PAVA Tracker, Huge parachute
[13:44] <UpuWork> a gazillion Energizer Lithiums
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[13:44] <UpuWork> not to mention the Mobil astronaut
[13:45] <fsphil> an idea I had was to relay from an RC aircraft
[13:45] <UpuWork> which I spent an hour carefully attaching to the struts
[13:45] <fsphil> it having a bit of altitude should be able to track a nearby payload right to the ground
[13:45] <UpuWork> I think given the location the 4 Iridiums in the nose cone should do it
[13:45] <fsphil> though the weather you had the day of the rocket, that would be impossible
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[13:46] <UpuWork> oh the Iridium tracker as well I forgott hat one
[13:46] <fsphil> pricey buggers
[13:47] <UpuWork> anyway lupine http://www.flickr.com/photos/daveake/sets/72157632136764003/
[13:52] <lupine> :)
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[14:03] <OZ1SKY_Brian> When was LOHAN launched, must have missed something?
[14:04] <UpuWork> a month or so ago ?
[14:04] <OZ1SKY_Brian> ah ok
[14:04] <UpuWork> We launched it from Daves
[14:04] <OZ1SKY_Brian> does it have tags on?
[14:05] <UpuWork> yeah
[14:05] <UpuWork> I'm not so sure it will hold together
[14:05] <OZ1SKY_Brian> maybe a small chance to get it back then
[14:06] <OZ1SKY_Brian> oh ok
[14:06] <UpuWork> it was very last minute
[14:06] <OZ1SKY_Brian> north sea?
[14:06] <fsphil> I'm never doing last minute launches again
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[14:08] <UpuWork> English Channel
[14:08] <UpuWork> duff prediction
[14:08] <OZ1SKY_Brian> ok
[14:09] <UpuWork> we got a boat but couldn't locate it
[14:09] <UpuWork> Annoyingly the Iridium stopped working at 10km
[14:09] <OZ1SKY_Brian> yes seen the pictures :-(
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[14:32] <WillDuckworth> interesting about the iridium limit Upu
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[14:34] <UpuWork> was a fault not intentional
[14:37] <OZ1SKY_Brian> so that is normal above 10km?
[14:37] <UpuWork> Hi RIchardBabington
[14:37] <UpuWork> <- Anthony
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[14:38] <eroomde> typeError
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[14:43] <SP9UOB_Tom> hi Radim !
[14:48] <UpuWork> ping OZ1SKY_Brian
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[14:49] <UpuWork> ah its ok I found it
[14:49] <OZ1SKY_Brian> pong
[14:49] <UpuWork> I was after the link to your payload build but found it in history thx
[14:50] <OZ1SKY_Brian> ok :-)
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[15:18] <Laurenceb> http://imagebin.org/index.php?mode=image&id=242993
[15:19] <Laurenceb> finally created foam in povray
[15:32] <UpuWork> I have no idea what I'm looking at
[15:35] <SpeedEvil> :-)
[15:35] <SpeedEvil> medical device porn
[15:36] <gonzo__> that subject probably has a sunstantial dvd lib already
[15:36] <gonzo__> b
[15:36] <SP9UOB_Tom> UpuWork: just foam cerated in povray ;-)
[15:37] <Laurenceb> the "foam" is an isosurface contained inside a cylinder, then distorted
[15:37] <Laurenceb> more porous in the center on the layer
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[15:39] <Laurenceb> http://www.oyonale.com/images/3D/mouille_1200x1600.jpg
[15:39] <Laurenceb> some way to go before its that good...
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[15:41] <Laurenceb> actually you can see shadows off the top of the Chrysler building
[15:41] <Laurenceb> massive giveaway
[15:43] <Laurenceb> apparently pavement was drawn by hand, scanned and converted to height field with a script
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[16:01] <arko> eroomde: sup dude
[16:07] <eroomde> yo
[16:07] <eroomde> remind me what day that week was best for you?
[16:07] <eroomde> was it wed?
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[16:12] <arko> Thats the worst hahaha
[16:12] <arko> Oh wait
[16:12] <arko> Nvm thursday is the worst
[16:12] <arko> Ok so monday, wednesday, or friday
[16:13] <eroomde> monday, wednesday or fri
[16:13] <eroomde> ok
[16:13] <arko> Im more than willing to ditch lecture to go anyway
[16:13] <eroomde> will probably shoot for wed is that's ok
[16:13] <eroomde> so we can stop by mojave on mon when people are about
[16:13] <arko> Lunch time?
[16:14] <eroomde> and i might try and get my ass back to SF for a sat flight
[16:14] <arko> Kk
[16:14] <eroomde> on friday ^
[16:14] <arko> Cool
[16:14] <eroomde> i'll say lunch. i've no idea how long the tour will be or what have you
[16:14] <arko> So you will be busy monday?
[16:14] <eroomde> i'll ask if there is lunch or coffee or whatever
[16:14] <arko> Cool, lunch is perfect
[16:14] <eroomde> arko: i'm not 100% sure yet
[16:15] <eroomde> need to check with henry who I'm staying with in SF and who owns the varieze
[16:15] <arko> Kk
[16:15] <eroomde> i have a lot to do
[16:15] <eroomde> got a massive wadge of dollars this morning
[16:15] <arko> Tuesday is probably best for visiting the hackerspace
[16:15] <eroomde> i feel like a gangster
[16:15] <arko> Lol
[16:15] <eroomde> so is it ok to officially crash at yours for those 2-3 days?
[16:15] <arko> Hmmmm
[16:16] <arko> Let me see
[16:16] <arko> I think we can work something out
[16:16] <eroomde> was gonna find a hotel is pasedena just as easily
[16:16] <eroomde> well, it's still like a month away so no hurries
[16:16] <eroomde> in*
[16:16] <arko> Yeah, pasadena is $$$$$
[16:17] <arko> Brb
[16:17] <eroomde> my budget is probably $$/night
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[16:43] <cuddykid> http://www.amazon.co.uk/gp/product/B001BMSBD4/ref=nosim/?tag=hotukdeals-21
[16:45] <UpuWork> hey cuddykid
[16:46] <eroomde> cuddykid: i loathe those things
[16:46] <eroomde> with a passion
[16:47] <eroomde> completely crap
[16:47] <eroomde> get a decent quick release vice on a ball joint
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[16:47] <UpuWork> +1 for eroomde
[16:48] <UpuWork> http://www.panavise.com/index.html?pageID=1&page=full&--eqskudatarq=3
[16:48] <cuddykid> never used one myself, but saw it for £2 delivered
[16:48] <cuddykid> that does looks better
[16:49] <eroomde> a homeless man will probably give youone of his shits in a paper bag for £2
[16:49] <x-f> except the price :|
[16:49] <eroomde> doesn't mean you should ask for it
[16:49] <UpuWork> nice analogy eroomde
[16:49] <cuddykid> lol eroomde
[16:50] <fsphil> urg those things are horrible
[16:53] <eroomde> i have one of these: http://uk.rs-online.com/web/p/pcb-vices-workholding-systems/0546310/?searchTerm=546310&relevancy-data=636F3D3126696E3D4931384E525353746F636B4E756D6265724D504E266C753D656E266D6D3D6D61746368616C6C26706D3D5E5C647B367D247C5E5C647B377D247C5E5C647B31307D2426706F3D313426736E3D592673743D52535F53544F434B5F4E554D424552267573743D3534363331302677633D4E4F4E4526
[16:53] <eroomde> mounted on one of these: http://uk.rs-online.com/web/p/vice-accessories/0546281/?searchTerm=546281&relevancy-data=636F3D3126696E3D4931384E525353746F636B4E756D6265724D504E266C753D656E266D6D3D6D61746368616C6C26706D3D5E5C647B367D247C5E5C647B377D247C5E5C647B31307D2426706F3D313426736E3D592673743D52535F53544F434B5F4E554D424552267573743D3534363238312677633D4E4F4E4526
[16:54] <eroomde> i have in the past considered making one from a decent quality photography ball head for tripods
[16:55] <eroomde> which have quite a smooth and accurate lock and release mechanism
[16:55] <eroomde> and have a variety of accessories to put in it using the trip quick-release show
[16:55] <UpuWork> I tend to solder on a 10 cms x 10 cms antistatic matting that I can rotate around as needed
[16:55] <Randomskk> hey eroomde what's it called when you gegt stuck at a local maxima?
[16:55] <eroomde> eg vice, or straight camera mount for photographying things on the workbench as i often want to do, or different style of vice for gripping the edge of a pcb or whatever
[16:55] <eroomde> Randomskk: annoying?
[16:56] <Randomskk> the panavise things are nice
[16:56] <Randomskk> eroomde: not quite the word I was looking for :P
[16:57] <eroomde> not sure i'm afriad
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[16:57] <eroomde> i just know that's why god invented random walk algorithms like MCMC
[16:58] <Randomskk> indeed
[16:59] <eroomde> home time
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[17:26] <arko> MCMC is hot right now
[17:27] <arko> Its awesome stuff
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[17:42] <eroomde> PFs are quite analogous to MCMC
[17:42] <eroomde> in as cfar as they are basically the online version of the algorithm
[17:42] <eroomde> and they are also awesome
[17:42] <eroomde> so there is a lot of awesome to go round
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[17:52] <bertrik> sorry, what are MCMC and PFs?
[17:55] <x-f> hah, STS-2 landed a couple meters from a house
[17:56] <bertrik> never mind, this is statistics stuff, would probably be a waste of time to explain to me... :)
[17:56] <eroomde> bertrik: arko and Randomskk and I have a little side interest in stats
[17:56] <eroomde> sorry for jargon
[17:56] <eroomde> http://i.imgur.com/K7JFq.jpg
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[18:09] <x-f> radim_OM2AMR, congratulations on a successful launch and (looks like an easy) recovery!
[18:10] <radim_OM2AMR> hi x-f, thank you very much
[18:11] <radim_OM2AMR> it was hard night and day today, some systems didn't work as expected .. but we have good lessons learned :-)
[18:12] <x-f> yeah, i was reading the article on tech.sme.sk - you started veeery early this morning
[18:13] <radim_OM2AMR> :-) we did an advertisment to UKHAS too :-)
[18:15] <radim_OM2AMR> x-f in fact, we started yesterday morning, we prepared our "Houston" and everything for press during the night
[18:16] <x-f> there were a lot of press people?
[18:16] <x-f> i saw in the pics you had one with a video camera with you
[18:16] <x-f> on the chase that is
[18:17] <radim_OM2AMR> 3 people in "Houston" - Hjustn :-) , two in my chase car, one photographer in other car
[18:19] <radim_OM2AMR> yeah, I think it's nice experience, but I hope we will fly without press or TV next flights&
[18:19] <x-f> aww
[18:19] <x-f> that's what everybody says :)
[18:20] <radim_OM2AMR> ok, time to go to bed now, tomorrow I will start with errors analysis, it looks, that our 144.8 radiometrix lost power
[18:20] <x-f> it came back on the descent
[18:20] <x-f> good night
[18:21] <radim_OM2AMR> but just for one packet I think, fortunately there was RTTY tracking
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[18:22] <radim_OM2AMR> ok, thanx and "VERY BIG THANK YOU" TO ALL PEOPLE FROM UKHAS and this channel :-) someone cleared our strange GPS skip this morning in tracker :-)
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[18:53] <fsphil> BBC's video of our launch: http://www.youtube.com/watch?v=mpP50PgeaYs
[18:53] <fsphil> bbl
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[19:43] <Hix> " (TinyGPS does not handle retrieving serial data from a GPS unit.)"
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[19:43] <Hix> Is this correct? If so - that pants, how am I going to use it if it's only softwareserial?
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[19:44] <Randomskk> Hix: no it means the _library_ does not do the receiving itself
[19:44] <Randomskk> you have to get the data and give it to the library
[19:44] <Hix> phew!
[19:45] <Hix> so as long as I'm set to pins 0 and 1 it'll be fine?
[19:45] <Hix> I need my all in one testing board soonish!!
[19:46] <Randomskk> yea
[19:48] <Hix> speaking of which, Mitch has told me to get it down to 50x50mm and to order 10 not 5 for cheapest option ?!?! ok then 10 for less than 5, suppose its setup versus runs
[19:48] <Hix> though I'd assume they tile a shedload of gerbers and then cut them all up?
[19:49] <zyp> for small runs, setup is by far the dominating cost
[19:49] <G0MJW-PC> Time for the 23cms contest.
[19:50] <Hix> just weird that its cheper to get 10 than 5
[19:50] <Hix> but cool considering 100% e-test
[19:50] <zyp> «just get 10 so I don't have to throw away the other 5»
[19:50] <zyp> :p
[19:50] <Hix> this board design could get addictive, nothing better than doing CAd and then getting real world spat out
[19:51] <Hix> though I wish I could afford CNC in metals for some bits for cars telescopes cameras etc etc
[19:52] <zyp> and then you start wondering «how hard would it be to do this and that?», and go on to do more complex pcbs :p
[19:53] <zyp> like my «hmm, wonder how hard it would be to do bga»-board
[19:54] <Hix> I'm liking the idea of a stabilised gimbal camera / video support
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[19:55] <zyp> http://bin.jvnv.net/f/eaiEM.png http://bin.jvnv.net/f/Uby5B.png <- turns out bga is not so hard to do
[19:56] <zyp> http://bin.jvnv.net/f/Mv7rw.JPG <- and not especially hard to solder either
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[19:59] <Hix> anyone get recommendations for 0805 LEDs? Don't want 3000....
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[19:59] <Randomskk> farnell?
[20:00] <zyp> http://www.digikey.com/product-detail/en/LTST-C170KGKT/160-1414-1-ND/386776 <- I got this and other colors in that series for this board
[20:02] <Hix> hmm RS do them in 50's for ~£2.00 that'll do, thought they only did huge rolls last time a looked http://goo.gl/tB0w8
[20:03] <Hix> though they are 2v6, will 3v3 with resistors kill 'em?
[20:03] <zyp> of course not
[20:03] <zyp> that's the way to wire them.
[20:04] <Hix> wasn't sure about voltage, knew they'll pull as much current as they can till they pop
[20:05] <zyp> not really
[20:06] <zyp> if you apply less than 2.6V across them, they will not allow much current to pass :p
[20:07] <zyp> you can view it as a very nonlinear resistor
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[20:08] <zyp> when you have less than the forward voltage across it, it has a very high resistance, and when you have more than the forward voltage across it it has a very low resistance
[20:08] <Hix> ok
[20:09] <zyp> and since there is a part variance of the forward voltage, you can't rely on feeding it a constant voltage to find the sweet spot
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[20:10] <Randomskk> zyp: ooi what software was your bga pcb in?
[20:14] <zyp> judging by the number of times people have asked me that question, I guess it's not very obvious that I've just used eagle :p
[20:15] <Gadget-Mac> zyp: Very nice PCB, and soldering, reflow of some sort ?
[20:16] <zyp> of course, how would you else solder bga? :p
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[20:17] <SP9UOB_Tom> evening all
[20:17] <Randomskk> zyp: perhaps the better question is what software you used to render your gerbers then :P
[20:17] <zyp> gerbv
[20:17] <Randomskk> huh, fe
[20:17] <Randomskk> nice choice of colour scheme.
[20:18] <Upu> eagleup works too
[20:18] <Randomskk> how come you have teardropped traces? that eagle script?
[20:18] <Randomskk> or are they manual?
[20:18] <zyp> used the included ulp
[20:19] <Randomskk> yea ok
[20:19] <zyp> was a bit disappointed it wouldn't do teardrops on the bga pads though
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[20:20] <zyp> Upu, sounds like too much work, and I'm not interested in 3D models, I just wanted to review the board like it would look fabbed before assembly :p
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[20:22] <Upu> no its really easy and you can check it for "stupids" really quickly
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[20:24] <zyp> Upu, what kind of stupids?
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[20:25] <Upu> putting components under say RFM22B's for example
[20:25] <natrium42> lol
[20:26] <natrium42> that's what keep-out layers are for :P
[20:26] <Upu> indeed
[20:26] <Upu> that wasn't mine btw
[20:26] <zyp> under as in opposite side?
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[20:26] <Upu> well you know how you can't flip the board in Eagle
[20:26] <Upu> and see what your actually doing
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[20:27] <Upu> sometimes stuff can get lost underneth
[20:27] <zyp> what do you mean?
[20:27] <Upu> give me 2 mins
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[20:29] <Upu> ok spot the cock up : http://imgur.com/a/UTZf3
[20:29] <Upu> very hard to see on the top one
[20:29] <Upu> easy on the bottom
[20:30] <natrium42> lol
[20:30] <zyp> very easy on top one if you don't insist on having all the layers turned on at once.
[20:30] <daveake> Just got in and I see "cock up" and "easy on the bottom"
[20:30] Action: daveake checks channel
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[20:30] <Upu> still the right one
[20:30] <Upu> well I like it, good for checking stuff you don't immediatly notice within eagle
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[20:31] <zyp> also, your 3D drawing doesn't look that different from my gerbv renders :p
[20:31] <zyp> 3D render*
[20:31] <mattbrejza> on the rfm when do four pins only connect to each other :/
[20:32] <Upu> http://mayhewlabs.com/webGerber/ is also nice
[20:32] <zyp> I'm just saying the 3D part doesn't add much for me
[20:32] <Upu> GPIO's to RX_ANT and TX_ANT the internal antenna switch mattbrejza
[20:32] <mattbrejza> oh :/
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[20:33] <HixPad> Is using a pot on ntx2 bad form?
[20:33] <mattbrejza> suppose it makes sense really
[20:33] <Upu> RFM22B has an internal antenna switch to switch between RX and TX
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[20:35] <zyp> it's similar to the antenova gps module that runs the antenna out on a pad and back in again so you can add a custom matching network to compensate for the antenna detuning caused by your board and enclosure
[20:37] <Upu> I see an fsphil http://www.youtube.com/watch?v=mpP50PgeaYs
[20:37] <zyp> http://bin.jvnv.net/f/sTW8U.JPG <- thus the unpopulated pads next to it
[20:38] <Upu> nice board that
[20:39] <zyp> yeah, I should probably get back to that project soon
[20:41] <fsphil> that's 10 fsphil points Upu
[20:41] <Upu> was that deployed parachute making it a wobbly ascent ?
[20:42] <fsphil> I think so
[20:42] <fsphil> I'll put it inline next time
[20:42] <Upu> I normal make the parachute load bearing so its not deployed but that looked deployed all the way up and the whole thing was wobbly
[20:43] <Upu> normally
[20:43] <Upu> however nice vid
[20:43] <OZ1SKY_Brian> yes nice video phil
[20:43] <natrium42> i see brits
[20:44] <Upu> You do natrium42
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[20:44] <fsphil> they did a good job
[20:45] <fsphil> note the obviously fake 'team finding the payload' scene
[20:45] <natrium42> should make a panorama photo from the footage
[20:45] <fsphil> I did a quick one, need to spend more time at it
[20:45] <fsphil> hugin is a bit fiddly, so might try that ms one
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[20:49] <fsphil> have to say it's nice having video of the parachute and balloon
[20:49] <fsphil> just to be able to watch how it behaves
[20:51] <OZ1SKY_Brian> is there some way to playback our launch in the tracker, to study the wobbly accent rate etc?
[20:51] <OZ1SKY_Brian> or how do you do a playback?
[20:52] <fsphil> you can plot the track in google earth
[20:52] <OZ1SKY_Brian> that will not give me accent rate vs time vs altitude etc
[20:53] <fsphil> nope
[20:53] <fsphil> you could calculate that from the data in a spreadsheet
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[20:53] <Lunar_Lander> hello
[20:53] <fsphil> the eagle has landed
[20:54] <OZ1SKY_Brian> fsphil yeah thats my problem, excel is a weak side here
[20:54] <fsphil> here too
[20:55] anerDev (~anerDev@host91-105-dynamic.17-87-r.retail.telecomitalia.it) joined #highaltitude.
[20:55] <anerDev> Hi guys !!!
[20:55] <fsphil> howdy anerDev
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[20:57] <anerDev> I have resolved the problem of yestarday ! Now I think the configuration of the software gqrx work !! CC daveake
[20:57] <anerDev> who can tell me that my configuration is correct ? I send the screen shot
[20:58] <fsphil> just post it in channel
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[21:00] <anerDev> ok, one moment
[21:01] <anerDev> http://d.pr/i/6unf and http://d.pr/i/qlm8
[21:01] <anerDev> I'm using the blink configuration
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[21:03] <fsphil> looks fine. you're rtty shift seems to be quite high
[21:05] <fsphil> they should be about 300hz apart, yours looks to be 30000hz
[21:06] <HixPad> Can you use pots to adjust the shift or do they suffer with temp shift
[21:07] <fsphil> for shifts that high, it's better to change the resistors
[21:07] <fsphil> use the pot to fine tune it
[21:07] <fsphil> (the ntx2 has a pot under the label)
[21:07] <anerDev> i have the 434.650 MHz transmitter
[21:08] <fsphil> the project cirrus guys used two pots to set theirs
[21:08] <fsphil> and it worked fine afaik
[21:08] <anerDev> ok, now I'm listen a bip-bip like sputnik ! huahuahu http://d.pr/i/3VDK
[21:09] <fsphil> anerDev: did you get my comment earlier? the shift of your signal is much too wide
[21:10] <anerDev> whre I change the shift ?
[21:10] <fsphil> you need to change the resistor values you're using between the microcontroller and the avr
[21:10] <fsphil> what resistors do you have there at the moment?
[21:12] <anerDev> one moment
[21:13] <anerDev> I'm using arduino
[21:13] <anerDev> need you the value
[21:13] <anerDev> of the resistor between ntx2 and digital pin ?
[21:13] <fsphil> yes
[21:13] <fsphil> or take a picture
[21:13] <anerDev> ok ok
[21:13] <fsphil> that might be easier
[21:15] <anerDev> http://d.pr/i/zyYu
[21:15] <fsphil> hmm can't tell from that
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[21:16] <fsphil> can you also take a picture of the underside
[21:17] <anerDev> from oppisite side ?
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[21:17] <anerDev> undersite, the route of the "pcb" ?
[21:17] <fsphil> yes
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[21:19] <anerDev> ok, one moment
[21:20] <Upu> I think you're out by a track anerDev
[21:20] <Upu> http://i.imgur.com/Vcixm.jpg
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[21:21] <Upu> well unless that is linked to GND under neth
[21:23] <daveake> Not just that; if it is (as it looks) 1 track out, then the signal from the Arduino is going to the GND pin
[21:24] <anerDev> the red line go to vcc
[21:24] <anerDev> in my pcb
[21:24] <Lunar_Lander> hi dave & anthony
[21:24] <Upu> hi Lunar
[21:25] <daveake> anerDev I'm pretty sure you've wired that up wrong
[21:25] <daveake> you don't need a vcc line there as you have (well, you should have) one going to vcc and enable on the NTX2
[21:25] <Lunar_Lander> anthony did I show you the final modification to my board?
[21:25] <daveake> Anyway we're just guessing till you show us the underneath of that board
[21:26] <daveake> hi LL
[21:26] <daveake> final mod? When are you launching then? I'll need to find my passport :)
[21:26] <Lunar_Lander> hi
[21:26] <Lunar_Lander> XD
[21:26] <Lunar_Lander> ah I have to see as currently it looks like there will be solid state physics on Jan. 29th
[21:26] <anerDev> I use this scheme !
[21:26] <anerDev> http://ukhas.org.uk/_detail/guides:ntx2.png?id=guides%3Alinkingarduinotontx2
[21:27] <daveake> anerDev On second thoughts you may have wired it up right. However sending us the diagram you wired to doesn't tell us if it's actually wired correctly!
[21:29] <anerDev> ok, now I write on a paper the scheme
[21:29] <anerDev> one moment
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[21:32] <Lunar_Lander> Upu, http://s.gullipics.com/image/u/1/v/5yvng5-kj57jt-wqin/IMG6523.jpeg
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[21:35] <fsphil> how is the arduino connected to that board?
[21:35] <KT5TK_QRL> anerDev: This doesn't look like a 20kOhm resistor. According to the rings it's a 22 Ohm r.
[21:38] <anerDev> yess
[21:38] <anerDev> wrong resistor !
[21:38] <anerDev> :/
[21:38] <anerDev> 22 Ohm
[21:42] <Lunar_Lander> Upu, seen it?
[21:42] <daveake> Looking good LL. Much improved.
[21:43] <anerDev> tomorrow I will change !
[21:43] <anerDev> but
[21:43] <anerDev> how can I view the rtty string in fl.dligi ?
[21:43] <Lunar_Lander> thanks
[21:44] <anerDev> with a program like a soundflower ?
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[21:48] <anerDev> ?
[21:49] <craag> rtty string that you have in an audio file?
[21:49] <craag> oh, are you using an sdr?
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[21:50] <anerDev> for now I'm using gqrx
[21:50] <craag> anerDev: Try setting the soundflower card as output in gqrx, and input in dl-fldigi
[21:51] <anerDev> and i listen the bip-bip, the sound tipical of rtty comunicaion
[21:51] <anerDev> ok, one moment
[21:51] <craag> I haven't used soundflower myself, but it should be something like that.
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[21:53] <anerDev> this is how I listen with grqx
[21:53] <anerDev> http://d.pr/a/q7yd
[21:53] <anerDev> now I'm setting fl-digi
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[21:54] <anerDev> for the rtty setting, in fl.digi
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[21:54] <anerDev> what's the correct parameters ?
[21:54] <craag> Erm, what's your shift on that?
[21:55] <anerDev> shift 425, baud 50 bit 8 parity none stop bit 2
[21:55] <anerDev> is correct ?
[21:55] <fsphil> your shift at the moment is too high to decode
[21:55] <craag> I'm only seeing one side of your RTTY
[21:55] <fsphil> you need to fix that resistor
[21:55] <anerDev> ah ok ok
[21:56] <fsphil> those two lines should be very close
[21:56] <anerDev> tomorrow i will change the resistor !
[21:56] <anerDev> but this setting are correct ? http://d.pr/i/qyyA
[21:56] <craag> Completely depends on your code, and the resistor.
[21:57] <fsphil> yea you can't be sure until the hardware is working
[21:57] <anerDev> ah ok ok
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[21:57] <anerDev> tomorrow I'll change the resistor
[21:57] <anerDev> and I contact you in this channel
[21:57] <anerDev> ok ?
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[21:58] <craag> I don't know if you're talking to me or fsphil. I won't be around tomorrow, have a 2 hour multiple-choice exam on Contract Law.
[21:58] <bertrik> anerDev: oh nice, you got the transmitter to work?
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[22:02] <anerDev> I don't understand :/ sorry ! can you re-ask the question ?
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[22:05] <anerDev> good night guys ! Tomorrow I'll go to school
[22:06] <fsphil> nite!
[22:07] <natrium42> yay school !
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[22:08] <Lunar_Lander> xD
[22:08] <fsphil> hogwarts
[22:08] <fsphil> he's a wizard!
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[22:12] <Lunar_Lander> XD
[22:12] <KT5TK_QRL> PecanPico2 is soldered and has survived the "smoke-test": http://tkrahn.dyndns.org/gallery2/main.php?g2_itemId=9178
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[22:13] <KT5TK_QRL> Now the hard part starts: software
[22:14] <fsphil> that's the fun part!
[22:14] <KT5TK_QRL> Any pointers on how to code a driver for the Si4464 chip are welcome
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[22:17] <bertrik> it's always a good idea to build it in layers, each with its own responsibility
[22:17] <fsphil> now that looks interesting
[22:19] <KT5TK_QRL> http://tkrahn.dyndns.org/download/PecanPico2/PecanPico2Sch.pdf if that helps
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[22:22] <Upu> Thomas speak to Navrac when he's on
[22:23] <KT5TK_QRL> Thanks for the hint. Did he use that chip before?
[22:23] <Upu> I do lol when I see the BMP085 looking massive
[22:24] <Upu> I've been chatting with him about doing basically what you've done
[22:24] <Upu> I think he has an idea on how to code it
[22:24] <Upu> might be wrong
[22:24] <Lunar_Lander> coding the BMP085?
[22:24] <Upu> I don't think its too disimilar to the RF22
[22:24] <Upu> no Lunar the RF22
[22:24] <KT5TK_QRL> Yeah the BMP085 is much larger than the real time clock :)
[22:24] <Lunar_Lander> ah
[22:24] <Upu> the RF22 is a SI41something
[22:25] <Upu> and the registers are similar
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[22:25] <Upu> https://dl.dropbox.com/u/63720513/PDFS/Si4430-31-32.pdf = https://dl.dropbox.com/u/63720513/PDFS/RF22.pdf
[22:26] <Upu> and the libraries for that part are fairly well established
[22:30] <KT5TK_QRL> http://www.silabs.com/Support%20Documents/TechnicalDocs/AN633.pdf covers all of them
[22:31] <Upu> try it with the RF22 libraries
[22:31] <Upu> the GPIO's won't need setting as you don't have an antenna switch ?
[22:32] <KT5TK_QRL> No, I just use the GPIOs to indicate the transmit/receive status with LEDs
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[22:33] <Upu> be interest to know how you get on with it
[22:34] <Lunar_Lander> did you get my PM btw?
[22:34] <Upu> I saw it
[22:34] <Upu> I thought you were talking to yourself :)
[22:35] <Lunar_Lander> yea
[22:35] <Lunar_Lander> xD
[22:35] <Lunar_Lander> sorry
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[22:35] <OZ1SKY_Brian> lol
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[22:35] <Lunar_Lander> btw KT5TK_QRL why do you have two power supplies with the same voltage?
[22:36] <Upu> so he can switch the GPS on and off
[22:36] <KT5TK_QRL> I shut off the GPS with the enable pin of the regulator
[22:36] <Upu> Any reason that way over a FET ?
[22:36] <Lunar_Lander> ah
[22:37] <KT5TK_QRL> Fet would be fine too, but it worked well this way for me.
[22:37] <Upu> ok just checking because I've just used a fet
[22:38] <Upu> and I was hoping you didn't turn round and say something like "because if you use a FET god kills a kitten" or something
[22:38] <Lunar_Lander> XD
[22:39] <KT5TK_QRL> I had trouble with changing loads so I decided to get them completely independent supplies
[22:40] <KT5TK_QRL> That was on an earlier board with the Venus GPS though
[22:40] <Upu> ok well still testing my board
[22:40] <Upu> something up with it
[22:40] <Upu> the GPS freezes
[22:40] <Upu> no idea why might be a faulty GPS
[22:40] <Upu> just working through things though
[22:41] <KT5TK_QRL> That is after you shut it off?
[22:41] <KT5TK_QRL> Do you have the I2C lines connected?
[22:42] <Upu> No its hardwired on at the moment
[22:42] <Upu> it gets a time signal then the clock just freezes
[22:43] <Upu> might be a faulty GPS module but it would be the first one I've ever had
[22:43] <Upu> Hardware on
[22:43] <Upu> I2C not connected
[22:43] <Upu> using serial
[22:44] <KT5TK_QRL> I had trouble before since the uBlox MAX6Q tried to become the master of the I2C bus when it was powered on
[22:45] <KT5TK_QRL> It killed the communication to the BMP085 then
[22:46] <Upu> yeah not been brave enough to use I2C yet
[22:48] <Upu> right I'm off night all
[22:48] <Lunar_Lander> night anthony
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[22:49] <OZ1SKY_Brian> is my stb messed up or is bbc 1 and 4 showing the same thing?
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[22:50] <OZ1SKY_Brian> forget it, its my stb
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[23:50] <OZ1SKY_Brian> gn
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[00:00] --- Wed Jan 16 2013