highaltitude.log.20110725

[00:04] <nickolai> hm, i thought the rv button just switches the space and mark pins?
[00:04] <fsphil> it does
[00:04] <nickolai> when we switched the radio to usb mode we didn't hear anything
[00:05] <hibby> nickolai: you'd likely need to retune
[00:05] <fsphil> you need to retune
[00:05] <fsphil> LSB and USB select the 3khz on either side of the dial frequency
[00:05] <SpeedEvil> USB is below the tuned frequency, LSB above
[00:05] <SpeedEvil> err - other way round
[00:05] <nickolai> ooo
[00:06] <fsphil> with lsb inverting the whole lot
[00:06] <hibby> upper sideband and lower sideband
[00:06] <hibby> mirror images of one another
[00:06] <hibby> centered around the carrier frequency...
[00:06] <fsphil> (the whole idea of sidebands confused me for years, before I found the internet :)
[00:07] <hibby> which is one of the reasons your rtty will never be exactly at the frequency your radio module says it transmits at
[00:07] <nickolai> hm
[00:07] <hibby> like so: http://en.wikipedia.org/wiki/File:SSB_bandform.svg
[00:08] <SpeedEvil> ssh root@phone beep
[00:08] <SpeedEvil> oops
[00:08] <hibby> haha
[00:08] <fsphil> *beep*
[00:08] <fsphil> wait a second
[00:08] <hibby> root? get secure!
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[00:13] <nickolai> well now that i've gotten the transmitter to work with some reliability, i'm moving on to reading the gps sentences and sending them through the transmitter
[00:13] <nickolai> unfortunately, the library i was using for arduino (TinyGPS) doesn't work on the chipkit
[00:13] <nickolai> what a surprise...
[00:13] <nickolai> i guess i can just send all the gps data, character by character
[00:14] <hibby> nickolai: what chipset are you using?
[00:14] <hibby> as there's a modified version for the ublox chipset
[00:15] <nickolai> uno32
[00:15] <nickolai> i'm not talking about the gps i'm talking about the microcontroller
[00:15] <hibby> does that work at high altitude?
[00:16] <hibby> ah
[00:17] <hibby> could always port one
[00:17] <nickolai> my gps chip is an ism300f2
[00:18] <nickolai> and i'm saving the gps data to an onboard sd card, but on the uno the ram is really small so therefore my gps buffer is really small. someone told me about the pic-based chipkit boards, which have 8x the ram and are supposed to be arduino compatible
[00:18] <nickolai> except the arduino compatible bit is a work in progress
[00:18] <nickolai> the list of libraries that are compatible is much smaller than the list that are not compatible
[00:18] <hibby> aye
[00:19] <hibby> I don't know much about the gps chip, but it'w worth checking the ceiling altitude is greater than 16km, as many of them are
[00:19] <hibby> some are even 12
[00:19] <hibby> anyhoo
[00:20] <hibby> im going for a wander as I've not been outside today
[00:20] <nickolai> yea i've checked it, there's a site that lists a bunch of receivers that have passed the 60k test and the manufacturer page specifically lists its ceiling as 135000 ft
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[03:00] <griffonbot> @LVL1WhiteStar: Finally getting to test the ballast algorithm at the 11th hour - of course it doesn't work as expected :-) #ukhas [http://twitter.com/LVL1WhiteStar/status/95327634996740096]
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[05:41] <Upu> morning
[05:42] <Dan-K2VOL> morninhg
[05:42] <hibby> morning
[05:43] <hibby> Dan-K2VOL: this is no time for slacking on IRC!
[05:43] <hibby> get back to work!
[05:43] <Dan-K2VOL> haha
[05:43] <Dan-K2VOL> I thought the balloon would make a nice canopy for chatting under
[05:44] <hibby> what, to protect you from the inclement weather and let you breathe the helium to raise your voice?
[05:46] <Dan-K2VOL> indeed, the roof leaks, so that's plausible
[05:46] <hibby> haha
[05:46] <hibby> It's definately a much larger space than our wee corner
[05:47] <hibby> http://www.electronclub.org/doku.php
[05:47] <Dan-K2VOL> I"m in the part that's not ours, it's empty so the landlord lets us sort of us it
[05:48] <hibby> hahah
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[07:03] <jcoxon> morning all
[07:03] <griffonbot> @LVL1WhiteStar: Climbing too fast, falling too slow. Leaving it alone to fly alone overnight. #UKHAS [http://twitter.com/LVL1WhiteStar/status/95388697293361154]
[07:04] <jcoxon> ping fsphil
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[07:50] <fsphil> morning jcoxon
[07:52] <Upu> morning
[07:52] <fsphil> morning Upu
[07:52] <fsphil> but cloudy here so far
[07:52] <fsphil> but/bit
[07:54] <jcoxon> fsphil, saw that you were begininng the merg
[07:54] <jcoxon> e
[07:54] <jcoxon> wondering how that was going
[07:57] <fsphil> it went a bit better than the last time, everything seems to be working
[07:57] <jcoxon> ready to be pulled in?
[07:58] <fsphil> give me a minute, I'll test it on some actual data to the tracker
[07:58] <jcoxon> its cool - it can wait
[07:59] <fsphil> there seems to have been a surge in activity on fldigi
[07:59] <fsphil> when I started doing the imaging stuff there was nothing going on
[08:01] <jcoxon> :-)
[08:04] <fsphil> nope, there's a bug there - it's not picking up the strings
[08:06] <fsphil> right, breakfast before hacking :)
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[08:15] <Darkside> hmm
[08:15] <Darkside> need to see what the local airport is launching
[08:15] <Darkside> i.e. what vaisala sondes they are using
[08:19] <SamSilver_> Darkside: you might get some help from this site http://groups.yahoo.com/group/sondemonitor/
[08:22] <Darkside> yeahi know all about that :P
[08:22] <Darkside> i hope to meet bev while i'm here
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[08:38] <g4dpz> HI, I'm trying to get hold of Ed Moor to talk at the AMSAT-UK meeting next weekend. Does anyone have any up to date contact details. Thanks Dave, g4dpz@amsat.org
[08:39] <g4dpz> Sorry this weekend!
[08:40] <g4dpz> If you've got any near space talks that you would like to present at the AMSAT meeting in Guildfaord you would be very welcome. Same emil address g4dpz@amsat.org
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[08:59] <g4dpz> Blatant advert for AMSAT-Uk Meeting: http://www.uk.amsat.org/colloquium-2011
[09:01] <fsphil> subtle
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[09:23] <fsphil> (re-running a recording of a flight on the tracker - incase anyone thinks there's a launch)
[09:25] <BalHare> you are such a tease!!
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[09:26] <fsphil> sowwy :)
[09:27] <fsphil> neat to see actually, I was busy in the car when this was going on
[09:27] <fsphil> there's a few odd bumps in the altitude graph too
[09:27] <fsphil> look like gps glitches
[09:28] <BalHare> steady rate of climb
[09:28] <BalHare> so far
[09:29] <fsphil> it was pretty steady all the way iirc
[09:29] <fsphil> (there's fake live images on http://www.sanslogic.co.uk/ssdv/live too ;-)
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[09:30] <BalHare> bugger they have censor strips of the juicy bits
[09:31] <BalHare> over = of
[09:31] <fsphil> lol
[09:31] <fsphil> those where to hide the UFOs
[09:31] <M0JSN> :o
[09:32] <BalHare> looks like photo shop job to try an make the earth look round and stuff
[09:32] <BalHare> fake!!
[09:32] <fsphil> wide angle ftw :)
[09:32] <fsphil> but yea, I think it's cheating a bit
[09:32] <BalHare> I swatch this flight live
[09:33] <BalHare> watched
[09:33] <fsphil> the canon a560 pictures showed very little curvature, even at its highest altitude
[09:33] <BalHare> how do I change my nicname
[09:33] <BalHare> I have forgotten
[09:33] <fsphil> type: /nick <new nickname>
[09:33] Nick change: BalHare -> SamSilver
[09:34] <fsphil> hi dave!
[09:34] <SamSilver> thanx
[09:34] <SamSilver> lol hi ther
[09:34] <fsphil> I stripped some code out of dl-fldigi, just testing to make sure I haven't broken anything
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[09:34] <SamSilver> I have pc at work and two at home and work is just 76 steps from home
[09:34] <fsphil> it looked innocent enough :)
[09:35] <fsphil> handy
[09:35] <fsphil> it's a 40 minute walk from my home to work, and I've only done it twice so far
[09:35] <SamSilver> the code for digitizing the jpegs?
[09:36] <SamSilver> is what you stripped out
[09:36] <SamSilver> ?
[09:36] <fsphil> it was code that seemed to be playing with fldigi's logger
[09:36] <fsphil> part of the bit that extracts a telemetry string
[09:37] <SamSilver> how hard is it going to be to decode morse on 40m as that is what I hope to use on my long distance record attempt
[09:37] <fsphil> some of the US flights use morse
[09:37] <SamSilver> hell or morse?
[09:38] <fsphil> computer decoders are not brilliant, really needs a human ear
[09:38] <fsphil> morse
[09:38] <fsphil> CW
[09:38] <GW8RAK> Depends on what you are sending SamSilver. If you know what you are expecting to hear, even the untrained, or lightly trained, ear can decode it.
[09:38] <SamSilver> will be running morse slower enough for carbon life forms to decode
[09:39] <GW8RAK> Things get difficult when you don't know what it will be sending.
[09:39] <SamSilver> right
[09:40] <GW8RAK> If only payload identity in text and the rest is numbers, then around 5wpm is easy to decode.
[09:40] <SamSilver> so if you expecting a call sign followed by a sh!t load of digits it
[09:41] <SamSilver> will be all good for the newbies
[09:41] <GW8RAK> By the time you've finished testing it, you'll know exactly what the callsign sounds like and you'll even hear mistakes
[09:41] <fsphil> booo.. gnome 3 has locked up
[09:41] <fsphil> sounds like good CW practice
[09:42] <GW8RAK> May not be good for all listeners, but amateurs will certainly listen in.
[09:42] <russss> surely the digital modes with error correction are going to get a better range than CW though?
[09:43] <SamSilver> russss: some folk have done trans atlantic on 10 mW
[09:43] <SamSilver> 40 m morse
[09:44] <russss> well, this is all a bit dependent on the mysteries of propagation. But didn't I hear that someone had done US to Australia on 5W using DominoEX?
[09:44] <fsphil> my 500mw WSPR signal was heard in australia
[09:44] <fsphil> though that's 2 minutes to transmit very little data
[09:45] <GW8RAK> Speed, range and accuracy. Choose any 2, but you can't have all 3, IIRC
[09:46] <SamSilver> GW8RAK: you hit the nail on the head
[09:47] <GW8RAK> Lots of people don't realise that. PSK31 has a lot to recommend it, but speed isn't one of them and even accuracy is not that great.
[09:47] <fsphil> psk31 misses characters all over the place
[09:47] <GW8RAK> But it is cheap. I should have included that above. :)
[09:47] <SamSilver> I will be using 5watts morse on 40m into 1/2 wave dipole as Tx
[09:48] <russss> meh, accuracy should be a moot point with error correction
[09:48] <fsphil> maybe you should consider two modes SamSilver
[09:48] <fsphil> CW and something like olivia or dominoex
[09:48] <GW8RAK> 5W CW should get you just about anywhere you want to get.
[09:48] <SamSilver> fsphil: what would you recomend as 2nd mode
[09:49] <fsphil> I'm quite fond of olivia -- when matt and I tested it, it seemed the most reliable
[09:49] <SamSilver> I will launching from South Africa
[09:49] <SamSilver> I will reasearch olivia thnx
[09:49] <russss> IIRC we're still getting >1kilobit/sec from Voyager 2, so there's no excuse ;)
[09:49] <russss> although, granted that is line-of-sight.
[09:50] <GW8RAK> AMTOR FEC is an old mode and has been largely forgotten, but it is still in commercial use.
[09:50] <fsphil> and a somewhat big receiver antenna :p
[09:50] <russss> pfft
[09:50] <GW8RAK> And easy to implement
[09:50] <SamSilver> olivia MFZK ??
[09:51] <russss> to be fair, it's a lot easier to build a big HF antenna than it is to build a big X-Band antenna
[09:51] <SamSilver> is there just the one type of olivia?
[09:52] <fsphil> MFSK - it has different options, for number of tones and the spacing
[09:52] <fsphil> the most common seems to be 16/500 (16 tones, 500 hz)
[09:52] <SamSilver> I am in wikipedia it sound toooo gooood to be true
[09:53] <fsphil> it is very nifty -- at one point I couldn't see it on the waterfall or hear it from the speaker, but it still decoded
[09:53] <fsphil> I think it's more radio black magic
[09:54] <fsphil> it will need a fairly stable frequency though - might be an issue for a hab flight where temperature is all over the place
[09:55] <fsphil> brb, needa kill gnome 3
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[09:55] <M0JSN> lol
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[09:56] <M0JSN> what happened to gnome?
[09:56] <fsphil> all the menus locked up
[09:56] <M0JSN> :(
[09:56] <fsphil> only the alt+tab switcher was working
[09:56] <M0JSN> do you use compiz/
[09:56] <M0JSN> ?
[09:56] <fsphil> yea
[09:57] <fsphil> well, gnome-shell
[09:57] <M0JSN> you could try mutter --replace
[09:59] <M0JSN> or "compiz --replace &" for that matter
[10:01] <fsphil> not sure gnome3 uses compiz
[10:01] <SamSilver> I intend to use a TCXO running at 28 mHz which is very stable and temp compensated followed bu a D type flip flip running as a divide by 2 followed by another div by 2
[10:02] <M0JSN> fsphil: hmm it can do, maybe not by default
[10:02] <SamSilver> so then it will be 4 times more stable the very stable
[10:02] <SamSilver> the = than
[10:03] <SamSilver> finfers crossed
[10:03] <SamSilver> fingers
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[10:04] <SamSilver> fsphil: I like what I am reading about Olivia
[10:04] <SamSilver> you have a convert!
[10:06] <SamSilver> sounds like trry played down a drain-pipe and it makes the dog go crazy
[10:06] <SamSilver> rtty
[10:07] <SamSilver> the dog looks like a ridge back his hair is standing up and he wants at the 550Hz 16 tones
[10:09] <fsphil> it does sound really odd
[10:09] <fsphil> lol
[10:10] <fsphil> I'd love to test it, but I doubt I'd hear you over the noise here
[10:11] <SamSilver> hadie come to a stop?
[10:11] <fsphil> yea- stopped the playback
[10:12] <fsphil> tested all I needed to test
[10:12] <fsphil> heh, stopped over a forest
[10:12] <SamSilver> no circles mid ocean over 0:0
[10:12] <SamSilver> 00:00
[10:13] <SamSilver> I realy need a cup of coffee
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[10:13] <fsphil> my mutt needs fed and walked, or he'll eat me
[10:13] <SamSilver> I went to the eyedoctor on friday as my left eye was playing up
[10:14] <SamSilver> and she tells me I have a "flouter:\"
[10:14] <SamSilver> flouter
[10:14] <fsphil> floater?
[10:14] <SamSilver> floater
[10:14] <SamSilver> need coffee baaad
[10:14] <SamSilver> yes a floater in my eye
[10:14] <fsphil> hate those
[10:14] <russss> yeah I have several of those
[10:15] <SamSilver> I burst out LOLing and she looked at me all strange
[10:15] <fsphil> lol
[10:15] <SamSilver> really russss ??
[10:15] <russss> yeah they are quite common
[10:15] <SamSilver> in your eye or arhad?
[10:15] <russss> "These are present in most people's eyes" according to wikipedia
[10:16] <russss> http://en.wikipedia.org/wiki/Floater
[10:16] <fsphil> I used to get them a lot when I was tiny, not so much anymore
[10:16] <SamSilver> well you live and you learn
[10:16] <SamSilver> thanx I have not taken the time to look into it
[10:16] <GW8RAK> SamSilver, what hardware are you using to generate the olivia tones?
[10:18] <SamSilver> GW8RAK: I just found out about olivia but when I was playing them for the dog I was using the laptops speakers
[10:19] <GW8RAK> Sorry, didn't phrase the question correctly. Which hardware on the balloon?
[10:19] <SamSilver> fsphil: told me about olivia just 15 mins ago
[10:19] <GW8RAK> Or is that TBD?
[10:19] <GW8RAK> to be decided.
[10:20] <SamSilver> the plan is to do a test of ballast and 40m Tx some time early November with APRS 144.800 as back up
[10:21] <SamSilver> well the 40m Tx was designed just as a morsed transmitter
[10:21] <SamSilver> I intend to use a TCXO running at 28 mHz which is very stable and temp compensated followed bu a D type flip flip running as a divide by 2 followed by another div by 2
[10:21] <GW8RAK> I'm just wondering how to produce multiple accurate tones.
[10:22] <SamSilver> me too
[10:22] <fsphil> that bit could be fun
[10:23] <SamSilver> cw is easy just a bit of shaping so as to minamise the clicks and chirps
[10:23] <GW8RAK> I was wondering if there was a simple way which I'd overlooked.
[10:23] <SamSilver> 16 tons and what do you get there was a song that went like that
[10:24] <SamSilver> 16 tones is another story
[10:24] <SamSilver> http://en.wikipedia.org/wiki/Olivia_MFSK give some info
[10:25] <Upu> SamSilver floaters are normal but if you get alot or "lights" you need to get it sorted quick
[10:25] <Upu> you'll be prone to them if like me you're short sighted
[10:26] <GW8RAK> A PC soundcard can DSP all the tones, but how to do it easily and without much mass or power requirement?
[10:26] <SamSilver> no lights just looks like an eyelash
[10:26] <SamSilver> again GW8RAK you HTNOTH
[10:27] <fsphil> need some way to FM the signal
[10:27] <SamSilver> hit the nailn the head
[10:27] <GW8RAK> I worked out that nmemonic!
[10:27] <GW8RAK> Normally I have to google them.
[10:27] <SamSilver> DTMF
[10:27] <GW8RAK> There must be a chip to do it. Are DTMF tones preset?
[10:28] <fsphil> Drop the manual, fool?
[10:28] <SamSilver> lol
[10:28] <GW8RAK> Okay fsphil, [end nmemonic mode]
[10:28] Action: fsphil gets his coat
[10:28] <SamSilver> I am reading up at the moment
[10:28] <fsphil> I'm trying olivia at the moment
[10:28] <SamSilver> don't forget the dog
[10:29] <fsphil> oh he won't let me
[10:29] <GW8RAK> How about a frequency synthesiser?
[10:32] <SamSilver> I can't work out how the tone frequency is decided in relation ship to the number of tones
[10:32] <SamSilver> The number of tones can be 2, 4, 8, 16, 32, 64, 128 or 256. The bandwidth can be 125, 250, 500, 1000 or 2000 Hz.
[10:33] <SamSilver> I am making coffee at the moment
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[10:41] <SamSilver> The waveform generator is based on the 8000 Hz sampling rate. The tones are spaced by 256 samples in time and the window that shapes them is 512 samples long. The demodulator is based on the FFT with the size of 512 points.
[10:41] <SamSilver> The tone spacing in frequency is 8000 Hz/256 = 31.25 Hz and the demodulator FFT has the resolution of 8000 Hz/512 = 15.625 Hz thus half of the tone separation.
[10:41] <SamSilver> the above is from wikipedia but is going over my head
[10:42] <SamSilver> http://en.wikipedia.org/wiki/Olivia_MFSK
[10:42] <SamSilver> back in a jiff coffee time
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[10:48] <SamSilver> back
[10:49] <fsphil> re
[10:51] <SamSilver> http://hflink.com/olivia/
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[11:14] <Laurenceb> ive used mfsk64 before
[11:14] <Laurenceb> i wanted a lot of throughput
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[11:37] <fsphil> "My favourite is Multipsk" ... now there's a comment I never thought I'd see online
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[11:38] <Laurenceb> whats that?
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[11:39] <fsphil> it's like fldigi
[11:39] <fsphil> only... disturbing
[11:39] <M0JSN> lol
[11:45] <Laurenceb> ok the gui looks a little... hyperactive
[11:47] <SamSilver> Looks like Olivia can send pictures http://forums.ham-radio.ch/showthread.php?10229-MFSK-16-pictures
[11:47] <fsphil> that's MFSK16, different mode
[11:47] <GW8RAK> It's okay once you get used to it.
[11:47] <GW8RAK> It is French after all :)
[11:48] <SamSilver> bugger
[11:49] <fsphil> it's very similar to sstv too
[11:50] <GW8RAK> Right, off home to do some painting while the weather is good. Must remember not to turn the radio on, or no painting.
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[11:59] <SamSilver> afk
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[12:31] <rjharrison> afternoon all
[12:32] <rjharrison> Kepp your fingers x'ed for me on wx the w/e
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[12:35] <number10> are u planning a launch rjharrison
[12:36] <rjharrison> Yep 2 balloons
[12:36] <rjharrison> 650 and 075
[12:36] <number10> excellent - where from?
[12:36] <fsphil> cool!
[12:36] <rjharrison> ears
[12:36] <fsphil> gives me a good reason to build my preamp
[12:36] <fsphil> I've been putting it off cause it's fiddly :)
[12:37] <GW8RAK> Could be a busy weekend
[12:37] <rjharrison> Yep and they will have good antennas too
[12:37] <fsphil> ah yes, nigey's up too
[12:38] <rjharrison> http://habhub.org/predict/#!/uuid=d6d3252ee26328bb9ae6d1bbb1294477a660766a
[12:38] <rjharrison> pred is crap atm though
[12:39] <rjharrison> way too early though
[12:39] <number10> I am new to thi - just received second hand AR8000 need to work out how to drive the thing
[12:40] <fsphil> ah right, you should get an excellent signal from these flights number10
[12:41] <number10> great
[12:41] <GW8RAK> Where are you number10?
[12:41] <fsphil> going for the record again rjharrison?
[12:41] <rjharrison> lol I think I'll let some others bask in the glory for a while
[12:41] <fsphil> I wonder if there's some way for me to put up a temporary yagi
[12:41] <GW8RAK> Saturday launch rjharrison?
[12:41] <fsphil> haha
[12:41] <rjharrison> yep
[12:42] <fsphil> I'd love to have a go but it means landing it too far away
[12:42] <fsphil> or in the water
[12:42] <fsphil> or yorkshire
[12:42] <rjharrison> we'll catch it for you
[12:42] <GW8RAK> Water is the best option
[12:42] <fsphil> lol
[12:42] <number10> near clare in suffolk GW8RAK
[12:42] <GW8RAK> You should be able to hear it on a bit of damp string
[12:42] <fsphil> rjharrison, I was saying to Upu a while back I'd like to try that some day - a flight from here to there again, but with an actual plan :)
[12:43] <number10> thats if i work out how to set up this AOR AR8000 - only just got it
[12:43] <GW8RAK> If all else fails, RTFM
[12:43] <number10> lol
[12:44] <fsphil> eek, the manual
[12:44] <fsphil> I had to read the manual for the VX-7R -- it's seriously complex
[12:44] <GW8RAK> Just found a data cable for my HF rig, so should be back on data modes soon and will be ready for some more advanced balloon flights.
[12:44] <GW8RAK> Saves quite a bit of money.
[12:45] <fsphil> I think I'm going to build my next interface
[12:45] <GW8RAK> This is a radio to Kantronics lead I'd forgotten about.
[12:45] <fsphil> if the hadie surface-mount board works
[12:46] <GW8RAK> Software decoding is okay, but hardware ones are much easier to tune
[12:46] <fsphil> hardware modem?
[12:46] <GW8RAK> TNC etc.
[12:47] <GW8RAK> Can get my Pactor modem working again.
[12:47] <fsphil> I didn't think there'd be much difference
[12:48] <GW8RAK> There shouldn't be, but HF tnc's have, I think, better filtering to reduce noise
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[12:59] <number10> wel managed to get it on LSB 434.074 LSB without the manual (thats a relief) - I have the tuning steps set to 1khz is that low enough
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[13:04] <SpeedEvil> yes
[13:05] <SpeedEvil> you on't care about the absolute frequency
[13:05] <SpeedEvil> yoAs long as the input signal is wel within the audio bandwidth
[13:06] <number10> thaks SpeedEvil
[13:08] <number10> in Cambridge at the mo and hear short occasionall bursts at 434.075 but do not have fldigi set up here.
[13:09] <rjharrison> yep that's a beacon
[13:09] <rjharrison> Just ignore it
[13:09] <number10> cheer
[13:09] <number10> s
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[13:21] <fsphil> number10, you'll hear all sorts of blips and bleeps on 434.075 - it's a license free band so all the little gizmo's use it, like remote car keys or electricity monitors
[13:23] <number10> but you still manage to track OK - presumably you will loose some packets when someone ele tranmitting near by - I suppose this would be a problem if someone was continually tranmitting near by
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[13:24] <rjharrison> number10, in practice this is very rarely an issue
[13:25] <daveake> We have an external temperature monitor, and I know if I've left my payload transmitter on because Mrs Dave complains that she doesn't know what the temperature is outside!
[13:26] <number10> lol
[13:26] <daveake> Like they said, these sensor things should only be transmitting every once in a while.
[13:26] <fsphil> I did notice that my car key won't work when my payload is on
[13:27] <rjharrison> my neighbours can operate their car fobs. Lol
[13:27] <rjharrison> can't even
[13:27] <rjharrison> Esp deactive alarm
[13:27] <fsphil> haha
[13:27] <daveake> I had something similar at a place I work ... I parked right outside the door, and my keyfob remote wouldn't work. When I got inside I could hear the (radio" doorbell running continuously. The door pushbutton was stuck in!
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[13:40] <Zuph> Morning, #highaltitude
[13:40] <fsphil> afternoon Zuph :)
[13:42] <Zuph> How goes?
[13:43] <fsphil> all good here, playing with LEDs. you?
[13:45] <Zuph> Boring dayy job
[13:45] <Zuph> *day
[13:45] <number10> whats the job Zuph?
[13:45] <fsphil> ah
[13:45] <fsphil> normally doing the same but this is our summer holiday
[13:46] <Zuph> Software Engineer for a large multinational company that happens to own several smaller companies working in the area of fire safety.
[13:47] <Zuph> Summer Holiday? Bah.
[13:48] <fsphil> yea.. summar holiday and I'm at home making an led blink :p
[13:48] <number10> embedded stuff?
[13:48] <Zuph> Our office runs the gamut from embedded to desktop workstation software. I'm primarily doing embedded.
[13:49] <Zuph> Which is a mess. WinCE on everything :(
[13:49] <daveake> fsphil: Every project needs a flashing LED. Especially a blue one :-)
[13:49] <fsphil> ooh definitely
[13:49] <Zuph> fsphil: Too hot here to do anything else, Heat index last week was regularly above 43c.
[13:50] <number10> you need to PWM your LEDs --- live a little dangerously
[13:50] <Zuph> I feel sorry for the guys that took their vacations last week.
[13:50] <fsphil> number10, this is pwm :)
[13:50] <number10> well you have some excitement then ;)
[13:50] <fsphil> A while back I did rtty over an led, but the range was very short
[13:51] <fsphil> I'm trying to extend it
[13:51] <M0JSN> use a laser instead
[13:51] <fsphil> It needs to work from a moving target
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[13:52] <M0JSN> ah
[13:52] <fsphil> got some high powered LEDs, and sensitive receiver and a fresnel lens
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[13:52] <fsphil> figure I can get something working -- though I've lost all my transistors
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[14:15] <NigelMoby> Afternoon
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[14:17] <Laurenceb> http://www.jet.efda.org/
[14:17] <Laurenceb> wut
[14:18] <russss> haha
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[14:20] <daveake> They have the Force
[14:22] <Laurenceb> maybe they could use it for fusing atoms?
[14:23] <fsphil> only the dark side is strong enough for that
[14:23] <Laurenceb> http://maps.google.com/?ll=51.661269,-1.229569&spn=0.000577,0.001206&t=h&z=20
[14:25] <Laurenceb> ^reaction engines sabre engine
[14:25] <Laurenceb> i think... diagonal thingy
[14:26] <NigelMoby> Picochu is poorly
[14:26] Action: NigelMoby cries
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[14:32] <Zuph> NigelMoby: :(
[14:33] <NigelMoby> Hey zuph, my fault for not backing up the libraries I used :/
[14:40] <Zuph> Heh, should use git for code :)
[14:42] <NigelMoby> I did, but never thought to sync the libraries folder lol
[14:44] <Zuph> Then I think that makes you the git.
[14:44] <NigelMoby> More like tit ...
[14:45] <Zuph> I'm not so good at the britishisms.
[14:45] <NigelMoby> Hehe
[14:45] <NigelMoby> If I can find the right 1wire lib it should be ok
[14:45] <NigelMoby> Gps is running fine
[14:48] <Zuph> Here's a question for #highaltitude: Is there a good balloon GPS with a reasonable binary output format that doesn't just spam output? (Works in request -> transmit fashion)
[14:48] <Zuph> Ublox will do it, I think, but their binary format looks hairy and they're expensive.
[14:50] <NigelMoby> Lassen has binary output I think?
[14:51] <Zuph> Yeah, but it just spams the SPI/Serial port, you can't simply ask for GPS data when you want it.
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[15:01] <NigelMoby> Ahh..hmm...dunno then.
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[15:02] <fsphil> why have to be binary?
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[15:08] <Zuph> fsphil: Because I hate parsing strings.
[15:10] <ruku> Actually, that brings up a question.
[15:10] <ruku> So say I'm trying to frame packets of sorts
[15:11] <ruku> ...does that pretty much limit me to text only?
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[15:11] <ruku> say I use SOH (0x01) to indicate the start of a packet
[15:12] <ruku> barf my data out, and then use EOT (0x04)
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[15:12] <ruku> I can't use raw binary in my data, because it could have an 0x01 or 0x04 in it... ...right?
[15:15] <fsphil> you mean transmitting over the air?
[15:19] <Randomskk> ruku: that's what a length field is for
[15:20] <Randomskk> you'd transmit SOF, LEN, ...DATA..., SUM, EOF or something
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[15:22] <fsphil> length, or keep the packets fixed length
[15:22] <Randomskk> indeed
[15:23] <Randomskk> which is just an implicit length :P
[15:23] <fsphil> or escape the bytes, like jpeg does
[15:23] <Randomskk> ew, really?
[15:23] <fsphil> yea
[15:23] <Laurenceb> there ubx code on the wiki
[15:23] <Laurenceb> *there is
[15:23] <Randomskk> escaping in a binary protocol sounds not fun
[15:23] <fsphil> 0xFF bytes in the data stream are preceded by an 0x00
[15:23] <Randomskk> oh well, I guess it's not really any different to escaping text
[15:23] <Randomskk> and are 0x00s preceeded by 0x00 too?
[15:24] <fsphil> nope
[15:24] <Laurenceb> http://ukhas.org.uk/general:code#avr
[15:24] <fsphil> the sequence "0x00 0xFF" is seen as just 0xFF
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[15:24] <Randomskk> :| what if you need to transmit a 0x00 and then transmit the 0xFF?
[15:24] <Randomskk> or does that just Not Happen :P
[15:25] <fsphil> you'd transmit "0x00 0x00 0xFF"
[15:25] <fsphil> yea it's stupid :)
[15:25] <Randomskk> I mean, presumably 0xFF is reserved for EOF or something?
[15:25] <Randomskk> but what if your final byte was 0x00, then you wanted EOF?
[15:26] <fsphil> it breaks out of the datastream, for things like reset markers
[15:26] <fsphil> they always start with an 0xFF
[15:26] <Randomskk> so yea, what if you need to send 0x00 and then break out of the datastream?
[15:26] <fsphil> just wondering about that myself
[15:26] <Randomskk> sounds like an interesting design choice to not escape the escape char
[15:26] <fsphil> they call it byte stuffing
[15:27] <Randomskk> I see
[15:27] <ruku> Laurenceb, thats a slick link.
[15:27] <ruku> Randomskk, Herp derp. I should have thought of that.
[15:27] <fsphil> ah sorry I described it wrong
[15:28] <fsphil> any 0xFF that isn't breaking out of the datastream is followed by an 0x00
[15:28] <Randomskk> aah
[15:28] <ruku> ye gods
[15:28] <ruku> that nema interrupt parser is ridiculous
[15:29] <Laurenceb> ruku: im kind of crazy like that XD
[15:29] Action: ruku reads it...
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[15:29] <ruku> actually, its not as bad as I thought it was
[15:29] <fsphil> "Within the entropy-coded data, after any 0xFF byte, a 0x00 byte is inserted by the encoder before the next byte, so that there does not appear to be a marker where none is intended, preventing framing errors. Decoders must skip this 0x00 byte. This technique, called byte stuffing (see JPEG specification section F.1.2.3), is only applied to the entropy-coded data, not to marker payload data."
[15:29] <ruku> putting all those variables static just reserves them for the ISR?
[15:29] <fsphil> I removed the byte stuffing in ssdv
[15:30] <fsphil> saves a fair bit of space
[15:30] <Laurenceb> ruku: yes
[15:30] <ruku> yahhhh
[15:30] <ruku> (float)atoi(buffer)
[15:30] <ruku> ahhhh
[15:31] <ruku> minutes * (float)atoi(buffer) ;~:
[15:31] <ruku> Why not just make those global variables
[15:31] <ruku> or better yet, have the ISR return a struct?
[15:31] Action: ruku waits for Laurenceb to have an annyeurism.
[15:31] <Laurenceb> extern gps_type Gps;
[15:32] <Laurenceb> it is global
[15:32] <NigeyS> has anyone got the ver of onewire that works with the DS18B20 sensors ?
[15:32] <ruku> well. what I mean is...
[15:32] <ruku> why not have a flag in the struct that's like
[15:33] <ruku> "data not yet converted from strings to floats"
[15:33] <rjharrison> Laurenceb, nice page and code
[15:33] <Laurenceb> hmm i guess
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[15:34] <fsphil> I used the interrupt to read in the gpgga lines (and test checksum) -- all the parsing is done outside the interrupt
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[15:36] <rjharrison> me too fsphil
[15:36] <rjharrison> Though Laurenceb looks quite clean
[15:36] <fsphil> it does
[15:37] <rjharrison> Unlike mine http://www.robertharrison.org/svn/filedetails.php?repname=the-icarus-project&path=%2FIcarus+III%2Favr%2Ficarus%2Fgps.c
[15:38] <ruku> Laurenceb, thats actually pretty elegant.
[15:38] <ruku> Though I would leave the data as strings, and let the user handle it if they want... but perhaps thats not called for in your app
[15:39] <fsphil> not too bad rjharrison, mine is just as long
[15:40] <fsphil> https://github.com/fsphil/hadie/blob/master/gps.c
[15:40] <fsphil> some ublox binary stuff in there too
[15:41] <rjharrison> I could clean it up a bit. Looking at it now. But it works :-)
[15:42] <ruku> fsphil, now when you declare your isr vars...
[15:42] <ruku> static uint8_t rx_len = 0;
[15:43] <ruku> they're only 0 for initilization, correct?
[15:43] <fsphil> yes
[15:43] <ruku> and if it gets set in the ISR, it stays like that the next time the ISR runs?
[15:43] <fsphil> exactly
[15:43] <rjharrison> out of interest sould we really be using uint8_t and friends rather than char and int.
[15:43] <ruku> so its like a global... except only for the ISR
[15:44] <fsphil> basically, a local global :)
[15:44] <rjharrison> Obv. uint8_t leaves no doubt
[15:44] <ruku> I like uint8_t... it's very explicit
[15:44] <fsphil> I'm a big fan of stdint.h
[15:44] <ruku> unsigned integer, 8 bits.
[15:44] <fsphil> been bitten by a few signed bugs before
[15:44] <ruku> how many bytes is an int in your code?
[15:44] <rjharrison> 8
[15:45] <rjharrison> oh 16
[15:45] <ruku> depends on what's defined in your header files.
[15:45] <rjharrison> char = 8
[15:45] <fsphil> uint8_t is a single byte, or unsigned char
[15:45] <rjharrison> int =16
[15:45] <rjharrison> long 32
[15:45] <ruku> though I still use char for character data...
[15:45] <ruku> unless you're on linux, which int is a 32 bit (I think...)
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[15:46] <rjharrison> yep
[15:46] <fsphil> 64-bit on a 64-bit kernel
[15:46] <ruku> rjharrison, and now you know why I like uint8_t =3
[15:47] <ruku> Laurenceb, how did you figure it'd run in 10 us max?
[15:48] <ruku> Is there a worst-case time analysis program or something?
[15:48] <Laurenceb> i used a counter
[15:48] <Laurenceb> and timed the isr
[15:48] <ruku> And took the max value of the counter?
[15:49] <Laurenceb> yes
[15:49] <fsphil> sorry I tell a lie, even with a 64-bit system the int is 32-bits
[15:50] <ruku> ...is that valid code?
[15:50] <ruku> buffer=="GPGGA "?
[15:50] <ruku> I thought you'd want to do a strncmp?
[15:50] <Laurenceb> hmmm
[15:50] <Laurenceb> tbh im not sure if the nmea code was ever finished
[15:50] <ruku> haha
[15:50] <Laurenceb> i think you can do that with c strings
[15:50] <fsphil> haha, well spotted
[15:51] <fsphil> that won't work
[15:51] <Laurenceb> ok
[15:51] <ruku> I'm pretty sure that'll just compare mem locations
[15:51] <ruku> still its very pretty code
[15:51] <Laurenceb> yeah ive only used the ubx and tsip code
[15:51] <Laurenceb> on an actual flight
[15:51] <rjharrison> fsphil, Yep I like explicit. I did think a few weeks back about doing a quick search and destry on my code to make it so.
[15:51] <Laurenceb> bbl
[15:52] <ruku> Though, if you wanted to be really sneaky and save... six bytes of ram...
[15:52] <fsphil> on an avr, every byte counts :)
[15:52] <ruku> you could only check for "GGA" and "RMC"
[15:52] <ruku> since "GPxxx_" is the same across the board
[15:54] <fsphil> you could use strncmp_P() on the avr, keep the GPGGA string inside the program space
[15:55] <ruku> yeah, but that drags out the length of your interrupt
[15:55] <SpeedEvil> Was the launch this morning real?
[15:55] <fsphil> me testing SpeedEvil
[15:55] <SpeedEvil> ah
[15:55] <ruku> if you ask me I'd move the flops and mults out of the code too...
[15:55] <ruku> especially the flop mul x___x!!
[15:56] <ruku> now maybe if we were using the new fram or... whatever it is, I wouldn't mind as much >:D
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[17:30] <mattltm> Hi all :)
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[17:49] <jkominar> hey #highaltitude - does anyone know what the current altitude record for a balloon launch is? That question came up at our launch this weekend and I wasn't sure where to find the answer.
[17:50] <Randomskk> UK, ~36.2km
[17:51] <Randomskk> globally, 41.1km
[17:51] <Upu> http://ukhas.org.uk/general:uk_records
[17:51] <jkominar> cool .. thanks!
[17:52] <natrium42> jkominar: http://www.arhab.org
[17:53] <natrium42> under Records
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[17:58] <natrium42> jkominar: you should contact arhab before launch by the way
[17:58] <natrium42> then they can add you to the list of launches
[17:59] <natrium42> http://www.arhab.org/ARHABlaunchannouncements.html
[18:02] <NigeyS> Upu
[18:06] <Upu> hey NigeyS
[18:06] <NigeyS> hey dude
[18:12] <Upu> oh pm :)
[18:17] jcoxon (~jcoxon@cpc1-lanc4-0-0-cust720.3-3.cable.virginmedia.com) joined #highaltitude.
[18:17] <RocketBoy> hey - jcoxon
[18:18] <jcoxon> evening
[18:18] <NigeyS> james :)
[18:20] <W0OTM> Hello all
[18:21] Dan-K2VOL1 (~Adium@74-143-44-42.static.insightbb.com) joined #highaltitude.
[18:26] <NigeyS> hey W0OTM , Dan-K2VOL1
[18:26] <Dan-K2VOL1> hey NigeyS
[18:27] <Dan-K2VOL1> the balloon is flying on ustream!
[18:27] <Dan-K2VOL1> http://ustre.am/oIad
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[18:30] <NigeyS> oo sweet!
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[18:36] <kd0mto> DePauw university is launching? Eww!!!!
[18:36] <kd0mto> They are the reason why Strato-star exists.
[18:36] <Dan-K2VOL1> they're the same guys aren't they?
[18:36] <kd0mto> Pretty much.
[18:37] <Dan-K2VOL1> so has anyone figured out what all the balloons out of Rhineland Germany are?
[18:37] <Dan-K2VOL1> on the @flightdata99 auto balloon tracker?
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[18:55] <Lunar_Lander> hello people
[18:55] <Lunar_Lander> how are you_
[18:55] <Dan-K2VOL1> hi kevin
[18:55] <Lunar_Lander> how are you?
[18:55] <Dan-K2VOL1> the balloon is flying indoors on ustream - http://ustre.am/oIad
[18:55] <Dan-K2VOL1> doing well
[18:55] <Lunar_Lander> I now have the probably safest computer environment
[18:55] <Dan-K2VOL1> slowly goes from floor to ceiling and back
[18:55] <Lunar_Lander> Knoppix
[18:55] <Lunar_Lander> cool
[18:56] <Dan-K2VOL1> oh? I would think the safest computer environment would be something that's not connected to the internet :-P
[18:56] <Lunar_Lander> xD yeah!
[18:56] <Lunar_Lander> btw my Vista was checked and found to be clean
[18:56] <Lunar_Lander> :)
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[18:57] <Lunar_Lander> btw
[18:57] <Lunar_Lander> what is that spinning cube in Knoppix about?
[18:58] <Lunar_Lander> ah
[18:58] <Lunar_Lander> when I go with the mouse to the extreme side edge and use the wheel, it spins
[18:58] <Dan-K2VOL1> idk
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[18:59] <Lunar_Lander> and the window closure effects are awesome xD!
[18:59] <Lunar_Lander> the windows look like they are burned up or split into many sqares
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[19:01] <W0OTM> aprs.fi down?
[19:05] <jonsowman> http://www.downforeveryone.com/aprs.fi
[19:05] <Dan-K2VOL1> hehe jonsowman, a handy tool that I always forget about
[19:07] <Laurenceb_> hi
[19:08] <fsphil-laptop> Dan-K2VOL1, what was that noise in the stream? stopped now
[19:08] <Dan-K2VOL1> was it a bang&..bang&.. bang&.. noise?
[19:08] <Dan-K2VOL1> I'm not watching
[19:08] <Dan-K2VOL1> hey laurenceb
[19:09] <fsphil-laptop> ah it is still there, I'd the volume down
[19:09] <fsphil-laptop> sounds like it's in a train :)
[19:09] <Dan-K2VOL1> haha there's a giant fan next to the iphone to provide turbulence to the balloon
[19:10] <fsphil-laptop> ah - that's it
[19:10] <Dan-K2VOL1> that was where the power strip was :-P
[19:10] <fsphil-laptop> it's kinda stopped :)
[19:10] <Dan-K2VOL1> also if it sounds like traffic on a road there's open windows to a large city street
[19:12] <fsphil-laptop> where abouts is it?
[19:12] <Lunar_Lander> hi fsphil-laptop
[19:12] <fsphil-laptop> hiya Lunar_Lander
[19:12] <Zuph> fsphil-laptop: It's in the front room at LVL1, Louisville KY
[19:12] <Lunar_Lander> btw Dan-K2VOL1
[19:13] <Lunar_Lander> I still have a PC in the cellar
[19:13] <Lunar_Lander> AMD 266, 4 GB HDD
[19:13] <Lunar_Lander> got XP installed on that one because it had 256 MB RAM
[19:13] <Dan-K2VOL1> thanks zuph
[19:13] <Lunar_Lander> *it had Win 98 installed when I got it
[19:13] <Lunar_Lander> and no internet, just a Modem
[19:13] <Dan-K2VOL1> ugh kevin that's torture
[19:13] <Lunar_Lander> I would only need to install RAM and it would fly again
[19:13] <Lunar_Lander> xD
[19:14] <Lunar_Lander> XP ran quite OK on it
[19:14] <fsphil-laptop> Broadway street?
[19:14] <Dan-K2VOL1> yes fsphil-laptop, where the lights are bright
[19:15] <fsphil-laptop> aah "Chicken King" just up the road to the west
[19:15] <Lunar_Lander> xD
[19:15] <Lunar_Lander> bt
[19:15] <Lunar_Lander> Btw
[19:15] <Lunar_Lander> old news
[19:15] <Lunar_Lander> but Mrs. Winehouse deceased
[19:15] <fsphil-laptop> The earth is round?
[19:17] <jonsowman> Miss Winehouse
[19:17] <jonsowman> her mother is still alive afaik
[19:17] <Zuph> fsphil-laptop: Yes indeed.
[19:20] <Lunar_Lander> yes
[19:20] <Dan-K2VOL1> hahaha chicken king indeed, that place has bullet-proof glass at the cash register
[19:22] <Zuph> And delicious chicken
[19:23] <Dan-K2VOL1> hmm Zuph, too bad we didn't have that banner printed on tissue paper, we could hang it off the side of the balloon
[19:23] <fsphil-laptop> to keep bullets out, or the chickens in?
[19:24] <Dan-K2VOL1> haha
[19:25] <Zuph> Dan-K2VOL1: Banner still looks damn good. Might be worth it to spend $30 on pvc to build a stand, though.
[19:25] <Dan-K2VOL1> hmm I think we're going to end up doing that or building stilts for the table
[19:26] <Dan-K2VOL1> or we could hang it from the ropes at the ceiling :-P
[19:27] <Zuph> heh, that would also be fine.
[19:28] <Zuph> I'll try to stop by the space tonight, but no promises. I'll be online, though, and working on flyers/FAQs if not. I'd like to do a profile on each major component.
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[19:30] <Dan-K2VOL1> cool, we need to have a little review of the ballast algorithm performance and see what we should do for tweaking, as there's several ways we could go about it, and all of them are tedious to try and retry quickly
[19:31] <Zuph> Try ramping up the babysit times?
[19:31] <Dan-K2VOL1> yeah, one of the things we've considered
[19:32] <Zuph> That'll should be the prime suspect, initially.
[19:32] <Zuph> *that
[19:32] <Dan-K2VOL1> interestingly it seems to not be so bad today
[19:33] <Dan-K2VOL1> though I suppose when it gets moving faster like we want, it will be
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[19:33] <Dan-K2VOL1> I may need to put the GSP board up there with an XBee to troubleshoot the intermittent idle ballast
[19:33] <Dan-K2VOL1> wires are too disruptive of the equilibrium
[19:34] <Zuph> ah ha
[19:35] <Zuph> Well, if you do that, it would let Jon put his dashboard together.
[19:35] <Dan-K2VOL1> it would indeed. I do not relish trying to re-setup the xBees for a new baud rate though
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[19:35] <Zuph> I can write some *really* dirty code that just prefixes any line designed for dashboarding with some particular set of characters "%%Key: Value%%\n" or something.
[19:36] <Zuph> What baud are there set for now?
[19:36] <Dan-K2VOL1> heck the current output might be parseable
[19:36] <Dan-K2VOL1> 38400 I think
[19:36] <Zuph> orly
[19:36] <Dan-K2VOL1> the xbee is set to 4800
[19:36] <Zuph> ah
[19:37] <Zuph> That's what I was wondering.
[19:37] <Zuph> I do not advice baud rate that slow for gsp board.
[19:37] <Zuph> *advise
[19:37] <Dan-K2VOL1> yeah that makes sense
[19:37] <Dan-K2VOL1> it's got a lot to say
[19:39] <Zuph> So, I'm working off and on on a new flight computer.
[19:39] <Zuph> It'll be so nice to have a processor fast enough to handle all components and not worry about synchronization issues.
[19:39] <Dan-K2VOL1> hell yes
[19:39] <Zuph> And have wireless output and bootloading.
[19:39] <Dan-K2VOL1> I liked your idea of using a standard RTOS or similar
[19:40] <Zuph> I'm really liking ChibiOS
[19:41] <Zuph> Best thing: We can write *our* drivers to be generic to the ChibiOS HAL, so if we need to dramatically change hardware for some reason, it's no issue.
[19:41] <Dan-K2VOL1> oh really, that is nice
[19:41] <Dan-K2VOL1> anyone else here using any kind of RTOS balloon computers?
[19:41] <Laurenceb_> atm im using bare metal stm32
[19:42] <Laurenceb_> less overhead, but chibi looks really nice
[19:42] <Zuph> Dan-K2VOL1: I know Ed uses FreeRTOS.
[19:42] <Zuph> He has complained about it.
[19:42] <Zuph> Also: Native SD. No more futzing around with that damn openLog
[19:43] <Zuph> Also, I'll be using a binary data format GPS. Minimal serial parsing at all.
[19:43] <Zuph> That's probably 80% of what the current flight comptuer is doing, serial parsing.
[19:45] <Dan-K2VOL1> nice
[19:45] <Dan-K2VOL1> ah yes
[19:46] <Zuph> Also, design with development in mind :-p
[19:47] <Laurenceb_> native sd in chibi ?!
[19:47] <Laurenceb_> any idea on flash use?
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[20:09] <Lunar_Lander> hi m1x10_happiest
[20:10] <Zuph> Laurenceb_: Native SD for STM32 platforms.
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[20:12] <Zuph> Laurenceb_: Kernel size is anywhere from 1.2 to 5.5 KiB depending on what you activate.
[20:14] <m1x10_happiest> Lunar_Lander!
[20:14] Nick change: m1x10_happiest -> m1x10
[20:14] <m1x10> I got your package ready
[20:15] <m1x10> 3 e-tested boards + 2 others from previous versions
[20:16] <Lunar_Lander> cool!
[20:16] <Lunar_Lander> one moment please
[20:16] <m1x10> i just dont know how much is to send
[20:16] <m1x10> and i dont have money right now
[20:17] <m1x10> neither 5e :(
[20:17] <Lunar_Lander> np
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[20:23] <m1x10> I built the first board
[20:23] <m1x10> and everything works nice
[20:23] <Lunar_Lander> cool!
[20:23] <m1x10> the 10mw radio is still too powerful
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[20:29] <Lunar_Lander> why is it too powerful?
[20:29] <W0OTM> Hello All
[20:30] <Lunar_Lander> hello W0OTM
[20:31] <m1x10> i dont know
[20:31] <m1x10> 10mw from my room reach 60-70km distant stations
[20:31] <Lunar_Lander> cool!
[20:32] <fsphil-laptop> you sure it isn't being repeated?
[20:32] <fsphil-laptop> by a nearby station?
[20:33] <m1x10> let me show you maybe you understand better
[20:33] <Lunar_Lander> ok
[20:34] <m1x10> 2011-07-25 19:55:44 UTC: SW2HYX-11>APZIKA,WIDE2-1,qAR,SZ7SER
[20:34] <NigeyS> anyone know how to calculate the checksum of 4800? :|
[20:34] <Dan-K2VOL> for GPS Nigeys?
[20:35] <m1x10> fsphil: http://aprs.fi/?c=raw&call=SW2HYX-11&limit=5&view=normal
[20:35] <NigeyS> yups, it says chk1 and chk2 are the checksum of the data between Preamble and ‘*’.
[20:36] <NigeyS> $PMTK251,4800
[20:36] <NigeyS> being the line i need a checksum for
[20:36] <jcoxon> http://www.hhhh.org/wiml/proj/nmeaxor.html
[20:37] <NigeyS> oo tnx james
[20:37] <fsphil-laptop> m1x10, the station hearing you is about 6km away
[20:38] <NigeyS> dam didnt work, maybe this gps wont do 4800
[20:38] <jcoxon> it should do
[20:38] <rjharrison> test
[20:38] <jcoxon> you sure thats the correct string?
[20:38] <NigeyS> works now i added an extra $ by mistake
[20:38] <m1x10> fsphil: yes one of them
[20:38] <Dan-K2VOL> good to hear
[20:38] <NigeyS> was *14
[20:39] <m1x10> there is the other one which is 60km
[20:39] <NigeyS> jcoxon, picochu is refusing to work, im gonna retrofit the main ats-1 computer for the pico flight
[20:39] <Darkside> or we'll use a mininut board :P
[20:40] <jcoxon> NigeyS, surely it can't have got that bad
[20:40] <jcoxon> don't do anymore tonight
[20:40] <jcoxon> sleep on it
[20:40] <jcoxon> it'll come to you
[20:40] <NigeyS> jcoxon, i get no data, no temp data, no gps, even after changing the sensors
[20:41] <rjharrison> jcoxon pred l;ooks bad atm re w/e
[20:41] <jcoxon> for some reason google.co.uk keeps opening windows saying Logging - anyone else getting this?
[20:41] <rjharrison> s/;//
[20:41] <jcoxon> rjharrison, eek
[20:41] <rjharrison> no
[20:41] <jcoxon> NigeyS, thats very strange
[20:42] <jcoxon> not getting anything at all? is the micro responding?
[20:43] <NigeyS> nope, micro is working, as is gps seperately, every ver of onewire lib wont read the bus, and even after removing the code for the temp sensor it still wont send gps data through
[20:43] <jcoxon> hmmm sounds like a main code issue
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[20:44] <NigeyS> yup its definately code, i just cant track it down
[20:44] <jcoxon> github?
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[20:44] <NigeyS> even removed custom tinygps and tried default, still no gps data
[20:44] <jcoxon> pastebin the code
[20:45] <NigeyS> http://pastebin.com/zztWFvz8
[20:45] <NigeyS> gps on its own running fine btw
[20:48] <Darkside> bahahah top gear is awesome
[20:48] <NigeyS> lol yush!
[20:48] <Darkside> i love the mine remover
[20:49] <Laurenceb_> is it on now or iplayer?
[20:49] <Darkside> iplayer
[20:50] <Darkside> love the ending
[20:50] <Darkside> :D
[20:50] <Darkside> 'well, they were warned'
[20:53] <rjharrison> :q
[21:00] <Lunar_Lander> m1x10: but long range should be good?
[21:00] <Lunar_Lander> hi rjharrison
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[21:28] <Upu> evening
[21:28] <Upu> damn yeah not watchd top gear yet
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[21:34] <Laurenceb_> http://www.hardstaffgroup.co.uk/site/hardstaff-dual-fuel-technologies
[21:35] <Laurenceb_> grrrr that was my idea :(
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[21:35] <Laurenceb_> maybe i should get a life and start a business :/
[21:38] <NigeyS> lol did u patent it? :p
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[22:19] <Laurenceb_> i dont believe in patents
[22:22] <SpeedEvil> IPatents can be a goo.
[22:22] <SpeedEvil> If an only if the tests are sufficiently high.
[22:22] <SpeedEvil> good
[22:23] <SpeedEvil> At the moment - well - they're not.
[22:24] <SpeedEvil> You should not be able to get a patent on a technique which any competent engineer, now or in the future facing the same problem will be able to replicate in the first half an hour.
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[00:00] --- Tue Jul 26 2011