highaltitude.log.20140604

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[02:28] <KF7FER> So it's real quiet but... I've been working on a Si4464 based transmitter and I was hoping to post my progress on here for some feedback.
[02:29] <KF7FER> Anyways this is based on the work of KT5TK
[02:29] <KF7FER> https://dl.dropboxusercontent.com/u/8240668/Review/unRadio_sch.png
[02:29] <KF7FER> https://dl.dropboxusercontent.com/u/8240668/Review/unRadio_brd.png
[02:29] <KF7FER> and the actual files are https://dl.dropboxusercontent.com/u/8240668/Review/unRadioEagle.zip
[02:30] <KF7FER> Still a work in progress but I was wondering if I'm going in the right direction
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[02:41] <malclocke> KF7FER, Europe is asleep right now, so I don't know if you'll get much feedback atm
[02:42] <KF7FER> guess I could have planned that better, eh? Oh well. Worst case I'll try again later. Thanks for letting me know
[02:42] <malclocke> I'm interested as I want to get something working with Si4464 too, but I'm not qualified to comment I'm afraid.
[02:43] <malclocke> what's 'Audio' ?
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[03:02] <KF7FER> oops... sorry. am sitting here trying to finish routing.
[03:02] <kc2pit> Huh, I was just looking a bit at KT5TK's design earlier today. Can't offer much feedback, though.
[03:04] <kc2pit> If I've understood the concept right, it's basically using the 4464 like a CW transmitter whose frequency can be modulated by FMing its clock input.
[03:05] <KF7FER> So malclocke... that feeds into one of the digital pins on the 328
[03:05] <KF7FER> kc2pit... could be. I'm still trying to get my head around this
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[03:13] <KF7FER> FWIW I updated the files to the latest for now
[03:17] <kc2pit> Yeah, it looks like that "audio" signal is connected to one of the 328's PWMable pins, through a lowpass filter (about 5 kHz cutoff), and into the VCO's input. That output is fed into the 4464's clock input, so the "audio" signal will change the 4464's transmitted carrier frequency. Haven't looked through the code enough to understand why that's better than using the 4464's own modulator.
[03:19] <aadamson> there isn't a modulator in the Si chips
[03:20] <aadamson> they are only made for digital internally via their modem
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[03:20] <aadamson> so you put them in CW mode and you modulate their input
[03:20] <aadamson> with a VCXO and PWM from a processor
[03:21] <aadamson> it can also be done with a TCXO, but that's a bit harder as you have to modulate the input to the Si and you can't pull a TCXO as far as you can a VCXO, but some do it that way
[03:22] <kc2pit> The "mo-" half of "modem" is what I was talking about. I'm wondering what one does with that VCO that the internal modem can't do.
[03:22] <aadamson> if you are doing APRS, it's far easier to do it with a DDS on the PWM and then feed that to a VCXO
[03:22] <aadamson> how are you going to module the the internal mo?
[03:23] <aadamson> modulate
[03:23] <kc2pit> Wait, are you talking about bashing that poor thing into transmitting AFSK?
[03:23] <aadamson> sure it works just fine
[03:24] <kc2pit> Okay, I understand now. I'm a little sad, but I understand.
[03:24] <aadamson> http://peachflight.blogspot.com/
[03:24] <aadamson> just threw that together today for another effort, but the first post has specific
[03:25] <aadamson> I use an STM32 and set a timer up to do DDS, outputing it on a pin as PWM, that does the VCXO (in my case a digial PLL) which is capacitively connected to the Si4463
[03:25] <aadamson> set the mode to CW on the Si so you don't get the modem
[03:26] <aadamson> and let the pwm vary the frequency to create FM
[03:26] <aadamson> kt5tk's code does exactly the same thing
[03:27] <aadamson> I just flew a small foil balloon from Atlanta up to the Indy area on 10mW, solar, lipo and aprs afsk on that board
[03:28] <aadamson> one of the other guys here does it on a TI processor similarly, but uses a TCXO
[03:28] <aadamson> using the CW mode, you can also do SSB modes like domino, rtty, mfsk, etc
[03:28] <aadamson> about the only thing you are limited by, well 2 things
[03:29] <aadamson> a) the frequency you select to externally modulate the Si part will ultimately determine the smallest frequency change you can make and b) whatever output match filter will limited the frequency range you can be agile over
[03:30] <aadamson> whatever output match and low pass filter ...
[03:41] <aadamson> Ok these are cool - http://www.advancedevices.com/Smart_Tweezers_LCR_Meter.htm
[03:42] <arko> they dont work very well from experience
[03:42] <arko> maybe i had bad ones, but if you are just sorting through things checking values for a ballpark its fine
[03:42] <aadamson> ah, I knew someone would have tried them :)... tell dongs that on stm32 before he buys one :)
[03:43] <arko> we ended up getting an HP4274
[03:43] <aadamson> hehe... sounds like sesame street.... small..... large ..... :)
[03:44] <aadamson> arko, you in the bay area or southern Ca?
[03:44] <aadamson> I lived in Almaden in San Jose and came for GA from Santa Monica :)
[03:44] <aadamson> came to GA...
[03:45] <arko> oh
[03:45] <arko> los angeles
[03:45] <aadamson> ah very good
[03:46] <aadamson> yeah I was there through riots, fires, floods, earthquakes... then said... ok, that's enough and left
[03:46] <arko> but yeah, we got that lcr because we needed something very accurate, calibrated, etc
[03:46] <arko> blah, its not bad here
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[03:47] <arko> people, including myself, blow how bad it is here out of proportion
[03:47] <aadamson> yeah, my fav was living in San Diego... LaJolla
[03:47] <aadamson> did that for 2 years
[03:47] <arko> LA is an awesome place to live imo
[03:47] <aadamson> then moved to santa monica
[03:47] <arko> San Diego is nice
[03:47] <arko> oh god, the 405
[03:47] <arko> i just avoid crossing it
[03:47] <arko> too much traffic
[03:47] <aadamson> yeah indeed is sucks
[03:48] <aadamson> I worked for peter norton when it was called that and they for symantec until I left in 96
[03:48] <arko> ah
[03:48] <arko> that spyware company
[03:49] <aadamson> hehe... ya, used to be the utility company
[03:49] <aadamson> the peter norton group of symantec.
[03:50] <aadamson> Ca was fun, met my wife there... then we moved to GA... and with that I'm off to bed... take care, enjoy the sun
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[07:24] <LeoBodnar> "Doing a superpressure launch with a 36" Foil Qualatex balloon and a pico payload, you really need to try to shoot for the launch at dusk or dark to allow the balloon to get to altitude without the daytime heating..."
[07:24] <LeoBodnar> Bollox
[07:24] <LeoBodnar> "As noted it's a 36 inch Qualatex Foil balloon, weight should be approx 30-35 grams."
[07:25] <LeoBodnar> It's 37 grams
[07:26] <LeoBodnar> Maybe you should check before teaching others to suck eggs
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[07:48] <jededu> Any tips for launchinh in the rain?
[07:48] <daveake> Yeah. Ignore it.
[07:49] <daveake> Obviously keep it off the trackers, but the balloon is fine
[07:49] <jededu> Ok thx
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[07:49] <daveake> It's unpleasant but I'd sooner launch in rain than wind
[07:50] <fsphil> don't launch in snow
[07:50] <daveake> Why not? :)
[07:50] <daveake> I have :/
[07:50] <fsphil> me too, more or less
[07:50] <fsphil> it's awful
[07:50] <daveake> Actually I can think of many reasons why not
[07:50] <daveake> Coooold
[07:50] <fsphil> weight of the snow on the payload
[07:50] <fsphil> if the payload is big enough
[07:50] <fsphil> could cause it to drop
[07:50] <jededu> The prediction is good launching at 13:00
[07:51] <daveake> It wasn't actually snowing for me, but snow on the ground
[07:51] <daveake> http://www.daveakerman.com/wp-content/uploads/2013/03/IMG_6597-768x1024.jpg
[07:51] <daveake> and http://www.daveakerman.com/wp-content/uploads/2013/03/2013-02-10-12.46.14-1024x768.jpg
[07:51] <fsphil> snow on the ground is fine
[07:52] <fsphil> and may actually protect the balloon from stones or other sharp objects on the ground
[07:55] <sp2ipt> daveake: what's the hammer for? baloon or gas bottle? ;)
[07:59] <daveake> pass!
[08:02] <LeoBodnar> Stop!
[08:02] <LeoBodnar> Hammer time
[08:02] <fsphil> oh dear
[08:07] <sp2ipt> beware of the white rabbit
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[08:20] <gonzo_> was that the dress flight dave?@:
[08:21] <gonzo_> (that sentence seems to have grown an extra ear? Must be a lab mouse)
[08:30] <daveake> haha yes
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[08:35] <Willi_> Authorization request for flight document HAB_PILATI bc3f24498bdddffc727a978758152661
[08:35] <amell> ping Upu
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[09:44] <SpeedEvil> Is this a +90dB antenna? http://imgur.com/r/WTF/JiQrDed
[09:45] <mikestir-work> no it's a hedgehog
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[09:46] <fsphil> looks like a HAM version of the Iron Throne
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[09:53] <mfa298> looks like a detuning / radiation pattern nightmare.
[09:53] <Darkside> that would be somone going to daytone i bet
[09:53] <Darkside> dayton*
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[10:04] <Maxell> SpeedEvil: haha
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[10:12] <gonzo_> prob is, in that proximity, none would work anyway
[10:14] <gonzo_> possibly a mobile hab carcher
[10:14] <gonzo_> to skewer them in the way down?
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[10:17] <fsphil> just for display most likely
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[10:18] <fsphil> or is this how HAB males attract a mate?
[10:18] <fsphil> HAM*
[10:18] <Darkside> that and their massive scrwdriver antennas
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[10:28] <sp2ipt> hmmm... thought it was 'my valve is bigger than yours' but guess I'm wrong ;)
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[10:55] <LeoBodnar> do phased array antennas have "best" spacing between nodes? probably and order of the wl?
[10:56] <mattbrejza> massive mimo stuff tends to have antenna spacings of wavelength/2
[10:56] <mattbrejza> not sure if you can bodge it with any arbitary spacing though if you phase it correctly
[10:57] <adamgreig> in theory yes
[10:57] <adamgreig> so long as you can find the complex manifold of the array
[10:57] <adamgreig> you can compose the feeds to each
[10:57] <LeoBodnar> well it does not have sense to have elements spaced at say lambda/10
[10:57] <adamgreig> but like.. it'd be awful
[10:57] <LeoBodnar> for <10 elements
[10:57] <adamgreig> no indeed, the whole point is to have a larger effective aperture
[10:58] <LeoBodnar> yeah
[10:58] <sp2ipt> LeoBodnar: have a look at antenna book - it has a section on phased vertical arrays
[10:58] <LeoBodnar> so this can be a microwave phased array radar
[10:59] <LeoBodnar> eBay sometimes have decommissioned phased array antennas from airborne weather radars
[11:00] <LeoBodnar> interesting to have a look
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[11:13] <gonzo_> if it's non directional elements/nodes, then you can get broadside or endfire type patterns, depending on spacing
[11:15] <gonzo_> I suspect that with directional antennas (where they are spaced perpendicular to the main lobe) then you would get similar effects, but this would only be affecting the side lobes
[11:15] <gonzo_> too closley spaced and the antennas may interact and upset the primary pattern
[11:17] <aadamson> Thanks for the critique LeoBodnar, I've corrected what I should have said - http://peachflight.blogspot.com/2014/06/and-then-it-happened.html
[11:19] <LeoBodnar> cool
[11:21] <aadamson> so educate me, is just more variables during the day that make it incrementally harder to predict float, or is there a disadvantage of having the first heating cycle also occur as the balloon rises to it's float altitude? or are those 2 things entirely separate issues?
[11:21] <aadamson> ... is it just ...
[11:22] <malgar> hi, is the flight document for HAB PILATI approved?
[11:22] <LeoBodnar> it's just too windy and turbulent
[11:22] <aadamson> duh, expect the hard answer and yet it's the obivous one... ;)
[11:23] <mattbrejza> malgar: if it appears here its approved: http://habitat.habhub.org/ept/
[11:23] <mattbrejza> also in fldigi
[11:23] <LeoBodnar> thermals can suck it in at 3m/s and then drop it down from 1km level to the ground
[11:23] <malgar> perfect: there ara also 2 ATLANTIS flights. Only the last approved is the right one
[11:24] <malgar> is possible to delete the first?
[11:24] <LeoBodnar> great for sailplanes but not for foil balloons
[11:24] <aadamson> is there any advantage to a night launch from the perspective of getting the envelope fully engorged without the thermal heating, such that it has time to *rest* at that gorged size before thermal heating?
[11:25] <mattbrejza> malgar: generally best to ask on #habhub otherwise itll get buried here
[11:25] <malgar> ok
[11:25] <LeoBodnar> not really
[11:26] <aadamson> ok... helps with my understanding...
[11:26] <LeoBodnar> if you have a marginal quality balloon that is destined to burst during the day it gives you at least a few hours of fun
[11:26] <aadamson> so on a sep, but related topic. Any theories on your new custom envelopes and why it seems they have that altitude change after a few days? And curious what you are using to heat seal them?
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[11:27] <aadamson> There is another foil manufacturer that some of the balloon people use - while I was looking for foils, I called around, no-one really wanted to sell me qualatex
[11:27] <LeoBodnar> i don't believe plastics have any memory or state
[11:28] <aadamson> and I forget the other name, not sure if it was some price advantage or if they are better
[11:28] <LeoBodnar> Qualatex goes under a few names
[11:28] <aadamson> yeah I doubt the plastics do, but wondered about the seam/wrinkle benefit
[11:29] <aadamson> I suppose you could prove that theory, take a balloon, fill it full on the ground, let it set a day, lower it's pressure back to launch pressure and launch it and see what happens
[11:29] <LeoBodnar> night float does not take envelope into plastic section of the strain/stress curve so it does not matter
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[11:33] <aadamson> so net net the primary advantage of an late day/evening launch is *calmer air* (assume that dang thunderstorms will stay away :( )
[11:34] <aadamson> and one of these days my fingers will work too.
[11:34] <aadamson> or maybe the it's connection between the brain and figures...
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[11:42] <fsphil> speaking of thunderstorms, we had a small one nearby yesterday that created a tornado
[11:43] <fsphil> http://www.bbc.co.uk/news/uk-northern-ireland-27697436
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[11:53] <DL7AD> www.dl7ad.de/balloons/D-3/
[11:53] <DL7AD> www.dl7ad.de/balloons/D-4/
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[12:13] <Geoff-G8DHE-M> Mumm, no sign of eduhab/bahude on habitat for the habrotate program to use ??
[12:13] <jed_edu> Not good
[12:13] <Geoff-G8DHE-M> Its on the dl-fldigi list from the same source so odd ??
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[12:24] <daveake> Interesting altitude plot for eduhab1
[12:25] <Laurenceb> you could say it was educational
[12:26] <daveake> He I hope
[12:27] <daveake> Especially as it's coming towards me :/
[12:28] <Geoff-G8DHE-M> Ah that's why it hasn't got over the downs for me then :-( Thought I saw it appearing then it dissapeared!
[12:30] <fsphil> underfilled?
[12:31] <mfa298> daveake: can't you see the firey ball heading towards you
[12:32] <daveake> fortunately there's too much rain for that :)
[12:32] <fsphil> do you have internet in the bomb shelter?
[12:33] <mfa298> if the external temp is 47 I dread to think what the internal temp is
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[12:34] <daveake> It's fully equipped ... internet, Pepsi Max, fire extinguisher ...
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[12:34] <daveake> blimey
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[12:35] <daveake> bouncy hab
[12:35] <daveake> Might be able to catch this one
[12:41] <daveake> What freq is it on?
[12:43] <mfa298> you might need to scan around for it.
[12:43] <mfa298> seems to be a lack of posts on the mailinst list
[12:44] <daveake> I can see 2 lines @ 434.525 but not decoding
[12:44] <mfa298> looks like 525 http://imgur.com/k4P5gXm
[12:44] <mfa298> from last nights scrollback
[12:44] <daveake> ok cool just need a bit more signal
[12:45] <daveake> aerial is aimed through stone walls here :(
[12:45] <mfa298> looking at old emails (23/5) BAHUDE might be .570 50bd 7n2
[12:46] <daveake> ta
[12:46] <Upu> try 434.480
[12:47] <mfa298> sounds like you have the slightly older tech version of the issue I get with lots of flights. newer tech issue being re-inforced concrete
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[12:52] <daveake> Yeah when I get my man shed I'll get an aerial put up outside
[12:53] <g8zbj_wayne> 434.524 ish 8n2 470Hz is EDUHAB1
[12:54] <daveake> I have a hill in the way and it's gone below it now
[12:54] <g8zbj_wayne> 434.570 7n2 470Hz BAHUDE
[12:54] <g8zbj_wayne> sorry EDUHAB1 shift is 450Hz
[12:55] <fsphil> looks like it's about to ascend again
[12:55] <fsphil> that is very odd
[12:55] <mfa298> very little free lift and finding some good thermals perhaps
[12:55] <fsphil> up it goes
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[12:56] <mfa298> could make recovery interesting
[12:56] <daveake> I could ask the farmer if he has a gun ...
[12:56] Nick change: nigelvh -> Guest35229
[12:57] <mfa298> I'm wondering if it's got some odd telemetry as well. the alt graph on habmap is interesting for that last decent
[12:57] <fsphil> should be low enough to spot if the weather clears
[12:57] <Upu> nice oscillation
[12:59] <fsphil> I wonder if it's intentional
[12:59] <Upu> doubt it
[13:00] <mfa298> looking at ept we might have a good example of why to use sequence numbers
[13:01] <mfa298> or it could be an issue with time in the code (gps or system time) as it seems to go backwards at times
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[13:04] Action: mfa298 takes back one of those statments. It has a count value just an odd order of fields
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[13:16] <Jess--> eduhab seems odd
[13:16] <mfa298> interesting the last two peaks appear to have been the same alttude and this could be the third trough at the same altitude
[13:17] <Jess--> any more info on eduhab / bahude?
[13:18] <mfa298> one of them is an Raspberry Pi I think the other is a pava as backup but I'm not sure we know much more about them.
[13:19] <Jess--> I was in the footprint for them but couldnt see anything around 434
[13:20] <mfa298> 13:53 < g8zbj_wayne> 434.524 ish 8n2 470Hz is EDUHAB1
[13:20] <mfa298> 13:54 < g8zbj_wayne> 434.570 7n2 470Hz BAHUDE
[13:20] <mfa298> 13:54 < g8zbj_wayne> sorry EDUHAB1 shift is 450Hz
[13:20] <mfa298> that's reported frequency/mode from a while ago
[13:22] <Jess--> i'll keep looking just in case
[13:22] <daveake> OK got it now
[13:22] <mfa298> looks like they're heading back up.
[13:22] <daveake> Would have helped if I'd noticed one is on 7N2 and the other 8N2 :p
[13:22] <mikestir-work> oooh. oscillohab
[13:24] <daveake> eduhab1 is quite a bit stronger than the other
[13:24] <g8zbj_wayne> that caught me out too daveake. I had a huge signal that wouldn't decode
[13:25] <daveake> ditto :/
[13:25] <daveake> then the weaker one was much better ...
[13:25] <amell> eduhab1 ascending?
[13:25] <daveake> yes it is
[13:25] <daveake> no it isn't
[13:25] <mfa298> sometimes
[13:25] <daveake> yes it is
[13:27] <mfa298> now does cutdown:0 imply there's a cutdown on this payload or is that just being hopeful.
[13:27] <mfa298> and if there is a cutdown will it deploy at <3km
[13:27] <daveake> broken through 2000m
[13:27] <mikestir-work> needs more gas and less wifi
[13:28] <daveake> oh the wifi one ...
[13:28] <daveake> Well it'll go up quicker when the insulation melts
[13:29] <mfa298> i missed the wifi bit last night. which is bad as he was answering my question of whether its a model b
[13:29] <daveake> still going up ...
[13:29] <mikestir-work> at this rate I might even get to track it when I get home from work
[13:29] <amell> is this the warren farm primary one?
[13:30] Action: mfa298 wonders if there's any maps showing thermals (and how to overlay with the balloon map)
[13:30] <Jess--> just starting to appear on my waterfall with a lot of averaging
[13:31] <daveake> lowest float ever
[13:31] <mfa298> leveling off. about to go down again ?
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[13:31] <daveake> oh coming down again
[13:31] <jed_edu> Rubbish
[13:32] <daveake> Well if it gets down to 150m I'll catch it :/
[13:32] <jed_edu> Do you hink it leaked
[13:32] <amell> very strange behaviour
[13:33] <jed_edu> It had 1200g neck lift
[13:33] <amell> payload weight?
[13:34] <jed_edu> 600 wet
[13:34] <jed_edu> 600g
[13:34] <jed_edu> it launched ok good asscent
[13:35] <amell> idk. 600g excess lift would have thought plenty.
[13:36] <Upu> that is bizzare
[13:37] <jed_edu> I dont think its coming down in a hurry it could be very wet ?
[13:37] <Upu> could be what balloon is it again ?
[13:37] <amell> how confident are you that the neck lift is correct?
[13:37] <mfa298> doing quick maths I make initial ascent (before the first peak) around 2.4m/s which is float territory
[13:37] <jed_edu> Hwoyee 1200
[13:38] <Upu> float but initially up mfa298
[13:38] <Upu> certainly not enough gas in
[13:38] <Upu> but that oscilation is wierd
[13:38] <Upu> what gas ?
[13:39] <jed_edu> very 875g water + bottle just weighed it and the filler 230
[13:39] <jed_edu> helium
[13:39] <Upu> ok
[13:39] <mfa298> the only thought I've got for that oscilation is that it's gone to neutal bouyancy after the first peak and is finding thermals or similar but that doesn't seem that likely.
[13:40] <daveake> If it was rain I'd not expect such sharp troughs
[13:41] <daveake> It's almost a triangle wave rather than sine
[13:42] <g8zbj_wayne> rainwater in payload box is heated up on rasp pi - flashes off to steam - up it goes :-)
[13:42] <mfa298> based on ext temp ant sort of icing up would seem unlikely (even rain afecting it much could be unlikely)
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[13:44] <mfa298> that neck lift for 600g should be around 4m/s from the calc
[13:44] <Jess--> temp has just dipped, seems to do that just before it starts rising each time
[13:44] <fsphil> higher altitude clouds?
[13:44] <fsphil> passing in and out of the shadow
[13:45] <mfa298> higher trough as well that time
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[13:45] <LeoBodnar> there is potentially an unstable oscillation mode on the edge of buoyancy related to adiabatic expansion/compression
[13:46] <fsphil> I was just about to say that
[13:46] <Upu> there is a significant bank of cloud which stops just over Bristol
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[13:46] <Upu> yeah adiabatic expansion get me every time
[13:46] <LeoBodnar> we have seen it before - http://leobodnar.com/balloons/B-11/2.png (initial ascent)
[13:46] <Upu> I've seen it on mine as well Leo but the general gist was up :)
[13:47] <Upu> this I've not seen
[13:47] <fsphil> no I don't think there has been any like this before
[13:47] <Upu> can we ascertain if there is a cloud layer or something at around 2km ?
[13:47] <fsphil> not a leak or I'd have thought it would get lower each time
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[13:47] <Upu> nope not a leak
[13:48] <Upu> I suspect lack of gas is a root cause
[13:48] <Upu> but something else is going on as well
[13:48] <Upu> if it shoots up just south of Bristol its bouncing off clouds
[13:48] <Upu> what with clouds being solid
[13:50] <Jess--> temp hasnt risen this time
[13:50] <Jess--> now it is
[13:52] Nick change: Guest35229 -> nigelvh
[13:54] <Jess--> watching for the sudden drop in temperature
[13:54] <Upu> thats faster
[13:55] <fsphil> could a low lift balloon get trapped in an inversion layer?
[13:55] <Upu> yep
[13:55] <Upu> pull up Luke pull up
[13:55] <gonzo_> the force is strong in this one
[13:56] <fsphil> this looks terminal
[13:56] <fsphil> not to say it won't take off again
[13:57] <Upu> not if someone gets to it quickly, are you chasing jededu
[13:57] <Jess--> he dropped offline Upu
[13:58] <fsphil> slowing
[13:58] <amell> seems to be moving faster than running pace.
[13:58] <mfa298> going up again
[13:58] <amell> need a fast 4x4 with a long hook...
[13:58] <Upu> jesus
[13:58] <fsphil> and up we go
[13:58] <Upu> I no understand
[13:59] <Upu> even if that lands its likely to go up again unless it gets caught on something
[13:59] <Upu> shame that cut dow isn't remotely commandable
[14:00] <Jess--> theres the temp drop again
[14:00] <Upu> http://x-f.lv/dev/habitat-graphs/payload/EDUHAB1#g/altitude,ext_temp
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[14:01] <Upu> set from to today
[14:01] <Jess--> I'm using the mobile tracker (graphs on all sensors)
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[14:03] <Geoff-G8DHE-M> Weird http://360.g8dhe.net/HAB_Flights/2014_Flights/Eduhab1_20140604/
[14:04] <fsphil> interesting
[14:04] <fsphil> from that it looks like its moving faster near the top
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[14:07] <Geoff-G8DHE-M> Tha data from HABITAT shows it a lot more variable http://360.g8dhe.net/HAB_Flights/2014_Flights/Eduhab1_20140604/index.php?ind=1
[14:07] <jed_edu> Upu how long does the backup last on a lithium
[14:08] <Upu> 45 hours
[14:08] <Upu> ish
[14:08] <mfa298> Geoff-G8DHE-M: you may need to sort the raw data from habitat as it looks like some packets are out of order in the raw list.
[14:08] <Upu> giving the pedestrian/flight mode code a good testing :)
[14:09] <Upu> and slowing
[14:09] <mfa298> higher peak than last time.
[14:10] <Upu> yep
[14:10] <amell> cooling effect of clouds?
[14:10] <amell> its a pretty miserable day today
[14:13] <Geoff-G8DHE-M> There are a couple of records out of sequence that's all.
[14:14] <craag> mfa298: Sort by gps time?
[14:14] <craag> I can patch that quickly into habmap
[14:14] <mfa298> or by count I think.
[14:14] <Jess--> habmap?
[14:15] <Upu> pull the sequence number from the backup tracker ?
[14:15] <mfa298> looking at /ept earlier it just looked like some packets were listed after later ones.
[14:15] <mfa298> Jess--: http://habmap.philcrump.co.uk/
[14:15] <Geoff-G8DHE-M> craag, habrotate is having problems with this flight as well :-)
[14:15] <Upu> my bet is if it clears the cloud and its still sunny jed_edu it will probably go up as expected
[14:16] <Upu> however if the sun goes down its likely to come down and possibly take off again in the morning
[14:16] <craag> Geoff-G8DHE-M: :/
[14:16] <Geoff-G8DHE-M> Selecting the flight it closes
[14:16] <craag> huh?
[14:16] <craag> error?
[14:16] <Geoff-G8DHE-M> no message to be seen
[14:17] <Upu> this flight isn't on the list
[14:17] <amell> who is morpi?
[14:17] Action: Upu points at daveake
[14:17] <daveake> who indeed
[14:17] <mikestir-work> if it comes down and launches itself again from another location does that count as a no notam launch? :)
[14:17] <amell> got your long stick ready? looks like its coming your way
[14:18] <daveake> Not sure my 10 metre pole will be enough
[14:18] <jed_edu> I see lets hope the sun comes out
[14:18] <craag> Are they not sending a sentence id?
[14:18] <Upu> boasting again Dave
[14:18] <amell> put it away man
[14:18] <daveake> It's telescopic
[14:18] <Jess--> cheers for the link mfa298
[14:18] <mfa298> craag: I think there's a count field after the time
[14:19] <Jess--> so it gets bigger when you get excited daveake
[14:19] <craag> Geoff-G8DHE-M: It's crashing on lack of sentence id :/
[14:20] <craag> I should probably sort by gps_time instead of sentence id.
[14:20] <Geoff-G8DHE-M> I might be missing FLASH OR THE ERROR MESSAGE AS i'M vncING IN FROM REMOTE
[14:20] <Upu> MESSAGE RECIEVED GEOFF LOUD AND CLEAR
[14:20] <Geoff-G8DHE-M> finger poking on a tablet
[14:20] <Upu> :)
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[14:22] <Jess--> up it goes again
[14:22] <fsphil> we need a highly trained bird of prey
[14:22] <Jess--> or an air rifle
[14:23] Action: daveake stares at cat
[14:23] <daveake> cat stares back
[14:23] <craag> Geoff-G8DHE-M: It's on the issue list: https://github.com/philcrump/habrotate/issues/10
[14:23] <Jess--> why do I get the feeling there is some story about daveake's cat and a bird of prey?
[14:23] <mfa298> could be interesting if it heads to the west of great malvern. looks like two large hills there (~400m)
[14:29] <amell> any idea when POP1 is launching?
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[14:39] <sgtburned> jededu: you having fun tracking that?
[14:40] <Upu> think its down
[14:40] <Upu> but I'm expecting it to float back up again
[14:41] <sgtburned> Seems to be going up and down more than a rollercoaster
[14:41] <gonzo_> if it goes into nthe hills, it will probably gain some alt
[14:41] <gonzo_> of be pushed around
[14:42] <gonzo_> or
[14:42] <sgtburned> BAHDUDE the backup?
[14:42] <Upu> and there it goes
[14:43] <Jess--> eduhabs back
[14:43] <sgtburned> Seems to have left Bahdude behind.
[14:43] <amell> ouch
[14:43] <Geoff-G8DHE-M> Its clear of the hills as well at present http://360.g8dhe.net/HAB_Flights/2014_Flights/Eduhab1_20140604/index.php?ind=2
[14:44] <sgtburned> Nice
[14:44] <DL7AD> bouncing party!
[14:45] <gonzo_> that was an intetesting sideways jump! Maths issue?
[14:45] <amell> whats the verdict on BAHUDE, has it been left on the ground?
[14:45] <Geoff-G8DHE-M> Don't think it got that low
[14:45] <Jess--> if it's lost bahude how long is batt life on eduhab?
[14:46] <Jess--> I think it has lost some weight, looks to be climbing faster than it ever has
[14:46] <sgtburned> Battery life is 5 Hours roughly... according to the professors calculations ;D
[14:46] <sgtburned> Lost Bahdude in a tree?
[14:47] <amell> cutdown of Bahude, might give enough lift to escape?
[14:47] <g8zbj_wayne> bahude has vanished from my waterfall. eduhab1 ok though
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[14:47] <amell> how heavy was bahude?
[14:47] <sgtburned> lightweight
[14:48] <sgtburned> Polystyrene ball attached about 2m from EDUHAB
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[14:48] <amell> well, that poly ball appears to be somewhere in great malvern
[14:48] <amell> hope nobody got nutted
[14:48] <fsphil> oh it took off again
[14:49] <amell> this is a very strange flight :)
[14:49] <sgtburned> Awesome though...
[14:50] <fsphil> did it actually get low enough to land?
[14:50] <sgtburned> "Some chav has been taken out by what appears to be polystrene alien"
[14:50] <jededu_> bahude is 80g
[14:50] <fsphil> the altitude graph on spacnear only goes down to 500m
[14:50] <amell> didnt appear to land, but you never know.
[14:50] <fsphil> there are some big hills in the area
[14:50] <daveake> No signal from it here at all
[14:50] <Jess--> lowest height seen was 603m
[14:50] <sgtburned> Might have just lost GPS lock
[14:50] <fsphil> should still be sending a carrier
[14:50] <amell> breaking news, out of control balloon flies down high street, dumps a white ball and takes off again
[14:50] <fsphil> *depending on how it's wired up
[14:51] <daveake> no, nothing at all
[14:51] <Geoff-G8DHE-M> Its well clear of the hills
[14:51] <sgtburned> amell: The news would report it as syria attacking us with chemical weapons
[14:51] <sgtburned> ::)
[14:51] <Jess--> down it goes again
[14:51] <daveake> Nice strong signal from EDHAB1
[14:52] <amell> christ not again, this is likely to be the terminal one if not the next
[14:52] <daveake> Maybe EDUHAB melted the cord below
[14:52] <sgtburned> It was measuring 55 Degrees C External earlier..
[14:52] <amell> daveake: are you going to go and catch it? doesnt look that far.
[14:53] <sgtburned> Could most likely walk up to it whilst its hovering
[14:53] <daveake> It's not low enough
[14:53] <amell> bahude is :)
[14:53] <sgtburned> xD
[14:53] <fsphil> maybe
[14:53] <daveake> Nah, it died
[14:53] <fsphil> if it lost a payload I'd have thought it would rise faster/futher
[14:53] <fsphil> further
[14:54] <amell> fsphil: good point
[14:54] <fsphil> The general trend is downwards
[14:54] <sgtburned> Seems to be running at the same buoyancy xD
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[14:54] <fsphil> average is just over 1km atm
[14:55] <Jess--> fsphil it did rise faster by about 10%
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[14:55] <fsphil> didn't get higher
[14:56] <Jess--> I know
[14:56] <fsphil> average ascent speed was probably about the same
[14:56] <fsphil> how low can we track it this time
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[14:57] <fsphil> I seem to have lost the top tabs on spacenear
[14:57] <fsphil> odd
[14:57] <Geoff-G8DHE-M> http://www.webcams.travel/webcam/1349818813-Weather-Worcester-St.-Andrew-Church-Peregrine-Falcons-Worcester
[14:57] <daveake> too low for me now
[14:57] <fsphil> ah back
[14:57] <daveake> fsphil I had the same a coulpe of times recently
[14:57] <Jess--> looks like 668m
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[15:00] <Geoff-G8DHE-M> Ground level in the area is 20-40m
[15:02] <fsphil> and we're back
[15:02] <Geoff-G8DHE-M> YUp http://360.g8dhe.net/HAB_Flights/2014_Flights/Eduhab1_20140604/index.php?ind=4
[15:03] <Jess--> came up from below 535m
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[15:05] <amell> this is too painful to watch. Im off out back later
[15:05] <sgtburned> Essentially its going to glide on forever...
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[15:05] <fsphil> nah
[15:05] <fsphil> it's slowly coming down
[15:05] <amell> is it an expensive payload?
[15:05] <amell> needs recovery?
[15:06] <amell> looks like it might come down towards end of M50. perfect for daveake
[15:06] <mfa298> raspberry pi so some might deem it worth recovering others might think it's a good way of disposing of them.
[15:07] <daveake> I'll just look for the fire
[15:07] <craag> daveake: Model B is it?
[15:08] <daveake> not sure
[15:08] <daveake> has wifi
[15:08] <fsphil> oooh
[15:08] <daveake> ext temp 50C
[15:08] <sgtburned> Model B Yeah
[15:08] <daveake> wow
[15:08] <fsphil> what's the wifi being used for?
[15:08] <sgtburned> No wifi.
[15:08] <craag> toasty!
[15:08] <amell> wifi is a usb dongle
[15:08] <daveake> How is the pi powered?
[15:08] <sgtburned> Battery powered 4xAA IIRC
[15:08] <daveake> step-up?
[15:09] <mfa298> seemed to be model-B - you can just see the ethernet connector in the pic posted last ngiht
[15:09] <daveake> yeah thought so
[15:09] <amell> this might never be found given that the backup tracker is off, and if it runs out of juice before it lands.
[15:09] <sgtburned> Its AA Powered and there are Power Regulators to 5v for Tx etc
[15:10] <craag> Sounds like the up-down is due to convection from the payload heating the balloon then ;)
[15:10] <daveake> No need for 5V
[15:10] <daveake> :)
[15:11] <daveake> Use 3.3V then you'd be sgtnotburned
[15:11] <daveake> 3.3 and model A
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[15:11] <amell> coming down again now
[15:11] <daveake> Which works out at about a quarter of the power consumption
[15:12] <craag> yep, 7.5 hours off a 9V ppa!
[15:12] <craag> (with pi cam too)
[15:17] <jededu_> It has 8AA lithium 3v and 5v switching regs
[15:17] <sgtburned> I forget the running times Jed, How long did you say it ran with all the tech?
[15:18] <jededu_> 13 hours
[15:18] <jededu_> The kids at school log into it over wifi
[15:19] <sgtburned> Low enough to crack wifi and connect I bet ;D
[15:20] <Upu> jededu sure this track and altitude isn't being imported direct from a Etchasketch ?
[15:21] <LeoBodnar> nice meandering track on EDUHAB1
[15:21] <sgtburned> Balloon is drunk, Had a rough night, last nigt.
[15:22] <fsphil> it gets knocked down, but it gets up again
[15:22] <jededu_> restart
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[15:23] <sgtburned> Spooky Jed, Tony just got in and I said "Should restart soon. Near 1k"
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[15:23] <sgtburned> Any idea why it is 50c ?
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[15:25] <fsphil> lol, who dunnit
[15:26] <fsphil> EDUBOB
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[15:27] <jededu_> dead
[15:27] <sgtburned> Dead battery or... ?
[15:28] <sgtburned> last alt change was 0.0m/s
[15:30] <daveake> Just seeing a noisy drifty carrier now
[15:30] <fsphil> class dismissed
[15:31] <sgtburned> Ouch
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[15:31] <sgtburned> 10 minute since last transmission
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[15:32] <amell> landed?
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[15:33] <g8zbj_wayne> still above 600m cuz I can still hear carrier
[15:33] <amell> this will be hard if not impossible to recover
[15:33] <daveake> yes strong carrier but looks like power line not enough to run the Pi
[15:33] <fsphil> it should be low enough to be visible
[15:34] Action: amell checks the news for balloon on m5.
[15:34] <sgtburned> Elevation for that area is sea level
[15:35] <sgtburned> so it didn't hit anything, no trees in the way...
[15:36] <g8zbj_wayne> water killed both trackers?
[15:37] <sgtburned> Pretty much air tight sealed with high tech materials... :D
[15:39] <g8zbj_wayne> dunno then. wot daveake said ^
[15:39] <fsphil> pretty consistant for low voltage
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[15:39] <fsphil> shame the backup went
[15:40] <fsphil> would've been interesting to track this one to the ground
[15:40] <sgtburned> :/ Yeah
[15:40] <sgtburned> Jed did you put the new batteries in?
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[16:01] <sgtburned> you all been murdered?
[16:04] <sgtburned> How to get the Raw Log files from the tracker?
[16:04] <Geoff-G8DHE> Do you mean from the Habitat d/b
[16:05] <sgtburned> Yeah, Or at least the past 20 GPS Strings
[16:05] <Geoff-G8DHE> http://habitat.habhub.org/ept/
[16:07] <sgtburned> Thanks, Just going to run a qucik test of something ;) See if we can get a rough location
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[16:30] <sgtburned> Rough prediction from Wind Charts, rain mapping and other garbage collected off the many weather sats recommends it will be along here now
[16:30] <sgtburned> https://www.google.co.uk/maps/dir/Chipping+Norton,+Oxfordshire+OX7/Banbury/@52.0463474,-1.4670083,10z/data=!4m13!4m12!1m5!1m1!1s0x48712acd7914f0d3:0x799200c2bf9f722c!2m2!1d-1.542189!2d51.943544!1m5!1m1!1s0x4870d4d3688e13e7:0xe0ff5e2eefa0ecaa!2m2!1d-1.339775!2d52.0629009
[16:31] <sgtburned> Old one
[16:31] <sgtburned> https://www.google.co.uk/maps/dir/Chipping+Norton,+Oxfordshire+OX7/Banbury/51.7598416,-1.1574205/51.9440704,-1.5372673/@51.8973284,-1.3235195,10z/data=!4m21!4m20!1m5!1m1!1s0x48712acd7914f0d3:0x799200c2bf9f722c!2m2!1d-1.542189!2d51.943544!1m5!1m1!1s0x4870d4d3688e13e7:0xe0ff5e2eefa0ecaa!2m2!1d-1.339775!2d52.0629009!1m5!3m4!1m2!1d-1.5726125!2d51.8465521!3s0x48712d648857d1b7:0xa89226782c3ac78c!1m0!3e0
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[16:48] <Adam012> Hi all, I was just taking a look at the new http://ukhas.org.uk/guides:linkingarduinotontx2 guide and I realised that the wiring for this module is given as being very different from the old NTX2 (no resistors). Will it work with just 3.3V (has anyone tested it?) as we use a 3.3V Arduino Mini Pro? Cn we wire it like the old module or do we need to move over to the new layout?
[16:49] <mfa298> it's been updated for a new method of operating.
[16:50] <mfa298> you can do the old method (resistors and switching a pin on and off) or read through the new method that doesn't use resistors and makes use of pwm
[16:51] <Adam012> Don't fancy rewriting the software and bug testing just 3 weeks before the launch (plus one of the flight computers is already half built). We'll use the old methos and upgrade for the next mission.
[16:52] <Adam012> thanks mfa298
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[16:53] <mfa298> the benefit of going down the pwm route (at a later point) is the shift becomes software programable. with the addition of a single resistor it then becomes possible to do dominoEX (part 3 in the newly written tutorial)
[17:00] <Adam012> I'm just skimming through it now and this is definitely something we plan to include in the future (biggest bonus is the ability to avoid clashes with other payloads).
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[17:15] <ian__> My rerlatively uninformed perception is the degree of inflexibility that I believe exists in the Arduino PWM arrangements. Something that use of STxxx MCUs is likely to avoid. I am also interested in the move to interrupts, an area that I am yet to become totally comfortable with. So, on balance more techniques being exposed for investigation and exploitation by those of us that are interested in following developments as the les
[17:15] <ian__> All good stuff and much super food for thought.
[17:20] <malgar> please take a look at #habhub. We need some fixes to our payload/flight documents
[17:20] <malgar> tnx
[17:28] <mfa298> malgar: you may need to wait for someone to make the changes it's a small list of people that can do that.
[17:29] <malgar> mfa298: tnx
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[17:47] <malgar> mfa298: anyway.. maybe you can answer me. As far I understand Launch Time for flight is just to alert people to listen to us, right? It has nothing to do with the telemetry system that will work anyway. Our error is with timezones.
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[17:48] <mfa298> it affects when the flight appears in dl-fldigi and I think what data get's included in /ept when you search by flight name
[17:49] <malgar> they are already in dl-fldigi
[17:49] <mfa298> as long as the payload doc matches the telem being sent the data will be stored
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[18:14] <aadamson> anyone got a simple/reliable idea for dropping 2.0v to 1.8 without using an ldo (and I don't think I can find a diode with small enough drop)
[18:17] <bertrik> use a led perhaps :)
[18:17] <bertrik> oh, sorry, I misunderstood
[18:18] <aadamson> yeah I don't know what a 1.8v TCXO will do being fed probably 1.9-2.0v
[18:18] <aadamson> and I'll never find a diode with only .2v drop
[18:18] <fsphil> voltage divider. simple and reliable
[18:18] <fsphil> but terribly inefficient
[18:19] <aadamson> yeah exactly... I wonder, I got some really low BAT760's... I'll have to go look at what their drop might be at 2.0v
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[18:24] <aadamson> nope that won't work, they are .480 and I can't go below 1.6. I could use a zener, but that's pretty wasteful too
[18:25] <aadamson> I guess I'll just try the TCXO at 2.0 and see what happens
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[18:27] <jededu> That was interesting I think I triangulated it into some very dense woods its still transmitting a tone but couldnt see it
[18:28] <Bsis_jwhalley> Hi, I'm part of a group planning a launch next week from elsworth. We've been looking at the weather data but I was wondering what is the source of these data and is it publicly accessible?
[18:28] <Upu> Hi Bsis_jwhalley
[18:28] <Upu> do you mean the actual weather or the fligth prediciton ?
[18:28] <Upu> prediction
[18:29] <Bsis_jwhalley> The actual weather data if possible, just so we can take a look at it ourselves. We trust the predictor and are happy to use it but were wondering what its source was.
[18:30] <Upu> NOAA GFS
[18:30] <Upu> Btw Elsworth has an hourly : http://predict.habhub.org/hourly/elsworth/
[18:30] <Upu> I guess you've organised this through Steve ?
[18:30] <Upu> http://www.nco.ncep.noaa.gov/pmb/products/gfs/
[18:31] <Bsis_jwhalley> I think so. I'm not the main person for logistics but I'm doing a lot regarding suitable dates.
[18:31] <Upu> ok
[18:31] <Bsis_jwhalley> I've done a fair bit of the programming as well.
[18:31] <fsphil> the source of some of the data is the met office sonde launches
[18:32] <fsphil> noaa feed that and data from other weather agencies and feed it into a big simulator which produces that GFS data
[18:32] <Bsis_jwhalley> Great thanks for the weather data. Take a good look at that. For those that have used the predictor how accurate have you found it to be?
[18:33] <Upu> generally the accuracy is very good +/-10km
[18:33] <daveake> So long as you get the fill right
[18:33] <Upu> however its only as good as the underlying wind data
[18:33] <fsphil> more accurate the closer to the launch time
[18:33] <daveake> I'm sure Steve will make sure you do :)
[18:33] <Upu> and NOAA only record wind data up to 30km
[18:33] <Upu> so if you go above that the accuracy of the prediction will drop
[18:34] <Bsis_jwhalley> We were on
[18:34] <Upu> however if you're uploading to spacenear.us you'll get a live prediction
[18:34] <Bsis_jwhalley> We were only planning to go to 30000.
[18:34] <Upu> should be fine
[18:35] <Bsis_jwhalley> But the spacenear.us looks good. We're planning to use the car chase app as well just for the complete package.
[18:35] <Upu> its only screwed up twice in my experience
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[18:35] <Upu> one of those we put quite a bit of kit into the English channel :/
[18:36] <Bsis_jwhalley> Sounds fun. Hope it doesn't do that. We've put a gopro on. Bad news if that happens.
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[18:38] <Upu> using a radio tracker ?
[18:39] <craag> strangeness
[18:39] <craag> oops wrong chan
[18:40] <Bsis_jwhalley> Yeah we got a grant to do it so we've basically spent a fair bit. We have radio, GPS, gopro, two temp sensors and a couple of others. We're using arduino and we were originally going to put a pressure sensor on but we couldn't find any that went down to the pressure we needed.
[18:40] <jonsowman> think it's nonetheless accurate craag
[18:40] <Upu> the BMP085 is ok to a certain altitude
[18:41] <Upu> https://dl.dropboxusercontent.com/u/63720513/Images/HAB/horus15_5_alt_pressure.png
[18:41] <Upu> but they are fairly useless on high altitude balloons, the pressure goes down as you go higher and up as you come down again
[18:41] <Bsis_jwhalley> We did see that but eventually we just decided to use the GPS but we will probably put one on for our next launch.
[18:41] Action: Upu shrugs :)
[18:42] <jededu> Upu do you think that was just heavy rain
[18:42] <sgtburned> Upu: Is that a bug in the hardware or software?
[18:42] <Upu> hardware sgtburned and its not a bug, its out of the manufacturers range
[18:42] <Upu> jededu not sure
[18:42] <Upu> the whole profile was very wierd
[18:42] <mikestir> aadamson: why can't you use an ldo?
[18:42] <sgtburned> Upu: Ahh okay.
[18:42] <Upu> so you can't recieve anything from the backup tracker ?
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[18:43] <jededu> Never seen it before? no EDUHAB1 is transmitting a tone its in woods
[18:43] <Upu> never seen anything like that before
[18:43] <jededu> Nothing from backup its probably just wet
[18:44] <Upu> how well sealed was the backup ?
[18:44] <aadamson> mikestir, you are *bad* influence... *I really should be using one anyway for a couple of reasons*... I found a pretty good one for 2.0 -> 1.8 from TI yesterday a lvc or some such, guess I'll revisit that again
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[18:44] <mikestir> ti have loads. you should find one with dropout of 150mV or less without too much trouble
[18:45] <jededu> very all taped up inc cord hole and 4ins of cord
[18:45] <mikestir> I mean if you're considering using a resistor and a zener you might as well use an ldo because it will probably end up smaller
[18:45] <Upu> very odd
[18:45] <Upu> and nothing at all from the backup not even a tone ?
[18:46] <jededu> It may have hit somthing it was on the bottom
[18:46] <Upu> I wondered that
[18:46] <Upu> would be great to get it back and find out
[18:46] <aadamson> mikestir, tlv that's the part... let me go look, I think I can find it in sc70-5
[18:46] <amell> jededu: do you have a yagi or something to get its position more accurately?
[18:46] <jededu> I may go down early morning when its dry if the pi is dead the batts will last
[18:47] <amell> it may be a tone from an alien spaceship, be careful, be very careful when entering the woods.
[18:47] <Upu> ok jededu
[18:48] <jededu> Yes i tracked it to an elevated woodded area but no access
[18:48] <aadamson> mikestir, if I made that one change I could run the board on 3v3 too :)... so I guess I should look at that...
[18:48] <amell> no access? as in gated?
[18:48] <daveake> bears having a pi-cnic?
[18:48] <jededu> too dense
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[18:49] <amell> maybe you just need to send a small person in?
[18:49] <jededu> funny :) ill have another try tomorrow
[18:49] <mfa298> aadamson: from memory Ge diodes are 0.3V drop and wikipedia seems to suggest 0.2v for schotty diodes
[18:49] <aadamson> mikestir, hmm, the tlv713 doesn't need any caps... maybe there is hope, trying to shoe horn it in to a certain location
[18:49] <sgtburned> Jed, Come pick me up tomorrow ;D I'll come hunting with you
[18:50] <amell> I missed bsis_jwhalley - do you know when the elsworth launch is?
[18:50] <mikestir> tps73118 as well aadamson
[18:50] <mclane_> Hi upu, can you please approve our next flights document? ID is 3d9c9e641656ee314dc379569dccdb6e
[18:50] <mclane_> Thanks!
[18:51] <aadamson> mfa298, thanks, I'm going to take one more run up this hil... Thanks mikestir, I'll check that too
[18:51] <jededu> sgtburned its a long way in the wrong direction or I would
[18:51] <aadamson> ones I looked at yesterday wanted 2.4v drive, I only have 2 :)
[18:51] <mikestir> do a parametric search - they have loads
[18:51] <aadamson> yeah and I don't need much current
[18:51] <aadamson> but want low quies...
[18:52] <amell> mclane_: Regensburg? Is it a VW balloon?
[18:52] <mclane_> why VW?
[18:52] <amell> when i start my golf built in GPS, it always defaults to regensburg.
[18:52] <amell> I guess theres some VW facility there.
[18:53] <daveake> aadamson I suspect a Schottky diode will be your best option
[18:53] <mclane_> no there is no VW facility
[18:53] <aadamson> yeah, thanks daveake I've got some of those, just noe the right forward voltage... but looking at options...
[18:54] <mclane_> your VW nav is a product from Continental - they are located there
[18:54] <daveake> check the V/I curve for the current range you're expecting
[18:54] <amell> mclane_: Ah. its well known in the golf community as regensburg syndrome :)
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[18:55] <daveake> Also worth checking if your 1.8V parts will actually be happy at 2V
[18:55] <mclane_> I know, I work there (but different department :)
[18:55] <amell> lol
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[18:55] <aadamson> yeah, I run one that way now, I just don't know if a TCXO that is 1.8v would run on 1.9-2.0
[18:55] <mikestir> what is its absolute max?
[18:55] <sgtburned> Wait what? BAHUDE Has signal?
[18:56] <aadamson> mikestir, on the TCXO? 1.8+-5%
[18:56] <aadamson> but I've not found an actual datasheet that lists specifics
[18:56] <aadamson> it's the kt2520 in 1.8v
[18:56] <sgtburned> Position: 52.07707,-2.21839 Altitude: 22329 m Rate: 3.8 m/
[18:56] <g8zbj_wayne> nice height for bahude - what did I miss?
[18:57] <sgtburned> It going down for 4 hours
[18:57] <bertrik> is it a test payload?
[18:57] <daveake> wut
[18:57] <sgtburned> Nope... Backup for EDUHAB1 ?
[18:57] <g8zbj_wayne> so you didn't re-launch it then
[18:58] <sgtburned> Nope
[18:58] <amell> bahude relaunched? WTF
[18:58] <amell> tuning in
[18:58] <sgtburned> Nope... Pretty sure jededu hasn't relaunched
[18:58] <amell> what is it again? 434.?
[18:58] <amell> im really confused :)
[18:59] <gonzo_> .566
[18:59] <sgtburned> No idea, Its an hour behind on the clock
[18:59] <mikestir> ha
[18:59] <mikestir> I got it
[18:59] <sgtburned> REALLY?!
[18:59] <sgtburned> xD
[18:59] <gonzo_> strong sigs
[18:59] <amell> is there any way it could have dumped the pi on the ground and left again?
[18:59] <sgtburned> jededu: The aliens have took your RPi and Backup
[19:00] <sgtburned> amell: It goes Balloon -> Pi -> Backup
[19:00] <amell> so the pi has to be with it
[19:00] <sgtburned> Unless the PI was ripped from the casing
[19:00] <sgtburned> Which would be why it has a signal in the woods
[19:00] <amell> wow.
[19:00] <amell> what a story
[19:00] <sgtburned> and why its at 22k meters ( cut off is as 12km )
[19:00] <g8zbj_wayne> the eduhab1 cw tone is as strong as BAHUDE's rtty - so its up there with it
[19:01] <jededu> WOW
[19:01] <sgtburned> 0_______0
[19:01] <sgtburned> JED
[19:01] <gonzo_> depending where the payloads were attavhed, poss someone has cast the line off and is raping the contents whilst the balloon goesback up?
[19:01] <sgtburned> ALIENS HAVE TOOK OUR PI!
[19:01] <amell> I told you there were aliens in the woods
[19:01] <gonzo_> ah, I saw that carrier, assumed it was local qrm
[19:01] <amell> this makes no sense.
[19:01] <sgtburned> amell: I will never doubt you again
[19:02] <jededu> And its the correct ascent rate
[19:02] <sgtburned> Damn..
[19:02] <sgtburned> Its an hours behind on the clock though :3
[19:02] <mikestir> sgtburned: "No idea, Its an hour behind on the clock" <- it's UTC
[19:02] <mfa298> what the .... that's some interesting flight
[19:02] <sgtburned> Ahh
[19:02] <sgtburned> That makes sense now
[19:02] <jededu> I need to point yagi at it hang on
[19:02] <mikestir> it's a big signal here
[19:03] <mikestir> I suppose you can just point a wet bit of string at it
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[19:03] <daveake> strong here too
[19:03] <gonzo_> would not expect anyoen in the uk to need a yagi !
[19:03] <LeoBodnar> it probably finally broke throught the rain clouds
[19:03] <amell> from dense woods?
[19:03] <bertrik> my dl-fldigi says 453.9 km distance, and a very loud and clear signal
[19:03] <amell> Aliens for sure.
[19:03] <sgtburned> Knew it.
[19:04] <LeoBodnar> as it was descending all wet the volume decreased, water rolled off, it lifted up, expanded, hit the cloud, collected water, descended
[19:04] <LeoBodnar> repeat
[19:04] <sgtburned> Rinse and repeat... Literally
[19:04] <amell> Leobodnar: if you dont believe in aliens, thats a good theory.
[19:04] <LeoBodnar> should be very clean by now
[19:05] <gonzo_> wonder why the .525 sig is carrier? Batts on pi dead? (if that's what it is)
[19:05] <daveake> 3.4m/s is still float territory
[19:05] <sgtburned> Might be a dead board but still powering the Tx ?
[19:06] <Upu> approved mclane_
[19:06] <mclane_> Thanks Anthony!
[19:06] <daveake> Could be not enough power for the Pi, or software crashed
[19:06] <sgtburned> daveake: Software has many, many backups for failures
[19:06] <Upu> wait up
[19:06] <Upu> backup tracker back ?
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[19:07] <sgtburned> Yes
[19:07] <amell> yes
[19:07] <craag> lol it's actually ascending
[19:07] <jededu> I have tested bats 11 hours min on the pi
[19:07] <sgtburned> Aliens decided to help us with their advanced technology.
[19:07] <craag> taking ISH into it's own hands!
[19:07] <sgtburned> *cries*
[19:07] <amell> is jededu still at woods?
[19:07] <jededu> No home
[19:07] <Upu> ok so award for the wierdest flight profile goes to jededu
[19:08] <sgtburned> *Claps*
[19:08] <sgtburned> Shittiest software goes to Burned
[19:08] <Upu> and going up at 4.2m/s
[19:08] <sgtburned> Most likely the cause :(
[19:08] <gonzo_> witchcraft
[19:08] <sgtburned> Aliens
[19:08] <amell> im not seeing this
[19:09] <amell> no wonder. im way over the horizon
[19:09] <Upu> no payload doc for this
[19:10] <sgtburned> Haha Gotta love the graph of the BAHUDE. 2:40 it went dead. 6:55 it came back to us from the dead
[19:10] <amell> who is G3XHY ? can they correct their coords from the north sea.
[19:10] <mfa298> this has to be one of the longest up burst down flights.
[19:10] <mfa298> assuming it bursts
[19:11] <daveake> At this rate nothing would surprise me
[19:11] <daveake> Including aliens
[19:11] <sgtburned> mfa298: Its currently on an alien space ship heading for Delta-KSP34.
[19:12] <amell> sgtburned: well, lets see if it crosses the karman line first.
[19:12] <mfa298> amell: look at the horizon for the ones that's actually reporting. You should be in the 0 deg horizon by quite some margin
[19:12] <craag> So... odds on this setting the altitude record?
[19:12] <craag> :P
[19:12] <sgtburned> xD It will go to LEO
[19:13] <amell> mfa298: youre right, i was getting the two circles confused.
[19:13] <mfa298> craag: probably by going back down to 1km then back up to break the record.
[19:13] <amell> 434.599?
[19:13] <craag> mfa298: Heh yeah, to get a run up!
[19:14] <Upu> BAHUDE has reset entirely
[19:15] <daveake> What's the expected burst alt? And has that been set on SUNS?
[19:15] <daveake> SNUS
[19:15] <Upu> my code doesn't reset so that must have been a power failure
[19:15] <daveake> mfa298, I think it's going for the "highest cumulative altitude change" record
[19:15] <sgtburned> xD
[19:16] <jededu> got it
[19:16] <sgtburned> Nice!
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[19:16] <Upu> must have been water jededu
[19:16] <Upu> and as its climbed its boiled off
[19:16] <lz1dev> oh wow
[19:17] <Upu> whats expected burst alt ?
[19:17] <jededu> It was very wet 36000
[19:17] <daveake> Anyone going after this when it lands?
[19:18] <daveake> which will probably be next week :/
[19:18] <Upu> you I suspect daveake :)
[19:18] <daveake> lol
[19:18] <jededu> I might :)
[19:18] <Upu> prediction values updated
[19:19] <amell> 434.566? are we sure?
[19:19] <Upu> I guess people have checked the Pi's frequency ?
[19:19] <sgtburned> Dead tone
[19:19] <Upu> k
[19:19] <daveake> amell yes
[19:19] <sgtburned> Board = Powered, Pi = Dead / software down... ;(
[19:19] <Upu> predicted burst in 1 hour
[19:19] Action: daveake makes cuppa
[19:20] <amell> i can see it on the WF but cant hear it
[19:20] <amell> this £7 dongle is the shittiest thing known to man
[19:20] <Upu> heh
[19:21] <Upu> let me pooint out the bit that you need to pay attention too
[19:21] <sgtburned> amell: Whats your settings like? I know at work we needed a LOT of gain for it to peak properly and hear it nicely.
[19:21] <Upu> [20:20] <amell> this £7 dongle is the shittiest thing known to man
[19:22] <amell> did i mention the frequency error on calibration is 79ppm.
[19:22] <lz1dev> my £1 18650 rechargable 6000mah battery begs a differ
[19:22] <lz1dev> amell:
[19:23] <daveake> lzldev Has it exploded yet?
[19:23] <lz1dev> not yet
[19:23] <Upu> 6000mAH :)
[19:23] <lz1dev> :D
[19:23] <Upu> Actual capacity 497mAH
[19:23] <Upu> dx.com special
[19:23] <lz1dev> exactly
[19:23] <lz1dev> thats exactly how much charge it holds
[19:24] <lz1dev> my torch kills it in 30 minutes
[19:25] <daveake> Open it up
[19:25] <daveake> See how much is cell
[19:25] <daveake> and how much isn't
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[19:25] <lz1dev> i wouldn't be suprise if its full of soil
[19:26] <lz1dev> or patato starch
[19:26] <mikestir> amell: I used an rtl dongle for a while - they're not that bad.
[19:26] <mikestir> if the frequency error is 79ppm then you didn't calibrate it very well!
[19:26] <amell> that is my calibration offset&.
[19:26] <daveake> bursty burstburst
[19:27] <mikestir> right. well that's not too bad - they do use the cheapest crystals they can find and probably just throw in any old load caps
[19:27] <amell> i can see a line through the wf, but cant hear any rtty
[19:27] <mfa298> amell: well for £7 I wouldn't expect too much. Most people would add a zero on the end for a reasonable receiver or a couple of zeros for transceiver
[19:27] <amell> just white noise
[19:27] <bertrik> amell: using USB modulation?
[19:27] <amell> bertrik: well done :)
[19:27] <daveake> BAHUDE on its way down
[19:27] <amell> fucks sake.
[19:28] <lz1dev> watch out ground, here comes BAHUDE :)
[19:28] <sgtburned> Burst like a little f****r
[19:28] <bertrik> oh noo
[19:28] <jededu> At least its entertaining fast
[19:28] <lz1dev> don't try to catch it
[19:28] <sgtburned> jededu: ignore him! stand under it! PROTECT THE BACKUP!
[19:28] <amell> is the chute on it?
[19:28] <sgtburned> Should be...
[19:29] <jededu> of course
[19:29] <mikestir> depends if the aliens put it back on after they gassed it back up
[19:29] <gonzo_> bit of wobble, ama nd fm on it
[19:29] <LeoBodnar> it's probably a solid lump of ice now
[19:29] <gonzo_> pft, AM and FM on it
[19:29] <Upu> yeah I'll be interested to know what state its in :)
[19:30] <LeoBodnar> frozen chute
[19:30] <LeoBodnar> spearhead
[19:30] <sgtburned> Or just low atmosphere?
[19:30] <jonsowman> Spears of Death (TM)
[19:30] <sgtburned> No idea what it is like at 28,000m
[19:30] <LeoBodnar> lonely
[19:30] <jonsowman> cold
[19:30] <sgtburned> cold...
[19:30] <sgtburned> Damnit
[19:30] <jonsowman> ;)
[19:30] <bertrik> jededu: what kind of power is it transmitting? it was nice and loud over here at 466 km distance
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[19:31] <sgtburned> bertrik: The aliens recharged the batteries for us
[19:31] <Upu> its set to 14db I think
[19:31] <Upu> as its using a screw on antenna
[19:31] <sgtburned> Slowing down / hitting terminal velocity...
[19:31] <LeoBodnar> dBm?
[19:32] <Upu> yeah
[19:32] <LeoBodnar> ok
[19:32] <Upu> little more than it should be due to inefficient antenna
[19:32] <LeoBodnar> that's about 20mW
[19:32] <LeoBodnar> sure
[19:32] <Upu> which in fairness doesn't seem very inefficient at all
[19:32] <bertrik> what kind of antenna does it have?
[19:32] <craag> Upu: Is this one of the plug'n'pavas?
[19:32] <Upu> lets pretend its set to 11dB
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[19:32] <Upu> yeah with a Diamond SRH519 on it
[19:33] <Upu> Well
[19:33] <sgtburned> -20m/s. Slowing down :D
[19:33] <Upu> a Harvest SRH-519
[19:33] <LeoBodnar> so the ball is dropping?
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[19:34] <Upu> well and truely
[19:34] <Upu> yes craag
[19:34] <Upu> as a backup
[19:34] <Upu> which appears to have been promoted to primary
[19:34] <craag> Yeah I saw it in Matt's photos
[19:35] <arko> weee
[19:35] <Geoff-G8DHE> http://360.g8dhe.net/HAB_Flights/2014_Flights/Eduhab1_20140604/index.php?ind=5
[19:35] <arko> http://360.g8dhe.net/HAB_Flights/2014_Flights/Eduhab1_20140604/EDUHAB1_201406041500.jpg
[19:35] <arko> haha
[19:35] <craag> Upu: That harvest antenna looks very 1/4wave-ish
[19:36] <Upu> it is but it has no radials
[19:36] <Upu> the power setting wasn't changed
[19:36] <sgtburned> jededu: Did you get a chance to upload any photos xD
[19:36] <craag> Mounted direct to the PCB?
[19:36] <Upu> it was set for when I was using a stub
[19:36] <Upu> no screw on
[19:36] <craag> I mean on an SMA packet on the PCB?
[19:36] <Upu> so my apologies the power setting should have been turned down when I switched the antennas
[19:37] <Upu> yeah
[19:37] <craag> Yeah no wories
[19:37] <craag> Probably a chinese antenna with a 50 ohm resistor hiding in the plastic bit right ;)
[19:38] <Upu> hah those are the standard Baofeng antennas
[19:38] <Upu> antenna shaped dummy loads
[19:38] <craag> Yeah, a lot of the 'wonder' HF antennas are the same
[19:38] <mfa298> must be a good antenna though if they get a swr of 1:1 :p
[19:38] <Upu> http://imgur.com/VNrzpk4
[19:39] <bertrik> nice
[19:39] <craag> Still using the '22?
[19:39] <amell> ok i give up
[19:40] <sgtburned> jededu: What do you reckon the Pi could survive speed wise.
[19:41] <Upu> no craag
[19:41] <Upu> I have a new version of it
[19:41] <Upu> based on the MTX2
[19:41] <craag> Oh ok
[19:41] <jededu> I knew there was enough gas in it :)
[19:42] <Upu> well its a test bed for the MTX2 really
[19:42] <Upu> daveake is off now I believe
[19:42] <bertrik> sgtburned: I vaguely remember a rule of thumb, like landing speed is half the speed at 10 km or so
[19:42] <sgtburned> jededu: Feel like launching a small rocket out of a balloon at 28,000 ?
[19:43] <sgtburned> 9/ms !
[19:43] <sgtburned> Spoke too soon
[19:43] <Upu> you're going to land on a Buddist retreat
[19:43] <Upu> ahha
[19:43] <sgtburned> HAHA
[19:43] <Upu> http://adhisthana.org/
[19:43] <mfa298> sgtburned: it will slow down as it descends as there's more air for the parachute to work with
[19:44] <Upu> thats pretty quick
[19:44] <sgtburned> mfa298: Worked it out :) It was at 30m/s and I assumed there was little resistance. Then it hit 18k and shot down to 15m/s
[19:44] <Upu> dave is mobile
[19:44] <amell> should get to about 4-5m/s for ground level.
[19:44] <amell> is the dave going to collect?
[19:45] <amell> ah yes, i see the chase car is on the road
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[19:45] <sgtburned> 21mph... Wonder if it can survive that ;D
[19:46] <amell> how big is the chute?
[19:46] <jededu> 30
[19:47] <amell> dave should be able to see it then
[19:47] <jededu> should be 5
[19:47] <amell> 30 chute?
[19:47] <jededu> m/s
[19:48] <jededu> Yes
[19:48] <mclane_> 30 inch
[19:48] <mclane_> sibot?
[19:49] <amell> 2.5 ft
[19:49] <SIbot> In real units: 5 ft = 1.52 m
[19:49] <amell> what!?!
[19:49] <sgtburned> HAHA
[19:49] <amell> 30 inch is 2.5 foot = 1.52/2 m
[19:50] <sgtburned> 30 Inches = 0.7 Meters
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[19:51] <mclane_> sibot does not handle float numbers?
[19:51] <amell> sibot fail
[19:51] <sgtburned> -0.1ft
[19:51] <SIbot> In real units: 1 ft = 0.30 m
[19:51] <lz1dev> SIbot: has science gone too far?
[19:51] <sgtburned> xD
[19:52] <LeoBodnar> j ft
[19:52] <mfa298> you could always extend it to support other forms of measurement
[19:52] <amell> 0005 ft
[19:52] <SIbot> In real units: 0005 ft = 1.52 m
[19:52] <lz1dev> 2147483648 ft
[19:52] <SIbot> In real units: 2147483648 ft = 654553 km
[19:52] <LeoBodnar> À ft
[19:52] <amell> 5.000 ft
[19:52] <SIbot> In real units: 000 ft = 0.00 m
[19:52] <sgtburned> HAHA
[19:52] <amell> fail
[19:52] <LeoBodnar> this is not rational
[19:52] <sgtburned> Broke it you little...
[19:52] <lz1dev> 21474836480000000000000000000000000000000000000000000 ft
[19:52] <SIbot> In real units: 214748364800 ft = 65455302 km
[19:53] <amell> 5.001 ft
[19:53] <SIbot> In real units: 001 ft = 0.30 m
[19:53] <sgtburned> NULLft
[19:53] <lz1dev> 0.000000000000000000000000000001 ft
[19:53] <SIbot> In real units: 000000000000 ft = 0.00 m
[19:53] <sgtburned> Nope, Removes the .
[19:53] <sgtburned> 99999.1ft
[19:53] <SIbot> In real units: 1 ft = 0.30 m
[19:53] <amell> wow
[19:53] Nick change: virgil_ -> iz2kzv
[19:53] <craag> Who on earth uses decimal feet
[19:53] <LeoBodnar> *1 ft
[19:53] <SIbot> In real units: 1 ft = 0.30 m
[19:54] <LeoBodnar> 1 ft ft
[19:54] <SIbot> In real units: 1 ft = 0.30 m
[19:54] <craag> I did not comprehend that a sane person would ever use decimal feet
[19:54] <Laurenceb> 10^9ft
[19:54] <SIbot> In real units: 9 ft = 2.74 m
[19:54] <lz1dev> 99999999999999999 ft
[19:54] <SIbot> In real units: 999999999999 ft = 304800000 km
[19:54] <Laurenceb> 1e9ft
[19:54] <SIbot> In real units: 9 ft = 2.74 m
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[19:54] <lz1dev> obvious regex is obvious
[19:55] <craag> lz1dev: It's on github, pull reqs for that are very welcome ;)
[19:55] <sgtburned> ([0-9]*[.]+[0-9]*)ft
[19:55] <LeoBodnar> ll ft
[19:55] <craag> Twas the first regex I ever wrote
[19:55] <sgtburned> craag: Links?
[19:55] <craag> https://github.com/philcrump/SIbot
[19:55] <amell> ½ ft
[19:55] <sgtburned> haha
[19:55] <Geoff-G8DHE> Oh god the Aliens got to Dave and cloned him!
[19:55] <craag> hah amell
[19:56] <sgtburned> It looks for a number then ft
[19:56] <amell> ¼ ft
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[19:56] <craag> sgtburned: yep
[19:56] <sgtburned> 1.a123ft
[19:56] <SIbot> In real units: 123 ft = 37 m
[19:56] <craag> very simple
[19:56] <sgtburned> :)
[19:56] <craag> not really designed to be correct more than useful
[19:56] <sgtburned> [0-9]*[,]?[0-9]+[ ]*f[e]{0,2}t"
[19:56] <lz1dev> .5 ft
[19:56] <SIbot> In real units: 5 ft = 1.52 m
[19:56] <Upu> I suspect jededu is close as well
[19:56] <craag> 34,000 ft
[19:56] <SIbot> In real units: 34,000 ft = 10 km
[19:57] <lz1dev> ,5 ft
[19:57] <SIbot> In real units: ,5 ft = 1.52 m
[19:57] <amell> is jededu mobile?
[19:57] <Upu> someone is uploading with EDU0001
[19:57] <Upu> and must be close
[19:58] <sgtburned> EDU is Jed ;)
[19:58] <amell> cant see that on snus
[19:58] <Upu> Receivers: EDU0001, M0RPI_chase
[19:58] <sgtburned> Hes going to Ninja Dave and steal the Pi
[19:58] <amell> oh yeah
[19:58] Action: mfa298 suspects daveake already has enough Pi's
[19:58] <sgtburned> Have fun with the field search
[19:58] <sgtburned> mfa298: 1 more to the collection
[19:59] <sgtburned> Was so close to 29k as well!
[19:59] <amell> dave might just see it come down.
[19:59] <amell> touch and go
[19:59] <amell> almost forecast to land on his car bonnet
[19:59] <LeoBodnar> Dave is yawning probably
[20:01] <sgtburned> jededu: You are going to love this, You know the last gate to close when we left? I closed it and slipped on a rock covered in sheep... Stuff. Left leg = covered in... Stuff that I won't go into detail with
[20:01] <bertrik> -5.2 m/s descent now
[20:01] <sgtburned> Open the window and hold your hand out!
[20:01] <LeoBodnar> snus screen status: "Refreshing predictions..."
[20:01] <gonzo_> then get a lift to casulaty
[20:01] <sgtburned> gonzo_: yolo...
[20:02] <amell> dave seems to have stopped?
[20:02] <sgtburned> Stopped for a pint
[20:02] <LeoBodnar> stopped for a yawn
[20:02] <sgtburned> ;D
[20:03] <Geoff-G8DHE> Called in to fill up the tank I think!
[20:03] <craag> Sounds likely Geoff!
[20:03] <bertrik> could have landed by now
[20:03] <amell> hes in the co-op car park
[20:04] <craag> All the rpis in the car weighing it down...
[20:04] <amell> think hes getting shopping in
[20:04] <Upu> lol
[20:04] <LeoBodnar> is Dave driving a tank?
[20:04] <sgtburned> LeoBodnar: Walking it
[20:04] <Upu> pretty much yes
[20:04] <amell> yeah, hes in the co op
[20:04] <amell> getting a few tinnies for jededu
[20:05] <jededu> I need it :) that was entertaining
[20:05] <sgtburned> I think its landed.
[20:05] <Upu> are you mobile jededu ?
[20:05] <amell> looks like it. not sure why he isnt closer
[20:05] <jededu> No
[20:06] <Upu> who is running EDU00001 ?
[20:06] <sgtburned> Still getting signal but same location give or take a few meters
[20:06] <jededu> Me from home
[20:06] <Upu> must be close
[20:06] <jededu> bham
[20:06] <LeoBodnar> jededu have you outsourced the chasing?
[20:07] <Upu> it will be down now
[20:07] <Upu> should get an update soon
[20:07] <jededu> No I chaced for 4 hours got soaked and came home
[20:07] <jededu> chased
[20:07] <amell> would like to know how accurate that prediction was
[20:07] <LeoBodnar> XD
[20:07] <jededu> When I left it it was down
[20:07] <amell> prediction didnt move much
[20:07] <LeoBodnar> "Refreshing prediction" it said
[20:08] <sgtburned> amell: Original prediction at time of launch or?
[20:08] <amell> the one on the map now
[20:08] <amell> Predicted Landing 52.0642, -2.37525 at 20:04 UTC
[20:08] <LeoBodnar> depends on elevation
[20:08] <Geoff-G8DHE> Ground in that area is around 110m
[20:09] <amell> algorithm doesnt account for elevation? Im surprised
[20:09] <bertrik> ah, the cars are on the move again
[20:09] <craag> "elevation" : 144.4054718017578
[20:09] <craag> "resolution" : 152.7032318115234 :P
[20:09] <LeoBodnar> picometres?
[20:10] <craag> That's down to hundreds of femtometres I think
[20:10] <amell> he should be hearing it now
[20:10] <craag> +- 76.35m :P
[20:11] <LeoBodnar> antenna has probably penetrated the crust
[20:11] <sgtburned> Wait, Is Morpi_Chase another car or just double / laptop
[20:11] <craag> SO given that, it's probably just west of the B4218
[20:11] <Upu> 2 Pis in the same car
[20:11] <Upu> he'll stop up and get a final position I suspect
[20:11] <amell> should be visible
[20:11] <Upu> lol amell
[20:11] <gonzo_> he prob has to stop and retune, unles julie is in the car
[20:12] <Upu> if only it worked like that
[20:12] <gonzo_> snap
[20:12] <Upu> Julie is with him
[20:12] <Upu> there you go
[20:12] <Upu> update in ...
[20:12] <Upu> now
[20:12] <sgtburned> Nice
[20:12] <amell> ugh in trees
[20:12] <Upu> don't worry
[20:13] <Upu> we have kit for that
[20:13] <Upu> saw
[20:13] <sgtburned> SHAKE THE TREE
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[20:13] <craag> dave is rather experienced with trees
[20:13] <gonzo_> just misse the power lines and railway line
[20:13] <Geoff-G8DHE> http://360.g8dhe.net/HAB_Flights/2014_Flights/Eduhab1_20140604/EDUHAB1_201406042117jpg.jpg
[20:13] <sgtburned> Oh wow that is close
[20:15] <sgtburned> Looks like that area is clear of Trees
[20:15] <sgtburned> or atleast minimal trees
[20:15] <amell> seems to be more of a large hedge
[20:15] <Geoff-G8DHE> Parking up
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[20:16] <gonzo_> the trees don't look too tall there
[20:16] <amell> btw, what is the accuracy of this gps? seems to twitch around a lot
[20:17] <gonzo_> going a few yds north would give that gateway to pull into
[20:17] <amell> i think hes got it
[20:17] <Upu> thats normal GPS gitter amell
[20:17] <Upu> its actually in pedestrian mode
[20:17] <Upu> so about as accurate as you're going to get
[20:17] <Upu> +/-2 meters
[20:18] <amell> that seems a lot more than +/- 2m
[20:18] <LeoBodnar> 30m nominally
[20:18] <amell> using the cars down the road for scale seems to jitter around 15m in every direction, Im a bit surprised by that.
[20:19] <Upu> its actually about 10 meters
[20:19] <amell> can this be improved on using a different mode?
[20:19] <Upu> and the transmitter is only reporting to 5 dp
[20:19] <sgtburned> amell: Those cars are lego cars. We swear its super accurate
[20:20] <Upu> sure speak to the US military ask for the encryption codes
[20:20] <amell> thats not accurate enough for what i wanted.
[20:20] <Upu> thats as accurate as you get with consumer GPS
[20:20] <Upu> those cars aren't scale btw
[20:20] <amell> theres cars parked just south west.
[20:20] <sgtburned> They are toy cars :)
[20:20] <Upu> that jitter is +/- 5 meter
[20:20] <sgtburned> They have it ?
[20:21] <sgtburned> They are walking about with it :D
[20:21] <LeoBodnar> amell you can increase accuracy by integrating reading over longer period
[20:21] <LeoBodnar> say few days
[20:21] <Upu> and increasing the number of digits
[20:21] <Upu> you can put them in stationary mode and do a survey
[20:21] <Upu> and get it sub 1 meter
[20:21] <Upu> but like Leo says it takes a while
[20:21] <sgtburned> You could also average out 3 / 5 results.
[20:21] <amell> i need to be able to find something in a corn field. if i get those coords its not accurate enough
[20:21] <bertrik> there! it moved
[20:22] <Upu> it is accurate enough
[20:22] <Upu> trust me
[20:22] <sgtburned> Its definitely accurate enough, We can tell which tree it landed in. Thats more than good enough.
[20:22] <Upu> its somewhere in that squiggle
[20:22] <LeoBodnar> any time i read "it's in the trees!" i hear Kate Bush voice
[20:22] <amell> so i tx the coords, and then do a circular search pattern in the corn, i should come across it.
[20:22] <sgtburned> xD
[20:22] <amell> definately no more than 5-10m max?
[20:23] <sgtburned> amell: You can also get a handheld receiver to fine tune it
[20:23] <Upu> amell your train will be 30 meters long
[20:23] <Upu> payload at one end
[20:23] <Upu> parachute and balloon at the other
[20:23] <amell> yes, but remember my application is rocket recovery
[20:23] <Upu> fine just follow the fire
[20:23] <amell> lol
[20:24] <sgtburned> Haha
[20:24] <amell> doesnt look like he has it yet
[20:24] <sgtburned> Corn Field... Nice, You can locate it with all the smoke as well
[20:24] <Upu> no those trees looks shrubby
[20:24] <amell> no smoke when it lands
[20:24] <LeoBodnar> put it in stationary mode when speed drops
[20:24] <Upu> predicting a wet daveake
[20:24] <craag> amell: The easiest thing is just have a high refresh rate, so you can get a few locations and take a visible mean
[20:24] <Upu> you can actually
[20:24] <Upu> this is in pedestrian mode
[20:24] <sgtburned> amell: Fine, Attach a small rocket that when its been at the same alt for 5 mintues it fires... :)
[20:24] <Upu> deviation is low
[20:25] <amell> i was planning to just display received coords on a LCD. i think i will think again on that
[20:26] <LeoBodnar> at that range people usually DF
[20:26] <sgtburned> YES
[20:26] <sgtburned> They have it!
[20:26] <craag> amell: You could have a button to activate a rolling mean
[20:26] <Upu> looks promising
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[20:26] <sgtburned> Now hes running off with it like a giddy girl
[20:26] <jededu> Good job :)
[20:27] <sgtburned> Congrats
[20:27] <Lunar_Lander> evening
[20:27] <sgtburned> jededu: If it is my code that went tits up... Don't tell me, I'd rather die
[20:27] <sgtburned> evening Lunar_Lander
[20:27] <bertrik> it's pretty dark here (netherlands) already, so just in time to find it I guess
[20:28] <jededu> Im sure its fine
[20:28] <LeoBodnar> are you high on dang sgtburned ? XD
[20:28] <sgtburned> dang?
[20:28] <amell> whats the payload condition? is the rpi full of rain or something?
[20:29] <Upu> he's got it all back
[20:29] <LeoBodnar> that sheep shit you fell in
[20:29] <Upu> the ball was on the ground jededu
[20:29] <Upu> balloon remains on the ground
[20:29] <Upu> the Pi was up the tree
[20:29] <jededu> Could be is was in it for 3 hours
[20:29] <Upu> with the parachute
[20:29] <Upu> but he's managed to get it all
[20:29] <Lunar_Lander> rainstorm with your area too?
[20:29] <Upu> though you may need to pay for his dry cleaning
[20:29] <Lunar_Lander> had pretty heavy rain in the afternoon
[20:29] <Upu> as he's now very wet
[20:29] <sgtburned> LeoBodnar: xD Dude, Its all up my leg. Trousers in wash now
[20:29] <jededu> Cool np :)
[20:30] <Lunar_Lander> daveake, where is your recovery photo of yours in the bushes? :D
[20:30] <LeoBodnar> I read it as direct order! [21:29] <Upu> balloon remains on the ground
[20:30] <Upu> lol
[20:30] <Lunar_Lander> xD
[20:30] <jededu> Good backup tracker saved the day
[20:31] <Upu> yeah I'll be interested to see what it looks like after it got soaked
[20:31] <Lunar_Lander> what was on the balloon? you said raspi and backup tracker, what were the specs?
[20:31] <LeoBodnar> that wet photo was somebody else's payload as well
[20:31] <Upu> yeah it was mine
[20:32] <Upu> I decided to give it up and went home
[20:32] <Upu> Dave had other plans
[20:32] <LeoBodnar> Dave "the Hound"
[20:32] <Upu> lol
[20:33] <Lunar_Lander> xD
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[20:35] <jededu> Lunar_Lander it was a pi model b i think it overheated died after 2.5 hours at 50+ deg
[20:35] <Upu> they can take more than that
[20:35] <craag> Erm I have pis in boxes at ~70 24/7
[20:36] <sgtburned> craag: Possibly the 99% humidity it was in then...
[20:36] <jededu> The board temp is recorded on the sd that was the internal air temp
[20:36] <Upu> its more likely to be the bucket of water that caused the issue
[20:36] <craag> Yeah if water got in..
[20:36] <Upu> well pretty sure thats what happened with the backup
[20:36] <sgtburned> Water from the balloon dripping down the cable onto the RPi and Backup?
[20:36] <Upu> as they have nothing in to reboot
[20:36] <Lunar_Lander> jededu, ah
[20:36] <Upu> and if you fitted the battery clips its unlikely to be the battery falling out
[20:36] <LeoBodnar> floating point error
[20:37] <Upu> and if it did fall out its certainly didn't fall back in
[20:37] <Lunar_Lander> yea I also got 50°C with a canon powershot, arduino, v-reg and some other parts
[20:37] <sgtburned> SD Card fell out?
[20:37] <Lunar_Lander> in a ground test
[20:37] <sgtburned> Would explain the GPS and stuff working but PI not responding
[20:37] <jededu> Clips were on sd is taped
[20:37] <sgtburned> Ahh
[20:37] <sgtburned> Strange one... We will find out eventually.
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[20:38] <LeoBodnar> chemtrails stuff shorted Pi
[20:38] <jededu> Thanks to daveake we may find out
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[20:39] <sgtburned> LeoBodnar: Then the aliens picked it back up and powered the backup up for us?
[20:39] <amell> you should write this flight up. interesting one.
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[20:41] <sgtburned> amell: Its definitely going on our website for sure...
[20:48] <sgtburned> craag: This is essentially your Regex matching. http://i.imgur.com/YhLhUnY.png
[20:49] <sgtburned> Fixed it but I am just checking some other stuff. Pushing tonight if you want.
[20:52] <craag> sgtburned: Stick it in a pullreq :) As I said before I never envisaged any madmen using decimal ft
[20:52] <sgtburned> Haha
[20:52] <sgtburned> Will do
[20:53] <sgtburned> Accuracy my friend.
[20:53] <craag> And it was specifically designed for 'muricans talking about 10,000 ft
[20:53] <SIbot> In real units: 10,000 ft = 3048 m
[20:53] <sgtburned> Also matches if they decide to do 9.ft or 9.feet
[20:53] <craag> *habs at 10,000 ft
[20:53] <SIbot> In real units: 10,000 ft = 3048 m
[20:54] <amell> did someone call me a madman?
[20:54] <craag> yep
[20:54] <craag> me
[20:54] <craag> what'ya gonna do?
[20:54] <amell> drop a balloon on yer ead/
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[20:56] <craag> bring it on :D
[20:57] <aadamson> anyone bought boards from hackvana - looking for feedback on quality, alignment, silkscreen, etc?
[20:57] <sgtburned> craag: Instead of [0-9] you can also do [\d] and also do you not use grouping? ( )
[20:58] <craag> sgtburned: I only learned about regex grouping recently :P that was the first regex I'd ever written
[20:58] <craag> Never had reason to use it before
[20:58] <sgtburned> Ahh okay. Fair enough :). Great website to use is pythex.org
[20:58] <craag> But have found so many reasons since :D
[20:58] <craag> AH cheers
[20:58] <sgtburned> I think I use about 40 regex's in the software I made earlier this year to catch lots of commands
[20:59] <sgtburned> The winning regex is ([\d]*[.]?[\d]*)f[e]{0,2}t
[20:59] <craag> does that handle 10,000 ?
[20:59] <craag> with the comma?
[21:00] <sgtburned> That is seperate
[21:00] <craag> ah ok
[21:00] <craag> cool thanks :)
[21:00] <sgtburned> One sec. Let me run it through again
[21:01] <sgtburned> ([\d]*[,]?[\d]*[.]?[\d]*)f[e]{0,2}t
[21:01] <sgtburned> There we go :)
[21:03] <sgtburned> sent pull request.
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[21:04] <amell> does it handle ½ and ¼?
[21:06] Jed_edu (~Jededu@host109-152-13-76.range109-152.btcentralplus.com) joined #highaltitude.
[21:06] <sgtburned> amell: Nope just floats. Crazy people are already crazy for asking for float ft anyway
[21:07] <sgtburned> Want to be accurate, Use metric!
[21:07] <amell> 6
[21:07] <amell> 54
[21:07] <amell> see.
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[21:12] <craag> 10.001 ft
[21:12] <SIbot> In real units: 10 ft = 3.05 m
[21:12] <craag> 10.5 ft
[21:12] <SIbot> In real units: 10 ft = 3.05 m
[21:13] <craag> 1.5 ft
[21:13] <SIbot> In real units: 1 ft = 0.30 m
[21:13] <craag> heh parseInt
[21:14] <daveake> Home
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[21:15] <Lunar_Lander> wb daveake
[21:15] <daveake> sgtburned/Jed_edu: Do you want me to do anything to these payloads other than leave them running?
[21:15] <daveake> Pi camera still flashing
[21:15] <DL7AD> 3kt
[21:15] <DL7AD> 3 knots
[21:16] <DL7AD> 3 miles
[21:16] <DL7AD> does not work
[21:16] <jededu> Thanks for recovering dave
[21:16] <DL7AD> evening btw
[21:16] <amell> is there any water in the rpi payload?
[21:16] <daveake> np
[21:16] <daveake> Let me know what you want done with it
[21:17] <jededu> disconnect batts if you like check for water damage
[21:17] <daveake> ok
[21:17] Action: amell advises daveake not to get undressed in front of payload.
[21:18] <daveake> Yes I already saw the camera LED flashing :p
[21:18] <jededu> If its still flashing the software is still running its in the main code
[21:18] <SIbot> In real units: null ft = NaN m
[21:18] <jededu> Odd
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[21:19] <amell> jededu: tx in water but rpi ok?
[21:19] <daveake> FMR it's warm in there
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[21:20] <craag> 1.5 ft
[21:20] <SIbot> In real units: 1 ft = 0.30 m
[21:20] <craag> :/
[21:21] <daveake> 12.55V from battery pack
[21:21] <daveake> Pi is running - still taking pix
[21:21] <jededu> Not that then
[21:21] <sgtburned> Software is running...
[21:21] <SIbot> In real units: null ft = NaN m
[21:21] <craag> Ah sgtburned, haven't updated the extraction regex, just the test
[21:22] <jededu> It is
[21:22] <amell> how is pi connected to radio?
[21:22] <craag> And sgtburned, it doesn't like full stops....
[21:22] <sgtburned> lol really?
[21:22] <amell> hey...
[21:22] <craag> ...
[21:22] <amell> .
[21:22] <daveake> Quite damp inside backup ball
[21:22] <sgtburned> Ouch
[21:23] <jededu> TX pin
[21:23] <craag> ah
[21:23] <sgtburned> daveake: Thanks for what you have done. We sure as hell are not going to forget you!
[21:23] <craag> gksdfjjfsldkj ft
[21:23] <SIbot> In real units: null ft = NaN m
[21:23] <craag> sgtburned: ^^
[21:23] <sgtburned> HAHA
[21:23] <sgtburned> dude, check if there is actually a unit
[21:23] <amell> why wasnt the pi payload transmitting though?
[21:23] <craag> I've gotta run out, will shut it off for now and look another time ;)
[21:23] <amell> thats the open question for me
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[21:24] <jededu> No idea
[21:24] <jededu> Yet
[21:24] <amell> antenna still connected?
[21:24] <daveake> Backup tracker is actuall
[21:24] <daveake> y wet
[21:24] <amell> wondered if it lost its wire
[21:24] <jededu> Dave is on the case
[21:24] <daveake> Main payload is bone dry inside
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[21:25] <daveake> Any moisture would have evaporated
[21:25] <sgtburned> Error log should post something and dmesg
[21:25] <daveake> Main tracker aerial intact and tightly connected
[21:27] <ibanezmatt13> Torro has tweeted this about reports of funnel clouds today: http://pbrd.co/1ngybic <- They're like mini tornadoes; could explain the oscillation?
[21:27] <sgtburned> Pi Should have LOTS of photos ;D
[21:27] <Upu> thats interesting ibanezmatt13
[21:27] <sgtburned> We tested the software for like 3 days straight though... Strange
[21:28] <daveake> Want me to run up the SD card in a Pi and get some pix for you?
[21:28] <ibanezmatt13> yep, tornados suck things up and throw them out again in a way Upu
[21:28] <sgtburned> daveake: I would love you if you did.
[21:28] <jededu> Can do
[21:28] <Upu> reply to him with a link to the tracker
[21:28] <sgtburned> Send to Jed first though, He's done most of the work :)
[21:28] <ibanezmatt13> ok
[21:28] <daveake> ok will do
[21:28] <mfa298> dmesg won't show much after a reboot. but I'd hope anything useful is logged to a file
[21:29] <daveake> It won't delete photos on bootup or anything else like that will it?
[21:29] <sgtburned> hoping mfa298 Even had custom error logging to "ErrorLog.txt" hoping it wasn't Python failure for something we didn't accoutn for
[21:29] <lz1dev> ft
[21:29] <sgtburned> daveake: Shouldn't do. The pictures are oredered in time.
[21:30] <sgtburned> lz1dev: He has turned off SIBot :)
[21:30] <daveake> cool
[21:30] <lz1dev> ah true :)
[21:30] <daveake> I've unplugged everything and I'll run it up on my network sans camera and board
[21:30] <daveake> Not 100% sure I didn't loosen it, but that expansion board was loose before I pulled it
[21:31] <jededu> That would make sense
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[21:33] <daveake> OK Pi booting up
[21:34] <ibanezmatt13> Upu http://www.jetplan.com/jeppesen/weatherServlet?&action=show&graphicType=wxMapPrevG&img=eutball12.gif:14:eutb:.gif:400,350,300,250,200,upr,low,all:400-450,350-400,300-350,250-300,200-250,350-450,200-350,200-450:200:12,18,24:12,18,24
[21:34] <daveake> What's the hostname for this Pi ?
[21:34] <Upu> interesting
[21:34] <ibanezmatt13> severe turb in Kiderminster area
[21:34] Action: daveake goes scanning IP addresses
[21:35] <sgtburned> daveake: raspberrypi
[21:35] <daveake> tried that
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[21:35] Nick change: [1]Geoff-G8DHE-M -> Geoff-G8DHE-M
[21:35] <sgtburned> Plug a monitor in :)
[21:35] <daveake> meh
[21:35] <sgtburned> or even just a USB serial cable to a laptop
[21:36] <mfa298> you can plug monitors into pi's ?
[21:36] <daveake> So I've heard
[21:36] <sgtburned> HDMI
[21:36] <amell> sure you can
[21:36] <daveake> OK got it where do I look?
[21:36] <jededu> EduHab
[21:36] <sgtburned> dump /var/ to somewhere and then check /home/pi/EduHab
[21:36] <jededu> All in there
[21:37] <daveake> no samba installed?
[21:37] Action: amell looks forward to the pics of shocked shoppers on malvern high street.
[21:37] <daveake> I see jps
[21:37] <jededu> No or vnc
[21:37] <daveake> jpgs
[21:37] <mfa298> meh, composite is easier. I can plug a few of them into the matrix switch then and have it display on a choice of screens
[21:38] <sgtburned> nice, Any of them good? Check the ones at around 6pm
[21:38] <jededu> I use WINscp
[21:39] <daveake> There will now be a short pause of a week or two whilst my internet uploads this lot
[21:39] <jededu> ibanezmatt13 right on the flightpath
[21:39] <jededu> lol :)
[21:39] <sgtburned> daveake: If you upload /var/ somewhere I can check it over night :)
[21:39] <ibanezmatt13> yep jededu, I think it's one of the more plausible arguments so far. We'll see what Torro say :)
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[21:47] <daveake> http://imgur.com/Tka6GQ0
[21:47] <Upu> thats cloudy
[21:47] <daveake> 2nd shot after launch
[21:47] <daveake> the rest are just cloud
[21:47] <daveake> 50 shades of gray
[21:48] <arko> hahaha
[21:48] <jededu> Next time :)
[21:48] <sgtburned> Rest of them?
[21:48] <sgtburned> :(
[21:48] <arko> nice daveake
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[21:48] <daveake> Either views of clouds, or just gray
[21:48] <sgtburned> Aww Thats a shame
[21:49] <Lunar_Lander> XD!
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[21:50] <jededu> The log.txt file should have captured the sensor data if it worked
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[21:51] <sgtburned> and position :)
[21:51] <jededu> Yes even if it diddnt transmit :)
[21:51] <Lunar_Lander> which sensors?
[21:52] <daveake> http://justpaste.it/fqmu
[21:52] <KF7FER> So I know my timing is still bad but... I've been working on this Si4464 board based on KT5TK's work and I was hoping I could get a bit of feedback...
[21:52] <KF7FER> https://dl.dropboxusercontent.com/u/8240668/Review/unRadio_sch.png
[21:52] <KF7FER> https://dl.dropboxusercontent.com/u/8240668/Review/unRadio_brd.png
[21:52] <KF7FER> https://dl.dropboxusercontent.com/u/8240668/Review/unRadioEagle.zip
[21:53] <jededu> BMP085, HTU21D
[21:53] <LeoBodnar> no seq#?
[21:53] <LeoBodnar> why?
[21:53] <sgtburned> seq?
[21:54] <Lunar_Lander> line number
[21:54] <LeoBodnar> oh it's after the time
[21:54] <sgtburned> 2 Number = Count
[21:54] <jededu> You are safe for now burned
[21:54] <Lunar_Lander> oh
[21:54] <sgtburned> jededu: For now...
[21:54] <jededu> lol
[21:54] <sgtburned> We needed that Handler program to be fair
[21:54] <sgtburned> BLAME IT ON TONY
[21:54] <sgtburned> I AM TOO YOUNG FOR THIS
[21:54] <LeoBodnar> it did shut down for 5 hours
[21:54] <sgtburned> Kept logging :)
[21:54] <sgtburned> So not software... I hope
[21:55] <sgtburned> Oh wait
[21:55] <sgtburned> Yeah
[21:55] <sgtburned> 5 Hours
[21:55] <sgtburned> xD
[21:56] <sgtburned> Two 0 counts? I reckon double boot
[21:56] <Lunar_Lander> sgtburned, please interprete string data content
[21:56] <Lunar_Lander> KF7FER, nice!
[21:56] <jededu> Thats when it stopped on the map
[21:56] <sgtburned> Right okay... Lets roll
[21:57] <sgtburned> Ahh Okay.
[21:57] <sgtburned> So it didn't boot... Strange
[21:57] <jededu> But second time it did
[21:57] <sgtburned> Hmm
[21:58] <sgtburned> So program crashed?
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[21:58] <sgtburned> Could have been the addon board shorting something... Yeah lets blame that
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[21:59] <amell> no pics at low level when it bounced down to earth?
[22:00] <sgtburned> We will have to wait for either SD card image to be uploaded or... for peoples to upload image
[22:01] <KF7FER> Lunar_Lander thanks - I've got one errant power line to route (ugly!) but the rest is ground and I don't think a single pour is correct here
[22:01] <daveake> The pix are either in cloud so various shades of gray, or are like this: http://imgur.com/1JTK1Ke
[22:02] <Lunar_Lander> oh ok
[22:02] <daveake> Some show falling raindrops
[22:03] <Lunar_Lander> please show the raindrops!
[22:03] <amell> no clear pics above cloud like when it was at 22K?
[22:03] <sgtburned> Hm Wondering that too
[22:03] <daveake> no none
[22:04] <sgtburned> Thats a shame :(
[22:04] <jededu> Lunar_Lander
[22:04] <jededu> callsign, time, counter, latitude, longitude, satellites, int(flightmode), altitude, temp, humidity, temp2, pressure2, alt2, temp3, temp4, cutdown
[22:04] <daveake> OK, launch photo is IMAGE_Jun_03_2014--11-43-00.jpg
[22:04] <daveake> and the last one is IMAGE_Jun_03_2014--15-20-00.jpg
[22:04] <sgtburned> Ahh okay... Strange
[22:04] <amell> ooh, whats happened to the pics after 15.20
[22:05] <sgtburned> Thats when it rebooted
[22:05] <fsphil> so it never left the cloud layer?
[22:05] <daveake> Next one IMAGE_Jun_03_2014--15-21-00.jpg is invalid
[22:05] <sgtburned> OH!
[22:05] <sgtburned> Possible it shut down during taking a picture?
[22:05] <amell> sgtburned: did you have the image capture program in the boot script?
[22:05] <sgtburned> It was an all in one..
[22:05] <sgtburned> Should have taken a picture, returned to main loop
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[22:06] <Lunar_Lander> thanks jededu
[22:06] <amell> oh well, you got it back, so thats the main thing. fly again
[22:06] <sgtburned> yeah :) Thanks to daveake
[22:06] <jededu> On the 18th
[22:06] <sgtburned> and of course everyone tracking and jededu
[22:06] <Lunar_Lander> can you say what sensors you had on for p, T and U?
[22:06] <Lunar_Lander> U = humidity
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[22:07] <sgtburned> humidity was an I2C HTU21D
[22:07] <sgtburned> same for the temp to the left IIRC
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[22:08] <mfa298> I've had a few instances of my python script locking up when trying to take an image needing a reboot to fix. although I never worked out the underlying issue
[22:08] <mfa298> happened at random and reboot fixed it
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[22:08] <Lunar_Lander> daveake, the pasting site you used is very handy
[22:08] <Lunar_Lander> thanks! :)
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[22:09] <daveake> btw the balloon weighed approx 700g including some water
[22:09] <daveake> So approx half of it came back down
[22:09] <sgtburned> mfa298: If you take a picture and quit it / get an error that causes it to pause / fail to write. It wont close the buffer.
[22:10] <Lunar_Lander> thanks sgtburned
[22:11] <mfa298> sgtburned: this was using picamera and occasionally I'd get these freeze ups. Just wondering if your code was single threaded like that whether you had something similar
[22:11] <sgtburned> Single Threaded.
[22:11] <sgtburned> Send signal -> Take Picture -> Return
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[22:12] <mfa298> I only saw this issue a few times (<10) over 80+ pis running the same code taking images pretty regularly.
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[22:12] <sgtburned> Yeah
[22:12] <sgtburned> Ill try and get the exact error that will cause it
[22:12] <sgtburned> Also python garbage collection = Pain in the ass
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[22:14] <mfa298> with unlimited time I'd probably have re-written this stuff in multithreaded C/C++ but camera from python is easy.
[22:15] <sgtburned> mmal: main: Failed to create camera component That error is when you Ctrl+C / exit, Next time you take a photo it will come up with the same error and is fixable by a restart
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[22:16] <mfa298> my stuff was all in python using picamera and I never got any errors just the process hanging.
[22:16] <sgtburned> Hmm strange
[22:16] <sgtburned> Still got the code? I can take a look at it if you want
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[22:16] <mfa298> I think I saw the same thing with raspistill -v it started setting things up and just hung
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[22:18] <mfa298> my best guess is something corrupting a bit of memory. Or possibly just issues with SD card corruption - I seemed to be re-flashing them on a regular basis when they'de all been turned off over a weekend
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[22:19] <mfa298> could also have been a slightly dodgy connection maybe just disconnecting as something got cold.
[22:19] <fsphil> I've not had a corrupt SD card in ages
[22:20] <fsphil> but two or three different Pis that just crash after a few days
[22:20] <mfa298> I'm just wondering if you had something similar where an attempt to take a picture caused something to hang.
[22:20] <sgtburned> mfa298: Had it a lot. could be possible but, Seems to be a reboot gone bad
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[22:22] <mfa298> I think most of the SD card corruption is probably related to a sudden loss of power a few months ago. In several cases I had a few boots that required prodding before it finally failed to boot
[22:22] <mfa298> compute module for that project would probably have made a lot of sense.
[22:22] <fsphil> I'd suggest setting FSCKFIX=yes in /etc/default/rcS
[22:22] <sgtburned> mfa298: Running anything else?
[22:22] <sgtburned> SPI?
[22:22] <fsphil> if the Pi reboots and does an fsck, it doesn't sit waiting on the user pressing the y key
[22:23] <mfa298> sgtburned: this is comercial non hab project so nothing much else just camera, pi and network
[22:23] <sgtburned> Strange
[22:24] <mfa298> as I said before it was a rare occurance
[22:25] <mfa298> probably under 10 instances, across 80 pis and a couple of month and captures every few seconds (using the video port)
[22:26] <mfa298> fsphil: this seemed to be corruption in the fat partition so didn't get the firmware
[22:26] <daveake> Pic from the recovery http://imgur.com/LIv5TWO,vhrwl26,p6y0oFE,cN11qex,PVBfEIg,BvxvFv1
[22:26] <fsphil> that's an odd one mfa298
[22:27] <daveake> Sorry about the rotation; this photo editing program removes the rotation flag in the jpeg
[22:27] <daveake> It landed between power lines, a road and a railway line
[22:27] <daveake> Lucky
[22:27] <fsphil> it's the right way up here
[22:28] <daveake> There are 6 images only 1 is the right way up :)
[22:28] <fsphil> oh, I keep missing the tiny links at the top
[22:28] <daveake> yes they're very tiny
[22:28] <fsphil> lots of balloon
[22:28] <mfa298> the noobs (uSD in a carrier) card seemed to be worse for this. I think it's down to environment (cold, dusty) and this random sudden loss of power a couple of months ago - I don't think I had to re-flash a card a 2nd time.
[22:28] <daveake> yeah more than half of the original
[22:29] <fsphil> a Pi with onboard flash would be super good
[22:29] <fsphil> the new module doesn't count
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[22:31] <mfa298> I wonder how hard it would be to make a eMMC flash chip carrier that could be soldered onto a pi board in place of the SD card slot.
[22:31] <amell> wow. thats a lot of balloon
[22:31] <daveake> 700g
[22:31] <daveake> including rain
[22:32] <amell> tbh, surprised chute stays the right way up with all that latex pulling on it.
[22:34] <Laurenceb> mfa298: check out the Rpi compute module
[22:34] <fsphil> compute is just a cpu+flash
[22:35] <fsphil> would have to then make a board with ethernet/power/everything else
[22:35] <mfa298> Laurenceb: I was working with fsphils requirements: 23:29 < fsphil> the new module doesn't count
[22:35] <fsphil> if I was going to make a board from scratch I'd just put a microcontroller on it
[22:36] <mfa298> I've already started looking at the compute module as an idea for something I've been working on
[22:36] <Laurenceb> Rpi has the advantage of camera interface
[22:36] <Laurenceb> Mipi on a µC is next to impossible to find
[22:37] <mfa298> compute board only really makes sense if you want lot of the same thing (or close enough that you can do a single board)
[22:38] <Laurenceb> or a Mipi camera :P
[22:38] <fsphil> can an stm32 be made to talk to a CSI camera?
[22:38] <Laurenceb> no
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[22:39] <fsphil> shame
[22:39] <fsphil> that would've been handy
[22:42] <Laurenceb> not as handy as a G.U.I. in visual basic to track an ip address
[22:42] <mfa298> it sounds like there's nothing too complex about the CSI bus apart from the fairly high bandwidth and then the processing requirments to get from raw data to something useful
[22:42] <fsphil> fpgaftw
[22:42] <Laurenceb> the complex thing is that it needs custom silicon and that needs to be licensed
[22:43] <Laurenceb> aiui you would still need PHY
[22:44] <mfa298> from the bits I've seen theres a set of lanes running at 1gpbs (2 lanes used on the current PiCam) and i2c for configuring things
[22:45] <mikestir> there are plenty of camera modules with raw interfaces
[22:45] <mikestir> or not even modules, just plain image sensor chips
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[22:46] <mfa298> on the Pi the tricky part is that the processing happens on the GPU using a propietry blob. You can so the same processing in software but it's horribly slow
[22:47] <mikestir> don't use a pi then
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[22:48] <fsphil> I've a camera module for an stm32f4 discovery board. probably be 2016 before I figure it out :)
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[22:48] <mikestir> I've still got those mt9d131 boards to play with. they can spit out jpeg over a parallel bus
[22:49] <mikestir> can't see me having time to play with those for a while though either
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[22:49] <fsphil> handy
[22:49] <fsphil> slow enough and few enough pins for an avr?
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[22:49] <daveake> nn all I need to go get some sleep
[22:49] <daveake> and dry out
[22:49] <daveake> :/
[22:49] <fsphil> eek
[22:49] <mikestir> not sure how slow you could run it
[22:49] <fsphil> g'nite!
[22:49] <daveake> (I kid)
[22:50] <daveake> Dried out on the way home
[22:50] <daveake> btw the 2 chase cars were the car PC and the Pi
[22:51] <fsphil> I must remember to pack an umbrella next time I'm chasing
[22:51] <fsphil> or a wet suit
[22:52] <lz1dev> and add "HAB Recovery Service" on the side of your car
[22:52] <jededu> daveake nice setup
[22:53] <fsphil> phone-a-hab
[22:54] <jededu> was it still raining when you left
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[23:10] <Laurenceb> is there a way to access companies house information for free?
[23:11] <SpeedEvil> you can get a lot of it free
[23:11] <SpeedEvil> http://wck2.companieshouse.gov.uk//wcframe?name=accessCompanyInfo
[23:12] <Laurenceb> i can find the comany and stuff
[23:12] <Laurenceb> but then i need to sign in
[23:12] <Laurenceb> can you sign in and get stuff for free?
[23:13] <SpeedEvil> Hmm
[23:13] <SpeedEvil> I may have been thinking of the charity commission
[23:13] <SpeedEvil> a pound a document
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[23:41] <aadamson> Laurenceb, you still here? what is the programming connector called that plugs into holes to hold it?
[23:43] <aadamson> nevermind, found it ... tag-connect
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[23:53] <KF7FER> I would have guessed pogo pin but <shrugs>
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[23:53] <KF7FER> but I guess they don't plug, you just hold them
[23:59] <aadamson> pogo's yes, but tag-connect has both a legged and non-legged version
[00:00] --- Thu Jun 5 2014