highaltitude.log.20150416

[00:00] <SpacenearUS> New vehicle on the map: 03N8ERF-5_chase - 12http://tracker.habhub.org/#!qm=All&q=N8ERF-5_chase
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[00:10] <KF5WYX> ok, does anyone have a sample APRS~AX.25 packet in binary, or source (hex/bin)? I'm convinced my packet is sound, but my tnc is not decoding it, so I am looking for a known working sample to tx.
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[00:45] <kemfic> hi
[00:46] <eroomde> hi
[00:47] <kemfic> I want to get a ham license
[00:47] <kemfic> Will one day's study be enough for a techinichans license
[00:47] <kemfic> technichian's*
[00:48] <Ian_> Hi kemfic, I think that's definitely a good idea, but with one day to go to the exam(?) do you not have to book an exam?
[00:48] <kemfic> Walk ins are allowed in the place i'm going for an exam
[00:49] <Ian_> Make a program of things you need to do, but you are not likely to achieve zero to HAB launch status in under seven days unless you are extremely gifted.
[00:49] <kemfic> i have until the 27th
[00:49] <Ian_> OK on the walk in. The problem is often that it's new concepts that you are looking at and concepts are often not so much learned as accommodated, it takes a little time to sink in
[00:50] <kemfic> I need to launch it as soon a possivle
[00:50] <kemfic> ok
[00:50] <kemfic> i wanted to make it to gsbc so yeah
[00:51] <kemfic> what tracking device do you recommend other than sdr
[00:51] <Ian_> I don't want to discourage you, but gsbc is an annual event. Learn all you can this time and if you can get a tracker on someone elses balloon as a second string that's good but aim at next year. for your own solo flight.
[00:52] <kemfic> I have a team working with me
[00:53] <Ian_> I gather that your team are mainly spectators. Separate the responsibilities and delegate. That will take the smile off a few faces, teach you a few new tricks and make sure that they start doing their research.
[00:54] <Ian_> SDR + LNA + antenna + laptop or Raspberry Pi for a stand alone receive facility
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[00:55] <Ian_> How many in your team and how many jobs? You seem to be looking at a tracker and Ham licence. Only you can tell if you can suck up the info before the exam.
[00:55] <kemfic> oh
[00:55] <kemfic> well, the spectator part is true
[00:56] <Ian_> Get the other jokers to accept areas of responsibility. Regulations, ground station tracking etc. You won't make the gate for this year I believe and your team mates will /
[00:56] <kemfic> Are there any good Iridium products?
[00:57] <kemfic> ok
[00:57] <Ian_> have a bit of a smirk, but if they have been given specified tasks, they will likely fail, so you can waggle the big stick at them and tell them how they didn't measure up. Next year you will have a team that understands a little better
[00:57] <kemfic> ok
[00:58] <Ian_> Don't let them sit on their butts until then of course. Speak to your HeadMaster who seems to have put you in a bit of a corner and say that this year is the dry run. At least he will understand that you are thinking seriously about what is achievable in the limited time.
[00:59] <kemfic> my principal really wants my team to send one this year, because we had like 4 other teams and they do not have any intellectual capability
[00:59] <kemfic> just by looking at them you can tell
[01:00] <Ian_> Iridium is too expensive. SPOT and GSM are a bit of a 50% lottery. radio is the way to go and taken slowly in stages this is the place where you will get tutured, but FOCUS.
[01:02] <Ian_> The other teams have no intellectual capability, but you don't have the experience yet. Build your team. Specity their individual areas of responsibility and demand progress reports even if verbal.
[01:02] <kemfic> ok
[01:02] <kemfic> So you are saying that radio tracking is the way to go
[01:02] <kemfic> Is PITS reliable
[01:03] <Ian_> You will develop management skills, good or bad, and your principal will see that you are taking a positive route.
[01:03] <kemfic> ok
[01:03] <kemfic> we have a 600 dollar budget
[01:04] <Ian_> I think so. Upu and daveake produce it, but I know very little. I believe earlier that one of the two said that they have an APRS option, which is probably the best option in the US.
[01:04] <kemfic> we have 400 left because we have the parachute and the balloon, and helium
[01:04] <kemfic> well we separated the money for the helium
[01:05] <craag> Any radio tracker does require effort and testing to make sure that it is reliable in your setup.
[01:05] <kemfic> ok
[01:05] <kemfic> any ideas for an experiment?
[01:05] <craag> But yes, the PITS is reliable. It hasn't had a failure that I know of that hasn't been down to lack of user testing.
[01:06] <craag> or the user connecting it the wrong way up....
[01:06] <Ian_> That said, once you are in descent mode and below a certain altitude, then it might be good to be transmitting more frequently than APRS allows, so that you can track it with a yagi in the final mile
[01:07] <craag> experiment - you could look at the change in UV radiation as you go up through the atmosphere
[01:08] <Ian_> You have $400 left. Facts: The gas is going to be used, the balloon is going to burst, so what you want to do is spend the rest of your budget pretty much on items that you will still have at the end of the project, for the next one!
[01:08] <craag> or you could use the live pictures from the pits to watch what happens to a marshmallow.
[01:08] <kemfic> yeah
[01:10] <Ian_> I see a lot of PITS questions, but they are all coming from people who have no HAB, radio or electronics experience and that isn't an easy ask. I expect that one day Davake is going to choke on a bacon butty with some of the questions that he gets.
[01:10] <kemfic> I was thinking about measuring the spectrum of the sun up there and comparing it with the spectrum here
[01:10] <craag> kemfic: good one :)
[01:11] <kemfic> brb
[01:12] <Ian_> Too many people have decided that the PITS is a no brainer and they are making heavy water of it. It was designed for the school science teacher who just doesn't have the time or resouces to get a six week project off the ground for a class and build the gear himself.
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[01:12] <Ian_> Understanding is the key.
[01:12] <Ian_> Up late tonight craag, holiday?
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[01:25] <kemfic> im back
[01:27] <Ian_> It's 0230 in the UK and I'm off to bed. Cram for the Ham - goal #1 win or fail (you can do it again) you should set out your goals and put some fear into your spectators to make them active team mates.instead of hangers on.
[01:27] <Ian_> Gnite Boss, see you tomorrow.
[01:28] <kemfic> ok
[01:28] <Ian_> :)
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[01:39] <esculca> hi guys!
[01:39] <esculca> looking for some help on RFM98
[01:39] <esculca> managed to get it to work in Lora mode
[01:40] <esculca> but somehow I cannot get it to work in FSK mode
[01:40] <esculca> anyone has tried it?
[01:40] <esculca> tried oversampling
[01:40] <esculca> but it doen't work
[01:40] <esculca> well,I must be doing something wrong, for sure
[01:43] <esculca> well, I guess everyone's sleeping
[01:43] <esculca> I m the only one awake
[01:43] <esculca> :)
[01:43] <SpacenearUS> New position from 03PS-42 after 037 hours silence - 12http://tracker.habhub.org/#!qm=All&q=PS-42
[01:45] <kemfic> i'm awake its 6:45 pm
[01:46] <esculca> :)
[01:46] <esculca> have you tried the rfm98 modules?
[01:47] <kemfic> no
[01:47] <kemfic> i have like no experience
[01:47] <kemfic> i never tried communications and tracking
[01:47] <esculca> oh ok
[01:47] <kemfic> thats why im on this irc
[01:48] <esculca> you should try building your own
[01:48] <esculca> lot's of fun & headache
[01:48] <esculca> :)
[01:48] <kemfic> i haven't even started yet and i have one
[01:48] <kemfic> a headache
[01:49] <kemfic> i want to do gsbc
[01:49] <esculca> I have already sent some
[01:49] <kemfic> but i don't know anything radio
[01:49] <esculca> don't worry, take your time
[01:50] <kemfic> i want a license, and the next session is tomorrow, i either have to cram or forget it
[01:50] <esculca> it's not just just the destination, it's about the journey
[01:50] <esculca> licesne for what?
[01:50] <kemfic> do you think a phone, a GSM tracker, and a spot is sufficient
[01:50] <kemfic> techinchians license
[01:50] <esculca> i never used any of those
[01:50] <esculca> always built my own electronics
[01:51] <esculca> but for what I read the spot is very efficient
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[01:52] <kemfic> i wanted to use a PITS, but 434 Mhz requires a license in the US
[01:52] <esculca> 434?
[01:53] <esculca> don't think so
[01:53] <esculca> but I am not in the US
[01:53] <esculca> I believe 434 is free almost everywhere
[01:53] <kemfic> everywhere in europe and africa
[01:53] <esculca> what is the available frequency over there?
[01:54] <kemfic> almost everywhere excluing 4 continents
[01:54] <adamgreig> kemfic: tech licence exam is not that hard
[01:54] <adamgreig> you get two chances at it
[01:54] <adamgreig> multiple choice
[01:54] <adamgreig> if you just go through a handful of example questions and learn the answers between now and then you can probably do it
[01:54] <kemfic> ok thx
[01:54] <adamgreig> i recommend https://hamstudy.org/
[01:54] <esculca> okay
[01:54] <adamgreig> I mean, you get two chances at it in the same exam session, back to back
[01:55] <esculca> well guys, gotta go to sleep
[01:55] <adamgreig> pass mark is not that high (can't remember what exactly) and not that many questions
[01:55] <esculca> it's late in here
[01:55] <adamgreig> worth a shot I think
[01:55] <esculca> good luck
[01:55] <kemfic> 25
[01:56] <kemfic> no, 26
[01:56] <kemfic> yeah, ill need it for the launch
[01:56] <adamgreig> though if you do know any other hams you might find one of them lets you use their callsign (and thus licence) for the launch
[01:56] <kemfic> i know none
[01:57] <kemfic> how many hours of study?
[01:57] <adamgreig> it depends a bit on how much you already know about radio and how good you are at guessing things
[01:58] <kemfic> i can guess, but not on radio
[01:58] <adamgreig> if you know nothing about radios and have never thought about them then you might be in for a hard time
[01:58] <kemfic> i tried on hamstudy
[01:58] <kemfic> yeah
[01:58] <adamgreig> and perhaps need a bit more in the way of structured study guide than hamstudy
[01:58] <kemfic> at least i know moderate electronics
[01:58] <adamgreig> maybe ask your local club (wherever you're taking the test?) if they have any recommendations
[01:58] <adamgreig> hmm, some of it is electronics but probably not enough to pass :p
[01:58] <kemfic> ok
[01:59] <kemfic> man, this first launch is a pain
[01:59] <kemfic> yeah
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[02:09] <Guest28683> Hi
[02:09] <Guest28683> For making a payload antenna
[02:09] <Guest28683> Found here: https://ukhas.org.uk/guides:payload_antenna
[02:09] <Guest28683> Does the wire NEED to be 1/.6mm?
[02:09] <Guest28683> Or does any single core wire work?
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[02:13] <adamgreig> yea anything around that'l be fine
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[02:13] <adamgreig> not critical. don't use something really thick or it will impale someone on landing
[02:14] <Guest28683> So any single core will work. Yesssssss thanks
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[04:19] <KM4FSW> nice job PS41 !!
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[05:06] <Reb-SM3U1C> one lap :) PS
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[05:43] <Upu> oh yeah congrats to Andy :)
[05:44] Nick change: SA6BSS -> SA6BSS-Mike
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[06:51] <Vaizki> whee!
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[06:52] <Vaizki> and PS-41 is off to the antarctic to party
[06:55] <arko> woo! around the world!
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[07:45] <Geoff-G8DHE-Lap> PS-41 has made it http://360.g8dhe.net/HAB_Flights/2015_Flights/PS-41/PS-41_201504160800_within_FAI_rules_as_well.jpg
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[07:54] <x-f> w00t!
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[08:02] <Vaizki> Geoff-G8DHE, you really love your google earth don't you :)
[08:03] <Vaizki> I've never really explored what it can do but apparently quite a bit
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[08:14] <Geoff-G8DHE-Lap> Vaizka, Yes do like GE and use it for quite a few projects other than HAB as well!
[08:18] <Geoff-G8DHE-Lap> If you look under layers, Photos, 360 Cities, and zoom into somewhere like Brighton on the South Coast you will see little Redish Icons click em!
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[08:22] <SQ5KVS> Hi Altitude
[08:24] <edmoore> very good
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[08:28] <SQ5KVS> a HD move from falcon disaster :D http://spaceflightnow.com/2015/04/15/new-longer-video-shows-falcon-demise/
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[08:34] <lz1dev> that first correction was too much, and it couldnt recover the tilt
[08:34] <lz1dev> too bad
[08:39] <SQ5KVS> They forgot to give him second chance ..
[08:40] <SQ5KVS> should fly to ~100m and try again
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[08:54] <fsphil> they know what they're doing. I can't even make a rocket go up properly
[08:54] <SpacenearUS> New vehicle on the map: 03ANU - 12http://tracker.habhub.org/#!qm=All&q=ANU
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[09:01] <SQ5KVS> fsphil: theoretically. However, two falcons destroyed :D And the owners always expect result$
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[09:05] <Vaizki> how is the drone ship doing?
[09:09] <fsphil> it's feeling a little bit depressed
[09:12] <fsphil> it survived worse last time, so probably fine
[09:13] <lz1dev> counseling?
[09:14] <Geoff-G8DHE_> Dented pride I suspect
[09:17] <infaddict> Maybe they need some sort of active grab system like when certain aircraft land on ships
[09:18] <x-f> harpoons!
[09:18] <Geoff-G8DHE_> The strength of the rocket sides is probably very low
[09:18] <Geoff-G8DHE_> Once its down, its going to be very unstable as well
[09:19] <Geoff-G8DHE_> there doesn't appear to be anything on the deck to hold it in place yet ?
[09:19] <SQ5KVS> x-f: like phobos-gound probe :D
[09:19] <Geoff-G8DHE_> Magnets ?
[09:20] <x-f> SQ5KVS, yeah, just.. working ones :)
[09:20] <SQ5KVS> :)
[09:20] <x-f> i think you meant Philae
[09:20] <x-f> Phobos didn't get very far from the Earth
[09:21] <SQ5KVS> hm..
[09:21] <SQ5KVS> You are right
[09:21] <SQ5KVS> but not in 100%
[09:21] <SQ5KVS> phobos ground had a ground penetrators :)
[09:21] <SQ5KVS> and yes, philae has
[09:21] <Vaizki> they could just hava a wire "cage" shoot up on all sides and let the rocket lean on that if it tips
[09:22] <Vaizki> naturally I'm better qualified to propose solutions off the cuff than all of spacex engineers combined
[09:23] <SQ5KVS> maybe... but, please, dont laught... I know that it sounds very futuristic, maybe try a parachute..
[09:23] <Vaizki> madness. a pelican might get tangled in it and get hurt.
[09:25] <infaddict> i think some of the aircraft carriers have some sort of harpoon to grab helicopter legs in bad weather
[09:25] <infaddict> or inflate a big donut around it the second it lands ;-)
[09:26] <SQ5KVS> infaddict: its my favorite idea :D
[09:27] <SQ5KVS> and you don't care about the sea
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[09:33] <DL7AD> morning
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[09:35] <SpacenearUS> New position from 03MTG004 after 03a day silence - 12http://tracker.habhub.org/#!qm=All&q=MTG004
[09:38] <SpacenearUS> New vehicle on the map: 03VK3YSP_chase - 12http://tracker.habhub.org/#!qm=All&q=VK3YSP_chase
[09:47] <SpacenearUS> New vehicle on the map: 03SQ7PFS - 12http://tracker.habhub.org/#!qm=All&q=SQ7PFS
[09:48] <SQ5KVS> o!
[09:48] <Dread> BoB
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[10:08] <SQ5KVS> SQ7PFS: Hi
[10:08] <SQ7PFS> Hi, can I ask for approval of my flight document?
[10:08] <SQ7PFS> Hi SQ5KVS :)
[10:08] <SQ5KVS> You preparing balloon for saturday?
[10:08] <SQ7PFS> Yes
[10:09] <SQ5KVS> khyhy I knew it :)
[10:09] <SQ7PFS> How did you know :)
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[10:10] <SQ5KVS> Ituition, my dear watson. And SQ5JRS told on sp7pki :)
[10:11] <craag> SQ7PFS: Post the flight doc id in #habhub
[10:12] <SQ7PFS> Hmm, I was going to write about that on sp7pki in a minute but great that SQ5JRS already did it :D
[10:13] <SQ7PFS> craag: Thank you
[10:13] <SQ5KVS> Maybe we talking about two different balloon but ...
[10:13] <Laurenceb__> anyone here used ffmpeg?
[10:14] <Laurenceb__> im trying to extract frames
[10:14] <SQ5KVS> SQ7PFS: czechowice balloon?
[10:14] <SQ7PFS> No, we are talking about the same balloon for sure
[10:14] <SQ7PFS> :)
[10:14] <fsphil> all frames Laurenceb__?
[10:14] <Laurenceb__> ffmpeg -i GOPR0073.MP4 -r 24 -vframes 200 -ss 0:0:11 gopro72_frames/image-%d.jpeg
[10:14] <SQ5KVS> SQ7PFS: You know the weather forecasts for saturday? :)
[10:14] <Laurenceb__> does that look ok? its giving no output
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[10:15] <fsphil> I think you need -f image2
[10:15] <fsphil> -r 24 makes no sense in this context
[10:15] <Laurenceb__> oh
[10:16] <fsphil> oh you have -ss, then the frame rate might be used
[10:16] <Laurenceb__> hmm
[10:16] <Laurenceb__> no output still
[10:16] <Laurenceb__> basically i want to grab a few seconds of frames, starting from 11 seconds in
[10:16] <Laurenceb__> for 2 seconds
[10:16] <Laurenceb__> its at 240fps
[10:17] <SQ7PFS> SQ5KVS: Yeah, I see your post on sp7pki. To be honest I didn't know about that but I'll mention this matter on meeting today
[10:19] <SQ5KVS> simply is the risk of icing, but it two days for this , so everything can change,
[10:20] <SQ5KVS> and maybe is the chance for blue sky
[10:22] <craag> SQ7PFS: Good to see more university teams!
[10:22] <Laurenceb__> oh
[10:22] <Laurenceb__> the time is going wrong
[10:22] <Laurenceb__> some sort of overflow
[10:25] <SQ5KVS> When I don;t have time to find better forecast I'm using this: http://www.wetterzentrale.de/pics/MU_Prag_avn.png its for prague, so it's close to the Czechowice
[10:26] <SQ5KVS> looks not so bad. A clouds (snow?) at 850 hpa - tihs can be a problem
[10:27] <SQ7PFS> Sound very bad but I hope that weather will be fine on Saturday since I'm not even sure wheter we can postpone this launch.
[10:27] <SQ7PFS> craag: Thank you. Actually this is going to be our 4. launch :)
[10:28] <craag> SQ7PFS: Ah cool! I'm part of Southampton University Spaceflight Society: http://susf.co.uk/
[10:28] <craag> Good luck!
[10:30] <SQ5KVS> SQ7PFS: I lobbies for postponement, because on Saturday I can't listen :) Ok, anyway its a joke, good luck
[10:32] <SQ7PFS> craag: Do you have RSS channel or something else than Twitter to follow your work?
[10:33] <craag> SQ7PFS: Afraid not - we spend too much time on projects, not enough time on social media!
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[10:33] <craag> Do you have a website?
[10:33] <craag> Twitter is the best bet for us
[10:34] <SQ7PFS> SQ5KVS: Shame :( Thanks.
[10:34] <SQ5KVS> not so much, from warsaw it's a little to far for my beam
[10:38] <SQ7PFS> craag: Good for you :) We have website http://ska.pw.edu.pl/ but I'am afraid it's only in Polish. Oh, i see..
[10:40] <SQ7PFS> SQ5KVS: Probably. To be honest I have never tracked a balloon, but it's high time to build antenna and give it a try :)
[10:41] <SQ5KVS> SQ7PFS: It's a good fun, really
[10:41] <craag> SQ7PFS: Between the pictures and google translate I can work it out :) I see you're working on a cubesat too - very cool!
[10:44] <SQ7PFS> craag: There was one already from my university, it was called PW-sat and now there is a team building its successor :)
[10:45] <SQ5KVS> SQ7PFS: I have seen the tracking station in CAMK
[10:45] <craag> Awesome - we're working on our first one now.
[10:46] <craag> Good luck again with the launch! gtg
[10:46] <SQ5KVS> fortunately was a flyby PW-SAT in this time
[10:47] <SQ5KVS> and especially I liked the bootle inside rack :D
[10:48] <SQ7PFS> SQ5KVS: I didn't have that opportunity but Kamil SQ5JRN told me about that tracking station.
[10:48] <SQ7PFS> Maybe I will see tracking station for PW-Sat2 :)
[10:48] <SQ7PFS> craag: Good luck with your satellite and your missions! :)
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[10:51] <SQ5KVS> Hm.. I have a movie but can't find now
[10:57] <SpacenearUS> New position from 03K6RPT-11 after 0310 hours silence - 12http://tracker.habhub.org/#!qm=All&q=K6RPT-11
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[11:09] <amell> wow. have you seen this? http://spaceflightnow.com/2015/04/15/new-longer-video-shows-falcon-demise/ so close&.
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[11:11] <amell> if you watch it in 1080p, you can see the top thrusters working hard to keep it upright
[11:12] <amell> thats amazing, love the way the legs come out just in time.
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[11:21] <x-f> when SpaceX first talked about soft-landing rockets to reuse them, i thought they're dreaming about far future - how much fuel it has to carry up and then down, how to ballance the rocket, how and where will it land..?
[11:21] <x-f> just few years later - ..
[11:23] Nick change: spe_ -> spe
[11:25] <SQ5KVS> x-f: it looking very impressive but for me it's not necessary at all. What wrong with landing on parachute?
[11:26] <SQ5KVS> ok, You can't land exacly on the same place (for example, oil rig)
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[11:28] <x-f> well, parachutes are ok for water landing, and that means salt water, and that makes refurbishing more difficult, afaik
[11:29] <SQ5KVS> sq7pfs I have an idea to new experiment for Your' ballons
[11:29] <SQ5KVS> x-f: Russians can do this on solid ground also :)
[11:29] <SQ7PFS> SQ5KVS: I'am listening :)
[11:30] <x-f> SQ5KVS, do they reuse their boosters?
[11:30] <SQ5KVS> HM they don't have boosters it's only a return capsule
[11:31] <SQ5KVS> SQ7PFS: in this balllon you have a longwire to listen the 225khz right (I', not sure for what, but)
[11:31] <SQ7PFS> Yes
[11:32] <SQ5KVS> so if You can add the longwire, you can also add a dipole it simple because the capsule is in the middle between balloon and end of this stuff
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[11:33] <SQ5KVS> so could be interesting (for the future) is to measure electrostatic field on this dipole? it depending on the altitude , weather condition (storm under the balloon), ionosphere condition and probably more things
[11:35] <fsphil> wonder how much RF power could be received. it might be LOS to lots of high power radio stations
[11:35] <SQ5KVS> we still are not sure what happening exactly in the ionosphere for example the ghost, sprites, ect
[11:36] <fsphil> wonder if a long wire suspended above a storm would encourage sprites to form
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[11:36] <SQ5KVS> maybe 5km long :D
[11:37] <fsphil> would be an interesting way of putting a pack of sensors right in the middle of one
[11:37] <SQ5KVS> I read that this kind of phenomena (spirits) can produce a significant gamma rays
[11:37] <SQ7PFS> SQ5KVS: It might be interesting. Actually there is one experiment associated with electrostatic field AFAIK. I didn't work on experimetrs so I don't know details. Now I have got to go, but I will try to post more information about experiments on sp7pki today
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[11:48] Nick change: day -> wangboot
[11:48] Nick change: wangboot -> day
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[12:03] <Laurenceb__> http://www.st.com/web/en/press/p3678
[12:03] <Laurenceb__> nice - DSI on an micro
[12:05] <mattbrejza> is that what most camera modules use now?
[12:07] <Laurenceb__> yes, but DSI is only compatible with displays
[12:07] <mattbrejza> ohright
[12:09] <Laurenceb__> should work with a nokia N900 display
[12:10] <adamgreig> "a powerful 32-bit low-power ARM® Cortex®-M4 MCU"
[12:11] <adamgreig> i bet an editor somewhere had a little cry there
[12:11] <adamgreig> the powerful low-power ARM eh
[12:13] <fsphil> hah
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[12:49] <Vaizki> talking of low power, those older R&S communication testers I got.. 400/700MHz Pentium III Celeron with 256 or 512MB memory :)
[12:49] <Vaizki> they are low in computing power only...
[12:50] <gonzo_> I still have a 266meg pentium running at home
[12:51] <gonzo_> admittedly, it's for a specific job that needs a slow machine
[12:51] <Vaizki> well the R&S is loaded with DSP and FPGA of course
[12:51] <Vaizki> the pentium runs dos or win2k for displaying data only
[12:52] <gonzo_> I think we have a scope here that has win95 in it
[12:53] <gonzo_> it's still prob the most modern bit of test kit in the building
[13:01] <SQ5KVS> I have a linux distribution smaller than 5MB :) It works on pentium
[13:02] <SQ5KVS> hm.. I had
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[13:17] <SpeedEvil> I had a X+browser+networking+xterm+kernel stack that fit on a 1.44M (nominal) floppy
[13:18] <SpeedEvil> I had to trim lynx and remove the bloat - print was about half the binary size
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[13:29] <SQ5KVS> SpeedEvil: Yea it was something like this
[13:32] <Laurenceb__> someone has booted uclinux on f4discovery
[13:33] <Laurenceb__> 512k flash
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[13:39] <SpeedEvil> Someone has booted linux on a 8051 with 1K of RAM
[13:39] <SpeedEvil> (they were insane)
[13:40] <Laurenceb__> wut
[13:40] <fsphil> it only did "Loading linux..."
[13:41] <fsphil> does that arm emulator on avr count? :)
[13:41] <Laurenceb__> 32bit emulation?
[13:41] <fsphil> I don't remember how much ram that had
[13:41] <Laurenceb__> a lot
[13:41] <SpeedEvil> http://www.atmel.com/devices/atmega1284p.aspx?tab=parameters
[13:41] <SpeedEvil> correction - 16K RAM
[13:41] <SpacenearUS> New vehicle on the map: 03IK8SUT-11 - 12http://tracker.habhub.org/#!qm=All&q=IK8SUT-11
[13:41] <SpeedEvil> http://dmitry.gr/index.php?r=05.Projects&proj=07.%20Linux%20on%208bit
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[13:45] <SQ5KVS> hi Tom
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[13:51] <triky> Hi, has anyone here sent a raspberry pi with a camera up on a balloon? What insulation did you use and was it suffiecient?
[13:52] <fsphil> it's been done several times. polystyrene box is fine
[13:52] <triky> awesome, thanks. Trying to plan a project :)
[13:52] <Vaizki> there's ready made hardware and software for it too.. but fun to do your own
[13:53] <triky> yeah id like to do a project from scratch, should be a laugh
[13:54] <x-f> that's the spirit
[13:54] <triky> from the guides ive read, they all seem to say the payload has to come down by parachute, do you know if theres any regulations on motors etc to power it back towards your location?
[13:54] <triky> almost like a drone type scenario
[13:54] <SpeedEvil> triky: where ar eyou
[13:54] <SpeedEvil> varies by location.
[13:55] <Vaizki> it's not a balloon any more in the EU after that
[13:55] <triky> bristol UK
[13:55] <fsphil> not allowed in the UK sadly
[13:55] <triky> what about actuators to fly a chute?
[13:55] <nickjohnson> triky: RPi seems like a bad choice; it's not exactly designed for minimal power consumption _or_ weight
[13:55] <SpeedEvil> Steered parachutes probably are.
[13:56] <Vaizki> nickjohnson: the A+ is not too bad for an up & down
[13:56] <triky> what would you sudgest nick? trying to keep costs low
[13:56] <triky> have a model B and camera already
[13:56] <Vaizki> but the Pi only makes sense if you use the camera
[13:56] <nickjohnson> Vaizki: It just seems to me that there are almost certainly better choices for anything you might want to do with it. :)
[13:56] <nickjohnson> triky: What do you want it to do when it's up there?
[13:56] <SpeedEvil> Pi is fine really - if you only want a 4 hourish flight
[13:56] <SpeedEvil> Then the batteries are almost negligible
[13:56] <nickjohnson> true
[13:57] <triky> havent really decided, still in planning stage
[13:57] <Vaizki> nickjohnson: the Pi camera board is rather good
[13:57] <SpeedEvil> It's when it gets longer that it gets intractable
[13:57] <nickjohnson> It's hard to beat "I already have it here" for cost, anyway
[13:57] <triky> true :)
[13:57] <Vaizki> nickjohnson: I know the kickstarter is "done" but is there a way to splash out on a case after the fact?
[13:58] <Vaizki> now that you're here :)
[13:58] <nickjohnson> Vaizki: Yup! If you were a backer, you will have got an invite to backerkit, where you can add a case. Check your spam if you haven't seen it.
[13:58] <Vaizki> ok hmm
[13:58] <nickjohnson> If you weren't (sorry, my memory is bad), you can preorder it here: https://www.crowdsupply.com/arachnid-labs/tsunami
[13:58] <nickjohnson> I can send you a new backerkit invite if you'd like, just pm me your email address
[13:59] <triky> what have you guys done with your payloads? Is it mostly image capture?
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[14:00] <daveake> You mentioned a model B .... suggest you don't fly that. It's pretty hungry. Fly an A or A+ instead.
[14:01] <triky> ok I can get one off ebay cheap enough :)
[14:01] <triky> steering a chute could be a fun task
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[14:02] <Vaizki> nickjohnson: found it, upgraded, done
[14:02] <nickjohnson> Vaizki: Awesome :)
[14:02] <nickjohnson> Thanks!
[14:03] <Vaizki> and yes I was a backer.. now I'm backer 278 because I changed my pledge :(
[14:03] <Vaizki> to the back of the queue!
[14:05] <Vaizki> although I have to admit I got a better signal generator yesterday
[14:05] <Vaizki> I've been cheating on you
[14:05] <nickjohnson> No!
[14:05] <nickjohnson> I'm shocked. Shocked!
[14:05] <Vaizki> sorrrryyy :(
[14:05] <Laurenceb__> triky: your name is appropriate
[14:06] <nickjohnson> Vaizki: What did you get?
[14:06] <Laurenceb__> https://ukhas.org.uk/_media/projects:ukhas_glider_project:pict7924.jpg?w=750&tok=e9b4e0
[14:06] <Vaizki> nickjohnson: http://www.anritsu.com/en-US/Products-Solutions/Products/MG3700A.aspx
[14:07] <Vaizki> it did cost several hundred though ;)
[14:07] <triky> Laurenceb_: sorry i use it for everything, names richard, abriviation
[14:07] <nickjohnson> Fancy
[14:07] <nickjohnson> I was about to say, I bet it cost more than mine :P
[14:07] <nickjohnson> I've been looking into SCPI lately. I'm going to see about providing SCPI-compliant firmware so you can easily remote-control it.
[14:08] <Vaizki> nickjohnson: yea the used test equipment sites seem to ask 40k USD with the options I have. which is ludicrous.
[14:09] <richardeoin> triky: hey, I'm based in bristol too. I've sent up a few balloons with the university society http://www.bristol-seds.co.uk/
[14:09] <nickjohnson> Vaizki: Sounds like you got a good deal, then
[14:09] <richardeoin> we used a polystyrene box on our first flight, worked great
[14:09] <Vaizki> nickjohnson: a bit overkill :D
[14:10] <triky> sweet, what did you do? image capture?
[14:10] <nickjohnson> I don't see its frequency accuracy listed
[14:10] <richardeoin> mmm, we had a canon camera with CHDK set on a timer
[14:11] <triky> ah sweet. Im still trying to decide what to send up. wondering if i should try some data collection. Temp, wind speed etc
[14:11] <Vaizki> nickjohnson: I think it's 50ppb or so
[14:12] <nickjohnson> Wow, really? Must have an OCXO in it?
[14:12] <Vaizki> yea double oven I think
[14:12] <Vaizki> rubidium is an option
[14:12] <nickjohnson> wow
[14:12] <Vaizki> also has an external input
[14:13] <Vaizki> and output so I can get some lesser clock endowed gear in sync :)
[14:14] <nickjohnson> yeah
[14:14] <nickjohnson> External reference input was something a lot of people asked for
[14:14] <nickjohnson> But with no PLL, running from a 10mhz input just isn't practical
[14:14] <Vaizki> Frequency: 10 MHz, Aging rate: ±1 × 108/day, ±1 × 107/year, Temperature stability: ±2 × 108 (0Ú to 50°C),
[14:15] <Vaizki> that's what the spec says for the anritsu
[14:15] <nickjohnson> "You look like you've aged a year in the last 10 days, darling"
[14:16] <Vaizki> I also got a bunch of R&S comm testers cheaply, they all seem to have signal analyzer and rf generator 10MHz-2.7GHz
[14:17] <Vaizki> but no tracking generator anywhere
[14:17] <nickjohnson> A friend of mine just got his hands on an MSO-series scope for about 20% of retail
[14:18] <nickjohnson> Only because I threatened to buy it if he didn't.
[14:19] <Vaizki> they are sexy but I am sticking with saleae and a non-MS scope
[14:19] <Vaizki> actually the rigol 1054Z I have on the way has 4 channels and can do i2c, spi etc decoding
[14:19] <Vaizki> it's kind of a 4-channel MSO.. :)
[14:20] <nickjohnson> non-MS?
[14:20] <nickjohnson> Oh, right
[14:20] <Vaizki> non-mixed-signal.. :)
[14:20] <fsphil> yea I thought microsoft too for a second :)
[14:20] <nickjohnson> I have the 1054Z. Its decoding support sucks compared to the saleae, though
[14:20] <fsphil> scary enough that some scopes do run windows
[14:21] <nickjohnson> I think the MSO ones probably do. I know they take ages to boot, anyway.
[14:22] <nickjohnson> I'm currently planning in my head a eurorack based expandable modular test & measurement rack
[14:22] <Vaizki> i know the saleae is better but sometimes you need to see what the digital waveform looks like or trigger off analog
[14:22] <Vaizki> so I expect that will be easier with 1054Z
[14:22] <nickjohnson> Have some nice power rails, an RPi compute module, and a backplane with USB, and digital crossbar switch for inter-module communications etc
[14:23] <nickjohnson> Oh yeah, to each their own task. I just think that the DS1054Z is crap at doing logic analysis.
[14:24] Action: nickjohnson was also playing with using an RPi to capture screenshots of his DS1054Z over USB and post them to IRC, instead of swapping USB drives around all the time
[14:25] <Vaizki> doesn't it have an SD slot?
[14:25] <Vaizki> put an eye-fi in it :)
[14:25] <nickjohnson> nope
[14:25] <nickjohnson> USB host port on the front, usb device port on the back
[14:25] <Vaizki> hmmh ok I remember wrong
[14:25] <nickjohnson> I should actually skip the rpi and just plug it into my mac when I want to capture something
[14:25] <nickjohnson> Set up a trivial script to grab the screenshot and upload it somewhere then put the URL in the paste buffer
[14:26] <Vaizki> or have the rpi upload it to imgur and irc /msg you the url ;)
[14:28] <Vaizki> nickjohnson: maybe take a look at HPSDR when thinking modular test equipment
[14:28] <Vaizki> http://openhpsdr.org/atlas.php
[14:28] <Vaizki> they have a passive backplane that you plug SDR receivers, transmitters, usb cards with fpga etc into
[14:29] <Vaizki> not sure how vibrantly alive the project is.. lots of old dates around
[14:29] <Vaizki> but they have for example a spectrum analyzer module
[14:30] <nickjohnson> Hm, yup, that's very similar to what I had in mind
[14:30] <nickjohnson> Only, I want to make the backplane smarter, with a USB hub so each slot has its own USB device port, and potentially with a CPLD to implement a crossbar switch so any device can route to any other without pin sharing
[14:31] <nickjohnson> Vaizki: RE uploading, but then I still need some way to trigger the screenshot
[14:31] <Vaizki> hmm I thought you just press print on the scope?
[14:32] <Vaizki> and it can save into internal memory?
[14:33] <Vaizki> and these R&S boxes I have.. they are basically passive backplanes with an ISA bus and controller PC card + dsp and rf cards
[14:34] <nickjohnson> It saves it to internal memory or the USB key, as far as I know there's no way to have it save to an external device
[14:35] <Vaizki> ok so you can't poll the internal memory from a HTTP client?
[14:36] <Vaizki> well I will see what it can do when I get mine...
[14:37] <SpacenearUS> New vehicle on the map: 03VK3XCO_chase - 12http://tracker.habhub.org/#!qm=All&q=VK3XCO_chase
[14:37] <Laurenceb__> http://imgur.com/gallery/QDPsQ
[14:37] <nickjohnson> Vaizki: The only SCPI command to get an image is "DISP:DATA?", which returns a BMP of the current screen image
[14:37] <nickjohnson> You can retrieve waveform data, but then you're stuck rendering it yourself :)
[14:39] Nick change: fl_0|afk -> fl_0
[14:43] <Reb-SM3U1C> evening!
[14:44] <Vaizki> nickjohnson: oh joy ;)
[14:45] <nickjohnson> heh, indeed
[14:45] <nickjohnson> So I think the Python script is the easiest solution
[14:45] <nickjohnson> I just need to get pyusb working on my mac
[14:45] <nickjohnson> So I don't have to use this closed-source VISA lump
[14:45] <nickjohnson> s/lump/blob/
[14:46] <nickjohnson> So, one downside of using an ATX supply as the power supply for my hypothetical project is that I can't have a "bench supply" module that goes up to 12V (much less, more than that)
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[14:53] <Vaizki> nickjohnson: hmm why not?
[14:54] <nickjohnson> Vaizki: Any linear regulator is going to have a dropout voltage, which will preclude going all the way to the supply rail
[14:54] <Vaizki> modern atx power supplies put out loads of 12V
[14:54] <nickjohnson> Right, so I could have a kickass 10V max bench supply
[14:54] <nickjohnson> But not a 12V one, unless it's just straight from the input power rail
[14:54] <zyp> nickjohnson, brew install libusb, easy_install pyusb, done
[14:54] <zyp> assuming you got homebrew already
[14:55] <Vaizki> ok I get it now :)
[14:55] <nickjohnson> I'm using port, but after doing basically the same thing, pyusb claims there's no backend installed.
[14:55] <zyp> that's because macports is a heap of shit
[14:55] <nickjohnson> Vaizki: On the other hand, TI have some kickass high power opamps that would make a really cool -10v - 10v supply :)
[14:55] <nickjohnson> zyp: It worked just fine on my work mac, and I really doubt it's macports' fault
[14:55] <zyp> (and probably because pyusb doesn't look for libusb in /opt/lib)
[14:56] <nickjohnson> I can't find any docs on where pyusb looks, or how to persuade it to look elsewhere, either
[14:56] <zyp> I would guess it's just using ctypes to load the dylib, leaving the search path up to ctypes
[14:57] <nickjohnson> Never mind, found the relevant bit of the readme
[14:57] <nickjohnson> I'll try again when I get home.
[14:57] <SQ5KVS> anyway, someone knowns a not expesive opamps with low output resistance?
[14:57] Action: nickjohnson also needs to find out how tricky usbtmc is to implement for a device, too
[14:58] <nickjohnson> SQ5KVS: How low? Effective output impedance depends somewhat on feedback and gain, too.
[14:58] <SQ5KVS> something like TS914 for example (I have 100 ohm load)
[14:58] <zyp> IIRC usbtmc is just a simple usb bulk pipe pair
[14:58] <nickjohnson> zyp: Sounds conveniently simple, though I've only ever implemented CDC and HID so far.
[14:59] <nickjohnson> SQ5KVS: What's your specific requirement? Driving a 100 ohm load? How close to the rails?
[14:59] <zyp> yeah, the actual work is going to be the TMC command parser
[14:59] <SQ5KVS> it's not a special important. 1v p-p from 6-9 VCC is enought
[14:59] <SQ5KVS> its for sdr modulator
[14:59] <zyp> the USB transport is as easy as USB can be
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[15:00] <SQ5KVS> at now I'm using a tba2822m wchich is not bad.. but I have no feedback control (I mean, gain)
[15:00] <nickjohnson> SQ5KVS: In that case, anything that can supply 1v/100 ohms = 10mA short circuit current ought to be sufficient
[15:00] <nickjohnson> zyp: Glad to hear it :)
[15:00] <nickjohnson> SQ5KVS: I think pretty much any opamp in existence will be able to meet those requirements
[15:01] <SQ5KVS> hm popular TL72 or similar has a problem
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[15:02] <SQ5KVS> as I can see in dayasheet for tl072 with 0.1Kohm load it has ~0V :D out
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[15:03] <nickjohnson> Hm, TL072 doesn't specify short-circuit current at all
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[15:04] <SQ5KVS> no but has a chart output voltage vs load
[15:04] <nickjohnson> You're right
[15:04] <nickjohnson> I take it back, not every opamp can drive 10mA :P
[15:05] <SQ5KVS> ok, but, anyway,
[15:05] <SQ5KVS> it help
[15:05] <SQ5KVS> http://www.linear.com/parametric/High_Output_Current_Amplifiers#!1004_%3E=5!gbw_!vsmax_5!sr_!ismax_!vos_!enoise_!vosdrift_!lfnoise_!ibias_!inoise_
[15:05] <nickjohnson> LM324, the jellybeaniest of all opamps, can do it.
[15:05] <nickjohnson> This really doesn't count as high current :)
[15:06] <SQ5KVS> hm 60ma to ground is enought :)
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[15:10] <Laurenceb__> https://www.kickstarter.com/projects/thefutureisnow/car-prototype-alternative-vehicle-fuel-source?ref=category
[15:10] <Laurenceb__> lol
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[15:13] <nickjohnson> Laurenceb__: Oh good lord
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[15:20] <nickjohnson> Of course, if you really want a high current output opamp, there's always this: http://www.ti.com/lit/ds/symlink/opa548.pdf
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[15:38] <SQ5KVS> nickjohnson: :D
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[16:50] <SpacenearUS> New vehicle on the map: 03J2314363 - 12http://tracker.habhub.org/#!qm=All&q=J2314363
[16:51] <SpacenearUS> New position from 03VE2WMG-11 after 035 days silence - 12http://tracker.habhub.org/#!qm=All&q=VE2WMG-11
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[17:01] <SpacenearUS> New vehicle on the map: 035593754300_chase - 12http://tracker.habhub.org/#!qm=All&q=5593754300_chase
[17:04] <SpacenearUS> New vehicle on the map: 035593754838_chase - 12http://tracker.habhub.org/#!qm=All&q=5593754838_chase
[17:06] <Laurenceb__> http://rs1ci.memecdn.com/418/7092418_t.jpg
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[17:55] <bradfirj> Anyone experimented with the STM32F4's DSP as uplink decoding for RTTY or Domino, or suchlike
[17:55] <Lunar_Lander> hello
[17:58] <adamgreig> bradfirj: mattbrejza
[17:58] <adamgreig> well it was an stm32f0 without a DSP unit, but it's pretty easy decoding
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[18:26] <daveake> More video from the SpaceX barge https://vid.me/i6o5
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[18:27] <arko> WOW
[18:27] <Matt_PrjHet> Evenin' all
[18:28] <mikestir> that's ace. they really did nearly make it
[18:28] <Matt_PrjHet> Any SSDV gurus on?
[18:29] <daveake> just ask
[18:32] <Matt_PrjHet> Hi Dave, I need to flip my pi cam. I've set the -hf & -vf suffix, now I get 'Taking photo for storage' the right way up, but 'Taking photo for SSDV' still sends the image unflipped.
[18:32] <Matt_PrjHet> By the way you were spot on with my card being full last week and not sending the latest image,
[18:32] <daveake> You need to edit snapper.c, change the command in there, and run make
[18:32] <Matt_PrjHet> thanks again for answering my tweets
[18:33] <daveake> np
[18:33] <daveake> good guess :)
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[18:35] <arko> daveake: that video is awesome
[18:40] <Matt_PrjHet> This line in snapper.c? fprintf(fp, "raspistill -w %d -h %d -t 3000 -ex auto -mm matrix -o /home/pi/pits/tracker/download/$1.jpg\n",
[18:40] <daveake> yes
[18:40] <Matt_PrjHet> Juat add -vf -hf after... 3000?
[18:41] <Matt_PrjHet> Or before -t
[18:41] <daveake> deither
[18:41] <daveake> -d
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[18:47] <Matt_PrjHet> How do I run make?
[18:48] <Matt_PrjHet> I'm guessing that compiles the changes I just made?
[18:48] <daveake> you type make and press enter
[18:48] <daveake> yes
[18:49] <Matt_PrjHet> Is that while I'm nano'd into the snapper.c file or somewhere else?
[18:49] <daveake> You need to save the file and exit nano back to the command line
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[18:53] <Matt_PrjHet> Hmm... I hit make. It looked like it did something. But it's still flipping the SSDV images.
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[18:53] <Matt_PrjHet> The line now reads: fprintf(fp, "raspistill -w %d -h %d -vf -hf -t 3000 -ex auto -mm matrix -o /home/pi/pits/tracker/download/$1.jpg\n"
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[18:54] <fsphil> you'll need to rebuild it after changing it
[18:54] <daveake> confused
[18:54] <Matt_PrjHet> Rebuild...?
[18:54] <daveake> you said "'Taking photo for SSDV' still sends the image unflipped." earlier
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[18:54] <fsphil> ah dave already mentioned that
[18:55] <fsphil> (running make)
[18:55] <daveake> and now " But it's still flipping the SSDV images."
[18:55] <daveake> so it's changed ?
[18:55] <Matt_PrjHet> Ah....!
[18:55] <daveake> have you restarted the tracker?
[18:55] <Matt_PrjHet> It is working!
[18:55] <daveake> there you go :)
[18:56] <Matt_PrjHet> HUGE thanks from Project Helium Tears once again :D :) :D
[18:56] <daveake> np
[18:56] <fsphil> that is an odd name
[18:56] <daveake> makes a change from customers putting boards on upside down
[18:56] <Matt_PrjHet> We're not very clever. Figured it'd all end in tears.
[18:57] <Matt_PrjHet> Ha ha... You saw the vlog!
[18:57] <fsphil> lol
[18:57] <fsphil> don't tell me you had it on backwards?
[18:57] <daveake> Upu did a "this way up" page on the web site
[18:57] <fsphil> oh god, don't tell Upu
[18:57] <Matt_PrjHet> Facebook.com/ProjectHeT
[18:57] <daveake> should have put the page on upside down
[18:57] <fsphil> it'll break him
[18:57] <daveake> lol
[18:58] <daveake> It's going on the next batch of boards too
[18:58] <Matt_PrjHet> I told you we're not very clever!!!
[18:58] <daveake> "this way up"
[18:58] <Matt_PrjHet> :D
[18:58] <Matt_PrjHet> (y)
[18:58] <daveake> and "not this way up you idiot"
[18:58] <fsphil> "if you can read this you're doing it wrong"
[18:58] <daveake> yup
[18:59] <fsphil> "this way up" will only stop one of the possibilities
[18:59] <Matt_PrjHet> I gotta gents. You're the best. Thanks again!
[18:59] <Matt_PrjHet> *run
[18:59] <daveake> bb
[18:59] <fsphil> g'luck!
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[18:59] <fsphil> how many's that now? :)
[19:00] <jcoxon> PS-41 is going for antartica!
[19:00] <jcoxon> and also has circumnavigated (approximately)
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[19:02] <CraigChapman> Afternoon all
[19:02] Nick change: CraigChapman -> KF5WYX
[19:03] <Lunar_Lander> XD
[19:03] <Lunar_Lander> PS-41 is awesome
[19:03] <fsphil> is that three teams now to go around?
[19:04] <KF5WYX> So, I think my flight computer is outputting the correct bitstream (will confirm when I get home from work), but my radio TM-D700A internal TNC still does not decode a packet. Speculating on the cause, I wondered, how likely is it that the TNC will ignore packets from it's own callsign?
[19:05] <fsphil> problem with bit stuffing?
[19:05] <fsphil> that always catches me out
[19:05] <KF5WYX> I'm trying to confirm that.
[19:06] <KF5WYX> fsphil - Would it be possible for you to capture a bit sequence from your flight computer for me to compare against? If I had a known good sample, that'd help.
[19:06] <fsphil> can do, gimme a few minutes
[19:07] <KF5WYX> I appreciate it, but take your time.
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[19:14] <Upu> evening
[19:15] <KF5WYX> Evening Upu
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[19:24] <Upu> KF5WYX were you asking about the ADS-B amps ?
[19:24] <amell> https://vid.me/i6o5 - another angle of the falcon landing
[19:25] <Upu> so damn close
[19:25] <daveake> yeah I posted that earlier
[19:25] <amell> impressive :)
[19:25] <daveake> very close
[19:25] <KF5WYX> Not I
[19:25] <amell> oh did you. sorry, didnt read back
[19:25] <daveake> np
[19:25] <Upu> ok
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[19:26] <Upu> btw we are sorting the conference out atm
[19:26] <Upu> if anyone is interested
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[19:26] <amell> have you decided on the location? :)
[19:26] <Upu> Have some ideas waiting on prices I think
[19:27] <Upu> I'm stepping back a little this year
[19:27] <daveake> any idea on dates yet?
[19:27] <Upu> stuff like RSGB exams may not get forgotten
[19:27] <Upu> not yet
[19:28] <Upu> avoiding AMSAT (which is quite early) and BATC (5-6 Sept)
[19:29] <SpacenearUS> New position from 03J2314232 after 032 days silence - 12http://tracker.habhub.org/#!qm=All&q=J2314232
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[19:31] <infaddict> i'm defo interested
[19:31] <Upu> good :)
[19:32] <infaddict> also interested in RSGB stuff
[19:32] <Upu> yeah we can put you through the foundation exam
[19:32] <infaddict> great!
[19:33] <Upu> if anyone has any requests or suggestions for talks let us know
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[19:43] <SpacenearUS> New vehicle on the map: 03EDUPIC_Alt1 - 12http://tracker.habhub.org/#!qm=All&q=EDUPIC_Alt1
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[19:48] <amell> would be interested in foundation too. depends on timing. I was on summer hols last conference.
[19:49] <Upu> ok cool
[19:49] <Upu> we'll post on the mailing list
[19:52] <SpacenearUS> New vehicle on the map: 03BAHUDE - 12http://tracker.habhub.org/#!qm=All&q=BAHUDE
[19:52] <Upu> hmm :)
[19:52] <Upu> Jededu :)
[19:53] <Jededu> :)
[19:53] <amell> when are you launching?
[19:54] <Jededu> End of the month hopefully
[19:54] <amell> oh i thought it was going to be this evening :)
[19:55] <KF5WYX> ok, regardless of 6th character, drop in a zero when five 1's are transmitted.
[19:55] <KF5WYX> oops, wrong window :)
[19:55] <Jededu> Just testing :)
[19:56] <Jededu> A Pi in the Sky PAVA and a PIC
[19:57] <Jededu> On the same flight
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[19:57] <daveake> covering 3 processor bases there
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[20:09] <SpacenearUS> New vehicle on the map: 03EDUPITS - 12http://tracker.habhub.org/#!qm=All&q=EDUPITS
[20:15] <SpeedEvil> https://www.youtube.com/watch?v=BmbXYaVrbwM - F9 - from the barge
[20:16] <SpeedEvil> After the smoke clears at engine shutdown, you can clearly see the seemingly completely intact merlins as they and the intact stage piviot and smash into the deck.
[20:24] <x-f> who's moving the camera?
[20:24] <fsphil> think it's a phone camera capture of a screen
[20:24] <arko> elon is doing a selfie
[20:25] <SpeedEvil> fsphil: that would make sense
[20:25] <SpeedEvil> The sound has no bass
[20:28] <Lunar_Lander> that would have been soooo good
[20:28] <Lunar_Lander> almost
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[20:29] <SpeedEvil> They need to work on that last 5mm. It's kinda brutal
[20:30] <Lunar_Lander> yeah
[20:31] <Vaizki> soooo close :O
[20:33] <Upu> fancy coming to London in September Vaizki ?
[20:33] <Lunar_Lander> September might be free of obstructions this time
[20:33] <Upu> woah
[20:33] <Lunar_Lander> :D
[20:33] <x-f> is the date set?
[20:33] <Vaizki> prolly can't make it :P
[20:33] <Upu> not quite
[20:34] <Upu> we are firming something up
[20:34] <Upu> but Lunar wow :)
[20:35] <fsphil> lol
[20:35] <fsphil> JOIN US
[20:35] <Upu> UKHAS Conference 2015 This time its Lunar XD
[20:36] <Lunar_Lander> yeah Upu :D
[20:36] <Upu> would be great Lunar
[20:36] <Upu> about bloody time
[20:38] <arko> Mashup idea: http://i.imgur.com/Hc9ko.gif with http://i.imgur.com/fPG7ThQ.gif
[20:38] <Upu> :)
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[20:41] <Lunar_Lander> yea
[20:41] <Lunar_Lander> there is a bad news though
[20:41] <Lunar_Lander> MESSENGER will crash on April 30 thinks the APL
[20:42] <fsphil> not that bad. this was the plan :)
[20:42] <fsphil> and it'll get some really close up shots before then
[20:42] <Lunar_Lander> yea
[20:42] <Lunar_Lander> :)
[20:42] <Lunar_Lander> and
[20:42] <Lunar_Lander> pluto is orange
[20:42] <Lunar_Lander> :D
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[20:46] <Jededu> ping upu
[20:46] <Upu> yo
[20:46] <Jededu> pm ;)
[20:46] <Upu> yay just like old times
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[20:56] <fsphil> I'd love for the last closeup shot of pluto from New Horizons to be "HAHA - Mike Brown" written into the dust
[20:57] <arko> lol
[20:58] <fsphil> also, http://www.jpl.nasa.gov/news/news.php?release=2015-133
[20:59] <fsphil> it's the year of the dwarf planets
[21:00] <Lunar_Lander> :)
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[21:32] <KF5WYX> Time to see out the end of day at work, be back later all. Thanks again fsphil, I think you might well have rescued me - I'll let you know how it goes.
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[21:34] <fsphil> ax.25 has driven many people mad
[21:36] <Laurenceb_> haha
[21:36] <Laurenceb_> been there done that
[21:36] <Laurenceb_> i tried to read the spec....
[21:36] <fsphil> lol
[21:36] <fsphil> so did KF5WYX
[21:36] <Laurenceb_> not for people who still have their sanity
[21:36] <Laurenceb_> I thought ISO standards were bad...
[21:37] <Laurenceb_> turns out my day job isnt as bad as some stuff you can dream up for "fun"
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[22:25] Nick change: fl_0 -> fl_0|afk
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[22:34] <Laurenceb_> https://vid.me/i6o5
[22:36] <Laurenceb_> doesnt actually look too bad there
[22:36] <Laurenceb_> the leg looks like it was too weak
[22:37] <Laurenceb_> i wonder if it wasnt the load after landing, but the impact shock that weakened it
[22:38] <SpeedEvil> It came down at a fair sideways speed, and a fair angle
[22:38] <SpeedEvil> it's likely it failed before 'anding'
[22:39] <Laurenceb_> yeah, the way it fails makes the leg look really weak, but i bet it was already damaged
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[22:46] <SpacenearUS> New position from 03MTG004 after 0313 hours silence - 12http://tracker.habhub.org/#!qm=All&q=MTG004
[22:48] <SpacenearUS> New vehicle on the map: 03J2314395 - 12http://tracker.habhub.org/#!qm=All&q=J2314395
[22:50] <Laurenceb_> i wonder if plane recovery could work
[22:51] <Laurenceb_> with really really long bungee rope
[22:51] <mattbrejza> just land it on water
[22:51] <mattbrejza> attach floats
[22:51] <mattbrejza> water is soft right?
[22:51] <Laurenceb_> http://en.wikipedia.org/wiki/Fulton_surface-to-air_recovery_system
[22:53] <SpeedEvil> Laurenceb_: It's 30 tons or so.
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[22:53] <SpeedEvil> Laurenceb_: It's really challenging.
[22:54] <SpeedEvil> Plus, best case - you now have 30 tons hanging off an aeroplane. How do you land this.
[22:54] <Laurenceb_> yeah
[22:54] <SpeedEvil> I suggested sort-of-seriously a more-or-less stock hexacopter.
[22:54] <SpeedEvil> Made from 6 stock heli engines and blades.
[22:55] <Laurenceb_> "the pig began to spin as it flew through the air at 125 mph (200 km/h). It arrived on board uninjured but in a disoriented state. Once it recovered, it attacked the crew"
[22:55] <Laurenceb_> pmsl
[23:03] <Laurenceb_> https://www.youtube.com/watch?v=quN37YskoaM
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[23:09] <lcollins> hey does anybody know if there's a guide for setting up the habduino shield with HX1 radio?
[23:11] <amell> new star wars droid - any idea how it works? http://www.polygon.com/2015/4/16/8431295/star-wars-the-force-awakens-bb-8-puppet-jj-abrams - is it a magnet holding its head on?
[23:13] <amell> i want one of those, radio controlled.
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[23:15] <KF5WYX> re:
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[00:00] --- Fri Apr 17 2015