highaltitude.log.20150903

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[09:15] <SpacenearUS> New vehicle on the map: 03SR0FLY - 12http://tracker.habhub.org/#!qm=All&q=SR0FLY
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[09:47] <SpacenearUS> New vehicle on the map: 03car_chase - 12http://tracker.habhub.org/#!qm=All&q=car_chase
[09:49] <SpacenearUS> New vehicle on the map: 03car vios JMP 9316_chase - 12http://tracker.habhub.org/#!qm=All&q=car%20vios%20JMP%209316_chase
[09:56] <SpacenearUS> New vehicle on the map: 03toyota vios JMP9316_chase - 12http://tracker.habhub.org/#!qm=All&q=toyota%20vios%20JMP9316_chase
[09:57] <SpacenearUS> New vehicle on the map: 03BMW 5 siries JPS23_chase - 12http://tracker.habhub.org/#!qm=All&q=BMW%205%20siries%20JPS23_chase
[10:01] <SpacenearUS> New vehicle on the map: 03nissan g35 WRL8282_chase - 12http://tracker.habhub.org/#!qm=All&q=nissan%20g35%20WRL8282_chase
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[10:32] <eroomde> that vaccum chamber i got off ebay was at 30,000ft equiv at the weekend
[10:32] <theRealSIbot> In real units: 30,000 ft = 9144 m
[10:32] <eroomde> still at 19
[10:32] <eroomde> not bad for an old thing
[10:35] <Geoff-G8DHE-M> So your going to fly a balloon it as well ? ;-)
[10:37] <eroomde> sadly it's not that big!
[10:37] <Geoff-G8DHE-M> Shame you could have the entire flight from the bench :)
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[10:39] <Beam_balloon> Hello
[10:39] <Beam_balloon> A question
[10:39] <Beam_balloon> what is everybody's opinion on the Vaisala RS92-SGP Radiosonde?
[10:40] <eroomde> i doubt anyone in here has flown one
[10:40] <eroomde> those are usually just used by the met agencies
[10:40] <Vostok> i'm trying to get employed for making them
[10:40] <RealBorg> eroomde, ebay url?
[10:40] <eroomde> RealBorg: it was a one-off
[10:41] <RealBorg> yeah, just want to see this 19-year old thing :)
[10:41] <eroomde> https://www.dropbox.com/s/1dmdhjgo36dteaj/2015-07-02%2010.30.47.jpg?dl=0
[10:41] <Beam_balloon> Okay because I am thinking about using one
[10:42] <eroomde> Beam_balloon: for what? weather forecasting?
[10:42] <Beam_balloon> Yes
[10:42] <eroomde> they're not really suitable for our style of hab flight
[10:42] <Beam_balloon> that is my paper about if you remember us talking about it
[10:42] <Beam_balloon> why not?
[10:42] <eroomde> where is your paper about it?
[10:42] <Beam_balloon> because it seems like it's doing a lot of work I'm not really good at yet
[10:42] <Geoff-G8DHE-M> Also you won't hold a licence for the transmitter, and the Met agencies will be a bit bemused if you use an old unit on there channels ...
[10:43] <eroomde> i'm confused
[10:43] <RealBorg> looks heavy, how big is it?
[10:43] <Beam_balloon> and when i said i had another year to learn, I was wrong,...
[10:43] <eroomde> oh you're the dutch guy?
[10:43] <Beam_balloon> yep
[10:43] <Beam_balloon> thats me
[10:43] <eroomde> sorry i'm bad with names
[10:43] <eroomde> ok
[10:43] <Beam_balloon> thats okay
[10:43] <Beam_balloon> np
[10:43] <Beam_balloon> so what do you think?
[10:43] <eroomde> so that probabpy won't work because they use licensed radio powers and freuqnecies and don;'t send data down in an open format
[10:43] <eroomde> and don't have gps decoders onboard
[10:43] <eroomde> the ground processing is much more complicated
[10:43] <Beam_balloon> a balls
[10:44] <Beam_balloon> o*
[10:44] <eroomde> have a look at Pi in the Sky if you're in a massive hurry for a school project
[10:44] <Beam_balloon> okay thanks
[10:44] <Beam_balloon> will do
[10:44] <Beam_balloon> I have like a month or five I think
[10:44] <Beam_balloon> probably more
[10:45] <Geoff-G8DHE-M> What exactly do you want to fly ? Cameras or just sensors ?
[10:45] <eroomde> 5 months is enough time to build something from scratch :)
[10:45] <eroomde> in the time since we last spoke you could have bought an arduino and got an led flashing and be doing your first experiments with pwm on an ntx2
[10:45] <eroomde> as that was like 7 days ago
[10:46] <Beam_balloon> i know
[10:46] <tweetBot> @daveake: Great write-up of one of the #skycademy HAB flights #UKHAS https://t.co/bk80KygEZ5
[10:46] <Beam_balloon> it;s just that its all so difficult and i subconciously want to take the easy way out
[10:46] <Beam_balloon> it's really stupid but still
[10:46] <RealBorg> eroomde, how much did you pay for it?
[10:46] <eroomde> like £100?
[10:46] <eroomde> Beam_balloon: buy a PITS
[10:46] <eroomde> get it working
[10:47] <eroomde> should take 20 mins or so
[10:47] <Beam_balloon> okay
[10:47] <Beam_balloon> what exactly is it?
[10:47] <eroomde> then knowing that you have an insurance policy from the PITS, have a go at DIY
[10:47] <eroomde> if they both work by the time of flight, fly both
[10:47] <Beam_balloon> okay
[10:47] <eroomde> if your DIY one doesn't, you can still fly the pits
[10:47] <Beam_balloon> i see
[10:47] <Beam_balloon> thats a really good one
[10:47] <eroomde> PITS = pi in the sky
[10:47] <Beam_balloon> i see
[10:48] <Beam_balloon> i'm sometimes a bit stupid when I'm stressed out
[10:48] <eroomde> an opff-the-shelf balloon tracking system based around a raspberry pi and the gps and radios we ususally use for hab
[10:48] <Beam_balloon> but it's ok
[10:48] <Geoff-G8DHE-M> See the tweet link above for how to it in two days ... with some help ;-)
[10:48] <Beam_balloon> okay
[10:48] <Beam_balloon> thanks geoff will do
[10:48] <Beam_balloon> dude all of you are going to make a way into my paper I promise
[10:48] <eroomde> unfortunately richard hayler says 'styrofoam' but if you can get over that you might find it readable
[10:49] <Beam_balloon> hahaha yeah reading it right now
[10:49] <RealBorg> styrofoam? german guy?
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[10:51] <Beam_balloon> okay so here's another question I really need to ask XD: how exactly do I hook up the PITS? I'm guessing there's the obvious way but I still want to know for sure before I buy it
[10:51] <Beam_balloon> you understand :)
[10:51] <daveake> PITS is a HAT-type board for the Pi
[10:52] <infaddict> Beam_balloon: 5 months is more than enough time to get a custom tracker ready and tested. I did it in about that but was really slow and only working a few hours a week on it.
[10:52] <daveake> So it plugs in on top of the Pi
[10:52] <daveake> then you install software on the SD card
[10:52] <Beam_balloon> okay so I need to buy a Pi as well
[10:52] <daveake> the result is a gps/radio tracker; gps in radio out
[10:52] <Beam_balloon> thats good
[10:52] <daveake> Er yes otherwise it's be "useless thing in the sky"
[10:52] <Beam_balloon> hahaha yeah i understand
[10:53] <Beam_balloon> it's just I'm a bit fuzzy about how exactly the thing will hook up and what programs I use on my own PC (if any) and all the basic stuff pretty much
[10:53] <Beam_balloon> this is my very first project so its back to basics
[10:53] <eroomde> have you read daveake's guide on his blog?
[10:53] <eroomde> it explains all this
[10:54] <eroomde> he will link it within the next 4 seconds, i predict and hope
[10:54] <Beam_balloon> hahaha thanks
[10:54] <chimpusmaximus> Not wanting to confuse matters but would a Habduino be better than the pits. If your going to attempt to do some of it yourself along side it would be similar to the actual hardware you might use.
[10:54] <daveake> http://www.daveakerman.com/?p=1732
[10:54] <Beam_balloon> thank you
[10:54] <daveake> ^ read that
[10:54] <eroomde> chimpusmaximus: sure
[10:54] <daveake> more than 4; had to google first :/
[10:54] <eroomde> either/or
[10:55] <daveake> Yes if you don't need the live pix then Habduino will also do the job
[10:55] <daveake> if you've never use arduino or pi then it's a toss up which is easier
[10:56] <eroomde> habduino could probably do pix too if you cake fsphil enough diet coke
[10:56] <eroomde> gave fsphil*
[10:56] <daveake> and cake
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[10:57] <SpacenearUS> New vehicle on the map: 03Toyota herrier WPB3189_chase - 12http://tracker.habhub.org/#!qm=All&q=Toyota%20herrier%20WPB3189_chase
[10:58] <SpacenearUS> New vehicle on the map: 03Nissan Fairlady Z JPK 23_chase - 12http://tracker.habhub.org/#!qm=All&q=Nissan%20Fairlady%20Z%20JPK%2023_chase
[10:58] <SpacenearUS> New vehicle on the map: 03BMW 5SERIES JPS23_chase - 12http://tracker.habhub.org/#!qm=All&q=BMW%205SERIES%20JPS23_chase
[11:03] <fsphil> just add uart jpeg camera
[11:04] <fsphil> the avr is not fast enough to read from cheap cmos cameras sadly
[11:04] <daveake> ^ most inappropriate use of the word "just" ever :p
[11:04] <chimpusmaximus> Might of interest to someone. Some pics of camera mounts for my hab payload. Looking at Sony RX100 and a gopro 4 i first wanted something that would allow me to easily mount the cameras without just sticking them in place. Also the external power option on the RX100 comes out the bottom so needed someway to lift the unit up. https://goo.gl/photos/rmggZeh1ECemDDBp6
[11:05] <daveake> aha :-) I'm waiting for Upu to 3D-print something for me :)
[11:06] <chimpusmaximus> Dave, you need anything just send it over.
[11:06] <eroomde> nice work chimpusmaximus
[11:06] <daveake> cheers I know what I want just need to draw it up
[11:06] <eroomde> i still think you're a brave man flying such a nice camera :)
[11:07] <daveake> ^ second most inappropriate use of the word "just" ever :p
[11:08] <chimpusmaximus> Gopro mount is only 6.4g with velcro.
[11:08] <chimpusmaximus> eroomde: What can go wrong lol
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[11:12] <chimpusmaximus> did do some playing with a HAB filler design.https://goo.gl/photos/WoF4mMWFnoHBa9T37 Started with one from http://www.thingiverse.com/thing:367038
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[11:39] <SpacenearUS> New position from 03HB9FDK-11 after 0312 hours silence - 12http://tracker.habhub.org/#!qm=All&q=HB9FDK-11
[11:42] <fsphil> HB9FDK-11 just seems to be scribbling over the map
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[12:27] <SpacenearUS> New vehicle on the map: 03KZN-HAB1 - 12http://tracker.habhub.org/#!qm=All&q=KZN-HAB1
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[12:40] <HB9RSU> there should be a test page on the tracker where the non approved flights and chaser are diplayed for testing. So they do not pollute the real tracker page
[12:45] <SA6BSS-Mike> they are just on the tracker for a hour before they disappear, so no problem realy
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[12:51] <HB9RSU> or at least hide it in the sidebar so it does not appear on the map
[12:53] <craag> People can filter the map if they want
[12:53] <craag> So don't worry about it
[13:06] <eroomde> amusing convo at work, my colleague Iain vs customer's combustion CFD specialist
[13:07] <eroomde> iain said with maximal disdain to a suggestion of some nozzle behaviour, "er, that is a *very* 'i've just done a steady flow simulation' answer you've given me'
[13:07] <eroomde> to which james then wrote 'thug life' on a sheet of paper and held it behind his head
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[13:09] <eroomde> HB9RSU: trying a water spray ring sound suppression thing we made this afternoon https://www.dropbox.com/s/sx2l9m3ttf9o2gk/2015-09-03%2012.13.43.jpg?dl=0
[13:09] <eroomde> 4:1 mass flow ratio of water to propellants
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[13:18] <craag> That photo looks a lot like two people staring down the business end of a very large water pistol..
[13:19] <eroomde> which would be correct
[13:19] <eroomde> although with the engine on it will be a lot of steam coming out
[13:38] <SM0ULC> eroomde: for how long do you run the engine?
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[14:42] <HB9RSU> we have that too :-)
[14:42] <HB9RSU> http://www.spl.ch/news/10kN-Tests_2011.09.17/Water_Injection.jpg
[14:43] <HB9RSU> nice work
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[14:45] <eroomde> we're going to try some wedges at some point if we get a minute to fabricate something
[14:46] <HB9RSU> cannot recall how many dB we reduced the noise, but it was noticeable
[14:46] <HB9RSU> we have that too :-))))
[14:47] <HB9RSU> http://www.spl.ch/news/10kN-Tests_2011.09.17/shock_edges.jpg
[14:48] <HB9RSU> you have to cool them *very* well though
[14:48] <eroomde> yes the shock idea was from your site!
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[14:48] <eroomde> we can make cooled stuff, that's no problem
[14:50] <HB9RSU> ICMB silos and submarines used such wegdes (circular ones)
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[14:54] <SpacenearUS> New vehicle on the map: 03VE2ESM-11 - 12http://tracker.habhub.org/#!qm=All&q=VE2ESM-11
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[15:37] Nick change: fl_0|afk -> fl_0
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[16:26] <eroomde> HB9RSU: that worked quite nicely!
[16:26] <eroomde> need to do more methodical testing but to a fast pass, knocked about 10dB off
[16:27] <eroomde> also
[16:27] <eroomde> I AM A GOD! SEE AS I MAKE HUGE CLOUDS AND DESPAIR
[16:29] <Geoff-G8DHE-M> Well I hope you filmed it!
[16:29] <Geoff-G8DHE-M> Otherwise it just didn't happen ;-)
[16:29] <eroomde> the suicide gopro got something
[16:29] <eroomde> but couldn't really capture the fact that it blast clouds about 50m into a field before they started taking off into the sky
[16:29] <eroomde> haven't got fottage off the 5D yet
[16:30] <Geoff-G8DHE-M> :)
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[16:59] <chimpusm_> coming to conclusion that Gopro Hero 4 Black is pants.
[16:59] <chimpusm_> or at least it is today....
[17:00] <eroomde> gopros do seem a little flakey
[17:00] <eroomde> worth looking at the other action cams on t'market
[17:00] <eroomde> adamgreig: this is wonderful: http://horseysurprise.tumblr.com/
[17:01] <eroomde> a sort of henry-root letters for our age
[17:01] <chimpusm_> Had it working fine with a lexar 64gb card and external power...
[17:02] <chimpusm_> Now lucky to keep it running 15 minutes.. Changed power source to see if thats it but don't make logical sense...
[17:02] <eroomde> same card?
[17:04] <chimpusm_> nah.. lost my nice lexar 64gb on last flight... upgraded to a 128gb at huge expense... Normaly when its sd card it comes up with sd card error.. this time its just shutting down like power is cut..
[17:04] <chimpusm_> It may and just about to check the protection circuit on 18650 i was using.
[17:04] <daveake> 128GB isn't officially supported
[17:04] <daveake> They don't list any 128 models as known working
[17:05] <chimpusm_> yeah did see that but also seen many people having them run ok.
[17:05] <chimpusm_> Reason why i want to get it tested as much as possible. Had one or two sd cards sd error like anything on it.
[17:05] <daveake> If you do look at other makes, there's a very nice looking Sony, and I'm really pleased with the Panasonix EX A500
[17:06] <chimpusm_> Yeah if i had not got the hero 4 black for 249 then it would have been probably the panasonic.
[17:06] <daveake> Neither manufacturer lisst any 128GB cards
[17:06] <chimpusm_> ok
[17:06] <daveake> GoPros always seem to have flakey firmware when they come out
[17:07] <daveake> My 3 was rubbish till it got updated
[17:07] <chimpusm_> infact thinking about it i bloody did a firmware upgrade today.... v3
[17:08] <daveake> oh :/
[17:08] <daveake> My 3 wouldn't even switch on. I found a magic incantation which I went through about 20 times till eventually it powered up and loaded new firmware
[17:08] <chimpusm_> voltage of battery seems fine but i wonder if current draw drops the voltage and protection kicks in.. i doudt it but might have to try and monitor voltage
[17:08] <daveake> after that, fine
[17:08] <chimpusm_> :-)
[17:12] <chimpusm_> 14 minutes so far...
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[17:19] <chimpusm_> 18 minutes and off. Will try back with just gopro battery.
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[18:28] <Lunar_Lander> evening
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[18:40] Nick change: fl_0 -> fl_0|afk
[18:42] Nick change: fl_0|afk -> fl_0
[18:58] <SpacenearUS> New position from 03PYSY after 03a day silence - 12http://tracker.habhub.org/#!qm=All&q=PYSY
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[19:12] <ntx2> hello
[19:13] <ntx2> I am making the payload antenna. It says on the wiki - The length of the coax from the SMA plug to the start of the antenna isn't important though its suggested its kept as short as possible.
[19:13] <ntx2> how short should it be?
[19:13] <ntx2> in my payload, it looks like the length from start of antenna to SMA plug might be about 10 cm
[19:14] <ntx2> is that too long?
[19:14] <daveake> The length isn't important
[19:14] <ntx2> oh ok
[19:15] <daveake> just make it a comfortable length so you can move the tracker etc
[19:15] <ntx2> ok thanks. that is good to know
[19:15] <ntx2> I was nervous that 10 cm might be too long
[19:15] <SpacenearUS> New vehicle on the map: 03PYSYchase - 12http://tracker.habhub.org/#!qm=All&q=PYSYchase
[19:15] <daveake> There's some loss of signal in the cable but unless it's metres long nobody will notice
[19:16] <ntx2> ok that is good to know
[19:16] <ntx2> another question
[19:17] <ntx2> is there someway to do a dry run of data upload from my payload into the HAB server to confirm that I have done everything right?
[19:17] <daveake> yes of course just do the same as a flight, but without the flight bit
[19:18] <ntx2> meaning?
[19:18] <ntx2> I receive the data from my payload into dl-fldigi
[19:19] <ntx2> which I have already done
[19:19] <Geoff-G8DHE> Put your tracker somewhere where it can pickup up GPS, then tune in with dl-fldigi and if it all works it qill appear on the map.
[19:19] <daveake> You need a payload document
[19:19] <daveake> you need dl-fldigi in online mode
[19:20] Nick change: fl__0 -> fl_0
[19:20] <daveake> all these are things you need to do for an actual flight, which was my point earlier
[19:21] <Geoff-G8DHE> but no need for Flight Doc.
[19:22] <ntx2> thanks
[19:22] <ntx2> I see this page: http://habitat.habhub.org/genpayload/
[19:22] <ntx2> I am going to use it
[19:22] <ntx2> makes sense
[19:24] <Geoff-G8DHE> If the data doesn't show up then you will also need the logtail on the same page
[19:24] <ntx2> logtail?
[19:24] <daveake> logtail
[19:24] <daveake> on the same page
[19:24] <daveake> It's a log
[19:24] <daveake> shows good/bad uploads
[19:25] <daveake> so if you're not on the map that's the first place to look (assuming dl-fldigi is happy, online, and you have gps)
[19:30] <ntx2> got it
[19:31] <Geoff-G8DHE> oops HABHam is swimming for his life!
[19:31] <ntx2> there is a part on the payload document about "When without a lock, it sends"
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[19:31] <ntx2> so that is what the message should be if there is no GPS lock?
[19:32] <ntx2> so I should configure my telemetry string to send something if there is no lock?
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[19:33] <Geoff-G8DHE> Opinions vary, some send last position but zero sats some send something totally different
[19:34] <ntx2> I saw the options in the document
[19:34] <Upu> send 0's
[19:34] <ntx2> is sending 0,0 an acceptable way to do it
[19:34] <ntx2> ?
[19:34] <Upu> yes
[19:34] <Upu> 0 sats
[19:34] <ntx2> I see ....thanks
[19:34] <daveake> just don't stop sending the last known position
[19:34] <Upu> yeah
[19:36] <ntx2> I was reading the NMEA format and it says that there is a value for GPS log. So I read that value and if it indicates no lock, I send 0s
[19:36] <ntx2> wait...I am confused
[19:36] <ntx2> it should keep sending last known position also?
[19:37] <ntx2> should it send 0s or last known position?
[19:37] <Geoff-G8DHE> Yes because it might be very low and lose sat lock and then even if nobody else picks it up when you get close you will with the last position
[19:38] <Geoff-G8DHE> So send last received Lat, Long, Alt and set zero to the Sats field
[19:38] <ntx2> so there should be a satellite lock field in the telemetry string
[19:39] <ntx2> currently I do not have one but I can add it
[19:39] <Geoff-G8DHE> You don't have to have it but its very handy for the above
[19:39] <ntx2> makes sense
[19:39] <Geoff-G8DHE> then once Rx you know what is happening, rather than missing the fact that the Lat Long hasn't changed for 20 minutes ;-)
[19:40] OZ1SKY_Brian (~Brian@x1-6-e8-fc-af-95-86-7a.cpe.webspeed.dk) joined #highaltitude.
[19:40] <OZ1SKY_Brian> hi
[19:41] <OZ1SKY_Brian> video clips from last nights launch, its possible to pan in the videos http://www.dr.dk/nyheder/viden/rumrejsen/dr360-styr-selv-drs-roterende-kamera-i-28-kilometers-hoejde
[19:42] <ntx2> thanks
[19:47] <Lunar_Lander> OZ1SKY_Brian, NICE!
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[20:40] <DutchMillbt> Hi we created a flight document for the HABNL-4F flight, can i be approved?
[20:40] <Upu> sure
[20:40] <Upu> whats the docid pls ?
[20:40] <DutchMillbt> Hi Upu thankz
[20:40] <DutchMillbt> one sec..
[20:41] <Upu> 7ca7e5d98df75aa87e63d75e42f2ec5d
[20:41] <Upu> done have a good flight
[20:42] <DutchMillbt> Yep thankz Upu
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[20:46] <OZ1SKY_Brian> would it be possible to add souyz to the satellite tracker?
[20:51] <Upu> yup
[20:51] <Upu> there is a sat tracker
[20:52] <Upu> ping lz1dev
[20:52] <Upu> I forgot the link
[20:52] <DutchMillbt> Upu we did a post on the UKHAS maillist also, can you approve this post or should someone else do this?
[20:52] <OZ1SKY_Brian> you mean http://spacenear.us/sats/ ?
[20:52] <Upu> done
[20:52] <Upu> ah yes
[20:55] <OZ1SKY_Brian> just wondering if its possible to keep track of Soyuz, it dones along of orbital changes and if the TLE is abit delayed, it will not show the correct track.
[20:55] <OZ1SKY_Brian> it does alot, it shound say
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[21:05] <Upu> lz1dev is the chap to speak too
[21:06] <OZ1SKY_Brian> ok thanks upu
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[21:10] <OZ1SKY_Brian> gn all
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[21:22] <jonsowman> :q
[21:22] <jonsowman> oh my goodness
[21:22] <Upu> strike 2
[21:22] <jonsowman> i clearly need to go to bed
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[21:51] <ntx2> whats a good place to start if I want to learn how to calculate balloon size, helium qty needed for my payload?
[21:52] <fsphil> http://habhub.org/calc/ is useful
[21:53] <ntx2> thanks
[21:53] <ntx2> whats the balloon mass to use in the calculator?
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[21:57] <esculca> hi everyone
[21:57] <esculca> can someone give me some help on ssdv
[21:57] <esculca> ?
[21:58] <ntx2> you should go ahead and ask the question
[21:58] <esculca> I am using some of the code from fsphill
[21:59] <esculca> I am able to obtain the hex data from the serial camera
[22:00] <esculca> and feed it in chunks of 32 bytes to the state machine fsphill created
[22:00] <esculca> the thing is that the generated 256 byte packet is strange
[22:00] <esculca> it starts with 0x55 0x66
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[22:01] <esculca> but the remaining fields are strange
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[22:01] <esculca> for instance
[22:01] <esculca> the callsign I am using is «BALL»
[22:01] <esculca> and it gets codified as 01 98 7F 00
[22:02] <esculca> strange
[22:02] <esculca> don't really know if it is ok or not
[22:03] <esculca> and then the image id starts with 01, then 11, then 21, 31,41... etc
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[22:03] <esculca> even more strange
[22:03] <esculca> any hint?
[22:05] <Laurenceb__> anyone here involved in rocketry (high power)?
[22:05] <Laurenceb__> I'm after a UK supplier of aerotech kit
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[22:11] <esculca> no suggestions?
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[22:15] <Laurenceb__> sorry
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[22:19] <esculca> does anybody has an example file that has some of those 256 bytes packets?
[22:25] <fsphil> esculca: the callsign is not stored as ascii
[22:25] <esculca> yes
[22:25] <esculca> it is stored as base 40
[22:25] <esculca> but really
[22:25] <esculca> BALL gets converted in 01 98 7f 00?
[22:25] <esculca> (BALL is mu CALLSIGN)~
[22:26] Nick change: fl_0 -> fl_0|afk
[22:28] <fsphil> 0019087F
[22:28] <esculca> something is twisted here
[22:29] <esculca> big endian, little endian?
[22:29] <fsphil> MSB first
[22:29] <esculca> I don't get it...
[22:30] <fsphil> your header should be 55 66 00 19 08 7F
[22:30] <fsphil> for callsign BALL
[22:30] <esculca> so, why is 55 66 01 98 7F 00?
[22:31] <esculca> that is a question for myself...
[22:31] <esculca> :)
[22:31] <fsphil> how are you sending it?
[22:32] <esculca> rtty
[22:32] <fsphil> receiving in dl-fldigi?
[22:32] <esculca> but I printing it in the serial console of the arduino
[22:32] <fsphil> ah
[22:32] <esculca> the transmitting arduino
[22:32] <esculca> arduino mega
[22:32] <esculca> any ideia?
[22:33] <fsphil> looks like your hex values are missing characters
[22:34] <esculca> correct...
[22:34] <esculca> makes sense
[22:34] <fsphil> maybe a bug in the code that's printing it
[22:35] <esculca> but at the fldigi I can't ger anything as well
[22:35] <esculca> I can't get anything
[22:35] <esculca> I don't even get the callsign
[22:36] <fsphil> actually looks like you're not padding the hex value
[22:36] <esculca> yes... i agree
[22:36] <fsphil> so it's printing 00 as 0, and 08 as 8
[22:36] <fsphil> so if you send those 256 bytes through rtty it should print some garbage on dl-fldigi
[22:37] <fsphil> the 0x55 0x66 part will appear as "Uf"
[22:37] <esculca> inde3ed
[22:37] <esculca> i GET THOSE UF ALL THE TIME
[22:38] <fsphil> are you using dl-fldigi or fldigi?
[22:38] <esculca> but the callsign I should receive it correctly
[22:38] <esculca> coz it is generated by the function ssdv_enc_init
[22:38] <esculca> right?
[22:38] <fsphil> the callsign won't get printed in the dl-fldigi text window as it's not ascii
[22:39] <fsphil> it will print some information about the packet if it successfully decodes all of it
[22:39] <esculca> oh ok
[22:39] <fsphil> but you need to be using dl-fldigi
[22:39] <fsphil> the regular fldigi doesn't have an ssdv decoder
[22:40] <esculca> I am using dl-fldigi
[22:40] <esculca> and I havethe SSDV RX window open
[22:40] <esculca> I Cannot even get the callsign correctly
[22:40] <esculca> Actually I can't even get anything on the callsign
[22:41] <esculca> that field is allways empty
[22:41] <fsphil> it will be empty until it decodes a packet
[22:42] <esculca> ok, I understand
[22:42] <fsphil> http://www.sanslogic.co.uk/ssdv/ssdv-sample-20120916.zip
[22:42] <fsphil> that zip has an example wav file of some ssdv rtty
[22:43] <esculca> i tested that one already
[22:43] <fsphil> did it decode?
[22:43] <esculca> yes
[22:43] <fsphil> your rtty code, are you able to transmit normal text?
[22:43] <esculca> yes, that works perfectly
[22:44] <esculca> 50 bps
[22:44] <esculca> 425 MHz as shift
[22:44] <esculca> etc
[22:44] <fsphil> are you using the same function to transmit the ssdv packets?
[22:44] <esculca> yeap
[22:44] <fsphil> check that it's sending all 256 bytes. it may be ending when it sees a 0x00
[22:44] <esculca> humm...
[22:45] <esculca> let me check that
[22:46] <esculca> uint8_t vs char?
[22:47] <fsphil> that shouldn't matter
[22:53] <esculca> regarding the padding I think I solve it now
[22:53] <esculca> for the console
[22:54] <esculca> I mean, I Can know see 55660019087F000000140F020000008A8A420A
[22:54] <fsphil> looks good
[22:55] <esculca> the call sign has 6 bytes, right?
[22:55] <fsphil> 4
[22:55] <esculca> hummm
[22:57] <SpacenearUS> New vehicle on the map: 03Habnl-4f-herman_chase - 12http://tracker.habhub.org/#!qm=All&q=Habnl-4f-herman_chase
[22:58] <esculca> 55 66 0019087F 00 0000 140F020000008A8A420A5A0029C0D002D282690C764D28A005069734006693750026FA4DE7D68010B134DDC7D68013752668010D30D30145385002D06900C6A6734C03268ED40080D2350030D31BA5022334F8CF18A621817CDD3AE6DCFDE81BCC4FF74F5ACB35448D34940CE9E8A82828A005A5A0070A5A4316941A005CD26680109A696A00693499A005CD140C28A00434D34C414A2801683480434C34C06D2D0034D25002114C22811191CD2AF14C411B087508D9BFD5CA0C6FF435993C4619A488F546229A27AFF444692
[22:58] <esculca> sorry
[22:58] <esculca> I shouldn't have pasted this in here
[22:59] <esculca> looks like the image id field is incrementeing at each 256 byte packet
[22:59] <fsphil> packet id qill, the 16-bit one
[22:59] <fsphil> will*
[23:00] <fsphil> 320x240 image
[23:00] <fsphil> looks fine
[23:00] <esculca> yes, I agree
[23:01] <fsphil> just make sure you are sending all 256 bytes over rtty, with no gaps between characters
[23:01] <esculca> but I can't get in on the screen
[23:01] <esculca> no gaps?
[23:01] <esculca> what do u mean?
[23:02] <esculca> interrupts?
[23:02] <fsphil> each byte must be send immediatly after the previous one
[23:03] <fsphil> if there is too long a gap, the decoder assumes one or more bytes where lost and pads it out
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[23:03] <esculca> should I use 300 bps instead of 50 bps?
[23:04] <fsphil> your fldigi settings must match whatever your payload is sending
[23:05] <esculca> that's what I have
[23:06] <esculca> let me go back to the .wav file
[23:06] <esculca> and check the decoder
[23:06] <fsphil> can you pastebin the code that sends the packet
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[23:07] <SpacenearUS> New vehicle on the map: 03TUX-Chase_chase - 12http://tracker.habhub.org/#!qm=All&q=TUX-Chase_chase
[23:08] <SpacenearUS> New vehicle on the map: 03HABNL-4F-TUX_chase - 12http://tracker.habhub.org/#!qm=All&q=HABNL-4F-TUX_chase
[23:10] gb73d (~gb73d@81-178-182-63.dsl.pipex.com) joined #highaltitude.
[23:10] <fsphil> late here, need sleep :) g'nite!
[23:10] <esculca> thanks fsphil
[23:10] <esculca> I will keep on working in here
[23:10] <esculca> late here too
[23:11] <esculca> but I will keep a little more
[23:11] <russss> I hooked the rad1o (aka hackrf) up to a decent HF antenna today https://usercontent.irccloud-cdn.com/file/u6P077iL/
[23:11] <russss> that kind of blew my mind
[23:11] <russss> (that was with an upconverter)
[23:15] <adamgreig> it's amazing right
[23:15] <adamgreig> what always gets me is how much more 10MHz of bandwidth means at HF than UHF
[23:15] <adamgreig> up at UHF it's like barely half a wifi channel
[23:15] <adamgreig> at HF it's like... the entire HF spectrum
[23:15] <adamgreig> hundreds of people chatting
[23:15] <adamgreig> ok maybe tens
[23:15] <russss> yeah
[23:16] <adamgreig> have you used fosphor?
[23:16] <adamgreig> osmocom_fft -F
[23:16] <russss> yeah I've looked at it
[23:16] Strykar (~wakkawakk@122.169.33.80) joined #highaltitude.
[23:16] <adamgreig> I'm currently having fun writing rust SDR DSP code for my radio
[23:17] <adamgreig> by 'fun' i mean "rust, how does it even"
[23:17] <russss> hah
[23:17] <adamgreig> it's Quite Nice in all the ways that C is bad and annoying
[23:17] <adamgreig> but... it's rubbish in those special ways that make C such an enduring lovable language
[23:18] <russss> I found the HF aircraft frequencies which was kind of fun
[23:18] <adamgreig> nice
[23:18] <adamgreig> what sort of range did you get?
[23:19] <russss> difficult to tell, pilots are pretty terse
[23:19] <russss> but I assume they were already over the atlantic at that point
[23:19] <adamgreig> neat
[23:19] <adamgreig> I want one of these for HF https://www.rohde-schwarz.com/en/product/hl451-productstartpage_63493-9051.html
[23:19] <adamgreig> 2 to 30MHz in "extremely small dimensions"
[23:19] <russss> that's with our pretty low to the ground G5RV semi-dipole at London Hackspace
[23:23] <russss> https://github.com/miek/inspectrum is written by a friend, not used it yet
[23:23] <russss> we're looking at one of those "cobweb" style antennas for LHS
[23:23] <russss> we have an "almost operational, honest" 30m trailer mast
[23:26] <adamgreig> heh
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[23:27] <adamgreig> any day now
[23:28] <russss> someone took the segments out and then someone else stood on one, which resulted in it getting bent
[23:29] ike2 (~ike@93.123.14.33) joined #highaltitude.
[23:29] <russss> but thankfully someone else had the means to un-bend it because hackspace
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[23:30] <russss> in other news, this morning I inadvertently volunteered to get a Lucent GPS-disciplined high-precision oscillator working. Because hackspace.
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[23:34] <adamgreig> ah yes, hackspace :p
[23:35] <russss> there's an interesting surplus of these things recently, and there's quite a lot of documentation on http://syncchannel.blogspot.co.uk/
[23:35] <adamgreig> got anything in mind for it?
[23:36] <russss> well, definitely NTP, but it also has a 10MHz output and it'll live by the radio gear :)
[23:37] <adamgreig> always handy
[23:37] <russss> also precision timesources are cool
[23:37] <adamgreig> seems a bit overkill for ntp
[23:37] <adamgreig> oh yes, absolutely
[23:37] <adamgreig> s/ timesources//
[23:37] <russss> there's an entire mailing list for it https://www.febo.com/pipermail/time-nuts/
[23:38] <adamgreig> I got access to the metrology labs a couple years back
[23:38] <adamgreig> glorious
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[23:43] <Laurenceb__> adamgreig: do you know a UK aerotech supplier?
[23:44] <adamgreig> hmm no but maybe malcolm?
[23:44] <Laurenceb__> hehe
[23:44] <Laurenceb__> thats what I was fearing
[23:44] <adamgreig> he can probably acquire them
[23:44] <Laurenceb__> yeah, hes just a bit disorganised
[23:44] <Laurenceb__> at least hes pleasant on the phone
[23:47] <Laurenceb__> ok thanks
[23:47] <Laurenceb__> the aerotech single use motors look amazing - very good mass fraction
[23:47] <adamgreig> yea
[23:47] <adamgreig> we've used them for various things for those reasons
[23:48] <Laurenceb__> cool
[23:48] <adamgreig> assembly and ignition is more of a pain than cesseroni
[23:48] <adamgreig> no pyrogen in the grain, just on igniter, iirc
[23:49] <Laurenceb__> my sim and openrocket both give 36km to 145km with no motor mods
[23:49] <Laurenceb__> hmm thats annyoing
[23:54] Nick change: ike2 -> ike
[23:58] <Laurenceb__> ok thanks
[23:59] Action: Laurenceb__ zzz
[00:00] --- Fri Sep 4 2015