highaltitude.log.20150911

[00:04] <SpacenearUS> New vehicle on the map: 03test-1_chase - 12http://tracker.habhub.org/#!qm=All&q=test-1_chase
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[05:11] <SpacenearUS> New position from 03HB9FDK-12 after 033 days silence - 12http://tracker.habhub.org/#!qm=All&q=HB9FDK-12
[05:17] <SA6BSS-Mike> wow its in China heading for Korea / Japan
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[05:27] <bobsaget> who is this crazy flying over Beijing ??
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[06:17] <HB9RSU> I am not sure it's real... there were many incarnations of HB9FK the last days
[06:32] <Vaizki> that's quite strange
[06:34] <Vaizki> http://aprs.fi/#!mt=roadmap&z=11&call=a%2FHB9FDK-12&timerange=604800&tail=604800
[06:34] <Vaizki> apparently many igates along the way have caught HB9FDK-12
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[06:35] <Vaizki> you can see them on the map there.. but this latest jump to beijing is not likely to be real
[06:36] <Vaizki> 2015-09-08 09:26:11 EEST: HB9FDK-12>APSTM1,qAR,RW4HIF-10:!/37(PZ03mOYBV|$9O5'M+RNN!"|
[06:36] <Vaizki> 2015-09-11 08:11:36 EEST: HB9FDK-12>APSTM1,qAS,BY1WJ:!/:;E:klq\OYMV|!0Mn'F+4NM!"|
[06:37] <Vaizki> hmm actually it's possible? 3 days from Samara, Russia to Beijing.. with no igating during that time :O
[06:43] <SpacenearUS> New position from 03SR0FLY after 03a day silence - 12http://tracker.habhub.org/#!qm=All&q=SR0FLY
[06:52] <HB9RSU> 8000m is also a bit low. That could make the CHinese nervous
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[07:23] <bobsaget> its real :)
[07:24] <bobsaget> gonna make north korea even more nervous lol
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[07:44] Nick change: fl_0|afk -> fl_0
[07:49] <HB9RSU> Hi FDK...
[07:56] <HB9FDK> RSU
[07:57] <HB9FDK> Good morning
[07:57] <fsphil> HB9
[07:58] <HB9FDK> HB9RSU
[07:58] <HB9RSU> Is your balloon realy over Beijing?
[07:58] <HB9FDK> Yes really
[07:58] <HB9RSU> cool :-)
[07:58] <HB9FDK> My simulated flights were in a circle
[07:58] <HB9FDK> and > 1 week ago
[07:59] <HB9FDK> yeah that one likes capital cities.
[07:59] <HB9FDK> Belgrade and then Beijing
[07:59] <HB9RSU> like Pyongyang? ;-)
[07:59] <HB9FDK> Next up.
[08:00] <HB9FDK> I don't know why APRS range is so bad now. Only one single igate received it.
[08:01] <HB9FDK> Where in CH are u located? I am in ZH (Well obvious)
[08:01] <HB9RSU> different default frequencies in Asia I guess
[08:01] <RealBorg> north korea? https://www.youtube.com/watch?v=mCe8iai-SRs
[08:02] <HB9FDK> It should change frequency by location. If I got all the regions right.
[08:02] <HB9RSU> Bern here, we flew SPL1 2 weeks ago with some lovely footage
[08:02] <HB9FDK> Cool. is that in the net?
[08:03] <HB9RSU> only facebook yet. But this evening it will probably mentioned on RTL TV with some pics
[08:04] <HB9FDK> okay vy nice :-)
[08:04] <HB9RSU> what is the setting of your payload?
[08:05] <HB9FDK> it is a Peachflight aka Pico tracker wiht my own firmware
[08:06] <HB9FDK> same hardware as K6RPT uses, as far as I know
[08:06] <HB9FDK> Balloon is an off the shelf Qualatex 36er
[08:09] <HB9RSU> ok, I am thinking about a floater too. But I want to challange myself a bit by making the balloon by myself (Foil)
[08:09] <HB9FDK> yes!! I wanna join u in that.
[08:10] <HB9RSU> that would be nice!
[08:10] <HB9FDK> we are having those Qualatex at their limit. They are very reliable but fly a bit low
[08:12] <HB9RSU> and helium diffuses quite fast through it
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[08:17] <eroomde> too much HB9age, confusing
[08:19] <HB9RSU> ;-) Morning rocketman
[08:20] <eroomde> bonjour fusée-homme
[08:20] <eroomde> actually you might my german swiss in which case i have no idea what to say
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[08:43] <fliker09> hi everyone! i've recently bought a pi-in-the-sky board and got a question. it succesfully works on 300 baud. but no luck with 600 and 1200 (i use dl-fldigi). has anybody tried such baudrates?
[08:44] <chimpusmaximus> People have had success certainly at 600 baud. 300 baud seems to be typically used as the faster you try and transmit the more chance data is missed.
[08:44] <eroomde> 600 should be ok, 1200 might be pushing it without adding some more error correction
[08:45] <eroomde> unless you really need faster than 300 i'd stick with that for basic flight telemetry
[08:46] <fliker09> i am using ssdv and would like to see faster speeds of transmission. when using 600 baudrate, is there anything to change in dl-fldigi except the baudrate itself?
[08:46] <UpuWork> I wouldn't recommend 600 baud for flight
[08:46] <chimpusmaximus> Adding LoRa is one option that has been used more and more recently to get pictures back quicker.
[08:46] <UpuWork> it could be a little iffy
[08:46] <UpuWork> though it should work
[08:46] <daveake> The frequency shift isn't enough for 1200 so you'd have to mod the board slightly
[08:46] <UpuWork> and that
[08:47] <fliker09> But for 600 is the 600 frequency shift enough?
[08:47] <daveake> yes
[08:47] <UpuWork> don't use large images
[08:47] <UpuWork> you get the hires images back
[08:47] <fliker09> strange... i couldn't get anything yesterday with 600 baudrate
[08:47] <daveake> lora can do 1400 baud equivalent, so that's a better option
[08:47] <daveake> what receiver?
[08:47] <UpuWork> what are you recieving with ?
[08:48] <fliker09> icom wih a helix antenna and lna
[08:48] <UpuWork> helix ?
[08:48] <daveake> I had an AOR scanner that really didn't like 300 baud
[08:48] <UpuWork> interesting
[08:49] <UpuWork> I've never had much sucess with 600
[08:49] <UpuWork> like Dave says get the optional Lora board
[08:49] <fliker09> will take a look at her now
[08:53] <fliker09> yeah, one interesting thing found - if eternet is connected during the boot of the system with pits connected GPS fails to lock
[08:53] <fsphil> 600 baud rtty has been done fine
[08:53] <fliker09> *ethernet
[08:53] <fliker09> what was used for receiving? dl-fldigi?
[08:53] <fsphil> yeah
[08:54] <fliker09> strange...
[08:54] <fliker09> i tried yesterday and it failed
[08:54] <fsphil> you'll need at least 1.5 stop bits
[08:54] <fliker09> i set 2
[08:54] <fliker09> it's ok?
[08:54] <fsphil> that should be fine
[08:55] <daveake> ethernet shouldn't have anything to do with the GPS
[08:55] <fliker09> there is an instruction on pits site for 300 baud
[08:55] <fliker09> is there difference for 600?
[08:55] <fsphil> you have 300 working ok?
[08:55] <fliker09> Dave, it's a fact :)
[08:55] <fliker09> yes, 300 working fine
[08:56] <daveake> Get the GPS aerial nearer to being outside
[08:56] <fliker09> yes, did it, but ethernet connected during the boot clearly interfered with it
[08:56] <fliker09> i know how it sounds
[08:56] <fliker09> but...
[08:57] <fliker09> rpi b 2 bt
[08:57] <fliker09> *btw
[08:57] <daveake> All the dev is done with ethernet connected
[08:57] <fsphil> the only change you'd need in fldigi is the baud rate and filter bandwidth
[08:57] <fliker09> filter bandwidth is set auto
[08:57] <fliker09> it's ok?
[08:58] <fliker09> i can see it is set automatically to baudrate
[08:58] <eroomde> odd about ethernet
[08:58] <fliker09> it took me hours to figure out
[08:58] <daveake> I can't think of any conflict hardware or software
[08:59] <fsphil> RF leaking from the cable?
[08:59] <fliker09> may be...
[08:59] <fsphil> though the noise I normally see from ethernet is usually limited to VHF
[08:59] <eroomde> if it's coupling directly into the receiver module it doesn't really matter about the frequency
[08:59] <eroomde> or where the antenna is
[09:00] <daveake> I've never seen an issue with this and it's a setup I use all the time
[09:00] <fliker09> 2 switches tested - same result
[09:01] <HB9RSU> I had the same issue when plugged in wifi dongle
[09:01] <eroomde> tech support bingo - "it worked on the desk!"
[09:01] <daveake> :)
[09:01] <HB9RSU> but with ethernet it worked fine
[09:01] <eroomde> fsphil's idea about a cable sounds plausible
[09:01] <eroomde> can you get a shielded cat5?
[09:02] <eroomde> is their something like a cap coupling the shiled of the ethernet connector to a pcb ground, that might have come loose?
[09:02] <eroomde> oh actually it looks like they just connect it directly to ground at the big solder tabs
[09:03] <fliker09> more interesting - if a connect ethernet after GPS lock all good
[09:03] <eroomde> not sure i'd have done it like that myself
[09:03] <eroomde> gps is certainly more robust to noise once it has locked
[09:03] <eroomde> since the bandwidth for tracking is much smaller than for aquiring
[09:03] <daveake> fliker09 You said " if eternet is connected during the boot of the system" ... so have you tried booting with the cable then removing the cable to see if the GPS gets a lock? Or booting without and then inserting the cable?
[09:04] <daveake> ah ok you answered as I was typing
[09:04] <fliker09> if it has booted with cable GPS never gets locked
[09:04] <fliker09> even if i get out the cable
[09:04] <fliker09> after booting
[09:05] <eroomde> oh now that is strange
[09:06] <eroomde> suggests not interference but something else
[09:06] <fliker09> but t be honest i was getting cable out in several minutes after full boot
[09:06] <daveake> Enable GPS logging and take a look at the log file
[09:06] <fliker09> but isn't GPS all the time searching?
[09:06] <fliker09> yeah, i should fo that
[09:07] <fliker09> *do
[09:09] <eroomde> fliker09: exactly - it should keep trying to acquire a lock, so if you hypothesise that the cable being plugged in is blocking it, then removing the cable after any length of time should allow the gps to get a lock
[09:09] <eroomde> so if it isn't that suggests something weirder
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[09:10] <fliker09> agree
[09:10] <fliker09> info about lora is not that reach as pits
[09:12] <eroomde> ntx2 should be ok. there is not mad-keen enthusiasm for lora here as it's not a free protocol
[09:14] <gonzo_> I suspect that for a new protocol to be taken up widely, it needs to be decodable similarly to dl-fldigi
[09:15] <fliker09> ntx2 has no support in dl-fldigi?
[09:15] <eroomde> no it does, ntx2 is fine
[09:16] <eroomde> gonzo was talking about something else
[09:16] <eroomde> you're absolutely fine fliker09
[09:18] <fliker09> for aprs board there is a good page with explanations. is there smth similar for lora?
[09:21] <Geoff-G8DHE-M> There are some descriptions on daveake's blog
[09:22] <fliker09> good link would be nice
[09:22] <Geoff-G8DHE-M> http://www.daveakerman.com/
[09:23] <fliker09> i am blind or there is no search on dave's blog?
[09:24] <Geoff-G8DHE-M> nope you have to scroll thru :-(
[09:25] <Geoff-G8DHE-M> http://www.daveakerman.com/?p=1719
[09:26] <UpuWork> http://www.pi-in-the-sky.com/index.php?id=making-a-lora-tracker
[09:26] <UpuWork> http://www.pi-in-the-sky.com/index.php?id=making-a-lora-gateway
[09:28] <daveake> I've added a search box
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[09:34] <eroomde> this bit of engine someone is trying to remove uses an m14 bolt
[09:34] <eroomde> who the hell uses m14
[09:34] <eroomde> use m12 or m16 like a normal person
[09:34] <fsphil> at least it's an m*
[09:34] <eroomde> i don't like it when academic engineers are allowed to design hardware
[09:35] <lz1dev_> m12.5 :P
[09:35] <eroomde> don't even
[09:36] <fsphil> I mean, what the hell even is 1/4-20
[09:36] <fsphil> other than -19.75
[09:39] <gonzo_> thats UNF
[09:40] <gonzo_> half of my life is imperial
[09:41] <gonzo_> when working with old/US stuff you have to switch systems
[09:41] <fliker09> so, i get it right that for using lora you need 2 devices?
[09:42] <eroomde> yes
[09:42] <eroomde> it's a proprietary protocol so you (legally in theory) need a lora thing at either end
[09:42] <fsphil> there is some code to demodulate it in software but it's incomplete
[09:42] <daveake> ahve you tried that yet ?
[09:43] <fsphil> haven't
[09:43] <fliker09> one question for all - does anybdy use rotors, lna and antennas assembles for receiving?
[09:44] <eroomde> have done
[09:44] <eroomde> overkill for most hab stuff
[09:44] <UpuWork> yes to all fliker09
[09:44] <fsphil> all but the rotors here
[09:44] <eroomde> lna is a good idea (at the mast head) but the rest you probably don't need
[09:44] <fliker09> those for rotors - manual or automatic control? if second - what soft
[09:44] <gonzo_> ditto. But I had it already for other things
[09:44] <UpuWork> https://dl.dropboxusercontent.com/u/63720513/Images/HAM/Rotator/IMG_0796.JPG
[09:45] <eroomde> get automatic if you're going to the trouble
[09:45] <eroomde> life is too short otherwise
[09:45] <UpuWork> :)
[09:45] <eroomde> also you can see the balloons
[09:45] <eroomde> if you look down the antenna on a clear day you can see them like daytime stars
[09:45] <eroomde> but easy to miss them without
[09:46] <eroomde> our set-up at the time: https://www.flickr.com/photos/cuspaceflight/6270061927/in/album-72157627829326013/
[09:46] <fliker09> still not clear... has anybody tried auto-tracking with rotor? :)
[09:47] <eroomde> yes
[09:47] <fliker09> what software?
[09:47] <eroomde> wrote it ourselves
[09:47] <gonzo_> I have auto control if req, but tend to manually control. As if it';s far away to use the yagi it is not moving over much of an angle. And if close, then just switch to the omni
[09:47] <eroomde> grabbed a position from a previous version of the software that predated habhub
[09:47] <eroomde> figured out a pointing angle
[09:47] <eroomde> voila
[09:48] <fliker09> so you wrote your own piece of code?
[09:48] <eroomde> dl-fldigi will calculate all that for you now
[09:48] <eroomde> yes fliker09
[09:48] <eroomde> but nowadays dl-fldigi does it i think
[09:48] <gonzo_> my local poor hirison means that the pointing angle for max signal may not be actually at the balloon.
[09:49] <fliker09> i see no rotor control in dl-fldigi
[09:49] <fliker09> rig - yes, but rotor - no
[09:50] <eroomde> i might be mistaken then
[09:50] <Geoff-G8DHE-M> You need PstRotator and then an add on from craag habrotate-cli to send it the data
[09:50] <eroomde> either way it's not more than 10 minutes with python to make something to calc a pointing angle and spaff it over a serial port or whatever
[09:50] <fliker09> i now it's simple, just was curious
[09:50] <fliker09> :)
[09:51] <eroomde> looks like Geoff-G8DHE-M's answer is the right one
[09:51] <eroomde> i'm out of the loop a bit nowadays tbh
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[09:52] <Geoff-G8DHE-M> PstRotate will handle most rotaters and then habrotate talks to Habitat gets the current position and sends it to PstRtate
[09:53] <fliker09> it's shareware as i can see. i took a look at the habrotate-cli code
[09:54] <fliker09> it is very simple to adapt it for hamlib
[09:54] <Geoff-G8DHE-M> http://360.g8dhe.net/HAB_Flights/Capture11.JPG
[09:55] <fliker09> i will try to adapt habrotate-cli for hamlib, perfect solution for linux :)
[10:04] <fliker09> changed low_res to 160x120 and it stopped sending images. why?
[10:06] <daveake> SSDV image sizes have to be multiples of 16 pixels in each direction
[10:06] <daveake> That said unless you're using old pits s/w it fixes that for you
[10:07] <fliker09> thx, will check it now
[10:09] <fliker09> and 1.33 ratio, yes?
[10:09] <daveake> pits/ssdv don't care
[10:10] <fliker09> i tried 160x128
[10:10] <fliker09> no luck
[10:10] <daveake> Possibly a raspistill limitation then
[10:12] <eroomde> did you hear eben upton on something involving radio 4 and john loyd this week daveake?
[10:12] <eroomde> mysterious museum of curious monkeys in a cage, or something
[10:13] <daveake> nope
[10:13] <eroomde> he mentioned babbage's jump
[10:13] <daveake> I shall investigate, ta :)
[10:14] <eroomde> anyway the more amusing thing was that a bbc micro was still doing the pointing of the jodrell bank antenna until 2004
[10:14] <SpacenearUS> New vehicle on the map: 03vk3tbc-2_chase - 12http://tracker.habhub.org/#!qm=All&q=vk3tbc-2_chase
[10:14] <daveake> hah wow
[10:14] <eroomde> which pleased me a lot
[10:14] <eroomde> if it ain't broke
[10:14] <daveake> indeed
[10:15] <daveake> that comfortably beats the CBM Pet that was running a factory system in 1992
[10:15] <eroomde> :)
[10:15] <Darkside> makes our dec alphas seem positively modern
[10:15] <eroomde> i just like the idea of making stuff well enough that it should be good for decades
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[10:16] <daveake> They had a lightning strike which took out lots of kit in the factory, and managed to zap exactly 32 bytes in the Pet's battery-backed CMOS program memory
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[10:16] <eroomde> you could presumably desolder each of the 1-byte dip packages and replace them
[10:17] <daveake> I had to convert the tokenised program back to source, figure out which bytes had been hit, then patch the correct values back in
[10:17] <daveake> :)
[10:17] <daveake> (not my code, and nobody involved seemed to have the original source)
[10:17] <eroomde> yeah i can imagine
[10:17] <daveake> Fortunately mostly they were missing brackets and bad links
[10:18] <eroomde> i have an atmega running a very bomb-proof box i made that sequences the startup of the viper jet engine at rel
[10:18] <eroomde> it's the soprt of thing that will just sit out on a test rig for decades i imagine
[10:18] <eroomde> i printed and laminated the source and put it inside the lid of the enclosure
[10:18] <Darkside> did you print out a copy of the source code and put it in the box?
[10:18] <Darkside> hahahha
[10:18] <Darkside> nice
[10:18] <daveake> hah :)
[10:19] <eroomde> just for whichever monkey will be tasked with changing something in 2028
[10:19] <eroomde> my gift to them
[10:19] <eroomde> i hope they can find the correct gcc implementation
[10:19] <eroomde> i put the makefile and gcc version numbers in too
[10:20] <fliker09> yeah, it seems that 320x240 is the lowest supported resolution
[10:20] <daveake> OK, ta, I'll check for that in the code
[10:20] <fliker09> but here rise a question - pits make 2 shots with camera (low res and max res)?
[10:21] <daveake> configurable
[10:21] <daveake> you can set the size and period between images separately
[10:21] <daveake> including disabling either
[10:21] <fliker09> i see it in pisky.txt
[10:21] <fliker09> but i was supposing pits take max res image and downsample
[10:22] <fliker09> but you say i takes low res with cam itself
[10:22] <daveake> It could, but no advantage
[10:22] <daveake> well might save a teeny bit of power
[10:23] <fliker09> and overcome res limit
[10:23] <fliker09> :)
[10:23] <daveake> It can be done with the existing code ... you can supply a script that is run after each image is taken for SSDV
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[10:24] <fliker09> and this script will provide image for sending over radio?
[10:24] <daveake> yes it's intended to simply process the image ... e.g. to add an overlay
[10:25] <daveake> you can do what you like to the image
[10:25] <fliker09> where i can read how to do it?
[10:26] <daveake> In the pits source code on github :)
[10:26] <RealBorg> someone in here who has done high altitude model plane flights?
[10:27] <daveake> I have a sample script ... I'll add an article sometime soon
[10:27] <eroomde> mostly just talk RealBorg. There have been issues with airspace regulation that stop most from actually trying it
[10:27] <fliker09> waiting for it :)
[10:27] <daveake> It's going to get extended soon so the script gets told the current altitude, ascent rate etc, so it can overlay telemetry if it wants
[10:28] <daveake> Meanwhile, snapper.c contains the code that creats the camera scripts; edit that to your heart's content
[10:29] <fliker09> oops, i've run out of space, have to retest res again :)
[10:29] <fliker09> thx fo hint, will take a look!
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[10:34] <fliker09> would be cool to have timestamps in the log files
[10:35] <daveake> GPS and telemetry both have timestamps
[10:50] chris_99 (~chris_99@unaffiliated/chris-99/x-3062929) joined #highaltitude.
[10:59] <SpacenearUS> New vehicle on the map: 03vk3fadi_chase - 12http://tracker.habhub.org/#!qm=All&q=vk3fadi_chase
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[11:18] <SpacenearUS> New vehicle on the map: 03KZN-HAB1 - 12http://tracker.habhub.org/#!qm=All&q=KZN-HAB1
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[11:24] <chris_99> http://imgur.com/ky8kufU -- saw that on reddit
[11:29] <fliker09> awesome
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[11:33] <infaddict> anybody know what true curvature would look like at HAB height vs fish eye lenses?
[11:34] <eroomde> depends on the focal length but it's definitely visible with proper cameras
[11:34] <eroomde> with non-garbage go-pro lenses
[11:35] <chris_99> i don't think go-pro lenses are fisheye in general
[11:35] <fsphil> it's *just* visible in the images I got from the canon
[11:35] <fsphil> at about 30km
[11:36] <infaddict> mmm so that Go Pro shot is approx 32km but massive curve
[11:36] <fsphil> A380 I think the model was
[11:36] <fsphil> yea that's almost all lens distortion
[11:36] <mattbrejza> oh they used a gsm tracker and lost it for two years
[11:36] <UpuWork> lol
[11:36] <daveake> GoPros can show the curvature of the earth at head height
[11:36] <infaddict> ha!
[11:37] <eroomde> maybe we should just call it the curvature of the go pro
[11:37] bobg (1f348fd3@gateway/web/freenode/ip.31.52.143.211) joined #highaltitude.
[11:37] <infaddict> fsphil: any pics from that A380 flight?
[11:37] <bobg> hello
[11:37] <UpuWork> hi there bobg
[11:37] <bobg> Hi
[11:38] <bobg> I'm trying to use this API:
[11:38] <fsphil> infaddict: https://www.flickr.com/photos/fsphil/sets/72157626013096240
[11:38] <bobg> http://tawhiri.readthedocs.org/en/latest/api.html
[11:38] <bobg> How do I pass in negative lat values?
[11:39] <bobg> if i run:
[11:39] <bobg> curl "http://predict.cusf.co.uk/api/v1/?launch_latitude=52.403048&launch_longitude=-1.504749&launch_datetime=2015-09-15T00%3A00%3A00%2B01:00&ascent_rate=5&burst_altitude=30000&descent_rate=10"
[11:39] <mattbrejza> https://www.flickr.com/photos/104821768@N06/albums/72157651518026711/page2 another canon camera
[11:39] <bobg> it says invalid long
[11:40] <fsphil> A560 camera, sorry. got the model wrong
[11:40] <bobg> tried escaping it with \ but that doesn't work either
[11:40] <fsphil> A380 is a slightly bigger thing :)
[11:40] <UpuWork> ping adamgreig
[11:40] <UpuWork> adamgreig will probably know bobg or lz1dev
[11:41] <infaddict> thx fsphil and mattbrejza. great pics. small curvature visible. answers my question ;-)
[11:41] <UpuWork> oh
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[11:41] <mattbrejza> that camera was like £20 from ebay with a jammed lens (ixus 110)
[11:41] <UpuWork> try 358.49526
[11:41] chris_99 (~chris_99@unaffiliated/chris-99/x-3062929) joined #highaltitude.
[11:41] <fsphil> mattbrejza: https://www.flickr.com/photos/104821768@N06/17029372645/in/album-72157651518026711/
[11:41] <UpuWork> http://predict.cusf.co.uk/api/v1/?launch_latitude=52.403048&launch_longitude=358.49526&launch_datetime=2015-09-15T00%3A00%3A00%2B01:00&ascent_rate=5&burst_altitude=30000&descent_rate=10
[11:41] <fsphil> what's going on there?
[11:42] <mattbrejza> thankfully royalmail's handling of packages managed to unjam it
[11:42] <mattbrejza> fsphil: the balloon burst
[11:42] <fsphil> ah weird. never seen a cloud like that
[11:43] <bobg> Great! That works. Thanks. What is the conversion?
[11:43] <UpuWork> 360+ whatever you want :)
[11:43] <UpuWork> 360 -1.504749
[11:44] <bobg> Awesome. thanks very much.
[11:44] <UpuWork> Damn I just answered an API query
[11:44] <fsphil> on fire
[11:44] <UpuWork> my work here is done I must return to my planet now
[11:44] <UpuWork> good bye
[11:44] <fliker09> ah... thanks to Dave the real reason for GPS problem was found
[11:44] <bobg> Cheers
[11:44] <fliker09> it was VPN
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[11:45] <mattbrejza> fsphil: i think the buff of talc is quite common in burst pics
[11:46] <mattbrejza> that was actually from the 808 cam not the canon
[11:46] <fsphil> it's not usually so small and fluffy
[11:46] <mattbrejza> well it was a small balloon :P
[11:46] <fsphil> ah well that might be different :)
[11:46] <fsphil> it looks more like a pyro fired
[11:56] <daveake> For those who care :p, fliker09's Pi had a VPN installed. This broke the code that used getifaddrs to get the Pi's IP address which, by default, PITS sends over the radio at startup. The errant code was taken from the man page for getifaddrs :/
[11:57] <daveake> So with the LAN connected and the VPN showing up in the list of LAN connections, the tracker program bombed at startup. So no GPS or RTTY or anthing else.
[11:59] <UpuWork> oh so something fixable
[11:59] <UpuWork> why would it be on a VPN ?
[11:59] <UpuWork> never mind
[12:00] <daveake> The getifaddrs code calls a function that, in the case of a VPN, returns NULL. It doesn't check for that so it bombs when it tries to use that as a ptr
[12:00] <daveake> Easily fixed
[12:01] <daveake> Annoying that the man page *still* has that error now
[12:01] <SpacenearUS> New vehicle on the map: 03Vk3tbc_chase - 12http://tracker.habhub.org/#!qm=All&q=Vk3tbc_chase
[12:01] <eroomde> i once had a bug that killed the boot process if the computer wasn't poitning south
[12:01] <daveake> hah :)
[12:02] <eroomde> my coding at its finest
[12:04] <fliker09> :D
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[12:10] <Vaizki> vpn on a tracker pi.. how far have we gone from 8bit micros in a year? ;)
[12:10] <daveake> It's the latest thing :)
[12:11] <Vaizki> so maybe the tracker code could replace init and in turn spawn systemd ;)
[12:12] <cm13g09> mattbrejza: ping
[12:12] <Vaizki> at least the tracker would always boot...
[12:12] <mattbrejza> yo
[12:12] <cm13g09> hey mattbrejza - Our MD at work is talking about buying a Paramotor.... (help us all!)
[12:12] <mattbrejza> a what?
[12:12] <cm13g09> He's confused about airspace regulations for flying the thing.....
[12:13] <Vaizki> motorized paraglider?
[12:13] <cm13g09> Vaizki: yes....
[12:13] <Vaizki> tell him you know nothing of the subject
[12:14] <mattbrejza> :/
[12:14] <cm13g09> mattbrejza: Quite....
[12:14] <cm13g09> mattbrejza: I figured that being Soton based you're probably more familiar with the airspace requirements than I am
[12:15] <cm13g09> and, although I know it's different for balloons
[12:15] <mattbrejza> well only when it comes to balloons
[12:15] <Vaizki> having been a MD myself for some 15+ years it never ceases to amaze me why employees are tasked or take upon themselves to worry about MD whims and hobbie
[12:15] <Vaizki> don't you guys have real work to do :D
[12:15] <cm13g09> perhaps you might be able to decipher things
[12:15] <cm13g09> Vaizki: it's after noon on a Friday#
[12:15] <cm13g09> AKA: 10% time (if you work at Google)
[12:15] <Vaizki> oh ok so you're in a pub having pints?
[12:16] <cm13g09> Vaizki: no
[12:16] <cm13g09> we just get to work on "projects"
[12:17] <cm13g09> mattbrejza: How bad is it trying to launch balloons around Soton - I seem to remember it's pretty painful because of Bournemouth and Soton airports
[12:17] <mattbrejza> yea jsut dont launch inside of their CTA, same as anywhere else
[12:18] <cm13g09> admittedly, you're not going to be going sky-high with a paramotor, but our MD seems to think that the New Forest is valid for flying his paramotor....
[12:18] <cm13g09> I'm not *entirely* sure ;)
[12:19] <mattbrejza> just get him to phone up the CAA
[12:19] <cm13g09> fair enough
[12:24] <SpacenearUS> New vehicle on the map: 03test_chase - 12http://tracker.habhub.org/#!qm=All&q=test_chase
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[12:33] Nick change: fl_0 -> fl_0|afk
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[12:45] <charlie> hi
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[13:25] <Laurenceb> https://www.youtube.com/watch?feature=player_embedded&v=tQ1185dRuPU
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[13:39] <michal_f> hi
[13:39] <eroomde> greetings
[13:40] <nickjohnson> We have our very own IRC televangelist, folks! https://gist.github.com/Arachnid/94a70a67d4c9a56eb4a7
[13:40] <michal_f> I'm using android HAB tracker and can't decode anything. It updated itself lately, could be a problem ?
[13:41] <michal_f> signal seems to be OK, I decoded connecting radio to PC
[13:42] <michal_f> I've got an idea, I will record audio from phone and send it to PC and decode there
[13:43] <michal_f> I was able to decode with previous version
[13:49] <M0XIN> And so it continues... https://usercontent.irccloud-cdn.com/file/A6nvpR2e/llama.jpg
[13:50] <M0XIN> hits /ignore
[13:52] <nickjohnson> I forgot to ask my favorite question, damn
[13:52] <eroomde> oh sorry
[13:52] #highaltitude: mode change '+o eroomde' by ChanServ!ChanServ@services.
[13:52] <nickjohnson> TIL eroomde is an op
[13:53] Action: M0XIN takes a step backwards
[13:53] <M0XIN> Stand back everyone. eroomde is on official business.
[13:54] <eroomde> also phone
[13:54] <eroomde> 2 mins sorry
[13:54] <M0XIN> Stand down, stand down
[13:54] <eroomde> nickjohnson: if you stand in one place long enough it grows on you
[13:54] <nickjohnson> eroomde: Yeah, I can vouch for that
[13:55] <eroomde> whois Llama4146
[13:55] <eroomde> oh great
[13:55] <nickjohnson> You're really doing a great job of showing off your godly (heh) powers here ;)
[13:56] <M0XIN> Performance anxiety
[13:56] #highaltitude: mode change '+b *!Alex@81.171.52.9' by eroomde!~edmoore@kraken.habhub.org
[13:57] #highaltitude: mode change '-o eroomde' by ChanServ!ChanServ@services.
[13:57] #highaltitude: mode change '+o eroomde' by ChanServ!ChanServ@services.
[13:57] Llama4146 kicked from #highaltitude by eroomde: Llama4146
[13:57] <charlie> :|
[13:57] #highaltitude: mode change '-o eroomde' by ChanServ!ChanServ@services.
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[13:59] <M0XIN> I'm sure now he's all, "May all your flights be cursed!"
[13:59] T-MaN (~thomas@217.21.233.78) left irc: Quit: Lämnar
[13:59] <eroomde> well let's just hope he doesn't actually have cursing powers
[14:00] <M0XIN> Especially as they're plenty cursed enough
[14:02] <eroomde> the nice thing about this channel nickjohnson is that one so rarely has to do any opping that i'm not that quick at it when it has to be done
[14:03] <eroomde> just got an email from the boss who is off sick saying he's just watched the ukhas talks, and we should fly a balloon at work (having found some excuse)
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[14:03] <nickjohnson> eroomde: I have the same issue
[14:04] <eroomde> your boss is sick?
[14:06] <nickjohnson> Heh, no
[14:07] <charlie> Sounds good ed, I'm convincing people at uni to make a high altitude society of our own lol :P
[14:07] <UpuWork> what did Llama do ?
[14:08] <UpuWork> oh
[14:08] <Laurenceb> Llama is a well known troll
[14:08] <Laurenceb> they hang in tons of channels
[14:08] <michal_f> so I recorded audio signal my phone receives from radio and imported it into dl-fldigi
[14:08] <michal_f> it looks wrong, the shift is around 180 instewad of expected 930
[14:09] <nickjohnson> Laurenceb: They?
[14:09] <nickjohnson> And, troll? Not evangelical?
[14:09] <michal_f> any clues ? faulty cable, bad radio tuning
[14:10] <nickjohnson> Oh, they as a gender-independent adverb, I assume
[14:12] <Laurenceb> its all trolling
[14:13] <charlie> Hey, could I take a moment of all your time to talk to you about our Lord and saviour
[14:13] <charlie> EM drives? Kappa
[14:16] <SpacenearUS> New vehicle on the map: 03SoMakeIt_Chase1_chase - 12http://tracker.habhub.org/#!qm=All&q=SoMakeIt_Chase1_chase
[14:16] <M0XIN> michal_f: Click on Rv in dl-fldigi
[14:17] PeteA_ (4d59998a@gateway/web/freenode/ip.77.89.153.138) joined #highaltitude.
[14:18] <michal_f> it doesn't help
[14:18] ER1OR (51b44bfa@gateway/web/freenode/ip.81.180.75.250) joined #highaltitude.
[14:18] <michal_f> why the shift is different in the first place ?
[14:19] <daveake> dl-fldigi only likes certain wav files
[14:19] <michal_f> HAB Tracker screen looks OK, waterfall looks reasonable, I have "Teacking Signal" status...
[14:19] <daveake> mon, 8kHz sample or something
[14:19] <daveake> mono
[14:19] <eroomde> charlie: sorry phone again
[14:19] <daveake> Someone else (ping *) will know
[14:19] <michal_f> I'll resample to 8kHz then
[14:19] <eroomde> so you're looking to start a uni society?
[14:19] <charlie> yep ed
[14:20] <eroomde> excellent
[14:20] <charlie> I believe someone on my course is doing a balloon related project anyway
[14:20] <eroomde> where are you? you never know if there's another person from there also on ehre
[14:20] <michal_f> no difference
[14:20] <charlie> Well Laurence is already at my uni (Nottingham)
[14:21] <michal_f> I'll wait for mattbrejza - he might have a clue :)
[14:21] <charlie> I have suggested this guy visits here
[14:22] <eroomde> ha you lucky thing
[14:22] <charlie> lol :D
[14:22] <eroomde> nottingham is probably a good location
[14:22] <eroomde> winds permitting
[14:23] <charlie> yeah
[14:23] <eroomde> well that above reasoning is basically circular
[14:23] <eroomde> but i mean you shouldn't be too encumbered with air traffic restrictions
[14:23] <charlie> I think the Physics society did a launch once
[14:23] <SpacenearUS> New vehicle on the map: 03SoMakeIt1_chase - 12http://tracker.habhub.org/#!qm=All&q=SoMakeIt1_chase
[14:23] <charlie> I'm not too sure, the uni campus is right underneath the landing approach for East Midlands
[14:24] <daveake> yeah EMA might be an issue
[14:24] <daveake> I launched from Leicester and had a restriction to not go towards EMA
[14:26] <charlie> Makes sense
[14:26] <charlie> though from what I can see from the Physoc launch, it was pretty risky
[14:26] <eroomde> most stuff will probs drift north or east out of notts
[14:26] <charlie> From memory it floated towards EMA and even towards some cranes I thought that was a bit naff hey ho
[14:27] <charlie> but yeah, agreed ed
[14:34] <mattbrejza> michal_f: i havnt chagned the rtty decoder in the new version. The decoder might have just locked onto the wrong signal?
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[14:54] <HB9RSU> OMG!!!
[14:55] <HB9RSU> We are screening all the footage of our flight 2 weeks ago... look what we discovered!
[14:56] <adamgreig> is it a bird?
[14:56] <adamgreig> is it a plane?
[14:56] <HB9RSU> http://www.spl.ch/temp/EOS1/close_shave.mpg
[14:56] <michal_f> mattbrejza: I've no idea :)
[14:56] <adamgreig> not a great filename
[14:57] <adamgreig> lol christ HB9RSU
[14:57] <mattbrejza> it has little green lines where it thinks the signal is?
[14:57] <michal_f> It looks it decodes some characters ok, but no more than 3 of them
[14:57] <michal_f> yeah, signal lines seem to be in right place
[14:57] <HB9RSU> we better don't publish that :-)
[14:58] <eroomde> wow
[14:58] <eroomde> that's the closest i've ever seen
[14:58] <michal_f> could it be I soldered the audio wire wrong way? I mean swapped ground <> micro lines ?
[14:58] <eroomde> by a long way
[14:58] <mattbrejza> hmm yea, gnd isnt the pin you think it is on those 4 pole things
[14:59] <UpuWork> just installing VLC
[14:59] <UpuWork> because windows is crap
[14:59] <michal_f> however I used the same cable some time ago and it worked. since that 2 things changed: 1.HAB Tracker version 2. my radio was repaired (audio)
[14:59] <mattbrejza> got a screenshot?
[15:00] <mattbrejza> also try via the microphone rather than the cable
[15:00] <michal_f> I don't know how to make phone screenshot :)
[15:00] <UpuWork> wow
[15:00] <michal_f> I might try swapping GND/Mucro lines
[15:00] <HB9RSU> try to reconstruct what plane that was
[15:01] <HB9RSU> should be possible with possition and time
[15:01] <michal_f> HB9RSU: oh lord, that was close :)
[15:01] <UpuWork> I'll add it to my collection
[15:01] <HB9RSU> you could almost read the imatriculation
[15:01] <UpuWork> https://dl.dropboxusercontent.com/u/63720513/Images/Planes/5a1706180e74753d.png
[15:01] <UpuWork> https://dl.dropboxusercontent.com/u/63720513/Images/Planes/iG9flXwN4oY0E.JPG
[15:01] <UpuWork> https://dl.dropboxusercontent.com/u/63720513/Images/Planes/vlcsnap-2012-07-16-20h10m50s44.png
[15:01] <daveake> I thought you might post those :)
[15:02] <UpuWork> but you win
[15:03] <HB9RSU> I still can't believe it
[15:06] <michal_f> mattbrejza: decoding with microphone doesn't work either
[15:07] <michal_f> is there any way to install previous version - just to check ?
[15:09] <mattbrejza> the new one has a few more settings for the decoder (such as AFSK/SSB)
[15:09] <mattbrejza> some of those might be wrong
[15:09] <mattbrejza> (i should probably remove those...)
[15:10] <HB9RSU> The balloon remains rel. calm after the flyby. Keep in mind the GoPro has a very wide angle view. That was very close
[15:10] <HB9RSU> sorry for my enthusiasm ;-)
[15:11] <mattbrejza> michal_f: http://users.ecs.soton.ac.uk/mfb2g09/decoder/ has an old version. also there is a .jar that runs on the pc
[15:11] <michal_f> thx!
[15:13] <michal_f> screensot: https://drive.google.com/file/d/0B_8ipK0TpiuhaGI5ajJTbUQ0eXc/view?usp=sharing
[15:14] <mattbrejza> all looks good, but that signal is pretty weak
[15:15] <michal_f> I can turn it up untill clipping
[15:16] <mattbrejza> well there is a lot of background noise, even if the radio is low the signal should be much strogner than the noise
[15:16] <mattbrejza> https://lh6.ggpht.com/WAglTGKO65mVknpYS0RNZeqQp7hOxyTqnOX6k23yasOm673qLs4avpeMVvyWGnqRlrG0=h900-rw see how much stronger the rtty is
[15:18] <michal_f> ok, that's smth to look into
[15:19] <mattbrejza> does the signal sound strong if you listen to it?
[15:19] <mattbrejza> you said fldigi is fine, perhaps its the cable?
[15:20] <michal_f> yes, it sounds OK
[15:20] <michal_f> I'll check cable
[15:20] <mattbrejza> what does it sound like if you press 'echo'?
[15:20] <michal_f> I used different cable to connect to PC directly and decoded OK
[15:21] <michal_f> when pressing 'echo' my phone sends audio to phones (which are not connected obviously :) )
[15:21] <michal_f> earphones^
[15:22] <mattbrejza> oh right. it should do it out of the phones speakers though... :/
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[15:24] <michal_f> this is what my phone recorded: https://drive.google.com/file/d/0B_8ipK0Tpiuhd2RmU3QyV3hGUjA/view?usp=sharing
[15:24] <michal_f> (after discarding one of stereo channels)
[15:24] <michal_f> dl-fldiogi shows about 180Hz shift, while my tracker is 925Hz
[15:25] <SpacenearUS> New vehicle on the map: 03SP3VSS - 12http://tracker.habhub.org/#!qm=All&q=SP3VSS
[15:26] <mattbrejza> it doesnt sound too bad, perhaps a bit noiser than expected
[15:26] <mattbrejza> (than you would expect seeing as the payload is next to you)
[15:27] <mattbrejza> although im unsure whether the recording is the same as what the app is getting
[15:27] <mattbrejza> the snr in the recording seems better than the screenshot
[15:29] <michal_f> I might have toned it down a few decibels in audacity
[15:29] <mattbrejza> i would try that recording on my phone but i dont have the cable with me im afraid
[15:30] <michal_f> I will try previous veresion
[15:31] <chimpusmax_win> Need some advice... Is 300g for a camera mad? First time i start to upt eveything in my payload and it seems mighty heavey. It is about 800g i suspect but it feels so much.
[15:32] <mattbrejza> depends if that camera is super nice
[15:32] <michal_f> and another question is - why dl-fldigi can't decode this .wav ?
[15:32] <mattbrejza> it assumes the wav is a certain sample rate probably
[15:33] <mattbrejza> get a cable and loop line in to line out for a quick test
[15:33] <chimpusmax_win> camera is pretty nice.. on paper stuff seemed fine but the weight by feel just seems so much.
[15:33] <michal_f> aha... daveake suggested 8kHz
[15:34] <chimpusmax_win> Its a sony RX100 mkIII. Not worried by so much by potential loss more that its a lot to come down.
[15:34] <adamgreig> an rx100 mk3 seems a _lot_ to send up on a hab
[15:34] <adamgreig> 300g isn't a huge deal
[15:34] <adamgreig> but that's a nice camera!
[15:34] <adamgreig> get some good pics I guess
[15:34] <adamgreig> how do you get it to take photos on the regular?
[15:35] <chimpusmax_win> hope is a lot of burst shots to then stitch.
[15:35] <adamgreig> yea but how do you trigger it to just keep taking continuous bursts?
[15:36] <chimpusmax_win> mkiii has a special usb fitment to allow a shutter and focus to be controlled by connecting two pins. Have it working on arduino and also if wanted on a pits.
[15:36] <adamgreig> I'm just curious as the rx100 mkiii is my handheld camera atm and it seems too nice to lose to a hab :p
[15:36] <chimpusmax_win> using optocouplers
[15:36] <adamgreig> oh cool
[15:36] <adamgreig> that's nice
[15:37] <chimpusmax_win> I do beleive someone has a sort of theme option you can load to give timelapse. oly saw someting recent on that.
[15:37] <chimpusmax_win> i'm just put off by the bulk.. Was also thinking splitting payload as much into seperate ones as to spread weight. Eg so not a solid 1kg lump
[15:38] <chimpusmax_win> Also have a dummy battery in it so can run longer.
[15:39] <adamgreig> nice
[15:39] <adamgreig> <=1kg in a foam box should be fine
[15:39] <adamgreig> it's on the heavy side as things go
[15:40] <chimpusmax_win> will be under 1kg all in with parachute etc.
[15:41] <chimpusmax_win> Dropping out video option with gopro could give me fair bit less weight... just feel uneasy with weight.
[15:48] <Geoff-G8DHE> michal_f, Did you decode that file payload6.wav file you put up ? Its decoding here OK
[15:50] <michal_f> no, I could not decode it :/
[15:50] <Geoff-G8DHE> Its a shift 0f 940Hz see here http://360.g8dhe.net/HAB_Flights/payload6.wav.JPG
[15:51] <Geoff-G8DHE> 8N2 as you can see, no problem decoding it at all
[15:51] <michal_f> hmmm... whats wrong at my side then ?
[15:51] <Geoff-G8DHE> Show us screen grab of dl-fldigi as starters
[15:53] <Geoff-G8DHE> or whatever you were using to decode
[15:54] <michal_f> maybe I'm playing that wave the wrong way - it looks too narrow on waterfall
[15:55] <michal_f> file > audio > playback - is this the option to load a .wav with signal ?
[15:55] <Geoff-G8DHE> I just played it in the browser and selected the audio channel
[15:57] <michal_f> OK i decoded it by piping through virtual audfio cable
[15:57] <michal_f> so PC decoding is OK.
[15:57] <Geoff-G8DHE> Right playing it back in dl-fldigi its B****
[15:57] <Geoff-G8DHE> probably wrong sampling rate ?
[15:58] <michal_f> probably - I resampled it to 8kHz as daveake suggested
[15:58] <Geoff-G8DHE> most likely its 44KHz or something ?
[15:58] <daveake> I only guessed; I also prompted for someone who actually knows to correct me :)
[15:58] <michal_f> that would mean that audio signal getting to my phone is OK, but HAB Tracker won;t decode it.
[15:59] <michal_f> daveake: thx anyway, it could have worked
[15:59] <Geoff-G8DHE> it expects it to be the sampling rate of the soundcard I suspect
[15:59] <michal_f> I will try to install HabTracker previous version
[16:00] <michal_f> (I also tried swapping GND/Micro lines in cable - no difference)
[16:01] <SpacenearUS> New vehicle on the map: 03KK6PNN-1 - 12http://tracker.habhub.org/#!qm=All&q=KK6PNN-1
[16:01] <Geoff-G8DHE> Yup default samplke rate is 44.1KHz
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[16:03] <gianfx> Hi
[16:08] <Geoff-G8DHE> michal_f,Mumm just changed it to 8KHz in Audacity and it plays back fine, whilst the 44.1KHz version doesn't, I wonder if the header was written wrong on the file or something weird ?
[16:10] <Geoff-G8DHE> gianfx, Hi
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[16:12] <michal_f> Geoff-G8DHE: perhaps I screwed smth, but since it decodes on PC (throuygh virtual cable) I can assume the signal comming to my phone is OK
[16:12] <SpacenearUS> New position from 03RPF-N2 after 0318 hours silence - 12http://tracker.habhub.org/#!qm=All&q=RPF-N2
[16:12] <michal_f> so I', fiddling eith HAB Tracker now
[16:12] <SpacenearUS> New vehicle on the map: 03RPF-N1 - 12http://tracker.habhub.org/#!qm=All&q=RPF-N1
[16:12] <Geoff-G8DHE> Probably, playing it back with VLC it wa fine, only problem wa dl-fldigi till I resampled it
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[16:20] <fsphil> lens corrected version of that grand canyon image: http://i.imgur.com/YLOXWmK.jpg
[16:21] <chimpusmax_win> fantastic
[16:22] <charlie> looks almost scifi
[16:22] <charlie> like a terraformed Mars ;)
[16:23] <Geoff-G8DHE> mm Red Mars maybe ?
[16:27] <daveake> That's gorgeous
[16:27] <michal_f> ok guys, I installed previous version and decoded straight away
[16:27] <michal_f> nice canyon btw
[16:29] <michal_f> still, SNR is far from what matt showed me
[16:37] <SpacenearUS> New vehicle on the map: 03DO6SOM-11 - 12http://tracker.habhub.org/#!qm=All&q=DO6SOM-11
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[16:51] <chimpusmaximus> Not sure if this link will work but a close one with aircraft https://video-lhr3-1.xx.fbcdn.net/hvideo-xpf1/v/t42.1790-2/12014373_1161913330489688_695213825_n.mp4?efg=eyJybHIiOjU0NSwicmxhIjo1MTJ9&rl=545&vabr=303&oh=d9df0337316fbe9cb531f67fad5c6103&oe=55F330CF
[16:53] <michal_f> link is ok
[16:53] <charlie> now just make sure news agencies dont see that :P
[16:54] <HB9RSU> full resolution of our original (It's MPG, so maybe win media player will not work): http://www.spl.ch/temp/EOS1/close_shave.mpg
[16:54] <HB9RSU> better don't spread that in the public
[16:55] <charlie> win player works here
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[16:56] <HB9RSU> chimpusmaximus: You got that from here? or is it already out in the wild?
[16:57] <chimpusmaximus> Facebook page "space tech for everyboady"
[16:57] <HB9RSU> Oh no, Adrian published it on facebook ...
[16:57] <HB9RSU> yep, just realized
[16:58] <charlie> whos Adrian
[16:59] <HB9RSU> One of my team. We did that flight 2 weeks ago
[16:59] <charlie> cue overreaction from general public in 3... 2... 1... ;)
[16:59] <HB9RSU> :-(
[17:01] <HB9RSU> Internet never forgets ...
[17:02] <colin1> Hi, I get a Fldigi frequency shift when an altitude cutoff script activates. Cutoff relevant script lines 43-44 and 147-168 (http://pastebin.com/TCmdGRUu). The shift can be seen on a capture (http://imgur.com/4QZg9QW)
[17:05] <colin1> Any advice on the cause? The cutoff is intended to activate a switch at a predetermined altitude - and messing with the ferquency at this stage in the flight might cause problems (don't know).
[17:06] <fsphil> cut-down?
[17:07] <colin1> No, I want to sample air using some form of aspirator (still to be designed).
[17:07] <fsphil> a drop in voltage of the system can caused that
[17:07] <fsphil> are you switching on something that draws a lot of current?
[17:08] <eroomde> HB9RSU: that was probably a bad move by adrian
[17:09] <colin1> I thought that might be a problem. The aspirating fan uses a separate circuit actuated by an ECXELL CELL - when I removed the hardware (and the LEDs, I still got the shift).
[17:10] <fsphil> you get the shift with nothing at all connected to the gpio pin you're switching?
[17:11] <fsphil> pins*
[17:15] <colin1> Excuse my ignorance, what is the gpio pin? I am using pins 2 and 4 for the cutoff. these are linked to LED pins that indicate a signal, and these in turn are linked to the reedswitch input. removing the reed switch hardware and the indicator LEDs still gives the frequency change.
[17:16] <fsphil> are you able to remove the LED?
[17:19] <eroomde> gpio = general purpose inputoutput
[17:19] <HB9RSU> facebook deleted :-)
[17:20] <eroomde> in this context it just means 'pin'
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[17:30] <arjunnaha> Noob question but what kind of cable do I need to connect the diamond A430S10R to an airspy (sma)
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[17:32] <fsphil> the plug you need for that is called a PL259
[17:32] <fsphil> if you have some coax they're not too bad to solder
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[17:34] <arjunnaha> Bust out my soldering skills
[17:35] <arjunnaha> This? http://www.amazon.co.uk/gp/product/B00CZA808W?keywords=PL259&qid=1441992777&ref_=sr_1_2&sr=8-2
[17:35] <eroomde> don't use those unless you have to
[17:35] <Lunar_Lander> evening
[17:35] <arjunnaha> So what do I use?
[17:35] <eroomde> oh sorry
[17:35] <arjunnaha> Evening
[17:35] <eroomde> did't read scrollback
[17:36] <eroomde> yeah so they're a horrible but common connector
[17:36] <arjunnaha> Haha, I though it would be a coaxial or something simble
[17:36] <arjunnaha> Lovely
[17:36] <colin1> fsphil, I removed the leds (and not connected to the reed switch, etc) and there was no significant frequency shift when the cutoff change was recorded on the fldigi output.
[17:36] <eroomde> people sometimes buy a pl259-N converter
[17:36] <arjunnaha> I'll get DT to do it for me
[17:36] <eroomde> then you'd use an N-sma cable to airspy
[17:37] <eroomde> colin1: how is your board being powered?
[17:37] <arjunnaha> Anything with a patch cable already done?
[17:38] <arjunnaha> Found one
[17:38] <eroomde> i would buy:
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[17:38] <eroomde> PL259-N adaptor
[17:39] <eroomde> a cable with an N at each end
[17:39] <colin1> the board is powered from my laptop USB - but the aspirator fan is powered from a different circuit
[17:39] <eroomde> then an N-sma adaptor for the other end
[17:39] <eroomde> N-N cables are useful to have around, as are the adaptors
[17:39] <eroomde> colin1: could you take a photo of your setup?
[17:39] <daveake> colin1 (silly question) you do have resistors to limit the current into the LEDs, don't you ?
[17:39] <eroomde> that an LED could pull enough cureent to dip a supply rail is odd
[17:40] <eroomde> daveake has leapt straight to where i was heading :)
[17:40] <Upu> arjunnaha http://www.barenco.co.uk/ for your connectors
[17:41] <colin1> No led resistors!! Is this something I should have done?
[17:42] <daveake> Guess
[17:42] <eroomde> oh christ colin
[17:42] <daveake> When your retinas have recovered from looking at the LEDs, find or buy some resistors
[17:42] <eroomde> don't launch anything yet
[17:43] <eroomde> you've some basic electronics to read up on before putting your stuff into controlled airspace
[17:43] <daveake> Is this Arduino (if so which one?) or Pi or what?
[17:43] <colin1> I could dispense with the leds and feed the signal directly into the reed-switch circuit (not tried yet).
[17:43] <daveake> not necessarily
[17:43] <colin1> I am usinf small 5v leds
[17:43] <daveake> ah in that case they have LEDs built in. If that's what you actually have.
[17:44] <daveake> er
[17:44] <daveake> resistors built in
[17:44] <daveake> also LEDs :)
[17:44] <daveake> lonng day/week :)
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[17:44] <arjunnaha> Thanks Upu
[17:44] <colin1> its an arduino UNO
[17:45] <Upu> real one or fake ?
[17:45] <colin1> Real (I think) - got from Maplin.
[17:45] <Upu> ok
[17:46] <colin1> I used 5v leds to avoid messing with resistors - maybe I should revert to the 3v versions.
[17:47] <eroomde> how much current do they take?
[17:47] <arjunnaha> Is there another name for UHF connectors?
[17:48] <mattbrejza> shielded banana plug
[17:48] <mattbrejza> pl259
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[17:48] <eroomde> arjunnaha: pl259
[17:48] <eroomde> the female half is called so-238
[17:49] <daveake> colin1 You need to make sure that the LEDs *plus* whatever else you're driving draw less, at 5V, that each Arduino pin can safely supply (which is probably 20mA or so, but look it up don't just trust me)
[17:49] <colin1> Nor sure - need to look into this (please excuse me, I have no real competency in programming or electronics - very much a learner, battling on!)
[17:50] <daveake> Yes you do definitely
[17:50] <daveake> It's a fun path so enjoy it just don't rush it
[17:51] <colin1> Thank you everyone. I will try out a few things. Colin.
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[18:00] <Lunar_Lander> https://drive.google.com/file/d/0B1lke6hPHKJDaF9ieGIxci1GMkE/view?usp=sharing circuit work
[18:01] <eroomde> what's with the teeth?
[18:02] <Lunar_Lander> good question, they have been there since I started in 2011
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[18:02] <Lunar_Lander> might be from the son of my vice chief who used to be in that office
[18:02] <Lunar_Lander> other than my professor and him there are no parents with us
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[18:47] <Upu> Probably posted before but https://www.youtube.com/watch?t=63&v=d1tC2KmlEhk
[18:56] <fsphil> lol
[18:58] <daveake> he just wanted to get high
[18:59] <Lunar_Lander> :D
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[19:04] <arjunnaha> Would this work? http://www.gigatronix.co.uk/default.php?_minc=cabulator_pf_datasheet&__utmt=1&__utma=173680181.210037382.1441994161.1441994161.1441997950.2&__utmb=173680181.3.10.1441997950&__utmc=173680181&__utmz=173680181.1441997950.2.2.utmcsr=google|utmccn=(organic)|utmcmd=organic|utmctr=(not%20provided)&_lang=&rel_dir=&partnostr=BP6AJJ1AB19L-20M&cable_id=7224&left_conn_id=399&right_conn_id=3425&left_sleeve_id=3268&right_s
[19:05] <Upu> 404 for me
[19:09] <Geoff-G8DHE> you need an SMA Plug, that one is a socket
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[19:35] <ntx2> Hi - have you used randomsolutions.com for your parachute and balloon orders?
[19:36] <eroomde> yes everyone has
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[19:37] <ntx2> I ordered a parachute and balloon from them and have not received any confirmation email and my email to sales@randomsolutions.co.uk bounced
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[19:37] <eroomde> http://randomsolutions.co.uk/Random_Aerospace/Contact.html
[19:37] <eroomde> play a game of spot the difference
[19:38] <Geoff-G8DHE> sales@randomaerospace.com
[19:39] <ntx2> I see it now :)
[19:39] <eroomde> steve is very good, you won't be dissapointed
[19:40] <Geoff-G8DHE> He is on IRC as rocketman
[19:40] <ntx2> Their domain and contact addresses have different domains
[19:40] <ntx2> in any case, I was surprised that I did not get any confirmation email
[19:42] <ntx2> thanks! I have now sent the email to the correct address :)
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[19:43] <Geoff-G8DHE> It might be holiday time of course, no idea, just a possibility!
[19:44] <eroomde> no carrier
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[21:09] <amell> anyone know ideal length of wire for antenna on 434mhz RFM98?
[21:09] <amell> 17something cm? i cant remember
[21:10] <Lunar_Lander> yes
[21:10] <amell> 17.2?
[21:13] <amell> http://i.imgur.com/KoXpD8G.png my tracker
[21:14] <Lunar_Lander> yea 17.25
[21:14] <Lunar_Lander> cool!
[21:14] <mfa298> 16.4cm from memory
[21:14] <amell> not bodnaresque, but itll do
[21:14] <amell> 16.4 or 17.25?
[21:14] <mfa298> 0.95 * ((300/434) /4)
[21:15] <mfa298> 0.95 is an approximate value for the velocity factor for a groundplane type antenna
[21:15] <amell> its just a wire off the ANA pin of the RFM
[21:15] <amell> no groundplane, going in a rocket in the morning
[21:16] <amell> c. 7000 feet.
[21:16] <theRealSIbot> In real units: 7000 ft = 2134 m
[21:16] <mfa298> it's still going to be about that (I think it's true for most basic wire antennas, dipole , groundplane etc)
[21:18] <amell> its a bit too long for the payload bay :( will it work if i curl it back for 5 cm or so?
[21:22] <Geoff-G8DHE> you would be better making it into a spiral to fit the full length in then folding it back on itself, not a tight spiral as wide open as possible
[21:23] <amell> thanks, thats doable
[21:23] <amell> hmm, are there any automated lora receivers around nuneaton way?
[21:24] <amell> wondering if my rockets will report to SNUS :)
[21:24] <Geoff-G8DHE> Not sure, I have a 2xpairs running here, but on the South Coast
[21:24] <amell> 7000 ft max, so probably not in horizon
[21:24] <theRealSIbot> In real units: 7000 ft = 2134 m
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[21:24] <Geoff-G8DHE> what frequency and settings ?
[21:25] <Geoff-G8DHE> Oh, no only just getting above it 4500m is my limit that way
[21:26] <Geoff-G8DHE> still would be interesting to liten
[21:26] <Geoff-G8DHE> listen
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[22:23] <michal_f> this is Yagi I'm trying to do: https://drive.google.com/file/d/0B_8ipK0Tpiuha0prMjduWWt5STg/view?usp=sharing
[22:23] <michal_f> does it look OK-ish to you ?
[22:23] <michal_f> (I've never done a yagi before)
[22:25] <michal_f> I'm worried about the way I connect coax to a radial
[22:26] <michal_f> looks overcomplicated, but it was easier to do
[22:26] <amell> sorry. im not one for antennas :(
[22:27] <amell> my tracker seems to be not working :( i dont understand it.
[22:27] <michal_f> maybe it's too small ;]
[22:27] <amell> if clock rate is changed from 16Mhz to 8Mhz would that have impact on softwareserial baud rate?
[22:29] <amell> i have a feeling it cant communicate with gps cos its going at a lower baud rate than it thinks it is.
[22:29] <amell> its times like these i wish i had a logic analyser
[22:30] <amell> even stranger, i have a battery that works on one tracker but not the other.
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[22:40] <gonzo_nb> could you not just toggle a pin in the soft serial interrupt and see the rate?
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[22:53] <amell> default baud rate on m8q is 9600 right?
[22:59] <amell> yep it was a baud issue :)
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[23:08] <amell> still cant get a lock though&. sentences coming out fine.
[23:10] <michal_f> gps is indoors ?
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[23:12] <amell> its on teh car dashboard outside
[23:12] <amell> should work, tomtom does
[23:13] <amell> 25 min now. no lock
[23:16] <michal_f> afaik some types of glass might block gps
[23:16] <ike> are there any clouds in the sky?
[23:17] <ike> are there any trees or buildings around?
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[23:17] <ike> one some GPSs you can upload predicted orbits
[23:17] <ike> so they get fix in 40 seconds
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[23:24] <mattbrejza> you really have to watch for those clouds with silver linings
[23:24] <amell> 1 hour and no lock
[23:24] <mattbrejza> ironically in this case there is no silver lining if you have those above you
[23:24] <amell> maybe a dud
[23:25] <amell> think its high Kp at the moment, but still...
[23:35] <Ian_> You could always change your windows so that your GPS doesn't get screened . . . Mrs Amell would appreciate that . . . NOT!
[23:36] <amell> ha. but seriously, stlll no lock?
[23:36] <amell> something is wrong for sure
[23:36] <amell> 0 sats
[23:37] <Ian_> Not the time of night to be testing it in the car either.
[23:38] <Ian_> Have you another tracker for your rocket (in the morning?) ?
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[23:44] <gonzo_nb> I've had some long lock times on gps, with no decent explanation
[23:45] <gonzo_nb> tend to get a time lock quite quick, but positional lock das taked 20mins+ even in open field sites
[23:46] <gonzo_nb> not 1hr though!
[23:47] <michal_f> well, my yagi is crap, has great reflected power but totally not for the frequency I need
[23:47] <michal_f> I'd better buy one
[23:48] <amell> ive got two trackers. the other one works fine.
[23:48] <amell> i dont understand whats wrong with it. i see the sentences and no lock
[23:48] <amell> i will try again with it in the morning and if it still doesnt work have to talk to Upu
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[00:00] --- Sat Sep 12 2015