highaltitude.log.20130119

[00:00] <jarod> ok got it working i guess
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[00:01] <fsphil> are you getting coordinates?
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[00:01] <jarod> http://x264.nl/dump/52-2205/403.900mhz-H2743970-2013-01-18-13441m-sdrsharp.jpg
[00:02] <jarod> that good?
[00:04] <fsphil> that looks perfect
[00:04] <fsphil> the gps altitude is agreeing with the pressure altitude
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[00:05] <fsphil> there's a map function in sondemonitor too, you can probably use that now to see where it is
[00:05] <jarod> ok need to press download map 100x before it shows... google map :P
[00:08] <Laurenceb_> yeah sondemonitor is doing its own position calculation
[00:08] <Laurenceb_> hence the residual
[00:08] <jarod> google maps loading always fails in coaa software
[00:08] <jarod> i forgot the trick :/
[00:11] <fsphil> it's never worked for me, but I always assumed it was Wine's fault
[00:11] <fsphil> I run it in linux
[00:11] <jarod> nop, all of a sudden it starts working, but i cant recall how :P
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[00:17] <jarod> ah yes
[00:17] <jarod> bertrik found it
[00:17] <jarod> you need to load a map first
[00:19] <jarod> C:\Program Files\COAA\SondeMonitor\chart files\globe.jpg
[00:19] <jarod> open that
[00:20] <jarod> then google maps are downloaded
[00:20] <fsphil> I must try that
[00:20] <jarod> fsphil got it?
[00:20] <jarod> ok
[00:20] <jarod> file/load map
[00:23] <arko> https://www.youtube.com/watch?feature=player_embedded&v=mdZo_keUoEs
[00:23] <arko> i love this guys videos
[00:23] <jarod> 20km its dropping down
[00:24] <jarod> http://x264.nl/dump/52-2205/403.900mhz-H2743970-2013-01-18-19073m-sdrsharp.jpg
[00:25] <jarod> http://x264.nl/dump/52-2205/403.900mhz-H2743970-2013-01-18-sondemonitor.jpg
[00:26] <fsphil> how is this guy still alive
[00:26] <jarod> i wonder if gps is correct :D
[00:27] <fsphil> it should be
[00:27] <fsphil> is it landing near you? :)
[00:27] <jarod> nop
[00:28] <jarod> its about 50KM away over land...
[00:31] <arko> fsphil: magic
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[00:35] <fsphil> haha
[00:39] <jarod> i think 403.95 a weak ballon somewhere else?
[00:40] <jarod> http://x264.nl/dump/52-2205/403.900mhz-H2743970-2013-01-18-7600m-sdrsharp.jpg
[00:43] <jarod> http://x264.nl/dump/52-2205/403.900mhz-H2743970-2013-01-18-sondemonitor.jpg refresh
[00:47] <jarod> 4km :)
[00:48] <jarod> its gonna land on the freeway :O
[00:50] <jarod> 2.8km :)
[00:50] <bertrik> the signal is practically gone for me now
[00:50] <jarod> still -40db here
[00:51] <jarod> guess last time it was closer to you
[00:51] <jarod> i recorded IQ files on the previous one, ill decode that and give location :D
[00:51] <jarod> after this one landed
[00:52] <jarod> 1900m
[00:55] <jarod> http://x264.nl/dump/52-2205/403.900mhz-H2743970-2013-01-18-1098m-sdrsharp.jpg
[00:56] <jarod> 650m record broken
[00:57] <jarod> 570, lowest and its gone :O
[00:57] <jarod> http://x264.nl/dump/52-2205/403.900mhz-H2743970-2013-01-18-570m-sdrsharp.jpg nice fade out :D
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[01:04] <jarod> bertrik running recording of H2744213 now
[01:07] <jarod> hmm the gps is off
[01:07] <jarod> says near luxemburg
[01:07] <jarod> fsphil how is that possible?
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[02:02] <jarod> police helicopter on your right :D
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[05:55] <jarod> When an airtraffic controller says: Identify, what does he mean?
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[08:17] <Upu> morning
[08:19] <x-f> morning
[08:20] <x-f> how's the situation with snow?
[08:20] <Upu> still there
[08:20] <Upu> waiting for Darkside to let us have some of his temperature
[08:20] <Upu> we can split it down the middile
[08:20] <Upu> he can have 25' we can have 25'
[08:21] <x-f> hehe
[08:21] <x-f> heard in news, that Wales got 20+ cm yesterday
[08:22] <x-f> do you use winter tires in UK?
[08:22] <Upu> some do, generally we don't
[08:22] <Upu> I'd get some if I could afford them but will be a £1000 with a set of wheels
[08:22] <Upu> I know my mate uses them between Oct and Mar in Slovenia
[08:23] <Upu> but its only just got below 8'c in the last month here
[08:23] <x-f> right
[08:24] <Upu> I would love some at the moment as my normal tyres are down to 2mm
[08:24] <Upu> so its not great at all
[08:24] <x-f> yikes
[08:25] <Upu> still legal .. but may have to sort it out sooner rather than later
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[08:48] <Spoz> hello
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[08:52] <Spoz> so didnt get a single packet uploaded at todays launch
[08:52] <Spoz> such terrible internet on the edge of the outback
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[09:51] <fsphil> morrrning
[09:53] <Spoz> morning
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[09:53] <number10> morning
[09:54] <number10> interesting article on tyres (UK) http://www.tyrereviews.co.uk/Article/All-Season-Tyres-How-Do-They-Stack-Up.htm
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[13:16] <griffonbot> Received email: RG-lz1dev "[UKHAS] Re: Mobile Tracking webapp"
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[13:47] <Hix> whoaa, i got my board down to 50x50mm incl SMA and 3 spare digital headers for futurproofedness [is that a word - is now]
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[14:01] <fsphil> english itself is futureproofedness
[14:03] <lz1dev> undoubtlessness
[14:04] Action: fsphil goes back to inquisitivenessing a PCB
[14:04] <Hix> anyone flown an IMU or compass?
[14:05] <fsphil> I guess those iphone/android launches did
[14:05] <fsphil> not sure if anyone did intentionally
[14:05] <Hix> ha yeah.
[14:06] <mclane> plan to do that in spring
[14:06] <Hix> interesting to see different forces at play on various descent stages
[14:07] <Hix> bu ttumbling would probably ruin it
[14:07] <SpeedEvil> not if you have an adequate range gyro
[14:07] <mclane> I am more interested in the compass data to see where the camera is pointing to
[14:08] <Hix> hmm, great for stitches i suppose
[14:08] <SpeedEvil> plus. magnetometer would let you remove overrotation errors
[14:09] <fsphil> would a compass work if the payload was spinning quickly?
[14:10] <SpeedEvil> yes
[14:10] <SpeedEvil> they readout up to several hundred hz
[14:10] <Hix> you'd need som loony logging speed though
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[14:11] <SpeedEvil> however, you would need to do nasty kalman filtering
[14:11] <mclane> the one I am using goes up to 75 Hz
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[14:11] <SpeedEvil> as 'up' may not be trivial to pull out of a randomly spinning payload
[14:11] <SpeedEvil> hence why a high rate gyro is good
[14:11] <mclane> but I will sample with just a few Hz max
[14:12] <SpeedEvil> that won't work well for spinning
[14:12] <Hix> board rev.2 http://i.imgur.com/LoQGQO6.png
[14:12] <mclane> my payloads did not spin that fast
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[14:31] <chris_99> one of these cameras could be really interesting on a balloon http://www.amazon.com/EyeSee-360-Panoramic-Photowarp-Videowarp/dp/B003VHZS9W/ref=pd_sim_sbs_p_1/192-2979576-6498419
[14:32] <chris_99> (looks like you can get them cheaper, but the video is quite interesting)
[14:33] <lz1dev> habitat - chase car fleet management system
[14:34] <lz1dev> entirely my fault :\
[14:34] <Hix> http://www.youtube.com/watch?feature=player_embedded&v=SUGVd2GwtZo - patvan
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[15:07] <lz1dev> lol @ mattt_chase
[15:07] <lz1dev> should probably include a boat icon
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[15:18] <chrisstubbs> Whats the law on using a PMR (0.5w 446mhz) for the transmitter on a HAB?
[15:19] <craag> chrisstubbs: Not permitted airborne under PMR license afaik
[15:20] <craag> Hence why we use the 10mW ISM license, as it is allowed airborne in IR2030.
[15:21] <chrisstubbs> Ahhh :(
[15:21] <mattbrejza> not that it explicity says you cant use pmr airborne anywhere
[15:21] <Lunar_Lander> hello!
[15:21] <Lunar_Lander> xD
[15:21] <cuddykid> seems to be an awful lot of chase cars around
[15:21] <mattbrejza> boo
[15:22] <craag> mattbrejza: Indeed, I was looking, but couldn't find anything.. still not sure constant data would be quite what PMR is for :P
[15:22] <cuddykid> hiya mattbrejza - how's the android app going
[15:22] <Lunar_Lander> spacenear doesn't load
[15:22] <cuddykid> Lunar_Lander: loading here
[15:22] <mattbrejza> alright cuddykid, but im not sure if that chasecar getting wet is new data or not
[15:23] <mattbrejza> guessing not as the time is wrong
[15:23] <cuddykid> ah
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[15:23] <mattbrejza> location reporting is a bit of a mess atm
[15:23] <chrisstubbs> Voice could be classed as data :P Im sure its already been looked into though
[15:23] <craag> mattbrejza: Seems to have rounded the co-ordinates quite roughly
[15:23] <cuddykid> everything is essentially data :P
[15:24] <mattbrejza> yea thats because i manually entered before i used gps
[15:24] <mattbrejza> but it could be the pc test version so who knows
[15:24] <mattbrejza> i can get data from habitat and display it now which is nice
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[15:24] <mattbrejza> hows yours cuddykid ?
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[15:35] <Hix> if i have created the function below, how do I get the lat and long from that function in my datastring? i.e what do i call lat and long?
[15:35] <Hix> //the getgps function will get the values required from the gps
[15:35] <Hix> void getgps(TinyGPS &gps)
[15:35] <Hix> {
[15:35] <Hix> //define variables
[15:35] <Hix> int latitude, longitude;
[15:35] <Hix> //call this function
[15:35] <Hix> gps.f_get_position(&latitude, &longitude);
[15:35] <Hix> }
[15:35] <cuddykid> mattbrejza: not too bad thanks, slowly progressing :)
[15:35] <Hix> stuck again
[15:36] <fsphil> Hix: if I've read that right, you're putting floating point values into an integer
[15:37] <Hix> do i change to get_position?
[15:37] <cuddykid> mattbrejza: spent a lot of time re-ordering stuff to make it easier to add to later, it was becoming a bit of a bodge (as these projects tend to become) lol
[15:38] <fsphil> Hix: change your variables to floats
[15:38] <fsphil> you can use dtostrf to convert floats to strings
[15:39] <fsphil> although it's an interesting exercise to write a float>string function
[15:39] <Hix> I was warned to just use int for lat and long. looking at the keywords I've called f_get_position when i shoudhave called get_position no?
[15:39] <fsphil> either will be fine
[15:40] <Hix> I can do the conversions on the decimal parts later, just want to get something there to start off with
[15:40] <Hix> but not sure what to call in the sprintf
[15:40] <mattbrejza> i know what you mean cuddykid
[15:40] <fsphil> sprintf on arduino can't handle floats directly, not without adding a lot of library baggage
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[15:41] <Hix> so if i use get_position and declare lat and long as ints are they still coming in as floats?
[15:41] <fsphil> get_position expects longs
[15:41] <Hix> ah ok
[15:42] <fsphil> there's a few gotchas using integer values too
[15:43] <fsphil> but you can worry about that later :)
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[15:43] <Hix> so i declare lat long as longs in my variable, then what do I call in the loop to return their values from the function?
[15:44] <fsphil> I wouldn't bother having that code in it's own function
[15:44] <fsphil> -'
[15:45] <Hix> oops, meant function
[15:47] <fsphil> sometimes I think C should have a way of returning multiple values
[15:47] <fsphil> without having to passing in pointers or use structs
[15:48] <fsphil> but it just wouldn't make sense in that kind of language
[15:50] <Lunar_Lander> Hix, can I give you a general tip?
[15:50] <Hix> yup - as many as you want
[15:51] <Lunar_Lander> if you want to show code, it is a good idea to paste it to http://paste.ubuntu.com/ as that like makes it easier to look at it as compared to the channel directly
[15:51] <Hix> sure, i normally se pastebin but it was a lot of work for a tiny function
[15:52] <Lunar_Lander> ah
[15:53] <Lunar_Lander> but I can't help with tinyGPS, sorry
[15:53] <Hix> not reallt TinyGPS, just how to call a value from a funtion
[16:00] <G0MJW> Just ordered an AD1115 from Adafruit
[16:00] <eroomde> so i'm at a nice hotelso i have to share, cos it's not showing off because this is due to wierd circumstances
[16:00] <eroomde> but i'm at the corinthia hotel in london
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[16:00] <eroomde> and i've never seen anything like this except on tv
[16:01] <eroomde> i drove up, and a man in a top hat said 'hello mr moore!' and took the car keys and drove my car off, meanwhile another man in a top hat led me into the foyer, and another person appered with a glass of champagne and started asking me how my trip was
[16:01] <eroomde> 5 mins later i went up to my room where all my luggage was, and suit bags and jacket hung up and so on
[16:02] <eroomde> by magic
[16:02] <eroomde> and i have a little living room and a bedroom and a bathroom with a walk-in shower and 2 sinks
[16:02] <fsphil> the real Mr.Moore is gonna be surprised
[16:02] <eroomde> and a separate toilet for guests
[16:02] <eroomde> lol yes
[16:02] <eroomde> it's redic
[16:02] <eroomde> i could get used to this
[16:03] <eroomde> i have an espresso machine in my room
[16:03] <eroomde> which is also nice
[16:03] <Hix> I got mates rates at Coulthards hotel in Monte Carlo a few years ago when i was working at McLaren, it was a similar deal
[16:03] <eroomde> and some random bits of artwork, and a tv i can talk to and a big panel of brass buttons with different light offerings
[16:03] <eroomde> including 'mood'
[16:04] <eroomde> then we had a quick lunch in their restaurant and the hotel owner hurried out and mwah-mwah'd my sister who i was having lunch with
[16:05] <eroomde> the reason for all of this being her - she is a logisitcs manager for a firm that organized these great IPO world tours with 100 bankers and 100 senior executives at a time spending weeks going from obscene hotel to obscene hotel
[16:06] <eroomde> so she gives them about 7 figures of custom a year. my little sister. so she gets the odd freeb if she asks, like putting me up before my flight out of heathrow tomorrow
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[16:07] <eroomde> i enjoy engineering and i'm glad i do it... but oh how the other half live
[16:08] <Hix> at least you're getting a little acclimatisation to the weather before departure too
[16:08] <eroomde> lol yes
[16:08] <eroomde> it's dad's 60th tonight
[16:08] <eroomde> surpise party
[16:08] <fsphil> hah! it's my mum's 60th tonight
[16:08] <fsphil> also surprise party
[16:09] <fsphil> only a slightly smaller location :)
[16:09] <Hix> he'd probably be surprised at the bill for your suite :)
[16:09] <eroomde> we'e told him we're going out for dinner but infact (sister taking advnatage of her status again) we've managed to get most of his chums together and she's wanged a small banquetting room at the savoy.
[16:09] <eroomde> lol, i seriously hope my sister hasn't messed up and that they are all freebies
[16:10] <eroomde> i just looked up the rate online and nearly chocked
[16:10] <Hix> fairy liquid?
[16:10] <eroomde> :)
[16:11] <Lunar_Lander> fairy is like that stuff that you use to rinse dishes in germany
[16:11] <Hix> a little goes a long way - and there'd be a fiar bit of washing up to do if she had
[16:11] <Lunar_Lander> like a brand name
[16:11] <eroomde> i hope dad will like it. showiness is not his thing.
[16:11] <Hix> *fair
[16:11] <eroomde> same here Lunar_Lander
[16:12] <Lunar_Lander> ah
[16:12] <Hix> Lunar_Lander, it's common etiquette in the UK to offer to wash up when you can't pay for your meal or lodgings :)
[16:12] <Lunar_Lander> xD
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[16:17] <eroomde> my bathtub has a tv.
[16:17] Nick change: fsphil_ -> lihpsf
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[16:19] <daveake> A friend of mine rates hotels on how easy it is to watch TV from the tub
[16:19] <fsphil> hmpf.. none of the hotels I've been in had a tub. all showers
[16:20] <daveake> Stayed at a regular sort of hotel in the states once, which had a jacuzzi tub in the room, in view of the tv.
[16:20] <lz1dev> was about to say the same things fsphil
[16:20] <lz1dev> :(
[16:20] <lz1dev> thing*
[16:20] <eroomde> this is a first for me too
[16:20] <fsphil> is she free to organise HAB conferences?
[16:20] <eroomde> lol
[16:20] <daveake> lol
[16:20] <daveake> Has A Bath ?
[16:21] <eroomde> the one here currently, which is why they are bending over for her, is for rolls toyce
[16:21] <eroomde> royce*
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[16:21] <eroomde> they are renting 200 rooms/night for most of this week
[16:21] <eroomde> and using lots of meeting rooms and so on
[16:21] <eroomde> there's a battalion of rolls royces outside the front doing all the transport for thier people
[16:22] <daveake> you must be able to get a lift in one? :)
[16:22] <eroomde> right going to have some tea and cakes in 'the lobby lounge'
[16:22] <eroomde> bbl
[16:22] <daveake> bb
[16:22] <eroomde> i shall ask about UKHAS2013
[16:22] <daveake> </jealous>
[16:22] <daveake> Tell 'em we're all high fliers
[16:22] <Hix> :D
[16:22] <fsphil> very good
[16:23] <Hix> stratospheric earners
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[16:45] <Lunar_Lander> xD
[16:45] <Lunar_Lander> we are stars
[16:46] <Lunar_Lander> we were even on the BBC
[16:52] <griffonbot> Received email: Dave B "Re: [UKHAS] Mobile Tracking webapp"
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[16:54] <fsphil> my hand was on the BBC anyway :)
[16:54] <Hix> any links to documentation on dtostrf, can't find it in K&R
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[16:55] <fsphil> it's part of avr-libc
[16:55] <fsphil> the first result in google :)
[16:57] <Hix> i read that and it was shall we say, brief
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[16:58] <fsphil> this? http://www.nongnu.org/avr-libc/user-manual/group__avr__stdlib.html#ga060c998e77fb5fc0d3168b3ce8771d42
[16:59] <fsphil> that tells you all you need to know
[17:03] <Hix> i've read it but am not really sure how to use it to get my longs into sprintf.
[17:04] <fsphil> that function doesn't do longs, it converts floats to strings
[17:04] <fsphil> snprintf on avr-libc handles integers directly
[17:07] <fsphil> the format string can be a bit confusing if you've never used printf before
[17:10] <DrLuke> https://fbcdn-sphotos-g-a.akamaihd.net/hphotos-ak-prn1/149376_498726096836798_1932406168_n.jpg
[17:11] <griffonbot> Received email: RG-lz1dev "Re: [UKHAS] Mobile Tracking webapp"
[17:14] <daveake> DrLuke Tomorrow I shall be here - http://photos4.meetupstatic.com/photos/event/6/e/5/c/event_158068252.jpeg
[17:14] <fsphil> http://i.imgur.com/nznWrl1.jpg
[17:14] <DrLuke> haha
[17:14] <fsphil> I'm not quite sure that last image has any relation to reality
[17:15] <daveake> no beard
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[17:58] <cuddykid> lz1dev: small bug - the lat/long label for payload says "time" rather than co-ordinate or lat/lon
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[17:59] <cuddykid> lz1dev: also, the list doesn't scroll down well, I can't access the bottom few payloads/chase cars (iPhone using chrome)
[17:59] <cuddykid> it just springs back up hiding them
[18:02] <griffonbot> @adamcudworth: Making progress on my habhub iOS app #ukhas http://t.co/aAdPqV5G [http://twitter.com/adamcudworth/status/292693553409323008]
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[18:11] <lz1dev> cuddykid: the label is underneat the value
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[18:12] <cuddykid> lz1dev: yeah, and it says time underneath - it has a "time" label twice
[18:12] <lz1dev> o_o
[18:13] <cuddykid> lz1dev: http://i.imgur.com/1h4BAkp.jpg
[18:13] <lz1dev> im lookin at landscape
[18:14] <lz1dev> indeed it shows time
[18:14] <lz1dev> :(
[18:16] <lz1dev> update is pushed the repo
[18:19] <lz1dev> cuddykid: would expanding an element
[18:19] <lz1dev> fix the scrolling?
[18:20] <cuddykid> lz1dev: looks like it
[18:20] <cuddykid> can't replicate it atm
[18:20] <cuddykid> lz1dev: ah, no, just tried in landscape and expanded an element, scrolling bug still persists
[18:22] <chrisstubbs> Is the app on cydia?
[18:23] <lz1dev> cuddykid: i think i have a solution
[18:24] <cuddykid> chrisstubbs: lz1dev's web app can be accessed at habhub.org/mt - my iOS app will be in the app store when it's complete (hopefully)
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[18:27] <chrisstubbs> Nice! mobile site looks great :) Is the iphone app just going to be like the android chase car app, or a full spacenearus clone?
[18:28] <cuddykid> chrisstubbs: it's going to be a native spacenearus clone + chase car tracker + payload finder
[18:29] <mattbrejza> i hope the payload finder is somethng that beeps, the more beeps the closer you are
[18:29] <cuddykid> heh
[18:29] <mattbrejza> or something that shouts 'hot' 'hotter' etc
[18:29] <eroomde> the beep should be in the style of cold-war sonar
[18:29] <chrisstubbs> Sounds great, I'm on android for my phone but will ahve a play with it on my iPod when it comes out
[18:29] <chrisstubbs> haha
[18:30] <lz1dev> chrisstubbs: you can run habhub.org/mt
[18:30] <lz1dev> on your phone or pad
[18:30] <lz1dev> infact, on iOS devices you can add it as an icon
[18:33] <daveake> Make it look like a Star Trek Tri-corder
[18:33] <eroomde> i'd quite like the american cia van
[18:34] <eroomde> some electronic espionage nerdy types sitting in the back with screens and general darkness or redlight
[18:34] <lz1dev> green light?
[18:34] Action: daveake hums A-Team music
[18:34] <eroomde> red-light so as not to mess with your cave vision
[18:34] <eroomde> we have red light in the control room when we're firing
[18:34] <eroomde> and we also adopt russian accents
[18:35] <lz1dev> òîâà å ëåñíî
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[18:35] <eroomde> something like that
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[18:40] <Lunar_Lander> XD
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[19:43] <dharnke> i had a question, i wanted to remotely use ucenter (with my ublox connected) via the NTX2
[19:43] <dharnke> is that possible
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[19:44] <chrisstubbs> i guess you could broadcast all the NMEA strings if you cranked the GPS update frequency down, but you would need to find a way to pipe the data from dlfldigi into a virtual com port
[19:45] <chrisstubbs> what does ucenter offer that for example, spacenear.us does not?
[19:45] <cuddykid> dharnke: it would be ugly
[19:45] <fsphil> ucenter pretty much requires two-way communications
[19:46] <fsphil> you shouldn't need to do this though
[19:49] <dharnke> i wanted to view my ublox using a live mapping software
[19:51] <griffonbot> Received email: chris hillcox "[UKHAS] Listening into radio sondes"
[19:52] <daveake> jeez
[19:52] <mattbrejza> the radio sonde police will come knocking if they see an antenna on your roof
[19:52] <daveake> I think I'll write an article on general relativity, because I know f-all about it
[19:52] Action: craag thought articles are meant to be written by people who know something of the subject matter?
[19:52] <dharnke> what functions does spacenear offer
[19:53] <Upu> well spotted craag
[19:53] <Upu> lol
[19:53] <Hix> have I got this dtostrf thing right? Doesn't seem to be putting anything in to the buffer http://pastebin.com/8xyp6z9J
[19:53] <Upu> Hi all I'm writing an article on women..
[19:53] <daveake> lol
[19:54] <Laurenceb_> what?
[19:54] <griffonbot> Received email: chris hillcox "[UKHAS] How thick is the polystyrene in your payload box?"
[19:54] <Laurenceb_> whats one of them?!
[19:54] <Hix> think I understand them better than C
[19:55] <daveake> Hix you need %s not %d in your sprintf
[19:55] <daveake> 'cos lonbuf/latbuf are strings
[19:55] <mattbrejza> engineering by survery - where have we seen that before...
[19:56] <Hix> ahh, oversight. cheers. 'part from that am I headed in the rught direction?
[19:56] <mattbrejza> well 'engineering'
[19:56] <craag> dharnke: Have you watched it during a flight? It's basically live as long as at least one person somewhere is decoding with dl-fldigi and has an internet connection.
[19:56] <daveake> Upu this may help http://www.steveleenow.net/humour/lp/MenVsWomenSwitches.jpg
[19:57] <Upu> haha
[19:57] <daveake> (you've probably seen that before)
[19:57] <Upu> I have still funny
[19:57] <dharnke> ok, and the decoding does that involve decoding long and lat data
[19:59] <craag> dharnke: Have you looked at the wiki? http://ukhas.org.uk/
[19:59] <daveake> dharnke basically, the tracker gets long/lat/alt/time from the GPS, and then builds a telemetry string containing those values plus the payload name plus temperature etc (up to the user).
[19:59] <craag> Particularly: http://ukhas.org.uk/communication:protocol
[19:59] <daveake> dl-fldigi receives and uploads to habitat
[19:59] <daveake> habitat sends to spacenear
[19:59] <daveake> spacenear plots on map
[19:59] <daveake> the_end
[20:00] <dharnke> i see, thanks for the help
[20:00] <daveake> today's funny pic https://fbcdn-sphotos-f-a.akamaihd.net/hphotos-ak-prn1/72971_10151233063867654_1863943458_n.jpg
[20:02] <lz1dev> :D
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[20:14] <Lunar_Lander> hi mclane
[20:15] <griffonbot> Received email: mclane "[UKHAS] Re: How thick is the polystyrene in your payload box?"
[20:15] <mclane> Hi Lunar_Lander
[20:15] <Lunar_Lander> how are you today?
[20:15] <mclane> good
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[20:15] <mclane> and how about you?
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[20:17] <Lunar_Lander> quite good too, thanks
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[20:19] <griffonbot> Received email: Radim Mutina "Re: [UKHAS] How thick is the polystyrene in your payload box?"
[20:20] <Lunar_Lander> the styrofoam thickness?
[20:20] <Lunar_Lander> 8 km
[20:20] <Lunar_Lander> xD
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[20:21] <mattbrejza> reply in furlongs or something
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[20:23] <Lunar_Lander> xD
[20:26] <radim_OM2AMR> Lunar_Lander :-D
[20:27] <Hix> am i correct that altitude is going to need to be a long as int is only 32667? And that'll need what kind of conversion to string?
[20:28] <mattbrejza> int is generally 4 bit so has a max of 4000000000 or so
[20:29] <daveake> 4 byte :)
[20:29] <mattbrejza> oops
[20:29] <number10> it will need to be unsigned=16bit
[20:29] <RocketBoy> int is generally only 4 bytes on 32bit processords
[20:30] <daveake> unsigned 16 is fine; just take care if it lands in the sea and the gps reports -1m
[20:31] <daveake> A 65535m record claim is likely to be rejected :)
[20:31] <Hix> was thinking uint is no good if it goes -ve
[20:31] <Lunar_Lander> dave yeah
[20:31] <Lunar_Lander> xD
[20:32] <Lunar_Lander> btw I hardcoded 64000 m into the code before the processing
[20:32] <Lunar_Lander> and it came out right
[20:32] <Lunar_Lander> so the datatype is OK
[20:32] <daveake> optimistic
[20:32] <mattbrejza> assuming this is avr uint_16 or whatever it is works best to not having to worry about byte lengths
[20:32] <mattbrejza> is int 8 bit on the avr? :/
[20:32] <daveake> indeedy
[20:33] <mattbrejza> oh ok
[20:33] <mattbrejza> yea uint_16 ftw
[20:34] <number10> I best not land in the sea next time daveake, as I think I have uint16
[20:34] <daveake> You do, I remember :)
[20:36] <Hix> so if it ditches and goes -ve it'll report 65535? But this can be verified by a. is bollo... and b. previous alt in habhub was near 0, correct?
[20:37] <number10> I am sure some one will spot the rapid ascent
[20:38] <Hix> so it doesnt really mnatter about uint_16 then?
[20:38] <Lunar_Lander> xD
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[20:38] <mattbrejza> i had a 32bit signed int for my altitude
[20:38] <mattbrejza> (int32_t) - remember to include inttypes
[20:38] <mattbrejza> or whatever it is
[20:38] <daveake> You can check when parsing anyway. Just set alt=0. Close enough for our purposes unless you intend to launch from or land in the Dead Sea
[20:39] <daveake> Or as Matt says expicitly choose a 32-bit signed int
[20:40] <mattbrejza> a int will be slower but it really doesnt matter, you barely do anythnig with it
[20:41] <daveake> Indeed. Or ... if you're not doing anything with it aside from sending it, leave as a string
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[20:44] <Hix> looking at TinyGPS.h I see this:
[20:44] <Hix> // signed altitude in centimeters (from GPGGA sentence)
[20:44] <Hix> inline long altitude() { return _altitude; }
[20:44] <Hix> cm, looks like error. what's an inline long
[20:44] <Lunar_Lander> well the ublox gps actually outputs an altitude in mm
[20:44] <SpeedEvil> an inline function
[20:45] <SpeedEvil> returning a long
[20:46] <daveake> long is 32-bits for Arduino
[20:48] <daveake> Lunar_Lander tinygps returns the altitude in metres not mm
[20:50] <Lunar_Lander> ah
[20:50] <Lunar_Lander> but when you use the UBX protocol it does that
[20:50] <Lunar_Lander> was just a side remark
[20:51] <mattbrejza> can only assume thats to avoid fixed point representation
[20:51] <daveake> The code Hix referred to is where the library returns the altitude; how the library gets that from the GPS is independent
[20:59] <Hix> whilst it's in my mind, what is the advantage of tinyavrusb over using arduino as isp?
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[21:25] <chrisstubbs> Has anybody used this before? http://code.google.com/p/tinkerit/wiki/SecretThermometer
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[21:27] <BrainDamage> don't rely on it for ambient measurement
[21:28] <Hix> was gonna say, it'll be processor temp no?
[21:28] <BrainDamage> yes
[21:28] <chrisstubbs> Thinking about throwing it into my tracker code, just for the sake of it
[21:28] <chrisstubbs> Any reccomendations when it comes to external thermometers?
[21:29] <daveake> DS18B20 is popular
[21:30] <chrisstubbs> Might just pick one of those up too then :)
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[21:32] <Hix> so, I think I've got something that will generate "callsign, count, lat, long, alt, checksum" - need to hook it up then see if it works. After that it's a coversion to Serial as opposed to SoftwareSerial
[21:32] <Hix> time, not toworried about, seemed to work prety easily last time i tried to parse it
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[21:37] <daveake> Please include the time. Otherwise people watching spacenear won't know how long since last update. Also habitat might need it (dunno for sure)
[21:38] <mattbrejza> you can include time and not count
[21:38] <mattbrejza> not sure about the other way round, but essentially dont do it
[21:38] <daveake> ISTR some issue with a flight recently where it didn't include the count
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[21:40] <Hix> no no no that will be in the payload, just for my testing so far it is missing. I just need to get something working so i can test, break, learn, improve ad infinitum
[21:41] <daveake> no reason not to put it in from the start IMO
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[21:42] <mattbrejza> habjoe did have count, and this was its payload config with hotfix, dunno what it was for though http://habitat.habhub.org/habitat/f4a243a2794eb2bc112be3999d02c9e9
[21:42] <mattbrejza> but yea count is always good if gps fails and you still want other data in the mean time
[21:42] <Hix> it will, once i've proven that this rev works. pointless trying to get loads of parameters in and finding out it still fails. itterative steps win imho
[21:43] <Hix> i've parsed time, but don't have that sketch here so it can be inserted once i get it off the stick its on
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[21:56] <ginodude> cls
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[22:21] <Lunar_Lander> hi Brian
[22:21] <OZ1SKY_Brian> hi lunar
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[22:26] <Lunar_Lander> how is the life?
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[23:49] <craag> This looks like it might be useful: https://play.google.com/store/apps/details?id=marto.androsdr
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[23:52] <KT5TK> Is there anybody out there who can approve my flight document for tomorrow? BLT33 / KT5TK?
[23:54] <x-f> KT5TK, try #habhub better
[23:54] <KT5TK> OK will try
[00:00] --- Sun Jan 20 2013