highaltitude.log.20100703

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[07:56] <jcoxon> ping natrium42
[07:56] <natrium42> yo jcoxon
[07:56] <natrium42> sup?
[07:57] <jcoxon> hey natrium42
[07:57] <jcoxon> was wondering if i could be cheeky and borrow your spacenear.us server
[07:57] <natrium42> sure, what do you plan to do with it?
[07:58] <jcoxon> wanted to put on a cusf landing predictor but change it to predict floats
[07:58] <jcoxon> so an hourly float predictor
[07:59] <natrium42> oh, ok
[07:59] <natrium42> feel free to do it
[07:59] <jcoxon> its mainly because for some reason i can't download enough gfs data on my home server
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[08:05] <rjharrison> Morning all
[08:05] <jcoxon> morning
[08:05] <natrium42> hi rjharrison
[08:05] <rjharrison> Hey natrium42
[08:05] <rjharrison> morning jcoxon
[08:05] <rjharrison> Anything exciting in the HAB world today?
[08:05] <natrium42> something that might be useful for ballooning --> http://www.engadget.com/2010/07/01/pixelqi-diy-netbook-display-replacement-kit-finally-on-sale/
[08:06] <natrium42> as we use netbooks in outdoors :)
[08:06] <natrium42> a bit pricy though
[08:08] <jcoxon> hehe
[08:08] <jcoxon> natrium42, BallastHalo 5 launch perhaps next friday
[08:08] <natrium42> ooh, cool
[08:09] <rjharrison> natrium42 I'll be buying on when it works with the asus. That looks fantastic
[08:09] <natrium42> rjharrison, it does, as a matter of fact
[08:09] <natrium42> one sec, got video link
[08:09] <rjharrison> jcoxon, cool do you have much left to do for BH5
[08:10] <jcoxon> http://www.flickr.com/photos/jcoxon77/4754113171/in/set-72157624376182662/
[08:10] <jcoxon> not really
[08:10] <jcoxon> need to finish the webbing rig for the ballast tank
[08:10] <jcoxon> and write some code to check that the ublox is in airborne mode
[08:11] <jcoxon> yesterday ran lots of scenarios to test everything
[08:11] <jcoxon> such as that the gps carries on working when the pump is turned on a la BH4
[08:14] <natrium42> rjharrison, http://blog.makezine.com/archive/2010/06/hackable_pixel_qi_screens_available.html
[08:14] <natrium42> oh, that's an Acer Aspire One...
[08:14] <rjharrison> jcoxon, ok smarty pants how did you do that overlay image in flicker. Payload looks very nice
[08:14] <natrium42> not sure about Asus
[08:14] <jcoxon> oh you add notes
[08:14] <rjharrison> natrium42, no problem
[08:15] <m1x10^Afk> hello
[08:15] Nick change: m1x10^Afk -> m1x10
[08:15] <natrium42> bed time, nite
[08:15] <rjharrison> jcoxon I'll have to have a play with that
[08:15] <jcoxon> night natrium42
[08:15] <m1x10> night? here is morning :P
[08:15] <rjharrison> natrium42 nights
[08:15] <natrium42> yeah, 3am
[08:15] <natrium42> early morning :P
[08:15] <rjharrison> jcoxon, did you see this http://infinity2010.weebly.com/
[08:15] Action: natrium42 Zzz
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[08:15] <m1x10> gnite
[08:15] <juxta|console> morning all
[08:16] <rjharrison> evening juxta
[08:16] <m1x10> what's the use of "Peristaltic Pump" ?
[08:16] <jcoxon> yeah
[08:16] <jcoxon> m1x10, pump ballast
[08:16] <jcoxon> pump ballast out to reduce mass
[08:16] <juxta|console> planning a launch here for Thurday I think :)
[08:18] <jcoxon> wow, lots of launches
[08:20] <m1x10> jcoxon: what mass exactly?
[08:20] <rjharrison> alcohol iirc
[08:21] <jcoxon> ethanol/methanol mix
[08:21] <m1x10> where does that mix come from?
[08:21] <juxta|console> methylated spirits?
[08:21] <jcoxon> its surgical spirits
[08:27] <juxta|console> jcoxon: when are you planning on launching again?
[08:30] <jcoxon> probs friday evening
[08:31] <juxta|console> oh wow, soon :)
[08:31] <juxta|console> another BH launch?
[08:31] <jcoxon> yeah
[08:31] <jcoxon> the payload is pretty much finished
[08:31] <jcoxon> just need to write that code to check the airborne mode
[08:31] <jcoxon> as edmoore pointed out if we have a gps reset would need to put it back in to the mode again
[08:32] <juxta|console> yep, thats a good point
[08:33] <juxta|console> should be easy enough to do, I'll have a play with it tonight
[08:33] <jcoxon> oh great
[08:33] <jcoxon> if you get there first...
[08:33] <juxta|console> haha
[08:33] <juxta|console> I'll be home in a few hours, then I can have a go
[08:34] <jcoxon> cool cool
[08:34] <juxta|console> if you want to do it, have a play around in u-center - you can actually view the sentences as they get bounced around, so you know what you're looking for
[08:34] <jcoxon> oh right
[08:34] <jcoxon> i'm away from my payload for the weekend
[08:35] <juxta|console> alright - will you be launch from CU?
[08:35] <juxta|console> hopefully I'll be awake to follow :)
[08:36] <jcoxon> yeah, well it might be an all nighter so will rely on you to do some tracking!
[08:36] <jcoxon> if i get some time will rig up my ft790 for internet control
[08:37] <juxta|console> awesome, was just going to ask about that
[08:37] <jcoxon> i'll try and get it setup
[08:37] <juxta|console> I'm hoping that we can use a ham shack we have access to when I launch on thurs
[08:37] <jcoxon> i'm wondering would it be easier to just stream the audio
[08:37] <jcoxon> and get people to tune up and down
[08:40] <juxta|console> hm, will someone be awake to do it?
[08:41] <jcoxon> natrium can run it for a bit
[08:41] <jcoxon> then you!
[08:41] <jcoxon> hehe
[08:41] <juxta|console> oh no I meant to actually tune it manually
[08:41] <jcoxon> don't worry if not
[08:41] <jcoxon> oh i'll rig it to computer control it
[08:41] <juxta|console> awesome - in that case, no worries :)
[08:42] <juxta|console> what time are you thinking of launching?
[08:42] <juxta|console> streaming the audio might work well, then we could record it too if need be
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[08:43] <jcoxon> yeah i've done that before, used soundflower to loop the sound back into dl-fldigi
[08:43] <jcoxon> but that'll only work on mac
[08:43] <juxta|console> alternatively a 3.5mm audio cable should do the trick
[08:44] <juxta|console> ;p
[08:44] <jcoxon> so sunset is at 21:17
[08:44] <jcoxon> i assume BST
[08:44] <juxta|console> actually I think under windows you can set the mic input as 'stereo mix' so that fldigi will 'hear' whatever audio you play
[08:46] <juxta|console> jcoxon: so you'll be aiming to launch around sunset?
[08:46] <jcoxon> so launch 2hrs before
[08:46] <juxta|console> oh, okay
[08:46] <jcoxon> want to be quite high by sunset
[08:46] <juxta|console> BST = GMT + 1:00?
[08:46] <jcoxon> yeah
[08:46] <juxta|console> okay
[08:48] <jcoxon> yeah so sunset is 20:17 GMT, sunset at altitude will be ~ 1hr later so 21:00GMT
[08:48] <jcoxon> so we'll launch at 18:00GMT
[08:48] <juxta|console> yep
[08:49] <juxta|console> I'll be up around 11:00pm - midnight BST I guess
[08:49] <jcoxon> hehe we'll i'll certainly be tracking for quite a while
[08:49] <jcoxon> the ballast tanks however if they work could shorten the flight
[08:49] <jcoxon> as they 'should' break the float and will make us rise perhaps to burst
[08:49] <juxta|console> is it a ZP balloon? or latex?
[08:50] <jcoxon> latex with a pin hole vent
[08:51] <juxta|console> do you just prick a hole in the neck?
[08:51] <jcoxon> no we use a pvc pipe with a stopper and then drill a 1.5mm dia hole
[08:51] <jcoxon> the size of the hole is important
[08:52] <jcoxon> BH4 the stopper slipped i think so our vent was massive hence why it didn't go very high
[08:52] <juxta|console> ah, right
[08:52] <juxta|console> 1.5mm sounds quite large
[08:52] <jcoxon> remember the pressue isn't that large in the balloon itself
[08:53] <juxta|console> ah right, yeah
[08:59] <juxta|console> jcoxon: where do you track from?
[09:00] <jcoxon> i'll probably track from cambridge
[09:00] <jcoxon> depends really
[09:01] <jcoxon> on the number of listeners
[09:01] <jcoxon> i'll leave my ft790 in london
[09:01] <juxta|console> do you live in London?
[09:01] <jcoxon> yrah
[09:01] <jcoxon> poo
[09:01] <juxta|console> ah righto - how hard is it to get a good signal there?
[09:01] <jcoxon> natrium has gone to sleep
[09:01] <jcoxon> its not too bad
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[09:04] <juxta|console> do you use the ft790 with a whip, or with a directional antenna? (when internet connected)
[09:04] <jcoxon> i was thinking the whip
[09:05] <jcoxon> i'll put it up as hig has i can
[09:05] <jcoxon> i think i'll make a GP antenna 1/4 wave
[09:06] <juxta|console> maybe if you have one of those 1/4 + 1/2 wave stacked whips, they're a bit higher gain, would be good when the balloon is getting further away?
[09:06] <jcoxon> never seen those before
[09:09] <juxta|console> mine looks something like this jcoxon: http://www.buxcomm.com/catalog/images/144-440whip.jpg
[09:09] <juxta|console> (though not advertised as a dual band)
[09:10] <jcoxon> yeah that might suit
[09:11] <juxta|console> here we go:
[09:11] <juxta|console> http://www.mobileone.com.au/antennas/antennaimages/m430.png
[09:11] <juxta|console> that's mine - it's advertised as 4.5dB gain, so I guess it's dBi
[09:12] <jcoxon> oh similar to the one i got with my ft817
[09:12] <jcoxon> dual band whip
[09:12] <juxta|console> it's a collinear antenna evidently
[09:13] <juxta|console> it's not dual band though - it's suited to 425-445 mhz
[09:14] <jcoxon> oh right
[09:16] <jcoxon> i'll make something
[09:16] <juxta|console> do you know which way your payload will be blown jcoxon?
[09:16] <jcoxon> got a bit of time next week
[09:16] <jcoxon> just running a predictor right now
[09:17] <jcoxon> been messing around with the cusf hourly predictor to do floats
[09:17] <juxta|console> :)
[09:17] <jcoxon> still a little early though considering its a week away
[09:17] <juxta|console> there's someone interested in launching in NL who's beeing emailing me, I think he'd be able to track for you too
[09:18] <jcoxon> juxta| here is a very rough version
[09:18] <jcoxon> http://spacenear.us/float-prediction/
[09:18] <jcoxon> you'll need to zoom out
[09:18] <jcoxon> bascially i removed the descent part
[09:19] <jcoxon> so it stays at its max alt until it runs out of gfs data
[09:20] <juxta|console> oh right, so it'll be blowing out towards Ireland then
[09:20] <jcoxon> yeah
[09:20] <jcoxon> but i doubt it'll get that far
[09:21] <jcoxon> and then when it bursts it'll go back east again
[09:21] <juxta|console> alrighty
[09:21] <juxta|console> so it might even be possible to recover :)
[09:21] <juxta|console> (if you fancy a bit of a drive)
[09:21] <m1x10> jcoxon: is it possible to send to the ublox chip commands to disable the output of specific nmea sentences?
[09:21] <jcoxon> m1x10, yes
[09:21] <jcoxon> there is a page on the ukhas wiki
[09:22] <juxta|console> m1x10: search for fsa03 :)
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[09:23] <m1x10> Im currently sending NMEA style commands such as "$PSRF103,1,0,0,1*25" to EM-406 and works fine.
[09:23] <m1x10> is the same for ublox?
[09:23] <jcoxon> m1x10, yeah it'll be similar but not exactly the same
[09:23] <jcoxon> http://ukhas.org.uk/guides:falcom_fsa03#nmea
[09:23] <m1x10> ok, just wondering if its in nmea format
[09:24] <jcoxon> but
[09:24] <jcoxon> you'll also need to shift the 'mode' to airborne
[09:24] <jcoxon> so you'll need to send a ubx command as well
[09:24] <m1x10> yes, im watching your discussions here about this matter
[09:24] <jcoxon> juxta|console, perhaps an arduino lib...
[09:24] <juxta|console> i'll polish up that page a bit and see if I can put a library together :)
[09:25] <m1x10> I just wanna be sure about ublox before buying it.
[09:26] <juxta|console> I considered writing a full blown UBX parser jcoxon, but I opted to just hardcode the commands instead - I guess a library might warrant full support
[09:26] <m1x10> I see that this guy wrote this code for arduino. Thats awesome.
[09:27] <jcoxon> m1x10, hehe thats juxta|console and I
[09:27] <jcoxon> :-p
[09:27] <juxta|console> teehee
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[09:28] <juxta|console> I was reading over the code before, I think I need to correct something on the ack method jcoxon, but I wanted to tested it before I change it
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[09:28] <jcoxon> hehe i haven't even included the ack method yet
[09:28] <jcoxon> :-p
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[09:28] <juxta|console> oh, it works OK, but I'm skipping the last checksum byte, whoops
[09:29] <m1x10> wow, cool guys.
[09:29] <juxta|console> instead of if (... == 9), it should be if (... > 9)
[09:30] <jcoxon> oh i see
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[09:38] <m0tek> good morning all
[09:38] <jcoxon> morning m0tek
[09:38] <m1x10> hi m0tek
[09:38] <m0tek> hi m1
[09:38] <m0tek> m1x10*
[09:42] <m0tek> m1x10, have you had a chance to do any more reading or experimentation
[09:42] <m0tek> ?
[09:44] <juxta|console> hey m0tek
[09:44] <m1x10> m0tek: two days now I'm not sleeping
[09:44] <juxta|console> any news on your possible PHD placement?
[09:44] <m1x10> all time surfing the inet to collect info
[09:45] <m1x10> but I think this IRC channel provides me the most
[09:45] <m0tek> juxta, won't find out till beginning of august
[09:46] <m0tek> m1x10, certainly we have built up a substantial collection of mistakes we've all made
[09:46] <m1x10> Now Im thinking of building another ARPS module with GSM than HAM
[09:47] <juxta|console> righto m0tek
[09:47] <juxta|console> fingers crossed ;p
[09:47] <m0tek> yup :)
[09:47] <m1x10> that would be: 1. gsm modem 2. sirfIII gps 3. arduino
[09:47] <m0tek> also fingers crossed for my bologese sauce which has been cooking at 80 celcius for 24 hrs now
[09:48] <m0tek> having it for lunch.
[09:48] <m1x10> and I will put the new ublox gps to my original HAM APRS
[09:48] <m0tek> m1x10, that sounds like a good idea
[09:49] <m1x10> have you ever tried GSM on HAB ?
[09:49] <m0tek> yep, used to fly it quite a lot
[09:49] <juxta|console> m1x10: a few people have, but it's a bit of a grey area with regards to the law
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[09:49] <m0tek> but the radio became relaiable enough that we stopped bothering
[09:50] <m1x10> the GMS APRS should only be used when its about to land
[09:50] <juxta|console> what's the situation in the UK like with regards to buying a prepaid sim? can you just buy it off the shelf?
[09:50] <jcoxon> juxta|console, yup
[09:51] <m1x10> In GR you have new law, that makes us give you identities when buying new sim number
[09:51] <m1x10> *remove the 'you' in the sentence*
[09:51] <juxta|console> that's the way it was here in days gone by - until someone decided that it was a huge risk to national security and now you've got to submit paperwork, show ID, there's a limit to how many sims you can own, etc etc.
[09:52] <m0tek> we can just buy one simply
[09:52] <m0tek> eg in Bourne Ultimatum
[09:52] <m1x10> ah, that terrorism :)
[09:52] <juxta|console> oh no! a (somewhat) anonymous phone! run!
[09:52] <m1x10> :P
[09:54] <jcoxon> m0tek, tis true but they would see you buying it on cctv so they know!
[09:54] <m0tek> that';s true
[09:54] <jcoxon> they'd zoom in on the image, draw a box around it and magically they'd see the number on the sim card packaging
[09:54] <juxta|console> thankfully you can buy a sim card for $2 from any service station and they often don't bother with the paperwork and the like
[09:55] <m0tek> the guy at the local hardware shop was suspicious of selling me a torx 6 screwdriver to get into my old nokia
[09:55] <m1x10> hahaha
[09:55] <juxta|console> hehe
[09:55] <m0tek> worried I was going to make an IED
[09:56] <m0tek> I eventually showed him our website and he gave it to me for free
[09:56] <m1x10> respect
[09:56] <m0tek> the power of teddies in space...
[09:58] <juxta|console> m0tek: you should have assured him you were perfectly capable of making a far better IED without a mobile, that'd put his mind at ease :)
[09:58] <m0tek> well exactly!
[09:59] <m0tek> a guided parachute device deployable from the edge os space
[10:03] <fsphil> enough trigger words there I think ... *waves to the CIA*
[10:04] <m0tek> yes i often wonder about that
[10:04] <m0tek> there's that bash.org quote
[10:04] <fsphil> I know the one
[10:04] <m0tek> http://bash.org/?88575
[10:04] Nick change: m1x10 -> m1x10^Afk
[10:06] <m0tek> silly really when a pickup truck with 1.5 tonnes of fertiliser in the back would be far more effective at upsetting things
[10:06] <fsphil> nah, if someone wanted a phone to do something bad they'd just steal one
[10:07] <jcoxon> fsphil, they won't know the unlock code
[10:07] <jcoxon> is it the centre button then star
[10:07] <jcoxon> or hash
[10:07] <jcoxon> just never know
[10:07] <fsphil> if it's locked
[10:07] <jcoxon> :-p
[10:08] <juxta|console> or even the leftmost button followed by some sort of weird triangle in an awkward spot
[10:08] <juxta|console> (thanks for making my lift hard nokia)
[10:09] <juxta|console> life*, even
[10:10] <fsphil> I dabbled with the Freerunner a while back, turn it on and get a pure text linux login screen -- that's hard. esp. cause there's no keyboard :)
[10:12] <juxta|console> that does sound convenient after you've had a few drinks
[10:13] <fsphil> they had a lot of potential with those phones, but the software was just awful.
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[10:25] <griffonbot> @jamescoxon: #bh5 #ukhas #arhab potentially launching Fri 9/07/10 from Chu, Camb @ ~18:00UTC [http://twitter.com/jamescoxon/status/17637717008]
[10:25] <m0tek> spam
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[10:26] Nick change: m0tek -> eroomde
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[10:42] <m1x10^Afk> m0tek: some guy used 3 balloons instead of 1 balloon and 1 parachute
[10:42] <m1x10^Afk> http://zeckalpha.org/winona-field-day
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[12:30] <cuddykid> Hi all, can someone who is familiar with tinygps library please have a look at my code and tell me what i'm doing wrong! I'm tarring my hair out here!! http://pastebin.org/379233 On the serial monitor all I see is "LAT: 100000.00000" ??! :S
[12:32] <DanielRichman> there's a function you need to call. Hold on
[12:33] <cuddykid> danielrichman, ok, thanks :)
[12:33] <DanielRichman> try this http://pastebin.org/379240
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[12:34] <cuddykid> thanks, will try now!
[12:37] <cuddykid> DanielRichman, hmm now nothing seems to be appearing in the serial monitor :S!
[12:37] <DanielRichman> eeeh
[12:38] <cuddykid> it must have lock as it's outside in the open and if I run other code I can see the nmea strings
[12:38] <cuddykid> ahhhh!! FANTASTIC! I see LAT!!
[12:38] <cuddykid> thank you! Working now :)
[12:39] <cuddykid> now I can progress!
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[13:03] <cuddykid> how many decimal places do you normal give the lat/long down to?
[13:03] <juxta> cuddykid: 4 is good
[13:03] <juxta> that will give you ~10m accuracy
[13:04] <cuddykid> ok, cool :)
[13:12] <cuddykid> does anyone know how to convert a floating number to a string using the sprintf ?
[13:14] <juxta> cuddykid: by default the arduino sprintf() implementation won't let you convert a float to a string
[13:15] <juxta> cuddykid: http://pastebin.org/379377
[13:17] <cuddykid> juxta, thanks
[13:18] <juxta> np
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[13:44] <eroomde> greetings notice
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[13:44] <eroomde> charming
[13:48] <Hiena> He left without a notice.
[13:49] <eroomde> .
[13:49] <DanielRichman> wouldn't it be easier and faster to have tinygps keep the lat & lon as integers/fixed-precision
[13:49] <juxta> DanielRichman: I believe it does
[13:50] <DanielRichman> oh I see.
[13:50] <DanielRichman> get_position and f_get_position
[13:52] <juxta> hey eroomde, what do you think about setting the nav mode on the ublox modules? at the moment I'm just setting the module to airborne at boot, and checking the ACK to make sure it was done. jcoxon mentioned it might be a good idea to poll it too to ensure it's still set incase of any hickups - have you used them much?
[13:53] <juxta> ping junderwood
[13:53] <eroomde> i don't think we poll them ever
[13:53] <eroomde> but, a 'reset gps' fuction if it fails sanity checking is a good thing
[13:54] <juxta> yeah
[13:54] <eroomde> and you could maybe poll it every so often and add the mode as a criteria for a reset
[13:54] <juxta> so far i just set the mode - I'll just write a method to poll, assess & set if need be I think
[14:03] <SpeedEvil> And only reset once every x mins max?
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[14:24] <cuddykid> guys, can i ask a favour again! Could someone have a look at my code (what I thought was completed, but obv not!) and tell me why I only receive "GPS DATA NOT AVAILABLE" even when I've got a lock?! http://pastebin.org/379594
[14:29] <DanielRichman> cuddykid, for every character that it receives gps.encode(c) will return false until the last one in the sentence
[14:29] <DanielRichman> remove the line that says gps data not available. It's a good idea to implement that feature but you need to do it a different way
[14:30] <cuddykid> DanielRichman, i'm not quite sure what you mean about the gps.encode(c) :S! ok, i'll remove the else bit :)
[14:31] <DanielRichman> Serial.read() provides and gps.encode(c) takes one character at a time
[14:31] <DanielRichman> so gps.encode gets called for every character in each nmea string
[14:31] <DanielRichman> one by one
[14:31] <DanielRichman> and it returns false each time to tell you that the string hasn't finished yet
[14:32] <DanielRichman> when it returns true it's saying that it has valid data to give to you
[14:32] <cuddykid> ok, i get you now
[14:32] <DanielRichman> also what is this? pinMode(Power_out, OUTPUT);
[14:32] <cuddykid> thats the pin thats supplying 5v power to the ntx2
[14:32] <DanielRichman> isn't there a dedicated 5V out from the arduino?
[14:33] <cuddykid> how come its continually returning false if its got valid gps data?
[14:33] <DanielRichman> it returns true when it has new valid data
[14:33] <DanielRichman> ie data has just been updated because a valid string has just finished
[14:33] <cuddykid> I haven't been able to get it to work properly, I tried it earlier yet it just heats the arduino up and then it starts to burn :S !!
[14:33] <DanielRichman> providing power to a module through a pin isn't he best practice
[14:34] <DanielRichman> each pin has a current rating much lower than the amount of current you can draw through the dedicated 5v out
[14:34] <cuddykid> ok, does that mean that i haven't got a gps lock then if i'm not getting valid strings?
[14:34] <cuddykid> ok, I see about what you mean about 5v pin
[14:34] <DanielRichman> if you haven't got a lock gps.encode won't return true. If you have got a lock gps.encode will return true for one character, the last one in the nmea string
[14:35] <DanielRichman> cuddykid, if powering the ntx2 through the 5v pin cauzes burning, then powering it through an IO pin is probably very bad
[14:35] <cuddykid> oh dear! ok, i'll try and get the 5v pin working or some other work around!
[14:35] <DanielRichman> you need to find out why it is drawing so much current, or shorting
[14:35] <DanielRichman> get a multimeter out and check that 5V isn't shorted to 0V
[14:36] <cuddykid> hmm, about the gps.encode, It works with just Serial.print() but as soon as I use the rtty code then it doesn't want to work :S
[14:37] <cuddykid> ie I haven't changed anything but when I upload this code to the board it doesn't return true but earlier with the different code which was outputting lat to serial it was returning true
[14:37] <DanielRichman> so the only use of rtty_txstring is inside the if (gps.encode) block/
[14:39] <DanielRichman> ?
[14:39] <cuddykid> yep, however earlier I put the callsign and time was running for outside of the "if (gps.encode)" and that was the only thing that got outputted by ntx2
[14:39] <DanielRichman> yes that I can understand
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[14:39] <cuddykid> so, whatever I put inside of the if gps.encode, doesn't work
[14:40] <DanielRichman> have you tried it since then without the callsign and time outside the if block?
[14:40] <cuddykid> yes, as the code is at the moment
[14:40] <cuddykid> they're currently inside the block
[14:40] <DanielRichman> putting that outside of the block means that since rtty_txstring takes so long the serial buffer would overflow and some of the nmea would be lost
[14:41] <cuddykid> ahh, i see
[14:41] <DanielRichman> I don't know why that is
[14:43] <cuddykid> hmm, so would putting data into buffer sort it out?
[14:43] <DanielRichman> no it doesn't matter since you don't have anything outside of the block now
[14:44] <cuddykid> ok, hmm
[14:45] <cuddykid> it hasn't got anything to do with this line has it? -> void getgps(TinyGPS &gps);
[14:46] <DanielRichman> um that doesn't look like it's having any effect on the program
[14:46] <DanielRichman> you're not using it anyway so I guess you can get rid of it?
[14:47] <cuddykid> ok
[14:47] <cuddykid> the only difference i can see between the working code and the none working code is the "digitalWrite (Power_out, HIGH);" at the beginning of loop
[14:49] <DanielRichman> I can't see that having an effect either. Try removing blocks of code and see when the problem goes away
[14:50] <cuddykid> ok, good idea. I'm just wondering whether it might be my wiring whether somethings shorting because i've got leads everywhere! haha
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[14:50] <DanielRichman> leads everywhere... that might be the cause of the crazy overheating
[14:51] <cuddykid> lol
[14:52] <cuddykid> can i get the pins to act as ground? Would it be set the pin to output and set to low?
[14:53] <DanielRichman> if you have an output pin set to LOW then it's connected to ground
[14:54] <cuddykid> ok, so I can use that to ground gps right?
[14:55] <DanielRichman> you want to do what?
[14:57] <cuddykid> I was just wondering whether my problem was caused because the ground of the ntx2 and gps are connected up? And then I thought to solve the problem (if it is a problem), I could use one of the pins as a seperate ground pin for the gps
[14:57] <DanielRichman> doing that would be using another IO pin as a power pin; not a good idea.
[14:57] <DanielRichman> also a ground is a ground
[14:58] <cuddykid> ok, I'm just trying to think what could be the problem with my wiring as everything seems to work fine on their own just when I put it all together, it doesn't seem to work!
[14:58] <DanielRichman> I doubt using a low output pin would be different to the arduino ground pin
[14:59] <cuddykid> ok
[15:03] <cuddykid> DanielRichman, heres a photo of the set up if its any help! http://db.tt/oYfzYd
[15:05] <DanielRichman> where are you connecting the RF GND pins?
[15:06] <cuddykid> the RF GND pins are connected to the main gnd that the rest of the ntx2 is connected to
[15:06] <DanielRichman> I don't think you're meant to do that but that won't be causing the overheating so don't think that's been solved
[15:07] <cuddykid> ok, its just temp as i've got a 1/4 wave antenna that i've made so rf gnd pins will be connected to that :)
[15:07] <DanielRichman> good
[15:07] <cuddykid> hmm, any other suggestions?! Its puzzling me!
[15:08] <DanielRichman> ok so basically cuddykid with that setup and no modifications, you can use rtty_txstring on its own
[15:09] <cuddykid> yes
[15:09] <DanielRichman> and you can use tinygps and then serial.println
[15:09] <cuddykid> yes, when not using ntx2
[15:09] <DanielRichman> define "when not using ntx2?
[15:09] <cuddykid> when not using the block for the gps.encode
[15:09] <cuddykid> i haven't tried just outputting hello world and reading gps
[15:10] <DanielRichman> so it's a programming problem?
[15:10] <cuddykid> seems to be so
[15:12] <cuddykid> right, just to confirm its a programming problem, I'm going to run the ntx2 outputting just hello world and also see if i can print the gps data into the serial port..
[15:12] <DanielRichman> ok so what happens if you use gps.encode with serial.println (and not rx_txstring) but then add a massive delay
[15:12] <DanielRichman> no cuddykid that won't work
[15:12] <cuddykid> ok!
[15:12] <cuddykid> urm
[15:13] <DanielRichman> that is a massive delay after gps.encode returns ture
[15:13] <DanielRichman> *true
[15:13] <cuddykid> i've used the gps.encode but not with a delat
[15:13] <cuddykid> *delay
[15:13] <DanielRichman> so inside the if gps encode you serial.println the data (instead of rtty_txstring) and then delay for 15 seconds?
[15:14] <cuddykid> you mean like http://pastebin.org/379765 ?
[15:14] <DanielRichman> yeah
[15:15] <cuddykid> that works
[15:15] <DanielRichman> so every ~15 seconds you get data through the serial?
[15:15] <cuddykid> i'll just check
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[15:18] <cuddykid> DanielRichman, yes that's working, every 15secs i'm getting gps data through the serial
[15:19] <DanielRichman> right.
[15:20] <DanielRichman> so pastebin the full code with the rtty bits back in
[15:21] <cuddykid> http://pastebin.org/379785 thats the one thats not working
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[15:24] <cuddykid> DanielRichman, I have to pop out, if you manage to figure out why its not working could you pm me or email me :) i'll be on later if not, thanks for all the help!
[15:24] <DanielRichman> ok sure cuddykid . One note before you go - though I doubt this causes the problem - rtty_txbyte(time); <-- this is wrong
[15:25] <cuddykid> ooer, ok, forgot to convert that!
[15:25] <cuddykid> will do so when i get back :)
[15:25] <cuddykid> bbl
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[16:33] <junderwood> ping juxta_
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[16:57] Action: fsphil slaps himself for stupid mistake -- subtracting two values the wrong way about
[17:01] <SpeedEvil> fsphil--
[17:03] <fsphil> didn't fix the problem anyway, but sure wasn't helping :)
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[22:11] <cuddykid> ping DanielRichman
[22:12] <DanielRichman> hey cuddykid
[22:12] <cuddykid> hiya :) did you manage to find the mysterious problem?!
[22:12] <DanielRichman> I'm afraid not; though I didn't spend that much time looking I'm afraid
[22:13] <DanielRichman> you have a better chance of finding it since you have the hardware with you
[22:13] <cuddykid> no worries! I'll continue to search tomorrow!
[22:13] <cuddykid> thanks anyway
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[00:00] --- Sun Jul 4 2010