highaltitude.log.20100226

[00:00] <SpeedEvil> at least on earth
[00:00] <SpeedEvil> hmm
[00:00] <SpeedEvil> neat.
[00:01] <edmoore_> the other cool app was things like mobile phones
[00:01] <SpeedEvil> yeah
[00:01] <SpeedEvil> that's got a _LONG_ way to go
[00:01] <SpeedEvil> beamforming lifts the shannon limit
[00:01] <edmoore_> so you can have cdma systems but use the spatial awareness to let several people use the same codes in a single cell
[00:01] <SpeedEvil> well - not the shannon limit
[00:01] <SpeedEvil> but it makes the noise floor plummet
[00:02] <edmoore_> exactly
[00:03] <edmoore_> shannon comes in when you want to know what you can do with a given SNR. if you can increase the SNR, so much the better
[00:03] <SpeedEvil> Especially if you assume postprocessing of weak signals using early determination of strong interfering signals, and correlating with other recievers strongly recieved signals.
[00:04] <SpeedEvil> yeah.
[00:04] <SpeedEvil> It breaks the assumptions - like 56K modems did
[00:05] <edmoore_> right, bed time for me
[00:05] <SpeedEvil> night
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[00:06] <fsphil> conversations like that make me realise just how little I know about radio :)
[00:06] <fsphil> fascinating subject though
[00:07] Action: SpeedEvil can vaguely bullshit about advanced topics.
[00:07] <SpeedEvil> I understand enough to know how much more I have to understand.
[00:08] <MikeMc68> evening
[00:10] <SpeedEvil> evening.
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[00:43] <natrium42> oy
[00:43] <juxta> hey natrium42
[00:43] <natrium42> sup juxta?
[00:43] <juxta> not a whole lot
[00:44] <juxta> just had quotes on built in robes done ;p
[00:45] Action: natrium42 was marking an exam all day :S
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[07:58] <jcoxon> morning all
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[08:24] <jcoxon> damn, seem to have missed the only radio rally that every is nearb
[08:24] <jcoxon> y
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[08:39] <MikeMc68> morning
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[09:53] <jcoxon> morning all
[09:53] <jcoxon> todays project is to make a remote listening station using my ft790r
[10:03] <juxta> I want to make a remote station with an old icom I have
[10:03] <juxta> but it doesnt have CAT
[10:04] <jcoxon> i dont have cat either
[10:04] <juxta> so I'd need to use a stpper to tune it I think
[10:04] <juxta> ahh, right - how are you going about it?
[10:04] <jcoxon> perhaps we should make a gneral system
[10:04] <jcoxon> so on the Mic you can go up and down in freq
[10:05] <juxta> ah, mine doesnt have that
[10:05] <jcoxon> so i'm going to tap those pins and add a relay or optoisolator to allow you to change freq
[10:05] <juxta> big dial only
[10:05] <jcoxon> what icom?
[10:05] <juxta> http://www.rigpix.com/icom/ic490a.htm
[10:06] <juxta> the mic has a bunch of pins, maybe it does support it, hmm
[10:06] <jcoxon> yeah
[10:06] <jcoxon> exactly
[10:06] <jcoxon> was just going to loook
[10:06] <juxta> lemme grab the manual
[10:07] <juxta> ok great, it does support it
[10:07] <juxta> even easier :)
[10:07] <jcoxon> juxta, we should make a unified system :-p
[10:08] <juxta> yeah
[10:08] <juxta> what about viewing the current freq jcoxon?
[10:08] <jcoxon> yeah thats the issue
[10:08] <jcoxon> i don't want to be invasive as such
[10:08] <juxta> I was thinking a webcam maybe ;p
[10:08] <jcoxon> yeah
[10:09] <jcoxon> maybe, maybe, maybe some image recognition...
[10:09] <jcoxon> as its going to be very regular
[10:09] <juxta> true
[10:09] <juxta> if you mount it at a fixed location relative to the radio, you could crop all but the region of interest
[10:09] <jcoxon> yeah
[10:10] <jcoxon> been playing with google goggles on my andrioid phone - that can scan text pretty quickly
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[10:10] <juxta> hmm, what about changing tuning step size?
[10:10] <juxta> mine is set on the radio itself
[10:10] <jcoxon> i suspect thats a little too advanced :-p
[10:11] <juxta> a solenoid to push the button? hehe
[10:11] <jcoxon> yeah
[10:11] <juxta> I was thinking of building an MDF frame to mount the radio in
[10:11] <juxta> holding solenoids etc
[10:14] <juxta> there are only a few buttons I usually use on that icom: 1mhz up, step size toggle and maybe gain control
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[10:17] <jcoxon> okay well i'll start by getting my radio actually tuning up and down
[10:17] <juxta> jcoxon: I'm getting my license tomorrow/sunday :)
[10:17] <jcoxon> yeah
[10:18] <jcoxon> is that a novice/foundation licence?
[10:18] <juxta> hehe yep
[10:18] <juxta> doesnt allow digital modes
[10:18] <juxta> so I'll get my standard after
[10:18] <jcoxon> what!
[10:19] <jcoxon> i am just limited by my tx power
[10:19] <jcoxon> with a foundation licence
[10:19] <juxta> but you have to do a practical test - it's best to do the foundations first to get the prac test out of the way, as you dont have to do the standard prac test if you've already done the foundations one
[10:19] <jcoxon> oh right
[10:19] <jcoxon> mwhahahaha http://code.google.com/p/ocropus/
[10:19] <juxta> jcoxon: http://www.wia.org.au/licences/foundation/about/
[10:19] <juxta> that's what I can use
[10:20] <russss> jcoxon: prepare for pain
[10:20] <russss> actually OCRopus isn't as bad as tesseracty
[10:20] <russss> -y
[10:20] <russss> but they're all a bit rubbish
[10:20] <juxta> agreed, OCR is horrible
[10:20] <juxta> I used erm
[10:20] <juxta> I forget which once
[10:20] <juxta> but I wrote a little email filter for spamassasin to catch text in images
[10:20] <juxta> viagra etc
[10:20] <jcoxon> its going to be very simple
[10:21] <russss> it'll probably be ok for your use
[10:21] <jcoxon> considering that its only 6 numbers
[10:21] <russss> I've had a somewhat long-standing project to OCR the Apollo program transcripts
[10:21] <russss> and I haven't managed to get anything better than the really crap OCRed text which is already in the PDF
[10:21] <juxta> jcoxon: I get limited on emission modes, power & comms distance
[10:21] <russss> and training is massively tedious
[10:22] <juxta> oh, maybe the distance is just what I can get with the power
[10:22] <jcoxon> juxta, yeah that'll be it
[10:22] <jcoxon> right i better get working
[10:22] <jcoxon> this is going to take a bit of work
[10:22] <juxta> but in any case, all hams here pretty much just ignore the rules and aren't too silly anyway
[10:23] <jcoxon> juxta, thats good - though you'll always find a grumpy ham unfortunately
[10:23] <juxta> haha yeah
[10:23] <jcoxon> i guess down in Aus due to the size of the country its more approriate
[10:23] <jcoxon> e.g. can use HF within the country
[10:23] <juxta> well I know a guy doing about 4 times the PEP limit on HF regularly :)
[10:23] <jcoxon> juxta, where are your family originally from?
[10:24] <juxta> France, and the UK (going back a long way)
[10:24] <jcoxon> hehe, early settlers?
[10:24] <juxta> my dad's side of the family is French, dad was born in France
[10:24] <jcoxon> oh right
[10:24] <juxta> but mum's side has been here for at least 4 generations I think
[10:24] <jcoxon> i always find it interesting to find out where people from australia are originally from
[10:25] <juxta> yeah - race & such here is a bit of a funny issue
[10:25] <jcoxon> yeah, the interest is more that its a long way to move
[10:25] <juxta> there are a lot of people who claim strong 'Aussie' heritage, when there isn't really such a thing yet
[10:25] <jcoxon> quite brave
[10:25] <juxta> yeah - our govt paid for the trip out for a lot of people
[10:26] <juxta> to boost population
[10:26] <juxta> and then there's fact that the UK pretty much just sent all the undesireables over ;)
[10:26] <jcoxon> where I live in London is a SA/Aussie hub
[10:26] <jcoxon> that was a very long time ago!
[10:26] <juxta> undesireables* even
[10:27] <jcoxon> and they got revenge by kicking our arse in all sports
[10:27] <juxta> heh - only a couple of hundred years
[10:27] <juxta> but SA was the one state that didn't get any convicts
[10:27] <juxta> (supposedly)
[10:27] <juxta> why so many Aussies where you live jcoxon?
[10:28] <MikeMc68> morning
[10:28] <jcoxon> london is on of those massive cities where people live in sort of hubs
[10:28] <juxta> we get everybody where I live - lots of UK tourists, Germans, etc - mostly young backpackers down here at the beach
[10:28] <jcoxon> one person moves and then when another person arrives in the UK they gravitate to that place
[10:29] <jcoxon> also we are well placed to work in the city or canary wharf
[10:29] <juxta> jcoxon: we have a similar situation here - due to migration influxes from different areas
[10:29] <jcoxon> (its an unofficial hub - just happens that way)
[10:29] <juxta> http://en.wikipedia.org/wiki/File:Adelaide_CoB_dots.png
[10:30] <juxta> you can see it especially with the Italian and Vietnamese populations
[10:30] <juxta> I've got to dash - off to a comedy show :)
[10:30] <jcoxon> oh this is interesting:
[10:30] <jcoxon> http://www.findaproperty.com/displaystory.aspx?edid=00&salerent=0&storyid=22726
[10:31] <jcoxon> not completely what i expected
[10:31] <jcoxon> cya juxta
[10:31] <jcoxon> actually it does make sense - we are very scandanavian here as well
[10:32] <juxta> back in a little while jcoxon, catchya
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[13:34] <m6jcx> making slow progress with this radio station
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[14:09] <m6jcx> yay arduino controlled ft790r
[14:10] <russss> heh
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[14:23] <m6jcx> well it can now change the freq up and down one bit
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[15:03] <juxta> hey jcoxon / m6jcx
[15:05] <jcoxon> hey juxta
[15:05] <juxta> radio coming along OK?
[15:06] <jcoxon> hmmm, just blew the transistor i was using to control a relay doing the freq up shift
[15:06] <jcoxon> and i don't have a suitable spare
[15:06] <juxta> damn
[15:06] <jcoxon> so its a little back to the drawing board
[15:06] <juxta> optoisolators are no go?
[15:06] <jcoxon> though i have now setup my desktop and got ubuntu + dl-fldigi installed
[15:07] <jcoxon> yeah i've got an IC of 4 - will try it out in a second
[15:16] <juxta> bed time for me
[15:16] <juxta> radio license in the morn
[15:16] <juxta> night jcoxon
[15:16] <jcoxon> cya juxta
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[15:23] Nick change: m6jcx -> jcoxon-m6jcx
[15:24] <Smithder> new here, lurking to get flavour
[15:25] <jcoxon-m6jcx> hi Smithder
[15:25] <jcoxon-m6jcx> welcome to #highaltitude
[15:26] <jcoxon-m6jcx> very welcome to lurck :-)
[15:27] <Smithder> hi James, just been reading your sites covering the recent flights
[15:28] <jcoxon-m6jcx> ooo cool
[15:31] <Smithder> re your failure of the GPS, do you know that some are restricted to height and velocity to prevent use in missile attacks?
[15:31] <Smithder> Some are not restricted
[15:31] <jcoxon-m6jcx> oh yes, the gps used is well known to work
[15:32] <jcoxon-m6jcx> also we were pretty low when it stopped working and our velocity was ~2m/s
[15:32] <Smithder> So it was the motor running for sure that bummed it?
[15:32] <jcoxon-m6jcx> won't know until the payload gets back
[15:32] <jcoxon-m6jcx> but the gps stopped working as soon as the pump was turned on
[15:33] <Randomskk> and started up again when the pump ran out of batteries?
[15:33] <Smithder> rfi from the motor brushes perhaps?
[15:34] <jcoxon-m6jcx> yeah i suspect so - unfortuantely i didn't really test them together - even though i did extensive testing - but to simulate the situtation that the pump would be turned on I used fake gps
[15:34] <jcoxon-m6jcx> a mistake i won't repeat
[15:34] <Randomskk> also having code that can't turn off pump without a gps lock :P
[15:35] <jcoxon-m6jcx> hehe, its easy to pick holes in it now :-p
[15:35] <Randomskk> isn't hindsight great
[15:35] <jcoxon-m6jcx> yup
[15:35] <Randomskk> still, it got recovered
[15:35] <russss> need a GPS satellite simulator ;)
[15:35] <jcoxon-m6jcx> hehe
[15:35] <Randomskk> hehe
[15:35] <Randomskk> they can be done
[15:35] <Randomskk> someone used that as a concept to trick vehicle GPS systems
[15:36] <russss> yeah
[15:40] <Smithder> Why did the pump motor need a gps fix to stop? could the pump be driven for a fixed time dictated by the rate of descent? if still falling shot again and nudge the factors so they learn aas it goes?
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[15:40] <Lunar_Lander> hello
[15:41] <Smithder> Isn't that a bit higher than 30km ?
[15:41] <jcoxon-m6jcx> Smithder, it was more of an oversight then a decision - just that lots of the functions occured in the gp lock section of the code
[15:42] <jcoxon-m6jcx> and because i was testing scenarios with fake gps I of course had a lock
[15:46] <Smithder> Do you have any means of knowing if you are falling through the air or in a 'downdraft'?
[15:47] <jcoxon-m6jcx> averaging really
[15:48] <Smithder> Sorry, don't understand... averaging what ?
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[15:48] <jcoxon-m6jcx> well you average your ascent rate over a couple of minutes
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[15:50] <Smithder> How does that tell you if you are floating up or eing carried up on an updraft?
[15:50] <Smithder> Sorry, sticking 'b' key - reaad 'being'
[15:52] <jcoxon-m6jcx> well the updraft won't last that long i guess
[15:53] <jcoxon-m6jcx> the ballast isn't really for that situation
[15:54] <Smithder> only to maintain alt at night...
[15:54] <jcoxon-m6jcx> yeah, well the current flights are just to prove that actuallly the pump works
[15:55] <SpeedEvil> And to catch stupid classes of errors like what happens when hte GPS loses lock
[15:55] <jcoxon-m6jcx> for a trans-atlantic flight it'll be a combination of pre-emptive ballast drops and then a sort of feedback mechansim related to negative ascent rates
[15:56] <jcoxon-m6jcx> SpeedEvil, :-)
[16:01] <Smithder> are you planning to use He dumps to lock into the JS ?
[16:01] <jcoxon-m6jcx> Smithder, http://spacenear.us/wiki/doku.php?id=flightcomputer:code
[16:05] <jcoxon-m6jcx> Smithder, the zero pressure balloon will do that naturally
[16:07] <Lunar_Lander> hi jcoxon-m6jcx
[16:08] <jcoxon> hey Lunar_Lander
[16:15] <Lunar_Lander> how are you?
[16:17] <jcoxon> good thanks, got the day off which is nice
[16:18] <jcoxon> how are you ?
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[16:23] <Smithder> @jcoxon -- the zero pressure balloon will do that naturally -- if you size the balloon correctly so that it tops out at 11k - how do you calc that ?
[16:24] <Lunar_Lander> I'm fine too
[16:26] <Smithder> flightcomputer : code is very interesting. does the system GPS give altitude ? if so can the alt be used to determine actual descent instead of using more sensors to determine that solar heating has stopped ?
[16:28] <jcoxon> Smithder, yeah the gps gives altitude
[16:28] <Smithder> dog needs a walk - back in a while
[16:28] <jcoxon> np
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[16:32] <edmoore> afternoon all
[16:32] <jcoxon> hey edmoore
[16:43] <edmoore> jcoxon: have you had a play with cocoaNEC2?
[16:44] <edmoore> from the guy who made cocoamodem
[16:44] <edmoore> it's brilliant
[16:44] <edmoore> the tutorial takes you ten minutes tops and you end up simulating a 2 element yagi
[16:44] <jcoxon-m6jcx> ooo cool, never used his cocoaNEC2
[16:45] <jcoxon-m6jcx> cocoamodem is a really nice bit of code
[16:45] <edmoore> will be supremely helpful
[16:45] <edmoore> especially if my friend and i try and make a superresolution direction finding rig as per the talk yesterday
[16:45] <edmoore> that way would could have actually got sub-degree accuracy bearings to BH4
[16:45] <jcoxon-m6jcx> hehe
[16:46] <jcoxon-m6jcx> hopefully next flight we'll know where it is :-p
[16:46] <edmoore> :)
[16:46] <edmoore> i'd just put two gps rtty beacons on it
[16:46] <edmoore> saved us on sat
[16:46] <edmoore> although the one that crapped up was sort of known to be a bit crap
[16:46] <jcoxon-m6jcx> i've been rebuilding my ft790r computer interface
[16:48] <jcoxon-m6jcx> got an arduino controlling up/down freq
[16:49] <jcoxon-m6jcx> now sorting out the webcam to read the current freq - going to feed the image into OCR :-)
[16:50] <edmoore> haha wow
[16:50] <edmoore> that is pretty cool
[16:50] <jcoxon-m6jcx> will see if actually works1
[16:51] <SpeedEvil> edmoore: what do you need - ideally - for the superresonant thing?
[16:51] <edmoore> 1. an array
[16:51] <SpeedEvil> edmoore: a common clock leading to multiple mixers, and IFs?
[16:51] <edmoore> 2. some receivers with uniform clock
[16:51] <SpeedEvil> or directly downconverted to adc
[16:51] <edmoore> 3. an algorithm
[16:52] <SpeedEvil> 4. underpants?
[16:52] <edmoore> nope
[16:52] <edmoore> 5. an awesome gui showing the az and el of all the received signals on a polar plot
[16:52] <edmoore> and several software decoders so you can clock on regions of the plot to decode
[16:52] <SpeedEvil> Surely you need a visual basic GUI to find their true location.
[16:53] <edmoore> so we could launch a whole bunch of balloons on 434.650 and decode them specially
[16:53] <SpeedEvil> neat.
[16:53] <edmoore> ah yeah, see if i can track them down with a visual basic gui
[16:53] <edmoore> i think they have an IP....
[16:54] <SpeedEvil> this is basically interferometry
[16:54] <SpeedEvil> your spurs go down as the number of nodes goes up?
[16:54] <SpeedEvil> (assuming properly placed ants)
[16:55] <edmoore> hrm...
[16:56] <edmoore> one of the areas on research is into antenna placement to minimise the number of spurs and nulls, or what have you
[16:56] <edmoore> you really want a very uniform and characterisable array manifold, as the algorith relies on having knowledge of that manifold
[16:56] <SpeedEvil> sounds exactly the problems interferometry has.
[16:56] <SpeedEvil> probably a lot of the solutions apply
[16:56] <edmoore> so the guy who gave the talk has a paper on simulated annealing optimisation techniques for array design
[16:57] Action: SpeedEvil wonders if you can back-calculate from arbitrary random placement of elements.
[16:57] <SpeedEvil> to their positions
[16:58] <edmoore> it's a bit analogous to sparse sampling techniques like that, yes
[16:58] <edmoore> but then another consideration, and it's a really big one, if mutual coupling between nodes
[16:58] <SpeedEvil> say plop a dozen antennas randomly on a car roof
[16:58] <SpeedEvil> hmm
[16:58] <edmoore> he was strongly advocating non-resonant antennas
[16:58] <edmoore> yes, the car roof is the usage scenario we've been talking about too
[16:59] <edmoore> a pair of those and you really could accurately locate a balloon
[16:59] <edmoore> or....... a rockoon
[16:59] <edmoore> (now you see why we're interested!)
[16:59] <SpeedEvil> yeah
[16:59] <SpeedEvil> Assuming ionspheric models
[16:59] <edmoore> i think with LoS on it you could probably ignore the ionosphere and still get good enough accuracy
[17:00] <edmoore> think = hope
[17:00] <edmoore> right, time for me to be off
[17:00] <SpeedEvil> the same idea works for gps
[17:00] <SpeedEvil> for orientation
[17:00] <SpeedEvil> wave
[17:01] <edmoore> yes - seeing gps sats go over would be fun
[17:01] <Lunar_Lander> yay
[17:01] <edmoore> ?
[17:04] <jcoxon-m6jcx> bbiab
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[17:30] <martinsweeney> evening
[17:31] <martinsweeney> anyone know a clever way to find out the baud rate a GPS is outputting serial data at?
[17:32] <Randomskk> logic analyser
[17:32] <Randomskk> doesn't really count as clever
[17:32] <Randomskk> it's quite likely to be 4800
[17:32] <Randomskk> failing that, 9600
[17:33] <Randomskk> failing that, 57600, and after that 115200
[17:33] <Randomskk> and probably 8n1
[17:33] <martinsweeney> any reason for these?
[17:33] <Randomskk> I think once upon a time they led to convenient waveform periods that could be easily derived from commonly used crystal frequencies
[17:34] <Randomskk> but basically those are just the common serial frequencies, and 4800 is very common for NMEA GPS units
[17:34] <Randomskk> 9600 is a bit unlikely, 57600 is quite likely for a high update rate GPS
[17:34] <Randomskk> 115200 is also a bit unlikely
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[17:39] <jcoxon> generally they are 4800
[17:39] <jcoxon> ubloxes rare 9600
[17:41] <jcoxon> ubloxes are usually 9600 ****
[17:42] <jcoxon> need to pay attention to my typing
[17:42] <martinsweeney> I bought an obscure little one off ebay, a globaltop G66, that's meant for phone-bluetooth pairing
[17:42] <martinsweeney> pleasingly, there are TX, GND pads on the PCB
[17:43] <martinsweeney> my arduino skills are 3 years rusty tho, so I think thats the major problem
[17:43] <Randomskk> probably 4800
[17:43] <Randomskk> but just try them all
[17:43] <Randomskk> :P
[17:44] <martinsweeney> I just get random characters at 4800
[17:45] <jcoxon> i hate webcams
[17:45] <Randomskk> jcoxon: it doesn't have any kind of remote control mode?
[17:45] <russss> martinsweeney: it might be set up to talk binary protocol instead of NMEA
[17:46] <russss> although if it's bluetooth that would be unlikely I guess.
[17:46] <martinsweeney> I saw a tutorial for a very similar, albeit not the same module, model which used NMEA
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[17:47] <jcoxon> hmmm its going to be a mediatek gps
[17:48] <jcoxon> martinsweeney, try 9600
[17:48] <jcoxon> martinsweeney, if you can read the chipset of the gps we can find hte datasheet
[17:49] <martinsweeney> how would I read the chipset? There's a metal case on the receiver
[17:49] <jcoxon> any writing anywhere on the pcb?
[17:50] <martinsweeney> it says 9602-BTGPS Card (MTK) V03 2007/07
[17:50] <martinsweeney> and yes, I tried 9602
[17:50] <jcoxon> hehe
[17:51] <martinsweeney> however, I'm using a really simple serial program on the arduino
[17:51] <jcoxon> yeah i reckon 9600
[17:51] <martinsweeney> and im not sure if Serial.begin(9600) sets the Tx or Tx baud
[17:51] <jcoxon> yeah thats okay
[17:53] <martinsweeney> and when I print, reckon I should use the type DEC or BYTE?
[17:54] <martinsweeney> so, incomingByte = Serial.read(); then Serial.print(incomingByte, BYTE);
[17:54] <russss> fairly sure it's byte
[17:54] <jcoxon> neither
[17:54] <Randomskk> just print it
[17:54] <Randomskk> Serial.print(Serial.read());
[17:56] <martinsweeney> ok, so good so far
[17:56] <russss> I think BYTE is the default anyhow.
[17:56] <martinsweeney> at 9600 I see a stream of numbers
[17:56] <martinsweeney> but not ascii
[17:56] <Randomskk> no letters at all?
[17:56] <Randomskk> but all numbers?
[17:56] <martinsweeney> just numbers
[17:56] <Randomskk> sure you're not having the arduino print the numerical byte value?
[17:56] <martinsweeney> 415225014913629337764421624411839574213715
[17:56] <Randomskk> sounds like you are
[17:57] <martinsweeney> Serial.print(Serial.read());
[17:57] <Randomskk> hmmm
[17:57] <Randomskk> just short tx and rx pins :P
[17:58] <martinsweeney> how/why?
[17:58] <Randomskk> so all the serial from the gps goes straight to the computer
[17:58] <russss> you *do* want Serial.print(Serial.read(), BYTE); I think
[17:58] <martinsweeney> I just tried that
[17:58] <russss> because Serial.print(<int>) prints the integer as a literal value
[17:59] <Randomskk> that could be an issue
[18:01] <martinsweeney> adding , BYTE gives me junk again
[18:02] <martinsweeney> ¢™Ù" etc
[18:04] <martinsweeney> trying 9602 again gave a much more regular stream of junk characters
[18:04] <martinsweeney> øøøøøø etc
[18:06] <russss> heh
[18:06] <russss> well that's probably just an artefact of the baud rate rather than anything meaningful.
[18:06] <martinsweeney> ah no, I had a mismatch between my serial monitor baud rate and the printing baud speed
[18:07] <martinsweeney> am I correct in setting the serial monitor baud to what I'm reading at, or no?
[18:07] <russss> yes
[18:07] <russss> err
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[19:19] Nick change: sbasuita_ -> sbasuita
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[19:34] <Jasperw> maybe you need to look at stop bits?
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[20:17] <Futurity> Evening All
[20:17] <Futurity> any more launches planned?
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[21:07] <rjharrison> boo
[21:07] <rjharrison> whos awake
[21:07] <Randomskk> hi
[21:07] <rjharrison> hi Randomskk
[21:07] <rjharrison> were there any pics from the last launch?
[21:07] <Randomskk> I haven't seen any, and certainly it wasn't carrying a camera
[21:08] <rjharrison> Oh ok
[21:08] <Randomskk> it was just badger2+badgercub
[21:08] <rjharrison> cool
[21:08] <Randomskk> and the very dodgy GPS :P
[21:08] <rjharrison> Yep dodgy antenan apparently
[21:09] <Randomskk> mmhmm
[21:18] <Lunar_Lander> hi RocketBoy and rjharrison
[21:21] <rjharrison> Hi Lunar_Lander how goes it
[21:23] <Lunar_Lander> I'm fine and you?
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[21:41] <natrium42> oy!
[21:42] <Lunar_Lander> hi natrium42
[21:44] <natrium42> moin Lunar_Lander
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[21:50] <rjharrison> Evening juxta
[21:52] <juxta> hey Rob
[21:52] <Lunar_Lander> does Totex belong to Mitsubishi?
[21:54] <rjharrison> boo
[21:54] <rjharrison> Lunar_Lander no idea
[21:54] <Lunar_Lander> because Mitsubishi does almost everything in Japan
[21:55] <natrium42> yo rob
[21:55] <natrium42> how is icarus III?
[21:55] <rjharrison> Totex originally made balloons to bomb the US in WW2
[21:56] <rjharrison> natrium42 under construction
[21:56] <rjharrison> :)
[21:56] <natrium42> pics or it didn't happen!
[21:56] <natrium42> are you going to let laurence hitch-hike?
[21:56] <natrium42> i am interested in his radio transmitter performance
[21:57] <Lunar_Lander> btw
[21:57] <Lunar_Lander> these 433 MHz modules
[21:57] <Lunar_Lander> I always find them with "range: 1000 m"
[21:58] <natrium42> that's assuming their crappy receivers
[21:58] <Randomskk> range is really very dependent on things like line of sight, receiver antenna and receiver radio
[21:58] <natrium42> ham receivers are much more sensitive
[21:58] <Randomskk> if you used another NTX2 to pick up the first NTX2 you'd be pretty stuffed
[21:58] Action: natrium42 slaps Randomskk with a RTX2
[21:58] <Randomskk> lol
[21:58] <Randomskk> s/N/R/
[21:58] <rjharrison> natrium42 http://www.flickr.com/photos/30721501@N05/sets/72157623381355509/
[21:59] <natrium42> oooh, hawt
[22:01] <Lunar_Lander> ah ok
[22:02] <juxta> good idea to remove the grease
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[22:03] <natrium42> hi F4EIR
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[22:03] <natrium42> juxta_, so did you pass?
[22:03] <F4EIR> hello
[22:03] <MikeMc68> evening
[22:03] <juxta> natrium42: it's 8:30am
[22:04] <juxta> I'm about to head off
[22:04] <natrium42> aah
[22:04] <juxta> ;)
[22:04] <natrium42> good luck
[22:04] <juxta> cheers - the exam is tomorrow I think
[22:04] <natrium42> if you can choose callsign: JUX74
[22:04] <juxta> it's a weekend thing
[22:04] <juxta> heh, I can choose, but it has to stat with VK5F
[22:04] <natrium42> pfft
[22:05] <natrium42> then VK5F1337
[22:05] <juxta> then when I get off my foundation license it can just start with VK5
[22:05] <MikeMc68> evening
[22:05] <natrium42> evening mike
[22:05] <juxta> i better head off, cya later
[22:05] <MikeMc68> any launches this weekend ?
[22:06] <Lunar_Lander> afaik not
[22:06] <natrium42> maybe rjharrison? :)
[22:06] <MikeMc68> we need to aim for one launch every weekend
[22:06] <Lunar_Lander> do you guys know the StratoCat btw?
[22:06] <natrium42> there's a few in the US --> http://www.arhab.org/ARHABlaunchannouncements.html
[22:06] <MikeMc68> ?
[22:07] <Lunar_Lander> www.stratocat.com.ar/indexe.html
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[22:08] <MikeMc68> cool
[22:08] <Lunar_Lander> yeah
[22:09] <Lunar_Lander> it's all managed by one single argentinian guy who's also fascinated by HAB :)
[22:09] <Lunar_Lander> in the previous version, he had another chart of the launches
[22:10] <Lunar_Lander> with a globe symbol if a map of the track was available
[22:10] <Lunar_Lander> an "Info" button if there was more text
[22:10] <Lunar_Lander> and a UFO symbol if that balloon flight caused UFO reports :P
[22:10] <MikeMc68> lol
[22:11] <Lunar_Lander> there is famous Holloman Flight No. 135
[22:11] <Lunar_Lander> that was the UFO above England in the 50's
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[23:17] <Randomskk> SpeedEvil: there are notes from the superresolution DF CUWS lecture last night
[23:17] <Randomskk> some of the hardware looks fun
[23:19] <Randomskk> SpeedEvil: https://randomskk.net/u/100225_HF_DF_Cambridge.pdf if you're interested
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[00:00] --- Sat Feb 27 2010