highaltitude.log.20140215

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[01:34] <OZ1SKY_Brian> how cool is that http://amsat-uk.org/2014/02/13/cnn-report-amateurs-receiving-lunar-radio-signals/ :-)
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[01:38] <OZ1SKY_Brian> evening Geoff
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[06:55] <Reb-SM3ULC> SP3, the bouncer
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[07:55] <eroomde> morn
[07:55] <eroomde> still here, still not underwater
[07:56] <Upu> this is good news
[08:00] <SpeedEvil> Unless he lives in a pineapple.
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[08:25] <jcoxon> morning all
[08:25] <Upu> morning
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[08:25] <jcoxon> Upu, i was thinking whether we should offer a second place for the Arctic challenge
[08:26] <Upu> hehe
[08:26] <jcoxon> as LeoBodnar smashed it rather well
[08:26] <Upu> well just by sheer numbers of launches the odds were in leo's favour
[08:28] <jcoxon> still
[08:28] <jcoxon> that must be the furthest north an amateur balloon has ever got
[08:30] <Upu> that we know about
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[09:18] <DL1SGP1> good morning :)
[09:18] Nick change: DL1SGP1 -> DL1SGP
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[10:02] <edusupport> Hi is there a guide anywhere on submitting a NOTAM
[10:04] <fsphil> which country?
[10:04] <edusupport> uk
[10:04] <fsphil> http://ukhas.org.uk/guides:faq
[10:05] <fsphil> there's a link to the form there, and some info about it
[10:05] <edusupport> Must be blind :)
[10:05] <edusupport> Thanks
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[10:09] <edusupport> What is the procedure if we are directly under an airport approach path would we be requested to move the launch site
[10:10] <fsphil> it's very unlikely you'd get permission to launch somewhere under a lot of aircraft traffic
[10:10] <fsphil> or there would be strict limits placed on where the payload can go
[10:11] <edusupport> how do you mean where it can go
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[10:12] <fsphil> where the payload travels after you release it
[10:12] <edusupport> Oh i see
[10:12] <DL1SGP1> you would possibly get a permission bound to certain wind conditions which need to be met in order to be allowed to launch
[10:12] <fsphil> to avoid hassle it might be easier to move the launch site :)
[10:12] <DL1SGP1> yeah much easier :)
[10:14] <edusupport> I would have to take a class of 32 with me which is also quite difficult the launch site is a school under the approach to birmingham airport i assumed there may be problems
[10:16] <DL1SGP1> well personally I think you would have less issues in organising a bus to get the kids to a launch site from where a launch can happen relatively hazzle free compared to planning the launch event and 5 minutes before the launch wind changes and turns your permission to launch into a NO-GO producing 32 frustrate kids that were standing in the rainy british weather to see the balloon getting inflated :)
[10:17] <fsphil> Rob_m0dts: http://predict.habhub.org/#!/uuid=5aefd09fb1a92d7379e727fd0b3f242afc30390e :)
[10:19] <mfa298> I think there's been a few people asking about launching from the birmingham area in the past and in general they've gone south a bit to launch.
[10:19] <mfa298> I think there's been a few launches from worcester
[10:19] <mfa298> or that sort of area
[10:20] <mikestir> edusupport: I worked with a local school on a launch back in october. they were under the approach to liverpool airport and it was a no-go
[10:20] <mikestir> launched from welshpool in the end to get well away from both liverpool and manchester approaches, although I suspect we could have got nearer than that
[10:22] <mikestir> fsphil: are you launching that pico today?
[10:22] <edusupport> Sounds like moving the site is the best idea how would I find out where the nearest "safe" area would be, would the CAA advise I can see another risk assessment coming up
[10:23] <fsphil> hoping to tomorrow mikestir
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[10:24] <mfa298> edusupport: http://www.flightradar24.com/ might give an idea of where flight paths go which could help
[10:25] <mfa298> also look through the launch announcments list might give an idea of where people have launched from
[10:25] <mikestir> there are caa maps, but they are a bit cryptic
[10:25] <edusupport> wow airspace is busy
[10:26] <mfa298> you may also want to consider what roads are available for chasing (assuming you want to try and recover the payload)
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[10:30] <Rob_m0dts> fsphil looks god to me! was not aware you were launching, i logged in by chance!
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[10:30] <fsphil> I've been meaning to launch this for a while now, keeps getting delayed
[10:31] <Rob_m0dts> right i'd better get out and point my yagi back to the horizon, it's currently pointing at the ground from 30ft up due to wind!
[10:31] <SIbot> In real units: 30 ft = 9.14 m
[10:32] <ibanezmatt13> My quadcopter is coming on nice in Solidworks: http://pasteboard.co/Hj4rUl0.png So glad I bought it
[10:33] <fsphil> oh you'll be able to decode this one on some wet string
[10:33] <fsphil> it's a slow data mode
[10:33] <fsphil> no images sadly
[10:34] <jcoxon> fsphil, pico or latex?
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[10:34] <fsphil> 100g latex
[10:35] <fsphil> pico latex? :)
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[10:35] <fsphil> hoping it floats
[10:35] <edusupport> ibanezmatt13> cool are you actually going to build it
[10:35] <ibanezmatt13> nah probably not, just playing around getting used to the software
[10:35] <ibanezmatt13> in readiness for bulding my rocket :P Which I will build
[10:36] <edusupport> I see :)
[10:36] <edusupport> Looks good though
[10:36] <ibanezmatt13> thanks!
[10:37] Action: ibanezmatt13 is about to disassemble a 2 stroke model plane engine despite knowing anything about engines, should be fun
[10:38] <edusupport> What is it type
[10:38] <edusupport> make sorry
[10:38] <ibanezmatt13> made in 1954, an ED 1.49CC
[10:38] <edusupport> Noooooo
[10:39] <ibanezmatt13> yup
[10:40] <jcoxon> ibanezmatt13, don't break it!
[10:40] <edusupport> Definatly not
[10:41] <ibanezmatt13> don't worry, I won't! Just investigating how they work to help my dire engineering skills
[10:41] <ibanezmatt13> I hope it still works. I'd love to see a model airplane engine working :)
[10:43] <ibanezmatt13> I took the cylinder head off, saw the piston, then reassembled in fear of breaking anything
[10:44] <edusupport> Is there 3 screws
[10:44] <ibanezmatt13> yep
[10:45] <edusupport> just lift the barrel off and unscrew the backplate thats in there are no piston rings to worry about all thats inside is the piston and rod
[10:46] <edusupport> all plain bearings
[10:47] <edusupport> and really simple to re-assemble
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[10:47] <ibanezmatt13> yeah I took the barrel off. My Dad last night helped me take what looks like some sort of carburreter (however you spell it) off where the air comes in.
[10:48] <edusupport> at the back
[10:48] <ibanezmatt13> yeah
[10:50] <edusupport> is yours blue
[10:50] <ibanezmatt13> no, I'll get a pic one sec
[10:51] <ibanezmatt13> http://1drv.ms/M1XBBH
[10:52] <edusupport> Its a boat engine
[10:52] <edusupport> water cooled
[10:52] <ibanezmatt13> yeah, I remember someone saying that yesterday
[10:53] <ibanezmatt13> Water cooled... how does that work? There are slots in the side surely water can't get in there
[10:53] <ibanezmatt13> unless something should be in the slots
[10:53] <edusupport> the big slot is the exhaust port
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[10:54] <ibanezmatt13> So water getting in there wouldn't stop it working... mm
[10:54] <edusupport> the silver bit with the pipe in it surrounds the barrel
[10:55] <ibanezmatt13> oh, so water flows through the small tubes on each side of the barrel
[10:55] <edusupport> the water goes into the small pipe and out the other side
[10:55] <ibanezmatt13> I wondered what that was for. I thought it was for mounting :P
[10:56] <edusupport> it should run you need model diesel fuel
[10:56] <ibanezmatt13> yeah. You know where the fuel goes in?
[10:56] <ibanezmatt13> the black bit on the left
[10:56] <edusupport> the small brass tube under the mixture needle
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[10:57] <ibanezmatt13> cool, thought so
[10:58] <ibanezmatt13> So if this is a boat engine and the big slots on either side are exhaust ports, surely if water got into those exhaust slots it would cut out the engine
[10:58] <edusupport> yes then as it is a compression ignition engine you have to set the compression with the t shaped screw on thw top
[10:58] <edusupport> It would
[10:58] <ibanezmatt13> yeah I can feel it get harder to rotate as I decrease the volume for the compression in the barrel.
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[10:59] <edusupport> There is usually a silencer attached when its in use
[11:00] <craag> It'll be a bit loud without one I bet :P
[11:00] <edusupport> lovley smell
[11:00] <ibanezmatt13> ah right, I bet I couldn'y find one anyway for this engine it's so old :)
[11:00] <craag> Awesome looking engine, loving the tiny simplicity of it.
[11:00] <edusupport> you dont need it
[11:01] <ibanezmatt13> Me too craag, never seen one before :P
[11:01] <craag> I've always wanted to have a go with them, my dad used to fly them in south london.
[11:01] <craag> Audio-tracked :P
[11:02] <ibanezmatt13> Yeah, I think I'd just like to secure it and fire it up but not sure how to secure it. Jed are there any safe techniques for mounting it so it doesn't kill me?
[11:02] <edusupport> strip it make sure its not gummed up inside the lubrication they use is castor oil in the fuel
[11:02] <craag> Basic radio control of surfaces, but no control of the engine, so it flew til the fuel ran out.
[11:02] <ibanezmatt13> My Granddad cleaned it with petrol for me yesterday and got rid of a load of stuff insidfe
[11:03] <ibanezmatt13> I reckon with a few servos or something it'd be possible to write some ECU software for it :P
[11:03] <edusupport> go and buy a n engine mount from a model shop for a couple of quid they come in all sizes
[11:03] <edusupport> lol
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[11:04] <ibanezmatt13> yeah I think there's one down the road from here
[11:04] <edusupport> then mount it to a solid surface and watch your fingers
[11:05] <chrisstubbs> Impressed my antenna has survived this wind
[11:05] <ibanezmatt13> hey chris :)
[11:05] <ibanezmatt13> yeah that would probably hurt :/ So to start to put it to max compression and give the prop a push?
[11:06] <edusupport> make sure the carb is clean take the needle out and check have fun
[11:06] <ibanezmatt13> needle
[11:06] <ibanezmatt13> ?
[11:06] <edusupport> no back it off and wind it on untill it fires
[11:06] <ibanezmatt13> ah right, so it doesn't break the piston under too much comp
[11:07] <edusupport> the knurled brass bit it unscrews
[11:07] <ibanezmatt13> oh yes so it does
[11:08] <edusupport> thats what sets the fuel mixture screw it right in then unscrew 2.5 turns start from there and adjust as needed
[11:09] <ibanezmatt13> cool, thanks
[11:09] <edusupport> nps
[11:11] <ibanezmatt13> That would be a challenge, modelling this engine in solidworks
[11:13] <edusupport> you see that small bar above the black bit ive just noticed it
[11:14] <ibanezmatt13> bar?
[11:14] <edusupport> below the screw it moves
[11:14] <ibanezmatt13> on the carb?
[11:14] <edusupport> yes
[11:14] <ibanezmatt13> ah yes
[11:14] <ibanezmatt13> is that like a lock?
[11:15] <ibanezmatt13> ooh, it spins the thing inside, the hole for the air
[11:15] <edusupport> thats a crude throttle where the servo goes more like an on off
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[11:16] <ibanezmatt13> right
[11:16] <edusupport> it shuts off the fuel supply
[11:17] <ibanezmatt13> oh right, makes sense. Looked like it just restricted the air flow but then again I can't see what it's doing to the fuel inlet
[11:20] <edusupport> If you manage to get it set up correctly it regulates the speed quite nicely but its a pain on a small diesel
[11:20] <ibanezmatt13> right, I'll probably get down to the hobby shop and get some stuff for it sometime this week. I guess they'll sell the model diesel too
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[11:25] <ibanezmatt13> oh yea! http://pbrd.co/1eZF71G
[11:28] <tweetBot> @NORB_HAB: Getting used to @SolidWorks now :D
[11:28] <tweetBot> #quadcopter #ukhas http://t.co/4jz7vVTG8m
[11:36] <Willdude123> I had an idea for my CS program
[11:36] <Willdude123> Fibonacci in scratch
[11:36] <Willdude123> Dead easy, but probably lots of code and very expandable
[11:54] <LeoBodnar> jcoxon I concur
[11:55] <jcoxon> hehe
[11:55] <jcoxon> awesome work
[11:55] <jcoxon> i need to find you a trophy now
[11:55] <jcoxon> and pay up :-p
[11:56] <LeoBodnar> ta, it's the wind, not me
[11:56] <LeoBodnar> lol it was an investment that worked
[11:57] <LeoBodnar> should we donate to good causes?
[11:58] <LeoBodnar> preferably associated with covering the planet with styrofoam and spent batteries
[11:58] <jcoxon> hehe
[11:59] <jcoxon> i'm trying to remember how much i planned to contribute!
[12:00] <LeoBodnar> lol me too :D
[12:00] <LeoBodnar> it's between you and me now haha
[12:00] <jcoxon> steve was going to add some as well
[12:00] <jcoxon> i should attempt 2nd place and then this cost us nothing...
[12:01] <LeoBodnar> heh poor Steve
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[12:10] <Willdude123> I think we should donate it to the Jamaican Bobsled team
[12:13] <LeoBodnar> maybe Eddie The Eagle
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[12:18] <Willdude123> Maybe we should let every UKHAS member dissipate a portion of the money :)
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[12:31] <jcoxon> unusual flight path for sp3osj
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[13:06] <Geoff-G8DHE> Time to update the Arctic Challenge page I reckon! http://ukhas.org.uk/ukhas:arctic_challenge
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[13:07] <Geoff-G8DHE> Time to update the Arctic Challenge page I reckon! http://ukhas.org.uk/ukhas:arctic_challenge
[13:08] <Willdude123> Time to update the Arctic Challenge page I reckon! http://ukhas.org.uk/ukhas:arctic_challenge
[13:10] <Willdude123> :P
[13:11] <craag> So time for the equator challenge?
[13:12] <Willdude123> Anyone here half-decent with game programming? Trying to emulate pong and failing on one bit
[13:13] <Geoff-G8DHE> I thought programming was a game ? You against the language designers!
[13:13] <mfa298> Geoff-G8DHE: lol
[13:14] <mfa298> for simple games there shouldn't be much difference between game programming and any other programming, thing about what you're trying to acheive, break it down into suitable blocks, convert that into code.
[13:14] <Willdude123> So basically, I'm making pong with scratch
[13:17] <daveake> Programming is a masochistic activity. You type up your shiny new code to be told in no uncertain terms by the compiler that you f**ked up 27 times
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[13:18] <gonzo__> if you didn;t get silly errors on first compile, you would be worried
[13:18] <daveake> And once past that hurdle, you see the gulf between what you thought it would do and what reality thinks
[13:18] <daveake> true
[13:18] <daveake> It is strange when that happens
[13:18] <gonzo__> it's suspicious
[13:18] <gonzo__> nope, it's unnatural
[13:18] <daveake> I remember once having a go at Algol
[13:18] <daveake> 100 lines of code 105 errors
[13:19] <daveake> I gave up
[13:19] <daveake> I probably missed a bracket somewhere near the top
[13:24] <mfa298> daveake: that sounds like a good compiler, most of the time they seem to like only telling you about one error at a time.
[13:25] <daveake> Yeah, they enjoy prolonging the pain ... :/
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[13:38] <Willdude123> I never considered it masochistic. I've never been aroused by a program
[13:38] <Willdude123> http://scratch.mit.edu/projects/17867574/#editor
[13:39] <Willdude123> I need to get the ball to move in accordance with where it hit the bat
[13:44] <bertrik> the really creepy thing is when you type in a lot of new code and it compiles without error, makes you wonder whether you compiled the right thing or edited the right file
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[13:50] Action: cm13g09 sets off for Southampton
[13:50] <cm13g09> mfa298: what's it like down there?
[13:51] <Willdude123> cm13g09, I bet you say that to all the boys
[13:51] <mfa298> there appears to be some sunshine currently
[13:51] <mfa298> was very windy last night
[13:52] <cm13g09> yes, so I see from people's photos of the Avenue this morning....
[13:52] <gonzo__> dmesg
[13:52] <gonzo__> bum!
[13:52] <cm13g09> gonzo__: this is not a shell
[13:52] <cm13g09> (or maybe command not found!)
[13:53] <gonzo__> would have been worse if it had stared 'su' !
[13:55] <LeoBodnar> sudo tea
[13:56] <craag> sudo chown -R :us base*
[13:57] <Willdude123> sudo man up
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[14:05] <mfa298> craag: good one
[14:05] Action: mfa298 wonders how many recognise the meme
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[14:55] <Maxell> mfa298: all of your base are belong to us? :)
[14:55] <Maxell> all due recusive
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[15:17] <mfa298> Maxell: that's what I was assuming
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[15:19] <Maxell> \o/
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[15:26] <LeoBodnar> lol craag just noticed what you've done there
[15:28] <LeoBodnar> Maxell: I think the original was "all your base are belong to us" which so cute
[15:29] <Vostok> all your face
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[15:33] <Geoff-G8DHE> Object Movie of the B-40 flight - added it to the Arctic Challenge page as well ;-)
[15:33] <Geoff-G8DHE> http://360.g8dhe.net/HAB_Flights/2014_Flights/B-40_20140213/index.php?ind=1
[15:33] <craag> LeoBodnar: ;)
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[15:36] <LeoBodnar> cool Geoff, the Earth curvature on this one is not courtesy of GoPro
[15:37] <Geoff-G8DHE> Very true!
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[15:46] <LeoBodnar> I have added your link to B-40 page
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[15:49] <adwiens_KC0WYS> Leo: I like how some stations heard B-40 in November 2013 :P
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[15:49] <adwiens_KC0WYS> Not only did it win the Arctic challenge, it was also the first hab to time travel
[15:50] <LeoBodnar> lol I have reused the callsign, will clean up thanks for that bug report adwiens_KC0WYS !
[15:50] <jcoxon> hehe
[15:51] <jcoxon> adwiens_KC0WYS, when are you launch next, its about time!
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[15:51] <LeoBodnar> fixed dat
[15:52] <adwiens_KC0WYS> jcoxon: I'm still designing, will probably be a while because of school and research, etc
[15:52] <LeoBodnar> APRS needs more SSIDs
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[15:52] <jcoxon> LeoBodnar can't you keep going up
[15:52] <jcoxon> as long as its <100
[15:53] <craag> 4 bits :(
[15:53] <craag> jcoxon: ^^
[15:53] <craag> In AX25
[15:53] <jcoxon> oh yeah just saw that
[15:53] <jcoxon> silly protocol
[15:53] <Upu> lol
[15:53] <LeoBodnar> heh
[15:54] <Upu> wanted : someone with a good word to say about APRS Protocol
[15:54] <jcoxon> for igates you can go higher
[15:54] <jcoxon> once its off the air
[15:54] <LeoBodnar> I have two words to say abou it
[15:54] <LeoBodnar> http://www.youtube.com/watch?v=jY4tD2Hbg_A
[15:55] <DL1SGP1> The good thing about APRS Protocol is that the way it created a worldwide network of listening stations permitted us to see LeoBodnar's B-40 win teh challenge :)
[15:55] <edusupport> with everything running my payload is pulling 350ma
[15:55] <Upu> wow
[15:55] <Upu> does that have electric heater in it ? :)
[15:55] <edusupport> lol
[15:55] <DL1SGP1> I was about to ask about a toaster Upu :)
[15:55] <fsphil> aprs is better than ... smoke signals
[15:55] <edusupport> i know lol
[15:55] <Upu> whats in it edusupport ?
[15:56] <DL1SGP1> Reminds me of when the payload temp of SP3OSJ's one flight went extremely high close to Bornholm :)
[15:56] <Upu> hand warmers lol
[15:57] <edusupport> pi ublox ntx2 bmp085 dht22 its 11.1v through a power supply board
[15:57] <adwiens_KC0WYS> Is reading the APRS spec the best way to write a tracker? I started reading it, but it's 128 pages long !
[15:58] <Upu> ah i
[15:58] <Upu> Pi
[15:58] <Upu> in that case I take it back sounds about right
[15:58] <Upu> fly the Model A
[15:58] <LeoBodnar> that's just a list of known bugs in APRS adwiens_KC0WYS
[15:58] <jcoxon> hehe we are quite mean to APRS aren't we
[15:58] <jcoxon> its actually awesome
[15:58] <adwiens_KC0WYS> haha
[15:58] <jcoxon> my favourite thing i've done in radio is ping the ISS using APRS
[15:58] <LeoBodnar> there are few things that have been dropped, added, reused and changed after that
[15:59] <edusupport> could do I have 1720 mah batts very light lipos
[15:59] <LeoBodnar> yeah APRS is a good idea
[15:59] <LeoBodnar> and HDLC was handy at the time
[15:59] <craag> edusupport: 11.1V @ 350ma?
[16:00] <edusupport> looks like it
[16:00] <craag> My Pi+picam+ntx2b pulls 110mA at 9V with the camera recording.
[16:00] <LeoBodnar> All the documentation is listed on http://www.aprs.org/ but good luck finding it
[16:00] <craag> With the camera in standby, it's 60ma
[16:00] <adwiens_KC0WYS> The aprs website looks like it belongs on geocities
[16:01] <Maxell> LeoBodnar: will M0XER-A also cause to roll over the bits-limit?
[16:01] <LeoBodnar> The two best things to say about APRS is that unlike all these clever ideas discussed and wished for it's out there and it works
[16:01] <jcoxon> yes
[16:02] <LeoBodnar> Well it's M0XER-15 and then M0XER-0 again
[16:02] <edusupport> is yours rev a
[16:02] <craag> edusupport: Yeah, was 150mA with cam in standby on model b
[16:05] <edusupport> I think its the power reg board
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[16:08] <craag> edusupport: It is a switch-mode right?
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[16:08] <craag> Sounding a bit linear to me...
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[16:09] <adwiens_KC0WYS> 11.1v down to 5v at 350ma with a linear will be nice and toasty :)
[16:09] <craag> yeah!
[16:09] <craag> Perhaps more use as the launch site bacon grill than a payload :P
[16:09] <jededu> http://www.primarypi.co.uk/images/pwr_bd.png
[16:10] <jededu> probably a bit ott
[16:10] <Upu> thats the err 78 something
[16:10] <Upu> its about 70% efficient I think
[16:12] <Upu> it is a little OTT does 3A
[16:13] <craag> I use a little 3.3V 600mA polulu board
[16:13] <jededu> its just what we use for the robots at school
[16:13] <craag> To the right of the large diodes in this pic:
[16:13] <craag> https://www.philcrump.co.uk/File:POPEYE_Inside.JPG
[16:14] <LeoBodnar> Even with 100% efficient DCDC converter most of the consumed energy will end up as heat inside the payload
[16:15] <craag> Yep, but in this case only about a 1/3 of the heat compared to using a switch-mode reg.
[16:15] <LeoBodnar> should still be enough to survive?
[16:16] <LeoBodnar> what is the most temperature limited part in such a package? something in the Pi?
[16:22] <jededu> craag this one?
[16:23] <jededu> http://www.pololu.com/product/2122
[16:23] <Willdude123> Hello again
[16:25] <craag> jededu: I get them through a local reseller but looks similar..
[16:25] <craag> Ah no the one I've got goes upto 42V input
[16:25] <craag> http://www.technobotsonline.com/pololu-step-down-3.3v-600ma-voltage-regulator-d24v6f3.html
[16:26] <craag> Which is this one on polulu http://www.pololu.com/product/2106
[16:27] <jededu> Cool ill order some
[16:29] <craag> LeoBodnar: I'm sure it'd survive, I was thinking battery weight/cost reduction.
[16:29] <mclane_> the 2122 you are using is quite ok
[16:29] <mclane_> I have the same
[16:30] <craag> Yeah the 2122 also claims better efficiency
[16:30] <jededu> you guys may find this site usefull lots of boards for the Pi http://www.pridopia.co.uk
[16:31] <jededu> and cheap sensors
[16:34] <mclane_> I am working on an add-on board for the pi with ublox, 2x NTX2b, A/D converter for bat voltage monitoring and the pololu switcher integrated
[16:34] <mclane_> pcbs ordered from hackvana are on the way...
[16:35] <craag> How are you driving the 2x ntx2?
[16:36] <mclane_> one is connected to the tx out for the usual rtty; one is connected to the pwm out to do dominoex
[16:36] <craag> Oh cool!
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[16:37] <mclane_> ublox gps is connected to the pi via i2c
[16:37] <craag> software i2c?
[16:37] <mclane_> yes
[16:37] <craag> Cool stuff
[16:37] <craag> spi adc?
[16:37] <mclane_> hw i2c does not work correctly since the ublox does clock stretching
[16:38] <craag> mm
[16:38] <mclane_> adc is on spi yes
[16:38] <craag> very nice
[16:39] <mclane_> also 2 ds18b20 temp sensors
[16:40] <mclane_> and a 9 dof sensor cluster
[16:41] <craag> Do you have a project page for this?
[16:41] <mclane_> some information can be found here: www.stratosphaere.net
[16:42] <jededu> sounds cool
[16:42] <mclane_> but I have not published the pcb design yet (did not have time)
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[16:47] <mclane_> sw is on github: https://github.com/mclane/RasPiTracker
[16:50] <daveake> mclane_ That sounds like a close match for one of my Pi trackers :)
[16:51] <daveake> I've not done 2 NTX2s yet (not without an AVR in the way) but I do have PWM working
[16:52] <mfa298> some of that code looks very familiar :p
[16:52] <mclane_> yea, of course I have grabbed here and there... ;-)
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[16:52] <daveake> ha
[16:52] <daveake> I prefer to write my own bugs :p
[16:53] <jededu> pi is the future
[16:53] <mclane_> yea, that's right; but I only have limited time, so I need to rely on the bugs of others ;-)
[16:55] <mclane_> actually, I am working to replace the rtty telemetry by a version with FEC
[16:56] Action: mfa298 should probably put some sort of license on my code. (I don't particularly mind it being copied but it would be good if it's referenced as to where it came from)
[16:57] <mclane_> I will add the references in the next commit, sorry for that
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[17:00] <mfa298> it's potentially of benefit to you as it passes the blame to my testing code when the pi crashes horribly.
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[17:01] <mfa298> and some of my code was being very crashy recently (playing around with memory when the datasheet doesn't tell you much makes life interesting!)
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[17:07] <daveake> Yeah, flights are never exciting enough :p
[17:19] <mclane_> mfa298: I added the references in the readme on github; hope that it is ok?
[17:21] <Upu> hey mclane_ PM :)
[17:22] Nick change: mclane_ -> mclane
[17:24] <mclane> upu: I have a new IRC client where I don't know where to change to pm
[17:24] <mclane> need to go back to my old one
[17:24] <Upu> whats the client ?
[17:24] <mclane> just a moment
[17:24] <mclane> quassel
[17:24] <Upu> never heard of it
[17:25] <Upu> type /query Upu
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[17:26] <Upu> I probably would revert an IRC client where you can't find private messages does kinda suck
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[17:54] <mikestir> mclane: do you not see PMs in the "all chats" list underneath the channels you are in?
[17:54] <mclane> yea; I had the "all chats" part switched off
[17:55] <mikestir> ahh
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[18:17] <Willdude123> Spent the afternoon playing around with an EC2 instance
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[18:32] <Oddstr13> got my RTL dongle in the mail today
[18:33] <Oddstr13> however, i can't find any signals with SDR#
[18:34] <Oddstr13> except an occasional sine wave on LSB
[18:37] <fsphil> have you tried broadcast FM stations?
[18:37] <Oddstr13> yea, browsed from 80MHz and upwards
[18:37] <fsphil> they're usually strong enough to be picked up even with the little antennas provided with the dongles
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[19:48] <Lunar_Lander> hello
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[19:49] <Monroe> hey
[19:50] <Lunar_Lander> how's life?
[19:50] <Monroe> oh just fine I suppose
[19:51] <DL1SGP1> nabend kevin
[19:51] <Monroe> about to go out and work outside some
[19:51] <Lunar_Lander> hi
[19:51] <Monroe> anything flying?
[19:52] <Monroe> I'll check back later
[19:53] <mfa298> dont think so at the moment, but there might be some flights in the UK tomorrow.
[19:54] <Monroe> thanks roger that
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[19:56] Nick change: DL7AD_ -> DL7AD
[20:00] <fsphil> forecast is actually looking fairly good here
[20:01] <SpeedEvil> http://store.fiberguide.com/?product=apc300400500n grr
[20:01] <SpeedEvil> Stupid minimum orders
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[20:40] Nick change: Jones_ -> Guest33539
[20:41] <Guest33539> Hi! I have a question: I'm planning a flight, how do I test the telemetry with dl-fldigi? I've already created
[20:41] <Guest33539> *generated the payload
[20:42] <Guest33539> Here: http://habitat.habhub.org/genpayload/
[20:44] <Upu> just upload
[20:45] <Upu> http://habitat.habhub.org/logtail/
[20:46] <Upu> http://www.bbc.co.uk/news/science-environment-26023166
[20:49] <Guest33539> Upload how?
[20:49] <Upu> are you transmitting ?
[20:50] <Guest33539> Yes
[20:50] <Upu> ok have you got dl-fldigi open in HAB mode ?
[20:50] <Guest33539> Yes
[20:50] <Upu> can you post a screen shot please so we can see what you see ?
[20:51] <Guest33539> Of dl-fdigi? Ok
[20:51] <Upu> yes pls
[20:54] <DL1SGP1> thanks for the announcement Anthony, that is great news, thanks for the hard work on firmware mods steve :)
[20:55] <Upu> nps just wanted to tell anyone who's currently making PCB's
[20:55] <DL1SGP1> will be neat for mass launches :)
[20:55] <Upu> yep
[20:56] <Guest33539> Here: http://tinypic.com/r/ymama/8
[20:57] <Upu> ok thats not recieving anything
[20:57] <Upu> can you turn the volume on the radio up
[20:57] <Upu> so that black diamond bottom right goes green
[20:58] <DL1SGP1> yeap, waterfall is pitch black, so you have no reception of any signal at present Guest<number>
[20:58] <Guest33539> Its is up, maybe there's something wrong with the radio
[20:58] <Upu> can you hear the RTTY on the radio ?
[20:59] <Guest33539> Nope
[20:59] <Upu> how do you know you're transmitting ?
[20:59] <DL1SGP1> Please disregard the question if asked already: what are you using for reception of the signal?
[21:00] <Guest33539> using sdrsharp with a tv dongle I can see the signal
[21:00] <Guest33539> And it goes down when I turn off the NTX2
[21:00] <Upu> ok can we have a screen shot of that ?
[21:00] <DL1SGP1> ok and how are you feeding it into DL-Fldigi? Stereomix? Virtual Audio Cable?
[21:02] <Guest33539> I'm not using the dongle, I'm trying to use the radio! I'm gonna take a screenshot, wait!
[21:02] <DL1SGP1> thank you :)
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[21:07] <Guest33539> http://tinypic.com/r/25fhut0/8
[21:07] <Willdude123> I found a fundamental flaw in my version of pong - if you just leave the bat in the same place, it will go back and forth between the computer and player forever
[21:07] <Guest33539> Do you need a screen with the NTX2 off?
[21:10] <DL1SGP1> Guest33539: so if I understnad you well you plan to feed the NF produced by SDR# into DL-Fldigi so that the telemetry can get decoded? on the SDR# screenshot it would be cool to zoom in a bit on the signal :)
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[21:12] <mfa298> Guest33539: what frequency ntx2 have you got ?
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[21:12] <Guest33539> I undestand, but I'm trying not to use the dongle, cause its sensitivity isn't good, dl-fldigi is using the radio
[21:13] <Guest33539> 434.650 Mhz
[21:13] <mfa298> assuming it's the 434.650 version it might help to tun so that 434.650 isn't the centre frequency, some rtl dongles have an odd spike in the centre which might mean you don't hear it as well
[21:13] <mfa298> what radio are you using with dl-fldigi then ?
[21:14] <Willdude123> Interesting - very poor reception of my local radio station
[21:14] <DL1SGP1> Yeah, what radio are you using, are you hearing the RTTY in the radio and how is the radio connected to your computer
[21:14] <Willdude123> Perhaps all this weather is causing something
[21:14] <DL1SGP1> Willdude123: soaken connectors on the BC Antenna?
[21:14] <Guest33539> Yaesu FT-790R
[21:15] <DL1SGP1> are you hearing the RTTY sound in teh FT-790R when you tune to the freq on your ntx2?
[21:15] <Guest33539> Nope
[21:16] <mfa298> how is the ntx2 connected up ?
[21:16] <Guest33539> I guess that's broken... I borrowed from a friend
[21:16] <mikestir> have you got it set to USB?
[21:16] <Guest33539> The NTX2 is connected to a raspberry pi via UART
[21:16] <Guest33539> Yes it is set to USB
[21:16] <mfa298> how is the ntx2 powered (and the EN pin)
[21:17] <mfa298> also if you're using the UART on the Pi have you killed the processes that normally use the UART (Kernel, getty )
[21:19] <Guest33539> EN and VCC to 3.3, GND to GND, two 4.7K resistors between TX and VCC/GND, and a 20K to the TX pin
[21:19] <Guest33539> what processes?
[21:19] <Guest33539> I don't think so
[21:20] <mfa298> it may be better to connect the VCC and EN pins on the ntx2 to the 5V line as there's limited power available on the 3v3 line on the pi (unless you've modded the onboard regulator)
[21:21] <Guest33539> I did
[21:21] <mfa298> by default on rasbian there are a couple of processes that use the UART would you will need to disable otherwise they interfere
[21:21] <Guest33539> It runs only on 3.3V now
[21:23] <Guest33539> How do I know which processes use UART?
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[21:25] <DL1SGP1> http://www.raspberry-projects.com/pi/pi-operating-systems/raspbian/io-pins-raspbian/uart-pins
[21:26] <Guest33539> Yes I already did that
[21:27] <DL1SGP1> phiew
[21:27] <DL1SGP1> ok... err when you have that SDR# set to that frequency with the USB filter, do you hear the RTTY?
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[21:29] <Guest33539> ...No!
[21:30] <Guest33539> Something is wrong with the trasmitter / the python code / the connection between the Raspberry and the NTX2
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[21:30] <Guest33539> Better than a broken radio for sure
[21:31] <DL1SGP1> yup... time to go through wiring and see if all is as it should be...
[21:32] <Guest33539> Well, I guess the problem is in the code: when I turn the Pi off and disconnect the NTX2, the signal in SDRsharp goes blank
[21:33] <Guest33539> So something *is* coming out
[21:33] <gonzo_nb> you should hear a carrier, even if the ntx is not being keyed
[21:34] <Guest33539> And how does it sound?
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[21:35] <gonzo_nb> a single tone
[21:36] <DL1SGP1> Guest33539: I guess you are seeing that Carrier of the NTX2 being powered on your SDR in terms of "what does it sound like" in SSB it should sound like a continous beeeeeeeeeeeeeeep
[21:36] <Guest33539> Yes, I can hear that
[21:36] <Guest33539> so, the NTX2 should be fine
[21:36] <Guest33539> the problem is in the connection or in the code
[21:36] <Guest33539> I'm gonna check it out
[21:36] <gonzo_nb> and if the ntx is close to the rx it will be a strong signal
[21:37] <Guest33539> thak you very much!
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[21:43] <Guest33539> It's working!!!
[21:43] <Guest33539> I've made a STUPID mistake
[21:43] <Guest33539> Connected the TX to the RX, and not to the TX
[21:44] <Guest33539> Ahahahah thanks again :)
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[21:46] <DL1SGP1> welcome :)
[21:59] <Lunar_Lander> LeoBodnar, if you are here, do you know from the top of your head: which of your flights had the greatest great-circle distance?
[21:59] <Lunar_Lander> B-22 I think
[21:59] <LeoBodnar> http://leobodnar.com/balloons/B-22/index.html
[22:00] <LeoBodnar> yes
[22:01] <Lunar_Lander> thanks
[22:02] <daveake> might be on the "records" page of the wiki
[22:02] <Lunar_Lander> ah ok
[22:05] <LeoBodnar> I have updated the page with flight path
[22:10] <Lunar_Lander> thanks!
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[23:50] <Willdude123> I finally sort of figured it out http://scratch.mit.edu/projects/18018908
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[23:51] <Reb-SM3ULC> Willdude123: got "Tyvärr, projektet är inte delat"
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[23:52] <Willdude123> What language is that?
[23:52] <Willdude123> Ah try again
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[23:52] <LeoBodnar> Looks like Svenska
[23:56] <chrisstubbs> Cool news about the NTX2B firmware upu :)
[23:56] <chrisstubbs> Will it be user flashable or only flashable by you?
[23:57] <Willdude123> chrisstubbs, what news?
[23:57] <chrisstubbs> https://groups.google.com/forum/?fromgroups#!topic/ukhas/2m1VAb6WOu0
[23:58] <Willdude123> thx
[23:58] <Willdude123> So how exactly can firmware give better agility?
[23:59] <Willdude123> Aren't they designed for ISM anyhow
[23:59] <chrisstubbs> The frequency is factory set in the firmware
[23:59] <chrisstubbs> this allows us to change it
[00:00] --- Sun Feb 16 2014