highaltitude.log.20121029

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[00:27] <Lunar_Lander> let me tell you
[00:27] <Lunar_Lander> the universe is saved XD
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[03:13] <heathkid> Laurenceb: #space ??? more useful info in here...
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[04:39] <mrShrimp> Hey is anyone online?
[04:39] <natrium42> maybe
[04:40] <mrShrimp> Great!
[04:40] <natrium42> :)
[04:40] <mrShrimp> I had a question actually
[04:40] <Darkside> maaaaybe
[04:40] <mrShrimp> about quarter wave ground plane antennas
[04:40] <natrium42> Darkside is your man
[04:40] <natrium42> :D
[04:40] <Darkside> wait, i am?
[04:40] <Darkside> :O
[04:40] <natrium42> brb laundry
[04:40] <mrShrimp> 0_0
[04:40] <Darkside> we only just met!
[04:41] <natrium42> you are an RF engineer!
[04:41] <Darkside> >_>
[04:41] <natrium42> :P
[04:41] <mrShrimp> eh
[04:41] <Darkside> no, i'm a researcher
[04:41] <Darkside> but anyway
[04:41] <Darkside> mrShrimp: ask away
[04:41] <mrShrimp> Cool, thanks!
[04:41] <mrShrimp> I wanted to build something similar to the last item on this page
[04:41] <mrShrimp> http://code.google.com/p/trackuino/wiki/Antennas
[04:41] <mrShrimp> for my first HAB that I am on my way to launching
[04:41] <Darkside> which one do you mean
[04:42] <Darkside> the half wave ground plane?
[04:42] <mrShrimp> ya
[04:42] <Darkside> ack
[04:42] <mrShrimp> the one with brass tubing
[04:42] <Darkside> i dunno much about those
[04:42] <Darkside> jeez
[04:42] <mrShrimp> oh ok
[04:42] <Darkside> brass tubing?!
[04:42] <mrShrimp> ya
[04:42] <mrShrimp> it says
[04:42] <Darkside> oh you mean the 1/4 wave ground plane
[04:42] <mrShrimp> yes
[04:42] <mrShrimp> oh sorry
[04:43] <mrShrimp> I totally misread halfwave :p
[04:43] <Darkside> anyway, sure
[04:43] <Darkside> the ground radials don't need to be bent like that
[04:43] <Darkside> they can be 90 degrees to the main element if that's easier
[04:43] <mrShrimp> ok
[04:43] <mrShrimp> does the brass tubing really matter?
[04:43] <mrShrimp> http://www.amazon.com/Brass-Square-Tubing-0-014-Length/dp/B000FN2B6I/ref=lh_ni_t
[04:43] <Darkside> well brass tubing wil be heavy
[04:43] <Darkside> http://pipe2.darklomax.org/pics/2012-10-07_Horus_29/Pages/26.html
[04:44] <Darkside> thats one of our payloads, which uses wire rope
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[04:44] <mrShrimp> 0_0
[04:44] <mrShrimp> how does that act as an antenna?
[04:44] <Darkside> well it's a 1/4 wave ground plane, just built into the payload box
[04:44] <Darkside> you can see that the main radial is insulated from the box
[04:45] <mrShrimp> Oh, right
[04:45] <Darkside> the antenna is connected to a SMA cable inside the box
[04:45] <Darkside> http://pipe2.darklomax.org/pics/2012-10-07_Horus_29/Pages/31.html
[04:45] <mrShrimp> That would probably be more stable than the tubing
[04:45] <Darkside> which connects to the payload
[04:45] <Darkside> well, it'll be lighter
[04:46] <Darkside> and won't break when it hits the ground
[04:46] <mrShrimp> k
[04:46] <mrShrimp> Thank you, that sounds like a good idea to implement.
[04:47] <mrShrimp> Does the foil coating serve any purpose?
[04:48] <Darkside> not really
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[04:56] <mrShrimp> So just hanging the parachute under the payload worked for you? (http://pipe2.darklomax.org/pics/2012-10-07_Horus_29/Pages/27.html)
[04:57] <mrShrimp> oh hold on
[04:57] <mrShrimp> There are many payloads there
[04:59] <mrShrimp> What does the spiky thing do?
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[05:05] <Darkside> eh?
[05:05] <Darkside> oh
[05:06] <Darkside> thats a camera payload
[05:06] <Darkside> the spiky bits were an effort at stabilizing it
[05:06] <Darkside> which didn't work too wel
[05:09] <mrShrimp> hm
[05:10] <mrShrimp> Why not put the camera and gps together?
[05:12] <Darkside> well we already have working telemetry payloads
[05:12] <Darkside> and we already had a working camera payload box
[05:12] <Darkside> we prefer to fly things as separate payloads
[05:13] <Dan-K2VOL> mrShrimp, that also reduces the chance of the GPS being interfered with by other electronics, which happens
[05:13] <mrShrimp> ok
[05:13] <Dan-K2VOL> cheap video cameras are notorious for causing gps desensitization
[05:14] <mrShrimp> Would an Ixus 80 fall under the category of cheap? :p
[05:14] <Dan-K2VOL> you just have to try it out
[05:14] <mrShrimp> k
[05:15] <mrShrimp> My first launch will probably not have any telemetry other than the GPS downlink.
[05:15] <Dan-K2VOL> what country?
[05:15] <mrShrimp> U.S.
[05:16] <Dan-K2VOL> where?
[05:16] <mrShrimp> Washington State
[05:16] <Dan-K2VOL> what type of radio are you using?
[05:16] <mrShrimp> ntx2
[05:16] <mrShrimp> I am following the UKHAS tutorials
[05:16] <Dan-K2VOL> nice
[05:16] <mrShrimp> because APRS seems a bit sketchy to me
[05:17] <Dan-K2VOL> APRS works, but it's a pain, and a balloon with the wrong APRS settigns can gridlock the APRS network
[05:17] <Dan-K2VOL> do you have many receivers ready?
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[05:18] <mrShrimp> What do you mean?
[05:18] <mrShrimp> Multiple people receiving?
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[05:19] <Dan-K2VOL> you'll get dozens to hundreds of people receiving, and if they are set to digi-peat, and you have a very high number of digipeat repeats set in your transmit packet, they will all digipeat your packet back and forth for a long time
[05:19] <Dan-K2VOL> WIDE-WIDE I think is the big no-no
[05:20] <mrShrimp> What is the solution?
[05:20] <Dan-K2VOL> Don't set it to that
[05:20] <Dan-K2VOL> I don't remember the proper setting, but the effect is to tell the receiver to NOT digipeat the packet, or digipeat only once
[05:20] <Dan-K2VOL> WIDE-1 maybe?
[05:21] <mrShrimp> Well
[05:21] <mrShrimp> I don't have a proper receiver
[05:21] <mrShrimp> I am using an SDR dongle with a preamp/filter
[05:21] <mrShrimp> for my main receiving module
[05:21] <Dan-K2VOL> you can probably drop a line to local ham clubs and see if anyone would like to help you receive
[05:21] <mrShrimp> That sounds like a good idea
[05:22] <mrShrimp> I only just got my license though, so I will need to familiarize with the community :p
[05:22] <Dan-K2VOL> anyone with 440 (UHF) ham radios should be able to, though I think they will need to run it in SSB mode to decode the NTX2
[05:23] <Dan-K2VOL> SSB is not likely to be on every 440 radio
[05:23] <Dan-K2VOL> (70cm band)
[05:23] <mrShrimp> It isn't even on the NRX2
[05:23] <mrShrimp> haha
[05:23] <Dan-K2VOL> heh
[05:25] <mrShrimp> They will need to use dl-fldigi if I want it to show up on the spacenear.us tracker, right?
[05:25] <Darkside> yup
[05:27] <mrShrimp> Darkside, I noticed that on the first Horus launch there was a problem with the camera lens getting fogged up.
[05:27] <mrShrimp> I was wondering what the best method of avoiding this would be?
[05:28] <Burninate> glass lens?
[05:29] <Dan-K2VOL> typically fogging is caused by having anything inbetween your camera's normal lens and the environment
[05:29] <mrShrimp> Ok
[05:29] <Dan-K2VOL> don't use a window or sealed enclosure
[05:29] <Burninate> http://www.telescopes.com/telescope-accessories/dew-prevention/dewheaters.cfm is a thing
[05:29] <Dan-K2VOL> that's not worth doing on balloons
[05:30] <mrShrimp> That would draw quite a bit of power, wouldn't it?
[05:30] <Dan-K2VOL> as long as you don't go through clouds and get physically wet, you won't frost on bare glass lenses
[05:31] <mrShrimp> Good thing there are no clouds in the Northwest during the winter.
[05:31] <mrShrimp> oh wait... haha
[05:31] <Dan-K2VOL> particularly if you have the lens in the air stream going by
[05:31] <mrShrimp> I guess I will have to pick a good day then
[05:32] <Dan-K2VOL> yeah, you really should anyway so aircraft can avoid the balloon visually
[05:33] <mrShrimp> Definitely, but I find it odd that the FAA regulations don't apply to payloads under 4lbs of weight, and a certain amount of mass density.
[05:34] <mrShrimp> I will still abide by them, except for the two mandatory cutdown methods. Do you have any experience setting these up?
[05:34] <mrShrimp> They seem like they would complicate things and increase cost quite a bit.
[05:43] <Dan-K2VOL> you don't need them unless you exceed the exemptions
[05:44] <Dan-K2VOL> they aren't too complicated once you have a design that's proven, but that's not always easy to come to
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[06:43] <Upu> morning Dan
[06:43] <Dan-K2VOL> morning upu
[06:43] <Upu> you got mail
[06:44] <Upu> you got a storm coming ?
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[06:44] <Dan-K2VOL> Oh I would have, but I jetted out to Kentucky in the midwest US by chance
[06:44] <Dan-K2VOL> had a visit home planned
[06:45] <Upu> ok best stay there for a few days
[06:45] <Dan-K2VOL> nice, I only was looking at the 5V version
[06:45] <Upu> yeah I'm going to replace all those components with a level converter chip in the next version
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[06:46] <Upu> but the 3.3v version has it broken out already
[06:46] <Dan-K2VOL> so about the ublox battery input, I presume that allows you to shut down the power and still retain the almanac?
[06:47] <Upu> yep
[06:47] <Darkside> yes
[06:47] <Dan-K2VOL> so is that just shorted to VCC normally on your boards?
[06:47] <Upu> just check data sheet battery input is 1.8 to 3.3v I think
[06:47] <Upu> no ground
[06:47] <Upu> if you're not using it connect to ground
[06:48] <Upu> however it doesn't seem to affect the operation of the chip if its just floating
[06:48] <Dan-K2VOL> interesting. So are you able to put the thing to sleep without losing the almanac?
[06:48] <Upu> yep you can pull the power entirely
[06:48] <Darkside> Upu: i've had some be affectd by having it floating
[06:48] <Upu> there is a software command to put the GPS to sleep too
[06:48] <Upu> drops usage to 5mA
[06:48] <Darkside> it may have been an older model
[06:49] <Upu> well datasheet says to GND or a battery
[06:49] <Upu> so I wouldnt' advise operating outside this
[06:49] <Upu> Dan http://pastebin.com/TJ76dTJp
[06:50] <Dan-K2VOL> very interesting
[06:50] <Upu> however power saving is something I'm working on at the moment
[06:50] <Upu> as there is an issue where if it looses lock whilst in cyclic mode it never gets it back
[06:50] <Upu> might be my code
[06:50] <Dan-K2VOL> yikes
[06:51] <Upu> Daveake is testing it with his code too
[06:51] <Upu> in theory in cyclic mode at 10 seconds should get another 50% battery life
[06:51] <Dan-K2VOL> nice
[06:51] <jcoxon> oooo a test flight in uruguay
[06:51] <Upu> that will be 40 hours on the AA from the 1.8V payload
[06:51] <jcoxon> that would be exciting
[06:51] <Dan-K2VOL> nice jcoxon
[06:52] <Dan-K2VOL> nice upu
[06:52] <jcoxon> our first S. american flight
[06:52] <jcoxon> well its just someone testing
[06:52] <Upu> interesting
[06:52] <Upu> We had someone from Chile asking about stuff
[06:52] <Upu> not Uruguay though
[06:54] <Dan-K2VOL> meh I"m sure it's just some Iranian who messed up his negative/positive lat/lon again
[06:54] <Dan-K2VOL> :-P
[06:54] <Upu> lol
[06:56] <jcoxon> Upu, my relay balloon code is coming along
[06:56] <Upu> yeah I had a quick chat with navrac last night sounds interesting
[06:56] <Upu> seen the spec
[06:56] <jcoxon> https://github.com/jamescoxon/PicoAtlas/blob/master/Pico80/rf22_server/rf22_server.ino
[06:56] <Upu> how many balloons are you planning on having aloft at once ?
[06:57] <jcoxon> at first just one
[06:58] <Upu> Are you going to prerecord the messages and TX from a HAM rig ?
[06:58] <Dan-K2VOL> have you guys played with calibrating AVR oscillator timing using the GPS output pulses?
[06:58] <Upu> not me Dan, I know Navrac was looking at using it to stabilise the radio
[06:58] <jcoxon> Upu, so the relay balloon literally just listens for the gfsk from the lead balloon
[06:58] <jcoxon> when it gets a string it switches freq and tx's it in rtty
[06:59] <Dan-K2VOL> nice james
[06:59] <jcoxon> relying on the fact that the balloon will have great line of sight
[06:59] <Dan-K2VOL> a half-duplex digipeater?
[06:59] <jcoxon> so in theory you could tx up as well
[07:00] <Upu> dan you know the ublox you can change the frequency of the time pulse ?
[07:00] <Dan-K2VOL> no I hadn't looked at it's info yet, that could be helpful
[07:00] <Dan-K2VOL> I've got to get to bed though, will talk to you guys later!
[07:00] <Upu> night Dan
[07:01] <Upu> I'll have to get some more Badgeboards made at this rate :)
[07:02] <Upu> right work calls bbl
[07:02] <jcoxon> whats nice would be that any rfm22 board could run this
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[08:40] <SamSilver> morning daveake welcome back form cali
[08:40] <SamSilver> also from
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[08:41] <daveake> been back a week :-)
[08:41] <daveake> Well, :-( really
[08:41] <SamSilver> lol
[08:41] <SamSilver> well i was busy
[08:42] <SamSilver> daveake: made a 2m antenna > http://imgur.com/a/fd6YB#0
[08:42] <UpuWork> I so approve of that its not even funny
[08:43] <daveake> gaytenna
[08:43] <UpuWork> That chap from the mailing list should see this
[08:43] <UpuWork> never mind what colour the payload should be
[08:43] <daveake> :D
[08:43] <SamSilver> also made one like this http://imgur.com/a/onCzs#0
[08:43] <UpuWork> what would be the public reaction to someone walking round with a bright pink antenna
[08:43] <UpuWork> I need to make one of those
[08:44] <UpuWork> I broke my Diamond
[08:44] <eroomde> UpuWork: there's one way to find out!
[08:44] <UpuWork> indeed - SURVEY!
[08:44] <SamSilver> and then two like this http://imgur.com/a/onCzs#7
[08:44] <UpuWork> look good Sam
[08:45] <daveake> Payload colour doesn't matter. If you want to break the ice when it lands on someone's car, attach a teddy bear. Worked for me
[08:48] <Darkside> :D
[08:48] <Darkside> that was excellent
[08:49] <fsphil> so it's come to this. pinktennas
[08:50] <Darkside> pff
[08:50] <Darkside> we don't do the pink thing here in australia
[08:50] <joph> daveake, or paint it pink ;)
[08:50] <daveake> I ran out of pink wire for my payload radials. Had to order some more
[08:50] <joph> then just geeks and little girls would it steal ;)
[08:50] <joph> *steal it
[08:56] <griffonbot> Received email: "Re: [UKHAS] Re: Payload colour choice"
[09:00] <joph> seriously?
[09:00] <nick_> Why am I at work so early?
[09:04] <fsphil> I've been at work an hour
[09:04] <nick_> Getting back into work sucks, I want to go back to Hawaii
[09:05] <fsphil> never been there. it looks nice
[09:05] <nick_> Hawaii is awesome
[09:05] <nick_> Best place I've been so far
[09:06] <nick_> Could be fun trying to launch balloons there
[09:07] <nick_> Just hope they land on an island but not in lava
[09:08] <fsphil> that would be a good story for the wiki
[09:17] <daveake> Launching from 0.0000,0.0000 could be fun
[09:17] <fsphil> nobody would believe you
[09:17] <daveake> exactly
[09:20] <fsphil> you'd need to be doubly sure about your code too :)
[09:20] <Randomskk> how could you tell when it got a lock :P
[09:21] <Randomskk> "well, it's saying 0.000, 0.000..."
[09:22] <fsphil> there's probably a little pile of lost payloads there already
[09:23] <Darkside> some of my payloads are floating around bermuda
[09:24] <nick_> It would be really cool to fly a gas monitor over hawaii
[09:26] <nick_> Measure the vog
[09:58] <griffonbot> Received email: Frits PE2G "Re: [UKHAS] Payload colour choice"
[10:05] <nosebleedkt> hi everybody
[10:05] <nosebleedkt> UpuWork, what was that site you sent my pic ?
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[10:10] <navrac> ughhh, back to work :-(
[10:16] <costyn> morning
[10:16] <costyn> SamSilver: it's so pink it's almost painful to look at
[10:17] <RG-lz1dev> ?/fq 19
[10:17] <costyn> RG-lz1dev: that's what she said ;)
[10:17] <UpuWork> hey nosebleedkt
[10:18] <RG-lz1dev> costyn: thats my quick command for opening link through irssi
[10:18] <RG-lz1dev> :)
[10:18] <costyn> RG-lz1dev: hehe :)
[10:18] <UpuWork> it wasn't a site its some internal marketing/case studies Alphamicro are doing (they are the people who supply the ublox chips)
[10:19] <RG-lz1dev> costyn: that yagi would be great for cotton candy
[10:19] <costyn> RG-lz1dev: indeed :)
[10:21] <nosebleedkt> UpuWork, OK :)
[10:21] <nosebleedkt> UpuWork, thought they got some site, that's why i asked :D
[10:22] <UpuWork> if it does appear online I'll let you know
[10:22] <UpuWork> I've given then your name to credit the images too
[10:22] <UpuWork> they just wanted some examples of what amateurs were doing with the modules
[10:22] <UpuWork> you used a ublox right ?
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[10:33] <Burninate> "But like nitrogen or oxygen, hydrogen molecules exist only as a pair of hydrogen atoms stuck together, and so are much larger than a helium atom. "
[10:34] <Burninate> Will H2 exhibit significantly lower leakage rates than helium as well as being cheaper?
[10:38] <fsphil> I've heard that before
[10:38] <griffonbot> Received email: David Akerman "Re: [UKHAS] Payload colour choice"
[10:38] <fsphil> and the longest floating latext balloon was using H2
[10:39] <Burninate> what would you use to determine that?
[10:39] <Burninate> van der Waals radius?
[10:39] <fsphil> simple test, two small party balloons
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[10:41] <russss> yeah, I beleive it's pretty well-known that hydrogen leaks less than helium
[10:41] <russss> helium is the smallest molecule in standard conditions
[10:41] <Burninate> how much less?
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[10:43] <russss> well I believe it's not significant for a short HAB flight. The distinction is really only necessary if you want to do a superpressure
[10:44] <Burninate> I don't quite understand the terminology
[10:44] <Burninate> What's 'superpressure'?
[10:45] <daveake> http://en.wikipedia.org/wiki/Superpressure_balloon
[10:47] <Burninate> the partially filled stuff isn't used for long endurance?
[10:49] <daveake> A super-pressure *is* partially filled. The contents expand during ascent, till the envelope is full. At that point the ascent stops because the envelope material does not stretch.
[10:50] <Burninate> "This allows the balloon to keep a stable altitude for long periods. This is in contrast with much more common variable-volume balloons, which are either only partially filled with lifting gas, or made with more elastic materials."
[10:50] <Burninate> is that incorrect?
[10:51] <Burninate> in the distinction between superpressure and partially filled viable-volume
[10:51] <daveake> Super-pressure is a balloon with an inelastic skin, which rises to the point that the envelope is fully inflated
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[10:53] <daveake> Anyway, the reduced diffusion of H2 makes no practical difference unless the flight is looong. If you plan such a flight, you may wish to test H2 vs He with the actual balloon material.
[10:53] <navrac> daveake: i noticed earlier that upu says you are also testing the low power ublox mode - does it work for you?
[10:54] <daveake> He lied :)
[10:54] <UpuWork> going to test
[10:54] <navrac> oh fair enough, i just wondered why it works for me but for no one else
[10:54] <daveake> He's going to send me his command strings for me to try in my firmware
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[10:54] <navrac> oh ok
[10:55] <hackers> do you know which website is for estimating the balloon flight path in google map?
[10:55] <daveake> If it works for me then we point a finger at his (borrowed) code
[10:55] <UpuWork> hackers http://www.habhub.org/predict/
[10:55] <navrac> i must have accidently done something right - I'd like to know what it is so I can tidy my code up
[10:55] <daveake> hackers http://habhub.org/predict/
[10:55] <hackers> thankyou
[10:55] <costyn> navrac: hehe... accidental programming :)
[10:55] <daveake> oh too slow
[10:55] <hackers> lol
[10:55] <UpuWork> well its possible there are some issues in the EURUS/Joey code I use for reading the GPS thats breaking something
[10:56] <UpuWork> hence if I get daveake who doesn't use that to try it ..
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[10:57] <UpuWork> going to compare with yours though navrac
[10:57] <navrac> good luck with that - its a mess
[10:58] <UpuWork> well I wouldn't worry about that I can hardly judge you
[10:58] <navrac> i kept cutting it around till it worked - so comments bear no relation to the code
[10:59] <daveake> I remember some doing a code review (not of mine!) ... "Well, I can see what this code is doing, but I haven't a clue what the comments mean"
[10:59] <daveake> someone*
[10:59] <navrac> sadly ive come a cropper on that again. - testing the RFM's at lower baud rates yesterday - it worked then tried maybe 20 different ways of doing low rates , then gaver up - went back to the original and found it doesnt work on that either
[11:00] <UpuWork> you use EURUS code as well though navrac ?
[11:00] <navrac> by which time I'd overwritten the good values and so no idea how to get it back to the start
[11:00] <navrac> well some of it - its more like a frankenstein monster
[11:00] <mattbrejza> UpuWork: what was the actual issue with low power mode with the ublox?
[11:00] <mattbrejza> i would say my low power code works well enough for a flighjt
[11:00] <UpuWork> well under testing with my code
[11:00] <UpuWork> if it looses lock
[11:01] <UpuWork> the GPS never gets a lock back
[11:01] <UpuWork> I stress this might be my code
[11:01] <UpuWork> and not the power saving
[11:01] <mattbrejza> does the gps still output data?
[11:01] <UpuWork> no it just keeps repeating the same values
[11:01] <UpuWork> and giving wierd values for dynamic model
[11:01] <UpuWork> its easy to test
[11:02] <mattbrejza> but you have it set to periodic giving out data rather than polled?
[11:02] <UpuWork> no I poll it
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[11:02] <mattbrejza> oh ok
[11:02] <mattbrejza> i have the gps giving me data
[11:02] <mattbrejza> because when you poll it waits until it wakes up before responding
[11:02] <UpuWork> basically just wait till it gets a lock, put it in cyclic mode, break the lock some how (I used a baked bean tin with a MDS camera in it)
[11:02] <navrac> the only bad thing i found about powersaving is if you set the on time too short it might not get a lock in the time its awake - but when it loses lock mine jumps out of powersave anyway
[11:02] <UpuWork> then remove the jammer
[11:03] <UpuWork> in this mode it wouldn't even respond to a cold boot request
[11:03] <UpuWork> however I can't replicate this behaviour via uCenter
[11:03] <UpuWork> so its likely to be code
[11:03] <navrac> and also if theres a weak signal the saving isnt huge as it has to spend a lot of time waiting for lock.
[11:03] <griffonbot> Received email: Ed Moore "Re: [UKHAS] Payload colour choice"
[11:03] <mattbrejza> well with mine, when it loses lock it stops outputting data (i think), the watchdog kicks in, ressets the micro which reinitises the gps and it gets lock almost immediately (if its moved back to the window)
[11:04] <UpuWork> well going to sit down and have a play this week
[11:05] <UpuWork> interesting fix using the WDT though
[11:05] <navrac> wheres darkside when you need him - i need the 512baud codes back as he probably has the only copy - unless i go back through the logs to january
[11:05] <mattbrejza> it saves having to actually implementing a timeout
[11:06] <mattbrejza> navrac: you can search, might be easier than you think to find
[11:06] <mattbrejza> also UpuWork because i get data in a different way might be why it works better for me over you
[11:06] <UpuWork> indeed
[11:07] <mattbrejza> just need to winds to die down so that it can actually be launched
[11:11] <griffonbot> Received email: Steve Aerospace "Re: [UKHAS] Re: Payload colour choice"
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[11:50] Nick change: Cadair -> Cadair_away
[11:52] Nick change: Cadair_away -> Cadair
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[12:26] <navrac> upu 250 baud now
[12:31] <Darkside> guys
[12:31] <Darkside> NSFW link: http://boards.4chan.org/b/res/433583908
[12:31] <Darkside> NSFW NSFW
[12:31] <Darkside> but balloon related
[12:31] <Darkside> there is porn on the page
[12:31] <Darkside> Hey /b/ro's its me again for more results.
[12:31] <Darkside> I am an engineering degree student doing a near space balloon project and I'm trying to get some global data on your reactions to the colour of my payload.
[12:31] <Darkside> >TLDR: I have a 2 question survey its quick as fuck and you just pick a colour. Halp.
[12:31] <Darkside> http://freeonlinesurveys.com/app/rendersurvey.asp?sid=er4ndrpie9srdcp138124
[12:31] <Randomskk> oh fuck what really
[12:31] <Darkside> and then someone posts porn
[12:31] <Darkside> but yes
[12:32] <Darkside> someone posted to /b/ ...
[12:32] <Darkside> oh my god
[12:32] <Darkside> its him
[12:33] <Randomskk> oh my god
[12:33] <Darkside> its the same survey
[12:33] <Darkside> i just posted with "Hello Adam"
[12:33] <Laurenceb> hahahaha
[12:34] <Darkside> to the thread
[12:34] <costyn> Darkside: omg LOL!!!!!!
[12:34] <Darkside> brace for epic
[12:34] <SpeedEvil> :-)
[12:34] <Laurenceb> this is so epic
[12:34] <Laurenceb> epic/0
[12:34] <costyn> Darkside: do you think it was Adam who posted it there?
[12:35] <Darkside> its the same survey
[12:35] <Darkside> so probably
[12:35] <Randomskk> dox him
[12:35] <Randomskk> we have his actual name
[12:35] <Darkside> well i posted "Hello Adam" to the thread
[12:35] <Randomskk> why does he say "me again"
[12:35] <costyn> Darkside: were you browsing 4chan when you stumbled across this?
[12:35] <Darkside> costyn: ... yes
[12:35] <costyn> fucking funny
[12:36] <costyn> (sorry for the swearword)
[12:36] <costyn> o wait, everybody's doing it :P
[12:36] <Darkside> he just responded with 'lol'
[12:37] <Randomskk> he's him posting the porn amusingly
[12:37] <Darkside> oh god
[12:37] <Darkside> who just posted his full name?
[12:37] <Randomskk> Darkside: hey I stumbled across something else on 4chan
[12:37] <costyn> oops 404
[12:37] <Darkside> aww
[12:37] <Darkside> Randomskk: whats that
[12:37] <costyn> well that didn't last long hehe
[12:38] <Randomskk> oh you know
[12:38] <Randomskk> you
[12:38] <Darkside> Randomskk: francis wheat
[12:38] <Darkside> lol
[12:38] <Randomskk> lol
[12:38] <costyn> wut?
[12:38] <Randomskk> explain yourself?
[12:38] <Darkside> Randomskk: eh?
[12:38] <Darkside> what do you mean?
[12:38] <Darkside> you mean yo posted to the thread too?
[12:38] <Randomskk> what? no
[12:38] <Darkside> :P
[12:38] <Darkside> oh
[12:38] <Darkside> nvm
[12:39] <Darkside> there was a picture of me floating around on /b/ for a while
[12:39] <Darkside> with an associated copypasta
[12:39] <costyn> Darkside: must've been good if it was reposted ?
[12:40] <Laurenceb> hehe
[12:40] <Laurenceb> link psl
[12:40] <Darkside> http://franciswheat.com/
[12:40] <Darkside> someone registered that domain name
[12:40] <Darkside> just to host that picture
[12:40] <Darkside> i still don't know who
[12:41] <Darkside> hmm
[12:41] <costyn> haha
[12:41] <Darkside> it links to arbition.net now
[12:41] <costyn> but eh, how does the name 'francis wheat' relate to pic?
[12:41] <Darkside> thats the point
[12:41] <Darkside> it doesn't
[12:41] <Darkside> the associated bit of text that followed the image around on 4chan was a bit weird
[12:41] <Darkside> blah blah i'm francis wheat my dad was in all LOTR Movies blah blah
[12:42] <Laurenceb> hahahahaha
[12:42] <Darkside> also i bet adam deleted the thread when whoever it was posted his full name
[12:42] <costyn> can you delete your own thread?
[12:42] <costyn> i don't go there often
[12:43] <Darkside> i think you can delete posts
[12:43] <W0OTM> iHAB-8 Launch Video - http://youtu.be/meUBN9b9ers
[12:45] <Randomskk> so perhaps porn is the best colour scheme
[12:45] <Randomskk> I can't believe how much porn he posted on his own thread
[12:45] <Randomskk> what the hell
[12:46] <Darkside> so do we subtly mention it on the mailing list?
[12:46] <costyn> Randomskk: hehehe true, great way to start your project. not sure his supervisors would approve hehe
[12:46] <costyn> Darkside: nah
[12:47] <costyn> although it would be funny to see his reaction
[12:50] <RG-lz1dev> pixalate some of areas
[12:50] <RG-lz1dev> problem solved
[12:54] <costyn> seems silly, a post like this would get buried in no time in /b/, don't think he got any reactions/surveys filled in
[12:54] <Darkside> thats why he was bumping it with porn
[12:54] <Darkside> to get it on the first page
[12:54] <costyn> yea, but still
[12:55] <Darkside> 23:24 <daveake> what's /b/ ?
[12:55] <Darkside> can someone help me out pleas
[12:55] Action: daveake is innocent
[12:56] <eroomde> best not to there daveake
[12:56] <daveake> Funnily enough ...
[12:56] <eroomde> a wretched hive of scum and villainy
[12:56] <RG-lz1dev> /b/ is where you dont wanna go
[12:56] <daveake> ... those are the same words Darkside used
[12:56] <costyn> daveake: http://en.wikipedia.org/wiki/4chan#.2Fb.2F_imageboard
[12:56] <costyn> (sfw)
[12:56] <daveake> And Yahoo answers says ... "It's a "random" image board on 4chan. I don't suggest going there."
[12:57] <eroomde> the internet equivalent of suddenly finding yourself in the wrong neighbourhood in detroit
[12:57] <daveake> ah
[12:57] <daveake> nice
[12:57] <costyn> yea it's not pretty, and very NSFW most of the time
[12:57] <RG-lz1dev> NSFL occasionally*
[12:57] <daveake> So, in other words, this Adam chappy is desparate to get answers to his f-ing stupid survey?
[12:57] <costyn> daveake: yup
[12:57] <daveake> gottit
[12:58] <RG-lz1dev> he should've included more colour options
[12:58] <Randomskk> daveake: so desperate he filled his thread with porn
[12:58] <RG-lz1dev> like turcoaz/orange
[12:58] <costyn> many internet meme's have sprung from the /b/ hivemind though, and they do occasionally get together to do good things
[12:59] <Darkside> http://images.4chan.org/b/src/1351515495904.jpg
[12:59] <Darkside> probably a good summary
[12:59] <nick_> eroomde: are there right neighbourhoods in Detroit?
[13:00] <Darkside> (SFW)
[13:00] <costyn> Darkside: hehehe
[13:00] <Darkside> though going to 4chan at work might not be a good idea
[13:00] <eroomde> nick_: not sure
[13:00] <eroomde> i was going to visit soon
[13:00] <Darkside> content is SFW though
[13:00] <daveake> suburbs are OK I think
[13:00] <nick_> I went there when I was a kid
[13:00] <RG-lz1dev> and you became a man
[13:00] <Laurenceb> hahah
[13:01] <costyn> kind of like going to /b/ :P
[13:01] <costyn> you're not quite the same person afterwards
[13:01] <RG-lz1dev> and you became a 'man'
[13:01] <Laurenceb> not as bad as the offensive page on ED
[13:01] <Darkside> Laurenceb: does the gif place still exist?
[13:01] <nick_> Presumably twice, since I remember going to the Ford museum as well as going downtown
[13:01] <Darkside> page*
[13:01] <Darkside> the one that crashes most browsers
[13:02] <costyn> Darkside: on ED?
[13:02] <Darkside> yeah
[13:02] <Laurenceb> you dont want to know
[13:02] <nick_> The Ford museum had a really crappy exhibition about mass production
[13:02] <Laurenceb> but if you head to ##stm32
[13:02] <Laurenceb> guy called dongs created it
[13:02] <Darkside> lol
[13:03] <Laurenceb> its called "last measures"
[13:03] <Laurenceb> javascript exploits + lots of porn
[13:03] <Laurenceb> and gore
[13:03] <Darkside> oh, GNAA
[13:03] <Laurenceb> yup
[13:03] <Darkside> lol
[13:03] <Laurenceb> hes the president of GNAA
[13:03] <BrainDamage> some people dedicate their life to an ideology, he simply dedicated his to the lulz
[13:03] <Darkside> bahahahhhahaa
[13:04] <Darkside> and he's on this irc network
[13:04] <Darkside> oh dear
[13:04] <Laurenceb> yes
[13:04] <Laurenceb> im talking to him now
[13:04] <BrainDamage> the best part is that Laurenceb didn't even realize who he was for a while
[13:04] <Laurenceb> lol
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[13:13] <BrainDamage> Darkside: just lurk in silence, you'll quickly notice the amount of OT it gets anyway :p
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[14:09] Nick change: Nabobalis -> zz_Nabobalis
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[14:09] <SamSilver> zz_Nabobalis: where you from?
[14:10] <zz_Nabobalis> England
[14:11] Nick change: zz_Nabobalis -> Nabobalis
[14:15] <SamSilver> Nabobalis: your nick sounds like the Afrikaans for "no hangover" babalaas = hangover
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[14:20] <Nabobalis> ah ok , I didn't know that :P
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[14:28] Action: LazyLeopard concluded a while back that just about anything sounds like something unexpected in some language or other...
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[14:46] <nick_> Am I right in thinking a fairly typical flight lasts around 2-3 hours?
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[14:46] <nick_> (I'm writing up a paper about my cosmic ray detector that I hope to launch soonish)
[14:48] <Laurenceb> ncik_: yeah
[14:48] <Laurenceb> good luck with the detector
[14:48] <Laurenceb> os it a scintillator?
[14:49] <nick_> yes
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[15:12] <SamSilver> I am off > thunderstorm moving my way
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[16:05] <W0OTM> K0HK-11 is aloft
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[16:22] <SamSilver> got wacked by beeg thunderstorm, hail and a strike on our lightning conductor.
[16:24] <Laurenceb> did you have any monsters to awaken?
[16:24] <Laurenceb> frankenstyle
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[16:25] <SamSilver> no but my dog went ape-shit
[16:26] <SamSilver> and i bet he wished could time travel to after the storm
[16:27] <SamSilver> bugger it's back
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[17:22] <SamSilver> there is a site that shows lightning strikes in your area, anyone got a link please
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[17:29] <russss> http://www.blitzortung.org/Webpages/index.php
[17:29] <SamSilver> thanx russss
[17:30] Nick change: navrac2 -> navrac
[17:31] <SamSilver> Bugger South Africa is not covered
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[17:36] <russss> ah I don't have any help there unfortunately
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[18:07] Nick change: Cadair -> Cadair_away
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[18:08] <Lunar_LanderU> hello
[18:08] <Lunar_LanderU> just a very quick question
[18:09] <Lunar_LanderU> I just was outside in the rain with my payload, the system inside my sparkfun cardboard box with the lid closed
[18:09] <Lunar_LanderU> the recording shows that the first four strings I got were at about 18°N and 37°W or something, however satellite count was 0
[18:09] <Lunar_LanderU> after that the position was OK again with 4 to 5 sats
[18:10] <Lunar_LanderU> is that bad?
[18:10] <Lunar_LanderU> if someone reads this, please answer, I can check it in the zeusbot logs
[18:10] <Lunar_LanderU> have to leave for the bus
[18:10] <Lunar_LanderU> thanks!
[18:11] <eroomde> it's neither good or bad
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[18:11] <eroomde> it's just what it looks like if you don;t have a lock
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[18:28] <navrac> yes - it is possible to get coordinates returned even if you dont have lock. This isnt unusual so dont worry
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[18:30] <eroomde> if you have anything in your software that makes positions according to position, then make sure you have a check in there to ensure the positions are valid
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[20:00] <Dan-K2VOL> hey upu
[20:01] <Upu> evening Dan
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[20:15] <navrac> quiet in here tonight
[20:16] <Upu> evening navrac
[20:16] <Upu> http://uk.farnell.com/micrel-semiconductor/mic5205-3-3ym5-tr/ic-ldo-150ma-3-3v-ln-sot23-5/dp/1663083 what about one of those to power a low noise RFM22B board
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[20:18] <navrac> I think any linear reg will be ok - but given the wide power range of the rfm I'm just going to stick 3V in and let it run
[20:18] <Upu> fair enough
[20:18] <navrac> its only the gps which flakes out at 2.5v
[20:18] <navrac> so might go with the 1.8v gps and regulate for that only
[20:19] <Lunar_Lander> hello
[20:19] <Upu> hi Lunar
[20:19] <Lunar_Lander> eroomde & navrac , thanks for your comments while I was away
[20:19] <Lunar_Lander> hi Upu
[20:19] <navrac> I've got the rfm to do 256baud which gives a useful extra bit of range on the rfm
[20:20] <navrac> and 125baud manchester - (which is 250baud really)
[20:20] <Upu> this using GFSK ?
[20:20] <navrac> yep
[20:21] <Upu> thought it would only go to 500
[20:21] <navrac> that was a rumour spread by me - as thats all the spreadsheet allowed
[20:21] <Upu> lol
[20:21] <navrac> but i worked it out with my own spreadsheet
[20:22] <navrac> i can get it to do 125baud gfsk - but its not ideal and doesnt resally work well
[20:23] <navrac> 250 is more sensitive
[20:23] <Upu> fair enough
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[20:24] <navrac> I tried it with a hastily made super j pole versus a quater wave - the difference was quite astounding
[20:25] <navrac> I was expecting 3dbdifference but was measureing 5-6db at an angle of 10 degrees
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[20:52] <fsphil> navrac: can you transmit with the rfm22b without it adding it's framing? thinking you could do 50 baud if you just repeated the bits 10 times (for the rfm's 500 baud mode)
[20:53] <navrac> well using external ook possible
[20:53] <fsphil> it's more for receiving though, which I suppose wouldn't work without the framing anyway
[20:54] <navrac> but i dont think you can using the internal fifos
[20:55] <jcoxon> ping Upu
[20:55] <Upu> hello
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[21:05] <navrac> 3 upu's?
[21:06] <Upu_M0UPU> can never have enough
[21:06] <Upu_M0UPU> it will die shortly
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[21:07] <Laurenceb_> there can only be oneeeeeee
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[21:07] <fsphil> upu's lost his head?
[21:07] Nick change: Upu_M0UPU -> Upu
[21:07] <Upu> just my internet
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[22:47] Nick change: Upu_M0UPU -> Upu
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[23:08] <Mark_> Hello All
[23:10] <fsphil> hiya Mark_
[23:11] <Mark_> How's it going fsphil?
[23:11] <fsphil> not to bad here Mark_, just tidying up the bench. you?
[23:12] <Mark_> In a hotel, just looking at the coding for UBlox GPS on the Arduino
[23:13] <fsphil> that's always fun
[23:13] <fsphil> weirdly, I wrote most of my current gps code in a hotel
[23:15] <Mark_> I understand almost all of the code, except the setting of the nav mode. I have read the spec for the UBlox and can see the various settings that can be applied. Not sure how uint8_t setNav[] = {0xB5, 0x62, 0x06, 0x24, 0x24, 0x00, 0xFF, 0xFF, 0x06, 0x02,..... relates to it
[23:15] <Mark_> I see that is an array holding some info
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[23:15] <griffonbot> Received email: "Re: [UKHAS] Re: Payload colour choice"
[23:15] <Mark_> How to translate the inidividual bits, etc setting the nav mode to flight etc
[23:17] <Mark_> Any idea where I can find some info to do some reading?
[23:17] <Upu> hey Mark
[23:17] <Upu> I'll show you
[23:17] <fsphil> that data is a ubx binary packet
[23:17] <Upu> https://secure.join.me/415-896-579
[23:18] <Upu> join that session and tell me when you're in
[23:18] <Upu> tell me when you can see my screen Mark_
[23:19] <Mark_> Hey thank you very much, yep I can see it!
[23:19] <Upu> ok
[23:19] <Upu> this is uCenter
[23:19] <Upu> it lets you play around with the various GPS settings
[23:19] <Upu> now
[23:19] <Mark_> Ok cool, yeah I have downloaded that
[23:19] <Upu> under CFG-NAV5
[23:19] <Upu> under UBX
[23:20] <Upu> thats where you set the nav mode
[23:20] <Upu> or dynamic model actually
[23:20] <Mark_> Ahh so you set it using this GUI
[23:20] <Upu> see the block of hex at the bottom
[23:20] <Mark_> Yep
[23:20] <Upu> thats the instructions you send via serial
[23:21] <Mark_> So just a case of copy/paste?
[23:21] <Upu> so thats where the numbers come from
[23:21] <Upu> yeah add a few 0x's and tidy up
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[23:21] <Upu> note that should match what you have on the code
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[23:21] <Mark_> Ah easy as that! I was over complicating thngs
[23:22] <Upu> you can work it out if you want
[23:22] <Upu> but its way easier to use uCenter
[23:22] <Mark_> Yeah defo
[23:22] <Upu> right bed time for me
[23:22] <Upu> night all
[23:22] <Mark_> Thanks very much for showing me
[23:22] <Upu> nps
[23:22] <Mark_> Byeee
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[23:26] <griffonbot> Received email: "Re: [UKHAS] Re: Payload colour choice"
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[00:00] --- Tue Oct 30 2012