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[00:55] <Steffanx> That's why the english shouldn't use old dutch/french words Arithmetic :P
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[04:28] <nigelvh> KT5TK1, KT5TK_QRL, you around?
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[07:42] <fsphil> is yorkshire launch still happening?
[07:42] <UpuWork> nah they don't have a parachute
[07:42] <UpuWork> I offered them a 36" sat here now
[07:42] <costyn> UpuWork: couldn't they have made their own?
[07:42] <daveake> Couldn't they buy one?
[07:42] <fsphil> wouldn't that be the second thing on their list of things to get a long time ago?
[07:43] <UpuWork> it didn't turn up on time
[07:43] <costyn> Royal Fail?
[07:43] <UpuWork> dunno
[07:43] <UpuWork> offered them a bright pink 36"
[07:43] <UpuWork> who could resist ?
[07:43] <costyn> who would turn down that?
[07:43] <mfa298> sounded a bit like they went for the slightly cheaper option of buying from outside the uk.
[07:44] <daveake> They could go with their 24". It's not as if there's anything in Yorkshire they should worry about hitting at 8m/s
[07:44] <UpuWork> not sure they would be launching anyway
[07:44] <UpuWork> weather is nasty
[07:44] <UpuWork> personally I'd go with the 24" given where they are launching and predicted landing
[07:44] <UpuWork> just leave the SPOT tracker on the ground
[07:44] <UpuWork> 90g saved job done
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[07:47] <fsphil> that have a spot?
[07:47] <fsphil> they*
[07:47] <UpuWork> or GSM
[07:47] <fsphil> it's grammer fail frequently
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[08:12] <kokey> cheaper option of buying outside the UK
[08:12] <kokey> that's an interesting concept
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[08:14] <griffonbot> Received email: John Graham-Cumming "Re: [UKHAS] First Launch - Sci1"
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[08:15] <nosebleedkt> http://www.konstantinos-choco.gr/slaros/
[08:15] <nosebleedkt> my tracking page
[08:15] <nosebleedkt> :P
[08:15] <nosebleedkt> wait 30s to load
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[08:19] <craag> nosebleedkt: Did you know you can iframe a filtered version of spacenearus?
[08:20] <nosebleedkt> lol
[08:20] <nosebleedkt> u tell me that now?
[08:20] <nosebleedkt> :P
[08:20] <craag> :P sorry
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[08:21] <fsphil> you didn't ask :p
[08:21] <craag> eg http://spacenear.us/tracker/embed2.php?filter=AVA
[08:22] <craag> I think you can do multiple callsigns for chase car as well, but can't work out how
[08:24] <craag> ah http://spacenear.us/tracker/embed2.php?filter=AVA;OM1AMJ_chase
[08:35] <nosebleedkt> well
[08:35] <nosebleedkt> what can i say
[08:36] <nosebleedkt> my platform is based on php/js/ajax/actionscript
[08:36] <nosebleedkt> and currently does what I wanted to do
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[08:40] <craag> nosebleedkt: Fair enough. I've built a custom map page myself with quicker refresh for higher baudrates https://www.thecraag.com/hab/
[08:40] <nosebleedkt> HA!
[08:40] <nosebleedkt> I like the course arrow
[08:40] <nosebleedkt> actually i thought the same thing to od
[08:40] <nosebleedkt> do*
[08:41] <nosebleedkt> but forgot it
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[08:42] <craag> well latest code is here incase you find it useful: https://github.com/thecraag/hab-panel/tree/xaben600
[08:43] <nosebleedkt> compass.css?
[08:43] <craag> (I modified it for the xaben 600 baud flight a few weeks ago.)
[08:43] <craag> The arrow is just an image rotated.
[08:44] <nosebleedkt> well, im at work right now. I bookmarked your git. I will find you here when I will code it in my site
[08:44] <nosebleedkt> thank you
[08:44] <craag> np
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[09:13] <eroomde> arko: !
[09:14] <eroomde> look what just arrived
[09:14] <eroomde> https://www.dropbox.com/s/d8nywpqq9645go7/2013-05-15%2010.12.13.jpg
[09:15] <UpuWork> those your GPS front end ?
[09:17] <eroomde> yus
[09:20] <UpuWork> very nice
[09:20] <fsphil> snazzy
[09:20] <arko> EROOMDE
[09:20] <mattbrejza> hey UpuWork, you reckon 6-7 days from mitch to your door?
[09:20] <arko> EPIC
[09:21] <arko> :D those look awesome
[09:21] <UpuWork> no mattbrejza
[09:21] <UpuWork> 9 days min normally
[09:21] <arko> Love the background
[09:21] <mattbrejza> oh ok
[09:21] <UpuWork> got one in 6 days which is really unusual
[09:21] <eroomde> arko: it's my mouse mat
[09:21] <UpuWork> but average is 9 can take 17 days I suspect customs hold them sometimes
[09:21] <arko> Haha
[09:22] <mattbrejza> hmm we shall see then
[09:22] <mattbrejza> we need teleporters
[09:23] <costyn> mattbrejza: yes
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[09:23] <mattbrejza> so i can get my boards quicker...
[09:23] <mattbrejza> (no other reason i can see for them)
[09:23] <costyn> mattbrejza: can you imagine how epic that would be... the world would change fundamentally
[09:23] <mattbrejza> lots of people would suddenly lose their jobs
[09:23] <costyn> yea
[09:23] <mattbrejza> how many people depend on transport to make a living
[09:24] <griffonbot> Received email: Alan Oakden "Re: [UKHAS] First Launch - Sci1"
[09:25] <griffonbot> Received email: Anthony Stirk "Re: [UKHAS] First Launch - Sci1"
[09:25] <costyn> UpuWork: I guess not
[09:25] <x-f> :/
[09:25] <UpuWork> No I guess not either :)
[09:25] <UpuWork> sat here on my desk :)
[09:25] <UpuWork> Question for Amerkur
[09:25] <costyn> or might've gotten lost in all the discussion on drag
[09:26] <UpuWork> 434Mhz is that considered ISM for you guys ?
[09:26] <UpuWork> says Region 1 only on Wikipedia
[09:27] <arko> eroomde: best of luck, those boards look great
[09:27] <arko> I'm out for the night its 2:30 :/
[09:28] <UpuWork> night
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[09:33] <mfa298> UpuWork: I asked that question a couple of weeks ago and the answer seemed to be that it was ISM (although I thought I'd seen similar stuff to you saying it wasn't)
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[09:35] <UpuWork> I could do with confirming it
[09:35] <mattbrejza> what country?
[09:36] <mfa298> I was just trying to grep my logs to see if I could find a reference of at least what was said.
[09:36] <mfa298> I'm pretty sure it's not ISM in canada so it's probably not a region 2 thing.
[09:37] <mattbrejza> but you can use it as amateur radio?
[09:38] <UpuWork> States
[09:38] <mfa298> I think the bit I was remembering is in http://habhub.org/zeusbot/logs_highlighted/highaltitude.log.20130503.html at 18:52
[09:39] <mfa298> [18:52] <nigelvh> 434 is an ISM band
[09:39] <mfa298> [18:52] <nigelvh> You can use that here
[09:39] <UpuWork> yes
[09:39] <UpuWork> I could do with some citation though
[09:39] <UpuWork> ping nigelvh
[09:40] <mattbrejza> could look at the FCC part 15 regs
[09:40] <mfa298> agreed citation is always good.
[09:41] <mfa298> probably worth having a page about ISM frequencies on the wiki at some point (like the arps page).
[09:45] <mattbrejza> http://transition.fcc.gov/Bureaus/Engineering_Technology/Documents/bulletins/oet63/oet63rev.pdf
[09:46] <UpuWork> 410-470 MHz
[09:46] <mattbrejza> yea but i dont think thats very muich power at all
[09:47] <Darkside> ISM bands aren't global
[09:47] <UpuWork> I know
[09:47] <Darkside> in australia it isn't even called an ISM band
[09:47] <Darkside> its called the LIPD class licence
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[09:47] <Darkside> low interference potential devices
[09:47] <mattbrejza> http://upload.wikimedia.org/wikipedia/commons/d/df/United_States_Frequency_Allocations_Chart_2011_-_The_Radio_Spectrum.pdf
[09:48] <UpuWork> it is an amateur band though isn't it ?
[09:48] <mattbrejza> yea
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[09:52] <OE1FEA> hello there :) is any HAB planned in the next few hours?
[09:53] <mfa298> Got to love some ebay sellers, they seem to be able to contradict themselves in two sentences for a simple BNC - RCA adapter.
[09:53] <UpuWork> hi OE1FEA not that I'm aware of
[09:55] <OE1FEA> tnx upuWork. Wasn't shure of postings in google griup
[09:55] <UpuWork> One was planned but cancelled
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[09:56] <OE1FEA> when the next start is planned? I'm also want to launch a HAB in this year and so I watch others ;)
[09:57] <UpuWork> I'm not sure there are a few planned in the next few weeks
[09:58] <OE1FEA> tnx again - i will have to watch .... bye bye from Vienna
[09:59] <mattbrejza> theres one from poland on sat (poentially)
[10:01] <OE1FEA> Is there a possibility to subscribe anywhere, so I don't miss a start?
[10:01] <mfa298> http://groups.google.com/group/ukhas
[10:01] <mattbrejza> http://habitat.habhub.org/calendar/
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[10:06] <OE1FEA> still subscribed to http://groups.google.com/group/ukhas, but there it is not easy th find the most accurate startings
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[10:08] <OE1FEA> http://habitat.habhub.org/calendar : with which windows programm I can view this calendar?
[10:08] <OE1FEA> or is there also a website, which views this calendar?
[10:09] <griffonbot> Received email: Alan Oakden "Re: [UKHAS] First Launch - Sci1"
[10:13] <craag> OE1FEA: If you use gmail, you can add the calendar file to that and it'll automatically update.
[10:14] <craag> I assume it'll also work with outlook and other calendars.
[10:18] <fsphil> hehe, http://www.bbc.co.uk/news/uk-england-devon-22536139
[10:21] <lz1dev> what has been described as "fairly unusual" weather for May.
[10:21] <lz1dev> haha
[10:22] <fsphil> there was frost on my car last night. it's summer, sheesh :)
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[10:26] <x-f> well, technically summer starts on 21st June :)
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[10:53] <craag> WUSAT 868MHz payload is in the RSGB newsletter
[10:54] <mfa298> x-f: I've seen other people state that summer starts at the beginning of may with 21st June being mid-summer's day
[10:59] <x-f> mfa298, i meant the astronomical summer, but for your latitude (and island) it may be the start of the meteorological summer in May
[10:59] <Arithmetic> summer may be sort of redefined as the climate goes chaotic from carbon emissions
[11:00] <Arithmetic> will be interesting to see what happens linguistically to the 'warmer weather' concept
[11:00] <mfa298> or at present summer might just get ignored
[11:02] <Arithmetic> agriculture and various practices humans are interleaved with now, correspond to seasonal and other notions with linguistic counterparts
[11:06] <x-f> come to the North, visit the Baltic states, we will have +26 on the weekend and next week, no rain, no clouds, remember to use sunscreen for UV protection :)
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[11:29] <griffonbot> Received email: Alan Oakden "Re: [UKHAS] First Launch - Sci1"
[11:44] <kokey> I usually expected it to be predictably warm in the UK from about 15 June onwards
[11:44] <kokey> but even that changed
[11:45] <kokey> I remember moving to the UK since after a hot two years between Johannesburg, Thailand and Singapore around the turn of the millenium, I thought I could do with something cooler
[11:45] <kokey> got to London, my first summer I got a tan and it went up to 36 degrees
[11:45] <kokey> all the shops sold out of fans
[11:45] <kokey> this was 2003
[11:46] <kokey> then that winter I thought I was being clever and bought myself an aircon cheap on ebay and the next summer I was like 'Bring it on!'
[11:46] <kokey> I ended up needing to use the aircon for only two days
[11:46] <SpeedEvil> hah
[11:47] <kokey> but then the next year, 2004, it also hit 36 degrees
[11:47] <SpeedEvil> I have this awesome air con that ensures it dpesn-t get too hot.
[11:47] <SpeedEvil> it's called Scotland.
[11:47] <kokey> actually we booked somewhere around Brecon beacons for the weekend of 16 June since we thought we can't rely on the weather and that part of wales is still quite nice in the rain
[11:48] <kokey> it was so hot and sunny that day that we had to stop the car and find some shade to hide under
[11:48] <kokey> SpeedEvil: yeah I should have just stuck it out in Edinburgh when I went that way
[11:48] <fsphil> SpeedEvil: more con than aircon? :)
[11:49] <eroomde> https://www.dropbox.com/s/znxeaixm3xlpzbi/2013-05-15%2012.45.25.jpg
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[11:50] <Laurenceb> nice
[11:51] <mattbrejza> that didnt take long :P
[11:51] <SpeedEvil> nice!
[11:51] <SpeedEvil> eroomde: just raw sample bits out?
[11:52] <Laurenceb> does it connect to FPGA or some kind of usb interface?
[11:53] <eroomde> yes lunch bbiab
[11:53] <eroomde> https://www.dropbox.com/s/ff9v02f3hcjvneu/2013-05-15%2012.52.11.jpg
[11:53] <eroomde> fpgaq board
[11:54] <Laurenceb> oh thats neat
[11:54] <Laurenceb> its a "standard" dev board connector
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[11:54] <SpeedEvil> wide connector is wide
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[11:55] <zyp> Laurenceb, xilinx pmod IIRC
[11:56] <Laurenceb> need to try my F4 idea :-/
[11:56] <Laurenceb> no time for this stuff atm
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[11:57] <Laurenceb> but you couldnt interface that maxim front end with stm32
[11:57] <Laurenceb> i have skyworks front ends that will do spi
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[12:12] <domlin> HEY GUIYS
[12:13] <UpuWork> HAI
[12:13] <jonsowman> hello
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[12:15] Action: fsphil waves
[12:20] <domlin> how is everyone?
[12:25] <domlin> :)
[12:28] <fsphil> quiet it seems :)
[12:28] <fsphil> all good here, how's you?
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[13:24] <Laurenceb> http://www.youtube.com/watch?feature=player_embedded&v=8L8UCfxmtSw
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[13:36] <eroomde> that's quite impressive
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[13:42] <fsphil> maaad
[13:42] <fsphil> top comment is great
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[13:49] <Laurenceb> grrr
[13:49] <Laurenceb> bearded theory are pumping out awful noise already
[13:50] <Laurenceb> 4 more days of this :(
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[14:42] <nigelvh> ping Upu, UpuWork
[14:42] <Upu> hey nigelvh
[14:42] <nigelvh> What's up?
[14:43] Action: Upu checks
[14:43] <Upu> still the sky fortunately
[14:43] <nigelvh> That's good.
[14:43] <UpuWork> got the mail thx
[14:43] <nigelvh> Excellent
[14:43] <nigelvh> Look to be in good shape?
[14:43] <UpuWork> indeed
[14:44] <nigelvh> Also excellent.
[14:44] <UpuWork> looks neat going to read the manual tonight
[14:44] <nigelvh> Yeah, it's a little long, but that's partly due to the photos.
[14:44] <UpuWork> no its good
[14:45] <nigelvh> Also you'll see if you don't want to run the software, you can just run it over serial as well.
[14:45] <UpuWork> website up ?
[14:45] <nigelvh> Yep
[14:45] <UpuWork> hmm
[14:46] <nigelvh> Having trouble resolving?
[14:46] <UpuWork>
[14:46] <nigelvh> Yep
[14:46] <UpuWork> doesn't load here or at home
[14:47] <nigelvh> That's odd...
[14:47] <nigelvh> Try again if you might. I'm watching the log.
[14:48] <UpuWork> oh loaded this time
[14:48] <nigelvh> Ok. Well, I'm not sure what the deal was then.
[14:48] <nigelvh> As long as it's working.
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[14:49] <UpuWork> ok cool I'll see if I can get time to build it up over the next few days cheers
[14:49] <nigelvh> And thank you for taking the time.
[14:50] <UpuWork> welcome
[14:54] <nigelvh> Alright, off to work for me. On in a bit.
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[15:30] <chrisstubbs> Raspberry pi has done one again
[15:30] <chrisstubbs> even using my backed up image, need to wait for the new memory card :(
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[15:41] <fsphil> anyone got the camera yet?
[15:42] <fsphil> (other than daveake)
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[15:44] <chrisstubbs> fsphil, I nearly got one yesterday
[15:44] <chrisstubbs> but the eyetoy works, and wont cost me anything :P
[15:45] <fsphil> yes free is an excellent price
[15:45] <chrisstubbs> i think farnell has sold out?
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[15:45] <fsphil> I think I got in early enough, showing as despatched
[15:45] <chrisstubbs> oh no 779 in stock
[15:46] <fsphil> ah. not the rush of the Pi launch then
[15:46] <chrisstubbs> they were out when i checked yesterday
[15:46] <chrisstubbs> out of stock i mean
[15:47] <fsphil> RS where only registering interest
[15:47] <chrisstubbs> Did you see the BBR report?
[15:48] <chrisstubbs> BBC rather
[15:48] <mfa298> looks to be in stock if you go via the rs business site rather than personal user.
[15:48] <fsphil> did
[15:48] <mfa298> I obviously failed. I bought a new pi from RS yesterday but didn't think to check for cameras
[15:49] <fsphil> I'd love an analogue video > pi adaptor that isn't USB
[15:49] Nick change: DrLuke__ -> DrLuke
[15:49] <mfa298> Had excellent service though. Ordered at 1830 and delivered by parcelfarce at 0830 the following morning (and didn't ask for pre-anything delivery)
[15:52] <cm13g09> mfa298: lol
[15:52] <chrisstubbs> It was the quality of the photos on here that put me off: http://bbc.in/16zNiNs
[15:53] <Laurenceb> lol
[15:53] <Laurenceb> those are a bit fail
[15:54] <chrisstubbs> I'm not too sure about that Rory Cellan-Jones guy
[15:54] <cm13g09> chrisstubbs: well said
[15:54] <cm13g09> me neither
[15:55] <chrisstubbs> The way he uses programme instead of program puts me off too
[15:55] <chrisstubbs> he could well have a programme on his desktop
[15:56] <chrisstubbs> thats probably why it didnt work
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[15:57] <cm13g09> chrisstubbs: programme of what to say, perhaps?
[15:57] Action: cm13g09 goes into uni
[15:58] <chrisstubbs> I'm not one to comment, my grammar is pretty bad
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[16:22] <anerDev> hi guys
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[16:46] <anerDev> anyone ?
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[16:49] <lz1dev> anerDev: hello
[16:49] <anerDev> hello
[16:50] <craag> hello
[16:51] <SpeedEvil> hello
[16:54] <lz1dev> anerDev: you want to ask something?
[16:54] <anerDev> yes
[16:55] <lz1dev> shoot
[16:55] <anerDev> I use iOs and there is an app for make my device into rtty modem
[16:55] <anerDev> but for android there is: HAB Modem and Tracker
[16:55] <anerDev> but isn't compatible with bluetooth stack
[16:55] <anerDev> but what device are compatible ?
[16:56] <lz1dev> i havent heard of an app for the iphone
[16:56] <mattbrejza> you have to use the line in for the android app
[16:57] <mattbrejza> via the 3.5mm jack (if it exists)
[16:57] <lz1dev> it is kinda strange that it requires bluetooth
[16:57] <mattbrejza> http://ukhas.org.uk/projects:hab_modem
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[18:06] <griffonbot> @headfullofair: RT @steamfire: I have been studying balloons for 10 years, yet I STILL misspell bouyancy. ;-) Always A-OK on polyethylene terephthalate tho& [http://twitter.com/headfullofair/status/334731535842410497]
[18:14] <arko> apparently i need to visit holland
[18:14] <arko> http://www.youtube.com/watch?v=hqEh0iFWlgs
[18:16] <jarod> http://www.youtube.com/watch?v=q40NBjUelwU&hd=1 - Boeing 747-87UF 2013-05-15 at FL300
[18:16] <jarod> fast ballon :)
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[18:34] <Lunar_Lander> hello
[18:34] <fsphil> yes
[18:35] <fsphil> we consulted the experts on this issue, and it turns out yes
[18:35] <arko> you know what i think you may want to revisit this
[18:36] <arko> the case studies really dont coorilate with the data
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[18:37] <x-f> the case was a lie
[18:37] <daveake> Some words don't correlate with correlate :p
[18:37] <mfa298> i thought the answer was 42
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[18:38] <arko> coorelate* heh
[18:38] <daveake> Sorry, I can't help myself sometimes :)
[18:39] <arko> i dont blame ya
[18:39] <daveake> <explodes> :)
[18:40] <x-f> arko, one o, two r's, please
[18:43] <Lunar_Lander> today I got a question for the pico people
[18:43] <fsphil> whats all this fuss about?
[18:43] <Lunar_Lander> what are your favourite ways to power a 3.3V payload?
[18:43] <fsphil> pico people?
[18:43] <daveake> battery
[18:43] <Lunar_Lander> people who launched pico balloons
[18:43] <mattbrejza> hydrogen fuel cell
[18:43] <Lunar_Lander> yeah I figured that you don't send up a petrol generator
[18:43] <Lunar_Lander> thank you very much
[18:44] <Lunar_Lander> xD
[18:44] <fsphil> borrowers could do manned launches really easy
[18:44] <fsphil> well, borrowered launched
[18:44] <fsphil> -ed
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[18:47] <daveake> what is the world coming to ... http://www.bbc.co.uk/news/uk-england-norfolk-22542222
[18:50] <chrisstubbs> Haha
[18:50] <fsphil> they're just lucky the Firefly fan club wasn't there
[18:52] <mfa298> or the trekkies
[18:53] <chrisstubbs> :D got the UBX ACK response code working in python
[18:54] <chrisstubbs> note to self, characters != integers :P
[18:54] <chrisstubbs> at least it was an easy solution once I thought about it
[18:56] <Lunar_Lander> hi chrisstubbs
[18:57] <chrisstubbs> Evening lunar
[18:57] <fsphil> last time I did that sort of thing in python I used a byte array
[18:58] <fsphil> fetch the data as a string then convert it
[18:58] <fsphil> which seems wasteful
[18:59] <chrisstubbs> Ah I stored there expected packet as an integer array and converted the reply bytes to their decimal ascii value for comparison
[18:59] <chrisstubbs> I didnt expect to get this working, so I'm happy :)
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[19:05] Nick change: bertrik_ -> bertrik
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[19:23] <WILLdude> Hello
[19:24] <eroomde> hi WILLdude
[19:24] <eroomde> how are tricks?
[19:26] <WILLdude> Tricks?
[19:29] <eroomde> things
[19:29] <eroomde> and stuff
[19:30] <Upu> evening Mr Dude
[19:30] <Upu> how your tracker coming along ?
[19:31] <WILLdude> It's not really.
[19:31] <WILLdude> I've got sidetracked with other stuff.
[19:31] <Upu> anything interesting ?
[19:31] <WILLdude> BTC?
[19:31] <Upu> btc ?
[19:31] <WILLdude> Bitcoin
[19:32] <Upu> I wouldn't bother if I was you
[19:32] <WILLdude> nah.
[19:32] <WILLdude> I bought 0.1
[19:32] <WILLdude> Just to play with.
[19:32] <WILLdude> I'm investing it.
[19:32] <Upu> just a big ponzi scheme
[19:33] <WILLdude> https://en.bitcoin.it/wiki/Myths#It.27s_a_giant_ponzi_scheme
[19:33] <WILLdude> Lol
[19:33] <WILLdude> IDK much about the inner workings of it all.
[19:33] <Upu> whatever
[19:33] <WILLdude> :)
[19:33] <GadgetDroid> Upu: parcel arrived, thanks.
[19:33] <WILLdude> Yeah, I might give up on bitcoin.
[19:34] <Lunar_Lander> hello
[19:34] <Upu> oh hey Gadget-Mac
[19:34] <Upu> before I forget those PCB's have an error on the silkscreen
[19:34] <WILLdude> Cause I think I need to focus on staying alive before I worry about anything else.
[19:34] <Upu> so just connect RX to RX and TX to TX
[19:34] <Upu> rather than RX to TX etc
[19:34] <Lunar_Lander> Upu, soldered up the new GPS
[19:34] <Lunar_Lander> thanks again
[19:34] <Lunar_Lander> :)
[19:34] <Upu> welcome Lunar
[19:35] <Lunar_Lander> got a question on pico power supplies
[19:35] <Lunar_Lander> what do you suggest for these?
[19:35] <Lunar_Lander> for a 3.3V system
[19:35] <Upu> staying alive ? Thats easy isn't it ? Keep sucking the air in, eat drink and sleep
[19:35] <Lunar_Lander> xD
[19:35] <Upu> depends how you want to power it Lunar
[19:35] <Lunar_Lander> yea that is the thing
[19:35] <Lunar_Lander> lipoly? coin cells?
[19:35] <WILLdude> Upu: When you don't really feel like doing so, it's harder.
[19:36] <Lunar_Lander> are the 3.7V from the lipoly enough for a 3.3V regulator
[19:36] <daveake> depends
[19:36] <Upu> yeah just ensure its a very LDO
[19:36] <Upu> 250mV one
[19:36] <Upu> not much overhead
[19:37] <Upu> how to Lipos discharge ?
[19:37] <Upu> to=do
[19:37] <Lunar_Lander> LDO is that protection circuit?
[19:38] <zyp> no
[19:38] <KT5TK_QRL> Lunar: Use a TPS61201
[19:38] <Lunar_Lander> ah the reg
[19:38] <Lunar_Lander> datasheet says "LOW DROPOUT VOLTAGE (1V TYP.)"
[19:38] <daveake> too high
[19:38] <WILLdude> Pffffft
[19:38] <Upu> LDO = low drop out
[19:38] <Upu> so Lunar
[19:38] <Upu> if you put 3.7V in that
[19:38] <daveake> "Low" varies
[19:38] <Upu> you get 2.7V out
[19:38] <KT5TK_QRL> If you don't want to solder that small, use the breakout board from sparkfun
[19:38] <Lunar_Lander> ah
[19:38] <Upu> some of the very very low ones have a drop off 250mV
[19:38] <Lunar_Lander> ah
[19:38] <Lunar_Lander> one moment KT5TK1
[19:39] <Upu> so 3.3 + 0.25 = 3.55
[19:39] <Lunar_Lander> yea
[19:39] <Upu> which is very close to 3.7 of the cell so as it discharges and the voltage goes down things stop working
[19:39] <Lunar_Lander> yea
[19:39] <daveake> Your 3.7V battery will not be 3.7V all the time
[19:39] <daveake> Check the discharge curve
[19:39] <KT5TK_QRL> https://www.sparkfun.com/products/10255
[19:40] <daveake> And then check to see what happens when it's cold
[19:40] <Upu> yeah that board KT5TK is the same step up regulator I use
[19:40] <Lunar_Lander> thanks KT5TK_QRL found it a second ago
[19:41] <Lunar_Lander> daveake, yeah, there is some sort of initial drop
[19:41] <Lunar_Lander> at least in the energizer lithiums
[19:41] <daveake> All batteries drop voltage with use
[19:41] <daveake> You need to check the curve for the type you intend to use
[19:41] <Lunar_Lander> yeah
[19:41] <Lunar_Lander> one moment
[19:43] <Lunar_Lander> ok
[19:43] <Lunar_Lander> the sparkfun lipoly has no curve in the datasheet :(
[19:44] <Lunar_Lander> well
[19:44] <Lunar_Lander> thanks for the link KT5TK_QRL
[19:44] <Lunar_Lander> 200 mA for Upu's GPS, an atmega328 and a microSD slot
[19:44] <Lunar_Lander> should be OK
[19:44] <Lunar_Lander> will try it with the lab supply first though
[19:44] <Upu> 200mA ?
[19:44] <Lunar_Lander> the booster says "3.3V @ 200mA max"
[19:45] <Lunar_Lander> you could use the 5V and put a reg behind it, but does that make sense?
[19:46] <KT5TK_QRL> The booster is enough to drive all that above plus a RFM22
[19:47] <WILLdude> Upu: I've also got a relay board, might try to modify my lamp.
[19:48] <Lunar_Lander> thanks KT5TK_QRL
[19:48] <KT5TK_QRL> You should do energy saving features in the software though
[19:49] <KT5TK_QRL> Like switching off the transmitter when not in use etc.
[19:49] <WILLdude> Well, to add an arduino
[19:49] <WILLdude> AFK trumpet practice :) and homework :(
[19:49] <Upu> enjoy !
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[19:55] <Gadget-Mac> Upu: You had mentioned it previously.
[19:55] <Upu> just checking
[19:55] <Gadget-Mac> Tinkering at the weekend I think
[19:55] <Gadget-Mac> Depends if I get chance to hook it all up before going to bed
[19:56] <Lunar_Lander> KT5TK_QRL, yeah
[19:56] <Lunar_Lander> btw this system has no radio :)
[19:56] <Lunar_Lander> it is a sub-payload on another balloon
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[20:04] <KT5TK_QRL> A sub payload shouldn't prevent you from transmitting some telemetry now and then
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[20:17] <Lunar_Lander> KT5TK_QRL, yea
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[20:44] <chrisstubbs> Upu, I'm getting carried away with eagleUp http://flic.kr/p/ejsfVV
[20:49] <chrisstubbs> shame it cant render my messy soldering ;)
[20:52] <Lunar_Lander> hm
[20:52] <Lunar_Lander> there is no macroscopic chip that matches the performace of TPS61201
[20:52] <Lunar_Lander> seems to be
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[20:55] <WILLdude> Hello again.
[20:56] <chrisstubbs> WILLdude, the robot arm is back up to full price :(
[20:57] <WILLdude> Haha. Never mind.
[20:57] <WILLdude> I'm saving up for maybe getting a pc.
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[20:57] <WILLdude> I did just waste 15 quid on bitcoin.
[20:57] <WILLdude> My parents won't find out hopefully. :(
[20:58] <Randomskk> waste?
[20:58] <Upu> do you have any bitcoins atm ?
[21:00] <lz1dev> i thought the current going price for bitcoins is around 200$
[21:00] <WILLdude> I have well 0.1 which are yet to be paid.
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[21:00] <WILLdude> I have 0.0425 worth of shares.
[21:01] <WILLdude> 0.014 in a lost transaction.
[21:01] <WILLdude> (didn't pay fees)
[21:02] <WILLdude> Will never get processed.
[21:02] <Randomskk> if it's not been processed isn't the money still yours?
[21:02] <WILLdude> Well, not confirmed.
[21:03] <WILLdude> And I have 0.002 in a wallet.
[21:04] <WILLdude> Not completely wasted I guess.
[21:04] <WILLdude> I get about 12p a week in dividends from the shares.
[21:04] <Randomskk> shares in what?
[21:05] <WILLdude> https://www.havelockinvestments.com/fund.php?symbol=ASICM
[21:06] <Randomskk> huh
[21:06] <Randomskk> cool
[21:07] <Laurenceb__> http://en.wikipedia.org/wiki/File:B-36_tracked_gear_edit.jpg
[21:07] <Laurenceb__> ^lol
[21:12] <Lunar_Lander> Upu, I actually just found a 250mV LDO reg at farnell
[21:12] <Lunar_Lander> :)
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[21:30] Nick change: Arithmetic -> AdmiralObvious
[21:31] Nick change: AdmiralObvious -> Guest12201
[21:31] Nick change: Guest12201 -> Arithmetic
[21:40] <SpeedEvil> sigh.
[21:40] <SpeedEvil> Kepler's dead
[21:41] <SpeedEvil> thought that was coming, the wheel had been dodgy for a bit
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[21:43] <Lunar_Lander> the Kepler satellite is shut down?
[21:44] <SpeedEvil> well, not doing science
[21:44] <SpeedEvil> and looking like it won't be in the future
[21:44] <SpeedEvil> or what it does will be extremely limited
[21:44] <Lunar_Lander> yea
[21:44] <Lunar_Lander> because it cannot be steered anymore?
[21:44] <Lunar_Lander> if wheel means reaction wheel
[21:45] <SpeedEvil> yep
[21:45] <Lunar_Lander> that's sad
[21:45] <SpeedEvil> unfortunately, the cameras are very 'cooked' - you can't get raw data out of them and do later clever processing on the ground
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[21:46] <Lunar_Lander> oh
[21:50] <Lunar_Lander> OK people
[21:50] <Lunar_Lander> can you draw some 100 mA from coin cells
[21:50] <Lunar_Lander> ?
[21:51] <eroomde> probably 100 coinc ells
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[21:55] <concretedog> just popped in to say thanks to Upu as my ntx2 arrived safe and sound yesterday, if you see this...cheers sir
[21:55] <chrisstubbs> hah Matsushita batteries
[21:55] <Upu> more than welcome concretedog
[21:58] <Willdude123> Hello
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[21:59] <concretedog> bit busy this week...but watch out next week for some newbish questions probably as tackle the link arduino to radiometrix tutorial!
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[22:02] <lz1dev> q
[22:03] <Belleas> hi guys, right, so i have the arduino board, the ntx2 (thanks to Upu :) ), connected them and tested it with a SDR dongle (just sending the pings at the moment). Does anyone have an antenna they recommend?
[22:04] <Willdude123> Well.
[22:04] <Willdude123> There are 2 types of antenna.
[22:04] <Willdude123> Well
[22:04] <Willdude123> That's a lie.
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[22:04] <Belleas> Concretedog ... good luck but you should be fine. the tuturial is really well written :)
[22:04] <Willdude123> Actuallyt.
[22:04] <Belleas> lol
[22:04] <mattbrejza> you dont need any sort of antenna for testing
[22:04] <mattbrejza> for tracking over peoples a colinear is generally used
[22:04] <Willdude123> There are directional and omnidirectional, not really types but ho hum.
[22:04] <mattbrejza> *other
[22:05] <mattbrejza> and for chasing a magmount whip
[22:06] <Upu> yeah you don't need an antenna but you can just stick a piece of wire in there, 164mm if you want to be correct
[22:06] <Willdude123> Upu: Attending a local radio rally in a month or so.
[22:07] <Belleas> yeah, im good with the testing but wanted to know what people used on a live run?
[22:07] <Upu> oh cool Willdude123
[22:07] <Upu> 1/4 wave antennas Belleas
[22:08] Nick change: heathkid|2 -> heathkid
[22:08] <concretedog> Belleas: Yeah the tutorial looks great...just waiting for my realtek tv dongle for sdr to turn up from far east...sounds like you're doing well a bit further down the proccess than me
[22:08] <Belleas> so would this one be any good? http://www.ebay.co.uk/bhp/1-4-wave-antenna
[22:08] <Willdude123> You could make one :-)
[22:09] <Belleas> which is a whip as mattbrejzasuggested :)
[22:09] <Upu> no don't buy one :)
[22:09] <Belleas> lol
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[22:09] <Belleas> right, any decent guides on making one?
[22:09] <Willdude123> Upu
[22:09] <Upu> http://farm4.static.flickr.com/3571/3380699167_879ac89b40.jpg
[22:09] <Willdude123> He's the best guide.
[22:09] <Upu> hang on see if I can find a btetter pic
[22:09] <Belleas> ive just got my head around the c code lol
[22:11] <Belleas> ok, thanks upu
[22:12] <concretedog> that a cool 1/4 wave, clever using the chassis mount screws for the ground planes...I might have a go at one of them
[22:12] <Belleas> i must admit though, making the tracker was great fun
[22:12] <Upu> ok for a 1/4 wave you just need some coax and some radials
[22:12] <Upu> which can just be the center of the coax
[22:12] <Upu> http://imgur.com/7YG1EiB
[22:12] <Upu> thats using some beefy connectors and cooper
[22:12] <Upu> doesn't need to be anything like that for a payload, generally I make them out of 5 pieces of single core wire
[22:13] <Upu> use straws for support
[22:13] <Upu> they are 164mm long each
[22:13] <chrisstubbs> Typical day at the office Upu? ;)
[22:13] <Upu> yup :)
[22:13] <eroomde> 165mm long causes the oceans to drain so be careful
[22:13] <Upu> yes what eroomde said
[22:14] <eroomde> we knew a guy once
[22:14] <eroomde> never saw him after he made that aerial
[22:14] <chrisstubbs> The Got the chip antennas ok btw, cheers for that!
[22:14] <Belleas> lol
[22:14] <Upu> https://plus.google.com/photos/118244444241111963790/albums/5851582788244965537/5851585735792125522?banner=pwa&pid=5851585735792125522&oid=118244444241111963790
[22:14] <Upu> thats one made for a very small payload out of the inside of cat 5 cable
[22:15] <Upu> the green element points down when its in the air
[22:15] <Upu> https://plus.google.com/photos/118244444241111963790/albums/5851143941313777297/5851143977886388946?banner=pwa&pid=5851143977886388946&oid=118244444241111963790
[22:15] <Upu> and thats one Daveake made
[22:17] <heathkid> I'm incredibly impressed with the Energizer Ultimate Lithiums!
[22:18] <heathkid> first time I've tested with them...
[22:18] <Belleas> ive made the arduino / ntx2 tracker, that should be ok for a flight right?
[22:18] <Upu> you may want a GPS on there
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[22:18] <Belleas> any suggestions on GPS modules? or out of the box ones?
[22:19] <eroomde> out of the ublox ones
[22:19] <eroomde> baddum ching
[22:19] <eroomde> i am not in helpful mode sorry
[22:19] <Upu> ublox generally
[22:19] <Upu> http://ava.upuaut.net/store/index.php?route=product/category&path=59_60
[22:19] <Upu> work at altitude well proven
[22:19] <Upu> :)
[22:19] <eroomde> pff
[22:19] <Upu> yes my shop other GPS modules are availble
[22:20] <eroomde> but not other shops
[22:21] <Upu> :)
[22:22] <Belleas> ok, wicked thanks. im fairly new to the arduino and code. any guides on that? lol
[22:24] <chrisstubbs> Belleas, http://ava.upuaut.net/store/wiki/doku.php?id=frontpage:levelconvertor
[22:24] <chrisstubbs> upu the link is dead on your store page for the 5v breakout
[22:25] <Upu> sure ?
[22:25] <Upu> http://ava.upuaut.net/store/index.php?route=product/product&path=59_60&product_id=68
[22:25] <chrisstubbs> I get "This topic does not exist yet"
[22:26] <Belleas> a
[22:26] <Belleas> ah, cracking
[22:26] <Upu> http://ava.upuaut.net/store/wiki/doku.php?id=frontpage:levelconvertor ?
[22:26] <chrisstubbs> that one works, the store link seems to be missing the frontpage: bit
[22:27] <chrisstubbs> http://ava.upuaut.net/store/wiki/doku.php?id=levelconvertor
[22:27] <Upu> ah thanks Cadair
[22:27] <Upu> doh
[22:27] <Upu> chrisstubbs
[22:27] <Upu> I'll fix that tomorrow
[22:28] <Upu> past my bed time night all
[22:28] <chrisstubbs> haha same
[22:28] <chrisstubbs> night!
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[22:29] <Belleas> laters guys, thanks for the help
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[22:36] <Lunar_Lander> well how did someone say it
[22:36] <Lunar_Lander> if you are working with physics it's like playing poker
[22:36] <fsphil> "it"
[22:37] <fsphil> like that
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[22:37] <Lunar_Lander> but physics always will have a Royal Flush
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[22:41] <fsphil> I'm pretty sure the universe has a cheat code
[22:42] <fsphil> I tried all the usuals though .. down up right right left fire
[22:42] <fsphil> didn't work
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[22:46] <Arithmetic> i thought it was only my physics type friends who paid a lot of attention to poker and markets and that sort of thing. von neumann i just heard was into watching poker games in berlin or something though, wasn't he
[22:48] <Lunar_Lander> good question
[22:48] <Lunar_Lander> but what scientists don't do I think is playing lotto
[22:48] <Lunar_Lander> as the chances are slimmer than slim
[22:49] <fsphil> a tax for people bad at math
[22:50] <Lunar_Lander> yea
[22:50] <Lunar_Lander> btw did you hear that we in germany had a lotto error for the first time since 60 years or so?
[22:50] <Lunar_Lander> I think three of the 49 balls were stuck in the starting rack
[22:50] <SpeedEvil> I bought a ticket once, just in case a passing deity was feeling grateful
[22:51] <Lunar_Lander> and the lawyer guy didn't notice it for some strange reason
[22:51] <Lunar_Lander> so the drawing was done and cancelled later
[22:51] <Lunar_Lander> that guy must have been sleeping or so
[22:51] <Lunar_Lander> the whole control room must have been sleeping
[22:51] <Lunar_Lander> the machine is made of perspex and you can see everything
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[23:59] <heathkid> again... Energizer Ulitmate Lithium's.... = WOW!
[00:00] --- Thu May 16 2013