highaltitude.log.20120829

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[00:05] <costyn> natrium42: it wasn't Tim, it was the Belgians, Peter somthing
[00:06] <costyn> the HOWEST team
[00:36] <costyn> http://elit.howest.be/weerballon.aspx in Dutch though
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[01:08] <DrLuke> http://vimeo.com/48399328 - Germany, a through and through peaceful country
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[02:28] <Burninate> If you have a parachute, it's plausible to make a skyhook recovery
[02:29] <Burninate> over saltwater, over anything
[02:36] <Burninate> Alternately, make it float and have a satellite modem give telemetry every so often
[02:40] <Burninate> or fly a solar powered boat
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[07:42] <griffonbot> Received email: MikeB "Re: [UKHAS] Launch Announcement - XABEN-33"
[07:51] <costyn> Burninate: still happens regularly here in NL too, where they find an old WWII bomb which has to be "taken care of"
[08:12] <griffonbot> Received email: Steve Aerospace "Re: [UKHAS] Launch Announcement - XABEN-33"
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[08:17] Action: Penfold hrms. wonders if he can get his SDR workinhg enough by then.
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[08:29] <Gadget-Work> Yay, SDR USB modules have arrived
[08:30] <Penfold> :D
[08:30] <Penfold> whaddya get? :D]
[08:31] <Gadget-Work> A couple of newsky sticks
[08:31] <Gadget-Work> Which appear to have E4000 tuners :)
[08:31] <Penfold> *nod* Funny that, So's the one I got off Amazon. :D
[08:32] <Penfold> currently building (or attempting to) gr-baz on ubuntu
[08:32] <UpuWork> check they have the ESD diode Gadget-Mac
[08:32] <Penfold> aha.
[08:32] <Penfold> and deciding I don't need to bother, just found https://launchpad.net/~roman-moravcik/+archive/gnuradio/+build/3532778
[08:33] <Gadget-Work> UpuWork, details ?
[08:33] <UpuWork> do you still have it open ?
[08:33] <Gadget-Work> Nope.
[08:34] <UpuWork> ok 1 sec
[08:34] <Gadget-Work> Well, at least I know the seller wasn't telling lies
[08:35] <UpuWork> https://dl.dropbox.com/u/63720513/Images/HAB/HAB%20Filter/IMG_0693.JPG
[08:35] <UpuWork> ok
[08:36] <UpuWork> see by the TV connector
[08:36] <UpuWork> there are 3 pads on each dongle with nothing on them ?
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[08:38] <RocketBoy> hey Penfold
[08:38] Action: Penfold compares to
[08:38] <Penfold> http://ecx.images-amazon.com/images/I/7193wsGpQiL._AA1500_.jpg
[08:38] <Penfold> heya!
[08:39] <UpuWork> yeah that one has ESD on it Penfold
[08:39] <RocketBoy> see you wend down the USB dongle route
[08:39] <UpuWork> is that the Lego version ?
[08:39] <Penfold> UpuWork: grin
[08:39] <UpuWork> get yourself a HABAmp to go with it
[08:39] <Penfold> RocketBoy: yeah. just yakshaving enough to get it working somewher eaway from interference sources
[08:39] <UpuWork> I've ordered some more PCB's
[08:39] <Penfold> which seems to require upgrading my home server to ubuntu 12, which was sort of due anyway :D
[08:41] <RocketBoy> yeah - that sort of thing is always the way with a job
[08:41] <Penfold> UpuWork: unfortunately, most of the RF crap near me is self inflicted 70cm band wireless senders for power usage/weather station
[08:41] <Penfold> :D
[08:42] <UpuWork> yeah not going to help, directional antenna ?
[08:42] <Penfold> Moxon on the cards sometime
[08:42] <Penfold> todolist a mile long, unfortiunately :D
[08:44] <Penfold> certainly getting the antenna up and the other end of the house is a start
[08:44] <Penfold> helps that we're mostlt foot+ thick solid stone, none of your modern rubbish.
[08:44] <daveake> This is mine - http://i.imgur.com/0uOv4.jpg
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[08:44] <UpuWork> :)
[08:44] <Penfold> daveake: I wish :D
[08:45] <daveake> No, that's the one that gets done, not the real one :D
[08:46] <Gadget-Work> UpuWork, Ok, looks like there's just a capacitor on the trace from the antenna to the E4000
[08:47] <UpuWork> take picture Gadget-Mac and link it
[08:48] <Penfold> http://www.amazon.co.uk/gp/product/B008CQKA0O/ref=oh_details_o00_s00_i00 <- picked up what appears to have been tyhe last of these
[08:48] <UpuWork> There will be less and less with Elonics Tuners in
[08:49] <UpuWork> but for HAB stuff you don't need the E4000
[08:49] <Penfold> *headdesks* *attempts to teach IT here to READ*
[08:50] <Gadget-Work> UpuWork, will try and get some decent pictures tonight
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[08:58] <UpuWork> ok Gadget-Mac
[08:58] <UpuWork> if its missing the diode I can post you some out if you're comfortable soldering it on
[08:58] <UpuWork> but don't plug it into a big antenna until you get one on there
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[08:58] <UpuWork> or you'll do what I did and fry the dongle
[08:58] <Penfold> ooops
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[09:13] <Gadget-Work> UpuWork, not sure there's anywhere for a diode :(
[09:13] <UpuWork> there will be
[09:13] <UpuWork> if not it I'm sure I can make it fit :)
[09:13] <UpuWork> take a decent pic
[09:13] <UpuWork> I'll tell you
[09:14] <UpuWork> I'd make some pads with a scalpel
[09:14] <Penfold> *grin*
[09:14] <UpuWork> wouldn't be the first time :)
[09:14] <Gadget-Work> UpuWork, diode goes how in the circuit ?
[09:15] <UpuWork> links the RF in to ground
[09:15] <Gadget-Work> UpuWork, ok here's a pic from the seller https://cosycave.co.uk/extra/tv28/2.jpg
[09:16] <UpuWork> strange design
[09:16] <UpuWork> doesn't look like it has one
[09:16] <UpuWork> but I could fit one to that
[09:16] <Gadget-Work> tbh could do it on the back of the connector
[09:16] <UpuWork> yep
[09:17] <UpuWork> if you send it up with a SAE I'll do it for you
[09:17] <UpuWork> but don't plug it into a big antenna
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[09:19] <UpuWork> BTW I sell premodded ones on my shop but they don't have E4000 tuners
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[09:22] <Gadget-Work> if you tell me what diode I need, no problem doing it myself :)
[09:22] <UpuWork> BAV99 i think PM me your address I'll post you a few
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[09:28] <navrac_work> Just realised I wont be able to make the conference this year - I'll be in Paris installing junk for the motor show :-(
[09:29] <UpuWork> want me to cancel you navrac_work ?
[09:30] <cuddykid> I'm not going to be able to make it either :( (very annoyed!)
[09:30] <cuddykid> well, I'm 80% sure I can't
[09:30] <cuddykid> moving stuff back to uni that weekend
[09:30] <navrac_work> well cross my name of the list, pity I was looking forward to it
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[09:30] <Hix_> I've read quite a few comments stating that software serial shouldn't be used for HAB, but if I have GPS and NTX2 how do you get around only 1 UART on Arduino Uno?
[09:30] <UpuWork> program via the ICSP
[09:31] <UpuWork> or connect the GPS after programming
[09:31] <Darkside> get an AVRISP MKII, they're well worth it
[09:31] <UpuWork> https://www.olimex.com/dev/avr-isp500.html
[09:31] <cuddykid> yeah, I used to unplug GPS then program it then plug GPS back in - was a bit of a fiddle though
[09:31] <navrac_work> I've never had a problem with software serial - below 9600 anyway
[09:31] <UpuWork> I use one of those they work fine
[09:31] <UpuWork> SS runs fine at 4800
[09:32] <jonsowman> agreed on the avrisp mkII
[09:32] <UpuWork> much quicker to program too
[09:32] <Hix_> so ss is just a problem over 4800 then?
[09:32] <UpuWork> I found it lost characters
[09:32] <UpuWork> your milage may vary
[09:32] <Hix_> and for flight computer we run at 4800 so it'll be ok?
[09:32] <MrScienceMan> yep, SS losses chars above 4800
[09:32] <Hix_> ahhh
[09:33] <MrScienceMan> mine ran fine
[09:33] <MrScienceMan> also if you run time sensitive code, disable the interupt
[09:33] <UpuWork> *should* be ok as long as the timing doesn't go off
[09:33] <MrScienceMan> serial.end() and then begin()
[09:33] <UpuWork> I would just use hardware and have done with it
[09:34] <Hix_> thats the issue theres NTX2 and GPS and both require serial, so do you just use GPS rx and NTX2 tx on serial 1/2
[09:35] <cuddykid> weather doesn't look too good tomorrow morning :(
[09:35] <daveake> NTX2 is normally bit-banged
[09:35] <daveake> Preferably under a timer interrupt
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[09:36] <daveake> Do that, then use the h/w UART for the GPS, and use the AVR ISP to program.
[09:36] <daveake> Pleasantness will ensue
[09:36] <UpuWork> NTX2 needs serial ?
[09:37] <UpuWork> not on my boards
[09:37] <UpuWork> how do you have the NTX2 wired up HIx ?
[09:38] <Hix_> oops nope, its not serial its one of the digital pins, my bad. I was thinking of SMS
[09:38] <griffonbot> Received email: Dave B "[UKHAS] Re: Error in APRS Tracker Code"
[09:38] <UpuWork> SMS will work fine via SS I suspect
[09:38] <MrScienceMan> heh
[09:38] <UpuWork> but GPS is critical so do it the best you can which is on the hardware timed UARTS
[09:39] <MrScienceMan> we have some nice footage of phoenix1 boucing off some hill :)
[09:39] <UpuWork> linky MrScienceMan
[09:39] <Hix_> not that I'm going to be incorporating SMS anytime soon :)
[09:39] <daveake> Well ... RTTY is of course normal RS232-style serial, so it is possible to generate it from a h/w UART (which is what I did in PIE1). All we're doing when we generate RTTY in code, using delays or timer interrupts, is build a s/w Tx-only UART
[09:39] <MrScienceMan> UpuWork: its still in huge 4gb chunks
[09:39] <MrScienceMan> will do when its ready
[09:39] <UpuWork> ok
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[09:40] <Hix_> gotcha daveake
[09:42] <Hix_> i think im getting my head around how to string the code part together (in theory :) )
[09:43] <costyn> Hix_: http://www.ebay.nl/itm/USBtinyISP-V3-0-Bootloader-For-Arduino-2560-UNO-R3-1280-A038-/251055189838?pt=LH_DefaultDomain_0&hash=item3a740e2f4e ordered one of these; works nicely
[09:44] <jonsowman> who needs cases :D
[09:44] <Hix_> costyn that's based on the Ladyada one isn't it? looks like the same thing
[09:45] <costyn> Hix_: yup, the ladyada one is open sores so the always industrious chinese have made their own copies
[09:45] <daveake> Cases are for wimps :p. And for people who routinely leave pieces of solder, nuts, bolts, bare wire, paperclips etc on their desks ...
[09:45] <costyn> heheheeh
[09:46] <jonsowman> i'm sure nobody on this channel would ever do such things
[09:46] Action: daveake looks around
[09:46] <daveake> Just me then :)
[09:46] <Hix_> :D resourceful we plagiarizers
[09:46] <zyp> I shrinkwrapped my jtag/swd programmer to avoid shorts
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[09:47] <costyn> good idea
[09:47] <jonsowman> i bought one with a case, but apparently that's uncommon
[09:47] <jonsowman> :)
[09:48] <costyn> why is there an unhappy smiley at the end of the /topic
[09:49] <zyp> it was added when the news about neil armstrong arrived
[09:49] <daveake> Long time ago I went to a customer in Milwaukee to fix someone else's firmware. I had a laptop (huge thing by today's standards) that had a single ISA slot inside. Into that was plugged an expansion board with a long ribbon cable going to a 3-slot ISA bus board, into which was plugged an EPROM programmer, into which was plugged another ribbon cable to the EPROM chip holder.
[09:49] <costyn> I see
[09:49] <costyn> heh
[09:49] <daveake> A paperclip rendered it all rather dead
[09:49] <Hix_> ouch
[09:50] <daveake> Took 3 days to get a PC rented, and the code copied from the hard drive, and programmer installed
[09:51] <daveake> During which I had plenty of time to stare at the errant code and find all 6 bugs
[09:51] <daveake> Which is just as well, because when I did finally program that EPROM, the hired PC promptly died :D
[09:52] <daveake> So yeah, buy the one in the case :p
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[09:54] <costyn> or make your own case
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[09:58] <Hix_> speaking of cases, has anyone heard of any prototype lpaces for such things? looked at protomould but waaay out of price range
[09:58] <Hix_> *places
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[10:09] <Hix_> i've seen |= and << in some sample code i've read through , could someone explain these two? || is OR < > greater / less but the two ive mentioned I've not seen before
[10:10] <cuddykid> Hix_: << is a bit shift
[10:10] <cuddykid> so << is to the left >> is to the right
[10:11] <eroomde> here I am
[10:11] <Hix_> ah ok, cheers do you know |= seems to mean OR equals but that sounds a bit weird
[10:11] <eroomde> stuck in the middle with u_int8
[10:11] <cuddykid> not sure what |= is& but != is not equal
[10:11] <Hix_> yeah
[10:11] <eroomde> a |= b is the same as
[10:11] <Hix_> that's what was making me confused
[10:11] <cuddykid> or is ||
[10:11] <eroomde> a = a | b
[10:11] <cuddykid> ah nice eroomde
[10:12] <cuddykid> makes sense now like +=
[10:12] <eroomde> exactly
[10:12] <Hix_> so |= is the same as !=
[10:12] <eroomde> no
[10:12] <eroomde> it isn't
[10:12] <eroomde> != is 'not equals to'
[10:12] <cuddykid> yeah
[10:13] <eroomde> so 1 != 2
[10:13] <eroomde> would evalute to 'true'
[10:13] <eroomde> because it is correect to say that 1 is not equals to 2
[10:13] <eroomde> i'll explain | in more depth now then
[10:13] <eroomde> it means 'bitwise or'
[10:13] <Hix_> so what does pipe do?
[10:14] <eroomde> so lets say I have a 8 bit binary number, in a variable called a. so a = 01001011
[10:14] <eroomde> hmm phone but hold this thought
[10:14] <Hix_> ok
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[10:16] <daveake> http://en.wikipedia.org/wiki/Bitwise_operation#OR
[10:16] <daveake> (in case eroomde is on the phone for a while) :)
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[10:16] <navrac_work> i wondered how long it would take someone to jump in to finish.. its just too tempting
[10:17] <Hix_> http://www.cprogramming.com/tutorial/bitwise_operators.html sorry, guilty too
[10:17] <zyp> you can consider | like a + except it doesn't have carry
[10:17] <zyp> (and is saturating)
[10:23] <cuddykid> woo - permission is through for tomorrow
[10:23] <cuddykid> speedy David
[10:23] <cuddykid> should be going ahead
[10:26] <daveake> cool
[10:26] <daveake> Did you fix that bug from last time? Padding ISTR but I could be wrong.
[10:27] <cuddykid> daveake: yep
[10:27] <daveake> excellent
[10:27] <daveake> Don't give JGC more fodder for his talk :)
[10:27] <cuddykid> zero filled it and hopefully patched up the no gps stuff
[10:27] <cuddykid> lol
[10:27] <daveake> "hopefully" ....
[10:27] <cuddykid> haha
[10:27] <cuddykid> or extensively lessened the amount of no gps strings
[10:28] <cuddykid> in testing I haven't encountered one yet
[10:28] <griffonbot> Received email: Adam Cudworth "[UKHAS] Re: Potential Launch This Thursday (30/08/2012) - Worcester Area"
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[10:29] <daveake> This with the "free" He?
[10:32] <cuddykid> yep :)
[10:32] <cuddykid> have to return it friday!
[10:32] <costyn> heh
[10:32] <daveake> Ah, hence the eagerness to launch!
[10:34] <fsphil> speedy and David dont' occur in the same sentence
[10:34] <costyn> fsphil: not for you it seems
[10:35] <gonzo_> so you are banking on a recovery, if you hve to return it
[10:35] <Hix_> :D
[10:39] <daveake> It's the only way to keep it affordable now ... you have to return the gas
[10:42] <eroomde> Hix_: sorry yes
[10:42] <eroomde> phone then local RS sales rep
[10:42] <eroomde> we spend enough now to qualify for personal visits :)
[10:42] <Hix_> no probs eroomde
[10:42] <Hix_> looked through y RS invoices the other day - they'd added £5 delivery after purchasde to every order
[10:43] <gonzo_> ah, always arrange a visit from the RS rep on a friday lunch time and meet in the pub
[10:43] <Hix_> so I'd clicked pay now using card with an agreed amount - then they change the amount at dispatch time. Despite having an account
[10:44] <Hix_> bit miffed to say the least
[10:44] <Hix_> sure it's not exactly legal to charge a card then change amount
[10:44] <gonzo_> when I was at GEC we had a good social club on site (with good beer), between RS, Farnelle and rthe rest, we got a piss up on account everey few weeks
[10:44] <eroomde> and i have just replaces the fuses in our 64A 3 pahse breaker that does the machine tools
[10:45] <eroomde> so, a productive morning except that nothing has yet been produced
[10:45] <Hix_> gonzo_: GEC as in Rugby?
[10:45] <gonzo_> stafford
[10:45] <gonzo_> the old nelson research lebs
[10:45] <gonzo_> labs
[10:45] <Hix_> ah OK grew up in Rugby and GEC was the mian employer, now it's a shadow
[10:45] <Hix_> think it was Willans
[10:46] <gonzo_> the stafford site was taken over by alstholm when I was there
[10:46] <daveake> I started at HEC Telecomms in Coventry
[10:46] <gonzo_> 75% of the site was shut by then
[10:46] <daveake> That had a bar too :)
[10:47] <daveake> -H+G
[10:47] <gonzo_> I used to share lifts in with a friend. We alwats arranged for his mussus to come and collect us on fridays, as we were not fit to drive
[10:48] <daveake> On Monday mornings I could often be heard saying "Who wrote this shit code? Oh, I did, after drinks on Friday"
[10:48] <Hix_> :D
[10:48] <gonzo_> stafford was my first job after uni. In the power electronics labs as a lab tech
[10:49] <gonzo_> hehe, yep, I know the feeling
[10:49] <Hix_> was that Turbines too or a different division of GEC
[10:49] <gonzo_> that was stafford yep
[10:50] <gonzo_> they used to bring them in for refurb. I saw the last one go out the door
[10:50] <Hix_> i rmember they used to shut roads to transport them on multi axle truck when I was a nipper
[10:50] <gonzo_> there was a test hanger that they ran them up to balance them. It was a huge concrete pit with thunderbird style doors
[10:51] <Hix_> someone said they needed to be ran up in a partial vacum to test, sounded a bit weird, was that rumour?
[10:51] <gonzo_> there were bunkers in the site that you would run through if the turbine started to wobble, as the pit may not hold it
[10:52] <gonzo_> dunno about that, sounds fair
[10:52] <Penfold> daveake: my exboss used to say he wrote his best code after a liquid lunch on Fridays. The scary thing was, he did. He just could never debug it till the following friday afternoon
[10:53] <gonzo_> actuallt it was grnerator armatures they did at our site. Not turbines (well not when I giot there)
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[10:54] <gonzo_> I remember the truck that took the armatures out with. The units were packed in huge wooden cases, like barrels, and the truck clamped to it as part of the structure
[10:54] <gonzo_> with a 2nd driver at the back to stear the arse end
[10:55] <gonzo_> I used to do work on avionics for a friend. And he used to get twitchy when he came with a unit late evening and I'd hgad a few beers. But had to explian all my wiring work was done when pissed
[10:56] <gonzo_> but always leave powering up till the sober double check
[10:57] <daveake> Penfold That's scary
[10:58] <gonzo_> you just jave to get the mind set back to how it was when you wrote the code
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[10:59] <gonzo_> manky wx. Was away camping at the weekend and trying to get all the kit washed and dry
[11:00] <gonzo_> the rain started, sleeping bags on line got wet and very heavy...... etc
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[11:09] <Penfold> daveake: http://xkcd.com/323/
[11:09] <daveake> haha
[11:09] <daveake> Yes saw that a while back
[11:13] <gonzo_> prob is, a year's supply of whiskey never lasts a year
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[11:25] <eroomde> Penfold: i don;t know if you ever noticed, but the peak occurs at 0.1337
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[11:28] <costyn> eroomde: hehe clever :)
[11:28] <Penfold> :)
[11:29] <cuddykid> does anyone have "optimal" settings for the A570? The settings I used last time weren't brilliant.. a lot weren't properly in focus etc
[11:30] <daveake> I'd set infinity focus
[11:30] <Hix_> eroomde: as in ^ft?
[11:30] <eroomde> lower resolution on lower compression > higher resolution on higher compression
[11:30] <daveake> Unless you want the ground photos to be in focus. Most of those are crotch shots anyway
[11:30] <eroomde> for a given filesize
[11:30] <cuddykid> daveake: yeah, will set infinity
[11:30] <eroomde> higher resolution doesn't really add any more information, it's pretty much just oversampling the lens information
[11:32] <cuddykid> brill, thanks
[11:32] Action: cuddykid powers up the chinky backup tracker
[11:33] <cuddykid> horah it works
[11:34] <cuddykid> and thankfully tesco mobile haven't obliterated my payg balance
[11:42] <Hix_> is there a limit for sensible payload weight. say for a 1600g balloon to achieve reasonable altitude? Reason I'm asking is I want to put the best camera I can up there but ideally want to achieve reasonable altitude
[11:43] <jonsowman> play with http://cusf.co.uk/calc
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[11:43] <costyn> Hix_: define reasonable?
[11:44] <costyn> Hix_: we got 37.5KM with a 1600 hwoyee and 600g payload
[11:44] <eroomde> such that conclusions can be made to follow from arguements according to a set of axioms
[11:44] <jonsowman> the 1600g hwoyees are notoriously variable
[11:44] <costyn> yea, was surprised it got that high seeing that we had overfilled it
[11:45] <eroomde> const hwoyee = 1600;
[11:45] <eroomde> take that jonsowman
[11:45] <jonsowman> haha
[11:45] <jonsowman> :D
[11:45] <eroomde> i don;t feel i am adding much to this convo really
[11:46] <costyn> Hix_: sounds like the price of the camera isn't in your equation? :)
[11:46] <jonsowman> exit* door = overthere;
[11:46] <eroomde> get(coat)
[11:46] <jonsowman> return false;
[11:47] <Hix_> well, ideally >30Km as to the camera, there is a budget, but I'd rather have something that shoots RAW so something like a G9/G10
[11:48] <eroomde> this shoots RAW: http://bit.ly/OtT9qD
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[11:49] <Hix_> hadn't seen that link before eroomde jonsowman cheers!
[11:49] <costyn> Hix_: cheapie canon a480 with chdk will do raw too
[11:49] <Hix_> eroomde: very good :D
[11:50] <costyn> just outside the frame is the photographer sprinting away I'm guessing
[11:50] <Hix_> will have to look into CHDK as I'm a Nikon kinda person
[11:50] <eroomde> yes i imagine he was fairly happy to let the lion have the camera
[11:51] <daveake> Should have used a gorilla pod
[11:51] <costyn> gorilla > lion?
[12:02] <Darkside> hrmm, possibly frequency clashj between XABEN and cuddykids launch?
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[12:04] <cuddykid> Darkside: where are the deets for XABEN?
[12:04] <Darkside> thursday morning, 434.650
[12:04] <cuddykid> oh
[12:04] <Darkside> small launch tho
[12:05] <cuddykid> sure it wasn't last thurs?
[12:05] <Darkside> no, this thurs
[12:05] <Darkside> check the list
[12:05] <Darkside> though he did announce after you
[12:05] <navrac_work> thats the 100g isnt it?
[12:05] <Darkside> yes
[12:05] <Darkside> but it could still cause clashes
[12:06] <cuddykid> ah - yes, I see it's nested in another thread
[12:06] <cuddykid> thanks Darkside
[12:06] <cuddykid> I'll give him a call
[12:09] <cuddykid> should be ok - he's hoping to get off earlier than myself - and his shouldn't be too long
[12:10] <UpuWork> cuddykid can you give me a prediction at the moment ?
[12:10] <UpuWork> I really need to sort out the computer interface for this rotator
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[12:12] <cuddykid> UpuWork: one sec
[12:13] <cuddykid> UpuWork: http://habhub.org/predict/#!/uuid=48364cb87b4f1e37937e4723a97bc2728822cf64
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[12:14] <kokey> cool, my Yupiteru MVT-7100 arrived
[12:14] <kokey> too bad I'll have to wait before I can play with it
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[12:22] <craag> New funcube pro+ being worked on: http://www.funcubedongle.com/?p=907
[12:22] <craag> Has SAW filters for 2m and 70cm.
[12:22] <Laurenceb> http://imgur.com/a/VZDti
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[12:26] <UpuWork> ok thanks cuddykid
[12:27] <cuddykid> np
[12:27] <joph> craag, the funcube died for me with the rtl-sdr
[12:28] <joph> Laurenceb, ?
[12:28] <Laurenceb> http://imgur.com/xhKhx
[12:28] <UpuWork> fingers cross the bias T works on my FCD so I can track both
[12:29] <craag> Yep, some still prefer the higher signal resolution in the funcube though, it'll be interesting to see what they've improved.
[12:29] <cuddykid> hmm, I'm guessing http://www.pcworld.co.uk/gbuk/veho-vsd-001-usb-2-0-memory-card-reader-11116899-pdt.html would work with SDHC cards also?
[12:30] <UpuWork> if it doesn't say it does assume it doesn't
[12:30] <cuddykid> good point
[12:30] <UpuWork> in fact MMC
[12:30] <UpuWork> so no
[12:31] <Darkside> heh, i'm not surprised the guy added more preselection filters
[12:31] <Darkside> i wonder what SAW filter he's using
[12:32] <joph> yeah, i had the funcube once and it was very annoying during the missing filters
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[12:34] <costyn> Laurenceb: that's pretty cool of Samsung
[12:40] <griffonbot> Received email: Steve Aerospace "Re: [UKHAS] Re: Potential Launch This Thursday (30/08/2012) -
[12:45] <UpuWork> RocketBoy do you have a prediction for your flight ?
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[12:50] <RocketBoy> haven't really decided on a launch spot but somthing like http://habhub.org/predict/#!/uuid=dc931aed8cd0218608938d7cc89dbacc20324da2
[12:52] <eroomde> do you hold continuous notams for a few different places now RocketBoy ?
[12:52] <RocketBoy> pico flight - exempt mate
[12:52] <eroomde> ah righty
[12:53] <RocketBoy> 0.8m dia at launch
[12:55] <UpuWork> cheers
[13:00] <RocketBoy> 1.8m at burst
[13:17] <SamSilver> RocketBoy: I prefer this one, less gas, http://habhub.org/predict/#!/uuid=0ec7f2fe20f95c53b4e9a6cedf00f1dd56b8ffb7
[13:18] <costyn> SamSilver: lol
[13:18] <costyn> SamSilver: going to look for the Baltic Sea Anomaly
[13:18] <costyn> ?
[13:18] <SamSilver> yip
[13:19] <Burninate> what's the big deal?
[13:19] <costyn> SamSilver: that's some parachute you've got there... 0.00001 m/s descent rat
[13:19] <SamSilver> Tesco are having a sale
[13:20] <SamSilver> well 0.00001 is to simulate float
[13:20] <SamSilver> not a para at all
[13:22] <SamSilver> http://en.wikipedia.org/wiki/Baltic_Sea_anomaly
[13:22] <SamSilver> TIL
[13:23] <costyn> :)
[13:23] <Burninate> How does it work, insofar as you are in the airspace of three different countries which have major helicopter flights through that area?
[13:23] <costyn> SamSilver: you should GIS for it, cool pics :)
[13:23] <costyn> Burninate: quitely launch it and hope nobody notices
[13:24] <SamSilver> Burninate: it is under 2m in dia no regs for it
[13:25] <Burninate> launch dia?
[13:27] <jonsowman> must be <2m in any dimension for the entire flight
[13:27] <Burninate> cool
[13:27] <Burninate> what's the floating altitude?
[13:29] <SamSilver> jonsowman: could you provide jamescox write up on pico flights please, I am at work and have not saved it on this pc
[13:29] <Hix_> is there a preference for the lat long in the string?
[13:29] <jonsowman> mm, is that on the wiki SamSilver?
[13:29] <SamSilver> yip thanx
[13:29] <SamSilver> on tellephon aswell
[13:29] <Hix_> habitat states dd.dddd or ddmm.mm are ok, but which is most common?
[13:30] <jonsowman> http://ukhas.org.uk/projects:picoatlas
[13:30] <jonsowman> loads of stuff there
[13:30] <jonsowman> Hix_: decimal degrees
[13:30] <Hix_> ok - makes the code easier too :)
[13:30] <jonsowman> the only reason people use degrees dec mins is if you're pulling it from NMEA which has that
[13:33] <SamSilver> Burninate: a good place to have a look see > http://ukhas.org.uk/projects:picoatlas
[13:40] <SamSilver> slightly off topic > http://i.imgur.com/SmYS6.jpg
[13:42] <jonsowman> i do like HIMYM
[13:51] <Laurenceb> didnt notice, too distracted by girl to left
[13:53] <eroomde> this person is an actual post-doc in my old lab
[13:53] <eroomde> http://mi.eng.cam.ac.uk/~oa214/
[13:53] <costyn> i lolled
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[14:11] Nick change: Gadget-Mac_ -> Gadget-Mac
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[14:20] <WillDuckworth> hi, can anyone enable wdhab and habe documents in fldigi please
[14:21] <UpuWork> HABE is enabled I think
[14:21] <UpuWork> no its not
[14:22] <UpuWork> when are you planning on launching WillDuckworth ?
[14:22] <WillDuckworth> hey - think i'm just going to piggyback on cuddykid's - if it still works!
[14:22] <UpuWork> ok requested#
[14:23] <WillDuckworth> haven't got round to soldering up your modules yet upu
[14:23] <UpuWork> one of the lovely HABitat team will sort it shortly
[14:23] <WillDuckworth> ta
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[14:23] <nigelvh> Morning
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[14:28] <UpuWork> afternoon nigelvh
[14:28] <fsphil> hmmm.. not long till home time
[14:29] <UpuWork> indeed
[14:30] <UpuWork> ping MrScienc1Man
[14:30] <DanielRichman> UpuWork / WillDuckworth: HABE was enabled, WDHAB enabled
[14:30] <nigelvh> How has the day treated you guys?
[14:30] <DanielRichman> *now enabled
[14:30] <UpuWork> thanks DanielRichman
[14:30] <WillDuckworth> cheers DanielRichman
[14:31] <UpuWork> enabled for tommorrow DanielRichman ? I hit refresh payloads and they aren't there
[14:32] <griffonbot> Received email: Anthony Stirk "[UKHAS] Re: Bulgarian teams will launch tomorrow (26th)"
[14:41] <DanielRichman> UpuWork: I enabled both as testing flights. Have reread; will enable for the actual flight - then it should show up in the main list
[14:41] <DanielRichman> in meantime, the show testing flight checkbox should do the trick
[14:42] <UpuWork> k thx
[14:44] <DanielRichman> should they be grouped together - are they flying on the same balloon?
[14:44] <Hix_> has anyone used an EEPROM with the uBlox yet?
[14:44] <UpuWork> yes they are
[14:46] <DanielRichman> UpuWork: refresh flights, and you should see it
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[14:46] <DrLuke> Hix_ why would you want to do that?
[14:47] <Hix_> permanently store configuration so it doesn't need to be configured at startup. If there is an EEPROM it reads the config from it at boot
[14:48] <DrLuke> You can store the config on the internal flash
[14:48] <Hix_> on the MAX6 from upu-store?
[14:48] <DrLuke> Oh
[14:49] <DrLuke> I thought you meant the neo-6q
[14:49] <DrLuke> I'm not sure if you can on the max, check the datasheet
[14:49] <Hix_> ah sorry no. There is no onboard on Max6
[14:49] <UpuWork> yep thats all good, I like the grouping feature DanielRichman
[14:50] <DanielRichman> :-)
[14:50] <Hix_> where do you get the NEO-6q from though? DrLuke ? interested in them for other projects what dont have a controller
[14:50] <DrLuke> I got mine on ebay
[14:50] <DrLuke> and as far as I know upu also sells them
[14:51] <Hix_> ah ok, will look there. Surprisingly I rarely look there for electronic gear, dunno why
[14:51] <UpuWork> I don't sell NEO-6Q's
[14:51] <griffonbot> Received email: mervyn@westvieweast.com "[UKHAS] Slideshow of HAM-1 flight on 18th August 2012"
[14:51] <UpuWork> though I do have one breakout board left and fsphil may sell you a module
[14:51] <fsphil> certainly would
[14:53] <Hix_> how much are they phil? They seem steep.
[14:54] <Hix_> oops fsphil £?
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[14:54] <UpuWork> my breakout doesn't have the I2C's broken out
[14:55] <DrLuke> boo! :P
[14:55] <UpuWork> I can make you one that does if you want will be about £20 though
[14:55] <UpuWork> you'll get 10 PCB's though
[14:55] <DrLuke> a real bargain
[14:55] <DrLuke> 1 pcb for use, 9 coasters for teacups
[14:56] <UpuWork> very small teacups
[14:56] <Darkside> theyd; be a bit small for that
[14:56] <Darkside> heh
[14:56] <DrLuke> vodka-glasses then
[14:56] <Hix_> I'd probably get some boards made from Seeed as they'd be fro another project i've been thinking of
[14:56] <fsphil> Hix_: £20 + p+p
[14:57] <Hix_> so they'dhave other bits and bobs on them
[14:57] <DrLuke> actually I just had a really cool idea: what about a pcb-coaster that doubles as a heater to keep your tea warm?
[14:57] <UpuWork> I can give you a contact Hix, he's slightly more expensive than Seeed but you can speak to him
[14:57] <UpuWork> only talking a few $
[14:57] <UpuWork> I use him over Seeed now
[14:57] <Hix_> fsphil: I'll have one
[14:57] <Darkside> he actuslly responds to emails
[14:57] <Hix_> UpuWork: yeah, be cool cheers
[14:57] <UpuWork> he's on IRC
[14:57] <DrLuke> in english and all
[14:58] <Hix_> UpuWork: does it skip chinapost?
[14:58] <Darkside> you can go via UPS if you want
[14:58] <Darkside> but that costs USD$20
[14:58] <Darkside> very fast tho
[14:59] <Hix_> I always seem to get stng for handling by UPS
[14:59] <DrLuke> when I had my first pcb made, the wait almost killed me
[14:59] <Hix_> *stung
[14:59] <UpuWork> 9 days normal delivery using HK POst
[14:59] <Hix_> mine were about 15days - beginners luck I'll bet
[14:59] <UpuWork> +3-4 making
[15:00] <DrLuke> I had to wait 6 weeks with itead
[15:00] <UpuWork> sec I'll see if I can find the docs
[15:00] <Darkside> mm, his turnaround is *Really* cast
[15:00] <Darkside> fast*
[15:00] <DrLuke> so I'd be glad to pay a few bucks more to actually get it within a few weeks instead of months
[15:01] <Upu> I keep loosing the document he sent
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[15:03] <UpuWork> whats your mail address Hix_ (PM)
[15:03] <DrLuke> https://plus.google.com/113821527071495870594/posts/MgMuPNohU8M
[15:03] <DrLuke> haha, genius
[15:08] <Darkside> its a hoax
[15:09] <Darkside> taken from something 9gag had written
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[15:11] <DrLuke> oh
[15:20] <griffonbot> Received email: John Graham-Cumming "Re: [UKHAS] Slideshow of HAM-1 flight on 18th August 2012"
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[15:44] <Lunar_Lander> hello
[15:45] <Lunar_Lander> I got my cutdown to work
[15:45] <Lunar_Lander> simply put in a longer piece of NiCr
[15:45] <Lunar_Lander> went orange as soon as the current came on
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[15:48] <UpuWork> sounds like you have enough juice going through it then
[15:48] <Lunar_Lander> yeah
[15:49] <cuddykid> what's the optimal exposure for A570? I had it on F4 last time and they didn't turn out brilliant
[15:49] <Lunar_Lander> I am thinking about the big lipoly still though, as we talked about that
[15:49] <UpuWork> cuddykid just stick it on landscape mode
[15:49] <Hix_> cuddykid: there's an old photographers saying "f8 and be there"
[15:49] <Lunar_Lander> if I should go for ultimate lithium AA, or AAA or use a 1000 mAh lipoly that I am receiving tomorrow
[15:49] <UpuWork> ultimate lithium AA
[15:49] <Lunar_Lander> ok
[15:50] <cuddykid> UpuWork: is that what you use?
[15:50] <UpuWork> Canons engineers spend years perfecting the algorithm that detects the scene and sets the approprate exposure
[15:50] <UpuWork> and for 95% of the time it will get it right
[15:50] <UpuWork> yep
[15:50] <UpuWork> flash off
[15:50] <UpuWork> screen off
[15:50] <UpuWork> landscape mode
[15:50] <UpuWork> power off disabled
[15:50] <UpuWork> have a nice day
[15:50] <cuddykid> brill - will use that!
[15:50] <Hix_> landscape defaults to small aperture and infinity focus so should be spot on
[15:50] <daveake> cuddykid Those cameras don't actually have an adjustable aperture
[15:51] <daveake> So changing the setting won't give you more or less depth of field
[15:51] <Lunar_Lander> second
[15:51] <Lunar_Lander> how can you turn the screen off?
[15:51] <cuddykid> UpuWork: I'm guessing the viewfinder etc doesn't need to be exposed - just lens
[15:51] <cuddykid> daveake: ah
[15:51] <daveake> All they do is insert a neutral-density filter to cut down the light
[15:51] <cuddykid> Lunar_Lander: via the settings
[15:51] <Hix_> there'll be a light sensor port somewhere oon it
[15:51] <UpuWork> Lunar_Lander stick something non conductive in the AV socket on side
[15:51] <Lunar_Lander> OK
[15:51] <UpuWork> settings don't always work
[15:51] <Lunar_Lander> that will block it?
[15:51] <UpuWork> physical is better
[15:51] <UpuWork> jsut turns the screen off camera works as normal
[15:51] <Lunar_Lander> like loudspeakers turning off if you plug headphones in?
[15:52] <UpuWork> you got it
[15:52] <daveake> At f/4 the camera will have trouble getting a shutter speed fast enough to prevent over-exposure
[15:52] <UpuWork> let me see from the exif data what it took my pics at autotmatically
[15:52] <daveake> So basically, let the camera sort things out. Setting landscape mode or infinity focus is the only thing I'd do
[15:53] <UpuWork> 1 sec
[15:53] <daveake> Fly an SLR and you have proper options :)
[15:53] <cuddykid> :)
[15:54] <Hix_> I was thinking of it but it would hurt to see it plonking into the Nord See
[15:54] <UpuWork> ok
[15:54] <UpuWork> 1/807s @ F/7.1
[15:54] <Lunar_Lander> thanks Upu
[15:54] <Hix_> there you go f8 and be there ;p
[15:55] <UpuWork> yep
[15:55] <UpuWork> that was on landscape mode
[15:55] <cuddykid> UpuWork: do you mess about with compression settings, IS mode etc at all or just what you put above?
[15:55] <UpuWork> max quality
[15:55] <UpuWork> and then leave it too it
[15:55] <cuddykid> cheers :D
[15:55] <UpuWork> and don't put anything in front of the camera
[15:55] <UpuWork> stick the lense outside the box and job done
[15:57] <UpuWork> btw top tip
[15:57] <UpuWork> if you take the ink bit out of a BIC pen
[15:57] <UpuWork> and cut it (a bit with no ink in it durr) it fits nicely in the AV socket on the canon cameras and knocks the screen out
[15:58] <Lunar_Lander> xD durr
[15:58] <cuddykid> lol
[15:58] <daveake> Or, if you use the bit with ink in it .... you may end up with "space art"
[15:58] <cuddykid> that indeed is a top tip
[15:58] <cuddykid> lol
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[15:59] <Lunar_Lander> hey that works well!
[15:59] <UpuWork> yeah and you can wander off into the sunset contemplating that today....you did something wonderful....
[15:59] <daveake> A productive day indeed
[16:01] <Lunar_Lander> I'd like to ask a question to the one part in the reply to Kevin Walton on the mailing list
[16:02] <Lunar_Lander> it was said that one should write his own code
[16:02] <Lunar_Lander> but what about the generic stuff like the ublox commands and so on?
[16:02] <navrac_work> i agree - no point writing all the code
[16:02] <fsphil> I don't think that was said?
[16:02] <fsphil> the general idea is that you understand the code
[16:02] <fsphil> don't copy it blindly
[16:02] <daveake> You should know how all your program works
[16:02] <Lunar_Lander> yea
[16:03] <navrac_work> hmm it sort of read that way to me - but if you dont understand it dont use it is a good guide
[16:03] <daveake> And after last weekend, "if it don't work, don't use it" too
[16:04] <DanielRichman> I think there's a big difference between "using someone elses code" - i.e., cobbling together example snippets, and using a library someone else has written and designed to be used in other projects
[16:04] <Penfold_> if it doesn't pass its unit tests, don't use it.
[16:04] <Lunar_Lander> what happened last weekend btw?
[16:04] <fsphil> as often when you sit down and study some code, you find out it's really not that hot :)
[16:04] <Penfold_> if it doesn' HAVE unit tests....
[16:04] <daveake> Lunar_Lander See the mailing list - it was all explained very vell there
[16:05] <daveake> well
[16:05] <Lunar_Lander> ok thanks
[16:05] <daveake> Short version - someone used some code that was very broken
[16:06] <Lunar_Lander> ah you mean the APRS thing
[16:06] <daveake> Yes
[16:06] <Lunar_Lander> yeah I read that earlier
[16:07] <fsphil> I'm amazed someone published that code
[16:07] <navrac_work> Since I have to write 'nice tidy tested' software for my day job, I do get a kick out of kludging code together as quickly as I can for hobby stuff
[16:08] <Lunar_Lander> yea
[16:09] <fsphil> my kludgy code never leaves my laptop :)
[16:09] <fsphil> but there's a lot of it
[16:10] <Penfold_> :D I write non-kludgy Perl for a living (and yes, that IS possible)
[16:10] <Hix_> I am going through others' code and trying to piece together how it all works. once I've got a handle on how i think it works I endeavour to write it myself following the framework. Hopefully that ethos is ok?
[16:10] <fsphil> you sir need an award
[16:10] <Penfold_> have had people loking over my shoulder go 'is that C#?' "no. It's properly written OO Perl."
[16:11] <navrac_work> some of my best algorithms have come from rushed late night, wine fueled playing around. Having said that I do tidy up/rewrite before release.
[16:11] <fsphil> code can be art too :)
[16:12] <navrac_work> ~I think so too
[16:12] <Hix_> a black art at the mo :)
[16:12] <BrainDamage> Penfold_: example please, I'd like to see for the first time ever in my life good perl code
[16:13] <fsphil> lol
[16:13] <navrac_work> just keep hammering at it Hix_ it all makes sense eventuallly
[16:13] <Hix_> fsphil: can you pm me about the uBlox and how you want remunerating for said piece of electrickery
[16:13] <fsphil> Hix_: Indeed fine sir, but thus will have to delay as I am planning my escape from the office environment in the next few minutes
[16:14] <Hix_> navrac_work: i'm getting there - it's just like climbing Alpe D'Huez on a rusty bike - painful and slow :)
[16:14] <fsphil> or something
[16:14] <Penfold_> http://pastebin.com/Q7At82j1
[16:14] <navrac_work> yep - but once you get to the top you get to freewheel all down the other side
[16:14] <Hix_> ha fsphil a fine endeavour#
[16:14] <Hix_> navrac_work: hope so
[16:15] <Penfold_> :D
[16:15] Action: Penfold_ eyes that - although I *will* shoot the twat who wrote it for using "(condition) || action" rather than (in this case) "action if (condition)" as it just makes it needlessly hard to read.
[16:16] <Penfold_> sicne, as you can see, I got that wrong - "action if (!condition)"
[16:30] <nick_> Does the ublox's time output send a short pulse each second, or just switch each second
[16:30] <nick_> ?
[16:31] <Hix_> from what I've seen it is a pulse
[16:32] <Hix_> nick_: Pulse output at 1pulse per second aligned to the GPS signal. Leave open if not used, Voltage level referred VCC_IO
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[16:49] <Lunar_Lander> the funniest thing was to see the smoke rising from the wire when the fats burned off (the fats left on it when I adjusted the wire with my fingers, as the wire didn't have good contact with the terminals)
[16:51] <DrLuke> probably wasn't the fats
[16:51] <DrLuke> but some residue from production
[16:52] <Lunar_Lander> well when I adjusted the wire and turned the arduino on, there was a puff of smoke from the wire
[16:52] <Lunar_Lander> and when I readjusted and turned it on again, another puff of smoke
[16:52] <DrLuke> weird
[16:53] <Lunar_Lander> yea
[16:53] <Lunar_Lander> but looked funny
[16:53] <Lunar_Lander> xD
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[16:57] <daveake> Who's doing the BEAR and Osiris launches on Sunday?
[16:57] <daveake> OK, cancel that, I remmeber now ...
[16:57] <daveake> .... it's me :D
[16:58] <daveake> Don't usually have brain fade this late in the day :D
[16:58] <Lunar_Lander> xD
[16:58] <daveake> That's what happens when I use new names :)
[16:58] <Lunar_Lander> btw big thanks to daveake and Upu
[16:59] <daveake> eh? what did we do?
[16:59] <Lunar_Lander> without you and all the others I won't have made it that far
[16:59] <daveake> If we'd been any good you'd have launched by now :p
[16:59] <Lunar_Lander> xD
[17:00] <RocketBoy> thats gotta be a classic
[17:00] <Lunar_Lander> hi RocketBoy
[17:00] <Lunar_Lander> what I wanted to ask about your circuit
[17:01] <Lunar_Lander> would a 3300 uF capacitor work too?
[17:01] Action: daveake hangs head in shame
[17:01] <RocketBoy> what voltage will it be charged to
[17:03] <Lunar_Lander> it was just a question
[17:03] <Lunar_Lander> cause he didn't have 4.7 mF in 10 V
[17:03] <Lunar_Lander> just 16 V
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[17:07] <RocketBoy> the value is fine for 5v or more charing voltage E - 1/2CV^2
[17:08] <RocketBoy> basically is an energy dump from the cap into the ignitor - but allowing for FET and cap impedance
[17:08] <Lunar_Lander> I know that formula, just wanted to ask for verfication
[17:09] <RocketBoy> so for smaller C just use higher V
[17:09] <Lunar_Lander> ok
[17:10] <DrLuke> also always derate the voltage rating of a cap by 50%
[17:10] <DrLuke> so it it says 10V, it's max 5V
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[17:11] <RocketBoy> N28B igniters fire after 2ms of 1A into 1.6ohm (3.2mJ)
[17:11] <Lunar_Lander> ok
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[17:11] <RocketBoy> and N28F 40ms of 2A into 1.6ohm (256mJ)
[17:12] <Lunar_Lander> thanks
[17:12] <RocketBoy> so the Cap energy you will need shoild be significantly above these
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[17:12] <RocketBoy> BBL - tea
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[17:19] <griffonbot> Received email: David Akerman "[UKHAS] Launch Announcement - Sunday 2nd September"
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[17:34] <griffonbot> @adamcudworth: #HABE 5 about ready! #UKHAS http://t.co/DQpdG6iz [http://twitter.com/adamcudworth/status/240864895644618753]
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[18:16] <griffonbot> Received email: Steve Aerospace "Re: [UKHAS] Re: Potential Launch This Thursday (30/08/2012) -
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[18:35] <Laurenceb_> anyone remember the armadillo aerospace article about how they blew solenoid valves with breakpoints?
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[18:38] <Laurenceb_> i just did the same thing with LEDs :(
[18:38] <Darkside> i'll bite
[18:38] <Darkside> how
[18:39] <daveake> PWM halted and LED current too high for 100% on?
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[18:43] <Laurenceb_> yes
[18:43] <Laurenceb_> driving LEDs with 150ma
[18:43] <Laurenceb_> they are rated for 20
[18:43] <Darkside> why?
[18:44] <Laurenceb_> improves the stability
[18:44] <Darkside> ookay
[18:44] <Laurenceb_> less 1/f optical output noise
[18:44] <Darkside> ahh
[18:44] <Lunar_Lander> I got one more coding question
[18:44] <Lunar_Lander> because someone said don't use code from other projects
[18:45] <Laurenceb_> this sucks as they are sealed inside a laminated plastic enclosure on flex pcb :-/
[18:45] <Lunar_Lander> there is that USB Weather board by sparkfun and it uses a different way to handle the BMP085
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[18:45] <Lunar_Lander> what about that?
[18:46] <Darkside> with something as complex to drive as the BMP085, i'd probably ust use a library
[18:46] <Darkside> just*
[18:47] <Laurenceb_> the librarian can handle it fine and the library will keep it warm and dry
[18:52] <Lunar_Lander> yea
[18:52] <Lunar_Lander> they made a library
[18:52] <Lunar_Lander> that's what I meant
[18:52] <DanielRichman> RocketBoy: re your email; I activated the habe/wdhab doc earlier - was not aware that the frequency had changed since last time
[18:52] <DanielRichman> well, I didn't re read Adam's email with the frequency in it
[18:53] <DanielRichman> apologies
[18:54] <fsphil> Lunar_Lander: we didn't say that. we said don't use code without understanding it
[18:55] <Lunar_Lander> ok
[18:55] <fsphil> the code is published to be used :)
[18:55] <costyn> on Upu's RFM22b breakout the pin named SDL is SDO right?
[18:55] <Upu> checking
[18:55] <zyp> Darkside, isn't the bmp085 pretty easy to drive?
[18:56] <Lunar_Lander> :)
[18:56] <Darkside> yeah, it has some annoying calculations to get pressure out of it
[18:56] <Darkside> i just pulled in a library
[18:56] <costyn> and SDO on the rfm needs to be connected to the SDI on the microcontroller
[18:56] <Lunar_Lander> I think that the BMP085 is quite computationally intensive
[18:56] <Lunar_Lander> or so
[18:56] <zyp> why not just transfer the raw data and process them at the receiver side then?
[18:56] <Upu> costyn SDI is SDO yes
[18:56] <Upu> not sure why I did that
[18:56] <Darkside> zyp: lots of data to send
[18:56] <fsphil> an avr can do the calculation easily, it's just annoying
[18:57] <Darkside> and calibration values
[18:57] <costyn> Upu: SDI = SDO ?? then what is SDL :)
[18:57] <Upu> hang on
[18:57] <costyn> SDL is the only one I can't identify :)
[18:57] <Upu> SDL = SDI
[18:57] <Upu> SDI = SDO
[18:57] <Upu> wtf have I done that
[18:57] <costyn> confusing :)
[18:58] <Upu> sorry
[18:58] <Upu> yes that is dumb
[18:58] <costyn> derp moment? :)
[18:58] <Upu> very
[18:58] <costyn> never go full derp
[18:58] <costyn> :)
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[18:58] <Upu> I think I did
[18:58] <fsphil> hah
[18:58] <costyn> ok, well back to the brainfuck then :)
[19:00] Action: costyn breakes out the spreadsheet
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[19:01] <RocketBoy> DanielRichman: cheers - just wanted to know if I missed anything
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[19:02] <RocketBoy> I should have read the emails more carefully
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[19:20] <jcoxon> Evening all
[19:22] <daveake> evening
[19:22] <Lunar_Lander> hello jcoxon
[19:22] <Gadget-Mac> Yay, my SDR dongle is what it says on the tin :)
[19:22] <Gadget-Mac> http://pastebin.com/EnJSZPJ4
[19:23] <Upu> https://dl.dropbox.com/u/63720513/Images/HAB/HAB%20Filter/IMG_0844.JPG <- Now with HABAmp
[19:23] <Upu> be ready to track tomorrow Gadget-Mac
[19:24] <Gadget-Mac> Upu: if only
[19:24] <Gadget-Mac> Yeah HABAMP would be cool :)
[19:24] <Upu> they are on order
[19:25] <Gadget-Mac> Could we have a design for HABAmp with multiple outputs ;)
[19:25] <Upu> speak to Darkside
[19:26] <Gadget-Mac> and ESD protection diodes :)
[19:26] <Darkside> eh
[19:26] <Darkside> multiple outputs?
[19:26] <jcoxon> So who is going to emf camp?
[19:29] <Gadget-Mac> No such luck
[19:29] <Gadget-Mac> Darkside: yeah habamp to feed multiple dongles :)
[19:29] <jonsowman> unfortunately not jcoxon, friend of mine decided to get married this weekend
[19:29] <jonsowman> shockingly inconsiderate of her
[19:30] <Darkside> Gadget-Mac: just get a power splitter
[19:30] <jcoxon> Hehe, I'm moving house so cant go either
[19:30] <Darkside> wait, emf camp is this weekend isn it..
[19:30] <Darkside> Randomskk: ping
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[19:33] <Gadget-Mac> Upu: Whats going up tomorrow ?
[19:33] <Upu> XABEN and HABE
[19:34] <Darkside> i think Randomskk was planning on doing a pico launch from emfcamp
[19:34] <Darkside> better check what frequency he's going to be on
[19:34] <jonsowman> that's going to be Joey, so 434.630
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[19:34] <Darkside> ok thats fine
[19:35] <Gadget-Mac> Upu: Ah, ok one of those is local to me iirc
[19:41] <AndChat|> Hopefully emf will be a happen next year
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[19:59] <Lunar_Lander> Upu, I got one more question on simulating a flight using the software
[19:59] <Upu> go
[20:00] <Lunar_Lander> I got this thing https://www.sparkfun.com/products/718
[20:00] <Lunar_Lander> I would wire it up to USB and the comm lines to where the GPS would be in the arduino?
[20:01] <Upu> correct
[20:01] <Lunar_Lander> ok
[20:01] <Lunar_Lander> and then I'd run the program linked to in the wiki?
[20:02] <Lunar_Lander> but is that compatible to the ublox system?
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[20:03] <cuddykid> used a different method to string up the payload this time - http://notableknotindex.webs.com/boxsling.html
[20:11] Action: Gadget-Mac begins to look at SDR & linux & dl-fldigi
[20:12] <Darkside> gqrx is pretty good
[20:12] <Darkside> you can setup a loopback device in alsa
[20:12] <Lunar_Lander> once more, does that GPS sim thing work if your arduino is set to work with Ublox?
[20:12] <Darkside> so sdr -> gqrx -> loopback -> dl-fldigi
[20:12] <Darkside> Lunar_Lander: no
[20:12] <Lunar_Lander> OK
[20:12] <Lunar_Lander> can that be tested somehow?
[20:12] <Darkside> if you're using ublox's binary mode, or the PUBX stuff, you'll have to do your own testing
[20:13] <Lunar_Lander> ok
[20:16] <Lunar_Lander> so I'd need to send it what a PUBX string would look like over the comm channel
[20:16] <Darkside> yeah
[20:16] <Lunar_Lander> ah ok
[20:16] <Lunar_Lander> are there examples for that?
[20:16] <Darkside> or you could test your conversion functions individually
[20:16] <Lunar_Lander> as I understand it there are not
[20:16] <Lunar_Lander> oh ok
[20:17] <Darkside> if your stuff that takes the values and puts them into a string works, its likely it'll work with a gps
[20:17] <Darkside> and you can of course plug in a gps and test too :-)
[20:17] <Darkside> go for a drive or something
[20:17] <Lunar_Lander> yea
[20:18] <Lunar_Lander> like with the payload on a bicycle or car or so?
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[20:21] <Darkside> sure
[20:22] <Lunar_Lander> good idea
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[20:57] <Burninate> Are you aware of any other nations' equivalents to UKHAS?
[21:01] <Upu> there is ARHAB in the US but don't think they are quite as cental as us
[21:01] <Upu> other than that I think most of them come here
[21:01] <Upu> we are faily multi national
[21:01] <DrLuke> me and lunar_lander could found the GERHAS :P
[21:01] <Burninate> is the GPSL the nexus of US HAB activity?
[21:02] <Upu> I think so but I think they are just a mailing list
[21:02] <Upu> not 100% sure
[21:02] <Upu> I know the americans who have made it here say its alot more lively
[21:02] <Upu> here
[21:02] <Upu> GPSL do more field based stuff I think
[21:02] <Lunar_Lander> DrLuke, yea :)
[21:03] <Upu> HAS.de
[21:03] <DrLuke> already taken
[21:03] <Upu> shame
[21:03] <DrLuke> gerhas.de is free though
[21:03] <Lunar_Lander> yay
[21:03] <Burninate> is there any *structure* to UKHAS?
[21:03] <Lunar_Lander> yes
[21:04] <Burninate> chapters and membership and soforth
[21:04] <Lunar_Lander> UKHAS is there
[21:04] <Lunar_Lander> and people are here
[21:04] <Lunar_Lander> done
[21:04] <Lunar_Lander> xD
[21:04] <Upu> no structure Burninate
[21:04] <Upu> if you're here you're a member
[21:04] <DrLuke> well, maybe it should be turned into an actual club with memberships and stuff?
[21:04] <Upu> I don't think people want that
[21:04] <Upu> someone has to run it
[21:05] <DrLuke> well, yeah, that's the downside
[21:05] <Upu> you end up with people bickering about how the club should be run
[21:05] Action: Burninate reminds everone that he's working on a wiki for unmanned aerial vehicles, and HAB is just on the fringe of his interest area
[21:05] <Upu> its fine like it is
[21:05] <DrLuke> yep
[21:05] <Upu> Burninate not a problem there are cross over areas
[21:05] <DrLuke> well
[21:05] <Upu> you can still be part of our club :)
[21:05] <DrLuke> you can combine UAVs with HABs
[21:06] <Upu> sadly not in the UK
[21:06] <Burninate> I'm here in the interest of completeness, not participation as of yet
[21:06] <DrLuke> really?
[21:06] <Lunar_Lander> UAV is like a drone or so?
[21:06] <Upu> Yep
[21:06] <DrLuke> Unmanned aerial vehicle
[21:06] <Upu> I doubt you can do it in Germany too
[21:06] <DrLuke> well
[21:06] <Burninate> Primarily planes, helicopters, and quadrotors, but also extending into kites, balloons, blimps
[21:06] <DrLuke> there are some special laws about UAVs
[21:07] <Burninate> http://www.dronepedia.com/index.php?title=Main_Page
[21:07] <Upu> looks good
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[21:07] <Burninate> thx
[21:07] <DrLuke> actually curiosity's landing inspired an idea for me: what if you could extend the sides of the capsule to generate a little bit of lift and thus control the capsule on the way down?
[21:08] <DrLuke> you could avoid hitting roads and houses
[21:08] <Upu> it would become an UAV and probably not be allowed
[21:09] <DrLuke> hmm
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[21:09] <DrLuke> it wouldn't really be an UAV that much
[21:09] <DrLuke> just a way to control the fall
[21:10] <Burninate> I went over this a few weeks ago, there are definitional issues with "capable of sustained flight"
[21:10] <Upu> if it steered itself with no control from the ground towards a destination its a UAV
[21:10] <DrLuke> oh okay
[21:10] <Laurenceb_> Burninate: nice work
[21:11] <Burninate> For example: On which side does a paraglider fall
[21:11] <Burninate> still woefully incomplete, but it's getting there
[21:11] <Upu> well you aren't allowed to drop a paraglider either as it has to have a parachute on it
[21:12] <Upu> and a parachute that steers is probably a UAV :)
[21:12] <Burninate> A paraglider is a parachute
[21:12] <Laurenceb_> http://diydrones.com/profiles/blog/list?user=JackCrossfire
[21:12] <Laurenceb_> looks impressive
[21:12] <Laurenceb_> Burninate: seen my rogallo project?
[21:12] <Burninate> You're Jack Crossfire?
[21:12] <Upu> afk
[21:13] <Laurenceb_> no
[21:13] <Laurenceb_> unfortunately im not that awesome
[21:13] <Laurenceb_> its linked off your wiki
[21:13] <Laurenceb_> rogallo is here http://ukhas.org.uk/_media/projects:ukhas_glider_project:pict7924.jpg%3Fw%3D750
[21:14] <Burninate> My logs say "Exotic Aircraft" is a sexy title
[21:14] <Burninate> despite very little content and probably low utility
[21:14] <Burninate> cool
[21:15] <Laurenceb_> for dropping off a hab
[21:16] <Burninate> hrrm
[21:16] <Burninate> Connecting the dots, has anyone done a mapleseed spinning parachute?
[21:17] <Laurenceb_> only the military
[21:17] <Burninate> for HAB I mean
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[21:18] <Laurenceb_> sadarm
[21:18] <Burninate> ahh yeah, I remember those
[21:18] <Burninate> bomblets
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[21:34] <griffonbot> Received email: Daniel Saul "[UKHAS] Joey Launch - EMF Camp - This Weekend"
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[23:29] <Hix> ref todays comments about beer and coding. seems it works. this monkey now doesnt just see but also does
[23:40] <Penfold_> :)
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[00:00] --- Thu Aug 30 2012