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[09:46] <fsphil-laptop> simulated launch on aprs.fi: http://aprs.fi/?call=a%2F2I0VIM-2&_s=ll
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[10:08] <costyn> fsphil-laptop: well i certinaly have a buffer overflow somewhere; i've tried the dtostrf function and I'm seeing earlier debugging strings come by in my paylad string
[10:09] <costyn> fsphil-laptop: intersting sim
[10:09] <costyn> fsphil-laptop: you uploading this to aprs.fi?
[10:10] <jcoxon> morning
[10:12] <costyn> jcoxon: hiya... do you happen to have any code online for constructing payload sentences with sprintf ?
[10:13] <fsphil-laptop> costyn, the payload is loaded with fake gps data
[10:13] <Darkside> i doo
[10:13] <Darkside> hold
[10:13] Action: eroomde holds
[10:13] <jcoxon> costyn, ure
[10:13] <costyn> jcoxon: i'm recycling bits of Tim's code, but it's not behaving at all
[10:13] <fsphil-laptop> haha
[10:13] <fsphil-laptop> that makes sense
[10:13] <Darkside> i wonder why
[10:13] <Darkside> >tims code
[10:13] <costyn> hehe
[10:14] <costyn> his code is not held in very high esteem then I'm guessing?
[10:14] <Darkside> http://pastebin.com/ZmNvAHYe
[10:14] <jcoxon> costyn, https://github.com/jamescoxon/Atlas-Flight-Computer/blob/master/Atlas3/Atlas3_3.pde
[10:14] <Darkside> look! i even used a struct for storing position data
[10:14] <costyn> Darkside: thanks, that helps
[10:14] <fsphil-laptop> struct? ah man
[10:14] <costyn> jcoxon: and thank you too
[10:14] <Darkside> the plan was to write the struct to flash memory for storage
[10:14] <jcoxon> hey eroomde
[10:15] <fsphil-laptop> aaah
[10:15] <fsphil-laptop> good idea
[10:15] <fsphil-laptop> I may put the sequence number in flash
[10:15] <fsphil-laptop> so it continues after a power cycle
[10:16] <Darkside> fsphil-laptop: well that not what i had planned
[10:16] <Darkside> i wanted it for logging
[10:16] <jcoxon> i've found that its quite useful to have the sequence number reset
[10:16] <Darkside> a binary log
[10:16] <jcoxon> as you can work out that it did power cycle
[10:16] <Darkside> yeah
[10:16] <Darkside> or just hang
[10:16] <fsphil-laptop> there's that too
[10:16] <Darkside> like how we worked out what happened with nigeys pico payload
[10:17] <costyn> jcoxon: the gpsbee communicates with the same serial bus as programming the avr. if I have the gpsbee seated in it's socket, I can't program the avr any more. as I understand it, you can program the gps to shut up and only give data when polled, and my code does this afaik. but still i get the avrdude messages
[10:17] <costyn> jcoxon: any tips?
[10:17] <Darkside> costyn: you cant do much about that
[10:17] <Darkside> if you have an AVRISP, program the AVR using that instead
[10:18] <costyn> Darkside: I don't unfortunately
[10:18] <jcoxon> costyn, that is an issue
[10:18] <jcoxon> no way of disconnecting the gps?
[10:18] <Darkside> costyn: then you have to unplug the gps
[10:18] <Darkside> you havent got a choice in that
[10:18] <costyn> Darkside: ok good to know that there's no other way
[10:19] <Darkside> this is why i dont use the arduino bootloader with the atmega328s
[10:19] <jcoxon> there is a nice guide on sparkfun about how to share serial buses
[10:19] <Darkside> i prefer to program boards using ISP now
[10:19] <Darkside> you can program arduino sketches via ISP easily
[10:20] <costyn> Darkside: but you need the separate hardware ISP right?
[10:20] <Darkside> yes
[10:20] <Darkside> you can kind of use an arduino to do it, but its a pain
[10:21] <costyn> yea i saw that hackaday post
[10:21] <Darkside> not reccomended
[10:21] <Darkside> you can get an Atmel AVRISPMKII from farnell for about 30-40 pounds
[10:21] <eroomde> the AVR Dragon is nice too
[10:21] <eroomde> and you can do some debugging with it
[10:21] <Darkside> costs more
[10:21] <eroomde> about £38 from farnell
[10:22] <Darkside> really?
[10:22] <Darkside> cool
[10:22] <eroomde> uhuh
[10:22] <eroomde> fail whale
[10:23] <Darkside> lol
[10:23] <costyn> found it in a webshop here in NL for 40 euro; might consider it, but for now I hink I'll just pop the gps off when needed.
[10:23] <eroomde> http://uk.farnell.com/atmel/atavrdragon/emulator-programmer-for-avr/dp/1455088?Ntt=avr+dragon
[10:23] <jcoxon> costyn, thats what i do
[10:25] <costyn> jcoxon: you mind if I use bits of your code? I see Tim already did that, so in a way I am already :)
[10:26] <costyn> hmph... strange AVRISP clone for 15 euro: http://www.virtualvillage.nl/review/product/list/id/11459/
[10:26] <jcoxon> costyn, not a problem
[10:26] <Darkside> anyone know how tim did his RTTY transmission from his beagleboard?
[10:27] <Darkside> did he just use a FTDI chip running at 300 baud?
[10:27] <fsphil-laptop> yea
[10:28] <Darkside> hrmm
[10:28] <jcoxon> Darkside, steve wrote code to do it via audio out
[10:28] <jcoxon> rtty, packet and sstv
[10:28] <Darkside> how are you guys driving the radiometrix modules using a single pin?
[10:28] <Darkside> jcoxon: i have no audio on the beaglebone
[10:28] <jcoxon> oh right
[10:28] <Darkside> unless i add it myself
[10:28] <jcoxon> thats what we used on the gumstix
[10:28] <Darkside> but whats the point when i have 40 more 3.3V IOs
[10:28] <fsphil-laptop> two resistors, one to VCC and one to the TX pin
[10:29] <Darkside> oh
[10:29] <Darkside> you're using it as a pulldown?
[10:29] <fsphil-laptop> the one to vcc centres it (1.5v-ish)
[10:29] <fsphil-laptop> the tx pin is higher, and just varies it a bit
[10:29] <Darkside> ok
[10:29] <fsphil-laptop> (higher resistance)
[10:30] <Darkside> mm
[10:30] <Darkside> i'm thinking we'll have to do 300 baud using the UARTS
[10:30] <Darkside> and lower baud rates we can probably do with GPIO
[10:30] <Darkside> the problem is accurate timing is hard to do from within linux
[10:31] <fsphil-laptop> indeedy
[10:31] <fsphil-laptop> actually doing it via the sound card would probably be the best for timing, but you can't do FSK with that
[10:31] <Darkside> yeah and i dont have a sound card :P
[10:32] <number10> one pin tx ---35k2 ----GPS 3v3---6k2 ---GPS ----5k1---0v
[10:32] <costyn> jcoxon: delayMicroseconds(19500); // 10000 = 100 BAUD 20150 <-- does this mean 100 baud?
[10:32] <jcoxon> oh thats just me messing around
[10:32] <jcoxon> basically 19500 gives me 50baud
[10:32] <jcoxon> if you wanted 100baud you'd half that number
[10:33] <number10> mmm
[10:33] <fsphil-laptop> woo, my fake payload has broken the int16_t barrier
[10:33] <SpeedEvil> :)
[10:33] <number10> I meant NTX2 not GPS - I better go back to sleep
[10:33] <SpeedEvil> Is it in orbit yet?
[10:33] <number10> one pin tx ---35k2 ----NTX2 3v3---6k2 ---NTX2 ----5k1---0v
[10:34] <fsphil-laptop> not yet, sadly it will fake a burst at 30km :)
[10:34] <Darkside> heh
[10:34] <Darkside> no doodling over the map?
[10:34] <fsphil-laptop> lol no
[10:34] <Darkside> :D
[10:34] <Darkside> that was good fun
[10:36] <Upu> morning
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[11:34] <cuddykid> hi all
[11:38] <fsphil-laptop> yoyo
[12:07] <fsphil-laptop> and simulated burst
[12:07] <fsphil-laptop> on course for a simulated splash down :)
[12:11] <SpeedEvil> Do you have a simulated boat?
[12:12] <fsphil-laptop> better than that, I'll have a simulated helicopter
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[12:13] <fsphil-laptop> with a virtual HAB recovery team, highly trained in the art of spotting florescent boxes
[12:13] <fsphil-laptop> and cutting down trees
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[12:14] <SpeedEvil> Do they wear chequed shirts?
[12:15] <fsphil-laptop> a few of them might, eh
[12:16] <gonzo_> and on wednesdays they go shopping, and have buttered scones for tea
[12:16] <Darkside> ooooohhhhhhhhhhhhhhhhhhhhhh
[12:17] <Darkside> i'm a lumberjack and i'm OK
[12:17] <Darkside> i sleep all night and i work all day
[12:17] <gonzo_> hehe
[12:17] <gonzo_> wondered who would be the first!
[12:41] <cuddykid> seems to be more and more people coming out of the woodwork that are working on similar glider project with APM
[12:51] <SpeedEvil> I'm kinda wondering what would be required to make a windows 7 phone go supersonic, when dropped.
[12:53] <fsphil-laptop> same as any other phone?
[12:56] <SpeedEvil> Well, I wouldn't be as inspired with most other phoens.
[13:01] <navrac> anyone good with eagle here?
[13:01] <fsphil-laptop> I can do schematics in eagle, that's as far as I've gotten
[13:02] <fsphil-laptop> and I'm not great at that :)
[13:02] <navrac> its the pcb layout that i'm stuck on - i cant find a way to move a component onto the tracks on the other side of the board
[13:03] <navrac> and it now seems to think the board is outside the board area - which is odd
[13:04] <fsphil-laptop> I think I hit a similar problem
[13:07] <fsphil-laptop> Upu?
[13:07] <fsphil-laptop> not sure who else uses eagle here
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[13:20] <Randomskk> navrac: middle click to move layer iirc
[13:20] <Randomskk> and the board area is the max allowed size for the free version of eagle, which is the size the white outline initially starts out -- can't go outside that
[13:20] <fsphil-laptop> that explains that
[13:21] <fsphil-laptop> the parts start outside the area, is that why you can't move them back outside once they're on the board?
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[13:22] <cuddykid> I've used eagle in the past - hated it beyond belief :P - I have to use it again v soon to modify my design unless anyone knows any good alternative?
[13:24] <Randomskk> I like/use kicad
[13:24] <Randomskk> it runs on mac, os x, windows and is free/open source with no limitations
[13:24] <Randomskk> also the file format is text based so it does't totally destroy git etc
[13:24] <cuddykid> I'll take a look thanks :)
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[13:24] <Randomskk> plus it does some things better. on the other hand, its interface isn't much easier
[13:25] <Randomskk> PCB design tools are all professional tools, none of them are really "easy to use" per se
[13:25] <Randomskk> the other thing to check out if you don't like kicad is geda, which is linux-only iirc (though maybe runs on windows now?) but is the other big open source pcb design/layout software and is also very nice
[13:26] <Randomskk> kicad makes pretty schematics, https://randomskk.net/u/amp_sch.pdf
[13:26] <cuddykid> nice
[13:26] <Randomskk> plus its schematic editor lets you do multiple sheets but also hierarchial sheets
[13:26] <Randomskk> whereby a sheet has stuff on it and connections in/out, then you have a higher-level sheet that just contains the low level sheets and wiring to connect them
[13:26] <Randomskk> as high as you like
[13:26] <Randomskk> which is kinda nice for abstracting complicated PCBs
[13:27] <Randomskk> e.g. you can have a radio sheet and a mcu sheet and a psu sheet and a sensors sheet, and the sheets have power/data lines in/out, and then the top level sheet just shows those subsheets and the connections
[13:27] <navrac> sorry had to run off. back now
[13:27] <Randomskk> navrac: answered your eagle question ^ a bit
[13:27] <navrac> yep - no middle button on the mouse!
[13:28] <fsphil-laptop> mouse wheel?
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[13:29] <navrac> and the board area thing is weird - i had nearly finished the pcb and saved it reopened it and then added components to the schematic. it puts them on the board window - but as soon as i click on them to move them they wont move and it tells me they are outside the board area
[13:29] <navrac> the board is only 36mmx65mm
[13:29] <Randomskk> navrac: click with both mouse buttons
[13:29] <navrac> mouse wheel does zoom
[13:29] <navrac> ooh let me try
[13:29] <fsphil-laptop> you can press the mouse wheel
[13:29] <Randomskk> navrac: don't place them in the negative region of the pcb
[13:29] <fsphil-laptop> it's usually a middle click
[13:29] <Randomskk> well, yes, press the mouse wheel if you can do that
[13:29] <navrac> its about 15 years since i had to design my own pcb's
[13:30] <Randomskk> I thought you meant you couldn't click with your mouse wheel
[13:30] <Randomskk> if not there is probably a keyboard key to swap layer too, maybe pgup/pgdown, but I can't remember
[13:30] <navrac> on my laptop - no mouse wheel
[13:30] <fsphil-laptop> aah
[13:30] <Randomskk> on a laptop, pressing both left and right click at once should middle click
[13:30] <Randomskk> anyway yea, with those parts being 'outside the board area', are you placing them in the negative region of the screen? like, the wrong side of the origin?
[13:30] <Randomskk> because that counts as not allowed
[13:31] <Randomskk> but it will place new parts there itself
[13:31] <Randomskk> you just can't put stuff there with Move
[13:31] <Randomskk> try placing them on top of the PCB
[13:31] <Randomskk> shit, 1.30, gotta run
[13:31] <Randomskk> bbl
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[13:32] <fsphil-laptop> yay, paint arrived
[13:34] <SpeedEvil> Yay :/ Fuel filter arrived for generator.
[13:34] <SpeedEvil> The picture looked right.
[13:34] <SpeedEvil> However, I was wanting something ~2cm high, not ~2"
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[14:11] <eroomde> Randomskk: xubuntu is really nice
[14:11] <eroomde> am finally happy
[14:13] <Laurenceb_> hehe
[14:13] <Laurenceb_> unity sucks
[14:13] <Laurenceb_> 10.04LTS here
[14:16] <eroomde> yeah it does
[14:16] <eroomde> i tried to like it
[14:16] <eroomde> but it's nothin doin really. it's just to tablet and granny friendly
[14:17] <eroomde> everything but about 4 things dissappeared from the settings too
[14:17] <eroomde> xubuntu is much more like gnome 2.x
[14:17] <eroomde> v nice indeed
[14:17] <Laurenceb_> i run 10.04 on 2x 22" monitors at work
[14:17] <Laurenceb_> theres no way unity would work
[14:18] <eroomde> indeed
[14:18] <eroomde> i'm working towards a second monitor :)
[14:18] <eroomde> but not quite yet
[14:18] <daveake_> Just bought 2 more ...
[14:18] <daveake_> ... to go with the 4 I already have :D
[14:18] <eroomde> lol
[14:18] <eroomde> i want my 2nd one to match the first ideally
[14:19] <daveake_> (4 on desktop PC, 2 others on 2 laptops)
[14:19] <eroomde> but i did a silly and got the dell 24 IPS rather than the dell 23 ips
[14:19] <daveake_> Nice
[14:19] <eroomde> and the 24 is 16:10 and costs twice as much as the 16:9 23"
[14:19] <daveake_> These are Samsung 24" 1920x1200
[14:19] <eroomde> just because 16:9 benefits from economies of scale from TV production ig uess
[14:19] <daveake_> I had to go buy some shelving to extend my desk a bit :
[14:19] <daveake_> :D
[14:19] <eroomde> so I can gould have got 2 x 23" for the price of my one 24" :(
[14:20] <eroomde> daveake_: is that going to be 6 monitors then?
[14:22] <Laurenceb_> hmm ips monitors sound good
[14:22] <daveake_> One neat thing I use is a software KVM - it shares a keyboard and mouse amongst n PCs. Then you put the monitors next to each other (or above each other if you like) and when the mouse pointer disappears from a monitor on one PC, it jumps to the next monitor on another PC.
[14:22] <eroomde> they are very nice
[14:22] <Laurenceb_> i have cheapish iiyama ones
[14:22] <eroomde> i must say
[14:22] <eroomde> very crisp and bright and even
[14:22] <daveake_> eroomde Yes, 6 monitors :)
[14:22] <eroomde> gosh
[14:22] <Laurenceb_> iiyama is surprisingly good quality/price
[14:22] <eroomde> are you a day-trader?
[14:22] <daveake_> lol
[14:23] <daveake_> Nah, developer. When you're developing 2 or 3 programs talking to each other, it's nice to have them all visible plus the IDEs visible too
[14:23] Action: Laurenceb_ wishes grep was multicore
[14:24] <daveake_> Like I said, only 4 monitors on the one PC, other 2 are for laptops. One of those will mostly be for TV (the laptop has a USB TV thingy)
[14:25] <daveake_> Terry Pratchett has 6 monitors in a 3x2 arrangement. You can get monitor stands to hold all at once
[14:26] <eroomde> lol
[14:26] <eroomde> i think just the two will do for me
[14:26] <daveake_> :)
[14:26] <eroomde> that's all my gpu can take anyway
[14:27] <cuddykid> only have 1 - but it's big :D
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[14:27] <daveake_> Yeah, I specced this new PC with 2 dual channel video cards
[14:30] <Laurenceb_> how do i control array stride in c?
[14:30] <Laurenceb_> attribute backed doesnt work :-/
[14:30] <Laurenceb_> *packed
[14:31] <SpeedEvil> stride?
[14:32] <Laurenceb_> offset between elements
[14:32] <SpeedEvil> ah
[14:35] <SpeedEvil> http://en.wikipedia.org/wiki/Data_structure_alignment#Typical_alignment_of_C_structs_on_x86 - I don't think there's a way to do it without structs
[14:35] <SpeedEvil> hmm
[14:36] <daveake_> You're doing something like "#pragma pack(1)" ?
[14:36] <SpeedEvil> It may not be very portable
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[14:41] <eroomde> daveake_: when was it that you were thinking of launching next?
[14:41] <daveake_> Sunday 29th
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[14:41] <daveake_> I've applied for that day plus the following weekend
[14:49] <NigelMoby> I've applied for the same dates Dave lol
[14:50] <NigelMoby> 28/29 and 4/5
[14:50] <daveake_> :). Decided what freq? I normally use .650
[14:51] <NigelMoby> both
[14:51] <NigelMoby> dual payload
[14:51] <daveake_> Oh goodie :p
[14:51] <daveake_> Time of day?
[14:51] <NigelMoby> but we should be down by 1pm
[14:52] <NigelMoby> launch window is 8-12
[14:52] <daveake_> My slot is 9am-1pm
[14:52] <cuddykid> David Miller will be 'snowed under' :P
[14:52] <daveake_> lol
[14:52] <NigelMoby> lol
[14:52] <NigelMoby> we can work something out so we don't clash
[14:53] <cuddykid> he completely ignored my last request for permission - if I don't chase him continually then he just doesn't bother!
[14:53] <daveake_> He replied to me after my application to say he'll get it done :)
[14:53] <NigelMoby> Eek, ill email him Monday I think
[14:53] <cuddykid> yeah, chase him up NigelMoby
[14:54] <cuddykid> daveake_: you must be in his good books!
[14:54] <daveake_> :D
[14:54] <cuddykid> They really should implement an online system to apply etc - then he'd just have to approve or disapprove
[14:54] <NigelMoby> was beer involved? lol
[14:54] <daveake_> lol
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[14:55] <daveake_> Same first name; that's gotta help :p
[14:56] <cuddykid> do you guys get bombarded by pilots calling you? On the 2 occasions when I've had permission I've had a fair few ring me up
[14:57] <eroomde> often
[14:57] <eroomde> very student unfriendly
[14:57] <NigelMoby> not personally, but I think its common
[14:57] <eroomde> always at 6.30 on a saturday morning
[14:57] <daveake_> Not really. Probably works out at about 1 per potential launch day. So far I've never had anyone call when I've actually launched.
[14:57] <eroomde> for about 3 years
[14:57] <NigelMoby> lol ed
[14:58] <daveake_> Yeah 6:30 Saturday morning seems favourite :(
[14:58] <cuddykid> yep - they've usually called early in the morning
[14:58] <daveake_> Had one call the day before
[14:58] <cuddykid> in fact, on the whole they've been pretty interested - only had a couple of unfriendly ones
[14:59] <NigelMoby> Wat they say?
[14:59] <daveake_> Not had any unfriendly ones here
[14:59] <cuddykid> ask what I do etc - what's in the payload, how do I retrieve
[14:59] <daveake_> Mostly they're pleased it's OK for them to fly nearby :)
[14:59] <NigelMoby> Ooo
[14:59] <daveake_> Not had any questions other than "are you launching today?"
[15:00] <cuddykid> had a helicopter pilot ring me up once and he was on the phone for a good 5mins going on and on lol
[15:01] <daveake_> Do seem to get some fly-pasts though
[15:01] <NigelMoby> lol I'm launching a stone throw from cardiff heliport
[15:01] <NickB1> would it make any sense putting my playload in a sports plane as a test?
[15:01] <NickB1> haha
[15:01] <NickB1> payload
[15:02] <cuddykid> hmm - probably not, as it won't be subject to alt (>18km) and temps, but no harm in doing so
[15:02] <NickB1> indeed
[15:02] <NickB1> but purely to see the received power
[15:03] <NickB1> and a test for gps code
[15:03] <NickB1> but I think the play is kind of a faraday cage so
[15:03] <NickB1> plane
[15:03] <cuddykid> yeah, go for it :D
[15:11] <priyesh> and recommendations for a siren on a HAB payload?
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[15:16] <NigelMoby> nee na nee na ...?
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[15:19] <priyesh> yeah
[15:19] <priyesh> nee na nee na
[15:19] <daveake_> I use a single-tine piezo, and switch that on and off. Maplin do several including some pretty loud ones
[15:19] <daveake_> tone
[15:19] Nick change: daveake_ -> daveake
[15:20] <NigelMoby> I got a really loud 1 from maplins.
[15:21] <NigelMoby> but yeah just cycle the pin high/low should be ok priyesh
[15:21] <priyesh> okay.. got a link to the one from maplins?
[15:22] <NigelMoby> *checks*
[15:22] <daveake> Trying to, but their site is a dog right now (here at least)
[15:22] <priyesh> :P
[15:22] <NigelMoby> http://mobile.maplin.co.uk/module.aspx?moduleno=3219
[15:22] <NigelMoby> very loud
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[15:23] <daveake> http://www.google.co.uk/url?sa=t&rct=j&q=maplin%20loud%20piezo&source=productsearch&cd=2&ved=0CEMQgwgwAQ&url=http%3A%2F%2Fwww.maplin.co.uk%2Fdc-operated-piezo-buzzer-3217%3Fc%3Dfroogle%26u%3D3217%26t%3Dmodule&ei=550RT5-GBoaQ8gPptNDQAw&usg=AFQjCNFxGoabF9tuT9mNWgoTwdfxzLEJMg&sig2=lv_lAkgwTCP3frpkjLKy5g
[15:24] <NigelMoby> cr34m is product code
[15:24] <priyesh> NigelMoby: thanks :)
[15:24] <NigelMoby> no
[15:24] <NigelMoby> np*
[15:24] <danielsaul> NigelMoby: daveake: What voltages were you using with them...?
[15:25] <NigelMoby> I used 3.3
[15:25] <priyesh> NigelMoby: perfect.. that's what we're using
[15:25] <danielsaul> Good, good - priyesh, we're going with that one :P
[15:25] <priyesh> sutton -> 2 in stock
[15:25] <NigelMoby> should be fine, it made the gf yell at me to turn it off so.....lol
[15:25] <danielsaul> haha
[15:26] <priyesh> haha
[15:28] <daveake> danielsaul - first one I just connected it to a PP3 :-D. It was very very loud. So much so that I put some gaffer tape on it before launch. I then forgot to take the tape off, but we still managed to hear it from 50 metres away after it landed!
[15:28] <priyesh> wow
[15:28] <NigelMoby> lol Dave
[15:28] <danielsaul> Actually, we could do that too priyesh... Not as if the school is short of PP3s
[15:28] <priyesh> yeah
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[15:30] <daveake> I did that because I hadn't got round to controlling from the computer
[15:30] <daveake> The piezo and Hi Viz tape made it MUCH easier to find the thing
[15:40] <fsphil-laptop> this florescent blue paint isn't all that florescent
[15:41] <fsphil-laptop> does look good though
[15:42] <fsphil-laptop> will have to get some polystyrene blocks and be all artistic like
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[16:56] Nick change: daveake_ -> daveake
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[16:57] <fsphil> I've managed to make a space in the room. yays
[16:57] <fsphil> seems I have a carpet. wonder when that was put there
[16:57] <daveake> lol
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[17:00] <daveake> I can see the carpet here too. In amongst the bits of polystyrene
[17:01] <fsphil> oh that's always fun :)
[17:01] <fsphil> did you end up covering yourself?
[17:01] <fsphil> I looked like I'd just stepped in from a blizzard
[17:01] <SpeedEvil> Keep a water sprayer.
[17:01] <SpeedEvil> Keep everything damp, and there is no problem at all.
[17:03] <daveake> It's fine actually :-). Only have a few bits from where I cut some grooves for the ground plane wires. All the rest of the cuttings were done on the hot wire table cutter
[17:04] <number10> did you get some of that funky paint
[17:04] <daveake> pink
[17:04] <number10> nice
[17:04] <number10> a few yellow spots would make a nice contrast
[17:04] <daveake> That's for the next Buzz; this one is a larger payload so it'll be good old grey gaffer tape
[17:05] <daveake> Mr Blobby?
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[17:05] <SpeedEvil> A sharp fine-bladed lightly oiled knife is as clean as a hot-wire cutter.
[17:05] <fsphil> blobby blobby!
[17:05] <number10> I was not implying that - but the color scheme would be about that
[17:07] <daveake> SpeedEvil I'm using a sharp blade; haven't tried the oil thing though
[17:08] <SpeedEvil> I have a lovely carving knife.
[17:08] <SpeedEvil> It's ~1.2mm*30mm*250mm sheet stainless, with a sharp edge.
[17:08] <SpeedEvil> Very handy for all sorts of things.
[17:08] <SpeedEvil> Cuts frozen stuff much better than thick knives
[17:10] <cuddykid> very cheap ublox -> the guy has bought 500 of them - says he can do them at £12.50 each if large enough Q bought -> http://www.ebay.co.uk/itm/UBLOX-LEA-5S-GPS-receiver-module-Brand-New-/250956305493?pt=UK_AudioTVElectronics_GPSSystems_GPSSystems&hash=item3a6e295455#ht_1399wt_1413
[17:12] <daveake> Is PVA glue good for gluing the polystyrene? I have some UHU polystyrene glue from before, but maybe not enough
[17:12] <cuddykid> daveake: hot glue works brilliantly
[17:12] <daveake> Oh yes, I have plenty of that :)
[17:13] <SpeedEvil> warm melt glue works brilliantly
[17:13] <SpeedEvil> as long as you don't let the gluegun warm up too much
[17:13] <SpeedEvil> hot-melt - not so well.
[17:13] <daveake> Ta
[17:13] <SpeedEvil> Silicone sealant works well.
[17:13] <SpeedEvil> But takes some time to set
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[17:47] <jcoxon> afternoon
[17:49] <cuddykid> hi jcoxon - spotted these earlier on ebay - potentially cheap if order it largish quantities - http://www.ebay.co.uk/itm/UBLOX-LEA-5S-GPS-receiver-module-Brand-New-/250956305493?pt=UK_AudioTVElectronics_GPSSystems_GPSSystems&hash=item3a6e295455#ht_1399wt_1413
[17:51] <jcoxon> oh cool
[17:51] <jcoxon> ublox 5s
[17:52] <cuddykid> yup, not sure how easy to integrate/useful they are to us but at £12.50 a pot the cheapest I've seen
[17:52] <jcoxon> you'll need a breakout
[17:52] <cuddykid> yeah
[17:52] <jcoxon> similar to Upu's ublox 6 breakout
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[18:18] <Laurenceb_> ublox5?
[18:18] <Laurenceb_> booorrrring
[18:18] <Laurenceb_> :P
[18:21] <jcoxon> hehe
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[18:56] <cuddykid> Upu: it's probably something I'm doing, but when I try to load your ava eagle library it says "invalid data in ava.lbr"
[19:22] <NigeyS> hmm
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[19:28] <cuddykid> just cloned it and updated eagle to latest (mac) - still doesn't work :(
[19:31] <fsphil> win/mac difference?
[19:32] <NigeyS> cuddykid, try the ava.lbr thats in the project swift repo, it should be the same
[19:32] <cuddykid> hope not - it's a bit silly on eagle's part if there is
[19:32] <cuddykid> will do NigeyS :)
[19:33] <fsphil> eagle often does silly things it seems
[19:35] <cuddykid> yay, that worked, thanks NigeyS
[19:35] <jcoxon> okay, on the RFM22b the Tx_Ant and Rx_Ant pins make a massive difference
[19:35] <fsphil> strange that ;)
[19:35] <fsphil> they don't share the same antenna, that's weird
[19:36] <fsphil> I guess they can be shorted
[19:36] <jcoxon> so if you connect them to the GPIO0 and GPIO1 as suggested
[19:36] <jcoxon> basically at 0.5m range from my ft790r with no antennas it doesn't register on the power meter
[19:36] <jcoxon> set up the GPIOs correctly on software and it goes to S9
[19:37] <fsphil> you connect the antenna pins to the gpio pins?
[19:37] <jcoxon> they aren't ANT pins
[19:37] <jcoxon> they are control pins
[19:37] <jcoxon> for an onboard switch i think
[19:40] <jcoxon> bbl
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[19:45] <Laurenceb_> yes
[19:45] <Laurenceb_> oh hes gone
[19:45] <Laurenceb_> they connect to the rf switch
[19:46] <Laurenceb_> you need to connect it to the output pins that you setup to drive the switch - hteres a register for that
[19:53] <Upu> cuddykid on github, click that ava.lbr then click raw to download it
[20:03] <Upu> cuddykid second thoughts I'm using Eagle 6.1
[20:04] <Upu> so format will be wrong
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[20:35] <danielsaul> Right, Ill get on with the citrus fruits PCB then :D
[20:35] <danielsaul> Urgh, wrong channel
[20:36] <Darkside> lol
[20:40] <fsphil> yay, fruits
[20:40] <danielsaul> :)
[20:41] <danielsaul> Going to power the next apex off lemons ;)
[20:45] <Laurenceb_> fruits of the loins
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[22:17] <Lunar_Lander> hello
[22:18] <fsphil> hiya kev
[22:18] <Lunar_Lander> how are you?
[22:19] <fsphil> all good :) listening to some good tunes. you?
[22:20] <Lunar_Lander> same here
[22:20] <Lunar_Lander> and thinking about thermodynamics
[22:20] <Lunar_Lander> :)
[22:24] <fsphil> always worth thinking about!
[22:26] <Lunar_Lander> :)
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[22:27] <Lunar_Lander> do you remember the eurovision song contest of 2010?
[22:27] <fsphil> I watched it, that's all I remember
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[22:28] <Lunar_Lander> yea
[22:28] <Lunar_Lander> because earlier I was thinking about our entry
[22:28] <Lunar_Lander> who won
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[22:28] <Lunar_Lander> but I saw a youtube video in which someone analyzed the song and pointed out the weaknesses
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[22:31] <daveake> weaknesses in a eurovision song? shocking ....
[22:31] <Lunar_Lander> xD
[22:31] <fsphil> there've been a few I've liked
[22:32] <SpeedEvil> Just say screw-it, and put on in the qualifying week, the number 1 act in the UK singles chargt that is a UK band.
[22:32] <fsphil> being on a talent show should disqualify them from that though
[22:33] <SpeedEvil> Indeed. You've got to have no talent to do Eurovision.
[22:34] <daveake> Payload now glued together :)
[22:34] <SpeedEvil> There is a rule which forbids any song being entered which has been previously commercially released or broadcast in public before a certain date relative to the Contest in question
[22:34] <SpeedEvil> bah
[22:34] <Lunar_Lander> yea
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[22:35] <daveake> hotmelt did the job nicely
[22:35] <fsphil> is that a eurovision song?
[22:35] <SpeedEvil> :)
[22:35] <daveake> lol
[22:35] <daveake> boom hab a hab
[22:36] <Lunar_Lander> xD!
[22:36] <fsphil> not sure I want to see that
[22:36] <SpeedEvil> It would be appropriate for some of the costumes.
[22:36] <Lunar_Lander> ROFL
[22:36] <fsphil> haha
[22:36] <Lunar_Lander> we can use Hwyoee balloons for the costumes
[22:36] <daveake> Or those silver foil ones
[22:36] <fsphil> "Happy Birthday"
[22:37] <Lunar_Lander> xD
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[22:38] <Upu> oh yay
[22:38] <daveake> "Would you like to ride in my beautiful balloon" ...
[22:38] <daveake> Catchy
[22:38] <daveake> lol
[22:40] <Lunar_Lander> XD
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[22:44] <Dan-K2VOL> daveake that is a truly awful song
[22:44] <Dan-K2VOL> up up and away, by the Fifth Dimension
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[22:44] <Dan-K2VOL> who also brought the world the atrocity of Age of Aquarius
[22:44] <daveake> :D
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[22:49] <SpeedEvil> Hmm.
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[22:50] Action: SpeedEvil imagines a latex costume which halfway through the song all the performers move to opposite corners of the stage, and it then inflates to 22m in diameter, and bursts.
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[22:54] <Lunar_Lander> ROFL!
[22:55] <SpeedEvil> Clearly, it has to be over a jaunty RTTY beat.
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[22:59] <Lunar_Lander> xD yeah
[23:04] <Lunar_Lander> I was told that the Venus GPS needs a voltage divider on the line that goes into the GPS RX
[23:04] <Lunar_Lander> is this setup correct? http://s.gullipics.com/image/r/5/k/5zttcg-j083hu-ykzd/img.png
[23:04] <SpeedEvil> the GPS RX is 3.3v?
[23:05] <fsphil> you only need a voltage divider if your gps uses 3.3v, and your microcontroller uses 5v
[23:05] <SpeedEvil> And that looks more-or-less right, thouh I'd go with a 180R resistor
[23:05] <Lunar_Lander> yes
[23:06] <Lunar_Lander> 3.3V
[23:06] <SpeedEvil> (otherwise it's 3.4v)
[23:06] <fsphil> also, do you need the TX line?
[23:07] <Lunar_Lander> the one from Arduino to GPS?
[23:07] <daveake> Yes. Only needed if you're sending commands to the GPS
[23:08] <Lunar_Lander> ah
[23:09] <Lunar_Lander> I don't think so
[23:09] <Lunar_Lander> It's the Venus GPS by Sparkfun btw
[23:09] <daveake> After my first flight I switched from to Arduino Mini Pro 3V3, to save having to add those dividers for connections to GPS, SD card, pressure sensor etc.
[23:09] <Lunar_Lander> yea
[23:09] <fsphil> the older venus chips won't work above 18km I think
[23:10] <Lunar_Lander> I already uploaded the firmware that sparkfun offers on the site
[23:10] <fsphil> ah, sorted
[23:10] <Lunar_Lander> daveake: in terms of sensors
[23:10] <Lunar_Lander> up to now I connected my sensors directly
[23:10] <Lunar_Lander> and judging from the data that worked
[23:10] <Lunar_Lander> do I need dividers anyway?
[23:11] <Lunar_Lander> (I mean all the tutorials for the sensors never mentioned dividers=
[23:12] <fsphil> if the sensor is powered from 5v, then no
[23:12] <fsphil> (I'm not daveake, though I play him on IRC sometimes)
[23:13] <Lunar_Lander> xD
[23:13] Action: daveake returns from making a cuppa
[23:13] <Lunar_Lander> the Bosch barosensor is 3.3V
[23:13] <Lunar_Lander> but on the tutorials, they connect the data lines directly
[23:13] <Lunar_Lander> is it because it is I2C?
[23:13] <daveake> Depends on the device. Some 3V3 devices do have 5V-tolerant inputs.
[23:13] <SpeedEvil> The key is that you puillup I2C to the lowest supply voltage
[23:13] <SpeedEvil> then it 'just works'
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[23:14] <SpeedEvil> (if the high voltage threshold of the chip on the high voltage line is high enough that the low-voltage supply will activate it
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[23:15] <Lunar_Lander> ah
[23:20] <fsphil> 1.8v seems to be popular now too
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[23:24] <Lunar_Lander> yeah
[23:24] <Lunar_Lander> that is like the third important voltage in electronics
[23:25] <fsphil> I just had a AA battery go pop. it was sitting on the desk upright, *POP* and fell over.
[23:25] <daveake> !!
[23:25] <fsphil> no visible marks
[23:25] <SpeedEvil> Chemistry?
[23:26] <fsphil> probably, although I can't rule out black magic
[23:26] <Lunar_Lander> ohh
[23:26] <daveake> I think he means "what chemistry was the battery?" :)
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[23:26] <Lunar_Lander> xD
[23:26] <fsphil> I've had lots of the same batteries just melt or leak. they're truly awful batteries
[23:26] <fsphil> aaah
[23:27] <fsphil> lemme see
[23:27] <daveake> and make?
[23:27] <daveake> (so I can avoid them) :)
[23:27] <fsphil> all it says is that it's 0% mercury
[23:28] <fsphil> there's a little 'don't dispose in bin' icon, and Pb written below it. so there's lead in there
[23:28] <SpeedEvil> http://fatpita.net/?i=5480
[23:28] <fsphil> I bought them from B&M's
[23:29] <fsphil> got about 20, so far 5 have melted
[23:30] <fsphil> finally uploaded, well overdue: http://www.youtube.com/watch?v=keIlNYWvmyc
[23:33] <fsphil> next time we need those little clip-on mics
[23:34] <SpeedEvil> fsphil: If it's an AA - that probably means no lead - and no hg means it's alkaline
[23:35] <SpeedEvil> typically
[23:35] <SpeedEvil> B&M?
[23:38] <fsphil> these guys: http://www.bmstores.co.uk/
[23:38] <fsphil> cheap crap
[23:40] <SpeedEvil> Their website strikes me as like dealextreme, but less professional.
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[23:41] <SpeedEvil> also - if it's under 6 months since you bought them, it's up to the store to prove that they were faulty before refunding.
[23:42] <Lunar_Lander> thanks fsphil
[23:42] <Lunar_Lander> You just finally made me see james coxon
[23:42] <Lunar_Lander> :)
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[23:44] <fsphil> you can see me too, briefly
[23:44] <fsphil> well, the back of my head
[23:45] <Lunar_Lander> xD!
[23:45] <Lunar_Lander> in James' video?
[23:45] <fsphil> not sure, about half of them
[23:45] <Lunar_Lander> ah
[23:46] <fsphil> I start the camera recording, then annoy everyone trying to get back to my seat
[23:46] <Lunar_Lander> yea
[23:46] <Lunar_Lander> you're not in olivers video
[23:47] <fsphil> some of them I started early enough, so I could cut it out
[23:47] <Lunar_Lander> xD yea
[23:49] <Lunar_Lander> thanks for uploading fsphil
[23:50] <Lunar_Lander> YAY!
[23:50] <Lunar_Lander> in the outreach video you are
[23:50] <Lunar_Lander> looks like James Blunt
[23:50] <Lunar_Lander> xD
[23:50] <fsphil> um
[23:57] <fsphil> arg, just found two batteries with a fuzzy white material on top
[23:57] <Lunar_Lander> damn
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[00:00] --- Sun Jan 15 2012