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[01:51] <Lunar_Lander2> fsphil here?
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[07:16] <m1x10> http://slaros.blogspot.com/2011/05/main-flight-system-3rd-revision-040511.html
[07:16] <m1x10> :)
[07:16] <m1x10> morning
[07:16] <SamSilver> morning to U 2
[07:26] <Upu> morning
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[07:38] <SamSilver> bbl
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[08:11] <cardg00> hi
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[08:26] <fsphil> morning all
[08:32] <GW8RAK> Morning fsphil
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[08:41] <fsphil> another lovely dull day here :)
[08:53] <Laurenceb_> think ive solved the gps issue
[08:53] <Laurenceb_> its enable pin is shared with the jtag port
[08:53] <Laurenceb_> need to disable jtag
[09:15] <eroomde> morning all
[09:16] <Laurenceb_> hi
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[09:20] <Laurenceb_> eroomde: http://imgur.com/id8jyl&3XpXr <- take that badger XD
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[09:20] <Laurenceb_> got the last assembly (apart from headers) done yesterday
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[09:21] <eroomde> nice work!
[09:21] <eroomde> badger is on v2 tho :p ...
[09:21] <Laurenceb_> heh
[09:21] <Laurenceb_> yeah theres quite a few things i want to change
[09:22] <Laurenceb_> but no screw ups so far...
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[09:22] <eroomde> that's really not bad
[09:22] <eroomde> not neading bodge wires on a first spin
[09:22] <Laurenceb_> ST now have a magno+accel thats half the size for e.g.
[09:22] <Laurenceb_> and ublox6 has come out.. etc etc
[09:24] <Laurenceb_> but all the crazy stuff works perfectly - smps is really nice
[09:24] <Laurenceb_> ive taken it from 1.9v all the way up to 15
[09:27] <Darkside> ok, webcam testing
[09:28] <Randomskk> Laurenceb_: looking pretty great
[09:28] <Randomskk> clearly need a photo of the other side, too :P
[09:28] <Darkside> http://j-tv.me/imHvoy
[09:29] <Randomskk> give us a wave
[09:29] <Laurenceb_> Randomskk: first image, second image
[09:30] <Randomskk> Laurenceb_: oh yea
[09:30] <Randomskk> sweet
[09:30] <Randomskk> Darkside: nice swirly things
[09:31] <Laurenceb_> oh its adverts
[09:31] <Randomskk> Laurenceb_: haha yea I was confused at first too
[09:31] <Darkside> frucking adverts
[09:31] <Laurenceb_> thought Darkside was playing music
[09:31] <Darkside> lol
[09:31] <Darkside> call into IRLP node 6214 if you can :-)
[09:32] <Laurenceb_> all i need now is a pitot tube
[09:32] <Randomskk> I have no idea how I'd do that
[09:32] <Laurenceb_> ive been trying to design one with pen parts... no luck so far
[09:32] <Laurenceb_> guess i should try and find a lathe
[09:33] <Darkside> frack
[09:33] <Darkside> something just broke
[09:33] <Laurenceb_> the frakking broke?
[09:33] <Darkside> the VM which i'm running the stuff in
[09:33] Action: Laurenceb_ ignites his tapwater
[09:34] <Darkside> i cant use the webcam in OSX
[09:34] <Darkside> so i running it in windows in a VM
[09:34] <Darkside> hold on
[09:35] <Darkside> im gonna boot up the car-PC and run the stream on that
[09:35] <Laurenceb_> Randomskk: any idea how to disable JTAG?
[09:37] <Randomskk> uhm
[09:38] <Laurenceb_> nvm then ill rtfm
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[10:12] <fsphil> my new HF loop antenna isn't receiving much of anything today
[10:17] <Laurenceb_> ah got it working now
[10:18] <Randomskk> what did you have to do?
[10:18] <Laurenceb_> but fsa03 is only responding to NMEA commands
[10:18] <Laurenceb_> remapconfig
[10:18] <Laurenceb_> stupid fsa03
[10:18] <Laurenceb_> maybe i need to setup usb input first or something
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[10:18] <Laurenceb_> *ubx
[10:20] <Laurenceb_> http://ukhas.org.uk/guides:falcom_fsa03 <- theres they send in ubx
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[10:20] <Laurenceb_> although the first ubx command turns on ubx... intriguing
[10:21] <mattltm_mob> Kent LUG live stream - http://www.ustream.tv/channel/klug-live
[10:22] <Laurenceb_> if i have #define one="abc" and #define two="def"
[10:22] <Laurenceb_> then i have uint8_t c=one two;
[10:22] <Laurenceb_> does c have 0x00 in the middle after abc ?
[10:23] <Randomskk> probably
[10:23] <Laurenceb_> thats probably not helping then
[10:24] <Randomskk> c = {'a', 'b', 'c', 'd', 'e', 'f'};
[10:24] <Randomskk> really should only use "" for things that should be null terminated
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[10:51] <fsphil> it's teasing me again with the nice predictions for next week: http://habhub.org/predict/#!/uuid=3fb98df577f88740bd7a4d1cb152dff6c86d6ad8
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[11:10] <cuddykid> oh that would be good fsphil!
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[11:11] <fsphil> would be but I'm not getting my hopes up :)
[11:11] <fsphil> I've been down this road before lol
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[11:11] <cuddykid> lol
[11:12] <cuddykid> wonder what the 1st week of july looks like... hmmmm... lol
[11:12] <cuddykid> thats my planned launch period!
[11:12] <fsphil> if you're not near the coast you should be fine :)
[11:15] <cuddykid> problem is the notam conditions.. apparently I'm surrounded by restriced air space :(
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[11:16] <cuddykid> so the only condition is W/SW and a max range of ~20miles
[11:17] <cuddykid> however, if it went a bit further west it would probably end up on the top of snowdonia lol
[11:17] <fsphil> I wouldn't count on that happening too often
[11:17] <cuddykid> yeah, thats the prob :(
[11:17] <cuddykid> might go to cambridge though
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[11:19] <fsphil> far to go?
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[11:25] <cuddykid> about 3hrs, not too bad, but would be a last resort
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[11:31] <Laurenceb_> this is odd
[11:31] <Laurenceb_> my fsa03 will allow me to reconfigure messages but not the baudrate
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[11:37] <Laurenceb_> $PUBX,41,1,0001,0001,38400,0*14\r\n doesn work
[11:37] <Laurenceb_> $PUBX,40,RMC,0,0,0,0,0,0*47\r\n
[11:37] <Laurenceb_> does
[11:37] <Laurenceb_> im confused
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[11:51] <SpeedEvil> Oooh - progress then!
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[11:59] <Laurenceb_> kind of
[11:59] <Laurenceb_> im stuck at configuring the gps
[11:59] <Laurenceb_> it certainly isnt behaving like the instructions on the wiki
[12:00] <Laurenceb_> i can turn off/on nmea, but cant switch to ubx or control baud rate
[12:00] <Laurenceb_> maybe i have to save the config or something... but theres no flash on this module
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[12:02] <SpeedEvil> Have you used a similar module before?
[12:03] <Laurenceb_> yes, but flash based
[12:05] <Laurenceb_> if i can create a passthrough mode to usart2, then fire up ucenter in wine and simlink it to the port
[12:05] <Laurenceb_> i could debug like that
[12:06] <SpeedEvil> hmm
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[12:09] <Laurenceb_> would help if the datasheet wasnt nda
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[12:15] <mattltm-alt> Ive just been having a coffee with one of the Genesis tema :)
[12:15] <mattltm-alt> *tema
[12:15] <mattltm-alt> Dugh!
[12:15] <Laurenceb_> Genesis?
[12:15] <mattltm-alt> *team
[12:15] <mattltm-alt> http://genesismission.jpl.nasa.gov/mission/statusupdate_qtr2_03.html
[12:16] <Laurenceb_> oh swet
[12:16] <mattltm-alt> an old project
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[12:16] <mattltm-alt> Had no idea until I started talking about UKHAS and he siad "Oh, 100,000ft? Iv'e been a bit higher."
[12:17] <SpeedEvil> Neat.
[12:18] <mattltm-alt> He's at the Kent LUG meeting.
[12:18] <mattltm-alt> curently being shown live on ustream
[12:19] <mattltm-alt> :)
[12:20] <Laurenceb_> ooh nice - you can add eeprom on the ublox i2c to save config
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[12:23] <cuddykid> who can alter the xml files on the DL? I've pinged jonsowman however he must be away however I wanted to try and test later today! :)
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[12:32] <Laurenceb_> aha jcoxon has fsa03 config code
[12:33] <Laurenceb_> hes got some long delays in there... maybe it needs time to respnd
[12:33] <Laurenceb_> SpeedEvil: your single ducted rotor vtol idea - this board should be capable of running it
[12:34] <Laurenceb_> if you went for pwm servos it can only run 4
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[12:37] <Laurenceb_> so maybe 3 fins in the airstream at 120 degrees
[12:38] <SpeedEvil> Hmm.
[12:38] <SpeedEvil> :)
[12:39] <SpeedEvil> Or mixing externally I suppose.
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[12:39] <Laurenceb_> the orientation of the gps ant is actually a bonus for such a design
[12:40] <Laurenceb_> its slightly annoying for fixed wing
[12:40] <SpeedEvil> AIUI - the new regulations as of last year? make the idea a lot less legal than it once was arguably.
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[12:45] <SpeedEvil> I'm now wondering also about weight-shift-flapping.
[12:46] <SpeedEvil> With rigid wings (other than ailerons).
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[12:53] <cuddykid> 8 B type temp sensors from maxim arrived today :)
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[12:58] <cuddykid> where does everyone get their servos? any particular place?
[12:59] <russss> I ordered some servos from dealextreme once. They took 11 months to arrive.
[13:00] <fsphil> that makes me feel better about the 6 months my lasers took
[13:00] <cuddykid> :O
[13:00] <cuddykid> won't be ordering from them then!
[13:00] <fsphil> half the order arrived in two weeks though, the rest took many months
[13:00] <fsphil> and my other orders where all under two weeks
[13:02] <Randomskk> if you go to sparkfun and look for their UK distributors there are some great places
[13:02] <Randomskk> http://www.hobbytronics.co.uk/ were good when I ordered stuff from them
[13:21] <cuddykid> thanks
[13:21] Nick change: ZarkCow -> DarkCow
[13:22] <eroomde> Randomskk: what's exam eta?
[13:28] <Randomskk> exams 6th to 10th june
[13:33] <Laurenceb_> good luck
[13:33] <Randomskk> thanks :p should probably be revising now
[13:33] <Laurenceb_> lol i know the feeling
[13:34] Action: Laurenceb_ made a revision wall
[13:34] <Darkside> hmm i still need to take my advanced exam
[13:34] <cuddykid> so should I lol.. doing a bit of c4 and habing..
[13:34] <Darkside> but i shouldn't need to do a lot of revision for that
[13:34] <cuddykid> though c4 is easy lol
[13:34] <Laurenceb_> notes on different topics on different walls of my room
[13:35] <Laurenceb_> got kind of mental after a while
[13:35] <cuddykid> Laurenceb_: got that too!
[13:35] <Randomskk> I have a revision floor
[13:35] <Randomskk> :/
[13:35] <Laurenceb_> as in when i got onto the ceiling
[13:35] <cuddykid> whole room is covered in stickys.. then got hab stuff in corner!
[13:35] <Darkside> loll
[13:35] <cuddykid> haha
[13:35] <Darkside> i'm gonna have to memorise the regs...
[13:35] <Darkside> theory i should be fine with
[13:35] <Darkside> but regs....
[13:37] <Laurenceb_> i ended up staying in my room for several days at a time surviving on biscuits and red bull
[13:37] <eroomde> so I spent this last week at the AIAA Aerodynamic Decelerators conference in Dublin
[13:37] <Laurenceb_> thats probably not a good way to revise
[13:37] <Laurenceb_> oh sweet
[13:38] <eroomde> which is a long winded way of saying 'the parachutes conference'
[13:38] <eroomde> + airbags etc
[13:38] <Laurenceb_> heh
[13:38] <eroomde> met all the jpl guys who did pathfinder and spirit and op
[13:38] <eroomde> and the guys doing orion currently
[13:38] <eroomde> it's a very small world, it turns out!
[13:38] <Darkside> oh cool
[13:39] <eroomde> fascinating stuff, and some good talks and papers
[13:39] <Darkside> parachutes on another world!
[13:39] <eroomde> yep
[13:39] <Laurenceb_> i hope the beagle team wasnt there
[13:39] <eroomde> my past and probably next employer did the huygens parachute system
[13:39] <eroomde> it's really sexy stuff
[13:39] <Darkside> wouldn't have been the parachutes fault Laurenceb_
[13:40] <eroomde> nope, they like their failures
[13:40] <eroomde> failures are part and parcel of parachute systems - they're incredibly complex things
[13:40] <eroomde> Darkside: probably was the parachute's fault infact
[13:40] <Darkside> interesting
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[13:51] <Chingy> Hi all :)
[13:52] <eroomde> hello Chingy
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[14:09] <cuddykid> chinese ebay sellers never fail to impress... new arduino uno for £15
[14:12] <BrainDamage> the components inside it are roughly worth 5£
[14:12] <BrainDamage> so nothing impressive
[14:12] <eroomde> right, what's a good mouse that people have used with ubuntu?
[14:13] <eroomde> logitech's wireless offerings seem to hang every so often in a way that makes them basically useful for any kind of design wortk
[14:13] <Randomskk> I like wired mice
[14:14] <eroomde> yes i think i may switch to one
[14:14] <Randomskk> but there's rarely a question of them working or not
[14:14] <Randomskk> my logitech g5 is very nice and I've had it for something like four or five years now I guess
[14:14] <eroomde> Randomskk: we got best student paper at the conference!
[14:14] <Randomskk> nice! well done :D
[14:14] <eroomde> lots of interest in it from the jpl guys
[14:15] <Randomskk> haha so long as we don't become nasa subcontractors :P
[14:15] <SpeedEvil> I'm currently using my IBM space-saver keyboard witjh internal trackpoint.
[14:15] <SpeedEvil> PS/2
[14:15] Action: SpeedEvil lives on the trailing edge.
[14:15] <eroomde> SpeedEvil: doing pcb design with a nipple would drive me mad
[14:15] <SpeedEvil> eroomde: Yeah - I do little CADdy stuff.
[14:16] <SpeedEvil> I tend to grab my 'proper' mouse for that.
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[14:17] <Randomskk> so if I have, say, an RF OUT and an RF GND pin, and the RF OUT goes through some complicated filter which has capacitors going to ground, and then eventually to my SMA connector which of course as ground and signal pins...
[14:18] <Randomskk> where should I connect RF GND and GND?
[14:18] <SpeedEvil> Generally, you try to keep all the circulating current that is RF away from the 'normal' system ground.
[14:18] <Randomskk> would you propose not connecting RF GND and GND at all?
[14:19] <SpeedEvil> You generally have to.
[14:19] <SpeedEvil> Do you have a circuit diagram?
[14:19] <Randomskk> https://randomskk.net/u/ADF7012.pdf is mostly up to date
[14:20] <SpeedEvil> So join all of the RF bits to one close-ground point, and then connect that to hte main system ground.
[14:20] <SpeedEvil> Ah
[14:20] <Randomskk> would, say, the SMA ground pins be an appropriate place to connect them up?
[14:20] <SpeedEvil> Do they have any recommended PCB
[14:21] <Randomskk> that would be too easy
[14:21] <Randomskk> I wouldn't be asking the question :P
[14:22] <SpeedEvil> How many laruyers on the PCB?
[14:22] <Randomskk> two
[14:22] <SpeedEvil> If you can do a ground-plane, then that will probably work
[14:22] <Randomskk> the entire bottom layer is an unbroken ground plane
[14:23] <Randomskk> well with one very small exception
[14:23] <SpeedEvil> I'd just go with that then.
[14:23] <Randomskk> so, what, route RF GND on the top, then via it to ground where?
[14:23] <SpeedEvil> Two options.
[14:24] <SpeedEvil> Either you do all the RFy stuff - ground of C15, C16, C17 to a seperate ground, and then bring it back to rf_gnd
[14:24] <SpeedEvil> Or in this case, I'd just put a via and take it straight to ground from the chip.
[14:24] <SpeedEvil> This is 433?
[14:24] <Randomskk> yea.
[14:25] <Randomskk> so a via at the chip's rf_gnd to ground, and then the rf filter stuff also via to ground?
[14:25] <SpeedEvil> yes
[14:25] <Randomskk> so the connection between the chip's rf gnd and the filter's gnd is the ground plane?
[14:25] <SpeedEvil> If the board is a lots smaller than 1/4 wavelength - things become rather simpler.
[14:25] <SpeedEvil> yues
[14:25] <Darkside> i've also seen separate ground planes for RF and digital, linked by a ferrite bead
[14:25] <Darkside> SMD
[14:25] <SpeedEvil> That too.
[14:25] <Darkside> or some inductor
[14:26] <Matt_soton> http://www.maxim-ic.com/app-notes/index.mvp/id/4636
[14:26] <SpeedEvil> I'd hesitate in this issue, as rf gnd is one puin on the IC.
[14:26] <SpeedEvil> The alternative is to build the RF filter round the ground pin
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[14:26] <Randomskk> Matt_soton: thanks
[14:26] <Darkside> alternatively just don't care
[14:26] <SpeedEvil> Basically.
[14:26] <Darkside> as it will probably work anyway
[14:26] <Randomskk> Darkside: haha basically
[14:26] <SpeedEvil> Indeed.
[14:26] <Blackover> Hi, mates!
[14:26] <eroomde> we used wee inductors to isolate the gps rf front end on badger 2
[14:26] <SpeedEvil> A ground plane solves lots of problems.
[14:26] <eroomde> i did a star ground topology
[14:27] <SpeedEvil> It's when you're trying to do this SS that issues happen
[14:27] <Matt_soton> Randomskk: do u intend to leave any space for the cap/crystal pulling that jonsowman is trying with that other IC?
[14:27] <Randomskk> Matt_soton: nah. this one can do the shifts we want directly
[14:27] <Randomskk> it's the second approach we're trying
[14:27] <Matt_soton> the thing being with that one is the minimuim shift is too large for mfsk
[14:27] <Randomskk> even so, the board has like 5x more passives than the crystal pulling, grr
[14:28] <Randomskk> Matt_soton: yea. fine for rtty though
[14:28] <Matt_soton> yea, depends what u want it for
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[14:28] <Randomskk> if the crystal pulling works well it's smaller, neater and can do mfsk so we'll go with it
[14:28] <Matt_soton> could even goto 173MHz, or upto 868
[14:28] <Randomskk> indeed
[14:29] <Randomskk> same pcb too, just swap out some caps and inductors
[14:29] <Matt_soton> the analog part seems more flexable when it comes to programming frequency, and seems to be the same price
[14:29] <Matt_soton> u could protentally reprogram the analog part to compenstate for temperature related drift too?
[14:30] <Randomskk> Matt_soton: yea. its output frequency is adjustable in steps of fstep via an 11 bit register, so
[14:30] <Randomskk> like 200khz programmable shift
[14:30] <Randomskk> should be enough to cover temperature drift
[14:30] <Randomskk> annoyingly large jumps though
[14:30] <Randomskk> still
[14:31] <Blackover> May you advise me smallest SD logger library for ATmega328p?
[14:31] <Blackover> I have this shield http://www.sparkfun.com/products/544\
[14:31] <Blackover> http://www.sparkfun.com/products/544
[14:32] <eroomde> Blackover: do you want a filesystem?
[14:32] <eroomde> if not then you can just write your own
[14:32] <eroomde> it's just memory hanging off spi
[14:32] <Matt_soton> Randomskk: i thought the 'resolution' was Fosc/2^14
[14:32] <Matt_soton> but i havnt read the entire datasheet
[14:32] <Blackover> i want the smallest memory footprint
[14:32] <Randomskk> Matt_soton: yea, =fstep
[14:32] <Randomskk> and then modulation is up to 512 fsteps
[14:32] <Randomskk> and frequency tuning is up to 2048 fsteps
[14:33] <Randomskk> it's not.. quite fosc/2^14 either
[14:33] <Randomskk> there are some pre-dividers and stuff
[14:33] <Matt_soton> oh ok
[14:33] <eroomde> Blackover: yes but do you want a file system on your sd card?
[14:33] <Matt_soton> im assuming PFD=Fosc
[14:33] <eroomde> that makes a huge difference
[14:34] <Blackover> eroomde No
[14:34] <eroomde> if you don't then what you're asking for (a way of putting data on an sd card for min mem footprint) barely qualifies as a 'library'. it's just an addressable thing off spi
[14:35] <Matt_soton> surely a 328p has enough space for a file system? u can get it less then 4K
[14:35] <Matt_soton> http://elm-chan.org/fsw/ff/00index_p.html
[14:36] <Blackover> I need find the way to log the data by using microSD and then to read it
[14:36] <eroomde> Blackover: ok, I think a bit more initial reading would be of benefit here.
[14:37] <eroomde> an sd card is just memory that you talk to over a serial link. that's really really easy, and you just have a big blob of binary data. There's then a great big divide in complexity between that and a filesystem, which means you can plug the sd card into your laptop and see it pop up as a drive with files on
[14:37] <eroomde> the former is super easy and takes basically 0 memory, the latter talkes a couple or more k or ram
[14:38] <eroomde> k of ram*
[14:39] <SpeedEvil> If you do hacks, it can be easier.
[14:39] <SpeedEvil> For example - if yuou only support writing to one preallocated contiguous file.
[14:41] <eroomde> sure, but let's work through this decision process logically before swerving off into cul-de-sacs of details and hacks. the point is, which are you after Blackover, or if not sure, would you like us to help you try and figure out a good place to start?
[14:41] <SpeedEvil> Indeed.
[14:42] <SpeedEvil> And 'smallest memory footprint' - when you can get a stm32 with a meg of flash and a couple of hundred K of RAM for $10...
[14:42] <Blackover> my native language is not English, so it's hard for me understand you smooth, sorry/
[14:43] <eroomde> SpeedEvil: he clearly asked about an atmega 328p
[14:44] <eroomde> Blackover: ok, don't worry! what is your native language? you never know, someone here might know it :)
[14:44] <Blackover> Russian
[14:44] <eroomde> or also #electronics and #avr are good places to ask
[14:44] <eroomde> natrium42: !!
[14:44] <eroomde> Blackover: natrium42 is a native russian speaker, although he lives in canada and so may be asleep currently
[14:45] <Blackover> i see
[14:45] <SpeedEvil> eroomde: I should read more backscroll.
[14:45] <Matt_soton> Blackover: do you want smallest ROM (flash) usage or smallest RAM usage?
[14:45] <Blackover> RAM
[14:45] <Zuph> Asleep, at 11 in the morning? Slacker :-p
[14:46] <eroomde> or having a weekend
[14:46] <Blackover> Matt_soton Now i have about 8k of flash free for data logging
[14:47] <Matt_soton> if you wanted a file system, this claims to only use 44bytes of RAM...
[14:47] <Matt_soton> http://elm-chan.org/fsw/ff/pf/appnote.html
[14:47] <Matt_soton> but normally performance is better if you give it ~500 bytes to cache data
[14:48] <Blackover> its one disadvantage is "Single file"
[14:49] <SpeedEvil> There are also serial ->SD modules, if you don't want to deal with it.
[14:49] <eroomde> yes that's a good recommendation ^
[14:49] <eroomde> it removes the problem, at least
[14:51] <Matt_soton> im not too sure exactly what single file means
[14:51] <Zuph> Sparkfun's OpenLog works great if you're *only* writing files from your embedded application. Reading files back is difficult.
[14:51] <Matt_soton> but the 'full featured' version uses 592bytes if u have that free
[14:51] <eroomde> Matt_soton: single file meaning that you can only open and write to one file on the sd card
[14:52] <eroomde> it saves having to have file allocation tables
[14:52] <Matt_soton> oh ok
[14:52] <Matt_soton> i thought it may mean one file open at one time or something
[14:52] <eroomde> just one thing with a pointer to it where you write to
[14:52] <Matt_soton> but that would make more sense
[14:52] <Matt_soton> when my boards arrive from china i can have a play...
[14:53] <Laurenceb_> im currently using Fatfs on stm32
[14:53] <Laurenceb_> well - havent go tit working yet
[14:53] <Laurenceb_> but the code size is crazy small - 7KB with thumb2
[14:53] <eroomde> we used fatfs on lpc2148 and 2136
[14:53] <eroomde> works fine
[14:54] <Matt_soton> ive got it working on a ti part, although it was a load from examples folder job
[14:54] <Laurenceb_> eroomde: did you use proper times?
[14:54] <Laurenceb_> im trying to integrate the rtc with the gps
[14:54] Action: Zuph has been playing around with ChibiOS on STM32.
[14:54] <eroomde> no rtc nope
[14:54] <Laurenceb_> ok
[14:55] <Randomskk> Zuph: ooh, me too
[14:55] <Randomskk> it's fun huh
[14:55] <Laurenceb_> aiui gps -> week number -> seconds since 1980->rtc -> rtc function from fatfs -> year, month day etc timestamp
[14:56] <Laurenceb_> so i only need to provide something to set the rtc
[14:58] <Matt_soton> btw quick question, should u disable interrupts during writing to the SD card, or does it not matter as its sync. communication?
[14:58] <Zuph> Randomskk: Yeah, it is. Currrently wrestling with the HAL stuff, and event trigering.
[14:58] <Laurenceb_> so time overflows in 2116?
[14:58] <Randomskk> Zuph: what on the hal?
[14:59] <Randomskk> mostly the chibios hal seems much nicer than the stm32 periph library
[14:59] <Laurenceb_> whats up with the stm32 perif lib?
[14:59] <Zuph> Right now, I'm just idly playing around. Can't figure out how to get an event to trigger when serial data is received.
[14:59] <Randomskk> Laurenceb_: it's just annoying and wordy and badly documented
[15:00] <Laurenceb_> heh i guess
[15:00] <Laurenceb_> its niceish
[15:00] <Randomskk> it's not that bad
[15:00] <Randomskk> but meh
[15:00] <eroomde> so you guys think ChibiOS is A Nice Thing to hack with?
[15:00] <Randomskk> SpeedEvil: it's fairly easy for me to have RF GND from the chip go to the three ground points of my filter network and then to the sma connector
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[15:00] <Randomskk> eroomde: I made up a basic stm32 skeleton project directory and then like
[15:01] <Randomskk> well it's a fun rtos
[15:01] <Randomskk> it was a lot easier to get working than freertos
[15:01] <Randomskk> now I have like some threads
[15:01] <Randomskk> and one thread sends mails to another thread, which sets some LEDs based on its mails
[15:01] <Randomskk> it's kinda fun
[15:01] <Zuph> eroomde: Yeah, it's a lot of fun, and a hell of a lot easier than freertos (with better documentation as well)
[15:01] <eroomde> cool
[15:01] <Zuph> It also has a less restrictive license than freeRtos, if that matters to you.
[15:01] <eroomde> we used TNKernel on our badger boards
[15:02] <eroomde> but not sure if it's ported to stm32 and wasn't the simplest anyway
[15:02] <Randomskk> https://github.com/adamgreig/STM32_ChibiOSProject is everything you need to get started on an stm32
[15:02] <eroomde> but hey, it's got 5 years of flight heritage now
[15:02] <Randomskk> (or https://github.com/adamgreig/STM32_SkeletonProject for bare metal ;o)
[15:02] <eroomde> Randomskk: good dev board or direct to your own hardware?
[15:02] <Randomskk> I'm on my own hardware, mainly as I have three of my own stm32 dev boards
[15:02] <Laurenceb_> hmm maybe i should put chibios on dactyl
[15:02] <Randomskk> arduino's the only "dev board" I've used
[15:03] <eroomde> anyone know of some good pads which are half graph paper, half lined paper?
[15:03] <Randomskk> well, no, mbed
[15:03] <Laurenceb_> how much ram doe sit use?
[15:03] <Randomskk> Laurenceb_: sec...
[15:03] <Randomskk> http://pastie.org/1985173
[15:04] <Randomskk> at the bottom
[15:04] <Laurenceb_> hah test suite
[15:04] <Laurenceb_> sweet
[15:05] <Laurenceb_> hmm not at all bad
[15:05] <Laurenceb_> does it use system timer?
[15:06] <Randomskk> yes
[15:09] <Laurenceb_> so say i wanted a task to run on some external pin level change
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[15:09] <Laurenceb_> how would that be set up?
[15:10] <Randomskk> I don't actually know, but it can. I guess some kind of task thread and an interrupt handler and stuff
[15:11] <Laurenceb_> yeah
[15:11] <Laurenceb_> isr wakes up task
[15:12] <Laurenceb_> i dont really need rtos for basic flight stuff
[15:12] <Laurenceb_> but if there was an rtos itd be possible ot add other background tasks
[15:12] <Laurenceb_> for other onboard data processing and stuff
[15:15] <Laurenceb_> aha fsa03 is responding correctly XD
[15:15] <Laurenceb_> it needs some delays to respond to certain commands before new ones are sent
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[16:14] <Laurenceb_> hmf no its not working :(
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[17:37] <Laurenceb_> Randomskk: ping
[17:57] <Laurenceb_> cc1: error: unrecognized command line option "-fpromote-loop-indices"
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[18:32] <jonsowman> cuddykid: left you a msg via zeusbot
[18:32] <jonsowman> the xml is done
[18:32] <jonsowman> tested & working with your example string
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[18:37] <cuddykid> jonsowman, thanks! :) much appreciated
[18:39] <Randomskk> Laurenceb_: back, I have no idea about that though, just take it out the makefile or something
[18:39] <Laurenceb_> got it thanks
[18:40] <Laurenceb_> fsa03 isnt ideal
[18:40] <Laurenceb_> i only get 3 sats inside
[18:40] <Laurenceb_> wont get a 3d lock :S
[18:41] <Randomskk> :/
[18:46] <Laurenceb_> ok it got a lock
[18:46] <Laurenceb_> but takes rather a while
[18:47] <Laurenceb_> not as good as my ublox5 receiver with lna on the front
[18:47] <Laurenceb_> i suspect that what it requires
[18:47] <Laurenceb_> also it doenst like my laptop power supply
[18:47] <Laurenceb_> gets faster lock with laptop on battery
[18:51] <Laurenceb_> also pascal stangs printf is broken
[18:52] <Laurenceb_> not very impressive :( took 2 minutes to get a lock on my windowsill
[18:53] <Laurenceb_> seems it was picking things up that werent sats - poss my laptop as it was plugged into the usb
[18:53] <Laurenceb_> seems it really needs an lna
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[19:01] <cuddykid> fsphil: see you've updated launch page, fingers crossed haha
[19:02] <cuddykid> Also, was the SSDV hard to implement?
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[19:02] <Randomskk> fsa03 lacks an lna?
[19:06] <fsphil> cuddykid, not too bad. learned a lot about jpeg doing it :)
[19:06] <cuddykid> sounds a good project, maybe next flight :)
[19:07] <Laurenceb_> Randomskk: yes
[19:07] <Randomskk> huh.
[19:07] <Randomskk> oh well
[19:08] <cuddykid> would the radiometrix NTR2 be sensitive enough for uplink comms?
[19:08] <cuddykid> Thinking of ordering one to play around with
[19:08] <Randomskk> it has been done
[19:09] <cuddykid> good good, might order one :)
[19:11] <Laurenceb_> im going to try and live with the fsa03, but its not ideal
[19:11] <Laurenceb_> i still cant set it up properly
[19:11] <Laurenceb_> doesnt want to change the baudrate
[19:11] <Randomskk> seems kinda disappointing for such a talked about module
[19:12] <Laurenceb_> i havent tried it outdoors with good sky view yet
[19:12] <Laurenceb_> ill try and get rptinf to work, then try and get baud rate to work
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[19:14] <Laurenceb_> how do i compile c with debugging
[19:14] <Randomskk> -g
[19:14] <Randomskk> and no -O
[19:14] <BrainDamage> are you using gcc?
[19:14] <Laurenceb_> thanks
[19:14] <Randomskk> Laurenceb_: I think my makefile had a flag for debug vs not
[19:15] <Laurenceb_> im compiling on my laptop to test
[19:16] <Laurenceb_> (.text+0x1e4): multiple definition of `rprintfu08'
[19:16] <Laurenceb_> /tmp/cchGBvfY.o:rpintf.c:(.text+0x130): first defined here
[19:16] <Laurenceb_> the hell
[19:18] <Randomskk> you're likely including something twice
[19:18] <Randomskk> make sure you've got include guards or #pragma once in your header files and that you're not linking in an object file twice or anything
[19:18] <Laurenceb_> gcc rpintf.c -g print
[19:18] <Randomskk> are you missing a -o?
[19:19] Action: Laurenceb_ fails
[19:19] <Laurenceb_> then how do i run it?
[19:19] <Laurenceb_> gdb... something
[19:19] <Randomskk> gdb print]
[19:19] <Randomskk> uh, without the ]
[19:19] <Randomskk> and then I hope you like gdb
[19:20] <Laurenceb_> i see
[19:20] <Laurenceb_> well its giving segfault
[19:20] <Laurenceb_> hoped to find out why
[19:20] <Randomskk> I'm not the best person to ask about gdb
[19:20] <Randomskk> I can just about struggle through it sometimes
[19:21] <Laurenceb_> apparently putchar gives segfault
[19:21] <Laurenceb_> odd
[19:22] <BrainDamage> type bt
[19:22] <BrainDamage> after it crashed in gdb
[19:22] <BrainDamage> you can use gui interfaces
[19:22] <BrainDamage> nemiver or ggg
[19:22] <Laurenceb_> 0x0804844a in rprintfChar (c=104 'h') at rpintf.c:62
[19:23] <BrainDamage> check the whole stacktrace
[19:23] <BrainDamage> it's very probable you're passing corrupted data so the actual idiocy is lower on the stack
[19:23] <Laurenceb_> oh
[19:24] <Laurenceb_> i made a reentrant function
[19:24] <Laurenceb_> putchar is part of rprintf
[19:24] <Laurenceb_> which calls putchar
[19:24] <Randomskk> that's not exactly what reentrant means
[19:25] <Randomskk> nevertheless that's probably the problem :P
[19:26] <Laurenceb_> erm yeah... its not the same
[19:47] <Laurenceb_> wow this is a mess
[19:47] <Laurenceb_> think its mostly fixable
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[19:52] <Laurenceb_> Randomskk: yeah fsa03 appears ot be sarantel geohelix - saw filter - impedance match netwrok - GBX5100
[19:53] <Randomskk> I see
[19:53] <Laurenceb_> so the ant gain isnt ideal, then you lose a lot in the saw
[19:53] <Laurenceb_> i suspect the noise is coming over the power lines
[19:53] <Randomskk> not a problem while flying then eh? :P
[19:53] <Laurenceb_> so the receiver turns the gain right up, but picks up power supply noise
[19:54] <Laurenceb_> ive seen this with other ublox modules, but not as bad
[19:54] <Laurenceb_> i think just a ferrite on the usb cable may help a lot
[19:54] <Laurenceb_> been playing with powering the pc off battery/winding the cable around, and it seems to help a lot
[19:55] <Laurenceb_> most of the noise is off my machine id guess
[19:55] <Randomskk> get that wireless working quickly :P
[19:55] <Laurenceb_> it can hold a lock downstairs in my house, if it eventually gets one... which isnt that bad
[19:56] <Laurenceb_> but my other ublox5 once got a lock through the lift shaft of a 4 story building
[19:56] <Laurenceb_> you could see the sats were lined up with the shaft in ucenter
[19:57] <Randomskk> lol nice
[19:57] <Laurenceb_> i might email ublox and see if they can offer advice, its still being odd - i can change everything apart from the baud rate, and i never get an ack from the receiver
[19:58] <Laurenceb_> i see jcoxons code has lots of delays :S maybe he can help when hes next around
[19:59] <Laurenceb_> bbl
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[20:38] <Lunar_Lander> hello
[20:40] <Lunar_Lander> is fsphil here?
[20:42] <Laurenceb_> ok just logged some aquisitions - fsa03 seems to be picking up then dropping sats that shouldnt be visible
[20:42] <Laurenceb_> classic sign of noise
[20:42] <Laurenceb_> rfi/emi
[20:43] <fsphil> floating about :)
[20:43] <fsphil> actually I'm on my laptop
[20:43] <Lunar_Lander> ah
[20:43] <Lunar_Lander> :)
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[20:45] <fsphil-laptop> that's better
[20:47] <Lunar_Lander> yea
[21:08] <Laurenceb_> ok more weirdness - fsa03 seems to have autobauding - datasheet specifically says it doesnt
[21:09] <Laurenceb_> this may explain _some_ of my issues - the onboard autobauding was screwed up
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[22:38] <Laurenceb_> success - fsa03 and all i2c sensors talking
[22:38] <Lunar_Lander> yay!
[22:38] <Lunar_Lander> well done Laurenceb_ !
[22:38] <Laurenceb_> turns out my fsa03 at least has autobauding enabled - if switches to whatever baud rate you talk to it with
[22:38] <Laurenceb_> thanx :P
[22:39] <SpeedEvil> Hmm.
[22:39] <Laurenceb_> ubloxs generic ublox5 datasheet says only ublox6 supports autobaud :S
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[22:39] <SpeedEvil> Does it talk and get a position?
[22:40] <Laurenceb_> position is a bit iffy in my living room
[22:40] <Laurenceb_> takes 3 minutes to get lock and tends to wanter about by 50m
[22:40] <Laurenceb_> will try outside tomorrow
[22:40] <SpeedEvil> :)
[22:40] <SpeedEvil> Great!
[22:40] <SpeedEvil> (well - not great that it wanders - but progress!)
[22:40] <Laurenceb_> its not giving 5hz output tho
[22:41] <SpeedEvil> I suppose next to see is the radio?
[22:41] <Laurenceb_> i had that working earlier with nmea.. may be a typo in the config
[22:41] <Laurenceb_> yeah - a bit hard to me to test
[22:41] <SpeedEvil> Ah - you've not made the other side yet.
[22:41] <Laurenceb_> the current draw and pin voltages sugest the basics are working
[22:41] <Laurenceb_> yes, i was considering hacking something up with a module
[22:42] <Laurenceb_> i could populate another board, but the rf is about the hardest part to do
[22:43] Action: Laurenceb_ just discovered the file tree sidebar for gedit
[22:44] <Laurenceb_> very handy
[22:45] <Laurenceb_> so... i tried to set the fsa03 to 10hz.. it acks the command but stays at 1hz
[22:45] <Laurenceb_> openpilot say its possible with some modules
[22:48] <Laurenceb_> interestingly you can integrate magno, gyro and velocity info into the ekf on the ublox
[22:48] <Laurenceb_> but its only 2D - for cars
[22:49] <SpeedEvil> Neat.
[22:49] <Lunar_Lander> here
[22:49] <Lunar_Lander> do you know the Delta Clipper?
[22:49] <SpeedEvil> Some I've seen will also take wheel sensor inputs
[22:49] <Lunar_Lander> http://www.hq.nasa.gov/office/pao/History/x-33/dc-xa.htm
[22:49] <Lunar_Lander> it says "Like any good experimental vehicle, the DC-XA flew until it was destroyed. "
[22:49] Action: SpeedEvil is aware of it.
[22:49] <Lunar_Lander> is it really true that all good experimental vehicles crash?
[22:49] <SpeedEvil> No.
[22:50] <Lunar_Lander> good
[22:50] <SpeedEvil> It's deeply depressing that that wasn't carried on with.
[22:50] <Lunar_Lander> yea
[22:50] <SpeedEvil> It was much more promising than venturestar.
[22:50] <SpeedEvil> Which was 'how much untried tech can we pack into one craft'
[22:50] <Lunar_Lander> yeah
[22:50] <Lunar_Lander> like that new bar-shaped engine and stuff
[22:51] <SpeedEvil> Aerospike, conformal tanks, metallic TPS
[22:52] <Lunar_Lander> yeah
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[23:18] <Lunar_Lander> good night
[23:19] <Laurenceb_> hmf
[23:19] <Laurenceb_> turns out i handt fixed it
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[23:19] <Laurenceb_> its the way make includes header files - it hadnt updated
[23:19] <Laurenceb_> however, everything else now works - 5hz ubx output, just 9600 baud
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[23:29] <SpeedEvil> :)
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[23:33] <Laurenceb_> how do i setserial?
[23:33] <Laurenceb_> to set a baud rate?
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[23:34] Nick change: cuddykid_ -> cuddykid
[23:36] <Laurenceb_> oh nvm
[23:36] <Laurenceb_> stupid -abqvVWz
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[23:57] <Laurenceb_> wow 10 sats in living room
[00:00] --- Sun May 29 2011