highaltitude.log.20080621

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[09:56] <jcoxon> morning edmoore
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[13:10] <edmoore> hi jcoxon
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[14:03] <Laurenceb> hi folks
[14:07] <Laurenceb> hmm I seem to have dependancies tangled up...
[14:08] <Laurenceb> so, I have "TSIP.c" linked to "main.h" and everything works
[14:08] <Laurenceb> if I take part of the header from TSIP.c and move it to TSIP.h
[14:08] <Laurenceb> then link main.h to TSIP.h , no luck
[14:09] <Laurenceb> any ideas?
[14:12] <Laurenceb> ok... it compiles fine unless I #include TSIP.h from main
[14:13] <Laurenceb> then I have hundereds of errors in TSIP.c
[14:13] <Laurenceb> why?
[14:13] <Laurenceb> can anyone here enlighten me?
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[15:26] <Hiena> Laurenceb, seems like some linking problem.
[15:27] <Hiena> Is the TSIP.h included to the TSIP.c?
[15:28] <Hiena> Ans is the TSIP.h included to the main.h?
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[17:10] <Laurenceb> hi edmoore
[17:11] <edmoore> hi
[17:11] <Laurenceb> I solved that tsip question, you have to send -1 to leave floating point values unchanged
[17:11] <Laurenceb> http://gpsd.berlios.de/vendor-docs/trimble/tsip-reference.pdf
[17:24] <Laurenceb> bbl
[17:32] <jcoxon> hey edmoore
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[19:55] <jcoxon> evening Rocketboy1
[19:56] <Rocketboy1> hiya jcoxon
[20:00] <Rocketboy1> actually I checked - the permit runs out on the 26th October - so a while yet
[20:01] <jcoxon> good good
[20:01] <jcoxon> so lots of summer launching then :-)
[20:01] <jcoxon> I'm in suffolk after my exams so will be available whenever
[20:05] <Rocketboy1> OK - good - I should put somthing together
[20:06] <Rocketboy1> but I'm back at work at the mo - so only weekends free
[20:06] <jcoxon> well teh permit is only weekends isn't it
[20:06] <Rocketboy1> yeah
[20:06] <jcoxon> well i'd be keen to test out my goliath board one launch and also do mine and doug's HAPS payload
[20:07] <jcoxon> also we could look into a badger Atlas attempt
[20:07] <Rocketboy1> yeah that would be good - hows badger going?
[20:08] <jcoxon> not sure, edmoore?
[20:08] <edmoore> yo
[20:09] <edmoore> latest update - usb end points recognised, so something in this vast library is working. yet to send data.
[20:09] <edmoore> try not to fall asleep
[20:09] <edmoore> from a actual ability to do a mission, we should be good for that pretty soon
[20:10] <edmoore> Though... I reckon it can get a lot lighter. Haven't actually weighed it yet though
[20:10] <Rocketboy1> sound good
[20:10] <jcoxon> oh i've ordered the bits for my wireless cutdown
[20:11] <edmoore> I'm quite keen on a hardware revision too... but that'll have to wait, I guess. We can get uBlox 5s for $38 ea in quantities of 10
[20:12] <edmoore> which is quite insane given they're probably the best commercial gps we can get our hands on atm
[20:12] <edmoore> Just don't need 10, that's all. Unless some others here fancy getting a couple.
[20:12] <Rocketboy1> and they are good for >60Kft
[20:12] <edmoore> yep
[20:12] <edmoore> so I understand, though I would want to test that quite thoroughly first
[20:13] <Rocketboy1> ye should get some - I could order some up and put them on the website
[20:13] <Rocketboy1> (random solutions)
[20:13] <edmoore> that would rock - we could probably get 3 or 4
[20:13] <edmoore> and maybe use them instead of the lassen. They'd be a lot better for parafoil work, I'd imagine
[20:13] <Rocketboy1> I'll take a look
[20:14] <edmoore> the autopilot guys on the paparazzi project and elsewhere say they've made all the difference over the u-blox 4s
[20:15] <edmoore> virtually no lag, leading them to suspect they've incorporated signal phase in, or something
[20:18] <edmoore> Are there any lessons learned on dual-ballooning from last time that we should consider for an atlas attempt?
[20:18] <jcoxon> yeah, the ring system is bad
[20:19] <jcoxon> it allows for too much oscilation
[20:20] <jcoxon> also we really need a perfect day or we run the risk of damaging a balloon
[20:21] <Rocketboy1> I was rather put off the whole thing
[20:21] <edmoore> lol
[20:22] <Rocketboy1> I just think the whole balloon dragging behind is problematic
[20:23] <edmoore> yes it is
[20:23] <edmoore> maybe 2 equally inflated balloons could be the answer
[20:23] <Rocketboy1> an interesting experiment - but I think there are quite a few issues to solve if its to be sucessful
[20:24] <jcoxon> perhaps we should go for a single balloon and see what max we can get
[20:24] <jcoxon> and then if necessary add more...
[20:24] <Rocketboy1> yeah possibly - but I think they need equal ascent rate
[20:25] <Rocketboy1> yeah a single partly filled balloon would be better as a next step
[20:26] <edmoore> yeah
[20:26] <edmoore> on a clear day
[20:26] <jcoxon> perhaps have a second receiver along the predicted flight path
[20:27] <jcoxon> would be cool :-)
[20:27] <jcoxon> so single balloon + lightest possible payload
[20:30] <Rocketboy1> yeah
[20:30] <Rocketboy1> (but including camera)
[20:30] <jcoxon> yup
[20:30] <jcoxon> perhaps focus soley on Atlas for that launch day
[20:31] <jcoxon> no other launches or payloads
[20:32] <Rocketboy1> sure
[20:34] <jcoxon> edmoore, what needs to be done by use for a badger Atlas?
[20:34] <jcoxon> use -> us
[20:34] <edmoore> radio
[20:35] <edmoore> and some flight code, but that's nothing big
[20:35] <edmoore> oh and have still to actually send a text with the telit.... but that's for lack of sim
[20:35] <edmoore> so can't guarantee that works
[20:36] <jcoxon> haha
[20:36] <jcoxon> i just swap in my contract sim to test
[20:57] <Laurenceb> hi folks
[21:03] <Laurenceb> wow ublox5 is insane
[21:04] <edmoore> yeah, tis nice
[21:04] <Laurenceb> oh well I'll have to stick with lassen iq now
[21:05] <edmoore> I mean you gotta do the integration onto your pcb, but that's not all annoying
[21:05] <Laurenceb> my parafoils going to have veroboard
[21:05] <edmoore> the zagi flight comp?
[21:05] <Laurenceb> nah
[21:06] <Laurenceb> I'll go with something dead simple
[21:08] <edmoore> I quite want to reduce to dead simple
[21:08] <edmoore> making badger lighter would mean increasing the complexity, annoyingly
[21:10] <Laurenceb> my parafoil code is almost down to 8k
[21:10] <Laurenceb> but that would be silly
[21:11] <Laurenceb> I need to actually make some hardware to run it now... pity my soldering iron is broken :-/
[21:11] <Laurenceb> brb
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[21:46] <Laurenceb> how can I printf a load of hex as binary data?
[21:47] <Laurenceb> printf("\0x76");
[21:47] <Laurenceb> and so on?
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[00:00] --- Sun Jun 22 2008