highaltitude.log.20081127

[00:00] <wickerwaka> is that a stray } two lines into the for loop?
[00:00] <natrium42> yep
[00:01] <wickerwaka> how many slots are there?
[00:01] <natrium42> STEP should be defined as 12, btw
[00:01] Action: natrium42 sux
[00:01] <natrium42> dunno, i just put address space
[00:02] <wickerwaka> MAGIC indicates what? used?
[00:03] <natrium42> yes
[00:05] <wickerwaka> a bitfield or a simple count would be a lot easier
[00:05] <wickerwaka> but it would mean more writes
[00:05] <Laurenceb> hello
[00:05] <Laurenceb> :P
[00:06] <Laurenceb> phew
[00:06] <Laurenceb> after some very tricky soldering
[00:06] <Laurenceb> I'm back to where I was 3 hours ago
[00:06] <Laurenceb> luckly eeprom appears to be unfried
[00:06] <natrium42> wickerwaka, indeed
[00:07] <Laurenceb> MAGIC_NUMBER=used
[00:07] <Laurenceb> yes
[00:07] <natrium42> too bad you can't do if(power_lost) { save_stuff_to_eeprom(); }
[00:07] <Laurenceb> #define MAGIC_NUMBER 0xFF in the header
[00:07] <Laurenceb> hehe
[00:10] <Laurenceb> http://www.spacex.com/assets/img/010AK_Elon_liftoff_DSC_9717_SM.jpg
[00:11] <Laurenceb> i think they're praying
[00:20] <wickerwaka> is it possible to buy oled light panels
[00:20] <wickerwaka> no addressable pixels, just a flat light emitter
[00:26] <Laurenceb> hmm youtube have gone widescreen
[00:27] Action: Laurenceb enjoys http://uk.youtube.com/watch?v=1P3Wc-37pC4
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[02:33] <Laurenceb> wow I think I actually got it all working
[02:35] <Laurenceb> http://wiki.ukhas.org.uk/code:i2c_eeprom
[02:43] <Laurenceb> ~ 100 bytes samller as well
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[16:11] <Laurenceb> hello
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[16:57] <Laurenceb> hi natrium42
[16:57] <natrium42> hola
[17:03] <Laurenceb> my mini rogallo firmware is currently 1 byte away from filling flash :P
[17:03] <Laurenceb> I seem to have fixed the eeprom
[17:06] <natrium42> haha
[17:06] <natrium42> neato
[17:06] <Laurenceb> I'm trying to work out a way to test it
[17:06] <natrium42> emulator?
[17:07] <Laurenceb> I was trying in my kitchen but that was a bad idea
[17:07] <natrium42> oh
[17:07] <natrium42> have you thought about writing a sim?
[17:07] <Laurenceb> yeah, I've compiled different components on my ubuntu machine
[17:07] <Laurenceb> and run them with octave models
[17:07] <Laurenceb> but I need to actually test the glide performance of the wing with feedback
[17:08] <Laurenceb> with can only really be done in real life
[17:08] <Laurenceb> guess its the find a steep hill approach
[17:08] <natrium42> use the big ben :)
[17:09] <Laurenceb> I was testing it in my kitchen but managed to fly it into the cooker
[17:09] <Laurenceb> that wasnt good
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[18:37] <Laurenceb> hi edmoore
[18:38] <edmoore> yo
[18:38] <Laurenceb> I think the mini rogallo is finallyready
[18:39] <Laurenceb> I've just beent testing the eeprom, it seems to work at last
[18:39] <Laurenceb> 21/2 hours of logging now :P
[18:39] <Laurenceb> *2.5
[18:39] <Laurenceb> you add up to a megabyte of memory
[18:44] <Laurenceb> edmoore: I took a look at quaternoins vs euler angles for IMU filtering, using benchmarks for AVR quaternions uses about 60% more clock cycles, I think without a FPU ARM will be fairly similar but I cant find good benchmarks
[18:44] <edmoore> good data point
[18:44] <edmoore> do you find now you have more time doing a phd?
[18:44] <Laurenceb> hehe
[18:45] Action: Laurenceb contemplates doing some work
[18:48] <Laurenceb> when you move up to 6 or 9 state quaternions may by slightly better as euler angles would involve a lot more trig
[18:52] <Laurenceb> neat - http://www.flickr.com/photos/32572109@N02/sets/72157609436979020/
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[19:02] <edmoore> yeah they are neat, those displays
[19:02] <edmoore> always wanted to find a use for one in something 'serious'
[19:02] <edmoore> could maybe be some visual output for a software radio
[19:03] <edmoore> to show what kind of constellation it is receiving
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[19:04] <Laurenceb> edmoore: you have a sparkfun 5dof imu?
[19:06] <edmoore> yes
[19:06] <edmoore> gtg, sorry
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[19:06] <Laurenceb> cya
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[22:32] <fuzzylugnuts> Hey!
[22:33] <fuzzylugnuts> ÿa german electronics magazine "Electronik Industrie" wants to do an article on my ballooning stuff
[22:34] <fuzzylugnuts> through radiometrix of course
[22:34] <fuzzylugnuts> because their UHX-1's made it all possible.
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[22:43] <Laurenceb> cool
[22:44] <fuzzylugnuts> Yeah
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[22:48] <Laurenceb> I've pretty much finished the mini rogallo
[22:48] <fuzzylugnuts> cool
[22:48] <fuzzylugnuts> how's it working?
[22:48] <Laurenceb> all the codes up on the wiki now
[22:48] <Laurenceb> http://wiki.ukhas.org.uk/_media/projects:tsip_version.zip
[22:49] <fuzzylugnuts> groovy
[22:50] <Laurenceb> I'll probably launch it over christmas now
[22:50] <fuzzylugnuts> awesome
[22:50] <fuzzylugnuts> thats a neat little lightweight thing
[22:50] <fuzzylugnuts> now if it would only follow GPS coordinates you could have it deliver little things
[22:50] <Laurenceb> that thing on the wiki isnt what I'm launching
[22:51] <fuzzylugnuts> what are you launching, then? I think I've only seen that.
[22:51] <Laurenceb> its a 50cm wingspan rogallo
[22:53] <Laurenceb> 1/2 size version of http://wiki.ukhas.org.uk/_media/projects:ukhas_glider_project:pict7921.jpg
[22:53] <fuzzylugnuts> oh wow
[22:53] <fuzzylugnuts> very cool
[22:53] <Laurenceb> thats from last year
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[22:55] <fuzzylugnuts> whats the range of something like that?
[22:55] <Laurenceb> ~ 100km
[22:55] <fuzzylugnuts> whoa
[22:56] <Laurenceb> from 25km launch
[22:56] <fuzzylugnuts> whats the range of your remote control of it?
[22:56] <Laurenceb> 100m on that
[22:56] <fuzzylugnuts> hrmm..
[22:56] <Laurenceb> the new one is about 4Km
[22:56] <fuzzylugnuts> PWM?
[22:56] <Laurenceb> to the servo yes
[22:57] <fuzzylugnuts> I mean the RC part
[22:57] <Laurenceb> yes
[22:57] <fuzzylugnuts> ok
[22:57] <Laurenceb> but thats just so it can be landed easily
[22:57] <fuzzylugnuts> ok
[22:57] <fuzzylugnuts> it is autonomous?
[22:58] <Laurenceb> yeah
[22:58] <Laurenceb> thats the point :P
[22:58] <fuzzylugnuts> cool beans
[22:59] <Laurenceb> the ground control feature was added later
[23:00] <fuzzylugnuts> ah ok
[23:00] <fuzzylugnuts> thats neat
[23:00] <fuzzylugnuts> so are you going to follow it in a car or something?
[23:00] <Laurenceb> its only active below 200m altitude
[23:01] <Laurenceb> it will hopefully fly back to us
[23:02] <fuzzylugnuts> ah ok
[23:02] <fuzzylugnuts> are you doing it from a hill with a large field of view?
[23:02] <Laurenceb> we'll launch from ears
[23:02] <fuzzylugnuts> ears?
[23:03] <Laurenceb> usual launch site
[23:03] <fuzzylugnuts> umm ok
[23:04] <Laurenceb> http://www.ears.org.uk/launches/site/index.shtml
[23:06] <Laurenceb> we usually launch just where that car is parked
[23:07] <fuzzylugnuts> cool
[23:44] <fuzzylugnuts> thats one of the major problems here
[23:44] <fuzzylugnuts> its very populated and the woods are dense
[23:44] <fuzzylugnuts> out in idaho there were millllllllllllllllles and milllllles of open desert to launch in
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[23:51] <fuzzylugnuts> mr. I-explode-in-water
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[23:57] <fuzzylugnuts> mmm
[23:57] <fuzzylugnuts> pom
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[00:00] --- Fri Nov 28 2008