highaltitude.log.20061217

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[11:46] <jcoxon> just to say guys that there is a utarc launch in the USA today
[11:47] <jcoxon> info here:http://www.utarc.org/wiki/index.php/Icarus_1/2
[11:47] <jcoxon> and live status here: http://www.utarc.org/wiki/index.php/UX-9_Status
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[17:35] <mc-> hi all
[17:35] <icez> hi
[17:35] <jcoxon> hey mc-
[17:35] <mc-> just googled on rockoon, and the wiki is in the top 20.
[17:36] <mc-> the ukhas wiki that is
[17:36] <jcoxon> not bad at all :)
[17:37] <icez> oh yeah, jcoxon we still have to add UK restrictions-related links on the site:]
[17:37] <jcoxon> good point
[17:37] <jcoxon> is it necessary to have them on hte ukhas site itself?
[17:37] <jcoxon> or would a link to the wiki be sufficient
[17:37] <mc-> a few more links could move it up the google ranking
[17:37] <icez> bah, as long as they are visible :]
[17:37] <icez> the wiki is good because people can add to it..
[17:38] <icez> but I don't know anything about UK restrictions:P
[17:38] <jcoxon> i'll start putting together a page
[17:39] <mc-> also can we link to other balloon groups, then we can move up google slots
[17:39] <mc-> and get more members...etc
[17:39] <icez> lol
[17:39] <jcoxon> tis a good idea
[17:39] <icez> are there any others?!:p
[17:39] <jcoxon> actually i emailed the UTARC team today
[17:39] <jcoxon> see if they wanted to be "friends"
[17:42] <jcoxon> though as they lauched today i doubt i'll get a reply for a bit
[17:44] <jcoxon> seem to still be tracking their balloon
[17:46] <mc-> http://home.hiwaay.net/~bbrown/hiball8.htm - they did a zero pressure balloon test
[17:48] <jcoxon> thats really interesting
[17:49] <jcoxon> "trans-Atlantic zero-pressure balloon"
[17:50] <mc-> yes, how about a trans-North Sea balloon?
[17:50] <jcoxon> from where to where?
[17:51] <mc-> Camb to ?
[17:51] <jcoxon> (oh i'm logged into the ukhas website so can do updates - do you guys know of any links we are missing?)
[17:51] <jcoxon> could probably make europe
[17:51] <jcoxon> but would have to warn their air traffic control
[17:51] <jcoxon> if there was another balloon group we could coordinate with them - they could sort that side out
[17:52] <icez> uhm
[17:53] <mc-> here's a long list of balloon projects: http://www.amsat.org/amsat/balloons/balloon.htm
[18:04] <mc-> Is there any other legalities for launching balloons, apart from air traffic control (NOTAMs)?
[18:04] <jcoxon> radio freqs
[18:04] <jcoxon> apart from that nope
[18:05] <jcoxon> nothing
[18:05] <jcoxon> the application for permission requires a few things
[18:05] <mc-> so I'm allowed to send a radio signal to release a rocket, (the rocket won't light).
[18:05] <jcoxon> yeah
[18:05] <jcoxon> rockoons are out of my field
[18:06] <jcoxon> rocketboy would know more - i think right now rockoons are legal purely as they were inconcivable when the laws were written
[18:06] <jcoxon> so there aren't any laws against them
[18:06] <mc-> great!
[18:07] <jcoxon> best to ask rocketboy - the nova team are working on a rockoon right now so they must think its legal
[18:07] <mc-> I had better launch a simple balloon first...
[18:08] <jcoxon> well i was about to say
[18:08] <jcoxon> just working on the payload case for peg IV
[18:08] <jcoxon> have got quite a lot of space
[18:08] <jcoxon> if anyone wants to fly something
[18:09] <mc-> my payload is very light...it's a GPS+PIC+transmitter+PP3 battery
[18:09] <mc-> can you carry that?
[18:09] <jcoxon> yup
[18:09] <jcoxon> would you want it in a train? or in the payload case?
[18:10] <mc-> don't mind..I guess in a train...so I test it more thoroughly..
[18:10] <jcoxon> no problem
[18:10] <jcoxon> rocketboy wants to launch on 7th Jan
[18:10] <jcoxon> sd
[18:11] <jcoxon> in
[18:11] <mc-> I haven't finished a cutdown, do you have that on yours?
[18:11] <jcoxon> 20 days!
[18:11] <jcoxon> still thinking about a cutdown
[18:11] <jcoxon> i have a charging circuit which could blow a explosive cutdown (like on hte wiki)
[18:11] <mc-> I've got the FET, and written the code, but haven't tested it properly.
[18:12] <jcoxon> right
[18:12] <jcoxon> i'm not a fan of cutdowns - don't like working on them
[18:12] <mc-> why?
[18:12] <jcoxon> don't like the unreliablity
[18:12] <jcoxon> for some reason
[18:13] <jcoxon> always leave it to the last minute to build one
[18:13] <jcoxon> stupid me
[18:13] <mc-> I know what you mean
[18:13] <jcoxon> i think a lot is i don't trust my electronics
[18:14] <mc-> do you have any black powder+ignitors?
[18:14] <jcoxon> no
[18:14] <jcoxon> hopefully get them off rocketboy
[18:15] <mc-> I was thinking about making them simpler, by using a plastic straw.
[18:15] <mc-> then it might not need any black powder, just an ignitor
[18:16] <jcoxon> reduce the chance of not a clean break
[18:16] <jcoxon> how about handling them? - they are pretty solid in the plastic tube
[18:17] <mc-> I thought a straw would be strong enough..but much weaker than a plastic tube.
[18:17] <jcoxon> could do
[18:18] <mc-> I've also seen methods of cutting nylon cord using nicrome wire
[18:18] <jcoxon> yeah
[18:18] <jcoxon> thats the way the usa do it
[18:18] <jcoxon> though i've seen commercial versions of the explosive method
[18:18] <jcoxon> when i was out in africa
[18:19] <mc-> cutting cord uses lots of current though
[18:19] <mc-> good to talk to you, must go now..
[18:19] <mc-> hope the links were useful
[18:19] <mc-> bbl
[18:19] <jcoxon> cya
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[21:38] <LaurenceB> bit quite tonight :-)
[21:40] <kc0wys> yea
[21:40] <kc0wys> finals begin tomorrow 4 me... :(
[21:41] <kc0wys> final exams, that is
[21:41] <LaurenceB> I've been working on the autopilot board for my glider project
[21:41] <LaurenceB> you should be revising lol
[21:45] <LaurenceB> I've now got the autopilot to compensate for wind and work out the direction to target given the target coordinates
[21:45] <LaurenceB> all uses 32 bit floating point
[21:45] <kc0wys> ooh cool :)
[21:46] <LaurenceB> should be ready to do some tests if the weather is good
[21:46] <kc0wys> yea i am studying, sort of...
[21:46] <kc0wys> link?
[21:46] <LaurenceB> Sorry haven't put anything up yet
[21:46] <kc0wys> ok
[21:46] <kc0wys> which project is this?
[21:47] <kc0wys> sry i haven't been following things very closely around here lately...
[21:47] <LaurenceB> I've got a broken rc plane I've fitted a servo on
[21:47] <LaurenceB> thats just for tests
[21:47] <LaurenceB> I'm going to launch a glider off a balloon
[21:47] <LaurenceB> when it works
[21:48] <kc0wys> ah ok
[21:48] <kc0wys> you're in england?
[21:48] <LaurenceB> I'm aiming for something simple
[21:48] <LaurenceB> just rudder control
[21:48] <LaurenceB> so it'll record wing on the way up
[21:48] <LaurenceB> -wind
[21:49] <kc0wys> so the goal is to have it return to a specific spot, or just keep the glider stable?
[21:49] <LaurenceB> and then assume it's the same on the way down
[21:49] <LaurenceB> the glider should be stable by itself
[21:50] <LaurenceB> I hope
[21:50] <kc0wys> o ok lol
[21:50] <LaurenceB> the rudder will be used to fly it back to the target
[21:51] <LaurenceB> I'll start working on the interface tomorrow
[21:51] <kc0wys> alright, yea i'd love to see pictures sometime
[21:51] <kc0wys> this is a gumstix project as well?
[21:51] <LaurenceB> yes I've got some I'll upload them
[21:51] <LaurenceB> this uses micros with bascom avr
[21:52] <LaurenceB> www.mcselec.com
[21:52] <LaurenceB> I think thats the site
[21:52] <LaurenceB> it's a compiler for avr micros
[21:53] <LaurenceB> gliders are probably a good use of gumstix tho
[21:54] <LaurenceB> I'm really using the micro to the limit with this
[21:54] <kc0wys> but it's smaller and cheaper than a gumstix, right?
[21:54] <kc0wys> i'd assume so...
[21:55] <kc0wys> programming might be somewhat of a pain tho, i'd imagine...
[21:55] <LaurenceB> yes and more important, uses hardly any power
[21:55] <LaurenceB> using bascom compiler, it's quite easy
[21:56] <LaurenceB> I've basically created my own os tho lol
[21:56] <LaurenceB> processor time is divided into 16us intervals
[21:56] <LaurenceB> and different tasks allocated different slots
[21:57] <LaurenceB> this means loads of overheads
[21:58] <LaurenceB> and it means its like the processor is at about 3MHz not 16MHz
[21:58] <LaurenceB> but its still fast enough to do all the vector algebra
[22:03] <kc0wys> nice :)
[22:03] <kc0wys> that's pretty... involved
[22:03] <LaurenceB> yes I've been working on the code for 2 weeks now
[22:05] <LaurenceB> there are lots of internal registers yu can use to syncronise things
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[22:11] <mc-> hi LaurenceB
[22:11] <mc-> your glider code sounds impressive
[22:11] <kc0wys> hey
[22:12] <LaurenceB> well I'm not sure how reliable it is :P
[22:13] <mc-> some qns, how do you measure the direction of glide? just GPS?
[22:13] <LaurenceB> yes
[22:13] <LaurenceB> it's 1Hz, so the glider has to turn slowly
[22:13] <mc-> I was thinking you could put the glider into a 360 turn, and then measure the wind drift
[22:14] <LaurenceB> yes, but from any 3 positions, you can find the wind vector
[22:14] <LaurenceB> 3positions-> 3 gps velocity vectors
[22:15] <mc-> I see, but you don't actually know the direction of the glider
[22:16] <LaurenceB> yes: the three vectors will vectors will be on the circumference of a circle
[22:16] <LaurenceB> the center will be the wind vector
[22:16] <LaurenceB> the radius the speed
[22:17] <mc-> ok, understood. Another method might be to point the glider in any random direction,
[22:17] <mc-> and then issue corrections, until it's heading towards target
[22:17] <LaurenceB> and the last point on the circumference the present velocity
[22:18] <LaurenceB> problem with issuing corrections is that the behavour will b highly nonlinear
[22:19] <mc-> ok, so you must do some turns in your method so you get a reasonable sized circle?
[22:20] <LaurenceB> you could do turns
[22:20] <LaurenceB> this would get more accorate results
[22:21] <mc-> does it home to the start position?
[22:21] <LaurenceB> small turns would theoretically work i.e. left/right 5 or so degrees
[22:22] <LaurenceB> I've decided to work out the wind on the way up
[22:22] <jcoxon> hey LaurenceB
[22:22] <LaurenceB> then its just a bit of stuff with vectors
[22:22] <LaurenceB> hey jcoxon
[22:23] <jcoxon> glider seems to be coming together
[22:23] <jcoxon> yours that is
[22:24] <mc-> bbl
[22:24] <LaurenceB> well I've come up with how it'll all work
[22:24] <jcoxon> any chance you could put together a little page on the wiki?
[22:24] <jcoxon> just a couple of bullet points on the theory
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[22:25] <LaurenceB> yes I've been meaning to do so for a while
[22:25] <jcoxon> cool, thanks
[22:26] <LaurenceB> problem is there are loads of ways to do it
[22:26] <jcoxon> good point
[22:26] <LaurenceB> I'm just not sure which is the best
[22:26] <LaurenceB> so I could put up a list with good and bad points to each technique
[22:28] <jcoxon> yeah
[22:28] <jcoxon> or just what you are doing
[22:28] <LaurenceB> but what I am doing is cheap and simple lol
[22:29] <jcoxon> isn't that the best way ;-p
[22:29] <LaurenceB> If you've got a i2c compass working with your gumstix you could just use that
[22:29] <jcoxon> yeah it works
[22:29] <LaurenceB> to keep the glider heading towards target
[22:30] <LaurenceB> thats probably the simplest method
[22:30] <jcoxon> my plan right now is when i go christmas shopping this week to get a cheap rc car
[22:30] <jcoxon> rebuild nomad into that with the digital compass and gps
[22:30] <jcoxon> and then can test some code
[22:30] <LaurenceB> just work out direction to target and adjust rudder (or steering)
[22:30] <jcoxon> i guess the rudder will be hte servo controlling the front wheels
[22:31] <LaurenceB> hte?
[22:31] <jcoxon> the
[22:31] <LaurenceB> sorry though that was the make of the servo lol
[22:31] <jcoxon> hehe
[22:31] <LaurenceB> I think my servos are too cheap
[22:32] <LaurenceB> they will jump around a bit when given pulses of uniform lenght
[22:32] <kc0wys> ok i definitely have to get off the computer now and study... lol
[22:32] <kc0wys> cya
[22:33] <LaurenceB> cya
[22:33] <kc0wys> ;)
[22:33] <jcoxon> cya kc0wys
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[22:33] <jcoxon> well won't the system be a negative feedback system
[22:33] <jcoxon> so the length of the pulse will vary slightly
[22:33] <jcoxon> just depends on the freq of the correction
[22:34] <LaurenceB> yes but I want to rely on the fact that servo position is prop to pulse lenght !
[22:35] <jcoxon> okay
[22:35] <LaurenceB> they were £4 each
[22:35] <LaurenceB> very cheap for 4gram servos
[22:36] <jcoxon> thats pretty cheap
[22:36] <LaurenceB> the parts are sellotaped together and the lable is handwritten
[22:36] <jcoxon> hehe
[22:36] <LaurenceB> cheap in more ways than one
[22:36] <jcoxon> thats impressive
[22:37] <LaurenceB> yes the motor inside is about 2mm by 5 mm
[22:37] <jcoxon> what sort of timescale do you see you glider on?
[22:38] <jcoxon> as in how long before real world testing?
[22:38] <LaurenceB> hope to get the glider part ready by the end of christmas vac
[22:39] <LaurenceB> real world testing could be done tomorrow but the weather is too bad
[22:39] <jcoxon> oh right
[22:39] <jcoxon> cool
[22:39] <jcoxon> i've got 20 days to build peg IV
[22:39] <jcoxon> so thats my christmas holidays
[22:39] <jcoxon> actually peg IV is going rather well
[22:39] <LaurenceB> i was testing on my bike today, put in churchill college and the servo lead me in the direction of cambridge
[22:40] <jcoxon> very cool
[22:40] <jcoxon> what are you doing about altitude
[22:40] <jcoxon> as in descent rate
[22:40] <LaurenceB> I was thinking of putting a cardboard arrow on the top and selling it on ebay as satnav
[22:40] <jcoxon> just letting it do its thing? or going to try and control it
[22:40] <jcoxon> haha
[22:41] <LaurenceB> I'm only going to have rudder control
[22:41] <jcoxon> okay
[22:41] <jcoxon> what sort of descent rate would you look for in the glider?
[22:41] <LaurenceB> It's built in a weetabix packet at the moments so that should create the perfect mad amateur satnav impression
[22:42] <jcoxon> excellent
[22:42] <LaurenceB> descent rate- whatever rate the glider descends at lol
[22:42] <jcoxon> okay
[22:42] <LaurenceB> I guess 4 m/s or something
[22:43] <jcoxon> cool
[22:43] <LaurenceB> I really want to make the mad satnav now
[22:43] <LaurenceB> i saw some mad sofware for satnav somewhere
[22:44] <LaurenceB> I swore at you if you drove over the speedlimit
[22:45] <LaurenceB> And intermittently played mad videos off the internet
[22:45] <jcoxon> hehe
[22:45] <LaurenceB> very strange, i'll try and find it again it's a free download
[22:46] <LaurenceB> I seem to remember there was a george bush voice option
[22:46] <LaurenceB> anyway....
[22:46] <jcoxon> indeed. anyway
[22:47] <jcoxon> gonna get my sister to make mission badges for peg IV
[22:47] <LaurenceB> cool
[22:48] <LaurenceB> just like nasa
[22:48] <jcoxon> yup
[22:48] <jcoxon> whoever helps will get one
[22:48] <jcoxon> and build a collection
[22:48] <LaurenceB> do you need help? how is work progressing?
[22:49] <jcoxon> its actually comming along really nicely
[22:49] <jcoxon> linked the gps up last night
[22:49] <jcoxon> so now needs a power supply, payload case and code
[22:49] <jcoxon> oh and perhaps a cutdown
[22:50] <jcoxon> helpwise i'm okay at present
[22:50] <jcoxon> but will need help at the launch
[22:50] <LaurenceB> do you have cameras?
[22:50] <jcoxon> well the one i was going to use was onboard nova 2
[22:50] <jcoxon> but i have a better one which is also wired up
[22:50] <jcoxon> so its just a matter of wireing it to a gpio
[22:51] <jcoxon> or putting together a 555 timer circuit
[22:51] <LaurenceB> I just descovered that for MiHAB2 the camera wasn't on the highest quality setting :(
[22:52] <jcoxon> oh dear
[22:52] <LaurenceB> but it wouldn't have helped that much, as the camera was having trouble with the contrast
[22:52] <jcoxon> mines a 6MP
[22:52] <LaurenceB> cool
[22:52] <jcoxon> but i'm not sure actually how good it is
[22:52] <LaurenceB> my 3Mp was effectively at 2Mp
[22:53] <LaurenceB> but exposure control and contrast correction is the main thing
[22:53] <LaurenceB> gimp is useful for correcting the images
[22:53] <jcoxon> yeah
[22:53] <jcoxon> really peg IV is a heavy lifter payload
[22:53] <jcoxon> basic
[22:54] <jcoxon> but can be used with other payloads
[22:54] <LaurenceB> have you considered adding a color bar thing that the camera will see?
[22:54] <jcoxon> such as above the glider on a train
[22:54] <jcoxon> hmmm,might be a nice idea
[22:54] <jcoxon> would reduce the image size i guess
[22:54] <jcoxon> but would certainly be interesting
[22:55] <icez> like MER pictures :d
[22:55] <LaurenceB> I thing it's in picasa, but I have seen SW where you can select a pixel and then color correct the image
[22:56] <LaurenceB> so that pixel ends up a certain colour
[22:56] <LaurenceB> But you must be able to do that in gimp
[22:56] <icez> I think MS Paint can do that
[22:56] <icez> :P
[22:56] <jcoxon> and use the colour bar to work it out
[22:56] <LaurenceB> MS paint lol
[22:57] <icez> you could also just use a small little 4-color square
[22:57] <icez> with carefully selected colors
[22:57] <icez> instead of a bar
[22:57] <icez> doesn't need to be huge
[22:57] <jcoxon> at least bar would keep the image in a usable form
[22:57] <LaurenceB> you would need to have it in direct sunlight really
[22:58] <jcoxon> have it on a little stick :-D
[22:58] <LaurenceB> so you would know what to expect
[22:58] <LaurenceB> I can't work out where to put the camera in my glider
[22:59] <LaurenceB> it's a bit big to fit in, I'm considering using a little mirror
[22:59] <jcoxon> what sort of shape is the glider?
[22:59] <jcoxon> a flying wing? or like a normal glider?
[22:59] <LaurenceB> regular plane shape
[22:59] <jcoxon> okay
[23:00] <icez> anyone ever thought of controlling a falling payload like a skydiver would?
[23:00] <jcoxon> parafoil?
[23:00] <icez> I guess you'd need 2 motors..but
[23:00] <icez> yeah
[23:00] <LaurenceB> If I have the camera facing down, then use a mirror in from of the lens so it can look out of the front
[23:00] <jcoxon> yup
[23:00] <jcoxon> LaurenceB, thats a good idea
[23:00] <jcoxon> icez, yeah the CU spaceflight are working on a parafoil descent
[23:00] <LaurenceB> yes it saves space
[23:00] <jcoxon> however you have stability risks
[23:01] <jcoxon> and the risk of tangling up
[23:01] <icez> true.
[23:01] <icez> I had another idea too
[23:01] <icez> that could work with 1 motor :]
[23:01] <icez> but I need to test it:)
[23:01] <LaurenceB> I wouldn't go for a parafoil as the behaviour is likely to be complex
[23:02] <LaurenceB> compared with a normal glider
[23:02] <icez> LaurenceB, well, pull 1 side, the thing turns, pull the other side, it turns the other way:)
[23:02] <LaurenceB> yes, but how much does it turn, and how fast?
[23:03] <icez> depends on the wind I guess:/
[23:03] <LaurenceB> Oh well I don't know much about parafoils
[23:03] <jcoxon> got an email back from the UTARC people
[23:03] <icez> and?:D
[23:03] <jcoxon> well my email has been forwarded to the main guys
[23:03] <icez> :|
[23:03] <jcoxon> but the person i emailed said that in the future they would be keen for help/cooperation
[23:04] <icez> they must have a pretty big to have to forward emails to the correct guys
[23:04] <icez> :)
[23:04] <icez> big team*
[23:04] <jcoxon> they are pretty professional
[23:04] <jcoxon> they are the ones that inspired me
[23:04] <LaurenceB> has anyone thought of a normal payload with a 2 axis tilting camera in the bottom?
[23:05] <jcoxon> i've thought about it
[23:05] <LaurenceB> I was experimenting with this last term
[23:05] <jcoxon> but haven't really worked out how you would control it
[23:05] <jcoxon> as in what to point it at
[23:05] <jcoxon> or would you make it take sweeps?
[23:05] <icez> there was the tilted mirror idea too :]
[23:05] <LaurenceB> I used a monocular taped onto the front
[23:05] <LaurenceB> you could get high res shots
[23:06] <LaurenceB> if the payload was steady
[23:06] <jcoxon> if the payload was steady :-p
[23:06] <icez> lol
[23:06] <jcoxon> hmmm i might rig the i2c compass onto peg IV as well
[23:06] <LaurenceB> - long line and "wings" on the side
[23:07] <LaurenceB> for air resistance
[23:07] <jcoxon> i've certainly thought about steading the payload
[23:07] <jcoxon> reaction wheels could also be used
[23:07] <LaurenceB> if the line to the balloon is longer it should help
[23:08] <LaurenceB> if the turbulence causing the motion has enough energy to cause the payload to rise height x with a swinging motion
[23:08] <LaurenceB> then the longer the line is
[23:09] <LaurenceB> the smaller this swing will cause the picture to wobble
[23:09] <LaurenceB> -worry for bad grammar lol
[23:09] <jcoxon> you could also overlay the picture
[23:09] <jcoxon> like amateur astronomical photographers do
[23:09] <jcoxon> with webcams
[23:10] <LaurenceB> - that was ment to say sorry but worry is more appropriate
[23:10] <LaurenceB> good plan
[23:10] <jcoxon> though of course reduced wobble will help
[23:11] <LaurenceB> I though of using servos to point the camera, but after some experience of them I don't think so
[23:11] <LaurenceB> too innacurate
[23:11] <LaurenceB> servo motors would be neded
[23:12] <icez> http://icez.org:81/pics/geek/mirror.png
[23:12] <icez> tadamm
[23:12] <icez> :/
[23:12] <jcoxon> hehe - i like it
[23:13] <LaurenceB> neat
[23:13] <jcoxon> considering that on most of the side pictures its just mainly black
[23:13] <jcoxon> well at least the top is
[23:13] <LaurenceB> thats like what I want to do on the glider
[23:13] <icez> just need a wide mirror
[23:14] <LaurenceB> xcept the bottom would be the glider nose
[23:14] <LaurenceB> I've got to go now :(
[23:14] <jcoxon> good to speak to you LaurenceB
[23:14] <LaurenceB> cya
[23:15] LaurenceB (n=laurence@host81-159-32-49.range81-159.btcentralplus.com) left irc:
[23:15] <jcoxon> hmmm it seems that the places that do embroided badges end up doing minimum runs of about 50
[23:15] <jcoxon> thats alot of badges
[23:15] <icez> I think what would be nice is to create a bunch of standard "things" to create any kind of payloads
[23:15] <icez> and you attach parts to make your payload:]
[23:16] <jcoxon> modular then
[23:17] <jcoxon> its an aim of most people - saves rebuilding
[23:17] <jcoxon> my plan for peg IV is to build a simple system
[23:17] <jcoxon> and then further missions can use peg IV as a reliable base and the have seperate systems
[23:17] <jcoxon> so perhaps additional cameras set up to take on a timer rather then from hte flight computer
[23:17] <jcoxon> of a set of experiements
[23:19] <icez> you know what else would be nice, if we could have an upward-mounted camera and do a night launch and see if we can get pictures of stars/the moon during the flight
[23:19] <jcoxon> yeah it would be nice
[23:19] <icez> I guess we could have clearer images up there
[23:19] <jcoxon> i'd worry about the wobble
[23:19] <jcoxon> but might get star trails
[23:19] <jcoxon> could be corrected
[23:19] <icez> too bad the balloon wouldn't like a telescope;)
[23:19] <jcoxon> :-)
[23:19] <jcoxon> right i'm off to bed
[23:19] <jcoxon> night all
[23:19] <icez> cya
[23:20] jcoxon (n=jcoxon@81-178-127-129.dsl.pipex.com) left irc: "I'm Elivized !"
[23:49] icez (n=icez@ip68-3-56-121.ph.ph.cox.net) left irc: Remote closed the connection
[23:51] icez (n=icez@ip68-3-56-121.ph.ph.cox.net) joined #highaltitude.
[00:00] --- Mon Dec 18 2006