highaltitude.log.20060717

[00:04] <jcoxon> right i'm off
[00:04] <jcoxon> night
[00:05] jcoxon (n=jcoxon@81-178-226-201.dsl.pipex.com) left irc: "Leaving"
[00:25] <henryhallam> night
[00:25] Nick change: henryhallam -> hh|sleep
[00:32] <phatmonkey> hh|sleep, yep
[00:32] <phatmonkey> sleep for me too, night all
[00:33] Nick change: phatmonkey -> phatmonkey-sleep
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[11:11] <jcoxon> hehe
[11:11] <jcoxon> a camera on ebay claims this: "3.1MP Camera Sensor interpolated to 11.0MP"
[12:15] <malgar> ...
[12:15] <malgar> interpolate is useless
[12:15] <malgar> d
[12:42] <phatmonkey-sleep> if you want a decent camera, get one from a well known brand
[12:42] <phatmonkey-sleep> or at least check out reviews and things!
[12:42] Nick change: phatmonkey-sleep -> phatmonkey
[16:14] <phatmonkey> defy, what sort of readings are you getting from your thermopiles?
[16:14] <phatmonkey> my circuit doesn't work very well, euch
[16:25] <jcoxon> hmmmm - found out why my cutdown didn't work
[16:25] <jcoxon> something to do with my cutdown script not the actual circuitry
[16:26] <phatmonkey> oh dear
[16:26] <phatmonkey> if you detonate the one you've got, please take a video :D
[16:26] <phatmonkey> for, uhm, research
[16:26] <phatmonkey> and watching stuff blow up is fun
[16:27] <jcoxon> it didn't blow up very wel
[16:27] <jcoxon> l
[16:27] <jcoxon> perhaps as it was lying on the grass
[16:27] <phatmonkey> did it seperate cleanly?
[16:27] <jcoxon> nope
[16:27] <phatmonkey> damn
[16:27] <jcoxon> rock solid
[16:27] <phatmonkey> maybe wire is the best solution then
[16:27] <jcoxon> the weak point was down into string hole
[16:27] <jcoxon> i've got one more left so i might string it up
[16:28] <jcoxon> perhaps it'll work
[16:28] <phatmonkey> i'll probably need to use wire anyway - the cutdown will have to be next to or inside the glider
[16:28] <phatmonkey> ok
[16:58] <jcoxon> right just blew the other one
[16:58] <jcoxon> (no video - sorry)
[16:59] <jcoxon> it does severe the string (i had a weight of 1kg on the end
[16:59] <jcoxon> bbl
[17:01] <phatmonkey> ok
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[19:06] Nick change: hh|sleep -> henryhallam
[19:07] <henryhallam> james, I'd put a bit more black powder in there if I were you
[20:18] <jcoxon> henryhallam, thats probably best
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[20:35] <henryhallam> evening Steve
[20:35] <henryhallam> see the landing today?
[20:39] <rocketboy> no - I have only just got in from work :-(
[20:40] <rocketboy> still need to earn money to feed my rocket/baloon habbit
[20:40] <henryhallam> hehehe
[20:40] <henryhallam> the videos are on nasa.gov I think
[20:40] <rocketboy> Good job they got down safe - I'll have a look later
[20:41] <henryhallam> yes apparently the bird crap survived, "a little charred but it's still there"
[20:42] <rocketboy> ;-)
[20:50] <rocketboy> BBL - I'm just off to download sone data from a rocket altimeter
[20:51] <henryhallam> neat
[21:15] <henryhallam> brb
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[21:42] <jcoxon> hey all
[21:42] <jcoxon> i'm thinking of getting a domain name for my ballooning site
[21:42] <jcoxon> any good ideas for a name?
[21:45] <jcoxon> www.pegasusballoonproject.net?
[21:47] <jcoxon> www.pegasushabproject.net
[22:02] defy-- (n=defy@60-234-234-98.bitstream.orcon.net.nz) joined #highaltitude.
[22:03] <jcoxon> hey defy--
[22:04] <defy--> hey :)
[22:04] Nick change: defy-- -> defy
[22:05] <jcoxon> i'm trying to think of a domain name for my new site
[22:05] <defy> hehe
[22:05] <jcoxon> www.pegasushabproject.net?
[22:05] <defy> what is hab?
[22:05] <jcoxon> move away from my uni space and therefore have google ads (in moderation)
[22:05] <jcoxon> high altitude balloon
[22:06] <jcoxon> and move space
[22:06] <defy> ah of course
[22:06] <jcoxon> more*
[22:06] <defy> you got a place to host it?
[22:06] <jcoxon> i'd get it with the domain i guess
[22:06] <defy> ah, i run a hosting company so if you want free hosting let me know :P my servers are based in texas and california
[22:07] <jcoxon> ooooooo
[22:07] <jcoxon> if you are offering that would be great
[22:08] <defy> i have opensrs reseller access to register domains also, but they aren't as cheap as some
[22:08] <defy> $10usd per year, but i think there are registrars down in the $3 mark at the moment
[22:10] <jcoxon> i was thinking of going for this originally:
[22:10] <jcoxon> http://www.streamlinenet.co.uk/pu.php
[22:10] <defy> true true, sweet...yea if you're after UK side hosting thats probably best
[22:11] <defy> i'm yet to get servers over there :P
[22:11] <jcoxon> i think i'll go with these guys - let them do all the hard work :-D
[22:11] <jcoxon> but thanks for the offer!
[22:11] <defy> i have a 1tb a month box at ev1 that uses none of its traffic
[22:12] <defy> i've been meaning to get some sites on there, but most of my customers are nz based
[22:12] <jcoxon> i personally don't see an issue about geography
[22:12] <defy> i should just throw a bt client on it, lo
[22:12] <jcoxon> :-D
[22:13] <jcoxon> just thought it would be nice to have more then 200mb and also be allowed some ads
[22:13] <defy> hehe
[22:13] <defy> the offer is there, disk and traffic are unmetered pretty much
[22:13] <defy> man this little camera is giving me grief
[22:13] <defy> i dont know if my serial wiring is screwed or if its the code, i need to get my hands on a scope
[22:14] <jcoxon> defy, so how would i go about getting a domain to your server?
[22:14] <jcoxon> hmmm do you get any data on the serial line?
[22:15] <defy> if you already own the domain youd just point the dns at my dns servers and i'd setup the acct, its pretty simple, otherwise i can register .com/net/org/uk/a bunch of other stuff through opensrs and do it that way..
[22:15] <defy> nah, tx and rx are stuck in the true possition
[22:15] Action: jcoxon wishes he had the gumstix 270 prototype sometimes
[22:15] <defy> at 3.3v
[22:15] <jcoxon> i don't already have the domain
[22:16] <defy> 270? hrm, i just saw that mentioned in the list but haven't read the thread yet...new cpu?
[22:16] <phatmonkey> hi all!
[22:16] <defy> phatmonkey :D
[22:16] <jcoxon> defy, yup tis the upgrade, usb, camera interface
[22:16] <phatmonkey> i can do hosting too, there's no point to pay for it! :D
[22:16] <phatmonkey> hi defy!
[22:16] <phatmonkey> i need to ask a question
[22:16] <defy> ohhhhh really, usb host??
[22:16] <phatmonkey> what sort of outputs are you getting from the thermopiles?
[22:17] <jcoxon> yup
[22:17] <defy> !! that would solve so many problems
[22:17] <phatmonkey> i have constructed the scalerobotics circuit myself for 6 thermopiles, but i'm getting useless data out of it
[22:17] <defy> phatmonkey in what sense?
[22:17] <phatmonkey> you should be using slugs ;)
[22:17] <defy> hrm
[22:17] <phatmonkey> what sort of range? when you point at warm/cold sources
[22:17] <defy> i get good data as long as i'm outside
[22:17] <phatmonkey> yeah
[22:17] <phatmonkey> when i point at the sky and ground, it just jumps about
[22:18] <phatmonkey> when i point both at the ground, it stays in the centre
[22:18] <phatmonkey> it jumps from high to low for some reason
[22:18] <defy> mine only has 4 sensors and was prebuild
[22:19] <phatmonkey> yeah
[22:19] <phatmonkey> what sort of range are you getting
[22:19] <phatmonkey> 512ish is centre i guess
[22:19] <defy> i haven't had a chance to REALLY test it, like outside of the subburbs, but for the most part it works outside, i get a big shift in values when tilting it either way, and they stay that way
[22:19] <phatmonkey> that's what i'm getting, and that works perfectly
[22:19] <phatmonkey> hmmm
[22:19] <defy> yea, i generally get in the low 500's as stable
[22:19] <phatmonkey> and what does it shift to?
[22:19] <phatmonkey> mine jumps around in the 450 to 550 range
[22:20] <defy> how many readings do you take from yours?
[22:20] <phatmonkey> maybe i have a dodgy capcitor in there that's flipping between voltages
[22:20] <defy> mine has 2 adc outputs, so each output is connected to 2 sensors
[22:21] <defy> but the values will go all the way up into the 8-900's
[22:21] <phatmonkey> yes, i've added another circuit so ihave 6 thermopiles and 3 outputs
[22:21] <defy> and stay _fairly_ stable
[22:21] <defy> cool
[22:22] <phatmonkey> hmmm
[22:22] <phatmonkey> odd
[22:22] <defy> but again i haven't had a good stable place to test other than outside on my deck, where there are lots of houses in the way, but i could tell taht it was definately working
[22:22] <phatmonkey> what sort of readings were you getting?
[22:22] <defy> 45degrees would give about 6-700 and 3-400 depending on the angle
[22:23] <defy> erm, not angle, direction :P
[22:23] <phatmonkey> ah, very nice
[22:23] <phatmonkey> would be 50 degrees actually, they have a 100 degree FOV ;)
[22:23] <defy> hehe
[22:24] <defy> it definately seems like enough sensitivity to keep an airframe stable
[22:24] <defy> I'm going to try combine it with rate sensors gyros, but i might not need them
[22:24] <jcoxon> phatmonkey, www.pegasushabproject.net? what do you think?
[22:31] <phatmonkey> how about .uk something? much cheaper and shows you're from the uk!
[22:31] <phatmonkey> www.pegasusproject.org.uk or something
[22:32] <phatmonkey> defy, gyros just sound like extra complication!
[22:32] <phatmonkey> zzz, i might just buy the boards off scalerobotics.com - that's where you got yours defy, yes?
[22:32] <phatmonkey> i have the amplifiers and thermopiles, they're the expensive bits
[22:32] <defy> possibly, but they interface the exact same way the thermopiles do, so the code was very easy
[22:32] <phatmonkey> yeah
[22:32] <defy> and it seems to pickup the smaller movements which the thermopiles don't pickup
[22:33] <defy> but it might not be needed, ill know once i get it in the air
[22:33] <defy> im hoping that there will be no wind today so i can test out my new pontoons on one of my planes out on the harbour
[22:34] <phatmonkey> nice
[22:34] <phatmonkey> i'll be getting my gear up in the air soon too, tis exciting!
[22:35] <defy> hehe
[22:35] <phatmonkey> i just need to get these thermopiles working, it's the last bit of hardware that needs doing
[22:35] <phatmonkey> http://www.uavs.net/schematicv11.jpg
[22:35] <phatmonkey> i've been following that, i'm sure it's right
[22:36] <defy> did you buy the kitsets ?
[22:36] <phatmonkey> nope, just built it on variboard
[22:36] <defy> cool
[22:47] <jcoxon> oooo now would be a sweet time to launch from cambridge
[22:48] <rocketboy> do the thermopiles need to be matched
[22:48] <rocketboy> ?
[22:48] <phatmonkey> as long as they're all the same model, they should work fine
[22:48] <phatmonkey> my centre works fine (512, half 1024 which is perfect)
[22:49] <phatmonkey> it goes all haywire when they are different temperatures
[22:49] <rocketboy> are these the same sort that are used in IR sensors? - like motion detectors?
[22:49] <phatmonkey> odd
[22:49] <phatmonkey> no, they only read heat
[22:49] <phatmonkey> temperatures
[22:49] <phatmonkey> they're used in those thermometers where you don't have to touch the object
[22:50] <phatmonkey> it's readings on IR radiation in particular
[22:50] <rocketboy> bit expensive for 4
[22:52] <rocketboy> (rocketboy is tight) - $140
[22:54] <phatmonkey> http://scalerobotics.com/store/catalog/product_info.php?products_id=28&osCsid=273a7fb3e5f78d4e9bd487ecc71ff270
[22:54] <phatmonkey> doesn't have to be!
[22:59] <rocketboy> ahh 4 for $35 (not $35 each)
[22:59] <phatmonkey> haha, yes!
[22:59] <rocketboy> thats more like it
[22:59] <phatmonkey> $35 each *would* be expensive, phew
[22:59] <phatmonkey> note that they supply a very small voltage
[22:59] <rocketboy> its a very simple idea like the sun seakers we use in model rocketry
[22:59] <phatmonkey> so that'll need amplfication and equalisation and all sorts of fun stuff
[23:00] <phatmonkey> ah right
[23:04] <defy> hey jcoxon do you know what kind of camera interface the 270 has exactly?
[23:04] <jcoxon> nope
[23:04] <defy> hrm, will be interesting to see
[23:04] <jcoxon> guess it'll be in the pxa270 specs
[23:04] <defy> yea
[23:05] <jcoxon> but its going to be a while before it exists
[23:05] <rocketboy> they use 4 photo detectors and a lens in the nose of the rocket - and balance an image of the sun across the sensors - if the sun moves more onto one sensor the rocket is moved the other way - to keep the system in balance
[23:05] <defy> end of year would be nice
[23:06] <phatmonkey> ah nice
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[00:00] --- Tue Jul 18 2006