highaltitude.log.20060719

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[15:59] <macfreak4> hey
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[17:07] <phatmonkey> hi all!
[17:07] <macfreak4> hi
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[17:48] <icez> hey jcoxon
[17:48] <jcoxon> hey icez
[17:48] <phatmonkey> hey james!
[17:48] <macfreak4> hey everyone :)
[17:48] <jcoxon> hey ben
[17:48] <macfreak4> i haven't been on in a while...
[17:48] <phatmonkey> james, your parachute, does it have somewhere on the top to attach a drogue?
[17:49] <jcoxon> good holiday?
[17:49] <jcoxon> not this one
[17:49] <macfreak4> me? no i moved -- internet was down
[17:49] <macfreak4> has someone launched recently?
[17:49] <jcoxon> yup
[17:49] <jcoxon> i did
[17:49] <macfreak4> oh o.O
[17:50] <icez> a few people did actually
[17:50] <jcoxon> http://www.srcf.ucam.org/~jac208/pegasus/pegasus3.html
[17:51] <jcoxon> got my camera for peg IV
[17:51] <jcoxon> 6MP for 99 pounds
[17:51] <phatmonkey> ah nice
[17:51] <macfreak4> :)
[17:51] <phatmonkey> :|
[17:51] <phatmonkey> you're paying for the resolution, not the quality of the image i guess :)
[17:51] <phatmonkey> what camera is it?
[17:52] <jcoxon> samsung Digimax S600
[17:52] <jcoxon> its got a bit of a large screen
[17:52] <jcoxon> but has a power saving option which turns it off after a period of time
[17:53] <phatmonkey> ah righty
[17:53] <phatmonkey> i wonder if any of the chutes from that site you bought yours from can have drogues attached
[17:53] <jcoxon> its actually a very nice general camera
[17:53] <jcoxon> hmmm the ones i've bought haven't had that loop
[17:54] <phatmonkey> http://www.the-rocketman.com/chutes.html
[17:54] <phatmonkey> they're really good chutes apparently, i'll ask them about it
[17:54] <phatmonkey> they'll probably have suggestions for releasing it nicely too
[17:56] <macfreak4> jcoxon: looks like you had a good flight ;)
[17:56] <jcoxon> yeah it was very good
[17:56] <macfreak4> just finished skimming your pages about p3
[17:56] <jcoxon> balloon itself wasn't great
[17:56] <jcoxon> a bit dodgy
[17:57] <macfreak4> yeah it looks a bit dark in color
[17:57] <macfreak4> does that reflect its age?
[17:57] <jcoxon> perhaps
[17:57] <macfreak4> well it got you to 60,000ft
[17:58] <macfreak4> anyhoo i've been working on the video/imaging programming for ensure-1 and so far i have been able to capture video and transmit pictures over the uhf transmitter
[17:59] <jcoxon> ooo nice
[17:59] <icez> cool:D
[17:59] <macfreak4> i have it put the gps coordinates and sensor data on the images so that in case rtty fails i can still recover
[17:59] <icez> cool too
[18:00] <macfreak4> had to go back to windows, for the sake of time
[18:00] <macfreak4> this time using a stripped-down Windows 2000 install, instead of Win 98
[18:00] <icez> oh noes
[18:00] <jcoxon> :-P
[18:00] <macfreak4> which is actually *faster* than 98
[18:00] <macfreak4> have no idea why..
[18:00] <icez> mmm because it doesn't run on DOS maybe
[18:00] <macfreak4> haha ya probably
[18:01] <macfreak4> win 2000 is actually pretty stable, without a load of sh*t installed on it
[18:01] <icez> jcoxon: for the propulsion on your satellite idea, maybe you could use computer fans instead of compressed air
[18:01] <jcoxon> hmmm i worry about the lack of air itself
[18:02] <icez> they were talking about a communications satellite (after the katrina thing) and they were using a light-airplane propeller :|
[18:03] <phatmonkey> yeah, there's barely any air up there
[18:03] <icez> it was a bit bigger than your projects though:D
[18:03] <phatmonkey> you would need a huge prop, computer fans would be useless ;)
[18:03] <phatmonkey> what would be a very cool - a little video camera on the glider
[18:03] <jcoxon> its something to look into
[18:03] <phatmonkey> wow
[18:03] <icez> the pencam takes videos..but it's crappy video
[18:03] <phatmonkey> yeah, and it would need to last for a few hours
[18:04] <phatmonkey> somebody tell me if you find something like that... like that disposable video camera
[18:04] <macfreak4> here in the us it would only take getting a 1-2 watt atv transmitter and a pinhole camera
[18:04] <macfreak4> but in the uk those damn laws...
[18:04] <macfreak4> a different story
[18:04] <phatmonkey> it does suck
[18:04] <icez> pinhole cameras are illegal?
[18:04] <icez> :/
[18:04] <macfreak4> no
[18:04] <macfreak4> the transmitter
[18:04] <macfreak4> :P
[18:04] <phatmonkey> transmitting it!
[18:04] <phatmonkey> yeah
[18:04] <phatmonkey> lol
[18:04] <jcoxon> you could use 2.4ghz for video
[18:04] <icez> beh
[18:05] <phatmonkey> 2.4ghz is hard to transmit far :|
[18:05] <macfreak4> it can be done
[18:05] <phatmonkey> there's a limit of 50mw
[18:05] <macfreak4> oh
[18:05] <macfreak4> then no
[18:05] <phatmonkey> sigh, i bought an 800mw video transmitter off ebay quite easily, i don't think they care that much!
[18:07] <phatmonkey> hmmm
[18:07] <phatmonkey> maybe i should go the insulated lipoly route
[18:08] <phatmonkey> i wonder if there are any freezers we can borrow or use that go down to extreme low temperatures, it would be great for testing batteries
[18:08] <jcoxon> liq ntrogen
[18:09] <phatmonkey> good idea, where can we get that from?
[18:09] <jcoxon> of BAS have freezers
[18:09] <jcoxon> or*
[18:09] <phatmonkey> or we could bung some batteries up on a balloon purely for testing
[18:09] <phatmonkey> if i insulate carefully (and protect so they don't explode...), lipolys might do the job
[18:10] <phatmonkey> they're far easier to get hold of that standard li-ions, and they're lighter too
[18:10] <phatmonkey> http://www.all-battery.com/index.asp?PageAction=VIEWPROD&ProdID=473
[18:10] <phatmonkey> rechargable 6.3Ah in 120g
[18:10] <phatmonkey> it's insane
[18:11] <jcoxon> brb
[18:16] <macfreak4> i was wondering, what about buying some li-ion camcorder batteries on ebay that go for <10$ and ripping out the cells?
[18:17] <macfreak4> that would be really cheap...
[18:26] <phatmonkey> yes
[18:26] <phatmonkey> i wouldn't really trust those cells though :)
[18:26] <phatmonkey> normal li-ions do survive lower temperatures, but they are rather heavy and bulky
[18:26] <phatmonkey> and that is a big issue for me
[18:31] <jcoxon> right well thats my new camera disassembled
[18:33] <jcoxon> i'll do the shutter hacking later :-D
[18:33] <jcoxon> best not push my luck hehe
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[18:38] Nick change: Tygrys -> Tiger^
[18:38] <phatmonkey> nice!
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[19:10] <rocketboy> bbl
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[22:37] <jcoxon> phew
[22:37] <jcoxon> rigged up my new camera :-D
[22:44] <macfreak4> yay
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[22:48] <jcoxon> didn't want to blow this one up :-D
[22:48] <jcoxon> to expensive
[22:50] <macfreak4> yea i had a hard time getting myself to open up my 70$ radio to rig up the transmit button and power leads
[22:50] <macfreak4> too expensive to break...
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[00:00] --- Thu Jul 20 2006