highaltitude.log.20060618

[00:00] <Tiger^> http://www.national.com/ds/LM/LM1117.pdf
[00:00] <Tiger^> here's the data sheet
[00:00] <jcoxon> thanks Tiger^ for all this help :-D
[00:01] <Tiger^> no prob :)
[00:01] <Tiger^> oh, and buy the one in a TO220 package
[00:01] <Tiger^> or you'll have a hard time soldering smd ;)
[00:02] <Tiger^> hmm what else
[00:03] <Tiger^> buy a few capacitors
[00:03] <Tiger^> 10uF and 100uF
[00:03] <jcoxon> yeah i was just working that out
[00:04] <jcoxon> seems pretty simple though, just an input and output capacitor
[00:04] <Tiger^> yeah
[00:04] <Tiger^> take a look at page 17
[00:04] <Tiger^> that's what you need, a battery backed-up supply
[00:05] <jcoxon> so i'll need 2 then
[00:05] <Tiger^> just connect a second battery :)
[00:05] <Tiger^> instead the line supply
[00:05] <Tiger^> of*
[00:05] <Tiger^> jcoxon: yeah
[00:06] <jcoxon> hmmm i don't really understand the reason for the circuit
[00:07] <Tiger^> you said you want two battery sets?
[00:07] <jcoxon> well i've got one battery set for the gumstix
[00:07] <Tiger^> that's a lot better than connecting them in parallel
[00:07] <jcoxon> i'm really not worried about that
[00:07] <Tiger^> oh
[00:07] <Tiger^> ok
[00:07] <jcoxon> and now i'm going to have a second supply at 3.3v to the radio modem
[00:08] <jcoxon> taking your advice to seperate the rf device from the gumstix in regards to power
[00:08] <Tiger^> and a third one for the cameras? ;P
[00:08] <jcoxon> hehe the camera has its own supply :-D
[00:08] <jcoxon> and the phone as well
[00:08] <Tiger^> hehe
[00:08] <Tiger^> you didn't tell me you were sending up a power plant!
[00:08] <jcoxon> :-D i get to make a little circuit :-D
[00:09] <jcoxon> hehe
[00:09] <jcoxon> lots of power
[00:09] <jcoxon> not as many as macfreak though!
[00:10] <Tiger^> it's like those "this much power would be enough for Los Angeles for nine hours" on the discovery channel ;)
[00:10] <jcoxon> i think i'll get a pack of a range of capacitors they'll come in handy sometime
[00:10] <Tiger^> yeah, macfreak's laptop's power hungry
[00:11] <Tiger^> especially while running all those win98 processes! hehe
[00:11] <Tiger^> i've got two power buses
[00:11] <Tiger^> one for the flight computer/gps/cameras
[00:12] <Tiger^> and one for the radio (which does, of course, R.I.P.)
[00:13] <Tiger^> i've got a real problem with the battery holders
[00:13] <Tiger^> it turned out even solder doesn't stick to them
[00:13] <jcoxon> i think they are anodised
[00:13] <jcoxon> or something like that
[00:15] <Tiger^> yeah
[00:15] <Tiger^> they're also too flexible
[00:15] <Tiger^> :/
[00:15] <Tiger^> the plastic's too thin
[00:16] <Tiger^> one bump and it stops working
[00:16] <jcoxon> not good
[00:16] <Tiger^> yeah
[00:16] <Tiger^> not good at all
[00:17] <Tiger^> i hope i'll be able to get better ones on monday
[00:18] <Tiger^> if not i'm going to have to improvise
[00:20] <Tiger^> ok
[00:20] <Tiger^> i'll better be off
[00:20] <jcoxon> thanks for all the hel
[00:20] <jcoxon> p
[00:20] <jcoxon> cya
[00:20] <Tiger^> nite
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[20:29] <jcoxon> hey all
[20:32] <Weiss> evening
[20:33] <jcoxon> hey Weiss
[20:39] <jcoxon> hmm, trying to decide what operating system to use to track peg III with
[20:39] <jcoxon> i dual boot ubuntu and os x
[20:40] <Weiss> hehe
[20:40] <Weiss> what do you need it to do?
[20:40] <icez> jcoxon, linux, of course.
[20:40] <icez> :P
[20:40] <jcoxon> well
[20:41] <jcoxon> i would really like some sort of mapping software
[20:41] <jcoxon> i can read my radio modem from both as its literally a matter of monitoring a serial port
[20:41] <jcoxon> and battery life would be rather important!
[20:41] <jcoxon> mac os x is better as is expected
[20:42] <jcoxon> in regards to mapping software either gpsdrive on linux or google earth on mac os x
[20:42] <icez> well there is this mapserver thingy you could use, and tweak it (easily) to map out points on it
[20:44] <jcoxon> oh i can only login to the gumstix from linux as it has usbnet support
[20:49] <icez> os x doesn't have usb support ?!
[20:49] <icez> :/
[20:49] <Weiss> you can get Google Earth on Linux now, if that helps
[20:50] <jcoxon> true but my graphics card isn't accelerated so it'll be rather slow
[20:50] <icez> actually
[20:50] <icez> it's not slow at all
[20:50] <jcoxon> though the more i think of google earth the less i think its useful
[20:50] <icez> i have an _average_ card and it works quite fast
[20:50] <jcoxon> i really need good maps, not aerial photos
[20:51] <jcoxon> i've got a 800mhz ppc
[20:51] <icez> oh
[20:51] <icez> how fast do you need it?
[20:51] <jcoxon> it will be nice to plot the altitudes
[20:51] <jcoxon> but trying to chase could be interesting
[20:55] <Ed_Moore> hey al
[20:55] <Ed_Moore> l
[21:00] <jcoxon> hey Ed_Moore
[21:01] <Ed_Moore> how are you?
[21:01] <jcoxon> okay thanks
[21:01] <Ed_Moore> cool
[21:02] <Ed_Moore> is peg 3 in a decent state?
[21:02] <jcoxon> its pretty nearly ready for launch
[21:02] <jcoxon> have to rebuild the phone connector
[21:02] <jcoxon> radio modems are sorted
[21:11] <Ed_Moore> oh fantastic
[21:11] <Ed_Moore> they didn't take too much persuation to work then?
[21:12] <jcoxon> nope
[21:12] <jcoxon> not that difficult
[21:12] <jcoxon> its perhaps not the most eligant of designs though :-D
[21:17] <Ed_Moore> lol, in what respect is it not es refined as it could be?
[21:19] <jcoxon> well i literally force data down through the serial port
[21:20] <jcoxon> instead of perhaps using pppd
[21:20] <jcoxon> and login in
[21:20] <Ed_Moore> pah, details
[21:20] <Ed_Moore> :)
[21:20] <Ed_Moore> put serial in at one end, get it out at the other
[21:20] <Ed_Moore> simple as :)
[21:47] <Tiger^> as a payload string :)
[21:47] <Tiger^> hi guys ;)
[22:03] <Ed_Moore> heya
[22:14] phatmonkey (n=phatmonk@150.121.2.81.in-addr.arpa) joined #highaltitude.
[22:14] <phatmonkey> hi all
[22:15] <Tiger^> hi phatmonkey
[22:18] <phatmonkey> jcoxon, thermopiles have been ordered, might have something running by next week :D
[22:18] <phatmonkey> ... counting this sunday as the start of the upcoming week
[22:18] <phatmonkey> so, um, a week's time
[22:24] <phatmonkey> we need to think about a logo for ukhas too :o
[22:24] <phatmonkey> anybody have any ideas?
[22:25] <phatmonkey> would be nice to get some stickers printed out to slap on our payloads :D
[22:27] <icez> uhm
[22:27] <icez> i could try something
[22:27] <icez> if you give me about 30 minutes or more
[22:28] <phatmonkey> ooh, nice
[22:29] <phatmonkey> a simple round would be good i suppose
[22:29] <icez> if the page starts loading..
[22:29] <phatmonkey> *round one
[22:29] <phatmonkey> ah yes, sorry about that
[22:29] <phatmonkey> having routing issues
[22:29] <icez> oh
[22:29] <icez> what are your colors?:P
[22:29] <phatmonkey> I... have no idea
[22:30] <icez> okay.
[22:30] <icez> :P
[22:30] Action: phatmonkey pokes jcoxon
[22:34] <phatmonkey> anywho, to sleep goes i
[22:34] <phatmonkey> night all
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[23:02] <icez> well
[23:06] <icez> did this fast: http://icez.org:81/pics/ukhas/
[23:15] <jcoxon> icez, those are really cool
[23:16] <icez> thanks
[23:16] <jcoxon> bbl
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[00:00] --- Mon Jun 19 2006