highaltitude.log.20070107

[00:00] <jcoxon> brb rebooting
[00:00] jcoxon (i=jac208@pip.srcf.societies.cam.ac.uk) left irc: "[BX] For a good time, call 1-900-4BitchX"
[00:01] Nick change: ebola -> Ebola
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[00:09] <jcoxon> hey all i'm back
[00:16] <rocketboy> hiya - just packing the last few things for tomorrow
[00:16] <jcoxon> right
[00:16] <jcoxon> whats the plan?
[00:16] <jcoxon> no fly for you?
[00:23] <rocketboy> yes no fly for me - I'll bring everything elese need3d though
[00:26] <jcoxon> okay
[00:27] <jcoxon> Laurence and I are putting together a little payload to make morse code from gps
[00:27] <jcoxon> toggling a gpio
[00:27] <jcoxon> if it works the great
[00:27] <jcoxon> if not then no loss
[00:27] <Max0> :)
[00:28] <rocketboy> OK - anyways - I'm off to bed - CU AM - 8:30 - cambridge where
[00:28] <rocketboy> BTW - the phone no I have for you didn't work
[00:29] <rocketboy> when I tried it the other day (when I dropped the igniters off)
[00:30] <jcoxon> can you meet us at St Catharine's
[00:30] <jcoxon> its on the corner of sliverstreet and trumpington street
[00:30] <jcoxon> i'll email you my mob
[00:31] <rocketboy> got a postcode
[00:32] <rocketboy> ?
[00:32] <jcoxon> cb21rl
[00:34] <rocketboy> yeah no probs
[00:34] <jcoxon> call me when you are need
[00:35] <Max0> jcoxon: did you work out how to turn off the network ports?
[00:35] <jcoxon> no
[00:36] <Max0> just been reading info on your site
[00:36] <Max0> :)
[00:36] <jcoxon> well i can turn off wireless
[00:36] <Max0> does wireless use much power?
[00:36] <rocketboy> cutters work quite well
[00:38] <rocketboy> OK - I got your phone no - tnx - cu tomorrow
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[01:10] <Max0> jcoxon: hows it coming together?
[01:16] <Henry_> ah the sweet smell of melting blue foam
[01:16] <Henry_> anyone got any ideas on a mechanism I can use to turn rotating motion into disconnecting from balloon motion?
[01:17] <Henry_> if only I had lego :(
[01:18] <Max0> disconnecting
[01:18] <Max0> ?
[01:18] <Max0> eg stop it spinning?
[01:18] <Henry_> I have a servo that turns 90 degrees when we want to cut down
[01:19] <Henry_> except at the moment it's spazzing out for no reason, but never mind that
[01:19] <Henry_> I've made up a pin arrangement so when it pulls the pin the balloon will release
[01:19] <Henry_> but now I need a mechanism to make the servo pull the pin
[01:20] <Max0> ic
[01:20] <Max0> id have used a electo magnet
[01:21] <Max0> to keep it closed when when the current changes it opens n lets go
[01:21] <Max0> then when*
[01:22] <Henry_> nah that means MOSFETs and bigger batteries, it's servo or nothing
[01:22] <Henry_> for tomorrow anyway
[01:22] <Max0> will the servo have enough power to pull a pin with the payload?
[01:22] <Max0> with the weight of it*
[01:22] <Henry_> yeah the servo is pretty strong, it's got more torque than I have
[01:22] <Max0> hehe niffty
[01:22] <Henry_> and the nature of the pin means it shouldn't take that much force to pull anyway
[01:23] <Max0> could u use a cable on the servo and pin
[01:23] <Max0> and have th e cable say mounted on the inside of the box
[01:23] <Max0> like 20 cm or something
[01:24] <Henry_> yeah I think I'm going to do something like that
[01:24] <Henry_> effectively a pulley
[01:24] <Max0> yuh
[01:24] <Max0> :D
[01:25] <jcoxon> hey Henry_
[01:25] <jcoxon> hows it going?
[01:25] <Henry_> hi
[01:25] <Henry_> see above
[01:25] <jcoxon> can't scroll up
[01:25] <Henry_> I'm trying to do something mechanical, which isn't really my area of expertise
[01:25] <Henry_> anyway the circuit works fine and drives the servo
[01:25] <jcoxon> well we are trying to do something with perl but it really ain't are area of expertise :-D
[01:26] <Max0> Henry_: could you use fishing line?
[01:26] <Henry_> I'm trying to make it pull out a pin which will release the balloon
[01:26] <Henry_> none handy :P plenty of string though
[01:26] <Max0> jcoxon: whats the perl prob
[01:26] <jcoxon> hmmm i'll post in pastbin one sec
[01:26] <Max0> ive coded a irc bot in perl b4
[01:26] <Max0> as well as afew port scannes etc
[01:31] <jcoxon> fixed it now
[01:34] <Max0> :)
[01:46] <Max0> im goin to bed
[01:46] <Max0> good luck
[01:46] <Max0> ill be testing the bot tomorrow :D
[01:47] <Henry_> night
[02:13] <jcoxon> Henry_ is your radio fm?
[02:22] <Henry_> FSK
[02:22] <jcoxon> okay
[02:22] <jcoxon> we are working out how to toggle the gpio in regards to the data
[02:23] <jcoxon> laurence wants to implement 4bit code with one start bit
[02:23] <jcoxon> instead of morse
[02:23] <jcoxon> as we can't really get less then one second delay
[02:23] <Henry_> how do you plan to receive it?
[02:23] <Henry_> oh
[02:23] <Henry_> what, really?
[02:23] <jcoxon> stereo input into a laptop from steve's radio
[02:23] <jcoxon> and then audacity
[02:24] <jcoxon> or waterfall display program
[02:24] <Henry_> decoding the 4-bit by hand?
[02:24] <Henry_> /ear
[02:24] <jcoxon> yeah its only one board
[02:24] <jcoxon> by sight off screen
[02:24] <Henry_> could do
[02:24] <Henry_> make sure the message is nice and short
[02:24] <Henry_> and only numbers
[02:24] <jcoxon> yup
[02:24] <jcoxon> lat, long and alt
[02:24] <Henry_> ought to work
[02:25] <jcoxon> hows it going your end?
[02:25] <Henry_> I'm off to bed now though, I'll get up around 7:30 and hopefully the glue on this cutdown will have dried
[02:25] <jcoxon> umm we need that antenna
[02:25] <jcoxon> and hte battery holder
[02:26] <Henry_> oh, you need them now?
[02:26] <Henry_> ok I'll bring over the radio gear
[02:26] <jcoxon> okay cool
[02:26] <Henry_> which is your room?
[02:26] <jcoxon> call me when you are outside catz
[02:26] <jcoxon> the door will be locked
[02:26] <Henry_> ok
[02:27] <Henry_> do you have wire and stuff?
[02:27] <jcoxon> yup
[02:27] <Henry_> ok
[02:27] <jcoxon> solder, gluegun
[02:27] <Henry_> see you shortly
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[03:27] <Max0> cant sleep
[03:27] <Max0> hehe
[03:27] <Max0> jcoxon: there is a command to sleep in millsecods
[03:30] <Max0> usleep() to get milliseconds on Linux.
[03:48] <jcoxon> hey Max0
[03:48] <jcoxon> need some help
[03:50] <Max0> np
[03:50] <Max0> sup
[03:50] <jcoxon> right
[03:50] <jcoxon> we trying to toggle this damn gpio
[03:51] <jcoxon> basically you echo a command to a proc file to change the state of the gpio
[03:51] <jcoxon> and perl just won't let us do it
[03:51] <jcoxon> so i'm putting together a c program to echo the command "on"
[03:51] <jcoxon> sleep for 0.33seconds
[03:51] <jcoxon> echo off
[03:51] <jcoxon> which can then be called by perl when needed
[03:52] <Max0> so... you want to create a perl scipt that echos "on" to a file and sleeps for 033 then what?
[03:53] <jcoxon> the echos off
[03:53] <Max0> is this for the gps
[03:53] <jcoxon> however its to a proc file which isn't playing nice
[03:53] <jcoxon> nah this is to toggle the radio in a form of morse code
[03:53] <jcoxon> with the location
[03:54] <Max0> ok.. think im with you
[03:54] <Max0> so you want on sleep 033 the off
[03:54] <jcoxon> yup
[03:54] <Max0> do you have usleep?
[03:54] <jcoxon> the command for on from the shell script is:
[03:55] <jcoxon> echo "GPIO out set" >/proc/gpio/GPIO61
[03:57] <Max0> print "ok\n";
[03:57] <Max0> select(undef, undef, undef, 0.25);
[03:57] <Max0> print "off\n";
[03:57] <Max0> that does 250 milliseconds
[03:58] <jcoxon> i want to write that to /proc/gpio/GPIO61
[03:59] <Max0> when you run the scipt
[03:59] <Max0> do this
[03:59] <Max0> perl file.pl > /proc/gpio/GPIO61
[04:00] <Max0> or >>
[04:00] <Max0> sorted?
[04:00] <jcoxon> oh right
[04:02] <Max0> u might need a & if you want it to run in the background
[04:02] <Max0> did it work?
[04:03] <jcoxon> doesn't work
[04:03] <jcoxon> think i might have written it in C
[04:03] <jcoxon> just about to compile it
[04:03] <Max0> what didnt work the perl file
[04:04] <Max0> or the output
[04:04] <jcoxon> yeah the perl file
[04:04] <Max0> did it error?
[04:04] <Max0> or just not work at all
[04:04] <jcoxon> didn't error
[04:05] <jcoxon> ran fine just didn't change the gpio
[04:05] <Max0> so just the timmer?
[04:05] <Max0> ok try this
[04:05] <Max0> perl file.pl > test
[04:05] <jcoxon> just did
[04:05] <Max0> did it create the file
[04:06] <Max0> with on and off?
[04:06] <jcoxon> GPIO out setGPIO out clear
[04:06] <jcoxon> those are on and off
[04:07] <Max0> echo "GPIO out set" >/proc/gpio/GPIO61
[04:07] <Max0> are you missing a set?
[04:07] <Max0> or need a space?
[04:08] <Max0> [04:07] <jcoxon> GPIO out setGPIO out clear
[04:08] <jcoxon> well they should be done one after the other
[04:08] <jcoxon> GPIO out set
[04:08] <jcoxon> then
[04:08] <jcoxon> GPIO out clear
[04:09] <jcoxon> a shell script can be written but it can only sleep for 1 second
[04:09] <Max0> what happend with my shell scipt
[04:10] <Max0> did it sleep
[04:10] <Max0> it should have also put on and off on differnt lines
[04:11] <jcoxon> what shell script? sorry must of missed it/getting tired
[04:11] <Max0> sorry perl scipt
[04:11] <Max0> heh it is 4am :D
[04:12] <Max0> [03:58] <Max0> print "ok\n";
[04:12] <Max0> [03:58] <Max0> select(undef, undef, undef, 0.25);
[04:12] <Max0> [03:58] <Max0> print "off\n";
[04:12] <Max0> try playing with the 0.25 to change the time
[04:12] <Max0> and just print it to screen
[04:12] <Max0> to test the timing
[04:14] <jcoxon> select not implemented
[04:14] <Max0> whats the version of perl
[04:15] <jcoxon> its microperl
[04:15] <jcoxon> :(
[04:16] <jcoxon> 5.8.7
[04:20] <Max0> do you have usleep
[04:20] <Max0> as a shell command
[04:20] <jcoxon> no
[04:20] <Max0> could you wget it?
[04:20] <jcoxon> probably not
[04:20] <jcoxon> would require a cross compile
[04:20] <jcoxon> and that won't work till i get my buildroot finished
[04:20] <jcoxon> its compiling right now
[04:22] <Max0> http://www.therefan.com/TherePerl4.html
[04:23] <Max0> that has some code.. dont know if it will work tho
[04:25] <jcoxon> hmmm i'm not sure
[04:25] <jcoxon> i've got this c code ready
[04:25] <jcoxon> hopefully it'll work once i can compile it
[04:25] <jcoxon> and then i can get perl to call it to make the beeps
[04:25] <Max0> heh fingers crossed
[04:26] <jcoxon> my poor 800mhz ppc laptop is working its hardest to compile the gumstix buildroot monster
[04:27] <Max0> you have to redo the whole thing?
[04:28] <jcoxon> i deleted it to get space for the openwrt buildroot
[04:28] <Max0> ah right
[04:28] <Max0> ive been looking at routers on ebay to get testing
[04:28] <Max0> you did well gettin yours
[04:29] <Max0> my gps card is v similar to yours
[04:30] <jcoxon> cool
[04:32] <Max0> i need two serial ports
[04:32] <Max0> one for gps and one for the phone
[04:32] <jcoxon> yeah
[04:33] <Max0> i might try a dlink.
[04:33] <jcoxon> you going for phone or radio?
[04:33] <Max0> i cant find any cheap radios
[04:33] <Max0> i cant find any to be honest
[04:34] <Max0> if i could i would try one as well if its cheap
[04:34] <jcoxon> oh they are made by people
[04:34] <Max0> can u buy a kit?
[04:34] <jcoxon> hmmm actually rocketboy was thinking of making a script
[04:34] <jcoxon> a kit
[04:35] <jcoxon> come on bloody buildroot
[04:35] <Max0> ive got a scanner
[04:35] Action: jcoxon needs sleep
[04:35] <Max0> so would b cool
[04:35] <Max0> ive decoded pager messages with it
[04:35] <Max0> so would be cool to write a app to decode gps
[04:35] <jcoxon> might need you to decode our messages if i finish this damn code
[04:36] <jcoxon> if it works i'll send you details of how to decode it
[04:36] <Max0> ok cool
[04:36] <Max0> mght be hard to do..
[04:36] <Max0> but ill try
[04:36] <jcoxon> well at least you'll know its us
[04:37] <Max0> yuh
[04:38] <Max0> 434.075?
[04:39] <jcoxon> i think so
[04:39] <jcoxon> check the logs
[04:41] <Max0> http://wiki.ukhas.org.uk/communication:piii_experience
[04:42] <Max0> looks smalll
[04:42] <Max0> :)
[05:00] <jcoxon> it works
[05:00] <jcoxon> bed now
[05:00] <jcoxon> night
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[10:41] <Max0> !postion
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[10:43] <Professor> evenin
[10:43] <Professor> '/2
[10:44] <Professor> er, disregard that '/2, hehe
[10:45] <Max0> morning
[10:45] <Professor> anything going on ?
[10:46] <Max0> ive just woke up
[10:46] <Professor> ah, it's almost 4am. I'm about to go to bed
[10:46] <Max0> me and jcoxon wjere up till 5
[10:47] <Max0> doesnt look like its moved yet
[10:47] <Professor> ah
[10:47] <Professor> I want to launch my ballon in the spring
[10:47] <Max0> :)
[10:47] <Professor> I gotta figure out a battery solution for my radio transpondre
[10:48] <Professor> I suspect the box of lithium batteries I purchases is bad
[10:57] <Max0> why do you think the batteries are bad?
[11:05] <Professor> extremely short battery life, seconds :)
[11:06] <Professor> 2 AA size lithiums put out about 7 volts. I should be able to run my gps on that for a week
[11:06] <Max0> heh
[11:06] <Professor> my current consumption is pretty darn low
[11:07] <Professor> one of these days I'll wire one up to a resistive load and monitor it and record the discharge curve to see for sure
[11:07] <Max0> i got a gps board on ebay yesterday
[11:07] <Max0> it needs 4AA
[11:08] <Professor> my garmin gps runs for days on 2 AA batteries
[11:08] <Professor> I put a tiny board together that is much lighter than the garmin unit though (based around a trimble OEM module)
[11:09] <Professor> the garmin is not suited for this application though for a bunch of reasons
[11:09] <Max0> mine is similar to <jcoxon>
[11:10] <Professor> http://www.x-division.com/gallery/v/wxballoon/payload/
[11:11] <Professor> http://www.x-division.com/gallery/v/LATS/IMG_2000_001.jpg.html <--custom gps board
[11:13] <Max0> cool
[11:14] <Max0> http://cgi.ebay.co.uk/Navman-Jupiter11-12-channel-GPS-module-board-receiver_W0QQitemZ180070408272QQihZ008QQcategoryZ4668QQssPageNameZWDVWQQrdZ1QQcmdZViewItem?hash=item180070408272
[11:14] <Max0> thats the one i bought yesterday
[11:18] <Professor> right on
[11:18] <Professor> okay, I need to get some sleep, tired as a mofo
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[11:49] Nick change: Max0 -> Max00
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[15:38] <jcoxon> hey mc-
[15:38] <jcoxon> we pretty much scrubbed the launch
[15:38] <mc-> hi jcoxon, sorry I didn't make today.
[15:38] <jcoxon> launched a balloon with a radar reflector, cutdown and radio beacon
[15:38] <jcoxon> didn't miss anything
[15:38] <mc-> that's good, I was having big regrets
[15:39] <mc-> whose cutdown did you use?
[15:39] <jcoxon> Henry from the nova team made one last night
[15:39] <jcoxon> it was on a timer and was mechanical
[15:39] <mc-> mechanical timer?
[15:39] <jcoxon> though from tracking the beacon we don't think it worked
[15:40] <jcoxon> no sorry the mechanism was mechanical
[15:40] <jcoxon> it was servo which removed a pin
[15:40] <jcoxon> releasing hte balloon
[15:40] <mc-> bb in a few mins
[15:41] <Max00> so did you lauch?
[15:42] <jcoxon> sort of
[15:42] <jcoxon> i didn't launch either of my payloads
[15:42] <jcoxon> peg IV was playing up and crashed after sending a text
[15:42] <jcoxon> and the one we cobbled together last night actually was working
[15:42] <jcoxon> but lost gps lock and never really regained it
[15:42] <jcoxon> and i had forgotten the cable to debug it
[15:44] <jcoxon> we did launch a radio beacon which just transmitted a tone and a morse code callsign
[15:44] <Max00> cool
[15:45] <Max00> did that work?
[15:45] <jcoxon> yeah
[15:45] <jcoxon> we tracked it for a while
[15:45] <jcoxon> but gave up after about 2 hours - didn't really expect to find it
[15:46] <jcoxon> but we had a balloon filled and its good practice to track it manually
[15:46] <jcoxon> some one might find it...
[15:46] <Max00> how do you track it from the morse code or from the signal strenth
[15:47] <jcoxon> signal strength
[15:48] <Max00> the bot died
[15:48] <Max00> :(
[15:48] <jcoxon> yeah i saw that
[15:48] Action: jcoxon kicks zeusbot
[15:48] <jcoxon> stupid bot
[15:51] <Max00> heh
[15:51] <Max00> ive been researching routers all day
[15:51] <jcoxon> hmmmm
[15:51] <jcoxon> i'm a little annoyed with my router
[15:51] <Max00> how come?
[15:51] <jcoxon> it was being annoying and crashing
[15:52] <jcoxon> and my gumstix was behaving - was easier to use
[15:52] <Max00> :(
[15:52] <jcoxon> perhaps cause i'm use to it
[15:52] <Max00> well i think i might have a go ad moddin a router to riun openwrt and log gps postions of wifi networks
[15:53] <Max00> just leave it running in my car
[15:53] <Max00> then more it over to a payload for a ballon
[15:53] <Max00> even thought about making a rc car controled via apache with a webcam
[15:53] <Max00> using wifi
[15:54] <Max00> its crazy what you could do
[15:55] <jcoxon> :-D
[16:16] <mc-> what was controlling the radio beacon today? Was a PIC processor?
[16:17] <jcoxon> its the Peg III beacon
[16:17] <jcoxon> yeah i guess it was apic
[16:19] <mc-> just read it on your pegasus page, it's a PIC + a radio transmitter. So rocketboy's radio worked?
[16:20] <jcoxon> rocketboy didn't launch his payload
[16:20] <jcoxon> his radio still wasn't working
[16:20] <mc-> sorry, I meant his radio receiver.
[16:20] <jcoxon> yeah
[16:21] <jcoxon> could hear the beacon for a long time
[16:21] <jcoxon> gonna probably end up in east suffolk
[16:21] <jcoxon> or hte sea
[16:21] <mc-> any plans for the next launch? I think I can get my payload working with an active antenna.
[16:21] <jcoxon> hmmmm
[16:21] <jcoxon> we are thinking about saturday
[16:22] <mc-> wow, great, that's quick. I guess the helium arrived?
[16:22] <jcoxon> yeah
[16:22] <jcoxon> rocketboy has it now
[16:22] <jcoxon> we used about half of it
[16:22] <mc-> that's alot..how come?
[16:22] <jcoxon> we over inflated the balloon
[16:23] <mc-> by mistake?
[16:23] <jcoxon> wanted a fast ascent due to the winds
[16:23] <mc-> ok
[16:23] <mc-> was it the N20 bottle?
[16:23] <jcoxon> now the party days said that if we wanted to hold on to it for a bit we'd need to call them to tell them
[16:24] <mc-> your filling attachments worked? or you used their attachments?
[16:24] <jcoxon> it was fine
[16:24] <jcoxon> i've actually got theirs
[16:24] <jcoxon> but we didn't use it
[16:24] <jcoxon> actually attached directly
[16:25] <mc-> I think they want their attachments back fairly soon.
[16:25] <jcoxon> i can pop that round easily
[16:26] <mc-> was it a N20 or a T? Could you send me the receipt pls?
[16:26] <jcoxon> N20
[16:26] <jcoxon> yeah i've got the reciept
[16:26] <jcoxon> emal me your address
[16:26] <mc-> no rush
[16:29] <jcoxon> last night Laurence and i managed to actually build another payload from my gumstix
[16:30] <jcoxon> which parsed gps and then sent it via radio by toggling a gpio high and low
[16:30] <jcoxon> it worked
[16:30] <jcoxon> but then as we were attaching it stopped
[16:30] <jcoxon> so we gave up
[16:32] <mc-> my payload was meant to do the same sort of thing...
[16:33] <mc-> just been reading the logs, saw you had someone from Masten space..
[16:33] <mc-> I was at Space Access last year.
[16:33] <jcoxon> cool
[16:35] <jcoxon> i think for sat i'm just going to make a camera module
[16:38] <mc-> Were you using the passive antenna I sent you? I think you and I both need active antennas, maybe.
[16:42] <jcoxon> no i got an active one
[16:43] <jcoxon> but i agree
[16:48] <mc-> I'm sorta glad my payload didn't work, otherwise you would have had the predicament of whether to launch just my payload.
[16:48] <jcoxon> :)
[16:48] <mc-> If that happens in future, don't bother to launch my payload.
[16:49] <mc-> It can always wait
[16:49] <jcoxon> oh we sort of work on hte idea thats its better to be able to fly another day
[16:49] <mc-> agreed
[16:49] <jcoxon> like today
[16:51] <mc-> have you worked out why your payload wasn't working today?
[16:51] <jcoxon> no
[16:51] <jcoxon> slightly to tired
[16:51] <jcoxon> and rather miss my gumstix
[16:51] <jcoxon> stupid router
[16:51] <Max00> heh
[16:52] <jcoxon> right sleep time
[16:52] <jcoxon> went to bed at 5 and got up at 8
[16:52] <Max00> was a late one
[16:52] <Max00> i got up at 10
[16:53] <Max00> would you guys recomend active or passive?
[16:53] <Max00> for a gps antenna
[16:54] <mc-> I was just recommending an active, in theory active is the same as passive.
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[17:16] <mc-> hi icez
[17:16] <icez> hi mc-
[17:16] <mc-> I saw you were talking to Masten in the logs
[17:16] <mc-> I went to Space access last year
[17:16] <mc-> but can't make this year
[17:17] <icez> is it good?
[17:17] <mc-> I guarantee you will be inspired, and want to work on rockets full time
[17:18] <mc-> but it's long days, and some presentations are rather too far fetched..IMO
[17:19] <icez> cool
[17:19] <icez> I have some far fetched ideas sometimes too :)
[17:22] <mc-> it would be great if you could video some of the presentations?
[17:22] <mc-> there was someone videoing last year, don't know if it was for sale?
[17:22] <icez> mmm
[17:23] <mc-> perhaps check with the organisers if they have a CD with all the video?
[17:23] <icez> I could think about it
[17:23] <icez> I'll have to figure out how to put the videos in a digital format though :P
[17:24] <mc-> Even a webcam would be better than nothing at all..
[17:25] <icez> do people usually bring computers with them?:)
[17:26] <icez> I could just plug in a webcam on my laptop and save it directly
[17:26] <icez> with a microphone of course
[17:28] <icez> I wonder if there are pictures from the last conferences
[17:28] <icez> just to see
[17:28] <mc-> yes, most ppl have a laptop with them, and there was free wifi..if the ppt is boring.
[17:29] <icez> yay:)
[17:29] <mc-> there's a blog from masten
[17:29] <mc-> on space access
[17:33] <icez> on their website?
[17:35] <mc-> http://masten-space.com/blog/?p=92 then look at selenianboondocks
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[17:46] <icez> mc-, what kind of stuff do you do?
[17:47] <icez> (such as work and/or hobbies)
[17:48] <mc-> GPS for work, rockets/RC for hobbies
[17:48] <mc-> bbl
[17:49] <icez> ok
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[19:03] <lovenfun> hi all
[19:04] Nick change: lovenfun -> br00k
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[19:42] <icez> wb mc-
[19:44] <mc-> hi icez
[19:45] <mc-> what are your interests? rockets?
[19:46] <icez> well, my main interest is astronomy/astrophysics ...and anything related to getting there
[19:46] <icez> so rockets yeah:)
[19:55] <mc-> which parts of rockets? Guidance/Motor/Software/Electronics?
[19:57] <icez> well, currently I've only done little kits and some small home-made ones with maximum C rockets
[19:57] <icez> no electronics whatsoever
[19:57] <icez> I actually ended up here because I had an idea of putting a rocket on a balloon:)
[19:58] <icez> but I'm pretty interested in ways of guiding rockets in outer space
[20:01] <mc-> no problem with electronics, that's the easy part for me. I struggle with the mechanical side.
[20:02] <mc-> Can you get permission to launch a balloon?
[20:03] <icez> well, I don't know
[20:03] <icez> I know one of the university here has a group that launches high-altitude balloons
[20:04] <icez> but they are 300x bigger than 'amateur' ones
[20:04] <mc-> http://www.kd7lmo.net/ansr/data/ansr_33_ground.gif
[20:04] <mc-> in Phoenix
[20:05] <mc-> must go, cya
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[21:25] <Max00> hey jcoxon
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[21:31] <jcoxon> hey Max00
[21:32] <icez> hey jcoxon
[21:33] <jcoxon> hey icez
[21:33] <icez> i'm a bit confused, when's the launch?
[21:33] <jcoxon> its been
[21:33] <jcoxon> well actually it was scrubbed
[21:33] <icez> ok:[
[21:33] <jcoxon> we did launch a balloon but it only had a radio beacon onboard
[21:34] <icez> ok
[21:34] <icez> oh well
[21:38] <jcoxon> yeah
[21:38] <jcoxon> will be able to fly again
[21:39] <icez> how did the beacon go then?:)
[21:39] <jcoxon> well rocketboy thinks it landed somewhere in suffolk
[21:39] <jcoxon> we tracked it for a good 2 hours
[21:40] <jcoxon> then stopped as we couldn't really work out where it was
[21:40] <jcoxon> however i don't think its gone out to sea
[21:41] <icez> I saw some cool stuff at a ballooning group in arizona
[21:41] <icez> they separate their payloads into packages and they literally plug and play
[21:41] <jcoxon> thats really cool
[21:42] <jcoxon> icez: you should get involved in a balloon group!
[21:42] <icez> yeah, I should
[21:42] <icez> I just have little transportation issues :]
[21:43] <icez> their website doesn't say how to join, but I guess I have to go to their meetings
[21:44] <icez> but they have balloons going across states, into mexico, and back into the US
[21:44] <icez> so cool.
[21:44] <jcoxon> oh they are more advanced then us!
[21:44] <jcoxon> but they don't have the sea nor the population density
[21:45] <icez> 104000 feets is their record
[21:45] <jcoxon> thats pretty damn good
[21:46] <icez> no pictures of their completed payloads though:(
[21:48] <jcoxon> i'll wack up some pics of today onto flickr in a sec
[21:49] <Max00> :)
[21:50] <jcoxon> not very interesting but hey
[21:51] <Max00> work 2morrow :(
[21:54] <jcoxon> i've got to start doing some work tomorrow as well
[21:54] <jcoxon> http://www.flickr.com/photos/29158271@N00/sets/72157594457653364/
[21:55] <Max00> what do you do?
[21:55] <jcoxon> i'm a medical student
[21:56] <jcoxon> though of course medicine is only a hobby
[21:56] <jcoxon> well thats what i tell myself :-D
[21:57] <icez> ohh, so you did do the radar reflector thing
[21:57] <jcoxon> yeah
[21:57] <jcoxon> but it didn't really work
[21:57] <jcoxon> there was to much tension on the rope which meant it folded up
[21:57] <Max00> << system admin
[21:58] <icez> lol
[21:58] <icez> :]
[21:58] <Max00> i get to fight with servers all day
[21:58] <Max00> :)
[21:58] <icez> I feel your pain
[21:58] <icez> :)
[21:58] <Max00> :)
[22:00] <jcoxon> right - i'm going to make a camera module
[22:01] <jcoxon> this will be my contribution to the next launch
[22:01] <jcoxon> don't think i can bring myself to do any gps for a while
[22:01] <Max00> perl?
[22:01] <icez> I wonder if I can control RC cars for miles around
[22:02] <icez> if I can't launch anything easily, I might as well roll them around:)
[22:02] <Max00> i might have a go at a wifi RC car controled via apache
[22:03] <Max00> with a webcam
[22:03] <icez> that's what I was thinking:)
[22:03] <icez> I could visit places without actually going;)
[22:03] <icez> lol
[22:03] <Max00> lol
[22:03] <Max00> google earth ;)
[22:04] <jcoxon> icez, your part of the team
[22:04] <jcoxon> you're*
[22:05] <icez> which team?
[22:05] <jcoxon> our team
[22:05] <icez> oh
[22:05] <icez> yeah :]
[22:06] <jcoxon> Max00 thanks for all the help last night
[22:07] <jcoxon> will post the code soon so everyone can laugh
[22:07] <icez> should make a meterological package for balloons :]
[22:07] <Max00> np mate i couldnt sleep
[22:07] <icez> windspeed, temperature, humidity, etc.. and you just plug it in :)
[22:07] <jcoxon> thats a nice idea
[22:07] <jcoxon> how about you just turn it on
[22:08] <jcoxon> flick one switch and then afterwards take out the mmc card with the data on it
[22:08] <icez> true.
[22:08] <icez> but then we'd need to make sure the time is the same on everything
[22:09] <jcoxon> well actually it might help to have gps
[22:09] <jcoxon> to get time and altitude
[22:09] <icez> GPS has time?
[22:09] <jcoxon> but not to be used for tracking
[22:09] <jcoxon> its based on time
[22:09] <jcoxon> its the first thing you get
[22:09] <jcoxon> only need one sat
[22:09] <icez> oh really
[22:10] <icez> and it's accurate time syncronized with other satellites and all?
[22:10] <jcoxon> i think they have atomic clocks
[22:10] <jcoxon> wikipedia will reveal all
[22:10] <icez> I need to read more about GPS:P
[22:11] <Max00> yuh me 2
[22:11] <Max00> and balloonin
[22:11] <icez> did you guys hear about some guy who made (or is making) a cannon for payloads of about 220 lbs?:)
[22:12] <jcoxon> nope
[22:12] <jcoxon> wow
[22:12] <icez> it suposedly launches them at ~50000 ft at 2000 m/s
[22:12] <icez> :P
[22:12] <Max00> cool
[22:12] <jcoxon> yeah cannons have been build before
[22:12] Action: icez looks for the url
[22:12] <jcoxon> the US had a cannon program
[22:12] <icez> http://www.dailytech.com/article.aspx?newsid=5385
[22:13] <icez> it's basically a small maglev train that runs around and then goes up
[22:14] <Max00> ah i have read that
[22:14] <icez> 10km/s
[22:14] <Max00> also seen a lazer thing as well
[22:14] <icez> oops
[22:14] <icez> my memory confused Gs with m/s ;)
[22:14] <Max00> that fires at a shape which creates heat which moved it up
[22:15] <Max00> -----> like that
[22:15] <icez> we could try that, a maser against a big foil parachute :]
[22:16] <jcoxon> right the mass flickr upload is complete
[22:16] <icez> could be a nice cutdown mechanism too..just shoot the balloon;)
[22:18] <jcoxon> hehe
[22:19] <icez> you guys are nicely organized
[22:19] <icez> the plastic on the ground, the table, the toolboxes :)
[22:19] <Max00> if i get a 12router n plug it into my car
[22:19] <Max00> will i need to conver the power at all
[22:20] <jcoxon> not sure
[22:20] <jcoxon> the router powersupplys are pretty damn good
[22:20] <jcoxon> can take from 5v to about 25v
[22:20] <jcoxon> icez: hehe
[22:20] <jcoxon> its mainly rocketboy who is organised
[22:20] <jcoxon> it was really muddy
[22:21] <icez> you guys need to move here:)
[22:21] <icez> it's always a nice day to launch;)
[22:21] <Max00> yeah i thought you guys looked organised
[22:21] <Max00> lol
[22:21] <icez> currently there's not a single spot of cloud anywhere.
[22:22] <jcoxon> just a shame we aren't organised to actually have working payloads :-p
[22:23] <icez> it'll come with experience and failures :)
[22:23] <icez> (and successes of course)
[22:24] <jcoxon> exactly
[22:24] <jcoxon> its a tough learning curve - our conditions aren't ideal for this sort of thing
[22:25] <icez> we have lots of empty space here:/
[22:25] <icez> just don't go launching near the grand canyon :)
[22:26] <jcoxon> hehe
[22:26] <jcoxon> right time for bed
[22:26] <jcoxon> good chatting to you all
[22:26] <icez> cya
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[22:52] <Max00> night
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[22:55] <rocketboy> night
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[00:00] --- Mon Jan 8 2007