highaltitude.log.20081012

[00:00] <natrium42> gordonjcp, they only had RG-6
[00:04] <jcoxon> natrium42, whats this coax for?
[00:04] <jcoxon> radio? if so you want 50ohm, tv cable etc are 75ohm
[00:04] <natrium42> for my HF antenna
[00:04] <natrium42> yeah
[00:05] <natrium42> i will probably order from ebay...
[00:05] <jcoxon> i think rg-6 is 75ohm
[00:06] <natrium42> i will most likely get RG-8
[00:07] <jcoxon> cool
[00:07] <jcoxon> right i'm off to bed - got to work tomororw :-(
[00:08] <jcoxon> night
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[00:21] <natrium42> hmm
[00:21] <natrium42> LMR-400 seems better
[00:29] <natrium42> ahaha, nice --> http://cgi.ebay.ca/33dBm-2-4GHz-2W-USB-wifi-adapter-802-11-high-power_W0QQitemZ380064243052QQihZ025QQcategoryZ44996QQcmdZViewItem
[00:30] <natrium42> 2 watt usb wifi adapter
[00:30] <natrium42> i bet that's illegal, but still cool range :P
[00:41] <SpeedEvil> Only if you have two.
[00:43] <SpeedEvil> Err - 8 miles on 2 watts with little antennas?
[00:43] Action: SpeedEvil doubts seriously.
[00:45] <SpeedEvil> 60 times the power = about 8 times the range. Call it 10 with the antennas.
[00:45] <SpeedEvil> 3Km, maybe.
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[05:13] <natrium42> ordered 50ft of LMR-400
[05:14] <natrium42> $90 :S
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[13:12] <edmoore> jcoxon: ping
[13:24] <jcoxon> hey edmoore
[13:24] <edmoore> did you get my zeusbot message?
[13:24] <jcoxon> ummm no
[13:24] <edmoore> lol. that didn't work then
[13:24] <jcoxon> did zeusbot say that the message was accepted?
[13:24] <edmoore> no
[13:24] <jcoxon> let me check it
[13:24] <jcoxon> say something
[13:25] <edmoore> hello
[13:25] <edmoore> works
[13:25] <jcoxon> hmmmm
[13:25] <jcoxon> "-zeusbot- Message for edmoore accepted"
[13:25] <edmoore> say something
[13:25] <jcoxon> so do '/msg zeusbot !msg jcoxon
[13:26] <jcoxon> so do '/msg zeusbot !msg jcoxon TEST'
[13:26] <jcoxon> sorry
[13:26] <edmoore> just did
[13:26] <jcoxon> get an accepted?
[13:26] <edmoore> nope
[13:26] <jcoxon> !messaging
[13:26] <jcoxon> bbian
[13:26] <jcoxon> bbiab - sorry
[13:35] <jcoxon> back
[13:35] <jcoxon> sorry am playing halo
[13:36] <jcoxon> edmoore, could you try again with the message thing
[13:36] <jcoxon> !msg edmoore TEST
[13:37] <edmoore> ok
[13:38] <edmoore> no luck
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[13:49] <Laurenceb> hi
[13:57] <Laurenceb> hehe looks good
[13:57] <jcoxon> it wasn't working earlier
[13:57] <Laurenceb> so zeusbot stores messages for people?
[13:57] <jcoxon> but should do now
[13:57] <jcoxon> yeah
[13:57] <jcoxon> e.g.
[13:58] <jcoxon> now when you say something or login in...
[13:58] <Laurenceb> blah
[13:58] <jcoxon> did it work?
[13:58] <Laurenceb> yep
[13:58] <Laurenceb> :P
[13:58] <jcoxon> also
[13:58] <jcoxon> so
[13:59] <jcoxon> bbiab
[14:04] <SpeedEvil> Yogic flying?
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[14:17] <rharrison> afternnon all
[14:18] <SpeedEvil> Hello!
[14:18] <rharrison> Is the wind as bad as the wyoming tracker thinks it is?
[14:18] <rharrison> Nice day for a launch up here
[14:18] <SpeedEvil> Not windy here (Fife, Scotland0
[14:33] <jcoxon> rharrison, yeah its bad
[14:33] <jcoxon> at 300mb its pretty fast
[14:33] <jcoxon> up to 50 knots
[14:34] <jcoxon> actually its not that bad
[14:34] <jcoxon> but the further north you are the fast the 'stream
[14:49] Nick change: EI5GTB__ -> EI5GTB
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[15:09] <rharrison> jcoxon how are you doing at the moment with pegasus
[15:10] <rharrison> Are you up for a launch next w/e povided the weather is behaving?
[15:12] <rharrison> BTW I sat a dumy version of the Foundation at the radio club yesterday an only got 3 questions wrong. So they have put me in for the exam without having to do the course!!!
[15:12] <rharrison> I'm going to do the intermediate next
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[15:53] <gordonjcp> rharrison: hah
[15:53] <gordonjcp> which ones did you get wrong, and do you know how to get them right now?
[16:21] <jcoxon> he rharrison
[16:22] <jcoxon> hey *
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[17:17] <Laurenceb> hi ed
[17:18] <Laurenceb> I've just finished off the v2 radio board, all seems to work ok - I put a bootloader on it
[17:19] <Laurenceb> theoretically on the aerosol hab you should be able to upload new firmware over ssh
[17:20] <EI5GTB> radio board?
[17:21] <Laurenceb> http://wiki.ukhas.org.uk/_detail/projects:imgp0103.jpg?id=projects%3Aparafoil_avr&cache=cache
[17:24] <EI5GTB> sexy! what dfoes it fo?
[17:24] <EI5GTB> do*
[17:24] <Laurenceb> its a modem basically
[17:25] <Laurenceb> uses an atmega168
[17:25] <Laurenceb> (not soldered in yet on that photo)
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[17:30] <EI5GTB> nice
[17:30] <EI5GTB> man, makes me wanna start learning tha avr chips again
[17:31] <EI5GTB> just so hard to learn from scratch!
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[17:43] <Laurenceb> bbl
[17:43] <SpeedEvil> Laurenceb: ping
[17:44] <SpeedEvil> Laurenceb: anyway - look on page 7 of that datasheet you linked to earlier for the SMPS
[17:44] <SpeedEvil> Laurenceb: it addresses the case of if you dont' powe rthe output
[17:44] <SpeedEvil> input
[17:45] <SpeedEvil> parasitic diode notes and ratings
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[18:50] <jcoxon> ping rharrison
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[19:09] <jcoxon> hey edmoore
[19:09] <edmoore> yo
[19:09] <edmoore> flying visit, I regret
[19:09] <jcoxon> oh okay
[19:09] <jcoxon> i think i fixed messages
[19:09] <jcoxon> you don't need to message zeusbot
[19:09] <jcoxon> instead:
[19:09] <edmoore> .
[19:10] <jcoxon> ?
[19:10] <edmoore> I have one thing to say to you jcoxon, and that is...
[19:10] <edmoore> (say something)
[19:10] <jcoxon> f
[19:11] <jcoxon> ooo it works
[19:11] <edmoore> nice
[19:11] <jcoxon> now i need to check that it works when you logon
[19:11] <edmoore> anyway, I need to return to me flying
[19:11] <edmoore> I will bbl
[19:11] <jcoxon> cya
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[19:12] <jcoxon> hi
[19:12] <jcoxon> edmoore, it works on logging in
[19:15] <natrium42> hi
[19:16] <jcoxon> hey natrium42
[19:25] <edmoore> natrium42: have to go in 1 min but... how was google?
[19:25] <natrium42> it was pretty good
[19:25] <natrium42> i think
[19:25] <natrium42> should go online within a few weeks
[19:26] <natrium42> i mentioned this channel at the end
[19:26] <natrium42> hopefully it won't be cut :)
[19:26] <jcoxon> hehe
[19:26] <edmoore> :)
[19:26] <edmoore> awesome
[19:26] <edmoore> right bbl
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[19:26] <natrium42> also CU spaceflight
[19:31] <SpeedEvil> Hot blonde blowjob! http://www.youtube.com/watch?v=CSDhpwx0KN8
[19:31] <SpeedEvil> oops - mischan. (though worksafe)
[19:31] <jcoxon> oh SpeedEvil
[19:31] <jcoxon> hehe
[19:46] <SpeedEvil> I want to learn that (scientific glassblowing)
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[20:02] <Laurenceb> hello
[20:02] <SpeedEvil> Lo.
[20:02] <SpeedEvil> get earlier message?
[20:04] <Laurenceb> yeah
[20:04] <Laurenceb> I lost the link to the datasheet
[20:05] <Laurenceb> got it?
[20:05] <Hiena> Muahahaha... Now i have too much VHF output power...
[20:05] <SpeedEvil> No. However from memory, there is a diode from output to input, and you can't put more than 5mA through it.
[20:05] <SpeedEvil> Or was it 50mA
[20:06] <Laurenceb> I'll take a look on the farnell site
[20:07] <Laurenceb> 113-2756 is the part no
[20:08] <Laurenceb> ah yes 5ma, thanks
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[20:14] <Laurenceb> is there a standard current for rating zener diodes?
[20:14] <SpeedEvil> The number on the tin.
[20:14] <Laurenceb> i.e. is a 3.3v zener 3.3v at x ma of current
[20:14] <SpeedEvil> a 1W 5.1V diode will dissipate 1W at 5.1V
[20:14] <SpeedEvil> The curve is alas not very sharp.
[20:15] <Laurenceb> I mean the voltage drop is a function of I
[20:15] <SpeedEvil> yes - wattage/voltage
[20:16] <SpeedEvil> So 190mA or so for a 5.2V 1W diode
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[21:33] <Laurenceb> ok... datasheet says 5ma test current
[21:33] <Laurenceb> I have 3.3v -- 1K --- zener --- gnd and get 2.7v, which is acceptable
[21:36] <SpeedEvil> The datasheet should have a graph
[21:37] <Laurenceb> no such luck :(
[21:40] <SpeedEvil> Look for other diodes, they shoild have graphs
[21:40] <Laurenceb> yeah
[21:46] <roberto> gute Nacht - penn jut / Good night - sleep well :-)
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[22:01] <Laurenceb> how do I printf a degree sign?
[22:02] <SpeedEvil> depedns on the charset
[22:02] <SpeedEvil> copy and paste
[22:06] <Laurenceb> hmm ok how do I printf a constant ascii character without defining it?
[22:07] <Laurenceb> is there some sort of html style syntax?
[22:07] <SpeedEvil> printf("\x45")
[22:07] <SpeedEvil> or is it that
[22:08] <SpeedEvil> printf("%x45")
[22:08] <SpeedEvil> prints hex 45
[22:08] <Laurenceb> yes
[22:08] <Laurenceb> but anyway
[22:09] <Laurenceb> so I can use the normal datatype syntax, just with the data afterwards?
[22:09] <Laurenceb> wont tha by parsed as %x then "45" ?
[22:10] <Laurenceb> i.e. look for some hex argument and output "45" ?
[22:10] <SpeedEvil> yes - foo="\0x45"; printf("%s",foo); IIRC
[22:10] <SpeedEvil> will output char 45 too
[22:10] <Laurenceb> sure
[22:10] <SpeedEvil> (foo will need to be a char *)
[22:10] <Laurenceb> but I want to avoid that
[22:10] <SpeedEvil> Sorry - what are you trying to do?
[22:11] <Laurenceb> and do it all with the argument string that printf takes
[22:11] <Laurenceb> like in html
[22:11] <Laurenceb> where you can insert ascii character codes
[22:12] <SpeedEvil> There are several ways.
[22:12] <Laurenceb> so printf("Hello world"); would be done using character codes instead of the actual characters inside the parenthises
[22:13] <SpeedEvil> printf("%x20%c%s%s",32," ","\0x20") will print four spaces
[22:15] <SpeedEvil> Or not.
[22:16] <Laurenceb> %x20 is wrong?
[22:16] <Laurenceb> at the start, does that work/
[22:19] <SpeedEvil> yes, no, it's wrong
[22:19] <SpeedEvil> I was tired, and looked at man printf, whihc of course mislead me
[22:19] <SpeedEvil> \x20
[22:19] <SpeedEvil> that's not actually printf interpreting it though
[22:19] <SpeedEvil> that's the normal string literal interpretation at compile-time
[22:20] <SpeedEvil> When the compiler looks at a string, and converts any \n, ... into literal returns or whatever
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[22:25] <Laurenceb> ah so \x20 becomes ascii char 20 at compile time?
[22:25] <SpeedEvil> hex 20
[22:25] <SpeedEvil> dec 32
[22:25] <SpeedEvil> space
[22:25] <SpeedEvil> you can also use octal - \222
[22:27] <SpeedEvil> Or decimal - \032
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[00:00] --- Mon Oct 13 2008