highaltitude.log.20080809

[00:07] <Laurenceb> hi all
[00:07] <Laurenceb> soneil: lassen widget?
[00:08] <soneil> the lassen iq gps module
[00:08] <Laurenceb> ah
[00:08] <Laurenceb> I've been playing with one as well :D
[00:09] <Laurenceb> what are you connecting it to?
[00:09] <soneil> most likely arduino to start with, since I have a handful spare
[00:11] <Laurenceb> soneil: theres some AVR code here http://wiki.ukhas.org.uk/code:interrupt_driven_tsip
[00:18] <Laurenceb> can anyone tell me how zeners behave at low temperature?
[00:19] <Laurenceb> arggg whats wrong with this country?! http://www.idhee.org.uk/ExceptionsGuide.pdf
[00:20] <Laurenceb> why does the office of the deputy prime minister tell me how to install a boiler? Its like communism
[00:21] <soneil> why's my hot shower in the morning not important enough for the real prime minister?
[00:22] <Laurenceb> hehe the point I was making is that its all very well the government giving advice, but when they tell you how your house must be constructed its gone beyond the limit
[00:24] <SpeedEvil> Some sorts of boiler are very dangerous.
[00:25] <SpeedEvil> And if misinstalled can kill large numbers of people when they explode.
[00:25] <Laurenceb> true
[00:26] <SpeedEvil> And legionares disease.
[00:26] <Laurenceb> but this isnt a hospital or block of flats
[00:26] <SpeedEvil> And the government has an interest in reducing fuel usage.
[00:26] <SpeedEvil> So that it helps the economy by not having to import oil.
[00:27] Action: Laurenceb packs up and moves to a deserted island
[00:34] <Laurenceb> interesting - http://news.bbc.co.uk/1/hi/sci/tech/7547504.stm
[00:39] <Laurenceb> that image looks pretty cool
[00:45] <SpeedEvil> yeah
[00:46] <Laurenceb> so... can anyone tell me about zeners?
[00:47] <SpeedEvil> They are a normal diode, with a twist.
[00:47] <SpeedEvil> In that their reverse breakdown is specified.
[00:47] <Laurenceb> sure... but in particular the temperature characteristics?
[00:48] <SpeedEvil> Tehre is something odd with that.
[00:48] <SpeedEvil> IIRC 0-5.6V have a negative, 5.6-... have a positive
[00:48] <SpeedEvil> 5.6 has zeroish
[00:48] <SpeedEvil> (where 5.6 may vary, I'm not sure of the real value)
[00:49] <Laurenceb> so if I have a 2.6v ?
[00:49] <SpeedEvil> better references are cheap
[00:49] <Laurenceb> I'm just making a level convertor
[00:49] <SpeedEvil> essentially zero IIRC
[00:49] <Laurenceb> but it may be down at -50c
[00:49] <SpeedEvil> under 10% shift
[00:50] <SpeedEvil> look at hte sheet for any 2.6V silicon zerner.
[00:50] <SpeedEvil> tghey will always be similar.
[00:50] <Laurenceb> ok thanx
[00:51] <Laurenceb> so -ive temperature coefficient means voltage up or down as t decreases?
[00:55] <SpeedEvil> -10uV/C * 10C = -100uV
[00:55] <Laurenceb> thats typical?
[00:55] <Laurenceb> ie 10uV/C ?
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[00:59] <Laurenceb> hi fergus
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[01:06] <fergusnoble_> hello
[01:07] <SpeedEvil> I seem to remember so - but it's been a while since I checked.
[01:07] <SpeedEvil> Just look at any 2.6V zener datasheet
[01:07] <SpeedEvil> silicon
[01:11] <akawaka> http://www.sanguino.cc/
[01:14] <akawaka> atmel need a better site
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[01:21] <SpeedEvil> Laurenceb: got a copy of AoE?
[01:21] <Laurenceb> AoE ?
[01:22] <SpeedEvil> Art of electronics
[01:22] <Laurenceb> ah that book :P
[01:22] <fergusnoble_> horowitz and hill
[01:23] <Laurenceb> I'm always hearing about it, will have to buy myself a copy
[01:23] <Laurenceb> I did have a copy from the uni library but its gone back now
[01:24] <SpeedEvil> http://books.google.co.uk/books?id=bkOMDgwFA28C&pg=PA332&lpg=PA332&dq=%22zener+diode%22+graph+%22temperature+coefficient%22&source=web&ots=F29nRG7_Pt&sig=8JdfkVTH0onrZCgmGE_alCdcc9I&hl=en&sa=X&oi=book_result&resnum=7&ct=resulthttp://books.google.co.uk/books?id=bkOMDgwFA28C&pg=PA332&lpg=PA332&dq=%22zener+diode%22+graph+%22temperature+coefficient%22&source=web&ots=F29nRG7_Pt&sig=8JdfkVTH0onrZCgmGE_alCdcc9I&hl=en&sa=X&oi=book_result&resnum=7&c
[01:24] <SpeedEvil> http://books.google.co.uk/books?id=bkOMDgwFA28C&pg=PA332&lpg=PA332&dq=%22zener+diode%22+graph+%22temperature+coefficient%22&source=web&ots=F29nRG7_Pt&sig=8JdfkVTH0onrZCgmGE_alCdcc9I&hl=en&sa=X&oi=book_result&resnum=7&ct=result
[01:24] <SpeedEvil> I mean
[01:24] <Laurenceb> arg long urls :D
[01:28] <Laurenceb> thanx
[01:28] <Laurenceb> well its a late night, cya folks
[01:28] <SpeedEvil> Night.
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[07:34] <robert1971> morning all
[07:34] <robert1971> Only the hardcore on at 7:30 am
[07:34] <robert1971> :)
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[09:04] <jcoxon> morning edmoore
[09:05] <edmoore> yo
[09:05] <jcoxon> got my little box up and running :-p
[09:07] <robert1971> the 386
[09:07] <jcoxon> yeah
[09:08] <robert1971> Have u put linux on it?
[09:08] <jcoxon> also the flight forecast for today are just landing on land, hehe
[09:08] <jcoxon> yup
[09:08] <Shanuson> moin moin
[09:08] <robert1971> nice
[09:09] <jcoxon> robert1971, hehe its an old project
[09:09] <jcoxon> i actually put a distro together for it
[09:09] <robert1971> jcoxon I'm going to write a sort bit on the wiki about avr programmers. I'll move it to freaks when done if that's ok
[09:09] <jcoxon> np
[09:10] <jcoxon> i was thinking perhaps of sub catgorising the guides as we've got quite a few
[09:10] <robert1971> It will be about 2 viretual pages of a4 and cover the basics for a newbie. The sort of documentation I needed
[09:10] <robert1971> virtual even
[09:11] <jcoxon> cool
[09:12] <robert1971> Good Idea to sub cat. Do you want me to do it or can I leave it to you
[09:12] <jcoxon> feel free to do it
[09:15] <robert1971> bbl wife and kids away from 12 24hr to play with avr
[09:15] <jcoxon> hehe, have fun
[09:17] <edmoore> jcoxon: 25mhz?
[09:22] <jcoxon> yeah
[09:22] <jcoxon> though it is from 1992
[09:23] <jcoxon> 3.91 bogomips
[09:24] <edmoore> the badger board is 60mhz 32-bit
[09:24] <jcoxon> hehe
[09:24] <jcoxon> well it runs linux pretty well
[09:24] <edmoore> maybe we should put linux on badger
[09:25] <jcoxon> i though there was a reason you couldn't
[09:25] <edmoore> 2
[09:25] <edmoore> 1: non MAM, though uCLinux was created secifically the deal with that
[09:25] <edmoore> 2: Not enough rom or ram, and no memory interfaces buses to cope
[09:26] <jcoxon> that was it
[09:26] <edmoore> on larger chips you have the 32bit buses that allow you to stick, well, 2gigs of ram on if you wanted
[09:26] <edmoore> but we have to built the 1.2 now anyway :)
[09:27] <jcoxon> i'm just about to upgrade to the lastest uclibc
[09:27] <edmoore> and it's going to have 3axis gyro and accelerometer, I decided without fergus yesterday, as that data is required by certain nudge-nudge-wink-wink-how's-ya-father
[09:27] <jcoxon> have a checky way of doing this using the uclibc image toolchains
[09:30] <edmoore> oh?
[09:30] <jcoxon> crap need to restart
[09:30] <jcoxon> bbiab
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[09:34] <edmoore> hi jcoxon
[09:34] <jcoxon> hey sorry about that
[09:35] <jcoxon> basically uclibc make a mountable image with a whole uclibc dev environment inside
[09:35] <jcoxon> just need to strip it down
[09:56] <gordonjcp> morning
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[11:40] <edmoore> ayeup
[11:40] <edmoore> sorry I left abruptly jcoxon, unplugged network cable then spontaneously decided to come home
[11:40] <edmoore> were I am now
[11:44] <gordonjcp> heh
[12:12] <jcoxon> edmoore, no worries!
[12:26] <gordonjcp> time to build my v2.0 handi-tenna
[12:27] <gordonjcp> i've discovered that brass welding rod is a hell of a lot easier to work when you heat it on the camping stove
[12:28] <gordonjcp> if anyone else wants one made, let me know
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[13:00] <jatkins> hi all
[13:01] <jcoxon> hey jatkins
[13:01] <jatkins> ..just wondering about sd card read/write with an arduino
[13:01] <jatkins> found this http://www.sparkfun.com/commerce/product_info.php?products_id=752
[13:01] <jatkins> I know I could do it directly to the card without this board via spi
[13:01] <jatkins> but I think the coding for that is much lower level
[13:02] <jcoxon> there a defintiely libs for the arduino which would make hte low end coding easier
[13:02] <jatkins> oh cool
[13:02] <jatkins> oh
[13:02] <jatkins> the arduino website's down
[13:03] <jatkins> oh wait, it's not
[13:03] <jatkins> http://www.arduino.cc/en/Reference/Libraries
[13:03] <jatkins> is the wire one what I'd need?
[13:04] <jcoxon> http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1141913197/3
[13:04] <jatkins> thanks
[13:04] <jatkins> I think they moved the forum over to some new software or something, a lot of the links I tried were broken
[13:06] <jatkins> I guess it would be the SPI Interface driver and FAT16 libs I'd need?
[13:06] <jcoxon> good point
[13:06] <jcoxon> pretty much yeah
[13:08] <jatkins> sweet
[13:08] <jatkins> they have an mmc.c lib
[13:08] <jatkins> which does sd too
[13:08] <jcoxon> oh sd cards are mmc cards but a little bit more
[13:08] <jatkins> yeah
[13:08] <jcoxon> actually mmc are easier to work with
[13:09] <jatkins> they're basically discontinued now though aren't they?
[13:12] <jcoxon> probably
[13:13] Action: jcoxon begins to compile telnetd
[13:13] <jcoxon> back in a couple of hours :-p
[13:13] <jatkins> cya
[13:13] <jatkins> thanks
[13:15] <jatkins> bbl
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[13:48] Action: gordonjcp has come to the conclusion that the "weird qrm" when trying to receive satellites is actually the AFSK signal he's looking for
[13:49] <gordonjcp> the reason there seems to be something there quite often is because the passes are frequent
[13:49] <gordonjcp> and the reason it seems to be everywhere is because contrary to what i thought, they're *damn loud*
[13:56] <robert1971> compiling binutils on asus ... Yawn
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[14:26] <jcoxon> robert1971, compiling telnetd on a 386 25Mhz, yawn
[14:29] <gordonjcp> has anyone got an audio recording of the telemetry signal from one of the balloons?
[14:30] <jcoxon> gordonjcp, i don't think so
[14:30] <jcoxon> i don't remember ever recording
[14:30] <jcoxon> why?
[14:33] <gordonjcp> just wondered
[14:33] <gordonjcp> I wanted to try some decoding software
[14:33] <gordonjcp> it's afsk 1200 baud, isn't it?
[14:35] <jcoxon> ummmm depends on the payload really
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[14:38] <jcoxon> i could record some telemetry from goliath sometime
[14:42] <gordonjcp> cool
[14:42] <gordonjcp> what's that sending?
[14:43] <jcoxon> at the moment packet and sstv
[14:43] <jcoxon> but i'm going to add a bit of morse as well me thinks just for range
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[15:02] <jatkins> hi all
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[16:53] <edmoore> hi EI5GTB
[16:54] <edmoore> EI5GTB_ even
[16:55] Nick change: edmoore -> std
[16:55] Nick change: std -> edmoorew
[16:55] Nick change: edmoorew -> edmoore
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[18:06] <robert1971> Quick question im trying to _delay_ms(13000) and I only seem to get 6 seconds no matter what value I set above 6000 any ideas? Am I overflowing the counter?
[18:07] <edmoore> 6000 shouldn't overflow anything...
[18:07] <edmoore> it's not a binary number
[18:07] <edmoore> do you know how _delay_ms is implimented?
[18:08] <edmoore> also, #avr is a much better place to ask this sort of question - it's the irc channel for avrfreaks so very helpful.
[18:08] <SpeedEvil> _delay_ms(4000)... ?
[18:09] <SpeedEvil> It'll be something like clock rate /clockdiv exceeding a threshold.
[18:10] <robert1971> I do now
[18:10] <robert1971> When the user request delay which exceed the maximum possible one,
[18:10] <robert1971> _delay_ms() provides a decreased resolution functionality. In this
[18:10] <robert1971> mode _delay_ms() will work with a resolution of 1/10 ms, providing
[18:10] <robert1971> delays up to 6.5535 seconds (independent from CPU frequency). The
[18:10] <robert1971> user will not be informed about decreased resolution.
[18:11] <robert1971> I guess 6.5535 seconds is my limit
[18:12] <robert1971> Do you concur?
[18:13] <SpeedEvil> Sounds like
[18:13] <SpeedEvil> Either reimplement it, or do the obvious.
[18:15] <robert1971> I did the obvious _delay_ms(6000);_delay_ms(4000); :)
[18:16] <robert1971> It's a bit crap only limiting to 6 seconds. 30 seconds more thought would have given a greater range :( Hey Ho!!!
[18:16] <robert1971> Probably bad to have delays this long but fine for a test i would hope
[18:18] <robert1971> Now it's time to play with the PWM and get the servo working !!!!
[18:19] <edmoore> well delay_ms isn't really (I know I rabbit on about this) the "right" way of doing things, so you can't expect too much from it.
[18:21] <edmoore> good luck with the servos - that's why I love embedded, when the code actually makes stuff move, and it becomes part of the real world.
[18:26] <Ei5GTB_> hai edmoore
[18:26] <edmoore> yo
[18:30] <Ei5GTB_> wazzup?
[18:31] <edmoore> not much - about to head back to ox
[18:31] <SpeedEvil> Oh - on servos and AVR
[18:31] <edmoore> you?
[18:31] <SpeedEvil> the little ones - at least newer ones - have _horrible_ jitter on the internal oscillator.
[18:32] <SpeedEvil> Which will make your servos jitter.
[18:32] <SpeedEvil> They 'optimised' the internal oscillator.
[18:32] <edmoore> interesting
[18:32] <edmoore> i'd better test out something i was planning then before making a pcb
[18:33] <SpeedEvil> I don't happen to remember the exact part numbers - ask inflex over on ##electronics
[18:33] <edmoore> right, time to head.bbl
[18:33] <Ei5GTB_> bugger all, just back from takin a few pics in town, and getting pics printed and...gah...im sick looking at photos :p
[18:33] <SpeedEvil> He got bitten - he's small scale producing servo thignys
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[18:34] <SpeedEvil> http://nqrc.com/
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[18:56] <gordonjcp> Ei5GTB_: you've worked some satellites, haven't you?
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[19:06] <robert1971> Ok i'm being a bit thick here. I have servo externally powered by 6volt supply
[19:07] <robert1971> I want to send pwm siganals from the atmega to the servo
[19:07] <robert1971> I have (I think ) got PWM working on PIND5
[19:07] <SpeedEvil> Do you have a scope?
[19:08] <robert1971> Now do I need to connect ground on the atmega to the servo?
[19:08] <SpeedEvil> yes
[19:08] <robert1971> No Whish I did
[19:08] <robert1971> wish even
[19:08] <SpeedEvil> google xoscope
[19:09] <SpeedEvil> 7you can use a soundcard as a bad scope
[19:09] <robert1971> Ok od I should have + - from power connected to servo
[19:09] <robert1971> I then coonect muy atmega's gound to the - and the pin to the control line?
[19:09] <SpeedEvil> yes
[19:10] <SpeedEvil> you should be able to see the variation in pulse-width,
[19:10] <SpeedEvil> if you use a LED+ appropriate resistor
[19:10] <robert1971> It dosent matter haveing the negative connected to two grounds
[19:10] <robert1971> Last check :)
[19:10] <SpeedEvil> no
[19:10] <robert1971> Ok I'm doing it now !
[19:10] <SpeedEvil> A 500 ohm or so resistor in series with the servo wire might be an idea.
[19:11] <robert1971> The control wire?
[19:11] <SpeedEvil> yes
[19:11] <robert1971> Reaching for resistor
[19:12] <robert1971> I have 390 or 700
[19:12] <SpeedEvil> either
[19:14] <robert1971> @@uck me it works.
[19:14] <robert1971> Nice one SpeedEvil
[19:15] <SpeedEvil> :)
[19:15] <SpeedEvil> what you doiung with it?
[19:15] <robert1971> I put that resistor to prevent a voltage spike back to my chip
[19:16] <SpeedEvil> I mean - the servo+avr
[19:16] <robert1971> Conrolling a camera for my balloon
[19:16] <robert1971> Sorry that was a question
[19:16] <robert1971> Is that why you put the resisitor in
[19:16] <SpeedEvil> yes
[19:17] <SpeedEvil> Otherwise if something shorts, bad stuff might happen.
[19:17] <robert1971> Dose the resistor affect the signal?
[19:18] <robert1971> I need a scope ... here I come ebay
[19:41] <SpeedEvil> not in ways that are important to the servo.
[19:41] <SpeedEvil> There are alternatives to ebay.
[19:42] <SpeedEvil> http://www.home.agilent.com/agilent/product.jspx?nid=-34750.0.00&cc=US&lc=eng
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[19:54] <robert1971> That scope looks very pretty. What is the price like?
[19:55] <SpeedEvil> 4K IIRC
[19:55] Action: SpeedEvil wishes.
[19:55] <SpeedEvil> That's a 'mid-range' one too :)
[19:55] <robert1971> Ooh
[19:55] <robert1971> I'm oing back to ebay
[19:56] <robert1971> I think I may like one for a 100 quid or so
[19:56] <Hiena> Groan.... Yet another wasted day...
[19:57] <robert1971> Why is that Hiena?
[19:58] <Hiena> It's impossible to get a decent output, from the modulator. I measure 3mV at the open output. I tried to build a three stage PA for it, but i can't adjust it.
[19:58] <Hiena> My 10 Mhz scope is dead, and i have no slightest idea about the output level.
[19:59] <Hiena> Also, my RF probe saturate at the 700mV.
[19:59] <robert1971> Sounds bad
[20:01] <Hiena> Yeah. I tried to find a decent PA schematic, but all of them need to adjust. Also, i'm out of the video OpAmp, so i can't build a coilless three stage PA...
[20:30] <SpeedEvil> You don't really want to do that.
[20:30] <SpeedEvil> The modulator will be very noisy
[20:31] <SpeedEvil> and you'll lose lots and lots of power in random harmonics typically.
[20:31] <SpeedEvil> Not to mention design being fun.
[20:32] <Hiena> Yup. I guess, i'll dig up some UHF transistor and build a double stage transmitter.
[20:33] <Hiena> I'll just use a one kind of hell output stage and modulator.
[20:35] <SpeedEvil> You're trying to broadcast video on VHF?
[21:06] <Hiena> That is the plan.
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[21:11] <SpeedEvil> edmoore: http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&p=429171#429171
[21:11] <SpeedEvil> edmoore: the jitter is per-cycle, so it adds up, it does not cancel at long periods
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[22:33] <jcoxon> evening al
[22:33] <jcoxon> l
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[22:39] <SpeedEvil> hi jc.
[22:39] <SpeedEvil> and l.
[22:40] <jcoxon> hey SpeedEvil
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[22:42] <jiffe88> hmm, I hook up my yaesu vx150 to the line in on my sound card and the thing starts transmitting
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[22:45] <Laurenceb> hi speed
[22:48] <Laurenceb> whats the best way to monitor current consumption by a servo?
[22:48] <jiffe88> if I position the stereo connector just right it seems to work
[22:49] <jcoxon> jiffe88, i think there is a way to engage the radio using the line in
[22:49] <jcoxon> perhaps thats turned on
[22:50] <Laurenceb> this? http://www.farnell.com/datasheets/75744.pdf
[23:02] <jcoxon> glad we didn't launch today
[23:02] <jcoxon> the weather has been awful
[23:04] <robert1971> No shit... My green house almost took off
[23:05] <robert1971> I should have done a wyoming output it would have been in the sea
[23:06] <jcoxon> hehe
[23:06] <jcoxon> also its given me more time to get this payload working properly
[23:07] <jcoxon> found another webcam that might be better then the tescos ?5 version
[23:07] <robert1971> BTW if anyone is board and they want to see where i'm up to with my ballooning project then have a quicj glance on http://www.vimeo.com/1498781 excuse the audio, my mum wanted some explaination as she complained about the last video being silent.
[23:07] <jcoxon> robert1971, you know i said i was compiling telnetd earlier
[23:08] <robert1971> Yep is it still going?
[23:08] <jcoxon> haven't finished configure yet :-p
[23:08] <robert1971> My goodness
[23:08] <robert1971> How old is that machine
[23:09] <jcoxon> but its the first time its run so i reckon its cache a lot of stuff
[23:09] <jcoxon> oh the bios says 1992
[23:09] <robert1971> I have an old copy of redhat version 4.3
[23:09] <jcoxon> hehe
[23:09] <jcoxon> smalllinux works great
[23:09] <jcoxon> also have nearly got the 2.6 kernel working :-p
[23:09] <jcoxon> as there are some nice patches to make hte kernel smaller and lighter
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[23:10] <robert1971> God know what kernel is on redhat 4.3
[23:10] <jcoxon> i'm running 2.4.22 right now
[23:10] <jcoxon> uclibc
[23:10] <robert1971> Nice
[23:10] <jcoxon> dd'd the lastest toolchain to a partition - hence why i've got gcc
[23:11] <robert1971> I like it
[23:11] <robert1971> I have just configures my asus for avr dev as I'm off cycling arounf holland for a week.
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[23:12] <jcoxon> ooo cool
[23:12] <akawaka> jcoxon: no launch this weekend?
[23:12] <jcoxon> akawaka, nope - the weather is terrible
[23:13] <jcoxon> all the forecasts were sea landings
[23:13] <jcoxon> and its been raining all day - not great weather to be outside in
[23:13] <jcoxon> postponed for 2 weeks
[23:13] <akawaka> not so bad
[23:14] <akawaka> gives you a chance to get better prepared
[23:14] <robert1971> Got the servo working today on the atmega and the camera takes pitures and video after moving. Going to do a teathered launch in the next couple of weeks to test camera settings and wind effects
[23:14] <jcoxon> akawaka, yeah
[23:14] <jcoxon> robert1971, sounds good
[23:14] <jcoxon> tethered launching is good practice for filling balloons
[23:15] <robert1971> I see there's a guide on that on the wiki. It seems harder than I would have anticipated
[23:15] <jcoxon> hehe, its not too bad
[23:15] <jcoxon> need more then one persomn
[23:15] <jcoxon> person*
[23:15] <robert1971> I'll drag the wife out... :)
[23:16] <jcoxon> you are very welcome at the next launch - if you wanna help out
[23:16] <robert1971> I'll make her a cup of tea first. Would love to come and have a look. See whats involved and pick up a few tips
[23:16] <jcoxon> :-)
[23:17] <robert1971> Kinda nice to put some people behind the names on here
[23:17] <jcoxon> also it might be easier for you to launch under the UKHAS permission for launching at EARS then getting your own
[23:17] <robert1971> I guess edmoore will be there
[23:17] <jcoxon> he never misses a launch
[23:18] <jcoxon> the launch team us usually myself, rocketboy, edmoore and fergusnoble
[23:18] <robert1971> You guys all know each other I'm guessing. From uni?
[23:18] <jcoxon> we all meet through ballooning
[23:18] <jcoxon> however 3 of us did go to the same uni
[23:18] <robert1971> Tops, small world. Is that via the wiki
[23:19] <jcoxon> ummmm, its quite complicated
[23:19] <robert1971> I'll save it for when we meet up
[23:19] <jcoxon> hehe
[23:19] <jcoxon> after my first launch cambridge uni engineering wanted to do something similar
[23:19] <robert1971> I'm sure is going to be a bit of waiting on the ground
[23:20] <robert1971> sure > there <
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[23:20] <jcoxon> rocketboy found out through reading the NOTAMs
[23:20] <robert1971> Talk of the devil
[23:20] <jcoxon> as he's involved in rockets
[23:20] <jcoxon> edmoore from hackaday then being at cambridge
[23:20] <jcoxon> fergus from cambridge
[23:20] <robert1971> The're bit to adventurouse 4 me
[23:21] <jcoxon> hehe
[23:21] <jcoxon> phatmonkey, was here from the beginning with me
[23:21] <jcoxon> even though he's never launched :-p
[23:21] <jcoxon> evening RocketBoy
[23:21] <RocketBoy> hi all
[23:22] <jcoxon> glad we didn't launch :-p
[23:22] <jcoxon> ?
[23:22] <jcoxon> ignore the '?'
[23:22] <RocketBoy> I guess - I havn't looked at the jetstream
[23:23] <robert1971> Nice little group. I ended up her after buying an RC copter and thinking I could put a camera on this. Then thinking a balloon would be better as more stable. Then wondered what would happen if I let go. Then googled it and found natrum42 he pointed me to UKHAS and you invited me here ...
[23:23] <RocketBoy> but the ground wx has been bad here
[23:23] <robert1971> her = here
[23:23] <jcoxon> natrium42's site gets loads of hits
[23:24] <jcoxon> but yeah the community has grown, especially recently
[23:25] <robert1971> I must say I cant wait to get my first few pics back from a tethered launch.
[23:25] <jcoxon> :-)
[23:26] <robert1971> I have been given a budgt of 2k all in and I'm going to have to pull out some fantastic pics if i want to do any more after the first few flights
[23:26] <jcoxon> haha
[23:26] <jcoxon> at least you have a budget
[23:27] <robert1971> I'm not keeping very good tabs on it. I now have 4 working programmers...
[23:28] <robert1971> Thats why I'm doing a wiki on the gotchas for newbie programmers
[23:28] <jcoxon> an excellent idea
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[23:42] <robert1971> It's getting late and there is a whole load of stuff I need to do before going on holiday tomorrow. Will be online during the next week or so. Working on the wiki etc...
[23:42] <robert1971> TTFN
[23:42] <jcoxon> haha configure has finished
[23:43] <robert1971> You best leave it to compile over night
[23:43] <robert1971> It might be done in time for the launch
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[23:52] <Laurenceb> robert, 2k budget?
[23:52] <Laurenceb> oh hes gone
[23:53] <phatmonkey> jcoxon: some day I'll launch!
[23:53] <Laurenceb> was going to say thats erm... quite a lot to spend :P
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[23:54] <phatmonkey> I was going to do a payload this summer... but again, other things got in the way!
[23:54] <Laurenceb> I'd guesstimate £200, but its hard to say when you dont have loads of stuff lying about the place
[23:55] <Laurenceb> I like the page on the wiki, very well put together
[23:57] <Laurenceb> RocketBoy: didnt you make some sort of servo driver board?
[23:58] <RocketBoy> yep
[23:58] <Laurenceb> I'm just looking at how to monitor servo current consumption
[23:58] <Laurenceb> did you do that?
[23:59] <RocketBoy> nope - just somthing to drive upto 8 servos simultaniously
[23:59] <Laurenceb> theres the two at the top - http://uk.farnell.com/sensor-ics_current
[23:59] <Laurenceb> but it'd be nicer to have something a little cheaper and with slightly lower range - giveing greater resolution through my adc
[00:00] --- Sun Aug 10 2008