highaltitude.log.20110202

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[00:02] <MrCraig> hi all... I can't stay but for anyone interested - http://ballooncam.blogspot.com/2011/02/cnc-milling-machine-working.html I'd love some followers on there or twitter craigchapman_uk :-) Night night.
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[00:32] <juxta> ping Darkside
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[00:56] <Darkside> ping
[00:56] <Darkside> pong juxta
[00:56] <Darkside> was away
[00:56] <juxta> ahoy
[00:57] <Darkside> will be speaking to mike at 2:30pm
[00:57] <juxta> so I went for a walk on the beach last night and found a wireless ADSL modem
[00:57] <Darkside> lol
[00:57] <juxta> i thought it was a bit odd
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[01:18] <nevyn> juxta: hrm new attack vector.
[01:19] <nevyn> place compramised wireless ADSL modem on beach hope target collects and plugs into secure network.
[01:19] <nevyn> slurp data off secondary wifi sid
[01:20] <juxta> heh
[01:21] <juxta> this is a carrier branded modem
[01:21] <juxta> normally it would have decent functionality but it's all been locked out in firmware
[01:34] <Darkside> hmm
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[02:37] <StrayVoltage> http://news.bbc.co.uk/2/hi/programmes/newsnight/9377875.stm
[02:38] <StrayVoltage> Slimeballs.
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[06:29] <earthshine> morning
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[10:49] <Elwell> juxta_: *cough* dc-unlocker :-)
[10:49] <juxta_> hey Elwell - not that kind of modem :)
[10:50] <juxta_> it's an ADSL modem with wireless/voip/etc
[10:50] <Elwell> aaah ok
[10:50] <Elwell> yeah I misread
[10:51] <Elwell> got my E220 on a cheap deal on three and paid for unlock and still came home with change from 40 quid at the time
[10:51] <juxta_> hehe, I got an old three modem off ebay back in the day, unlocked it and used it with another carrier
[10:52] <Elwell> yeah, mine has a swisscom sim in it just now, as orange.fr gave the newer model so cheap I got that as a second
[10:52] <Elwell> (living on the border is a PITA sometimes)
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[13:32] <NigeyS> afternoon
[13:37] <Elwell> o/
[13:37] <NigeyS> hi Elwell
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[13:40] <Laurenceb> http://www.youtube.com/watch?v=fwyMuwNYKvI
[13:44] <NigeyS> thats alot of kit to kill mossies !
[13:51] <griffonbot> Received email: Martin Sweeney <martin.sweeney@gmail.com> "[UKHAS] Project Space Planes"
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[13:54] Topic changed on #highaltitude by jonsowman!jonsowman@sheeva.hexoc.com: Welcome to #highaltitude - discuss anything to do with high altitude projects (balloons, gliders, etc) www.ukhas.org.uk
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[13:58] <NigeyS> hi jonsowman
[13:58] <jonsowman> hi NigeyS
[13:59] <NigeyS> how's you ?
[14:00] <jonsowman> yeah fine thank you
[14:00] <jonsowman> yourself?
[14:00] <NigeyS> not good, the atlas board has died on me :(
[14:00] <jonsowman> oh dear
[14:00] <jonsowman> that's not so good
[14:00] <NigeyS> no, think its the new vreg
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[14:06] <NigeyS> im having a hard time trying to figure out which 1's sparkfun have sent me, it doesnt say ld1117 it just says ld33v :|
[14:08] <jonsowman> the sf page give the datasheet for "LD1117V33 for ICs marked LD33V - 3.3V Regulator"
[14:08] <jonsowman> so just treat them as LD1117
[14:08] <NigeyS> ahh oki, just didnt want to get the pins wrong, these things get kinda hot :|
[14:08] <jonsowman> yeah
[14:09] <jonsowman> I assume that's right
[14:09] <jonsowman> don't quote me on it
[14:09] <jonsowman> hmm actually
[14:09] <jonsowman> read the comments on the sf page
[14:09] <NigeyS> reading them now, seems to be some confusion :|
[14:09] <jonsowman> yes indeed
[14:10] <jonsowman> someone confidently states that it's GND, VO, VI
[14:10] <NigeyS> ill try the G Vout Vin
[14:10] <NigeyS> will it damage the lipo if its wrong ? thats all im concerned about
[14:10] <jonsowman> short circuiting the lipo will damage it
[14:11] <jonsowman> it will also get hot and eventually catch fire
[14:11] <jonsowman> i'd test it with 3xAAs or a bench psu first
[14:11] <jonsowman> preferably the latter if you have one
[14:11] <NigeyS> have to be 3aa's no bench psu here
[14:11] <jonsowman> that is certainly better than the lipo
[14:12] <jonsowman> just stick an LED or something on the output of the Vreg so you know if it's working
[14:12] <jonsowman> with a resistor of course
[14:13] <NigeyS> oki tnx jon
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[14:45] <NigeyS> hmmz can i use a 240ohm in place of a 220? my 220's have gone walkies :|
[14:46] <fsphil> yep yep
[14:46] <jonsowman> what for?
[14:47] <NigeyS> led
[14:47] <jonsowman> oh yeah that'll be fine
[14:47] <NigeyS> tnx phil .. well it lit so i guess everything is connected properly
[14:47] <NigeyS> no heat on the batteries, or the vreg
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[14:53] <jonsowman> sounds promising
[14:54] <NigeyS> i get nervous with explosive batteries
[14:54] <NigeyS> and never sure wether you connect ground first or v+
[14:54] <Dan-K2VOL> What are you using NigeyS
[14:55] <NigeyS> just trying to hook a couple of diff vregs to a lipo and a breadboard dan, there seems to be some voltage drop on the atlas pcb i cant account for so wanted to do an off board test.. which has proved something on the atlas other than the diode is causing a .4v drop :(
[14:56] <NigeyS> lipo on breadboard with led.. i get 3.25v .. atlas i get 2.72 with no led just a diode
[14:57] <jonsowman> bbl
[14:58] <Dan-K2VOL> Oh interesting .4v is a bunch, are all the PCB traces nice and wide?
[14:58] <Dan-K2VOL> For the power
[15:00] <NigeyS> they seem fine, and james hasnt had any issues with the pcb afaik
[15:00] <NigeyS> problem is, the gps doesnt stay stable when it gets below 2.75, which is after about an hour with the lipo
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[15:09] <fsphil> you should try measuring the current being used by the board
[15:09] <fsphil> see if something is draining more than it should be
[15:10] <NigeyS> about the only option left i think
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[15:31] <NigeyS> hi Zuph
[15:35] <Zuph> Morning, NigelMoby
[15:35] <Zuph> Morning, NigeyS
[15:35] <Zuph> bleh tab completion
[15:35] <NigeyS> oops im here twice, dam phone!
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[15:36] <NigeyS> a shot in the dark.. but would anyone have an idea why my amplifier has developed the annoying humming sound? :(
[15:38] <Colin-G8TMV> earth loop, failed cap, it hates you
[15:38] <fsphil> aliens
[15:39] <NigeyS> dammit :( thats the second 1 thats done it
[15:39] <NigeyS> took months to get it changed
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[15:49] <Laurenceb> failed cap seems likely
[16:07] <NigeyS> meh back it goes then :(
[16:10] <SpeedEvil> NigeyS: It forgot the words.
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[16:12] <NigeyS> haha good 1 ! :p
[16:12] <NigeyS> prolly fed up of playing trance music every day
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[16:57] <Dan-K2VOL> anyone ever cryo test the SensorTechnics valves?
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[17:08] <mattltm> Hi all :0
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[18:10] <Dan-K2VOL> hi mattltm
[18:36] <mattltm> Hey Dan :)
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[18:50] <SpeedEvil> Laurenceb: Off topic again - do you have a recommended 3D sketch program - I'd like to do something more than simple scribbles on A4 to work out insulation details?
[18:51] <Dan-K2VOL> Hrm, google sketchup is OK, and better than OK, It's free and widely used
[18:51] <Dan-K2VOL> I use that for doing parts on the makerbot
[18:51] <mattltm> Sketch is good once you get your head round it.
[18:52] <Dan-K2VOL> do take the tutorials on whatever program you choose
[18:52] <SpeedEvil> I suppose I could try it under wine.
[18:52] <mattltm> Ohh... Linux... How about blender?
[18:52] <mattltm> http://www.blender.org/
[18:53] <Dan-K2VOL> I've never found a cad program that was intuitive
[18:53] <SpeedEvil> blender seemed a bit scary last time I looked at it.
[18:53] <SpeedEvil> yeah
[18:53] <mattltm> Blender is a beast :)
[18:53] <laurence_> SpeedEvil: other than povray, no
[18:53] Nick change: laurence_ -> Laurenceb_
[18:53] <mattltm> http://www.blender.org/typo3temp/pics/78e233d59d.jpg
[18:54] <mattltm> http://www.blender.org/index.php?eID=tx_cms_showpic&file=uploads%2Fpics%2F3D-Watch_Olivier-Amrein_December2007.jpg&width=800m&height=600m&bodyTag=%3Cbody%20style%3D%22margin%3A0%3B%20background%3A%23fff%3B%22%3E&wrap=%3Ca%20href%3D%22javascript%3Aclose%28%29%3B%22%3E%20|%20%3C%2Fa%3E&md5=99ad34cace623d58afcba1ee9ea50c0b
[18:54] <mattltm> 1/2 an hour and you'll be knocking out images like that!
[18:54] <Laurenceb_> ive tried sketchup, but found it far from intuitive
[18:54] <Laurenceb_> nice
[18:54] <SpeedEvil> Hmm
[18:55] <mattltm> Check out the blender gallery...
[18:55] <mattltm> http://www.blender.org/features-gallery/gallery/art-gallery/
[18:55] <SpeedEvil> I suppose I do have kpoceditor
[18:55] <SpeedEvil> but it wasn't great last time I looked, and diddn't support many prmitives
[18:55] <SpeedEvil> yeah - I want an art gallery from people who have used it for a couple of hours.
[18:56] <SpeedEvil> They don't tend to do those though. :)
[18:56] <mattltm> lol
[18:56] <Laurenceb_> i usually use dia for 2D stuff
[18:56] <Laurenceb_> seldom need 3D
[18:57] <mattltm> After 1 hour on blender... http://www.spurgeonworld.com/blog/images/2007/mommychairs.jpg
[18:57] <Laurenceb_> lol
[18:57] <SpeedEvil> :)
[18:58] <mattltm> Down to some serious business... I got my first Arduino today :)
[18:58] <mattltm> And I've made the led blink. Yay!
[18:59] <mattltm> Got no idea what to do next thought. I'm more of a PHP man.
[18:59] <SpeedEvil> Install PHP on it.
[18:59] <SpeedEvil> You may need to port it a bit.
[19:00] <mattltm> It can run php?
[19:00] <SpeedEvil> But you can swap to SD.
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[19:01] <SpeedEvil> Probably not, no.
[19:01] <mattltm> Are there any good sketches that I can start off with? I have an NTX2 sitting here that I could play with.
[19:01] <mattltm> Maybe get it sending a simple string?
[19:01] <NigeyS> good luck with the ntx 2 :p
[19:02] <Dan-K2VOL> mattltm, the library example sketches are a great place to start
[19:02] <Dan-K2VOL> try them, then modify them to see how the commands work
[19:02] <mattltm> You, Ive had a play with some of them.
[19:02] <Dan-K2VOL> good
[19:03] <mattltm> I've also written a simple sketch that reads in input from a CT clamp and posts it to a web URL
[19:04] <mattltm> Made a simple power graph
[19:04] <Laurenceb_> Randomskk: is your weather station working?
[19:05] <Dan-K2VOL> nice
[19:05] <Laurenceb_> i was thinking it might be useful for testing superpressure balloons on the ground
[19:05] <mattltm> Laurenceb_: Not sure if it would be of any use but I have a weather station on the web.
[19:05] <Laurenceb_> nope
[19:06] <Laurenceb_> Randomskk has a weather station board he built - it could be useful as a datalogger for a ground test of a zero pressure balloon
[19:06] <mattltm> Ahh
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[19:11] <Laurenceb_> well ideally setup the balloon outside and add a sensortechnics i2c diff pressure sensor and thermocouple mounted inside the envelope
[19:11] <Laurenceb_> then see what happens
[19:11] <Laurenceb_> of course it need calm weather and a way to mount the balloon
[19:12] <Laurenceb_> then we could find the burst pressure of different mylar balloons, together with the leak rate, how much they heat up in sunshite etc. etc
[19:13] <Laurenceb_> *sunshine - freudian slip
[19:13] <mattltm> Nice.
[19:18] <SpeedEvil> You're all excited about mounting balloons, it's only to be expected.
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[19:24] <MrCraig> anyone here have any experience with Mach3 and cnc mills in general? Any ideas if the motors should be getting hot when hardly used or if it could be a pulse setting issue?
[19:26] <MrCraig> btw awesome typo Laurenceb
[19:28] <Dan-K2VOL> Laurenceb_ the solar infrared radiation on ground level is less than at altitude, so do account for that
[19:28] <SpeedEvil> MrCraig: What do you mean 'hardly used'?
[19:29] <SpeedEvil> MrCraig: At low RPM, and high torque, they are working hard, with inadequate cooling, due to fans not working
[19:29] <MrCraig> They were stationary for the majority of the time yesterday evening, but were very hot after only "cutting" one piece
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[19:29] <MrCraig> there aren't any cooling fans or systems, it's a desktop mill
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[19:37] <griffonbot> Received email: Solar Balloonman <billings.stephen75@gmail.com> "[UKHAS] Re: Project Space Planes"
[19:39] <griffonbot> Received email: Adam Greig <random@randomskk.net> "Re: [UKHAS] Re: Project Space Planes"
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[20:11] <Laurenceb_> Dan-K2VOl: well nothing is perfect
[20:11] <Laurenceb_> MrCraig: Mach3 turbo?
[20:12] <MrCraig> Laurenceb - the cnc software not the razor
[20:13] <MrCraig> though a friend posted a facebook post today about his new gilette proglide with vibration and a blue LED - I think he thinks it's a sonic screwdriver.
[20:13] <Laurenceb_> lol
[20:14] <Laurenceb_> mach3 SR71
[20:14] <Laurenceb_> an alternative and more dengerous razor technique
[20:14] <MrCraig> lol
[20:15] <MrCraig> I've been looking up tutorial vids - I don't know how the software works really, even in it's most basic functions. I've got to learn how to set the machine zero and limits because it has no limit switches. I've also got to fiddle with settings to make sure it's not overheating the motors when stationary. (they do sing some)
[20:16] <MrCraig> but I'm burning reserve fuel now, little sleep this week. Thinking I might turn in early.
[20:20] <MrCraig> Yup, going to sleep - mind feels like a rock. nighters :)
[20:20] <Laurenceb_> http://www.shef.ac.uk/mediacentre/2011/1834-video-earth-edge-space.html
[20:20] <Laurenceb_> i do not beieve it
[20:20] <MrCraig> I posted this on my blog yesterday - are they from ukhas?
[20:20] <Laurenceb_> that guy lives down the street from me, I was at school with him
[20:21] <MrCraig> hah coincidence ?
[20:21] <Laurenceb_> unbelievable
[20:21] <Laurenceb_> heh he was in my A level further maths class :P
[20:22] <Laurenceb_> A GPS tracking system, CATtrack, sent a text displaying its location when rung, allowing it to be collected.
[20:22] <Laurenceb_> fail
[20:22] <MrCraig> fail?
[20:23] <MrCraig> ok, really gotta go - getting harrassed and need to sleep. night night - til tomorrowz
[20:23] <Laurenceb_> the tracking
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[20:23] <Laurenceb_> but - 35km
[20:23] <Laurenceb_> wtf
[20:23] <Laurenceb_> http://www.shef.ac.uk/content/1/c6/11/80/37/Thin-Blue-Line_large.jpg
[20:23] <Laurenceb_> wow
[20:23] <Laurenceb_> thats one of the best photos ive seen
[20:24] <Laurenceb_> ill have to call round his house lol
[20:25] <Laurenceb_> but... did he have a NOTAM
[20:25] <fsphil> wide-angle lens?
[20:25] <Laurenceb_> we are right under flight paths from east midlands and manchester here
[20:26] <Laurenceb_> ah he used this - http://www.mr-lee-catcam.de/pe_cc_i9.htm
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[20:29] <Laurenceb_> ill have to dig out his email
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[20:29] <Dan-K2VOL> ah here's something that would be great for ballast and cutdown experimentation
[20:30] <Dan-K2VOL> not available of course: http://www.inventables.com/technologies/electrelease-epoxy
[20:30] <Dan-K2VOL> An epoxy that releases when 50vDC at a few mA are applied to it
[20:30] <Dan-K2VOL> no low temp limit
[20:31] <Laurenceb_> crazy
[20:31] <griffonbot> Received email: Ed Moore <eam52@cam.ac.uk> "Re: [UKHAS] Re: Project Space Planes"
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[23:39] <NigeyS> ping zuph
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[23:48] <NigeyS> drat
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[23:57] <Zuph> pong NigeyS
[23:57] <NigeyS> :p hey Zuph
[23:57] <Zuph> (Had to run out and get beer)
[23:57] <NigeyS> oo musnt forget the beer !
[23:57] <Zuph> Absolutely not.
[00:00] --- Thu Feb 3 2011