highaltitude.log.20090818

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[00:13] <hallam> natrium42, I know the feeling
[00:24] <Laurenceb> are there any upcoming launches?
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[10:50] <Laurenceb> http://www.space.com/missionlaunches/090817-inflatable-heat-shield.html
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[13:32] Action: SpeedEvil carries on waiting for OpenReach.
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[13:50] <ShellEvil> svn checkout http://powertop.googlecode.com/svn/trunk/ powertop
[13:50] <ShellEvil> hello, I mean.
[13:50] Nick change: ShellEvil -> SpeedEvil
[14:01] <Matt_APEX> o hi :)
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[16:07] <SpeedEvil> Yay - BT / OpenReach claim to have fixed my line.
[16:07] <SpeedEvil> I'm now trying every possible combination of 1-24 carriers in a group to disable on the upstream side to maximise my speed.
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[18:16] <nicros> anyone here from the US?
[18:16] Nick change: kingj -> KingJ
[18:17] <nicros> had a question about FAA regulations regarding unmanned free balloons.
[18:23] <DanielRichman> natrium42 is from canada, i think. does that count?
[18:23] <DanielRichman> nicros,
[18:24] <nicros> close enough i guess :)
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[20:10] <RocketBoy> cool if you havn't seen it already (I haddn't) http://www.youtube.com/watch?v=d4Rz7c0NJSE
[20:14] <RocketBoy> just as cool http://www.youtube.com/watch?v=0lG3zr0yaJw
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[20:26] <rjharrison_home> evening all
[20:26] <rjharrison_home> anyone heard from james yet?
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[20:38] <natrium42> hi rjharrison_home
[20:38] <natrium42> RocketBoy, what do you think about http://www.loctitefreezeandrelease.com/
[20:38] <rjharrison_home> Im interfacing an sd card with the avr and I'm interested how to connect a card detect switch
[20:38] <natrium42> could be used to cool parts down to test if they can handle it
[20:38] <rjharrison_home> hi natrium42
[20:39] <natrium42> card detect switch? pull up should work
[20:39] <rjharrison_home> Do I connect one side to Vcc and the other to a pin a test for input?
[20:39] <natrium42> you can use the pullups built into the avr
[20:40] <natrium42> if you use a pullup then connect one pin to ground, the other to avr
[20:40] <rjharrison_home> natrium42 tell me a bit more
[20:40] <natrium42> if you use pulldown, then use vcc
[20:40] <rjharrison_home> Ok pullup sounds better and safer
[20:41] <rjharrison_home> can I leave the pin hanging if no sd card inserted?
[20:42] <rjharrison_home> Which is in effect the open state or should it be pulled with a large R
[20:43] <RocketBoy> natrium: -43C isn't bad for a bit of spot testing - but I was thinking of somthing sustained for several hours
[20:44] <SpeedEvil> It's not really hard
[20:44] <rjharrison_home> The PCB freeze spay os about as good and less oil
[20:44] <SpeedEvil> freezer + little insulation box with peltier in it
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[20:46] <natrium42> <rjharrison_home> can I leave the pin hanging if no sd card inserted? <-- yeah, the pull up resistor will pull the line up
[20:46] <natrium42> so you will read 1 when card is out, 0 when card is in
[20:46] <rjharrison_home> Ahh yes it has one internally sorry forgot that
[20:47] <natrium42> you could even use an irq pin so that you get an interrupt if the card is pulled out
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[20:56] <rjharrison_home> Good point natrium42 I'll impement that
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[21:36] <hallam> hi edmoore
[21:36] <edmoore> hello
[21:36] <edmoore> sorry i got cut off last time - lost batt then went to london
[21:36] <edmoore> i mean to answer your question + check it's ok
[21:37] <edmoore> on connections i've made tween se4120 and gumstix
[21:40] <hallam> what did you go with?
[21:41] <hallam> the gumstix doesn't really give you many options since they don't expose any of the McBSPs :/
[21:41] <edmoore> just straight from se4120 to the gumstix's SPI port on the McNuggets
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[21:41] <edmoore> GPIO172 et al.
[21:42] <hallam> what did you do with frame sync on the se4120?
[21:42] <edmoore> GPIO174
[21:44] <hallam> ok that's probably the best bet
[21:44] <edmoore> SPI1_CSO - I will check that infact with t'ferg-a-naut as he copied and pasted this bit from rocket board
[21:45] <hallam> yeah apparently SPI slave support in openembedded sucks, we'll have to write our own drivers
[21:45] <edmoore> so I hear
[21:46] <hallam> can you put a 0.1in header for the relevant signals?
[21:46] <edmoore> np
[21:46] <hallam> actually we've been using molex microblade connectors here with great success, you might want to consider using them instead of 0.1in stuff
[21:47] <hallam> you do need to get the proper crimping tool but then it's pretty easy and very robust
[21:51] <edmoore> ok - could you link me up?
[21:51] <edmoore> I'mvery keen this gets on Friday's PCBTrain 'train'
[21:54] <hallam> http://www.molex.com/catalog/pdf/MX53015.pdf these guys
[21:54] <hallam> let me see if I can get you an eagle library
[21:57] <hallam> oh they're in the default eagle molex library
[21:57] <hallam> e.g. 53047-x where x is number of pins
[21:58] <edmoore> grand ta
[22:01] <hallam> yeah it's actually called picoblade not micro, sorry
[22:01] <edmoore> do you get 10^6 as many for your money?
[22:02] <hallam> heh
[22:03] <hallam> the crimp tool is expensive
[22:03] <hallam> but the system is very nice
[22:07] <edmoore> RocketBoy: I enjoyed last night
[22:08] <edmoore> looks like standard artistic (or perhaps bbc) license - 'oh btw this is my mate steve who designed all the electronics'
[22:15] <DanielRichman> yeah, kinda a shame that the only thing Steve said was 'ok', I think
[22:15] <DanielRichman> but it was good
[22:20] <RocketBoy> yeah Ok was about it - they cut out all the stuff i did in the studio in Hove
[22:20] <RocketBoy> still - the prog is too short to get everything in
[22:21] <RocketBoy> when they are trying to cover 1/2 doz topics in a 1/2 hour show
[22:23] <DanielRichman> Did you pretty much set everything up and tell the bbc guy to hold it and look like he knew what he was doing or did he know what was going on prior to you meeting?
[22:24] <RocketBoy> I had run though the basiscs in a meeting and the hove studio - so they knew what to expect - but on the day was the 1st launch they had been at
[22:25] <RocketBoy> Jem is a pretty clued up guy
[22:25] <RocketBoy> so he seems to know what he is doing
[22:26] <DanielRichman> cool
[22:26] <DanielRichman> were there two sets of gps/radios?
[22:26] <RocketBoy> especially when it comes to aronotical engineering
[22:27] <RocketBoy> yes - one in the main payload with 3 cameras - and one in the dallas doll
[22:27] <DanielRichman> ah, and a third camera on the doll itself?
[22:27] <DanielRichman> **fourth
[22:27] <RocketBoy> the doll had a box with a camera in at the dolls feet
[22:28] <RocketBoy> so 4 cameras in all
[22:28] <DanielRichman> cool... And I guess that the RTTY noises at the end/search were faked?
[22:28] <hallam> DanielRichman, try to decode them off the iPlayer stream and find out
[22:28] <RocketBoy> nope they seem real - and were in on the day
[22:28] <DanielRichman> no but - did that RTTY correspond to the video
[22:28] <DanielRichman> it sounded too clear
[22:28] <hallam> I am loking forward to watching this
[22:29] <hallam> looking*
[22:29] <RocketBoy> no all the video was captured in the cameras
[22:29] <DanielRichman> hallam, the balloon-specific bit is in a 5-minute video on the website
[22:29] <DanielRichman> RocketBoy, at the end, one of the bbc TV cameras was watching Jem run around with a yagi - and there were RTTY noises
[22:30] <hallam> DanielRichman, I still think I'd better wait until after work
[22:30] <RocketBoy> yep - it was comming out of my reciever
[22:30] <DanielRichman> ah, ok
[22:32] <RocketBoy> there was a lot of poetic licence used - but nothing seriously in error
[22:36] <RocketBoy> BBL
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[22:59] <rjharrison_home> nights
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[23:23] <Sarah_Palin> hello
[23:23] <Sarah_Palin> so I heard you guys can see russia from up there?
[23:23] <Sarah_Palin> is this true?
[23:23] <sbasuita> not that i know of
[23:24] <sbasuita> i doubt it
[23:24] <Sarah_Palin> ah dang
[23:24] <sbasuita> Sarah_Palin
[23:24] <sbasuita> Parah_Salin
[23:24] <sbasuita> :S
[23:24] <sbasuita> :P
[23:24] <DanielRichman> Sarah_Palin, your hostmask betrays you
[23:24] <DanielRichman> or, rather, lack of hostmask
[23:24] Nick change: Sarah_Palin -> Laurenceb
[23:24] <Laurenceb> bah
[23:24] <hallam> so 2008
[23:24] <DanielRichman> :D
[23:25] <sbasuita> that was poor
[23:25] <sbasuita> too tired to spot it
[23:25] <sbasuita> just got back from the peak district
[23:25] <DanielRichman> one grep and you're caught. next time, use the web client ;)
[23:25] <DanielRichman> or get yourself an IP you can change
[23:25] <DanielRichman> they're useful
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[23:31] <Laurenceb> sbasuita: cool I live there
[23:31] <Laurenceb> where did you go?
[23:31] <sbasuita> Laurenceb, stayed at my aunt's in hadfield (NW of glossop)
[23:32] <sbasuita> did some cycling
[23:32] <sbasuita> hiking
[23:32] <sbasuita> etc
[23:32] <sbasuita> Laurenceb, whereabouts are you?
[23:32] <Laurenceb> ah further south
[23:32] <Laurenceb> ashbourne - used to live in buxton
[23:32] <sbasuita> ooh, went to buxton
[23:32] <sbasuita> ; P
[23:33] <sbasuita> ate at 'simply thai'
[23:33] <Laurenceb> its not too exciting
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[23:49] <Laurenceb> bbl]
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[00:00] --- Wed Aug 19 2009