highaltitude.log.20090826

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[00:13] <Laurenceb> yeah 3 of those would run two brushless motors
[00:20] <Laurenceb> but a bit heavy
[00:20] <Laurenceb> probably an overkill
[00:21] <Laurenceb> - for driving the gyro motors
[00:21] <rjharrison_home> http://www.robertharrison.org/images/rtty/TEK0002.JPG
[00:21] <rjharrison_home> Some more rtty with color this time
[00:21] <rjharrison_home> colour
[00:22] <rjharrison_home> sorry we are in the UK... Well some of us
[00:22] <Laurenceb> heh what scope?
[00:22] <rjharrison_home> Shows the 200mV deltaV between mark and space
[00:22] <rjharrison_home> 2024b
[00:22] <rjharrison_home> TDS
[00:23] <ShellEvil> Laurenceb: I don't know about one-package thingys.
[00:23] <Laurenceb> yeah I'm not sure if its would save weight
[00:24] <ShellEvil> Laurenceb: I know it'd be moderately trivial to make from 6 SOT23 FETs
[00:24] <ShellEvil> some of the silly ones
[00:24] <Laurenceb> the micro rc plane guys use descreete fets
[00:24] <Laurenceb> or however you spell it
[00:28] <Laurenceb> http://search.digikey.com/scripts/DkSearch/dksus.dll?Detail&name=NTL4502NT1OS-ND
[00:28] <rjharrison_home> bed time
[00:28] <rjharrison_home> nights all
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[00:29] <ShellEvil> http://uk.farnell.com/international-rectifier/irlml2502pbf/mosfet-n-sot-23/dp/9102981
[00:29] <ShellEvil> stuff like that
[00:29] <ShellEvil> freescale also has insane stuff
[00:29] <ShellEvil> though not I think complementary
[00:30] <Laurenceb> interesting
[00:30] <ShellEvil> Umm - I don't mean freescale
[00:30] <Laurenceb> oh well I'd better get some sleep
[00:30] <Laurenceb> who?
[00:31] <ShellEvil> ah - fairchild
[00:31] <Laurenceb> ok
[00:31] <Laurenceb> cya
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[00:32] <ShellEvil> http://www.fairchildsemi.com/pf/FD/FDZ371PZ.html
[00:35] <ShellEvil> http://www.fairchildsemi.com/sitesearch/fsc.jsp?command=eq&attr1=Package+Type&attr2=1.0x1.5+WL-CSP&g=Family&vid=vKlJNbZs4sM2d&i=part_number&qid=q2pGrUjyHicyQ&s1=Product+Volume%2F%2F0&s0=Product+New%2F%2F0&q=25&a0=AAAFamily%2F%2Fv%3A0&as=1&qtid=n6fERgt2MfuDG&t=0&ia=1&c1=e%3A12%2F%2Fpart_type%2F%2F%3Aeq%2F%2Fg&c0=e%3A0%2F%2FAAAFamily%2F%2F%3Aeq%2F%2FMOSFET&qt=1251243275&domains=fairchild_db%3Apart_number&text=
[00:38] <ShellEvil> http://www.fairchildsemi.com/ds/FD%2FFDZ294N.pdf
[00:39] <ShellEvil> natrium42: http://rapidshare.com/files/271499858/Bang_Goes_the_Theory_Series_1_-_Episode_4_b00m704v_default.mov.html
[00:40] <natrium42> oooh, thanks a lot!
[00:40] Action: natrium42 downloads
[00:44] <ShellEvil> While searching - I found a link to http://www.bbc.co.uk/iplayer/episode/b00b3zjr/Page_Three_Teens/?src=ip_mp
[00:44] <ShellEvil> note the unique ID - :) (they claim it wasn't deliberate)
[00:44] <natrium42> lol
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[10:32] <rjharrison> Yo edmoore email
[10:32] <edmoore> rjharrison: lol
[10:32] <edmoore> a free tin of biscuits?
[10:33] <edmoore> well they're yours if you want them and want to add anything
[10:33] <edmoore> we are happy without
[10:34] <edmoore> rapid give you a multimeter....
[10:34] <rjharrison> A lot more usefull
[10:34] <rjharrison> I tell him no and to get the order off hold
[10:36] <edmoore> ta
[10:36] <edmoore> right gtg I'm afraid. thanks for dealing with that
[10:38] <rjharrison> I have put a plea out for the busicuits
[10:38] <rjharrison> see Bcc in email
[10:38] <rjharrison> edmoore mee too
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[12:47] <rjharrison> Help I have just got a 1000 of these in my farnell order any one got an idea what to do with them
[12:47] <rjharrison> http://uk.farnell.com/multicomp/rs3b/diode-fast-3a-100v-smd/dp/4085051
[12:48] <rjharrison> ShellEvil you normally have some ideas
[13:06] <ShellEvil> Make an x-ray camera?
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[13:43] <ShellEvil> http://www.fairchildsemi.com/pf/FD/FDZ294N.html _insanely_ small.
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[14:37] <rjharrison> ShellEvil, edmoore have swapped the 1000 diodes for a box of biscuits from Farnell
[14:39] <ShellEvil> Ah.
[14:39] <rjharrison> Better than an x ray camera
[14:39] <rjharrison> + what does one dow with 1000 3A diodes bit big for payloads
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[14:58] <ShellEvil> Aha!
[14:58] <ShellEvil> Lightning powered payload.
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[15:50] <ShellEvil> http://www.michaelyon-online.com/the-kopp-etchells-effect.htm?beautiful
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[17:44] <rjharrison> Any AVR fans out there
[17:44] <rjharrison> If I want to use the ADC with a Aref voltage how big can Aref be?
[17:45] <rjharrison> I assume 240v is bad but can it be 10v or 5v etc?
[17:45] <rjharrison> I have RTFM but the only thing I can find is that AVcc needs to be +-0.3v Vcc
[17:47] <rjharrison> ATmega328p FYI
[17:51] <rjharrison> Dashing off home back later
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[20:31] <SpeedEvil> rjharrison: Generally - ll pins must be from VCC+0.3V to Vss-0.3V - aref won't be an exception - nor will the analog inputs.
[20:35] <rjharrison_home> Ok thanks for that SpeedEvil
[20:35] <rjharrison_home> I thought you would know the answer to that
[20:55] <natrium42> SpeedEvil, yo, i watched bang goes the theory, thanks again!
[20:55] <natrium42> it was pretty cool
[20:57] <SpeedEvil> np
[20:58] <SpeedEvil> Tell all your friends. Just 150000 downloads, and I get a free t-shirt.
[20:59] <natrium42> lol
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[21:10] <rjharrison_home> Hi natrium42
[21:11] <natrium42> yo robert
[21:11] <rjharrison_home> You back from your jaunt around europe?
[21:11] <natrium42> sup?
[21:11] <natrium42> yes, thank god :)
[21:11] <rjharrison_home> It's great being away, but it's even nicer when you get home
[21:11] <natrium42> for sure
[21:12] <rjharrison_home> The next version of Icarus is going to be all sensored up
[21:12] <rjharrison_home> Humidity, Abs Pressure and diff pressure sensors all going on
[21:13] <rjharrison_home> Plus uSD card logging and payload cutdown using mosfets
[21:13] <rjharrison_home> and pyros
[21:13] <natrium42> whoa, awesome
[21:13] <natrium42> when are you planning to launch?
[21:14] <rjharrison_home> Well I think there is at least another 2 months of work befor launch
[21:14] <rjharrison_home> October 'ish
[21:16] <natrium42> coolz
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[22:11] <junderwood> rjharrison. I assume temperature measurement as well?
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[23:11] <Laurenceb> hello
[23:12] <rjharrison_home> right time for bed
[23:12] <rjharrison_home> nights
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[00:00] --- Thu Aug 27 2009