highaltitude.log.20150120

[00:00] <lz1dev> anyone running firefox on OSX ?
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[00:19] <Laurenceb__> anyone running firefox?
[00:19] <Laurenceb__> /troll
[00:19] <Laurenceb__> I try to run it on linux
[00:19] <Laurenceb__> but usually it just eats either my ram or processor, or both
[00:22] <ulfr> I tried, gave up. Which is a shame.
[00:22] <ulfr> ff is kind of the nicest browser, just too slow and eats up memory :(
[00:23] <adamgreig> i have it on both linux desktops, linux laptop and os x laptop
[00:23] <adamgreig> no issues with memory..
[00:23] <adamgreig> but i do tend to have a lot of memory around, so i probably wouldn't notice :p
[00:35] <lz1dev> it should get better in upcoming releases, they should have the tab-process separation
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[00:44] <SpacenearUS> New vehicle on the map: 03KF5PGW - 12http://habhub.org/t/#!qm=All&q=KF5PGW
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[02:06] <Oddstr13> lz1dev: one process per tab? isn't that going to add extra overhead?
[02:06] <Oddstr13> on the other side, it would allow me to kill the culpit from my process manager
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[08:14] <Piet0r> About the funny looking plane on the picture @ http://en.wikipedia.org/wiki/Conroy_Tri-Turbo-Three
[08:14] <Piet0r> What is that yellow box on the foreground?
[08:14] <Piet0r> I've seen them before but I thought they were for bats :p
[08:15] <UpuWork> runway lights
[08:16] <Piet0r> Ah
[08:16] <Piet0r> So simple ;)
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[08:17] <UpuWork> or taxiway identifications
[08:18] <Piet0r> Or maybe some signaling device?
[08:18] <Piet0r> On my local airport i've only seen 4 of them
[08:18] <Piet0r> very close to each other
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[09:13] <Vaizki> "bat boxes" are usually vertical, open at the bottom and quite narrow because that's how they like them
[09:14] <Vaizki> http://www.batcon.org/resources/getting-involved/install-a-bat-house
[09:14] <Vaizki> and you don't want them on the ground for sure :)
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[09:54] <Piet0r> Yeah I found a bit odd
[09:54] <Piet0r> *it
[09:56] <craag> Looks like a VASI
[09:57] <craag> http://en.wikipedia.org/wiki/Visual_approach_slope_indicator
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[10:09] Action: storm_work wants to go home from work and "work" on his payload ;)
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[10:12] <Vaizki> don't forget the kleenex
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[10:25] <SpacenearUS> New vehicle on the map: 03DC2EH-2 - 12http://habhub.org/t/#!qm=All&q=DC2EH-2
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[10:48] <storm_work> Vaizki: no comment ...
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[11:26] <Piet0r> Yeah that must be it
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[12:31] <DL7AD> afternoon
[12:35] <HF_ATL> good aft DL7AD
[12:35] <DL7AD> hi HF_ATL
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[12:56] <Laurenceb> https://www.youtube.com/watch?v=KXxzXFCYmPw&feature=youtu.be
[12:57] <mattbrejza> has anyone tried their 100bps modem?
[12:58] <SpeedEvil> mattbrejza: BT broadband?
[12:58] <mattbrejza> lol nope
[12:59] <SpeedEvil> 3 months after 'fibre rollout' - I checked to see if I could get FTTC.
[12:59] <SpeedEvil> No - so buy nice DSL modem which could do openwrt!
[12:59] <SpeedEvil> Of course - check again 5 months after, and ...
[12:59] <SpeedEvil> Grr
[13:05] <mfa298> I did get this piece of classic advertising from BT a year or two ago. http://imgur.com/NMdzVJ8
[13:06] <mfa298> I hope your documents are fairly short.
[13:07] <lz1dev> 2kb photos?
[13:08] <mfa298> you're not allowed photoes that large ;)
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[14:49] <SpacenearUS> New vehicle on the map: 03KD0ZTV-1 - 12http://habhub.org/t/#!qm=All&q=KD0ZTV-1
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[16:03] <Laurenceb> http://gushh.net/tmp/arduinoshield.png
[16:04] <jonsowman> holy crap
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[16:05] <mattbrejza> i approve of this shield
[16:06] <daveake> I think you might need a shield to protect you from the shield
[16:06] <SpeedEvil> :)
[16:06] <mattbrejza> na, its only 110V in 'merica
[16:07] <mattbrejza> almost lickable
[16:07] <daveake> PP3 is my limit
[16:08] <edmoore> you only have to start carting about this shit above 80v
[16:08] <mattbrejza> i would like to see what happens if you do that though (the shield, not hte licking)
[16:08] <edmoore> caring*
[16:08] <SpeedEvil> People have died due to 24V shock
[16:08] <mattbrejza> although the limit of caring is somewhat less for your tongue
[16:08] <mattbrejza> *lower
[16:09] <SpeedEvil> though, admittedly, it was a guy lying on a metal grounded catwalk, naked, in 30C heat, who got hit by a large area electrode on his chest
[16:09] <SpeedEvil> Well - not naked - but with no shirt
[16:12] <SpeedEvil> Actually - the report just said no shirt - not if he was also naked.
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[16:43] <mbales__> naked eletrical work is the best kind fo work
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[17:02] <mbales__> heres my APRS board faimly, older versions on top newest on the bottom: https://www.dropbox.com/s/9ewvqp2swt5rnn0/2015-01-20%2008.56.44.jpg?dl=0
[17:02] <mbales__> couldnt find my banana for scale :/
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[17:22] <Oddstr13> http://puu.sh/eMITD/82e928335d.png looks like data to me
[17:22] Nick change: pjm -> Guest59858
[17:24] <Oddstr13> nexa remote -> cheap 434MHz receiver connected to the GPIO of a Raspberry Pi
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[17:29] <mbales__> that does indeed look like data
[17:29] <mbales__> or very well organized noise
[17:30] <Oddstr13> now to figure out how to decode this / how fast one needs to sample
[17:31] <tweetBot> @daveake: New blog post - our PITS+ "Pi In The Sky" board for the Raspberry Pi A+/B+. Also lots of advice for newbies. http://t.co/vnlYdwNaHZ #UKHAS
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[17:41] <Oddstr13> any pointers on where to start when decoding that signal?
[17:41] <mbales__> can you give us some background on what it should be?
[17:42] <mbales__> ie what is generating it etc
[17:42] <Oddstr13> it is the switch on signal of the NEXA NEYCT-705 remote control
[17:43] <Oddstr13> you know, remote controlled power (mains) switches
[17:43] <mbales__> do you have a logic analyzer? cause that would make it easy
[17:43] <Oddstr13> nothing more sophisticated than the GPIO of a Pi / Arduino
[17:44] <mbales__> alright, let me do a little digging here and see what i can find
[17:44] <Vaizki> what do you want to know about the signal?
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[17:44] <mbales__> http://cosa-arduino.blogspot.com/2013/05/more-rf433-wireless-home-automation.html
[17:44] <Oddstr13> ultimatly, I want to be able to reproduce the signal to control it with the Pi
[17:45] <Oddstr13> right now, I'd like to learn a bit more about reverse engineering such signals
[17:46] <Oddstr13> http://puu.sh/eMLW9/6fff1e22b5.png
[17:46] <Vaizki> well a LA would be your friend
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[17:46] <Vaizki> because they can decode lots of stuff on their own
[17:46] <Oddstr13> like, what kind of modulation it is and so forth
[17:46] <Vaizki> it's OOK
[17:47] <Vaizki> on off keyong
[17:47] <Vaizki> keying even
[17:47] <Vaizki> http://en.wikipedia.org/wiki/On-off_keying
[17:47] <Oddstr13> yes, that much I've figured, but how is the data encoded?
[17:48] <Vaizki> there's clearly a sync in the start and end with longer high-low pulse pair
[17:48] <mbales__> that link i sent should have a link to his library for arduino, just look through there and its all explained
[17:48] <Vaizki> do you have a DSO or is this off the arduino pin?
[17:49] <Oddstr13> mbales__: Havn't been able to find the code for it yet, I'll keep looking tho
[17:49] <Oddstr13> Vaizki: it's from the GPIO of my RPi actually
[17:49] <mbales__> https://dl.dropboxusercontent.com/u/993383/Cosa/doc/html/d0/d4a/classNEXA_1_1Transmitter.html
[17:49] <Oddstr13> http://oddstr13.openshell.no/paste/VL6VPWRx/
[17:50] <mbales__> down at the bottom theres a link to the nexa.h and nexa.cpp
[17:50] <mbales__> those are your arduino files which containt all the code
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[17:51] <Vaizki> hmmh
[17:51] <Oddstr13> mbales__: derp, didn't find the code when I browsed that thing last night
[17:52] <mbales__> its not the most obvious placement
[17:52] <Vaizki> it doesn't look like straight OOK after all.. the HIGH pulses should be pretty much the same length
[17:53] <db_g6gzh> If you have an example for your device now you may not be as interested but I've used https://github.com/jimstudt/ook-decoder with an RTL SDR to examine and reverse engineer stuff off air
[17:53] <Vaizki> but they are not
[17:53] <Vaizki> it looks like there is a short-long and short-short-long code in there
[17:53] <Vaizki> which probably represent 0 and 1
[17:55] <Vaizki> err hmm also long without short :)
[17:55] <Oddstr13> could it be that it's just straight out a binary stream output at a certain clock speed?
[17:55] <Vaizki> I would definitely want to see that on something that samples faster than wiringpi
[17:56] <Oddstr13> I did record it in AM mode on the rtl-sdr the other day
[17:58] <Vaizki> https://github.com/txt3rob/RPI-Control
[17:58] <Vaizki> looks like someone did a nexa controller for the pi
[18:00] <Oddstr13> welp
[18:01] <Oddstr13> sudo echo "www-data ALL=(ALL) NOPASSWD: ALL" >> /etc/sudoers
[18:01] <Vaizki> no, don't do that
[18:01] <Oddstr13> NOPE on so many levels
[18:01] <Laurenceb> any git experts here?
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[18:01] <Laurenceb> atm I have a git repo thats not tracking anything
[18:01] <Laurenceb> how do i set it to track my project?
[18:02] <Vaizki> Oddstr13: but if you are serious about reverse engineering, get a DSO and a logic analyzer (LA)
[18:02] <Oddstr13> DSO?
[18:02] <Vaizki> digital storage oscilloscope
[18:02] <Oddstr13> ah
[18:04] <Vaizki> but if you know it's logic level, then all you need is a LA
[18:04] <Vaizki> I use saleae myself
[18:04] <Oddstr13> well, I have considered something like this https://www.sparkfun.com/products/13196
[18:05] <Oddstr13> but it is a relativly large sum for one tool
[18:05] <mbales__> http://www.seeedstudio.com/depot/preorder-open-workbench-logic-sniffer-p-612.html?cPath=75
[18:05] <mbales__> ^i use one of these^
[18:05] <Oddstr13> and a proper soldering station is higher on my priority list
[18:05] <mbales__> cheap, works well for most applications and is cheap
[18:06] <Vaizki> Oddstr13: yea I have the Logic 8, older model without analog
[18:06] <Vaizki> it kicks serious ass
[18:07] <Oddstr13> Vaizki: yea, new model since last time I checked :P
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[18:07] <Vaizki> most of the magic is in the software with LAs
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[18:07] <Vaizki> saleae have great software and that's why there are cheap ebay clones of their HW
[18:08] <Vaizki> but we don't buy clones, do we
[18:08] <Vaizki> haven't used SUMP though
[18:08] <Oddstr13> depends on what we're buying in the first place :P
[18:08] <Oddstr13> but, yea, tools like these need to work proerly, so no cheap clones :P
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[18:09] <mbales__> :( whats the fun in using tools that work without any cludging
[18:09] <Oddstr13> mbales__: the /TOOLS/ need to work, you're supposed to mess with other stuff using said tools
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[18:10] <mbales__> pffft, but then it would be work and not a hobby
[18:11] <Oddstr13> you get paid for work, and you pay for hobby... :P
[18:12] <mbales__> i dont get paid for either usually, haha
[18:12] <Oddstr13> lol...
[18:12] <Jo_> Hi there! Anybody familiarized with troubleshooting for the arduino-radiometrix?
[18:12] <mbales__> whats the trouble?
[18:13] <SpeedEvil> I'm guessing before the hyphen.
[18:13] <Jo_> Ino signal detected :(
[18:13] <mbales__> can you be more specific?
[18:13] <Jo_> the SDR#
[18:13] <mbales__> no output from the radio or nothing out from the arduino?
[18:13] <Jo_> radio
[18:14] <Jo_> arduino seems to be fine.
[18:14] <mbales__> what radiometrix module?
[18:14] <Jo_> 2B
[18:14] <Jo_> NTX2B
[18:14] <Jo_> using funcubedongle+
[18:15] <Jo_> arduino uno
[18:15] <mbales__> is the enable pin pulled high and are you giving it enough power?
[18:15] <Jo_> I'm using the code given in the wiki.
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[18:16] <mbales__> can you verify that the enable pin is being pulled high? a multimeter or o-scope should do the trick
[18:17] <Jo_> I cheked with a LED
[18:17] <Jo_> it does turn on, and it oscillates, though the change of intensities are very small
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[18:18] <Jo_> however, when LED coupled with the radiometrix, it barely turns on.
[18:18] <mbales__> what are you using to supply power?
[18:19] <Jo_> connected to my laptop
[18:19] <mbales__> so USB then, you may try using something that can supply more power, could be your pulling more that the 500ma you USB can supply for some reason
[18:20] <mbales__> can you send a schematic or pic of your setup?
[18:21] <Jo_> i could send a pic.
[18:21] <mbales__> that may be helpful
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[18:22] <Jo_> now the question how exaclty I'd do that
[18:22] <mbales__> dropbox is handy for that
[18:22] <mbales__> or google drive
[18:22] <Jo_> email?
[18:23] <mbales__> do you use gmail?
[18:23] <mattbrejza> imgur
[18:23] <Jo_> hotmail...
[18:23] <mattbrejza> printscreen, goto imgur, cntrol + V, done
[18:23] <mbales__> ^this^
[18:23] <mfa298> +1 for imgur
[18:23] <mattbrejza> and then everyone can have a look
[18:24] <Jo_> sec
[18:25] <Jo_> creating an account :/
[18:25] <mattbrejza> you dont need to (although it helps later if you want to find an image again)
[18:27] <jonsowman> $ curl --upload-file thing.png https://transfer.sh/thing.png
[18:27] <jonsowman> ;)
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[18:29] <mattbrejza> my method doesnt leave your desktop covered in temporary files that i never bother removing
[18:29] <Jo_> one sec
[18:29] <Jo_> I suck at this... lol
[18:30] <mfa298> mattbrejza: that's why you use /tmp to put things in, especially important documents
[18:31] <Jo_> http://i.imgur.com/6NXEBU4.jpg
[18:32] <Jo_> :)
[18:32] <mbales__> :( i really suggest you add an antenna or dummy load to prevent damage to your radio ffront end
[18:34] <mfa298> mbales__: the ntx2b is low enough power it's unlikely to do much damage to itself (yes dummy load is good practice but mostly redundant here it's only a 10mW tx)
[18:34] <mbales__> ah, missed the output in the data sheet, but yeah best practice and all
[18:35] <mfa298> Jo_: without the arduino sending anything can you see the carrier from the ntx2b on sdr# it should be a clear peak.
[18:37] <Jo_> I don't think so.
[18:37] <Jo_> I see some small peaks. But the stay when I disconnect the whole thing, so...
[18:38] <Jo_> I don't know what's the deal
[18:38] <mfa298> that would be the first thing to find.
[18:38] <Jo_> For some reason they don't appear :/
[18:38] <mfa298> obvious two issues, either you're not gettign enough power. or if it's an earlier ntx2b there was a firmware bug (with it powered try connected en to ground then back to vcc)
[18:39] <Jo_> I just got it 2 days ago. Not sure about the firmware
[18:39] <Jo_> maybe it's first option
[18:39] <Jo_> USB is supplying power
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[18:41] <mfa298> as someone mentioned above you don't get much power from usb. so there might not be enoguh juice for the ntx2b to start up properly
[18:42] <mfa298> the old firmware was ~1 year ago so would hopefully be fixed (especially if you got it from hab supplies)
[18:42] <mattbrejza> perhaps if it is a potato powered usb port anyway
[18:42] <Jo_> potato powered usb port? lol
[18:42] <Jo_> yeah probably
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[18:44] <Jo_> willl try now with a diffent power supply
[18:44] Action: mfa298 knows a few guys that got onto various news sites for a potato powered web server
[18:45] <mattbrejza> only one potato?
[18:46] <mfa298> apparently enough potatoes to power a UG compute server.
[18:46] <mfa298> it may not have actually been powered by potatoes.
[18:47] <mfa298> mattbrejza: you might reckognise most of the IP address: http://totl.net/Spud/
[18:48] <mattbrejza> heh
[18:48] <mattbrejza> its dead now :(
[18:49] <mfa298> it's been dead for a number of years.
[18:49] <mattbrejza> http://news.bbc.co.uk/1/hi/sci/tech/759529.stm oh lol
[18:49] <mattbrejza> 14 yrs ago
[18:51] Action: mfa298 thinks it's probably hometimez
[18:52] <Jo_> apparently no result :/
[18:52] <Jo_> conected a 9 V to the arduino...
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[19:00] <Jo_> the 9 volt was a total fail
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[19:00] <Lunar_Lander> evening
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[19:30] <storm_home> hi all
[19:33] <Vaizki> hi alt
[19:37] <_Paradigm> Jo_: Could you pastebin the exact code the Arduino is running right now, just to be sure?
[19:37] <edmoore> hi ves
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[20:59] <OZ1SKY_Brian> hi
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[21:15] <mbales__> why isnt there a weather balloon subreddit
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[21:23] <SpeedEvil> make one
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[21:27] <edmoore> mbales__, it's here
[21:28] <edmoore> we can do balloons
[21:28] <edmoore> and memes
[21:28] <edmoore> we have everything
[21:28] <mbales__> while that is true we have limited buffering compared to reddit
[21:29] <edmoore> given people's inability to read the wiki i doubt searchable thread history will improve things much
[21:29] <jcoxon> we have zeusbot
[21:30] <jcoxon> that said zeusbot's skills aren't particularly good
[21:30] <edmoore> hi i am n00bfacehead !!! where you buy ballon? do i needing permissions? jaja
[21:31] <mbales__> haha
[21:31] <mbales__> welcome to the internet
[21:32] <jcoxon> edmoore puts his slippers on and puffs at his pipe by the fireside
[21:32] <mbales__> tea and biscuits at the ready
[21:32] <edmoore> the idea of a pipe does hold a deep appeal to me
[21:32] <mbales__> no deer stalker cap?
[21:32] <edmoore> british
[21:33] <edmoore> we just buy them dead from a local butchers
[21:33] <mbales__> i just assume that most everyone in here is british, though i suppose if i werent so lazy as to look at GMT i would know better
[21:35] <mbales__> wait, the british or the deer?
[21:36] <edmoore> well i mean we tend not to stalk deer
[21:36] <mbales__> ah
[21:36] <edmoore> so much as outsource that bit and just buy the haunch
[21:36] <mbales__> that makes more sense then
[21:36] <edmoore> so i don;t have a suitable hat
[21:36] <edmoore> but maybe a velvet smoking jacket?
[21:36] <edmoore> could do that
[21:36] <mbales__> sir arthur conan doyle lied to me
[21:36] <mbales__> im pretty sure it says somewhere in there that all brits wear deer stalker hats and smoke pipes
[21:37] <edmoore> well the fact that that profile is instantly recgnisable as only one specific brit should tell you how prevelent they are
[21:37] <mbales__> hmmm touche
[21:37] <edmoore> i do now want one though
[21:37] <mbales__> to the haberdasher
[21:39] <edmoore> i'm actually watching When Harry Met Sally
[21:39] <edmoore> not v conan doyle
[21:39] <mbales__> never seen it
[21:39] <mbales__> though it is on the list of movies to eventually watch
[21:40] <edmoore> i'm enjoying it
[21:40] <edmoore> i have seen it before in theory but not in recollection practice
[21:42] <edmoore> i have had a pastrami sandwich at the deli in which she does her famous scene, according to the sign above my head as i ate the sandwich
[21:42] <edmoore> infact i took a photo of the sandwich
[21:42] <edmoore> and i'm going to share it with you
[21:42] <edmoore> because it was a really, really good sandwich
[21:43] <edmoore> https://www.flickr.com/photos/eroomde/8405881579/in/photostream/lightbox/
[21:46] <craag> mmmmmmm
[21:47] <ibanezmatt13> never heard of it, but gosh does it look good...
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[22:01] <LandoCal> Hey Guys, Im looking at doing some calculations of the environmental factors e.g (thermal) that my payload will experience. Does anybody have any tips or guides as how to start?
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[22:03] <SpeedEvil> LandoCal: what is your payload, to what altitude are you aiming it at
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[22:04] <ibanezmatt13> LandoCal this is a good vid about environmental testing for HAB presented at the conference by arko https://www.youtube.com/watch?v=7ybIkH_u4as
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[22:06] <LandoCal> Kind of looking within the range of 25km if that seems realistic. Thanks guys appreciate the interest.
[22:06] <LandoCal> I watched one of arko's videos a few weeks ago. Super interesting stuff!
[22:10] <SpeedEvil> 25km is quite achievable
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[22:27] <LandoCal> His video is very informative although actually starting off my calculations I am still at a bit of a stand-still. Anyone who has previously performed calculations for their HABs care to share how to get the ball rolling?
[22:28] <daveake> I just buy a foam ball from Hobbycraft, and don't bother with the maths
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[22:29] <SpeedEvil> In practice, if you've got a camera going, and some sort of case round it - it generally seems just fine.
[22:29] <SpeedEvil> Nobodies really had a concrete failure due to environment 'normally' unless the camera wasn't going at launch
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[22:37] <arko> woah neat, someone watched my talk :P
[22:37] <arko> LandoCal: what are you trying to do?
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[23:04] <OZ1SKY_Brian> gn
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[23:29] <paul_HAB-P1> Anybody played with shinysdr?
[23:29] <paul_HAB-P1> With a nooelec dongle..
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[23:33] <mbales__> cant say ive heard of it
[23:33] <mbales__> looks interesting though
[23:35] <Oddstr13> wiringpi.digitalRead takes 6.678s for a million reads
[23:36] <DL7AD> does anyone know some techinal details about PS-30 (photos)
[23:36] <Oddstr13> 7┬Ás for a read? isn't that bad
[23:38] <mbales__> yes:
[23:38] <mbales__> http://forum.arduino.cc/index.php?topic=160653.0
[23:38] <mfa298> Oddstr13: remember that the pi isn't a realtime os
[23:39] <Oddstr13> mfa298: debian / arch you mean
[23:39] <mfa298> also I think some of the calls to get the time are pretty slow
[23:39] <Vaizki> Oddstr13: doing realtime signal analysis with the Pi is a bad idea like I mentioned :)
[23:39] <Oddstr13> wiringpi.micros() takes 8.4s for 1mill
[23:40] <mfa298> Oddstr13: any normal OS, you could do something bare metal but at that point some microcontroller will be easier
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[23:40] <Vaizki> he's using it as a DSO/MSO/LA
[23:41] <Vaizki> I would recommend a real DSO and LA .. heartily..
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[23:41] <mfa298> just buy a saleae and/or rigol
[23:41] <Oddstr13> Vaizki: well, if I can't oversample enough to be able to analyze this signal, there's not really any point of it in the first place, as I'd like to send / receive with the Pi
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[23:42] <Vaizki> you can't synthesize the signal reliably with wiringpi :D
[23:42] <Vaizki> but look at how they made the Pi into a FM transmitter by messing with some clocks
[23:42] <Oddstr13> mfa298: well, shipping takes minimum a week usualy, and I wana play with this now :P
[23:42] <mfa298> depending on what the signal is you might be able to create it better with the hardware pwm channel
[23:43] <Oddstr13> Vaizki: tried that, it's HORRIBLY noisy
[23:43] <mfa298> but the docs aren't great and I'm not sure the libraries support all the modes for hardware pwm
[23:44] <Oddstr13> well, I could allways fall back to using an attiny or some such for the actual interface
[23:44] <Vaizki> i would...
[23:44] <Vaizki> doing RT on the Pi is a world of pain
[23:45] <Vaizki> at least with the BBB you have 2x PRUs that execute each instruction in 2ns if you want to hunker down with some assembler
[23:45] <Vaizki> easy to do timing when execution times of instructions are completely predictable
[23:45] <mfa298> if you knew what you're sampling you may be able to read something via a kernel module but that's not the easiest task and will be much easier if you know what you're looking for
[23:45] <Oddstr13> well, I'm not too familliar with C++, really, so if I can do it in Python on the Pi directly, I'd love that
[23:46] <Vaizki> mfa298: he wants to transmit
[23:46] <Oddstr13> mfa298: oh, the thing has been decoded before, and it has arduino code
[23:46] <mfa298> the only way to do stuff quickly on the pi from user space is direct memory mapping in C/C++
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[23:47] <Vaizki> and maybe iio but that's a bit messy too
[23:47] <mfa298> above it sounded like you wanted to decode and encode not just encode
[23:48] <Oddstr13> mfa298: well, would've been nice to be able to decode too, but honestly, the only thing I need is encode
[23:48] <mfa298> I wouln't expect python to be able to do anything quickly, unless maybe you had a C module doing most of the grunt work.
[23:49] <Vaizki> maybe you can use pi audio playback to send the bit sequences?
[23:49] <Vaizki> via a 433MHz transmitter module
[23:49] <Oddstr13> possibly
[23:50] <mfa298> from memory you can give the hardware pwm a bit pattern to use, but the docs for actually doing it were pretty sparse last time I looked.
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[00:00] --- Wed Jan 21 2015