highaltitude.log.20130730

[00:04] <fsphil> fsphil 1, gnuradio 0
[00:04] <fsphil> now just need to get gr-osmosdr to play nice
[00:16] Nick change: heathkid|2 -> heathkid
[00:17] <fsphil> muhahaha, it's alive
[00:20] <KT5TK_QRL> GR is a challenge
[00:21] <KT5TK_QRL> Usually GR : KT5TK == 1:0
[00:22] <KT5TK_QRL> well last time I beat GR, but I couldn't get gqrx working after that :(
[00:22] <KT5TK_QRL> segfault
[00:24] <fsphil> it all worked oddly well after I got gnuradio-3.7 installed
[00:24] <fsphil> gr-osmosdr just needed pointed at the gnuradio cmake files
[00:24] <fsphil> after that it was happy
[00:24] <fsphil> now have gqrx receiving an FM station
[00:25] <KT5TK_QRL> congrats
[00:27] <KT5TK_QRL> I tried this PyBOMBS thingy which corrupted some critical libraries
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[00:32] <fsphil> ah receiving the met sonde
[00:32] <fsphil> I thought the fcdp++ had a hole at 402mhz
[00:32] <fsphil> can see another sonde too
[00:34] <fsphil> it's falling, too late to track that one
[00:35] <fsphil> hey just realised the old FCD couldn't receive these at all with the colienar
[00:35] <fsphil> the noise from TETRA was overloading it
[00:35] <fsphil> no such problem with the fcd++
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[06:02] <ibanezmatt13> Guten morgen
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[06:40] <natrium42> Englisch, bitte!
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[06:42] <arko> ????? ??????
[06:42] <natrium42> Hallo Herr arko, wie geht es Ihnen?
[06:42] <arko> Ich bin gut?
[06:43] <arko> und du?
[06:43] <arko> \o/ ich kans nicht sprekin' ze deutch
[06:43] <arko> ich liebe waffles!
[06:43] <daveake> mmmwaffles
[06:44] <natrium42> Warum duzen Sie mich, sehr geehrter Herr arko?
[06:44] <arko> was?
[06:44] <natrium42> daveake ist mein Bruder von einen andren Mutter
[06:44] <arko> ich bin unable on understand
[06:45] <arko> wow
[06:45] <cde> fsphil: afaik until recently gqrx only support 3.6
[06:45] <daveake> Ich brauche mehr Koffein
[06:45] <arko> daveake ist mien hund?
[06:45] <arko> and/or "homie"
[06:46] <arko> daveake: und ich
[06:46] <arko> ich mus gen zum schlapfen?
[06:46] <arko> sleep or however it's spelled
[06:46] <natrium42> arko: mein Kumpel
[06:46] <arko> ich bin too damn lazy to google translate
[06:47] <arko> natrium42: du komme zum ukhas 2013 uber ales elite 1337 conference?
[06:47] <daveake> http://www.youtube.com/watch?v=aiVOG199X2c
[06:47] <natrium42> when is it, arko?
[06:48] <arko> http://ukhas.org.uk/general:ukhasconference2013
[06:48] <arko> sept 7
[06:49] <natrium42> tempting :)
[06:50] <natrium42> is dan bowen coming?
[06:50] <arko> vOv dunno
[06:50] <daveake> Don't think so; he's not on the list
[06:51] <natrium42> he lives close to me now
[06:51] <arko> is he the one working for google?
[06:52] <Darkside> shhhh
[06:52] <Darkside> >_>
[06:53] <natrium42> :F
[06:53] <arko> chicken fingers
[06:53] <natrium42> in a way, we all work for google
[06:53] <arko> is what im eating at the moment
[06:53] <arko> dude
[06:53] <arko> i googled this chicken finger place
[06:53] <arko> got it delivered
[06:54] <arko> checking my phone, google now was telling me its 12 minutes away with traffic
[06:54] <arko> i stopped google now
[06:54] <arko> wayyyy creepy
[06:54] <Darkside> google now is very creepy
[06:54] <arko> s/ow/sa/
[06:55] <Darkside> haha
[06:55] <Darkside> no regexbot in here
[06:55] <arko> yar
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[06:58] <Reactive> hi guys - quick q: will the funcube dongle work well for balloon telemetry for a novice in radio?
[06:58] <Reactive> i just cant seem to find a decent radio within budget otherwise
[06:59] <cde> arko: resistance is futile
[07:01] <Darkside> Reactive: funcube dongle pro pluses are excellent
[07:01] <Darkside> highly recommended
[07:01] <Reactive> does it run on the 70cm band?
[07:01] <Darkside> yes
[07:02] <Darkside> the fcd pro pluses work from about 150KHz up to 1.5GHz
[07:02] <Darkside> so they're a pretty neat bit of kit to have in gneral
[07:02] <Darkside> general
[07:02] <Reactive> Darkside: after we spoke last night I was on a mission to find a radio, but couldn't get anything decent under 400 pounds
[07:02] <Darkside> you can listen to lots of stuff with them
[07:02] <Darkside> yeah, get a FCD++ then
[07:02] <Darkside> they are very nice
[07:02] <Reactive> and they're mobile which is great, right?
[07:02] <Darkside> i have one
[07:02] <Darkside> yeah, and tiny
[07:02] <Reactive> ++ ?
[07:02] <Reactive> whats the diff?
[07:02] <Darkside> just my name for them
[07:02] <Darkside> so there was the original funcube dongle pro
[07:02] <Darkside> which i called the FCD
[07:02] <Reactive> oh heh
[07:02] <Darkside> then theres the pro plus
[07:02] <Reactive> alright so i'll order it
[07:02] <Darkside> which is a FCD++
[07:03] <Reactive> cool
[07:03] <Darkside> but yeah, trhey are great
[07:03] <Reactive> now im getting excited
[07:03] <Darkside> just be aware they have a SMA socket
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[07:03] <Darkside> so you'll need adaptors to whatever antenna you use
[07:03] <Darkside> but they're easy to come by
[07:10] <daveake> Darkside What s/w do you use with your ++?
[07:10] <daveake> I use HDSDR with the --
[07:11] <Darkside> on mac, GQRX
[07:11] <Darkside> on windows, SDR Console
[07:11] <daveake> ok ta
[07:11] <Darkside> because SDR Console is so goddamna wesome
[07:11] <Darkside> http://v2.sdr-radio.com/
[07:11] <Darkside> seriously
[07:11] <Darkside> that software is the shit
[07:11] <daveake> cheers I'll check it out
[07:12] <daveake> ooo client-server
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[07:14] <Darkside> daveake: yep
[07:15] <Darkside> its really cool
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[07:20] <Darkside> its what Upu should have running at his place
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[07:27] <UpuWork> oh I tried that software
[07:27] <UpuWork> its properly complex
[07:27] <Darkside> its awesome
[07:27] <UpuWork> couldn't work it out in my attention span
[07:27] <UpuWork> i.e 5 mins
[07:27] <Darkside> you shoudl run the server at home
[07:27] <Darkside> conencted up to your FCD
[07:27] <UpuWork> FCD's
[07:27] <UpuWork> I have 2
[07:27] <Darkside> well have it hooked up to one of them
[07:27] <UpuWork> hmm I'll give it another go
[07:27] <Darkside> though you can have multiple radios
[07:28] <Darkside> then you can connect to the FCD remotely
[07:28] <Darkside> or other people can
[07:28] <Darkside> and control frequency, etc
[07:28] <UpuWork> interesting
[07:28] <UpuWork> ok I'll take a look when I get a free moment
[07:29] <Darkside> cool
[07:29] <Darkside> set up the server, then i can connect from australia :P
[07:29] <Darkside> and track balloons!
[07:29] <UpuWork> lol
[07:29] <daveake> lol
[07:29] <daveake> Working here now :)
[07:29] <G0TDJ_Steve> Hi Guys
[07:29] <daveake> So not that tricky
[07:30] <UpuWork> I really like SDRSharp
[07:30] <UpuWork> Morning Steve
[07:30] <Darkside> UpuWork: sdr console is prettier
[07:30] <G0TDJ_Steve> Good Morning Tony
[07:30] <UpuWork> I've decided
[07:30] <Darkside> and has multiple vfos and stuff
[07:30] <UpuWork> I don't like Tony
[07:30] <Darkside> and it does work with rtlsdrs and the like
[07:30] <G0TDJ_Steve> What do you prefer?
[07:30] <UpuWork> Call me Upu :)
[07:30] <UpuWork> or Anthony
[07:30] <UpuWork> :)
[07:30] <G0TDJ_Steve> Fair enough :-)
[07:31] <UpuWork> ok ok sold I'll try it again
[07:31] Action: G0TDJ_Steve thinks, must dig out his RTL dongle
[07:32] <G0TDJ_Steve> Darkside: Quick question, Can more than one person use remotely at a time?
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[07:35] <Darkside> G0TDJ_Steve: hrm
[07:35] <Darkside> not sure about that
[07:35] <G0TDJ_Steve> OK Just curious
[07:36] <G0TDJ_Steve> I have heard of SDRs being able to receive multiple freqs at the same time.
[07:36] <Darkside> yes, you can do that with sdr-radio
[07:36] <Darkside> if they are within the receive bandwidth of the SDR
[07:36] <Darkside> so for example, with a RTLSDR, you would be able to receive 434.075 and 434.650 ismultaneously
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[07:37] <G0TDJ_Steve> I@ll have a look at the docs later
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[08:02] <DL7AD> good morning
[08:02] <G0TDJ_Steve> Hi
[08:03] <DL7AD> can somebody add KT5TK-4 into spacenear.us ?
[08:03] <DL7AD> new balloon just launched
[08:04] <G0TDJ_Steve> I think fsphil did that last time it was required
[08:05] <G0TDJ_Steve> DL7AD: Is it APRS enabled?
[08:06] <DL7AD> yes
[08:07] <G0TDJ_Steve> Found it on aprs.fi
[08:07] <zamabe> holy shit that's an awesome site
[08:13] <G0TDJ_Steve> I hope the weather is better over there than it is here. It's been muggy heat for days and now it's pouring with rain.
[08:14] <UpuWork> adding it DL7AD
[08:14] <UpuWork> done should be on there now
[08:15] <G0TDJ_Steve> Got it
[08:16] <DL7AD> UpuWork thx
[08:17] <G0TDJ_Steve> UpuWork: Does Tracker draw data from APRS in this case?
[08:17] <UpuWork> yes the aprs.fi API
[08:17] <G0TDJ_Steve> Neat
[08:24] <fsphil> cde: it did, but the update to 3.7 happened before fcd++ support was added
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[08:29] <mfa298> G0TDJ_Steve: reading a bit of scrollback, with sdr-radio there is a seperate server process you can run that might allow multiple people to use the sdr at the same time
[08:29] <G0TDJ_Steve> OK mfa298 It does seem likely that it's possible
[08:33] <fsphil> mfa298: your spec worked nicely, ta. made a few tweaks
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[08:35] <fsphil> I don't like the way cmake uses to specify the install prefix
[08:36] <KT5TK> More info about our balloon launch: http://kt5tk.wordpress.com/wp-admin/post.php?post=459&action=edit&message=1
[08:37] <KT5TK> Sorry: http://kt5tk.wordpress.com/
[08:37] <mfa298> ah usful. I shall have to go play, first job is probably to fc19 the netbook.
[08:39] <fsphil> just doing it on my f17 laptop
[08:39] <fsphil> I'll throw the new spec up
[08:40] <fsphil> http://pastebin.com/E5LWJEuz
[08:41] <fsphil> it doesn't really have a version number so I kept 0.1
[08:41] <fsphil> even though it's the latest git revision
[08:44] <mfa298> that's the problem with so much stuff in git - so few version numbers
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[08:45] <fsphil> yea agreed
[08:45] <fsphil> awwww... http://urania.udea.edu.co/sitios/facom/press.php?_inicomp=3&_numcomp=1&#
[08:45] <mfa298> are you using gnuradio 3.7 from source ?
[08:46] <fsphil> I updated the spec file to use it
[08:46] <fsphil> built an rpm for it
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[08:49] <mfa298> is that spec shareable - might make life easier to compile 3.7 for 18/19
[08:50] <fsphil> yea one sec
[08:50] <fsphil> I've just done it on f17 and f19, works fine
[08:52] <fsphil> http://www.sanslogic.co.uk/gnuradio.spec
[08:54] <mfa298> cheers, I shall have a play a bit later.
[08:55] <fsphil> so all that needs packaging now is gr-osmosdr and gqrx
[08:55] <fsphil> oh and rtl-sdr ideally
[08:59] <DL7AD> okay nearly got it to float :D
[09:02] <KT5TK> Pretty sure the black trash bag will not survive the morning sun..
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[09:03] <mfa298> then we just need a ukhas repositry :D
[09:04] <LeoBodnar> This is better than sleeping!
[09:04] <mfa298> although I'm not sure there's much call for fedora packages apart from us
[09:05] <fsphil> there are still a few fedora users, despite gnome 3 :)
[09:06] <LeoBodnar> It might just bleed excess helium via pores and stay afloat until sunset
[09:07] <LeoBodnar> Trash bags are quite trash.
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[09:07] <LeoBodnar> Bin bags are quit rubbish (BE)
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[09:08] <KT5TK> Let's see. I didn't even expect it to go that high
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[09:09] <LeoBodnar> Get local newschannel to cover it :)
[09:09] <daveake> KT5TK Do you know why the altitude curve on spacenear shows discrete steps?
[09:10] <KT5TK> Not sure, I believe the script uses the approximate altitude I transmit in the telemetry record as backup
[09:11] <KT5TK> That is rounded to 1000 ft
[09:11] <daveake> ah ok
[09:11] <LeoBodnar> daveake: It did the same for B-8 http://leobodnar.com/balloons/B-8/1.png it's not very clear though from the scale
[09:12] <LeoBodnar> I have been collecting GPS readings at equal intervals and sending them later in a data burst
[09:12] <daveake> Well current alt is 5752.7 metres which is 18,874 feet, so it's not the multiple thing
[09:12] <LeoBodnar> Altitude came up as steps :/
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[09:12] <LeoBodnar> Maybe altitude gets plotted not from the data in the packet but from when it has been actually received?
[09:13] <KT5TK> I also send a position only every 2 minutes
[09:13] <daveake> That would match what you saw, yes
[09:15] <LeoBodnar> Position points obviously don't have this problem as they are mapped in X-Y space
[09:15] <daveake> indeed
[09:16] <LeoBodnar> Are you chasing it KT5TK ? :)
[09:16] <KT5TK> Depends where it comes down. DL7AD is commited to get it back :)
[09:18] <LeoBodnar> Yes, get it back and reuse it. PECAN can be used again as well.
[09:19] <KT5TK> I think it was a recycling bag 8)
[09:20] <DL7AD> hm
[09:21] <DL7AD> :D
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[09:22] <KT5TK> I'm running out of MAX-6es. That's why I attached a cheap Chinese Sirf GPS. I was sure we didn't reach 60 kft
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[10:25] <HixWork> balloon-news map. Why?
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[10:27] <mfa298> a similar question was asked yesterday
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[10:29] <ibanezmatt13> Morning :)
[10:30] <mfa298> morning? it's almost afternoon :D
[10:31] <ibanezmatt13> still morning though :)
[10:31] <ibanezmatt13> How should chase cars be setup to display their position on spacenear.us? Do you upload GPS information from the laptop in the car or something?
[10:31] Action: mfa298 wonders where the morning went :S
[10:31] <mfa298> there are a variety of chase car apps that upload position
[10:32] <ibanezmatt13> to Habitat?
[10:32] <daveake> Yes
[10:32] <mfa298> or if you plug a gps into your pc with dl-fldigi that can upload position as well (but not on windows)
[10:32] <ibanezmatt13> Excellent, any in particular?
[10:32] <daveake> You just need a phone or tablet or PC with GPS receiver and 3G, and suitable s/w
[10:32] <ibanezmatt13> s/w?
[10:32] <daveake> software
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[10:33] <ibanezmatt13> ah. Is there a section on this on the Wiki?
[10:33] Action: mfa298 waits for zeusbot to say http://ukhas.org.uk/general:chase_car_trackers
[10:33] <ibanezmatt13> ah right, thanks :)
[10:33] <mfa298> although that's missing one of the android apps
[10:34] <mfa298> ping mattbrejza is there any reason not to put your app on the wiki page ?
[10:34] <ibanezmatt13> For the one that runs on Windows, will I need an external GPS or is there one built in to laptops these days?
[10:35] <ibanezmatt13> Oh, there's not one that runs on Windows
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[10:35] <ibanezmatt13> I'll just use my Dad's Iphone
[10:36] <HixWork> ibanezmatt13, you can run linux as a virtual machine and then dl-fldigi can upload its location from a GPS
[10:36] <mfa298> if you want a windows phone app you'll have to write it yourself (I'm not sure anyone else has a windows phone)
[10:36] <HixWork> or you could boot from a usb stick
[10:36] <x-f> mfa298, this one? - http://ukhas.org.uk/projects:hab_modem
[10:37] <ibanezmatt13> I think I'll probably just stick to the iphone app and the android as a backup.
[10:37] <mfa298> x-f: I should have known it was on the wiki. In that case I might add a link to it from the chasecar apps page
[10:37] <ibanezmatt13> Will I have to create a payload file for the chase car?
[10:37] <daveake> no
[10:38] <HixWork> Thinking about this, would it be a big deal to create something for the chase computer to take NMEA and parse it before uploading to habitat?
[10:38] <ibanezmatt13> that's what I was thinking HixWork
[10:38] <mfa298> ibanezmatt13: the one x-f just linked is android and will also decode rtty at 50/300 bd
[10:38] <daveake> No, that's what these apps do
[10:38] <daveake> I have one on my car PC. Just parses the NMEA then builds a URL to post to habitat
[10:39] <HixWork> I'm thinking just a simple program with no gui that could run on the lowliest netbook
[10:39] <daveake> Yes, it's not hard
[10:39] <HixWork> hmm. this could give me a project for my python learnings. Do habitat have docs on how to enter the data?
[10:40] <daveake> Ask in #habhub, or ask someone who's done it
[10:40] <daveake> <cough>
[10:40] <HixWork> good call. keep forgettting #nabitat is there
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[10:40] <HixWork> heh - daveake do you have docs?
[10:41] <daveake> hah no :)
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[10:41] <mfa298> HixWork: just install linux on your lowliest of netbooks and use dl-fldigi - that's what I've done.
[10:41] <daveake> I had some source from someone else's and figured it out from that
[10:41] <chrisstubbsW> HixWork: http://habitat.readthedocs.org/en/latest/habitat/habitat/habitat/habitat.views.flight.html was churned up the other day
[10:41] <chrisstubbsW> not idea what it has on it, blocked at work :(
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[10:42] <HixWork> cheers chrisstubbsW and good thinking daveake I'll ask around to see if I can nose at some source
[10:42] <HixWork> chrisstubbsW, not got a SOCKS?
[10:43] <HixWork> mfa298, Ideally I want to run Win on the chase as I have memorymap with 1:25k OS
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[10:45] <fsphil> dynamic port forwarding in ssh is amazing for silly work firewalls
[10:47] <HixWork> bye bye web blocker
[10:49] <fsphil> and for stopping O2 modify traffic
[10:49] <fsphil> modifying*
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[10:58] <zamabe> Now they'll just do it anyway to make your tunnels time out
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[11:21] <HixWork> m]
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[11:31] <Laurenceb> how do i find the location of a library in eagle?
[11:31] <Laurenceb> i cant find the library on the file system
[11:31] <Laurenceb> but it is there in eagle
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[11:33] <Laurenceb> #join #cadsoft
[11:39] <Laurenceb> helloooo
[11:39] <Laurenceb> anyone?
[11:40] <HixWork> do info on the part, copy name of library then search drive for that - works for me
[11:40] <HixWork> i.e 74xx-little-de*
[11:40] <HixWork> churns up where it is
[11:40] <Laurenceb> thats going to take forever
[11:40] <HixWork> technically thats not true :)
[11:41] <Laurenceb> technically...
[11:41] <HixWork> try open from main window choose library you are interested in then save as, should default to its location?
[11:42] <Laurenceb> oh, thats one plan
[11:42] <HixWork> sod that, select the library in the main window - gives you the location in bottom teft
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[11:44] <HixWork> worked Laurenceb?
[11:44] <Laurenceb> no
[11:45] <Laurenceb> now i cant see my library in the control panel
[11:45] <Laurenceb> but i can add the parts to the pcb..
[11:46] <Laurenceb> control panel only shows the main libraries folder
[11:46] <Laurenceb> i know where that is
[11:46] <Laurenceb> i cant find my custom libraries folder
[11:46] <Laurenceb> which is somewhere else on the system,
[11:47] <Laurenceb> id rather not search the entire hard drive
[11:47] <HixWork> surely it can't take that long to searc for *.lbr
[11:47] <Laurenceb> i guess...
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[11:48] <HixWork> my pc just took ~10secs
[11:48] <HixWork> and its full of work crap
[11:49] <HixWork> well, I say work crap, its nostly crap and not a lot of work
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[12:09] <LeoBodnar> cutting holes in Agilent scope
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[12:33] <cn8dn> h
[12:43] <Darkside> i
[12:44] <daveake> X
[12:45] <daveake> D
[12:49] <HixWork> O
[12:50] <x-f> k
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[13:20] <rogerponts> Hi, someone know where to buy a cheap barometer ?
[13:22] <Darkside> dunno about cheap
[13:22] <Darkside> i've used BMP085's before
[13:22] <Darkside> but they aren't exactly chap
[13:22] <Darkside> cheap*
[13:23] <rogerponts> a light HAB which altitude could reach ?
[13:23] <Darkside> >
[13:23] <Darkside> ?
[13:23] <Darkside> are you asking how high a HAB could reach?
[13:24] <rogerponts> yes, more or less
[13:24] <Darkside> well
[13:24] <Darkside> depends on paylaod weight, balloon size
[13:24] <HixWork> rogerponts, http://ukhas.org.uk/guides:balloon_data should give you an overview
[13:24] <Darkside> the current record is 44.3km alt
[13:24] <Darkside> but you typically get around 30-35km
[13:25] <rogerponts> Ok I say it because I found a cheap barometer (http://www.adafruit.com/products/391#Technical%20Details) but the limit is 9000 m
[13:25] <Darkside> ye
[13:25] <Darkside> yes
[13:25] <Darkside> which is why we generally use GPS
[13:26] <Darkside> the BMP085 will measure pressure far above 9km btw
[13:26] <Darkside> but the altitude you calculate from it isn't particularly accurate at that point
[13:26] <Darkside> when i flew one, it died at 37km
[13:28] <rogerponts> no I only want it to calculate the pressure, the GPS what I will use is this: http://ava.upuaut.net/store/index.php?route=product/product&path=59_60&product_id=68
[13:28] <Darkside> right
[13:28] <Darkside> well teh BPM085 will b fine
[13:28] <Darkside> its ok up to 37km, as i said
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[13:32] <rogerponts> To calculate the pressure outside of the payload, the BMP085 have to be outside or could be inside the payload ?
[13:32] <Darkside> could be inside
[13:32] <Darkside> unless your payload is completely airtight, it'll be fine
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[13:34] <rogerponts> ok
[13:35] <rogerponts> Because what I want is put the BMP085 measuring the pressure, and the temperature inside, and put this temperature and humidity sensor outside (http://www.adafruit.com/products/385)
[13:41] <HixWork> I want this "Rucksac" http://goo.gl/TOxcmJ
[13:47] <daveake> We'll have to get the chase car graphic changed specially for you
[13:47] <UpuWork> http://ukhas.org.uk/guides:payloadantenna
[13:47] <UpuWork> noddy guide
[13:47] <UpuWork> p.s I found my wire
[13:48] <daveake> good, and good :)
[13:48] <HixWork> oh, that would be an awesome way to chase daveake
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[14:01] <number10> i doubt if he would be able to out run you - even with his motors ;)
[14:03] <daveake> Sentence needed punctuation :)
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[14:07] <HixWork> heh
[14:08] <chrisstubbsW> UpuWork: whats all this about my fantastic guide?
[14:08] <UpuWork> hmm ?
[14:08] <UpuWork> I amended it
[14:08] <UpuWork> with pretty pics
[14:09] <chrisstubbsW> Oo :)
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[14:09] <ibanezmatt13> ping UpuWork
[14:09] <UpuWork> I chopped the maths
[14:09] <chrisstubbsW> Ah cool, nice work :)
[14:09] <UpuWork> ibanezmatt13 http://ukhas.org.uk/guides:payloadantenna
[14:09] <UpuWork> for you
[14:10] <ibanezmatt13> Thanks UpuWork. Funny you should give me that link...
[14:10] <chrisstubbsW> picking the braid apart is wayyyy more fun
[14:10] <ibanezmatt13> My Dad and I have come up with a nice box design but we need to make the part with the black insulation on a lot shorter so we're gonna have a go from scratch with those spares
[14:10] <fsphil> very relaxing
[14:10] <fsphil> no wait, not relaxing
[14:11] <fsphil> infuriating
[14:11] <daveake> fun or hard work?
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[14:11] <daveake> annoying
[14:11] <daveake> way above my "can I be arsed?" threshold
[14:11] <fsphil> indeed
[14:12] <ibanezmatt13> Would now be ok to upload some test telemetry to Habhub?
[14:12] <fsphil> nobody's flying
[14:12] <fsphil> fire away
[14:12] <ibanezmatt13> great, hopefully it'll work
[14:13] <HixWork> you need girls for that, I remember at school they would spend hours doing the reverse
[14:13] <HixWork> for fun?!?!
[14:14] <ibanezmatt13> got a nice line on waterfall
[14:14] <ibanezmatt13> woo, success
[14:15] Action: fsphil has got the effects of lightning on the waterfall
[14:15] <ibanezmatt13> interesting
[14:16] <ibanezmatt13> By the way, I'm slightly beginning to think that my code is wrong. It probably isn't but because it's working something must be wrong :)
[14:16] <ibanezmatt13> Like when it checks for flight mode status, is my code saying it's enabled no matter what the ACK is.... Hmm
[14:17] <UpuWork> yeah you want to fix that
[14:17] <ibanezmatt13> well it may not be, I'm just curious
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[14:18] <daveake> "I'm slightly beginning to think that my code is wrong" ... you have so much to learn :-). When you're a Pro you'll start with "I know my code is wrong I just need to find out where"
[14:19] <fsphil> "Why is this code working?!"
[14:19] <fsphil> love that one
[14:19] <daveake> lol
[14:19] <ibanezmatt13> Exactly, it's called being positively negative :)
[14:20] <ibanezmatt13> daveake: On the Pi, would you reckon that 32GB card be enough for say 4-5 hours 1080p video? I can't seem to find anywhere which gives me that info
[14:20] <ibanezmatt13> including the OS
[14:20] <mfa298> Why is my code working? - That sounds like the sort of code written in the early hours of the morning after the trip to the pub!
[14:21] <daveake> ibanezmatt13 Depends
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[14:21] <daveake> Does that help?
[14:21] <daveake> It's around 6GB/hour and you need 4GB for the OS etc
[14:22] <fsphil> you could fit 4-5 hours of 1080p video on a 1Gb card if it was just a black screen
[14:22] <daveake> which for some of the time, it is :)
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[14:22] <ibanezmatt13> should be ok then just about. If it ran out of space, would it automatically stop recording? I don't want it to overwrite my OS so I can't ever get into it
[14:22] <fsphil> a downward facing camera would use more disk space than one pointing up
[14:22] <fsphil> simply because of there being more detail and movement
[14:23] <ibanezmatt13> Shouldn't be more than 6GB/hour I would have thought for a side mount
[14:24] <ibanezmatt13> daveake: 6GB/hour at 1080p with the default bit rate in raspivid?
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[14:27] <ibanezmatt13> Looking at the code, everything for setting flight mode looks ok. I always set gps_set_success to false just before checking it. I just don't know if I can trust it :) I'm so sceptical, lol
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[14:31] <fsphil> welcome to programming
[14:31] <fsphil> trust nothing
[14:31] <ibanezmatt13> Major problem... Every time the NTX2 starts to TX, the frequency shifts and then when it stops, it's back to normal
[14:31] <ibanezmatt13> :O
[14:32] <ibanezmatt13> I think I know why
[14:33] <ibanezmatt13> Pi keeps turning on and off. Most probably because the only battery I could find was a PP3. The PP3 is now pretty warm
[14:34] <ibanezmatt13> That's still unusual though; the multimeter says that the voltage is still 8.2v on the battery
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[14:34] <daveake> A PP3 has just enough energy to make your tongue tingle
[14:34] <fsphil> they're horrible batteries
[14:34] <fsphil> useless for just about anything
[14:35] <ibanezmatt13> That's the issue then. Phew, thought I'd botched it up for a minute there
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[14:35] <fsphil> they're all talk (voltage) and no action (current)
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[14:36] <daveake> ibanezmatt13 If the NTX2 frequency changes it's one of: processor supply voltage; temperature; NTX2 supply voltage. In that order.
[14:36] <ibanezmatt13> I don't want to use my rechargables anymore. The terminals connected through a screwdriver and I literally saw smoke coming from them and they were very hot
[14:36] <daveake> I foresee a career in emitting magic blue smoke
[14:37] <ibanezmatt13> Looks like it's the first one. Thanks. Also, I found out from Upu's schematic that the DS18B20 on the Pi n Chips is connected to pin 12, I thought it was pin 7 :P
[14:37] <fsphil> Harry Shorter
[14:38] <daveake> I don't know if it ever changed, but the Pi kernel only works/worked with on-wire on GPIO4
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[14:38] <ibanezmatt13> Well that's confusing
[14:38] <HixWork> someone shorted 4 car batteries on a test rig here last week.
[14:38] <LazyLeopard> Xrick
[14:39] <HixWork> hi Babs_ US based today?
[14:39] <ibanezmatt13> So the singed batteries that cooled, are they ok to use or not?
[14:39] <Babs_> Hey HixWork - yes, the deed was done last Thursday and I am no longer a free man
[14:40] <HixWork> my sincerest commiserations ;p
[14:40] <daveake> ooer, congrats
[14:40] <daveake> lol
[14:40] <Babs_> Upside : Arko has some else in the same time zone
[14:40] <daveake> one of those two
[14:40] <fsphil> lol
[14:40] <Babs_> Thanks guys - was a fun day
[14:40] <fsphil> congrats
[14:40] <Babs_> I brought my arduino cookbook on honeymoon
[14:40] <Babs_> Hab never sleeps
[14:41] <HixWork> smooth
[14:41] <fsphil> launch a pico from there
[14:41] <HixWork> US Pico = <15Kg btw Babs_
[14:41] <daveake> HABeymoon
[14:41] <Babs_> Fsphil - just need the tracker, balloon and helium and I am there
[14:42] <fsphil> "You may now release the balloon"
[14:42] <HixWork> with this He I thee fill.
[14:42] <Babs_> Cycling around napa - good fun
[14:42] <HixWork> oh erm that doens't sound right
[14:43] <HixWork> Is that a bit of a novelty over there? A cycle.
[14:43] <fsphil> HAB people are good at tying the knot
[14:43] <Babs_> It's good cycling actually - am surprised
[14:43] <daveake> haha
[14:44] <Babs_> Although I only have 1 day to use as a data point
[14:44] <daveake> and at using duct tape
[14:44] <HixWork> ibanezmatt13, I reckon they should be ok. probably past their best in terms of storage, but prob safe to use
[14:44] <Babs_> We went from healdsburg to bodega bay yesterday
[14:45] <Babs_> Which is awesome as, following my visit to Astoria in Oregon in 2007
[14:45] <Babs_> I have now completed my visits to all of the locations in the Goonies movie
[14:45] <ibanezmatt13> thanks HixWork, will risk it :)
[14:46] <HixWork> I would like to visit Jellystone Park
[14:47] <HixWork> I know, I know. but it's what it is really called we all know
[14:48] <Babs_> Met an RF engineer in wine tasting yesterday
[14:48] <Babs_> We exchanged call signs
[14:48] <Babs_> Wife despaired
[14:49] <HixWork> ha ha. I'll bet
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[14:50] <Babs_> I saw a windmill with all but one sail removed
[14:50] <Babs_> The weight of the sail had pulled it to the bottom
[14:51] <Babs_> And an antenna had been installed pointing upwards from it
[14:51] <HixWork> is this some inspiration for StabilotronII
[14:51] <Babs_> I didn't stop.
[14:51] <Babs_> Stabilotron II is now firmly designed in my head
[14:52] <Babs_> Going to glue back together stabilotron I for the Conf
[14:52] <Babs_> And trawl everyone for ideas before I start the build
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[14:52] <Babs_> Looking forward to meeting everyone
[14:52] <Babs_> Do people call everyone by their real names or nicks?
[14:52] <HixWork> Speaking of the conf. Is there a crazy badge plan again?
[14:53] <HixWork> I think Nicks are better Babs_
[14:53] <Babs_> Ibanezmatt13 could become quite difficult to say after 4 stellas
[14:53] <Babs_> I think so too HixWork
[14:53] <Babs_> "I am new, my name is Babs"
[14:53] <HixWork> babsunderscoreundescore - is that a bouble-barreled surname
[14:53] <Babs_> Like 1st day at school over again
[14:54] <Babs_> I have no clue what generates the _ but I assume it is another example of my ignorance being fairly frustrating for everyone ?
[14:54] Nick change: HixWork -> Hix
[14:55] Nick change: Hix -> HicWork
[14:55] Nick change: HicWork -> HixWork
[14:55] <Babs_> Talking of which, has Willdude1234566789 got his beagle bone working yet?
[14:55] <UpuWork> he's getting there
[14:55] <UpuWork> he's on holiday alledgedly
[14:55] <HixWork> f&*%^
[14:55] <HixWork> sorry
[14:55] Action: UpuWork points at Willdude123
[14:55] <Babs_> Hey UpuWork
[14:55] <UpuWork> hey Babs
[14:57] <HixWork> Babs_, " /msg nickserv ghost name password" should turn you back into Babs
[14:58] <HixWork> like Mr.Ben but with an online shop instead of a physical premises
[15:02] <HixWork> import Math
[15:02] <HixWork> bugger. sorry.
[15:02] <HixWork> export math
[15:02] <Willdude123> Oh hi
[15:02] <fsphil> this doesn't add up
[15:03] <Willdude123> UpuWork what do you mean allegedly
[15:03] <UpuWork> well you've been online more than you are normally
[15:03] <Willdude123> I don't think so.
[15:03] <Willdude123> What with school and stuff.
[15:04] <Willdude123> I'd have been on here a lot less
[15:04] <Willdude123> I'm having a great holiday, just waiting for everyone else to get changed for diner.
[15:04] <HixWork> people are divided on it fsphil
[15:05] <Willdude123> See the thing is when I'm talking to people I'm usually either sun bathing with a coke in one hand and a tablet in the other or sitting in the bar pondering the meaning of life.
[15:06] <Willdude123> Finally got mosh working
[15:06] <Willdude123> Except yeah. Crap connections will always be crap connections
[15:07] <Willdude123> It's not even loading Irssi over mosh smoothly.
[15:08] <Willdude123> UpuWork if you want I can piss off. :-)
[15:11] <Babs_> Has anyone on here ever used the EasyTransfer library?
[15:11] <Babs_> Don't need instruction (yet) , just want to know whether it is worth bothering with
[15:11] <Babs_> For arduino to arduino communications
[15:13] <HixWork> not even heard of it
[15:15] <HixWork> from what eroomde has told me, libraries are the devils own tool and I will end up in hell if I use them
[15:15] <HixWork> well, not quite, but nearly
[15:15] <Willdude123> Hah
[15:15] <Babs_> On the face of it it looks fairly simple and useful in terms of automatically doing checksums etc to check for transfer integrity
[15:15] <Willdude123> ping eroomde
[15:15] <HixWork> I believe he's away
[15:15] <HixWork> seen! eroomde
[15:16] <HixWork> figures
[15:17] <HixWork> Babs_, surely the crc16 used in the tracker would do the same?
[15:20] <Willdude123> With the arduino, is there a problem with using ss at 50 baud for the ntx2?
[15:21] <HixWork> ss as in software serial?
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[15:26] <Willdude123> yah
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[15:27] <HixWork> you should be using serial, why SS?
[15:28] <Willdude123> I mean on an uno for the ntx2
[15:28] <Willdude123> Instead of writing your own code, what's wrong with ss?
[15:28] <UpuWork> you don't use serial when using Arduino to drive an NTX2
[15:29] <HixWork> the NTX2 just requires a voltage divider to do space and mark
[15:29] <HixWork> there is no serial, that is the GPS
[15:29] <daveake> Well, technically, NTX2 RTTY *is* software serial output :)
[15:29] <HixWork> yeah but no but yeah but
[15:29] <daveake> lol
[15:29] <Willdude123> Yes, so why not use the ss library?
[15:29] <daveake> Done with a timer as god intended
[15:29] <HixWork> because there is no need to
[15:30] <daveake> But yes (aside from that) avoid SS
[15:30] <Willdude123> ok
[15:30] <gonzo_> and an interrupt. A'men
[15:30] <HixWork> it is the devils tool and you will end up in hell if you use it*
[15:30] <Willdude123> Is overheating much of an issue on payloads?
[15:30] <HixWork> *not really but close
[15:31] <Willdude123> The BBB overheats a lot
[15:31] <HixWork> Pi's apparently suffer
[15:31] <gonzo_> interrupts are there to purify the soul and the code
[15:31] <HixWork> ATMegas apparently not
[15:33] <Willdude123> Wow mosh is rea
[15:33] <Willdude123> ly good
[15:33] <Willdude123> I even managed to talk to a guy about life at mit in the process of setting it up.
[15:33] <HixWork> Willdude123, http://www.fourwalledcubicle.com/AVRArticles.php
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[15:36] <Willdude123> HixWork it might take a few minutes to load but I'll read it
[15:36] <Willdude123> Ok
[15:41] <cde> Willdude123: what kind of processing do you do to make it overheat?
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[15:43] <daveake> Pis dont' suffer. My very first Pi flight had a rather hot external linear (note that word) regulator and many batteries
[15:44] <daveake> With more sensible power arrangements there's no problem
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[15:54] <Willdude123> cde I guess being sshed into it might make a differemce
[15:54] <Willdude123> Also powering a wifi dongle.
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[16:01] <Willdude123> yeah
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[16:06] <cde> that makes sense. which model of wifi dongle?
[16:06] <cde> I just bought the one from adafruit, hope it doesn't have the problem
[16:06] <cde> although they recommend to use a 2A rated power supply, not a good sign
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[16:39] <ibanezmatt13> daveake: I've been trying to get the DS18B20 to work that is on the Pi n Chips board and I'm having no luck. I've pretty much used this code: http://learn.adafruit.com/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing/software and it fails here: device_folder = glob.glob(base_dir + '28*')[0] index out of range :/
[16:41] <daveake> Is the device actually recogised by the OS?
[16:43] <ibanezmatt13> Hang on, I've just realised I'm developing on a model B with no DS18B20 hooked up :P But, it still doesn't work on the model A now that I've added this code
[16:43] <ibanezmatt13> I can't really see the error on the Model A
[16:44] <daveake> Nothing to do with A or B
[16:44] <daveake> See http://webshed.org/wiki/RaspberryPI_DS1820
[16:44] <daveake> and check it's on GPIO4
[16:44] <ibanezmatt13> In Upu's schematic it said GPIO pin 12...
[16:44] <ibanezmatt13> Have you used that board before?
[16:45] <daveake> I don't remember pin numbers
[16:45] <daveake> It ONLY works on GPIO4
[16:45] <ibanezmatt13> Have you got it working on this Pi n chips board?
[16:45] <daveake> No
[16:46] <daveake> Is it on GPIO4?
[16:46] <ibanezmatt13> I think not
[16:46] <daveake> Well that'll be that then
[16:46] <ibanezmatt13> That's a shame, ah well. I'll save temperature for another date :)
[16:47] <daveake> [14:38] <daveake> I don't know if it ever changed, but the Pi kernel only works/worked with on-wire on GPIO4
[16:47] <daveake> I thought we did this earlier :)
[16:48] <daveake> So, hack and recompile the kernel
[16:48] <daveake> :)
[16:48] <daveake> Or hack the PCB
[16:48] <fsphil> there should be some kind of log.. on a website...
[16:48] <ibanezmatt13> Hacking usually makes things worse in my case
[16:48] <ibanezmatt13> Genius idea!
[16:49] <ibanezmatt13> But may not work :/
[16:49] <ibanezmatt13> Upu left some holes in the middle of the board for the GPIO pins including GPIO 4
[16:49] <ibanezmatt13> Maybe if I solder a wire from the DS18B20 to that hole???
[16:50] <daveake> and cut the existing track to that pin
[16:50] <ibanezmatt13> That may not be so easy, would that matter?
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[16:52] <daveake> scalpel
[16:52] <ibanezmatt13> Looking at the board, the whole idea looks impossible
[16:52] <daveake> it isn't
[16:52] <ibanezmatt13> I've just followed the track from the DS18B20 and it doesn't go to GPIO4, it goes to GPIO1 :(
[16:53] <daveake> cut the track
[16:53] <daveake> or cut the lead from the DS18B20, if that's easier
[16:53] <ibanezmatt13> I'm not that experienced in PCBs but what I've learnt recently about ground pours might make this difficult
[16:54] <ibanezmatt13> I may be wrong but it looks like cutting the track would cause an issue
[16:54] <daveake> they have nothing to do with it
[16:55] <daveake> There's a track from sensor to connector. Find a suitable point and cut the track. Then run a wire - solder to the lead on the chip and to the GPIO4 hole
[16:55] <ibanezmatt13> Ah so I have to cut the track in between the track lines without cutting the track lines themselves?
[16:55] <daveake> 5 mins tops
[16:55] <daveake> You cut the track between sensor and connector
[16:55] <daveake> the copper track
[16:55] <ibanezmatt13> I'm not quite sure how to cut the track. Do I need a drill bit or something like on stripboard?
[16:55] <daveake> Or just read the GPU temp and deduct 20 degrees
[16:56] <daveake> SCALPEL
[16:56] <daveake> I think I've said all I can say, most of it twice already
[16:56] <ibanezmatt13> Not got one, could find one somewhere
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[16:56] <ibanezmatt13> ok, I'll figure something out. Thanks
[16:58] <daveake> Oh just one thing I forgot - there's a 4k7 pullup and you need to leave that in circuit
[16:59] <daveake> So cut between that and GPIO1
[16:59] <ibanezmatt13> Just looking at that now. Where will I solder the wire on daveake? There's nowhere to solder it to
[16:59] <daveake> <daveake> There's a track from sensor to connector. Find a suitable point and cut the track. Then run a wire - solder to the lead on the chip and to the GPIO4 hole
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[17:00] <ibanezmatt13> On the chip? What about the 4k7?
[17:00] <daveake> That's connected to the chip
[17:01] <ibanezmatt13> Ah of course, so just a wire from sensor to GPIO after cutting the track keeping the resistor in
[17:01] <daveake> No you leave the resistor in circuit
[17:01] <daveake> Cut the track right next to GPIO1
[17:02] <daveake> Then solder a wire to the middle pin of the chip, or the resistor
[17:02] <daveake> and the other end goes to GPIO4
[17:02] <ibanezmatt13> The chip will be a lot easier to solder to
[17:02] <daveake> ALL you're doing is moving the sensor pin from GPIO1 to GPIO4
[17:02] <daveake> SMD resistor?
[17:03] <ibanezmatt13> Not sure what that is, it's a very small one :)
[17:03] <SpeedEvil> Entirely off-topic.
[17:03] <daveake> Of so yes sensor will be easier
[17:03] <ibanezmatt13> When you say cut the track, with the Scalpel do I have to keep the cut within the two track lines?
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[17:04] <SpeedEvil> Does anyone know where to get parametrically selectable - or even a catalog list - of ball bearings? I'm specifically looking for 1/2" ID bearings, shielded - as thin as possible - for use as router bearing guides.
[17:05] <daveake> The track is copper. You cut it. Try not to cut any other copper.
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[17:05] <SpeedEvil> or it will explode.
[17:05] <SpeedEvil> (Possibly not)
[17:06] <ibanezmatt13> Ok. So if I did cut outside the lines, would the connection to GND not mess everything up?
[17:07] <daveake> Not sure why you are struggling with this, and I'm not sure how else to explain. On a PCB the tracks are copper, surrounded by a lack of copper. You cut the copper. Doesn't matter if you cut the lack-of-copper.
[17:08] <daveake> Try not to cut further (into another track or into a fill)
[17:08] <ibanezmatt13> Ahhhhh, I see :)
[17:09] <ibanezmatt13> That make sense then, what an idiot. Thanks daveake :)
[17:09] <daveake> cool
[17:09] <daveake> one last thing
[17:09] <daveake> what I do is make 2 cuts say 1mm apart, then prise out the bit between
[17:09] <daveake> A single cut might still make contact if you don't cut right through
[17:10] <ibanezmatt13> good advice. I guess a stanley knife wouldn't do it?
[17:10] <daveake> sharp one yes, but it's a bit cumbersome
[17:11] <ibanezmatt13> Luckily there's pretty much nothing within close range of where I'd cut it. So, as long as I don't go deep, a lack of neatness may be ok
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[17:12] <daveake> It's a 2-layer board you'd have to go very deep!
[17:12] <ibanezmatt13> I guess I should use multistranded wire as opposed to single core?
[17:16] <daveake> It won't need to move, so use single core
[17:16] <ibanezmatt13> daveake: This wire will have to run underneath the board and backup the other side. It looks far to close to the other pins to solder a wire from the other side
[17:17] <daveake> You can solder to either side of the board, where the sensor pin goes
[17:18] <ibanezmatt13> So I could do it all on the bottom then. That would work I think
[17:29] <ibanezmatt13> daveake: My tracker code works on the Model B after developing the code on it but it doesn't work when I put it in the model A. Is this something to do with the startup folders on each model? In the model A I shoved a bash script in rc.local which worked great. On the B, rc.local doesn't seem to exist. So does that mean that I can't dev on the B?
[17:29] <daveake> It's not a A/B thing
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[17:31] <daveake> The A has less memory and no ethernet chip and 1 fewer USB. That's it. Just about only other difference between Pis is that the GPIO i2c pins swapped from one i2c channel to the other in one revision.
[17:31] <ibanezmatt13> Ah ok, I'll keep at it then
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[17:41] <ibanezmatt13> daveake: sorted it.
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[17:48] <ibanezmatt13> daveake: would it not matter if I just put the wire in and left the track to GPIO1? Wouldn't the data still be going into GPIO4 through the new wire?
[17:49] <daveake> Depends on what GPIO1 is doing. It would need to be an input
[17:49] <ibanezmatt13> GPIO1 is not being used at all
[17:50] <ibanezmatt13> So even though data is going to GPIO1, because I'm not calling it anywhere at all, would it still be ok?
[17:52] <daveake> If it's set as an output then you need to cut the track. You can test with a DMM or, take my advice, cut the damn track.
[17:52] <ibanezmatt13> I'll cut the damn track. I was just curious
[17:52] <ibanezmatt13> :)
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[17:53] <cde> that damn track. always giving trouble
[17:54] <ibanezmatt13> this trouble needs to be cut out
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[18:08] Action: bertrik wonders about the "go_chase" car in Leiden, Netherlands on spacenear.us
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[18:31] <Lunar_Lander> hello
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[19:30] <jcoxon> ping fsphil
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[19:52] <KT5TK_QRL> Trash bag was recovered.
[19:54] <mclane> Trashbag? what did you do with it? solar hot air balloon?
[19:54] <KT5TK_QRL> http://kt5tk.wordpress.com/
[19:55] <KT5TK_QRL> With Helium
[19:55] <Upu> KT5TK were you interested in the AMY ?
[19:56] <Upu> evening btw
[19:56] <KT5TK_QRL> Yes, sure
[19:56] <Upu> https://dl.dropboxusercontent.com/u/63720513/PDFS/AMY-6M-%20Hardware%20Integration%20Manual.pdf
[19:56] <Upu> https://dl.dropboxusercontent.com/u/63720513/PDFS/amy-6m_datasheet_gps.g6-hw-10052.pdf
[19:56] <Upu> got some coming
[19:56] <KT5TK_QRL> Nice! How many can I get?
[19:57] <Lunar_Lander> hello everyone
[19:57] <mclane> ah ok.
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[19:59] <Upu> 20
[19:59] <Upu> sample pack
[19:59] <Upu> normally the MOQ is 2000
[20:01] <Lunar_Lander> I was considering the Photodiode radiation sensor today and thinking about the 9 V power supply
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[20:01] <Lunar_Lander> take the hassle and use a stepup from 3.3V to 9V or use a 9 V block?
[20:04] <Lunar_Lander> hi mclane
[20:04] <mclane> hi Lunar_Lander
[20:05] <Lunar_Lander> mclane, I just said, when you were away, that I looked at this Photodiode radiation sensor http://www.elektronik-labor.de/Projekte/Alpha.html
[20:05] <Lunar_Lander> and I was wondering about the 9V
[20:05] <Lunar_Lander> using a stepup from 3.3V but only with pulsed power then obviously or make it simple and run a 9 V block
[20:06] <mclane> you want to put it on a balloon?
[20:06] <Lunar_Lander> yes
[20:07] <mclane> then it depends on your weight budget
[20:07] <Lunar_Lander> yea
[20:07] <Lunar_Lander> but the step-up will give a pulsed voltage, right?
[20:07] <mclane> a stepup might be some grams lighter
[20:07] <mclane> no
[20:08] <mclane> a good stepup should have marginal ripple
[20:08] <Lunar_Lander> ok
[20:08] <Lunar_Lander> was thinking about MC34063
[20:08] <mclane> but it may not be worth the hassle
[20:08] <Lunar_Lander> yea
[20:08] <mclane> for a few grams
[20:09] <mclane> this circuit is extremely sensitive in terms of emc
[20:10] <Lunar_Lander> yea I can imagine
[20:10] <mclane> I never got it to work well
[20:10] <Lunar_Lander> did you build it with the comparator like he did?
[20:10] <mclane> therefore we finally took a geiger tube
[20:10] <Lunar_Lander> yea
[20:11] <mclane> I took the Elektor version
[20:11] <mclane> http://www.elektor.de/products/kits-modules/kits/110538-71-improved-radiation-meter.1971856.lynkx
[20:13] <Lunar_Lander> ah ok
[20:17] <Lunar_Lander> low ESR caps and so on right?
[20:18] <mclane> yes
[20:19] <Lunar_Lander> funny thing was that a online tool got different values for the stepup than my own calculation using the datasheet formulas
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[20:21] <mclane> so what we flew on PYSY-2 is this: https://sites.google.com/site/diygeigercounter/
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[20:24] <Lunar_Lander> yea I know that
[20:24] <Lunar_Lander> I got the one from MightyOhm
[20:24] <mclane> might fly that again in 2-3 weeks
[20:25] <Lunar_Lander> cool
[20:26] <mclane> what about your electrometer?
[20:27] cyclops (5819678b@gateway/web/freenode/ip.88.25.103.139) joined #highaltitude.
[20:27] <cyclops> hi!
[20:28] <Steve_2E0VET> hi
[20:29] <Steve_2E0VET> anyone know if you can get sma plugs for rg58 cable
[20:29] <cyclops> Got permissions to launch from AENA (airspace management) so Ill be launching soon :D
[20:30] <Lunar_Lander> mclane, still have to debug it
[20:30] <Lunar_Lander> it is susceptible to noise and stuff
[20:30] <x-f> cyclops, great news! :)
[20:30] <Lunar_Lander> cool!
[20:30] <cyclops> yeah x-f I hope theres not much wind by then :P, just in case i have 4 possible days for launch
[20:31] <cyclops> And only upus tracker ledt to be delivered
[20:32] <Upu> its yours now you paid for it
[20:32] <Upu> get the mail about the antenna cyclops ?
[20:32] <cyclops> Yes i did
[20:32] <Upu> good
[20:32] <cyclops> I just got some antenna cable
[20:32] <cyclops> for the radials
[20:33] <cyclops> and also bought some porexpan, I hope all fits the 16cm ball
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[20:36] <cyclops> oh and Upu couldn't find adaptors for the SDR dongle yet
[20:37] <Steve_2E0VET> cyclops change the socket on the sdr
[20:37] <cyclops> buying a sma female you mean?
[20:37] <Steve_2E0VET> yes thats what i did
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[20:38] <Steve_2E0VET> they are not easy to get off i had to butcher mine lol
[20:39] <cyclops> but which one did you used? pic?
[20:40] <Steve_2E0VET> hold on i will take one
[20:40] <cyclops> thanks!
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[20:43] <cyclops> test
[20:46] <Steve_2E0VET> cyclops does this help http://i.imgur.com/7VW8cDz.jpg
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[20:46] <cyclops> I see
[20:46] <cyclops> But I have to get something like this http://i.imgur.com/WpZEFYJ.jpg
[20:47] <Steve_2E0VET> where are you based?
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[20:48] <Steve_2E0VET> http://uk.farnell.com/lprs/sma-ra-connector/connector-sma-r-angled/dp/2096224
[20:48] <Lunar_Lander> hi DrLuke
[20:49] <Lunar_Lander> mclane, I don't think Horowitz named his book "The Art of Electronics" without a reason
[20:49] <Lunar_Lander> when I look at the amplifiers and so on
[20:50] <mclane> that's a good book
[20:50] <mclane> I ahve an old volume from my university times
[20:50] <mclane> some 25 yrs ago
[20:51] <Lunar_Lander> yeah
[20:51] <Lunar_Lander> I think even the new ones are still called "second edition"
[20:51] <Lunar_Lander> :)
[20:51] <Lunar_Lander> I heard he wants to get the 3rd edition out but he has some time issues or so
[20:53] Action: SpeedEvil sighs.
[20:53] <SpeedEvil> 3E has been coming out RSN for >1 decade
[20:53] <SpeedEvil> What I'd really like would be a curated wiki version
[20:54] <Willdude123> Hi
[20:54] <Lunar_Lander> "Correspondence with the author in January 2013 indicated that the expected release date was sometime in late 2013."
[20:54] <SpeedEvil> Lunar_Lander: Bull.
[20:55] <SpeedEvil> Lunar_Lander: My brother 'corresponded with the author'. amd got the same response in 2010
[20:55] <SpeedEvil> (or around then)
[20:56] <SpeedEvil> Hill is/was quite active on sci.electronics.design - some of his posts are worth digging up.
[20:56] <SpeedEvil> usenet
[20:56] <Lunar_Lander> ah
[20:56] <Lunar_Lander> so it is like Duke Nukem Forever?
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[20:56] <SpeedEvil> I'm not saying it couldn't happen.
[20:56] <SpeedEvil> Just that I wouldn't hold your breath.
[20:57] <BrainDamage> duke nukem forever got released eventually, many got disappointed :p
[20:57] <SpeedEvil> And - well - the sections of the book that really need updating are the ones that are going to be outdated fastest.
[20:58] <SpeedEvil> For example - the 'microcontrollers' section - has an 8 or so chip 'microcontroller' design.
[20:58] <Lunar_Lander> yea
[20:58] <SpeedEvil> There isn't any treatment of FPGAs
[20:58] <SpeedEvil> Digital processing is getting increasingly important.
[20:58] <LeoBodnar> They are usually quite healthy
[20:59] <SpeedEvil> Many FPGAs suffer from cracked balls.
[20:59] <Lunar_Lander> yea
[20:59] <Lunar_Lander> FPGA was what Acorn had in their computers, right?
[20:59] <SpeedEvil> Err - no.
[20:59] <SpeedEvil> FPGA = Field Programmable Gate array.
[21:00] <SpeedEvil> They're used in tractors.
[21:00] <SpeedEvil> More seriously - they have a programmable memory of some form - FLASH or SRAM - hooked to a sea of gates and busses all tied together.
[21:00] <SpeedEvil> These can be reprogrammed electrically only limited by the speed/power of the gates.
[21:00] <Steve_2E0VET> is upu here?????????????
[21:00] <cyclops> back
[21:01] <SpeedEvil> You get big ones that can do complete 200MHz 32 bit processors with a decent amount of RAM, for example.
[21:01] <SpeedEvil> (For about a couple of dozen times the cost of said processor)
[21:04] <DL7AD> good afternoon
[21:05] <Lunar_Lander> ah
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[21:19] <mikestir> Lunar_Lander: take a look at my 80s computers I did in fpga on my blog
[21:19] <mikestir> if you are interested
[21:19] <cde> mikestir: link?
[21:19] <mikestir> http://www.mike-stirling.com/retro-fpga/bbc-micro-on-an-fpga/
[21:20] <mikestir> http://www.mike-stirling.com/retro-fpga/zx-spectrum-on-an-fpga/
[21:23] <Laurenceb_> nice
[21:24] <Laurenceb_> i should get my bbc model b up and running
[21:24] <cde> very nice
[21:25] <cde> also reminds me of http://pdp2011.sytse.net/wordpress/pdp2011-has-been-to-vcf/
[21:25] <mikestir> someone was asking me if I would do a disk interface recently
[21:25] <mikestir> I have some old 5.25" floppies so it would be worthwhile, but I don't have a drive
[21:26] <SpeedEvil> Laurenceb: Go for it. Pis as trackers are _so_ last year.
[21:27] <mikestir> cde: like it. DE0 as well which I think is still cyclone 2, but smaller
[21:28] <cde> I'd like to do a similar project, but for the TRS-80 model I (my first computer)
[21:28] <mikestir> best one I have seen is the DE1 port of minimig, which is a full ECS amiga plus a second 68000 and additional display logic for disk emulation
[21:28] <fsphil> minimig is fantastic
[21:29] <Lunar_Lander> thanks mikestir
[21:29] <mikestir> it even runs jesus on Es properly, which UAE couldn't do last time I tried
[21:30] <fsphil> huge credit to anyone who does these projects. I did a simple 6502 emulator and that was tricky enough -- let alone the entire hardware of a machine
[21:31] <mikestir> I didn't write the CPU on either of mine, but I did write a lot of the peripheral chips, as well as reverse engineering ULAs and stuff
[21:32] <mikestir> a lot of NMOS devices are internally asynchronous and rely on propagation delay, which you can't do on an FPGA, so getting everything cycle accurate is a fun game
[21:33] <Laurenceb_> wtf newsnight
[21:33] Action: Laurenceb_ joins in the trolling
[21:34] <fsphil> that sounds horrible mikestir
[21:35] <Lunar_Lander> oh
[21:36] <Lunar_Lander> so you did a huge effort
[21:36] <Laurenceb_> newsnight "we are currently playing cat and mouse with a troll"
[21:36] <Laurenceb_> wtf
[21:36] <fsphil> I got mine as far as displaying the C64 startup screen, but I never did interrupts
[21:36] <fsphil> or a keyboard
[21:36] <Laurenceb_> bbc need to lurn 2 internet
[21:36] <SpeedEvil> http://www.youtube.com/watch?v=HS-4s0ilxhs - hah.
[21:37] <SpeedEvil> Worlds first flying ostritch.
[21:37] <arko> wow
[21:37] <Laurenceb_> haha wtf
[21:37] <Lunar_Lander> I got another question on the stepup
[21:37] <Laurenceb_> thats brilliant
[21:38] <mikestir> lol
[21:38] <Lunar_Lander> would it be a good idea to select an asymmetric frequency, i.e. not 100 kHz, as that is a multiple of 50 Hz and thus the power grid in the room could disturb the circuit?
[21:38] <SpeedEvil> It is kinda brilliant.
[21:38] <SpeedEvil> Lunar_Lander: No, it's basically irrelevant.
[21:39] <SpeedEvil> Lunar_Lander: Especially as the frequency varies somewhat
[21:39] <SpeedEvil> http://www.nationalgrid.com/uk/Electricity/Data/Realtime/Frequency/ - the UK is at 49.964Hz now.
[21:40] <Lunar_Lander> ok
[21:40] <Lunar_Lander> I was asking because that PIN Photodiode gamma detector should run with small signals I think
[21:40] <SpeedEvil> You shield it.
[21:40] <Lunar_Lander> yea
[21:40] <SpeedEvil> Sieves are useful - metal ones.
[21:41] <Lunar_Lander> thanks :)
[21:41] <cyclops> Is there any way to use a SMA conector on a TV one without adapter neither soldering new connector?
[21:41] <daveake> hammer
[21:42] <daveake> s/hammer/no/
[21:42] <Lunar_Lander> the ostrich is amazing
[21:42] <SpeedEvil> It is kinda awesome. It had me smiling while watching it - for no good reason.
[21:43] <fsphil> they need to have the cat one chasing it
[21:43] <SpeedEvil> :)
[21:44] <mikestir> then the one with the seat for the pilot chasing that
[21:44] <SpeedEvil> Would he be shouting 'Fenton' - a lot?
[21:45] <mikestir> http://www.youtube.com/watch?v=L75ESD9PBOw
[21:52] <Upu> hey Steve_2E0VET here now
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[21:57] <Steve_2E0VET> upu forgot what i was going to ask
[21:57] <Steve_2E0VET> upu oh yes do you do cable for SMA
[21:58] <Upu> do I ?
[21:58] <Steve_2E0VET> yes
[21:59] <Steve_2E0VET> am i missing something lol
[22:00] <Upu> I do the RG174 with an SMA on the end
[22:00] <Upu> http://ukhas.org.uk/guides:payloadantenna
[22:01] <Upu> like that in the top picture
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[22:03] <Steve_2E0VET> argh ok
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[22:11] <Lunar_Lander> cool guide
[22:11] <Lunar_Lander> nice that we have that now
[22:12] <mikestir> metcal show-off :)
[22:13] <Lunar_Lander> :)
[22:13] <Lunar_Lander> the stargazing live theme is amazing btw
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[22:18] <Steve_2E0VET> is EBAY working???????????????
[22:18] <daveake> nope
[22:19] <Steve_2E0VET> im still having a bad day
[22:19] <fsphil> only 40 minutes left
[22:19] <Steve_2E0VET> upu do you do the sma plugs on their own or should i go to farnells
[22:20] <Steve_2E0VET> 40 for what
[22:21] <daveake> If you look on his site you'll see an RF connector page
[22:21] <daveake> http://ava.upuaut.net/store/index.php?route=product/category&path=71_66
[22:21] <Steve_2E0VET> looks like its only the panel mounts
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[23:42] <Hix> ping arko
[23:44] <arko> hi hi
[23:45] <arko> Hix
[23:46] <Hix> yo, don't know if you read the mailing list, but i said ask you. Burning man. costs covered. [includes fly me over] doesn't really
[23:46] <arko> hmm, yeah i see that email
[23:46] <Hix> your way no?
[23:46] <arko> yep
[23:46] <arko> near LA
[23:46] <arko> maybe a 2-3 hr drive
[23:46] <arko> not bad
[23:46] <Hix> did you know babs is in the same time zone too?
[23:47] <arko> he is?
[23:47] <arko> i thought he's uk
[23:47] <Hix> yup honeymoon [with arduino cookbook apprently :) ]
[23:47] <Hix> obv not honeymoonig a book
[23:47] <arko> ahhh
[23:47] <arko> haha
[23:48] <Hix> that'd be plain wrong on every page
[23:49] <arko> :P
[23:50] <arko> ah crap
[23:50] <arko> burning man is in Black Rock
[23:50] <arko> i keep thinking its mohave
[23:50] <arko> I probably wont be much help.
[23:50] <Hix> anyhows, I thought, seeing as they are looking for help and they say they will cover costs, you may be able to hook up
[23:51] <arko> :P
[23:51] <Hix> http://www.wired.co.uk/news/archive/2013-07/26/genome-laser-burning-man
[23:51] <arko> decept i need to be back in la by sept 4 to leave for the uk
[23:51] <Hix> sorry, link shortener dead
[23:52] <arko> i dont think i can take off more time from work :(
[23:52] <Hix> UK? you coming to the conf?
[23:52] <arko> yeah dude
[23:52] <arko> speaking too
[23:52] <arko> :)
[23:52] <Hix> sweet
[23:52] <arko> http://ukhas.org.uk/general:ukhasconference2013
[23:52] <arko> 1150 Ara Kourchians - Heavy Payloads aka Ballooning in the US
[23:52] <arko> :P
[23:52] <Hix> in english or american ;p
[23:53] <arko> its not really about that btw...
[23:53] <arko> depends, get be drunk enough i'll do scottish
[23:53] <Hix> or Irish if you change the whisky spelling
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[23:54] <arko> hehehe
[23:56] <Hix> right dude - past the witching hour for me. Sláinte. see you soon in Blighty :)
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[00:00] --- Wed Jul 31 2013