highaltitude.log.20160905

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[04:10] <SpacenearUS> New position from 03K6RPT-11 after 0312 hours silence - 12https://tracker.habhub.org/#!qm=All&q=K6RPT-11
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[05:35] <SpacenearUS> New vehicle on the map: 03YO3FVR_chase - 12https://tracker.habhub.org/#!qm=All&q=YO3FVR_chase
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[07:47] <AndyEsser> moaning
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[08:18] <mfa298> AndyEsser: not even a *good* moaning ?
[08:21] <gonzo__> 80mtrs is the place for that
[08:26] <mfa298> hah
[08:27] <AndyEsser> mfa298: never
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[08:30] <AndyEsser> Yaesu FT817 Dispatched!
[08:30] <AndyEsser> This makes for a good moaning
[08:35] <mfa298> that does get you one step closer to moaning on 80m
[08:35] <AndyEsser> heh
[08:41] <fsphil> we should all get on 80m and talk about happy things
[08:41] <fsphil> that'll annoy them
[08:41] <AndyEsser> o0o0 just remembered the conference is this Saturday... something to look forward to
[08:44] <cm13g09> mfa298: morning it is indeed...
[08:44] <cm13g09> more likely a good moaning though
[08:47] Action: daveake rushes off to prepare his presentations
[08:48] <AndyEsser> thank god I'm not presenting
[08:48] <AndyEsser> maybe next year - if I have something of interest
[08:49] <edmoore> day b4
[08:49] <edmoore> always
[08:49] <AndyEsser> morning of surely?
[08:49] <AndyEsser> over breakfast
[08:49] <edmoore> i did the gps talk the day b4 and that was a stress
[08:49] <edmoore> but that was a busy week with work
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[08:49] <AndyEsser> I wrote my best man speech on my lunch break the day before the wedding, and practiced it on the drive down
[08:49] <daveake> Fortunately, I have a brief London trip on Thursday, by train, so that's perfect
[08:49] <AndyEsser> it was fine :)
[08:50] <gonzo__> muts get my booking in, hope I can make it
[08:50] <gonzo__> must
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[09:18] <AndyEsser> Seems to be a good turnout booked for this year
[09:18] <AndyEsser> 54 last time I checked
[09:23] <gonzo__> what's the cutoff date for booking?
[09:23] <craag> "mid this week"
[09:24] <Laurenceb__> eeek
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[09:24] Action: Laurenceb__ is still undecided
[09:24] <cm13g09> mroning craag
[09:25] <craag> mornin cm13g09
[09:25] <cm13g09> good weekend?
[09:25] Action: cm13g09 does battle with a Server
[09:25] <craag> yeah not bad ta
[09:26] <cm13g09> I spent mine charging up and down the M40/A34
[09:26] <cm13g09> so....
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[09:26] <cm13g09> slightly tired today
[09:29] <craag> I could have done with a bit more sleep last night, but got ldap working how I want so am happy tired :)
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[09:59] <pb0ahx> !flights
[09:59] <SpacenearUS> 03pb0ahx: Current flights: 03UBSEDS19&20 434.610 CONTESTIA 16/1000 10(303d), 03UBSEDS18 434.612.5 CONTESTIA 16/1000 10(64a5)
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[10:40] <SpacenearUS> New position from 03KEMPSP after 0321 hours silence - 12https://tracker.habhub.org/#!qm=All&q=KEMPSP
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[10:41] <PE0SAT> !flights
[10:41] <SpacenearUS> 03PE0SAT: Current flights: 03UBSEDS19&20 434.610 CONTESTIA 16/1000 10(303d), 03UBSEDS18 434.612.5 CONTESTIA 16/1000 10(64a5)
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[10:53] <SpacenearUS> New position from 03JMHS after 034 days silence - 12https://tracker.habhub.org/#!qm=All&q=JMHS
[10:54] <Laurenceb__> to go to conference or not to go...
[10:58] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12https://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
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[11:06] <SpacenearUS> New position from 03IV3SRD-11 after 039 hours silence - 12https://tracker.habhub.org/#!qm=All&q=IV3SRD-11
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[11:27] <Garak> We has a successful first launch yesterday here in NS, Canada. Hit about 25400m
[11:29] <Garak> Sent up the wrong GPS though, it quit at 40,000ft, I forgot to check the firmware on my second gps that we ended up swaping to
[11:29] <SIbot> In real units: 40,000 ft = 12192 m
[11:29] <Garak> http://aprs.fi/#!mt=roadmap&z=8&call=a%2FVE1HAB&timerange=86400&tail=86400
[11:32] <SpacenearUS> New position from 03KK4RPQ-1 after 0312 hours silence - 12https://tracker.habhub.org/#!qm=All&q=KK4RPQ-1
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[11:46] <AndyEsser> Emailing accounting about whether it's ok for the company to pay for my flying lessons
[11:46] <AndyEsser> this'll be an interesting response...
[11:47] <SpeedEvil> Is it your company?
[11:48] <AndyEsser> yes
[11:48] <AndyEsser> as a Director I can justify it
[11:48] <gonzo__> a while ago, there was some .gov grant you could get towards future employment training. But they stopped that
[11:48] <AndyEsser> just... want to be sure I'm not going to get a shitty email from her at the end of the year ;)
[11:48] <craag> faster commutes mean more time in the office right?
[11:48] <AndyEsser> she's very bossy
[11:49] <AndyEsser> craag: haha, my 'office' is 5m from my bedroom
[11:49] <AndyEsser> but I can 'justify' for it Balloon and Rocket stuff.... maybe
[11:49] <AndyEsser> :P
[11:49] <gonzo__> you can make aeroplane noises whilst padding across the hallway in our slippers?
[11:49] <craag> chase-plane!
[11:49] <SpeedEvil> AndyEsser: doesn't FPV in some cases also require a icence?
[11:49] <gonzo__> there has been one of those already hasn't there?
[11:50] <AndyEsser> craag: :)
[11:50] <AndyEsser> that totally wasn't one of my ideas
[11:50] <AndyEsser> but primarily testing of trackers at altitude
[11:54] <AndyEsser> althought 4,000M max ceiling of the aircraft I'd be training in kind of limits that....
[11:57] <gonzo__> open the canopy?
[11:57] <AndyEsser> get those extra couple metres?
[11:58] <AndyEsser> Put it on a Selfie Stick?
[11:58] <gonzo__> if that's the 'ceiling of the aircraft'
[11:58] Action: gonzo__ gets his coat....
[11:58] <AndyEsser> ah...
[11:59] <AndyEsser> sorry... failed to get your "humour"
[11:59] <gonzo__> it failed years ago
[11:59] <AndyEsser> s/years/decades
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[12:32] <gonzo__> ah, age-est abuse... True though
[12:56] <SpacenearUS> New vehicle on the map: 03HB9PD - 12https://tracker.habhub.org/#!qm=All&q=HB9PD
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[13:13] <garymortimer> I say clever chaps.... Just browsing LoRa modules and bumped into these Feather modules https://www.adafruit.com/products/3179 are the useable?
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[13:14] <adamgreig> probably yea but might as well just use the RFM69 module itself, they're very easy to solder and use, and you can get them on an rpi breakout if you wanted to use them with that
[13:16] <garymortimer> Well it was to avoid my soldering really!A tidy looking package
[13:16] <daveake> 69 isn't lora you probably mean rtm96 adamgreig :)
[13:16] <daveake> grr rfm96
[13:17] <daveake> but yeah you can get lora modules on pi boards, avr boards, whatever, or just diy
[13:17] <adamgreig> oh yes indeed 96
[13:17] <mattbrejza> is that one of the arduinos that actually has debugging?
[13:19] <adamgreig> think it's an arm?
[13:19] <adamgreig> yea ARM-CM0
[13:19] <adamgreig> so I guess it should do
[13:19] <adamgreig> wow there's a new arduino zero?
[13:19] <mattbrejza> hmm perhaps the official board does, via a separate usb interface
[13:19] <adamgreig> https://www.adafruit.com/products/2843
[13:19] <adamgreig> omg you're right
[13:19] <adamgreig> what have they done lol
[13:20] <adamgreig> "Atmels Embedded Debugger (EDBG), integrated in the board, provides a full debug interface with no need for additional hardware, making debugging much easier. EDBG additionally supports a virtual COM port for device programming and traditional Arduino boot loader functionality uses."
[13:20] <garymortimer> On the face of it that board should have pins that talk to the board in the way trackduino expects
[13:20] <mattbrejza> the EDBG is probably a more capable part than the main M0...
[13:21] <adamgreig> that would be the arduino way
[13:21] <mattbrejza> you would hope it wouldnt draw any power when running from batteries, but you never know
[13:21] <cm13g09> this is weird
[13:21] <cm13g09> SPI Flash
[13:21] <adamgreig> since it provides a usb com port, I bet it does
[13:21] <cm13g09> you select the chip
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[13:22] <cm13g09> and it refuses to reply....
[13:22] <adamgreig> can't make out the chip ID on the debugger mcu though
[13:23] <mattbrejza> it think it has its own part number despite probably being just a micro
[13:24] <adamgreig> weird
[13:24] <adamgreig> guess that's quite nice if it comes with firmware etc
[13:24] <adamgreig> you can just solder one onto your board and bam, usb debug/programming/etc
[13:24] <adamgreig> then again seems a bit niche for non-hobby projects
[13:25] <mattbrejza> i wonder if they intend it to be soldered onto the 'product' board, or just for use in offboard debuggers
[13:26] <garymortimer> So just to recap as I prepare to hit the buy button on something I can actually get in South Africa, I should be able to use https://www.robotics.org.za/index.php?route=product/product&path=20&product_id=1516 as a tracker
[13:26] <garymortimer> Remember type slowly when replying
[13:28] <adamgreig> it would need GPS, and you need a LORA receiver
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[13:36] <garymortimer> Yeah have the GPS, and a pi with board
[13:46] <garymortimer> What does it mean when Missed B5 comes up in LoRa string?
[13:47] <garymortimer> MISSED B5 13:46:38 - -29.301708,29.966400,1409,6
[13:50] <garymortimer> other than I screwed something up
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[13:53] <fsphil> https://twitter.com/ESA_Rosetta/status/772793706869055488
[13:55] <garymortimer> We have been looking all over the village in which I live https://en.wikipedia.org/wiki/Rosetta,_KwaZulu-Natal
[13:57] <fsphil> aliens. I knew it
[14:08] <daveake> garymortimer: That means you have an old version of pits and it missed the sync byte from the ublox
[14:08] <daveake> had to grep some old source to find that one
[14:09] <garymortimer> AH, I thought I had the latest will update things. Thanks Dave
[14:09] <daveake> suggest you grab the latest
[14:10] <daveake> that old one used ubx which I had some trouble with, so I reverted to nmea. I've since (probably) found out why I was having trouble, so I'll probably try again soon
[14:11] <daveake> You'll need to power cycle the gps as all the nmea sentences are now switched off
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[14:31] <AndyEsser> Aww - Accountant has poo poo'd my idea for ZD to pay for the flying lessons
[14:34] <fsphil> head in the clouds too much already?
[14:35] <AndyEsser> I'd have to pay tax on it as it'd count as a benefit in kind
[14:35] <AndyEsser> although it would reduce my CT liability
[14:36] <daveake> tell him it's an investigation into cloud computing
[14:36] <fsphil> blue sky thinking
[14:36] <Laurenceb> why would you use nmea over ubx
[14:36] <Laurenceb> ewww
[14:37] <daveake> Well I wouldn't, but my ubx code was failing and my nmea code wasn't, and as I had other stuff to do I reverted
[14:37] <daveake> Was supposed to be temporary, but heh
[14:38] <daveake> Anyway appears the issue was in the i2c code not my ubx code
[14:38] <daveake> So I'll have another go soon
[14:39] <Laurenceb> i2c failing? surely not
[14:39] <Laurenceb> /s
[14:39] <daveake> :)
[14:40] <cm13g09> I've got SPI problems
[14:40] <cm13g09> for no obvious reason
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[14:45] <SpacenearUS> New vehicle on the map: 03DL0PTB-11 - 12https://tracker.habhub.org/#!qm=All&q=DL0PTB-11
[14:46] <kensparkboys> hi guys, completely new to this ballooning business but been looking into it with some friends. we've found a few kit sellers online but we're based in west london and everything Ive read suggests launching from London is really difficult. where might be a good place for us to launch near london without having to travel too far? thanks in advance! :)
[14:49] <edmoore> anywhere where you have a relative that doesn't live near an airport
[14:49] <Geoff-G8DHE-M> Your going to have to travel to do the chase anyway!
[14:51] <kensparkboys> Don't really have any go to outside London or Essex, problem with this part of the world haha. Ive looked at the maps on Sky Demon, is somewhere out past Aylesbury going to be far enough away from the TMA? We're obviously happy to travel for the chase but dont want to have to be going to wales or anything crazy for the launch!
[14:52] <Geoff-G8DHE-M> If you view this in GE then stay out of the Blue areas! http://360.g8dhe.net/hab_flights/Google_Earth_Tools/Airspace.kmz
[14:52] <edmoore> people have got permission to fly from westcott which is just next to aylesbury
[14:52] <edmoore> so that might be ok
[14:53] <AndyEsser> kensparkboys: Cambridge is a short (1.0 -1.5 hour) train ride away, and then you could potentially make use of Elsworth
[14:57] <Geoff-G8DHE-M> Most flights are going to Head Easterly so going out West does make sense to launch!
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[15:01] <kensparkboys> thanks guys! camrbidge and westcott both look good, and that google earth app is super useful thanks! elsworth looks nice for a day out too, whats the significance for ballooning?
[15:02] <SpacenearUS> New position from 03W5LCY-7 after 032 days silence - 12https://tracker.habhub.org/#!qm=All&q=W5LCY-7
[15:02] <AndyEsser> Steve Randall of Random Engineering often does launches there, and I believe he's negotiated a helpful NOTAM that doesn't require as much notice - but you will need to liaise with him about that all
[15:02] <AndyEsser> don't quote me
[15:03] <edmoore> all of these sites are private sites that happen to have been used before by people who have the right to be there (premises or college or landowners permission or whatever). So you'd have to ask nicely if you wanted to launch from one of them
[15:03] <edmoore> i suspect westcott is out
[15:04] <daveake> and my site probably comes under "going to Wales or anything crazy"
[15:09] <Laurenceb> spacex explosions cant melt steel transport/erector beams
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[15:13] <arjunnaha> In terms of a laptop for chasing with an Airspy, can anyone recommend anything under £200ish?
[15:13] <adamgreig> thinkpad x201, used from ebay
[15:14] <arjunnaha> What's the battery like on the thinkpad?
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[15:15] <adamgreig> depends on condition
[15:15] <adamgreig> I bought a new 9 cell battery for it which gets me around 8 hours+
[15:15] <adamgreig> running an airspy with gqrx or something will eat that up a bit
[15:15] <adamgreig> I recommend powering the laptop from the car via inverter on chases
[15:16] <cm13g09> adamgreig: I've got a thinkpad here that does about 14 hours on "business tasks"
[15:16] <arjunnaha> Ah, sounds good. I'll have to have a good browse on eBay then
[15:16] <edmoore> cm13g09: for context could you provide model and battery size and OS
[15:16] <cm13g09> edmoore: I'll admit it's a T460, Windows 10, and the extended battery
[15:17] <cm13g09> I have just noted the budget requirement
[15:17] <edmoore> don't incriminate yourself
[15:17] <edmoore> just trying to make the info useful
[15:17] <cm13g09> Apologies - info was completely non-usueful
[15:17] <cm13g09> given the money requirement
[15:18] <edmoore> well looking at it i wouldn't be surprised if you could nudge into £200 for a 2nd hand one
[15:18] <cm13g09> as the T460 is nowhere near sub £200
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[15:18] <cm13g09> I'd suspect ~£500 or so for a second hand T460
[15:18] <adamgreig> x201 go for £100-£200 on ebay a fair bit
[15:18] <adamgreig> there's one £75 atm
[15:18] <edmoore> blimey so it isn't
[15:19] <arjunnaha> Tbh doesn't even need to be windows 10, for SDR# and dl-fldigi, 7 works
[15:19] <cm13g09> edmoore: I got told, for work, that I had to spec a laptop that matched or beat a MacBook Air in terms of battery life and performance
[15:19] <arjunnaha> Adamgreig: have you got a link for that?
[15:19] <adamgreig> search ebay for x201, I already closed the tab
[15:19] <cm13g09> The T460 did so, while being ~£200 cheaper than the Macbook
[15:20] <adamgreig> but you could have just got a macbook air..
[15:20] <arjunnaha> I've got a MacBook Pro, can can never seem to get Airspy working with it
[15:20] <cm13g09> adamgreig: For embedded development...
[15:20] <edmoore> i've not had a problem doing embedded development on a mac
[15:21] <edmoore> avr and arm
[15:21] <cm13g09> I'm also a Windows/Linux man
[15:21] <daveake> I'm very pleased with my x230 - SSD, IPS screen, nice for chases
[15:21] <edmoore> can't speak for anything with some proprietary shitshow toolchain
[15:21] <cm13g09> edmoore: Oh... I'm dealing with that sort of stuff
[15:21] <garymortimer> @Dave I am using a file updated 13 days ago https://github.com/daveake/FlexTrack still getting the errors
[15:21] <edmoore> but it's not an issue for any gnu tooolchain
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[15:21] <daveake> garymortimer: Oh I thought this was pits
[15:21] <cm13g09> edmoore: GNU toolchains.... railways.....
[15:21] <daveake> (as that's where I found the message)
[15:22] <cm13g09> "Not certified"
[15:22] <edmoore> i don't follow
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[15:22] <edmoore> anyway, homebrew is the package manager you want for osx and it has basically everything you want
[15:22] <cm13g09> The rail industry requires everything be certified
[15:22] <cm13g09> even the toolchains etc
[15:22] <garymortimer> Oh stanby now it has a lock it seems to be bangingt the strings out
[15:22] <edmoore> so you're not allowed to use an OS stuff?
[15:22] <edmoore> any*
[15:23] <cm13g09> edmoore: depending where it's going....
[15:23] <daveake> Anyway garymortimer it means something came in from the ublox without a B5 (ubx start byte) at the beginning
[15:23] <cm13g09> potentially not
[15:23] <adamgreig> just found that the MISRA C guidelines are only £18 to buy the PDF officially, which is a lot cheaper than I expected, if anyone's interested in nominally doing better C :P
[15:23] <garymortimer> I have changed GPS and all seems good Dave, thanks
[15:23] <adamgreig> (for free, you could download Rust and use that instead...)
[15:23] <daveake> cool
[15:24] <cm13g09> edmoore: this is the same industry that has regulation luminosity orange high-vis....
[15:24] <edmoore> i think the nub of misra is available for free in most places
[15:24] <adamgreig> you can readily get 2004 for free from your choice of .ru website
[15:24] <adamgreig> and I don't expect there's much in it
[15:25] <adamgreig> nevertheless it's the sort of thing I imagined costing a lot more than £18
[15:26] <edmoore> yes
[15:26] <edmoore> most standards seem to be a racket
[15:26] <edmoore> i suspect what costs money are the automated analysis tools that test your code against misra
[15:26] <adamgreig> oh yes, they cost a fortune
[15:31] <edmoore> really good analysis tools still haven't permeated into FOSS
[15:31] <edmoore> i guess the projects that need then tend to be big bucks things
[15:32] <adamgreig> and they're relatively hard and unrewarding to work on
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[15:32] <adamgreig> having said that, things like rust build a _lot_ of that into the compiler
[15:33] <edmoore> i try and see what the state of the art is every so often and it's usually 'clang caught some obvious stuff I guess.... what was *really* interesting is this fascinating class of bugs i hadn't even thought about that sorcerywooC caught [etc]'
[15:33] <edmoore> but just having -Wmisra would probably make a lot of people's years
[15:33] <adamgreig> yep that'd be amazing
[15:34] <edmoore> some of the automated testing tools that JPL wrote for writing the curiosity software (in C) look quite fun
[15:34] <edmoore> it'd be nice of some of those were to leak out
[15:37] <adamgreig> yea
[15:40] <russss> iirc they were in addition to some commercial tools though, and mostly to enforce their own specific coding rules
[15:40] <edmoore> they were yes
[15:40] <edmoore> they used basically everything off the shelf and their own stuff to try and catch 'em all
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[15:45] <Ian_> Is misra the jpl of the automotive industry and do they suck their teeth every time another story emerges about Jeep hackability or VW key security?
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[15:46] <adamgreig> MISRA C is a set of guidelines for writing C
[15:46] <adamgreig> MISRA is the motor industry software reliability association
[15:47] <adamgreig> MISRA C is commonly used in automotive, aerospace, telecom, etc etc
[15:47] <edmoore> i can't answer the teeth question
[15:47] <adamgreig> but probably it's "yes"
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[15:47] <adamgreig> I suspect they're more upset at the toyota ECU stuff
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[15:47] <Ian_> I'm utterly confused by the AndyEsser reference to Elsworth being a short train ride from London.
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[15:48] <edmoore> he forgot the bit about the long walk afterwards
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[15:48] <edmoore> but yes you would be driving anyway
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[15:49] <Ian_> It's hardly a rail head and I'm trying to imagine a HAB chase by train or taxi.
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[15:49] <Ian_> edmoore it was a case of unjoined thinking I suspect
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[15:50] <Ian_> I missed the Toyota ECU stuff. Off for a chat with Mr Google for an update.
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[15:57] <Laurenceb> "interested in nominally doing better C"
[15:57] <Laurenceb> surely debatable, misra seems very conservative and sets strict limits on what you can do
[15:58] <adamgreig> yes exactly
[15:58] <adamgreig> "better C"
[15:58] <Laurenceb> I mean I'm sure its better for flashing an LED
[15:58] <Laurenceb> but I'd worry about the effect of some of their recommendation on manageability of large projects
[15:58] <Laurenceb> *recommendations
[15:59] <adamgreig> oh?
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[15:59] <Laurenceb> well it depends on what exact subset of their stuff you are following
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[16:02] <Laurenceb> Rule 104 (required): Non-constant pointers to functions shall not be used.
[16:02] <Laurenceb> for example
[16:03] <adamgreig> when do you need mutable pointers to functions?
[16:03] <Laurenceb> I'm currently using them in a network stack
[16:04] <Laurenceb> to allow a connection to be made by multiple interfaces
[16:04] <adamgreig> how're you using them to be non-constant?
[16:05] <Laurenceb> pointer is part of the connection struct, and points to the low level functions for the interface used by the connection
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[16:05] <Laurenceb> I guess there are workarounds to this
[16:05] <Laurenceb> but seems more messy
[16:07] <edmoore> so a lot of the jpl c standard has similar levels of conservatism and a lot of it is to make static analysis easier
[16:14] <Vaizki> http://www.esa.int/Our_Activities/Space_Science/Rosetta/Philae_found
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[16:14] <Vaizki> oh poor philae
[16:14] <Laurenceb> supposedly it was a splosives issue?
[16:15] <Laurenceb> harpoon charge didnt like space environment?
[16:20] Action: cm13g09 gets irate at an IC for no obvious reason
[16:36] <trickv> hello, I'm new to the UKHAB group and haven't flown before. (yet!) I'm thinking about joining the conference this weekend in Cambridge - think it'd be good for a newbie?
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[16:44] <adamgreig> yes it should be good
[16:44] <Ian_> Definitely. You will meet a lot of the clever guys that are so helpful and just being able to put faces to usernames will help enormously
[16:44] <trickv> cool :)
[16:46] <Laurenceb> "these people came from the internets to be here"
[16:55] <edmoore> i have actually witnessed 'hello, I'm from the internet' at a balloon launch
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[16:56] <SpacenearUS> New vehicle on the map: 03YO3FVR_chase - 12https://tracker.habhub.org/#!qm=All&q=YO3FVR_chase
[16:56] <trickv> haha I believe it
[16:57] <trickv> what's the normal protocol for inviting yourself to a balloon launch?
[16:57] <edmoore> i 3rd all the comments about the conf being good
[16:57] <edmoore> and if you don't mind a drink there's usually a good chat session after in a pub
[16:57] <edmoore> trickv: just email the launcher
[16:57] <edmoore> if there's one near to you, most people are usually happy for you to come along
[16:57] <edmoore> you might get roped into holding something
[16:57] <edmoore> it's the best way to answer about 80% of the questions you might have initially
[16:58] <trickv> cool :)
[16:58] <trickv> and +1 for a pint afterwards!
[16:58] <PE2BZ> Don´t hold on to the rope however ;-)
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[17:00] <SpacenearUS> New position from 03DBTEST after 033 days silence - 12https://tracker.habhub.org/#!qm=All&q=DBTEST
[17:13] <trickv> do the balloons have enough lift to actually pull a person off the ground?
[17:14] <trickv> I've registered for Saturday now :) Just gotta decide whether to come up (from London) Friday night or early Saturday.
[17:15] <PE2BZ> trickv one balloon for normal payload (< 1 kg ) could never do that ;-)
[17:16] <PE2BZ> I did git pull for the tracker, but make clean and then make gives:
[17:16] <PE2BZ> collect2: error: ld returned 1 exit status
[17:16] <PE2BZ> Makefile:22: recipe for target 'tracker' failed
[17:16] <PE2BZ> make: *** [tracker] Error 1
[17:16] <trickv> I didn't think so :)
[17:16] <PE2BZ> Now running apt-get update and upgrade, but any clue on that ?
[17:17] <PE2BZ> trickv glad to hear. Did not want to worry you :-)
[17:17] <edmoore> trickv: cam is pretty easy from london
[17:17] <edmoore> 45 mins from kings cross
[17:18] <edmoore> tho the station is a bit of a walk from the astronomy institute but there are buses
[17:22] <PE2BZ> Makefile:22: recipe for target 'tracker' failed is fixed. Error all my fault.
[17:22] <PE2BZ> had left a ben.c in the folder.
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[17:30] <Ian_> Normal itinerrary is social gathering/s after the day's talks on the day. Often people coming down on the Friday meet up to eat, drink and chat.
[17:33] <fsphil> there are usually burgers
[17:37] <AndyEsser> well going to the airport was a bad idea...
[17:38] <Ian_> You go to airports for tickets and flights. Airfields for flying schools, tuition and instruction.
[17:38] <AndyEsser> Ian_: they refer to it as an airport - due to the size of it
[17:38] <AndyEsser> the Airbus facility dwarfs the site though
[17:38] <Ian_> So, what was the problem?
[17:39] <AndyEsser> they have units available that are half-workshop/half-office to let
[17:39] <AndyEsser> and now I just want to get one
[17:39] <AndyEsser> haha
[17:39] <AndyEsser> however... first flying lesson booked for Friday :)
[17:39] <Ian_> £££ no object!
[17:39] <fsphil> nice, can you pick me up at antrim airport :)
[17:39] <AndyEsser> Ian_: financially I'm in a position to be able to afford it now
[17:39] <AndyEsser> fsphil: let me get my license first, mayhaps?
[17:39] <Ian_> So, will you henceforth be known as the Red Baron (elect)
[17:39] <fsphil> nobody will mind
[17:40] <PE2BZ> fsphil I don´t if you take a nice payload with you ;-)
[17:40] <Ian_> I like the tri-wall paper bags fsphil
[17:41] <AndyEsser> fsphil: for my solo flight I was going to have a tracker on board so people could track my progress :)
[17:41] <PE2BZ> AndyEsser all your ups and downs :-)
[17:41] <Ian_> Such fun when there is someone that needs one. So strong for the sandwiches, before and after.
[17:45] <AndyEsser> Did suggest to the flying school that I just borrow the plane for the weekend to get to Cambridge
[17:45] <AndyEsser> but that would be expensive
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[17:51] <garymortimer> Hold the conf closer to Farnborough time in 2018 16-22 July and I would love to visit
[17:55] <PE2BZ> ping daveake good evening. Can you confirm that on this line from the LoRaArduinoSerial: Arduino 10 - LoRa NSS Arduino 11 - LoRa MOSI Arduino 12 - LoRa MISO Arduino 13 - LoRa CLK
[17:55] <PE2BZ> the connection to LoRa CLK = the pin named SCK ?
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[18:11] <daveake> yes
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[18:13] <PE2BZ> daveake tnx
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[18:17] <garymortimer> ... So LoRa what might I expect to hear on my handheld when its running?
[18:18] <garymortimer> I am expecting some sort of clicking and rumbling (well not rumbling)
[18:20] <bertrik> garymortimer: LoRa is sweeps, I think it depends on the particular spreading factor and bandwidth
[18:20] <fsphil> and what mode you're using
[18:20] <fsphil> on the handheld
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[18:21] <bertrik> in FM, it should sound like low frequency sawtooths then :)
[18:21] <fsphil> yeah
[18:23] <garymortimer> hummm
[18:24] <fsphil> yes that too :)
[18:24] <garymortimer> ;-)
[18:25] <garymortimer> In the comments it says comment out 7- reset if not connected, should it be connected .... (I have it connected now)
[18:27] <mfa298> arjunnaha: reading scrollback, if you're looking at a 2nd hand laptop don't count on the battery being any good (so if you want a battery with any life assume that you'll need to get a new one), that way you can be pleasantly surprised if the battery manages >30 minutes.
[18:30] <SpacenearUS> New position from 03UBSEDS18 after 0320 hours silence - 12https://tracker.habhub.org/#!qm=All&q=UBSEDS18
[18:30] <fsphil> wheee
[18:31] <fsphil> so if thia makes it, is it the first round-the-world pi?
[18:32] <Geoff-G8DHE-Lap> Its not a Pi, that was 19/20, 18 was the original tracker he designed.
[18:32] <fsphil> ah I thought this was the imaging one
[18:32] <Geoff-G8DHE-Lap> http://www.bristol-seds.co.uk/hab/flight/2016/08/29/ubseds20.html
[18:34] <Geoff-G8DHE-Lap> http://www.bristol-seds.co.uk/flights.html is them all
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[18:41] <arjunnaha> mfa298: ah, I was considering buying a new battery but imagine that a genuine one would cost as much the laptop, I'll have to look at a decent car inverter
[18:41] <fsphil> I've been meaning to get a pure-sine inverter
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[18:43] <fsphil> some PSUs sound pretty unhappy with the step wave versions
[18:46] <Vaizki> victron are not the cheapest but I have only good things to say about them
[18:47] <fsphil> I've only used their solar controllers. solid hardware
[18:48] <fsphil> did find what I think is a firmware bug though, and they basically said they wouldn't fix it was I wasn't using it for its intended purpose :)
[18:48] <fsphil> -w
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[18:51] <arjunnaha> Is there an inverter that is 'consumer friendly', i.e. with a car accessory input and an output suitable for laptops?
[18:51] <Vaizki> loads of them, quality-wise ymmv
[18:52] <fsphil> yeah, I've a belkin inverter. works, but as mentioned some devices running of it sound quite bad
[18:52] <fsphil> nasty buzzing noise caused by the not-quite-sine wave
[18:53] <SpeedEvil> Most laptops will run fine from 'modified sine'
[18:53] <SpeedEvil> If you want to go the extra bit, you could get a DC-DC for you laptop
[18:53] <fsphil> yeah, my old thinkpad was fine with it
[18:54] <fsphil> yaesu ft817 psu also fine with the modified sine
[18:55] <Vaizki> it's an easy job to slap a 12V plug on a victron and it has a standard uk/euro socket on it
[18:56] <Vaizki> of course the price is 3x that of a modified sine wave
[18:59] <Vaizki> something like this might be worth a punt but I wouldn't hold my breath waiting for a beautiful waveform.. http://www.ebay.co.uk/itm/300W-Pure-Sine-Wave-Power-Inverter-Converter-Charger-Adapter-DC-12V-AC-220V-Z5X4-/141987785283?hash=item210f21aa43:g:mEsAAOSw1DtXLUe2
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[18:59] <SP9UOB-Tom> evening all
[18:59] <Geoff-G8DHE-m> Maplin do 12v inverters for laptops direct to the voltage required and the correct plug, rather than going via 240v
[19:00] <Geoff-G8DHE-m> Look under laptop supplies.
[19:01] <Vaizki> I guess they are DC-DC boost jobbies?
[19:02] <Geoff-G8DHE-m> Yip I use a larger one at 150w for mine
[19:02] <garymortimer> So I'm not seeing a complete sentence with the LoRa code is that right? µb
[19:03] <garymortimer> 19:0:0 - -29.301656,29.966505,1408,8
[19:03] <Geoff-G8DHE-m> ? No
[19:03] <garymortimer> Yeah the callsign she not there
[19:03] <Geoff-G8DHE-m> Should be if your using daveakeman gateway
[19:04] <garymortimer> Ah I'm looking at the serial out of an arduino
[19:05] <Geoff-G8DHE-m> Still need a callsign surely?
[19:09] <fsphil> use the source luke
[19:10] <garymortimer> please, don't call me Shirley
[19:11] <garymortimer> comes up at the top of the page when running FlexTrack Flight Computer, payload ID(s) DART1
[19:12] <Geoff-G8DHE-m> http://www.maplin.co.uk/p/12v-in-carin-air-laptop-adapter-with-usb-socket-1a-with-6-charging-tips-a19jt
[19:13] <Vaizki> life would be so much easier if all cars were just 24V.. whoever came up with 12V anyway..
[19:13] <Geoff-G8DHE-m> You can use that one in-flight as well ;-)
[19:14] <Vaizki> 1A USB port is a bit of a letdown on that one
[19:14] <Geoff-G8DHE-m> What's wrong g with 48v?
[19:14] <Vaizki> nothing at all
[19:14] <Vaizki> well maybe biiig batteries
[19:15] <Vaizki> not sure how easy it would be to make a small 48V lead acid battery
[19:15] <Geoff-G8DHE-m> LiPo?
[19:15] <Vaizki> well lipos are new
[19:16] <Vaizki> anyway, with the move towards EVs.. 12V has gotta go
[19:16] <Vaizki> you're not going to have fun running AC or power steering off 12V
[19:17] <Vaizki> and 48V I've gotten arcing problems, switches can get expensive
[19:18] <Geoff-G8DHE-m> CAN Bus all the way
[19:27] <garymortimer> Ok so....
[19:28] <SP9UOB-Tom> Vaizki: not-so-fancy mosfet will switch 48V easilly
[19:29] <garymortimer> lora TX now chirping away, serial rx LoRaArduino serial, is that set up in the standard rx mode, or put another way what mode does it have to be in?
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[20:10] <robert__> Hi, I've just filed a flight document for HERMES1 for a launch on Wed 7/9/16. Could someone please approve for the tracker?
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[20:10] <craag> Hi robert__, ask over in #habhub, and post your flight doc id
[20:11] <robert__> ok - will do
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[20:47] <craag> Are there any plans for people to meet up for a meal in cambs on friday night?
[20:52] <dbrooke> I'd probably come down for the evening if there were such plans
[20:56] <daveake> Not heard of any particular plans, but I'm pretty sure that us in the Arundel will wander into town for solid and liquid refreshment
[20:57] <daveake> I know that fsphil, Upu, Rob and myself are there
[20:57] <Upu> won't be there till late on
[20:57] <daveake> ok, I should be there by 5:30
[20:57] <daveake> picking up fsphil on the way
[20:58] <dbrooke> that's a long way round
[20:58] <Upu> probably 9.30 /10 before we land
[21:00] <Geoff-G8DHE-Lap> I should be up there late afternoon Southern Rail permitting!
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[21:06] <mfa298> Geoff-G8DHE-Lap: late afternoon might be possible with Southern, but which day ?
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[21:07] <Geoff-G8DHE-Lap> That's the question !!
[21:09] <craag> heh
[21:09] <craag> ok so a reasonable number of people around
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[22:06] <michemto> he yo
[22:11] <fsphil> o/
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[23:05] <SpacenearUS> New position from 03IV3SRD-11 after 0310 hours silence - 12https://tracker.habhub.org/#!qm=All&q=IV3SRD-11
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[00:00] --- Tue Sep 6 2016