highaltitude.log.20160803

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[00:17] <SpacenearUS> New vehicle on the map: 03hadie - 12https://tracker.habhub.org/#!qm=All&q=hadie
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[00:23] <SpacenearUS> New vehicle on the map: 03nuno1 - 12https://tracker.habhub.org/#!qm=All&q=nuno1
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[02:13] <SpacenearUS> New vehicle on the map: 03car_chase - 12https://tracker.habhub.org/#!qm=All&q=car_chase
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[06:02] <SpacenearUS> New position from 03SP5RZP-11 after 0321 hours silence - 12https://tracker.habhub.org/#!qm=All&q=SP5RZP-11
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[07:42] <fsphil> hadie? that's a silly name for a tracker!
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[08:20] <gonzo_> name from greek mythology?
[08:25] <Vaizki> high altitude die?
[08:25] <Vaizki> ominous
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[08:34] <SpacenearUS> New position from 03VE2WMG-11 after 0312 hours silence - 12https://tracker.habhub.org/#!qm=All&q=VE2WMG-11
[08:35] <fsphil> it's german, high altitude the
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[09:13] <gonzo_> ah. Saves me getting buried in wipipedia looking at the classics
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[09:31] <pb0ahx> !flights
[09:31] <SpacenearUS> 03pb0ahx: Current flights: 03CLEAPSS1 10(964c)
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[09:47] <Laurenceb__> https://gfycat.com/IllWildBactrian
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[09:51] <kokey> what's in the market for SDRs nowadays?
[09:52] <kokey> apart from the usrp and the rtl-sdr
[09:52] <fsphil> lots in-between. airspy (mini), hackrf, bladerf
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[09:54] <fsphil> limesdr is kickstartery, not sure if it's available for sale
[09:54] <mfa298> limesdr, sdrplay, fcd
[09:54] <fsphil> oh yeah and the fcd is still about
[09:55] <mfa298> and I think there's a whole range of other ones that never got that popular
[09:55] <fsphil> yeah. but those mentioned above will pretty much cover all uses
[09:56] <fsphil> it's a well served market
[09:57] <mfa298> limesdr (if you can get it) looked like it might be the better general purpose sdr now (if you want tx as well as rx at least)
[10:00] <fsphil> yeah it's well priced
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[10:01] <Darkside> no filtering mind you..
[10:01] <fsphil> if it's just RX you want, get the airspy mini
[10:01] <Darkside> well, not much filtering
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[10:02] <fsphil> do any of them?
[10:02] <fsphil> I know the fcd+ added some filters for the ham bands
[10:02] <Darkside> yeah
[10:02] <fsphil> dunno about the others
[10:03] <Darkside> fcd+ does, i think sdrplay does
[10:03] <Darkside> airspy seems to manage
[10:03] <Darkside> limesdr is massive overkill if you're just going to be rxing balloons
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[10:08] <mfa298> FCD P+ certainly has some good filters for the ham bands, but then they were targeting weak singals on the 70cms band.
[10:08] <mfa298> the main downside of the FCD P+ these days is the limited sample rate
[10:09] <SA6BSS-Mike|2> yes, quite narrow (192khz) bw compared to the others
[10:09] <SA6BSS-Mike|2> 8-10Mhz bw
[10:11] <SA6BSS-Mike|2> airspy mini is the best choice if its vhf/uhf is of interest, if HF/Vhf/Uhf is interesting go for the sdrplay
[10:11] <mfa298> for a single HAB 192KHz is more than enough
[10:11] <SA6BSS-Mike|2> it it but itc convinient to have more3,
[10:12] Nick change: SA6BSS-Mike|2 -> SA6BSS-Mike
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[10:45] <kokey> thanks, guys
[10:45] <kokey> the SDR thing is nice and fast moving
[10:48] <fsphil> innit
[10:48] <fsphil> I wouldn't have predicted it
[10:49] <mfa298> whoever found out about the rtlsdr hacks has a lot to answer for, I doubt they'de be as popular without that
[11:03] <SA6BSS-Mike> some interesting stuf how it started http://rtlsdr.org/#history_and_discovery_of_rtlsdr
[11:04] <SpacenearUS> New position from 03IV3SRD-11 after 039 hours silence - 12https://tracker.habhub.org/#!qm=All&q=IV3SRD-11
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[11:18] <SpacenearUS> New vehicle on the map: 03JMHS - 12https://tracker.habhub.org/#!qm=All&q=JMHS
[11:22] <SpacenearUS> New vehicle on the map: 03SP6NVB-11 - 12https://tracker.habhub.org/#!qm=All&q=SP6NVB-11
[11:25] <gonzo_> sdr is generally too quick moving for the older lads in AR. Who bleat about changes that make their 25yr old radio obsolete
[11:25] <AndyEsser> dinosaurs
[11:25] <fsphil> they still have a power advantage
[11:25] <fsphil> I was going to say 'ease of use' too, but then I remembered the Yaesu interface
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[11:36] <jakeio> What antennas have people used with the HopeRF LoRa modules? Would just a standard 848MHz stubby suffice?
[11:40] <gonzo_> flying or groundstation?
[11:40] <daveake> Either way a 1/4 wave works well
[11:41] <gonzo_> yep, sdr is still power hungry and needs a PC in most cases. Not great for /m /p
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[11:41] <mfa298> and you don't need anything more advanced than your 1950's HF 80m set to talk about piles
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[11:45] <jakeio> Well, I've actually got my payload sending both 868 and 434MHz transmissions, so what setup would be best for that. I saw yours daveake on your Birthday Balloon - would just doing that be totally fine?
[11:57] <pb0ahx> !payload JMHS
[11:57] <SpacenearUS> 03pb0ahx: Can't find a flight doc matching your query
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[12:31] <SpacenearUS> New position from 03KD0HIP-7 after 033 days silence - 12https://tracker.habhub.org/#!qm=All&q=KD0HIP-7
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[13:42] <SpacenearUS> New vehicle on the map: 03KD9GEG-11 - 12https://tracker.habhub.org/#!qm=All&q=KD9GEG-11
[13:45] <SpacenearUS> New position from 03REGGIE after 0316 days silence - 12https://tracker.habhub.org/#!qm=All&q=REGGIE
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[16:11] <SpacenearUS> New vehicle on the map: 03KE0GEO-11 - 12https://tracker.habhub.org/#!qm=All&q=KE0GEO-11
[16:16] <SpacenearUS> New position from 03KE0GEO-12 after 038 days silence - 12https://tracker.habhub.org/#!qm=All&q=KE0GEO-12
[16:17] <SpacenearUS> New vehicle on the map: 03BALLOONOLO-CHASE_CAR - 12https://tracker.habhub.org/#!qm=All&q=BALLOONOLO-CHASE_CAR
[16:22] <SpacenearUS> New vehicle on the map: 03KE0GEO-13 - 12https://tracker.habhub.org/#!qm=All&q=KE0GEO-13
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[17:56] <SpacenearUS> New vehicle on the map: 03BALLOONOLO-7_LORA - 12https://tracker.habhub.org/#!qm=All&q=BALLOONOLO-7_LORA
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[18:20] <jakeio> Would anyone happen to know why I'm getting this issue with the serial port on the Pi: "SerialException: could not open port /dev/ttyAMA0: [Errno 2] No such file or directory: ' /dev/ttyAMA0'"
[18:21] <PE0SAT> jakeio: Look at the device file ownership
[18:21] <jakeio> Do you mean check that /dev/ttyAMA0 is accessibly by my user?
[18:22] <PE0SAT> For example
[18:22] <PE0SAT> When do you get the error?
[18:22] <jakeio> When trying to open the serial port.
[18:23] <jakeio> Using pyserial.
[18:23] <PE0SAT> what is the output of ls -l /dev/ttyAMA0
[18:24] <jakeio> No such file or directory.
[18:24] <jakeio> Tried that one :P
[18:24] <Oddstr13> ls -alh /dev/tty*
[18:24] <jakeio> ls -alh /dev/tty*
[18:24] <jakeio> Whoops.
[18:24] <jakeio> http://paste.md-5.net/wedivowoke.hs
[18:25] <jakeio> That's the output from that.
[18:25] <Oddstr13> I don't see any serial ports there
[18:25] <Oddstr13> might not be enabled
[18:25] <PE0SAT> First tell us what you try to do
[18:25] <PE0SAT> AMA seems a gps device
[18:26] <jakeio> PE0SAT, it is indeed.
[18:26] <jakeio> Ublox MAX-M8Q.
[18:26] <PE0SAT> via serial or usb?
[18:26] <jakeio> Serial on the GPIO.
[18:26] <jakeio> This code has worked before on a different pi.
[18:26] <PE0SAT> is the getty on the serial disabled
[18:26] <jakeio> It is, yes.
[18:27] <PE0SAT> try dmesg and see if the device is listed
[18:29] <jakeio> OK. I'll just sift through.
[18:29] <Oddstr13> probably missing a kernel module I'd say
[18:30] <PE0SAT> jakeio: dmesg | grep -i tty
[18:30] <PE0SAT> jakeio: dmesg | grep -i ublox
[18:30] <PE0SAT> jakeio: dmesg | grep -i ama
[18:30] <PE0SAT> etc
[18:30] <jakeio> Tried all those.
[18:30] <jakeio> Nothing worthwhile.
[18:31] <jakeio> As you say Oddstr13, probably a kernel module.
[18:31] <PE0SAT> don't think so
[18:31] <Oddstr13> I've got ttyAMA0 on mine
[18:32] <jakeio> ttyAMA0 should be there regardless of whether a device is in.
[18:32] <Oddstr13> nah
[18:33] <PE0SAT> I have a AMA0 on both Pi's
[18:34] <daveake> You have to enable the port in raspi-config
[18:34] <jakeio> I have.
[18:34] <daveake> Then disable kernel use of the port
[18:34] <daveake> And the getty login on the port
[18:34] <Oddstr13> http://raspberrypi.stackexchange.com/a/45571
[18:34] <daveake> The error suggests otherwise
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[18:34] <Oddstr13> did you reboot the pi after doing changes in raspi-config?
[18:35] <Oddstr13> proper reboot, not a pull-power kinda reboot
[18:35] <jakeio> Yes, definitely...
[18:35] <Oddstr13> can we have the content of /boot/config.txt ?
[18:35] <jakeio> Yes.
[18:35] <daveake> Which Pi is this?
[18:36] <jakeio> Latest Zero.
[18:36] <Oddstr13> are those even generally available yet?
[18:37] <jakeio> Yes?
[18:38] <jakeio> http://paste.md-5.net/jorudovulu.vala
[18:38] <Oddstr13> heh, actually in stock on adafruit, amazing
[18:38] <jakeio> enable_uart=0...
[18:38] <jakeio> Oh dear.
[18:38] <jakeio> Sorry guys!
[18:38] <Oddstr13> that was the one I wanted to see ^^
[18:39] <Oddstr13> please refer to the above stackexchange link :)
[18:41] <daveake> :-)
[18:43] <Oddstr13> 40 usd for a camera running linux.. not too bad :P
[18:43] <swaledale> ah, Raspi and serial, our favourite subject :)
[18:43] <Oddstr13> swaledale: hey, atleast it isn't raspi and I2C...
[18:56] <fsphil> did someone mention pi serial ports? oh boy!
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[19:07] <daveake> Grrrrrrrr
[19:07] <daveake> I have it on good authority that they have no plans to mess them up further
[19:08] <fsphil> but no plans to improve them?
[19:09] <mfa298> but then they generally dont tell anyone the plans until it happens :p
[19:13] <daveake> Yeah also no plans to fix
[19:13] <swaledale> Dear Mr Akerman, we pwomise not to be naughty, love from Eben
[19:15] <SpacenearUS> New position from 03JMHS after 037 hours silence - 12https://tracker.habhub.org/#!qm=All&q=JMHS
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[19:30] <gurlavie> Good evening. Wonder if someone can help here. Feeling a bit of an idiot....spent several evenings now trying to get my setup tested: Habduino-> RTS-SDR->UZ7HO/Direwolf->APRSIS32. But don't seem to get it running....
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[20:01] <Ian_> Careful, you can get locked up for feeling idiots
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[20:14] <gurlavie> yes. I am.
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[21:05] <fsphil> depends which bit I guess
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[21:19] <gonzo_> oh no, not another 70's DJ
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[21:45] <fsphil> gurlavie: I'm guessing you're hoping for some help, but you haven't asked a question yet :)
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[21:50] <gurlavie> Right fsphil . The question : how can I debug the Virtual TNC? I see the real-SDR piped into it. But no aprs out to the APRSIS32
[21:51] <gurlavie> Do I need to set the SDR in a special way ?
[21:52] <fsphil> linux by any chance??
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[22:06] <gurlavie> Nop. For now Win. Plan to move to RPI after I will get this working.
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[22:30] <samme> Hey. "Don't bother testing that your tracker works when it crosses a meridian (latitude or longitude)." how can I test this?
[22:32] <mfa298> drive to the grenwich meridian line and try the payload as you cross over it.
[22:32] <mfa298> or you could try feeding it nmea data from both sides and make sure it works
[22:33] <mfa298> or the bad option, plan to not have your payload cross over the meridian line during the flight and do the flight on the same side of the meridian you've tested in
[22:33] <samme> the second option sound doable, but what did u mean by both sides?
[22:35] <mfa298> the median line is where the longitude changes from -ve to +ve numbers (or the W/E letter changes)
[22:35] <mfa298> so you want to test with logitude values ranging on both sides of the meridian line
[22:36] <samme> ohhhhhhh! got it
[22:36] <daveake> <pedant> That's the prime meridian (zero); there's a meridian for every degree </pedant>
[22:37] <daveake> trackers have failed on those too
[22:37] <daveake> especially those
[22:37] <mfa298> I'll blame whoever write the "Don't bother testing ..." line assuming that's a direct quote from the wiki/blog
[22:37] <samme> can this be manually tested?
[22:37] <daveake> yes, me, oops
[22:38] <daveake> no wait, I said "a" not "the" meridian
[22:38] <daveake> I win
[22:38] <mfa298> samme: if your just reading and parsing the nmea data over serial, you could just replace the gps with something spitting out some suitably crafted nmea data
[22:39] <samme> I will give it a try ! Secondly, "Don't test that it reports the altitude correctly above 32,768 metres and below zero metres. Obviously you can only test this by faking the altitude, but that's such hard work that you may prefer not to bother."
[22:40] <samme> any reason for that particular altitude? :P
[22:40] <daveake> yes
[22:40] <mfa298> look at the sizes of various standard ints
[22:40] <fsphil> above or at 32768
[22:40] <daveake> yes
[22:41] <daveake> I think Steve needs to test his for >= 65536 metres
[22:41] <daveake> It's only a matter of time now
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[22:41] <Rharrison_> Hey daveake
[22:41] <daveake> Hey Rob
[22:42] <fsphil> if he gets one above 50km, then he deserves the right to call it "near space"
[22:42] <Rharrison_> I've knocked up a prototype board for Icarus V using the hoperf98W
[22:43] <daveake> "Closer to space than it is to sea level" :)
[22:43] <Rharrison_> I've connected the clock on DIO2 to the ext interrupt pin on the atmega if I need to drive it continuously
[22:43] <daveake> only 5km to go now
[22:43] <Rharrison_> Does that make sense to you?
[22:43] <daveake> dunno never used DIO2
[22:44] <Rharrison_> I've set up SPI obv. and connect pins DSI0-2
[22:44] <Rharrison_> DIO0-2
[22:44] <Rharrison_> Oh well in that case it probably doesn't matter. Do send everything via SPI?
[22:44] <daveake> Aside from the usual SPI pins I've only ever used DIO0 (packet ready / packet sent) and DIO5 (mode change complete)
[22:45] <samme> thanks for the help! :D
[22:45] <Rharrison_> Ok cool. I might be calling on you when I get to the radio bit. I', hoping it's not going to be too hard to get it working with data !!!!
[22:46] <daveake> If you want to send packets > 256 bytes then there's a signal you might want to map to a DIO pin, for "buffer ready for more data"
[22:46] <Rharrison_> It's a hell of a hab packet :-)
[22:46] <daveake> Took me a while, but that was because I used a combination of SF/EC/etc that doesn't work
[22:46] <daveake> (and yes the manual does say so)
[22:47] <Rharrison_> Yep I'v heard the docs arnt too great
[22:47] <daveake> Actually I never managed to send 256. only 255
[22:47] <daveake> which is why my SSDV packets skip one of the 2 signature bytes :p
[22:47] <Rharrison_> Lol :-)
[22:47] <daveake> and my gateway adds the missing one back on :p
[22:47] <fsphil> the first one is sacrafical
[22:48] <daveake> I sacrificed it
[22:48] <Rharrison_> Is it hard to set up or should it be within my grasp? I've learnt I2C and 1 Wire Protocol this week :-)
[22:48] <fsphil> sacrificial* I can almost spell
[22:48] <daveake> Not too bad
[22:48] <fsphil> I like 1-wire, it's a neat system
[22:48] <daveake> Some gotchas like being in sleep mode when you change things
[22:48] <Rharrison_> fsphil, my saleae saved me :-)
[22:49] <fsphil> they're great ain't they!
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[22:49] <fsphil> saved me a few times now
[22:49] <daveake> We've all been saved at least once by those :)
[22:49] <Rharrison_> I made the I2C do the same as the working code on the arduino uno :-)
[22:49] <Rharrison_> opps 1 wire :-)
[22:49] <Rharrison_> DS18B20
[22:50] <Rharrison_> Three of them actually in a chain with rom searching :-)
[22:50] <fsphil> it's the searching bit I like
[22:50] <Rharrison_> Yep that is clever with the tree system
[22:51] <Rharrison_> as you drill down the rom bits
[22:51] <Rharrison_> 24.3C in here to night :-)
[22:52] <fsphil> yeesh
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[23:07] <SpacenearUS> New position from 03IV3SRD-11 after 039 hours silence - 12https://tracker.habhub.org/#!qm=All&q=IV3SRD-11
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[23:32] <SpacenearUS> New position from 03DL7AD-11 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=DL7AD-11
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[00:00] --- Thu Aug 4 2016