highaltitude.log.20180115

[00:06] <SpacenearUS> New vehicle on the map: 03M1413449 - 12https://tracker.habhub.org/#!qm=All&q=M1413449
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[01:16] <SpacenearUS> New position from 03HIRFW-6 after 0319 hours silence - 12https://tracker.habhub.org/#!qm=All&q=HIRFW-6
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[01:31] <SpacenearUS> New vehicle on the map: 03I4613161 - 12https://tracker.habhub.org/#!qm=All&q=I4613161
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[02:27] <SpacenearUS> New position from 03BB04 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=BB04
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[04:00] <SpacenearUS> New position from 03icarusIV after 036 hours silence - 12https://tracker.habhub.org/#!qm=All&q=icarusIV
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[04:39] <SpacenearUS> New vehicle on the map: 03M3343633 - 12https://tracker.habhub.org/#!qm=All&q=M3343633
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[04:49] <SpacenearUS> New vehicle on the map: 03car_chase - 12https://tracker.habhub.org/#!qm=All&q=car_chase
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[05:44] <labjg> Hey Darkside: Possible flight on Wednesday fyi, released from Mt Stromlo
[05:44] <labjg> Will submit flight doc tomorrow if it's a go
[05:56] <Darkside> huh, from stromlo!
[05:57] <Darkside> prediction looks good
[05:58] <Darkside> what are you flying?
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[08:28] <SpacenearUS> New vehicle on the map: 03mwheeler_car_chase - 12https://tracker.habhub.org/#!qm=All&q=mwheeler_car_chase
[08:31] <Darkside> mwheeler: going for the ozone sonde?
[08:32] <Darkside> lol yep
[08:32] <fsphil> hehe
[08:32] <fsphil> sonde addiction
[08:32] <Darkside> yep
[08:33] <fsphil> I'll probably have to wait until spring before one lands nearby
[08:35] <fsphil> last nights landed not a huge distance from where I lost my second flight
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[08:45] <Darkside> hmm they've been stationary for a while
[08:45] <craag> I think I need another splitter on the farnham websdr 70cm feed.. currently missing a lora rx and a sonde rx.
[08:46] <Darkside> heh
[08:49] <fsphil> I wonder how many rtlsdrs a single Pi could use, anyone tried more than one?
[08:50] <craag> Maybe more than one at low symbolrates?
[08:50] <craag> For this I could probably put another rtlsdr into the host PC and do it on there.
[08:51] <craag> richardeoin: Have you got any more bpsk flights planned?
[08:52] <fsphil> just pondering what I can get away with for the pi on solar
[08:52] <fsphil> two rtlsdrs, one for sondes and another for general rtty flights
[08:52] <fsphil> lora has its own receiver so that's fine
[08:53] <fsphil> I shall experiment later
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[09:25] <Darkside> hrm im hoping they are walking into that field and not driving
[09:27] <vaizki> craag, that reminds me.. have you noticed that all those nice lots of rf splitters seem to have disappeared off ebay or the prices have jumped sky high...
[09:27] <craag> I haven't had reason to buy any for the last couple of years tbh, but thanks for the warning!
[09:28] <craag> I think we're just using tested-good satellite tv splitters on the sdr
[09:29] <vaizki> yea the 75 ohm impedance doesn't seem to be a problem on rx
[09:29] <craag> https://www.flickr.com/photos/philcrump2/23757645935/in/album-72157660085973083/
[09:30] <vaizki> so what's the big black box?
[09:30] <craag> yep, plenty of stable gain in front of it and it works. Did blow up a couple of SPF's before switching to PGA's though
[09:31] <craag> 6x rtlsdrs + usb filtering
[09:31] <craag> individually shielded in a metal box :)
[09:31] <gonzo_> at least the met office are still mad enough to launch for us
[09:31] <vaizki> umm spf? acronym escapes me
[09:32] <craag> erm spf5189, popular wideband lna device
[09:32] <vaizki> ah right
[09:32] <craag> a bit fragile though
[09:32] <craag> pga-103+ is a hardier replacement
[09:33] <gonzo_> just using a T splitter will be a missmatch, but still nothing to worry about. If it;s after the LNA
[09:33] <craag> These are resistive splitters
[09:34] <fsphil> hehe, I didn't think of using a tv splitter
[09:34] <gonzo_> I meamt simple T adaptor
[09:34] <fsphil> I've a few sitting around doing nothing
[09:34] <fsphil> AC power though, but I'm sure that can be modified
[09:35] <gonzo_> ac?
[09:35] <fsphil> only problem is that horrible uhf connector
[09:35] <fsphil> yeah it's mains powered
[09:35] <craag> sat tv splitters
[09:35] <craag> f-types :)
[09:35] <fsphil> huh, I didn't know that was a thing
[09:35] <craag> (better than uhf at least!)
[09:35] <fsphil> oh much so
[09:35] <gonzo_> I hope by mains, you mean that they use a txfmr and put LV DC up the coax?!
[09:36] <gonzo_> LV AC
[09:36] <fsphil> no, just a mains cable into the box
[09:38] <fsphil> http://cpc.farnell.com/slx/28103hsg/amplifier-tv-radio-slx-gold-4/dp/AP02481
[09:38] <fsphil> something like that
[09:38] <fsphil> woo, build in tetra filter
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[10:15] <Laurenceb> !whereis HIRFW-6
[10:15] <SpacenearUS> 03Laurenceb: 03HIRFW-6 was over 03North Pacific Ocean 10(45.48107,164.96215) at 0311999 meters about 036 hours ago
[10:15] <fsphil> eternahab
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[10:44] <daveake> Not too shabby
[10:57] <gonzo_> who are the icarus people?
[10:58] <SpacenearUS> New position from 03DC2EH-11 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=DC2EH-11
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[11:17] <SpacenearUS> New vehicle on the map: 03M4533247 - 12https://tracker.habhub.org/#!qm=All&q=M4533247
[11:18] <SpacenearUS> New vehicle on the map: 03M2543302 - 12https://tracker.habhub.org/#!qm=All&q=M2543302
[11:21] <SpacenearUS> New vehicle on the map: 03M4443027 - 12https://tracker.habhub.org/#!qm=All&q=M4443027
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[11:39] <SpacenearUS> New position from 03RSIST after 0310 hours silence - 12https://tracker.habhub.org/#!qm=All&q=RSIST
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[12:47] <mwheeler> Darkside: ah yeah we were walking. I always forget to turn off the chase car app lol
[12:48] <mwheeler> It was a cane field that had been cleared so pretty easy going
[12:56] <Ian_> That would have been real fun as a growing cane field. Permissions notwithstanding. :)
[12:58] <gonzo_> just walk around the GPS location with a stick in the air and try and catch the string?
[13:01] <Ian_> Easily said gonzo I suspect that it would be a bit tight in there, but have never been in a large (or small) cane field. but good idea - don't forget the nail/hook/catchy-bit on the end of the stick . . .
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[13:02] <SpacenearUS> New vehicle on the map: 03M4453007 - 12https://tracker.habhub.org/#!qm=All&q=M4453007
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[13:30] <gonzo_> snap, never seen one. Assumed it's a bit like a mature sweetcorn field
[13:31] <gonzo_> finding a HAB in any crop can be a pain. Snagging the cord on your legs seems to be a popular way of finding them
[13:31] <gonzo_> I've only done trees and a couple of ploughed fields
[13:32] <daveake> I've done maize ... walking into the payload line was the way
[13:33] <gonzo_> at least gps can get you within a few mtrs
[13:34] <craag> took us a while once when the tracks in the cornfield didn't quite match with those in the satellite image :P
[13:34] <gonzo_> one recovery, was walking around in the dark, trying to get the gps values to match the last telem posn. Looked up and it was within arms reach
[13:34] <SpacenearUS> New vehicle on the map: 03M4523827 - 12https://tracker.habhub.org/#!qm=All&q=M4523827
[13:34] <gonzo_> payload on floor, one foil still floating. But didn't see it till right on top of it
[13:36] <daveake> Yesterday's was easy to spot - I remembered to use some pink (c) Upu tape on it :)
[13:39] <gonzo_> I missed that, what was the recovery?
[13:41] <mwheeler> If it landed in sugar cane fields like I've been to in Bundy then it wouldn't really be recoverable. Not until they burn it
[13:42] <daveake> It was 20m from a road, in a field, no fence
[13:42] <daveake> no tanks
[13:43] <mwheeler> Nice
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[14:15] <gonzo_> tanks for that
[14:24] <daveake> I just followed the tracks
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[14:43] <gonzo_> you were out gunned?
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[15:17] <SpacenearUS> New vehicle on the map: 03Kim_chase - 12https://tracker.habhub.org/#!qm=All&q=Kim_chase
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[15:54] <SpacenearUS> New vehicle on the map: 03BERKOHAB - 12https://tracker.habhub.org/#!qm=All&q=BERKOHAB
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[16:23] <balloonatic> Hello everyone. I have just received my pits board and LoRa board. So set things up on the same frequency and booted both, but the gateway does not seem to be picking anything up.
[16:23] <balloonatic> I haven't built a specific aerial yet and so I am just using a wire, but they are right next to each other on the desk.
[16:23] <PE2BZ> Hello balloonatic 2 Pi´s or one ?
[16:24] <balloonatic> 2 pi's. One for gateway one with pits board.
[16:25] <PE2BZ> Can you pastebin the gateway.txt for the RX side and the ?boot.txt if I recall right ? for the tx part ?
[16:25] <PE2BZ> 2 wires should shurely do for that distance
[16:26] <balloonatic> Sure. One moment. Will need to reboot both.
[16:26] <PE2BZ> And both have one RFM module on CE0 ?
[16:27] <balloonatic> I would expect it to work even without an aerial right?
[16:27] <balloonatic> Pits has one (pits zero) the gateway has two. But a 434 module in CE_0
[16:28] <PE2BZ> 10 mW tx without antenna mostly doesn´t harm the transmitter chip, but I would use 16 cm wire or something like that
[16:28] <PE2BZ> and on the rx lora part, what is the reported rssi ?
[16:28] <balloonatic> Incidentally the gateway UI says "434.430.0 MHz"
[16:28] <balloonatic> All screenshots I have seen have "434.4500MHz"
[16:29] <balloonatic> Reported rssi?
[16:29] <PE2BZ> But the lora tracker reports a rssi, left bottem corner
[16:29] <PE2BZ> -150 or -160 points me to a problem
[16:30] <balloonatic> Oh, I don't know. That is not connected to a monitor currently. (Only have one)
[16:30] <PE2BZ> Current RSSI =
[16:30] <PE2BZ> Monitor ? SSH ....
[16:30] <balloonatic> It's a pi Zero. So no connection
[16:30] <balloonatic> One sec I will get it plugged in.
[16:30] <PE2BZ> 4 Pi´s running, all to far away for a monitor. pi Zero without wifi ?
[16:32] <balloonatic> Yeah, the pits board ships with a standard pi zero. I believe the WiFi must be disabled in order for the board to work anyway.
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[16:37] <balloonatic> Where do I see this rssi?
[16:37] <balloonatic> I have the tracker software running...
[16:38] <daveake> The gateway shows RSSI
[16:38] <daveake> Have you configured the gateway.txt file to use CE0 ?
[16:38] <balloonatic> Oh ok. I will boot that back up.
[16:39] <balloonatic> Yes I have. I may have spotted the issue though. The default pisky.txt is configured with CE1. But it only has one LoRa board.
[16:39] <balloonatic> I guess that should be on CE0
[16:39] <daveake> Yes
[16:40] <daveake> It used to be that boards were populated in CE1 only, so I guess that's changed
[16:40] <balloonatic> Ok. I will give this a go now.
[16:40] <daveake> There used to be a conflict with a device on the standard PITS board which used CE0, which is why CE1 was used.
[16:41] <balloonatic> How come the pits zero board has different aerial sockets for the LoRa and RTTY
[16:41] <daveake> Because using one aerial for two transmitters is a bad thing
[16:42] <balloonatic> I figured it would be. But the full size pits board looks like it uses only one aerial.
[16:42] <daveake> It only has one transmitter
[16:42] <balloonatic> Oh ok.
[16:43] <balloonatic> Booted the gateway back up and still not seeing rssi.
[16:43] <daveake> screenshot please
[16:43] <balloonatic> What is the best way to upload it?
[16:43] <daveake> imgur
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[16:45] <PE2BZ> ¨not seeing rssi¨ means not even the text ¨Current RSSI¨ ?
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[16:46] <balloonatic> Nope. Screenshot on its way
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[16:48] <PE2BZ> still waiting for the gateway.txt and boot.txt ;-)
[16:48] <balloonatic> https://i.imgur.com/CWDzOA9.jpg
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[16:49] <PE2BZ> And the Gateway is a normal Pi with 2 modules ?
[16:50] <daveake> That's not seeing the LoRa module in CE0
[16:50] <balloonatic> Hmm. Maybe the connections are poor or something. Let me make sure all the interfaces are enabled again.
[16:51] <daveake> You'd get an error message from it if SPI wasn't enabled.
[16:51] <balloonatic> Ok. I will check physical connections. Though the LoRa board just slots on...
[16:52] <PE2BZ> If the gateway has 2 rfm modules, enable both in the gateway, that would not harm
[16:53] <PE2BZ> I am away for cooking for a while
[16:53] <daveake> he said it has one in CE0
[16:53] <balloonatic> Do I need to disable the BT on a pi 3 like if I was using a pits
[16:53] <daveake> no
[16:53] <balloonatic> I do have two, but the module in CE1 on the gateway is a different frequency.
[16:56] <balloonatic> Ok hang on. I have just pulled it off and put it back on and now the LEDs on top have lit up.
[16:56] <balloonatic> Looks more promising.
[16:57] <balloonatic> Ok now I have a much better screen in the gateway.
[16:57] <balloonatic> Current RSSI is -132
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[16:58] <balloonatic> Still no packets though.
[16:59] <daveake> Same frequency set in pisky.txt on PITS, and gateway.txt on gateway ?
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[17:00] <balloonatic> Yes
[17:00] <daveake> same mode ?
[17:00] <balloonatic> Should I be concerned at the double decimal point.
[17:00] <daveake> No that's someone else's code edit
[17:01] <balloonatic> Yes, I have tried setting the gateway to mode 1 and mode 5 for the auto tune
[17:01] <daveake> No, mode 1 on both
[17:01] <balloonatic> Yeah, have tried that.
[17:01] <daveake> mode 5 is not auto-tune; it's for a calling mode, which you're not using
[17:02] <daveake> So with exact same settings on both, what's the RSSI doing ?
[17:03] <balloonatic> I have calling frequency set in the pisky.txt too. But I will try and get exact same settings working first.
[17:03] <daveake> No don't do that, just use basic settings till it works
[17:03] <balloonatic> Rssi is fluctuating around -130
[17:03] <daveake> no signal on that frequency then
[17:04] <balloonatic> Hmm. Very odd
[17:06] <daveake> Post your pisky.txt and gateway.txt files please
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[17:06] <daveake> pastebin
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[17:06] <balloonatic> Sure. Give me a moment to get them transferred and uploaded.
[17:11] <balloonatic> HTTPS://pastebin.com/bWRB1zKS
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[17:12] <daveake> ok
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[17:12] <balloonatic> pastebin.com/8M9qR2X5
[17:14] <daveake> And both files are currently in use? e.g. you restarted the tracker after the last change?
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[17:15] <balloonatic> I believe so
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[17:16] <balloonatic> Should I try with a better aerial?
[17:16] <balloonatic> Is there an easy way to make one as my real ones haven't arrived yet.
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[17:18] <balloonatic> Ok, if I run the tracker software in the foreground, it seems to have only sent one LoRa message and then lots of RTTY messages
[17:18] <daveake> You don't need an aerial
[17:18] <daveake> OK in that case the lora is not configured properly.
[17:19] <daveake> I don't recall if pits zero uses ce0 or ce1
[17:19] <daveake> Upu ^^
[17:19] <balloonatic> I will switch over
[17:19] <daveake> yeah worth a try
[17:20] <daveake> The default pisky.txt should have been set for the correct ce channel
[17:20] <balloonatic> Ok lots of LoRa transmissions. Let me check the gateway after a reboot.
[17:20] <daveake> ok
[17:20] <daveake> Well just restart the gateway prog
[17:20] <daveake> No need to reboot
[17:21] <balloonatic> Well rssi is still -132 if that matters but currently 22 telem packets received.
[17:22] <daveake> hmmmmmmm
[17:22] <daveake> aerials ?
[17:22] <balloonatic> Oh wait. The pits has shut down
[17:23] <daveake> -132 isn't enough signal to receive (not with the mode 1 settings anyway)
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[17:23] <hopej> Sorry was disconnected.
[17:23] <hopej> Now receiving regular packets. (Though incorrect timestamp)
[17:23] <hopej> Rssi is -115
[17:25] <daveake> timestamp needs gps lock
[17:25] <hopej> Ok. Testing that now then.
[17:27] <hopej> Moved pits to a window so just waiting for lock.
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[17:27] <daveake> ok
[17:27] <hopej> Should it then automatically upload to habhub tracker?
[17:27] <daveake> You need a payload doc
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[17:28] <daveake> https://ukhas.org.uk/guides:documents
[17:28] <hopej> Ahh ok.
[17:28] <daveake> http://www.pi-in-the-sky.com/index.php?id=getting-on-the-map
[17:28] <hopej> I thought that was only RTTY
[17:28] <daveake> no
[17:28] <hopej> Cool
[17:29] <daveake> There's no point filling in the rtty section (baud rate etc) as none of it applies
[17:31] <hopej> Ok, getting GPS data but the time stamp is still wrong.
[17:31] <hopej> It might be that the gateway pi cannot access the time servers behind our firewall
[17:31] <daveake> Wrong ??
[17:32] <daveake> Oh you mean the logged time
[17:32] <daveake> Yeah just set the time in the Pi
[17:32] <daveake> The telemetry time comes from the PITS GPS
[17:32] <daveake> And the time in the PITS Pi is set from the GPS too
[17:38] <SpacenearUS> New vehicle on the map: 03MILLFIELD - 12https://tracker.habhub.org/#!qm=All&q=MILLFIELD
[17:39] <daveake> woo :)
[17:39] <hopej> Yay!
[17:40] <hopej> Blimey. I'd make it to France if I set off now!
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[17:41] <daveake> Yeah, typical winter wind
[17:41] <hopej> That's why we are waiting until may!
[17:41] <daveake> yeah winter is mostly not good
[17:41] <hopej> Phew. Now to sort out aerials.
[17:41] <daveake> anything will work for indoor testing
[17:42] <hopej> Involves some stripping and soldering. But I'll let the kids do that.
[17:42] <hopej> Yeah, will fashion something very simple for the indoor tests.
[17:44] <hopej> But need a good one for outdoor tests.
[17:44] <hopej> We will probably do some hide and seek games with it!
[17:44] <hopej> Check they can follow the trail
[17:52] <hopej> Right time to head home for me.
[17:52] <hopej> Thanks is for all the help. Much appreciated.
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[20:08] Nick change: pe2bz__ -> PE2BZ
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[20:27] <SpacenearUS> New position from 03BB04 after 0318 hours silence - 12https://tracker.habhub.org/#!qm=All&q=BB04
[20:36] <SpacenearUS> New vehicle on the map: 03loan from hell_chase - 12https://tracker.habhub.org/#!qm=All&q=loan%20from%20hell_chase
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[20:51] <Laurenceb_> !whereis HIRFW-6
[20:51] <SpacenearUS> 03Laurenceb_: 03HIRFW-6 was over 03North Pacific Ocean 10(45.48107,164.96215) at 0311999 meters about 0316 hours ago
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[21:14] <SpacenearUS> New position from 03HIRFW-6 after 0317 hours silence - 12https://tracker.habhub.org/#!qm=All&q=HIRFW-6
[21:40] <Laurenceb_> !whereis HIRFW-6
[21:40] <SpacenearUS> 03Laurenceb_: 03HIRFW-6 is over 03North Pacific Ocean 10(46.52274,-177.95452) at 0312221 meters
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[22:20] <labjg> Any chance daveake is there?
[22:21] <daveake> none at all
[22:21] <labjg> good
[22:21] <labjg> :)
[22:21] <labjg> if you see him, ask whether he can help..
[22:21] <fsphil> we replaced him with a bot
[22:21] <fsphil> davebot
[22:22] <labjg> got a student here who's written an 'improved' (maybe) prediction algorithm for the PITS board
[22:22] <daveake> improved by doing what ?
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[22:23] <labjg> runs in python, reads latest telemetry string from telemetry.txt, writes predicted lat,long to prediction.txt
[22:23] <daveake> yeah but what is it doing to improve the result ?
[22:26] <labjg> wondering how much of a job it would be recompiling pits code to send an 'XX' string with his prediction instead of yours, but still logging yours as a comparison
[22:26] <labjg> oh..
[22:27] <daveake> You don't need to recompile ... there's an option for PITS to read a CSV file and add the last line from that to the telemetry
[22:27] <labjg> in normal operation, not much. the plan is to expand this to deal with things like tow balloons, floating balloons etc
[22:28] <labjg> oh cool
[22:28] <daveake> So if you write your values to the CSV file, and configure PITS to read it (I think it's external_data=thingy.csv) then it'll read the last line and add to telemetry
[22:28] <labjg> to same string?
[22:28] <richardeoin> craag: no flights planned I'm afraid
[22:28] <labjg> to same string as regular telem?
[22:28] <daveake> It adds the CSV to the telemetry string
[22:28] <labjg> ok
[22:29] <labjg> hard to plot on the habhub map tho?
[22:29] <daveake> tbh for a parachute I doubt you'll improve much. The main thing is it seems to be a bit sensitive to vertical GPS noise so that needs a bit more filtering
[22:29] <daveake> Nah you can generate an XX payload yourself
[22:30] <daveake> Grab telemetry from habhub, regenerate XX payload sentence
[22:30] <daveake> There's a script for that in my github
[22:30] <labjg> ooh ok
[22:30] <richardeoin> craag: I've learnt quite a bit more about the trade-offs in low-IF receivers recently though, so I may try bench testing the ax5243 again to work out where the ~10dB of performance went
[22:30] <daveake> put it there today :)
[22:30] <labjg> heh, excellent
[22:31] <daveake> I have asked for XX1, XX2 etc on the map :)
[22:31] <labjg> that would be handy :D
[22:32] <daveake> I used that script for yesterday's flight
[22:33] <daveake> It was closer than the snus prediction till just before landing
[22:33] <labjg> so to be clear: i can run this script on my office computer, then as long as there is a payload with the correct id, with a telem string including specifically 'pred_lat' and 'pred_long' fields, it will do the rest?
[22:34] <daveake> yeah run it wherever - it downloads from and uploads to habhub
[22:35] <daveake> The one XX payload ID is going to be an issue if this gets used much
[22:35] <labjg> too right
[22:36] <labjg> fewer HABers in Oz thankfully :P
[22:36] <daveake> heh yes you have an advantage there :D
[22:39] <labjg> thanks for the help!
[22:40] <fsphil> fewer, but they're good ones
[22:41] <labjg> \m/
[22:42] <daveake> Well except for that Darkside guy he never does anything new :p
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[23:19] <SpacenearUS> New vehicle on the map: 03N1650343 - 12https://tracker.habhub.org/#!qm=All&q=N1650343
[23:21] <SpacenearUS> New vehicle on the map: 03M2513087 - 12https://tracker.habhub.org/#!qm=All&q=M2513087
[23:22] <SpacenearUS> New vehicle on the map: 03M4443002 - 12https://tracker.habhub.org/#!qm=All&q=M4443002
[23:22] <fsphil> oh tonights local launch might land near Upu
[23:35] <SpacenearUS> New position from 03IV3SRD-11 after 03a day silence - 12https://tracker.habhub.org/#!qm=All&q=IV3SRD-11
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[23:40] <SpacenearUS> New position from 03RSIST after 0310 hours silence - 12https://tracker.habhub.org/#!qm=All&q=RSIST
[00:00] --- Tue Jan 16 2018