highaltitude.log.20150227

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[05:18] <Haxxa> SO I just got my sensor back from antartica and its covered in a werid grey coating can I post a picture for anyway to offer a suggestion?
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[06:56] <x-f> permission granted
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[07:28] <SpacenearUS> New position from 03PI_SKY_PLUS after 034 days silence - 12http://tracker.habhub.org/#!qm=All&q=PI_SKY_PLUS
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[07:51] <Vaizki> phileas fogg would be proud... Leeds-Sydney in 4 days!
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[08:27] <SpeedEvil> Haxxa: did it work?
[08:28] <Haxxa> SpeedEvil BAtteries are almst fully charged only 20 entries recorded on eeprom - so it failed
[08:28] <SpeedEvil> MOAR solar
[08:28] <SpeedEvil> Oh - misread
[08:28] <Haxxa> SpeedEvil I am comparing Data now to see if data has any releveance to recorded data by expenive equiptment
[08:29] <Haxxa> checking data right now
[08:29] <SpeedEvil> :/
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[08:37] <infaddict> Bah my HK seller has let me know on SDR dongle. Gonna order a UK one today. Does this look ok for 434Mhz (with a HabAmp): http://www.ebay.co.uk/itm/Digital-DVB-T-USB-TV-RTL-SDR-FM-DAB-Radio-Tuner-Receiver-Stick-RTL2832U-R820T-/300954954160?pt=LH_DefaultDomain_3&hash=item46125029b0
[08:38] <infaddict> Also this one with a BNC pigtail: http://www.ebay.co.uk/itm/Newsky-RTL2832U-TV28T-R820T-USB-Stick-plus-BNC-pigtail-Use-with-HD-SDR-Software-/121573309183?pt=LH_DefaultDomain_3&hash=item1c4e557aff
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[08:44] <infaddict> Or I could just buy a FCBP+ but trying to safe money ;-)
[08:44] <infaddict> *save
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[08:49] <fsphil> does cosycave still sell them? I got both mine from there
[08:50] <Vaizki> I don't know if it was wise but I got one of these, http://www.ebay.co.uk/itm/Newsky-RTL2832U-R820T2-RTL-SDR-SMA-BNC-COAX-DAB-FM-MCX-socket-SPECIAL-DONGLE-/121574210111?
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[08:54] <SA6BSS> yes, go for a r820t2 dongle, as Vaizki sugested
[08:54] <Vaizki> I also have an airspy though which is a whole different beast even though it uses the same R820T2
[08:55] <SA6BSS> another uk seller http://www.ebay.co.uk/itm/NEW-SDR-RTL2832U-R820T2-USB-DVB-T-and-RTL-SDR-Receiver-25-1700-MHz-/111596649378?pt=LH_DefaultDomain_3&hash=item19fbadbba2
[08:55] <Vaizki> "This is probably the only R820T2 dongle available in a black case."
[08:55] <Vaizki> what a unique selling point :D
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[09:09] <SA6BSS> Vaizki: or a clarification that it realy is a t2 chip inside
[09:16] <Vaizki> Yes, i have not lopked inside yet
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[09:24] <SpacenearUS> New vehicle on the map: 03PiParty - 12http://tracker.habhub.org/#!qm=All&q=PiParty
[09:37] <infaddict> thx guys will take a look. so the R820T2 is better than RTL2832U?
[09:39] <Darkside> err
[09:39] <Darkside> RTL2382 is the ADC -> USB chip
[09:39] <Darkside> R820T is the tuner
[09:39] <Darkside> both go together
[09:39] <Darkside> i think in general R820T2>R820T>E4000>FC0013
[09:40] <Darkside> for the tuner chips
[09:41] <infaddict> ok great thx for explaining Darkside
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[09:42] <infaddict> fsphil: cosycave is a good shout: https://www.cosycave.co.uk/product.php?id_product=323
[09:42] <infaddict> UK seller with UK first class delivery too
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[09:53] <infaddict> ok ordered from them lets see what its like when it arrived. thx everybody.
[10:03] <SpacenearUS> New position from 03K6RPT-11 after 032 days silence - 12http://tracker.habhub.org/#!qm=All&q=K6RPT-11
[10:04] <craag> !whereis K6RPT-11
[10:04] <SpacenearUS> 03craag: 03K6RPT-11 is over 03English Channel 10(49.86745,-4.2195) at 0311604 meters
[10:06] <SpacenearUS> New vehicle on the map: 03Ps-36_chase - 12http://tracker.habhub.org/#!qm=All&q=Ps-36_chase
[10:06] <Vaizki> I have one of the older R820T dongles and the new R820T2.. maybe I should run some comparison on them
[10:06] <Vaizki> I don't expect the different to be huge but every bit helps
[10:08] <Vaizki> (not that I am qualified to review anything related to RF)
[10:12] <infaddict> just done first car test of flight computer. 10 mile journey back from work and just uploaded to google maps and looks spot on.
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[10:28] <Vaizki> infaddict, you logged onto sd-card then?
[10:29] <lz1dev> craag: hysplit off by an hour :D
[10:29] <craag> :)
[10:30] <infaddict> Vaizki: yes i did, but also had laptop in car with serial debug so just cut and pasted from serial into Excel then imported into Google Maps
[10:31] <Vaizki> right.. well I am taking a week off from any dev as I'm going to be in Barcelona all of next week
[10:31] <infaddict> nice, enjoy
[10:31] <Vaizki> yea I will enjoy the hard concrete floors of the convention center
[10:32] <infaddict> i got the "last known fix" working sweet too
[10:32] <Vaizki> maybe I will take my airspy with me to BCN so I can finally be able to track a launch ;)
[10:33] <Vaizki> I just don't have a very portable antenna yet
[10:34] <Vaizki> http://www.diamondantenna.net/x50na.html
[10:34] <Vaizki> that's my smallest antenna for 433MHz :)
[10:35] <infaddict> 5.6ft!
[10:35] <theRealSIbot> In real units: 6 ft = 1.83 m
[10:35] <Vaizki> thanks
[10:35] <Vaizki> yea it's not a portable antenna at all
[10:36] <infaddict> next stop for me is a battery powered test in the car. i'll do that tonight.
[10:36] <infaddict> then need to decide if i make my first flight a vera/protoboard or go whole hog and design a PCB
[10:37] <Vaizki> hmm I just remembered I actually have a 433MHz rubber ducky
[10:38] <Vaizki> came with a home automation usb-connected radio :)
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[11:39] <gonzo__> a bit of wire is you best payload antenna for 434meg
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[11:54] <Vaizki> gonzo__, yes but I meant for the receiver
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[12:40] <Matt_PrjHet> Hello wonderful helpful HAS people :D
[12:41] <craag> sounds like somebody wants something.. ;)
[12:42] <Matt_PrjHet> Ha ha... how did you guess?
[12:43] <Matt_PrjHet> Any idea why I might be getting a single tone from my PiTS rather than two tone telemetry?
[12:44] <daveake> Did it work before? Changed anything?
[12:46] <Matt_PrjHet> I'm just getting to the point of seeing it for the first time. Basically, I've got all the software download (SDR, Virtual cable, dl-fldigi) - I've picked up a local radio station, now I'm trying to tune into my PiTS for the first time.
[12:47] <daveake> Did you follow all the steps on the SD creation page?
[12:47] <daveake> esp the one about freeing up the serial port?
[12:51] <Matt_PrjHet> I used the pre-built image. Let me check out the build your own page and see if I can see what you mean...
[12:52] <daveake> Make a new one; that's ancient
[12:52] <daveake> I removed the link a while back; thought I'd deleted the file too
[12:53] <Matt_PrjHet> Ah...
[12:54] <Matt_PrjHet> Here's what I'm getting if you can open the link. https://www.dropbox.com/sh/4nb8kifw5ytoj20/AACgmz4qrR1Kv1KpzuNO_pNra?dl=0
[12:56] <daveake> Which PITS card do you have?
[12:58] <Matt_PrjHet> PiTS+
[12:59] <daveake> The image is for the old card
[12:59] <daveake> Create a new image using the instructions at http://www.pi-in-the-sky.com/index.php?id=sd-card-image-from-scratch
[13:01] <Matt_PrjHet> Gotcha, I'm just on that page now. About to start.
[13:01] <daveake> cool
[13:01] <daveake> Take care not to miss any steps :)
[13:03] <Matt_PrjHet> I've had 2 cups of coffee for absolute concentration :D I've just seen your tweet about 3 boards going up on March 20th. Will you be photgraphing the eclipse? I was hoping to give that a go if we're ready by then...
[13:04] <Vaizki> umm why do you have to disable devtree for newer raspbians only? :O
[13:05] <daveake> because it was added to and enabled by default in new raspbians only
[13:06] <daveake> 20th yes ofc :)
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[13:07] <Vaizki> oh ok.. sorry not a raspbian user. so the kernel supports both models, board support old style and DT? that's interesting
[13:07] <daveake> Since the 30th Jan release
[13:08] <Vaizki> I have been soaked in the DT pain with BBB only :)
[13:09] <Vaizki> well it's not pure pain, I see the light but it's a bit blinding
[13:10] <Matt_PrjHet> But first... It appears my 16Gb SD thinks it's 56MB. I'm downloading SDformatter to flatten it.
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[13:12] <Matt_PrjHet> Ah that's better... :)
[13:12] <daveake> No need - that's just the FAT partition. Just write the new image
[13:16] <Matt_PrjHet> Oh, oh well. It's done anyway. I'm just downloading Rasbian. The link to the Pre-built image is still here by the way: http://www.daveakerman.com/?page_id=1567
[13:19] <Matt_PrjHet> I don't know if it makes any difference, but it was the pre-built image that sold me on the PiTS. I've not done this sort of thing before and that OTB functionality was a big selling point.
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[13:21] <Paul-M0PFX> Hi all, Sorry if this has been asked before. Is there a balloon transmitting on 433.500. Hearing a tone and voice reading out temp, voltage, and altitude.
[13:22] <Matt_PrjHet> Now I'm here, I'm enjoying the tinkering, especially as you're here to answer questions Dave - but if you weren't I'd be really struggling!
[13:23] <craag> Paul-M0PFX: Not one that I'd heard about - sounds like a really old sonde.
[13:23] <Paul-M0PFX> its transmitting now, picking it up in essex
[13:23] <Matt_PrjHet> I guess what I'm saying is the pre-built image is great for N00Bs like me who aren't neccassarily into to tech, but right now, more importantly, thanks for the help, I owe you a beer!
[13:23] <Vaizki> what altitude is it reading out?
[13:23] <craag> Can't see it on the websdr.
[13:24] <craag> Record it :)
[13:24] <daveake> The pre-built image is a PITA - I'd have to rebuild when raspbian changes for example
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[13:24] <daveake> and if you go through the build process at least you have an idea about how it's put together
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[13:26] <Paul-M0PFX> i have a video but its on fb. need to get it on youtube
[13:26] <Paul-M0PFX> i think it says 1000m or ft i am not sure as its not a very strong signal
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[13:27] <craag> Does it seem to be ascending?
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[13:58] <Paul-M0PFX> it keeps saying 1000m and temp is 3c which sounds odd
[13:58] <Paul-M0PFX> must be someone testing something
[13:58] <Paul-M0PFX> would be just better if it wasn't done on 433.500 the call freq
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[14:04] <craag> Heh yes - we do attempt to avoid those frequencies! I guess it's either a re-tuned old sonde, or someone's actually made a DIY speaking-tracker!
[14:05] <craag> PITS Feature Request: TTS Audio output, just connect an NTX2 to audio output for FM Voice tracking!
[14:06] <daveake> echo "We will give this request full consideration" | text_to_speech
[14:06] <craag> :D
[14:28] <mattbrejza> tbh rtty over fm didnt work too badly
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[14:46] <Laurenceb> im not sure if im reading the onion
[14:47] <Laurenceb> http://www.bbc.co.uk/news/uk-scotland-highlands-islands-31656935
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[14:50] <mattbrejza> well that explains todays xkcd
[14:51] <infaddict> that crap has clogged up my feeds today
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[14:55] <Laurenceb> lol your feeds
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[15:27] <Vaizki> that blue-black-white-gold thing.. totally out of control.
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[15:28] <Vaizki> Sony Entertainment Finland put out a press release of a white & gold special edition controller. whis is blue & black in the image..
[15:28] <Vaizki> they're a month early the lot of them
[15:29] <Laurenceb> does anyone have the uk geofence that used to be at
[15:29] <Laurenceb> https://www.dropbox.com/s/c4avx6i7ppigz35/uk_geofence.kml
[15:30] <Laurenceb> dunno if Upu created it or what?
[15:30] <Laurenceb> the kml file
[15:30] <UpuWork> https://github.com/Upuaut/APRS_Projects/blob/master/Pico92/geofence.h
[15:30] <UpuWork> https://github.com/Upuaut/APRS_Projects/tree/master/Data
[15:33] <UpuWork> Leo redid it
[15:33] <UpuWork> his was tighter
[15:33] <UpuWork> but more complex I think
[15:34] <UpuWork> https://maps.google.co.uk/maps?q=https://raw.github.com/Upuaut/APRS_Projects/master/Data/Europe.kml&hl=en&sll=52.8382,-2.327815&sspn=7.622047,20.083008&t=h&z=3&output=classic&dg=feature
[15:39] <Laurenceb> oh very nice
[15:39] <Laurenceb> thanks
[15:39] <mattbrejza> the geofence can take up more space when the rest of the code is in assembler ;)
[15:40] <mattbrejza> and therefore not using arduino libraries...
[15:40] <Laurenceb> heh
[15:40] <Laurenceb> im running on arm
[15:40] <mattbrejza> and so have 4x the flash as the avr of the same price
[15:41] <Laurenceb> no
[15:41] <Laurenceb> /4 the price
[15:41] <mattbrejza> or that way round
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[15:57] <Laurenceb> if you can make the I2C work...
[15:57] <Laurenceb> I hate I2C
[15:58] <mattbrejza> i have i2c working on the f0
[15:59] <Matt_PrjHet> Good. Well that's one Pi bricked for the afternoon. Why didn't I but the Pi with the ethernet port?? (I just killed it trying to mount a USB drive so I could custom build a PiTS image.)
[16:01] <infaddict> i dont mind i2c, got it working ok now.
[16:01] <daveake> I normally develop on a B+ then transfer to an A+ for flight, however a USB LAN adapter works with the A+
[16:01] <daveake> Anyhoo you bricked a Pi or just the SD card?
[16:02] <Matt_PrjHet> Just the card. I was being dramatic in my Homer-like frustration.
[16:03] <Matt_PrjHet> D'oh!
[16:04] <Ian_> dd is your friend, zero the data on the card and then repartition it and make a filesystem
[16:05] <Ian_> It took me a little while not to copy groups of Linux Rieser3 directories to a FATx thumb drive.
[16:05] <Matt_PrjHet> I tried a USB wifi dongle but all the guides said you need the network connection to begin with. I toyed with seeing if I could find a Pi emulator to run it in windows and use that web connection but I guess it wasn't to be.
[16:06] <daveake> No, you can set up the USB wifi without an existing connection
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[16:08] <daveake> Just edit /etc/wpa_supplicant/wpa_supplicant.conf and append this to it : http://pastebin.com/g01isLLT
[16:11] <Matt_PrjHet> I'll give it a try!
[16:12] <daveake> Much easier than what you were trying
[16:14] <Matt_PrjHet> Is there a decent built in text editor? Leafpad wouldn't open and Vi is really clunky...
[16:14] <Matt_PrjHet> Unless I have to enable leafpad somewhere...
[16:19] <Ian_> is nano available?
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[16:23] <Matt_PrjHet> Just in it now... I forgot to go in as SUDO and now I can't escape!! I take it ^ doesn't mean ^ in nano!!
[16:24] <Ian_> ctl x it's a wordstar like user interface
[16:25] <daveake> vi is easy (though not obvious). G to goto end of file, A to append, paste in your text, ESC the ":wq" to save and exit
[16:26] <Ian_> Vi of course.
[16:26] <Ian_> I was thinking that Matt was referring to nano. Vi does take a little gettin used to - best not to panic
[16:27] <Matt_PrjHet> I can't paste it sadly as I'm on on the Pi/HDMI out now. I take it I can't paste it directly into the SD card somewhere?
[16:28] <daveake> into /boot
[16:28] <daveake> but it'd be quicker to just type it
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[16:28] <Matt_PrjHet> Yeah, I'm in Nano now.
[16:29] <Ian_> training wheels :)
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[16:31] <Ian_> If you find yourself editing a file that you don't have the privilege to write to then save it as something else temporarily. chmod is your friend best used with numbers rather than attributes unless you happen to remember that syntax better
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[16:47] <Matt_PrjHet> Nuts. No connection. Its a really old D-Link wifi dongle. Plugged via a hub (or I ouldn;
[16:47] <Matt_PrjHet> *wouldn't be able to use the keyboard.
[16:50] <Matt_PrjHet> Thanks again for the help by the way gents :)
[16:51] <daveake> Get yourself a B+
[16:51] <daveake> You at the Pi party thing this weekend?
[16:51] <Matt_PrjHet> Yeah. Makes sense. No? Where is it?
[16:51] <daveake> Cambridge
[16:51] <daveake> Sold out but perhaps there are cancellations
[16:56] <Matt_PrjHet> Ah cool, I wonder if I could blag my way in if I just turned up...!
[16:57] <Matt_PrjHet> I've been meaning to take a drive up there anyway to scope it out before launch... assuming they let me launch from there.
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[17:46] <SpacenearUS> New position from 03VEGA-I after 03a day silence - 12http://tracker.habhub.org/#!qm=All&q=VEGA-I
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[18:23] <Vaizki> RIP Leonardo Nimoy...
[18:24] <SA6BSS> yes, just read that, to bad :(
[18:24] <fsphil> \/
[18:26] <Vaizki> well we all die but he gave more than he took
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[18:49] <alxwntr> Anyone know where I can find some documentation on SdFat.h?
[18:49] <alxwntr> a guide, etc
[18:50] <alxwntr> apparently it's better than the std SD lib
[18:50] <alxwntr> but the synax appears a bit different
[18:50] <alxwntr> can't find anything simple of google
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[19:10] <fxmulder> I thought vulcans had lifespans of like 200 years
[19:18] <Vaizki> I guess it wasn't easy being Spock in 1897
[19:22] <alxwntr> what happens to vulcans when they die?
[19:23] <alxwntr> do they go to a Valhalla?
[19:26] <alxwntr> At least no-one cries at their funerals...
[19:27] <Vaizki> it's only logical to die
[19:28] <pc1pcl> Vaguely remember somethinh about uploading their mind to somene/thing else before death..
[19:29] <pc1pcl> ah. http://en.wikipedia.org/wiki/Vulcan_%28Star_Trek%29#Katra
[19:30] <alxwntr> cunning
[19:30] <Vaizki> if slightly obvious
[19:30] <alxwntr> it's not far off here, I'm sure
[19:30] <alxwntr> did you see the article about the Dr saying full-body transplants are only 2 years off
[19:31] <alxwntr> clearly hopelessly optimistic
[19:31] <alxwntr> but nonetheless
[19:31] <alxwntr> ...
[19:32] <daveake> I've save the contents of my brain electronically. Only problem is I no longer have a diskette drive for it.
[19:32] <daveake> saved
[19:33] <Vaizki> how would you ever know you got restored from a broken backup
[19:33] <Vaizki> so.. does it really matter?
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[19:36] <alxwntr> hah
[19:36] <alxwntr> there's a standard question:
[19:36] <alxwntr> if you walked through a door and an exact copy of you was created
[19:36] <alxwntr> (same memories and everything)
[19:36] <alxwntr> and you were then killed
[19:37] <alxwntr> would it matter?
[19:40] <SA6BSS> just like the movie The Prestige http://www.imdb.com/title/tt0482571/?ref_=nm_flmg_act_29
[19:40] <SA6BSS> makes ju think
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[19:42] <Lunar_Lander> evening
[19:42] <alxwntr> hello Lunar_Lander
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[20:01] <Vaizki> to me Nimoy will always be the 80s Spock, on the bridge of Enterprise, in his white/gold starfleet uniform
[20:01] Action: Vaizki hides under a vulcan rock.
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[21:05] <cambazz> hello, previously I had found there was a lib for rmf69hwz
[21:05] <cambazz> now i can not find it.
[21:05] <cambazz> there are all sorts of drivers for this thing, but i dont know how to do RTTY
[21:11] <cambazz> is it this: https://github.com/UKHASnet/RFM69_Synchronous
[21:14] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12http://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
[21:14] <daveake> That doesn't do rtty; you need to read the manual and bash the registers yourself
[21:15] <cambazz> ok i am looking at the datasheet but in what mode do we have to use it
[21:16] <daveake> Dunno I've not done it
[21:16] <daveake> Why do you want to?
[21:18] <Vaizki> I don't think it goes below 1200bps FSK anyway
[21:18] <Geoff-G8DHE-m> How is looking for the flight tomorrow? daveake
[21:18] <daveake> No chance
[21:18] <Geoff-G8DHE-m> Wondered!
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[21:50] <cambazz> daveake: I have a moteino, so I want to send it to sky with a baloon.
[21:50] <cambazz> so is not FSK 1200bps a little low range for this?
[21:53] <daveake> yes RTTY would be much better
[21:54] <daveake> I don't know if anyone has done RTTY on that device or even if it's possible. You'd have to read through the manual and try to figure out a technique. I suspect you'll be the first.
[21:54] <cambazz> well i see it is already being used for HAB
[21:55] <cambazz> so either they are not using it RTTY or there is a way
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[22:02] <daveake> I've not seen it used for HAB except for some not very successful UKHASNET flights
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[22:26] <Ian_> The RFM69 is being used for a UHKASnet sensor network, but it uses the internal packet protocol and the buffer is limited to 64 bytes. Horses for courses.
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[22:40] <SpacenearUS> New vehicle on the map: 03Gabro01 - 12http://tracker.habhub.org/#!qm=All&q=Gabro01
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[23:05] <cambazz> Ian_ : I have been reading the UKHASnet sensor network, its source code on github specifically, (https://github.com/UKHASnet/UKHASnet_Firmware) but have not completely understood what it is. for example is a sensor node same as a baloon payload?
[23:10] <daveake> https://www.ukhas.net/
[23:11] <cambazz> so this is a groundborne network?
[23:12] <daveake> There's nothing in the protocol to support or preclude use as a tracker
[23:13] <daveake> More importantly, the range using FSK appears to not be good enough for HAB
[23:13] <cambazz> daveake: yes i got that. there is also driver for rfm69 in that. all i wanna do is use the moteino as a tracker.
[23:13] <daveake> Yes well you'll need to write the RTTY code yourself
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[23:13] <cambazz> rfm22 could be tricked to rtty
[23:14] <daveake> Yes, and you need to see if you can trick the 69 to do it
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[23:17] <cambazz> daveake: i think it has been done before
[23:17] <daveake> ok
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[23:30] <Ian_> Yes cambazz, it is essentially a ground based network that predominantly reports and relays temperature, humidity and voltage measurements, but with room for expansion
[23:30] <cambazz> daveake: http://www.up-in-the-air.com/ <- i think this guy has done it although there is no code and http://www.daveakerman.com/ describes something called lora packets
[23:30] <daveake> I should read that thing on lora packets :/
[23:31] <cambazz> Ian_ : I have a bunch of rfm69s and i want to send them with a baloon. i understand these things fsk and fsk is not good enough and there is this lora packets which i am reading now
[23:31] <daveake> '69 doesn't do lora
[23:33] <Ian_> if you regularly monitor #ukhasnet then you can talk with the movers and shakers there, most of whom also frequent this channel. The configurations are sensor, repeater and gateway nodes. It's use on HAB is somewhat limited although optimistically an airborne repeater might extend the reach of nodes.
[23:33] <cambazz> Ian_ : I wonder if those things can do 2 way communication
[23:34] <daveake> yes
[23:34] <cambazz> and for range, the only way is to test i believe. i wonder if we can use a test setup for range without launching the thing
[23:34] <daveake> they are transceivers
[23:34] <daveake> We have launched them
[23:35] <daveake> And so far, the result for HAB is "not good enough"
[23:36] <Ian_> daveake will put you right. As he says, not HAB ready.
[23:36] <cambazz> daveake: ok thanks. what was the range you got?
[23:36] <Laurenceb_> anyone know somewhere to buy carbon fibre nomex honeycomb sheet?
[23:37] <Laurenceb_> all the prices i can find are horrific
[23:37] <Laurenceb_> is there anywhere that has small quantities for sane prices?
[23:37] <Ian_> Bees make their own for just that reason . . . ;-)
[23:38] <daveake> cambazz A few miles
[23:40] Action: Ian_ must get some nomex bees working for me
[23:41] <Laurenceb_> cambazz: I'm working on a si446x based link
[23:41] <Laurenceb_> but its not ready yet :P
[23:41] <Laurenceb_> fighting bugs
[23:42] <Laurenceb_> have been for months :-/
[23:42] <Ian_> Dead bugs don't make money, honey!
[23:42] <cambazz> yes i am looking at cubex1 which used SI4464
[23:43] <cambazz> i guess the best way is to get a ntx2b
[23:43] <cambazz> what is the bandwidth on that?
[23:45] <daveake> 5kHz
[23:45] <cambazz> in bauds? is that 1200
[23:46] <daveake> Yes, I suspected you asked the wrong question
[23:46] <daveake> In practice, 600baud works fairly well but 300 baud is reliable
[23:46] <cambazz> ok thanks. bandwidth is wrong term.
[23:47] <daveake> Mostly people use 50 baud, for the best range
[23:48] <daveake> and for normal position data that's plenty fast enough
[23:49] <cambazz> ok. i am reading the specs for ntx2b and now i understand, this is pretty failsafe and problem free
[23:52] <cambazz> daveake: with the rfm69, you had few kilometers range and that was fsk?
[23:53] <daveake> yes
[23:53] <cambazz> why did not you try to fool it in to RTTY? were you bored from the project?
[23:54] <daveake> I idea was to fly a ukhasnet node and see how well it does
[23:54] <daveake> For a balloon tracker I have much better radios
[23:54] <daveake> i.e. NTX2B and LoRa
[23:55] <cambazz> ok. what is this LoRa?
[23:55] <daveake> Long Range radio
[23:55] <daveake> Similar to the '69 but much, much better
[23:56] <cambazz> yes, but I googled for it as long range radio and came up with garbage
[23:58] <cambazz> i still have not found a module or something like that. is that something we have to build on our own?
[23:59] <cambazz> and what is the range with that?
[00:00] --- Sat Feb 28 2015