highaltitude.log.20150721

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[01:02] <russss> spacex statement: http://www.spacex.com/news/2015/07/20/crs-7-investigation-update
[01:04] <russss> "we expect to return to flight this fall and fly all the customers we intended to fly in 2015 by end of year"
[01:07] <adamgreig> "Critically, the vehicle will be even safer as we begin to carry U.S. astronauts to the International Space Station in 2017."
[01:07] <adamgreig> almost sounds like putting people onboard makes it safer..
[01:11] <russss> heh
[01:11] <russss> also this sounds like even more of a disaster than it did before: http://www.planetary.org/blogs/jason-davis/2015/20150715-lightsail-workshop-recap.html
[01:11] <adamgreig> there was a much less satisfying postmortem from the lightsail people recently
[01:11] <adamgreig> lol
[01:11] <adamgreig> yea, that
[01:11] <russss> hah
[01:12] <russss> although frankly the original software issue takes the cake I think
[01:12] <adamgreig> that was ridiculous and all
[01:12] <adamgreig> but the rest of it's like
[01:12] <adamgreig> "we've never seen this before and neither has the company we bought the thing off"
[01:12] <adamgreig> repeat for cameras, radio
[01:13] <russss> yeah sounds like a complete set of cowboy subcontractors
[01:13] <adamgreig> you feel like less effort was expended finding the root cause than the spacex one
[01:13] <adamgreig> "shrug, camera firmware issue, maybe we'll try a firmware upgrade"
[01:13] <adamgreig> "yes, we were able to acoustically triangulate the strut that failed with the 890ms of telemetry data we got, then tested thousands of them to discover a rare material defect"
[01:14] <adamgreig> I mean, fair enough, they are quite different things and all
[01:14] <adamgreig> "Prior to this incident, LightSails fault modes were not well-characterized."
[01:14] <adamgreig> uh huh
[01:14] <russss> "unfortunately the contractor who supplied the computer didn't think to leave it switched on for more than 2 days"
[01:14] <adamgreig> I'm still amazed that the solution was to hope it'd randomly reboot, too
[01:15] <russss> well, they expected it would, and it did!
[01:15] <russss> but...watchdogs?
[01:15] <adamgreig> there is that
[01:15] <adamgreig> yea...
[01:15] <adamgreig> they plan on doing them now at least
[01:16] <adamgreig> the reboots seem more troublesome given they also clear all their data apparently
[01:17] <adamgreig> "Ecliptic is looking into switches with longer throw distances, or the possibility of adding small extensions to the existing switches."
[01:17] <russss> rocket. science.
[01:18] <russss> you'd have thought they'd at least have stuck a minimal backup computer on there.
[01:18] <adamgreig> it's everywhere though
[01:18] <adamgreig> I was in a meeting with some unnamed satellite company a year or two about about some cubesat that was to carry some smartphone
[01:18] <russss> ...especially given their computer was clearly not radiation hardened in the least
[01:18] <adamgreig> and some really ingenious solutions were being proposed
[01:18] <adamgreig> like, how do you get data off the smartphone and to the downlink radio?
[01:19] <adamgreig> implemented: camera on the avionics photos the smartphone screen
[01:19] <adamgreig> OCRs the text
[01:19] <adamgreig> downlinks it
[01:19] <adamgreig> how do you protect against errors in phone RAM, which is not space hardened? maybe some error correction coding? how about just writing everything your app needs 3 times over and voting on each byte?
[01:20] <adamgreig> networking between avionics modules? UDP over I²C sounds sensible
[01:20] <russss> I believe I know of this satellite
[01:20] <adamgreig> but someone raised a concern - what if a packet goes missing? falls off the i2c bus?
[01:20] <adamgreig> solution - just send ack packets back for each udp packet
[01:21] <adamgreig> it was a long meeting
[01:22] <adamgreig> someone (not an employee) mentioned you can actually just plug android phones into usb and communicate over that
[01:23] <adamgreig> this was a bit of a gamechanger
[01:23] <russss> haha
[01:23] <adamgreig> https://agg.io/u/phonecam.png
[01:24] <adamgreig> rocket science.
[01:24] <russss> at least they didn't use the phone as the main computer
[01:25] <adamgreig> christ, don't joke
[01:25] <adamgreig> if someone sold a COTS piece of hardware that let the phone run the radio I'm sure they would
[01:25] <dsockwell> is that bad?
[01:25] <dsockwell> i mean if you have the phone already
[01:25] <dsockwell> why not send it up on a balloon?
[01:25] <adamgreig> still it's easy to shit all over these projects, but like, they did build the thing and get it into space
[01:25] <adamgreig> dsockwell: this is for a low earth orbit satellite
[01:26] <dsockwell> hahahahaha
[01:26] <adamgreig> for a high altitude balloon, sure, people have done it, it works quite well
[01:26] <dsockwell> idk
[01:26] <adamgreig> I mean same considerations apply
[01:26] <dsockwell> if i got a sponsorship from like huawei to send a crappy phone to space
[01:26] <dsockwell> i'd really consider it
[01:26] <adamgreig> same, sure, totally
[01:26] <adamgreig> I'd probably stick a real tracker on it anyway
[01:26] <russss> if the phone had a decent watchdog timer (I don't know if any phones do), then you're probably going to do better than lightsail-1
[01:27] <adamgreig> https://www.flickr.com/photos/cuspaceflight/sets/72157624303173456
[01:27] <adamgreig> vintage android
[01:27] <russss> at least you'd have better persistent storage and you probably wouldn't run out of space for logging.
[01:28] <dsockwell> CU isn't University of Colorado, is it
[01:28] <adamgreig> nope
[01:28] <adamgreig> cambridge university in this case
[01:28] <dsockwell> i was real hopeful that it was the home team
[01:28] <dsockwell> but then 'hey wait thats England'
[01:29] <dsockwell> did the G1 get a little roughed up, or is that frost or foam or what?
[01:29] <adamgreig> it's just some foam that broke off
[01:30] <adamgreig> hmm
[01:30] <dsockwell> looks like someone used it for a while
[01:30] <adamgreig> the description does say "one very cold phone" but I don't remember it getting icy
[01:30] <dsockwell> before the flight
[01:30] <adamgreig> oh yea it was whatever was lying around I guess
[01:30] <dsockwell> ah
[01:31] <adamgreig> though the person whose phone it was would go on to work at google two years later, so go figure
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[09:29] <SpacenearUS> New vehicle on the map: 03BLUESKYE - 12http://tracker.habhub.org/#!qm=All&q=BLUESKYE
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[09:39] <Darkside> LOUD NOISES
[09:40] <craag> medium altitude aeroplane receiver: http://imgur.com/a/raC0D
[09:40] <edmoore> all wood
[09:40] <edmoore> nice
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[09:41] <craag> tis very, wanna stick up an antenna? just take some wood screws: https://twitter.com/philcrump2/status/622766983369629697
[09:42] <russss> was going to say, that looks like the SUWS WebSDR mast :P
[09:42] <craag> ;)
[09:42] <mattbrejza> and then hang over as far as you dare to screw it on
[09:43] <Darkside> i need to try building one of those helical dipoles at som epoint
[09:43] <craag> note that LF antenna isn't online yet - problem with the receiver - back onsite on Friday to fix
[09:43] <Darkside> so what are the antennas on the cross-arms up top?
[09:44] <craag> Darkside: Old MOD Air -> Ground
[09:44] <Darkside> ahhh
[09:44] <Darkside> i knew i'd seen that style of antenna before
[09:44] <craag> Some are ~170MHz, other ~470 iirc
[09:44] <fsphil> wish we had mains power at my mountain site. could add loads of receivers
[09:45] <russss> solar and some batteries?
[09:45] <fsphil> that's what it is. but it struggles with just the wifi + one webcam over winter
[09:45] <russss> ah right
[09:45] <russss> wind turbine, backup generator
[09:45] <russss> :P
[09:45] <fsphil> I think we're getting a wind turbine
[09:46] <fsphil> not sure yet
[09:46] <russss> couple-kilowatt ones are pretty cheap
[09:46] <fsphil> are they not also huge?
[09:46] <craag> mattbrejza: Also if one person is moving around too 'suddenly', the other person should hold on!
[09:46] <mattbrejza> sounds like fun
[09:47] <Laurenceb> edmoore: I got my UKF/FEA frankenfilter to run
[09:47] <Laurenceb> its mad, works really well
[09:47] <russss> fsphil: you can get small low-voltage ones for charging batteries on boats
[09:49] <fsphil> finding a good one is tricky. lots don't produce any output unless it's quite gusty
[09:49] <russss> the vertical-axis ones are pretty low-profile, although not as high power
[09:49] <fsphil> they survive high winds better, which is useful
[09:50] <russss> http://www.orionairsales.co.uk/pramac-noiseless-twin-blade-wt400w-vertical-axis-turbine-darrieus-h-shape-type-2180-p.asp
[09:50] <russss> not particularly cheap either
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[09:54] <edmoore> Laurenceb: awesome sauce
[09:54] <Laurenceb> ill post pic in sec
[09:54] <edmoore> cool
[09:54] <edmoore> i'm here for 3 more minutes
[09:54] <edmoore> then i must bbq some ribeyes
[09:55] <fsphil> we'll all be around later
[09:55] <edmoore> holiday > work
[09:55] <Laurenceb> http://i.imgur.com/KSbS0ZL.png
[09:55] <Laurenceb> time ~24hours along bottom axis
[09:55] <edmoore> so it converges just about :)
[09:56] <Laurenceb> theres a simulated concrete beam with some small ~+-2C temperature fluctuations over the day
[09:56] <Laurenceb> then filter is trying to find the heat capacity (in weird units)
[09:56] <Laurenceb> i ramped the heat capacity up/down over the day
[09:56] <Laurenceb> and it matches exactly, with small delay and smoothing
[09:57] <edmoore> good stuff
[09:57] <Laurenceb> theres probably some coefficients i need to tweak to fix the convergence
[09:58] <Laurenceb> atm its a bit of a pita to tune, as it only runs at ~10x real time
[09:58] <edmoore> yeah
[09:58] <Laurenceb> as matlab sucks
[09:58] <edmoore> just how you initialise P probs
[09:58] <Laurenceb> i ended up writing the FEA in matlab
[09:58] <edmoore> why are you analysing concrete beams in matlab?
[09:58] <Laurenceb> but Elmer should work... if i can work out how to do mesh generation properly
[09:58] <edmoore> this doesn't sound like a hobby project
[09:58] <Laurenceb> no, work project
[09:58] <edmoore> the combination or two unpleasant things implies Work
[09:59] <Laurenceb> I should shut up, this is probably very patentable :D
[09:59] <edmoore> :)
[09:59] <Laurenceb> heh
[09:59] <edmoore> right gtg
[09:59] <Laurenceb> "non-destructive analysis using signals of opportunity"
[09:59] <Laurenceb> cya
[10:01] <Darkside> http://www.spacex.com/news/2015/07/20/crs-7-investigation-update
[10:02] <SpeedEvil> Rocket fuel can't melt steel beams.
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[11:21] <SpacenearUS> New position from 03K6RPT-12 after 0311 hours silence - 12http://tracker.habhub.org/#!qm=All&q=K6RPT-12
[11:23] <Ian_> SpeedRvil, can LOX embrittle steel struts? I ask because I don't have a clue, of course.
[11:29] <Ian_> craag, you wouldn't get me even thinking of climbing around that tower - too much imagination! I hate to think when it was built. All examples that I can think of were pulled down after their climbing certs didn't get renewed yonks ago.
[11:30] <Ian_> I bet it was flogged by the MoD as potential kindling, without thinking that antenna monkeys might actually want to climb it any more.
[11:30] <Ian_> Other than that - sheer envy!
[11:31] <craag> We only spend a few minutes up it at a time - fantastic views across central london from up there on sunday though!
[11:32] <craag> Current tenant used the site for nearly 6 years without touching the mast
[11:32] <SpeedEvil> Ian_: 'yes' - but in principle, the grade should have been picked appropruately
[11:32] <craag> Only when Noel asked if we could put stuff on it did he realise it's use..
[11:33] <craag> now a couple of commercial companies have kit on there too, but our enablement of this extra income keeps us a free spot.
[11:34] <mattbrejza> what do they do? provide wifi to farmers?
[11:35] <craag> one provides a wireless ISP to a nearby village, the other is a repeater for a business radio rental firm.
[11:35] <dsockwell> weather control beams from planet X
[11:35] <mattbrejza> ah
[11:36] <mattbrejza> (so i was half right)
[11:37] <craag> yep ;)
[11:37] <mattbrejza> what do they use for wireless isp? wimax?
[11:37] <craag> 5ghz ubiquiti wifi titanium + sector antenna for the isp
[11:38] <mattbrejza> so waht internet connection does the tower have to handle that?
[11:38] <Kalchar> hi guys
[11:38] <craag> That connection is about 70mbps down, 30mbps up iirc.
[11:39] <craag> But we currnetly have 4 internet connections terminating in the shed
[11:39] <Kalchar> UpuWork: you here?
[11:39] <mattbrejza> nothing special for that isp?
[11:39] <craag> The 70/30 is a leased line for them, goes back to their basingstoke dc I think.
[11:41] <craag> Might not sound like much, but at my office here we have 4 down, 0.5 up. Would be v happy with double that on a wireless isp :P
[11:41] <mattbrejza> its shared though
[11:41] <mattbrejza> i would assume
[11:42] <craag> yep, same as adsl contention
[11:42] <fl_0> daveake: u here?
[11:42] <craag> leased line is dedicated I believe, so the only contention is on the wireless side.
[11:44] <edmoore> Kalchar / fl_0: you may both legitimately need just those two, but if it's a general hab question (about gps units or paylaod docs or whatever) then feel free to ask the question to the channel. someone might know the answer and be able to dive in
[11:44] <fl_0> I just wanted to know when about Pi in The Sky Shileds will be in stock again
[11:45] <fl_0> We thin about launching a HAB with that hardware ;)
[11:46] <chimpusmaximus> Last i saw was they had received the latest boards and started testing with an eye to release 24th July.
[11:47] <chimpusmaximus> from twitter @pitsproject Boards received and undergoing testing. We aim to ship them on the 24th if you've ordered.
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[11:49] <edmoore> fl_0: ah, that is a question for them then :)
[11:49] <edmoore> but do note that *many* people here have built their own arduino or pi shields with a radio and gps with great success
[11:49] <edmoore> just learning the pcb-design program
[11:50] <edmoore> sounds intimidating but this must be one of the best places on the net to get support for going from scratch to a working flight pcb
[11:50] <edmoore> as so many people on here have gone through the same process and are very generous with their time to help out
[11:50] <edmoore> eagle tips, desing reviews and so on
[11:50] <edmoore> design*
[11:51] <mattbrejza> stripboard words fine too
[11:52] <edmoore> for the pi yes
[11:52] <edmoore> for the arduino, that retched 0.05" spacing mistake that got baked in ruins it for everyone
[11:52] <fl_0> edmoore: thank you
[11:52] <fl_0> that would be the alternative :)
[11:53] <mattbrejza> eg: https://drive.google.com/file/d/1KQ8be7QlxaPjxQI32aW0ND5WL0EWZTbTfw/view?usp=sharing
[11:53] <mattbrejza> i cant appear to find the pictures of before its swim though
[11:53] <edmoore> fl_0: definitely more work than just buying a known-good thing off the shelf but if you're willing to dive in then you'll get a lot of help here, and it's jolly satisfying to DIY
[11:54] <edmoore> also i believe Upu is giving a talk/workshop at this year's UKHAS conference about doing your own PCB design
[11:54] <edmoore> and i would heartily recommend attending if possible as the conf is good fun, but failing that it might hopefully be recorded
[11:57] <fl_0> I will think about that :)
[11:57] <edmoore> still tickets available i believe
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[11:58] <mattbrejza> danielsaul: has teh schedule been published yet?
[12:06] Nick change: Wiktor_ -> Wiktor
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[13:43] <JR_> Hi All
[13:45] <JR_> Can someone recommend an inexpensive SMA antenna for receiving LORA transmissions, from fixed location not chase car.
[13:50] <UpuWork> hey JR_
[13:50] <UpuWork> Did I just mail you ?
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[13:51] <fsphil> if it's 434mhz I'd normally suggest http://cpc.farnell.com/1/1/21033-watson-wsm-270-mini-mag-antenna.html
[13:53] <edmoore> it's 868 in europe i thought
[13:53] <JR_> UpuWork, you did
[13:53] <UpuWork> suspected as much
[13:53] <UpuWork> just mailed you my number
[13:53] <edmoore> (but i don't know much about it, it being proprietary)
[13:53] <JR_> magic
[13:54] <craag> Lora is a modulation, semtech modules are around for most bands in ~130 <-> ~950
[13:56] <fsphil> there are modules for 434 and 869
[13:57] <edmoore> i defer to all the above
[13:57] <fsphil> but yea, proprietary
[13:57] <edmoore> if 434 then i second the watson recommendation
[13:57] <fsphil> every time someone uses it, a kitten crys
[13:57] <edmoore> i have a watson w-50 for more permentant house-mounting duty
[13:57] <edmoore> it's good
[13:58] <Laurenceb> i wonder how well the new spirit1 modules would work
[13:58] <Laurenceb> if anyone can find any...
[13:59] <Laurenceb> ooh
[13:59] <Laurenceb> http://www.st.com/web/en/catalog/tools/PF258319
[13:59] <Laurenceb> naughty
[14:00] <fsphil> "up to -123 dBm"
[14:00] <fsphil> down to?
[14:00] <Laurenceb> http://www.digikey.co.uk/product-detail/en/STEVAL-SP1ML868/497-15212-ND/5131473
[14:00] <Laurenceb> heh
[14:00] <Laurenceb> yeah its a bit lame - im getting >10dB better than that with silabs, but its nice and easy to use
[14:00] <Laurenceb> with the modules you can pair them and jobs done
[14:01] <Laurenceb> its a bluetooth style AT command modem
[14:02] <craag> That tuning you've done on the silabs Laurenceb, is that per-physical-ic, or can you now use those settings on any of that model IC and get that performance?
[14:02] <Laurenceb> any of the recent silabs ics
[14:03] <craag> nice
[14:05] Nick change: fl_0 -> fl_0|afk
[14:05] <Laurenceb> aha found it at last
[14:05] <Laurenceb> http://www.digikey.com/product-search/en?WT.z_cid=sp_497_0928_buynow&Enterprise=44&lang=en&Vendor=497&mpart=SP1ML-868
[14:05] <Laurenceb> time to work out link budget with that nasty 500mW tx
[14:07] <adamgreig> what tuning's that Laurenceb?
[14:07] <Laurenceb> AFC for silabs
[14:08] <adamgreig> nice
[14:08] <Laurenceb> the "stock" AFC is very busted
[14:08] <Laurenceb> so after a lot of reverse engineering i got a semi µC controlled AFC scheme working
[14:09] <Laurenceb> with +-1ppm pull in
[14:09] <SpacenearUS> New vehicle on the map: 03KE0EWJ-11 - 12http://tracker.habhub.org/#!qm=All&q=KE0EWJ-11
[14:13] <Laurenceb> hmm it should manage ~2.4kbps at 350km
[14:13] <Laurenceb> without any external antenna
[14:13] <Laurenceb> lulz
[14:13] <Laurenceb> but... ~400mA on the balloon
[14:15] <Laurenceb> with a very big 868mhz yagi on the ground spirit1 might manage 250kbps
[14:16] <Laurenceb> add a Rpi for live video?
[14:16] <mattbrejza> 500mW is 10% DC max btw
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[14:16] <Laurenceb> yeah i know
[14:16] <Laurenceb> thats why i said "naughty"
[14:16] <mattbrejza> oh right
[14:17] <Laurenceb> heh :P
[14:17] <mattbrejza> 10%DC over the period of a day...
[14:17] <Laurenceb> over a hubble period
[14:18] <Laurenceb> http://www.rfsolutions.co.uk/acatalog/ANT-MFYAG23-1.pdf
[14:19] <Laurenceb> lol "23dBm"
[14:19] <mattbrejza> ha
[14:19] <Laurenceb> http://www.rfsolutions.co.uk/acatalog/info_CA860Y_____TNC.html
[14:19] <Laurenceb> whyyyyyyyyyyyy
[14:20] <Laurenceb> well farnell stock it with sane spec http://uk.farnell.com/rf-solutions/ant-yag23/ant-gsm-yagi-23db-868mhz/dp/2133452
[14:20] <Laurenceb> just need to shoehorn it into a spirit1 module
[14:20] <Laurenceb> in place of the ceramic ant
[14:20] <mattbrejza> whats special about the spirit modules?
[14:23] <Laurenceb> it has packet and FEC/resend
[14:23] <Laurenceb> so drop in serial link
[14:23] <mattbrejza> oh right
[14:24] <Laurenceb> its an AT command based modem thingy
[14:24] <adamgreig> so like xbee?
[14:24] <Laurenceb> in fact... you could probably using Rpi with xmodem or whatever its called
[14:24] <Laurenceb> yeah
[14:25] <mattbrejza> not convinced about AT commands tbh (been using them with the esp8266)
[14:25] <Laurenceb> of course.. this would be relativly trivial to impliment with silabs as well
[14:25] <Laurenceb> hehe
[14:25] <Laurenceb> yeah i was just thinking as a supr n00b friendly system with high throughput
[14:25] <mattbrejza> theyre easier to use if youre a human typing on a terminal, but not if you want to try to interface a micro to one
[14:25] <Laurenceb> indeed
[14:25] <fsphil> mattbrejza: ofcom thought about the period sadly, it's 10% in an hour
[14:26] <Laurenceb> especially as many implementations are only tested with humans at the terminal
[14:26] <mattbrejza> fsphil: i thought it was even less than that :/ (cba to look it up though)
[14:26] <gonzo_fc> do a 6min tx, then change chan
[14:26] <fsphil> hah
[14:26] <Laurenceb> e.g. microchip bluetooth modules can dump charactrs if they arrive too fast
[14:26] <fsphil> that might work actually
[14:26] <Laurenceb> spirit1 can change channels easily
[14:27] <mattbrejza> and instead of just polling a bit in a register you have to parse ascii...
[14:27] <fsphil> or use spread spectrum. use all teh channels
[14:27] <mattbrejza> well i thinkto get 250kbit/s youd have to use the entire 500mW allocation in the first place
[14:27] <Laurenceb> indeed
[14:28] <Laurenceb> hmm thats almost fast enough for airborne "broadband"
[14:28] <Laurenceb> pity theres no source of 500mW on a picoballoon
[14:29] <fsphil> picoloon
[14:29] <Laurenceb> the loon patents do seem pretty loon
[14:29] <Laurenceb> they are obsessed with all optical networking
[14:29] <Laurenceb> i just dont see the point
[14:30] <Laurenceb> using 5.4Ghz or 24GHz ism band with standard microwave kit
[14:30] <Laurenceb> thats how base station backhaul often works
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[16:21] <Lunar_Lander> hello
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[16:44] <Lunar_Lander> I am contemplating if it was a bad idea to buy the gopro hero camera as I now see that it is in a plastic enclosure that cannot be removed
[16:45] <Lunar_Lander> given that there have been problems of the gopro HD hero enclosures fogging up
[16:46] <mattbrejza> test it
[16:46] <Lunar_Lander> ok
[16:50] <RealBorg> Lunar_Lander, there are cheap (<10$) cams on ebay
[16:51] <RealBorg> how much did your gopro cost?
[16:51] Nick change: fl_0|afk -> fl_0
[16:51] <mattbrejza> >$10
[16:51] <RealBorg> you'll probably get 4-redundancy for the weight and 8-redundancy for the money
[16:52] <Lunar_Lander> the gopro was 130¬
[16:52] <mattbrejza> generally if it comes in a case that case wont fog if its sealed
[16:52] <mattbrejza> (i didnt think any did though)
[16:53] <Lunar_Lander> do you mean these keyfob 808 cameras RealBorg?
[16:53] <Lunar_Lander> thanks for the opinions so far
[16:54] <RealBorg> http://www.ebay.com/itm/221498960287?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
[16:54] <mattbrejza> lol 'HD'
[16:54] <mattbrejza> 'Video resolution: 720 x 480'
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[17:01] <daveake> Yeah, whilst I'm not a big fan of GoPros, if you're going to put a camera in a HAB you might as well use a good one and not a Chinese ebay crappocam
[17:01] <Lunar_Lander> yea
[17:01] <mattbrejza> although the 808 #16 are alright, but at £30 theyre a grade above crappocap
[17:01] <mattbrejza> m
[17:02] <daveake> 808s get reworked quicker than I can keep up with them
[17:02] <RealBorg> daveake, I'd rather put 4 cheap ones
[17:02] <daveake> up to you, but a flight is £200 anyway and if the aim of the flight is good pictures you need a good camera
[17:13] <Lunar_Lander> yea
[17:13] <Lunar_Lander> and with 808 people said they can jam GPS
[17:13] <RealBorg> surround pictures ;)
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[17:36] <Geoff-G8DHE-M> Your not going to get sphericalpanorams from 4 cheap lens!
[17:39] <SpacenearUS> New vehicle on the map: 03DC2EH-14 - 12http://tracker.habhub.org/#!qm=All&q=DC2EH-14
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[18:45] <SpacenearUS> New vehicle on the map: 03JFS3 - 12http://tracker.habhub.org/#!qm=All&q=JFS3
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[19:01] <SP3OSJ> # habhub
[19:02] <SP3OSJ> #habhub
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[19:26] <SpacenearUS> New vehicle on the map: 03KD0VYQ-1 - 12http://tracker.habhub.org/#!qm=All&q=KD0VYQ-1
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[19:55] Nick change: Upui -> Upu
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[20:28] <SpacenearUS> New position from 03SP3OSJ after 0310 days silence - 12http://tracker.habhub.org/#!qm=All&q=SP3OSJ
[20:38] <amell> Lunar_Lander: mobius camera is the dogs gonads
[20:38] <Lunar_Lander> yea I read about that one
[20:38] <amell> Upu: The shipment of hab goodness arrived safely ta.
[20:38] <Upu> cool amell cheers for the order
[20:42] <dsockwell> what did i just read
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[20:56] <SpacenearUS> New position from 03SP3OSJ-12 after 0310 days silence - 12http://tracker.habhub.org/#!qm=All&q=SP3OSJ-12
[20:59] <SpacenearUS> New vehicle on the map: 03DK3SB-8 - 12http://tracker.habhub.org/#!qm=All&q=DK3SB-8
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[21:01] <SpacenearUS> New vehicle on the map: 030x08 - 12http://tracker.habhub.org/#!qm=All&q=0x08
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[21:27] <NormanOK> hello everyone, I am having some problems with RTTY, any help is appreciated. I think my arduino code to transmit RTTY works fine but I am having difficulty decoding it with fldigi. It is very unstable, and works occasionally. Isn't RTTY a very easy to decode mode?
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[21:39] <Laurenceb__> http://www.reddit.com/r/uwotm8
[21:41] <craag> NormanOK: Can you post up a screenshot of dlfldigi decoding?
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[21:50] <NormanOK> I'm at work, I can't right now. But the there is also some drift in the frequency. I don't know if the problem is caused by that.
[21:50] <NormanOK> When I try to transmit CW, the frequency seems to be stable but it is not in the RTTY mode.
[21:51] <craag> Ok, some screenshots of dlfldigi + waterfall will help a lot
[21:52] <craag> What transmitter are you using?
[21:52] <NormanOK> I am heading home soon. if you are going to be online I can send it in an hour.
[21:53] <NormanOK> it's a cheap module I got from ebay, it has an si4432.
[21:53] <craag> I'll be asleep unfortunately, there may be others around though :)
[21:54] <NormanOK> it also doesn't want to work at powers 14, 17, 20 dbm. I was thinking it wasn't getting enough current but it didn't really make a difference with a different source either.
[21:55] <craag> what voltage are you using?
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[21:55] <NormanOK> 3.3V
[21:56] <craag> Hmm should be ok
[21:56] <craag> Post up some pics of the setup + screenshots and that should be enough for someone to give you some pointers
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[21:58] <NormanOK> ok great, thanks. I'll do it when I get home. If nobody's around, I'll try again tomorrow.
[21:59] <craag> :) good night!
[21:59] <NormanOK> good night!
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[22:01] <Lunar_Lander> good night :)
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[23:37] <fxmulder> anyone else had problems reading spi from these si40xx chips?
[23:59] <dl3yc> fxmulder: what's your problem?
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[00:00] --- Wed Jul 22 2015