highaltitude.log.20150908

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[06:05] <SpacenearUS> New position from 03HB9FDK-12 after 0312 hours silence - 12http://tracker.habhub.org/#!qm=All&q=HB9FDK-12
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[08:16] <SpacenearUS> New vehicle on the map: 03MTG004 - 12http://tracker.habhub.org/#!qm=All&q=MTG004
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[08:41] <depcep> Hello ! Question; will the "Raspberry Pi+ GPS Expansion Board" work with the raspberry pi2?
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[08:46] <RealBorg> it works
[08:46] <depcep> the description says "both the version 1 and version 2 Raspberry Pi+ Models" so i was a bit confused by that
[08:48] <daveake> Well that description does answer your question
[08:48] <depcep> how? does "version 2" mean pi2 ? and how about Pi+ ?
[08:48] <daveake> The "2" means "2"
[08:49] <depcep> well i suppose i havent seen any model b+ descriptions, but yeah - hope it will work
[08:57] <daveake> The B+ *is* a V1 Pi+ model, so yes it will work
[09:12] <RealBorg> any experience with mt3608?
[09:15] <SpacenearUS> New vehicle on the map: 03BALYOLO - 12http://tracker.habhub.org/#!qm=All&q=BALYOLO
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[09:27] <tweetBot> @G7IGB: National balloon foxhunt in The Netherlands: The annual balloon foxhunt in The Netherlands... http://t.co/tAtKz4xA35 #hamradio #ukhas
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[09:38] <RealBorg> connected vin to single cell lipo, vout is exactly the same as input
[09:39] <Maxell> And Vraw?
[09:40] <RealBorg> you mean vref? wait, I look
[09:42] <RealBorg> 1.5
[09:43] <RealBorg> 2v now
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[09:57] <Herman-PB0AHX> !flights
[09:57] <SpacenearUS> 03Herman-PB0AHX: There are no flights currently :(
[10:00] <RealBorg> if I only had a mt3608 when my car battery was empty :)
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[10:29] <SA6BSS> RealBorg: and you have some load over the V out
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[10:34] <RealBorg> SA6BSS, it's working now
[10:35] <RealBorg> i just didn't know which direction to turn the vref and was afraid of turning to far
[10:37] <RealBorg> I want to build a plane to fly as slow and with as little thrust as possible
[10:37] <fsphil> blimp?
[10:37] <RealBorg> they key should be wing loading
[10:37] <eroomde> yeah i was thinking that, though they're quite draggy
[10:38] <RealBorg> so I thought I use caron fiber to create a wing of some plastic foil
[10:38] <eroomde> yep so if wings then you probably realise that you want extremely thin sections for flights in very low reynolds numbers
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[10:39] <RealBorg> I thought about something like a hang glider
[10:39] <RealBorg> only one sheet of foil held by carbon fiber
[10:39] <eroomde> laurenceb used to play with rogallos
[10:39] <eroomde> in the context of ballooning
[10:40] <RealBorg> got some ideas from walkalong liders
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[10:41] <RealBorg> I am currently thinking of high altitude uav
[10:42] <RealBorg> solar power, return to home
[10:43] <RealBorg> could such a wing go to 50k+ feet?
[10:43] <eroomde> yes
[10:43] <Laurenceb> yeah I had some fun with rogallos
[10:43] <Laurenceb> nice if you can live with <4:1 lift to drag
[10:43] <RealBorg> eroomde, thx :)
[10:43] <eroomde> i mean in theory there's no particular limit to what altitude you can fly at, provided the density isn't pathologically low
[10:43] <eroomde> it's just a question of designing a foil for the reynold regeime you're in
[10:44] <RealBorg> eroomde, I was thinking about the infamous coffin corner
[10:44] <eroomde> if you just want to get back to a launch site then i'd probably design to do more of the flying at lower altitudes and just keep it stable at high altitudes with a useful, if not stellar, glide ratio
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[10:45] <RealBorg> I guess that plane will probably hit an altitude where it would need to break the speed of sound to generate more lift
[10:45] <Laurenceb> yes that was my thinking when I went for rogallo
[10:45] <eroomde> i don't think you'll be flirty with critical mach numbers at 50kft tho RealBorg
[10:46] <RealBorg> I want to climb as high as possible
[10:46] <eroomde> flirting
[10:46] <RealBorg> in my opinion the u2 dragon lady was the most advanced plane ever built
[10:47] <RealBorg> and she's still in service
[10:48] <eroomde> i don't know about that, much as i admire it
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[10:49] <eroomde> but yes i think your intuition to go very low speed, very low wing loading for high alt flight is correct
[10:49] <Laurenceb> http://i.imgur.com/AlI3IpH.jpg
[10:49] <eroomde> have a look at the zephyr and other similar drones
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[10:54] <Laurenceb> eroomde: any idea how to light an Estes motor properly?
[10:55] <RealBorg> https://www.youtube.com/watch?v=jIJRoj2qwsc 3:40
[10:55] <Vostok> Laurenceb: with high voltage
[10:56] <Laurenceb> I was thinking of these http://www.quickburst.net/jtec_info.pdf but they are too big to fit
[10:56] <RealBorg> i recently got some 4V -> 400kV cockroft-waltons from ebay :)
[10:57] <Vostok> RealBorg: flutter might also be a problem
[10:57] <Vostok> since you need a very high true airspeed at high altitudes
[10:57] <Vostok> that'll probably be more of a problem than mach1
[10:57] <eroomde> Laurenceb: i feel like we go round in circles here
[10:57] <Laurenceb> heh
[10:57] <eroomde> i'm sure i've brought up daveyfires every time you've brought up estes
[10:58] <Laurenceb> but they are no longer made
[10:58] <eroomde> and told ou that the estes igniters are garbage
[10:58] <eroomde> then a week later you come and tell me that the estes igniters are garbage and do i know something better
[10:58] <eroomde> daveyfires are no longer made!?!?!
[10:58] <eroomde> that kind of thing should precipitate the collapse of society
[10:58] <eroomde> and yet we're still here
[10:58] <eroomde> so something is up
[10:58] <eroomde> give malcolm jennings a call
[10:58] <eroomde> the chap who runs rockets and things
[10:59] <Laurenceb> oko
[11:00] <eroomde> explain the problem
[11:00] <Laurenceb> hmm I'll try
[11:01] <Laurenceb> are these the same things? http://www.monetti.net/pdf/en/PRODUCTS_PYROTECHNIC_ACCESSORIES/2004%20A00%20N28%20EN.pdf
[11:01] <eroomde> that sort of thing
[11:01] <eroomde> make sure they're the fizzy ones rather than the poppy ones
[11:01] <Laurenceb> ok
[11:02] <Laurenceb> those have the same part numbers
[11:02] <eroomde> for high alt launches it's that sort of thing that then gets treated with igniter bbq sauce
[11:02] <eroomde> like initiator + thermite
[11:02] <Laurenceb> it doesnt looks like Estes ignition at altitude is a big issue
[11:02] <Laurenceb> aerotech APCP on the other hand...
[11:03] <Laurenceb> I think thats a "non starter"
[11:05] <eroomde> ha
[11:06] <Laurenceb> aerotech appear to be "cheating" by using atmospheric back pressure to ignite with a thermite coated igniter
[11:06] <Laurenceb> at <0.4atm you cant ignite APCP that way
[11:06] <fsphil> https://www.raspberrypi.org/blog/the-eagerly-awaited-raspberry-pi-display/
[11:06] <Laurenceb> finally...
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[11:11] <Laurenceb> OH
[11:12] <Laurenceb> energetix is daveyfire
[11:12] <Laurenceb> its been rebranded
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[13:05] <Laurenceb> heh https://imgur.com/a/tZShU
[13:30] <mfa298> fsphil: I'm guessing the display is big news, rpi site is being slow now.
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[13:32] <fsphil> yeah it took a while to load
[13:33] <fsphil> neat but not sure I'll get one
[13:33] <fsphil> could be interesting for a tracking computer
[13:33] <ntx2> hi there - a question on ssdv. I read somewhere that we should send 4 packets of ssdv for one packet of telemetry. Whats the packet size to use for the transmission?
[13:33] <fsphil> ssdv packets are always 256 bytes
[13:34] <fsphil> you can put whatever you want in between them
[13:34] <ntx2> I am using the code linked from the ukhas wiki
[13:34] <ntx2> to create the ssdv file but
[13:35] <ntx2> I am sending the file using python code that I have written
[13:35] <fsphil> the file produced by the encoder is just a series of 256 byte packets
[13:36] <ntx2> in python sending the file is as easy as rtty(write)
[13:36] <ntx2> and I am worried that I might push a large file down this pipe and clog up telemetry
[13:36] <mfa298> could be fun addition my ukhasnet Pi code (and maybe also for hab tracking purposes)
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[13:39] <ntx2> mfa298 - your code is already doing some ssdv?
[13:40] <mfa298> ntx2: sorry talking about something else from just before you joined
[13:40] <ntx2> sorry....
[13:40] <fsphil> split up the file into its 256 byte packets, send them individually
[13:40] <mfa298> however if you've got a file with the ssdv data in it then sending ssdv should be really easy
[13:41] <fsphil> loading the file into an array of 256 byte packets can be done in python on one line iirc
[13:41] <ntx2> ok...
[13:41] <ntx2> that makes sense
[13:48] <fsphil> ok two lines
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[14:26] <SpacenearUS> New vehicle on the map: 03HB9FDK-13 - 12http://tracker.habhub.org/#!qm=All&q=HB9FDK-13
[14:28] <M0XIN> Yay, Beta reflow Controller has arrived
[14:29] <M0XIN> Now I can make the perfect toast
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[14:30] <M0XIN> Interesting little project: https://www.youtube.com/watch?v=4SNkzoOvoD8
[14:36] <HB9RSU> also mechanically well done
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[14:46] <fsphil> neat
[14:46] <fsphil> a mill might be quicker though, means it could skip the etching process
[14:49] <M0XIN> But with lower resolution?
[14:50] <fsphil> yeah thinking that when seeing the shakey video of the small text
[14:50] <fsphil> that's really fine detail
[14:51] <M0XIN> Indeed
[14:54] <M0XIN> I wonder if a 3d printer could be retrofitted to do this
[14:54] <chimpusmaximus> I would think so
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[14:59] <fsphil> deposit copper onto a bare board
[14:59] <eroomde> lordy that could get old
[15:00] <eroomde> but yes mechanically nice
[15:00] <eroomde> he's gone serious on that x axis linear slide
[15:01] <eroomde> he could hang a laser weighing several tonnes off that thing
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[15:08] <M0XIN> Heh
[15:09] <M0XIN> I have an A frame 3D printer (MendelMax) with a spare mount for mounting an additional head. Could definitely do this.
[15:10] <M0XIN> Would want to use the X-aixs for horizontal lines though, as the moving bed on the Y axis is prone to backlash
[15:11] <chimpusmaximus> Sadly i went closed source for my current one so would need a fair bit to get it working... :-(
[15:12] <M0XIN> I guess an inkjet printer depositing etch resist could do the same job
[15:13] <chimpusmaximus> have seen some people use old cd players to make laser etcher that might do the job
[15:13] <SpeedEvil> There are readily available 6W laser diodes
[15:13] <M0XIN> This guy use 60 to 100mW
[15:14] <SpeedEvil> http://www.ebay.co.uk/itm/6W-NUBM44-450nm-Laser-Diode-In-Copper-Module-W-Leads-Glass-Lens-/171841778046?pt=LH_DefaultDomain_0&hash=item280291717e
[15:14] <M0XIN> But a blue photodiode
[15:14] <SpeedEvil> USE A HEATSINK OR IT WILL DIE
[15:14] <M0XIN> There are lots of little repurposed DVD drive mechnism printers on eBay
[15:15] <M0XIN> http://www.ebay.co.uk/itm/NEJE-300mW-USB-Laser-Engraver-Cutter-Engraving-Cutting-Machine-Laser-Printer-UK-/291556338941?hash=item43e21cacfd
[15:15] <M0XIN> 38mmx38mm area
[15:15] <Laurenceb> interesting device
[15:15] <M0XIN> Then you have this as a step up: http://www.ebay.co.uk/itm/1500mW-Desktop-Laser-Cutting-Engraving-Machine-DIY-Logo-Picture-Marking-Printer-/261810459840?var=&hash=item3cf51e94c0
[15:16] <chris_99> heh cool M0XIN, you could use it for teeny tiny pcb stencils
[15:16] <M0XIN> chris_99: Yeay, possibly just enough for a tiny pico tracker :)
[15:18] <M0XIN> Important note: The machine cant be kept working constantly more than 30minutes, the longer it works, the shorter its laser heads life would be
[15:18] <M0XIN> Heh
[15:18] <chris_99> lol
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[15:23] <Guest48790> Hi, I'm making a streamer for my payload. Is it just as simple as a strip of ripstop nylon? Is it worth reinforcing the edges with gaffa tape to make it slightly more rigid or is it better being all floppy?
[15:23] <eroomde> floppy is better
[15:24] <eroomde> parachute would be better still :p
[15:24] <eroomde> you'll want to do *something* with the edge of the ripstop though because despite the name, it will fray to buggery
[15:24] <Geoff-G8DHE-M> Won't be able to glide however ;-)
[15:25] <daveake> Won't be able to tick the box on the CAA application that says "Parachute?" :p
[15:25] <Guest48790> ok thats fine, I'll just melt the edges slightly to prevent fraying
[15:27] <eroomde> this sounds horrible
[15:27] <eroomde> believe it or not streams can glide
[15:28] <Guest48790> Par-a-chute: Any of various similar unpowered devices that are used for retarding free-speeding or free-falling motion
[15:28] <Guest48790> I think a streamer falls under that definition :P
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[15:32] <eroomde> yeah it'll work just about - how are you calculating the dimensions Guest48790?
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[15:35] <Maxmed> from here: https://ukhas.org.uk/guides:parachute_sizing_chart
[15:35] <Maxmed> payload weight 275g so I'm going for 1.5m long, 0.2m wide
[15:37] <eroomde> ok, go with that
[15:37] <fsphil> 2001. sheesh
[15:37] <eroomde> asside: i do not like that wiki page
[15:37] <eroomde> or that graph
[15:38] <eroomde> is it cheeky to embed my youtube talk at the top and say 'WATCH THIS FIRST'
[15:38] <eroomde> probably.
[15:38] <fsphil> not a bad idea
[15:38] <fsphil> certainly do no harm
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[15:44] <Maxmed_> Out of interest what kind of decent rate do you think I'll get with that setup?
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[15:44] <Maxmed_> (this is a test to see if I've been logged out again)
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[15:51] <fsphil> dodgey internet?
[15:52] <eroomde> looks like it
[15:52] <eroomde> well, edited that page
[15:52] <Geoff-G8DHE> eroomde, Its not obvious how it could glide I must admit!
[15:52] <eroomde> don't know if you can embed youtube into dokuwiki directly
[15:52] <eroomde> it's actually quite hard to make it do that :)
[15:52] <eroomde> but they are unstable as buggery
[15:53] <Geoff-G8DHE> hat I can believe
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[16:04] <arjunnaha> On the CAA application form, it says 'Maximum dimension of balloon', does this include the balloon when it about to burst (really big) or on the ground inflated(normal size)?
[16:05] <daveake> dunno, so I put down "1.5m diameter at launch"
[16:07] Action: arjunnaha 'copies and pastes
[16:13] <arjunnaha> Does the CAA accept emails, or is it snail mail?
[16:13] <daveake> emails are fine
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[16:42] <arjunnaha> davake: bought a pits board, which radio aerial do you recommend i use?
[16:43] <arjunnaha> *daveake
[16:43] <eroomde> ta daveake
[16:44] <daveake> np eroomde meant to do that after the conf but got busy
[16:44] <daveake> arjunnaha At the payload? The one that comes with it :-)
[16:45] <daveake> It includes a pigtail; you just cut that to length and make a ground plane. Instructions on the site
[16:45] <arjunnaha> Is that the long one or the short one ? ;-)
[16:46] <daveake> ?
[16:46] <arjunnaha> I think there is two in the box, using any of them is fine?
[16:46] <daveake> No there's one in the box
[16:47] <daveake> You may be thinking of the GPS antenna; you don't want to do anything with that one!
[16:47] <daveake> s/with/to/
[16:47] <arjunnaha> ok, thanks
[16:48] <daveake> https://ukhas.org.uk/guides:payload_antenna
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[17:20] <arjunnaha> Sorry, but where can I get a payload box big enough for: 1x pi and pits, 2 gopros, 1 canon and an external battery?
[17:21] <eroomde> anywhere where you can find a box that contains them
[17:21] <eroomde> that might sound flippant but i mean it
[17:21] <eroomde> there doesn't not exist hab-payload-boxes-r-us
[17:21] <eroomde> however, to be more helpful, a popular choice for payloads are polystyrene (styrofoam to americans) packaging boxes used to send frozen goods
[17:22] <eroomde> like fish or dry ice or whatever
[17:22] <eroomde> those are available in a very large range of sizes, and i've got them from ebay before
[17:22] <arjunnaha> ebay you say...
[17:22] <arjunnaha> where else would I be able to find such items?
[17:22] <eroomde> however, it's quite easy just to make your own box from scratch using polystyrene sheets (sold for insulation) from a hardware or home-improvement store
[17:23] <arjunnaha> cheers, thank you
[17:23] <eroomde> well you could directly try food-packaging shops or something, but really your guess is as good as mine
[17:23] <eroomde> if i faced this problem i'd just google around
[17:23] <eroomde> are you in the UK?
[17:23] <arjunnaha> yes
[17:24] <arjunnaha> I'll try wickes
[17:24] <eroomde> so, this sort of thing http://www.ebay.co.uk/itm/THERMO-INSULATION-POLYSTYRENE-BOXES-FOOD-FISH-REPTILES-PERISHABLE-VARIOUS/231650067244?_trksid=p2045573.c100034.m2102&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D20140107092241%26meid%3Dc062d417e81f468e896161da17f5a724%26pid%3D100034%26rk%3D2%26rkt%3D4%26sd%3D121485982072
[17:24] <eroomde> yeah try wickes too
[17:24] <eroomde> incidently you can do A Nice Job around some of these boxes
[17:25] <ibanezmatt13> I usually use these: http://www.hindleys.com/ and make cutouts for the different components
[17:25] <eroomde> e.g. paint it a very high-vis colour or as i once did make a sort of suit out of bright orange ripstop nylon
[17:25] <eroomde> i also integrated strapping at the top and bottom to integrate it into a train of payloads
[17:25] <eroomde> and did a nice job of installing an anetnna
[17:25] <eroomde> hold one will find a pic
[17:26] <eroomde> infact steve posed with my payload once as he thought it was pretty, which was flattering
[17:26] <eroomde> so i'll check his flickr
[17:26] <arjunnaha> and do I need specialist string to attach the payload together
[17:27] <arjunnaha> Nice idea, like you can add extra payload with a 'click'!
[17:27] <eroomde> https://www.flickr.com/photos/16828840@N07/17603602058/in/album-72157652588841849/lightbox/
[17:27] <eroomde> so i made a little jacket out of that foil-covered radiation insulator you can get from homebase
[17:27] <eroomde> the harness has a caribina at top and bottom as you can see
[17:28] <eroomde> the antenna is held in some pipe insulation - you can just see at the bottom
[17:28] <eroomde> and you can see the radial elements too
[17:28] <eroomde> and there's a harmless scientific experiment sign just to not scre framers or whatever
[17:28] <arjunnaha> very cool, what about gps signal?
[17:29] <eroomde> it just penetrates the top of the box happily
[17:29] <eroomde> obviously don't line that bit with foil!
[17:29] <eroomde> i used that stick-backed velcro throughout to hold the insulation-wrap together
[17:29] <arjunnaha> that would be a bit disastrous
[17:29] <eroomde> :)
[17:31] <arjunnaha> where about in the UK are you located?
[17:31] <eroomde> oxford currently
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[17:31] <eroomde> here's another shot of that payload https://www.flickr.com/photos/cuspaceflight/4721971075/in/album-72157624203062811/
[17:31] <eroomde> ... and that is still my mobile phone number on the side
[17:31] <eroomde> should probably blur that
[17:32] <arjunnaha> as he receives a PPI call...
[17:32] <arjunnaha> whats the vice box doing there?!
[17:33] <eroomde> it had something in it that i needed - it's not part of the payload
[17:34] <arjunnaha> ah okay ;-)
[17:35] <daveake> arjunna You can also buy boxes from Hobbycraft or randomsolutions.co.uk
[17:35] <daveake> The Hobbycraft ones are large enough for Pi/PITS/battery but not a Canon too.
[17:35] <eroomde> heh i didn't know randomsolutions did them
[17:35] <eroomde> that's the place arjunnaha ^
[17:35] <daveake> Yeah, has done for about a year at a guess
[17:35] <eroomde> that shop is run by rocketboy on this channel who is the guy posing with my payload in the first pic
[17:35] <eroomde> he's the grandfather of all this and very good
[17:36] <eroomde> i'd just get it from there
[17:36] <daveake> He (very generously) gave some away, together with some balloons, for the Pi skycademy thing
[17:36] <eroomde> he's a good egg
[17:36] <daveake> Hobbycraft sell eggs too
[17:36] <daveake> but not as good as Steve :p
[17:37] <eroomde> do you have any early hints as to when the first skycademy grads/alums might be doing launches with schoolkids daveake?
[17:37] <daveake> Octobver/November for the first ones iirc
[17:37] <eroomde> oh awesome
[17:37] <eroomde> so, soon
[17:37] <eroomde> that's really good
[17:37] <eroomde> also
[17:37] <eroomde> https://www.flickr.com/photos/cuspaceflight/4721966581/in/album-72157624203062811/
[17:38] <eroomde> i'm sure this must be oliver de p
[17:38] <eroomde> but before he came onto the scene officially at the ukhas conf a year later
[17:38] <eroomde> i just can't remember who else it might be
[17:38] <eroomde> i didn't talk to him at that launch as far as i recall, i assumed he was a friend of one of the groups whose payload we were taking on our payload train
[17:39] <eroomde> hmm actually maybe not
[17:40] <eroomde> the person responsible for this rigging is a keen sailor - https://www.flickr.com/photos/cuspaceflight/4721984367/in/album-72157624203062811/
[17:41] <daveake> ha
[17:41] <eroomde> arjunnaha: where are you based?
[17:41] <arjunnaha> Reading
[17:41] <eroomde> oh not far then
[17:41] <arjunnaha> Well...I'm not a skycademy grad but I'm a 'schoolkid'; who's managing a pits board flight with my class
[17:42] <eroomde> you're in good comapny
[17:43] <arjunnaha> ;-)
[17:43] <eroomde> you're using a parachute right?
[17:45] <arjunnaha> yes, don't worry ;)
[17:45] <eroomde> coolio
[17:45] <eroomde> we've had people not wanting to use them today
[17:45] <eroomde> which is a bit alarming
[17:45] <daveake> It is when they then ask "how fast will it land?"
[17:46] <arjunnaha> enough to knock someone out!
[17:46] <daveake> I've no idea
[17:46] <daveake> But then he didn't seem to either
[17:47] <eroomde> streamers work, for some value of work, but for heavens sake just use a chute
[17:47] <chris_99> why would you not use a parachute heh
[17:48] <arjunnaha> What brand of balloon should I get, I have bought all the electronics and stuff. I need a reliable brand, otherwise I indirectly lost all of you money (school money and grant money)
[17:48] <eroomde> howyee
[17:48] <eroomde> from random solutions
[17:49] <eroomde> the balloons are usually reliable, the risk usually comes from underfilling them
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[18:04] <Lunar_Lander> hello
[18:05] <mclane_> Hi LunarLander
[18:06] <Lunar_Lander> how's life?
[18:06] <mclane_> ok and you?
[18:06] <Lunar_Lander> me too
[18:07] <mclane_> waiting for some nicer weather
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[18:07] <mclane_> so that we can let escape another 100g Pawan
[18:08] <Lunar_Lander> yea
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[18:32] <SpacenearUS> New vehicle on the map: 03PINKY - 12http://tracker.habhub.org/#!qm=All&q=PINKY
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[18:47] <SpacenearUS> New vehicle on the map: 03HB9FDK-14 - 12http://tracker.habhub.org/#!qm=All&q=HB9FDK-14
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[18:49] Nick change: fl_0|afk -> fl_0
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[19:19] <SpacenearUS> New vehicle on the map: 03HB9FDK-15 - 12http://tracker.habhub.org/#!qm=All&q=HB9FDK-15
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[19:21] <SpacenearUS> New vehicle on the map: 03SMI_PITS - 12http://tracker.habhub.org/#!qm=All&q=SMI_PITS
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[19:42] <pa3efr> Does anyone know what frequency HAB nr NLDPH01 is using? I should be able to hear it, but I do not know waht the frequency would be. Thanks for replies.
[19:44] <PE0SAT> !dial NLDPH01
[19:44] <SpacenearUS> 03PE0SAT: Can't find a flight doc matching your query
[19:48] <Geoff-G8DHE> Last telemetry was 21Hours or more ago
[19:48] <PE0SAT> Thanks Geoff-G8DHE
[19:50] <pa3efr> Thank you. I am a newbee to this topic. Will now go into read mode, ;-)
[19:50] <pa3efr> !
[19:51] <Geoff-G8DHE> Open the panel for the flight up and you can see when the last was heard, done it myself more times than I care to remember ;-)
[19:52] <pa3efr> Ok Geoff, I just wondered whether I could hear a HAB or not. Does it send in 70cm band?
[19:52] <Geoff-G8DHE> Varies but yes 70cms is very common, UK one's in the ISM section as we aren't allowed Aeronautical at all, rest of Eyurope varies
[19:53] <Geoff-G8DHE> It might also say VIA APRS in which case its being imported from aprs.fi so will be on the relevant band for the country its over
[19:54] Nick change: fl_0 -> fl_0|afk
[19:55] Nick change: fl_0|afk -> fl_0
[19:57] <pa3efr> Thanks Geoff. Will go QRT now but for sure I will be back. Good night for now. 73 de Erwin
[19:57] <Geoff-G8DHE> 73
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[20:30] <SpacenearUS> New position from 03AIRCOR-51 after 032 days silence - 12http://tracker.habhub.org/#!qm=All&q=AIRCOR-51
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[20:43] <tweetBot> @daveake: "Naked Scientists" podcast about the recent #skycademy HAB course and flights #UKHAS http://t.co/rN3Zi3E1mW
[20:43] <SpacenearUS> New position from 03AIRCOR-61 after 032 days silence - 12http://tracker.habhub.org/#!qm=All&q=AIRCOR-61
[20:47] <Lunar_Lander> nice dave
[20:47] <Lunar_Lander> thanks for sharing
[20:47] <daveake> The "3 2 1" was me :)
[20:47] <daveake> and the excitement just after was when the 2 balloons, launched 100m apart, nearly hit each other
[20:48] <daveake> The 2 payloads did manage to photograph each other
[20:48] <Lunar_Lander> ohhh!
[20:48] <Lunar_Lander> that was a close call
[20:49] <daveake> All added to the fun
[20:52] <SpacenearUS> New vehicle on the map: 03PERKY - 12http://tracker.habhub.org/#!qm=All&q=PERKY
[20:53] <Lunar_Lander> :)
[20:53] <Lunar_Lander> and all went nice with T&R?
[20:53] <Lunar_Lander> (tracking&recovery)
[20:54] <daveake> Yes, 1 flight was underfilled and hit the sea, buit all the others were recovered
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[21:02] <Lunar_Lander> nice :)
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[21:09] <xanadu> Hey all. SoMakeIt Southampton here.
[21:09] <xanadu> We're planning our first balloon launch!
[21:10] <xanadu> Can anyone give advice on what kind of string to use? Kite string perhaps?
[21:11] <Lunar_Lander> nylon like the one you can see at the top http://randomsolutions.co.uk/Random_Aerospace/Stuff.html
[21:11] <Lunar_Lander> that works OK
[21:11] <Lunar_Lander> *braided nylon
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[21:14] <xanadu> Great, thanks.
[21:16] <amell> spot the problem. http://imgur.com/h8t0kjs
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[21:21] <amell> https://www.flickr.com/photos/16828840@N07/19289807540/in/photostream/ - youre kidding me. it came down like that???
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[21:23] <daveake> Well it's going to come down if it has a hole like that
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[21:25] <daveake> One of Upu's flights came down with a huge sheet of latex attached - http://i.imgur.com/8ZnO7wA.jpg
[21:26] <amell> ouch
[21:26] <Upu> one ?
[21:26] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12http://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
[21:26] <mfa298> xanadu: you're in good company here, there's a few Southampton people here. Hopefully you may have already made contact with some of the Uni team
[21:26] <amell> you might suffocate small mammals with that
[21:26] <daveake> That one apparently formed its own parachute, judging by the relaxed descent rate at altitude
[21:28] <amell> putting my second tracker together atm. forgot what connects where&
[21:28] <amell> i need to get some better glasses
[21:29] <Lunar_Lander> yea that is huge
[21:29] <Lunar_Lander> that is why I insisted on cutdowns
[21:29] <Lunar_Lander> in my project
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[21:34] <amell> http://i.imgur.com/58xmuBj.png - any idea what this is? it claims to be a pro mini but looks completely different to the one i already have
[21:34] <Lunar_Lander> hm
[21:34] <Lunar_Lander> bought on ebay?
[21:34] <amell> seems to have a txco where the one i have doesnt
[21:34] <amell> yes
[21:34] <amell> im suspicious
[21:34] <Lunar_Lander> yea
[21:35] <amell> does a genuine one have a txco?
[21:35] <Lunar_Lander> normal quartz I think
[21:37] <amell> cant decide whether to trust it
[21:38] <Upu> thats not a tcxo
[21:38] <amell> no?
[21:39] <amell> despite the TXC on top?
[21:39] <Upu> http://www.txccrystal.com/
[21:40] <Upu> and probably a fake from ebay most are https://www.arduino.cc/en/Products/Counterfeit
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[21:40] <amell> im puzzled, why cant i see this on my other arduino pro mini?
[21:41] <daveake> most of them have resonators
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[21:41] <Upu> it will be a fake amell
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[21:41] <Upu> and they all use different components
[21:41] <Upu> whatever is cheapest in Shenzeng market that week
[21:42] <amell> bastards
[21:43] <Upu> probably quite hard to find a genuine on ebay :)
[21:43] <Upu> it will probably work exactly like an original
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[21:43] <Upu> right I'm off laters
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[21:44] <amell> this is definately fake. the right angle header pins have the plastic on the wrong side.
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[21:45] <amell> this is 8mhz. i ordered 16.
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[21:51] <amell> if you compare these boards to upu gps breakout ones, they are in a different class of quality...
[21:55] <amell> http://i.imgur.com/SSmXzI8.png - what does it mean when it says desolder jumper - i cant actually find anything to desolder.
[21:55] <mattbrejza> well providing its still a 328 what does it matter?
[21:55] <mattbrejza> perhaps not a legit 328 though
[21:55] <mattbrejza> if works -> shrug
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[21:59] <mfa298> and if you're not 100% convinced by it, use the cheap ones for dev work and buy a proper one for actual flights.
[22:00] <daveake> My only worry would be the resonator
[22:00] <daveake> and if yours has a xtal then np
[22:00] <amell> it appears to be an xtal
[22:01] <daveake> yeah you can always trust a label :/ http://www.discovercircuits.com/dc-mag/Issue_4/Photos/FakeCapacitor1.jpg
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[22:05] <amell> PayPal Postage is not available. We apologise for the inconvenience.
[22:05] <amell> FFS
[22:07] <Lunar_Lander> dave, classic :D
[22:07] <amell> thats crazy
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[00:00] --- Wed Sep 9 2015