highaltitude.log.20160527

[00:01] <ulfr> hey DL7AD
[00:01] <DL7AD> hi ulfr
[00:01] <ulfr> what's up?
[00:01] <DL7AD> work is over for this week :D
[00:01] <DL7AD> fortunately
[00:01] <ulfr> neat
[00:02] <ulfr> I only have one day left
[00:02] <DL7AD> Thursday is my last day in the week at university
[00:03] <DL7AD> i heared about the conference will take place in manchester this year
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[00:11] <Ian_> UKHAS Conference? Cambridge
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[00:29] <Ian_> DL7AD, UKHAS Conference? Cambridge. Steve RocketBoy is organising.
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[00:31] <DL7AD> Ian_: ah thanks. forgot that
[00:33] <DL7AD> Ian_: are there already information about when and where? because i dont want to book my flight and hotel too late.
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[00:35] <Ian_> It looks like 3 or 10 September, but not fixed yet. Best you email Steve. I keep looking for detail, but it's running late.
[00:36] <Ian_> The impression is that the cost will be considerably down on last year, but of course the travel will offset that.
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[00:41] <Ian_> I'm trying to get a fix on dates too as I will need to tailor a trip to Madrid to fit in.
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[00:43] <Ian_> Latest on the mailing list was 16 May
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[01:01] <DL7AD1> yeah
[01:01] Nick change: DL7AD1 -> DL7AD
[01:01] <DL7AD> Ian_: had a quick internet disconnection
[01:03] <ulfr> A very quick one.
[01:03] <ulfr> Some of my customers experienced the same today as I removed their fiber from my switch slot.
[01:03] <DL7AD> :D
[01:03] <ulfr> Maybe someone fiddling with fiber in your area DL7AD ?
[01:04] <DL7AD> no
[01:04] <ulfr> But then again, we were upgrading from 100Mbps to 1Gbps
[01:04] <ulfr> So they probably got slightly happier.
[01:04] <DL7AD> its the usual internet disconnection
[01:04] <ulfr> How annoying.
[01:04] <DL7AD> my provider disconnections me at night every 24h
[01:04] <DL7AD> in order to have to static ip address
[01:04] <ulfr> why?
[01:05] <DL7AD> *no
[01:05] <ulfr> oh
[01:05] <DL7AD> because they are selling static ip adresses
[01:05] <ulfr> silly
[01:05] <DL7AD> true
[01:05] <ulfr> We prefer to keep our customers at statics
[01:06] <DL7AD> okay. lets implement the ublox max6g now
[01:06] <DL7AD> found about 10 of the max6g in my shelf
[01:07] <DL7AD> :D
[01:07] <DL7AD> the only problem ist, that they're not completely software compatible to the max7
[01:29] <ulfr> How annyoing.
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[05:40] <SpacenearUS> New position from 03JULO-17 after 0311 hours silence - 12http://tracker.habhub.org/#!qm=All&q=JULO-17
[05:41] <SA6BSS-Mike> If I understand things right the VK9WI is in fact a VK3VY as in " This is related to the Wireless Institute of Australia annual conference weekend ... WIA"
[05:41] <SA6BSS-Mike> *VK3YT
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[06:04] <SpacenearUS> New vehicle on the map: 03car_chase - 12http://tracker.habhub.org/#!qm=All&q=car_chase
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[06:56] <SA6BSS-Mike> JULO-17 434.65 RTTY 300bd/600 8n2
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[07:38] <SpacenearUS> New vehicle on the map: 03OM6KA_chase - 12http://tracker.habhub.org/#!qm=All&q=OM6KA_chase
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[07:57] <JonnyAlpha> Just testing an IRC app on my Android phone. Seem to work.
[07:59] <daveake> irccloud ftw
[07:59] <fsphil> haven't seen JonnyAlpha in a while. strange
[08:02] <SpacenearUS> New vehicle on the map: 03OM4AOZ_chase - 12http://tracker.habhub.org/#!qm=All&q=OM4AOZ_chase
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[09:08] <SpacenearUS> New vehicle on the map: 03OM3KAA_chase - 12http://tracker.habhub.org/#!qm=All&q=OM3KAA_chase
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[09:22] <fsphil> http://ssdv.habhub.org/RXJMCO
[09:22] <fsphil> images seemed to stop
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[09:46] <JonnyAlpha_> Can someone put my mind at rest, is it legal to transmit from a Balloon on 434MHz? The wiki is confusing https://ukhas.org.uk/general:restrictions_legality
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[09:51] <Geoff-G8DHE-M> Yes in the ISM band using ISM rules. What you can't do is use Amateur radio regulations.
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[09:54] <JonnyAlpha_> Geoff - thanks, it was in response to a comment on UK Radio Scanning Forum - I have just read the ISM bit online.
[09:54] <adamgreig> In the UK. And technically above 434.04 or so.
[09:55] <Geoff-G8DHE-M> IR2030/1/10 2010/0168/UK Oct 2010 Non-specific short-range devices. Equipment may be used airborne 433.05-434.79 MHz 10 mW e.r.p
[09:55] <Geoff-G8DHE-M> See http://stakeholders.ofcom.org.uk/binaries/spectrum/spectrum-policy-area/spectrum-management/research-guidelines-tech-info/interface-requirements/IR_2030-june2014.pdf for the full detail
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[10:05] <JonnyAlpha> Geoff - Sorry got disconnected - thanks
[10:05] <Geoff-G8DHE-M> nps
[10:07] <SM0ULC-Reb> JonnyAlpha: get a real irc-client such as kvirc, mirc etc
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[10:16] <JonnyAlpha> SM0UL-Reb: I am using webchat.freennode.net on a Mac and just tried an Android freebie on my phone AndroIRC
[10:21] <JonnyAlpha> SM0ULC-Reb: KVIrc not updated since 2012?
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[10:23] <topshed> Hi there I'm planning a Skycademy launch for next tuesday and would like to get hourly predictions set up on HabHub - is the right place to ask?
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[10:36] <number10> topshed: go to #habhub
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[10:53] <SA6BSS-Mike|2> JonnyAlpha: its updated reguarly https://github.com/kvirc/KVIrc/wiki/Downloading-KVIrc's-nightly-source-or-binaries
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[11:12] <SpacenearUS> New position from 03YAM-1 after 03a day silence - 12http://tracker.habhub.org/#!qm=All&q=YAM-1
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[11:18] <SpacenearUS> New vehicle on the map: 03CALLSIGN123_chase - 12http://tracker.habhub.org/#!qm=All&q=CALLSIGN123_chase
[11:46] <JonnyAlpha> Is there any way of messaging someone who appears as a receiver on the HabHub map?
[11:47] <arjunnaha> They will most likely be in this channel
[11:47] <arjunnaha> What's the callsign?
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[11:55] <JonnyAlpha> arjunnaha: They appear as callsign 0x17 in North devon, about 5 miles from me, I would like to chat with them about helping track our balloon flight.
[11:56] <adamgreig> might be worth an email to the list
[11:57] <daveake> Pretty sure he's here as seventeen
[11:57] <adamgreig> or that :P
[11:57] <daveake> 'cos someone asked before :)
[11:57] <fsphil> surely twentythree
[11:58] <daveake> well yes I did wonder about that :)
[12:01] <SpeedEvil> JonnyAlpha: I assume going to the GPS position doesn't count?
[12:02] <JonnyAlpha> SpeedEvil: That would be stalking!!
[12:02] <JonnyAlpha> How do I mail the list?
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[12:05] <daveake> Er, you've been doing that quite a lot in recent weeks, just do it one more time :)
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[12:07] <JonnyAlpha> Sorry Dave - still learning, so Ill post a message on UKHAS Google Group.
[12:08] <JonnyAlpha> daveake: Your flight yeatsreday conicided with my afetr school club. I had the kids looking at your images and following the balloon flight, they loved it. Especially the view from your back garden :-)
[12:09] <daveake> oh!
[12:09] <adamgreig> JonnyAlpha: right, the google group is actually an email list, so every message is emailed to about 1000 people
[12:09] <daveake> yeah nice views here, but I'd have thought that the "spaaaace" (not really) images would impress them more
[12:09] <adamgreig> you can subscribe to it by email and then you just email it to post and you receive emails for messages
[12:10] <JonnyAlpha> daveake: Them also, there were several wows and well cools !!
[12:10] <daveake> good good
[12:11] <swaledale> have you called Guinness to get them to verify your highest ssdv record? :)
[12:12] <daveake> hah a) not worth doing b) they're a pita
[12:13] <daveake> Still, at least they "have words" with errant Italian claims :p
[12:13] <swaledale> haha useful for that at least then!
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[12:14] <JonnyAlpha> daveake: What did you reach 41K +
[12:15] <daveake> 41,880 iirc
[12:15] <daveake> somewhere around there
[12:16] <swaledale> i see the burst ripped the camera off!
[12:16] <daveake> number10 got quite a bit higher with a Canon camera - much woo with that one
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[12:16] <daveake> yeah, I guessed that had happened when the pix stopped after burst
[12:16] <daveake> A good reminder about making the thing more robust :/
[12:16] <swaledale> i decided against trying to track it from my flight home :)
[12:17] <daveake> ha
[12:18] <swaledale> ive noticed people tend to get edgy on flights when you bring up lines of code and satellite pics on your laptop
[12:18] <JonnyAlpha> I was doing some calculation with the club kids - re chutes and balloons. With a 750g payload we calculated Hywoee 800 and a Rocketman 4ft and just under 3cu m helium?
[12:18] <JonnyAlpha> Aiming for 30,000m
[12:19] <JonnyAlpha> Hwoyee DOH!
[12:26] <number10> lots of woo with that one as it was 750g
[12:37] <daveake> That is heavy
[12:38] <swaledale> daveake what's been the total weight using the pizero setup?
[12:38] <daveake> My first Pi flight was heavy - not just the Pi and a shedload of batteries, but Upu had a GoPro/AVR payload, and I think we had a backup tracker too. That one was under a 1200g balloon but still got to just under 40km
[12:38] <daveake> 120g
[12:39] <daveake> Could get that down by removing the SMA plugs/sockets and direct soldering coax
[12:39] <swaledale> 120g is pretty slim already, decent reduction in balloon size/gas use maybe
[12:39] <daveake> Still wasn't going to beat number10's record if I had
[12:39] <SpacenearUS> New position from 03SKIPI after 036 days silence - 12http://tracker.habhub.org/#!qm=All&q=SKIPI
[12:40] <daveake> Yeah at 120g you can get a decent altitude with a small balloon
[12:40] <swaledale> which did you use yesterday?
[12:41] <daveake> A 500g would get to about 30km
[12:41] <daveake> Yesterday was a Hwoyee 1600
[12:41] <fsphil> I've never gotten something above the magical 40km
[12:42] <swaledale> and a 1600 that didnt burst early :)
[12:42] <daveake> They usually don't
[12:42] <JonnyAlpha> fsphil: a bit like the sound barrier
[12:42] <daveake> I flew an old one
[12:42] <daveake> from when you got lucky or didn't
[12:42] <swaledale> yeah u said, old batch with pot luck issues
[12:42] <daveake> yup
[12:42] <fsphil> added woo
[12:42] <JonnyAlpha> I had a logitech C270 in the box that still needed to be dismantled
[12:43] <daveake> average woo for the batch, but concentrated locally
[12:44] <JonnyAlpha> I was going to have a Pi Camera pointing out of the side of the payload and the web cam doing selfies towards the ground?
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[12:45] <swaledale> it would be good to nail the recipe for super high, ultimate woo as it were
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[12:46] <daveake> Well the known recipe is H2 + 1600g Hwoyee + lightest payload you can make + luck
[12:46] <JonnyAlpha> daveake: The balloon calculator does seem to over egg it a bit, Sue Grey mentioned she used a 350 balloon? with quite a heavy payload and did quite well?
[12:47] <swaledale> yeah i guess 'nailing it' is reducing the luck needed (altho never removing of course)
[12:47] <daveake> The CUSF calculator uses the manufacturer's figures for burst diameter; reality and Hwoyee figures never seem to match
[12:47] <swaledale> it would be good to measure burst diameter
[12:47] <mfa298> for record breaking altitudes you might also need a time machine to get Hwoyee 1600 with special woo
[12:48] <daveake> Steve's balloon page has alternate burst diameters based on experience
[12:48] <JonnyAlpha> daveake: @ RandomEngineering?
[12:48] <daveake> yes
[12:49] <daveake> I use his when I'm flying Hwoyees
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[12:49] <daveake> Or just add 1-2km to the CUSF figure
[12:50] <JonnyAlpha> Thats the one we were using, just re-ran it, Hwoyee 500, 750g, ascent 5m/s (is that were I am going wrong), gets me to 28784m
[12:50] <swaledale> was doing some predictions earlier and one of them had me landing almost in your back garden daveake
[12:51] <daveake> I once aimed for my old house (from my current one). Missed by 2 miles.
[12:52] <swaledale> excellent! this had it heading heading west for a change
[12:53] <JonnyAlpha> Should I put in a lower ascent rate when calculating balloon sizes? For parachutes I read between 3.5 and 4.5m/s decent?
[12:54] <edmoore> 5m/s is fine on descent
[12:54] <edmoore> 5 is fine for ascent too
[12:55] <edmoore> if at the design stage, i would shoot for 5/5
[12:55] <edmoore> you can always tweak the fill for faster/slower as the launch date approaches and you can see what the winds are doing
[12:57] <adamgreig> you can put custom burst diameters into the cusf calculator, for what it's worth
[12:58] <JonnyAlpha> WIth 750g a 3ft chute gives me 4.81m/s descent.
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[13:06] <edmoore> fine and dandy
[13:06] <edmoore> how are you calculating that?
[13:06] <edmoore> JonnyAlpha ^
[13:07] <JonnyAlpha> http://randomaerospace.com/Random_Aerospace/Parachutes.html
[13:07] <JonnyAlpha> http://randomaerospace.com/Random_Aerospace/Balloons.html
[13:10] <edmoore> that doesn't say what drag coefficient it uses
[13:10] <edmoore> i shall work it out 1 sec
[13:10] <edmoore> right
[13:10] <edmoore> Cd = 1
[13:10] <edmoore> that's a bit high
[13:12] <JonnyAlpha> When I use the chute calculator you just select the chute and the Cd is entered automatically. 3ft Rocketman has a drag Cd = 0.526
[13:12] <edmoore> but that chute is still ok if you multiply the speed by sqrt(1/0.75)
[13:12] <edmoore> which is the correction factor to adjust Cd to e better value
[13:13] <fsphil> huh, sibot's MIA
[13:13] <edmoore> oh wait
[13:13] <edmoore> sorry
[13:13] <edmoore> i misread
[13:13] <JonnyAlpha> edmoore: never heard of sqrt but I understand ish
[13:13] <edmoore> square root
[13:13] <edmoore> but ignore me
[13:14] <edmoore> i misread steve's thing
[13:14] <JonnyAlpha> Say what?
[13:14] <JonnyAlpha> Do you mean you missread the Cd for the chute?
[13:15] <edmoore> yes
[13:15] <edmoore> i want to know what the assumed Cd value for the rocketman chute is, basically
[13:16] <JonnyAlpha> So in summary, if I do have a payload of 750g then a 3ft Rocketman with a descent rate of 4.81m/s is OK?
[13:16] <edmoore> yes
[13:17] <edmoore> probably
[13:17] <edmoore> go with it
[13:17] <edmoore> my concerns are academic atm
[13:17] <edmoore> keep forging ahead
[13:17] <JonnyAlpha> Also I put in a lower ascent rate e.g. 4m/s I achieved a higher altitude? So less gas?
[13:17] <edmoore> yes
[13:19] <edmoore> makes sense?
[13:20] <edmoore> if not grab a cuppa and we'll go over why it makes sense
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[13:21] <JonnyAlpha> A Hwoyee 350 with a payload of 750g, with 1.26cu m of helium will achieve a ascent rate of 3m/s and altitude of 27696m (not quite high enough but I see the logic, less gas more room to expand?)
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[13:21] <edmoore> yes that's the logic
[13:21] <JonnyAlpha> A little slow?
[13:21] <edmoore> balloon has a fixed burst size
[13:21] <edmoore> yeah a bit slow
[13:22] <edmoore> i'd shoot for 5
[13:23] <edmoore> you don't have to hit 30km on the nose, you could just get a 1200g balloon and loads of gas and completely nail 30km and salute it as you whizz past
[13:23] <edmoore> on the way to 36km
[13:23] <edmoore> at 6m/s
[13:24] <JonnyAlpha> Ha ha - limited budget, Ill aim for 5 with a ighter payload to use a 350 or 500 :-)
[13:24] <edmoore> fair enough
[13:24] <edmoore> where are you launching from?
[13:24] <swaledale> ye from what ive learned on here, better to give it more gas and go quicker if altitude barrier is important, to make sure it makes it
[13:32] <JonnyAlpha> Top LH corner of North Devon June 22.
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[13:37] <daveake> Try not to be too set on a date/location especially if near the coast
[13:38] <daveake> and get yourself a decent irc client :/
[13:39] <mfa298> decent irc client or decent ISP ?
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[13:41] <JonnyAlpha> Sorry moved out into the garage and changed WiFi
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[13:44] <SpacenearUS> New vehicle on the map: 03HB9FDK-10 - 12http://tracker.habhub.org/#!qm=All&q=HB9FDK-10
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[14:04] <edmoore> JonnyAlpha: at least the winds take you into the midlands
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[14:59] <JonnyAlpha> Just finished my DIY colinear, cheched all the coax joins and found no shorts, after assembling it I tested the N counnector with a continuity meter and there is a circuit between the centre core and the outer metal shield?
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[15:12] Nick change: jan64_ -> jan64
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[15:20] <SpacenearUS> New vehicle on the map: 03Car_chase - 12http://tracker.habhub.org/#!qm=All&q=Car_chase
[15:23] <boutatrain> I'm planning a launch on 18th June, but how likely is it anyone will be able to help me track the flight at 3am? I'd like to get some images of sunrise but beginning to think no one will be awake to help track it and as my kit failled last time I'm thinking I might need to have a re-think. Anyone got an opinion?
[15:24] <SM0ULC-Reb> well, always someone awwake :)
[15:24] <SM0ULC-Reb> and, try do get a backup tracker, picotracker of some kind
[15:26] <SM0ULC-Reb> boutatrain: another tip, get a real irc-client
[15:26] <SM0ULC-Reb> like mirc , kvirc etc
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[15:32] <boutatrain> I have a secondary tracker in the capsule, but realtime tracking is really helpful. SM0ULC-Reb just installed mIRC at your suggestion :)
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[15:53] <SpeedEvil> https://twitter.com/SarcasticRover
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[17:10] <PE2BZ> !flights
[17:10] <SpacenearUS> 03PE2BZ: Current flights: 03YAM-1 10(8912), 03UBSEDS15 434.600 CONTESTIA 16/1000 10(d812)
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[18:09] <AndyEsser> Well that was fun :)
[18:09] <amell> just noticed UBSEDS15 - how long has it been flying for?
[18:09] <AndyEsser> Spent the day at Bangor Uni having an induction to go over on their Fridays to use Laser Cutters, CNC machines, 3D Printers
[18:09] <AndyEsser> They had a nice Keysight oscilloscope and a reflow oven
[18:11] <SA6BSS-Mike> amell: 2016-04-30
[18:11] <amell> a month. how cool
[18:11] <amell> bodnaresque in duration
[18:12] <amell> what does it need to beat? 4 times round the world?
[18:13] <SA6BSS-Mike> 134 days or 4 laps I think
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[18:13] <SA6BSS-Mike> 9 laps :)
[18:15] <fsphil> AndyEsser: oooh nice expensive toys
[18:16] <AndyEsser> fsphil: 3d printed myself a companion cube today
[18:16] <AndyEsser> but will likely 3d print an enclosure for my HAB
[18:24] <Lunar_Lander> cool!
[18:28] <mattbrejza> 3d printed cases are a little on the heavy side though
[18:29] <AndyEsser> mattbrejza: I'll go back to my aluminium enclosure idea then :P
[18:35] <SpacenearUS> New vehicle on the map: 03KC1FNS-11 - 12http://tracker.habhub.org/#!qm=All&q=KC1FNS-11
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[19:20] <SpacenearUS> New vehicle on the map: 03KD2EAT-6 - 12http://tracker.habhub.org/#!qm=All&q=KD2EAT-6
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[19:34] <AndyEsser> Don't suppose anyone is around this weekend to give me a quick tutorial on KiCAD PCB layout?
[19:38] <fsphil> I bounced through a few online ones when making my board
[19:39] <AndyEsser> with the decent kit I saw at Bangor today (btw - they're interesting in SatNOGS so hoping they'll also stick a 434 Mhz Antenna - and maybe steerable yagi - any maybe LORA stuff on the roof)
[19:39] <AndyEsser> I need to just get the PCBs ordered and done - then when I next have a free Friday can solder, program and test 10 trackers :)
[19:46] <Lunar_Lander> AndyEsser, do you know the videos by chris gammell?
[19:47] <Lunar_Lander> they are a quite good way to get started
[19:47] <Lunar_Lander> also not too long iirc
[19:48] <AndyEsser> cheers
[19:48] <AndyEsser> will dig them out tomorrow
[19:48] <Lunar_Lander> :)
[19:48] <AndyEsser> also, really want to fit everything on a 50mm * 50mm board... so might have to shed some things :(
[19:48] <Lunar_Lander> like all flight computer components?
[19:49] <fsphil> I managed 50x30 :) though mine is not a flight board, no gps
[19:50] <AndyEsser> GPS, MCU, TX is minimum
[19:50] <Lunar_Lander> it could be feasible
[19:50] <AndyEsser> but I also have: SD Card, RTC, Backup battery, LiPo Charging system, TTL-USB...
[19:50] <Lunar_Lander> yea
[19:51] <Lunar_Lander> I got an avr with osc and microsd and FTDI and USB onto one of my decks, MTX2 and ublox on another
[19:51] <mfa298> you could always got stackable if there's stuff you don't always want / havn't designed for yet
[19:51] <Lunar_Lander> yea
[19:51] <fsphil> you'll be playing with the layout of this for a while :)
[19:51] <Lunar_Lander> cubehab
[19:51] <AndyEsser> mfa298: yea, thinking I'll put a stackable header of some sort for Power + I2C bus anyway, so I can always extend if I want to
[19:51] <AndyEsser> seems a shame to lose the stuff above
[19:51] <AndyEsser> that's what I wanted as my "minimum"
[19:52] <AndyEsser> will see when I start t olayout
[19:52] <AndyEsser> fsphil: but it'll be PERFECT :)
[19:53] <SA6BSS-Mike> there will always be pcb v2 :)
[19:53] <AndyEsser> Yep :)
[19:53] <AndyEsser> when I move to the ARM chips :)
[19:53] <fsphil> I added loads of headers that I probably didn't need, but they've proved handy for debugging and testing
[19:54] <fsphil> LEDs turned out to be too bright too
[19:54] <AndyEsser> heh
[19:55] <AndyEsser> was more impressed that one of the technicians at the place today knew of Rockoons :)
[19:57] <Lunar_Lander> yay
[19:59] <mfa298> I wonder if you could sensibly / safely use a laser cutter on polystyrene, that would let AndyEsser use fun toys to build a suitable payload box.
[20:00] <AndyEsser> it can cut certain types of foam
[20:01] <fsphil> I've wondered about using a router
[20:01] <mfa298> There are some things you're not supposed to cut on them as they give off nasty gases (nasty for the machien as well as humans)
[20:01] <fsphil> know someone who has one
[20:01] <AndyEsser> heh
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[20:01] <AndyEsser> fsphil: on polysyterene?
[20:01] <mfa298> PVC and some forms of plywood from memory (plywood depended on the glue I think)
[20:02] <fsphil> AndyEsser: yeah. it's normally used for wood but I don't see why it couldn't work with poly
[20:02] <fsphil> might make a mess :)
[20:02] <AndyEsser> try it and see ;)
[20:02] <AndyEsser> depends how rigid the polystyrene is
[20:02] <AndyEsser> what's the worst that can happen ;)
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[20:03] <fsphil> bits polystyrene stuck to everything and everyone
[20:03] <AndyEsser> hehe
[20:04] <mfa298> is that much different to cutting wood with one.
[20:04] <mfa298> cnc's seem to get wood dust everywhere.
[20:05] <sirus> hey is there a way to dump the raw data from a finished flight on habhub?
[20:05] <fsphil> not as much static with wood
[20:05] <fsphil> but yeah it does get everywhere too
[20:06] <cm13g09> evening mfa298
[20:08] <AndyEsser> apparently the AVR TQFP package is only 9mm x 9mm
[20:09] <Upu> large
[20:09] <Geoff-G8DHE-M> Sirius, Yes http://habitat.habhub.org/ept/
[20:09] <AndyEsser> Upu: small for the scale I'm working atm
[20:10] <Geoff-G8DHE-M> sirus, see the link above
[20:10] <Upu> :)
[20:10] <Upu> TQFP packages are the easiest solder you'll do
[20:12] <fsphil> if I can do it anyone can
[20:14] <sirus> thx
[20:14] <Lunar_Lander> Upu, we might have an order incoming
[20:15] <Upu> thanks for the notice Lunar_Lander I'll prepare the troops
[20:15] <AndyEsser> Upu: good - :)
[20:15] <AndyEsser> I imagine getting very annoyed when it comes to soldering these boards
[20:15] <AndyEsser> speaking of which
[20:15] <sirus> Geoff-G8DHE-M: weirdly my flight is not in that list ( http://tracker.habhub.org/#!mt=roadmap&mz=15&qm=3_days&mc=35.11181,-114.77343&f=K7SDV ) also strange data point from the past showed up
[20:15] <Upu> Well just have some desolder braid to hand
[20:15] <Upu> invaluble
[20:15] <AndyEsser> how do you manage to solder a board with components on both sides?
[20:15] <fsphil> the thinner braid
[20:15] <Upu> solder one side
[20:15] <Upu> turn it over
[20:16] <Upu> solder the other ?
[20:16] <AndyEsser> in a reflow oven?
[20:16] <fsphil> I bought some recently and accidenlty got 1.4mm stuff
[20:16] <AndyEsser> not hand soldering these
[20:16] <Geoff-G8DHE-M> sirus, if it was APRS it doesn't touch Habitat merely displayed on spacenear.us
[20:16] <Upu> well you don't really
[20:16] <sirus> ahhhh
[20:16] <Upu> but you glue the components on
[20:16] <Lunar_Lander> :)
[20:16] <fsphil> try to keep the bottom of the pcb for mostly ground plane
[20:16] <Geoff-G8DHE-M> you need to generate payload and flight docs for Habitats attention
[20:16] <Upu> I've avoided any dual sided stuff for production
[20:16] <Upu> so far...
[20:16] <AndyEsser> fsphil: was hoping I could hit my 50*50 by having SD Card + power and USB on one side, and the rest on the other ;)
[20:17] <Lunar_Lander> Upu, I tried to use a vaisala QFH antenna with my ublox but one day it went quite well, getting lock within 3 minutes, the next day it didn't get it after well over 30 mins of waiting
[20:17] <fsphil> oh, a few parts like that will be fine
[20:17] <AndyEsser> SD card and backup battery were always going to be underside, but those take screws at least ;)
[20:17] <fsphil> but if you keep the fiddly parts on top, reflow those
[20:17] <fsphil> and hand solder the parts on the bottom
[20:17] <AndyEsser> (by power and USB - I don't mean the connectors - I mean the ICs for it all as well)
[20:17] <AndyEsser> hmm k
[20:17] <AndyEsser> well, will just have to see how things go when I get around to laying it out
[20:17] <AndyEsser> :)
[20:18] <fsphil> best not to. future you will hate current you
[20:18] <AndyEsser> hehe
[20:18] <AndyEsser> all versions of me hate all versions of me :)
[20:18] <sirus> Our go pros froze right when all sound drops out :( still got some great footage and will be building some powered heaters I think
[20:18] <AndyEsser> fine... will do the layout this weekend and see
[20:19] <fsphil> yeah you might still manage it
[20:19] <AndyEsser> and then order the rest of the components for prototyping, and if it all behaves - will send it off to China to get made :)
[20:19] <fsphil> I messed around with the layout for ages. probably more than I needed to
[20:19] <Geoff-G8DHE-M> sirus what temperatures or was it battery failure ?
[20:19] <AndyEsser> fsphil: linky?
[20:19] <fsphil> of the board?
[20:20] <AndyEsser> yarp
[20:21] <fsphil> http://gerblook.org/pcb/UkGt9jhK6QnR2SYFuG6aRb
[20:21] <AndyEsser> loadsa space!
[20:21] <AndyEsser> what's U3?
[20:22] <fsphil> rfm95w
[20:22] <fsphil> radio
[20:22] <AndyEsser> ah
[20:22] <AndyEsser> better size than the MTX by the looks of things
[20:22] <sirus> Geoff-G8DHE-M: Will do full data dumps when I get back to Seattle, there were the internal batteries and an external powerbank, powerbank never shut off.
[20:22] <fsphil> yeah it's tiny
[20:23] <sirus> no lens fogging which was awesome though! should have some rad 4k footage to share from 3 perspectives
[20:23] <fsphil> I'll make the USB pads a bit longer next time, to make it easier to rework them
[20:23] <Geoff-G8DHE-M> did you use the cases for the gopro?, in which case no cases!
[20:23] <sirus> No cases
[20:23] <fsphil> my first attempt had too much solder paste, and it all bridged
[20:24] <sirus> milled out gopro shaped holes in 1" pink foam but didn't put a backing on it as I figured they would self heat (fuckers get super hot shooting 4k)
[20:25] <fsphil> it's usually the case which fogs up
[20:25] <Geoff-G8DHE-M> yes in low pressure it suprises people!
[20:25] <Geoff-G8DHE-M> so it was the lens itself? Had it been changed ?
[20:26] <fsphil> AndyEsser: the MTX will be easier to use. if I was building a flight computer, I'd probably stick with one of those
[20:26] <Lunar_Lander> mtx is quite nice
[20:27] <fsphil> it's through hole too, so something you can consider putting on the bottom of the board
[20:28] <sirus> Geoff-G8DHE-M: didn't change lens out, didn't use any antifog, didn't do a nitrogen diffusion, it just "worked" thx dry nevada!
[20:28] <sirus> Heres how the gopros were mounted https://imgur.com/a/1xbEJ
[20:28] <sirus> will add electric heaters to the backs next time
[20:29] <fsphil> it's unlikely they got cold
[20:29] <Geoff-G8DHE-M> suprised then its not normally a problem, unless moisture has been allowed into the lens itself ?
[20:29] <sirus> They all failed at different times too, first the front, then the back, and the bottom last.
[20:30] <fsphil> they might have overheated
[20:30] <Geoff-G8DHE-M> Do you know trhe external temp ?
[20:30] <Geoff-G8DHE-M> ah failed or fogged up ?
[20:31] <sirus> Thats a good point on the overheating
[20:31] <fsphil> the air might be cold but it's very thin
[20:31] <sirus> they failed as in stopped recording and were off when we cracked the case on landing
[20:32] <fsphil> where the batteries fine after landing?
[20:32] <AndyEsser> fsphil: Yea - I ahve an MTX here that I use for prototyping - simple enough to work with - just huge
[20:32] <Geoff-G8DHE-M> Ah right yes overhlity then!eating is a distinct possib
[20:32] <AndyEsser> err
[20:32] <fsphil> typing failure lol
[20:32] <sirus> fsphil: yeah they were fine and powered up just fine, they were at 100% as the external battery pack never died
[20:32] <AndyEsser> Checksum Failure
[20:32] <Geoff-G8DHE-M> humm yes control codes!
[20:33] <Geoff-G8DHE-M> comes from overheating when typing ;-)
[20:33] <AndyEsser> hehe, saw a car on the drive this morning whose reg plate ended in UDP
[20:33] <AndyEsser> turned the passenger in the car
[20:33] <AndyEsser> "Not sure whether he'll get to his destination or not"
[20:33] <AndyEsser> Was so happy I was in the car with someone geeky who laughed :)
[20:33] <Lunar_Lander> XD
[20:33] <sirus> hehe
[20:34] <fsphil> lol
[20:34] <Geoff-G8DHE-M> Maybe the fogging was smoke ;-)
[20:35] <sirus> Geoff-G8DHE-M: I didn't have any fogging, I was super happy about that part.
[20:36] <SpacenearUS> New vehicle on the map: 03SP9UOB-rs41 - 12http://tracker.habhub.org/#!qm=All&q=SP9UOB-rs41
[20:36] <Geoff-G8DHE-M> Ah miss read the bit about NO fogging!
[20:38] <sirus> We attempted to fly an iridium 9505A for some internet connectivity but I couldn't get it working in time, wvdial connects and pppd takes over, I get like 3 pings out and then the connection dies and I have to redial the directinternet gateway
[20:38] <sirus> If I am able to get the pings out at all
[20:39] <fsphil> wvdial, blast from the past that
[20:40] <sirus> newt.phys.unsw.edu.au/~mcba/iridiumLinux.html
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[20:55] <SpacenearUS> New position from 03VK9WI after 0314 hours silence - 12http://tracker.habhub.org/#!qm=All&q=VK9WI
[20:56] <mfa298> cm13g09: evening
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[21:31] <AndyEsser> people watching SpaceX launch? http://www.spacex.com/webcast
[21:35] <fsphil> nice weather
[21:36] <AndyEsser> https://www.youtube.com/watch?v=zBYC4f79iXc
[21:36] <AndyEsser> probably better stream
[21:36] <fsphil> https://www.youtube.com/watch?v=wPYOtCFSLKw
[21:36] <fsphil> technical webcast, no presenters
[21:37] <AndyEsser> I like the presenters
[21:38] <daveake> I like that big bug
[21:39] <fsphil> wheeeeeeeeee
[21:40] <AndyEsser> whoosh
[21:42] <fsphil> wonder if that was one of the recovered first stages
[21:42] <AndyEsser> no
[21:42] <AndyEsser> those 3 are still in the hangers
[21:42] <AndyEsser> #1 is going to be displayed outside HQ
[21:42] <AndyEsser> #2 is used for tests
[21:42] <fsphil> oh stage 1 video from orbit
[21:42] <AndyEsser> they're planning on re-using #3 later this year
[21:42] <fsphil> ah
[21:43] <AndyEsser> (was mentioned earlier in the stream)
[21:43] <Lunar_Lander> 3?
[21:44] <fsphil> if it lands...
[21:44] <Lunar_Lander> do they have three successful landings already?
[21:44] <Lunar_Lander> ah
[21:44] <AndyEsser> yes
[21:44] <fsphil> well, the landing part is pretty certain
[21:44] <AndyEsser> fsphil: don't jinx it ;)
[21:44] <AndyEsser> only done it once from GTO
[21:44] <fsphil> oh it's definitly landing
[21:44] <fsphil> just how softly remains to be seen :)
[21:44] <fsphil> oh man that video is great
[21:45] <AndyEsser> haha
[21:45] <fsphil> you can really see the ground coming up to meet it
[21:45] <fsphil> I wonder if they'll be friends
[21:45] <lz1dev> https://www.youtube.com/watch?v=wPYOtCFSLKw
[21:45] <lz1dev> technical stream has s1 camera
[21:45] <lz1dev> as it descending
[21:45] <fsphil> video of the restart
[21:46] <AndyEsser> is the fin on fire?
[21:46] <fsphil> camera getting dirty
[21:46] <daveake> ah cool like this
[21:46] <fsphil> and lost the video
[21:46] <fsphil> that was very cool while it lasted
[21:46] <daveake> stupid gopro case
[21:47] <lz1dev> clean air ;)
[21:47] <fsphil> lol
[21:47] <fsphil> eeeee
[21:47] <fsphil> c'mon
[21:47] <Vaizki_> spacex putting one down on the ship again?
[21:47] <fsphil> hah
[21:47] <fsphil> lol
[21:47] <Vaizki_> hehe
[21:47] <AndyEsser> nice
[21:48] <fsphil> success
[21:48] <AndyEsser> Vaizki_: yea
[21:48] <Lunar_Lander> YAY!!!!
[21:48] <AndyEsser> third time now
[21:48] <Vaizki_> damn
[21:48] <lz1dev> AndyEsser: 4th
[21:48] <fsphil> that seemed to come in sideways really quickly
[21:48] <AndyEsser> lz1dev: 3rd on drone
[21:48] <AndyEsser> 4th landing in total
[21:48] <daveake> wow
[21:48] <lz1dev> man i miss that long range view
[21:48] <Vaizki_> that was quick and assertive
[21:48] <lz1dev> its almost like cgi from futuristic movie
[21:49] <fsphil> no video from anything now
[21:49] <Lunar_Lander> hm
[21:49] <fsphil> telemetry not updating either
[21:49] <Lunar_Lander> wasn't it first landing orbcomm 2 and then second landing was some time ago and this is the third?
[21:50] <fsphil> nah, defintily no.4
[21:50] <AndyEsser> no they did a third last week, or fairly recently
[21:50] <fsphil> first on land, then one on the boat
[21:50] <Lunar_Lander> oh
[21:50] <Vaizki_> so routine now
[21:50] <fsphil> then a night time boat one
[21:50] <fsphil> and one after that iirc
[21:50] <fsphil> yeah this one
[21:50] <fsphil> duh
[21:50] <Vaizki_> have they released any info on how reusable are those first stages really?
[21:51] <Lunar_Lander> ah JCSAT-14?
[21:51] <AndyEsser> Vaizki_: planning on reusing the #3 landing one later this year
[21:51] <fsphil> all gone quiet on the stream still
[21:51] <AndyEsser> although said most of the components are actually already recertified for launch
[21:51] <fsphil> oh, LOS is expected
[21:52] <Vaizki_> AndyEsser: mmmm nice
[21:53] <AndyEsser> not planning on reflying #1 and #2 though
[21:53] <fsphil> it will be seriously impressive if they manage to do all three of these on the big heavy launch
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[21:54] <fsphil> doesn't take these things long to cross the atlantic
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[21:57] <SpeedEvil> Arguably five of the last six successfull if they had redesigned the legs.
[21:57] <SpeedEvil> which is really quite impressive indeed.
[21:57] <fsphil> yeah that one that landed fine but fell over
[21:58] <fsphil> that was annoying
[21:58] <SpeedEvil> Tehre was an earlier 'bunny hop' then fall over.
[21:58] <SpeedEvil> But that was going a fair bit faster horizontally.
[22:00] <arjunnaha> Has anyone heard from David Miller recently, I emailed a number of weeks to ask about a potential launch location. While I appreciate that he is quite busy, I don't want a situation where the day before the launch, I got an email saying that we were too close to Gatwick.
[22:00] <daveake> Well yes, he's around of course otherwise this week's launches wouldn't have happened
[22:02] <arjunnaha> Hmm, I'll have to try ringing him again on Monday, he's probably driven up the wall with me trying to contact him lol
[22:02] <AndyEsser> Monday is a Bank Holiday
[22:03] <AndyEsser> don't phone on Monday
[22:03] <arjunnaha> I forgot!
[22:03] <fsphil> yay day off
[22:03] Action: fsphil makes a big list of plans to not do
[22:03] <AndyEsser> :)
[22:04] <arjunnaha> We get a week off 😛
[22:04] <fsphil> would be nice
[22:05] <arjunnaha> UK education system ftw
[22:06] <fsphil> video back
[22:06] <fsphil> looks like they've got hailstones in space
[22:06] <AndyEsser> always looks like it's in a blizzard
[22:07] <fsphil> NICE
[22:07] <AndyEsser> stop using Imperial...
[22:07] <AndyEsser> *sigh*
[22:07] <AndyEsser> The payload is 3000kg
[22:07] <AndyEsser> the engine can give 210000lbs
[22:07] <SIbot> In real units: 210000 lbs = 95254.3 kg
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[22:07] <AndyEsser> thanks SIbot
[22:07] <fsphil> yay SIbot is back
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[22:07] <fsphil> always going that extra mile
[22:08] <fsphil> loving the blue flame
[22:12] <fsphil> and it drifts into the darkness
[22:12] Action: AndyEsser waves
[22:12] <fsphil> so, stage 2
[22:12] <fsphil> do they leave it up there?
[22:12] <AndyEsser> I guess so
[22:12] <AndyEsser> was just thinking that
[22:15] <russss> iirc, they aim to do a third burn to re-enter the second stage
[22:15] <fsphil> "OK I've released it. Guys? Hello?"
[22:16] <AndyEsser> poor S2
[22:16] <russss> but the GTO will decay to re-entry in about a year if that doesn't happen
[22:17] <russss> great landing. watched it from the pub.
[22:20] <Vaizki_> I knew they'd have a pub on that ship
[22:20] <Vaizki_> do you still have eyebrows?
[22:21] <russss> heh, I wish
[22:29] <AndyEsser> http://www.xkcd.com/1356/
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[22:47] <SpacenearUS> New position from 03UBSEDS15 after 0314 hours silence - 12http://tracker.habhub.org/#!qm=All&q=UBSEDS15
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[23:26] <Rob_vk1kw_> a second VK3 balloon yes??
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[00:00] --- Sat May 28 2016