highaltitude.log.20121121

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[05:11] <Guest57154> could anyone tell me the prediction software of balloon trajatory?
[05:11] <Guest57154> *which website
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[05:20] <fsphil> Guest57154: it's at http://habhub.org/predict/
[05:25] <Guest57154> thx
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[07:25] <KF7FER> Here is a link to my latest APRS Tracker https://dl.dropbox.com/u/8240668/bTracker/bTracker.zip
[07:26] <KF7FER> compressed file includes images and Eagle files
[07:26] <KF7FER> comments would be appreciated :-)
[07:27] <KF7FER> Or for the individual files, try https://dl.dropbox.com/u/8240668/bTracker/
[07:29] <oh7lzb> The latter link says 404.
[07:33] <KF7FER> sorry am struggling a bit with dropbox. Didn't know I couldn't share a folder within the public folder
[07:34] <KF7FER> https://www.dropbox.com/sh/905t8qb04a83exo/akS_0Amtke might be better
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[07:40] <Upu> morning Brad
[07:40] <Upu> will take a look in a bit, there is a clearance error up by C6
[07:40] <Upu> just going to walk the dog
[07:41] <KF7FER> thanks I'll look at that
[07:42] <KF7FER> might have run that a bit tight but it passed DRC and the board seems to work (not that means anything)
[07:47] <Upu> https://www.dropbox.com/s/cc64pp352le2bai/Fusion_eagle_rule_v1.1.dru
[07:49] <KF7FER> thanks! That was a fairly simple fix. Done
[07:49] <Upu> really off out with the dog now back soon
[07:49] <KF7FER> np. thanks for the help
[07:50] <fsphil> that's a spoiled mutt :)
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[08:09] <KF7FER> for the record the board supports all the features of the Trackuino 1.4 firmware and weight is 20g (less battery/antenna)
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[08:09] <KF7FER> not nearly as cool as some of the small trackers done here but pretty good for an APRS tracker
[08:10] <KF7FER> run time on 4xAA is 30hrs... 12hrs on 2xAA... 8hrs on a 9v battery
[08:10] <KF7FER> sorry 2xAA = 4xAAA
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[08:16] <KF7FER> since it's so quiet here... I hated the hassle of routing digital pins to the expansion header so I did a "Rev E" (in the dropbox folder) that ditches 100% Trackuino compatibility for better board routing, analog expansion pins, and DS18b20's for the internal/external temperature sensors.
[08:16] <KF7FER> The only loss in the "Rev E" board is the buzzer
[08:16] <KF7FER> but wow the board routes so much nicer :-)
[08:18] <Upu> Well Brad the USA needs a light tracker
[08:18] <Upu> we had someone on here last night launching one of these beasts
[08:18] <Upu> http://www.byonics.com/mt-aio
[08:19] <Upu> must be 600g with batteries
[08:19] <KF7FER> wow. 10 watts no receive in the air? kinda unfriendly
[08:20] <KF7FER> I'm trying for inexpensive and simple - assuming it works of course :-)
[08:20] <Upu> I don't see why it wouldn't
[08:20] <Upu> having look now
[08:21] <KF7FER> thanks. so far variants of that design have flown 4x to over 60k feet... and been recovered as well
[08:21] <nick_> If I can be a little off topic, does anyone have any suggestion of where to look for cool tech jobs?
[08:22] <KF7FER> I'd suggest craigslist if you're a "ninja" or a "rockstar" ;-)
[08:22] <KF7FER> developer that is
[08:23] <Upu> You seem to have changed sizes between resistors and caps
[08:23] <KF7FER> well I'd prefer to stick with 1206 since I'm hamfisted and have a bunch of them but when size became an issue I switched it up a bit
[08:23] <KF7FER> I think smaller helped routing
[08:24] <Upu> just checking one of my boards stupid imperial/metric sizes
[08:24] <KF7FER> I sure wish the US had went metric like they promised me in grade school
[08:25] <nick_> Rather than using perfectly sensible units like the area an ox can plow in a day?
[08:25] <KF7FER> works for me ;-)
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[08:26] <eroomde> fuel economy is an inverse area
[08:26] <x-f> morning
[08:26] <KF7FER> the original design was all 1206 but I felt a little cramped and tried to get more modern
[08:26] <eroomde> which is conceptually a wierd one for me
[08:26] <KF7FER> too many oxen?
[08:27] <Upu> well personally I'd use the 0603 resistors, slightly smaller but still solderable
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[08:27] <KF7FER> I'm getting there slowly
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[08:27] <KF7FER> next time I promise ;-)
[08:28] <Upu> I'd put 2 bStop squares on the rear of the board at the corner of the HX1
[08:28] <Upu> so you get 2 pads to solder the case too
[08:28] <nick_> Is it really and inverse area? km travelled / litres of petrol
[08:28] <KF7FER> is that the in the HX1 part in the ava lib?
[08:29] <Upu> no its not on the part just make 2 squares from bStop
[08:29] <KF7FER> oh... you mean at the bottom
[08:29] <Upu> yes
[08:29] <Upu> 1 sec
[08:29] <KF7FER> that's a pretty cool idea. I just did a board today and was complaining how the other side "flopped" a bit. soldering it down would help lots
[08:31] <Upu> http://i.imgur.com/bDT6Q.png
[08:31] <Upu> like that
[08:31] <KF7FER> wow, very cool. thanks! That makes total sense
[08:32] <KF7FER> it's just in the bstop layer?
[08:32] <KF7FER> err... bStop
[08:32] <Upu> http://i.imgur.com/5Vv6N.png
[08:33] <Upu> bStop yeah layer 30 if you've not messed with the defaults
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[08:34] <KF7FER> cool, thanks.
[08:36] <Upu> mitre the corners, changed the width of your poly gnds to 0.254 :
[08:36] <Upu> http://i.imgur.com/Sm9KY.png
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[08:37] <Upu> Brad
[08:38] <KF7FER> looks nice, thanks!
[08:38] <Upu> where is the GPS ?
[08:38] <SP9UOB> Hi all
[08:38] <Upu> hey SP9UOB
[08:38] <KF7FER> oh.. it's off to the right off JP1
[08:38] <Upu> no TX line to the GPS ?
[08:38] <SP9UOB> fsphil: are You here ?
[08:38] <costyn> what does JPx stand for? i understand its where you connect other components, but... is it an acronym for anything?
[08:38] <Upu> he's in Australia SP9UOB but should be about
[08:39] <KF7FER> nope. I'm cheating by using a 3.3v GPS - that's 5v tolerant - since don't do level translation you can't send to the GPS
[08:39] <KF7FER> simple=cheap
[08:39] <Upu> hmm
[08:39] <KF7FER> JPx? where is that?
[08:39] <Upu> High altitude compatible out of the box ?
[08:39] <costyn> I mean... JP1 JP2 etc
[08:39] <SP9UOB> Upu: i've made some test wth ssdv over aprs - and - what a shame aprs is not 8 bit clean (aprs-is)
[08:39] <Randomskk> costyn: jumper
[08:40] <Upu> ok cool I think I saw you talking about it
[08:40] <costyn> Randomskk: thx
[08:40] <Randomskk> generally
[08:40] <Randomskk> sometimes also more generally "connector"
[08:40] <Upu> KF7FER just to throw a spanner into the works
[08:40] <costyn> Upu: nice touch, the rounded edges :)
[08:40] <Upu> I was going to do a board like this
[08:40] <KF7FER> Upu: SkyTraq has proven high-altitude GPSes
[08:40] <Upu> however
[08:40] <Upu> I was going to power the HX1 separately and run everything else at 3.3V
[08:40] <SP9UOB> so i must redesign it - to maitain 7-bit safe base85 i think
[08:41] <Upu> just seemed tidier
[08:41] <costyn> it does
[08:41] <costyn> more stylish hehe
[08:41] <Upu> I just like everything on the same board personally
[08:42] <Upu> Ah Skytrak = Venus
[08:42] <Upu> Venus638LPx
[08:43] <Upu> Datasheet still says 18km but I know you've used it higher
[08:44] <KF7FER> Upu: pretty much yes. and I have, as well as most of the Trackuino guys
[08:44] <Upu> btw at 3.3V the ublox is a direct swap for the Venus
[08:44] <KF7FER> right... which is why I don't use it on this board - I cheated :-)
[08:45] <KF7FER> I've got a ublox board coming in the next few days
[08:45] <KF7FER> hopefully it works :-)
[08:45] <KF7FER> cheated= I used the 5v tolerance to limit parts count
[08:46] <Upu> I'm going to knock together a board based on the pico design with a HX1 on it
[08:46] <Upu> if you decase the HX1 its only 2.5g
[08:46] <KF7FER> how do you decase it? heat?
[08:46] <KF7FER> or bending?
[08:46] <KF7FER> I've got a pile here :-)
[08:47] <griffonbot> Received email: Jens Pirnay "[UKHAS] Re: advices for a balloon flight"
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[08:48] <Upu> just solder braid sucked up the solder around the case
[08:48] <Upu> take your time though as you need to put alot of heat into it
[08:48] <Upu> http://www.youtube.com/watch?v=Zh2dYZHYrDw&feature=g-upl
[08:49] <KF7FER> sorry but I can't do that... yet. I'll have to look closer. Scares me
[08:50] <KF7FER> I'd hope you'd share a soldering video ;-)
[08:50] <fsphil> I've got an IC I need to solder on an old amiga motherboard, but I'm afraid to do it. it's been sitting there for more than a year :)
[08:50] <Upu> I can't find a camera that will film the soldering properly
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[08:51] <KF7FER> fsphil: you should get one of those Aoyue desoldering stations - works amazingly well
[08:51] <KF7FER> god live Amiga
[08:51] <KF7FER> :-)
[08:51] <fsphil> I have one, but still afraid :)
[08:51] <KF7FER> live=love
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[08:51] <KF7FER> you should practice on some old boards... is really cool to do
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[08:52] <KF7FER> I sure miss my old A3000 running SVR4
[08:54] <fsphil> this one is an a1200, and the video chip has worked itself from the board on one side
[08:54] <fsphil> if I put a little bit of weight on it, it works fine
[08:54] <KF7FER> kinda like my ex-wife? <bad joke, sorry>
[08:54] <fsphil> ba-dum, tsh
[08:54] <SP9UOB> KF7FER: :-)
[08:55] <KF7FER> I try
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[08:56] <SP9UOB> hi Radim
[08:56] <KF7FER> so rounded edges on the PCB are really cool... wonder if it costs more
[08:56] <radim_OM2AMR> Hi Tomek
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[08:57] <costyn> Upu: I thought the case was there to shield the other electronics from RF?
[08:57] <radim_OM2AMR> SP9UOB, I saw your 50 MHz solar powered tracker, great !
[08:57] <SP9UOB> radim_OM2AMR: :-) just playing with new technologies ;-)
[08:58] <SP9UOB> radim_OM2AMR: btw it stopped working when the sun was about 5 deg over horizon
[08:59] <SP9UOB> radim_OM2AMR: do You have possibility to listen on 6m ?
[09:00] <Upu> probably costyn :)
[09:00] <radim_OM2AMR> SP9UOB: I can build some antena for 50 MHz, when will you launch this payload ?
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[09:01] <SP9UOB> radim_OM2AMR: dont know yet. But propably on 1 dec i launch 100g kaysam ballon with 437.600 MHz tracker
[09:02] <SP9UOB> radim_OM2AMR: RFM02 transmitter
[09:02] <radim_OM2AMR> SP9UOB, oh, great. We received challenging launch date proposal for january (snow, ice etc..) :-)
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[09:03] <SP9UOB> radim_OM2AMR: cool ;-)
[09:03] <KF7FER> Upu: BTW... if I do those bStop areas I assume I'm connecting to ground as well?
[09:04] <Upu> well you have a bottom ground plane so they are just exposing that
[09:04] <KF7FER> ok... I was just wondering if it's more than for physical support
[09:04] <Upu> both really
[09:05] <KF7FER> thanks, I'll do that. Though the idea of removing the case from an HX1 scares me. Maybe that's because they cost me more than they do you ;-)
[09:05] <radim_OM2AMR> SP9UOB: that's the right word - COOL :-) I will test Raspi and SSDV in that flight, or maybe 23 cm ATV
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[09:05] <Upu> Well I have a very "f?ck it" attitude towards pulling apart electronic equipment these days :)
[09:05] <SP9UOB> radim_OM2AMR: im working on imaging over APRS :-)
[09:05] <Upu> morning jcoxon
[09:06] <KF7FER> SP9U0B: very cool. using something like SSDV?
[09:06] <jcoxon> hey Upu
[09:06] <radim_OM2AMR> SP9UOB: Great Tomek, that's the way also
[09:06] <Upu> sorry I missed you yesterday went to see Skyfall
[09:07] <SP9UOB> KF7FER: was inspired with ssdv - but aprs (aprs-is to be precise) is not 8 bit safe
[09:07] <SP9UOB> just look: http://aprs.fi/?c=raw&limit=50&call=SP9UOB-2&view=normal&first=1752748711
[09:08] <KF7FER> SP9U0B: so what is the alternative?
[09:08] <radim_OM2AMR> Ohh Tomek, red sea :-D
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[09:08] <KF7FER> hurts my eyes ;-)
[09:09] <SP9UOB> so additional encoding is needed. also some redundand data with interleaving would be usefull
[09:10] <KF7FER> seems easier to abandon APRS or am I just being lazy?
[09:10] <KF7FER> I'm afraid most of the gear I've got can't do transmissions of any length
[09:10] <fsphil> aprs's main (only?) advantage is the existing network of receivers
[09:11] <SP9UOB> KF7FER: aprs have a HUGE network of distributed listeners
[09:11] <KF7FER> I agree. I'm lazy :-)
[09:14] <KF7FER> I was just thinking from a payload point of view... could something like the HX1 work?
[09:14] <KF7FER> APRS has worked very well for me in pretty much every regard - I think it's great for HAB use, at least until the payload gets close to the ground in a remote area
[09:14] <KF7FER> hopefully you're there as well ;-)
[09:16] <KF7FER> but images over APRS... I wonder if you'd give Bob a heart attack?
[09:16] <SP9UOB> KF7FER: i personally use HX1 in my tracker: http://sp9uob.verox.pl/IMG_9935.JPG http://sp9uob.verox.pl/IMG_9936.JPG
[09:17] <fsphil> Bob did try it once
[09:17] <fsphil> so it's not a new idea :)
[09:17] <SP9UOB> KF7FER: just imagine the possibility of sending images in emergency events (sorry for my bad english)
[09:17] <KF7FER> SP9U0B: nice. I was just worried it couldn't handle the transmission rates required for an image is all. I too use the HX1.
[09:17] <fsphil> Bob's version was uncompressed, so very very slow
[09:17] <fsphil> and greyscale
[09:17] <SP9UOB> KF7FER: transmission rate is constant 1200 baud
[09:18] <KF7FER> images are great, I agree. More is better. I was just worried about hardware limitations is all
[09:18] <SP9UOB> ok, i try to code something that works in this weekend
[09:19] <KF7FER> I know, for example, that the Trackuino project supported a transmitter (MX146) that couldn't do long/frequent transmissions
[09:19] <KF7FER> would love to see your work SP9U0B
[09:20] <SP9UOB> ok - i must do now - work :-(
[09:20] <SP9UOB> cu all
[09:20] <KF7FER> bye
[09:20] <fsphil> I do wonder if there's an APRS-IS filter that would allow me to read the image packets
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[09:20] <fsphil> for the live page
[09:21] <f6agv> hi all
[09:21] <KF7FER> would be really cool. I monitor a weekly net for SSTV and it's always amazing to see a picture come across the radio
[09:21] <SP9UOB> fsphil: just filter for aprs-destination field
[09:21] <SP9UOB> like IMAGE or so - well see
[09:22] <SP9UOB> f6agv: http://sp9uob.verox.pl/IMG_9935.JPG http://sp9uob.verox.pl/IMG_9936.JPG especially for Your blog :-)
[09:22] <fsphil> good idea
[09:23] <f6agv> thanks morning SP9UOB
[09:24] <SP9UOB> see You all
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[09:27] <KF7FER> Upu: in case I forgot I'd love to see your take on a board with the HX1. Seems like 5v is quite a hassle
[09:27] <Upu> nah
[09:27] <Upu> just a separate regulator
[09:27] <Upu> and turn the HX1 off entirely when not using
[09:28] <KF7FER> do you need to cut it's 5v power? I did some tests and found it used no power unless I tripped the PTT. But I'm using low-end equipment to measure things
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[09:29] <Upu> Well its always going to take something
[09:29] <Upu> and entirely off is good for power consumption
[09:29] <KF7FER> is it worth putting a transistor/mosfet there to control it?
[09:29] <fsphil> the enable pin can turn it pretty much totally off iirc
[09:30] <KF7FER> I kinda figured zero is too good to be true ;-)
[09:30] <fsphil> as much as a mosfet anyway
[09:30] <KF7FER> fsphil: That's what my tests showed, but that's with a RS meter
[09:30] <Upu> the EN pin is the EN on the internal regulator
[09:30] <Upu> so its fine
[09:31] <KF7FER> so you switch the 5v regulator off until needed?
[09:31] <KF7FER> by the HX1 of course
[09:31] <fsphil> well the hx1 doesn't have an internal vreg
[09:32] <KF7FER> I was thinking you'd need a vreg to generate it's power, that's what I'm thinking
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[09:33] <fsphil> yea it needs regulated 5v
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[09:34] <Upu> I was going to have 2 DC DC boosts on the board
[09:34] <Upu> one for the HX1, one for the rest of it
[09:35] <KF7FER> fsphil: right, I know. I was wondering about the regulator to control it's 5v
[09:36] <KF7FER> Upu: very cool. So can that run from 2xAA?
[09:36] <Upu> 1 x AA if needed
[09:36] <KF7FER> you can get 5v for a decent run-time from 1xAA?
[09:37] <KF7FER> of course you're running the board itself at 3.3v (or less)
[09:39] <KF7FER> I suggested a board that used a pair of DC/DC boosts on the same board to my local group and I got.... silence. I thought it was a crazy idea
[09:41] <KF7FER> SP9UOB: Mine's shorter, assuming size matters :-) But you've got an SD card, so I bow to your greatness
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[09:48] <rjharrison> Wow it gets bigger here everytime I login
[09:48] <fsphil> tis mr. rjh!
[09:48] <KF7FER> guess size does matter
[09:49] <Upu> wow
[09:49] <rjharrison> I'm thinking about organising a UKHAS 2013 canendar for distribution at cost to UKHAS members looking for the best 12 images from the past flights / launches
[09:49] <Upu> helllllo stranger
[09:49] <Upu> oh we got some belters :)
[09:49] <fsphil> meh, it'll be all daves :)
[09:49] <Upu> daveake show Mr Harrison "the" picture
[09:50] <Upu> Work still busy Rob ?
[09:50] <rjharrison> THe idea was to get everyone to email me their favorite images. I'll upload them and UKHAS memebers vote for their favoirites. The top 12 win and get put into a calendar for 2013
[09:50] <daveake> haha
[09:50] <daveake> just a mo :)
[09:50] <Upu> nosebleedkt has some stunning images too
[09:51] <fsphil> oh yes
[09:51] <rjharrison> Then anyone who wants a calendar pays the cost of production and postage
[09:51] <daveake> http://www.flickr.com/photos/daveake/7971034906/in/set-72157631498431574
[09:51] <daveake> ^^ cast eye to bottom-centre
[09:51] <Upu> thats another balloon if you miss it Rob
[09:51] <nosebleedkt> yo
[09:51] <rjharrison> Wow is that another baloon below
[09:51] <daveake> and you will see Darkside's balloon shortly before burst
[09:51] <rjharrison> That is good
[09:52] <daveake> Probably 10m across there
[09:52] <Upu> https://dl.dropbox.com/u/63720513/Images/HAB/Nosebleed/620510_502209346459781_645899209_o.jpg
[09:52] <nosebleedkt> My images are already in greek amateur astronomy calendars :D
[09:52] <Upu> https://dl.dropbox.com/u/63720513/Images/HAB/Nosebleed/7738891384_bbbf849a5b%20IMG_0876_stitch.jpg
[09:52] <rjharrison> Stunning
[09:52] <Upu> thats what happens when you launch in Greece :)
[09:52] <daveake> hah
[09:53] <nosebleedkt> :P
[09:53] <Upu> https://dl.dropbox.com/u/63720513/Images/HAB/14.07.2012.Launches/jnmZQ.jpg
[09:53] <Upu> that one for sure
[09:53] <Upu> Miss May I think
[09:53] <daveake> Aside from mine :p, I do like nosebleedkt's
[09:53] <daveake> lol
[09:53] <rjharrison> Upu, LOL
[09:53] <Upu> https://dl.dropbox.com/u/63720513/Images/HAB/14.07.2012.Launches/vlcsnap-2012-07-14-23h40m01s150.png
[09:53] <daveake> Miss cold and soaked having fought a field of triffids
[09:54] <rjharrison> Upu, nice I recognise the PINK
[09:54] <nosebleedkt> Upu, nice capture!
[09:54] <Upu> indeed :)
[09:54] <daveake> I like http://www.flickr.com/photos/daveake/7970542444/in/set-72157631498431574/ too
[09:54] <Upu> thats actually BUZZ
[09:54] <Upu> yeah that is nice
[09:54] <rjharrison> So calendar sounds like a good idea?
[09:54] <daveake> yes :)
[09:54] <nosebleedkt> you can see all my good images here -> https://www.facebook.com/media/set/?set=a.531010533579662.138394.259791880701530&type=3
[09:54] <nosebleedkt> dont have to login
[09:55] <Upu> *cough*
[09:55] <Upu> https://dl.dropbox.com/u/63720513/Images/HAB/Photo0052.jpg
[09:55] <nosebleedkt> lol
[09:55] <Upu> https://dl.dropbox.com/u/63720513/Images/HAB/WJwLO.jpg
[09:55] <nosebleedkt> who shot that?
[09:55] <nosebleedkt> upp
[09:55] <rjharrison> Great so long as we can get hi res from there too then we can add them to the gallery for voting.
[09:55] <nosebleedkt> uppu
[09:55] <rjharrison> Have put this on the UKHAS homepage http://ukhas.org.uk/
[09:56] <Upu> Thats daveake's payload taking a picture of Darkside's
[09:56] <Upu> rjharrison http://ukhas.org.uk/frontpage:logo
[09:57] <nosebleedkt> On the right down corner is where I live: https://www.facebook.com/photo.php?fbid=547105551970160&set=a.531010533579662.138394.259791880701530&type=3&theater
[09:57] <rjharrison> nosebleedkt, superb pics how clear is that air
[09:57] <Upu> So are you coming back to do some launches Rob or is work still busy ?
[09:57] <nosebleedkt> rjharrison, greece got no clouds. just moisture and heat !
[09:58] <nosebleedkt> and that mountain in the background is Olympus
[09:58] <daveake> More pinkness - http://www.flickr.com/photos/daveake/7038083877/in/set-72157629717191599
[09:59] <rjharrison> I'm going to be coming back in the new year. Not least of all because the wife is complaing about the 3 grand of balloon kit in the study that hasnt been used in 2 years
[10:00] <daveake> lol
[10:00] <rjharrison> nosebleedkt, well you definitly on for haveing a few pics in the calendar.
[10:00] <rjharrison> Need to come up with something different too
[10:00] <Upu> indeed
[10:00] <nosebleedkt> i appreciate it that much. You helped me all those years to get that payload ready. So the images belong to you !
[10:01] <nosebleedkt> Now im preparing a 2nd mission. I accepted some donations too so I do it faster this time.
[10:01] <griffonbot> Received email: Dave B "Re: [UKHAS] Pico Board"
[10:02] <rjharrison> nosebleedkt, Not at all you've done a stunning job!!!
[10:02] <nosebleedkt> and this time im planning to land it on Aegean sea so it can capture lots of islands
[10:02] <rjharrison> That sounds cool.
[10:02] <nosebleedkt> fun !
[10:03] <nosebleedkt> maybe my company i work for, will give me 500e to complete it and i put a logo of them in front of a camera as advertise.
[10:03] <rjharrison> Hum perhaps a launch in Greece next year. that sounds like a lot more fun than rainy England
[10:03] <fsphil> yay
[10:03] <daveake> Not sure it's calendar-material, but this one was funny - http://www.flickr.com/photos/daveake/7915724456/in/set-72157630074184822
[10:04] <rjharrison> Yep we need a few pics that are different as the canendar can all look a bit samey
[10:04] <nosebleedkt> you are welcome to launch from greece. if you can combine some holidays at summer it would be great for me to help you.
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[10:04] <rjharrison> Some pics of tracking set ups etc whould be good and some of the more interesting recoveries
[10:04] <daveake> From the same flight - people walking straight past the parachute as if this was a perfectly normal occurrence in their village - http://www.flickr.com/photos/daveake/7915652898/in/set-72157630074184822
[10:05] <nosebleedkt> help you get pictures like this: https://www.facebook.com/photo.php?fbid=531013746912674&set=a.531010533579662.138394.259791880701530&type=3&theater
[10:05] <nosebleedkt> :P
[10:05] <rjharrison> nosebleedkt, Perhaps that should be in the masterplan. Is it quite easy to get permission for launch
[10:05] <nosebleedkt> you dont need permission to launch here
[10:05] <fsphil> gotta be wasier than the UK
[10:05] <fsphil> see!
[10:05] <daveake> wasier = way easier?
[10:05] <Upu> http://www.daveakerman.com/?attachment_id=804 Ultrapico
[10:06] <daveake> Ultrapinko
[10:06] <fsphil> yes I'm inventing new wards
[10:06] <nosebleedkt> I spoke with the highest in civil air service and he told me we don't have laws regarding such things.
[10:06] <rjharrison> Great even better
[10:06] <nosebleedkt> they advised me so i just don't release near an airport.
[10:07] <daveake> So we just need you to get a few tanks of H2 then :)
[10:07] <rjharrison> Yep common sense prevails
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[10:07] <nosebleedkt> the H tank was bigger than me
[10:08] <nosebleedkt> 9 cub.m3
[10:08] <nosebleedkt> and i just needed <5 to reach 38.8km
[10:08] <nosebleedkt> so next time i will definately find a small tank
[10:10] <rjharrison> RIght best get on with work but hopefully will get some pics together for calendar and perhaps a page on the back of honerable mentions.
[10:10] <fsphil> my submission, spot the payload: http://www.flickr.com/photos/fsphil/5821005077/
[10:10] <Upu> https://dl.dropbox.com/u/63720513/Images/HAB/295944_4131057167389_639123057_n.jpg
[10:10] <Upu> From Rossen Geiorgiev
[10:10] <Upu> http://www.flickr.com/photos/49543726@N04/
[10:11] <rjharrison> Each pic should have a sentance with it describing view, altitude and project name.
[10:11] <Upu> is that yours nosebleedkt ?
[10:12] <costyn> Upu: doesn't look familiar and the quality isn't very good, and the name is wrong, so I'm guessing no :)
[10:12] <nosebleedkt> Upu, which one?
[10:12] <Upu> Rossen Geiorgiev
[10:12] <nosebleedkt> lol
[10:12] <Upu> https://dl.dropbox.com/u/63720513/Images/HAB/295944_4131057167389_639123057_n.jpg
[10:12] <Upu> I like that image
[10:12] <nosebleedkt> Im Kostas!
[10:12] <Upu> I loose track
[10:12] <nosebleedkt> from Constantin :D
[10:13] Action: costyn fistbumps nosebleedkt ; firstname bro's :)
[10:13] <nosebleedkt> hahaha
[10:13] <fsphil> oh dear
[10:13] <fsphil> first it's the daves
[10:13] <cuddykid> what's this - a HAB calendar? Good idea!
[10:13] <costyn> Costyn = also derived from Constantin
[10:14] <fsphil> it's about time!
[10:16] <rjharrison> fsphil, where is the paylod in that image
[10:17] <nosebleedkt> fsphil, how did you make that photo ?
[10:18] <fsphil> rjharrison: right in the middle
[10:20] <cuddykid> rjharrison: are you putting it together? (that is if I've got it right - you're making a HAB calendar) :)
[10:20] <daveake> Reminds me of trying to get Upu's box out of a tree .. http://www.flickr.com/photos/daveake/6892064294/in/set-72157629717191599
[10:20] <cuddykid> haha daveake
[10:20] <costyn> daveake: nice
[10:20] <daveake> it worked :)
[10:20] <Upu> cut down
[10:20] <Upu> non HAB style
[10:21] <daveake> Using string as the communications medium
[10:21] <cuddykid> better than my approach which involved hurling stones for about an hour and slowly coming down to a height where a big branch could get it down!
[10:21] <cuddykid> was thinking about getting a quadcopter for xmas as I've already got the APM2 - with a small mod it might well prove useful
[10:22] <daveake> :)
[10:25] <nosebleedkt> my recovery was boring despite the fact i was looking for it for 6 days in total wrong place
[10:25] <nosebleedkt> https://www.facebook.com/photo.php?fbid=496328763714506&set=a.493992450614804.128626.259791880701530&type=3&theater
[10:25] <nosebleedkt> due to the stupid coordinate zero bug
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[11:08] <gonzo__> I've fallen foul of that sort of bug in previous non-HAB GPS projects. So for my tracker code, I decided to just copy the NMEA string elements directly to the RTTY. Doing as little processing of the data in the air as poss.
[11:08] <gonzo__> (Really should get my finger out and fly it again, rather than just talking about it!)
[11:10] <SpeedEvil> nosebleedkt: so you first hired a boat, and went off the coast of Africa?
[11:16] <gonzo__> And he didn't get boarded by pirates?
[11:18] <nosebleedkt> :P
[11:19] <nosebleedkt> that's the truth
[11:19] <nosebleedkt> https://www.facebook.com/photo.php?fbid=500058060008243&set=a.493992450614804.128626.259791880701530&type=3&theater
[11:24] <costyn> nosebleedkt: quite a distance. No chance of stumbling across it by accident while looking :)
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[11:30] <nosebleedkt> :D
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[16:04] <New2Balloon> Quick ? as I sit watching YouTube... Why do all the launchers appear to be wearing latex(?) gloves?
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[16:05] <craag> The grease from your skin damages the latex of the balloons.
[16:05] <New2Balloon> Perfect... Thanks :)
[16:07] <gonzo___> I thought it was just a fetish thing!
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[16:17] <New2Balloon> latex not rubber..... :)
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[16:40] <Randomskk> hey eroomde wasn't it you saying autonomy were a bit dodgy?
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[16:51] <navracwork> I just got an ft-726R
[16:52] <navracwork> I wanted one since I was a teenager
[16:52] <jcoxon> navracwork, they are massive
[16:53] <navracwork> well not that big - but looks pretty
[16:53] <navracwork> pretty good on 2m - a bit deaf on 70cm
[16:53] <navracwork> ive been comparing it against the funcube
[16:54] <navracwork> 2m the ft wins, 70cm the funcube has it by a little
[16:54] Action: jcoxon loves his ft790r
[16:54] <navracwork> funcube plus hab amp however wins hands down - so i guess im going to have to buy it a preamp
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[16:55] <navracwork> i must admit a ft790 is next on the shopping list
[16:55] <navracwork> plus an old lowe hf225 or possibly an ft101e
[16:56] <navracwork> only thing wrong with this ft726 is the clarifier doesnt work so 100hz is the minimum step
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[16:58] <navracwork> ah the clarifier is starting to slightly work - decoupling caps leaking on the encoder then
[16:59] <jcoxon> navracwork, did some supercaps experiments
[16:59] <jcoxon> not sure if i told you
[16:59] <navracwork> how did they go?
[17:00] <navracwork> i know you were building a circuit - but didnt know you'd got to testing
[17:00] <jcoxon> http://wiki.ukhas.org.uk/projects:picoatlas:picoatlasviii
[17:00] <jcoxon> did some silly tests really
[17:01] <jcoxon> 300baud really helped
[17:02] <navracwork> yep - tx current is quite a lot 25mA or so. So shortening the tx time by a factor of 6 will help a lot
[17:02] <navracwork> cyclic powersaving mode for the gps next?
[17:03] <jcoxon> well there was no GPS on this
[17:03] <navracwork> ah ok
[17:03] <jcoxon> i think i need to get a 2.5v reg
[17:03] <navracwork> what was the cutoff voltage? 1.6V
[17:03] <jcoxon> yeah
[17:04] <jcoxon> starts drifting
[17:04] <navracwork> so you were only using 1.8-1.6V so 2.5 - 1.6 is going to really extend those times
[17:04] <navracwork> 6x in theory
[17:05] <navracwork> 4.5x
[17:05] <jcoxon> navracwork, yeah
[17:06] <navracwork> i tend to think a following boost regulator might not be worth it.
[17:06] <jcoxon> yes
[17:07] <jcoxon> i was thinking that
[17:07] <navracwork> once you get<1v you are hitting low efficiency so probably 60% step up efficiency and drawing 2x the current for the step up it might only give you 2 mins more
[17:07] <jcoxon> indeed
[17:09] <navracwork> how much did that supercap weigh? it wasnt in the datasheet
[17:11] <jcoxon> ummm not by it right now
[17:12] <navracwork> compared to say a AAA - lighter? heavier?
[17:13] <jcoxon> about the same
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[17:14] <jcoxon> i've also got a 1F one as well
[17:15] <jcoxon> https://www.sparkfun.com/products/10068
[17:15] <jcoxon> (actually i've got 2)
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[17:22] <navracwork> interesting dilemma then - a supercap will give you say an hour every night and smooth out the solar during the day, but a AAA will give you 15 hours - so i guess if the flight is less than a week the AAA wins
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[17:26] <jcoxon> yeah
[17:26] <jcoxon> well i'll have a play
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[18:23] Nick change: prog` -> prog
[18:24] <SpeedEvil> navrac: for pico?
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[19:39] <Laurenceb_> or a rechargeable cell
[19:40] <Upu> you're going to struggle to keep a rechargable cell above 0'C
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[19:44] <Mark_> Hello
[19:44] <Upu> hello
[19:47] <eroomde> i don;t think jpl should be allowed to do this primary school playground stuff
[19:47] <Laurenceb_> lithium iron phosphate may work
[19:47] <eroomde> 'we've found something sooooooo exciting but we're not going to tell you'
[19:47] <Laurenceb_> if you can find a small enough cell
[19:47] <eroomde> 'ner ner nernerner'
[19:47] <Upu> yeah mildly annoying
[19:47] <Laurenceb_> eroomde: where?
[19:48] <Laurenceb_> oh jpl
[19:48] <Upu> because if it ain't the remains of a Cydonia Pyramid now I'm going to be pissed
[19:48] <eroomde> maybe if i promise to be on their football team they'll tell me
[19:48] <eroomde> well yeah
[19:48] <Laurenceb_> i though you were taking about those crazy balloon people
[19:48] <eroomde> i'm not sure they realise what the public perception of 'one for the history books' is
[19:48] <Laurenceb_> with airship to orbit
[19:48] <eroomde> for the public it would probably be finding a black obelisk
[19:49] <eroomde> as opposed to more likely being for the history of geology books
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[19:50] <Laurenceb_> wonder if there are small lithium iron phosphate cells
[19:51] <Upu> http://www.ebay.co.uk/itm/Authentic-A123-LiFePO4-26650-Lithium-Battery-3-3v-3S1P-9-9V-BMS-New-Cells-/271105106938?_trksid=p3284.m263&_trkparms=algo%3DSIC%26its%3DI%26itu%3DUCI%252BIA%252BUA%252BIEW%252BFICS%252BUFI%26otn%3D21%26pmod%3D290575961225%26ps%3D54
[19:51] <Upu> Operating Temperature-30°C to 55°C
[19:51] <Upu> however not sure what they charge at
[19:52] <eroomde> A123 have gone under haven't they?
[19:53] <eroomde> after being The Next Big Thing for about the last 5 years
[19:53] <Laurenceb_> wow didnt see that coming
[19:53] <Laurenceb_> Upu: ive seen -20C charge specced
[19:53] <eroomde> i think their stuff is in my trusty dewalt cordless drill
[19:53] <Upu> that would be of interest if possible
[19:55] <Upu> data sheet just says operating temp -30'C
[19:56] <Upu> On October 16, 2012, A123 filed for bankruptcy protection
[19:57] <eroomde> oh well
[19:57] <eroomde> they might be able to sell some ip to tesla or someone
[19:57] <eroomde> they can make specialist batteries too
[19:57] <eroomde> could*
[19:58] <eroomde> they made some super high charge, discharge (but lower power density) ones for F1 kinetic energy recovery systems
[19:58] <Upu> http://www.saftbatteries.com/doc/Documents/defence/Cube769/VL45EFe.e3741a09-74fd-4df4-8687-12997f445ef5.pdf
[19:58] <Upu> Note charge temp
[19:59] <costyn> eroomde: what's this about JPL? got link?
[20:01] <eroomde> http://www.universetoday.com/98599/i-am-sam/
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[20:03] <costyn> interesting
[20:03] <Upu> so where do they officially announce it ?
[20:04] <SpeedEvil> once all the team have completed their investments
[20:05] <Upu> where
[20:05] <Upu> not when :)
[20:05] <costyn> in the NPR interview apparently
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[20:19] <Upu> so when is that interview ?
[20:23] <eroomde> not sure specifically which interview but early december is when they're saying they'll be happy enough to say something
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[20:37] <Laurenceb_> i think they might have found an excuse to ask for more funding
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[20:50] <SpeedEvil> polishing all their resumes for a mars landing.
[20:53] <Laurenceb_> can someone help me with bash script
[20:53] <Laurenceb_> *scripts ?
[20:53] <Laurenceb_> i need to recursively copy all files matching a certain filter
[20:54] <Laurenceb_> from a directory structure into another identical directory structure
[20:56] <Laurenceb_> cp processed_data/**/*excel.csv Temp/**/*excel.csv
[20:56] <Laurenceb_> i want to do that, but in a proper way
[21:03] <x-f> there's -r param for recursive copying, but that's all i know, haven't experimented with it
[21:04] <eroomde> xargs is your friend
[21:05] <eroomde> eg
[21:05] <RG_LZ1DE1> so many wild cards
[21:06] <eroomde> ls *excel.csv | xargs cp {} path/to/new/folder
[21:06] <RG_LZ1DE1> find . -type f -name "*csv" -exec cp {} . \;
[21:06] <RG_LZ1DE1> :P
[21:06] <eroomde> where xargs basically puts the results of the previous command one-by-one into {}
[21:06] <mfa298> a couple of sets of find might do it (one to get a list of directories, then one to get files per directory
[21:07] <eroomde> it has some other flags if you want to deal with whitespace vs newlines vs whatever
[21:07] <eroomde> check man
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[21:08] <mfa298> handy hint i had from a friend, dont try getting the man page for find on google.
[21:08] <RG_LZ1DE1> :D
[21:09] <eroomde> nice
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[21:14] <Laurenceb_> ok
[21:14] <Laurenceb_> i made it work with rsync in the end
[21:16] <SpeedEvil> I've used find, with printf, to make a xargs commansline
[21:19] <RG_LZ1DE1> needs some perl somewhere in there
[21:20] <natrium42> rsync ftw
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[21:23] <natrium42> hi jcoxon
[21:23] <jcoxon> Hey
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[21:56] <G7PMO_Kev> Evening
[21:57] <eroomde> evening kev
[21:58] <G7PMO_Kev> how is everyone? After a day of horrible rain we seem to have a gorgeous clear night down here in Berkshire...
[21:58] <G7PMO_Kev> evening eroomde
[21:59] <fsphil> aah, I remember rain
[22:00] <eroomde> same here
[22:00] <eroomde> all the way over from you in oxfordshire
[22:03] <eroomde> might get the telescope out if it stays like this
[22:03] <G7PMO_Kev> Getting close to ready for my first launch, got two working trackers, video and still camera sorted, parachute and balloon sorted, NOTAM form in and waiting for CAA to get it processed, just Helium to buy and some aerials to make I think
[22:03] <G7PMO_Kev> eroomde - yea, good night for it, still and clear, do u do any astrophotography?
[22:03] <eroomde> no, apart from mobile phone down the eyepeice
[22:04] <eroomde> although i have always thought i would enjoy it
[22:04] <eroomde> really want to do some stuff with the comet next year
[22:05] <fsphil> the flaw with astrophotography is the best nights are the coldest
[22:05] <eroomde> :)
[22:05] <G7PMO_Kev> eroomde - I dont know if you can see this with out being friends with him, but these are my friends images who is far better at it than I am: http://www.facebook.com/media/set/?set=a.50509435902.84538.604140902&type=3
[22:05] <eroomde> oh golly
[22:05] <russss> nice
[22:05] <eroomde> pro
[22:05] <G7PMO_Kev> http://www.madpc.net/
[22:06] <eroomde> we have a nice meade 12" at work
[22:06] <eroomde> there is really no excuse not to get an adaptor for an slr
[22:06] <fsphil> ah, I know that url from the QCUIAG mailing list
[22:07] <G7PMO_Kev> fsphil - yea, he worked for me for a couple of years a few years ago now
[22:07] <G7PMO_Kev> from Southend
[22:09] <eroomde> i quite want a pair of decent binoculars
[22:10] <eroomde> as per the advice on his website
[22:10] <G7PMO_Kev> decent binoculars are good, nice wide view and easy to just take out for a quick look with out all the faffing or aligning!
[22:10] <fsphil> I'm selling my scope and gonna get a good pair of binos
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[23:11] <Laurenceb_> lol newsnight
[23:11] <Laurenceb_> "university of birmigham is in the hand of the fossil fuel industry"
[23:11] <Laurenceb_> riiiggghhhtt
[23:12] <Laurenceb_> i think their student protesters need to spend more time working on their hair
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[00:00] --- Thu Nov 22 2012