highaltitude.log.20130202

[00:00] <nigelvh> A tasty late lunch
[00:00] <arko> i was gonna say
[00:00] <arko> its 4
[00:01] <nigelvh> Yeah, I tend not to eat breakfast, then late lunch
[00:01] <arko> i just wish i hate more time to breakfast really
[00:01] <arko> oh thats what i'll do tomorrow
[00:01] <arko> now that this damn time machine is done
[00:01] <arko> no more early saturdays working on it
[00:01] <nigelvh> I don't eat breakfast because if I do I NEED lunch by 10.
[00:02] <arko> ah
[00:02] <nigelvh> Stupid metabolism
[00:02] <arko> good ol boot_stomach() function
[00:02] <nigelvh> Exactly
[00:02] <arko> its called by meal.eat('breakfast');
[00:03] <nigelvh> Or by energy reserves being depleted.
[00:04] <nigelvh> You should make sure that ends up in the code for the next rover. boot_stomach();
[00:06] <nigelvh> Perhaps start naming variables after cartoon characters.
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[00:07] <nigelvh> // This function does all sorts of awesome shit.
[00:08] <nigelvh> // Do the stuff with the thing if the bit indicates that junk is happening.
[00:09] <nigelvh> Most readable code EVER
[00:10] <Lunar_Lander> lol
[00:12] <nigelvh> BTW Lunar, here's a video that one of the students produced last year about our balloons class.
[00:12] <nigelvh> http://www.youtube.com/watch?v=gRQtO8H_-38
[00:14] <arko> :( i really want to go to UW
[00:14] <arko> one of my mentors in high school went there
[00:14] <nigelvh> Between the rockets and the balloons we have soe fun
[00:14] <nigelvh> some*
[00:15] <arko> you went there or are going there?
[00:16] <Lunar_Lander> thanks nigelvh
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[00:16] <nigelvh> I went there, and I volunteer with those classes now.
[00:16] <arko> :) neat
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[00:16] <Lunar_Lander> and the U of Wyoming has a long lasting balloon program as well
[00:17] <Lunar_Lander> they do aerosol research
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[00:18] <nigelvh> Here's one of our larger rockets: http://www.youtube.com/watch?v=qmx838BGPXM
[00:19] <nigelvh> For reference the rocket is 13 feet tall
[00:19] <arko> wow coo video
[00:20] <arko> woah rocket
[00:20] <arko> what was the engine?
[00:20] <nigelvh> I believe it was an N
[00:20] <nigelvh> Here's a compilation from our latest trip down to the Black Rock Desert http://www.youtube.com/watch?v=EncHFk5Rp5A
[00:23] <nigelvh> That's the perfect place for rockets. Miles and miles of flat.
[00:24] <arko> :)
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[00:24] <arko> some of the mohave rocket guys are going to be helping us with our hab in two months
[00:24] <arko> some really cool tracking beacons
[00:25] <arko> mohave is a great place too
[00:25] <arko> :P
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[00:26] <nigelvh> http://digitalnigel.com/wordpress/wp-content/uploads/2012/04/DSC00521.jpg
[00:26] <nigelvh> That's me on the right
[00:26] <nigelvh> Woo snowing on us in a desert! YAY!
[00:27] <nigelvh> Plus one of the gals was awesome enough to bring this masterpiece: http://digitalnigel.com/wordpress/wp-content/uploads/2012/04/Blackrock2012-285.jpg
[00:28] <nigelvh> Unfortunately, I'm one of the few with experience towing trailers, so I get to haul the porta-potties... http://digitalnigel.com/wordpress/wp-content/uploads/2012/04/BlackRock_B-097.jpg
[00:28] <nigelvh> There's a few more photos here: http://digitalnigel.com/wordpress/?p=1121
[00:29] <arko> trekiesss
[00:29] <arko> hah that snow is trippy
[00:30] <nigelvh> It's normally pretty cold down there, but this last year was the first it's snowed on us.
[00:30] <arko> you guys prep for it everytime?
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[00:31] <nigelvh> Oh yeah
[00:31] <arko> smart
[00:32] <nigelvh> We've occasionally had some random girl who doesn't know what camping is and thinks she'll be fine without a sleeping bag, but normally there's enough gear amongst the group to keep everyone toasty.
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[00:35] <arko> hah!
[00:35] <arko> yeah, people dont get that nature ain't nice
[00:35] <arko> deserts especially
[00:37] <nigelvh> Especially cold deserts
[00:38] <nigelvh> It may look like a desert, it may act like a desert, but it's the god damn arctic.
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[00:39] <arko> yep
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[01:06] <arko> damn it i forgot to ask eroomde my question
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[01:26] <hyte> does anyone know the pressure in a latex balloon immediately prior to burst?
[01:27] <nigelvh> Slightly above atmospheric pressure.
[01:30] <hyte> so the balloon doesn't add significant pressure?
[01:30] <nigelvh> Nope, that's the idea, that the balloon expands so keep the pressures the same, and at a certain point it can't expand anymore and bursts.
[01:35] <hyte> so i could blow up a balloon and make it burst?
[01:35] <nigelvh> Sure
[01:36] <nigelvh> In that case, you're trying to add pressure on the inside, but the balloon expands to equalize the pressure, and that will continue till it can't expand any farther and bursts.
[01:37] <hyte> ok, just trying to work out the advantage in make a zero pressure balloon using thin pe film
[01:37] <nigelvh> Granted, the latex will exert *some* force inward and increase the pressure, but in practice it's a pretty small amount.
[01:39] <SpeedEvil> it can be significant in weird cases, at very, very extreme altitude
[01:39] <SpeedEvil> the overpressure is several millibars
[01:39] <SpeedEvil> which can be significant when atmospheric pressure becomes comparable
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[01:41] <hyte> so max of a few millibars
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[01:41] <nigelvh> In odd cases
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[01:44] <hyte> cool, has anyone tried to make a film balloon as opposed to using a latex one?
[01:47] <nigelvh> There are all sorts of balloon materials. If you're making a non-latex balloon, then you may want to look into what are known as "Superpressure" balloons or "Zero Pressure" balloons.
[01:49] <hyte> i've been trying to weld thin pe film, its bloody hard and bloody thin
[01:49] <SpeedEvil> how thin?
[01:50] <SpeedEvil> a few people have tried that here
[01:50] <SpeedEvil> some with good results
[01:52] <hyte> i thing it is 7 g/sqm
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[01:56] <SpeedEvil> so ~7 um
[01:57] <hyte> erm, i worked this out a while a go, lots of people use different units for this, one min
[01:57] <SpeedEvil> I ended up with good results smearing it lightly with veg oil, and then using a warm soldering iron with a foil barrier
[01:57] <SpeedEvil> worked well
[01:58] <SpeedEvil> but clearly has issues for long lengths
[01:58] <SpeedEvil> water and pe have similar density
[01:58] <SpeedEvil> there are a million grams in a cubic meter
[01:58] <SpeedEvil> one gram per square meter is therefore about a gram
[01:59] <SpeedEvil> err
[01:59] <SpeedEvil> 1um
[02:01] <hyte> sorry i was giving the mass per unit area not volume
[02:02] <hyte> i think it was about 3 × 10-5 m thick
[02:04] <hyte> latex seems to max out at 5.2gm^-2
[02:10] <hyte> ahh see the density thing now, with all the hdpe and ldpe i came to the conclusion that thickness wasn't everything. HDPE has a max specific gravity of .97 and am mor limited by my suppliers. I don't have a temperature controlled soldering iron so have been using a hot knife and a cheep sealer
[02:10] <hyte> i can not recommend either
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[05:45] <arko_> Le tired
[05:46] Nick change: arko_ -> arko
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[07:13] <arko> hmmm
[07:13] <arko> what to do
[07:13] <arko> home for the first time in weeks (other than to just sleep)
[07:14] <arko> i think watching a space documentary while drinking a stout is a good idea
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[09:11] <craag> fsphil: If you're around, I have a simple question about your ssdv code.
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[10:02] <fsphil> craag: fire away .. also I see you're playing with 869mhz too
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[10:16] <nosebleedkt> hi
[10:16] <nosebleedkt> I got 100euros in donation
[10:16] <nosebleedkt> :D
[10:17] <Upu> congrats you're worth more than Greece
[10:17] <Upu> :)
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[10:21] <craag> fsphil: You get the picture data already in JPEG from the camera, and transmit it without decoding it at all?
[10:21] <craag> Yep on the 869, 17dBm works great at 600 baud!
[10:23] <fsphil> craag: yea I fetch the JPEG directly from the uart camera. I feed that through the ssdv library with produces the packets for transmittion
[10:23] <fsphil> which*
[10:24] <fsphil> the library actually does decode the jpeg, but not into pixels
[10:24] <craag> Ok, we ordered the linksprite JPEG camera, but due to a mail-routing issue it's now locked away until monday.. so we have a camera that just does raw data...
[10:25] <craag> like, raw rgb values..
[10:25] <fsphil> interesting
[10:25] <fsphil> I've been considering doing something like that
[10:25] <fsphil> the uart/jpeg cameras are silly money
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[10:25] <nosebleedkt> hahahaha
[10:26] <craag> So how would you suggest to interface it with the ssdv protocol?
[10:26] <fsphil> what hardware are you running the code on?
[10:26] <craag> (We are 24 hours into a 48 coding marathon competition, hence I can't wait til monday)
[10:26] <craag> mbed Cortex M3 @ 96MHz
[10:27] <fsphil> oooh
[10:27] <fsphil> does the camera stream the data line by line, or can you fetch bits at a time?
[10:28] <fsphil> actually if you have enough memory to store the raw image then that doesn't matter
[10:29] <craag> We'll have enough memory, are you suggesting to try compressing it to jpeg on the mbed?
[10:29] <fsphil> that's what I'm pondering
[10:32] <fsphil> you can either find a little jpeg encoder library, or hack ssdv to do the encoding
[10:33] <fsphil> it's missing the dct and zigzag bits, but it should be quite possible
[10:37] <craag> Ok, I've found a small-ish jpeg compression library, will give it a go!
[10:37] <craag> The plan is to send the pics over 869 at 600 baud.
[10:38] <fsphil> sweet! you might even manage 1200 but the drift might make it tricky
[10:38] <craag> Yeah, I had to dangle the gps out of the window here to get a signal, the draught was making 600 baud hard enough to track in a 4KHz passband. I'll give 1200 a try later on if there's time.
[10:39] <fsphil> I'm gonna have a play with encoding from raw
[10:41] <mclane> hi guys, I am experimenting with the same thing - what kind of transmitter are you using for 869 MHz?
[10:41] <craag> I'm using an RFM22
[10:41] <mclane> ah, ok
[10:42] <craag> Also allows me to listen to the channel, so I can put in some listen-before-talk code and get around (i hope) the 10% duty limit.
[10:42] <craag> No idea what the channel looks like at 3000m of course.
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[10:43] <mclane> I am playing around with some xbee-like modules (called XRF)
[10:44] <craag> Ah ok. I'm trying the standard RTTY on 869, then using a funcube dongle for RX.
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[11:06] <fsphil> aah cool, I'm using a radiometrix module for 869mhz
[11:11] <craag> What size (pixels) are the images you usually send over ssdv?
[11:14] <fsphil> my flights 320x240
[11:14] <craag> Found it
[11:14] <fsphil> I think dave uses 432x240
[11:14] <craag> Ok, cheers.
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[11:18] <fsphil> do you have an example raw image craag?
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[11:19] <craag> No. Another guy is still working on connecting the camera to the mbed.
[11:20] <fsphil> okie
[11:20] <craag> We only got hold of it about an hour ago.
[11:20] <craag> :P
[11:20] <fsphil> c'mon, chop chop
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[11:27] <craag> I had a single hour of sleep last night, and that was under a desk.
[11:28] <fsphil> I was about to ask
[11:28] <fsphil> I've read about contests like this
[11:28] <fsphil> after a good nights sleep, I probably still won't be finished before you
[11:29] <craag> Fortunately due to the camera fiasco, my team-mates had nothing to do last night, and so are well-rested.
[11:29] <craag> And smell better.
[11:29] <fsphil> lol
[11:29] <fsphil> you're already winners
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[11:30] <fsphil> what's the rules on third-party coders? even if I got this finished today would you be able to use it?
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[11:33] <craag> We just have to acknowledge all third-party code.
[11:33] <craag> It's very relaxed.
[11:33] <craag> End result has to be open-source.
[11:33] <fsphil> that actually sounds like fun
[11:34] <craag> It is just a bit of fun really, with free food for 2 days and some prizes up for grabs.
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[11:37] <craag> I was very far down the reserve list and only found out I had a spot on Wednesday, hence the delivery issue with the camera (despite it being sent special delivery), and the other guys didn't have any ideas, so I mentioned that I'd wanted to have a go at replicating your ssdv setup.
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[12:46] <Hix> Just dont the dry fit test on 100% pdfs of the board. All looking good to go.
[12:47] <Hix> Now to order the boards and the bits I don't yet have
[12:48] <Hix> Oh, and as it turns out I can get helium free of my bro....
[12:49] <Hix> Which is a definite bonus as my contract ended yesterday and I now have 0 income....
[12:49] <Hix> *off
[12:50] <Hix> board bottom http://goo.gl/k46jW
[12:50] <Hix> and top http://goo.gl/INYn9
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[13:04] <Hix> is Dave launching today or is it just a test
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[13:09] <craag> Hix: Just a test I think.
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[13:18] <Hix> ok cheers
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[13:26] <MrCraig> morning all
[13:26] <MrCraig> afternoon even.
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[13:29] <MrCraig> There were 6 launches today?!
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[13:29] <mclane> Hi guys, what is the name of your favorite pcb supplier?
[13:29] <Randomskk> MrCraig: mostly tests I think
[13:29] <Randomskk> think/hope
[13:29] <Randomskk> mclane: uhm. it depends onw hat y
[13:29] <Randomskk> on what you are looking for
[13:30] <Randomskk> especially as it's currently chinese new year, any of the chinese suppliers will be pretty slow atm
[13:30] <Randomskk> but american and EU suppliers are generally more expensive :P
[13:31] <mclane> I know, it will take me some time until I need it
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[13:31] <Hix> hackvana comes highly recommended by many on here - just about to place my order with them, I've used seeedstudio with success, but upgrade the postage
[13:31] <Randomskk> for chinese based, hackvana has really good support and takes care of you: http://tinyurl.com/hvpcbfaq but seeedstudio can be a bit cheaper depending on what you want
[13:31] <Hix> :) see
[13:31] <Randomskk> iteadstudio are similar to seeedstudio
[13:32] <Randomskk> batchpcb is very slow but can be the cheapest option if you don't want many PCBs
[13:32] <mclane> ah - hackvana was the name I was looking for! - Thanx
[13:32] <Randomskk> np ;)
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[13:39] <MrCraig> how do you close the debug window on the landing predictor?
[13:40] <Randomskk> "hide debug"
[13:40] <Randomskk> where you originally clicked "show debug", top right
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[13:41] <MrCraig> I didn't click it, I think its on by default and I'm working on a reduced size screen which makes it difficult.
[13:41] <MrCraig> I'll run it again on a bigger screen
[13:41] <Randomskk> it should only come up otherwise if there's an error iirc
[13:42] <MrCraig> I managed to drag the controls window into view and remove debug
[13:42] <MrCraig> thanks Randomskk
[13:46] <MrCraig> Predictions for next week aren't bad if I slightly over fill on the ground and aim for a lower burst - looks like a recovery just outside of maidstone. That's a lot better than belgium
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[15:28] <craag> fsphil: Are you around?
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[15:40] <cuddykid> woo, got an altitude graph working on the iOS habhub app :)
[15:40] <mattbrejza> i should probably do that at some point
[15:41] <cuddykid> it's tiny, but acts as a nice reference
[15:42] <mattbrejza> theres a few things that need adding but i was getting what i have working well first
[15:42] <cuddykid> also takes a while to process the data points
[15:42] <cuddykid> yep
[15:44] <cuddykid> one problem is rogue data points - whilst they are often removed from spacenear during flights, they remain displayed in the app as they're not removed from habitat
[15:44] <mattbrejza> yea i dont remove gps ones atm
[15:44] <mattbrejza> but its on my issues list
[15:45] <mattbrejza> or maybe its not :/
[15:45] <mattbrejza> o well
[15:49] <cuddykid> lol
[15:50] <fsphil> back now craag
[15:50] <cuddykid> the graphing library I'm using is a bit of a nuisance to code with
[15:51] <mattbrejza> i need to make sure they dont use too much RAM
[15:51] <mattbrejza> map overlays use a reasonable amout
[15:52] <craag> fsphil: I'm struggling a bit with the code in the ssdv encoder that recognises the end of the JPEG input image.
[15:53] <fsphil> aye-- it should be counting MCU blocks, it knows its at the end when it reaches a certain number
[15:53] <craag> Ah ok
[15:53] <craag> Could be a fault with my jpeg encode then.
[15:54] <fsphil> if(s->mcu_id >= s->mcu_count)
[15:54] <craag> The image finishes, but the encoder is still saying 'FEED_ME' :P
[15:54] <fsphil> might be worth printing out the mcu_id and the mcu_count
[15:54] <fsphil> after the last bit of image is fed to it
[15:55] <craag> ok, I'll try that.
[15:56] <fsphil> does the image data make sense? is it actually producing a proper image?
[16:08] <craag> Yep, just ran it on an x86 machine.
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[16:45] <jcoxon> afternoon all
[16:45] <MrCraig> afternon
[16:50] <Upu> afternoon jcoxon
[16:53] <jcoxon> hey Upu
[16:53] <Upu> afternoon
[16:53] <Upu> off shifts for a bit ?
[16:54] <jcoxon> yeah but busy weekend of real life
[16:55] <Upu> fair enough, give me a shout when you have some free time
[16:57] <eroomde> mornen
[16:57] <eroomde> afternoon
[16:58] <jcoxon> Upu, most evenings next week i think
[16:58] <Upu> ok cool
[16:59] <Upu> brb
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[18:37] <PaulCDR> UPU are you there?
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[18:49] <PaulCDR> anyone aware of the ordering options for for the ntx2 radio module over at upuaut store
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[18:54] <x-f> yes, but you should talk to Upu himself about this, i don't think i'm authorised to give such information - your patience will be awarded :)
[18:55] <PaulCDR> no prob x-f, ill sit tight
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[19:19] <Upu> you are authorised x-f :)
[19:19] <Upu> just PM it
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[19:21] <Upu> done
[19:21] <Upu> when he comes back
[19:29] <x-f> cool, will do next time
[19:32] <PaulCDR> got it x-f, cheers
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[19:51] <Lunar_Lander> hello
[19:55] <MrCraig> hi Lunar
[20:00] <Lunar_Lander> did anyone of you watch the South Korean orbital launch?
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[20:27] <costyn> can anybody identify these? http://i.imgur.com/GoCkTYR.jpg
[20:27] <costyn> and of course, good evening
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[20:31] <fsphil> google of course ever helpful: http://www.cheese-magnet.com/wp-content/uploads/2011/06/rlb14.jpg
[20:32] <costyn> fsphil: google wasn't being helpful at all in my quest to identify these mystery parts sent to me, they should've been 3.3v regs in a TO-92 package... but thats not the case
[20:32] <costyn> fsphil: but nice pic :)
[20:33] <costyn> also funny how they're supposed to be 2 of the same part, while one says RLB and the other RGB
[20:33] <fsphil> could be manufacturing date
[20:34] <fsphil> the 33g suggests they are 3.3v regulators
[20:35] <mattbrejza> you need to find on semi's list that 'decrypts' the family code
[20:35] <mattbrejza> but i cant find it
[20:35] <costyn> fsphil: intersting
[20:36] <costyn> does anyone know what package/form factor this is?
[20:36] <fsphil> DPAK
[20:37] <fsphil> I can find 17-33G but not 50-33G
[20:37] <costyn> is the 50-33g a range? 5v - 3.3v?
[20:38] <mattbrejza> very unlikely
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[20:38] <costyn> http://i01.i.aliimg.com/wsphoto/v0/654018109/10-PCS-NCP1117DT33RKG-1117-33-17-33G-TO-252-1A-font-b-VOLTAGE-b-font-REGULATOR.jpg this is the 17-33 you found right?
[20:38] <fsphil> 17 is model number I think
[20:38] <fsphil> er, 50
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[20:39] <fsphil> the 17 one I'm looking at the 17 is short for 1117
[20:39] Nick change: James -> Guest78671
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[20:41] <fsphil> it's an LP2950
[20:42] <costyn> cool
[20:42] <fsphil> http://www.onsemi.com/PowerSolutions/product.do?id=LP2950
[20:43] <costyn> so howdid you find that?
[20:44] <fsphil> looked on their website for voltage regulators ending in 50 :)
[20:44] <costyn> aah
[20:44] <fsphil> I figured it would be the same as for the 1117
[20:45] <costyn> ok so I guess they sent me this http://www.dickbest.nl/index.php?_a=viewProd&productId=8640 instead of http://www.dickbest.nl/index.php?_a=viewProd&productId=1590 which I ordered
[20:45] <costyn> I didn't see the TS2950 in other package forms
[20:46] <costyn> fsphil: well thanks man! :)
[20:46] <fsphil> I got some wrong stuff recently, and the crowd I got them off won't even reply to my emails
[20:48] <costyn> do these regs mind if they get 3.3v on their output pins?
[20:48] <costyn> or do I need a diode?
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[20:51] <costyn> fsphil: and that sucks. guess you wont be ordering there again?
[20:53] <fsphil> well I'll try again. they're normally alright
[20:54] <costyn> yea same with my guys.. components are cheap, shipping is cheap and they usually send the same or next day
[20:56] <hyte> does anyone have an example communication string with a negative NMEA longitude?
[20:57] <Randomskk> just change E to W :P
[20:57] <Randomskk> and fix the checksum but whatever, details
[20:58] <hyte> i'm working on the checksum
[20:59] <hyte> $$HYTE001,30,20:52:16,5129.90897,-00006.57841,59.2*18 doesnot work, and I'm unsure why
[20:59] <Randomskk> presumably you're already checking the checksum by making a new one and comparing it
[20:59] <Randomskk> that's not NMEA...
[20:59] <hyte> sorry, I'm parding the NMEA
[20:59] <hyte> parsing
[20:59] <Randomskk> http://habitat.habhub.org/logtail/
[20:59] <Randomskk> the log check says your checksum is invalid
[21:00] <Randomskk> (also please don't use XOR checksums, they're really bad, CRC16 is much better)
[21:00] <hyte> I'm trying but using a basic chip so transfering over is slow
[21:00] <Randomskk> ah
[21:00] <hyte> the checksum will be valid when my gps gets a lock
[21:00] <Randomskk> will it?
[21:00] <Randomskk> why is it not valid now?
[21:01] <hyte> too many commas I think
[21:01] <Randomskk> the checksum should still always be valid
[21:01] <Randomskk> you are generating it in your own code right?
[21:01] <hyte> yes
[21:01] <Randomskk> so it should always be accurate
[21:02] <mattbrejza> xor checksums -> :(
[21:03] <hyte> it is broken, must be missing a digit or something
[21:04] <hyte> its back working again
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[21:14] <MrCraig> is there an android app that can post to the habhub for chase cars etc?
[21:14] <MrCraig> if not, I might make that a project for a bit of fun.
[21:14] <mfa298> there is
[21:15] <mfa298> look for chase car tracker
[21:15] <MrCraig> I hoped you'd say that. I'll go consult the wiki for it, thanks :-)
[21:16] <mfa298> I can't remember if there's much on the wiki
[21:16] <MrCraig> I did at least find a link to the app - I'll post for friends to download a copy.
[21:16] <mfa298> there's also the habhub/mt web page version which acts as a chase car tracker
[21:17] <MrCraig> I'm taking a bit of a gamble this time - I won't have a yagi with me. Last time we did need it for a fix, but it's a logistic problem to take one along this time
[21:21] <craag> Possible pico launch early tomorrow morning from Winchester, hampshire btw.
[21:22] <hyte> hi, got it all receiving (sorry about the XOR) but its not registering the negative longitude?
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[21:23] <arko> Morning
[21:33] <mattbrejza> hyte: Exception in UKHAS main parse: (field latitude): Coordinate out of range (-90 <= x <= 90)
[21:34] <mattbrejza> are you sure the payload config doc is set to nmea?
[21:35] <mattbrejza> hmm the payload doc is : http://habitat.habhub.org/habitat/19435aee8bf1739df4cb65caf7cd260e
[21:35] <mattbrejza> lat/long seems set to nmea
[21:35] <mattbrejza> but checksum is set to ccitt-16 in the doc, but youre transmitting xor?
[21:37] <hyte> yep, doffo transmitting XOR, not even halfway on the other
[21:37] <hyte> the latitude is working the long is missing the -ve sign
[21:37] <mattbrejza> well the doc says ccitt
[21:38] <hyte> sorry, diff doc
[21:38] <hyte> using hyte002
[21:38] <hyte> HYTE002
[21:40] <mattbrejza> its using HYTE003
[21:40] <mattbrejza> which uses dd.dddd lat/long
[21:40] <mattbrejza> http://habitat.habhub.org/habitat/bf1657924ab40cf59d4de97a7f0dcb79
[21:41] <mattbrejza> the parser uses the latest doc that matches the callsign then not in a flight
[21:42] <hyte> AHH, I see. Is there anyway to delete?
[21:42] <mattbrejza> just make a new one
[21:43] <hyte> ok, had a problem as I was putting '\n' on the end and fldigi was interpereting it as the cxsum
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[21:51] <hyte> thank you
[21:52] <griffonbot> Received email: James "[UKHAS] Where to buy"
[21:52] <Randomskk> mattbrejza: updates on bladeRF
[21:52] <Randomskk> +6dBm output power at max saturation
[21:53] <mattbrejza> yea i read the lime micro page :P
[21:53] <Randomskk> though they recommend -3dBm to 0dBm for linear
[21:53] <Randomskk> heh
[21:53] <mattbrejza> yea stuff gets crappy near its limit (my summer)
[21:53] <Randomskk> heh
[21:53] <Randomskk> http://nuand.com/support.php they have its schematics etc
[21:54] <mattbrejza> not much to the schematics really
[21:54] <Randomskk> indeed
[21:54] <mattbrejza> copy recommended schematic, then connect micro <->fpga<-> radio
[21:54] <mattbrejza> the software on the other hand
[21:54] <mattbrejza> and decent board layout
[21:54] <mattbrejza> not so trival
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[21:54] <mattbrejza> not that the schematic is really trivial
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[22:00] <Randomskk> lol hm http://www.kickstarter.com/profile/adamgreig
[22:00] <Randomskk> I need to find some photography, music, theatre, art, dance and fashion to kickstart apparently
[22:00] <Randomskk> wait, not music.
[22:01] <Randomskk> photography, theatre, art, dance, fashion and food.
[22:01] <Randomskk> if only I lived in SF, so many food projects :(
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[22:42] <griffonbot> Received email: Chris Atherton "Re: [UKHAS] Where to buy"
[22:46] <griffonbot> Received email: Anthony Stirk "Re: [UKHAS] Where to buy"
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[23:23] <Laurenceb_> bladerf isnt getting much more cash :-/
[23:24] <mattbrejza> :(
[23:25] <zyp> did you give them yours?
[23:25] <mattbrejza> its been posted on HaD, but looking at hte number of 'it doesnt go below 300MHz, its missing out all the HAM stuff,' its probably missing its target audience
[23:26] <Laurenceb_> true
[23:26] <Laurenceb_> itd be nice to go a bit lower
[23:26] <Laurenceb_> oh well
[23:26] Action: Laurenceb_ zzz
[23:26] <mattbrejza> they have a converter in the pipline though
[23:28] <zyp> I'm not particularly interested in sub-300MHz bands, and it will do 2.4GHz, so for me it's all nice :)
[23:28] <Randomskk> yea I'm not sure why so many people are whining about sub 300
[23:28] <Randomskk> well
[23:28] <Randomskk> there's no high bandwidth channels there
[23:28] <Randomskk> youc an just use your normal radio anyway
[23:29] <fsphil> HF TV
[23:29] <Randomskk> http://www.kicktraq.com/projects/1085541682/bladerf-usb-30-software-defined-radio/
[23:29] <Randomskk> Laurenceb_: that said
[23:29] <Randomskk> the current trend is 173% funded
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[23:30] <mattbrejza> it was 190%ish yday ...
[23:30] <Randomskk> yea, see the trend graph there
[23:30] <Randomskk> but it's still >100% :P
[23:31] <Randomskk> it's the projection that's more useful but apparently there's not enough data yet
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[23:35] <Randomskk> still i'm hopeful
[23:35] <Randomskk> these things can get a big boost later in the timeline too
[23:38] <Upu> people are missing the point, if they get funded they are going to make down converters and up converters
[23:38] <Upu> to cover DC -> 10Ghz
[23:39] <mattbrejza> although for most of the people who want <300MHz this isnt really for them
[23:39] <Upu> no
[23:39] <mattbrejza> but they should still go and support it :P
[23:39] <Randomskk> amps would be nice
[23:39] <mattbrejza> also planned?
[23:39] <Upu> I'd say this isn't even for HAMs really
[23:39] <Randomskk> indeed
[23:40] <mattbrejza> what would a HAM do with 28MHz :P
[23:40] <Upu> with an up converter
[23:40] <Upu> and say a 30 meter dish
[23:40] <Upu> instaDSN :)
[23:40] <mattbrejza> actually you could see all of HF
[23:41] <joph> Randomskk, i want this device :D
[23:41] <joph> but probably it'll take months until its finished
[23:41] <Randomskk> may delivery for the normal one
[23:41] <Randomskk> they claim
[23:42] <joph> i'll order maybe one if it's out for usual customer
[23:42] <Randomskk> giving a few months' slack and maybe before the end of the year
[23:42] <Randomskk> joph: but where's the fun in that? :P
[23:42] <joph> maybe my university get's one ;)
[23:42] <Randomskk> it might never come out!
[23:42] <mattbrejza> well all the dev is done, so not too much to do for delivery?
[23:42] <Randomskk> mattbrejza: only scale it up to production...
[23:42] <Randomskk> the thing that so, so, so many kickstarter projects fail at.
[23:42] <joph> 400 bugs are a lot ;)
[23:42] <Randomskk> because they've never done it before and don't know what's involved and don't appreciate the difficulty
[23:43] <Randomskk> making a working prototype is one thing (and a lot of kickstarters barely manage that!)
[23:43] <Randomskk> but manufacturing volume runs is hard work
[23:43] <Randomskk> always that scaling is the stuff that takes ks projects ages
[23:43] <Randomskk> just look at pebble :P
[23:43] <Randomskk> though I hear it is finally shipping...
[23:43] <mattbrejza> esp. with BGA / DQFN
[23:43] <Randomskk> exactly
[23:44] <mattbrejza> lol DQFN
[23:44] <Randomskk> QC becomes v hard
[23:44] <mattbrejza> dual quad FN...
[23:44] <Randomskk> (flat no-leads)
[23:44] <Randomskk> and indeed
[23:44] <Randomskk> packages are hilarious
[23:44] <joph> i would prefer a programmable clock from ti instead of pebble ;)
[23:44] <Randomskk> though "SuperNEMO" is my favourite
[23:45] <Randomskk> joph: pebble's still programmable and looks a lot better :P
[23:45] <mattbrejza> still better then if apple had named packages
[23:45] <Randomskk> http://randomskk.net/u/supernemo.png what even is that
[23:45] <joph> these watches are always so huge
[23:45] <mattbrejza> thats the LNA/SAW for gps?
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[23:46] <joph> a small watch is enough for me
[23:46] <joph> but these stupid idiot's are just making small watches for women
[23:46] <joph> for man you gust get these huge devices
[23:47] <Randomskk> mattbrejza: yea
[23:47] <mattbrejza> because theyre MANLY
[23:47] <Randomskk> saw+lna+saw
[23:47] <mattbrejza> two SAWs?
[23:47] <mattbrejza> its it stacked of something
[23:47] <mattbrejza> suppose 1.5GHz SAW filters might be small...
[23:48] <mattbrejza> is it one of those bare silicon devices? (chipscale)?
[23:48] <mattbrejza> does supernemo stand for something i wonder
[23:48] <joph> maybe this kickstarter project ends like the funcube dongle
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[23:49] <Randomskk> mattbrejza: it's hugely small. wouldn't surprise me.
[23:49] <Randomskk> hugely small, heh.
[23:50] <Randomskk> very small is perhaps a better expression
[23:53] <mattbrejza> well it cant all be silicon
[23:53] <fsphil> https://twitter.com/Cmdr_Hadfield/status/297849771241115648/photo/1
[23:53] <russss> nice
[00:00] --- Sun Feb 3 2013