highaltitude.log.20130802

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[05:23] <Joel_re> spacekitteh!!
[05:25] <spacekitteh> !!
[05:30] <Joel_re> hey, does the nxt2 module == http://robokits.co.in/shop/index.php?main_page=product_info&products_id=75
[05:30] <Joel_re> or is the nxt2 module more reliable in low temperatures
[05:34] <nigelvh> That is not the NTX2 module, and I'm sure the consensus recommendation would be to use the real NTX2 module.
[05:35] <nigelvh> http://ava.upuaut.net/store/index.php?route=product/product&path=71_63&product_id=61
[05:36] <Joel_re> hmm
[05:36] <nigelvh> I don't use the NTX2 modules, but there are a number of people on here who do.
[05:38] <Joel_re> ok, well Im not in the UK and shipping it to where I live will probably cost me 2-3 times the amount
[05:38] <Joel_re> anyway, considering I go with the nxt2, has anyone hooked it to an msp430 board
[05:38] <Joel_re> cant find anything online
[05:39] <nigelvh> I don't know.
[05:39] <Joel_re> ok
[05:39] <nigelvh> As for shipping. Ask Upu. I live in the US and have ordered things from him and it's been reasonable.
[05:39] <Joel_re> thanks, will do
[05:40] <Upu> morning
[05:40] <Joel_re> I plan to launch in december so just reading up
[05:40] <nigelvh> There he is.
[05:40] <Joel_re> hey Upu :)
[05:40] <Joel_re> how much would it cost to ship the NXT2 module to India?
[05:40] <Upu> Just less than £10 I think
[05:41] <Joel_re> ah ok
[05:41] <Upu> and you have a PM
[05:42] <nigelvh> How's things over there this morning Upu?
[05:43] <Upu> warm and sunny
[05:43] <Upu> its nice
[05:43] <Upu> having a summer for once
[05:45] <Joel_re> I should also be able to use a SDR dongle to recieve data from the 433Mhz modules?
[05:46] <Upu> you can yes but they tend to lack sensitivity sometimes
[05:46] <Joel_re> the one I have works between 25Mhz - 1200Mhz I think
[05:46] <Joel_re> ah hrm, I can add an antenna
[05:46] <Upu> yeah they may still have issues
[05:46] <Joel_re> ok
[05:46] <Upu> if you can afford it a Fun Cube Dongle is a good investmanet
[05:47] <Upu> investment but the SDR will be fine for testing
[05:47] <nigelvh> It's been rather dry and warm over here as well this summer.
[05:48] <Upu> you can get a HAB Amp Joel_re which boosts the performance of the SDR, those are on my site too
[05:48] <Joel_re> so the Fun Cube dongle has better sensitivity?
[05:48] <Upu> I heard nigelvh, it doesn't stay dry for long here hot rain hot rain
[05:48] <Joel_re> will read up on the Amp
[05:48] <Upu> Joel_re way way better
[05:48] <Joel_re> hrm
[05:49] <Upu> http://ava.upuaut.net/store/index.php?route=product/product&path=72_73&product_id=83
[05:55] <Joel_re> thanks
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[06:23] <Joel_re> on the spacenear.us/tracker map, the B-9 balloon - was that a launch done yesterday or is it one of those ones that hover
[06:24] <Joel_re> its altitude seems to remain constant at 111m
[06:24] <x-f> it went silent shortly after launch
[06:24] <x-f> (good morning)
[06:25] <Joel_re> hey, good morning :)
[06:25] <Joel_re> ok, so thats stale data
[06:25] <Joel_re> ?
[06:26] <x-f> yeah
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[06:32] <plantain_> was this one of you? http://www.theregister.co.uk/2013/08/02/mystery_object_falls_from_sky_area_sealed_off_by_military_weather_balloon_say_officials/
[06:33] <plantain_> sounds familiar "eyewitness accounts saying it resembled a balloon and others suggesting that the crashlanded artifact had a structure similar to "styrofoam""
[06:38] <x-f> on the video that "weather monitoring device" looks pretty big
[06:38] <x-f> what's left of it anyway
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[06:53] <plantain_> http://media2.wavy.com//photo/2013/07/30/Suspicious_package_deemed_weather_balloo_1254630000_20130730232632_640_480.JPG
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[06:53] <ibanezmatt13> Good morning
[06:56] <steve_____> hiya
[06:56] <steve_____> did you manage to take a look at that code ibanezmatt13
[06:56] <steve_____> I see someone suggested that you set the clock via reading the GPS time
[06:56] <ibanezmatt13> Just looking at it now
[06:56] <steve_____> I am doing something similar to that in the python bit
[06:56] <ibanezmatt13> Just looking firstly the command to set time in Rapsberry PI :)
[06:57] <steve_____> I didn't do that
[06:57] <steve_____> I parsed the telemetry string and created a filename based on the time coming from the gps
[06:57] <ibanezmatt13> It's a pretty good idea to be honest. I think it should be mentioned on the Wiki
[06:57] <steve_____> rather than setting the time on the pi
[06:57] <ibanezmatt13> So you wrote your data string to a file?
[06:57] <steve_____> the filename was based on time and the message id
[06:58] <steve_____> but most of my code is running on the AVR rather than the pi
[06:59] <ibanezmatt13> I was having problems saving my videos under certain names. I'm using the time they're recorded as a file name but if the Pi resets, the Pi overwrites the videos
[06:59] <steve_____> unfortunately my python script is not as well commented as the C
[06:59] <ibanezmatt13> Adding this feature with the real time from the GPS will help
[06:59] <ibanezmatt13> I'm getting used to C now steve_____.
[06:59] <steve_____> yeah it will sort it out :)
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[07:00] <ibanezmatt13> I've started developing my own PCB to be manufactured using an AVR. Not yet worked on the code though :
[07:01] <steve_____> I think I am using all the same sort of components that you will be
[07:01] <steve_____> Ublox GPS, N2TX radio module and ATMega328p
[07:01] <ibanezmatt13> ATMEGA328 TQFP package?
[07:01] <ibanezmatt13> Or the normal one?
[07:02] <steve_____> but am also using simple temperature sensors LM19 (I think) and simple voltage resistor based divider
[07:02] <steve_____> the DIP (I think normal)
[07:02] <ibanezmatt13> I've been trying to use those to. Do you use Eagle software?
[07:02] <steve_____> I have it but have not bother designing a PCB
[07:03] <steve_____> I used a simple drawing program to detail he circuit
[07:03] <ibanezmatt13> Ah ok. They look so good though when you have your name on it :)
[07:03] <steve_____> I would like to design a PCB as well but just enjoying summer atm
[07:04] <ibanezmatt13> Enjoying summer for me = Getting ready for launch in 3 weeks :)
[07:04] <steve_____> yeah I heard - good luck
[07:04] <ibanezmatt13> Thanks :)
[07:05] <steve_____> I am quiet content to go slow
[07:05] <steve_____> Have you figured out what your mobile tracking system is going to be
[07:06] <steve_____> are you going to carry a yagi and a laptop?
[07:06] <ibanezmatt13> Yes, Yagi and laptop sorted. We're not sure about the backup tracker. We think UpuWork might be making us one of those PAVAs in ball things if you've seen them
[07:08] <ibanezmatt13> Problem is, we've designed our box without allowing space for any mobile tracker
[07:10] <ibanezmatt13> sudo date --set 23 APR 2012 16:01 Is there no command like this on the Pi to set only time?
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[07:11] <ibanezmatt13> Morning
[07:13] <x-f> no, but you can get the date from GPS too
[07:14] <ibanezmatt13> really? That would be helpful. I'll have a look at the Ublox datasheet
[07:16] <x-f> ah, UBX doesn't have it, RMC does, sorry
[07:16] <x-f> unless you poll it for PUBX,04
[07:17] <UpuWork> ping nigelvh
[07:17] <ibanezmatt13> ah ok. I guess I could shove a random date in as a string and just get the time. After all, I only need to make sure the time is set
[07:17] <ibanezmatt13> Morning UpuWork
[07:17] <UpuWork> morning Matt
[07:17] <nigelvh> Yo
[07:17] <nigelvh> pon UpuWork
[07:17] <nigelvh> pong*
[07:17] <UpuWork> just playing with your battery analyser :)
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[07:19] <ibanezmatt13> UpuWork: It hit me earlier that we don't have a backup tracker and we've left no room in the box for one :/
[07:19] <daveake> Hang one below it
[07:20] <ibanezmatt13> That's precisely it daveake, but what to hang?
[07:20] <daveake> A backup tracker
[07:20] <ibanezmatt13> I was thinking about those tiny trackers in a ball
[07:20] <daveake> "those tiny trackers" meaning what?
[07:21] <ibanezmatt13> err, the ones in the...ball :/
[07:21] <ibanezmatt13> PAVA is it or something
[07:21] <ibanezmatt13> not sure
[07:21] <daveake> ah ok
[07:21] <daveake> Well yes that's what I do for valuable payloads, or if I'm testing a new tracker
[07:22] <ibanezmatt13> That's gonna be the best thing to do I think. How would I hang it? I've always wondered how the balloon and things attach to the actual corners of the box
[07:23] <x-f> ..and not mess with the antenna
[07:24] <ibanezmatt13> ah yes, that too ^
[07:24] <x-f> (i've wondered that too)
[07:24] <daveake> http://www.flickr.com/photos/daveake/6824978963/in/set-72157629187109165
[07:24] <daveake> The top ones loop round the bottom of the box
[07:25] <daveake> The bottom ones loop round the top (but under the lid)
[07:25] <ibanezmatt13> Have you cut small grooves into the lid?
[07:25] <daveake> no
[07:25] <daveake> Duct tape covers a thousand sins
[07:26] <ibanezmatt13> Did you glue the lid on or just tape it?
[07:26] <daveake> tape
[07:26] <ibanezmatt13> cool, that's what we're going to do
[07:27] <daveake> This one was neater - the cords went between the pieces of foam as they were glued together http://www.flickr.com/photos/daveake/8441216002/in/set-72157632675040227
[07:28] <daveake> But that time I was going for aesthetics :p http://www.flickr.com/photos/daveake/8441174322/in/set-72157632675040227
[07:28] <ibanezmatt13> ah ok. Our box is simply two small pieces of foam and thats it. So we might as well jut tape it to hell at the launch
[07:29] <daveake> Tape is good, though surprisingly heavy
[07:29] <ibanezmatt13> Duct, gaffer?
[07:29] <daveake> But don't worry about that - just tape it up so it can't come apart
[07:29] <ibanezmatt13> ok, we've got some pretty good stuff anyway
[07:30] <daveake> It's all fine; even the stuff that isn't pink :p
[07:30] <ibanezmatt13> :)
[07:39] <ibanezmatt13> x-f: I might as well poll a PUBX,04 for the date and time as I'll only need it once at the start of the program to set the date and time. Thanks for the tip
[07:43] <x-f> you're welcome, just don't do it right after the start, GPS needs some time to get that data, as you already know
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[07:51] <ibanezmatt13> How about if I just delay the program for a few seconds x-f ?
[07:53] <ibanezmatt13> I think ideally I need to do it in my main loop. Would it be an issue if I had a while loop in my while loop: while sentence_id < 2; set date and time. That way it will do it when it definitely has a fix but not every loop?#
[07:54] <ibanezmatt13> and if statement would be more appropriate
[07:54] <x-f> few seconds might not be enough, i would set the time for the first time sats are more than 3, for example
[07:54] <ibanezmatt13> Good idea. So I would just include the if statement in my main loop?
[07:55] <daveake> Wait till the date isnt zero
[07:55] <ibanezmatt13> what does the Ublox return if it has no date, what format?
[07:56] <daveake> No idea rea d the manual or try it
[07:56] <daveake> NMEA it's zeroes
[07:56] <ibanezmatt13> Yeah, I'm not using NMEA this time. I'll experiment with it. I think checking the satellites should be enough
[07:58] <ibanezmatt13> so in my main loop I could just have an if statement: If the date + time has not been set already, set it. That would be enough because the loop will only be entered if it gets a GPS lock. Then once it's set, it's set :)
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[07:58] <ibanezmatt13> brb, breakfast
[07:58] <ibanezmatt13> morning chrisstubbs
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[07:59] <chrisstubbs> Hi ib
[08:00] <fsphil> hehe
[08:04] Nick change: DrLuke__ -> DrLuke
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[08:17] <Reactive> hi, is anyone around that could chat to me about antenna recommendations for various applications using the funcube+?
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[08:20] <fsphil> what are you using it for?
[08:23] <Reactive> i'm actually new to radio, so I'd like to play around with it by tuning in to various signals and getting the hang of it before I start with a transmitter
[08:23] <Reactive> so I figured the best would be to get some sort of wideband antenna?
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[08:24] <fsphil> depending on your budget, the Diamond X-50 or Watson W-50 are good choices
[08:25] <Reactive> so thats a 2m antenna?
[08:25] <fsphil> 2m/70cm mainly, but good for receiving other frequencies too
[08:25] <fsphil> I've used it for stuff between 80 and 600mhz
[08:26] <Reactive> so it's not just a matter of buying any 70cm antenna?
[08:26] <Reactive> are there quality checks I need to understand about them?
[08:29] <fsphil> an antenna for 70cm only will probably be quite poor on other frequencies
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[08:30] <fsphil> but if you're only doing 70cm then it's perfect
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[08:42] <Reactive> ah
[08:43] <fsphil> but for tracking, and general scanning, the colinears are probably the best bet
[08:43] <fsphil> get them up as high as possible
[08:46] <gonzo_> the 'wideband' antennas are generally bad at all frequencies
[08:48] <gonzo_> 70cm only antennas are actually quite difficult to find. Most designs are dual band 2mtrs/70cm (144/432MHz)
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[08:57] <Reactive> what sort of antenna do I look for when tracking a payload in my car?
[08:57] <Reactive> its obviously got to be quite small, right?
[08:58] <fsphil> you can get little magmount antennas
[08:58] <mfa298> a 2/70 magmount is what most people use
[08:58] <fsphil> ideal for that
[08:58] <Reactive> nice
[09:00] <Reactive> do i need an adaptor connector for a typical 2m/70cm antenna to the funcube SMA?
[09:02] <mfa298> magmounts usully come with some coax and a connector - you might need an adapter to convert that depending what the antenna comes with
[09:02] <mfa298> The home antennas you'll need to get connectors and coax for
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[09:13] <Joel_re> daveake: those are some amazing pictures :)
[09:13] <Joel_re> oops I was scrolled up, but yeah
[09:15] <Joel_re> did it land in the sea?
[09:15] <daveake> CLOUD3 did, and was recovere
[09:15] <daveake> d
[09:16] <Joel_re> how long was it in the sea?
[09:16] <daveake> About 100 minutes IIRC
[09:17] <Joel_re> cool, did water seep in wonder how I insulate between the camera lens and the hole in the box
[09:17] <daveake> It splashed in, but the electronics were high up. They died when it flipped over on the beach
[09:17] <daveake> Camera died
[09:18] <daveake> Basically, if you land in the sea, it will all die except for the SD cards
[09:19] <Joel_re> ok
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[09:35] <ibanezmatt13> This code https://gist.github.com/ibanezmatt13/5844387 will fly on 24th August
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[09:40] <daveake> for i in range(2,8): ... is that right?
[09:40] <daveake> That includes the 1st checksum byte, which is what it's trying to calculate
[09:40] <ibanezmatt13> it seems to work, let me have a look
[09:40] <daveake> yeah I guess it does, just "looks" wrong
[09:41] <ibanezmatt13> it does look wrong, but I figured that most of that part was standard as per the Ublox datasheet
[09:41] <daveake> ok
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[09:43] <ibanezmatt13> I added the part to set date and time from the GPS too
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[09:52] <Willdude123> What's with the funny hex sentences? I thought ubx modes were set with text commands.
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[09:59] <chrisstubbs> Willdude123: for flight mode the command is defined in bytes in the datasheet
[09:59] <chrisstubbs> Sorry hex words
[10:00] <chrisstubbs> No it is a byte. confusing myself here
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[10:30] <HixWork> http://goo.gl/WvyVSI
[10:30] <HixWork> I blame niftylettuce for making me post that. It triggered my memory
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[10:42] <Joel_re_> has anyone ever captured a satellite in a picture
[10:43] <Joel_re_> is it possible to do it if the launch was timed
[10:43] <Joel_re_> accordingly
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[10:46] <gonzo_> it may be possible to catch a reflection/flash from a sattelite. But even the nearest will still be 100's of km away
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[10:48] <gonzo_> there was a guy in greece with a huge telescope who was able to image satellites, but even then they were only a few blury pixels
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[10:53] <craag> Yeah it would be far too small
[10:54] <craag> There are some spots on people's photos that could be satellites, but they could also be dust or anything else!
[10:54] <Joel_re> damn, I missed comments
[10:54] <craag> I'll paste
[10:54] <craag> 10:46 < gonzo_> it may be possible to catch a reflection/flash from a sattelite. But even the nearest will still be 100's of km away
[10:55] <craag> 10:48 < gonzo_> there was a guy in greece with a huge telescope who was able to image satellites, but even then they were only a few blury pixels
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[10:55] <Joel_re> ah ok
[10:55] <Joel_re> thanks craag
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[10:55] <gonzo_> ta
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[10:57] <mfa298> I'd imagine to get something you could tell is a satellite from a payload you'de need a big lense which is going to get heavy (and expensive)
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[10:58] <craag> What alt is LEO?
[10:58] Nick change: HixWork -> Hix_gonetopubonl
[10:58] <Darkside> ~300km
[10:58] <Joel_re> hmm
[10:59] <fsphil> an iridium flare might be visible, if the camera happen to be pointing in the right place at the right moment
[10:59] <fsphil> even that would only be a dot though
[11:02] <craag> It would be cool to try taking photos of space, ie without the earth in view, and see what you can see in the blackness without the atmosphere in the way. Probably have to have the camera above the balloon though or it'll reflect a lot of light in.
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[11:06] <fsphil> or a very long cord
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[11:08] <x-f> a huge lense cap with black, light absorbing inside
[11:09] <Joel_re> camera above the balloon - is that possible?
[11:09] <Darkside> no
[11:11] <gonzo_> the esposure times req I suspedct that the movement of the platform would be a problem
[11:11] <gonzo_> even if you overcame the other issues
[11:23] <Reactive> yeah gonzo_
[11:23] <Reactive> the exposure's the problem
[11:24] <Reactive> you'd need at least 5 seconds of still exposure to get any decent star light in
[11:27] <Reactive> why am I getting "Kit Expired" on my sdrradio console?
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[11:29] <Darkside> Reactive: get the most recent version
[11:29] <Reactive> i thought I did, dammit
[11:29] <Darkside> the betas all expire, so you are forced to get updates
[11:29] <Reactive> V1.5 July 1st, 2012 ?
[11:29] <Reactive> i see theres v2 but thats still beta right?
[11:29] <fsphil> that's annoying
[11:30] <Reactive> very
[11:30] <Darkside> http://www.ham-radio.ch/kits/sdr-radio.com/2.0/SDR-RADIO-Pro_v2.0b1451.exe
[11:30] <Darkside> v2 is fine
[11:30] <Darkside> it works with RTL dongls
[11:30] <mfa298> +1 for V2
[11:30] <Reactive> ah i downloaded that too, wasnt sure if i should use it
[11:30] <Reactive> k
[11:30] <Darkside> if you really want, theres a copy of v1.5 with no expiry
[11:30] <Darkside> if you had a look at sdr-radio.com you'd see that
[11:30] <Reactive> do I need to uninstall 1.5 first?
[11:31] <Darkside> no
[11:31] <Darkside> well
[11:31] <Darkside> i dont think so
[11:31] <Reactive> where do you see the no expiry version?
[11:31] <Darkside> http://www.ham-radio.ch/kits/sdr-radio.com/1.5/SDR-RADIO_v1.5b1425.exe
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[11:31] <Reactive> i only see two 1.5 builds
[11:31] <Reactive> whatever, i'll just go for v2
[11:31] <Darkside> June 22nd, 2013: Build 1425 has all licencing removed and is on active maintenance until at least the end of 2020.
[11:31] <Darkside> yes
[11:31] <Darkside> just get v2
[11:32] <Darkside> it doesnt have all the features of v1.5 yet
[11:32] <Darkside> but its definitely better
[11:32] <Reactive> wow
[11:32] <Reactive> its quite a different experience
[11:32] <Reactive> how do I start the recording? :P
[11:32] <Darkside> erm
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[11:33] <Lunar_LanderU> hello
[11:33] <Reactive> oh nevermind
[11:33] <Darkside> you're looking for a 'data recorder' thing
[11:33] <Darkside> somewhere
[11:33] <Reactive> its better, im just being stupid
[11:33] <Reactive> the play button :/
[11:33] <Lunar_LanderU> wish me luck, about to solder a HIH-5031, will be my first real SMD work :)
[11:33] <Reactive> how do the remote sdr servers work?
[11:34] <Reactive> can someone connect to my host and listen to my devices?
[11:36] <Laurenceb> http://www.openanalytics.eu/blog/using-kickstarter-data-predict-ubuntu-edges-success
[11:36] <Darkside> if you run a server
[11:36] <Darkside> the server is a separate program iirc
[11:37] <Reactive> so it's to listen to a remote device?
[11:37] <Darkside> yes
[11:37] <Darkside> v1.5 had this too
[11:45] <Reactive> how do antenna tuners work? what properties on the antenna do they change?
[11:47] <mfa298> ATU's match the impedance of the antenna to what the transmitter/reciever expects (usually 50 ohm)
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[11:47] <SpeedEvil> Reactive: They change the ...
[11:47] <SpeedEvil> that
[11:48] <mfa298> most of the time it's preferable to have an antenna with an impedance that matches the radio
[11:48] <SpeedEvil> They add inductive and/or capacitive reactance to the antennas inductive and capacitive reactance to make the impedence as sseen by the transmitter a purely resistive load.
[11:49] <SpeedEvil> Or if not quite that - to minimise the mismatch between the transmitter and antenna, to minimise reflections and losses between them.
[11:50] <mfa298> or usually more accurately matching between the radio and the antenna system (antenna and feedline) unless it's a remote ATU at the antenna feedpoint.
[11:51] <Lunar_LanderU> is there an 28-pin AVR with more memory than the atmega328?
[11:52] <Darkside> hrm
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[11:52] <Darkside> i dont think so
[11:53] <Darkside> theres the 44-pin 1281 and 2561
[11:53] <Lunar_LanderU> yea
[11:53] <Lunar_LanderU> thanks
[11:53] <SpeedEvil> Darkside: You can pull off 16 pins though, so it counts.
[11:53] <Lunar_LanderU> my program is 28556 bytes in size
[11:53] <Lunar_LanderU> xD
[11:53] <Darkside> what the hell does it do?
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[11:54] <Lunar_LanderU> read GPS, BMP085, DS18B20, HIH-5030 and geiger counter, then saves to SD and broadcasts over NTX2
[11:55] <Darkside> k
[11:55] <Lunar_LanderU> xD that is so ridiculously big
[11:55] <daveake> SD is probably a lot of that, and probably uses most of the RAM too
[11:56] <Lunar_LanderU> yea
[11:57] <fsphil> probably not even the SD part .. it'll be the FAT file system
[11:57] <Lunar_LanderU> removed the SD parts and library
[11:57] <Lunar_LanderU> 17894 bytes
[11:58] <fsphil> still fairly big
[11:58] <Lunar_LanderU> yea but a significant difference
[12:00] <SpeedEvil> Just writing to the SD as raw blocks is significantly cheaper
[12:00] <daveake> Yep
[12:00] <daveake> Was about to suggest that
[12:01] <SpeedEvil> Blank the SD with dd if=/dev/zero - then on writing - seek 1K, read a bit, and if it's zero then start writing.
[12:01] <SpeedEvil> Otherwise keep skipping
[12:01] <SpeedEvil> Or something like that.
[12:01] <daveake> Hey Lunar_LanderU I think I'm about to receive a lot of money :p
[12:01] <daveake> "Es tut mir leid, um Ihre Privatsphäre auf diese Weise stören. Es gibt eine gewisse verstorbenen Kunden von meiner Bank, die hinter US $ 18 Millionen übrig. Ich suche Ihre Partnerschaft in Empfang dieses Fonds. Wenn Sie interessiert sind, sofort zu antworten für detaillierte Informationen."
[12:02] <SpeedEvil> Woo!
[12:02] <daveake> Hardly need to hit Google Translate to guess what that's about :)
[12:05] <Lunar_LanderU> daveake: ROFL yea
[12:06] <mfa298> I think the version through google translate makes more sense than some of the ones I've seen in english!
[12:07] <Lunar_LanderU> one question though, isn't dd a linux command?
[12:08] <SpeedEvil> yes
[12:09] <SpeedEvil> I was just meaning 'blank the SD by writing all zeros to it'
[12:10] <SpeedEvil> And then you can easily detect where you're up to, without having to constantly reqrite a sequence number - which is bad for the SD life
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[12:13] <Lunar_LanderU> hi chrisstubbs
[12:16] Nick change: Hix_gonetopubonl -> HixWork
[12:19] <chrisstubbs> sup Lunar_LanderU
[12:19] <HixWork> not really sure how this works: Work don't renew contract so put me out of work, yet I'm expected to buy the beers....
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[12:25] <chrisstubbs> Buy them bears instead
[12:25] <chrisstubbs> more expensive but funnier to watch
[12:29] <HixWork> put them in a bear pit
[12:32] <Joel_re> SpeedEvil \0/
[12:33] Action: Joel_re thinks of sending the first minion to the edge of space
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[12:58] <Lunar_LanderU> I'm good chrisstubbs , thanks
[12:58] <Lunar_LanderU> and you=
[12:58] <Lunar_LanderU> ?
[12:59] <chrisstubbs> Not badd thanks
[13:00] <chrisstubbs> Want to get these boards finished and sent off to hackvana
[13:00] <chrisstubbs> was going to wait for my TI bits to come before sending them off though, still not sure if im brave enough to solder QFN
[13:00] <Darkside> aww its easy
[13:00] <Darkside> you can do it by hand, without reflow, if you put a large via under the chip
[13:01] <Darkside> that way you can solder the ground pad from the oether side of the pcb
[13:03] <costyn> mfa298: the text was probably Google translated from English to German to begin with, hence making the translation back more likely to make sense
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[13:09] <LazyLeopard> I remember playing the "translate text through two other languages and back to original" game for laughs now an again....
[13:10] <SpeedEvil> Not strictly on-topic - but it has latex balloons and electricity. http://www.youtube.com/watch?v=bcLDx_oiSMY
[13:15] <Laurenceb> anyone know how i can resize an eps file in linux?
[13:15] <Laurenceb> need to rescale it
[13:15] <Laurenceb> as dvipdfm is throwing errors atm
[13:16] <Laurenceb> as its a silly size, and the rescaling overflows in dvipdfm
[13:22] <costyn> LazyLeopard: this is what you're referring to I think: http://www.translationparty.com/
[13:23] <LazyLeopard> Ah. Someone automated it. No, we used altavista's babelfish, I think...
[13:24] <costyn> LazyLeopard: this is only to japanese and back, but man it gets weird quickly
[13:24] <LazyLeopard> Heh ;)
[13:28] <LazyLeopard> Song lyrics are often particularly prone to weird changing...
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[13:58] <Willdude123> Hi
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[14:04] <ibanezmatt13> Afternoon :)
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[14:07] <Willdude123> ibanezmatt13: How's the pcb going?
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[14:08] <ibanezmatt13> Nowhere just yet Willdude123. I'm gonna learn how to use the software properly first :)
[14:09] <Willdude123> Ah cool
[14:09] <ibanezmatt13> Just waiting for a good decode on my tracker. A thunderstorm has just engulfed our house
[14:10] <Willdude123> Surely you'll still decode it at close rangew?
[14:10] <fsphil> < envy
[14:10] <Willdude123> Argh irssi has messed up due to 1-20k internet.
[14:10] <fsphil> a thundercloud would stop GPS working
[14:11] <Willdude123> I might not make it back on.
[14:12] <SpeedEvil> I have a 100mW tracker that fails at 5m.
[14:12] <SpeedEvil> (though it is an electricity power tracker)
[14:12] <ibanezmatt13> Yeah, hopefully it'll clear over
[14:13] <Willdude123> Well I'm in Turkey, it's about 30C outside and the sky is completely clear.
[14:13] <fsphil> not cold turkey then
[14:15] <Willdude123> Haha
[14:16] <Willdude123> Oop irssi has messed up again.
[14:17] <Willdude123> So
[14:17] <Willdude123> I just rea
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[14:18] <Willdude123> lized over summer I'm gonna have to learn calculus AND build a tracker.
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[14:20] Action: mfa298 wonders why you'd need to learn calculus over the summer
[14:20] <SpeedEvil> Seems like a good plan.
[14:20] <Willdude123> 8.01x
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[14:23] <Willdude123> MITx/edX
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[14:24] <SP9UOB-Tom> afternoon all !
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[14:24] <fsphil> howdy tom
[14:25] <Willdude123> Might be a bit difficult to do both.
[14:27] <mfa298> i suspect finding a good book to learn that sort of stuff from could be hard as well (and expensive)
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[14:35] <ibanezmatt13> Le tracker is running good
[14:37] <Willdude123> mfa298 I don't suppose you know any?
[14:37] <Willdude123> I thought about apostol's calculus but, meh.
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[14:38] <mfa298> The key is finding something that makes sense to you and is written in a way that's good for you.
[14:38] <ibanezmatt13> Why do you need to learn calculus so soon Willdude123? Just curious?
[14:38] <ibanezmatt13> ignore last '?' :)
[14:39] <mfa298> I don't think I did any calculus until A Level Maths, and then again at Uni
[14:40] <ibanezmatt13> Technically, you are only taught calculus from A level and beyond. After passing my Maths early I took a further GCSE maths course which covered it so I know it to AS level
[14:40] <ibanezmatt13> But not further than that yet
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[14:40] <mfa298> And when I did bits of maths as part of my Uni degree I ended up getting an alternative book as I struggled with how the recommended text book was written (each book costing around £30)
[14:41] <ibanezmatt13> The text books we were provided might as well have been written in arabic
[14:42] <fsphil> probably originally where
[14:42] <ibanezmatt13> lol, yeah probably
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[14:44] <cyclops> hi!
[14:44] <chrisstubbs> afternoon
[14:45] <cyclops> one thing
[14:45] <cyclops> Im making the payload antenna
[14:45] <Willdude123> ibanezmatt13: I'm doing 8.01x in autumn and I might as well have a solid calculus knowledge since it's a co requisite. I'll also look at the 18.01 videos
[14:45] <cyclops> and for radials using the solid core telephone cable
[14:45] <cyclops> any problem with it¿
[14:45] <ibanezmatt13> cool
[14:46] <chrisstubbs> cyclops, telephone or network cable?
[14:46] <chrisstubbs> I have used telephone cable before for a whole antenna and it was terrible
[14:46] <cyclops> telephone i believe
[14:46] <cyclops> really?
[14:46] <chrisstubbs> solid copper core network cable seems to work far better
[14:46] <fsphil> don't use cat5 network wire
[14:47] <fsphil> it's horrible
[14:47] <cyclops> well its solid
[14:47] <cyclops> te guy on the shop tod me was used for telephone
[14:47] <fsphil> very fragile
[14:47] <cyclops> But had no tepehone connector
[14:47] <cyclops> Its solid copper
[14:47] <chrisstubbs> if its copper it may well be okay
[14:47] <cyclops> Not twisted
[14:47] <chrisstubbs> but I would be reluctant to use telephone cable
[14:48] <fsphil> might be alright for radials
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[14:48] <fsphil> but don't use it for the main element
[14:48] <chrisstubbs> True
[14:48] <cyclops> main element
[14:48] <cyclops> is the RG 174
[14:49] <cyclops> Pigtail with sma connector
[14:49] <chrisstubbs> Explorer has done one, restart time!
[14:49] <daveake> Just follow the guide http://ukhas.org.uk/guides:payloadantenna
[14:49] <cyclops> i did
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[14:52] <cyclops> in the guide the radial wire seems not to be copperis it?
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[14:53] <ibanezmatt13> On average how much quicker is decent than accent?
[14:54] <chrisstubbs> ibanezmatt13, depends on the drag of your chute
[14:54] <chrisstubbs> and free lift
[14:54] <chrisstubbs> but 5m/s up and 5m/s down is reasonable
[14:54] <chrisstubbs> for targets
[14:54] <ibanezmatt13> ah, not sure about any of those
[14:54] <chrisstubbs> you will get the ascent rate from the habhub calculator
[14:54] <chrisstubbs> I think steve has a parachute calc on his site
[14:55] <daveake> Yes typical ascent rate 5m/s typical landing speed 5m/s. Obviously it'll be a lot fast coming down before it gets into thicker atmosphere
[14:55] <ibanezmatt13> so decent is usually quicker than accent?
[14:55] <daveake> I just said that
[14:55] <ibanezmatt13> Ah you did :/ sorry
[14:55] <fsphil> decent accent?
[14:56] <chrisstubbs> on average for the whole flight, yes, but when it hits the ground (where the air is most dense) you want about 5m/s to avoid smashing things
[14:56] <daveake> So for ascent time just divide the burst alt by the ascent rate
[14:56] <daveake> For descent time, maybe 40 minutes (I can't do the maths :p )
[14:56] <daveake> ^^ probably could but CBA
[14:57] <ibanezmatt13> haha, fair enough :)
[14:59] <chrisstubbs> cyclops, on the guide stratodeans radials are made from RG58 sheath
[14:59] <Willdude123> So yesh I need to buy some good calculus books.
[14:59] <Willdude123> What about Calculus for Dummies?
[14:59] <chrisstubbs> upus just appears to be bog standard solid core electronics wire
[14:59] <daveake> Yes that's what I use too
[14:59] <cyclops> so chrisstubbs if its a solid core (copper) should work right?
[15:00] <daveake> It'll work whatever just don't use anything brittle
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[15:00] <ibanezmatt13> daveake: does the Pi Cam do sound? [I guess not]
[15:00] <daveake> no
[15:00] <ibanezmatt13> cool
[15:00] <cyclops> ok dave, thanks
[15:00] <ibanezmatt13> well, not cool
[15:01] <daveake> Sound isn't really very interesting from a HAB
[15:02] <ibanezmatt13> good point
[15:04] <cyclops> unless you want to linten to the wind
[15:04] <ibanezmatt13> would have been a nice effect, but who cares :)
[15:04] <daveake> and passing aircraft :p
[15:05] <ibanezmatt13> ever come into contact with a plane daveake ?
[15:05] <daveake> I've been on many
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[15:05] <ibanezmatt13> Yes, as have I. Good fun
[15:06] <daveake> That wears off after the first couple of hundred flights
[15:06] <ibanezmatt13> Suppose so
[15:07] <ibanezmatt13> daveake: What is the name of Steve's site near Cambridge?
[15:07] <eroomde> elsworth
[15:07] <costyn> passing aircraft sound really cool
[15:07] <ibanezmatt13> thanks eroomde
[15:08] <daveake> ibanezmatt13 As you just noticed, it's not only me that can answer questions :-) Spread the love ...
[15:08] <costyn> http://youtu.be/AKNbJCVRXhA?t=5m10s passing plane within a couple kilometers
[15:08] <ibanezmatt13> yes, I will :)
[15:08] <ibanezmatt13> wow, costyn that's cool
[15:09] <Babs__> Hey yooouuuu guyyyys http://imgur.com/EKrmDjj
[15:09] <costyn> at around 6 minutes there's nother
[15:09] <daveake> http://www.flickr.com/photos/daveake/7038083291/in/set-72157629717191599
[15:10] <chrisstubbs> daveake, matt asked me a good question the other day but I couldnt pick a number out of my head. What kind of distance do you get to the horizon at 35ish km? I remember seeing some of your photos with the sea in the background
[15:10] <costyn> ibanezmatt13: that was at about 10km altitude, it was (accidentally) passing through a airliner corridor between eastern europe and england
[15:10] <fsphil> 600km ish, but the haze limits visual distance quite a bit
[15:10] <eroomde> WORK IT OUT
[15:10] <ibanezmatt13> nice costyn
[15:10] <eroomde> may breaks from IRC have had a great effect
[15:10] <eroomde> i no longer get frustrated
[15:11] <costyn> eroomde: haha
[15:11] <daveake> Well, I have a photo that reaches as far as Lands End from Swindon, at 39km
[15:11] <daveake> lol
[15:11] <fsphil> I see that eroomde :)
[15:11] <Laurenceb> http://www.amazon.com/gp/cdp/member-reviews/A2IWRKMMIH1Y6R/ref=cm_cr_auth/104-0238679-1953525?ie=UTF8&sort_by=MostRecentReview
[15:11] <Babs__> Christubbs - I got to see France from Hereford
[15:11] <chrisstubbs> Cool
[15:11] <Willdude123> eroomde do you know any good books on calculus?
[15:11] <eroomde> see yesterday's convo
[15:11] <costyn> lol
[15:12] <daveake> I thought that was a monologue eroomde but then I had the other party /ignored
[15:13] <daveake> Thought you'd gone a bit nuts :p
[15:13] <eroomde> it does happen
[15:13] <Babs__> chrisstubbs: http://www.flickr.com/x/t/0091009/photos/91049302@N00/7279503558/
[15:13] <eroomde> things are busy
[15:13] <Babs__> Morning eroomde
[15:13] <eroomde> not here
[15:13] <chrisstubbs> Wow nice Babs__
[15:14] <Willdude123> eroomde Ah the pdf one hix mentioned?
[15:14] <Babs__> It was the only clear day in 2012
[15:14] <eroomde> that series of blog posts willdude
[15:14] <eroomde> i don't know any good introductory textbooks
[15:14] <eroomde> i only really know good textbooks once you know basical calculus
[15:14] <Willdude123> Yes reading them but it'd be nice to have a textbook.
[15:14] <daveake> Lands End from Swindon - http://www.daveakerman.com/wp-content/uploads/2013/05/snap314_ifl-1024x768.jpg
[15:15] <Willdude123> I'll read through the series first.
[15:15] <Babs__> Willdude - Principia Mathematica - I forget who wrote it but he knew his stuff.
[15:15] <Willdude123> Haha
[15:15] <Babs__> Arf
[15:15] <chrisstubbs> yes daveake thats the one i was thinking of :)
[15:15] <Willdude123> I think his name was steve.
[15:15] <Babs__> I love that photo
[15:16] <Babs__> The clouds hanging out over the land but not over the sea are superb
[15:16] <daveake> That was with the Pi cam. A mere 5M pixels
[15:16] <eroomde> http://www.gutenberg.org/ebooks/33283
[15:16] <daveake> I don't think pixels really matter much up there
[15:17] <Babs__> I agree daveake
[15:17] <fsphil> not on most days anyway
[15:17] <daveake> Clouds being fluffy and the atmosphere misty
[15:17] <Babs__> But there's nothing like spending a couple of g's to send an SLR up there to nail the theory
[15:17] <daveake> lol
[15:17] <Babs__> :-(
[15:18] <Babs__> But on the one day that it is Clear McClear up there, my canon 550d will rule the world
[15:18] <fsphil> winter is probably better
[15:19] <daveake> Oh, and that photo would have been a lot better if it had used the full field-of-view. At that time the Pi Cam software had a bug where it cropped then rescaled
[15:19] <Babs__> Statistically speaking , if I launch every month that could actually happen this side of 2050
[15:19] <Babs__> I do think a wide angle up there would be mega though
[15:19] <fsphil> make better use of those pixels
[15:19] <Babs__> Perhaps for EclipseCamStabilotron
[15:19] <daveake> Well you can stitch images
[15:20] <daveake> I bought a Canon A810 with 28mm equiv lens, but can't get CHDK to boot on it
[15:20] <Babs__> Is it supported?
[15:20] <daveake> Yes has 3 different versions of firmware
[15:20] <daveake> Tried them all
[15:20] <Babs__> Hmmm. What size memory card?
[15:21] <daveake> Well I tried 4 and 16GB
[15:21] <daveake> Not both with all firmware versions
[15:21] <Babs__> (I think) it struggles with card sizes over 5 GbK
[15:21] <daveake> Well I use the A490/5 and A480 with 8GB no troubles
[15:21] <Babs__> Sorry, 5gb, not 5 gourmet burger kitchens
[15:22] <daveake> mmmburgers
[15:22] <Babs__> I just remember it having difficulty over 5 GbK
[15:22] <daveake> Anyway I gave it to MrsDave to replace her old IXUS
[15:22] <Babs__> F@&£ 5 gb
[15:22] <daveake> And I don't think I can have it back now :p
[15:22] <Willdude123> Mrs Dave?
[15:22] <Babs__> I had magic lantern working on a 128 g card
[15:23] <Willdude123> Is your wife called dave dave?
[15:23] <Babs__> SLR wins
[15:23] <Babs__> I wonder whether there is a compact you can run magic lantern on
[15:23] <daveake> I bought some 16GB CF cards for my old EOS cameras for hols last year. Then discovered during the first day that they don't work ...
[15:24] <daveake> .... the camera gives up after 30 shots or something
[15:24] <daveake> Rendering the images unreadable
[15:24] <daveake> Managed to get most back with a recovery program
[15:24] <Willdude123> daveake is your husband/wife called dave.
[15:24] <daveake> So if anyone wants any 16GB CF cards .... :/
[15:25] <Babs__> Apparently it can't
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[15:26] <Willdude123> eroomde I understand it till it talks about e
[15:29] <Babs__> On another note I snapped this coming into San Francisco airport
[15:29] <Babs__> http://imgur.com/qhXulbK
[15:29] <Babs__> "Thanks for safely landing at San Francisco, if you look to the right here is one that didn't quite make it"
[15:30] <Babs__> Must do wonders for the nervous flyers
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[15:32] <HixWork> anyone know where Putty stores its settings?
[15:33] <Willdude123> http://betterexplained.com/articles/an-intuitive-introduction-to-limits/ I lost it as soon asitr talked about contiuous growth.
[15:34] <mfa298> HixWork: it's in the registry somewhere
[15:34] <mfa298> gimme a min and I'll look at my saved putty settings
[15:34] <HixWork> cheers mfa298
[15:35] <eroomde> Willdude123, 1089 and all that will teach you lots of good maths
[15:35] <eroomde> including/culminating with e and euler's formula
[15:35] <mfa298> HixWork: try HKEY_CURRENT_USER\Software\SimonTatham\PuTTY
[15:37] <HixWork> excellent cheers mfa298
[15:37] <eroomde> Willdude123, get that
[15:37] <HixWork> leaving worklplace so i want to try and keep things stored
[15:37] <eroomde> i think you'd enjoy it
[15:37] <Willdude123> k
[15:37] <HixWork> not sure if I'm going to be able to IRC at new job
[15:37] <eroomde> it will fill in all the gaps, and more importantly explain what maths is and isn't
[15:38] <eroomde> school maths is just arithmatic pretty much to A-level, which is very boring
[15:38] <mfa298> HixWork: there's always a way to IRC (even if you have to rdp/ssh via port 443) or tunnel over dns.
[15:38] <eroomde> but proper maths is very beautiful
[15:39] <Willdude123> I fail at so called maths but I'm OK at proper maths
[15:39] <eroomde> proper maths is the important bit
[15:39] <eroomde> you have a calculator for the boring stuff that doesn't involve actual thinking
[15:39] <HixWork> here's hoping mfa298 :)
[15:40] <Willdude123> Yeah
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[15:41] <Willdude123> We learn maybe one useful concept and then do 20 problems on it which are the sane but with different values most of the timw.
[15:42] <mfa298> doing the problems is a useful part of learning.
[15:42] <mfa298> just because you understand something when you've just been told it doesn't mean you'll remember how to do it next week
[15:42] <Willdude123> But doing too many long winded ones of things you already understand.
[15:43] <mfa298> but if you don't do the problems will you still remember/ understand the following week/month/year when you actually need it.
[15:44] <Willdude123> I won't remember it anyway
[15:44] <Willdude123> All I remember is doing long winded problems.
[15:44] <eroomde> you're right, a couple of really well-designed exercised is better than plenty of boring ones
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[15:46] <SP9UOB-Tom> the film cauces http://www.youtube.com/watch?v=Ejd2rsXoQSI
[15:46] <SP9UOB-Tom> creeps
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[16:04] <Laurenceb> https://www.youtube.com/watch?v=kPRA0W1kECg
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[16:17] <ibanezmatt13> This looks decent: http://www.cusf.co.uk/wordpress/wp-content/uploads/IPGSJ0H1.jpg
[16:18] <Laurenceb> dat square routing
[16:19] <ibanezmatt13> jees I wish I could make a PCB :)
[16:19] <Ugi> ibanezmatt13: why can't you?
[16:20] <ibanezmatt13> I'm trying to use Eagle, I can do schematics but I fail miserably on the board view. Upu's gonna give me a little help
[16:20] <Ugi> D'you want a look at the Ardu' board I put together - I'm not expert but it works & might be of interest.
[16:21] <ibanezmatt13> yeah sure, anything helps :)
[16:21] <ibanezmatt13> thanks
[16:21] <ibanezmatt13> Do you have the .sch and .brd files?
[16:22] <Ugi> ugilabs.co.uk/Scrap/HAB.zip
[16:22] <Ugi> om tjere
[16:22] <Ugi> in there
[16:22] <ibanezmatt13> thank you
[16:23] <Ugi> Idea is that the GPS is UPU's small breakout with chip antenna
[16:23] <ibanezmatt13> ah right ok, I'll take a look now
[16:23] <Ugi> it communicates either to the UART or by i2c depending upon the jumpers you set
[16:24] <ibanezmatt13> never heard of a mega8
[16:24] <Ugi> mega 8 is and earlier '328
[16:24] <Ugi> same pinout
[16:25] <ibanezmatt13> ah ok
[16:25] <Ugi> Eagle does not have a '328 footprint in std libraries
[16:25] <Ugi> In practice, while you could use an ATMega8, you need the SRAM of an ATMega 328
[16:26] <Ugi> it's all though-hole 'cos I'm a coward!
[16:26] <ibanezmatt13> lol, looks good Ugi
[16:27] <Ugi> the Honeywell sensor is probably not of interest to anyone else but I had one and it measures absolute pressure supposedly down to 0 Bar
[16:27] <Ugi> so may as well send it up!
[16:28] <ibanezmatt13> Why not :)
[16:28] <ibanezmatt13> The board view like all boards looks really good but horrendously complicated.
[16:28] <Ugi> There are some tricks that help me.
[16:29] <Ugi> firstly, take control of what is displayed.
[16:29] <Ugi> you don't generally want front and back annotations at the same time, for example
[16:29] <ibanezmatt13> i see
[16:29] <Ugi> if you are working on the silkscreen, turn of the tracks display
[16:30] <Ugi> off
[16:30] <Ugi> also, the autorouter is rubbish with the default settings
[16:30] <Ugi> but with a suitable set of optimisations it's very good
[16:30] <ibanezmatt13> I'm quite happy routing manually, I just need to know how :) Will pick it up soon
[16:31] <ibanezmatt13> Even Jeremy Blum's tutorial videos were not of any use
[16:31] <Ugi> it's not terribly hard - you should see "air wires" joining the relevant pins
[16:32] <Ugi> start at one pin and click where you want to go until you get to the next pin
[16:32] <ibanezmatt13> Yeah, I think I got it at one point but then I gave up. The layers confused me and it all went rapidly downhill
[16:32] <ibanezmatt13> I got some tracks done :/
[16:32] <Ugi> great.
[16:33] <Ugi> once you have a few down, use the "ratsnest" button to simplify the air wires
[16:33] <ibanezmatt13> Vias and making polygons were the worst part
[16:35] <Ugi> for vias, just select the top or bottom layer and eagle will put the via in for you
[16:36] <Ugi> for polygons, you can set and exclusion distance so they keep away from everything else. you don't need to do it manually
[16:36] <ibanezmatt13> that sounds a little tricky
[16:36] <Ugi> no. dead easy
[16:36] <Ugi> right click on the polygon that makes the ground plane at the RHS of the board I linked to
[16:37] <Ugi> you will see a distance set for "exclusion" or "keep-away" or something. Play with that
[16:37] <Ugi> click ratsnest to refresh the polygon
[16:38] <ibanezmatt13> Ok, I'll have a look into it and Ill try it again. Thanks :)
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[16:39] <Ugi> it's not the most accessable piece of software ever but you can get to a useful level of competence with a little effort
[16:39] <ibanezmatt13> yeah.It does look like a good program to use. I'll stick to it
[16:40] Nick change: MichaelC2 -> MichaelC
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[16:57] <Lunar_Lander> hello
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[17:33] <cyclops> guys im using this cable as radials
[17:33] <cyclops> http://img819.imageshack.us/img819/9083/oyol.jpg
[17:33] <cyclops> No problem right?
[17:35] <fsphil> massive thunderstorm just of the coast of the netherlands
[17:36] <fsphil> we so gotta launch a balloon into one of these
[17:36] Action: bertrik looks
[17:37] <bertrik> animated lightning plot http://www.buienradar.nl/bliksem-1-uur
[17:37] <fsphil> like a swarm of angry yellow crosses
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[17:39] <ibanezmatt13> Evening
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[17:42] <Steve_2e0vet> is there any tracking software for ipad
[17:42] <SP9UOB-Tom> Radim OM2AMR is launching tomorrow
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[17:45] <Herman-PB0AHX> hello to all
[17:45] <Steve_2e0vet> where is it being launched from
[17:46] <Lunar_Lander> slovakia
[17:46] <Lunar_Lander> SP9UOB-Tom, hello
[17:46] <Lunar_Lander> we won't fly from Berlin, don't know if I said that already
[17:47] <Steve_2e0vet> Frommdoes anyone track using an ip
[17:47] <Steve_2e0vet> this keyboard sucks
[17:47] <Steve_2e0vet> does anyone track using an ipad
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[17:49] <fsphil> laptops are just too handy. can't do without a real keyboard :)
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[17:50] <jcoxon> evening all
[17:50] <fsphil> evenin'
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[17:54] <jcoxon> hows tricks fsphil ?
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[17:56] <fsphil> not too bad here jcoxon. dumping stuff, trying to clear some space in the room. don't need an old PC do you? :)
[17:56] <jcoxon> oh gosh no
[17:56] <jcoxon> i'm got a computer sitting in my car as i'm not allowed to bring it indoors
[17:57] <fsphil> uh-oh!
[17:57] <jcoxon> its a 386 with 8mb of ram
[17:57] <fsphil> ah well that's different
[17:58] <jcoxon> i built a linux distro on it
[17:58] <mfa298> not so much a PC as an ancient relic that should have pride of place somewhere prominent.
[17:58] <jcoxon> yes
[17:58] <jcoxon> one day i'll sneak it into the house
[17:58] <fsphil> I guess. I'm not used to think of PCs as being classic things. I've got my Amigas for that :)
[17:59] <mfa298> I skipped over the 386, I had earlier machines and then a collection of 486s
[18:00] <jcoxon> fsphil, finally got those optoisolators so can eventually get round to rebuild my iss rig
[18:00] <mfa298> I wonder if you could hide a pi inside the case, put rasbmc on it and then have it as a htpc under the TV.
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[18:00] <fsphil> hope it works jcoxon. just hoping it's not picking up the RF somewhere else
[18:01] <jcoxon> yeah
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[18:01] <jcoxon> that said i've still got my helicopter project
[18:01] <fsphil> still watching the price on that
[18:02] <jcoxon> got the parity check working
[18:02] <jcoxon> was playing around with the throttle
[18:03] <fsphil> are you able to do more things than the normal control now?
[18:03] <jcoxon> wasn't really making sense
[18:03] <jcoxon> i expected it to be 4bit
[18:03] <jcoxon> but didn't seem to work
[18:03] <jcoxon> needs more investigation
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[18:15] <cyclops> hi
[18:16] <cyclops> http://img819.imageshack.us/img819/9083/oyol.jpg what do you think as radials?
[18:17] <Lunar_Lander> <Lunar_Lander> I got a question about the output filter for the MC34063A in stepup mode, it says in the datasheet that you can use an LC circuit with 1 uH inductance and 100 uF capacitance; does a 10 uH inductor also work?
[18:18] <Lunar_Lander> yeah just asked that at sparkfun but didn't get an answer
[18:18] <Lunar_Lander> so I decided to try here as well
[18:22] <cyclops> is the cable good for radials?
[18:25] <fsphil> you won't know until you try it. do a range test if you can
[18:25] <daveake> Nah it's the wrong colour
[18:25] <fsphil> photons move faster in it if it has strips
[18:27] <cyclops> and range test how can be done fsphil?
[18:27] <fsphil> find a nice open space, see how far away you can decode it
[18:28] <cyclops> how far should i be able to decode it to be sure that it will work?
[18:30] <fsphil> as far as possible
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[18:32] <cyclops> allright
[18:32] <cyclops> ill try it then
[18:32] <fsphil> best if you have a big hill nearby
[18:33] <fsphil> I'm able to receive my payload about 10km away up the hill
[18:33] <fsphil> though it's a little bit weaker than usual as there's a building in the way
[18:33] <cyclops> so the payload is on top of the hill?
[18:33] <fsphil> I was
[18:33] <fsphil> the payload was at home
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[18:34] <cyclops> allright
[18:34] <cyclops> I think I can do that
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[18:37] <ibanezmatt13> ping UpuWork
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[18:58] <ibanezmatt13> Upu could you send me a link to the Pi and Chips schematic again, I thought I'd bookmarked it but turns out I haven't :/
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[19:02] <daveake> ibanezmatt13 What is it you're after in particular?
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[19:03] <ibanezmatt13> Just the schematic so I can look at a few things. I'm gonna try to replicate it to help me learn Eagle :)
[19:03] <daveake> ok
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[19:18] <Lunar_Lander> I want to show something to you
[19:18] <Lunar_Lander> of which I am quite fond
[19:19] <Upu> https://www.dropbox.com/s/6h91vuqswhxubwx/piandchipsv1.zip
[19:19] <Upu> when he comes back
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[19:19] <Lunar_Lander> here http://s.gullipics.com/image/y/7/u/5yvc00-ktei6x-zuqt/IMG0663.jpeg
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[19:21] <Lunar_Lander> hm
[19:21] <Lunar_Lander> why does nobody respond to me?
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[19:22] <Upu> I think with all the spliting going on Lunar_Lander your posts are getting lost
[19:22] <Upu> what is it ?
[19:22] <Lunar_Lander> ah
[19:22] <Lunar_Lander> I mounted a HIH-5031 (3.3V, filter) on a sparkfun HIH-4030 breakout
[19:22] <ibanezmatt13> Hi Upu.
[19:22] <Lunar_Lander> my first real SMD work
[19:23] <Upu> https://www.dropbox.com/s/6h91vuqswhxubwx/piandchipsv1.zip
[19:23] <ibanezmatt13> thanks
[19:23] <Upu> its just a break out ?
[19:23] <Lunar_Lander> well the board has been a breakout
[19:23] <Lunar_Lander> and I soldered the new sensor onto it
[19:24] <Upu> ah very good
[19:24] <Upu> next step your own boards :)
[19:24] <Lunar_Lander> yea :)
[19:25] <Lunar_Lander> I had that other question earlier
[19:25] <Lunar_Lander> the stepup IC recommends a LC filter at the end
[19:25] <Lunar_Lander> and they say 1 uH inductor and 100 uF cap
[19:25] <Lunar_Lander> does it also work with a 10 uH inductor?
[19:25] <Lunar_Lander> I suppose that the cap then would need to be only 10 uF or so
[19:26] <nigelvh> LC filters are tuned. There are a number of calculators online, try putting the recommended values in to see what the frequency cutoff is.
[19:26] <nigelvh> Then try different values.
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[19:26] <Lunar_Lander> ok, thanks
[19:26] <Lunar_Lander> :)
[19:26] <ibanezmatt13> Upu, I've been trying with Eagle again, not much improvment. I tried to make a simple PCB which used a potentiometer to dim an LED without even using a microcontroller and still no luck :/
[19:26] <Upu> when I get a mo
[19:26] <Upu> I'll run through it with you
[19:27] <ibanezmatt13> That will be very helpful
[19:29] <cde> MAYBE you should read doc/README.arm-unaligned-accesses
[19:29] <cde> kthxbye
[19:29] Action: cde hates those error messages
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[19:42] <cm13g09> ok, this is non-HAB, but surely I'm going insane if I can't make a 555 timer work?
[19:42] <cm13g09> (especially if I can get an STM32F0 working!)
[19:42] <SpeedEvil> cm13g09: I'd say gone.
[19:43] <cm13g09> SpeedEvil: what, I've managed to pop it somehow?
[19:43] <cm13g09> if I have, that's impressive....
[19:43] <SpeedEvil> No, you've gone insane.
[19:43] <cm13g09> lol
[19:43] <cm13g09> ok
[19:43] <SpeedEvil> Is it red hot?
[19:43] <cm13g09> nope
[19:43] <SpeedEvil> And have you plugged it in backwards?
[19:43] <cm13g09> nope
[19:43] <cm13g09> well
[19:43] <cm13g09> OH....
[19:43] <cm13g09> hang on :P
[19:44] <cm13g09> I may have missed out a fundamental connection :P
[19:44] <SpeedEvil> :)
[19:46] <mattbrejza> hmm 555 timers are more expensive than small micros...
[19:46] Nick change: SAIDias -> W0OTM
[19:47] <mattbrejza> well some are
[19:47] <cm13g09> mattbrejza: I know
[19:47] <cm13g09> it's worrying
[19:47] <mattbrejza> didnt order by price orginally, 16p for a 555
[19:47] <cm13g09> yeah
[19:47] <SpeedEvil> I kind-of-wish someone would do a 8 pin DIP with a +-200mA driver, good to 12V supply, with a small arm in there.
[19:48] <SpeedEvil> Sort of like a 555 equivalent.
[19:48] <mattbrejza> 39p cheapest micro
[19:48] <cm13g09> SpeedEvil: even with a correct connection to pin 1, seemingly no dice :(
[19:48] <mattbrejza> although farnells sort by price is a bit broken
[19:49] <cm13g09> mattbrejza: when isn't it?
[19:49] <SpeedEvil> Remember to select 'in stock'
[19:49] <SpeedEvil> Sorting can be fun.
[19:49] <SpeedEvil> revealing 800000A transistors in TO92
[19:50] <mattbrejza> it has placed a 40p one below a 60p one, both in stock
[19:50] <SpeedEvil> What's the 40p? pic10f?
[19:50] <mattbrejza> and 'in stock' doesnt work either...
[19:51] <mattbrejza> yea
[19:52] <ibanezmatt13> anyone know how to add text to the board view in Eagle? Like putting your name on it for when it's printed
[19:52] <mattbrejza> there is a text button at the side?
[19:52] <mattbrejza> remember to change layer to tsilk
[19:52] <mattbrejza> or tplace or something like that
[19:52] <ibanezmatt13> thank you mattbrejza
[19:53] <mattbrejza> (or bsilk, i dont think it flips automatically between them when you middle click)
[19:53] <mattbrejza> middle click being flip if you hadnt already noticed
[19:53] <Lunar_Lander> can you run three SoftSerial connections on an atmega328P?
[19:53] <mattbrejza> flip/but on bottom layer if routing
[19:53] <mattbrejza> *put
[19:53] <Lunar_Lander> would have one Geiger, one photodiode, one OpenLog
[19:53] <Lunar_Lander> GPS is on UART
[19:53] <mattbrejza> are these premade units that output serial?
[19:55] <mattbrejza> although providing you dont try using softserial on more than one pin at the same time i dont see any issue (never actually used it, hopefully you can just change the pins it uses when you want to switch between)
[19:55] <Lunar_Lander> OpenLog records incoming data via serial
[19:55] <Lunar_Lander> so that would send to it
[19:55] <Lunar_Lander> the geiger counter has a serial output and I got code which would parse the counts per minute information from it
[19:56] <Lunar_Lander> the PIN Photodiode system has to be made first
[19:56] <mattbrejza> the GM module outputs serial as it feels like it? or do you have to ask it?
[19:56] <mattbrejza> although if openlog is tx only, and GM rx only then that should be fine
[19:56] <Lunar_Lander> yeah
[19:56] <Lunar_Lander> the GM outputs one string per second
[19:57] <mattbrejza> not sure if SS is full or half duplex though
[19:57] <mattbrejza> just connect the photodiode to the AVR ADC?
[19:58] <Lunar_Lander> well that is not a normal photodiode, it got pulse detection and so on, like here http://www.elektronik-labor.de/Projekte/Alpha.html
[19:59] <mattbrejza> oh a radiation photodiode
[19:59] <Lunar_Lander> yea
[19:59] <mattbrejza> (on msp430 timers) you can connect the clock of the timer to an external source (the photodiode) such that the timer counts pulses
[20:00] <cm13g09> hmm
[20:01] <Lunar_Lander> ah
[20:01] <cm13g09> I appear to have a slightly borked 555
[20:01] <Lunar_Lander> I thought about that circuit on the website
[20:01] <Lunar_Lander> i.e. the first one
[20:02] <Lunar_Lander> and then the comparator behind it
[20:02] <cm13g09> It appears to not be doing monostable things...
[20:02] <Lunar_Lander> and then the ATTiny
[20:02] <mattbrejza> if you have a spare timer you might as well use that
[20:03] <mattbrejza> (this is the point you regret the arduino because you have no idea if you have a timer free)
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[20:05] <Lunar_Lander> yea
[20:05] <Lunar_Lander> the thing is, I once got a timer code for the GM, which also has a pulse line
[20:06] <cm13g09> hmm SpeedEvil I appear to have ended up with an oversized time constant :P
[20:06] <Lunar_Lander> i.e. the pulse line wired to the arduino, and it would count itself
[20:06] <Laurenceb_> https://en.wikipedia.org/wiki/File:USS_Vincennes_%28CG-49%29_Aegis_large_screen_displays.jpg
[20:06] <Lunar_Lander> but that would screw up the communication with the GPS
[20:06] <Laurenceb_> this is what a ground station looks like :P
[20:07] <mattbrejza> if you use the hardware timer itll count no issues in the background
[20:07] <nigelvh> Make sure to use debounce in your hardware timer config though.
[20:08] <mattbrejza> i dont think itll be an issue tbh
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[20:09] <nigelvh> I've done it. They're very touchy.
[20:09] <nigelvh> There's built in debounce stuff, just enable it when you enable the timer to count.
[20:09] <mattbrejza> on a scope the signal from one of these radiation sensors dont appear to have any bounces
[20:10] <mattbrejza> i know theres some sort of signal conditioning though, not sure if can be turned off on an avr though
[20:10] <cm13g09> SpeedEvil: it turns out I'm a muppet :P
[20:10] <nigelvh> That's fine, but play with it. I've found them to be EXTREMELY touchy. If you don't need it great, but my experience has shown them to be helpful.
[20:10] <mattbrejza> either way, make it and find out Lunar_Lander :P
[20:11] <Lunar_Lander> yea
[20:11] <SpeedEvil> cm13g09: Miss Piggy, Kermit, or someone else?
[20:11] <cm13g09> lol
[20:11] <Lunar_Lander> XD
[20:11] <cm13g09> I was ever so slightly missing a power connection :P
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[20:13] <SpeedEvil> :)
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[20:15] <ibanezmatt13> Upu, reckon anybody would actually make this https://www.dropbox.com/s/3wnyuep2cac71yn/Oliver%27sLED.png [try not to laugh]
[20:15] <chrisstubbs> ibanezmatt13, hackvana will make it
[20:16] <chrisstubbs> for a small price
[20:16] <chrisstubbs> drop him an email for a quote
[20:16] <ibanezmatt13> It's the only board I've been able to get working in Eagle
[20:16] <mattbrejza> 'working'?
[20:16] <ibanezmatt13> well, to a point were it could be made
[20:17] <ibanezmatt13> I have done chrisstubbs
[20:17] <mattbrejza> boards take a while
[20:17] <mattbrejza> especaially when youre ocd
[20:17] <ibanezmatt13> Yeah, I am a bit :)
[20:18] <nigelvh> This is the board I just finished: http://digitalnigel.com/wordpress/wp-content/uploads/2013/07/Board1.png
[20:18] <ibanezmatt13> bloody hell, that looks complicated! But very nice :)
[20:19] <mattbrejza> does the gps antenna mind being placed like that?
[20:19] <nigelvh> It's a tracker. Lower left is boost converter, upper left is processor, upper right is radio and filters, lower right is GPS.
[20:19] <chrisstubbs> nigelvh, how do you fidn the chip antenna works sideways like that?
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[20:19] <chrisstubbs> *find
[20:19] <Lunar_Lander> mattbrejza, will look forward to it
[20:20] <Lunar_Lander> today I got all the parts for the circuit
[20:20] <Lunar_Lander> actually
[20:20] <Lunar_Lander> was funny
[20:20] <Lunar_Lander> I got two envelopes from farnell
[20:20] <nigelvh> It hasn't been tested yet, but I've not had any issues with similar antenna orientations.
[20:20] <Lunar_Lander> one with three inductors from Leeds, England
[20:20] <Lunar_Lander> and a big one with the other 22 things from Liege, Belgium
[20:20] <Lunar_Lander> xD
[20:20] <chrisstubbs> Will be interested to see how well it works
[20:20] <chrisstubbs> Saves a nice bit of PCB space
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[20:20] <Lunar_Lander> hi DrLuke
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[20:21] <nigelvh> Yeah, the antenna still obviously needs space away from the ground plane, but that 1/4" should be good I think.
[20:21] <ibanezmatt13> I really would love to create a tracker PCB
[20:21] <ibanezmatt13> even a very simple one
[20:21] <nigelvh> ibanezmatt13, it's going to take some time and practice. This was NOT my first board.
[20:22] <Lunar_Lander> yea
[20:22] <chrisstubbs> ibanezmatt13, you could start out making a thru hole one with a DIP arduino chip
[20:22] <chrisstubbs> keep it simple, then move on to smd parts after
[20:22] <Lunar_Lander> I actually think about if the PIN photodiode should be made one a proper board
[20:22] <ibanezmatt13> I started one of those chrisstubbs. Got schematic done, just the board layout kills me
[20:22] <Lunar_Lander> same here
[20:22] <chrisstubbs> Haha yeah it can be fustrating if you block yourself in
[20:23] <cde> smd will teach you patience :)
[20:23] <ibanezmatt13> not even that, the polygons don't work for me :)
[20:23] <chrisstubbs> good feeling when you have it done and its in your hand though :)
[20:23] <nigelvh> Yes, you learn with practice how to get yourself started well.
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[20:23] <chrisstubbs> I noticed you are using eagle lite
[20:23] <ibanezmatt13> yeah, is the full version pricey?
[20:23] <chrisstubbs> its not a restriction in that is it?
[20:24] <nigelvh> No, shouldn't be
[20:24] <nigelvh> * a restriction, that is.
[20:24] <nigelvh> Light version restrictions are board size and number of schematics.
[20:24] <ibanezmatt13> I don't mind that for now I think
[20:25] <nigelvh> There's a hobbyist version that's somewhat cheaper that gives you more space and number of schematics, but you have to sign a form saying you won't use it for commercial use.
[20:25] <ibanezmatt13> That would be ok, I won't be selling anything
[20:26] <ibanezmatt13> I'll stick with lite for now to get used to it
[20:26] <nigelvh> If I were you, I'd wait until the free version doesn't meet your needs anymore, then upgrade.
[20:26] <ibanezmatt13> That makes sense
[20:27] <ibanezmatt13> What's the crack with naming layers? Is it usual to have a 2 layer PCB with ground pours on top and bottom?
[20:27] <nigelvh> I usually do.
[20:27] <nigelvh> That's what's on my board you saw.
[20:28] <ibanezmatt13> Ok, I'll use that as a base for making my projects
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[20:28] <ibanezmatt13> the idea of 2 ground pours I mean
[20:30] <nigelvh> It depends on what your making, but it's generally a decent idea.
[20:31] <ibanezmatt13> I think for this ridiculous thing https://www.dropbox.com/s/3wnyuep2cac71yn/Oliver%27sLED.png 1 layer?
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[20:33] <Herman-PB0AHX> good evening to all, there are balloons planned this weekend?
[20:33] <Herman-PB0AHX> from uk
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[20:34] <Upu> possibly a foil
[20:35] <chrisstubbs> Evening Upu
[20:35] <Upu> hey chrisstubbs
[20:35] <nigelvh> Yes ibanezmatt13, there's no reason that wouldn't be fine as 1 layer.
[20:35] <chrisstubbs> Still faffing about with eagle, cheers for looking over the board. Changed the bits you mentioned
[20:35] <chrisstubbs> Did the regulator look okay to you?
[20:36] <Upu> yeah I do them using polygons now
[20:36] <chrisstubbs> How do you mean? the gnd, vin and vout as polygons?
[20:36] <SP9UOB-Tom> WOW we have antenna in Russia :-)
[20:36] <Upu> no all the connections
[20:37] <Upu> I'll show you in a bit
[20:37] <chrisstubbs> Ok cheers :)
[20:39] <cm13g09> evening chrisstubbs
[20:39] <chrisstubbs> hey cm13g09
[20:39] <Lunar_Lander> hi chrisstubbs
[20:39] <cm13g09> I have, what we think might be 70cm antennas....
[20:39] <chrisstubbs> multiple?
[20:39] <cm13g09> I have 3 of them...
[20:39] <Lunar_Lander> I think EAGLE is really difficult
[20:39] <cm13g09> picked them up as somebody was throwing them away
[20:39] <chrisstubbs> oo cool, magmount or what?
[20:40] <cm13g09> magmount, yes
[20:40] <nigelvh> Lunar_Lander, eagle definitely has quirks, but it works.
[20:40] <cm13g09> Lunar_Lander: be thankful it's not gEDA....
[20:40] <chrisstubbs> mount a pi ,srd and 3g dongle in the base and stick them to peoples cars ;)
[20:40] <cm13g09> chrisstubbs: lol
[20:40] <chrisstubbs> *SDR
[20:40] <cm13g09> for anyone that's wondering.... hackvana and I have a bit of a thing going....
[20:41] <cm13g09> I send over a file exported in gerber format, from gEDA
[20:41] <cm13g09> he know's it's gEDA, so tells me there's something up with the file formats/naming
[20:41] <cm13g09> I spend an hour or so working out what's changed in the checklist :P
[20:41] <cm13g09> send over new files ;
[20:41] <cm13g09> *;)
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[20:46] <DrLuke> Hi Lunar_Lander
[20:46] <DrLuke> Eagle is a piece of crap, use something else
[20:46] <DrLuke> if you're doing commercial work, altium probably is a good choice
[20:46] <DrLuke> especially when doing collaborative work
[20:47] <nigelvh> Altium is also about a million dollars.
[20:47] <DrLuke> yeah
[20:47] <DrLuke> but it's not stuck in the 90s
[20:47] <nigelvh> Eagle has a free version and a cheap hobbyist version.
[20:47] <DrLuke> that's true again
[20:47] <nigelvh> I'm not saying eagle is perfect, it's not, but it works.
[20:48] <DrLuke> In my eyes it's often frustrating even though it shouldn't be
[20:48] <chrisstubbs> at least its not autocad
[20:48] <cm13g09> chrisstubbs: lol
[20:48] <DrLuke> it's simple things like not being able to look at the board from "below"
[20:48] <DrLuke> so you have to work on the bottom layer all mirrored
[20:48] <nigelvh> Yes, that is annoying.
[20:49] <DrLuke> in my eyes it's essential though
[20:49] <cm13g09> I work with gEDA - it's slightly awkward now they've added 3D support....
[20:49] <nigelvh> I've not had an issue with it.
[20:49] <DrLuke> nigelvh: it usually is ok, but especially when placing silkscreen text it quickly becomes very confusing
[20:50] <DrLuke> or not being able to set individual paste layer retardation (is it called that?)
[20:50] <DrLuke> instead you can only set it globally
[20:50] <DrLuke> same for stopmask
[20:50] <Lunar_Lander> oh
[20:50] <DrLuke> because of that I had to go in and individually set it for over 100 pads manually
[20:51] <Upu> ping chrisstubbs
[20:51] <Upu> https://join.me/244-765-937
[20:51] <DrLuke> let's say for the "normal" use it's ok
[20:51] <Lunar_Lander> yea
[20:51] <Lunar_Lander> ohhh Upu Television
[20:51] <Lunar_Lander> :P
[20:51] <nigelvh> Yes, if you were making really advanced boards for money, then something like Altium makes sense.
[20:51] <nigelvh> But for a hobbyist, Altium is price prohibitive.
[20:51] <Lunar_Lander> how much is it?
[20:52] <Upu> do /join #upueaglefuntime if you want to watch
[20:52] <nigelvh> A few thousand dollars.
[20:52] <DrLuke> nigelvh: yep, that's why I'm trialling altium as soon as I get back home and will request a license for it at my new workplace
[20:52] <DrLuke> aww I would join if I weren't on mobile internet with very limited traffic :(
[20:52] <Lunar_Lander> yea
[20:52] <Lunar_Lander> I mean
[20:52] <Lunar_Lander> Origin is awesome, that plotting program
[20:52] <Lunar_Lander> $1000 but we have it at uni
[20:52] <Lunar_Lander> SciDAVis can do almost the same stuff also
[20:53] <Lunar_Lander> why isn't there a GNU version of Altium so to speak then
[20:56] <DrLuke> because altium is very advanced
[20:56] <DrLuke> with many awesome features
[20:56] <DrLuke> you don't just make something like that over night
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[21:02] Nick change: mfa298__ -> mfa298
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[21:03] <Lunar_Lander> yeah
[21:03] <Lunar_Lander> like mathematica I suppose
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[21:30] <Steve_2e0vet> is there any other site that i san send my telemetery too, other than spacenear.us
[21:31] <nigelvh> In the US, we tend to use APRS, so APRS.fi is a common one to look at.
[21:31] <nigelvh> But spacenear.us was pretty much designed for this one purpose.
[21:31] <Steve_2e0vet> thats not an option in the uk
[21:33] <fsphil> spacenear.us is probably the best for it
[21:33] <fsphil> all the rest will just be basic points on maps things
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[21:34] <nigelvh> Yes, spacenear.us does have the handy prediction bits.
[21:35] <fsphil> worth it for that alone
[21:35] <fsphil> I dunno how people did without that
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[21:38] <fsphil> you could use aprs.fi in the UK, just not directly on 144.800. not worth the bother
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[21:45] <iain_G4SGX> Evening.. I still havent found a chase car app works on my iphone but there is an open aprs app which works. A aprs object be transferred to habitat map by the admin i think?
[21:46] <Upu> hmm
[21:46] <Upu> Cuddykids app works fine
[21:46] <iain_G4SGX> which is that?
[21:47] <Upu> HABHUB
[21:47] <Upu> I think its called
[21:47] <iain_G4SGX> doesnt come up as available on app search on my iphone 4 or old ipad
[21:48] <iain_G4SGX> it did do, i installed it on my old phone, but now not available it seems.
[21:50] <chrisstubbs> Upu quick question, I made another gnd plane for the regulator but its blended in with the main board ground, i set the rank to 1 and main board ground rank to 2 but still merged together
[21:50] <iain_G4SGX> It was the last app i loaded before the phone died, oddly enough! lol
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[21:51] <Steve_2e0vet> thanks
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[22:13] <Lunar_Lander> Upu, thanks again for explaining
[22:13] <Lunar_Lander> I think I will have to get some more experience
[22:13] <iain_G4SGX> Another quick question (or 2) , I'm querying the max6 via UBX. Do I have to check lock before every gps query? Also how many peeps actually parse for the ACK after a CFG command? Is it really necessary?
[22:14] <fsphil> you don't have to parse the ACK, but it's safer to
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[22:14] <fsphil> or at least query the module for what mode it's currently in
[22:14] <fsphil> and if not flight mode, set it
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[22:17] <iain_G4SGX> I thought i could almost just rely on the checksum for the ACK. The chances statistically of receiving a random string with the same checksum as ACK just after a CFG is preety low.
[22:18] <iain_G4SGX> Quicker and easier to code
[22:18] <fsphil> yea
[22:19] <fsphil> I had code to read packets anyway so it was quite simple to read the ack
[22:20] <fsphil> it's a pretty simple format
[22:20] <iain_G4SGX> Im coding it in assembler so also have to extract the ack anyway for every string
[22:20] <iain_G4SGX> *checksum
[22:21] <fsphil> hardcore :)
[22:21] Action: fsphil is currently coding stuff in python .. long way from assembler
[22:21] <nigelvh> You doing your flight boards in python too?
[22:22] <fsphil> current code is for ground stuff, but when I get to the Pi payload it'll probably be done in python
[22:22] <nigelvh> Ah. Pi, that makes sense.
[22:22] <nigelvh> I hadn't heard of anyone doing python compiled to an atmega.
[22:23] <fsphil> not sure that'd ever work well
[22:24] <nigelvh> Would be an interesting experiment.
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[22:26] <iain_G4SGX> Hmm, well C would be easier to code for me at this point, now it just string manipulation. I just don't know how to mix the two in MLPABx. I've used 2K out of 128K so far so not really pushed for space
[22:26] <fsphil> yea why are you not using C?
[22:29] <Laurenceb_> bascom basic ftw
[22:29] <iain_G4SGX> Cos I've done lots of USART and hardware interface assembler on PICS in the past. Used to do modem stuff. I like assembler also. Like I like morse.. :)
[22:30] <fsphil> assembler can be interesting
[22:31] <iain_G4SGX> May well look up on mixing though at this point, sure its possible
[22:33] <Laurenceb_> http://www.mcselec.com/?option=com_content&task=view&id=14&Itemid=41
[22:33] <Laurenceb_> back in the day...
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[22:34] <cde> ...we had 9 planets
[22:34] <iain_G4SGX> wow, next it'll be Java.
[22:35] <fsphil> nobody is that cruel
[22:35] <cde> "Structured BASIC with labels."
[22:35] <cde> the future is now!
[22:36] <iain_G4SGX> Ill get my book on pascal out
[22:36] <Laurenceb_> you joke but...
[22:36] <Laurenceb_> http://www.stm32java.com/portal/
[22:38] <Laurenceb_> also http://www.mikroe.com/mikropascal/avr/
[22:38] <Laurenceb_> im sure there is a variant of rule 34 from µC
[22:41] <iain_G4SGX> I think its great, for too many years theres been a big gap between software and hardware people, now with the AVR etc programmers can do actual hardware stuff to. Great growth in the hobby. Bit like using a steam press to crack an egg though sometimes but memory is cheap these days so not an issue
[22:55] <iain_G4SGX> I abhor unnecessary code, its a sort of ADHD
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[23:06] <Laurenceb_> http://img2.joyreactor.cc/pics/post/%D0%B0%D1%82%D0%B5%D0%B8%D0%B7%D0%BC-811662.jpeg
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[00:00] --- Sat Aug 3 2013