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[06:47] <eroomde> morning
[06:48] <natrium42> hey eroomde
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[06:56] <eroomde> how are things natrium42 ?
[06:57] <eroomde> saw your thing on some yc demo day reports
[07:01] <UpuWork> morning
[07:02] <eroomde> morning UpuWork
[07:03] <UpuWork> does anyone know where the list of full license exam dates is ?
[07:03] <eroomde> sadly no idea
[07:04] <UpuWork> I think they only do it 4 times a year
[07:04] <Darkside> hey
[07:04] <Darkside> i stuck my cutdown on a cro
[07:04] <UpuWork> evening Darkside
[07:04] <UpuWork> a croc ?
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[07:05] <Darkside> the output of the regulator goes UP in voltage as vbatt drops
[07:05] <Darkside> http://i.imgur.com/AygW3.jpg
[07:05] <Darkside> check out that weirdness
[07:05] <UpuWork> The examination lasts two hours and it becomes available every two months.
[07:05] <UpuWork> ah
[07:05] <Darkside> eroomde: any idea?
[07:07] <eroomde> what are the two chanels?
[07:07] <eroomde> there appears to be two traces
[07:07] <Darkside> ok
[07:07] <Darkside> top trace is VBATT
[07:07] <Darkside> bottom is VCC (after the LDO)
[07:07] <eroomde> ok
[07:08] <eroomde> and the discrete event halfway is when you hit the fire button
[07:09] <Darkside> yes
[07:09] <Darkside> and it wraps back around
[07:09] <Darkside> the end of fire event is at the right of frams
[07:09] <Darkside> right on the edge
[07:09] <eroomde> whats the ldo?
[07:09] <eroomde> wondering the the dropout voltage gets too low if it just connects the output to vbat via a diode or something
[07:10] <Darkside> lemme get the part number
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[07:10] <eroomde> it looks like a diode drop voltage difference just about doesnt it?
[07:10] <Darkside> LM1117IMP-3.3
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[07:12] <bowkis> UpuWork: http://www.rsgb.org/tutors/advanced/examdates.php
[07:12] Nick change: bowkis -> number10
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[07:21] <Darkside> eroomde: yeah
[07:21] <Darkside> dropout voltage is 1.2v
[07:21] <Darkside> this may explain it
[07:21] <Darkside> i can drop in this: http://au.element14.com/analog-devices/adp3338akcz-3-3rl7/ldo-reg-1a-recision-3-3v-sot223/dp/1651283
[07:22] <Darkside> 100mV dropout voltage
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[07:22] <UpuWork> thanks number10
[07:23] <eroomde> Darkside: might be worth it
[07:23] <eroomde> but then that migt not help cope with the cutdown losd
[07:23] <eroomde> what is tour cutdown mechanism?
[07:23] <eroomde> your
[07:25] <Darkside> eroomde: ok its not that
[07:25] <Darkside> i just tested the LDO with a bench supply
[07:25] <Darkside> it doesn't spike up
[07:26] <Darkside> ok, cutdown si a N fet, which connects the nichrome to ground.
[07:26] <Darkside> fet is driven via a 100R resistor, and the input to that is tied to ground with 3.3k
[07:27] <eroomde> does you test it on the bench with a representative load?
[07:27] <Darkside> i'm testing it with a but of nichrome wire
[07:27] <Darkside> which loads it up nicely
[07:27] <eroomde> and does the bench supply voltage drop like the batteries does when under that load?
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[07:29] <UpuWork> All that streaming and tracking on Sat cost me a whole £10.86 in data, only used 286Mb
[07:29] <Darkside> im just working on testing it with a bench supply
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[07:29] <eroomde> mosty girls on facebook?
[07:30] <UpuWork> yeah probably
[07:30] <fsphil> UpuWork.. three are fairly expensive
[07:30] <fsphil> actually they all are
[07:30] <UpuWork> compared to O2's over use they aren't :)
[07:30] <UpuWork> 4p a Mb
[07:31] <Darkside> eroomde: running from a bench supply, VCC rose by 100mV or so
[07:31] <Darkside> bench supply did not sag
[07:31] <UpuWork> But didn't loose connection once whcih was super
[07:31] <eroomde> thats not far off what you paid!
[07:31] <UpuWork> could have left the camera running in the car
[07:31] <UpuWork> ---/\ should
[07:32] <Darkside> didn't catch the current
[07:32] <Darkside> 2.5A
[07:32] <Darkside> at 6V
[07:32] <eroomde> scope the voltsge drop across a resistor on your 2nd channel
[07:33] <Darkside> usig the bench supply, the chip didnt reset
[07:33] <Darkside> its when the battery voltage drops, something goes dodgy
[07:33] <eroomde> thats why current would be interesting
[07:34] <Darkside> hmm
[07:35] <Darkside> i'm interested in the voltage on the fet input
[07:35] <Darkside> i'm wondeirnng if thats causing problems
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[07:36] <eroomde> ang on
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[07:36] <eroomde> what did you say your test rig was?
[07:36] <eroomde> 'a but of nichrome wire'
[07:37] <eroomde> is it coiled up?
[07:37] <Darkside> hardly
[07:37] <Darkside> i know what you're thinking
[07:37] <eroomde> ok nvm
[07:38] Action: fsphil thinks happy thoughts
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[07:39] <fsphil> any flights this weekend?
[07:40] <UpuWork> Navrac is going up ?
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[07:43] <Darkside> eroomde: so it seems current is flowing back through the FET somehow
[07:43] <Darkside> i wonder if a zener diode across the FET control line would help
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[07:49] <Darkside> ok eroomde, running th cutdown from a separate supply doesn't raise VCC much
[07:49] <Darkside> even with the separate supply dropping down to 4.6v
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[08:10] <UpuWork> ping priyesh fancy making an iPhone app ?
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[08:11] <LazyLeopard> priyesh: Lots of chase cars this morning... ;)
[08:12] <UpuWork> I see alot of people have Androids :)
[08:12] <priyesh> morning
[08:13] <priyesh> hey UpuWork
[08:13] <priyesh> yeah, Jon is running it on the way to Dorking
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[08:13] <fsphil> ack, I left my phone in the car
[08:13] <fsphil> was gonna test it
[08:14] <LazyLeopard> I forsee a requirement for limits on who can use it... ;)
[08:14] <fsphil> hah
[08:14] <fsphil> carsnear.us
[08:15] <priyesh> hehe
[08:15] <priyesh> the speed is correct now too
[08:15] <LazyLeopard> Yeah... The side-bar is pretty much full of cars at the moment, but it's the balloons folk want to see.
[08:15] <LazyLeopard> Well, mostly.
[08:15] <fsphil> perhaps no info box for the chase cars
[08:15] <fsphil> just the icon
[08:16] <LazyLeopard> Sort the cars to the bottom of the list?
[08:16] <UpuWork> so any chance of doing this for the iPhoine priyesh ?
[08:16] <priyesh> UpuWork: maybe, but i dont have an iphone nor a mac
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[08:17] <UpuWork> I can sort the iPhone out, do you really need a Mac to dev software for the iPhone ?
[08:17] <UpuWork> or did I just say a stupid ?
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[08:18] <UpuWork> ah apparently you do
[08:18] <UpuWork> that sucks
[08:18] <priyesh> yeah, you need a mac
[08:19] <UpuWork> how annoying
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[08:20] <priyesh> so i assume you have an iphone UpuWork?
[08:20] <Randomskk> are apple developer accounts still $100, too?
[08:20] <priyesh> yeah i think so
[08:20] <Randomskk> oh apple
[08:20] <Randomskk> also xcode is the worst, I hear
[08:20] <priyesh> and thats per year
[08:21] <UpuWork> I have a few spare iPhone 3GS that are unlocked, we replaced the company ones with 4S's
[08:21] <priyesh> could try using phonegap to make it, but then the apple developer fee still hits you
[08:22] <UpuWork> yeah
[08:22] <UpuWork> and Matt here tells me you may have issues submitting it to the store
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[08:22] <UpuWork> oh well
[08:22] <UpuWork> Welcome to Apple have a very nice day
[08:23] <priyesh> for google, i only had to pay a $25 one time fee
[08:23] <fsphil> that's awful
[08:23] <fsphil> I didn't realise apple where so strict
[08:23] <priyesh> and thats not for the dev tools
[08:23] <priyesh> just to put it on the market
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[08:24] <priyesh> which im happy to pay for as its one off
[08:24] <priyesh> but 100 per year is a different story
[08:25] <priyesh> UpuWork: why is it unlikely to get on the store?
[08:25] <priyesh> are the rules very strict?
[08:26] <UpuWork> no idea but Matt who does some iPhone dev stuff here says Apple keep changing the rules
[08:26] <priyesh> :-(
[08:26] <UpuWork> Adobe AIR to App was subject to a law suit which Adobe won
[08:26] <priyesh> yeah, ive done some AIR stuff
[08:26] <UpuWork> but Apple blocked content not developed with their tools for a while
[08:27] <UpuWork> something like that I'm just relaying information here
[08:27] <priyesh> then realised that it wasnt so good
[08:27] <Randomskk> yet they allow fart apps
[08:27] <Randomskk> it's crazy
[08:27] <priyesh> lol
[08:27] <UpuWork> Just chatting with him now
[08:27] <UpuWork> see if I can convince him to do it
[08:27] <priyesh> they see a clear target market
[08:28] <UpuWork> priyesh does your app have a point that tells you what direction the payload is in relative to the orientation of the car ?
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[08:28] <priyesh> no, but that could be cdone in a future version
[08:29] <priyesh> ill add it to the wishlist
[08:29] <UpuWork> Daveake's program does that and it really helps alot
[08:29] <priyesh> yeah, i can imagine
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[08:30] <Randomskk> there's an android app "hamgps" that lets you put in a GPS position and it gives a (3d) arrow towards it which is really neat
[08:31] <Randomskk> in theory priyesh your app could have a payload dropdown, get the latest position, show an arrow... it'd be cool :P
[08:31] <Randomskk> becoming more and more a habhub/habitat app than just a chase car app admittedly
[08:31] <priyesh> yeah, i use an app called gps status which has a radar
[08:31] <priyesh> use it at all the recoveries
[08:32] <priyesh> could easily automate it in this app
[08:33] <UpuWork> http://www.flickr.com/photos/daveake/6892152054/in/set-72157629717191599
[08:33] <UpuWork> this
[08:33] <UpuWork> is super useful
[08:33] <UpuWork> Matt here says he'll have a look at it
[08:34] <priyesh> :-)
[08:34] <UpuWork> priyesh do you have screen shots and access to the source code ?
[08:34] <UpuWork> which I can pass to him "for the maths"
[08:34] <priyesh> screenshots are on the market
[08:34] <priyesh> source is on github
[08:35] <UpuWork> lol love the icon
[08:35] <priyesh> he's welcome to ask me any questions wrt the habitat interaction
[08:35] <UpuWork> ok thx
[08:36] <UpuWork> A+++++ would chase HAB again lol
[08:36] <UpuWork> do you have that icon in psd or something ?
[08:36] <priyesh> yeah
[08:36] <UpuWork> he's going to have a look this weekend
[08:37] <priyesh> cool
[08:37] <UpuWork> got a link to your github ?
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[08:38] <UpuWork> I think he found it
[08:38] <UpuWork> under the ApexHab on ?
[08:38] <UpuWork> one
[08:38] <priyesh> no
[08:39] <priyesh> https://github.com/PriyeshPatel/habhub-chase-car-tracker
[08:39] <priyesh> has he done android stuff before?
[08:39] <UpuWork> yeah and windows
[08:39] <UpuWork> he likes his devices
[08:40] <priyesh> hehe
[08:40] <priyesh> :-)
[08:40] <Randomskk> tell him to get on #habhub if he needs to chat about the habitat stuff, too
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[08:40] <UpuWork> yeah he's been on there before when he was writing the iphone chase car app but it uses the older upload method I think
[08:40] <UpuWork> he was going to re-write it
[08:41] <Randomskk> aah
[08:41] <Randomskk> cool
[08:41] <UpuWork> JackNorris
[08:42] <UpuWork> him
[08:43] <Randomskk> I remember
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[08:45] <priyesh> do you know if itll be opensource?
[08:45] <UpuWork> it will and free
[08:46] <priyesh> ok
[08:46] <priyesh> :-)
[08:46] <UpuWork> he's quite keen on that
[08:46] <priyesh> lets see if it gets onto the store
[08:46] <UpuWork> well he never managed to get the original one in the store
[08:47] <UpuWork> I keep having to get the dev cert put on my phone every 3 months
[08:47] <priyesh> aww
[08:47] <priyesh> what was the reason ?
[08:47] <UpuWork> tbh I think it was him just not pushing it
[08:47] <priyesh> ok
[08:50] <priyesh> bbl
[08:50] <UpuWork> I'll push him a bit more this time and give him more of a project plan
[08:50] <UpuWork> ok
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[09:04] <WillDuckworth> hey priyesh - nice work
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[09:22] <UpuWork> http://spacenear.us/tracker/ I amended the info pane to reflect current status
[09:23] <daveake> lol
[09:23] <priyesh> UpuWork: back
[09:24] <priyesh> UpuWork: nice job :P
[09:24] <daveake> I feel so left out that I'm not driving too :p
[09:24] <pjm__> is there a balloon launch this coming long weekend?
[09:25] <daveake> Only if someone hands me a free MkI 1600 hwoyee
[09:25] <daveake> And Ozzie on the 8th
[09:25] <eroomde> moaning #2
[09:26] <eroomde> why all the chase cars?
[09:26] <daveake> moaning knot 1
[09:26] <priyesh> WillDuckworth: thanks
[09:26] <eroomde> are they just randoms or is something being coordinated?
[09:27] <daveake> Good job chase cars don't need notams
[09:28] <priyesh> eroomde: i can only say that it's my fault: https://play.google.com/store/apps/details?id=com.pexat.habhub.chasecartracker
[09:30] <gonzo_> they do if you get them airborne!
[09:30] <UpuWork> http://i.imgur.com/mk2jr.jpg
[09:30] <UpuWork> Best go work out how much they cost
[09:30] Action: daveake emails that to Radiometrix ...
[09:30] <UpuWork> lol
[09:30] <daveake> priyesh Is this new/direct method faster/better/more reliable than the http method? Is the latter likely to disappear anytime?
[09:31] <priyesh> by http do you mean requests to spacenear.us/tracker/track.php?
[09:31] <LazyLeopard> UpuWork: What are they? Apart from rather small.... ;)
[09:31] <UpuWork> RFM22B modules
[09:31] <daveake> gonzo_ Difficult to get a car airborne, except possibly for Upu's when a H2 cylinder goes up
[09:32] <UpuWork> that would do it
[09:32] <gonzo_> airborne is easy, doing it in one piece is more difficult
[09:33] <gonzo_> hehe
[09:33] <priyesh> UpuWork: does the iPhone sdk allow you to put a service in the background. e.g. you can start the android app and the tracker and then go do other things and it'll happily continue tracking
[09:33] <gonzo_> I had an H2 cyl blow it's relief valve once. That was bloody dangerous
[09:34] <gonzo_> and in a room with bunsen's going
[09:34] <UpuWork> priyesh yes I believe so
[09:34] <UpuWork> the existing app I have backgrounds
[09:34] <gonzo_> About 20 of us jumoped out of the window
[09:34] <UpuWork> I'm going to do the screen design this evening
[09:34] <daveake> priyesh I have a Windows XP app for my car PC, and one of its functions is to post the car position/speed (cough)/etc which it does via http
[09:34] <UpuWork> jumped :)
[09:35] <UpuWork> daveake we are borrowing parts of your app
[09:35] <UpuWork> going to have a payload details screen like the little screen you have
[09:35] <priyesh> daveake: anyway the new method directly with habitat is much better as it retains information in the database and so habitat can relate chase cars to specific flights, etc
[09:35] <daveake> priyesh cool. Documented somewhere or do I need to look at your code? :)
[09:36] <danielsaul> priyesh: I think it s miy internet connection, no the VPS
[09:36] <danielsaul> argh
[09:36] <priyesh> it's all documented (ish), but feel free to ask me any questions
[09:36] <danielsaul> It won't let me change channel :S
[09:36] <daveake> Cheers, I'm sure I will :)
[09:36] <LazyLeopard> I think you're going to need a way to keep cars off the map unless they're related to a current flight.
[09:36] <danielsaul> (Icon copyrighted me, despite what the ReadMe says :P)
[09:37] <daveake> My current code is a bit unreliable on a mobile connection and I need to get that sorted
[09:37] <priyesh> LazyLeopard: it'll ease off once people are done playing
[09:38] <daveake> UpuWork Is this for Anrdoid / iPhone?
[09:38] <UpuWork> priyesh is for Android
[09:38] <eroomde> check out cusf.co.uk btw peeps
[09:38] <eroomde> lots of stuff on martlet 1, the rocket
[09:38] <UpuWork> I have someone working on iPhone with a collegue
[09:38] <eroomde> bits arriving back from machinists
[09:39] <daveake> UpuWork cool
[09:39] <eroomde> that's what the hedgehog flight computer is for, among other things
[09:39] <LazyLeopard> Whose balloon is ANU? Presumably it's just a payload under test?
[09:39] <daveake> number10
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[09:39] <daveake> yes, testing
[09:40] <number10> yes just testing clear if you wish
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[09:40] <UpuWork> Plan is the app will at its core be a chase car app but front end will do either map view or payload detail view indicating current direction to payload etc like yours
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[09:41] <UpuWork> There is a feature request in there to cap the maximum reported speed :)
[09:41] <priyesh> do we have any other iPhone users here?
[09:41] <UpuWork> how many said yes on your survey ?
[09:42] <priyesh> 4
[09:42] <priyesh> compared to 22 android
[09:42] <priyesh> :P
[09:42] <UpuWork> interesting
[09:42] <UpuWork> "Siri where is my payload"
[09:42] <priyesh> haha
[09:42] <priyesh> that would be awesome
[09:42] <UpuWork> :)
[09:43] <daveake> lol re capping
[09:43] <priyesh> just to let you know the 4 iphones are: 2xiphone4, 2xiphone4s
[09:43] <UpuWork> ok
[09:43] <daveake> "In a tree. Should I call a tree surgeon for you?"
[09:43] <UpuWork> lol
[09:45] <LazyLeopard> number10: Heh. At least it's a balloon. ;)
[09:45] <LazyLeopard> Gives all those cars something to pretend to be chasing. ;)
[09:46] <daveake> We need a new icon for when chasers get out on foot. Perhaps a little man with a mast and pair of scissors?
[09:46] <UpuWork> lol
[09:47] <LazyLeopard> ...or a chainsaw.
[09:47] <eroomde> people in camo crawling beneath the wheat line
[09:48] <eroomde> creeping 100m into a field of crop
[09:48] <eroomde> trying to be unseen by the farmer
[09:48] <eroomde> maybe
[09:48] <daveake> :D
[09:48] <daveake> Man with torch if it's dark
[09:49] <number10> :)
[09:59] <eroomde> oh cool
[09:59] <eroomde> arduino does some things quite sensibly
[09:59] <eroomde> eg the servo lib will output to the servos at 50hz regardless or what you're doing
[10:00] <eroomde> you don't have to set up your own 50hz loop containing servo.write
[10:00] <eroomde> not used to having all these clever libraries
[10:00] <eroomde> though i'm sure it'll be annoying if i actually want to use a timer myself
[10:00] <eroomde> what do people do in that situation?
[10:00] <eroomde> just drop down into avrlibc?
[10:05] <daveake> I've not had that but there are several timers and you may get away with just using a different one
[10:05] <eroomde> yes indeed
[10:06] <eroomde> i'll have a look which one the servo lib uses
[10:06] <daveake> Yeah, I did that for the PWM stuff
[10:07] <fsphil> I'm using the hardware timer for my rtty stuff
[10:07] <daveake> In the end I didn't use the PWM anyway, but it is documented, somewhere
[10:07] <eroomde> i do quite like the arduino though (not really used it properly before) but it does let you get stuff done very quickly
[10:07] <daveake> me2 fsphil
[10:07] <eroomde> the sort of stuff it's not worth spending too long on
[10:07] <daveake> Indeed
[10:08] <eroomde> i'm just making a quick driver for some servo driver ball valves for a rocket firing we're doing today
[10:08] <fsphil> I also hook into that a sort of general purpose timer
[10:08] <eroomde> the whole thing is about 15 lines of cocde
[10:08] <fsphil> so other code can implement a timeout feature
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[10:11] <daveake> UpuWork AVA doesn't send out the payload direction, does it?
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[10:17] <UpuWork> no
[10:17] <fsphil> is it useful to have?
[10:18] <fsphil> it could be calculated, although not as accurately, from the coordinates
[10:19] <UpuWork> RFM22B modules are £6.05 including VAT with the discount code
[10:21] <griffonbot> Received email: Anthony Stirk "[UKHAS] RFM22B"
[10:22] <fsphil> sweet
[10:22] <UpuWork> about a quid less than Sparkfun
[10:23] <Matt_soton> well done UpuWork, you made a breakout board for a breakout board :P
[10:24] <UpuWork> lol
[10:24] <UpuWork> breakout board inception
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[10:25] <Matt_soton> btw can those ubloxs just be configured to give out NMEA @ 4800?
[10:25] <UpuWork> yeah you can adjust the baud rate default is 9600
[10:25] <Matt_soton> and so replace my lassen without me bothering to reprogram
[10:26] <Matt_soton> and then send it serial commands to work above 12km also?
[10:26] <UpuWork> yeah
[10:26] <UpuWork> though personally I would adjust the code
[10:26] <UpuWork> all the commands have been documented by jcoxon on the wiki
[10:26] <Matt_soton> well adjusting it for a different baud rate isnt too much of a problem
[10:26] <UpuWork> and amending the baud rates are in the data sheets
[10:27] <Darkside> hey all
[10:27] <UpuWork> hi Darkside
[10:27] <Darkside> been playing more with my ground station stuff :P
[10:28] <Darkside> also my cutdown payload now has different TX modes
[10:28] <Darkside> so it can either send RTTy, or it can go into a morse code mode
[10:28] <UpuWork> likely to work ?
[10:28] <Darkside> well the actual cutdown stuff another guy is looking at
[10:28] <Darkside> i'm focusing on teh radio side
[10:28] <UpuWork> ok
[10:29] <UpuWork> so are you intending the commands to be sent via HAM radio rather than a corresponding RFM22B ?
[10:29] <Darkside> ham radio most likely
[10:29] <Darkside> this ground station thing is more for playing around
[10:29] <Darkside> i might hook it to a amp at some point
[10:29] <Darkside> but i still want a decent ground test system
[10:29] <Darkside> and this is the easiest way of doing it
[10:29] <Darkside> my interactive tuning mode is fun
[10:29] <UpuWork> Would 5W via a decent Yagi do it ?
[10:29] <Darkside> UpuWork: i did it with 3W
[10:30] <Darkside> over a 7km path filled with houses and trees
[10:30] <UpuWork> fair enough
[10:30] <daveake> fsphil / UpuWork Yeah, my car PC app uses the direction and speed to figure out an approx landing spot to aim for
[10:31] <daveake> I was a bit confused on Saturday because the direction it was showing was the one it picked up from Cloud earlier :-)
[10:31] <daveake> But as you say it can calculate everything from pairs of co-ords
[10:41] <Matt_soton> do those rfm22b modules actually do 50 baud or do people just change the centre frequency of the radio every 1/50sec?
[10:41] <daveake> Just setting the frequency
[10:42] <daveake> There are frequency registers and an offset register. Either work.
[10:45] <Matt_soton> i was going to try to use a CC1101 instead
[10:46] <Matt_soton> probably just to be difficult
[10:50] <Laurenceb> got a breakout for the cc1101?
[10:54] <jonsowman> anyone using a ft817 with hamlib with fldigi?
[10:55] <UpuWork> o7
[10:55] <UpuWork> dl-fldigi ?
[10:55] <jonsowman> yes]
[10:55] <UpuWork> I do under Windows
[10:55] <jonsowman> what's the config? baud/stop bits etc?
[10:56] <UpuWork> its something daft like 4800 sec I'll check
[10:56] <jonsowman> also all the rest of the settings on that page.. write delays and flow control...
[10:57] <UpuWork> 4800 2 stop bits
[10:57] <UpuWork> PTT via Hamlib
[10:57] <UpuWork> everything else unchecked
[10:57] <UpuWork> if you're unsure install HRD which seems to just get it and can turn the rig on if you've left it off
[10:57] <UpuWork> check settings under that
[10:58] <Upu> http://i.imgur.com/f9wcC.png
[10:58] <UpuWork> afk
[10:58] <jonsowman> ta UpuWork
[11:00] <priyesh> anyone got settings for the icom ic7000 & hablib>
[11:00] <priyesh> * ?
[11:04] <Darkside> ok, updated the ground stationc ode
[11:04] <Darkside> UpuWork: you might be interested in it, if you're using the RFM22B
[11:05] <Darkside> and whoever else has a RFMssB
[11:05] <Darkside> RFM22b*
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[11:16] <Matt_soton> Laurenceb: ill just make one
[11:16] <Laurenceb> cool
[11:16] <Laurenceb> try the 1020 then you can uplink :P
[11:17] <Matt_soton> cc1101 is uplink
[11:17] <Laurenceb> oh
[11:17] Action: Laurenceb grabs datasheet
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[11:20] <Matt_soton> i dont know what the 1020 has over it
[11:20] <Matt_soton> the 1020 is mre expensive
[11:20] <Matt_soton> so probably has stuff that is annoying to use and we wont want
[11:21] <kokey> the RFM22B looks like it could fit into some kind of chip socket
[11:21] <Darkside> it doesn't
[11:21] <Darkside> its not 2.54mm pitch
[11:21] <Darkside> but upu has breakouts anyway
[11:21] <kokey> oh he does now, awesome
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[11:22] <daveake> Think it's 2mm pitch. On my "bugs" I fix them to 0.1" pin headers on 2 adjacent pins. To do it properly use Upu's breakout :-)
[11:22] <Darkside> hehe
[11:22] <Darkside> i just made a proper pcb..
[11:22] <Darkside> need to make one with a gps now :P
[11:22] <daveake> :)
[11:22] <Darkside> since these are way cheaper than radiometrix moduels
[11:22] <daveake> They are, and more flexible in many ways of course
[11:24] <Matt_soton> btw UpuWork on your store, you know need a new sub heading for radios like GPS does (imo)
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[11:29] <Laurenceb> Matt_soton: cc1020 has better lna on the front
[11:29] <Laurenceb> also it has raw ADC registers
[11:29] <priyesh> clearing tracker of stale cars
[11:29] <Matt_soton> oh i see
[11:29] <Laurenceb> im not sure if cc1101 can do that
[11:29] <Matt_soton> raw ADC registers meaning you can get data at 1MSPS or what would you use it for?
[11:29] <Matt_soton> it probably has temperature too
[11:31] <Laurenceb> well
[11:31] <Laurenceb> you can also grab data after the digital filter
[11:31] <Laurenceb> so ive used it to make a SDR
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[11:33] <Matt_soton> oh ok
[11:33] <kokey> how much is a cc1020?
[11:34] <Matt_soton> free :P
[11:34] <Matt_soton> the 1101 is £3 off farnell mind you
[11:34] <Laurenceb> i got 2x eval boards from mouser
[11:34] <Laurenceb> but £90 or so :(
[11:34] <kokey> or rather, what's a good package to get the cc1020 in?
[11:34] <Matt_soton> well QFN or QFN :(
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[11:34] <Matt_soton> and it has a central pad to solder
[11:35] <Laurenceb> shrug
[11:35] <Laurenceb> hot air
[11:35] <Matt_soton> yea but it needs i need to ask someone to get the paste out rather then just use the iron :P
[11:36] <Darkside> naw what you do is make a wide thermal pad underneath it
[11:36] <Darkside> and solder from the bottom
[11:36] <Matt_soton> thats one way
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[11:37] <zyp> why don't you just get a stencil and solder the entire board with paste?
[11:37] <Laurenceb> then theres the small job of writing some software defined RTTY decode
[11:37] <Laurenceb> but thatd be good to have anyway
[11:39] <Matt_soton> the cc1101 doesnt seem to bad actually
[11:40] <Laurenceb> i dont know what you can do with the test registers
[11:40] <Laurenceb> its not documented
[11:41] <Matt_soton> test registers?
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[11:52] <kokey> is there a simple development/breakout for the cc1101/cc1020?
[11:53] <Matt_soton> simple yes, cheap no
[11:53] <kokey> ah ok
[11:54] <kokey> yeah I saw the expensive ones
[11:54] <r2x0t> something like RFM board would be nice
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[11:56] <Matt_soton> there maybe, tbh i havnt really looked
[11:56] <Matt_soton> i intend to make some myself
[11:56] <Laurenceb> look on mouser
[11:56] <Laurenceb> i have some of the cc1020 ones
[11:57] <Matt_soton> mouser have something which is £10
[11:57] <Laurenceb> hooked one up to arduino and received some hab flights a while back
[11:57] <Matt_soton> that comes up when you search
[11:57] <UpuWork> cheers Matt I'll do that later
[11:57] <Matt_soton> dont actually know what it is
[11:57] <UpuWork> (subheading)
[11:57] <Matt_soton> :) np
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[11:57] <jonsowman> UpuWork: liking chasecarsnear.us
[11:57] <UpuWork> :_)
[11:57] <UpuWork> fingers
[11:58] <UpuWork> had a mad idea about the display on this iPhone app
[11:58] <daveake> oh?
[11:58] <UpuWork> well
[11:58] <UpuWork> anyone remember this : http://i.imgur.com/vVTaj.jpg
[11:59] <kokey> hahaha
[11:59] <daveake> lol
[11:59] <UpuWork> specifically the "radar" at the bottom
[11:59] <daveake> yes :)
[11:59] <UpuWork> that managed to show where things were in relation to you in 3D
[11:59] <UpuWork> well that :)
[11:59] <daveake> I remember playing that whilst drunk ...
[11:59] <UpuWork> 2012 style
[11:59] <kokey> ah, yes, good idea
[11:59] <UpuWork> maths... anyway bbs
[12:01] <Matt_soton> ,l;
[12:01] <Matt_soton> urgh jonsowman
[12:01] <daveake> You should cross it with Colossal Cave .... "Your payload is in a forest of tall trees, all alike"
[12:02] <r2x0t> lol
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[12:03] <kokey> haha
[12:04] <kokey> I wonder if one could perhaps also provide a feed to one of the existing iPhone augmented reality apps
[12:06] <daveake> UpuWork SD cards arrived just now :)
[12:07] <UpuWork> cool :)
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[12:07] <daveake> Postie popped the package thru the letter box ... spot the error here :p
[12:09] <daveake> He obviously missed the "signed for" bit :p
[12:09] <NigeyS> better than a "while you were out" card .. ive had those when ive been in !!
[12:09] <daveake> ditto
[12:09] <daveake> Made them send him back!
[12:10] <NigeyS> and he's known for the last 3 years the doorbell don't work...plank!
[12:10] <NigeyS> hah good one :D
[12:10] <daveake> He pushed it thru the door then legged it
[12:10] <NigeyS> lol
[12:10] <UpuWork> lol glad I paid extra for the service :/
[12:10] <NigeyS> complain dude
[12:10] <daveake> You should claim as it's obviously been lost now :D
[12:11] <daveake> Action shot of Ava coming down - http://imgur.com/AjSdf
[12:11] <daveake> (well that's what I assume it is) :)
[12:15] <NigeyS> badooooom !
[12:25] <LazyLeopard> Waaaaah! *crash*
[12:26] <UpuWork> Your item is being processed but we have not received confirmation of delivery.
[12:26] <UpuWork> not going to have either
[12:27] <NigeyS> lol compo claim upu ;)
[12:27] <daveake> :D
[12:27] <UpuWork> well it got there
[12:28] <daveake> but did it?
[12:28] <daveake> :D
[12:30] <kokey> it will be a long time before companies like TNT will do the last mile delivery
[12:31] <kokey> I've had worse with BT tho
[12:32] <kokey> after a 17 day wait for an engineer to come do my line, I spent the day at home waiting for him, then phoned them the next day and they say the engineer said I wasn't home and the next available slot is like another 17 days into the future
[12:32] <kokey> I exploded a little bit, and they scheduled another appointment for 2 days later
[12:32] <kokey> the engineer didn't come but they switched it on at the exchange
[12:33] <NigeyS> hah sounds like virgin media
[12:33] <NigeyS> "nobody was home" yes i bloody was!
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[12:58] <daveake> Write up for the Ava/cloud/buzz flights - http://www.daveakerman.com/?p=441
[13:06] <cuddykid> obj C has the weirdest syntax :S
[13:08] <daveake> UpuWork I think Ava photographed us on the way down :)
[13:14] <eroomde> nice writeup daveake :)
[13:15] <Laurenceb> http://www.daveakerman.com/wp-content/uploads/2012/04/P1040136-1024x682.jpg
[13:15] <Laurenceb> trollface.jpg
[13:15] <daveake> thanks eroomde :)
[13:16] <Darkside> 8 people to launch a balloon?
[13:16] <Darkside> psh
[13:17] <Randomskk> it lets everyone be involved :P
[13:17] <kokey> elaborate cooling system you have for your LCD display
[13:17] <daveake> lol kokey
[13:17] <daveake> It fits. Kinda. :)
[13:20] <WillDuckworth> nice one daveake - when's the next flight?
[13:22] <daveake> No idea :)
[13:22] <griffonbot> Received email: David Akerman "Re: [UKHAS] Flight Announcement Saturday 31/03/2012 Cloud/Buzz/Ava"
[13:22] <daveake> I need to find out what happened to Cloud's GPS and why its transmissions were relatively weak.
[13:24] <NigeyS> which antenna dave ?
[13:25] <daveake> 1/4 wave with 4 radials, soldered direct to NTX2
[13:25] <NigeyS> hmm shouldve been fine
[13:26] <daveake> Used that arrangement before and it's been fine except for when the aerial was bent once (and it wasn't this time)
[13:26] <NigeyS> same thing i do with picochu, solder them into the sma footprint on the pcb .. theyve tended to be extremely reliable
[13:26] <daveake> I've done the same with the Buzz payloads too, using NTX2 or RFM22B
[13:27] <daveake> Buzz has always been a nice clear signal
[13:27] <NigeyS> gremlins, or maybe a dry join ?
[13:27] <NigeyS> joint*
[13:27] <daveake> I'll take a look
[13:27] <daveake> Not opened the payload up yet aside from to get the cameras out
[13:27] <daveake> and to remove the batteries when Upu couldn't get into his car :p
[13:28] <Randomskk> hehe
[13:29] <NigeyS> lol
[13:29] <daveake> "oy! are you still transmitting?"
[13:30] <NigeyS> haha woopsie
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[13:42] <fsphil> my car keys seem to work on 434.075
[13:42] <fsphil> the .650 payload doesn't block it
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[13:43] <daveake> yeah this was on .075
[13:47] <cuddykid> WillDuckworth: do you have permission or any requests in the pipeline?
[13:56] <WillDuckworth> not at the moment unfortunately - any news your end?
[13:56] <WillDuckworth> possible friday launch maybe?
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[14:14] <cuddykid> no permission here, now I have a working tracker I could knock something up fairly quickly
[14:15] <cuddykid> I'll try and remember to call David Miller in a bit
[14:18] <cuddykid> I want to try and do an altitude attempt soon - knock daveake off his podium :P
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[14:23] <cuddykid> it's that balance between float and altitude :P - to slow ascent = float, to high = burst to low
[14:23] <cuddykid> too
[14:27] <WillDuckworth> hmmmm - it's a tricky one
[14:28] <WillDuckworth> any miller time yet?
[14:28] <cuddykid> I guess it requires a huge balloon, tiny payload, to generate an ascent of ~4ms that can be sustained
[14:28] <cuddykid> not yet, I'll ring him in 5
[14:29] <cuddykid> &and a bit of luck!
[14:30] <daveake> cuddykid oy!
[14:31] <fsphil> poor daveake, up on that podium for a while now
[14:31] <daveake> Yeah I'm getting dizzy
[14:32] <daveake> We need someone with a Mk1 1600g hwoyeee ....
[14:32] <fsphil> it's all that hydrogen
[14:32] <daveake> could be
[14:32] <fsphil> speaking off, I better call boc
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[14:35] <fsphil> did you get the regulator from them daveake?
[14:35] <daveake> Upu did
[14:37] <cuddykid> WillDuckworth: he's on the case! He said he will try and get something sent in the next few days
[14:37] <cuddykid> probably for next week
[14:37] <cuddykid> are you flight ready?
[14:38] <daveake> Re the "podium", I didn't think it'd last this long, especially with some other 1600's having gone up recently with light payloads
[14:38] <cuddykid> daveake: are any special licences etc needed for hydrogen?
[14:38] <cuddykid> yeah - I think it is a lot of luck!
[14:39] <daveake> cuddykid read the guide that Upu wrote
[14:39] <cuddykid> on the wiki?
[14:39] <daveake> and don't have your FET-destroying brain in when you use it :D
[14:39] <daveake> yes
[14:39] <cuddykid> lol
[14:39] <cuddykid> and I've destroyed my NEO.. :(
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[14:44] <cuddykid> how much does it cost for hydrogen cylinder?
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[14:47] <UpuWork> £50 for a 7.1l
[14:47] <UpuWork> but its flipping massive
[14:47] <UpuWork> and filled 2 1600g balloons
[14:47] <WillDuckworth> BOC?
[14:47] <UpuWork> was nice to have too much gas
[14:47] <UpuWork> yes
[14:47] <cuddykid> oh wow!
[14:48] <cuddykid> WillDuckworth: fancy going for one of them and we can split it?
[14:48] <WillDuckworth> it's an idea :)
[14:48] <UpuWork> you will need a £150 regulator though
[14:49] <WillDuckworth> ouch
[14:49] <kokey> you can use the leftover gas for a scale model Hidenburg
[14:50] <kokey> Hindenburg
[14:50] <BrainDamage> hook a another cutdown line to a filament inside the balloon
[14:50] <BrainDamage> and maybe a solenoid to premix air with H2 to ensure stochiometric mix
[14:51] <cuddykid> £150 :O maybe not then!
[14:52] <r2x0t> lol... cutdown, Mythbusters style
[14:53] <UpuWork> if you pick it up I'm sure daveake will let you borrow the H2 regulator
[14:54] <daveake> cuddykid if you're doing 2 flights, get the 7.1 K cylinder which will be enough, and pm me re getting the regulator to you
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[14:54] <daveake> If you're only doing 1, then get a notam for 2 and I'll bring and share :D
[14:55] <Laurenceb> did you pick it up from boc?
[14:55] <cuddykid> cheers daveake - I'll liaise with WillDuckworth as I think he's got a flight in the pipeline :D - if not, you can come up and share!
[14:55] <daveake> You'll also be needing a filler hose - acetylene ones fit
[14:56] <Laurenceb> daveake: did you pick it up from boc?
[14:56] <daveake> Upu did the BOC stuff
[14:56] <Laurenceb> im wondering if he had warning stickers on his car
[14:56] <UpuWork> I did
[14:56] <Laurenceb> as you probably should for hydrogen
[14:56] <Laurenceb> ah
[14:57] <Laurenceb> yeah otherwise they might have been a little unhappy about loading it :P
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[14:58] <daveake> Mag stickers are cheap, and make the experience so much safer ...
[14:58] <kokey> his car registration is H28OMB
[14:58] <kokey> that should do
[14:58] <cuddykid> lol
[14:58] <daveake> lol
[14:59] <cuddykid> hmmmmm
[14:59] <cuddykid> I wonder..
[14:59] <cuddykid> surely it can't be that hard to create a custom envelope (out of strong thin material)
[15:00] <cuddykid> for a pico payload
[15:00] <daveake> DVLA don't have H2 UPU :(
[15:00] <UpuWork> :)
[15:00] <UpuWork> I would show you a picture
[15:00] <UpuWork> oh
[15:00] <UpuWork> i.imgur.com/0PNEW.jpg
[15:00] <UpuWork> there
[15:01] <UpuWork> http://i.imgur.com/0PNEW.jpg
[15:01] <kokey> should get a car that runs on H2
[15:01] <UpuWork> note badge
[15:01] <cuddykid> nice
[15:01] <kokey> cuddykid: like two sheets of transparent plastic?
[15:01] <cuddykid> kokey: exactly
[15:02] <kokey> does it have to be sealed? you can probably just punch holes in it and sew them together
[15:02] <Laurenceb> you filled a fire extinguisher with H2?
[15:02] <kokey> or just sew them together
[15:04] <UpuWork> http://i.imgur.com/IRqzr.jpg
[15:04] <UpuWork> big cylinder
[15:05] <daveake> These are the little ones with built-in reg http://www.boconline.co.uk/pdf_downloads/products/products_by_type/hydrogen_cylinder_54_zh_data_sheet.pdf
[15:05] <UpuWork> very slow flow rate on those though
[15:05] <daveake> yep
[15:05] <UpuWork> like an hour to fill 1000g
[15:05] <cuddykid> where are your safety glasses?!?! lol
[15:06] <daveake> Yes, this was slightly quicker :)
[15:06] <UpuWork> well Ed pointed out if it blew up safety glasses probably wouldn't help
[15:06] <cuddykid> good point
[15:06] <daveake> :D
[15:06] <daveake> You'd find the safety glasses melted into your skull
[15:08] <kokey> it would be a bit like that tan you get with sunglasses
[15:08] <kokey> just a lot worse
[15:09] <kokey> perhaps a modified welding mask, with less tint
[15:09] <Randomskk> hey everybody, http://habitat.habhub.org/ept/
[15:10] <kokey> cuddykid: perhaps some kind of food packaging solution would work nicely
[15:10] <cuddykid> kokey: yep
[15:11] <kokey> like a shallow tray and a heat sealer
[15:12] <griffonbot> Received email: Adam Greig "[UKHAS] Payload Telemetry Export"
[15:15] <NigeyS> Randomskk: what an excellent idea :D :p
[15:15] <Laurenceb> hydrogens not too bad
[15:15] <Laurenceb> ive ignited wheely bin liners full
[15:16] <NigeyS> :o
[15:16] <Randomskk> NigeyS: ;P
[15:16] <Laurenceb> big bang, maybe enough to throw you off your feet if you are close
[15:16] <Randomskk> "not too bad"
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[15:16] <Randomskk> "maybe enough to throw you off your feet"
[15:16] <NigeyS> Randomskk: you did that bloody quick, nice work!
[15:16] <UpuWork> oo super
[15:17] <Laurenceb> well its not like the hindenburg
[15:17] <daveake> When we were filling, there were 2 local schoolgirls in the field and they took great interest in what we were doing (asking questions, starting a facebook page, etc etc...). They asked what the gas was and when they were told H2 their reaction was something like "Pah! What are you worried about? We play with that stuff in the lab at school!"
[15:17] <Laurenceb> "starting a facebook page"
[15:17] <Randomskk> hehe
[15:17] <Laurenceb> wut
[15:17] <BrainDamage> you should've said it's ClF3
[15:17] <russss> heh
[15:18] <NigeyS> wtf lol they ban buncen burners, but play with hydrogen instead..... :|
[15:18] <daveake> Dunno but they were busy posting pix and comments, apparently
[15:19] <Laurenceb> facebook is weird
[15:19] <daveake> We've booked them as our media management for next time
[15:19] <UpuWork> interesting the telemetry line at burst wasn't recorded by anyone but I did get a nearly full decode in the car
[15:20] <NigeyS> BrainDamage: ClF3 .. chlorine ? .. periodic elemnt table brain fail :/
[15:21] <BrainDamage> chlorine triflouride
[15:21] <NigeyS> oh that wonderful stuff :|
[15:21] <BrainDamage> https://en.wikipedia.org/wiki/Chlorine_trifluoride
[15:22] <NigeyS> yup, that's the 1 i was thinking of, evil stuff
[15:22] <daveake> " In an industrial accident, a spill of 900 kg of chlorine trifluoride burned itself through 30 cm of concrete and 90 cm of gravel beneath"
[15:22] <daveake> nice
[15:23] <russss> http://pipeline.corante.com/archives/2008/02/26/sand_wont_save_you_this_time.php
[15:23] <kokey> I guess you can't fill a balloon with chlorine trifluoride
[15:23] <BrainDamage> depends, if it's a metallic balloon, you can
[15:24] <kokey> just have to fill the atmosphere with something heavier so it can float
[15:24] <NigeyS> It is hypergolic with every known fuel, and so rapidly hypergolic that no ignition delay has ever been measured.
[15:24] <daveake> "... the operator is confronted with the problem of coping with a metal-fluorine fire. For dealing with this situation, I have always recommended a good pair of running shoes.
[15:25] <BrainDamage> normally it makes a passivation layer
[15:25] <BrainDamage> you need to constantly remove that layer to get the fire sustained
[15:25] <BrainDamage> much like Al
[15:26] <Laurenceb> lol ignites glass
[15:26] <Laurenceb> thats insane
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[15:27] <NigeyS> that's probably 1 of the most evil chemicals i've read about :|
[15:30] <Randomskk> haha brutal
[15:30] <Randomskk> we covered that in semiconductor engineering briefly
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[15:38] <r2x0t> As part of the "Fluorine for the Atomic Age" program of the glorious 1950s and 1960s, Air Products and Allied Chemical had 18-wheel road tankers with 30.000L tank capacities to transport liquified Fluorine and Chlorine Trifluoride on American highways around the country to the various application sites.
[15:38] <r2x0t> ^ what could possibly go wrong
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[15:42] <Laurenceb> well theyve got to move it somehow
[15:42] <Laurenceb> tho that much seems just slightly dangerous
[15:44] <russss> fluorine for great justice
[15:44] <russss> wtf did they need that much fluorine for
[15:45] <NigeyS> dare i say military application ?
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[15:45] <kokey> drain cleaning
[15:45] <nigelvh> Because we can
[15:46] <nigelvh> That's why we do everything.
[15:46] <Laurenceb> uranium enrichment
[15:47] <russss> ah of course
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[15:49] <daveake> OT http://i.imgur.com/AJnwF.jpg
[15:49] <Laurenceb> genius
[15:50] <nigelvh> nice
[15:52] <NigeyS> hah
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[16:03] <LazyLeopard> daveake: Heh ;)
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[16:07] <Matt_soton> kokey: http://iteadstudio.com/store/index.php?main_page=product_info&products_id=290
[16:11] <kokey> Matt_soton: thanks!
[16:12] <Matt_soton> np :)
[16:12] <eroomde> from my rss feed as a big press release
[16:12] <eroomde> 'The SLS Program has completed step one in a combined System Requirements Review and System Definition Review  both extensive NASA-led reviews that set requirements to further narrow the scope of the system design and evaluate the vehicle concept based on top-level program requirements.'
[16:13] <Laurenceb> hell yeah
[16:13] <eroomde> there aren't the words to describe how pleased i am to not be working for esa/nasa anymore
[16:13] <Laurenceb> management hi 5s all around
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[16:15] <Matt_soton> kokey: it doesnt actually say what frequency thats designed to work at
[16:15] <Matt_soton> http://www.elecfreaks.com/store/433mhz-rf-transceiver-cc1101-module-p-191.html
[16:15] <Matt_soton> hoewever says 434
[16:15] <Matt_soton> also thats 2.0mm header :/
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[16:15] <Laurenceb> Matt_soton: http://ukhas.org.uk/guides:chipcon_cc1020_software_define_radio
[16:16] <eroomde> Its exciting to see how far this program has come in such a short time, said Todd May, SLS program manager at NASAs Marshall Space Flight Center in Huntsville, Ala.
[16:16] <Laurenceb> if i havent linked you that before
[16:16] <eroomde> lol
[16:16] <Laurenceb> heh
[16:17] <Matt_soton> nice Laurenceb
[16:17] <Matt_soton> although SDR on a balloon is a bit ott
[16:17] <Laurenceb> i dont know
[16:17] <Laurenceb> im thinking passive SAR
[16:18] <Matt_soton> how would the front end of a c1020 compare to a elonics 4000?
[16:18] <Matt_soton> *cc1020
[16:20] <NigeyS> is it me or does that antenna look like a brass spring? :|
[16:20] <Laurenceb> Matt_soton: id imagine cc1020 would have better out of band rejection
[16:20] <Laurenceb> Matt_soton: but cc1020 has a poor noise figure
[16:20] <Laurenceb> about 11dB
[16:21] <Matt_soton> oh yea, quite crap
[16:21] <Laurenceb> so i put an lna on the front
[16:21] <Matt_soton> but combine with a lna
[16:21] <Matt_soton> :P
[16:21] <Laurenceb> yeah already done it
[16:21] <Laurenceb> not with the results on that page tho
[16:21] <Matt_soton> but that is adding more work, could just get a funcube/digital tv dongle
[16:21] <Matt_soton> i am thinking ground station
[16:22] <Matt_soton> what lna would you use?
[16:22] <Laurenceb> i have a roll of RFMD ones
[16:23] <Laurenceb> free samples
[16:23] <Matt_soton> are they 4 pins + DC block + inductor 'pullup' ?
[16:24] <Laurenceb> more or less yes
[16:24] <Laurenceb> but they are a pita to stop oscillating
[16:25] <Laurenceb> well - if you are dead bugging
[16:25] <Matt_soton> oh :P
[16:25] <Laurenceb> i had to encase mine with some copper foil
[16:25] <Matt_soton> i would make a board with the cc1020
[16:25] <Laurenceb> yeah thats the sane way
[16:26] <Matt_soton> i might see if elonics will give me some parts
[16:26] <Matt_soton> brb
[16:26] <griffonbot> Received email: Adam Greig "[UKHAS] Re: Payload Telemetry Export"
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[16:45] <edmoore> Successful throttling biprop just test fired
[16:45] <edmoore> Extreme happiness here
[16:46] <Randomskk> :D
[16:46] <edmoore> This is our internal design for a lunar landar style hovering rocket
[16:48] <daveake> XD
[16:48] <daveake> Oh wrong LL ....
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[16:52] <number10> sounds like you have a fun jon edmoore
[16:52] <number10> job
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[16:54] <eroomde> number10: heck yes
[16:54] <eroomde> we're just about to review data
[16:54] <eroomde> while planning drinks
[16:54] <eroomde> it's been a long while coming
[16:55] <number10> a celebration I suspect
[16:55] <number10> is there any info online?
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[16:58] <eroomde> will be soon
[16:58] <eroomde> about to put a couple of pics up
[16:58] <eroomde> but really this is all in prep for a launch in scotland in may
[16:58] <Randomskk> you're going to be there professionally too?
[17:00] <eroomde> nope this is amatuer too
[17:00] <eroomde> spare time project
[17:00] <Randomskk> ah
[17:00] <Randomskk> wow, that's quite some spare time project
[17:00] <eroomde> but my boss is also chairman of ukra so he's going to this launch anyway with it
[17:00] <eroomde> yes
[17:00] <Randomskk> jeez :p jealous
[17:00] <eroomde> it's a bit like google
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[17:00] <eroomde> quite pro a-day-a-week on fun stuff
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[17:05] <eroomde> http://www.flickr.com/photos/eroomde/7042431651/in/photostream/
[17:06] <eroomde> http://www.flickr.com/photos/eroomde/6896340820/
[17:06] <eroomde> there's a couple of pics
[17:06] <eroomde> video later probably
[17:07] <eroomde> got many megs of data to wade through first
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[17:12] <Bob_G8NSV> hi all
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[17:15] <Bob_G8NSV> see everyone is playing with Priyesh's new app
[17:15] <Bob_G8NSV> got it loaded here but not runing
[17:16] <LazyLeopard> Only three there at the moment. I think I saw six at one point...
[17:17] <Bob_G8NSV> saw that earlier today
[17:17] <Bob_G8NSV> seems excellent good work!
[17:17] <Bob_G8NSV> will be most useful
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[17:29] <eroomde> looks like we got 50N-200N on that first run
[17:29] <eroomde> which is very promising
[17:30] <eroomde> was looking for 3:1 throttleability
[17:35] <NigeyS> good work Ed :D
[17:35] <NigeyS> Chase Cars Near.Us
[17:35] <NigeyS> Current Launch :
[17:35] <NigeyS> lols
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[17:37] <Randomskk> haha
[17:40] <number10> telemetry export looks handy Randomskk
[17:40] <Randomskk> thanks! the telem has always been relatively easy to get in JSON format but a lot of people just wanted the raw sentences
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[17:41] Nick change: Udin_SHARP_ -> Udin_SHARP
[17:43] <eroomde> ok test firing video is sexy :)
[17:43] <Randomskk> sexy and uploading I hope :P
[17:43] <eroomde> unfort james wants me to save it
[17:43] <Randomskk> aww
[17:43] <eroomde> we're make an ael youtube account
[17:44] <eroomde> and it'll christen that
[17:44] <Randomskk> heh fair enough
[17:44] <Randomskk> does ael stand for anything?
[17:44] <eroomde> but we're going to up the thrust a bit tomorrow
[17:44] <eroomde> trying to get 300N
[17:44] <Randomskk> cool
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[17:45] <eroomde> why is the most time consuming thing in a video player the rebuilding of a font cache
[17:45] <eroomde> why does it even need to go near my font cache?
[17:46] <NigeyS> vlc?
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[17:46] <RocketBoy> te-he - just had to share http://mail.google.com/mail/help/promos/tap/
[17:46] <cuddykid> http://ravenaerostar.com/products/aerospace/super-pressure-balloons
[17:47] <daveake> :-) RocketBoy did you see the "8 bit" Google Maps?
[17:47] <eroomde> my mba can't smoothly do 1080p
[17:47] <eroomde> that's a bit hopeless
[17:47] <RocketBoy> is that the 8 bit arm emulation?
[17:48] <daveake> Nah ... http://i.imgur.com/PeTCv.png
[17:48] <eroomde> RocketBoy: just had a successful static test of our throttling biprop
[17:48] <daveake> That's the landing spot for Saturday's flight, as seen on April 1st :)
[17:49] <RocketBoy> woooooo - biprop what are the bi's
[17:49] <eroomde> N20 and IPA
[17:49] <eroomde> http://www.flickr.com/photos/eroomde/6896340820/in/photostream
[17:49] <eroomde> bodged this throttle control up this morning
[17:49] <daveake> Those knobs aren't nearly impressive enough, considering!
[17:50] <RocketBoy> :-)
[17:50] <eroomde> there's a big red button for the igniter
[17:50] <eroomde> if that helps
[17:50] <daveake> Much better
[17:50] <NigeyS> lol gotta have a big red button!
[17:51] <eroomde> the arduino outputs get turned into rj45 that you can see in the connector the the red cable
[17:51] <eroomde> that goes to the control room patch panel
[17:52] <eroomde> which goes through to the firing bay panel
[17:52] <eroomde> and then despliced into an optoisolation veroboard which goes to a local powersupple for the servos
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[17:52] <RocketBoy> http://en.wikipedia.org/wiki/Isopropyl_alcohol& NO2 - woo - respect
[17:52] <eroomde> then there's a time sync pulse which gets bodged onto coax which goes through to the firing bay too and into one of the spare data logger inputs
[17:53] <RocketBoy> scary mix
[17:53] <navrac> ping upu upuwork
[17:53] <Upu> pong
[17:54] <navrac> hi upu - just stuck a panic order for a new ublox pcb - the one i have is a bit insensitive nad discovered if it looses lock it resets itself if its in powersave mode
[17:54] <daveake> eroomde ... "bodged onto coax" ... veroboard ... duct tape ... NO2 ... IPA ... luvvit :)
[17:54] <RocketBoy> I have seen the co-axial tri-prop fire up on the alcohol - massive extra boost
[17:55] <Upu> which one do you have ?
[17:55] <eroomde> it'll be prettified soon :)
[17:55] <navrac> its a pico one
[17:55] <navrac> it just seemes a bit deafer than the last one
[17:55] <eroomde> but am off to france tomorrow after work so really wanted to get a firing off today
[17:55] <eroomde> and woo!
[17:55] <Upu> odd
[17:55] <eroomde> daveake: you can see the bodge onto coax
[17:56] <eroomde> it's the banana plug to bnc adaptor at the back
[17:56] <eroomde> onto the white coax cable
[17:56] <navrac> i knew it reset if you put it in powersave and it hadnt got lock - but i didnt realise if it lost lock it crashed out too
[17:56] <Upu> do you think thats a fault with the board ?
[17:57] <daveake> eroomde lovely :)
[17:57] <navrac> no - it could be static sensitive and I touched it too much when playing with it
[17:57] <navrac> not really sure
[17:57] <Upu> hmm ok I'll do another one and have it posted tomorrow
[17:57] <Upu> only got 1 MAX6 left, new ones should be there tomorrow
[17:57] <navrac> thanks - i paid for next day
[17:57] <Upu> yup
[17:57] <Upu> noted, I''ll get that sorted first thing
[17:57] <navrac> how much extra is a sarantel based one?
[17:58] <navrac> and how much heavier?
[17:58] <Upu> alot
[17:58] <Upu> the Satantel antenna is about 7g on its own ?
[17:58] <daveake> ABout that
[17:59] <Upu> so ~9g for the Sarantel board maybe a tad less
[17:59] <navrac> ugghh too heavy
[17:59] <Upu> :)
[17:59] <Upu> 7g :)
[17:59] <Upu> too heavy
[17:59] <NigeyS> 10 grams
[17:59] <NigeyS> just chucked 1 on the scales for ya
[17:59] <Upu> thx
[17:59] <Upu> it uses 1.6mm PCB too
[17:59] <eroomde> bbl
[18:00] <daveake> My FSA03 bug is 16g, and my Upu-ceramic is 7g
[18:00] <navrac> nah i'll stick with the pico one
[18:00] <Upu> ok if it exhibits the same issues let me know
[18:00] <navrac> will do
[18:01] <Upu> I think I have an older NEO-6 with Sarantel antenna, I'll send it down and you can check if it does the same thing if you want ? No cost
[18:02] <Upu> no use for flight as it has a header in it
[18:04] <navrac> no its ok - I can reset in code - but if it keeps doing it then it will cause a problem in flight. As I said I think its just a feature of the ublox - but It just seems this particular pico board is less sensitive so it happens more often
[18:05] <Upu> ok
[18:07] <navrac> I guess if I touched the ceramic aerial too often I could have desensitised it. I'm just monitoring it and its behaving now
[18:08] <Upu> unless its built up a charge ?
[18:08] <Upu> They are a bit hit and miss indoors but outdoors they don't seem to have a problem
[18:09] <navrac> its got about a semicircle of sky where it is - this one seems to taked longer to lock than the last two I had from you
[18:11] <navrac> AS I sadi its probably something i've done
[18:11] <Upu> ok I'll send you one tommorrow, ok need to go cook back soon
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[18:15] <OZ1SKY_Brian> hi
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[18:19] <OZ1SKY_Brian> priyesh are you there?
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[18:28] <OZ1SKY_Brian> ahh very nice video/pic from the cloud/ava launch.
[18:29] <OZ1SKY_Brian> Did the camcorder die, or have it come to life again?
[18:31] <cuddykid> lol
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[18:31] <navrac> i wonder who is on the summon list and where it gets it from
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[18:32] <navrac> now lets see...
[18:32] <griffonbot> @project_sharp: Another interesting image from our latest launch. On this one you can see the thermocouple floating in 0g #UKHAS http://t.co/Yt2QS2M7 [http://twitter.com/project_sharp/status/187246213396054016]
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[18:33] <jcoxon> Oi
[18:33] <navrac> hey it works!
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[18:33] <jcoxon> Uhuh
[18:33] <jcoxon> Whats up?
[18:34] <navrac> hello jcoxon - thought I'd try it as I wanted a quick chat as I have a powersaving problemette
[18:35] <navrac> when I stick the ublox in powersave - if it looses lock it also resets - is that what you saw as well?
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[18:37] <cuddykid> navrac there's something about that on the wiki I think
[18:37] <navrac> thats about it resetting if you put it in powersave BEFORE having a fix
[18:37] <cuddykid> ahh
[18:38] <navrac> I hadn't realised it would happen if I lost lock too
[18:38] <navrac> and my code that resets it has a bit of an issue too - and since I knicked it off jcoxon I thought I'd ask his advice
[18:40] <jcoxon> It didn't to me, but it was certainly acting funny
[18:40] <eroomde> bk
[18:40] <jcoxon> Hence my thoughts on its unreliability
[18:41] <navrac> I use your code off the wiki to check in flight mode - which also tells me if its reset - but I noticed after I call it, I get some rubbish on the serial and it ignores the next poll message - any idea on what might be happening
[18:42] <navrac> so my debug output shows
[18:42] <jcoxon> Needs more work
[18:43] <jcoxon> I have to go
[18:43] <jcoxon> Bbl
[18:43] <navrac> oh drat - can't cut and paste across terminal server
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[18:43] <navrac> ok sorry to disturb you
[18:43] <eroomde> medics
[18:43] <eroomde> always running off
[18:43] <eroomde> with some lame excuse
[18:43] <eroomde> emergency surgery or spme other bs
[18:45] <NigeyS> lol
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[18:57] <Laurenceb_> can anyone here help me with bluetooth?
[18:58] <Laurenceb_> im trying to write a widget in qt that connects to a device and graphs some data
[18:58] <Laurenceb_> - over bluetooth
[18:58] <Laurenceb_> whats the best way to do this on linux?
[18:58] <Laurenceb_> /dev/rfcomm would have to be created first right?
[18:58] <BrainDamage> I think bluez is the standard daemon that handles bluetooth
[18:59] <BrainDamage> check the api?
[18:59] <BrainDamage> not sure I qt has wrappers
[18:59] <Laurenceb_> so how would that work? itd do device discovery and the user selects what they want to connect to?
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[19:00] <Laurenceb_> yeah atm im using bluez from the command line
[19:02] <eroomde> is there some bluez wrapper thant'll turn it into a generic char driver?
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[19:14] <Laurenceb_> atm i use bluez to discover the device and setup /dev/rfcomm6, then cat (or whatever) /dev/rfcomm,x.
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[19:14] <eroomde> what is a decent free bit of software to do basic movie editing in osx?
[19:14] <eroomde> basically just to trim the length
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[19:14] <eroomde> and maybe resize to 720p
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[19:15] <Randomskk> don't you have iLife?
[19:15] <Randomskk> my macbook came with iMovie I seem to recall
[19:15] <Randomskk> which probably does what you want
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[19:17] <Laurenceb_> when are they going to move onto j
[19:17] <nigelvh> If you know the time at which you want to trim it, handbrake will do that and a conversion
[19:18] <Randomskk> handbrake is nice
[19:18] <nigelvh> I don't do any trimming, but I use handbrake frequently to put videos in the right format/size for my iphone/ipad.
[19:21] <Randomskk> it's also great for ripping dvds
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[19:21] <Laurenceb_> not that anyone would do that
[19:22] <eroomde> ok thanks
[19:22] <eroomde> will try handbrake
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[20:06] <Elmar_PD3EM> Evening all!
[20:07] <nigelvh> Afternoon
[20:07] <Elmar_PD3EM> haha... still early at your QTH nigelvh ;-)
[20:08] <nigelvh> Yep. 13:08
[20:08] <Elmar_PD3EM> 22:08 here... so westcoast for you?
[20:08] <nigelvh> Yep. Seattle
[20:08] <fsphil> long way from here!
[20:09] <fsphil> ain't the internet amazing
[20:09] <nigelvh> Yes it is.
[20:09] <Elmar_PD3EM> great! I live near Rotterdam
[20:09] <Elmar_PD3EM> haha.... dam#$ time difference ;-)
[20:09] <nigelvh> Not sure where that is, but I suppose a map would tell me.
[20:09] <Elmar_PD3EM> The Netherlands
[20:10] <nigelvh> Ah, my heritage then.
[20:10] <Elmar_PD3EM> close to the famous windmills of Kinderdijk
[20:10] <fsphil> I saw a fair few windmills when I was there
[20:10] <nigelvh> Never been, but do hope to visit here at some point.
[20:10] <Elmar_PD3EM> your heritage nigelvh ?
[20:11] <fsphil> and lots of tourist shops selling clogs
[20:11] <Elmar_PD3EM> haha... true
[20:11] <nigelvh> Yes, I'm half dutch. My last name is Vander Houwen (or at least that's how we spell it over here)
[20:11] <fsphil> and for some reason an NKH film crew
[20:11] <fsphil> NHK*
[20:12] <Elmar_PD3EM> always lots of Japanse tourists there
[20:13] <Elmar_PD3EM> nigelvh: that explains! We spell it here as Van der Houwen
[20:13] <nigelvh> That's what I've heard.
[20:13] <Elmar_PD3EM> your father is Dutch?
[20:13] <nigelvh> Both mom and dad have a bit.
[20:13] <nigelvh> But the name is my father's side.
[20:13] <Elmar_PD3EM> aha. nice
[20:15] <Elmar_PD3EM> BTW, I got a question about connecting the "Upu" ublox6 to an Arduino....
[20:15] <fsphil> upublox :)
[20:16] <Elmar_PD3EM> upublox indeed :-)
[20:16] <Elmar_PD3EM> this is how I think it should be connected (with a level converter):
[20:17] <Elmar_PD3EM> GPS LC PWR SPLY Arduino
[20:17] <Elmar_PD3EM> ======= ====== ============ ===========
[20:17] <Elmar_PD3EM> Vcc <-> LV--HV <-> + 5 Volt <-> +5 Volt
[20:17] <Elmar_PD3EM> GND <-> GND <-> GND <-> GND
[20:17] <Elmar_PD3EM> TXD <----------------------------------> pin2
[20:17] <Elmar_PD3EM> RXD <----------------------------------> pin3
[20:17] <nigelvh> Close
[20:18] <Elmar_PD3EM> so? i missed something... ;-)
[20:18] <daveake> Resistors
[20:18] <nigelvh> TXD from the ublox can go straight to the arduino because the arduino will accept a 3.3V signal as a high, however, the 5V high from the arduino needs to be reduced to 3.3V into the RXD line on the ublox
[20:19] <nigelvh> As daveake said, a simple resistor divider will work fine.
[20:19] <Elmar_PD3EM> ok. so the RXD <----> pin 3 neeed to go via the LC as well
[20:20] <nigelvh> Also note that the 3.3V pin on an arduino is supplied by the FTDI chip, and cannot source enough power to run the GPS.
[20:20] <nigelvh> Also, your pins that you're referencing, 2 and 3, I assume you mean the pins of the atmega and not what the arduino software labels them as?
[20:20] <daveake> 2 resistors needed to drop the 5V Arduino Tx to 3V3 at the GPS
[20:20] <Elmar_PD3EM> that's why I want to power it via the 5 Volt power supply via the HV --> LV of the LC
[20:20] <daveake> No need for anything more complicated to level convert
[20:21] <daveake> Or ..... use an Arduino Mini Pro 3V3, then you don't need any converters and the regulator will easily supply the GPS too
[20:21] <nigelvh> That would work too
[20:23] <Elmar_PD3EM> ok. also a possibility ;-) Got an 5 Volt Pro mini and an Arduino Uno so I want to try with that first
[20:24] <nigelvh> So, to summarize, supply 3.3V Vcc somehow. Connect the ground straight through, connect TXD from the GPS straight to the arduino, and simply add two resistors to reduce the voltage from the arduino to the RXD line of the GPS.
[20:25] <nigelvh> And yes, those pins should be correct assuming you're referencing them as the atmega pins and not the arduino pins
[20:25] <Elmar_PD3EM> thanks nigelvh (and daveake)!
[20:25] <nigelvh> Also note, if you use those pins (the hardware uart), you won't be able to program the arduino without unplugging the GPS
[20:26] <Upu> and the 3.3v pin on the 5v Arduino isn't enough to power the module
[20:26] <Upu> evening
[20:26] <nigelvh> Any serial devices attached to those pins during programming will disrupt it.
[20:26] <nigelvh> Upu: yep, we've mentioned that.
[20:26] <Upu> ah ok
[20:26] Action: Upu goes back to sleep :)
[20:26] <Upu> ah yes I see now
[20:26] <Upu> sorry should have read back
[20:26] <Elmar_PD3EM> No, it are Arduino Uno pins... so that need to be pin 0 and 1?
[20:27] <Upu> can be anything if you use software serial
[20:27] <nigelvh> Ok, so if you're using 2 and 3 I assume you plan to use software serial then?
[20:27] <Elmar_PD3EM> yes. Thats what I.ve read on pin 2 and 3 and the software serial
[20:27] <nigelvh> Yep
[20:27] <nigelvh> that will be fine
[20:28] <nigelvh> pins 2 and 3 happen to be the physical pins on the atmega chip that handle the hardware uart, so that was where my confusion was from.
[20:29] <Elmar_PD3EM> so, this should be fine with an external 5 Volt power supply (via Polulu 5V boost regulator):
[20:29] <Elmar_PD3EM> GPS LC PWR SPLY Arduino
[20:29] <Elmar_PD3EM> ======= ====== ============ ===========
[20:29] <Elmar_PD3EM> Vcc <-> LV--HV <-> + 5 Volt <-> +5 Volt
[20:29] <Elmar_PD3EM> GND <-> GND <-> GND <-> GND
[20:29] <Elmar_PD3EM> TXD <----------------------------------> pin2
[20:29] <Elmar_PD3EM> RXD <-> RXO--RXI <--------------------> pin3
[20:29] <nigelvh> That looks fine
[20:30] <Laurenceb_> tarduino
[20:30] <Elmar_PD3EM> thanks a lot!
[20:30] <Laurenceb_> it had to be said
[20:30] <fsphil> LV--HV is a 3.3v regulator yea?
[20:30] <Elmar_PD3EM> it's the sparkfun LC
[20:30] <nigelvh> Just be sure that the LC can source enough current
[20:31] <Elmar_PD3EM> it's the one mentioned by Upu on his store ;-)
[20:32] <Upu> I recommended it just to be safe
[20:33] <nigelvh> Well, I'll assume Upu knows what he's talking about and that it can handle the current
[20:33] <Randomskk> uhm
[20:33] <Elmar_PD3EM> yes and because my arduino's are 5v I need to power the GPS via seperate power supply
[20:33] <Randomskk> hang on
[20:33] <Upu> as long as you power the GPS from a 3.3v source that can do the current the level converter will wokr
[20:33] <Randomskk> Elmar_PD3EM: what else connects to the GPS Vcc?
[20:33] <Randomskk> besides the LC's LV
[20:33] <Upu> yeah hang on you're not meant to power the GPS from the level converter
[20:34] <Randomskk> the level converter doesn't supply power
[20:34] <nigelvh> My impression of what Elmar_PD3EM is wanting is to power it from the LC
[20:34] <Randomskk> yea
[20:34] <Upu> thats not right
[20:34] <nigelvh> I didn't think so, but maybe it was fancy
[20:34] <Upu> no its not :)
[20:35] <Upu> the answer is use a 3.3v Arduino
[20:35] <Elmar_PD3EM> ok.....
[20:35] <nigelvh> So then he'll need a separate 3.3v regulator to use his existing arduino.
[20:35] <Upu> correct
[20:35] <Upu> I am doing a board with regulator and level conversion circuits
[20:35] <r2x0t> you can replace 5v regulator on audino board for 3.3v one
[20:35] <r2x0t> and run it all from 3.3v
[20:35] <Upu> you can but in theory you need to switch to 8Mhz too
[20:36] <nigelvh> The chip may not run reliably at 16MHz at 3.3v though
[20:36] <Elmar_PD3EM> sound easier ;-)
[20:36] <Upu> honestly 3.3v Arduino job done
[20:36] <r2x0t> they run just fine at 16MHz
[20:36] <Upu> they do actually
[20:36] <Upu> but thats not the point :)
[20:36] <Laurenceb_> what gps?
[20:36] <nigelvh> I have as well, but it's not necessarily related.
[20:36] <nigelvh> rated*
[20:37] <nigelvh> To summarize, your mileage may vary, I wouldn't rely on it on a balloon.
[20:37] <Randomskk> I especially wouldn't rely on it in something that will be going to fairly seriously cold temperatures
[20:37] <Elmar_PD3EM> how do you mean that?
[20:38] <Randomskk> running an AVR at 16MHz on a 3v3 supply, I mean
[20:38] <nigelvh> The atmegas have a processor speed vs voltage derating curve. They're not rated to run at 16MHz at 3.3V. However, some will do so. However, when parts get cold, they can have a harder time working
[20:38] <Elmar_PD3EM> ok Randomskk
[20:39] <Randomskk> nigelvh explains it better ^
[20:39] <Elmar_PD3EM> thanks
[20:39] <Laurenceb_> the curve says ~12MHz at 3.3v
[20:39] <Upu> you can pull the chip out of your Arduino and make it on a breadboard with a 3.3V regulator and a 8Mhz crystal
[20:39] <Upu> its quite easy
[20:40] <Upu> http://itp.nyu.edu/physcomp/Tutorials/ArduinoBreadboard
[20:40] <Elmar_PD3EM> thanks Upu will lokk into that
[20:40] <Elmar_PD3EM> look*
[20:40] <Upu> http://www.sparkfun.com/products/8508
[20:40] <Upu> useful
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[20:41] <nigelvh> If you do so, make sure that your arduino program is configured for 8MHz, otherwise it will compile assuming 16MHz and things will run funny.
[20:41] <Upu> oh yes sorry install the bootloader for the Arduino Pro 328 8Mhz 3.3v
[20:42] <Upu> thats all my boards are at their core, Arduino Pro 328
[20:42] <Elmar_PD3EM> funny = long delay();-)
[20:42] <nigelvh> and serial not working properly
[20:42] <fsphil> mess with baud rates too
[20:42] <Upu> http://allaboutee.com/2011/05/11/how-to-program-an-avr-microcontroller/
[20:42] <Upu> that might help too
[20:42] <daveake> And if you're setting up a timer (e.g. for rtty interrupts) it'll need different values
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[20:43] <nigelvh> Also, I second Upu in that most of my boards are based around an arduino compatible chip, either the 328 or the 1280.
[20:43] <Elmar_PD3EM> thats what I meant with the delay() ;-)
[20:43] <Elmar_PD3EM> learning a lot now in a short time
[20:44] <nigelvh> Well you've got about 5 people all spouting things at you...
[20:44] <nigelvh> Myself included.
[20:44] <Upu> yeah its information overload sometimes
[20:44] <Upu> took me a year Elmar so no rush :)
[20:44] <fsphil> you'll be skipping the bootloader and flashing directly in no time :)
[20:44] <Laurenceb_> http://ukhas.org.uk/_media/projects:imgp0066.jpg
[20:44] <Elmar_PD3EM> and getting late as well... have some links now to read tomorrow
[20:44] <Laurenceb_> ^one of my first avr boards :P
[20:45] <Upu> just step back and go make an Arduino on a breadboard
[20:45] <Upu> wtf is that Laurenceb ? :)
[20:45] <nigelvh> That is a beautiful pile of horribleness
[20:45] <Laurenceb_> bottom side of atmega breakout
[20:45] <Upu> quitge amazing :)
[20:45] <fsphil> did it work? :)
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[20:45] <Laurenceb_> yep
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[20:46] <daveake> should be imgp666.jpg :)
[20:46] <Randomskk> heh stripboard is magical
[20:47] <nigelvh> I've been really enjoying being able to etch single layer boards at home
[20:47] <Randomskk> yea
[20:47] <Randomskk> that said
[20:47] <nigelvh> Screw stripboard.
[20:47] <Randomskk> I dunno
[20:47] <fsphil> me too, although my bench didn't enjoy it as much
[20:47] <navrac> ozzie2 has stripboard in it - couldnt be bothered to make a pcb this time
[20:47] <Randomskk> these days I just get PCBs made up professionally
[20:47] <Upu> who suggested a Radio catergory on the shop sorry can't remember but its done thanks
[20:47] <Randomskk> it's really cheap and really fast
[20:47] <Randomskk> so, meh
[20:47] <Upu> Same here Randomskk
[20:48] <Randomskk> which means if I just want to prototype a thing I often end up back on stripboard. it's kinda handy.
[20:48] <nigelvh> For two layer or more I'll send it out, but for a single layer I can do it out in the shed within an hour.
[20:48] <Elmar_PD3EM> so, thanks all!! Need to go now as it's getting late and need to get up early
[20:48] <navrac> since the flights on sunday and I only did the design this afternoon there wasnt a lot of choice
[20:48] <chris_99> anyone know what the cheapest GPS module for flights is?
[20:48] <Elmar_PD3EM> good night and CUL
[20:48] <Upu> nn Elmar
[20:48] <nigelvh> Evening
[20:48] <fsphil> nighters Elmar_PD3EM
[20:48] <navrac> page upu ! another gps request
[20:48] <Upu> lol
[20:49] <Elmar_PD3EM> 73
[20:49] <Upu> well in fairness you can pick up Lassens on Ebay for £10 a piece
[20:49] <chris_99> wow!
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[20:49] <Upu> or check these : http://ava.upuaut.net/store/index.php?route=product/category&path=59_60 you will get 10% off those prices - thats my store so excuse the advertising
[20:50] <Upu> Lassens need a small connector I believe
[20:50] <daveake> yes, and antenna
[20:50] <Upu> yep so probably not much in it
[20:50] <chris_99> cheers, that looks very useful Upu
[20:50] <Upu> the uBLOX (thats U for Upu) are a better smaller chip
[20:50] <daveake> Connector £2-£3 antenna about £10 I think
[20:51] <Upu> should called u^2Blox
[20:51] <Upu> be
[20:51] <chris_99> is that rs-232 Upu?
[20:51] <Upu> which one the ones on the shop ?
[20:52] <Upu> 3.3v serial
[20:52] <chris_99> yeah in your shop
[20:52] <chris_99> ah, so i can attach to a PIC easily right?
[20:52] <Upu> if its a 3.3v one yes no problems
[20:52] <Upu> 9600 baud by default
[20:53] <Upu> if you're not bothered about the weight the Sarantel based board is more sensitive
[20:53] <Upu> if you do decide to purchase anything when you get to the check out apply coupon and put UKHAS in
[20:53] <Upu> if you want to buy any NTX2's speak to me first
[20:54] <Upu> btw great write up daveake
[20:54] <daveake> tvm :)
[20:55] <griffonbot> @AnthonyStirk: Great write up and pictures of tis weekends balloon launches http://t.co/uIAC5d8X #ukhas [http://twitter.com/AnthonyStirk/status/187282085940174849]
[20:55] <daveake> I've put all the other photos onto your SD card and that'll be in the post back to you tomorrow
[20:55] <Upu> ok thanks :)
[20:56] <Upu> http://alerte-radiosondes.blogspot.co.uk/ seems to have copied all the launch data from the UKHAS wiki, great site
[20:57] <daveake> Heard anything more from RM?
[20:57] <Upu> RM ?
[20:58] <daveake> Radiometrix
[20:58] <Upu> no
[20:58] <Upu> said that lady could contact either one of us if needed
[20:59] <daveake> yeah, not heard here
[21:00] <Upu> QSL cards should be here tomorrow
[21:00] <daveake> cool
[21:00] <Upu> I'll dish them out and send you a few if you want to distribute some
[21:01] <Upu> did you know those two girls who "helped" out ?
[21:01] <eroomde> i was wondering that too
[21:01] <daveake> Julie knows where they live, she thinks
[21:02] <Upu> might be worth sticking a QSL card through the letter box with a link to your blog on it
[21:02] <daveake> They can run my PR and media management next time :)
[21:02] <Upu> lol
[21:02] <Upu> "over excitable no concept of danger PR limited"
[21:02] <daveake> lol
[21:03] <daveake> "We laugh in the face of hydrogen"
[21:03] <Upu> lol
[21:03] <fsphil> H2? FU!
[21:03] <Randomskk> did they see if it made their voice squeaky?
[21:03] <eroomde> the one with the ds stood infront of my car as i tried to leave
[21:03] <eroomde> insisted she take a picture of me on my ds
[21:03] <eroomde> her ds*
[21:03] <Randomskk> eroomde: she didn't want you to gooooo
[21:03] <eroomde> then wanted to use my ipad
[21:03] <Upu> lol they did seem impressed with you :)
[21:04] <daveake> It's the sandals
[21:04] <Randomskk> or the shorts?
[21:04] <Upu> must be
[21:04] <Upu> but in all seriousness I really hope they go back and tell their science teacher about it
[21:05] <Upu> might actually learn something useful
[21:05] <eroomde> yeah indeed
[21:05] <daveake> yep
[21:05] <eroomde> it was pretty well documented by them
[21:05] <Upu> think it was your back side getting documented Ed :)
[21:05] <daveake> LMAO
[21:06] <daveake> they could probably do a better write-up than our local rag did last time
[21:06] <fsphil> Ed got a fan club?
[21:07] <Upu> seemed that way , anyway I need to go take the dog out
[21:07] <Upu> the dog who is currently nice and warm and is going to stand by the back door and just look at me like I'm dumb when I open the door
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[21:07] <Lunar_Lander> hello
[21:07] <Upu> as if to say "You want me to go out in that ?"
[21:08] <daveake> cold up there?
[21:08] <Upu> hi Lunar_Lander
[21:08] <Upu> snowing
[21:08] <daveake> nice
[21:08] <Upu> ok afk
[21:08] <fsphil> we've having a bad frost tonight, -2c
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[21:08] <fsphil> plants are not going to like it
[21:10] <nigelvh> I'm sorry Lunar, was it you I was helping with the HX1?
[21:10] <Lunar_Lander> hi Upu
[21:10] <Lunar_Lander> snow?!
[21:10] <LazyLeopard> Ho hum. Raining here for the first time in the best part of a month.
[21:10] gonzo__ (~gonzo@ joined #highaltitude.
[21:10] <Lunar_Lander> nigelvh, hello
[21:10] <Lunar_Lander> no, I wasn't working on a HX1
[21:10] <nigelvh> Damn
[21:10] <Lunar_Lander> nosebleedkt maybe?
[21:11] gonzo_ (~gonzo@ left irc: Read error: No route to host
[21:11] <nigelvh> I've got a horrible memory for names and can't recall who I was helping
[21:11] <nigelvh> Wasn't nosebleed
[21:12] <nigelvh> I think he was down in texas.
[21:12] <Lunar_Lander> ah
[21:12] <nigelvh> I'm really terrible at this.
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[21:14] <nigelvh> Oh well. I'll catch him login here sometime and recognize the name.
[21:15] <eroomde> lunar_nose_leopard i think it was
[21:15] <nigelvh> Exactly
[21:16] <daveake> MLow was it?
[21:16] <nigelvh> That sounds like it
[21:16] <nigelvh> Yeah
[21:16] <nigelvh> Thanks daveake!
[21:16] <daveake> He had some HX1 strangeness and ISTR was in Texas
[21:17] <nigelvh> Yeah
[21:17] <nigelvh> Anyway, I was going to let him know I figured out what our issue is/was
[21:17] <daveake> and his name came up when I googled highaltitude / hx1 / nigelvh for you just now :)
[21:17] <Lunar_Lander> XD!
[21:17] <Lunar_Lander> hi daveake
[21:17] <Lunar_Lander> I took the time to look at your website again
[21:17] <daveake> oh dear
[21:18] <Lunar_Lander> interesting progress on the car display and Cloud IV
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[21:18] <daveake> yeah, enjoyed those
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[21:20] <Lunar_Lander> I got a stupid question
[21:21] <Lunar_Lander> what are the two circles on the car display?
[21:21] <nigelvh> Shapes
[21:21] <nigelvh> Commonly known as circles
[21:21] <daveake> top is direction to payload; bottom is direction it's heading in
[21:22] <Lunar_Lander> ah, thanks
[21:23] <fsphil> I've been wondering that nigelvh
[21:23] <Lunar_Lander> we had some students from a british Grammar school at our school when I was in grade
[21:23] <Lunar_Lander> let me think
[21:23] <Lunar_Lander> was it grade 8?
[21:23] <Lunar_Lander> no, 10
[21:23] <nigelvh> Glad I could help fsphil
[21:23] <Lunar_Lander> and the one guy was drawing different shapes and said "these are all called Polygons"
[21:23] <nigelvh> There are many other kinds of shapes too
[21:23] <Upu> damn its nasty out there , blizzarding can hardly open your eyes when you're walking into the wind
[21:23] <fsphil> there's more than one?
[21:24] <fsphil> wanna swap Upu?
[21:24] <nigelvh> Yep. Squares, circles, triangles, rhombuses (rhombi?)
[21:24] <Upu> its not nice fsphil :)
[21:24] <kokey> cool, seems like I found an rtl-sdr compatible device on ebay by a UK seller
[21:24] <fsphil> long as the dog came back with you
[21:25] <Upu> yeah I was right though when we opened the back door and it was like Antartica Condition 1 he just look at me
[21:26] <kokey> now I just need a linux computer of sorts, or make a mission to get Xcode etc. sorted on my mac again
[21:26] <nigelvh> My dog does that too. "Are you stupid?"
[21:26] <fsphil> I'm not sure my dog would care
[21:27] <fsphil> he seems immune to rain and snow
[21:27] <fsphil> oblivious even
[21:27] <fsphil> only weather he doesn't like is wind
[21:27] <Lunar_Lander> does he have a red scanning light on his head and can he talk and so on?
[21:27] <Lunar_Lander> XD
[21:28] <nigelvh> First robots, then people, then dogs! What's next?
[21:28] <Lunar_Lander> DeLorean
[21:28] <Lunar_Lander> or KITT
[21:29] <daveake> http://www.reconnections.net/difference_cats_dogs.htm
[21:29] <nigelvh> So they're going to turn KITT into a cylon?
[21:30] <fsphil> actually I think michael knight was a cylon too
[21:31] <Lunar_Lander> XD
[21:31] <Lunar_Lander> and Mike Traceur?
[21:31] <Lunar_Lander> (from Knight Rider 2008)
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[21:33] <fsphil> never watched tat
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[21:33] <fsphil> I taut I taw a puddy cat
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[21:34] <Lunar_Lander> it features a 2008 Shelby Ford Mustang GT500KR
[21:35] <Lunar_Lander> but the most stupid idea was that the car could transform into other forms, like a van or a pickup
[21:35] <fsphil> ah I seen a clip of that
[21:36] <nigelvh> Because KITT was totally a transformer. Michael Bay must have directed it...
[21:36] <fsphil> not enough explosions
[21:36] <fsphil> although the plot was about his level :)
[21:37] <Lunar_Lander> yeah
[21:37] <fsphil> I see he's doing a mutant turtles film. *sighs*
[21:37] <Lunar_Lander> nigelvh, did you see the pilot movie too?
[21:37] <Lunar_Lander> I liked that one better
[21:37] <nigelvh> No, i didn't. I don't watch many films
[21:37] <Lunar_Lander> KITT was able to shape the outer hull, take on other colors
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[21:38] <Lunar_Lander> and transform between the Mustang GT and the GT500KR form
[21:38] <nigelvh> Except pixar ones. I HEART PIXAR.
[21:38] <Lunar_Lander> looked much more realistic than the transformation stuff
[21:39] <fsphil> pixar haven't made a bad movie yet
[21:39] <nigelvh> Exactly
[21:39] <Laurenceb_> anyone here used qml?
[21:39] <fsphil> although being owned by disney, I do worry
[21:39] <Laurenceb_> it looks... interesting
[21:39] <nigelvh> So do i
[21:39] <fsphil> I wish pixar had bought disney, and not the other way around
[21:39] <nigelvh> The whole toy story 3 business. I was totally convinced that disney was milking it.
[21:39] <Lunar_Lander> btw, on easter sunday, Avatar will air on free TV the first time here
[21:39] <nigelvh> Perhaps they were, but pixar did a good job
[21:40] <fsphil> I've not seen ts3 yet
[21:40] <Laurenceb_> why would i want to watch avatar?
[21:40] <nigelvh> The girl has apparently decided that when we get married we're having a Wall-E wedding cake
[21:40] <Laurenceb_> "The girl" ?!
[21:41] <Laurenceb_> thats one way to put it
[21:41] <NigeyS> Laurenceb: i hope you didnt need the antenna and driver disc for winblows for that dongle ?
[21:41] <Laurenceb_> nope its ok thanks :P
[21:41] <LazyLeopard> There are movies one watches on long-haul flights...
[21:41] <NigeyS> phew lol
[21:41] <nigelvh> Yes, I generally avoid saying peoples names (besides my own) online
[21:41] <Lunar_Lander> yeah
[21:41] <Laurenceb_> you could say girlfriend
[21:41] <Lunar_Lander> you can refer to me as Doc Brown
[21:41] <Lunar_Lander> XD
[21:41] <nigelvh> HAHAHAHA
[21:41] <fsphil> marty mclander
[21:41] <nigelvh> Emmet
[21:41] <Lunar_Lander> xD
[21:42] <Laurenceb_> otherwise it sounds like she is some of your property XD
[21:42] <Lunar_Lander> but what was the other movie with Emmett again
[21:42] <Lunar_Lander> that one blonde movie
[21:42] <Randomskk> Laurenceb_: maybe you're just not up to date with the hip slang
[21:42] <Lunar_Lander> with reese witherspoon or so
[21:42] <Laurenceb_> lol
[21:42] <Lunar_Lander> where she was so stupid
[21:42] <Randomskk> I hear "the boy" all the time for boyfriends
[21:42] <Laurenceb_> must be cuz im northern
[21:42] <nigelvh> Yeah, and girlfriend is long and harder to spell
[21:42] <Laurenceb_> now im going down my coalmine
[21:42] <Lunar_Lander> minecraft?
[21:43] <Randomskk> it's grim up north :|
[21:43] <Laurenceb_> http://en.wikipedia.org/wiki/UK_miners%27_strike_%281984%E2%80%931985%29
[21:43] <Lunar_Lander> oh
[21:43] <Randomskk> Lunar_Lander: in the UK, the coal mines are up north :P
[21:43] <Randomskk> or in wales I guess
[21:43] <Lunar_Lander> ah
[21:43] <Lunar_Lander> in Cumbria?
[21:43] <Randomskk> and by UK I mean england
[21:44] <LazyLeopard> There used to be some in Kent...
[21:44] <fsphil> lol
[21:44] <Randomskk> I guess
[21:44] <fsphil> the american definition of the uk there Randomskk
[21:44] <Randomskk> I suppose it's mostly that people up north were mining? I dunno
[21:44] <nigelvh> I grew up in a small coal mining town (or what was a coal mining town)
[21:45] <BrainDamage> not a small coal mine?
[21:45] <nigelvh> Nope
[21:45] <fsphil> could be worse, you could be in a small miming town
[21:45] <nigelvh> That really WOULD be terrible
[21:45] <fsphil> trapped in an invisible box
[21:46] <nigelvh> I'd have to put up with Lunar driving an invisible DeLorean all the time.
[21:46] <Lunar_Lander> in Cumbria? that is northern england, right?
[21:46] <Lunar_Lander> xD
[21:48] <gonzo__> a town where they mine small coal?
[21:49] <fsphil> I love english
[21:49] <nigelvh> Compared to a monster truck, yes.
[21:49] <Lunar_Lander> XD
[21:49] <BrainDamage> I think by mine, he means planting landmines
[21:49] <Lunar_Lander> they used to show monster truck shows on the sports channel here
[21:49] <BrainDamage> to discourage miners to extract the coal
[21:49] <Lunar_Lander> I remember Bigfoot and Grave Digger
[21:50] <Lunar_Lander> Bigfoot was like my favourite because it seems to win all the time
[21:50] <nigelvh> No, they put the landmines around the entrance to discourage miners from leaving.
[21:50] <gonzo__> I use to go mining. That mine, this is mine......
[21:51] <Lunar_Lander> do they still do these competition?
[21:51] <Lunar_Lander> I mean with jumping rows of junk cars and stuff
[21:51] <fsphil> gonzo__, Cat, is that you?
[21:51] <nigelvh> LOL
[21:52] <fsphil> http://www.youtube.com/watch?v=Q54lVO7elt0
[21:53] <nigelvh> That was a great book, and an interesting show.
[21:54] <fsphil> I forgot about the books
[21:54] <fsphil> have them in a drawer somewhere
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[21:55] <nigelvh> And Lunar, yes, they still have monster truck rallys
[21:55] <Lunar_Lander> cool!
[21:56] <nigelvh> rallies*
[21:56] <nigelvh> They visit Tacoma (near here) relatively frequently.
[21:56] <nigelvh> Hear about it on the radio
[21:57] <nigelvh> Though I've never personally been to one.
[21:57] <Lunar_Lander> yea
[21:57] <fsphil> americans do seem to be able to do excitement better than us
[21:57] <Lunar_Lander> and is Bigfoot still there?
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[21:59] <nigelvh> I don't know, but I would assume so. BigFoot is a big name in monster trucks
[21:59] <nigelvh> http://www.bigfoot4x4.com/
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[22:04] <Lunar_Lander> yeah!
[22:04] <Lunar_Lander> that one I meant
[22:04] <Lunar_Lander> there was one model with double tires that raced one of those wheel ships
[22:06] <nigelvh> You're an interesting dude there Lunar. Back to the future, cylons, and monster trucks.
[22:07] <Lunar_Lander> and knight rider, balloons, rockets, physics
[22:07] <Lunar_Lander> :)
[22:07] <nigelvh> Yes
[22:09] <fsphil> is there anything on TV you don't like?
[22:10] <Lunar_Lander> yeah when they make fun of overweight or disabled people
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[22:13] <fsphil> that's sadly quite a lot of it
[22:14] <Lunar_Lander> yea
[22:14] <Lunar_Lander> do they have shit like that on ITV?
[22:14] <nigelvh> ITV?
[22:15] <Lunar_Lander> yeah, you see
[22:15] <Lunar_Lander> BBC is public
[22:15] <Lunar_Lander> ITV is private
[22:15] <nigelvh> I see.
[22:15] <fsphil> not sure, don't really watch itv
[22:15] <nigelvh> I don't watch much tv. Though i do watch some shows on the internetz.
[22:16] <nigelvh> Or I'll ask "the girl" to tivo it for me.
[22:16] <fsphil> all the shows I watched ended or where cancelled
[22:16] <Lunar_Lander> there is a show like "Who wants to marry my son?"
[22:16] <nigelvh> "reality tv" which is nothing like reality.
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[22:17] <Lunar_Lander> yeah
[22:18] <Lunar_Lander> and here in germany they actually have some men on that show who seem to be handicapped
[22:18] <Lunar_Lander> and that is not OK I think
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[22:29] <Lunar_Lander> what do you think?
[22:33] <nigelvh> Who you asking?
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[22:33] <Lunar_Lander> everyone
[22:33] <nigelvh> I see.
[22:34] <gonzo__> I've not had a tv for years, so can't comment
[22:34] <Lunar_Lander> yea
[22:34] <Lunar_Lander> but BBC seems to be good
[22:34] <Lunar_Lander> with BRIAN COX
[22:34] <Lunar_Lander> xD
[22:34] <nigelvh> Well, not knowing their specific situation I can't speak much, but to generalize, I'm not keen on the idea of exploitation in that regard, but if they can make their own decisions, then it's their choice.
[22:34] <Lunar_Lander> yea
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[22:35] <gonzo__> I watch the very occasional prog on the bbc iplayer, but that's the limit of it
[22:35] <Lunar_Lander> one problem is though in germany at least they are been given contracts which basically say that the TV team has full power over them and they may not speak about the production process
[22:35] <Lunar_Lander> and some people are not able to comprehend the contracts
[22:35] <nigelvh> That still comes down to their decision to sign it though.
[22:36] <nigelvh> Not that it's right, but that's what it is.
[22:36] <Lunar_Lander> yes
[22:36] <gonzo__> that's the sole purpose of contracts isn't it?
[22:37] <gonzo__> like the sole purpose of lawers is to perpetuate the existance of lawers
[22:38] <nigelvh> Also, I'm not a lawyer, nor am I in germany, nor do I understand german law, but at least here you can't sign away your civil rights in a contract. So that's something.
[22:38] <Lunar_Lander> yeah
[22:38] <Lunar_Lander> civil rights aren't respected by TV here
[22:38] <nigelvh> Some might think that civil rights aren't respected by the government here.
[22:40] <gonzo__> careful what you say, as they want gchq to have the right to monitor all communications now as a matter of course
[22:40] <gonzo__> (no that anyone doubts that the can do that anyway)
[22:41] <nigelvh> Well, I assume you're talking about the recent news from the UK, however, I'm in the US.
[22:41] <Lunar_Lander> Some say he drinks petrol for breakfast...here is THE STIG!
[22:41] <Lunar_Lander> XD
[22:41] <gonzo__> I lose track of where people are
[22:42] <nigelvh> Happens
[22:42] <gonzo__> all .gov are the same. Just some are more open about it than others
[22:42] <nigelvh> Though, we're both dealing with increased surveillance states.
[22:42] <Lunar_Lander> three
[22:42] <Lunar_Lander> USA, UK, Germany
[22:43] <nigelvh> Terrorists, Pirates and Pedophiles oh my!
[22:43] <gonzo__> And you're not in kansas any more toto
[22:43] <Lunar_Lander> kansas? toto?
[22:44] <nigelvh> From the wizard of oz. Both were modified quotes.
[22:44] <Lunar_Lander> toto is a gambling game here which is based on how soccer games end
[22:44] <gonzo__> terrorist plots everywhere. Well after the soviet block collapsed, they had to invent a new threat to blame all the unpopulat measures on
[22:44] <nigelvh> Yeah, well they've always had child porn for that, then 9/11 happend and it's all terrorists now.
[22:45] <gonzo__> ah we have the same sort of gamble, will the game end in a riot
[22:45] <Lunar_Lander> yeah but those are bad topics
[22:45] <Lunar_Lander> I hope the world will get better somehow
[22:46] <gonzo__> only if the human race can civilise itself
[22:46] <nigelvh> I certainly do too, and I certainly would agree that both of which are bad. However, the government goes too far in messing with our rights in the pursuit of the 0.00000001% who do those things.
[22:47] <Lunar_Lander> yea
[22:47] <gonzo__> They have to be seen to be doing something, so go over board and punish the 99% of those who are law abiding
[22:48] <nigelvh> Or all the infighting. For instance a while back here in the US about the whole debt ceiling thing.
[22:48] <gonzo__> it's easier to legislate against the law abiding. The criminals, well, not being law abiding sort of goes with the job description
[22:49] <nigelvh> I hate to say it, but I would not have been surprised if I heard on the news that someone tried to attack congressmembers over that whole deal.
[22:49] <gonzo__> and if you can make so many laws that you criminalise ordiary people, wow that really gets your crime figures looking healthy
[22:50] <nigelvh> Ah the sad realities of life.
[22:50] <gonzo__> it's been said often that in the UK, the only person to enter the house of commons with honest intent, was Guy Fawkes
[22:50] <Lunar_Lander> wait
[22:51] <Lunar_Lander> that guy was for real?
[22:51] <Lunar_Lander> I always thought he was just fictional
[22:51] <nigelvh> http://en.wikipedia.org/wiki/Guy_Fawkes
[22:51] <gonzo__> Nope, it was a plot some time around 1600. He was just the one who was caught.
[22:52] <Lunar_Lander> ahh wait was that the treason guy?
[22:52] <nigelvh> Yes
[22:52] <Lunar_Lander> ahh
[22:52] <Lunar_Lander> now I remember
[22:52] <Lunar_Lander> I heard of him more than 10 years ago
[22:53] <nigelvh> Anyway, it's time for me to go home. Have fun all.
[22:53] <Lunar_Lander> ok, cu
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[22:54] <gonzo__> It was a big political plot to kill the king at the time and his supporters, by some faction in the government.
[22:54] <Lunar_Lander> yeah
[22:54] <gonzo__> Fawkes was just the man hired to light the fuse
[22:54] <Lunar_Lander> with the gunpowder, treason and plot
[22:54] <Lunar_Lander> there is a saying or so
[22:55] <BrainDamage> wasn't the parliament along with the king ?
[22:55] <Lunar_Lander> only the one house I think
[22:56] <BrainDamage> also, fawkes was basically a bad guy, it's hyronic how the movie completely twistes it's figure, and now it's in popular culture as wrong icon for the idea :/
[22:57] <Lunar_Lander> yea
[23:02] <gonzo__> turning into a pumpkin here. (And without indicating!)
[23:02] <gonzo__> gn
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[23:04] <fsphil> talk about a tangent :)
[23:04] <Lunar_Lander> tangent?
[23:04] <Lunar_Lander> like df(x)/dx?
[23:05] <fsphil> in this context it means starting discussing one thing, but ending discussing something completely different
[23:05] <Lunar_Lander> yea
[23:09] <griffonbot> Received email: Oliver de Peyer Astrobiologist "[UKHAS] ADS-B"
[23:10] <Darkside> ugh
[23:10] <Darkside> wtf
[23:10] <Darkside> ADS-B trsansponders? really?
[23:11] <fsphil> Dan seems quite fond of that idea
[23:12] <Lunar_Lander> OHH
[23:12] <Lunar_Lander> ADS-B is bad right?
[23:12] <fsphil> well it means aircraft would see the payload on their virtual radar things
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[23:13] <fsphil> ironically I bet it's not legal to fly them
[23:13] <fsphil> without a license anyway
[23:15] <r2x0t> 1) you need licence 2) you can't build it, transmitter have to be certified, so $$$$
[23:17] <fsphil> figures
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[23:29] <Lunar_Lander> btw
[23:29] <Lunar_Lander> I got a IRFZ44N MOSFET
[23:30] <Lunar_Lander> is that good?
[23:30] <Lunar_Lander> the sparkfun one was 30A, 60V
[23:30] <Lunar_Lander> this one is 55V, 49A
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[23:35] <BrainDamage> for what pourpose?
[23:36] <Lunar_Lander> for my cutdown
[23:36] <BrainDamage> should be fine, even better, can you supply the voltage at which RDSon is defined?
[23:36] <BrainDamage> otherwise you'll need a charge pump
[23:41] <Lunar_Lander> wait
[23:41] <schofieldau> hey Lunar
[23:41] <Lunar_Lander> hi schofieldau
[23:42] <Lunar_Lander> BrainDamage, which number do you need?
[23:42] <Lunar_Lander> ah
[23:42] <Lunar_Lander> there is a maximum RDSon given
[23:42] <Lunar_Lander> Conditions: VGS= 10 V
[23:42] <Lunar_Lander> ID= 25A
[23:43] <BrainDamage> maximum? not minimum?
[23:43] <Lunar_Lander> only max
[23:43] <Lunar_Lander> wait
[23:43] <BrainDamage> anyway, it seems yuou need to provide 10V or so between gate and source to get it full on
[23:44] <Lunar_Lander> https://ec.irf.com/v6/en/US/adirect/ir?cmd=catProductDetailFrame&productID=IRFZ44N
[23:44] <BrainDamage> if your circuit cannot provide that voltage normally, you'll have to use a contraption called charge pump, capable to boost the voltage
[23:44] <Lunar_Lander> OK
[23:44] <Lunar_Lander> the idea was to connect a battery
[23:44] <Lunar_Lander> and the arduino would control the GATE
[23:45] <Lunar_Lander> and on the other side would be the cutdown wire
[23:45] <BrainDamage> you could use a battery to level shift the arduino's signal to the gate
[23:45] <BrainDamage> otherwise, you need a charge pump or a 10V supply
[23:46] <Lunar_Lander> so the Gate needs those 10V?
[23:46] <BrainDamage> to be fully on yes
[23:46] <Lunar_Lander> oh
[23:47] <BrainDamage> you can buy "logic level" mosfets
[23:47] <BrainDamage> those need only 5V to be fully on
[23:47] <BrainDamage> so they can be hooked directly to microcontrollers
[23:47] <Lunar_Lander> hm
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[23:47] <Lunar_Lander> and what about my 3.3V arduino?
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[23:47] <BrainDamage> 3.3V is probably a bit on the low side for that :/
[23:47] <BrainDamage> you're best off using a charge pump
[23:48] <Lunar_Lander> yea
[23:48] <Randomskk> you can buy 3v3 MOSFETs
[23:48] <Lunar_Lander> what would I need to buy as a charge pump?
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[23:48] <Randomskk> I would just buy a 3v3 mosfet if I were you
[23:49] <NigeyS> Randomskk: $$SWIFT,APRS GEOFENCE ACTIVE
[23:49] <NigeyS> \o/
[23:49] <Randomskk> :D
[23:49] <Lunar_Lander> XD
[23:49] <NigeyS> boltcutters anyone? lol
[23:49] <Lunar_Lander> ok Randomskk
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[23:49] <Lunar_Lander> I first read GEODEFENSE
[23:49] <BrainDamage> oh, I didn't know they made 3.3V logic level mosfets nowdays
[23:49] <BrainDamage> good to know
[23:50] <BrainDamage> yeah, just buy them if available
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[23:51] <Lunar_Lander> reason I bought this one was that I got it at my local store
[23:51] <Lunar_Lander> I was looking on the internet too of course
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[23:55] <Lunar_Lander> please say something
[23:55] <natrium42> something
[23:55] <Lunar_Lander> otherwise I need to hit me on the head
[23:55] <Lunar_Lander> XD
[23:57] <BrainDamage> Lunar_Lander: remember to check the voltage for which RDSon is defined, that's the real "on" voltage, the Vgsth is the one they are barely on
[23:57] <Lunar_Lander> let me check
[23:58] <Lunar_Lander> Min 2 V, Max 4 C
[23:58] <Lunar_Lander> *V
[23:58] <BrainDamage> for the one you linked me, it's 10V, if you're gonna buy others, do that check
[23:58] <Lunar_Lander> wait
[23:59] <Lunar_Lander> wait one moment
[23:59] <Lunar_Lander> did you download the PDF in the link?
[00:00] --- Wed Apr 4 2012