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[03:27] <SamSilver> bbl
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[05:41] <SamSilver> congrats daveake
[05:44] <daveake> Thanks :-)
[05:44] <daveake> The HAB landed but I'm still high!
[05:45] <daveake> Just about to download the log from the flight computer
[05:45] <daveake> About 600g of the 1kg balloon is still attached, and wrapped itself around the parachute cords.
[05:46] <Darkside> so you recovered the payload fine?
[05:47] <daveake> Yep :-)
[05:47] <daveake> We were a bit late heading out, plus it dropped from the sky rather quickly. We lost the data at around 4000 metres IIRC
[05:48] <daveake> Couldn't get 3G either for a while. We were heading for a hill near where we thought it was, then got 3G and went online for an updated position.
[05:48] <daveake> So we headed there and for about 1 second I heard a blip on the receiver as we were driving along.
[05:50] <daveake> So we pulled over sharpish and I got the Yagi out for a direction fix. It was weak but we decoded the signal fine. All the packets had the same GPS including timestamp, so the GPS had failed by then.
[05:50] <daveake> Then we headed for that location and had a nice strong signal via the car mag-mount aerial
[05:50] <daveake> Pulled up into a small layby then walked down the hill towards the GPS point and the signal
[05:50] <Darkside> so you did some DFing? :P
[05:51] <daveake> Wossat?
[05:51] <Darkside> direction finding
[05:51] <Darkside> i.e. usong a yagi to get bearings to a transmitter
[05:51] <daveake> Does it mean "Waving a Yagi around in the air"?
[05:51] <daveake> Ah
[05:51] <daveake> Yes, lots LOL
[05:51] <Darkside> always fun :-)
[05:52] <daveake> By now we could hardly see the sky for trees, especially on the left of us which was where the signal seemed to be strongest
[05:52] <Darkside> i do lots of that :-)
[05:52] <Darkside> heh
[05:52] <daveake> It was!
[05:52] <daveake> :-)
[05:52] <daveake> I was surprised just how good that worked out
[05:52] <daveake> Signal got stronger, and obviously on our left, then it was clear it was behind us
[05:53] <daveake> The area was very rural and basically the edge of a forest, but there were some houses and the owner was working in his garden
[05:54] <daveake> So I walked over and explained why 7 geeks had suddenly turned up showing a great deal of interest in his garden!
[05:54] <daveake> After a while he was very helpful as he understood what we were doing
[05:54] <daveake> So I was DFing :-), and then I thought I could hear another tone.
[05:55] <daveake> So I switched the receiver off and we could *just* hear the whistle from the payload bleeper
[05:55] <daveake> The owner, being of generous years, couldn't hear the high pitch but we all could
[05:56] <daveake> So we wandered around using our ears to DF then one of my helpers spotted it by a bush in next door's garden
[05:56] <daveake> Can't tell you how elated I was at this point! And we were so lucky it didn't land in a tree.
[05:56] <Darkside> nice :-)
[05:57] <daveake> Looking at the video I'm pretty sure it was slowed down (fortunately as it turned out) by a tree on the way down
[05:58] <daveake> The impact stopped the video and rebooted the Arduino, which very fortunately started up again
[05:58] <daveake> (the packet number was way too low)
[05:58] <Darkside> gonna upload the video?
[05:58] <daveake> 14GB ... might take a while ;-)
[05:58] <Darkside> lol
[05:58] <Darkside> well cut it down first :-)
[05:59] <daveake> Yes, I'll upload some sections. A friend does some editing and has the SD card so he can put together a couple of videos for me
[06:01] <daveake> Is there a record for "highest percentage of balloon still attached on landing"? 'cos I think I'm a contender LOL
[06:02] <Darkside> unclan burst :-)
[06:02] <Darkside> unclean*
[06:03] <daveake> The balloon had visible darker patches in it. Dunno if that's normal.
[06:06] <daveake> Downloading the Arduino's log now (GPS and other parameters) :-)
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[06:49] <fsphil> you always remember your first launch :)
[07:07] Action: hibby swears
[07:07] <hibby> it's far too late at night to be playing with source code
[07:16] <SamSilver> flush
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[09:23] <Upu> Woot
[09:23] <Upu> Radiometrix have agreed to supply some NTX2's for the Conference
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[09:40] <WillDuckworth> good stuff Upu
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[10:01] <Upu> hey jgrahamc http://www.radiometrix.com/university-student-projects
[10:01] <Upu> you're on their site :)
[10:01] <jgrahamc> Yes.
[10:01] <jgrahamc> Not that they've sent me any free stuff :-)
[10:01] <fsphil> they've bound to have noticed their radios are popular for hab flights
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[10:03] <fsphil> yikes.. the weechat colour scheme is harsh
[10:03] <Upu> "Thank you for your email and we at Radiometrix are delighted with your UK High Altitude Society and world wide interest in our NTX2 TX modules"
[10:04] <fsphil> coolies
[10:04] <Upu> They can't help but notice if yuo type NTX2 into Google half the links are to HAB projects :)
[10:04] <Upu> Going to sent us some modules for the conference
[10:04] <Upu> send
[10:05] <fsphil> excellent
[10:13] <fsphil> I should google before naming projects
[10:21] <Upu> so should jgrahamc :)
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[10:23] <Upu> whats up with Hadie anyway ?
[10:24] <fsphil> ssdv
[10:25] <fsphil> it has other meanins
[10:25] <fsphil> meanings
[10:25] <Upu> Société Suisse de Dermatologie et Vénéréologie ? :)
[10:25] <daveake> LOL
[10:27] <Upu> Swiss Society for Itchy Bits ?
[10:32] <fsphil> lol
[10:39] <Upu> Awesome name for a payload $$ITCHYBITS
[10:42] <daveake> Just going thru the video from yesterday. Spotted a jet flying along. Quite small because it's so far below LOL
[10:42] <Upu> sounds interesting
[10:43] <daveake> I got 4 calls on the Saturday re the NOTAM, nothing on the Sunday. We heard one light aircraft and one heli fly nearby during the launch period.
[10:46] <fsphil> daveake: weird that -- all three of the launches I've been to there was a light aircraft flying overhead
[10:46] <fsphil> and our launch site is nowhere near an airport
[10:47] <daveake> I thought the general idea was that they checked the NOTAMs and avoided the area are called to check.
[10:47] <daveake> or called
[10:48] <fsphil> I'd wondered if they where there because of the launch -- having a look
[10:48] <daveake> Possible
[10:49] <fsphil> my last notam lasted a month, and there was only one call
[10:50] <fsphil> it really is in the middle of nowhere
[10:50] <daveake> I had 5 for 4 of the days
[10:50] <daveake> :)
[10:50] <Upu> so worked out what was up with the code ?
[10:52] <daveake> Not looked yet.
[10:52] <Upu> ok
[10:52] <daveake> Originally I just sent the NMEA data through with no maths, but when the data didn't get through to spacenear.us I changed the format.
[10:53] <daveake> Last minute changes .... just say no :-)
[10:53] <fsphil> afaik spacenear.us can handle nmea-style coordinates, but it has to be setup to do so
[10:53] <daveake> Thanks VERY much those who tracked this for me. I would literally have been lost without you!
[10:54] <Upu> told you should have come here :)
[10:54] <daveake> Yeah, I thought so, but I tried things to get it to work
[10:54] <daveake> :D
[10:54] <Upu> btw Caroline Stirk on Facebook is my wifes account, I don't have one so I stole her account to join your group
[10:54] <daveake> Ah :)
[10:54] <Upu> last night it was like "Why have I joined Dave in Space?!"
[10:54] <daveake> I did wonder!
[10:54] <fsphil> lol
[10:55] <daveake> LOL
[10:55] <daveake> Because we didn't seem to get much signal from the transmitter with the payload next to me, I thought I'd broken the transmitter. So we took the box apart and checked the connections and voltages. Everything checked out OK so we put it back together. I think I must have stopped the camera script when doing this. In the panic I forgot to check it.
[10:56] <jgrahamc> You're welcome daveake. It was fun tracking from my bedroom.
[10:56] <daveake> :)
[10:56] <daveake> It was fun watching everyone but me track from my bedroom!
[10:56] <daveake> We lost the signal completely very quickly, so I assumed the Tx was in fact broken. Then I got home and saw you guys getting a signal from hundreds of miles away.
[10:57] <daveake> After a while we decided to leave, hooked up my receiver (AR8000) and magmount to the car, and got a great signal.
[10:57] <fsphil> it's one of those weird things about vertical antennas
[10:57] <jgrahamc> As soon as someone said M6ANJ is the closest I ran upstairs with the Yagi and you were coming in loud and clear
[10:57] <fsphil> they're rubbish above and beneath
[10:57] <daveake> When we got closer the balloon fell out of the sky at a fair old rate, and we lost the signal when we still had a way to go
[10:58] <daveake> Couldn't get 3G at all but that ended up being the Vodafone s/w on the netbook (rebooted and it suddenly started working)
[10:58] <daveake> So then I went online to get the last position from you guys.
[10:59] <daveake> We then headed that way but still with static coming from the receiver.
[10:59] <daveake> Then for about a second I could hear the familiar tones :-)
[10:59] <jgrahamc> Looking forward to seeing the video
[10:59] <Upu> yup
[10:59] <Upu> ok lunch time bbl
[10:59] <daveake> So we pulled over, with only static via the magmount, and I hooked up the Yagi and got a direction. Sounded weak but decoded OK
[11:00] <fsphil> getting a decode after landing is brilliant
[11:00] <fsphil> love it when that happens
[11:00] <daveake> Got there and parked, and then walked down the road waving the Yagi around to get a direction
[11:01] <daveake> Tall trees and so I aimed upwards and got a stronger signal. I didn't feel too happy at that point!
[11:01] <daveake> It was obviously in or near a particular garden, and the owner was there so I explained why 7 geeks had turned up waving aerials and making bleeping noises
[11:02] <fsphil> had he heard or seen it landing?
[11:02] <daveake> Signal seemed to be coming from a particular direction, so we walked there and then I could hear another whistle on top of the receiver bleeps
[11:02] <daveake> Nope
[11:02] <daveake> He was kinda deaf!
[11:03] <daveake> So receiver and we could all hear the whistle from the payload. Well the owner couldn't :-)
[11:03] <daveake> "receiver off" I meant
[11:04] <daveake> A few seconds later we were staring at a cube of duct tape :-). Parachute was behind and obscured by the payload and a bush. Hi-Viz tape on the box helped a lot!
[11:05] <fsphil> aye aye -- my next one is going to be bright yellow
[11:05] <fsphil> silver foil is impossible to see in a tree
[11:05] <fsphil> thought it would be shiney and easy to spot, but it just reflects its surroundings and blends in
[11:07] <daveake> Good point! Always something new to learn!
[11:08] <daveake> I learnt a LOT yesterday. Several things didn't work or as well as they could, but enough did for me to feel very pleased about the mission.
[11:08] <cuddykid> which sd card modules (use with arduino) do people use for logging?
[11:08] <cuddykid> daveake: pictures are great, congradulations!
[11:09] <daveake> Any full-size one should be OK. I just use old ones that came free with cameras :-).
[11:09] <daveake> I used a FAT library and linked with the SPI port
[11:09] <daveake> I suggest closing log files after a while then reopening or starting a new one. I lost the last block of data when the Arduino rebooted on impact
[11:10] <daveake> Next time I might use an EEPROM instead if I can find one big enough.
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[11:11] <daveake> If you don't have a spare SD card, I can send one - got several old ones and you don't need much space for GPS logs!
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[11:14] <cuddykid> daveake: cheers, got SD card, was wondering what connector or breakout board you used?
[11:14] <daveake> Didn't have one so I soldered the wires on!
[11:15] <cuddykid> oh right!! cool!
[11:15] <daveake> Oh, just spotted a frame showing 600g of burst balloon flying arounf!
[11:16] <cuddykid> lol
[11:17] <cuddykid> which vid camera did you use?
[11:17] <daveake> Kodak Zx1
[11:17] <cuddykid> nice
[11:17] <daveake> Bought it last year to video our RV road trip in Utah and Arizona
[11:17] <cuddykid> some good frames caputured
[11:17] <daveake> It doesn't like Lithiums though
[11:18] <cuddykid> oh :S
[11:18] <daveake> It obviously does a max voltage check - it powers up then flashes the battery symbol then turns off
[11:18] <daveake> I found a solution :-)
[11:18] <cuddykid> ahh
[11:19] <daveake> I measured the max voltage by powering up connected to a PSU
[11:19] <daveake> Lithiums are above the max but they drop quite quickly initially.
[11:19] <daveake> So I drop the voltage with a schottky diode. Then it powers up OK. Within seconds the Lithium voltage will drop enough that the diode can be safely shorted out. Sorted. :-)
[11:20] <daveake> I wired in a little jumper so I could short it easily.
[11:20] <cuddykid> very neat
[11:21] <fsphil> a manual vreg
[11:21] <daveake> Also ... it doesn't run quite long enough on 2 AAs, so I wired 4 together externally.
[11:21] <cuddykid> this looks ok for a connector - http://cgi.ebay.co.uk/SD-Card-Breakout-Board-SD-SPI-Mode-MCU-ARM-/110633418320?pt=LH_DefaultDomain_0&hash=item19c243fe50
[11:22] <fsphil> sparkfun have an SD breakout board
[11:22] <daveake> Looks just fine.
[11:22] <fsphil> I'm debating using an SD card on my next board
[11:22] <cuddykid> fsphil, yeah, a few bob more than this one though
[11:22] <fsphil> logs would be nice
[11:22] <cuddykid> that's what I thought
[11:23] <cuddykid> would be nice incase telemetry drops out or something
[11:23] <fsphil> yea
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[11:23] <fsphil> also could fill in gaps in any images
[11:23] <daveake> Yep. I've seen some dodgy GPS packets (probably I'm not polling the serial quickly enough) in my logs
[11:23] <cuddykid> yeah
[11:23] <daveake> 2 packets stuck together
[11:23] <daveake> Still, gives me something to do for next time :-)
[11:23] <cuddykid> indeed
[11:23] <daveake> Work kept getting in the way for this one.
[11:24] <cuddykid> need to try and connect up a570 with usb now
[11:24] <cuddykid> see if I can interrupt the script that's taking photos to take video when command is send via usb
[11:24] <cuddykid> (from arduino)
[11:24] <daveake> I didn't investigate that as I was happy just running a CHDK script
[11:25] <daveake> But one of my other projects is to do with 3D images and we will need to run multiple cameras taking shots at exactly the same time, so I'll be doing the same!
[11:26] <cuddykid> awesome
[11:27] <fsphil> wonder how hard it would be to take two images from a balloon flight, and make a 3d image
[11:28] <SpeedEvil> It's possible.
[11:28] <SpeedEvil> Pop over to #openstreetmap
[11:28] <SpeedEvil> maybe someone will have a clue there
[11:28] <SpeedEvil> on irc.oftc.net
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[11:32] <daveake> fsphil Not sure :-). At the distance, having 2 cameras in the same payload probably isn't good enough as you need some distance between them. Maybe 2 shots pointing the same way (ish) taken a couple of seconds apart. I'll have a chat with my 3D friend tomorrow :-)
[11:33] <SpeedEvil> You don't need to have the images taken at the same time for static images
[11:33] <daveake> Nope
[11:33] <fsphil> indeed
[11:33] <daveake> Correlate 2 images taken at different times. Doable.
[11:33] <fsphil> I'll have to dig out some images of the same point, the payload was moving fairly fast so there should be some perspective difference
[11:40] <jgrahamc> Would add my vote for high visibility paint/tape on HAB capsules. Worked a treat on GAGA-1
[11:41] <fsphil> would you recommend any particular kind of paint?
[11:44] <jgrahamc> http://blog.jgc.org/2010/09/gaga-1-capsule-paint-job.html
[11:46] <daveake> That's bright!
[11:46] <Laurenceb> http://static.arstechnica.com/2009/03/19/Nuclear%20Power%20Yes%20Please%20%28500x500%29.jpg
[11:46] <Laurenceb> lol
[11:47] <BrainDamage> those deterministic path coupled with awful distance proportions of the orbitals disturb me much more than the smiling core :p
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[11:49] <fsphil> it would have been a much less interesting logo if it was accurate scale :p
[11:49] <SpeedEvil> http://cgi.ebay.co.uk/Glow-dark-green-pigment-powder-20g-/280529844441?pt=UK_Crafts_Other_Crafts_EH&hash=item4150e1b8d9 too
[11:53] <fsphil> glow in the dark
[11:53] <fsphil> ooooh
[11:53] <SpeedEvil> Having said that - I'm in the middle of a project to make a better solution.
[11:53] <SpeedEvil> Couple of 1W LEDs, 150mAh cell, 20mm dia ball.
[11:54] <SpeedEvil> The LEDs turn on for 10ms/100s, 1ms/s, 10us/.1s or so
[11:54] <SpeedEvil> And has a couple of little solar cells in to charge.
[11:54] <cuddykid> time to cut the usb wire for chdk
[11:54] <SpeedEvil> It's meant for a keychain thing.
[11:54] <fsphil> I'm hoping for a night-flight soon, and I was going to have a 2W LED transmit the data as well as be a beacon
[11:55] <fsphil> doubt it would be possible to decode the data once it gets up pretty high
[11:55] <cuddykid> fsphil, that sounds very cool!
[11:55] <cuddykid> have to be clear night
[11:55] <jgrahamc> I was thinking of using the flash from a camera as a beacon
[11:55] <fsphil> yea, and that's not too often
[11:55] <fsphil> now that's an idea jgrahamc
[11:55] <Upu> I just bought one of these :
[11:55] <Upu> http://www.dealextreme.com/p/ultrafire-nh-t60-ha-ii-xm-lt60-5-mode-1200-lumen-white-led-flashlight-with-strap-1-x-18650-57005
[11:56] <Upu> has a "Hit Girl" mode on it which strobes at the same frequency as your brain and makes you want to vomit
[11:56] <jgrahamc> I have a spare camera from GAGA-1 and I was figuring that a combination of the flash circuit and a 555 timer would work
[11:56] <cuddykid> lol upu
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[11:57] <fsphil> it would need to be incredibly bright to see it at 30km :)
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[11:58] <SpeedEvil> fsphil: not
[11:58] <SpeedEvil> fsphil: A magnitude 4 star puts out a nanowatt a square meter (about)
[11:58] <SpeedEvil> A 1W LED puts out around .1W (maybe a hair more)
[11:58] <cuddykid> glad to see my usb lead has the 4 coloured wires in
[11:59] <SpeedEvil> This means that to be of equal magnitude, it can illuminate a hemisphere of 10^8m^2 in area.
[11:59] <daveake> :)
[11:59] <daveake> cuddykid the wires are ground, d+, d- and the power sense
[11:59] <SpeedEvil> Or about 2*10^8m^2 in area per steradian. Or 14km square.
[12:00] <SpeedEvil> So you can easily see it 14km away.
[12:00] <SpeedEvil> If it flashes.
[12:00] <daveake> IIRC you send 5V to the power sense, so you just connect that and ground
[12:00] <cuddykid> daveake: yeah, red & black are what I need I think
[12:00] <daveake> That would be too sensible LOL
[12:01] <SpeedEvil> Also - argh - the vendor of optical interference filters seems to have dropped off ebay
[12:01] <daveake> Got to be easier than coding a USB host in firmware LOL
[12:02] <daveake> The name CLOUD1 couldn't have been more appropriate given the amount of white stuff in the video!
[12:02] <fsphil> it's the UK, clouds are a way of life :)
[12:03] <daveake> :)
[12:03] <daveake> My wife's maiden name was Cloud. I named the balloon after her father who was very interested in both space and photography.
[12:04] <fsphil> it's an unusual surname
[12:04] <fsphil> I don't know of any at all
[12:05] <daveake> :)
[12:05] <daveake> Just about to grab a screenshot of that jet :-)
[12:07] <Darkside> oh an
[12:07] <Darkside> you photographed a jet from midair?
[12:07] <Darkside> we've heard a jet in one of our videos, bue didn't see it
[12:08] <fsphil> I got a picture of a contrail, the jet itself is too small to make out
[12:08] <daveake> Yes. Think we got 2 actually as this is in a different position to one I saw before.
[12:08] <daveake> Yeah, those jets fly so low LOL
[12:08] <daveake> Heard? Wow!
[12:09] <daveake> I had a bleeper on all the time (didn't want to make a last minute change to switch on at landing)
[12:09] <Darkside> heh
[12:09] <daveake> (just as well as the computer rebooted on landing so the logic would have failed!)
[12:09] <daveake> So if anyone knows how to apply a notch filter to the audio in a video file, let me know!
[12:10] <fsphil> did it change at all as the air thinned?
[12:10] <SpeedEvil> daveake: you mean to notch it out, or in?
[12:10] <daveake> The bleeper was deafening, so we taped it over before launch. Then forgot to remove the tape. Even so we heard the thing when looking for it.
[12:10] <daveake> Yes - got quieter
[12:11] <daveake> out
[12:11] <daveake> Want to remove that tone
[12:11] <SpeedEvil> Problematic
[12:11] <daveake> Thought so
[12:11] <SpeedEvil> It's not a simple tone, but will be harmonic rich.
[12:11] <SpeedEvil> It may rise or drop in frequency.
[12:11] <SpeedEvil> And also it'll cause gain pumping even if you can pull it complretley
[12:11] <daveake> OK
[12:14] <Laurenceb> grrr honeywell wont give me free samples :(
[12:15] <SpeedEvil> for?
[12:15] <Laurenceb> 24pc01smt pressure sensor
[12:15] <Laurenceb> its listed as sampleable on their site
[12:17] <daveake> Jet in bottom-left (you may have to squint!) ... https://www.facebook.com/photo.php?pid=7289564&l=ed17298935&id=695937653
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[12:18] <daveake> I think it's the same one I saw before ... a later frame is as I remembered the earlier one
[12:19] <Laurenceb> eww farcebook
[12:21] <daveake> I'll put a selection on my blog soon
[12:22] <Elwell> what's the cheapo GPS module du jour for HAB?
[12:23] <fsphil> I both love and hate the fsa03 -- it works well, so long as you don't look at it the wrong way
[12:24] <Laurenceb> its picky about power supply
[12:25] <fsphil> they're also really cheap
[12:26] <cuddykid> lassen works a treat
[12:27] <Elwell> picking up a new one for the car - was going to get the good ol' EM406a till I remembered I can't borrow it for HAB stuff
[12:27] <Darkside> Elwell: anything with a ublox chipset
[12:27] <Darkside> i like the D2523 modules from sparkfun
[12:28] <Darkside> wait, thats not right...
[12:28] <Darkside> wait, yes it is: http://www.sparkfun.com/products/9566
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[12:36] <Laurenceb> http://uk.farnell.com/digilent/chipkit-uno32/chipkit-uno32-development-board/dp/1893211 <-lmao
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[12:45] <jgrahamc> daveake: Love the picture of the jet. Do you know what time it was taken? You could probably correlate it with air traffic and find out the flight number.
[12:46] <daveake> It'll take a bit of work but yes I can get the time :-)
[12:47] <NigeyS> jet? where? :o
[12:47] <jgrahamc> Lovely picture from daveake https://www.facebook.com/photo.php?pid=7289564&l=ed17298935&id=695937653
[12:47] <daveake> https://www.facebook.com/photo.php?pid=7289564&l=ed17298935&id=695937653
[12:48] <jgrahamc> In some of the GAGA-1 pictures there were jets but you couldn't see them because there was no cloud cover. In daveake's picture there are clouds providing a nice background.
[12:49] <fsphil> you did well to spot it
[12:49] <NigeyS> ahh i see, pretty neat pic :D
[12:49] <daveake> The camera was rotating quite quickly and the jet appeared for just a tiny moment but caught my eye
[12:50] <daveake> My box wasn't level so the video was pointing down mostly.
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[13:01] <NigeyS> lalala morning dan
[13:02] <Dan-K2VOL> morning Nigel
[13:02] <Dan-K2VOL> got your google add
[13:02] <Dan-K2VOL> hibby, how's work going
[13:06] <NigeyS> i saw, quite like the google+ :D
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[13:15] <daveake> Got a good shot of the lump of latex that came down with the payload
[13:21] <daveake> http://dl.dropbox.com/u/368443/Capture_027.JPG
[13:21] <daveake> http://dl.dropbox.com/u/368443/Capture_033.JPG
[13:23] <LazyLeopard> Nice view of the river below in that first one. ;)
[13:23] <daveake> :)
[13:31] <fsphil> space squids
[13:34] <Dan-K2VOL> morning nigeys, fsphil
[13:36] <fsphil> g'day Dan-K2VOL
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[13:42] <Dan-K2VOL> White Star's makerfaire Detroit plans updated in blog post today: http://whitestarballoon.com/
[13:48] <fsphil> indoor hab, neat :)
[13:50] <SamSilver_> bbl
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[13:53] <hibby> Dan-K2VOL: it's not :/
[13:54] <Dan-K2VOL> oh haven't started?
[13:58] <hibby> nah, waiting on background checks :/
[14:04] <Dan-K2VOL> so are you stuck at your apartment or do they have you go in anyway
[14:04] <Upu> " I keep getting a million emails and facebook notifications about your Dave in Space page so please have a look at them if you want!!! Love Wife" :)
[14:05] <Dan-K2VOL> hehe
[14:07] <Upu> this is what happens when you steal your wifes facebook account
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[14:08] <jgrahamc> I'm not going to be able to view daveake's photos because I don't use my Facebook account with anyone but family. Any chance of Flickr?
[14:08] <hibby> Dan-K2VOL: sitting about like a boss at the moment.
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[14:18] Nick change: SelfishMan_ -> Selfishman
[14:18] Nick change: Selfishman -> SelfishMan
[14:20] <daveake> Upu LMAO
[14:20] <daveake> jgrahamc yes I'll upload to flickr
[14:21] <daveake> Just sorting out some photo prints to send to the guy whose garden it (nearly) landed in
[14:22] <jgrahamc> Thanks daveake
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[14:34] <daveake> Photos (yes, on Facebook again) of the descent - https://www.facebook.com/media/set/?set=a.10150237284117654.318770.695937653&l=3829cc106e
[14:35] <jgrahamc> Ah. I can see them.
[14:35] <jgrahamc> Cool.
[14:35] <hibby> god, join the cool kids and come play on flickr :p
[14:35] <Laurenceb> looool
[14:36] Action: hibby has started posting pictures of yankland
[14:37] <cuddykid> haha, having a good time Hibby?
[14:37] <daveake> I have an account so no problem :)
[14:37] <fsphil> how's the natives hibby? :)
[14:37] <daveake> That latex was about 600g of the original 1kg
[14:38] <hibby> fsphil: http://www.flickr.com/photos/djhibby/5924646711/in/photostream
[14:38] <Dan-K2VOL> where's your pics hibby
[14:38] <hibby> reckon it can do topband?
[14:38] <hibby> http://www.flickr.com/photos/djhibby/
[14:39] <fsphil> oooooooooh
[14:40] <jgrahamc> Had anyone here seen the HF antenna at Horse Guards parade in London?
[14:41] Action: Laurenceb facepalms at USA power system
[14:41] <Laurenceb> http://www.flickr.com/photos/djhibby/5924647713/in/photostream
[14:41] <Laurenceb> looks like uk in the 1950s :P
[14:41] <jgrahamc> http://en.wikipedia.org/wiki/File:Admiralty_Extension_from_Horse_Guards_Parade_-_Sept_2006.jpg
[14:42] <Dan-K2VOL> yeah laurenceb me too, it's terrible looking
[14:42] <fsphil> only better weather
[14:42] <Dan-K2VOL> and storms constantly knock them down in this area
[14:42] <hibby> haha
[14:42] <hibby> crisis
[14:42] <fsphil> even their storms are better
[14:42] <Laurenceb> here pretty much everything is buried
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[14:42] <Laurenceb> apart from rural areas and a few unmodernised areas
[14:43] <fsphil> in NI only the big high-voltage lines are above ground these days
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[14:43] <Dan-K2VOL> nice
[14:43] <hibby> aye, it's only our 44kV lines that are overground at home
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[14:43] <hibby> There's some local distribution at 33kV about too
[14:43] <Dan-K2VOL> makes much more sense
[14:43] <fsphil> still plenty of telephone lines
[14:43] <hibby> Interestingly, it's easier to bury them as all pylons have different EU height limits
[14:44] <Dan-K2VOL> too much rapid suburban growth I think to focus on perfecting existing systems here
[14:44] <hibby> my mother's one in her garden got raised (after 50 years of existance) because it was too low
[14:44] Nick change: Cleo_ -> Cleo
[14:44] <Dan-K2VOL> interesting hibby
[14:44] <hibby> the dipshits forgot to extend the wires, and as such I got called one night telling me of electric lightning coming from the connection panel to the house
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[14:44] <hibby> she was utterly terrified
[14:45] <fsphil> that would be pretty scary
[14:45] <Dan-K2VOL> when I was a kid an Aunt of mine took me out under some high voltage lines like that, showed me how you can hold up a flourescent bulb and it will light up
[14:46] <Dan-K2VOL> that really got me interested in science
[14:46] <hibby> especially for a 60-something
[14:46] <hibby> Dan-K2VOL: awesome
[14:46] <Dan-K2VOL> (it was raining)
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[14:47] <hibby> I've done some similar stuff with LEDs, a yagi and the 817 on 5w
[14:47] <fsphil> he, cool Auntie. mine would probably declare it witchcraft ;)
[14:47] <Dan-K2VOL> nice hibby, make a rectenna?
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[14:48] <Dan-K2VOL> lol fsphil
[14:48] <hibby> Dan-K2VOL: pretty much
[14:48] <jgrahamc> I keep wondering about making a rectenna for my bike and powering my LED bike lights from 3G signals.
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[14:48] <hibby> just making sure the leads are 1/4 wave each and adding elements to the yagi to demonstrate the change in signal
[14:49] <Dan-K2VOL> hibby, have you seen the Goldstone radio dish microwave power transfer experiment video?
[14:49] <fsphil> makemag did a similar demo a while back
[14:50] <hibby> Dan-K2VOL: no?
[14:50] <hibby> fsphil: indeed. I love Diana Eng a little bit
[14:51] <Dan-K2VOL> I can't youtube at work, but google that - they had a huge tower with a square array of rectennas connected to lightbulbs on a mountain ridge across the valley from NASA's Deep Space Network Goldstone radio dish antenna, and they pumped the maximum transmit power from the dish - the tower lit up like a christmas tree
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[14:52] <Dan-K2VOL> I think it was back in the 1970s, Carl Sagan might have been involved
[14:52] <Dan-K2VOL> ?
[14:54] <hibby> sweet
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[14:55] <fsphil> I remember that video, was neat
[14:56] <fsphil> you could see them moving the dish around, the spot of lights would move
[15:04] <fsphil> I hope there where no birds in the beam path
[15:16] <fsphil> and right on time: http://hackaday.com/2011/07/11/scavenging-ambient-electromagnetic-energy/
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[15:26] <Dan-K2VOL> indeed!
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[15:44] <SamSilver> help please I am looking for a accurate conversion chart / prog / calculator for dBm > milliwatt any sugestions?
[15:45] <BrainDamage> mW=10^(dBm/10)
[15:46] <Dan-K2VOL> http://www.wolframalpha.com/input/?i=1+dbm+to+milliwatts
[15:46] <SamSilver> thanx
[15:46] <BrainDamage> say you got 30dBm, 10^(30/10) mW = 10^3 mW = 1000mW = 1W
[15:47] <SamSilver> 12dBm would be ...
[15:48] <BrainDamage> 10^1.2 = 15.845 mW
[15:49] <SamSilver> ahhh ^ is "to the power of"
[15:49] <BrainDamage> yes, sorry, I assumed you were familiar with that notation
[15:50] <SamSilver> thanx BrainDamage i have learnt somthing and that is better than using a chart every time
[15:50] <SamSilver> Dan-K2VOL: thanx my man
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[15:52] <SamSilver> I am thinking of going low power 433 mhz 15milliwatts instead of 5 watts 144.800 mhz
[15:53] <SamSilver> the anttena are smaller in width, I am looking for pics or info on what the ukhas guys are using
[15:59] <Laurenceb> http://www.youtube.com/watch?v=ijWwfcw0FOo
[15:59] <Laurenceb> eeek
[16:00] <fsphil> SamSilver: a simple 1/4 wave vertical is the most common style of antenna for the 434mhz modules
[16:01] <fsphil> each element about 16cm long
[16:01] <SamSilver> fsphil: oops i was meaning the reciver end
[16:03] <SamSilver> some of the spacenearus flights are tracked at 400 miles and more
[16:03] <SamSilver> was wanting to know what they using
[16:03] <fsphil> yea, I've received using an FT-817ND, and a Diamond 2m/70cm dual band antenna
[16:04] <SamSilver> wow range?
[16:04] <fsphil> 560km-ish
[16:04] <fsphil> the signal was borderline on that one though - I doubt it would go much futher without a yagi
[16:05] <SamSilver> the diamond is a vertical diploe
[16:05] <SamSilver> ?
[16:05] <fsphil> yea, X-50 iirc
[16:06] <SamSilver> I supose recevier sensitivity must be brought into the equation
[16:06] <fsphil> cable loss is important too
[16:06] <fsphil> a short run of RG58 is enough to reduce the signal enough that I can't decode it
[16:06] <SamSilver> you use R58
[16:07] <SamSilver> ?
[16:07] <fsphil> only from the attic to my room
[16:07] <fsphil> the antenna to the attic is RG213
[16:07] <fsphil> when I'm tracking I setup the radio in the attic, so there is no RG58
[16:08] <SamSilver> ant the antenna is outside right?
[16:08] <fsphil> yes, it's on a 3 metre pole on the roof so it's pretty high up
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[16:10] <SamSilver> I built a 144mhz 6 element antenna that is 3m long and wide like a motherinlaw
[16:10] <SamSilver> also built a 6 element yagi 434 and that is hand held size
[16:11] <SamSilver> was going to get a 5 watt 144 Tx but am thinking along the lines of 15milliW 434 now
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[16:12] <fsphil> it seems to work well - the biggest limitation seems to be the requirement of an SSB capiable receiver
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[16:17] <hibby> I'm probably going to build one when I get back
[16:18] <hibby> no way I can afford an HF receiver, so I'll diy
[16:18] <jgrahamc> What's the legality of flying 144Mhz at 5W?
[16:19] <SamSilver> I am in South Africa
[16:19] <SamSilver> 5 watts is good
[16:19] <fsphil> fine everywhere but in the UK
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[16:24] <fsphil> SamSilver: did you use some kind of balun in your yagi antenna?
[16:25] <hibby> We've got gamma matches in the Univeristy yagis
[16:25] <SamSilver> nope wait I will get link for you
[16:25] <hibby> it's not perfect, but it works
[16:26] <SamSilver> http://www.nr6ca.org/70cmyagi.html
[16:27] <fsphil> thanks both
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[16:28] <SamSilver> afk for 5 mins
[16:29] <hibby> as far as I see, our system makes the driven element a bit like an adjustable folded dipole, which will cancel the X component of the impedance
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[16:29] <hibby> (god, I almost sound like I know what I'm doing)
[16:30] <hibby> aww, there's actually an active beam antenna I've had great success with
[16:31] <SamSilver> back
[16:31] <SamSilver> lol
[16:33] <hibby> aha!
[16:33] <hibby> there we go
[16:33] <hibby> I'm such a nerd... I searched through my history with the only bit I could remember about the antenna
[16:33] <hibby> the phase difference of the elements
[16:33] <hibby> fsphil: had some ace performance with these http://www.mydarc.de/dk7zb/HB9CV/Details-HB9CV.htm
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[16:40] <SamSilver> hibby: i think Darkside has a few of these in his arsenal
[16:42] <Elwell> Q - magmount or gutter / trunk mount (to fit a 2m/70cm dual bander on a passat estate?
[16:42] <Elwell> i can haz rails and roofbars too if need be
[16:45] <hibby> magmount might scratch the paintwork
[16:46] <Elwell> pfft
[16:46] <hibby> however is less faff to remove/attach
[16:46] <Elwell> its been in france since sept
[16:46] <Elwell> so scratches aren't an issue
[16:48] <hibby> lol
[16:52] <hibby> you going to shift your lazy self and get a license over there?
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[17:04] <hibby> I might as well go home at this rate, by the time I'm allowed to work there'll be no point in starting.
[17:07] <ruku> What are you guys using for pressure sensors?
[17:07] <ruku> It seems everything that goes down to zero is $30+
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[17:12] <daveake_> I used an SCP1000. It gave very stable readings in testing on the ground, but got a bit random (a lot random) up in the air. Not had a chance yet to find out why.
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[17:14] Action: hibby highlights that, theoretically, a pressure sensor will never have to output 0kPa
[17:17] <ruku> Sure, but it seems that at ~50k ft you go to ~11 kPa
[17:18] <hibby> lemme pull up what our students used for a pressure sensor
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[17:18] <ruku> I'm looking at the MPX2100 right now... Just need to make sure I can get that tiny 40 mV signal amplified right :P
[17:18] <hibby> that's just conditioning - the easy bit
[17:19] <ruku> Have used the MPX4115A before, was a good sensor, but only down to 2.2 psi, limits you to 50k ft
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[17:19] Nick change: MI6VIM -> fsphil
[17:20] <hibby> Bosch - Digital Barometric Pressure Sensor BMP085
[17:20] <hibby> it's i2c
[17:20] <hibby> worked nicely though
[17:21] <hibby> http://personal.strath.ac.uk/james.tosh/launchanalysis_files/image018.jpg
[17:21] <hibby> they performed some maths on it, but you can see that it worked mostly
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[17:22] <hibby> after about 15k, the errors in the sensor began to take more of an effect given they were (comparatively) such a large % of the reading by that time
[17:24] <ruku> That's fairly impressive
[17:24] <hibby> 15km, that is
[17:24] <ruku> The thing's rated for 9km
[17:25] <ruku> but it looks as if it worked all the way to 15km
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[17:46] <Elwell> hibby: (licence) yeah eventually....
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[17:55] <Upu> evening
[17:59] <daveake_> Evening :)
[17:59] <daveake_> cloud1 took 27 minutes to come down; it's taken me 27 hours!
[18:01] <Upu> yeah can imagine :)
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[18:02] <Upu> there is a launch on Wednesday
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[18:05] <Upu> http://ukhas.org.uk/projects:current_launch
[18:12] <fsphil> rjh doing a launch?
[18:16] <SamSilver> slightly off topic > http://www.gizmag.com/scavenging-ambient-electromagnetic-energy/19163/
[18:17] <SamSilver> afk
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[18:21] <fsphil> hiya GW8RAK
[18:21] <GW8RAK> Hi fsphil
[18:21] <GW8RAK> Back from holiday unfortunately.
[18:22] <GW8RAK> But can now get on with projects.
[18:22] <fsphil> aaah, sometimes people are glad to get back. I guess this was a very good holiday :)
[18:22] <GW8RAK> Very good. Southern Spain near Cadiz.
[18:22] <GW8RAK> Just come into the shack and looking at all the half finished projects.
[18:23] <GW8RAK> Can't guarantee to finish them, but if they all become 75% finished, that is progress of a sort.
[18:23] <fsphil> 75% is still good :)
[18:24] <GW8RAK> Also trying to find a recipe for peanut sauce. Had it while away and it was fantastic.
[18:24] <fsphil> most of mine don't get past the first 5%
[18:24] <GW8RAK> My Spanish isn't good enough to ask the chef
[18:25] <GW8RAK> I'm going to take a few months off from the Air Cadets so I can get some of these projects going again.
[18:25] <GW8RAK> The balloon has been on hold until I can organise insurance.
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[18:30] <fsphil> still no luck with that?
[18:30] <GW8RAK> Going to try to fly under RAF Met people if I can
[18:30] <GW8RAK> But if no go, then I'll do it as a private project and not an official Air Cadet one.
[18:31] <GW8RAK> The flight computer is ready to go and is a 50mm cube, plus batteries and camera etc
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[19:08] <cuddykid> hmm, initial tests of usb comms with a570 camera indicate that the camera isn't that reliable at determining the exact time length of pulse
[19:13] <daveake_> Why does it need the length of the pulse?
[19:13] <cuddykid> the test script I was running meant the camera executed different commands based on the length of pulse
[19:14] <cuddykid> but, as I only need 1 primary command (video) shouldn't be a big problem
[19:14] <daveake_> Ah, OK. Can you do different numbers of consecutive pulses instead?
[19:14] <cuddykid> I think so, will have a play around :)
[19:15] <cuddykid> pretty neat though being able to pulse it and have it execute different commands!
[19:15] <daveake_> Good :-). I'd patent it but now I've told you I can't
[19:15] <cuddykid> but still doesn't make me like the chdk after what happened with HABE1 lol..
[19:15] <daveake_> Yep - didn't think it was that smart
[19:15] <daveake_> LOL
[19:15] <cuddykid> bbl
[19:15] <daveake_> But you feel better after my Canon cock-up? ;-)
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[19:34] <jcoxon> evening all
[19:35] <Upu> hey jcoxon evening
[19:36] <daveake_> evening
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[19:49] <Upu> fsphil its the Icarus payload being launched by a school, possibly with a different call sign
[19:49] <fsphil-laptop> gotcha
[19:53] <Upu> you about ? I should be but I'll set the radio up for remote
[20:00] <fsphil> most likely yea
[20:00] <fsphil> though at work
[20:02] <Upu> yeah me too
[20:05] <cuddykid> haha yeah daveake_
[20:05] <cuddykid> just hit the buy button for an SD card breakout board
[20:06] <Upu> :)
[20:06] <fsphil> yay
[20:06] <jcoxon> hey WillDuckworth
[20:06] <cuddykid> probably take about 2 weeks from HK
[20:10] <daveake_> cuddykid - Have fun :)
[20:10] <cuddykid> cheers, should be interesting to have a play around with
[20:10] <daveake_> I didn't want to wait, hence the direct soldering approach :)
[20:10] <cuddykid> yeah lol
[20:11] <cuddykid> well, I'm off on hol for ~2 weeks on Thurs, so hopefully will arrive then
[20:12] <cuddykid> updating iPhone to beta 3..
[20:13] <cuddykid> wonder if it will stop the horrific lag in beta 2
[20:15] <WillDuckworth> hi jcoxon
[20:16] <jcoxon> hows that gumstix
[20:16] <jcoxon> ?
[20:17] <WillDuckworth> he he, struggling with the svn, ok with the git repository
[20:17] <WillDuckworth> trying to compile the sstvtx.c
[20:17] <WillDuckworth> but no joy yet
[20:17] <jcoxon> oh
[20:17] <jcoxon> i seem to remember i hacked a build script
[20:18] <jcoxon> but its been a while
[20:18] <WillDuckworth> any pointers greatly received!
[20:20] <jcoxon> i've got the sstv apk
[20:20] <jcoxon> sorry ipk
[20:21] <WillDuckworth> is that in the zip on your pegasus site? didn't seem to like it when i tried it on the later 'git' build environment
[20:22] <jcoxon> yeah that unsuprising really
[20:22] <WillDuckworth> hence i tried to persevere with the svn method - but it's v stale
[20:22] <WillDuckworth> and the patches/fixes have dead links
[20:22] <WillDuckworth> doh
[20:22] <jcoxon> yeah
[20:22] <jcoxon> better to go for latest version really
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[20:24] <WillDuckworth> i'll get there... hopefully
[20:25] <jcoxon> pico has been running since 0730 this morning
[20:26] <WillDuckworth> good stuff, when are you hoping to launch?
[20:26] <jcoxon> well it needs some more work
[20:26] <jcoxon> i want to get it to survive the night
[20:27] <WillDuckworth> how heavy is it? are you aiming lightweight for this?
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[20:27] <jcoxon> 40g
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[20:28] <WillDuckworth> arduino pro mini?
[20:30] <jcoxon> yeah
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[20:36] <WillDuckworth> i was thinking of a similar thing, almost have the transmitter crystal touching the voltage regulator for 'warmth' on the pro mini
[20:37] <jcoxon> yeah thats what i did with my atlas pcb
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[20:39] <WillDuckworth> good be something for the ukhas workshop?
[20:39] <WillDuckworth> i can bring a few pro minis along
[20:42] <jcoxon> yeah
[20:42] <jcoxon> not sure what we should do for that
[20:42] <jcoxon> i was thinking we could make a CW repeater
[20:43] <jcoxon> or perhaps an RTTY repeater
[20:43] <jcoxon> but it would be quite a challenge
[20:43] <jcoxon> lots of aspect
[20:43] <jcoxon> aspects*
[20:43] <jcoxon> but super cool to launch
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[20:49] <WillDuckworth> ttfn
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[21:11] <fsphil> +1 for the rtty repeater
[21:12] <jcoxon> :-)
[21:13] <fsphil> might attract too much attention though, end up with a pileup :)
[21:14] <jcoxon> well
[21:18] <jcoxon> still be very cool
[21:18] <jcoxon> we could fly it a few times
[21:18] <fsphil> looks like kf4zti launched today? (on spacenearus)
[21:18] <jcoxon> yeah
[21:19] <fsphil> would be nifty - I think an rtty decoder could be made with an nrx2 fairly easily
[21:20] <jcoxon> i reckon we'd have 2 teams
[21:20] <jcoxon> rx and tx
[21:20] <jcoxon> then meet in the middle
[21:20] <NigeyS> meep
[21:21] <fsphil> evenin NigeyS
[21:21] <NigeyS> evening Phil
[21:22] <jcoxon> hey NigeyS
[21:22] <NigeyS> hey James
[21:23] Action: fsphil is enduring Eagle once more
[21:23] <NigeyS> eek
[21:24] <jcoxon> hehe i quite like eagle
[21:24] <fsphil> got an avr chip, sd plug and ISP header so far
[21:24] <fsphil> need to add the ntx2
[21:25] <NigeyS> rob has it in the icarus lbr phil
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[21:26] <fsphil> oooh
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[21:26] <NigeyS> jcoxon, you think a fully inflated foil balloon will go over 18km ?
[21:26] <Lunar_Lander> hello people
[21:27] <Lunar_Lander> hello GW8RAK!
[21:27] <NigeyS> evening lunar
[21:27] <jcoxon> NigeyS, no
[21:27] <Lunar_Lander> I got news for you
[21:27] <NigeyS> jcoxon, oh good, i ont ned to change the gps unit then
[21:27] <fsphil> haha
[21:27] <NigeyS> dont need*
[21:27] <Lunar_Lander> hi NigeyS fsphil jcoxon
[21:28] <NigeyS> phil, that module is still resetting the baud rate after its been powered off for a few hours :(
[21:28] <jcoxon> NigeyS, its ram is clearing
[21:28] <jcoxon> probably capacitor keeping it alive
[21:28] <fsphil> yea odd that it remembers at all - I take it there's no battery in it NigeyS?
[21:28] <NigeyS> it's got a code to store it to the flash but its storing the wrong baudrate for some reason :/
[21:28] <NigeyS> it has a btt
[21:29] <NigeyS> batt*
[21:29] <fsphil> ah
[21:29] <NigeyS> will just have to reset it before launch i guess
[21:30] <Lunar_Lander> well people, I had great luck today
[21:31] <fsphil> I try to always use the default
[21:31] <fsphil> cause I don't trust gps units :)
[21:31] <jcoxon> Lunar_Lander, uhuh
[21:31] <Lunar_Lander> I got a FT-790R for 115 €
[21:31] <fsphil> sweet!
[21:32] <Lunar_Lander> yeah :)
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[21:33] <Lunar_Lander> thanks :)
[21:34] <Lunar_Lander> finally
[21:34] <Lunar_Lander> xD
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[21:34] <fsphil> got it yet?
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[21:35] <Lunar_Lander> no, today it was on ebay
[21:35] <Lunar_Lander> without any bids
[21:35] <Lunar_Lander> so I asked the guy if he would sell it to me
[21:36] <Lunar_Lander> he added a immediate buy option
[21:36] <Lunar_Lander> and then I had it
[21:36] <Lunar_Lander> :)
[21:36] <Lunar_Lander> now I'll come all the way from Austria
[21:36] <Lunar_Lander> *it'll
[21:37] <jcoxon> its a great radio
[21:37] <Lunar_Lander> yeah
[21:37] <Lunar_Lander> thus you recommend it :)
[21:39] <fsphil> tis
[21:39] <fsphil> yay, ntx2 added
[21:44] <Lunar_Lander> yea
[21:52] <fsphil> living live on the edge, adding surface mount parts :)
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[21:54] <fsphil> so far: http://i.imgur.com/hvzyL.png
[22:05] <hibby> spoke to GE today
[22:05] <Lunar_Lander> well
[22:05] <Lunar_Lander> off to bed :)
[22:05] <hibby> was positive
[22:05] <Lunar_Lander> good night
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[22:05] <hibby> nn
[22:05] <jcoxon> payload still running!
[22:06] <fsphil> hibby, about time :)
[22:06] <fsphil> I had visions of you being trapped there
[22:07] <hibby> haha
[22:07] <hibby> nah, went to meet the guy I'm working with
[22:07] <hibby> he looked quite happy when I told him the experience I have...
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[22:15] <jcoxon> night all
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[22:15] <Upu> yeah don't read anything into this but ditto
[22:16] <Upu> night
[22:16] <fsphil-laptop> :p
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[22:29] <ruku> fsphil, whoo surface mount 8D
[22:30] <fsphil-laptop> it'll all end badly :)
[22:31] <ruku> hardly
[22:31] <ruku> I've got a qfp-44 sitting right next to me
[22:32] <ruku> if you have desoldering braid, a good fine tip / solder, and maaaybe some flux
[22:32] <ruku> life is a peach =D
[22:35] <fsphil-laptop> got all those things :)
[22:35] <fsphil-laptop> the worst part is a 44 pin avr
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[23:24] <Elwell> fsphil-laptop: just looking at your flickr pics
[23:24] <Elwell> 'there are nearly 300 more pics of this' at the branches :-)
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[23:28] <fsphil-laptop> oh yea
[23:31] <fsphil-laptop> the most photographed tree ever I think :)
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[23:32] <fsphil-laptop> made a little video of them -- the payload actually drops a bit a few minutes after landing
[23:37] <ruku> fsphil, is it the xmega?
[23:38] <ruku> rather, an xmega >>;
[23:38] <fsphil-laptop> atmega644p
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[23:40] <ruku> d'oh, thats what you had in your thing
[23:40] <fsphil-laptop> yea, sticking with what I know
[23:41] <ruku> I just moved to an xmega32a4
[23:41] <fsphil-laptop> though I suppose now would be a good time to look for something better
[23:41] <ruku> they fixed a ton of frustrating things with the hardware
[23:41] <ruku> except the ADC is broken beyond all reason
[23:43] <ruku> the biggest hitch is you need something that can use their new programming interface (PDI)
[23:43] <fsphil-laptop> aah
[23:43] <ruku> otherwise its been pretty easy to pick up
[23:43] <ruku> the dragon can do it
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[23:43] <ruku> and their cheap non-debugger one
[23:44] <fsphil-laptop> reading about it -- it's a beastie little chip compared to the atmega
[23:45] <ruku> yeah
[23:45] <ruku> the five serial ports is huge for my project
[23:45] <ruku> and its nice to be able to pick where things go
[23:45] <ruku> maybe I want my I2C bus on the other side of the chip
[23:45] <ruku> and the DMA interface is ridiculous
[23:46] <ruku> Hey UART, transfer this string. *goes back to work*
[23:46] <fsphil-laptop> oooh
[23:46] <ruku> not to mention all the registers are packed into sane structures
[23:46] <fsphil-laptop> it has a proper uart buffer then
[23:46] <ruku> a four channel ADC
[23:46] <ruku> at least for outgoing... it doesn't do circular buffers for the input
[23:46] <fsphil-laptop> seems like a step between atmega and arm
[23:47] <ruku> but it does let you use a serial clock, and I believe DTR and some other pins
[23:47] <ruku> yeah
[23:47] <ruku> but the ADC is REALLY broken
[23:47] <ruku> like REALLY.
[23:47] <ruku> I got all excited... differential measurement, 12 bits, 2 megasamples per second
[23:47] <ruku> four channel pipelined ADC
[23:47] <fsphil-laptop> good speed
[23:48] <ruku> yeah
[23:48] <ruku> but single ended mode doesn't work
[23:48] <ruku> you can't use the internal references
[23:48] <ruku> the external references can't be below 2 V
[23:48] <ruku> and the gain is non linear (I think)
[23:48] <ruku> ye gods if all those things worked it'd be the perfect chip
[23:49] <ruku> programmable gain? <3!!
[23:49] <fsphil-laptop> maybe the next revision
[23:49] <hibby> ruku: programmable gain == op amp with different resistors
[23:49] <hibby> :p
[23:49] <ruku> haha yeah I know
[23:49] <ruku> but its nice to not need extra components
[23:49] <fsphil-laptop> I'll stick with the 644p for this project
[23:50] <fsphil-laptop> learning eagle is enough for now ;)
[23:50] <ruku> and there's a PLL on it, so you don't need to worry about fuses and stuff.
[23:50] <hibby> fsphil-laptop: sounds like a resolution youtube would implement
[23:50] <ruku> hee </atmel-rep>
[23:50] <fsphil-laptop> lol
[23:50] <hibby> heheh
[23:50] <hibby> AVRs are better than PICs. That's just science.
[23:51] <hibby> I know, because I'm an engineer.
[23:51] <hibby> also, in a better mood about being here now
[23:51] <fsphil-laptop> My first microcontroller was a pic
[23:51] <hibby> although it is TOO DAMN HOT
[23:51] <fsphil-laptop> 16f628
[23:51] <hibby> no one ever forgets their first
[23:51] <fsphil-laptop> indeed
[23:52] <ruku> My first was a tiny44.
[23:52] <ruku> I bricked it in 24 hours by disabling the reset fuse. ;~;
[23:53] <fsphil-laptop> smooth
[23:53] <hibby> fsphil-laptop: I think that big radio mast I puictures runs 700kHz
[23:54] <fsphil-laptop> yea the am band is pretty popular there isn't it?
[23:54] <hibby> think so
[23:54] <hibby> might try and build a crystal set to see
[23:55] <fsphil-laptop> don't think they have the LW band
[23:55] <hibby> lol...
[23:55] <hibby> 700kh, 500Kw, 100% modulation
[23:55] <hibby> is the slogan
[23:55] <fsphil-laptop> eek
[23:56] <hibby> glad we're not fighting with them for band space
[23:56] <hibby> QRM!
[23:57] <fsphil-laptop> it's a lot of power, I'd say you could hear that station here at times
[23:57] spacekitteh (~TraumaPon@124-171-93-107.dyn.iinet.net.au) left irc: Read error: Connection reset by peer
[23:58] <fsphil-laptop> bed time! night all!
[23:59] fsphil-laptop (~phil@host109-150-35-38.range109-150.btcentralplus.com) left irc: Quit: kerblam
[23:59] <ruku> fo srs, I'm out oto
[23:59] <ruku> too*. night #HA
[23:59] <hibby> nn
[00:00] --- Tue Jul 12 2011