highaltitude.log.20130401

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[00:15] <willdude123> Could the pi be used as an SDR server?
[00:16] <bertrik> yes
[00:18] <willdude123> Maybe with jack output for tablets.
[00:18] <willdude123> Then I'd have a really portable tracking solution.
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[00:36] <mfa298> willdude123: it willcertainly work for rtl_tcp. I'm not sure it has enough power to decode something to audio
[00:37] <mfa298> my netbook was at its limits with doing sdr things
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[02:43] <nigelvh> Evening UpuWork
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[03:40] <KT5TK> nigelvh still there?
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[03:52] <nigelvh> Yeah KT5TK
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[03:54] <KT5TK> Happy easter.
[03:55] <nigelvh> Happy easter.
[03:55] <ETXSondeCatcher> I'm just curious, as to why someone would go to the trouble of adding the ..gimmick to predictor?
[03:55] <KT5TK> The Si4464 might need a bit more load in the matching network
[03:55] <ETXSondeCatcher> happy eater, whats left of it
[03:56] <ETXSondeCatcher> easter too&*
[03:56] <KT5TK> Easter++
[03:56] <nigelvh> Certainly plausible. Like I said, I've got very little support on it. But I do have the supply coil and the decoupling cap, so I'd guess I can't be too far off.
[03:56] <nigelvh> I also didn't see a power set command in your test code.
[03:57] <KT5TK> My power meter shows 0.1 W
[03:57] <nigelvh> Does your power meter go below that?
[03:57] <KT5TK> though this is the smallest resolution of the Chinese made thingy
[03:57] <ETXSondeCatcher> must be one of those yellow meters :)
[03:57] <nigelvh> Yeah, that's what I wonder about. I put mine on my scope and took a P-P reading.
[03:58] <KT5TK> However that's more than I get from any 7012
[03:58] <nigelvh> Over a 50ohm load
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[03:58] <KT5TK> Yes there is a built in 10W dummy
[03:58] <nigelvh> Have you tried putting a load and using the scope?
[03:59] <KT5TK> Is there a proper solder joint below your Si chip?
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[03:59] <KT5TK> I have no scope that goes that high
[04:00] <nigelvh> I believe so. I used hot air to put it on.
[04:01] <KT5TK> I had to re-solder several times to get all pins properly set
[04:01] <nigelvh> Also, my scope doesn't go that high, so I can't define the waveform, but even if it won't trigger properly, the blur still shows the peak to peak
[04:01] <KT5TK> Though my probs were on the data pads on the other side
[04:02] <nigelvh> Yes, I originally feared that too when I couldn't get it to talk, so I redid the soldering a bit.
[04:03] <KT5TK> Yes, after I got good output I didn't even bother with a power command
[04:03] <nigelvh> The docs say the default is max output, so you haven't needed to set it.
[04:03] <nigelvh> I had just been curious if you did something special to get that output.
[04:04] <KT5TK> I do a tune step though
[04:04] <KT5TK> did you try that?
[04:05] <nigelvh> I don't go through all those steps like you do. I send a start tx command which the chip should run through all those steps on it's own.
[04:05] <nigelvh> Though it's possible it does it differently if you tell it specifically to tune.
[04:06] <KT5TK> Doc says that the api does this automatically. Though I don't use the api
[04:06] <nigelvh> Yes, I send {0x31, 0x00, 0x30, 0x00, 0x00, 0x00} to enter TX
[04:07] <KT5TK> put a tune step right before that
[04:08] <nigelvh> Just a moment and I'll test it.
[04:13] <nigelvh> Nope, no difference
[04:13] <KT5TK> :(
[04:14] <nigelvh> I think I've got some room to play with the support stuff around it to see if it gets better, so I'm not giving up hope yet. But at this point I'm hoping software wise there's nothing different.
[04:14] <KT5TK> Make sure that you don't have a short to the RX pad
[04:15] <KT5TK> email me your code.
[04:16] <nigelvh> Sent
[04:16] <KT5TK> Got it. Let me check
[04:17] <nigelvh> Also, what resistance do you measure between the RX pin and TX pin?
[04:20] <nigelvh> There seems to be some internal stuff going on. Unpowered, with multimeter probes in one polarity 0 ohms, and in the other infinite.
[04:20] <nigelvh> But I figure that means not a solder short.
[04:22] <KT5TK> ~ 20 kOhms when I have + on RX and -on TX
[04:23] <nigelvh> Hmmmmm
[04:23] <nigelvh> That sounds like partly your filter stuff
[04:24] <nigelvh> Though none of the coils should offer that much...
[04:25] <KT5TK> other Ohmmeter says 500k
[04:26] <nigelvh> I'll try reseating and see what I get.
[04:40] <KT5TK> can't find anything wrong with your code.
[04:40] <KT5TK> Not sure about your previous frequency seting function, but I have sent you a spreadsheet that shows how it is calculated
[04:41] <KT5TK> Nice to have your temperature and Voltage functions.
[04:44] <nigelvh> Yes, they were good ones to test with to see real data coming back from the chip
[04:45] <KT5TK> BTW is your SDN pin on ground level?
[04:45] <nigelvh> Also, apparently I just managed to rip a few pads off the board, so I'll need to do some fixing.
[04:45] <nigelvh> SDN is floating, which seems to work fine.
[04:46] <KT5TK> Those small pieces are nasty.
[04:46] <KT5TK> Did I send you 2 pcbs? I don't remember
[04:46] <nigelvh> Maybe, I'll have to look...
[04:47] <KT5TK> If not, you can have another one.
[04:47] <KT5TK> I'll need to order new PCBs because of the capacitor mistake anyways
[04:54] <KT5TK> I recommend to solder a 1k resistor at R10 to make sure SDN is on low level
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[04:55] <nigelvh> Yeah, I can't seem to find a second board if there were one, so there's that.
[04:56] <KT5TK> is your Si4464 still ok?
[04:57] <nigelvh> Hard to know. The pads I tore off were some of the SI4464 pads.
[04:57] <nigelvh> I'd guess it's fine.
[04:57] <KT5TK> ok I'll send you both
[04:58] <nigelvh> Thanks, I'm pleased to be of any help I can.
[04:59] <KT5TK> you did help a lot already
[04:59] <nigelvh> Did you figure out your power issue with your PA board?
[05:00] <KT5TK> hmm, don't remember which of the many issues I was talking about with you.
[05:01] <KT5TK> The RF6886 makes about 200mW when driven from a 7012
[05:02] <KT5TK> but I had to insert a driver amp in between
[05:02] <nigelvh> Your flight in germany, you said you were guessing that the signal became distorted with drooping output power.
[05:03] <KT5TK> Ah, That was likely the boost regulator on the PA PCB
[05:04] <nigelvh> Yeah, I was just curious if you ended up changing any of that, or if you're just going to start powering from higher voltage sources.
[05:04] <KT5TK> It doesn't go that far down like the ones we use on the Pecan2 PCB
[05:05] <KT5TK> I believe that the 100 mW from Pecan2 is plenty
[05:05] <KT5TK> PecanPico2 actually
[05:06] <nigelvh> Just not gonna bother with the PA then?
[05:06] <KT5TK> But I'll try another Amp when the PecanPico2 works consistently
[05:07] <KT5TK> For normal flights and Picos I'll just use it naked
[05:07] <nigelvh> Makes sense. So is your 4464 not booting consistently without assistance?
[05:07] <KT5TK> For Transcontinental attempts maybe a switchable PA might be nice
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[05:09] <KT5TK> I guess I have problems with the cap I soldered on the trace. Not sure if the contact is proper.
[05:09] <KT5TK> I'll try 220 pF also
[05:09] <nigelvh> That's a pretty thin trace to try and cut and solder to.
[05:09] <KT5TK> yea
[05:10] <nigelvh> Before I ripped the pads, 220 worked pretty good for me.
[05:11] <KT5TK> Essentially I have the new PCB version ready. Unless you have some additional recommendations I'll send it off soon
[05:11] <nigelvh> I still think I'd like to see a bit lower voltage coming out of the cap to get better into the quoted range, but if it works, then it works.
[05:15] <KT5TK> Also I operate the VCXO at the moment with 0V Vcontrol. Which is out of spec
[05:15] <nigelvh> In theory I also operate mine there, and that works ok.
[05:16] <KT5TK> As soon as I have the Trackuino driver I'll see if it's still unstable as I have it
[05:17] <KT5TK> Which VCXO were you using in the final attempts?
[05:18] <nigelvh> Your 27MHz one you sent along.
[05:18] <nigelvh> Though the 26MHz TCVCXO I had worked fine as well.
[05:18] <KT5TK> Ah, ok. But the other one worked as well?
[05:18] <nigelvh> Though I haven't tried modulating.
[05:19] <KT5TK> np. that we'll see soon
[05:19] <KT5TK> 27 MHz VCXOs are quite cheap
[05:19] <nigelvh> Yeah
[05:21] <KT5TK> BTW did you see http://websdr.tkrahn.com:8901 ?
[05:22] <KT5TK> A battery of 4 RTL dongles
[05:22] <nigelvh> No, I hadn't seen that. That's pretty cool.
[05:23] <KT5TK> The Websdr software supports rtl dongles now.
[05:23] <KT5TK> Imagine the possibilities for balloon tracking
[05:23] <nigelvh> Do you guys really have much activity on 1.25m?
[05:23] <KT5TK> Not much but some.
[05:24] <KT5TK> I just ordered two TYT radios that can do 220 MHz
[05:25] <nigelvh> I've got one, but really don't use it. Not a ton of activity around here.
[05:25] <KT5TK> The nice thing about this band is that you are forced to do a lot DIY
[05:25] <nigelvh> mmhmm
[05:26] <KT5TK> With the SDR I try to stirr up some more activity there
[05:27] <KT5TK> I was surprised to see at least 3 active repeaters
[05:29] <nigelvh> I haven't been doing a whole ton of work with the radio stuff lately. (Besides getting my little transmitter board set up for beaconing APRS and WSPR at black rock). I've been busy with working on my battery analyzer. http://digitalnigel.com/wordpress/wp-content/uploads/2013/03/IMG_0956.jpg
[05:30] <nigelvh> Hopefully that message wasn't too long.
[05:30] <KT5TK> A very elegant way to burn energy :)
[05:31] <nigelvh> Yeah, it's working pretty well. I had a smaller heatsink before and could really only get 10-15 watts dissipation, but now I'm getting 50W dissipation, and that gives me good range in choosing the discharge rate, so I think I'm close to being ready to sell the kit.
[05:32] <KT5TK> Nice.
[05:32] <KT5TK> Do you go through a distributor?
[05:33] <nigelvh> No, I'm starting up a web site for kits and things with a couple friends of mine. nwkits.com
[05:33] <nigelvh> Nothing but a couple test posts presently, but soon we hope to have stuff there.
[05:33] <KT5TK> Interesting.
[05:34] <nigelvh> If I could get other places interested in selling our kits, I think we'd certainly be up for that.
[05:34] <KT5TK> Hopefully you'll have some APRS trackers some day....
[05:34] <KT5TK> Sparkfun should be worth a try
[05:35] <nigelvh> I believe I will, but I'm not sure I'd sell the board in it's current form, for a kit, it's a very difficult proposition for a lot of people. I might make a larger, easier to solder board.
[05:36] <KT5TK> pre-assemble the SMD parts and let the customer finish the thru hole parts
[05:36] <nigelvh> Well, if the whole board is SMD, that's not much of a kit.
[05:36] <nigelvh> But that IS what I'm doing with my battery analyzer. That way it will be pre-programmed as well.
[05:37] <KT5TK> check out PMSDR
[05:38] <KT5TK> I have bought one of their "kits" and almost everything was pre-soldered
[05:39] <KT5TK> Just connect the boards with wires and you're done
[05:39] <KT5TK> Was still fun to build
[05:39] <nigelvh> That doesn't seem like much of a "kit" to me. Also, that's a huge time sink on my side to solder all those components.
[05:40] <nigelvh> Also, that Si570 is a wonder chip for these radio projects.
[05:40] <KT5TK> There are manufacture houses that do this
[05:40] <nigelvh> Certainly, but are the quantities I'll be selling (at least to start) going to be worthwhile to pay for someone to manufacture it?
[05:41] <KT5TK> I think so. Look for prototyping services
[05:42] <KT5TK> In any case, if you want to sell a kit you'll want to bump up the numbers as good as you can to drop the costs
[05:43] <nigelvh> Yes
[05:44] <KT5TK> Already at > 100 pieces the manufacturing houses is the way to go
[05:44] <nigelvh> Yes, but until I start, we won't know if we'll even have 100
[05:44] <KT5TK> Below that number making kits is probably a loss business anyways
[05:45] <arko> Does anyone know if the helium mixture can effect the burst altitude?
[05:45] <arko> I mean, it makes sense
[05:45] <nigelvh> The question is how much time you have to put into it, and how much markup you add.
[05:45] <arko> If the air ratio to helium is too high
[05:45] <arko> But does it effect it by 10000m?
[05:46] <KT5TK> arko: yes, definitely
[05:46] <arko> By 10000m?
[05:47] <KT5TK> Depends on the exact ratio, but yes, likely even more
[05:47] <arko> We got the helium from a party store
[05:47] <arko> So should we have gotten the helium from a source that provides pure stuff?
[05:47] <arko> Pure stuff was stupid expensive
[05:48] <KT5TK> I use that Party gas often with my Picos. It's not too bad.
[05:48] <arko> Airgas had some for like $400
[05:48] <nigelvh> Hydrogen
[05:48] <arko> Yeah, might do that next time
[05:48] <KT5TK> But I don't have a 1:1 comparison with commercial helium
[05:49] <KT5TK> More important is likely the latex material
[05:51] <KT5TK> Has anyone ever tried these? http://ravenaerostar.com/solutions/aerospace/hand-launched-balloons
[05:51] <KT5TK> No idea how much they are.
[05:53] <nigelvh> Interesting...
[06:02] <WB8ELK> Hi Thomas....I've flown Raven zero pressure balloons all the way up to 512,000 cubic footers
[06:02] <WB8ELK> an order of magnitude more difficult to launch than latex balloons
[06:03] <KT5TK> Hi Bill
[06:03] <WB8ELK> Although Raven won't sell to individuals...only to companies and certain universities
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[06:03] <KT5TK> Any idea about the price range?
[06:03] <WB8ELK> Global-Western however will sell to individuals and are quite reasonable for small zero pressure balloons
[06:04] <KT5TK> I have some contacts to unis that may help
[06:04] <WB8ELK> After Raven bought out Winzen their price doubled
[06:04] <WB8ELK> Basically they require either high dollar insurance capability or zero-pressure experience
[06:05] <WB8ELK> but Global Western is cheaper and no pre-requisites
[06:05] <WB8ELK> Mark Caveizel NG0X runs Global
[06:05] <KT5TK> http://www.global-western.com/ seems to be down
[06:05] <WB8ELK> Not sure of his website...I usually just email him...I can send you his email
[06:06] <KT5TK> Would be interesting. We're always open to try something new.
[06:06] <WB8ELK> As far as Raven envelopes go....the best one to start out with is their 19,000 cubic footer
[06:06] <KT5TK> As long as it's in our budget
[06:06] <WB8ELK> I'll email you Mark's email and he can quote you for various sizes
[06:07] <KT5TK> Thanks a lot
[06:07] <WB8ELK> I flew my APRS tracker board twice now
[06:07] <WB8ELK> just last Saturday on one of the UAH flights
[06:08] <WB8ELK> It transmits on 144.39 APRS and then switches to 144.34 and sends packet again followed by RTTY
[06:08] <WB8ELK> 200 milliwatts
[06:08] <KT5TK> Nice. Do youi have some docu/pics for it?
[06:08] <WB8ELK> which is plenty from the signal reports I got with it
[06:08] <WB8ELK> I can email you some...still cleaning up the code
[06:08] <KT5TK> Nigel and I are just building a tracker around a Si4464
[06:09] <WB8ELK> I looked at that chip and have two of them I was experimenting with
[06:09] <WB8ELK> I think 100 milliwatts would be plenty from my experience running my board around in my car the past month or so
[06:10] <WB8ELK> I even had good results with 15 milliwatts
[06:10] <KT5TK> http://tkrahn.dyndns.org/gallery2/main.php?g2_itemId=9178
[06:10] <WB8ELK> The Si4464 puts out 100 mW as I recall?
[06:10] <nigelvh> Yeah
[06:10] <KT5TK> yes, and that pretty solid for me
[06:10] <WB8ELK> I'd use a VCXO to control it
[06:10] <nigelvh> mmhmm
[06:10] <WB8ELK> like I do on my board
[06:11] <WB8ELK> I do like the very fine frequency steps on the 4464
[06:11] <KT5TK> That's exactly what we do
[06:11] <WB8ELK> probably 30 MHz?
[06:11] <KT5TK> 27 MHz
[06:12] <WB8ELK> I use 16.384 MHz VCXO on my board with the Cypress synthesizer
[06:12] <KT5TK> That's cheaper because it's a standard freq
[06:12] <WB8ELK> ah yes...that would be good since it's in the range...but you have to adjust their divider register I believe
[06:12] <nigelvh> Not a big deal
[06:13] <KT5TK> Adjusting the XO freq is easy.
[06:13] <KT5TK> Just set it at boot
[06:13] <WB8ELK> Have you used the internal temperature feature on it or the other ADC ... 9 bit ADC as I recall?
[06:13] <nigelvh> I've got some code for that
[06:13] <WB8ELK> needs a blocking cap if under 1.4 Vpp on the XO?
[06:13] <KT5TK> Not yet, but I certainly will. Nigel has written some code for it already
[06:14] <WB8ELK> I had it prototyped up but put it on the back burner while I fine-tuned my Cypress-based board
[06:14] <WB8ELK> I think if the VCXO puts out over 1.4 Vpp you don't need the cap
[06:14] <nigelvh> KT5TK, if it wasn't already clear, you're more than welcome to steal what's handy from the code I put together.
[06:14] <KT5TK> Yes. you'll need a cap in any case if you use an external oscillator
[06:14] <nigelvh> Yes, you need the cap
[06:15] <WB8ELK> I had a cap in it....but the datasheet mentioned you didn't need it if large enough Vpp from the VCXO
[06:15] <KT5TK> tnx nigel
[06:15] <nigelvh> Datasheet lies
[06:15] <nigelvh> You need the cap
[06:15] <KT5TK> Not sure why, but it didn't work without a cap
[06:15] <WB8ELK> Figures ;)
[06:16] <WB8ELK> I used a datasheet for a pressure sensor from Motorola....said it would work down to a vacuum
[06:16] <WB8ELK> but stopped at 44,000 feet
[06:16] <WB8ELK> the first batch worked all the way to 99,000 feet
[06:17] <nigelvh> I use a honeywell sensor that I've taken to 130,000'
[06:17] <KT5TK> That's vacuum from a tyre pressure perspective ;)
[06:17] <WB8ELK> but the second batch did not....their engineer said it was too expensive to manufacture them to a vacuum and they'd update the datasheet someday
[06:17] <WB8ELK> exactly LOL
[06:18] <WB8ELK> Yes...I like the Honeywell sensors....they bought out Sensym I believe....the AAA5 or something like that
[06:18] <WB8ELK> I'll have to dig out my 4464 prototype again
[06:19] <nigelvh> I use the ASDXACX015PAAA5
[06:19] <WB8ELK> Yes...that's the one I fly
[06:19] <nigelvh> Not cheap, but a very nice sensor
[06:19] <WB8ELK> it's been going way up in price everytime I order some
[06:20] <nigelvh> Yeah
[06:20] <WB8ELK> I think you'll find that 100 mW out of the 4464 will work just fine in a high altitude balloon
[06:20] <WB8ELK> I had S9+20 signal strength from 100 miles away from 200 mW
[06:21] <nigelvh> Yeah, I've used 250mW in the past with no issues, I'm sure 100 would work fine.
[06:21] <nigelvh> (APRS)
[06:21] <nigelvh> RTTY you can get away with less.
[06:21] <WB8ELK> Yep...I can hear 10 mW RTTY from a long way with my high-gain antenna with preamp
[06:22] <WB8ELK> During last Saturday's flight I think I didn't miss even one report on APRS with 200 mW from my board
[06:23] <WB8ELK> Had a lot of direct reception at my farmhouse which is on a mountain
[06:23] <KT5TK> Yes, 100 mW are plenty. Instead of an amp you might add a shortwave WSPR TX
[06:23] <WB8ELK> I set it up as an iGate on 144.35 MHz clear channel
[06:23] <nigelvh> An excellent option. Doing a xmit on a clear channel also helps with direction finding.
[06:24] <WB8ELK> As you have seen I've been testing the board on WSPR on everything from 40m to 10m
[06:24] <WB8ELK> 200 mW on 30m and 20m got reports from Australia
[06:24] <WB8ELK> 10 mW works to Europe
[06:24] <nigelvh> I did a WSPR test this last week from the Black Rock Desert with about 40mW into a REALLY bad antenna, and didn't manage any reports. Though I know the xmit works as I can recieve it myself.
[06:24] <KT5TK> Yes, likely 30m is the way to go on a balloon
[06:25] <WB8ELK> unfortunately I still haven't figured out how to send useful position reports without having to resort to 2 two-minute transmissions
[06:25] <KT5TK> nigelvh at which QRG?
[06:25] <WB8ELK> Black Rock Desert....wow...did you see the rocket in the tire at the bar in Gurlock?
[06:26] <nigelvh> Gerlach, and no, I didn't. Bruno's bar isn't someplace we spent a lot of time. We were in the desert actually launching rockets instead.
[06:26] <KT5TK> There is no way. Youll need two transmissions
[06:26] <WB8ELK> That rocket almost hit me.....that was 14 years ago
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[06:27] <WB8ELK> Yep....but as long as someone hears that first transmission...you can get away with more of the 2nd transmissions...but a real pain...wish they had put in extended grid square capability in the first place
[06:27] <WB8ELK> yep...it's in front of Bruno's bar
[06:28] <WB8ELK> We shot a rocket through the back tire of the BLM observer's car at LDRS
[06:28] <WB8ELK> and that tire is sitting in front of Bruno's
[06:28] <nigelvh> Anyway, I was using a 15m ham stick on 30m with 40mW. Not the best.
[06:28] <WB8ELK> I've had great results with 10 to 20 mW on 40m, 30m and 20m on WSPR
[06:29] <WB8ELK> with a vertical
[06:29] <nigelvh> Yeah, I figure I'll hook it up to my antenna here at home and see what I get with a real antenna.
[06:29] <WB8ELK> what was going on at Black Rock?
[06:29] <KT5TK> My experience with WSPR is that you do need a resonant antenna
[06:30] <WB8ELK> with that low of power....a resonant antenna is a must
[06:30] <nigelvh> We were launching rockets. I volunteer with a group here at the University of Washington who does a trip to black rock every year to launch our larger rockets.
[06:30] <WB8ELK> Great....I've been to the LDRS launches at Black Rock many times
[06:31] <WB8ELK> We were going to fly our Rockoon from Black Rock but had more range flexibility from the Gulf of Mexico on a boat
[06:31] <WB8ELK> 400 pound rocket
[06:31] <nigelvh> We did a rockoon this year. Though not as large.
[06:31] <WB8ELK> Black Rock would be about the only place over land to fly a Rockoon
[06:31] <nigelvh> Pretty spectacular.
[06:31] <WB8ELK> JP Aerospace flies from there
[06:32] <WB8ELK> I was involved in some early Rockoon flights in the 90's
[06:32] <WB8ELK> Did the telemetry for a number of them...and live video downlinks
[06:32] <WB8ELK> We launched our rocket from 75,000 feet...also did a rocket glider
[06:33] <WB8ELK> www.harcspace.com
[06:33] <WB8ELK> some photos on our website
[06:33] <WB8ELK> Tricky to keep a rockoon within the range limits at Black Rock...have to be good at predicting the flight paths
[06:33] <nigelvh> Yeah, the FAA wouldn't let us release, so it was tethered at 1000'
[06:34] <WB8ELK> Best to launch over water...easier to get FAA permission....
[06:34] <nigelvh> I figure so.
[06:34] <WB8ELK> U of S. Florida did one last year...I was one of the advisors
[06:34] <nigelvh> The university has a large research vessel that we've been mulling over how to get use of it.
[06:35] <WB8ELK> U C F actually
[06:35] <WB8ELK> That would be ideal
[06:35] <WB8ELK> We launched from a large oil supply boat
[06:35] <WB8ELK> about 200 miles out in the Gulf
[06:36] <WB8ELK> although the Texas coast might be ideal....Thomas might be able to help you out there....how far are you from the TX coast?
[06:36] <nigelvh> We're in Seattle
[06:36] <nigelvh> so a few thousand miles
[06:36] <WB8ELK> Yep...but KT5TK is in TX
[06:36] <WB8ELK> I'm in Alabama
[06:36] <KT5TK> We're about 50 miles from the coast
[06:36] <nigelvh> Yes, he's much closer to the texas coast.
[06:36] <WB8ELK> Huntsville...the Rocket City
[06:37] <nigelvh> I visited Huntsville a few years back
[06:37] <nigelvh> Went to the nasa facility there.
[06:37] <WB8ELK> If you come back....would love to visit with you
[06:38] <WB8ELK> They did the Burning Man about 4 miles from where we launched our rockets at Black Rock one year....that was quite a bizarre spectacle
[06:38] <nigelvh> I will certainly let you know if I come. Though, I don't often have excuses to visit other states.
[06:38] <WB8ELK> I work out there on the Redstone Arsenal
[06:39] <WB8ELK> We just did our Univ of Alabama Huntsville student balloon flights this weekend....three launched in a row
[06:39] <WB8ELK> managed to group them about a couple of miles apart for the landing about 100 miles downrange
[06:39] <KT5TK> Heard about that
[06:40] <nigelvh> In a couple months I'll be helping with the other UW class I work with and we'll probably do two balloons.
[06:40] <WB8ELK> a fellow was outside remodeling a house...heard something and our first balloon landed right next to him
[06:40] <nigelvh> Two is our usual. Last year the class was small so we did one.
[06:40] <WB8ELK> missed him by a couple of feet
[06:40] <nigelvh> Couple years ago we JUST missed a power substation.
[06:41] <KT5TK> nigelvh you should do a floater next time
[06:41] <WB8ELK> Floaters are fun nigel
[06:41] <WB8ELK> I actually sent one to Texas last Summer
[06:41] <WB8ELK> about 800 miles to my West
[06:41] <WB8ELK> Stratospheric winds are from the East during the Summer
[06:41] <KT5TK> I believe at your latitude they work better than in the South
[06:41] <nigelvh> I may personally try a floater sometime, but the class has the goal of getting their stuff back, so they want it to burst reasonably close.
[06:41] <WB8ELK> parked it at 109,000 feet
[06:43] <KT5TK> make one to get back and one to float
[06:43] <WB8ELK> I flew one of UPU's pAVA boards a few weeks ago....small enough to fly on a 36" foil party balloon
[06:43] <WB8ELK> those will float if you get the lift just right
[06:43] <WB8ELK> I could hear the signal from 150 miles away with good copy
[06:43] <WB8ELK> but it was on a student flight and went up to 90,000 feet
[06:44] <KT5TK> I did Pico floaters too. They're real fun and relatively cheap
[06:44] <nigelvh> That's what I was figuring, was a pico.
[06:44] <WB8ELK> The trick I found with the 1600 gram Hwoyee's is to keep the ascent rate under 400 ft/min
[06:44] <KT5TK> http://tkrahn.dyndns.org/gallery2/main.php?g2_itemId=8315
[06:44] <WB8ELK> and don't go over 3 pounds nozzle lift
[06:45] <WB8ELK> I think 3 pounds was actually pushing it quite a bit as most floater flights in the UK usually send up half-pound or less payloads
[06:45] <nigelvh> Yeah
[06:45] <WB8ELK> Nice Thomas.....did those float?
[06:46] <KT5TK> We used much lower nozzle lifts for our Hwoyee floaters
[06:46] <WB8ELK> 400 ft/min was also pushing it
[06:46] <WB8ELK> ideally you want to be under 250 ft/min
[06:46] <nigelvh> Yeah, I figured with the mylar was to get some lift, but underfill them.
[06:47] <KT5TK> Yes, they were lost somewhere near New Orleans over the gulf
[06:47] <WB8ELK> with the mylars I've been told to keep their free lift about 1 gram
[06:47] <nigelvh> That's got to be hard to measure.
[06:47] <WB8ELK> how long did they float...and what altitude did they float?
[06:48] <KT5TK> http://ukhas.org.uk/projects:microballoons:data
[06:48] <WB8ELK> I've noticed that some of the newer Hwoyee's tend to burst around 85,000 feet instead of going on up...the one's last year worked better
[06:48] <KT5TK> They're in that table
[06:50] <WB8ELK> Thanks Thomas....I have a half dozen of those silver 36" balloons...will have to try that
[06:52] <KT5TK> OK guys. I'll change to the horizontal polarization now. I'll have to work tomorrow...
[06:52] <WB8ELK> My farthest floater flight was around 1400 miles...ended up in the Atlantic near Nova Scotia....that was with a 1500 gram Totex
[06:52] <nigelvh> Have fun!
[06:53] <WB8ELK> Great talking to you Thomas.
[06:53] <KT5TK> gn all!
[06:53] <nigelvh> Evening
[06:54] <WB8ELK> Nigel....going to head that way too...2 am here
[06:54] <nigelvh> It's midnight here, so I'm probably not far off myself.
[06:54] <WB8ELK> see you all later
[06:54] <nigelvh> Evening
[06:56] <WB8ELK> arko....if you read this later....try contacting the Southern California T-Hunters....they often hide hidden transmitters in the Mojave Desert....they have lots of experience DFing transmitters in that rugged terrain
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[06:57] <WB8ELK> http://www.thunter.org/
[06:57] <WB8ELK> Here's their website: http://www.thunter.org/
[06:57] <WB8ELK> They've chased and tracked down many of my balloons flown in CA around the LA area
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[07:26] <arko> WB8ELK!
[07:26] <arko> thank you sir!
[07:26] <arko> i will relay this to our recovery guy
[07:27] <arko> :)
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[07:53] <jcoxon> morning all
[07:55] <Upu> mornig
[07:55] <Upu> morning
[08:00] <jcoxon> ping Darkside
[08:06] <Upu> ping arko
[08:06] <arko> sup Upu
[08:06] <Upu> hey Arko
[08:06] <Upu> any dates for us yet ?
[08:06] <arko> wassup
[08:06] <arko> haha
[08:06] <arko> for conference
[08:07] <arko> ?
[08:07] <Upu> yes
[08:07] <arko> not yet, it's in my calendar
[08:07] <arko> which looks wayyy less busy
[08:07] <arko> for this week
[08:07] <arko> gonna budget and plan
[08:07] <Upu> ok nps
[08:07] <arko> i should get back to you with an estimate by wednesday
[08:07] <Upu> ok cool
[08:08] <arko> alright time to sleep
[08:08] <arko> night yall!
[08:08] <Upu> night
[08:12] <Hiena> Hmmm...There should be a way to remove the copper chloride from the old etching baths. The solubility the copper-chloride and the iron(III)-chloride almost same. The copper-chloride diamagnetic, but i can't remember the magnetism of the iron-chloride.
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[09:23] <fsphil> April. Feels like December :)
[09:24] <nigelvh> It is april 1, maybe it really is december.
[09:24] <daveake> The ultimate April Fool
[09:24] <daveake> https://www.google.com/intl/en/landing/nose/
[09:26] <fsphil> hehe, AdScent
[09:27] <daveake> I like the google maps treasure mode
[09:27] <daveake> Anyone not like flying? You'd love this ... http://www.virgin.com/richard-branson/blog/virgin-atlantic-launches-worlds-first-ever-glass-bottomed-plane
[09:28] <chrisstubbs> shame about youtube though
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[09:30] <fsphil> that would be so cool if it was possible
[09:30] <daveake> Especially the loo
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[09:31] <fsphil> would certainly encourage people to wash their hands afterwards
[09:35] <cuddykid> love these google april fools
[09:40] <daveake> http://www.guardian.co.uk/technology/video/2013/apr/01/guardian-goggles-video is quite good
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[09:44] <daveake> http://www.bbc.co.uk/news/world-europe-21991622 has me scratching my head
[09:45] Action: fsphil flees from the internet
[09:46] <daveake> BMW always do one http://www.bmw.co.uk/en/publicPools/campaign-pages/bmw-pram/bmw-pram-maam.html
[09:47] <jonsowman> bmw's are always good
[09:47] <jonsowman> "Head of Postnatal Innovation"
[09:47] <jonsowman> haha
[09:47] <daveake> I liked the extendable flagpoles as standard
[09:48] <chrisstubbs> "Joke King"
[09:48] <chrisstubbs> oh that typo ruined it
[09:48] <jonsowman> what've you done :|
[09:48] <jonsowman> i was about to call
[09:48] <daveake> hah
[09:48] <fsphil> do it
[09:48] <chrisstubbs> stupid fingers
[09:49] <fsphil> 0800 number, will only cost you your dignity
[09:49] <daveake> lol
[09:49] <daveake> And record it :)
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[09:55] <daveake> http://blog.twitter.com/2013/03/annncng-twttr.html
[10:00] <fsphil> vry gd
[10:01] <nigelvh> yh twttr yyh syh fnny
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[10:06] <fsphil> I like that the xkcd 'Time' comic is still changing
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[10:19] Nick change: MichaelC|Sleep -> MichaelC
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[10:29] <number10> has anyone recently bought a good cheapish bench PSU that they could recommend?
[10:33] <daveake> I have this one - http://cpc.farnell.com/_/in05523/power-supply-bench-lcd-30v-3a/dp/IN05523 - it's good except for the terminals which are poor for holding wire ends
[10:33] <daveake> So if you get it get some banana plugs or spade connectors too
[10:36] <number10> cheers daveake I'll take a look
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[10:42] <chrisstubbs> i should get a bench psu with current limiting some time tbh
[10:42] <daveake> variable current limiting is a must imo
[10:42] <fsphil> yep
[10:43] <chrisstubbs> yeah just running stuff off an atx power supply isnt great
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[10:43] <fsphil> that's a nice one daveake
[10:43] <daveake> I call those "magic smoke finders"
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[10:43] <fsphil> I've got a taller version, had two of them but one failed
[10:44] <daveake> Yeah has coars/fine pots which is nice
[10:44] <fsphil> ooh that is nice
[10:44] <fsphil> I must open up the broken one sometime, see what's up
[10:44] <willdude123> Is it normal that my .irssi folder only has a config file in it?
[10:44] <fsphil> not that I know what to look for
[10:44] <SpeedEvil> I have the version of daveakes one with analog meters
[10:44] <fsphil> reassuringly expensive
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[10:46] Nick change: cuddykid_ -> cuddykid
[10:49] <SpeedEvil> I need to open it up, and find out why it will only do 500mA@27.8v
[10:50] <fsphil> the voltage on my faulty one wanders quite a bit
[10:50] <fsphil> started doing it after I used it to power a mac laptop
[10:58] <Upu> number10 this is exactly what I use : http://www.ebay.co.uk/itm/FARNELL-E30-2-VARIABLE-0-30-VOLT-TEST-BENCH-POWER-SUPPLY-NO-RESERVE-/151018610464?pt=UK_BOI_Electrical_Test_Measurement_Equipment_ET&hash=item2329691f20
[10:59] <Upu> £12.50 :)
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[10:59] <Upu> I replaced the posts on mine as they were worn but does banana plugs and screw on wires
[11:00] <Upu> just no digital display
[11:00] <number10> cheers Upu - i'll take a look
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[11:05] <number10> I do like a current limit on PSU - my last one did - has saved a few magic smoke moments
[11:06] <daveake> And just make sure the metter is in voltage mode before you try winding up the voltage to a new level :)
[11:06] <number10> :)
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[11:13] <eroomde> 100% endoresement on current limit!
[11:13] <eroomde> otherwise spinning up new boards can be a very expensive business
[11:17] <SpeedEvil> also, power lines on the board with a 0804 pinout, shorted by a track. so you can power the chips one by one after you cut it
[11:20] <fsphil> one flaw with mine is you can't tell what the current limit is set to
[11:20] <fsphil> it's got a digital display that only shows what's being consumed at that moment, not what the limit is
[11:23] <number10> my last one was like that - so I just wond the current nearly fully down first and slowly increased
[11:23] <daveake> Short + to - then set :)
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[11:27] <fsphil> must try that. I think it detects it and shuts down
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[11:30] <daveake> oh not helpful
[11:30] <daveake> That's known as a "foldback" regulator
[11:31] <daveake> short it and the current limit automatically drops to reduce power disspiation
[11:32] <fsphil> that one you linked to, it doesn't do that?
[11:32] <daveake> nope
[11:34] Action: fsphil looks around room for space to put it
[11:37] <fsphil> hah, it's snowing
[11:37] <eroomde> sod this weather
[11:37] <eroomde> i am cycling to work tomorrow
[11:37] <eroomde> BST means i have no excuse not to do 22miles through the countryside at 6pm
[11:38] <eroomde> UTC provided a convenient excuse
[11:39] <eroomde> but this snow bollocks might put me off
[11:40] <fsphil> it is quite annoying at this point
[11:42] <fsphil> hmm.. chocolate isn't really a lunch
[11:42] <eroomde> add coffee
[11:42] <fsphil> don't like coffee
[11:42] <eroomde> and maybe some cheese
[11:42] <eroomde> :o
[11:42] <fsphil> cheese is an option
[11:43] <eroomde> duck
[11:43] <eroomde> a duck breast is an amazing thing
[11:43] <eroomde> shame they charge for it when it's just game
[11:44] <fsphil> never had duck. something for the todo list
[11:44] <number10> nice to do on a grill pan on the BBQ
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[11:45] <chrisstubbs> oh no my vb6 runtime is out of date.
[11:45] <number10> I have a venison rack in the freezer I was going to try on the BBQ if we had a decent spell this easter
[11:46] <fsphil> chrisstubbs: don't believe it's possible for it not to be
[11:46] <chrisstubbs> my thoughts exactly
[11:46] <chrisstubbs> fsphil, you will like what im instaling
[11:46] <chrisstubbs> now the desk is tidy its time to untidy it with a new project
[11:46] <fsphil> I predict otherwise :)
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[11:47] <fsphil> (you're not installing VB6 are you?)
[11:47] <chrisstubbs> oh god no.
[11:47] <fsphil> oh phew
[11:47] <chrisstubbs> drivers, for some reason needed them...
[11:47] <fsphil> not a good sign
[11:47] <daveake> VB6? April Fools jokes should have stopped 47 minutes ago
[11:47] <fsphil> you can crash VB6 by goto'ing out of a while loop
[11:47] <chrisstubbs> nope, things will only get worse from this point
[11:48] <fsphil> or a With block
[11:49] <daveake> I think that this article http://www.newburytoday.co.uk/ should have been better edited ...
[11:49] <daveake> See second paragraph :)
[11:49] <fsphil> hah
[11:50] <fsphil> he looks ... concerned
[11:50] <daveake> So would be with the missing teeth
[11:50] <daveake> and hair
[11:50] <daveake> and skin and all
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[12:09] <chrisstubbs> fsphil, you ready for this? ;)
[12:11] Action: fsphil braces
[12:11] <chrisstubbs> http://86.169.78.54:7777/
[12:11] <willdude123> Good Afternoon.
[12:12] <willdude123> chrisstubbs: I'm jealous of your control over that machine.
[12:12] <fsphil> sweeeet
[12:13] <willdude123> chrisstubbs: May I ask, can I have a go?
[12:13] <chrisstubbs> you got VNC?
[12:13] <chrisstubbs> i was going to make a web interfece, but the normal interface is so bad anyway...
[12:14] <willdude123> chrisstubbs: Why? Is it controlled via vnc?
[12:14] <chrisstubbs> its just a windows program so yeah
[12:15] <willdude123> Can I have a go then? :)
[12:15] <chrisstubbs> sure, check your PM
[12:19] <Morseman> Hello ducky
[12:20] <Morseman> That's a very advanced robot arm that just came into shot ;)
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[12:23] <Morseman> Seems to stop updating at times
[12:24] <chrisstubbs> Morseman, the robot arm cam?
[12:24] <Morseman> Yes
[12:25] <chrisstubbs> yeah the connections a bit rubbish here and willdude123 is controling it over VNC so its horribly laggy
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[12:27] <Lunar_Lander> hello
[12:28] <chrisstubbs> hey lunar
[12:28] <Lunar_Lander> how are you today?
[12:28] <chrisstubbs> not bad thanks
[12:29] <chrisstubbs> been playing with the robot arm :P
[12:29] <Lunar_Lander> yea
[12:29] <Lunar_Lander> I am trying KiCAD and immediately screwed up
[12:31] <chrisstubbs> ah :(
[12:32] <Lunar_Lander> it drives me nuts
[12:32] <Lunar_Lander> why can everyone else make PCBs
[12:33] <chrisstubbs> took me ages to get the swing of eagle
[12:33] <chrisstubbs> still have to look things up
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[12:33] <Lunar_Lander> yeah
[12:34] <Lunar_Lander> hi mclane
[12:34] <chrisstubbs> before that i used expressPCB, but its pretty rubbish
[12:34] <Lunar_Lander> yea
[12:34] <Lunar_Lander> I probably should have watched Part II of Dave's KiCAD test
[12:34] <Lunar_Lander> but for me it seemed logical
[12:34] <chrisstubbs> ok for doing home etched boards but i dont think you can do files to send to a board house (except express pcbs board house)
[12:34] <Lunar_Lander> first draw the schematic
[12:34] <Lunar_Lander> then select footprints with a nice PDF showing how they look like
[12:34] <Lunar_Lander> and then do the routing
[12:35] <Lunar_Lander> and I learned
[12:35] <Lunar_Lander> Autorouters are bad
[12:36] <chrisstubbs> yeah autoroute never worked well for me, you can probably set them up to work a little better
[12:37] <Lunar_Lander> yea
[12:37] <Lunar_Lander> xD there is a nice drive rant by Dave about them
[12:38] <Lunar_Lander> chrisstubbs, well maybe it is also a RTFM thing
[12:38] <chrisstubbs> just saw the sream stats for that robot arm cam. im sorry to whoever got 0.8FPS
[12:38] <Lunar_Lander> as I am just sifting through the PDF "getting_started_in_kicad"
[12:38] <Lunar_Lander> xD
[12:39] <Lunar_Lander> oh
[12:39] <Lunar_Lander> that is slow as anything
[12:39] <mfa298> chrisstubbs: I only just clicked on it and I think the frame rate might be better to describe in frames per minute
[12:40] <Lunar_Lander> chrisstubbs, btw, what I tried to do was a simple power supply with a lin reg
[12:40] <Lunar_Lander> figured it is better to try that first
[12:40] <Lunar_Lander> :)
[12:40] <chrisstubbs> mfa298, lol. webcamxp is ok for one viewer
[12:41] <mfa298> not so good with a whole channel of viewers
[12:41] <chrisstubbs> Lunar_Lander, like a 7805 one?
[12:41] <mfa298> especially if you're on adsl
[12:41] <Lunar_Lander> yea
[12:41] <chrisstubbs> yeah :(
[12:41] <Lunar_Lander> I liked that you can relabel it as an LD1117V33
[12:41] <Lunar_Lander> or whatever sparkfun has
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[12:53] <griffonbot> Received email: mclane "[UKHAS] PYSY-4 Launch Pre-Announcement April 6th, 2013"
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[12:55] <willdude123> chrisstubbs: Are you going to make a web interface?
[12:56] <willdude123> Could you use a joystick for it?
[12:56] <chrisstubbs> im fighting libusb to talk to it atm in vb.net
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[12:57] <chrisstubbs> domlin made a keyboard hook for it that allowed you to use a wiimote last year
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[13:02] <willdude123> Any launches at the weekend? I'm making a receiver.
[13:02] <chrisstubbs> willdude123, im trying for the weekend after next
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[13:02] <fsphil> if this winter continues much longer there might not be many launches at all :)
[13:03] <jonsowman> it's a balmy and tropical 4C here today
[13:03] <eroomde> ffs
[13:03] <eroomde> i need it to heat up
[13:03] <daveake> My Pug still reads around 25C
[13:03] <willdude123> When I make my receiver, will I be able to get someone to send a test signal or something?
[13:03] <daveake> Must get that fixed
[13:03] <jonsowman> daveake: easy to change the sensor, £20 for a new one from a dealer
[13:03] <fsphil> 25C is optimistic even for summer
[13:04] <chrisstubbs> where are you based will?
[13:04] <eroomde> willdude123: yes
[13:04] <jonsowman> or you can do what i did and get a 3k ntc thermistor from farnell for 5p
[13:04] <daveake> Yeah got one but it's colde outside :[
[13:04] <daveake> :p
[13:04] <jonsowman> hehe
[13:04] <eroomde> it's known as a flight
[13:04] <daveake> hah!
[13:04] <jonsowman> it's within a degree or two
[13:04] <jonsowman> good enough
[13:04] <chrisstubbs> you might have a local 70cms repeater you can listen in to
[13:04] <eroomde> indeed
[13:04] <eroomde> infact where are you?
[13:04] <daveake> Cheaper, I could have kept the one from the mirror I broke a few years ago ...
[13:05] <eroomde> but there should be plenty of radio traffic you can listen to
[13:05] <eroomde> fm radio in 88-110MHz
[13:05] <eroomde> local repeaters
[13:05] <eroomde> gps sats maybe
[13:05] <daveake> Local oil level senders, weather stations ...
[13:06] <Lunar_Lander> GPS?
[13:07] <Lunar_Lander> GPS runs at several GZh
[13:07] <Lunar_Lander> *GHz
[13:07] <Lunar_Lander> daveake, what is a Pug?
[13:07] <daveake> ugly doog
[13:07] <daveake> dog
[13:07] <daveake> or short for "Peugeot"
[13:08] <Lunar_Lander> oh
[13:08] <Lunar_Lander> yeah the sliding doors idea
[13:08] <daveake> good grief no not that ugly thing
[13:08] <mfa298> willdude123: have a look at http://www.ukrepeater.net/70cm.htm if there's one fairly near you it should be possible to hear it
[13:09] <mfa298> you might have to listen for ~15 mins to hear an ident (usually a short bit of morse code)
[13:09] <eroomde> you'll know when you find it
[13:09] <eroomde> everything around you will turn beige
[13:10] <jonsowman> lol
[13:10] <eroomde> you'll start to have a vocal opinion on the best driving route from some place to another place
[13:10] <jonsowman> you will suddenly start making websites with backgrounds like 70s wallpapers
[13:11] <chrisstubbs> and know the exact snow status
[13:11] <eroomde> you will agree the sandels are very sensible shoes to wear over socks
[13:11] <eroomde> for foot thermal amanagement
[13:12] <chrisstubbs> then join raynet
[13:12] <daveake> and you will realise that shaving is just too much hassle
[13:13] <eroomde> you will think that it is the better forum for debating the merits of having a gastricband fitted
[13:13] <eroomde> as opposed to your doctor's office
[13:13] <daveake> And anytime someone suggests buying a Yagi, you will feel forced to explain that you can make one for free from wire and paperclips
[13:14] <eroomde> and half a second hand cable tie you found on the floor at a steam rally
[13:14] Action: mfa298 seems to recall seeing debates about making yagi's on here, must be time to run for the hills
[13:14] <daveake> Ultimately you will be able to talk for hours on the benefits of N-type connectors
[13:14] <jonsowman> mfa298: yes but the general opinion on here is "don't bother"
[13:15] <mfa298> true
[13:15] <jonsowman> bbl
[13:15] <jonsowman> off to make a yagi etc
[13:15] <eroomde> insertion loss becomes time when they xyl keeps you from interesting radio things
[13:16] <eroomde> the xyl*
[13:16] <daveake> I just remembered what an xyl is
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[13:16] <daveake> Damn I need a shave
[13:17] <Lunar_Lander> xD
[13:17] <Lunar_Lander> so you think the old times were better?
[13:17] <Lunar_Lander> like Dave on EEVBlog explained that you had electronics magazines and Databooks?
[13:17] <fsphil> yea it was much better before people
[13:17] <fsphil> evolution really did a bad thing there
[13:17] <daveake> Yes I used to have a pile of electronic mags and a shelf of Texas TTL databooks
[13:17] <eroomde> 24hour band from mentioning dave from EEVBlof Lunar_Lander
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[13:18] <Lunar_Lander> xD
[13:18] <eroomde> ban*
[13:18] <daveake> and NatSemi IC ones (full of lies those)
[13:18] <eroomde> EEVBlog*
[13:18] <Upu> Can anyone help me with some maths : http://i.imgur.com/2UnnSsN.jpg
[13:18] <fsphil> I've some old issues of Television -- no idea where they came from
[13:18] <Lunar_Lander> why were the National books full of lies?
[13:18] <eroomde> Upu: yes
[13:18] <Lunar_Lander> looks like an impedance
[13:19] <daveake> Wireless World had the letters page ... "Where Einstein Went Wrong" every month
[13:19] <eroomde> that's what i say about you
[13:19] <Lunar_Lander> oh
[13:19] <daveake> LL They had sample circuits which never worked
[13:19] <Upu> sorry wrong window got a desk covered in datasheets here
[13:19] <Lunar_Lander> and there were like theory of relativity deniers?
[13:19] <mfa298> looks like impedance of a capacitor equation
[13:19] <fsphil> Einstein's only mistake was probably the hairstyle
[13:19] <Lunar_Lander> xD
[13:19] <Lunar_Lander> oh wait
[13:19] <fsphil> also smoking
[13:19] <Lunar_Lander> I got something awesome
[13:20] <Lunar_Lander> http://scienceblogs.de/astrodicticum-simplex/2013/03/23/albert-einstein-und-die-gemeinsame-sprache-der-wissenschaft/
[13:20] <Lunar_Lander> the text isn't important, the youtube video is
[13:20] <Lunar_Lander> einstein talking
[13:20] <Lunar_Lander> it is bad english but he talks!
[13:23] <chrisstubbs> willdude123, got the arm and VB talking :D
[13:25] <griffonbot> @daveake: Portable tracking station in an unused Peli case http://t.co/Hr7IcegCPQ #UKHAS [http://twitter.com/daveake/status/318715825567715329]
[13:26] <fsphil> very nice
[13:26] <cuddykid> nice!
[13:27] <fsphil> does having the laptop surrounded by foam cause any heat problems?
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[13:27] <daveake> Yeah I should cut some grooves for air flow
[13:27] <daveake> In current weather I can't see there being an issue :)
[13:32] <cuddykid> want to do a launch this week - but nothing is ready! :(
[13:32] <cuddykid> (typical)
[13:32] <chrisstubbs> sod it none of the right motors move when you click the buttons :P Im going for lunch
[13:36] <cuddykid> tempted to do a launch just for the hell of it - but it's justifying the expensive that is the hard bit :P
[13:38] <cuddykid> has someone put an 'april fools' on the predictor site?!?
[13:38] <cuddykid> http://habhub.org/predict/#!/uuid=2422b200de68efd2dc2cf5eb3110f86444511a18
[13:38] <daveake> hah
[13:39] <cuddykid> ah yes (just noticed top right) - very clever :P
[13:39] <daveake> Click the bright red text top-right :)
[13:41] <fsphil> naturally the red button is hidden on my low resolution screen :)
[13:44] <chrisstubbs> aha
[13:49] <cuddykid> ah nice prediction (not the prank bit): http://habhub.org/predict/#!/uuid=b6a91ecae45c390b140e5bdb9011d5ee7f9c519e
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[13:59] <chrisstubbs> "a laptop plugged into a wi-fi system" my respect for the BBC is dropping
[13:59] <chrisstubbs> what with that and the "special" effects in the latest doctor who, they made me laugh
[14:00] <fsphil> hacker typing
[14:00] <chrisstubbs> yeah, and the motorbike
[14:00] <fsphil> I liked that bit :)
[14:02] <Lunar_Lander> do you have something like die sendung mit der maus in britain?
[14:02] <Lunar_Lander> it is a show that explains like how things are made and stuff to kids
[14:02] <chrisstubbs> we have "how its made" on discovery
[14:02] <Lunar_Lander> even difficult topics like nuclear power
[14:02] <chrisstubbs> not aimed at kids though
[14:02] <chrisstubbs> "how stuff works" also
[14:02] <Lunar_Lander> yea
[14:02] <daveake> Yeah I starred in one :p
[14:03] <Lunar_Lander> cool!
[14:03] <Lunar_Lander> https://en.wikipedia.org/wiki/Die_Sendung_mit_der_Maus
[14:03] <chrisstubbs> :O what one daveake?
[14:03] <Lunar_Lander> "A number of the educational segments have also dealt with difficult topics, such as life in Germany in the aftermath of World War II,[18] the Chernobyl nuclear disaster[5][29] and death."
[14:03] <daveake> Cracking The Code surely everyone here watched it? :)
[14:04] <fsphil> Lunar_Lander: I remember a song about that mouse
[14:04] <daveake> I mean it was only on at 5am I'm sure you were all up specially :)
[14:04] <Lunar_Lander> was it like a Rap song?
[14:04] <fsphil> used to see it on german TV
[14:04] <fsphil> can't remember now
[14:04] <chrisstubbs> oh yeah i saw that :) thought you mean how its made on discovery :P
[14:04] <fsphil> just remember the figure
[14:04] <Lunar_Lander> fsphil, https://www.youtube.com/watch?v=D9ATffcUOns
[14:05] <fsphil> Lunar_Lander: yea that's it :)
[14:06] <DanielRichman> "show that explains like how things are made and stuff to kids" -- http://www.youtube.com/watch?v=gaI6kBVyu00
[14:07] <Lunar_Lander> :)
[14:07] <Lunar_Lander> it's crazy
[14:07] <fsphil> that show is awesome DanielRichman
[14:07] <Lunar_Lander> that song is back from 1996
[14:07] <Lunar_Lander> that is when I started school
[14:07] <DanielRichman> I couldn't find the full episode in my first google. I swear they used to all be on YT
[14:07] <fsphil> yea, they keep getting taken down
[14:08] <DanielRichman> ah, fair enough
[14:08] <Lunar_Lander> btw
[14:08] <Lunar_Lander> I remember there was an australian show with I think Bill Nye
[14:08] <Lunar_Lander> if he is called like that
[14:09] <Lunar_Lander> also explaining science
[14:09] <Lunar_Lander> and someone once posted here a show with Rex Garrod of Robot Wars explaining things
[14:09] <fsphil> like some kind of, science guy?
[14:09] <Lunar_Lander> the secret life of... it was called
[14:09] <Lunar_Lander> yeah
[14:10] <Lunar_Lander> the curiosity show
[14:10] <Lunar_Lander> I am sure it was broadcast in germany
[14:11] <fsphil> I don't think Bill Nye is australian
[14:11] <Lunar_Lander> hm
[14:11] <Lunar_Lander> do you know the symphony of science?
[14:12] <Lunar_Lander> http://symphonyofscience.com/
[14:12] <Lunar_Lander> look at the bottom, "The Greatest Show on Earth"
[14:12] <Lunar_Lander> and then at 19 seconds
[14:12] <Lunar_Lander> I was like sure that this was on german tv once
[14:12] <fsphil> I suspect I've just use up my months worth of internet already, better not download anything else :)
[14:12] <Lunar_Lander> oh
[14:17] <Lunar_Lander> XD Google Nose
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[14:25] <cm13g09> Lunar_Lander: you've seen BMW, right?
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[14:26] <cm13g09> afternoon craag
[14:27] <Lunar_Lander> what is about BMW?
[14:27] <daveake> https://www.bmw.co.uk/en/publicPools/campaign-pages/bmw-pram/bmw-pram-maam.html
[14:27] <cm13g09> thanks daveake
[14:27] <Lunar_Lander> LOOOOL
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[14:28] <cm13g09> they *always* come up with something good
[14:28] <cm13g09> (we must always remember Magnetic Tow Technology from 2008?)
[14:28] <Lunar_Lander> XD
[14:28] <cm13g09> Lunar_Lander evidently does
[14:29] <Lunar_Lander> no
[14:29] <Lunar_Lander> but it sounds funny
[14:29] <chrisstubbs> that look around you thing is fantastic :P
[14:29] Action: cm13g09 goes rummaging
[14:29] <cm13g09> http://www.bmweducation.co.uk/coFacts/linkDocs/magnetic_tow_technology.asp
[14:30] <cm13g09> That one needed an email to Uve.Vollenvorit@bmw.{your local suffix}
[14:30] <fsphil> lol
[14:30] <cm13g09> chrisstubbs: that Guardian's one?
[14:30] <fsphil> Joe King has been really busy today
[14:30] <cm13g09> fsphil: yeah
[14:30] <daveake> cm13g09 All BMWs have apparently had that technology for years :)
[14:31] <cm13g09> daveake: really?
[14:31] <daveake> Have you seen the average distance between any BMW and the car in front? :)
[14:31] <cm13g09> lol
[14:31] <cm13g09> yeah
[14:31] <chrisstubbs> oh no BBC "look around you"
[14:31] <cm13g09> good point
[14:32] <cm13g09> chrisstubbs: got a link?
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[14:32] <chrisstubbs> cm13g09, http://www.youtube.com/watch?v=gaI6kBVyu00
[14:33] <cm13g09> I'll watch it later
[14:33] <chrisstubbs> DanielRichman sent it earlier
[14:33] <cm13g09> I'm supposed to be working....
[14:33] <chrisstubbs> lol
[14:34] <chrisstubbs> I wonder how much money has been lost by companies due to their workers being on this IRC channel all day
[14:34] <cm13g09> this is worse: it's uni work :P
[14:34] <cm13g09> although I can see that I'm going to be lurking in IRC from work next year
[14:35] <cm13g09> (I was last year at London 2012 ;) )
[14:37] <cm13g09> why is it that things break at (actual) work when the sysprog isn't around
[14:38] <cm13g09> I'm 4th line support essentially - but I get all the monitoring alerts
[14:38] <cm13g09> and when things go belly up this week, I'll probably end fixing them :(
[14:41] Nick change: Mission-Critical -> MissionCritical
[14:41] Action: jcoxon has added 3axis accelerometer to his toy helicopter
[14:41] Nick change: russss_ -> russss
[14:42] <SpeedEvil> woo!
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[14:42] <SpeedEvil> I wish you could get proper accelerometer chips.
[14:42] <Lunar_Lander> daveake, when did cracking the code air?
[14:42] <SpeedEvil> ones that supported writing.
[14:42] <jcoxon> SpeedEvil, its graphing nicely in processing as wel
[14:42] <jcoxon> much better then just seeing numbers
[14:43] <jcoxon> monitoring acceleration and also voltage
[14:43] <Lunar_Lander> hi jcoxon
[14:45] <jcoxon> hey
[14:51] <daveake> Lunar_Lander About the 3 weeks ago. It'll be online permanently :p at http://www.bbc.co.uk/programmes/p01661f7
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[14:51] <daveake> s/the//
[14:51] <Lunar_Lander> thanks daveake
[14:52] <daveake> If it's blocked (and I think it is) you can d/l from http://www.daveakerman.com/dl/Cracking%20The%20Code%20-%20Weather%20Balloon.wmv
[14:52] <chrisstubbs> lets watch this again, why not :P
[14:52] <daveake> hah
[14:52] Action: jcoxon finds a gps module...
[14:52] <jcoxon> overkill for my indoor helicopter
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[14:54] <fsphil> good to think ahead jcoxon
[14:56] <jcoxon> i've got a IR range finder
[14:57] <jcoxon> but the helicopter is IR too
[14:57] <jcoxon> so suspect there might be interferance
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[15:00] <Lunar_Lander> daveake, wow thanks
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[15:04] <cuddykid> looks like I've finally fixed my hexacopter motor/esc issues (fingers crossed)
[15:04] <cuddykid> just hope I don't have motor failure mid-flight as the thing would just drop out the sky
[15:06] Action: cm13g09 thinks he needs to change radio station - that was the most awful joke ever....
[15:11] <chrisstubbs> yay :D robot arm control is working
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[15:28] <Morseman> Had to go shopping and swimming - did I miss anything?
[15:28] <chrisstubbs> errrrmmmm...
[15:29] <chrisstubbs> minimal HABstuff
[15:30] <chrisstubbs> jcoxon and cuddykid have been playing with copters etc
[15:30] <chrisstubbs> and i have been rewriting the control program for the robot arm
[15:30] <cuddykid> :)
[15:31] <Lunar_Lander> yea and we learned that Water + Nitrogen is Whiskey from a strange BBC show
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[15:33] <chrisstubbs> well my vb program for local control works, now time to network it with a webcam feed
[15:35] <Lunar_Lander> yay daveake in mission control once again
[15:35] <Lunar_Lander> cool wallpapers
[15:36] <chrisstubbs> the part where anthony answers the phone makes me laugh, i dont know why
[15:39] <Lunar_Lander> COOL there is the IRC when he explains the transmission time
[15:40] <willdude123> I have a vps until 24 april and I have no idea how to make the most of it because I don't need it anymore.
[15:40] <chrisstubbs> willdude123, SAMP server
[15:41] <willdude123> SAMP?
[15:41] <Lunar_Lander> at 5:40
[15:41] <Lunar_Lander> what is on the third screen from the left?
[15:41] <chrisstubbs> san andreas multiplayer. Very OT though :P
[15:41] <chrisstubbs> Lunar_Lander, printscreen it
[15:42] <willdude123> I don't do GTA.]
[15:42] <chrisstubbs> ahhh fair play, MC?
[15:42] <willdude123> Not much, that's what I had it for.
[15:42] <Lunar_Lander> http://s.gullipics.com/image/g/2/9/5yv8hp-kn1h4x-y4cq/vlcsnap2013040117h42m12s240.png
[15:42] <willdude123> But I don't do it anymore.
[15:42] <chrisstubbs> looks like SDR software
[15:43] <chrisstubbs> for an FCD maybe?
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[15:44] <willdude123> I remember seeing that on tv Lunar_Lander.
[15:44] <Lunar_Lander> yea
[15:44] <Lunar_Lander> "Can we talk to Dave?"
[15:44] <fsphil> Lunar_Lander: sdrsharp
[15:44] <Lunar_Lander> xD
[15:44] <Lunar_Lander> ah
[15:45] <Lunar_Lander> XD there is the chat!
[15:45] <willdude123> He was using x-chat
[15:45] <Lunar_Lander> yeah
[15:45] <Lunar_Lander> I have that too
[15:45] <willdude123> I use Irssi.
[15:46] <fsphil> one thing linux has no shortage of, irc clients
[15:46] <willdude123> Seriously, I have a 1.5gb VPS and I need to do something handy with it.
[15:46] <willdude123> It's bugging me.
[15:46] <willdude123> Maybe for a python shell at school.
[15:47] <willdude123> That doesn't make use of the high amount of ram,
[15:47] <mfa298> willdude123: you could use it to try out running webservers of various web apps
[15:47] <willdude123> Everyone seems to like DDoSing now.
[15:47] <mfa298> or try out different distributions
[15:47] <willdude123> Maybe.
[15:48] <willdude123> You can only use ubuntu and debian though.
[15:48] <willdude123> U thought about mining bitcoins, but that's complicated.
[15:48] <willdude123> Maybe SETI@hom.
[15:48] <mfa298> DDOS attacks have been around for years. Nothing new with them.
[15:48] <willdude123> Not sure if SETI at home is actually worthwhile.
[15:49] <mfa298> things like bitcoin and potentially seti@home may not work as well on a vps - bitcoin at least works best with a gpu not a cpu
[15:50] <willdude123> Meh.
[15:50] <mfa298> seems surprising that the only offer ubuntu and debian. Most vps's I've come accross tend to have a large number of distros (Gentoo, CentOS, Fedora and sometimes a BSD /Solaris)
[15:58] <willdude123> Maybe they had scientific linux too.
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[16:11] <cuddykid> why don't you just sell web hosting if you can't think of anything else to do with it?
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[16:32] <ibanezmatt13> Good Afternoon :)
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[16:33] <ibanezmatt13> I have decided to start learning C :\ I was wondering whether anybody knew of a decent C IDE for windows 8. I currently have notepad++ installed but I can't seem to get it to compile and debug. Any ideas?
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[16:34] <ibanezmatt13> I have decided to start learning C :\ I was wondering whether anybody knew of a decent C IDE for windows 8. I currently have notepad++ installed but I can't seem to get it to compile and debug. Any ideas?
[16:35] <mfa298> ibanezmatt13: I think you can get a free version of visual studio
[16:35] <ibanezmatt13> yeah, I've got visual C++. But it won't debug for some reason
[16:35] <mfa298> I suspect notepad++ on it's own doesn't have a compiler
[16:35] <ibanezmatt13> probably not, I'll keep trying visual studio
[16:35] <mfa298> there should be a button somewhere to build project
[16:36] <mfa298> which should give you an executable file to run
[16:36] <ibanezmatt13> I'll give it a go, thanks
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[16:37] <mfa298> if you're writing simple software (e.g. hello world) you might need to run it from a command prompt to see anything
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[16:38] <ibanezmatt13> I am trying the hello world. In c++, it uses cpp files. Will that be ok because I just want to do c, as in .c files
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[16:50] <ibanezmatt13> none of the programs i am using are compiling and running a very simple c program
[16:51] <ibanezmatt13> I've tried visual studio, dev c++, notepad++, vim....
[16:51] <ibanezmatt13> I can't get them to compile anything
[16:51] <Randomskk> there is one common factor then
[16:51] <Randomskk> it sounds like you're probably doing something wrong.
[16:51] <Randomskk> what are you doing?
[16:51] <ibanezmatt13> I am opening the program, writing a hello world program, saving it to the desktop and attemting to run it
[16:52] <Randomskk> are you at any point compiling?
[16:52] <ibanezmatt13> no, I am trying to but it keeps saying "cannot compile"
[16:52] <Randomskk> it probably also says why it cannot compile
[16:52] <Randomskk> likely with an error message
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[16:52] <ibanezmatt13> there is no error message
[16:53] <ibanezmatt13> shall i try it out now, which program shall i use
[16:53] <Randomskk> vim and notepad++ are not compilers
[16:53] <Randomskk> I think you're missing something crucial, probably
[16:53] <Randomskk> it should be like this
[16:53] <Randomskk> you write some code to a .c file, which is plain text
[16:53] <Randomskk> that code must be valid C - perhaps paste the code so we can see
[16:53] <Randomskk> then you save that file
[16:54] <Randomskk> a compiler runs against that file, producing executable output - a program.exe file
[16:54] <Randomskk> then you run that .exe file
[16:54] <Randomskk> vim, notepad++ are just text editors
[16:54] <ibanezmatt13> ok, I've written the program as a .c
[16:54] <Randomskk> visual studio is an IDE, which means it has a C compiler and a text editor, with some integration between them, so that you can click a 'compile' button inside visual studio and it'l run the compiler for you, and sometimes even execute the result
[16:55] <ibanezmatt13> i use visual studio c++. Is c++ different to standard c, will it affect my programs
[16:55] <Randomskk> they are different languages
[16:55] <ibanezmatt13> i need a compliler which compiles C
[16:55] <Randomskk> but in general C code is valid C++ code (but not the other way around)
[16:55] <Randomskk> so you should be fine
[16:56] <ibanezmatt13> i see, do you know of any c compilers?
[16:56] <ibanezmatt13> oh of course, vis studio
[16:56] <Randomskk> visual studio includes a C(++) compiler
[16:56] <Randomskk> so that should be fine.
[16:57] <ibanezmatt13> so in vis studio, i write my code, then i guess i just hit run
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[16:57] <ibanezmatt13> vis studio saves the files as .cpp. I guess that doesn't matter
[16:57] <griffonbot> Received email: Jens Pirnay "[UKHAS] Strange wind forecasts..."
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[17:03] <mfa298> ibanezmatt13: for a plain hello world program it shouldn't matter if it's done as c or c++
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[17:03] <ibanezmatt13> yeah, thanks, i see
[17:03] <mfa298> in general anything written in C can be compiled by a c++ compiler (but not the other way around)
[17:04] <fsphil> lol, "why pink"
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[17:05] <Randomskk> hah, I think the other "erratic wind condition" was a bit too subtle
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[17:05] <fsphil> it's well done
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[17:06] <mfa298> the payload for that first prediction appears to have a lot of drag.
[17:06] <fsphil> slashdot is vastly better now that I can't read it
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[17:08] <fsphil> my hourly is also a joke today: http://hourly.sanslogic.co.uk/
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[17:08] <Randomskk> fsphil: haha
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[17:10] <Randomskk> fsphil: funny, the one off disagrees with your hourly ;) http://habhub.org/predict/#!/uuid=7f707624fc33bc1936bafae7cb5a2928d919748e
[17:11] <cm13g09> do I get a sense of April Fools jokes with the predictor?
[17:11] <cuddykid> lol "vm > emacs"
[17:12] <cuddykid> vim rather
[17:12] <daveake> hah just read the "why pink" email :)
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[17:12] <daveake> Such a silly question :p
[17:13] <Randomskk> you know why upu started the pink payloads?
[17:13] <daveake> Actually, no.
[17:13] <Randomskk> a bet with DanielRichman
[17:13] <Randomskk> that he lost
[17:13] <daveake> hah
[17:13] <arko> hahaha!
[17:13] <arko> nice!
[17:14] <arko> love the april fools prank
[17:14] <Randomskk> daveake: we had a server running centos, we wanted ubuntu, but there was no remote admin interface so no backup access and no way to mount a CD or anything
[17:14] <DanielRichman> (he later told me that he was planning on making it pink anyway)
[17:14] <DanielRichman> but it's certainly true he lost a bet
[17:15] <Randomskk> hehe
[17:15] <jcoxon> to be fair not many people could pull off what DanielRichman did
[17:15] <x-f> there are several weird flight paths!
[17:16] <x-f> this is awesome
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[17:24] <fsphil> has anyone build a transmitter using an AD8345?
[17:24] <fsphil> built*
[17:27] <fsphil> seems like it would be simple to do qpsk with it
[17:27] <fsphil> and a small amp
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[17:31] Nick change: bertrik_ -> bertrik
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[17:31] <arko> http://i.imgur.com/m2TLchB.jpg
[17:31] <arko> one of our guys got so close!
[17:31] <arko> looks like it wont be so bad
[17:32] <arko> but it's gonna get much harder near the last 2-3 miles
[17:32] <fsphil> it should at least stand out from the terrain
[17:33] <chrisstubbs> willdude123, just burnt me with the robot arm and a lighter
[17:33] <fsphil> that really is a lot of nothing there
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[17:36] <arko> fsphil yeah
[17:36] <arko> its HUGE
[17:37] <arko> on a map you're like meh
[17:37] <arko> then you go out there and go
[17:37] <arko> "oh wow, that mountain isn't even on the horizon..''
[17:37] <arko> "loooked much closer on the map..
[17:37] <arko> "
[17:38] <fsphil> I had a similar experience in the yorkshire dales. "Oh I'll just walk between the two predicted points, gotta be there somewhere"
[17:38] <fsphil> standing there... "Oh that's a mountain"
[17:38] <arko> hahaha
[17:38] <fsphil> not the same scale as there no doubt, but still *huge*
[17:38] <fsphil> and a lot more sheep
[17:39] <arko> ride them to the location
[17:39] <daveake> That flight I did oop north landed on a Yorkshire hillside 150m from the road, and that was hard enough to get to
[17:39] <arko> we are trying to get horses to recover ours
[17:39] <arko> since it's a wilderness area and cars are illigal
[17:39] <Randomskk> oh nice
[17:39] <fsphil> don't tell top gear
[17:40] <Randomskk> horseback recovery'd be cool
[17:40] <fsphil> maybe they'll all get arrested
[17:40] <daveake> We'll need some new icons for spacenear
[17:40] <cuddykid> some sort of drone would be handy to fly over and see if it can spot anything
[17:41] <arko> it should be a pink box flying!
[17:41] <fsphil> totally need to do a drone with a radio relay
[17:41] <fsphil> launch it a few minutes before landing
[17:41] <arko> yeah, thats the other thing we are thinking
[17:41] <arko> but it would suck to lose a drone and a hab
[17:42] <fsphil> true, although if the payload is still transmitting the drone would only need to go up high enough
[17:42] <arko> yeah!
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[17:47] <cuddykid> could stick a spot transmitter on the drone [if you had an unlimited supply of money] :)
[17:47] <arko> yeah
[17:47] <arko> we are looking into getting sponsers
[17:48] <Lunar_Lander> daveake, I still have to say
[17:49] <Lunar_Lander> your mission control is cool
[17:49] <arko> is that the truck with laptops in the back?
[17:51] <fsphil> that's the ihab truck
[17:51] <arko> OZ peeps right?
[17:51] <fsphil> iowa
[17:52] <arko> oh nice
[17:52] <arko> for some reason i thought it was Darkside's people
[17:52] <daveake> I think LL means my office. arko you're thinking of Darkside's
[17:52] <arko> got it
[17:52] <arko> you have a cool mission control?
[17:52] <Lunar_Lander> yea
[17:52] <arko> linky?
[17:52] <daveake> Well my office has a few screens :)
[17:53] <arko> ah
[17:53] <arko> nice :P
[17:53] <daveake> http://www.daveakerman.com/wp-content/uploads/2012/07/P1040573-1024x682.jpg
[17:53] <daveake> Upu's on the left
[17:54] <arko> haha
[17:54] <arko> that desk
[17:54] <fsphil> facebook'ing instead of doing the important mission control stuff
[17:54] <cuddykid> good to see the soldering iron at the ready for any emergencies
[17:54] <Lunar_Lander> the mousepad is awesome
[17:54] <daveake> My 4x4 - http://www.daveakerman.com/wp-content/uploads/2013/03/IMG_1483-1024x768.jpg. Not as many screens as Darkside's :p
[17:54] <arko> fsphil: imagine if nasa did that
[17:54] <fsphil> actually my desk is tidy atm
[17:54] <arko> woah nice
[17:54] <arko> NASA mug
[17:55] Action: Lunar_Lander gets a guitar
[17:55] <Lunar_Lander> Dave is cool
[17:55] <arko> fsphil: Upu: let me know if you guys want a JPL mug
[17:55] <Lunar_Lander> the coolest guy in England
[17:55] <Lunar_Lander> and that is so awesome that I stand in awe
[17:55] <fsphil> arko: letting you know :)
[17:55] <daveake> Latest addition - portable tracking station http://www.daveakerman.com/wp-content/uploads/2013/04/P1070667-682x1024.jpg
[17:55] <cuddykid> daveake: how is that android tab connected to the dashboard? Been looking for an iPad car holder but can only find suction (windscreen) mounts
[17:55] <arko> it's probably an ITAR regulated mug knowing jpl amirite eroomde?
[17:56] <daveake> Brodit. If you want to attach a phone/pad/whatever to a car, Brodit will probably do it better than anyone
[17:56] <cuddykid> cheers, I'll have a look
[17:56] <willdude123> daveake: Are all those screens running off one computer?
[17:56] <cuddykid> don't fancy the iPad falling on the floor when going down the motorway :P
[17:56] <daveake> The top screen is a touchscreen on the car PC. Below is a tablet
[17:57] <daveake> Upu had his laptop and my netbook on his side
[17:57] <Gadget-Mac> Upu: around ?
[17:58] <willdude123> daveake: Would it be possible to use the raspberry pi as an SDR receiver, and then get it to output it as jack or send it over the network?
[17:58] <willdude123> *through a jack lead.
[17:58] <daveake> I think that's been done
[17:59] <fsphil> there's a program called rtl_tcp that will dump the data from the rtl-sdr dongles over at network
[17:59] <Lunar_Lander> daveake, how did you like my song for you?
[17:59] <fsphil> but you can't do any kind of processing or decoding on the Pi itself
[17:59] <fsphil> at least not yet
[18:00] <griffonbot> Received email: Chris Stubbs "[UKHAS] Proposed launch of NSE1 13th April 2013 9AM"
[18:00] <chrisstubbs> :)
[18:00] <willdude123> Lunar_Lander: Your song for him?
[18:01] <Lunar_Lander> yes
[18:01] <cuddykid> daveake: this company is fantastic! Thanks for the recommendation - just what I was looking for
[18:01] <Lunar_Lander> <Lunar_Lander> Dave is cool
[18:01] <Lunar_Lander> <arko> fsphil: Upu: let me know if you guys want a JPL mug
[18:01] <Lunar_Lander> <Lunar_Lander> the coolest guy in England
[18:01] <Lunar_Lander> <Lunar_Lander> and that is so awesome that I stand in awe
[18:01] <fsphil> cuddykid: not trying for 1.5 Lunars at least?
[18:01] <willdude123> We all need Upu from time to time.
[18:01] <fsphil> er
[18:01] <fsphil> chrisstubbs: ^^
[18:01] <mfa298> willdude123: a few of us have run rtl_tcp on the pi but that just streams the raw data over the network for something else to decode
[18:02] <mfa298> I'm not sure the pi has the cpu power to run most current sdr decoders
[18:02] <daveake> cuddykid Yes their stuff is really good quality
[18:02] <willdude123> Thinking of getting a beagleboard.
[18:02] <fsphil> smart people may do interesting things with the GPU on the Pi eventually
[18:02] <cuddykid> daveake: they do a custom clip for the mini too! brilliant
[18:02] <fsphil> cuddykid: clio too. I'm tempted
[18:03] <Randomskk> fsphil: can the pi gpu do opencl?
[18:03] <mfa298> fsphil: that seems to be the way to go although there doesn't seem to be a lot of info out there on using the gpu
[18:03] <daveake> Yes, aside from the quality, the main thing is you get a custom mount for the car plus a custom holder for the phone or table
[18:03] <daveake> t
[18:03] <cuddykid> definitely going to get one - will be so helpful, especially when I'm chasing alone
[18:03] <mfa298> and the gpu seems to be the more propriatry bit
[18:03] <chrisstubbs> fsphil, aha no i cheaped out on the balloon :(
[18:03] <chrisstubbs> if it all works ok we will go again with a bigger balloon and better camera
[18:04] <fsphil> I've got a little 600g here that should manage 1 Lunar
[18:04] <fsphil> if conditions ever improve
[18:04] <Randomskk> boo. I don't think rpi can do opencl
[18:04] <chrisstubbs> brb gotta sort dinner
[18:05] <fsphil> there's some stuff on github about reverse engineering it
[18:05] <fsphil> I've lost the link
[18:05] <cuddykid> where did you order from daveake ?
[18:06] <daveake> http://www.holdersandmounts.co.uk/Last time, direct from Brodit UK
[18:06] <daveake> er
[18:06] <daveake> http://www.holdersandmounts.co.uk/
[18:07] <mfa298> Randomskk: my impression was the pi gpu was one of the bits under the NDA so there's not much info about it :(
[18:07] <cuddykid> thanks daveake
[18:08] <Randomskk> shame
[18:09] <mfa298> it looks like there's some sample code for the gpu in /opt/vc on a rasbian install. although other than compiling them I've not got much further
[18:09] <fsphil> https://github.com/hermanhermitage/videocoreiv/
[18:09] <fsphil> little of that makes sense to be
[18:09] <fsphil> me*
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[18:13] <Upu> ping arko JPL mug would compliment my NASA mug nicely thx :)
[18:14] <arko> next time im at that side of the lab i will do
[18:14] <fsphil> how big's the lab?
[18:14] <fsphil> crap, I've now got the Dexters Lab theme in my head
[18:14] <fsphil> again
[18:14] <arko> dude
[18:14] <arko> it's on netflix now
[18:15] <arko> <3
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[18:15] <mfa298> fsphil: that looks like it could be interesting - one of these days I might get around to learning more about gpu programming
[18:15] <fsphil> arko: did you see the unaired episode on youtube?
[18:16] <arko> ohh
[18:16] <arko> nope
[18:16] <arko> mfa298: https://www.udacity.com/course/cs344
[18:16] <arko> ^^^ great course
[18:17] <fsphil> boo, it's marked private now
[18:18] <arko> im sure someone made a mirror
[18:19] <fsphil> https://www.youtube.com/watch?v=CVbkZ8I6nAQ
[18:20] <arko> i do not own Dexters Lab nor have any rights to it
[18:20] <arko> this is for non-profit entertainment only , i make no profit.
[18:20] <arko> hahaha
[18:20] <arko> i love these
[18:21] <arko> "no copyright infringement intended"
[18:21] <fsphil> they say, after copying it
[18:22] <arko> "i didnt mean to! dont sue me!
[18:22] <arko> "
[18:22] <daveake> That usually means "I know I'm infringing copyright but I'm not making money on it in fact I have no money so no point sueing me"
[18:23] <arko> wow this episode
[18:23] <fsphil> yea!
[18:23] <arko> hahaha
[18:23] <arko> no wonder it never aired
[18:23] <fsphil> it's beeping great
[18:23] <griffonbot> Received email: STRATODEAN "[UKHAS] Proposed launch of STRATODEAN 14th April 2013 10AM"
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[18:27] <jcoxon> charge silly helicopter
[18:28] <fsphil> patience :)
[18:28] <fsphil> what kind is it?
[18:29] <jcoxon> http://www.tesco.com/direct/silverlit-heli-sniper/546-8959.prd?pageLevel=&skuId=546-8959
[18:29] <jcoxon> though it now doesn't have missles
[18:29] <jcoxon> but does have 3 axis accel, ultrasound distance sensor, arduino, 868mhz radio
[18:30] <chrisstubbs> wow, im surprised it has enough lift for all of that
[18:30] <fsphil> wow indeed
[18:30] <fsphil> can't beat that price either
[18:30] <jcoxon> yeah its struggling a little bit
[18:30] <jcoxon> thats why i got it
[18:30] <jcoxon> for a fun project
[18:30] <chrisstubbs> :)
[18:30] <jcoxon> so i have it sending data via radio
[18:31] <jcoxon> and then got processing to graph it
[18:32] <jcoxon> rolling graph so it looks pro
[18:33] <arko> dude!
[18:33] <arko> thats epic
[18:33] <arko> are you going to document it?
[18:33] <jcoxon> sure
[18:33] <jcoxon> when i find a camera
[18:33] <arko> :)
[18:34] <chrisstubbs> ooo
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[18:36] <jcoxon> the ultrasound sensor makes nice landing pads
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[19:05] <jcoxon> yay it works better
[19:05] <jcoxon> but really does need charged batteries
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[19:08] <cuddykid> had a very successful hexacopter flying time :) (despite almost flying the thing into me)
[19:09] <jcoxon> cuddykid, awesome
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[19:09] <cuddykid> finally learning to control the thing
[19:20] <willdude123> Trying to install a web ssh client onto my server so I can get IRC at school.
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[19:24] <griffonbot> Received email: Chris Stubbs "[UKHAS] Re: Proposed launch of NSE1 13th April 2013 9AM"
[19:29] <chrisstubbs> Hm. on the calendar my frequency is displayed as "NSE 434.6265MHz"
[19:30] <willdude123> chrisstubbs: Anything different about the payloads?
[19:30] <chrisstubbs> oh seems i buggered that up on the payload conifg :/ think that will be a problem? the correct freq is 434.650 (just below)
[19:30] <willdude123> chrisstubbs: Except frequency.
[19:31] <jonsowman> chrisstubbs: makes no difference at all, but publish a new payload config if you like
[19:31] <chrisstubbs> willdude123, one is my first thru-hole tracker with NTX2 and u p u's MAX6 module
[19:31] <chrisstubbs> ok cheers jonsowman will update that now :)
[19:31] <willdude123> What's MAX6?
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[19:32] <chrisstubbs> ublox gps
[19:32] <jonsowman> chrisstubbs: when you've done it, send me the new payload doc id
[19:32] <willdude123> What's a thru-hole?
[19:32] <jonsowman> and i'll update your flight doc
[19:33] <chrisstubbs> done, thank you :)
[19:33] <willdude123> Upu: Do you think I'll have all the stuff by the weekend?
[19:33] <chrisstubbs> willdude123, components with legs that you put through holed on the PCB. as opposed to SMD which is mouted directly onto the pcb
[19:33] <Upu> Aiming for it
[19:34] <willdude123> Cool. Will I be able to test it by asking someone to briefly transmit something?
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[19:35] <Upu> may be a luanch to track
[19:36] <chrisstubbs> willdude123 my flight and s_mark (stratodean) are flying weekend after next
[19:36] <chrisstubbs> im saturday and he is sunday
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[19:38] <daveake> And possibly me next weekend
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[19:41] <chrisstubbs> just to clarify, does "next weekend" clarify as the 6th or the 13th?
[19:42] <daveake> 6th/7th
[19:42] <chrisstubbs> ok cool :)
[19:43] <chrisstubbs> is that the double SSDV Pi then dave?
[19:44] <daveake> yup
[19:44] <daveake> Need all the listeners I can get :)
[19:44] <fsphil> PiPi
[19:44] <chrisstubbs> weekend launches are fine for me tracking wise
[19:44] <chrisstubbs> cant track from work on weekdays
[19:44] <daveake> I should label the NTX2s "Steak" and "Kidney"
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[19:45] <chrisstubbs> unless its wednesday and i can use logmein on my phone, but thats horrible to track on :(
[19:46] <willdude123> daveake: I'll try my best to be ready to listen.
[19:46] <willdude123> daveake: Does it also take higher res images that won't be broadcast?
[19:47] <daveake> It will yes
[19:47] <Upu> Want to get you up and running for that as you are very close to Daves
[19:48] <daveake> That would be great
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[19:49] <chrisstubbs> no 3G this time?
[19:49] <daveake> No, this is a lightweight payload so the 3G had to go
[19:49] <chrisstubbs> fair enough
[19:50] <willdude123> daveake: How heavy is it?
[19:50] <daveake> Plus the Pi camera doesn't work with batc
[19:50] <willdude123> daveake: Is it to be flown under a floater?
[19:50] <daveake> 140g all in
[19:50] <daveake> The flight plan is to be decided :)
[19:50] <chrisstubbs> woah thats light
[19:51] <willdude123> daveake: What's batc?
[19:51] <Upu> live video from launch site
[19:52] <daveake> and landing site :)
[19:52] <willdude123> Can it only take stills?
[19:53] <daveake> No it can do video but it can't stream to batc
[19:53] <willdude123> Oh OK.
[19:53] <willdude123> How do I set dl-fldigi to save SSDV images?
[19:53] <daveake> If at some point someone makes the camera a V4L2 device then people will be able to use standard imaging and streaming programs. Till then we have to use the supplied programs
[19:53] <daveake> You don't; it's automatic
[19:54] <daveake> It will automatically decode and upload SSDV packets
[19:54] <daveake> You can see what its decoded via View --> SSDV
[19:54] <willdude123> Oh yeah.
[19:54] <daveake> Also in the config there's an option to save SSDV images locally, in case you want to do that
[19:55] <daveake> All uploaded image packets get collated so, like with the telemetry, it only needs 1 listener to receive each packet
[19:55] <willdude123> Any difference on the images from each frequency.
[19:55] <willdude123> ?
[19:56] <daveake> Yes each frequency carries its own set of images
[19:56] <daveake> There's a live web page showing all images from both channels
[19:56] <Upu> http://ssdv.habhub.org/
[19:57] <willdude123> Should I ask you to tell me what frequency to be on?
[19:57] <Upu> and http://www.batc.tv/streams/ukhas
[19:57] <willdude123> If there aren't enough on one.
[19:57] <Upu> I'll help you out there
[19:57] <Upu> I'll play flight director
[19:57] <daveake> Well, someone (e.g. an Upu type person) will play flight director
[19:57] <daveake> :)
[19:57] <fsphil> Upu is our resident HATC
[19:58] <mfa298> willdude123: reading a bit of scrollback, there's plenty of things you can listen to with the FCD to test you can recieve stuff before there's a flight.
[19:58] <number10> whats that. High Altitude Top Cat
[19:58] <fsphil> high altitude traffic controller
[19:59] <number10> aw officer dibble
[19:59] <jcoxon> hehe glad Upu has taken on the role of HATC
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[20:01] <daveake> He's most effectual
[20:06] <Upu> lol
[20:07] <willdude123> Whiskey India Lima Lima contact Delta Alfa Victor Echo One one on 4, 3, 4, point 0,7,5.
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[20:07] <Upu> Alpha
[20:07] <willdude123> :)
[20:07] <Upu> but keep at it :)
[20:07] <willdude123> Actually not Upu: https://en.wikipedia.org/wiki/File:FAA_Phonetic_and_Morse_Chart2.svg
[20:08] <willdude123> You should know, you're a ham.
[20:08] <Upu> Meh american
[20:08] <Upu> but yes I take i tback
[20:08] <Upu> seems you're correct
[20:08] <willdude123> There's a reason its called the INTERNATIONAL Radiotelephony Spelling Alphabet
[20:09] <Upu> careful or I won't send you your FCD
[20:09] <willdude123> Okay..
[20:09] <willdude123> I'll shut up.
[20:09] <willdude123> :)
[20:10] <mfa298> however if you ever listen to radio amateurs on HF you'll find lots of them dont use the reckognised pheonetics
[20:10] <willdude123> There's only so much phonetic alphabet to be learnt from Flight Simulator X.
[20:10] <mfa298> the annoying ones will use two different sets of words for the same letter in the same over
[20:14] <willdude123> Anywhere online that I can listen to hams?
[20:15] <willdude123> If I become a ham, will I be a hamlet, because wikipedia says a hamlet is a small ham?
[20:15] <mfa298> http://websdr.ewi.utwente.nl:8901/
[20:15] <mfa298> ^^ that's a fairly decent web SDR
[20:15] <mclane> Hi guys, I am looking for the VM for the hourly predictor; where can I find it?
[20:16] <willdude123> What frequency should I listen to?
[20:16] <Upu> its on the Wiki i think mclane
[20:16] <mfa298> once you've got the FCD you shoudl also be able to use that to listen to the various ham bands
[20:17] <mfa298> willdude123: best frequencies tend to vary with time of day and time of year, but around 14MHz (look for the 20m amateur band marking on that web sdr) can often be a good bet
[20:17] <willdude123> But I'll have to make a different antenna?
[20:17] <willdude123> It's not english so I won't know what's being said.
[20:17] <Upu> yep
[20:17] <Upu> generally english is used
[20:18] <mfa298> with the FCD you'll want different antennas for different bands, although I found 5m of cable pluged into my FCD+ with the cable thrown out a window did a reasonable job for HF.
[20:18] <Upu> also the FCD doesn't go down to 14Mhz ?
[20:19] <mclane> Upu: I cannot find it there, any additional hint ?
[20:19] <Lunar_Lander> what's FCD?
[20:19] <Upu> don't you need a down converter
[20:19] <Upu> fun cube dongle
[20:19] <Lunar_Lander> oh
[20:19] <Upu> http://ukhas.org.uk/guides:hourlypredictor
[20:19] <mfa298> Upu: ah, was that an addition for the FCD+
[20:19] <Upu> ah
[20:19] <Lunar_Lander> btw, the cracking the code segment was cool
[20:19] <Upu> speak to Hix
[20:19] <Upu> it seems he is the holder of the VM's
[20:21] <mclane> Upu: it says "There will soon be a VMWare player image of a standard setup on CentOS linked here."
[20:21] <mfa298> mclane: assuming it was you asking about the hourly, I think the VM is from chrisstubbs
[20:21] <willdude123> Can't get much on websdr,
[20:21] <mfa298> or if you want to do your own install I've got some notes
[20:23] <mclane> ok, I will ask chrisstubbs
[20:23] <Lunar_Lander> hi mclane
[20:24] <mclane> hi, LL
[20:24] <Lunar_Lander> how's life?
[20:24] <mclane> too cold, too windy, hope that changes until the weekend
[20:24] <willdude123> What are the big powerful signals on http://websdr.thecraag.com:8901/ ?
[20:24] <Lunar_Lander> yeah
[20:25] <craag> willdude123: FIZZLE testing. :)
[20:25] <craag> 300 baud rtty
[20:26] <willdude123> What's the bandwidth?
[20:26] <willdude123> In khz.
[20:27] <craag> willdude123: of the websdr?
[20:27] <willdude123> What should I select the bandwidth as?
[20:27] <willdude123> To listen to it?
[20:27] <mfa298> mclane: vmware image: http://tn22.com/chris.stubbs/www/ and my setup notes for doing it from scratch: http://hab.yapd.net/setup.html
[20:27] <craag> Shift is about 570hz
[20:28] <griffonbot> Received email: William Dover "[UKHAS] Re: Proposed launch of NSE1 13th April 2013 9AM"
[20:28] <craag> receive filter bandwidth should be about >=300 hz.
[20:28] <willdude123> Wait, so what should I set the bandwidth on websdr to?
[20:29] <craag> ah ok, default ssb is fine.
[20:29] <craag> so jsut click 'USB'
[20:29] <craag> It looks wider as the funcube is a little overloaded :)
[20:30] <willdude123> Is there a way to get audio in to dl-fldigi from websdr?
[20:30] <willdude123> On linux.
[20:30] <craag> I use pulseaudio, so I can select the speaker output as an input in dl-fldigi.
[20:32] <willdude123> Just hearing white noise on it atm.
[20:32] <mclane> thanks mfa298!
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[20:34] <willdude123> craag: Wait are you on 434190?
[20:34] <craag> willdude123: No, it's a bug in the websdr.
[20:34] <craag> I'm actually on ~869.5
[20:35] <mfa298> willdude123: with you're tuning where it is not you should hear some (not particularly pleasant noise)
[20:35] <mfa298> rather than white noise
[20:35] <willdude123> Can someone set it to the right frequency?>?
[20:35] <craag> 300 baud does sound a lot nastier than 50 baud :(
[20:36] <craag> willdude123: You were on the right one, on the right-hand side.
[20:36] <mfa298> willdude123: when you click on the top waterfall is changes youre frequency
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[20:36] <craag> I have had an issue with java on linux that it sometimes doesn't tune properly.
[20:37] <willdude123> Why does it start breaking out into white noise?
[20:37] <craag> willdude123: That's java mucking up :(
[20:38] <willdude123> Okay.
[20:38] <craag> Basically you might need to update java, but I wouldn't bother.
[20:38] <Upu> basically Java is evil
[20:38] <fsphil> always update java :0
[20:38] <craag> What Upu said :)
[20:39] <willdude123> This is all I get http://imgur.com/0Hwwgzy
[20:39] <mfa298> if you want to try it from the darkside I've not had as many issues with the websdr's from windows
[20:39] <Upu> nothing coming in there willdude123
[20:39] <craag> willdude123: That looks like a microphone input.
[20:39] <willdude123> Don't think it is.
[20:40] <willdude123> I'll check
[20:40] <Upu> yes willdude123 if you think I'm helping you getting an FCD working on Linux think again :)
[20:40] <daveake> looks like a mic input to me too
[20:40] <willdude123> It is.
[20:40] <daveake> That'll be why it looks like it then :)
[20:41] <willdude123> Upu: Do you not like linux?
[20:41] <Upu> yup love it
[20:41] <Upu> just not on the desktop thanks
[20:41] Action: mfa298 agrees with Upu
[20:41] <daveake> yeah I only use it on servers
[20:42] <daveake> and the odd flight computer :p
[20:42] <Upu> haha
[20:42] <Upu> well fair shout on that one
[20:42] <Upu> Windows would only want to install updates at 30,000 meters
[20:42] <willdude123> I installed pulse audio, and selected pulse, but it was the microphone.
[20:42] <daveake> Neither of which have monitors plugged in let alone a GUI :)
[20:42] <mfa298> I think I'd class flight computer as being closer to a server than a desktop
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[20:42] <daveake> indeed
[20:42] <craag> willdude123: You messed with your audio system.. oh dear.
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[20:43] <willdude123> It was already installed for some reason.
[20:43] <craag> oh phew!
[20:43] <craag> ok, so you need to tell pulseaudio to use your speaker output as an input.
[20:44] <willdude123> How?
[20:44] <craag> What distro are you using?
[20:45] <willdude123> Ubuntu LTS
[20:45] <craag> Ok, look for 'Pulseaudio Volume Control'
[20:45] <craag> This should bring up a window with a few tabs.
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[20:47] <craag> Might just be 'Volume Control'l
[20:47] <willdude123> No results for pulseaudio
[20:49] <craag> willdude123: Might just be the volume control panel. It should have a few tabs such as 'Recording', 'playback'
[20:50] <willdude123> There's sound settings?
[20:50] <willdude123> With input, outpu, sound effects
[20:51] <craag> Ok, in any of the tabs is there a mention of dl-fldigi? (assuming you have it running)
[20:52] <willdude123> Nope.
[20:52] <craag> darn.
[20:53] <craag> You don't happen to have an audio cable so you could plug your headphones into your line-in do you? :P
[20:53] <Lunar_Lander> wait
[20:53] <Lunar_Lander> he can download PulseAudio in the softwarecenter
[20:54] <willdude123> No.
[20:54] <willdude123> I did, I can't run it.
[20:54] <craag> He said he already had it installed, he just can't find the control panel.
[20:54] <craag> I'm on xubuntu 12.10, which seems to be rather different.
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[20:55] <willdude123> There's a pulseaudio button in dl-fldigi with a server string field.
[20:56] <jcoxon> as promised http://www.flickr.com/photos/jcoxon77/sets/72157633140371175/with/8610504507/
[20:56] <craag> willdude123: If you're getting the mic input, then that bit is already working.
[20:56] <craag> Now you need to tell pulseaudio which input to put through to dl-fldigi.
[20:56] <craag> And for that, you need it's control panel.
[20:56] <chrisstubbs> aha jcoxon i like it
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[20:58] <craag> willdude123: Open a terminal and type 'pavucontrol'
[20:59] <willdude123> Sure.
[20:59] <jcoxon> chrisstubbs, next step is reverse engineering the control protocol
[20:59] <craag> Then press enter, and it should open up the control panel.
[21:00] <mfa298> and as I've just found out (by mistake) routing the audio internally works much better than via the speakers and mic
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[21:01] <craag> mfa298: is it decoding for you?
[21:02] <willdude123> Got it.
[21:02] <mfa298> it is now that I got the settings right
[21:02] <willdude123> What now.
[21:02] <willdude123> ?
[21:03] <fsphil> in pavucontrol, under the recording tab
[21:03] <craag> willdude123: In the recording tab, there should an entry for dl-fldigi.
[21:03] <fsphil> you should see dl-fldigi if it's running
[21:04] <fsphil> there's a button on the right, click on it and select "Monitor of <name of your soundcard>"
[21:06] <_ed> Evening all, I've been talking to a friend of mine who I thought had the corecct radio set up for tracking,but he doesn't. Can anyone point me in the right direction for a decent cheapish 70 cm radio with side band
[21:06] <willdude123> Great, looks really squiggly.
[21:06] <willdude123> What are the settings?
[21:06] <mfa298> _ed: cheapest option is an rtl_sdr
[21:06] <jcoxon> _ed, if you want an actual radio then Ft790
[21:06] <craag> willdude123: 300 baud, 7n2
[21:07] <mfa298> _ed: but if you want a real radio then as jcoxon says or a favourite here is the FT817
[21:07] <willdude123> Shift?
[21:07] <craag> willdude123: about 600hz
[21:08] <fsphil> you can change the shift until you get something that matches the two yellow lines
[21:08] <willdude123> They look really squiggly and I'm just getting gobbledefgook
[21:08] <willdude123> *gobbledegook.
[21:08] <mfa298> willdude123: it's worth watching the lines as you change it - it's worth getting used to as in some flights it will change over time
[21:09] <willdude123> Oh, it's fizzle over and over again.
[21:09] <willdude123> Getting some weird characters in there.
[21:10] <_ed> I'm new to all of this my friend is a radio ham but got rid of all of his radios that were 70cm with side band. I've been looking for a ft 790 but can't seem to find one anywhere
[21:10] <jonsowman> they turn up on ebay occasionally
[21:10] <mfa298> willdude123: this is what it should look like https://dl.dropbox.com/u/14636926/hab/fizzle-sdr1.jpg
[21:10] <arko> looks like we will be holding a data analysis session tomorrow to try to figure out where it could have gone in those last 1000m
[21:10] <arko> for HABEX2
[21:11] <willdude123> I am getting the occasional FIZZ come through.
[21:11] <willdude123> Maybe I accidentally put gain on the input.
[21:12] <fsphil> if you set the Internal Monitor in pulseaudio then no
[21:12] <_ed> I think that's the problem it's only occasionally!
[21:13] <willdude123> I am getting F ZZZFFFl
[21:13] <mfa298> willdude123: in dl-fldigi you should see something like the screenshot I just linked to
[21:13] <craag> gtg, but the websdr and fizzle will keep running. It's on a psu for a looong run test (a few days).
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[21:14] <willdude123> $FIZZLEFD Getting closer.
[21:14] <mfa298> willdude123: this is what my settings look like https://dl.dropbox.com/u/14636926/hab/fizzle-settings.jpg
[21:15] <willdude123> Why 431 bandwidth?
[21:16] <willdude123> What frequency are you at?
[21:17] <mfa298> in the websdr i think i'm around the same frequency as you (there's a box below that shows who's listening to what)
[21:17] <willdude123> Nah not getting much might as well quit.
[21:17] <willdude123> I mean on DL-FLDIGI
[21:18] <mfa298> the bandwidth needs to be at around 300 or higher
[21:18] <willdude123> Yours was 431 so I set it to that.
[21:18] <mfa298> the first screenshot showed the decode screen
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[21:19] <mfa298> you want to see 2 yellow bars roughtly in the middle of the waterfall (if they're not you might need to retune slightly on the websdr
[21:19] <mfa298> willdude123: it might help if you did a screenshot of what you're seeing
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[21:40] <craag> willdude123: Just remembered, I used to have problems with buffer overruns in old versions of pulseaudio, corrupting data comms (particulary aprs). I'll have a look on my ubuntu 12.04 tomorrow.
[21:40] <willdude123> Okay.
[21:41] <willdude123> Ciemon: Did you manage to post it today?
[21:43] <mfa298> craag: what frequency is the rfm22 supposed to be on ?
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[22:00] <chrisstubbs> willdude123, got the network connection working for the robot arm software :)
[22:00] <chrisstubbs> it moves one motor, just got loads of code to copy and paste for the other motors tommorow
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[22:01] <chrisstubbs> anyway, work tommorow, night all
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[22:26] <willdude123> Who are the ops in this channel?
[22:27] <jonsowman> willdude123: do this: /msg chanserv flags #highaltitude
[22:29] <fsphil> not authorised :)
[22:29] <jonsowman> oh really
[22:29] <fsphil> must be op only
[22:29] <jonsowman> how about /msg chanserv access #highaltitude list
[22:30] <nigelvh> That worked
[22:31] <willdude123> What are the rules on swearing here?
[22:32] <nigelvh> I'm not an op and can't speak to everyone, but my general rule of thumb is "don't make it excessive"
[22:32] <jonsowman> yes indeed, there are no hard rules. but as long as it's not excessive it's usually overlooked
[22:33] <jonsowman> and not directed at anyone
[22:34] <willdude123> I don't fucking swear, ever. It's rude.
[22:35] <jonsowman> it is indeed.
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[22:35] <eroomde> he left for a byte
[22:36] <fsphil> I'm really bad at it, do I don't bother
[22:36] <fsphil> so*
[22:36] <willdude123> Looking over my first ever join to the channel is emotional.
[22:36] <willdude123> http://habhub.org/zeusbot/logs_highlighted/highaltitude.log.20121014.html
[22:38] <willdude123> I have evidemce I campe up with the idea of a pi tracker.
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[22:38] <jonsowman> you managed to join just after midnight so you'd be at the top of the log
[22:38] <jonsowman> nicely done
[22:38] <willdude123> Everyone said you couldn't do it.
[22:39] <jonsowman> *shouldn't
[22:39] <nigelvh> There a difference between what's possible, and what's recommended for a first time payload.
[22:40] <fsphil> it certainly is tempting
[22:40] <fsphil> it's a nice platform to develop on
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[22:44] <willdude123> I still really want to do a launch at some point.
[22:44] <willdude123> Maybe I'll just amass loads of hardware for a payload and say to my parents that I might as well fly it.
[22:45] <willdude123> Tracking is interesting, but not nearly as interesting as doing it.
[22:48] <fsphil> I do enjoy tracking. I'm still impressed that a puny little signal can travel so far
[22:53] <mfa298> willdude123: you might find you get hooked on tracking, especially when you get the chance to push you setup to the limit.
[22:53] <mfa298> I was really pleased when I was getting packets from PICO at 1am and I was outside of the blue circle :D
[22:54] <mfa298> especially when I knew my antenna was for the wrong band and cost a few quid to make
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[23:23] <SpeedEvil> :-)
[23:23] <arko> ride the next split
[23:23] <arko> net*
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[23:29] <Lunar_Lander> xD
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[23:36] <arko> anyone here have the diameter of a kaymont 1200g balloon that has 3568g of neck lift?
[23:36] <arko> or know of a tool that would tell me
[23:38] <Randomskk> diameter at ground?
[23:38] <arko> yes
[23:38] <Randomskk> the calculator knows it, if you hack the javascript slightly you can have it alert() it
[23:38] <arko> derp
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[23:41] <arko> brb hacking
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[23:48] <arko> ok
[23:48] <arko> so 2.07m
[23:48] <arko> hmm
[23:48] <arko> diameter
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[23:55] <arko> bd = 8.63;
[23:55] <arko> tba = 31000; //meters
[23:55] <arko> adm = 7238.3; // air density model
[23:55] <arko>
[23:55] <arko> burst_volume = (4.0/3.0) * Math.PI * Math.pow(bd / 2.0, 3);
[23:55] <arko> launch_volume = burst_volume * Math.exp((-tba) / adm);
[23:55] <arko> launch_radius = Math.pow((3*launch_volume)/(4*Math.PI), (1/3));
[23:55] <arko>
[23:55] <arko> launch_radius: 1.03511m
[23:55] <arko> launch_diameter: 2.07m
[23:55] <arko> now im going to measure my friends shoulder width in this photo
[23:55] <arko> err
[23:56] <arko> im going to measure my friends shoulder width in this photo and use it to scale the photo
[23:56] <arko> and get a rough ballpark
[23:56] <arko> i want to get as close as possible to prove that balloon was bad
[23:59] <SpeedEvil> don't forget parallax
[00:00] --- Tue Apr 2 2013