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[07:42] KT5TK (~thomas@adsl-68-92-215-75.dsl.hstntx.swbell.net) left irc: Ping timeout: 252 seconds [07:42] morning Upu [07:43] file received a-ok :) [07:43] Cheers! [07:44] morn [07:45] gm [07:47] noonoo (~costyn@lolcathost.quanza.net) joined #highaltitude. [07:47] Nick change: noonoo -> costyn [07:47] howdy [07:51] re the rpi webcam ... it apparently locks up after a random period of taking a shot every 5 seconds. I've seen it take 30 mins or 10 hours [07:51] gonzo_mob (~gonzo_mob@213.205.225.179) joined #highaltitude. [07:52] At that point the webcam LEDs are on (those come on when it's taking a photo) and the USB power consumption is up as it normally is when taking a photo [07:52] Have tried restarting the USB subsystem but doesn't fix it [07:52] I can reboot from another session and then it all works again, so it doesn't need a power cycle [07:53] morning costyn [07:54] been away for a bit, but glad to report my payload is almost ready for deployment. however it now turns out I have some power supply problems [07:54] number10 (51817a3d@gateway/web/freenode/ip.81.129.122.61) joined #highaltitude. [07:54] I have another webcam arriving soon and hopefully that will be OK [07:54] gonzo___mob (~gonzo_mob@213.205.233.24) joined #highaltitude. [07:54] gonzo__mob (~gonzo_mob@31.88.211.237) left irc: Ping timeout: 246 seconds [07:55] batteries are supplying 6v, but getting only about 3.2v on the regulated 5v pin on my board :( [07:55] What board? pi? [07:56] KT5TK (~thomas@adsl-68-92-37-132.dsl.hstntx.swbell.net) joined #highaltitude. [07:56] gonzo_mob (~gonzo_mob@213.205.225.179) left irc: Ping timeout: 246 seconds [07:56] so I was wondering how much current a standard arduino board + gps + ntx draws [07:56] Depends on the GPS [07:56] then I can make a separate powersupply circuit to power it through the serial bus [07:56] Somewhere around 60-100mA [07:56] ublox 6 on a GPS Bee [07:57] About 80mA then [07:57] ok that's quite small, good :) [07:57] The pi takes 0.5A or so [07:57] :p [07:57] anybody used that for HAB yet? [07:58] Not that I know of, though a few people on the web have mentioned it [07:58] craag here is doing one [07:59] It's not an ideal tracker but it'd be fun to fly one [07:59] interesting... and what extra cool stuff is he planning to do with it? [07:59] I'll be doing one too but not for a while [07:59] GPS + sensors I believe [07:59] I'm doing GPS + SSDV [08:00] for mine I'll be doing nbtv (narrow band tv) [08:00] ah cool, the extra processing power will come in handy then eh? [08:00] oo look at you [08:00] hehe [08:00] lol [08:00] Yes :-) [08:00] a tv standard from the 40s or something [08:00] KT5TK (~thomas@adsl-68-92-37-132.dsl.hstntx.swbell.net) left irc: Ping timeout: 264 seconds [08:01] For mine I have a tracker in C that does the GPS parsing and rtty transmission (telemetry and stills) [08:01] and a separate shell script that takes the photos and saves to the SD card [08:02] The C program then chooses the best* recent shot to send [08:02] ok, well, off to look for a voltage reg [08:02] *largest jpg file size ( c ) fsphil [08:02] reg for ? [08:02] have you tested it on real images daveake? [08:02] hehe... Tim had an algorithm on his beagleboard which also picked out the best pic too [08:03] fsphil ish [08:03] daveake: for my power supply for my board :) [08:03] from what to what at what ? [08:03] from 4-6 volts to 5v [08:03] step up/down then [08:03] something like the LM7805 although it's probably [08:03] too lumpy [08:03] and only does step-down [08:03] how do I get fldigi working on my 441 line tv for decoding [08:04] number10 What size hammers do you have? [08:04] 441 lines? fancy [08:04] this will be 28 line or something silly [08:04] thats reqquired for decoding fsphil next project no? [08:04] there will be software :) [08:05] probably not dl-fldigi [08:05] oh cool, as I think the HT is nackered in the tv [08:05] :) [08:05] I'd love to see someone receive it with a mechanical tv :) [08:06] though the format probably won't be the same as the old ones [08:06] just going to find my sledge hammer [08:06] I don't want the taller image [08:06] I'll stick with 4:3 [08:07] gonzo___mob (~gonzo_mob@213.205.233.24) left irc: Quit: Bye [08:07] launch planned midweek and I cant track :( [08:08] gonzo_mob (~gonzo_mob@213.205.233.152) joined #highaltitude. [08:11] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) left irc: Ping timeout: 264 seconds [08:11] gonzo_mob (~gonzo_mob@213.205.233.152) left irc: Client Quit [08:11] gonzo_mob (~gonzo_mob@213.205.233.152) joined #highaltitude. [08:12] Received email: Mike Bessant "Re: [UKHAS] Re: Pico Launch tonight (20:00 BST) from Kent heading North" [08:17] who should i email to get a payload doc uploaded? [08:20] gonzo__mob (~gonzo_mob@31.95.60.220) joined #highaltitude. [08:21] gonzo_mob (~gonzo_mob@213.205.233.152) left irc: Ping timeout: 252 seconds [08:21] you mailed tools last night navrac ? [08:25] yes i did - but it got 0 views! [08:28] sec [08:35] I think fsphil is adding it navrac [08:35] ah brilliant - thanks all [08:36] try now [08:38] Received email: Nigel Vander Houwen "Re: [UKHAS] Re: Pico Launch tonight (20:00 BST) from Kent heading North" [08:38] Received email: "Re: [UKHAS] Re: Pico Launch tonight (20:00 BST) from Kent heading North" [08:38] funcubes now playing up, typical [08:38] Received email: Oliver de Peyer Astrobiologist "Re: [UKHAS] Pico Launch tonight (20:00 BST) from Kent heading North" [08:39] looks like someone had already added it [08:46] KT5TK (~thomas@adsl-68-90-41-39.dsl.hstntx.swbell.net) joined #highaltitude. [08:51] X-Scale` (name@2001:470:1f14:135b::2) joined #highaltitude. [08:52] Received email: navrac "[UKHAS] OZZIE3 Launch announcement - Sunday 11am BST, 10am UTC." [08:55] Jessica_Lily (~Jessica@client-86-25-161-105.mcr-bng-013.adsl.virginmedia.com) joined #highaltitude. [08:55] Jessica_Lily (~Jessica@client-86-25-161-105.mcr-bng-013.adsl.virginmedia.com) left irc: Changing host [08:55] Jessica_Lily (~Jessica@unaffiliated/xray7224) joined #highaltitude. [08:59] KT5TK (~thomas@adsl-68-90-41-39.dsl.hstntx.swbell.net) left irc: Ping timeout: 252 seconds [09:01] Nick change: X-Scale` -> X-Scale [09:12] daveake (~daveake@daveake.plus.com) left irc: Ping timeout: 252 seconds [09:12] KT5TK (~thomas@adsl-68-92-63-127.dsl.hstntx.swbell.net) joined #highaltitude. [09:13] daveake (~daveake@daveake.plus.com) joined #highaltitude. [09:19] gonzo__mob (~gonzo_mob@31.95.60.220) left irc: Ping timeout: 252 seconds [09:20] gonzo_mob (~gonzo_mob@31.95.60.220) joined #highaltitude. [09:20] navrac (~navrac@navsys.plus.com) left irc: Ping timeout: 250 seconds [09:28] Hiena (~boreger@81.93.195.181.datatrans.hu) joined #highaltitude. [09:29] Wil5on (~Wil5on@compsci.adl/eternalpresident/wil5on) joined #highaltitude. [09:34] So has anyone bought an RTL-SDR? If so: where from (UK)? I see stuff like dealextreme (airmail) or sellers on amazon. [09:35] DX are selling the 646 onees [09:36] whch is a bit annoying [09:36] try ebay [09:36] I got this one https://www.cosycave.co.uk/product.php?id_product=104 [09:36] Upu has one or two of those too [09:37] I have bought here: http://shop.sysmocom.de/products/eztv668-bulk - works nicely [09:38] ok its Germany [09:40] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) joined #highaltitude. [09:40] BrainDamage (~BrainDama@dynamic-adsl-94-36-252-249.clienti.tiscali.it) joined #highaltitude. [09:41] ok, thanks :-) [09:42] navrac (navrac@84.92.14.5) joined #highaltitude. [09:54] daveake (daveake@daveake.plus.com) left #highaltitude. [10:15] zamabe (~zamabe@unaffiliated/zamabe) left irc: Quit: Do you remember where I left that lego? [10:16] zamabe (~zamabe@unaffiliated/zamabe) joined #highaltitude. [10:21] deal extreme have switched to the newer ones [10:21] but they do work [10:21] sort of [10:21] until they blow up [10:21] *not sure if it was me or the device [10:21] navrac any prediction for tomorrow ? [10:28] Jessica_Lily (~Jessica@unaffiliated/xray7224) left irc: Ping timeout: 264 seconds [10:29] KT5TK (~thomas@adsl-68-92-63-127.dsl.hstntx.swbell.net) left irc: Ping timeout: 248 seconds [10:32] prediction - hmm. Depends. If I go with 2xAA it floats about 100km of holland and ends up in denmark [10:33] if I can find some AAA lithiums it floats about 3k higher, does a loop in the north sea and heads to denmark [10:34] oops other way round [10:34] that might be out of range for me [10:34] but the chances ofgetting aa lithiums round here is pretty remote. [10:35] tesco ? [10:42] nearest tesco that stocks them is about 25 miles away [10:42] maybe 15 miles [10:43] just been phoningthe local shops - no luck yet [10:43] we have 3 tescos within 3 miles here [10:43] KT5TK (~thomas@adsl-68-92-61-21.dsl.hstntx.swbell.net) joined #highaltitude. [10:43] not much round here apart from small village shops [10:44] odd, tesco here has them too [10:45] sometimes even fairly priced [10:45] there is a small tesco about 10 miles away - but it doesnt do lithiums [10:45] tescos at saxmundham [10:46] thats the one - only does alkaline [10:46] mm thats unfortunate [10:47] tesco had a good price on the AAs instore - 4.50 4pk [10:47] I dont know sax well, dont think there is anywhere else likely to do them [10:48] motorway service stations ? [10:50] motorways? suffolk! [10:50] lol [10:51] zamabe (~zamabe@unaffiliated/zamabe) left irc: Remote host closed the connection [10:55] tesco online dont do lithiums - I thought I could get them to deliver [10:56] gonzo_mob (~gonzo_mob@31.95.60.220) left irc: Ping timeout: 246 seconds [10:57] KT5TK (~thomas@adsl-68-92-61-21.dsl.hstntx.swbell.net) left irc: Ping timeout: 248 seconds [10:59] jakr (~nofreewil@unaffiliated/jakr) joined #highaltitude. [11:00] gonzo_mob (~gonzo_mob@213.205.232.90) joined #highaltitude. [11:02] right - off for a lithium hunt - cant go far- got to be back for the gp qualifying [11:02] noooo not more sports [11:02] I officially declare that for all of 2013 everyone should just sit around and be lazy [11:04] fsphil - I just got ft817 - should the power bars flash to indicate 5W when plugged into 13.8v? [11:04] that is what formula 1 is - sitting in a car [11:04] when on battery yes [11:05] it's not clearly described in the manual -- I think the power indicator flashes when on 5W and the voltage is below a certain level [11:05] fsphil: Works for me. How do you feel about starting 6 months early? [11:06] strange - I can cycle though the settings - but when on 3 bars and external PSU connected it doesnt flash - I probbably have something wrong [11:07] hmm.. might impact the olympics SpeedEvil [11:07] I still have the internal NMHI connected [11:07] three bars is 2.5w [11:07] isn't it? *checks* [11:08] I think so [11:08] and it says flashing for 5w [11:08] three bars solid is 2.5W [11:08] three bars flashing is 5W with low voltage [11:08] and no bars is 5W when not running on battery [11:09] ah so no bars 5w.. thats silly [11:09] lol yep [11:09] with some psus, it has no bars until I start to transmit, the voltage drops and it starts blinking [11:09] cheers fsphil ... doesnt take much to confuse m these days [11:10] it's not terribly clear [11:10] KT5TK (~thomas@adsl-68-92-38-251.dsl.hstntx.swbell.net) joined #highaltitude. [11:10] I don't know what it considers a good voltage to be [11:10] On a somewhat random topic. Does anyone happen to know where to buy good lithium 18650s? [11:10] As in actual proper branded ones. [11:10] dealextreme [11:11] oh :) [11:11] Ideally cheap - but meh. [11:11] Get the trustfire ones from Dealextreme [11:11] I really want ones that are likely to work for a reasonable number of cycles. [11:11] they are easy to spot as amusingly they have flames on the side [11:11] And stay fairly well matched. [11:12] Rather than 'works OK in my fleshlight'. [11:12] err flashlight [11:12] fleshlight lol [11:12] can't comment on that but they do work ok in my flash light [11:13] lol [11:16] nick_ (~nick_@cpc5-oxfd23-2-0-cust350.4-3.cable.virginmedia.com) joined #highaltitude. [11:20] KT5TK (~thomas@adsl-68-92-38-251.dsl.hstntx.swbell.net) left irc: Ping timeout: 252 seconds [11:20] WillDuckworth (~will@host86-149-153-63.range86-149.btcentralplus.com) joined #highaltitude. [11:27] WillDuckworth (~will@host86-149-153-63.range86-149.btcentralplus.com) left irc: Quit: Ex-Chat [11:31] Action: jakr is away: I'm running [11:34] KT5TK (~thomas@adsl-68-92-213-221.dsl.hstntx.swbell.net) joined #highaltitude. [11:34] fully clothed I hope [11:35] Action: jakr is back (gone 00:04:04) [11:36] jakr (~nofreewil@unaffiliated/jakr) left irc: Quit: Leaving [11:41] MoALTz (~no@92.2.131.0) left irc: Ping timeout: 246 seconds [11:50] MoALTz (~no@host-92-8-230-153.as43234.net) joined #highaltitude. [11:52] M0NSA (~HeliosFA@2a01:348:117::666) joined #highaltitude. [11:53] r2x0t (~r00t@b607.praha.cas.cz) joined #highaltitude. [12:01] BoggleJon (~jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) joined #highaltitude. [12:05] Laurenceb_ (~Laurence@host109-157-38-53.range109-157.btcentralplus.com) joined #highaltitude. [12:17] LazyLeopard (~irc-clien@chocky.demon.co.uk) joined #highaltitude. [12:19] Hiena (~boreger@81.93.195.181.datatrans.hu) left irc: Remote host closed the connection [12:39] KT5TK (~thomas@adsl-68-92-213-221.dsl.hstntx.swbell.net) left irc: Ping timeout: 264 seconds [12:46] http://geoengineeringpolitics.blogspot.co.uk/2012/05/spice-field-test-cancelled.html [12:46] oh noes [12:46] now they cant rig a pressure washer to a balloon [12:47] lol [12:47] SPICE was insane [12:47] Action: Laurenceb_ orders some hose and a pressure washer [12:47] hugh hunt was my lecturer for a bit [12:47] they chatted to spaceflight about it [12:47] yeah [12:47] this is the test was stupid [12:47] and trivial [12:48] having a long term tethered balloon at 30km with a supply hose is many orders of magnitude more comlex [12:48] yea [12:48] i could do the SPICE test with parts from B&Q [12:52] KT5TK (~thomas@adsl-68-90-43-212.dsl.hstntx.swbell.net) joined #highaltitude. [12:54] jakr (~nofreewil@unaffiliated/jakr) joined #highaltitude. [12:55] ~ [12:55] . [12:55] ? [12:55] [M[M[Mignroe that [12:55] stupid home internet [12:55] porblem ? [12:55] fibre can't come soon enough [12:55] (next tuesday...) [12:55] <3 fibre [12:55] 20/80 ? [12:56] 40/10 is fastest I can get atm [12:56] hoping they'll increase it later [12:56] well 10/40 [12:56] see what you get , I got 8/36 [12:56] now its 16/43 [12:56] nice [12:56] atm I have 0.6/5.5 [12:56] compared to the .25/.5 I got before its win [12:56] yep :) [12:56] heh indeed [12:56] upload is god [12:57] KT5TK (~thomas@adsl-68-90-43-212.dsl.hstntx.swbell.net) left irc: Ping timeout: 250 seconds [12:57] yea [12:57] £5/mo extra to get 10 instead of 2 [12:57] well worth it [13:04] BoggleJon (~jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) left irc: Ping timeout: 264 seconds [13:16] mclane (4fcf5090@gateway/web/freenode/ip.79.207.80.144) left irc: Quit: Page closed [13:22] costyn_ (~costyn@lolcathost.quanza.net) joined #highaltitude. 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[13:45] griffonbot (~griffonbo@kraken.habhub.org) joined #highaltitude. [13:45] Action: griffonbot is GriffonBot [http://github.com/ssb/griffonbot] [13:45] Action: griffonbot is following: #ukhas #cusf #atlasballoon #projecthorus #HABE2 [13:45] Action: griffonbot is tracking emails sent to ukhas@googlegroups.com [13:48] Which program is griffonbot ? [13:49] Oh, I'm stupid... [13:50] Although github gives me a 404 [13:52] BoggleJon (~jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) joined #highaltitude. [13:57] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) joined #highaltitude. [14:03] jdtanner (~Adium@host86-153-106-21.range86-153.btcentralplus.com) joined #highaltitude. [14:05] KT5TK (~thomas@adsl-68-92-213-118.dsl.hstntx.swbell.net) joined #highaltitude. [14:26] jdtanner (~Adium@host86-153-106-21.range86-153.btcentralplus.com) left irc: Quit: Leaving. [14:33] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [14:35] psophis (~golddrago@108.160.229.221) joined #highaltitude. [14:35] BoggleJon (~jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) left irc: Ping timeout: 245 seconds [14:46] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 245 seconds [14:48] jakr (~nofreewil@unaffiliated/jakr) joined #highaltitude. [14:49] mclane (4fcf5090@gateway/web/freenode/ip.79.207.80.144) joined #highaltitude. [14:50] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [14:50] Received email: "Re: [UKHAS] Pico Launch tonight (20:00 BST) from Kent heading North" [14:52] Last message repeated 1 time(s). [14:52] psophis (~golddrago@108.160.229.221) left irc: Quit: psophis [14:54] daveake (~daveake@daveake.plus.com) joined #highaltitude. [14:56] http://www.davpack.co.uk/polythene-packaging/poly-bags-grip-seal-bags/48g-gusseted-poly-bags.htm [14:57] nice [14:57] balloon material? [14:57] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 255 seconds [14:59] i think it should be about 98grams mass [15:01] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [15:02] jdtanner (~Adium@host86-153-106-21.range86-153.btcentralplus.com) joined #highaltitude. [15:06] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 264 seconds [15:06] Interesting. [15:08] So the bottom one on tht list'd hold about 1.8m^3, and weigh 400g or so [15:09] So maybe closing on 2kg of free lift. [15:09] Or for a whole pack - 500kg [15:10] How much is 1000m^3 of hydrogen? [15:10] Well 7.2 is £44+VAT [15:10] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [15:14] Interesting. [15:15] Natural gas is about 66p for the same lift as 1m^3 as H2 [15:15] of H2 [15:15] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 255 seconds [15:15] So 300 quid or so would get you with the above packages - and some string - 250kg of lift. [15:19] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [15:21] hehe [15:22] Hello, question to the professionals: what is the recommended coding for the rtty strings: 7n1? 7n2? [15:22] i get 100gram mass or so [15:22] its 12gram/m^2 [15:24] mclane: 7n2 is fine [15:25] thanks fsphil [15:25] 7n1 should be better, but fldigi's modem works better with 2 stop bits [15:26] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 240 seconds [15:26] Laurenceb: For the 1.4*1.6*0.8m one - the area is 1.4*1.6*2 + 0.8*(1.6+1.4)*2 [15:26] Or 9.2m^2 [15:26] *.048 = ~400g [15:27] Oh [15:27] Fail. [15:28] I was thinking 48g was 48g/m^2 [15:28] A micron*1m^2 weighs a gram of course (water) - so it's of the order of 12g/m^2, prolly 10g/m^2 [15:29] so more like 90g indeed [15:31] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [15:32] so cruise at 12Km with 100gram payload [15:34] And 30p worth of natural gas. [15:34] Total launch cost of well under a pound. [15:35] ha fsphil now you tell us ; I use 7n1 [15:35] it mostly only matters at 300 baud [15:35] What sort of payloads could you do with balloons costing a pound... [15:35] :) I dont feel so bad now [15:35] but it probably has some slight effect at 50 baud too [15:35] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 248 seconds [15:36] now I feel bad again [15:36] Oooh... [15:36] but I doubt you'd notice it :) [15:36] (that's good) [15:36] :) [15:36] If you had multiple closely seperated in frequency beacons, on balloons - and enough recievers, you could do the SDR thing, and generate relative positions for them all. [15:37] You need enough recievers that you can overdetermine the position, and solve for frequency offset of each reciever. [15:37] I think. [15:39] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [15:40] |ezra| (~|ezra|@adsl-065-083-172-115.sip.mco.bellsouth.net) joined #highaltitude. [15:46] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 248 seconds [15:50] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. 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[16:13] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 246 seconds [16:14] guys... any ideas what could cause the volume of the ntx to change inexplicably? the s/n doesn't seem to change, but the signal at times is louder and at times quieter (changes every 5 minutes or so) [16:14] Wil5on (~Wil5on@compsci.adl/eternalpresident/wil5on) left irc: Ping timeout: 248 seconds [16:15] there is also a lot more yellow and some red when it's loud, and only yellow on the signal freq when it's quiet [16:15] (on the waterfall) [16:15] costyn_, if it was caused on the balloon end, the s/n on your end would have to change [16:15] i think [16:17] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [16:17] that was what I thought :) [16:17] I'll watch the s/n more closey [16:17] *closely [16:18] ayways, time for dinner first [16:18] be back in a bit [16:25] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 246 seconds [16:27] Dan-K2VOL (~Dan-K2VOL@pool-71-172-159-166.nwrknj.fios.verizon.net) joined #highaltitude. [16:27] navrac (navrac@84.92.14.5) left irc: Ping timeout: 246 seconds [16:30] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [16:35] jakr (~nofreewil@unaffiliated/jakr) left irc: Quit: Leaving [16:37] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 264 seconds [16:41] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [16:42] BrainDamage (~BrainDama@dynamic-adsl-94-36-252-249.clienti.tiscali.it) left irc: Quit: Leaving. [16:43] BrainDamage (~BrainDama@dynamic-adsl-94-36-252-249.clienti.tiscali.it) joined #highaltitude. [16:46] navrac (navrac@84.92.14.5) joined #highaltitude. [16:47] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 240 seconds [16:51] jakr (~nofreewil@unaffiliated/jakr) joined #highaltitude. [16:52] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [16:56] |ezra| (~|ezra|@adsl-065-083-172-115.sip.mco.bellsouth.net) left irc: Remote host closed the connection [16:57] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 250 seconds [16:59] jakr (~nofreewil@unaffiliated/jakr) left irc: Quit: Leaving [17:01] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [17:02] nick_ (~nick_@cpc5-oxfd23-2-0-cust350.4-3.cable.virginmedia.com) left irc: Ping timeout: 244 seconds [17:06] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 264 seconds [17:09] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) joined #highaltitude. [17:14] nosebleedkt (~nosebleed@ppp046177125203.access.hol.gr) left irc: Ping timeout: 265 seconds [17:32] jakr (~nofreewil@unaffiliated/jakr) joined #highaltitude. [17:34] weird... been running for an hour now without any more quiet periods [17:39] jakr (~nofreewil@unaffiliated/jakr) left irc: Quit: Leaving [17:39] Lunar_Lander (~gd-compto@p54A071B2.dip.t-dialin.net) joined #highaltitude. [17:39] hello [17:40] HELOOOOOOOOOOOOOOOOOOO! [17:40] xD [17:40] how are you? [17:40] Meh. [17:41] I'm having one of those 'wait - how can it be 7PM' days. [17:41] yea [17:41] I seem to have been abducted by aliens for 5 hours today. [17:41] ohh [17:41] It's the only way I can work out the missing time. [17:42] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) left irc: Ping timeout: 264 seconds [17:42] navrac (navrac@84.92.14.5) left irc: Ping timeout: 250 seconds [17:44] daveake: Just read the specs again... says it needs 7-12 volts, so the 6 I'm giving it just aren't enough for the onboard voltage reg [17:45] SpeedEvil: I know that feel, bro :) [17:45] Alcohol wasn't involved, either. [17:48] yea [17:49] costyn Yeah, many linear regulators need at least 2V difference between Vin and Vout [17:49] Depends - LDOs may be lots less [17:49] costyn_, which one do you use? [17:49] I mean I run the sparkfun one at 4.5V and it gives out 3.3V OK [17:49] Yes [17:50] Some LDOs though drop 1.5V. Not Low in my book! [17:50] The ones I use are around 0.3V for full current [17:50] Lunar_Lander: the seeedstudio stalker v328 has a LM1117 on it [17:50] ah [17:50] that is the one afaik [17:50] or what voltage does it have? [17:51] daveake: so it seems... what is the voltage levels of energizers? anybody have a link to a chart for a constant current load? [17:51] ah sparkfun has LD1117V33 [17:51] Energizers start at 1.8V but very quickly drop to 1.6V [17:51] Lunar_Lander: well my batteries were feeding it 6v (measured while it was running) and the 5v pin was giving 3.5v or so. the ntx didn't sound very healthy [17:52] yes [17:52] When they're cold the voltage is lower than normal [17:52] ah [17:52] My rule of thumb is to treat them as dead at 1V. in other words, I want my payload to still be running down to that point. [17:52] well I have 5 slots for AA batteries, so I should be ok until they drop to 1.4 [17:53] For a 3.3V board, an LDO of 0.5V or less (the Arduino Mini Pro drops about 0.25V IIRC) is needed [17:53] daveake: it would seem I would need more than 5 batteries, which seems excessive. [17:53] Then you can use 4 AAs [17:53] well i have it set up for 5, which is ok I guess [17:54] Dan-K2VOL (~Dan-K2VOL@pool-71-172-159-166.nwrknj.fios.verizon.net) left irc: Quit: Leaving. [17:54] Just [17:54] For 5V I use a 0.5V dropout reg, and 6 AAs [17:54] 5*1.4 = 7 volts... anything below is getting into murky territory [17:55] daveake: ok... have a link to the 0.5v reg? [17:55] Use a better regulator anyway [17:55] Just a mo [17:55] use a reg different than the onboard one you mean right? [17:56] For the pi I'm using an LM2940CT-5. 1A max, 0.28V drop @ 0.5A [17:56] Replace the onboard one [17:56] do you solder a diffrent one onto the board? or just connect it to the vcc of th board? [17:56] Either [17:57] In this case it's off board as I want to put a heatsink on it [17:57] Remember the pi runs at 400mA [17:57] that's a lot yes :) [17:57] And convection at 1% atmosphere is not good! [17:57] you want to set it to 4.5V or so [17:58] As it will run at that, and use ~10% less [17:58] err [17:58] yeah [17:58] Conduction is actually unaffected [17:58] daveake: but you would use the LM2940CT-5 for any 5v device that you'd design? even an arduino type board? [17:58] Until you hit about a pascal, conduction to air isn't affected [17:58] SpeedEvil: what about convection? [17:59] Sure, but it's a TO220 package so it might not fit on your board [17:59] It's annoying if you're tryng to do vacuum insulation [17:59] costyn_: majorly [17:59] but TO220 looks cool [17:59] xD [17:59] (sorry for the stupid remark) [17:59] daveake: I'll just dead bug it [17:59] SpeedEvil the 5V is for the USB - webcam. I have a separate regulator for the 3.3V line. [18:00] daveake: ah - you'd removing the 3.3V linear? [18:00] The pi 3.3V reg has 1.2V dropout; the one I'm using has about 1/4 of that [18:00] Check [18:00] (actually - simply setting your reg to 3.4 should work) [18:00] electronics is a great hobby... parts are so cheap :) [18:02] daveake: would you recommend I use a heatsink too? cause I only use less than 100 mA? [18:02] Also the mcp1825s50 is very good [18:03] < 100mA and 5 AAs? No, you'll be fine [18:03] daveake: cool thx [18:04] But to check look at the data sheet. It will tell you how many degrees of temperature elevation per watt without a heatsink [18:04] ok [18:06] daveake: thanks for your help. saves me a lot of time and headache worrying if it'll be allright. now I know it'll be ok :) [18:07] Right, it's 60 degrees per watt [18:07] So 5 x AA @ 1.8V (not for long) = 9V, so that's 4V across the device, times 0.1A = 0.4W [18:07] So temp rise is 0.4 * 60 which is 24 degrees [18:08] Which is not very much [18:08] no should be ok :) cool supertanks! [18:08] For the pi I've added heatsinks :) [18:11] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) joined #highaltitude. [18:11] cool, anyways, going to give the wife some attention [18:23] zamabe (~zamabe@unaffiliated/zamabe) joined #highaltitude. [18:48] mclane (4fcf5090@gateway/web/freenode/ip.79.207.80.144) joined #highaltitude. [18:48] jakr (~nofreewil@unaffiliated/jakr) joined #highaltitude. [18:48] jakr (~nofreewil@unaffiliated/jakr) left irc: Read error: Connection reset by peer [18:53] hi mclane [18:53] Hi LunarLander [19:00] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) left irc: Ping timeout: 264 seconds [19:06] how are you? [19:10] still waiting for helium [19:26] TylerD (~TylerD@unaffiliated/tylerd) left irc: Ping timeout: 265 seconds [19:28] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) joined #highaltitude. [19:43] navrac (navrac@84.92.14.5) joined #highaltitude. [19:46] yea [19:47] mclane, do you know Lars Golenia? [19:47] nick_ (~nick_@cpc5-oxfd23-2-0-cust350.4-3.cable.virginmedia.com) joined #highaltitude. [19:47] jcoxon (~jcoxon@232.139.125.91.dyn.plus.net) joined #highaltitude. [19:53] LunarLander: no [19:54] jcoxon (~jcoxon@232.139.125.91.dyn.plus.net) left irc: Quit: Leaving [19:59] Hi, i am looking for an android application to see the spacenear tracker info on a smartphone - is there something like that? [20:02] Not at present. Believe there might be one in development. [20:03] a mobile-friendly web client would be cool [20:03] as most of us whoe tried know by now, the tracker can make short work of most mobile browsers [20:03] it would [20:04] even my new shiny spiffy ipad 3 crashes completely as soon as it tried to load the path [20:05] Julie's Tab is OK but after a bit of zooming or scrolling you might as well just reload [20:17] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) left irc: Ping timeout: 264 seconds [20:23] is harrison ford dead or something? [20:23] Action: Upu checks sickipedia [20:24] this evening on tv within the first 20 or so channels, indiana jones, witness, the fugitive [20:24] doesn't appear so [20:24] hello Upu [20:24] evening Lunar [20:25] There are too many channels. [20:28] FIN [20:31] Hiena (~boreger@81.93.195.181.datatrans.hu) left irc: Remote host closed the connection [20:38] mclane (4fcf5090@gateway/web/freenode/ip.79.207.80.144) left irc: Quit: Page closed [20:46] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) joined #highaltitude. [21:10] OZ1SKY_Brian (~Brian@x1-6-20-4e-7f-c8-44-7a.k599.webspeed.dk) joined #highaltitude. [21:19] BoggleJon (~jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) joined #highaltitude. [21:20] MoALTz (~no@host-92-8-230-153.as43234.net) left irc: Quit: bbl [21:23] jschall (~quassel@c-24-10-32-157.hsd1.ca.comcast.net) joined #highaltitude. [21:25] BoggleJon (~jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) left irc: Ping timeout: 264 seconds [21:34] jdtanner (Adium@host86-153-106-21.range86-153.btcentralplus.com) left #highaltitude. [21:36] Suggestions as to cheapest places to buy lithium AA's from? [21:36] in 4s [21:36] Online [21:37] X-Scale (name@2001:470:1f14:135b::2) left irc: Remote host closed the connection [21:38] try 7dayshop [21:42] I assume the duracell AA lithium are substantially identical to the energiser ones? [21:43] don't think so [21:44] number10 (51817a3d@gateway/web/freenode/ip.81.129.122.61) left irc: Quit: Page closed [21:44] there is a difference between ultimate lithiums and normal lithims [21:44] really? [21:44] I mean the 1.5V sort [21:45] http://www.energizer.com/batteries/advanced-lithium/Pages/aa.aspx [21:45] http://www.7dayshop.com/catalog/product_info.php?products_id=113124 [21:45] those are normal ones [21:45] http://www.energizer.com/batteries/ultimate-lithium/Pages/default.aspx [21:46] those are the ultimate ones [21:46] Lithium iron disulfide - should be the same [21:46] trying to find the data sheet there is a difference [21:46] ok [21:46] I wouldn't take the risk without seeing the data sheet [21:47] http://data.energizer.com/PDFs/ea91.PDF Normal [21:47] http://data.energizer.com/PDFs/L91.PDF Ultimate [21:49] comparisons by Tescos [21:50] Action: SpeedEvil sighs. [21:50] Ok - I don't care about self-discharge - because it's going to be used in ~3 years anwya [21:51] I can't make a comparison because the data sheets aren't doing like for like [21:51] My advice would be buy both and test [21:51] Ok - advanced says 550 hours at 10mW - or 5.5Wh. [21:52] And ultimate 450 hours, or 4.5Wh [21:54] you will be using more than 10mW though [21:54] Dan-K2VOL (~Dan-K2VOL@pool-71-172-159-166.nwrknj.fios.verizon.net) joined #highaltitude. [21:54] Sorry I diddn't make it clear [21:54] jcoxon (~jcoxon@232.139.125.91.dyn.plus.net) joined #highaltitude. [21:55] this is in fact for a high altitude 433MHz transmitter, but the high altitude will be my chimney. [21:55] And it's a weather station [21:56] ah ok [21:57] xD [21:57] And the duracell ones are 4Wh@10mW [22:04] nick_ (~nick_@cpc5-oxfd23-2-0-cust350.4-3.cable.virginmedia.com) left irc: Quit: sleep [22:06] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) left irc: Ping timeout: 264 seconds [22:08] weissbier (mtnGaDl1Lj@2001:470:1f14:198a::2) left irc: Quit: Uˆj‰ [22:09] weissbier (BIwulUSDYB@2001:470:1f14:198a::2) joined #highaltitude. [22:10] Nick change: zamabe -> pywo1f [22:10] Nick change: pywo1f -> zamabe [22:11] navrac (navrac@84.92.14.5) left irc: Ping timeout: 252 seconds [22:12] weissbier (BIwulUSDYB@2001:470:1f14:198a::2) left irc: Client Quit [22:12] weissbier (CtejkHdrLt@2001:470:1f14:198a::2) joined #highaltitude. [22:13] Odd. [22:14] There seem almost no auctions on ebay for advanced, and quite a lot for ultimate [22:18] jcoxon (~jcoxon@232.139.125.91.dyn.plus.net) left irc: Quit: Leaving [22:19] http://www.amazon.co.uk/Advanced-Lithium-Batteries-AA-Pack/dp/B0032JZ64G/ref=sr_1_6?ie=UTF8&qid=1341699511&sr=8-6 - heh [22:23] weissbier (CtejkHdrLt@2001:470:1f14:198a::2) left irc: Quit: Uˆj‰ [22:23] weissbier (cCCK35jRaA@200104707a5e00000000000000000000.rev.fakenet.eu.org) joined #highaltitude. [22:24] daveake (~daveake@daveake.plus.com) left irc: Ping timeout: 245 seconds [22:29] weissbier (cCCK35jRaA@200104707a5e00000000000000000000.rev.fakenet.eu.org) left irc: Quit: Uˆj‰ [22:29] weissbier (tlv2ocY4bP@200104707a5e00000000000000000000.rev.fakenet.eu.org) joined #highaltitude. [22:35] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) joined #highaltitude. [22:37] mazzanet (~mazzanet@hpavc/mazzanet) left irc: Ping timeout: 246 seconds [22:44] psophis (~golddrago@108.160.229.221) joined #highaltitude. [23:11] LazyLeopard (~irc-clien@chocky.demon.co.uk) left irc: Quit: Bye [23:15] nss (323252ab@gateway/web/freenode/ip.50.50.82.171) joined #highaltitude. [23:19] nss (323252ab@gateway/web/freenode/ip.50.50.82.171) left irc: Ping timeout: 245 seconds [23:21] Dan-K2VOL1 (~Dan-K2VOL@pool-71-172-159-166.nwrknj.fios.verizon.net) joined #highaltitude. [23:23] hmm advanced lithium [23:23] thats new [23:23] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) left irc: Ping timeout: 264 seconds [23:23] They also seem rare as hens teeth in the UK [23:24] Dan-K2VOL (~Dan-K2VOL@pool-71-172-159-166.nwrknj.fios.verizon.net) left irc: Ping timeout: 244 seconds [23:26] i see no difference in datasheet [23:26] both just over 3Ah /AA cell [23:26] hmm [23:26] I was reading the 10mW power line [23:26] One is considerably higher than the other [23:27] I guess in my app I probably don't care about power, but current, but I diddn't see a nice current vs mAh graph [23:27] oh the voltage [23:27] i see [23:27] Is one voltage higher? [23:27] Action: Laurenceb_ looks again [23:28] I should probably measure Ipk for my RF sender thingy [23:29] oh yeah advanced is slightly better [23:29] the toy example [23:31] maintains voltage slightly better [23:37] no wait they changed the scale [23:37] i think its the same graph [23:38] If you read the mWh out from the graph, you clearly get a different result [23:38] Unless it's mislabeled. [23:38] Or I misread [23:39] which graph? [23:40] oh yeah [23:40] 4.5/5.5 [23:41] but advanced has higher ESR [23:41] and "only" 10 years shelf life [23:41] looks like the toy example ends up very similar [23:42] KT5TK (~thomas@adsl-68-92-213-118.dsl.hstntx.swbell.net) left irc: Ping timeout: 264 seconds [23:42] Indeed. [23:42] Looks like advanced may be slightly better for a weatherstation [23:42] wait.. thats too similar [23:42] but ... [23:42] i think someone at energizer is copying and pasting the data [23:43] zoom in and look at the kinks [23:43] hmm [23:43] definately a different battery tho [23:43] *definitely [23:43] Has anyone seen a 'why you should buy this battery over this battery' doc from energiser for these? [23:44] not me, but i havent looked [23:44] Action: Laurenceb_ zzz [23:44] Idly wondering. [23:44] I'm kinda tempted to say screwit, and just run a wire. [23:49] Laurenceb_ (~Laurence@host86-143-55-210.range86-143.btcentralplus.com) left irc: Ping timeout: 264 seconds [23:52] G8KNN-Jon (~Jon@cpc1-cmbg10-0-0-cust144.5-4.cable.virginmedia.com) joined #highaltitude. [23:52] psophis (~golddrago@108.160.229.221) left irc: Quit: psophis [23:56] KT5TK (~thomas@adsl-68-92-62-205.dsl.hstntx.swbell.net) joined #highaltitude. [00:00] --- Sun Jul 8 2012