#raspberrypi IRC Log


IRC Log for 2013-08-11

Timestamps are in GMT/BST.

[0:00] <rdz> low key means small footprint?
[0:01] <sney> means low overhead, in this case
[0:02] <sney> cifs is basically the same as it was in the windows 95 days
[0:02] <rdz> http://www.raspberrypi.org/phpBB3/viewtopic.php?t=14500&p=400269 <- i just happen to read there that people are achieveing 5MB/s in one direction.. that is already pretty good
[0:02] <rdz> i currently get 1MB/s wth sshfs
[0:02] * NullMoogleCable (~NullMoogl@cpe-74-74-136-123.rochester.res.rr.com) Quit (Ping timeout: 245 seconds)
[0:02] <sney> peak, or sustained?
[0:03] <rdz> me with sshfs? sustained...
[0:03] <rdz> don't know about the report about nfs
[0:04] <sney> I mean, if you're not interested in the ssh encryption in your lan then you may as well go with nfs or cifs, since at the very least ssh is adding some cpu use
[0:04] <sney> but don't expect amazing speeds out of anything you do with a raspberry pi, either.
[0:04] * NullMoogleCable (~NullMoogl@cpe-74-74-136-123.rochester.res.rr.com) has joined #raspberrypi
[0:04] <rdz> of course not
[0:05] <sney> yeah, you'd think it would be obvious
[0:06] * ukgamer (~ukgamer@host81-132-148-109.range81-132.btcentralplus.com) has joined #raspberrypi
[0:06] <rdz> but just live with something and not trying to tweak things a bit is also not really possible... (for me)
[0:07] <sney> nod
[0:07] * rikai_ (~rikai@unaffiliated/rikai) has joined #raspberrypi
[0:11] * rikai__ (~rikai@unaffiliated/rikai) Quit (Ping timeout: 264 seconds)
[0:12] * suehle (~rsuehle@fedora/suehle) Quit (Read error: Operation timed out)
[0:15] * EastLight (g@ Quit (Ping timeout: 240 seconds)
[0:16] * Biganon (~Biganon@ks23183.kimsufi.com) has joined #raspberrypi
[0:18] <Biganon> Hi again ; I'm trying to make a servo move using the wiringpi library and its python wrapper. But whenever I launch a pwmWrite(), I can only hear a small noise in the servo and it just like... twitches
[0:19] * teff (~teff@client-82-25-235-168.glfd.adsl.virginmedia.com) Quit (Ping timeout: 248 seconds)
[0:20] <Biganon> and it also becomes hot and makes ultrasonic sounds
[0:22] * Omnibrain (~Omnibrain@unaffiliated/omnibrain) Quit (Quit: cu)
[0:23] <pksato> Biganon: servo not use pwm.
[0:24] * babylonlurker (~quassel@veda.xs4all.nl) Quit (Quit: http://quassel-irc.org - Chat comfortably. Anywhere.)
[0:24] <pksato> but, pwm can be used, need to adjust some parameters to servo pulse specification.
[0:26] * GuySoft (guy@ has joined #raspberrypi
[0:28] <Biganon> how would you use to achieve the correct period etc. ?
[0:28] <Biganon> I've been trying to use servoblaster but I can't get it to work on archlinux ARM
[0:28] <pksato> use servoblaster https://github.com/richardghirst/PiBits/tree/master/ServoBlaster
[0:29] <Biganon> :D
[0:30] * Turingi (~devon@unaffiliated/devon-hillard/x-7250961) Quit (Read error: Connection reset by peer)
[0:30] <pksato> or, use you own code.
[0:32] * dj_pi (~dj@c-107-5-25-243.hsd1.mi.comcast.net) Quit (Ping timeout: 256 seconds)
[0:32] * Shirakawasuna (~Shirakawa@184-77-202-94.war.clearwire-wmx.net) has joined #raspberrypi
[0:33] * notmypudding (~notmypudd@c-67-173-28-127.hsd1.il.comcast.net) has joined #raspberrypi
[0:37] <Biganon> ok writing my own period worked thanks
[0:37] * Biganon (~Biganon@ks23183.kimsufi.com) has left #raspberrypi
[0:38] * prg3 (~prg3@S0106001ff3c8d965.ed.shawcable.net) has left #raspberrypi
[0:39] * CDR` (~CDR@46-18-105-35.static.vivaciti.org) Quit (Read error: No route to host)
[0:44] * CDR` (~CDR@46-18-105-35.static.vivaciti.org) has joined #raspberrypi
[0:51] * user82 (~user82@unaffiliated/user82) has joined #raspberrypi
[0:52] * hyperair (~hyperair@ubuntu/member/hyperair) Quit (Ping timeout: 246 seconds)
[0:52] * notmypudding (~notmypudd@c-67-173-28-127.hsd1.il.comcast.net) Quit (Remote host closed the connection)
[0:53] * wiiguy (~fake@unaffiliated/wiiguy) Quit (Quit: I just broke my connection, but no worries, we can rebuild it. We have the technology.)
[0:56] * TmvC (~TmvC@ Quit (Quit: Bye!)
[0:58] * mgottschlag (~mgottschl@reactos/tester/phoenix64) Quit (Read error: Connection reset by peer)
[1:00] * mgottschlag (~quassel@reactos/tester/phoenix64) has joined #raspberrypi
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[1:06] * bsdfox (~Bob@unaffiliated/bsdfox) Quit (Ping timeout: 264 seconds)
[1:06] * `teh1 (~teh1ghool@rrcs-173-197-87-90.west.biz.rr.com) has joined #raspberrypi
[1:07] <`teh1> With omxplayer + fifo, can I have it autoplay instead of waiting for the play command?
[1:08] <`teh1> doesnt seem like a preloaded fifo is possible either
[1:11] * NIN101 (~NIN@p5DD286F3.dip0.t-ipconnect.de) Quit (Quit: NIN101)
[1:12] * lupinedk is now known as Lupinedk
[1:16] * niknar (~nikhil@ool-44c45e94.dyn.optonline.net) has joined #raspberrypi
[1:17] * BlueDreams (~matt@24-205-95-34.dhcp.psdn.ca.charter.com) Quit (Quit: BlueDreams)
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[1:21] * user82 (~user82@unaffiliated/user82) Quit (Ping timeout: 276 seconds)
[1:26] * niknar (~nikhil@ool-44c45e94.dyn.optonline.net) has left #raspberrypi
[1:30] * ruif13 (~ruif13@a89-153-58-111.cpe.netcabo.pt) Quit (Quit: ruifigueiredo.me)
[1:34] * owen_ (~owen@ Quit (Read error: Connection reset by peer)
[1:35] * bertrik (~quassel@rockbox/developer/bertrik) Quit (Ping timeout: 264 seconds)
[1:36] * Olipro (~Olipro@uncyclopedia/pdpc.21for7.olipro) has joined #raspberrypi
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[1:36] * teepee (~teepee@p5084472A.dip0.t-ipconnect.de) has joined #raspberrypi
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[1:38] * NullMoogleCable (~NullMoogl@cpe-74-74-136-123.rochester.res.rr.com) Quit ()
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[1:40] * Gethiox (~gethiox@ Quit (Ping timeout: 276 seconds)
[1:40] * |J4R0N (~|j4r0n@unaffiliated/multiosuser) has joined #raspberrypi
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[1:43] * taza (~zap@unaffiliated/taza) Quit ()
[1:43] * Mr_Sheesh (~mr_s@unaffiliated/mr-sheesh/x-0757054) Quit ()
[1:46] * Geniack (~Geniack@unaffiliated/geniack) Quit (Disconnected by services)
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[1:46] * kcj (~casey@unaffiliated/kcj) has joined #raspberrypi
[1:51] * Felix29 (Felix@c-71-193-105-131.hsd1.in.comcast.net) Quit (Ping timeout: 260 seconds)
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[1:58] * MichaelC1 is now known as MichaelC
[1:59] * steve_rox (~steve@82-69-127-162.dsl.in-addr.zen.co.uk) has joined #raspberrypi
[2:02] * redarrow_ is now known as redarrow
[2:03] * BlueDreams (~matt@70-241-136-46.lightspeed.irvnca.sbcglobal.net) Quit (Quit: BlueDreams)
[2:04] * S0-2 (~sgra@gateway/tor-sasl/sgra) has joined #raspberrypi
[2:04] * datagutt (~datagutt@unaffiliated/datagutt) Quit (Quit: Computer has gone to sleep.)
[2:04] * spobat (~spobat@unaffiliated/spobat) Quit (Remote host closed the connection)
[2:05] * DDave (~DDave@unaffiliated/ddave) Quit (Ping timeout: 264 seconds)
[2:05] * zChrisHme (~zChris@unaffiliated/zchris) has joined #raspberrypi
[2:06] <zChrisHme> Isit bad practice to not use a powerdriven usb hub?
[2:06] * DDave (~DDave@unaffiliated/ddave) has joined #raspberrypi
[2:06] * SgrA (~sgra@gateway/tor-sasl/sgra) Quit (Ping timeout: 240 seconds)
[2:09] * simonwjackson (~simonwjac@128-79-207-130.hfc.dyn.abo.bbox.fr) Quit (Ping timeout: 276 seconds)
[2:09] * mgottschlag (~quassel@reactos/tester/phoenix64) Quit (Ping timeout: 260 seconds)
[2:10] <davor> I don't think it's bad practice per se to use one zChrisHme, but you're very likely to draw too much power the Pi can supply, especially since the hub also draws power for itself
[2:10] <PhotoJim> It would be okay if your USB devices are self-powered.
[2:10] <PhotoJim> if they draw power from the USB bus, much better to have a powered hub.
[2:12] * Out`Of`Control (~Viper@unaffiliated/outofcontrol/x-1373891) Quit (Quit: Free Software, Free Hardware, Free Culture, Free Spectrum)
[2:13] * redarrow_ (~redarrow@gateway/tor-sasl/redarrow) has joined #raspberrypi
[2:13] * mukti (~mukti@unaffiliated/mukti) has joined #raspberrypi
[2:14] * Thra11 (~Thra11@ Quit (Read error: Operation timed out)
[2:16] <mukti> I know there are lots of distros with small footprints (ex: DSL) that require very little space; but I don't know of any like this that work on the raspberry pi... are there any?
[2:16] * redarrow (~redarrow@gateway/tor-sasl/redarrow) Quit (Ping timeout: 240 seconds)
[2:16] <chithead> mukti: openwrt
[2:16] * redarrow_ is now known as redarrow
[2:18] * RaycisCharles (RaycisChar@cpc5-lutn10-2-0-cust681.9-3.cable.virginmedia.com) Quit ()
[2:19] <BCMM> mukti: minimal raspbian images?
[2:24] <nerdboy> mukti: like an openembeded poky image?
[2:24] <nerdboy> https://github.com/sarnold/meta-raspberrypi/wiki
[2:24] <nerdboy> you could even build one yourself...
[2:25] * ukgamer (~ukgamer@host81-132-148-109.range81-132.btcentralplus.com) Quit (Read error: Operation timed out)
[2:25] <nerdboy> the xorg image is about 560 MB
[2:27] <[Saint]> minimal (configurable) raspbian: https://github.com/hifi/raspbian-ua-netinst
[2:27] <[Saint]> ('server' config fits on a 512MB card)
[2:27] <zChrisHme> Do you know if it is harder to install Wifi on RaspBMC?
[2:28] <[Saint]> harder than?
[2:28] <zChrisHme> Raspbian os or other equivilant :P
[2:29] <sraue> its easyer on OpenELEC
[2:29] * kcj (~casey@unaffiliated/kcj) Quit (Ping timeout: 264 seconds)
[2:29] * agrajag (~agrajag^@CAcert/Assurer/agrajag) Quit (Remote host closed the connection)
[2:29] * NullMoogleCable (~NullMoogl@cpe-74-74-136-123.rochester.res.rr.com) has joined #raspberrypi
[2:30] * Midnigh2ker (~Toker@unaffiliated/midnightoker) Quit (Ping timeout: 240 seconds)
[2:30] * IT_Sean (~Ult_Ubunt@applefritter/IRCStaff/UltimateMacUser1) has joined #raspberrypi
[2:30] <zChrisHme> Another unrelated question. I read that with CEC you can control raspbmc with your tvcontroller. Do the tv need to be able to support CEC too?
[2:31] <sraue> you can control XBMC with the tvremote if your TV supports CEC, its a XBMC feature, not a Raspbmc own feature
[2:31] <BCMM> nerdboy: was it you who pointed me towards yocto a few days ago?
[2:32] * ukgamer (~ukgamer@host81-132-148-109.range81-132.btcentralplus.com) has joined #raspberrypi
[2:33] * brainwash (~brainwash@unaffiliated/brainwash) Quit (Read error: Operation timed out)
[2:35] * Firehopper (~Firehoppe@pool-71-185-114-64.phlapa.east.verizon.net) has joined #raspberrypi
[2:35] <nerdboy> probably...
[2:36] <BCMM> nerdboy: do you know of an easy way to make it generate an initramfs of the whole filesystem?
[2:36] * simonwjackson (~simonwjac@128-79-207-130.hfc.dyn.abo.bbox.fr) has joined #raspberrypi
[2:36] <nerdboy> that's a bit large...
[2:36] <BCMM> nerdboy: i think my image will fit in memory. no X.
[2:37] <nerdboy> an initramfs is typically as minimal as you need
[2:37] <BCMM> yeah, i know an initramfs is usually just there to get the real root mounted
[2:37] * cyphernaut (~user@gateway/tor-sasl/cyphernaut) has joined #raspberrypi
[2:37] <BCMM> but if my root fits in memory, and i have no desire to save filesystem changes...
[2:37] * IT_Sean (~Ult_Ubunt@applefritter/IRCStaff/UltimateMacUser1) has left #raspberrypi
[2:38] <nerdboy> haven't tried it on yocto, but i use genkernel to generate one for my desktop/server machines
[2:38] * double-you (~Miranda@188-193-36-82-dynip.superkabel.de) Quit (Quit: ja)
[2:38] * Mr_Sheesh (~mr_s@unaffiliated/mr-sheesh/x-0757054) has joined #raspberrypi
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[2:39] <nerdboy> BCMM: okay, you want one that will unpack in tmpfs or maybe a zram block device?
[2:40] <BCMM> nerdboy: i don't think so..
[2:40] <nerdboy> that should be doable...
[2:40] <BCMM> but i didn't entirely understand
[2:40] * xCP23x (~xCP23x@78-105-36-237.zone3.bethere.co.uk) Quit (Read error: Connection reset by peer)
[2:41] * BlueDreams (~matt@70-241-136-46.lightspeed.irvnca.sbcglobal.net) Quit (Client Quit)
[2:41] <nerdboy> yeah, one way could use an initramfs that creates the block device(s), runs mkfs and mounts, unpacks your rootfs, then mounts it
[2:42] <nerdboy> *remounts
[2:42] <BCMM> nerdboy: i meant, provided the rootfs is very small, is there a good reason not to just use the initramfs only (and never pivot)?
[2:42] <nerdboy> not sure if you'd want to pack the whole thing into the initial one
[2:43] <nerdboy> <shrug>
[2:43] <nerdboy> never tried it
[2:43] <nerdboy> you can try it and see...
[2:43] <BCMM> i tried making one manually, but as far as i could tell yocto's init didn't like it and shut down almost immediately
[2:44] <BCMM> also making one manually kinda defeats the awesome automation of yocto
[2:44] * simonwjackson (~simonwjac@128-79-207-130.hfc.dyn.abo.bbox.fr) Quit (Ping timeout: 264 seconds)
[2:45] <BCMM> nerdboy: could you point me in the direction of whichever bit of poky (or rather the raspi BSP) configures how the final images are generated?
[2:46] * `teh1 (~teh1ghool@rrcs-173-197-87-90.west.biz.rr.com) Quit (Quit: Leaving.)
[2:47] * teepee (~teepee@p5084472A.dip0.t-ipconnect.de) Quit (Ping timeout: 240 seconds)
[2:47] * teepee (~teepee@p4FFFDF0A.dip0.t-ipconnect.de) has joined #raspberrypi
[2:50] * CeilingKitten (~CeilingKi@206-248-157-46.dsl.teksavvy.com) Quit (Ping timeout: 240 seconds)
[2:51] * `teh1 (~teh1ghool@rrcs-173-197-87-90.west.biz.rr.com) has joined #raspberrypi
[2:52] * harish (~harish@ Quit (Remote host closed the connection)
[2:53] * BCMM (~BCMM@unaffiliated/bcmm) Quit (Quit: Konversation terminated!)
[2:53] <nerdboy> recipes-core/images
[2:54] <nerdboy> in the meta-raspberrypi layer
[2:55] <nerdboy> there are other configuration options in the local.conf that's generated when you do the oe-int-environment thing
[2:55] <nerdboy> that generates local.conf and bblayers.conf which are build specific
[2:56] <nerdboy> then there are machine and distro options, features, etc...
[2:57] <nerdboy> there are plenty of docs => https://www.yoctoproject.org/docs/current/poky-ref-manual/poky-ref-manual.html
[3:00] <zChrisHme> Noo kernel panic unable to mount VFS :(
[3:02] * Kane_ (~Kane@ADijon-257-1-52-147.w86-204.abo.wanadoo.fr) Quit (Quit: Night all o/)
[3:06] * caramagro (~Gustavo@189-82-163-181.user.veloxzone.com.br) has joined #raspberrypi
[3:07] <caramagro> Some of you have compiled libftdi library on slackware 14?
[3:11] * `teh1 (~teh1ghool@rrcs-173-197-87-90.west.biz.rr.com) has left #raspberrypi
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[3:18] * pkrnj (~pkrnj@bas2-montreal47-1279441932.dsl.bell.ca) Quit (Quit: Computer has gone to sleep.)
[3:20] * ReggieUK (ReggieUK@ Quit ()
[3:22] * darkbasic (~quassel@niko.linuxsystems.it) Quit (Read error: Connection reset by peer)
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[3:40] * zChrisHme (~zChris@unaffiliated/zchris) Quit (Ping timeout: 264 seconds)
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[3:48] * robscomputer (~robscompu@nat/yahoo/x-paostyfwcwtjjzwq) Quit (Read error: Connection reset by peer)
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[4:37] * Shirakawasuna (~Shirakawa@184-77-202-94.war.clearwire-wmx.net) Quit (Quit: Leaving)
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[5:00] * peterrus (~peterrus@5469EEFF.cm-12-2d.dynamic.ziggo.nl) Quit (Read error: Connection reset by peer)
[5:00] * LaxWasHere is now known as LaxWasThere
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[5:40] * notmypudding (~notmypudd@50-76-64-73-static.hfc.comcastbusiness.net) Quit (Remote host closed the connection)
[5:42] * simonwjackson (~simonwjac@128-79-207-130.hfc.dyn.abo.bbox.fr) Quit (Ping timeout: 240 seconds)
[5:47] * Mikelevel (~MoVeWoRk@unaffiliated/mikelevel) Quit (Read error: Connection reset by peer)
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[10:38] <linuxstb> Anyone tried valgrind (from the Raspbian repositories) recently? It worked for me a few months ago, but trying again today it gives me an error about an unrecognised instruction in libcofi_pi.so
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[12:43] <Lerg> Hello guys
[12:44] <Lerg> Is it possible to compile linux 3.11-rc4 for raspberry B? I need it for a video capture device driver support. It works with 3.11.
[12:45] <Lerg> From vanilla kernel or something.
[12:46] <Vostok> what kind of device?
[12:46] <mgottschlag> Lerg: there is a 3.10 pi kernel, you might be able to backport the driver
[12:46] <mgottschlag> or you might be able to port the kernel patches to the newer kernel
[12:47] <Vostok> we've found the usb implementation insufficient for our video capture applications
[12:47] <Lerg> EasyCap something.
[12:47] <Vostok> with easycap, yah
[12:47] <Lerg> Vostok: how come?
[12:47] <Lerg> mgottschlag: is it a hard work to apply patches? Or it's automatic.
[12:48] <mgottschlag> I am quite sure that the patches won't apply cleanly and you need to modify them
[12:48] <mgottschlag> and then you will need at least some kernel programming knowledge
[12:49] <Lerg> I see, I have just basic C knowledge
[12:50] <mgottschlag> backporting the driver might be easier
[12:50] <mgottschlag> but still requires some manual intervention
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[12:54] <Lerg> Vostok: what's your video experience with raspberry?
[12:54] <mgottschlag> btw, the rpi's USB implementation is known to have quite bad performance, but that's partly a hardware problem afaik
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[12:55] <Vostok> yeah, usb hw is faulty
[12:56] <Vostok> we trie to do real time motion detection of meteors
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[12:58] <Lerg> Vostok: one usb camera?
[13:01] <Vostok> analog bw video with easycap
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[13:44] <acovrig> I need to plug 12buttons&12LEDs into the pi, I plan on using a MCP23017 (http://www.adafruit.com/products/732), can I chain them together?
[13:45] <mgottschlag> you can put them on different i2c bus addresses on the same bus
[13:47] <acovrig> I am new to hardware (I got my pi ~1mo ago and thats my first); to address it, would I bridge 2 pins on the expander? if so which? (http://learn.adafruit.com/system/assets/assets/000/002/466/original/MCP23017.JPG)
[13:48] <acovrig> and would I plug the buttons/LEDs into GPA0-7 and GPB0-7 (and the pi to SCL,SDA,VSS,VDD)?
[13:49] <mgottschlag> A0-A2 are the pins to set the address
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[13:49] <mgottschlag> you connect them either to 3.3V or to 0V to achieve a "0" or "1" in the address
[13:52] <Tachyon`> http://fbcdn-sphotos-d-a.akamaihd.net/hphotos-ak-ash3/602019_722862157743240_509425949_n.jpg
[13:53] <acovrig> I currently have http://www.adafruit.com/products/815 (PWM driver) that I haven't done anything as far as addressing w/, so if I use the expander I'd need to put 3.3V on A1 and on the 2nd expander A2?
[13:54] <acovrig> if I put 3.3V on A1&A2 would that be like an A3 or would I not be able to access it?
[13:54] <mgottschlag> those three bits form a binary number
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[13:54] <mgottschlag> e.g., "1 1 1" (A3, A2, A1) would be the address 7
[13:55] <mgottschlag> or at least part of the address
[13:55] <mgottschlag> whereas "011" would be 3
[13:55] <mgottschlag> etc
[13:55] <acovrig> so A1=1, A2=2, A3=4
[13:55] <mgottschlag> or the other way round, idk
[13:56] <mgottschlag> you'd have to read the data sheet
[13:56] <mgottschlag> an i2c address is 7 bits long, the other bits are hardcoded in the chip
[13:57] * Kane (~Kane@ADijon-257-1-52-147.w86-204.abo.wanadoo.fr) has joined #raspberrypi
[13:57] <acovrig> ok, thanks; how far do you think I can get with buttons&leds (planning on running them over ethernet cable)-so I have the pi w/ethernet lines running to a few boxes w/a few of the buttons in them
[13:57] <Kane> /
[13:57] <mgottschlag> what do you mean by how far?
[13:58] <acovrig> would I need a booster r something like that?
[13:58] <mgottschlag> ah
[13:58] <mgottschlag> well, don't make your i2c bus too long
[13:59] <mgottschlag> but the button cables have to be 100s of meters so that the resistance is too high for them to work reliably
[13:59] <mgottschlag> probably even much more
[14:00] <Lerg> Is there an analog camera module for RPi?
[14:01] <SpeedEvil> Resistance isn't an issue.
[14:01] <mgottschlag> which part of it is supposed to
[14:01] <SpeedEvil> But capacitance, inductance, and stray noise and voltage pickup is.
[14:01] <mgottschlag> be analog?
[14:01] <SpeedEvil> As is lightning.
[14:03] <SpeedEvil> If they are just buttons - 10K pullup from the GPIO, 1uF low-inductance cap to GND in parallel to the GPIO, and then the switch wired with two 1K resistors in series on each side - to ground and to the GPIO - with the resistors next to the pi
[14:04] <SpeedEvil> This will give decent noise immunity and spike protection - though won't protect from direct nearby strikes
[14:04] <acovrig> I am planning on using http://www.adafruit.com/products/491 as the buttons/LEDs and would 1 'station' ~50ft away from the pi and another ~150ft away from the pi...
[14:04] * kcj (~casey@unaffiliated/kcj) Quit (Ping timeout: 264 seconds)
[14:04] <Lerg> Analog camera, yes, not digital CCD.
[14:05] <Lerg> There is camera board, but it's digital.
[14:05] <mgottschlag> I doubt it
[14:05] <SpeedEvil> Similarly - the LEDs - 220 ohm resistors connected to both ground and the GPIO, with the switch in series with them - with the resistors on the nearside of the cable.
[14:05] <SpeedEvil> And a 1uF cap from the GPIO to ground.
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[14:05] <mgottschlag> there are almost no electronics hobbyists who use analog cameras
[14:08] <acovrig> SpeedEvil: so GPIO (a pin on the MCP23017) ->(10K resistor,(1uF->ground)),150ft line->ground of LED/button,3.3V rail (from the pi)->(positive of the LED/button)?
[14:09] <SpeedEvil> Wait - what's the mcp*?
[14:10] <SpeedEvil> I was assuming this was a simple pi+buttons_leds and cables
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[14:10] <megaproxy> does the pi keep its own time in anyway?
[14:10] <megaproxy> does it need network to update it...
[14:10] <mgottschlag> SpeedEvil: simple i2c gpio chip, so that doesn't change anything
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[14:10] <SpeedEvil> You're not trying to run I2C over a long cable?
[14:11] <acovrig> that is my question, would it work?
[14:11] <SpeedEvil> No
[14:11] * cccyRegeaneWolfe is now known as cccy_RegeaneWolf
[14:11] <mgottschlag> acovrig: what you have decribed there sounds like you don't run i2c but just the gpio pin through a long cable, so that works
[14:13] <acovrig> yes, i2c-> MCP23017 (next the the pi) then run off those pins over the long lines. My question is if I can run like that over a 150ft ethernet cable (I figure Id use ethernet bc we have a spool just sitting) or if I'd need some form of booster somewhere
[14:14] <SpeedEvil> You can't run I2C across a long wire
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[14:14] <acovrig> is i2C is the SDA/SCL pins or the GPIO pins?
[14:14] <mgottschlag> SDA/SCL
[14:14] <mgottschlag> and ethernet cable is good enough for LEDs and buttons
[14:15] <acovrig> ok, then I wouldn't be running that over a distance, just the GPIO pins
[14:18] <acovrig> mgottschlag: I'm guessing I'd use the 3.3V rail for those lines, should I put a cap on the buttons end of the line? and my plan is to have 1 line in the cable be GND that all the buttons/LEDs share, would that still work over the distance?
[14:19] <mgottschlag> well, I don't completely understand how you wire your LEDs/buttons as I don't see why you would need both 3.3V and GND in the cable
[14:20] <mgottschlag> but as long as you don't tie any two GPIO pins together, you can use one wire for multiple GND/3.3V lines
[14:20] <mgottschlag> (actually, GPIO pins of course do not qualify as neither 3.3V nor GND, they are completely different nets)
[14:22] <mgottschlag> a cap at the button end of the line might help with getting only one edge per key press
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[14:27] <mgottschlag> has anybody here ever worked with infrared communication with remote controls?
[14:28] <SpeedEvil> yes
[14:28] <mgottschlag> is there any frequency standard?
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[14:29] <SpeedEvil> Not really
[14:29] <SpeedEvil> Somewhere about 38khz is common.
[14:29] <SpeedEvil> But it varies from about 32-40khz - with different things using different frequencies.
[14:29] <SpeedEvil> The coding standard on top of that varies too.
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[14:31] <mgottschlag> hm, okay
[14:32] <mgottschlag> I guess I can find out the frequency with a fast ADC and a photo transistor?
[14:32] <mgottschlag> the frequency of an arbitrary sender
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[14:34] <SpeedEvil> Yes.
[14:34] <SpeedEvil> Or google it
[14:34] <mgottschlag> well, I wanted to try and repurpose some remote control I had still lying around
[14:35] <mgottschlag> that sounds a bit hard to google
[14:35] <SpeedEvil> If you happen to have the original device, you can just ignore it.
[14:35] <SpeedEvil> And pull out the sensor
[14:35] <mgottschlag> hm, that's a good idea
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[14:41] <future28> Hi all, I'm looking to build an os for the pi which is basically just a kernel with bash and a package manager, and I can install what I was over that. Is that possible? Any suggestions?
[14:41] <future28> what I want*
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[14:48] <tehKitten> I want to compile the snippet found here (http://www.raspberrypi.org/phpBB3/viewtopic.php?t=30347&p=264983#) but I get the message "/usr/bin/ld: cannot find -lwiringPi" when trying to compile. (Using the compile line from the program.) What can I best do?
[14:48] <tehKitten> my goal is to run a simple pwm fan on the raspberry, if there is another snippet, perhaps another language, I would be happy too
[14:50] <Joeboy> tehKitten: You probably need to pass the directory containing the wiringPi lib to gcc
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[14:50] <tehKitten> it's in /usr/include, even with using -L/usr/include it still errors
[14:51] <Joeboy> /usr/include is for headers
[14:51] <Joeboy> You want a directory with something like wiringPi.o or wiringPi.a in it
[14:51] * ruben-ikmaak (~quassel@541A275B.cm-5-3a.dynamic.ziggo.nl) Quit (Read error: Operation timed out)
[14:51] <Joeboy> or wiringPi.so
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[14:52] <tehKitten> there's only a .h file on my system even though the package from the pidora repo is installed
[14:53] <tehKitten> let's compile wiringpi myself
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[14:54] <tehKitten> there we go, now it works
[14:55] <tehKitten> thanks for the help
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[15:00] <mgottschlag> future28: of course that is possible, but don't underestimate the complexity
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[15:03] <future28> mgottschlag: How complex do you think it is?
[15:04] * cccyRegeaneWolfe is now known as cccy_RegeaneWolf
[15:04] <Lerg> Can I know usb bus limitations on rpi? Like in numbers. I need to connect 2..3 usb cameras (capture devices for analog cameras) and a 3G modem. I wonder if it can handle it.
[15:05] <mgottschlag> future28: I don't know, but a package manager needs networking, so you need at least a proper init system
[15:06] <mgottschlag> and scripts to configure the network
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[15:25] <future28> thanks mgottschlag
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[15:28] <pa> so, i took the time to write down what's happening with the latest raspbian:
[15:28] <pa> http://raspberrypi.stackexchange.com/questions/8955/realtek-8192cu-as-access-point-strikes-back
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[16:04] <future28> If I have a complete linux file system, copying it to the sd card does not work ie pi wont boot. Anyone tell me why?
[16:05] <Mortvert> You only copy the file?
[16:05] <Mortvert> Or do you image the file onto the card?
[16:05] <future28> Mortvert: I copied the entire file system - I made my own linux from scratch
[16:06] <Mortvert> future28 - that might be your problem..
[16:06] <Firehopper> it needs to be made into a image file
[16:06] <future28> Right, sorry, I wasn't aware.
[16:06] <Firehopper> its okay.. :)
[16:06] <Firehopper> dont ask me how to do that :) dont know :)
[16:06] <future28> Firehopper: I'll see how I go making an image
[16:07] <Firehopper> :>
[16:07] <Firehopper> I
[16:08] <Firehopper> I'm having fun with debian wheezy on my desktop in a VM
[16:08] <Lerg> oh, usb ports are underpowered
[16:09] <hifi> future28: you need the first partition to be fat32 and have the firmware files, including the linux kernel
[16:09] <hifi> and your LFS is for the pi arm cpu, right?
[16:09] <future28> hifi: Yeah!
[16:10] <hifi> then do that and pray it works, you might need to tell the kernel to use the right partition for rootfs
[16:10] <future28> hifi: How many partitions do I need?
[16:10] <hifi> two at least
[16:10] <hifi> one for /boot files and one for /
[16:11] <hifi> and /boot needs to be fat32
[16:11] <future28> Ah that's my problem
[16:11] <future28> Right
[16:11] <future28> I have it all in the one partition
[16:11] <hifi> that's probably your first problem ;)
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[16:18] <future28> Cheers hifi, I'll give it a boot partition and see how I go
[16:18] <future28> What goes inside the boot partition? Just what's inside /boot ?
[16:18] <future28> or /boot itself
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[16:19] <hifi> all the firmware files and your kernel
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[16:19] <hifi> https://github.com/raspberrypi/firmware/tree/master/boot you could try with that
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[16:20] <hifi> it will boot the kernel for sure (kernel.img) but if your root works, that's another story
[16:20] <future28> hifi got it all in /boot/firmware
[16:20] <hifi> move it to /boot and make sure /boot is the first partition and fat32
[16:20] <future28> Cheers
[16:21] <future28> I'm off to bed but I will test it in the morning, you may hear from me again!
[16:21] <future28> Thanks for the help
[16:21] <hifi> np
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[16:32] <zleap> hi
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[16:35] <|J4R0N> Has anyone else had problems with a powered usb2 hub on raspberrypi B running raspbian? It works with my laptop, but lsusb wont show it or anything I've plugged into it on the pi (plugging it directly in the pi, bypassing the hub) and it works fine.
[16:36] * oldtopman (~oldtopman@unaffiliated/oldtopman) Quit (Ping timeout: 240 seconds)
[16:37] <PipeDale> Afternoon.
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[16:52] <Lerg> |J4R0N: how is it connecteD?
[16:52] * troulouliou_dev (~troulouli@unaffiliated/troulouliou-dev/x-4757952) Quit (Remote host closed the connection)
[16:52] <Lerg> what wire?
[16:52] <|J4R0N> to the pi?
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[16:54] <Lerg> yes
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[16:55] <|J4R0N> I just have the the usb plug coming from the hub plugged in one of the two usb host plugs on the pi.
[16:56] <|J4R0N> and the hubs power cord is plugged to the back of the hub and the wall
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[16:59] <Lerg> I see. OK, some wires do perform bad.
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[17:00] <|J4R0N> I thought it could be that, so i plugged it in my laptop and had no trouble
[17:02] <|J4R0N> im using this hub btw http://www.ebay.com/itm/7-Port-USB-Hub-for-the-Raspberry-Pi-/330853533357
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[17:09] <pa> the most painless way to compile a kernel module on raspbian?
[17:09] <pa> do i really have to recompile the whole kernel, because of the lack of kernel headers on raspbian?
[17:10] <plugwash> you could always use a raspbian kernel instead of a raspberry pi foundation kernel
[17:11] <plugwash> unlike the raspberry pi foundation kernels the raspbian kernels come with a corresponding headers package
[17:12] <plugwash> (install linux-image-rpi-rpfv and linux-headers-rpi-rpvf and then adjust your config.txt to boot the newly installed kernel)
[17:14] * gyeben (51b75805@gateway/web/freenode/ip. Quit (Quit: Page closed)
[17:16] <pa> hm
[17:16] <pa> i could try
[17:16] <PipeDale> O_o
[17:16] <PipeDale> someone's pi been up 160days :\
[17:16] <Mortvert> that's not unusual
[17:17] <PipeDale> Mortvert: i bet they have /boot on sd card and / on a usb hdd
[17:17] <Mortvert> i had my pi up for 60 days before SD died
[17:17] <Mortvert> (Died due to someone flipping main breaker)
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[17:18] <Mortvert> But then, i belive my overall lifetime of this card was 6+ months
[17:18] <PipeDale> Mortvert: mine was up for over 3months, then mother decided to trip whole house power
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[17:18] <PipeDale> but it never killed my SD card.
[17:19] <chithead> a ups for the pi (in form of a portable usb power pack) can be had for as little as $15
[17:19] <PipeDale> but scandisk micro card died when i overclocked to 1ghz :p
[17:19] * [Saint] (~saint@rockbox/user/saint) Quit (Ping timeout: 264 seconds)
[17:19] <Helldesk> what does it matter where /boot is?
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[17:19] <Helldesk> or the rest of it
[17:19] <Helldesk> I mean, the other way around
[17:20] <pa> i heard overclocking, especially the core, fries a lot of cards
[17:20] <PipeDale> Helldesk: if you have /boot on SD card, you won't lose important information
[17:20] <PipeDale> if the root partition is on a USB hdd
[17:20] <chithead> overclocking used to cause sd card corruption, this issue is presumably addressed in recent firmware
[17:21] <chithead> but it didn't destroy the cards, just scrambled some data
[17:21] <CeilingKitten> pa, overclocking it cant keep the sync time to write to the sd card its fixed with a format and reinstall usually
[17:21] <CeilingKitten> it doesnt "fry" the card, its still usable its just data corruption
[17:22] <PipeDale>
[17:22] * double-you (~Miranda@188-193-36-82-dynip.superkabel.de) Quit (Quit: ja)
[17:22] <PipeDale> decent stats
[17:22] <pa> CeilingKitten, right, it just screws the partition
[17:22] <PipeDale> steady 53c :)
[17:22] <pa> still, not a pleasant thing, especially when you reinstall and things dont work as before anymore :)
[17:23] <Firehopper> morning CK
[17:23] <PipeDale> I still think transcend cards are good
[17:23] <hifi> Helldesk: /boot needs to be on the CF card because the broadcom chip loads its own firmware from it
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[17:25] <CeilingKitten> Greets Firehopper
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[17:26] <CeilingKitten> could you put a symlink and store the entire OS and boot somewhere else, and the Card would just be symlinked to UUID (usbdrive)?
[17:26] <CeilingKitten> i dont think that be useful since you are still stuck with the card in, and the kernel is already loaded so it costs nothing resource wise to be on the sd
[17:27] <CeilingKitten> >_> nvm i think i asked a pointless question
[17:29] <hifi> the firmware and kernel needs to reside in the card, no way around it
[17:30] <hifi> unless you have a chain loading kernel that can read the ext partition or something
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[17:30] <ShiftPlusOne> aye, you can have a bootloader on the sdcard and load a kernel from elsewhere, but why bother.
[17:31] <Firehopper> for speed maybe?
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[17:31] <hifi> is there any bootloader pi?
[17:31] <CeilingKitten> I know i asked but then released it was pointless
[17:31] <Firehopper> supposedly usb drives are faster than sd cards
[17:31] <hifi> Firehopper: not relevant at that point
[17:31] <pa> why do i get ln: failed to create hard link `/boot/initrd.img-3.6-trunk-rpi.dpkg-bak' => `/boot/initrd.img-3.6-trunk-rpi': Operation not permitted
[17:31] <hifi> pa: because /boot is fat32 and doesn't support symlinks
[17:31] <Firehopper> hifi :) see how little I know :>
[17:31] <ShiftPlusOne> there's uboot and fake booloaders that are actually tiny linux distros. I don't know if uboot can boot a kernel for usb though.
[17:31] <hifi> bootloader for pi*
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[17:32] <hifi> it would actually be more convenient to have a bootloader
[17:33] <hifi> those fat32 issues like pe encountered are cumbersome
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[17:33] <ShiftPlusOne> Well, give uboot a go. I haven't myself, so I don't know what state it's in, but I know it's usable.
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[17:35] <CeilingKitten> For security sets is chroot or jails sort of like a VM minus the second OS install?
[17:35] <CeilingKitten> i also seen something called fakeroot
[17:36] <ShiftPlusOne> a chroot is more like a sandbox environment rather than a VM
[17:36] <ShiftPlusOne> Oh and there are also bootloaders which replace bootcode.bin and run straight GPU code from serial. Those are mostly used for testing videocore code without having to copy a new bootcode.bin every single time. But it would be cool if one of those could fire up the ARM core and start a linux kernel, but as I understand it, they don't know how to do that yet.
[17:36] <CeilingKitten> AHammar, i;ve seen it isolate people to home fodlers on sftp, but if its a sandbox i can run programs in it safely?
[17:36] <CeilingKitten> oops* wrong highlight lol sorry
[17:37] <CeilingKitten> i used sandboxie on windows and loved the concept =), it seems like a good idea to sandbox services
[17:38] <ShiftPlusOne> The most you can ruin is the chroot environment. I wouldn't trust it too far though. For example, I wouldn't let random people ssh into a chroot jail.
[17:39] <hifi> ShiftPlusOne: uboot might be interesting, allowing linux's /boot to be on ext partition fixes a lot of issues with kernel installation
[17:40] <ShiftPlusOne> hifi, hopefully it can load a kernel from an ext partition then.
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[17:43] <pa> hifi, sorry, then how do i specify in config.txt what kernel to boot?
[17:44] <hifi> kernel=vmlinuz...
[17:45] <ShiftPlusOne> pa, have a skim through http://elinux.org/RPiconfig
[17:45] <hifi> you also want to set the initramfs to generated initrd image
[17:45] <hifi> it's not strictly needed anymore though
[17:46] <hifi> the initrd image is rather useless as the latest 3.6 build for raspbian has almost all required modules for bootable system
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[17:46] <hifi> the one in the repos doesn't though, it's still missing vfat
[17:49] <apo> My kernel doesn't have any modules :P
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[17:50] <hifi> it's not uncommon
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[17:55] <pa> for initramfs they want to know also an address.. what should i put there?
[17:55] <hifi> you can ignore that
[17:55] <hifi> just don't put anything
[17:55] * nitdega (nitdega@2602:306:2423:391:1520:100f:b44e:79eb) has joined #raspberrypi
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[17:56] <pa> ah ok
[17:56] <pa> so like initramfs initrd.img-3.6-trunk-rpi
[17:56] <hifi> yup
[17:56] <pa> ok thanks! i try to reboot, let see
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[18:01] <Felix29> Does anybody know about working CNC machine projects with the pi?
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[18:13] <ShiftPlusOne> Felix29, maybe more of a CNC channel or ##electronics question. I can't think of anything pi-specific to consider other than how you would control a CNC machine... in which case it's a general GPIO question and the CNC part is unimportant.
[18:14] <Felix29> it's not. the timing is critical and that's really the pi question
[18:14] <Felix29> i saw people were trying to use emc2, but i think it's not working right
[18:15] <SpeedEvil> I'd go with BBB for fine control
[18:15] <SpeedEvil> the PRUs are damn near ideal for stepper driving
[18:15] <ShiftPlusOne> How critical is timing? What sort of margins are you talking about?
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[18:16] <Felix29> mach3 for example runs at 200 kHz (max) with negligible delay from the os
[18:17] <Felix29> I'll look into the bbb, that one sounds good
[18:17] <SpeedEvil> What's the maximum delta-t you can accept in your app.
[18:17] <SpeedEvil> PRU = a little very fast microcontroller core.
[18:17] <SpeedEvil> On-die.
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[18:17] <Felix29> about 0.1 microsecond would be good
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[18:18] <ShiftPlusOne> hrmph
[18:18] <SpeedEvil> I would say it's essentially certain you don't need that accuracy.
[18:18] <Felix29> if your step speed is 200 kHz, that corresponds to a few percent
[18:18] <SpeedEvil> For nearly all CNC devices I can imagine.
[18:19] <SpeedEvil> Step speed is never, ever 200KHz
[18:19] <Felix29> ok
[18:19] <biberao> hi
[18:19] <biberao> anyone knows if its possible to display on a webpage whats showing on xmbc?
[18:19] <SpeedEvil> That's 60000RPM on a 200 step motor
[18:19] <SpeedEvil> Not happening.
[18:20] <Felix29> 500 rpm with 128 microstep
[18:20] <SpeedEvil> That's not step speed.
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[18:20] <SpeedEvil> That's more PWM resolution
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[18:21] <Felix29> ok, so the pi couldn't do that, right?
[18:21] <nerdboy> moin
[18:21] <ShiftPlusOne> I am not knowledgeable when it comes to pi's GPIO or CNC, but if the pi is really not up to it, even with RTOS patches, you can always throw an avr micro on the gpio to take higher level commands from the pi and control the CNC.
[18:22] <Felix29> yeah, that's the sort of project i'm looking for - maybe someone is using grbl with a pi
[18:22] <SpeedEvil> The Pi could perhaps do it - with the appropriate code to drive the DMA unit
[18:23] <SpeedEvil> The BBB is likely to do it lots easier with the appropriate program running in the PRU
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[18:29] <davor> these are some weird pot markings
[18:29] <davor> 5K246M
[18:29] <davor> well it's a 5K pot, but what's the rest...
[18:29] <pa> so with this kernel (raspbian) it works
[18:29] <pa> i take that the raspberry kernel guys must have screwed up something with their kernel
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[18:37] <ShiftPlusOne> davor, I am guessing that's either a coding for the manufacturing date or something to do with tolerance and something else. =/
[18:37] <davor> hmm, probably. meaning nothing useful heh. thanks
[18:38] <davor> if its resistance is about half of its declared resistance when the dial is halfway, it's pretty safe to say it's a linear pot right?
[18:38] <SpeedEvil> yes
[18:38] * VitaBushido (~avem@unaffiliated/avem) Quit (Quit: I quit)
[18:38] <davor> thanks
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[18:41] <davor> ha, no matter how much I search, I can't figure out the difference between a pot and a rheostat. from what I can tell, if the pot's maximum resistance is R, the resistance between the first and third pin is always R. also if the resistance between the first and second pin is R1, and between the second and third pin R2, then R1+R2=R
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[18:43] <davor> if I turn the dial all the way to one side, R1=R, and R2=0, and if I turn it all the way to the other side, then R2=R and R1=0
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[18:46] <apo> rheostats have two terminals
[18:46] <apo> pots three
[18:46] <mgottschlag> not all
[18:46] <mgottschlag> I mean, there are rheostats with three terminals
[18:46] <mgottschlag> for example, pots ^^
[18:47] * simonwjackson (~simonwjac@128-79-207-130.hfc.dyn.abo.bbox.fr) has joined #raspberrypi
[18:47] <davor> haha
[18:47] <davor> I mean I still haven't managed to figure out why there would be three pins :p
[18:47] <davor> what the third one is there for
[18:47] <mgottschlag> the third is there to build simple voltage dividers
[18:47] <mgottschlag> I mean, linear voltage dividers
[18:48] <mgottschlag> otherwise a fixed second resistor would introduce nonlinear parts
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[18:48] <mgottschlag> at least that is one possibility, there might be other reasons
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[18:50] <davor> ah, so basically if I connect GND to the first pin, and let's say 5v to the third, I could regulate what voltage I'd get out the second pin?
[18:50] <SpeedEvil> davor: If you connect one of the fixed pins to 0V, the other to the supply voltage - then the output is the ratio of the shaft posisiton
[18:50] <SpeedEvil> yes
[18:50] <davor> wow, that's pretty handy, thanks!
[18:50] <davor> and if I wire the second pin to GND, I just have a simple rheostat?
[18:50] <SpeedEvil> Or if you connect one to an audio signal - the output is a variable voltage audio signal
[18:51] <davor> hmm
[18:51] <davor> pretty cool
[18:51] <ShiftPlusOne> keep in mind that the output voltage will also depend on the load.
[18:52] <davor> I thought voltage is constant, and current changes depending on the load?
[18:52] <mgottschlag> davor: a load on the output reduces the resistance of one side
[18:52] <mgottschlag> because every output can be seen as a second resistor, then you have two resistors in parallel
[18:52] <ShiftPlusOne> that's the case when you have a regulated supply... a voltage divider is not a regulated supply.
[18:53] <ShiftPlusOne> davor, take a look at http://hyperphysics.phy-astr.gsu.edu/hbase/electric/voldiv.html for the maths behind it.
[18:53] <davor> ahhh that makes sense mgottschlag
[18:53] <davor> oh hey I've seen that site before when reading about caps, good site
[18:53] <davor> thanks!
[18:54] <davor> the diagrams are quite nice
[18:54] * xCP23x (~xCP23x@78-105-36-237.zone3.bethere.co.uk) Quit (Ping timeout: 264 seconds)
[18:54] <davor> thanks guys, makes much more sense now :)
[18:55] <ShiftPlusOne> davor, if you're interested in more about that sort of thing, check out https://www.youtube.com/watch?v=s1CM6P80EyQ
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[18:56] <biberao> anyone knows a way to add live tv to screenly?
[18:59] <davor> thanks ShiftPlusOne , watching now, it's very interesting
[18:59] <ShiftPlusOne> np
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[19:10] <davor> the guy's great, excellent video
[19:12] <ShiftPlusOne> Yup, he explains the little practical things that other sources tend to leave out and he also gives intuitive explanations rather than only equations.
[19:16] <davor> yeah exactly
[19:16] <davor> exactly what a beginner like me has been looking for with little success of actually finding something like that
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[19:21] <davor> hm, if I understand correctly, just regarding pots in general, a pot is sort of like 2 variable resistors in series. one pin is connected on one end, one on the other and one in between, and turning the knob reduces one's resistance and increases the other's so that their total series resistance remains the same?
[19:21] <SpeedEvil> yes
[19:22] <ShiftPlusOne> It's more like a single resistor and you're selecting at which point you want to tap from.
[19:22] <SpeedEvil> In reality, they are made from one tsemicircular track of resistive material.
[19:22] <SpeedEvil> And a wiper that connects to one point on that track
[19:23] <ShiftPlusOne> davor, while not exactly the sort of thing you'd use for your application, take a look at http://www.radiomuseum.org/images/radio/bulgin_a_f_barking/variable_resistor_rv2_901669.jpg.
[19:23] <davor> ShiftPlusOne, ah, yeah that's a bit easier to visualise :p I think the end result is the same though
[19:24] <ShiftPlusOne> Yeah, the end result is the same, but I think you're overcomplicating it.
[19:24] <davor> ahh, I get it
[19:24] <davor> yeah indeed haha
[19:24] <davor> I have a funny way of visualising things
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[19:25] <davor> yeah it makes sense, thanks guys :)
[19:25] <ShiftPlusOne> np
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[19:28] <davor> one more question, why is it generally advised, in order to use a pot as a variable resistor, to short the first two pins and use them as one? can't I just use the second and third pin, while leaving the first pin alone?
[19:28] * gyeben (51b75805@gateway/web/freenode/ip. has joined #raspberrypi
[19:28] <pa> crazy.. with this kernel hostapd was working fine.. i rebooted a couple of times, and now it stopped working
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[19:30] <ShiftPlusOne> davor, I haven't received such advice myself and have left a pin hanging without any problems before. So... no idea.
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[19:30] * gyeben (51b75805@gateway/web/freenode/ip. Quit ()
[19:30] <davor> I mean, most sites I've looked at before say to connect the two, I don't see any reason to do so tbh. thanks
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[19:40] <nerdboy> pa: which kernel?
[19:41] <pa> 3.6-trunk-rpi
[19:41] <pa> where should i put the loading options for a module?
[19:49] <mgottschlag> pa: they are in a file in the boot partition
[19:49] * LaxWasThere is now known as LaxWasHere
[19:50] <hifi> mgottschlag: what?
[19:50] <hifi> module options are in /etc/modprobe.d IIRC
[19:50] <mgottschlag> hm, indeed
[19:50] <hifi> in debian/raspbian
[19:50] <nerdboy> wouldn't that be /etc/modprobe.d or similar?
[19:50] <mgottschlag> I was thinking about in-kernel drivers
[19:50] <nerdboy> or modules.d...
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[19:51] <nerdboy> man, my fingers are slow today...
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[19:56] <nerdboy> pa: a simple wpa_supplicant adhoc network won't do it for you?
[19:58] <pa> probably it would, after all..
[19:58] <pa> and i would save myself some liver
[20:00] <nerdboy> i believe you can still set a key if you need to
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[20:02] * zleap (~ps@dsl-217-155-46-222.zen.co.uk) has joined #raspberrypi
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[20:03] <zleap> hello
[20:03] <pronto> hello
[20:05] <zleap> hows u
[20:06] <pronto> you*
[20:06] <pronto> i'm good, yourself?
[20:06] <zleap> i am good
[20:06] <pronto> well, good besides this bug my raspberry pi has :(
[20:06] <zleap> ah
[20:06] * Alina-malina (Alina-mali@host- has joined #raspberrypi
[20:06] <pronto> http://i.imgur.com/igbqWdH.jpg < its a pretty bad bug
[20:08] <zleap> lol
[20:08] <zleap> is it better to use .login or .bashrc to run start up commands
[20:08] <pronto> i use an intern
[20:09] <zleap> intern
[20:09] * Armand (~martin@87-194-165-154.bethere.co.uk) Quit (Quit: Leaving)
[20:10] <zleap> just looking at the current pi site tip
[20:11] <zleap> pronto, what is an intern other than student worker
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[20:12] * suehle (~rsuehle@fedora/suehle) has joined #raspberrypi
[20:12] <zleap> hi suehle
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[20:14] * cccyRegeaneWolfe is now known as cccy_RegeaneWolf
[20:15] <nerdboy> zleap: depends, what are you trying to do?
[20:17] <zleap> ok
[20:17] <zleap> right now i have cowsay -f text iat the end of .bashrc
[20:17] * bsdfox_ (~Bob@unaffiliated/bsdfox) Quit (Ping timeout: 264 seconds)
[20:18] <zleap> just wondered if it is more appropriate to use .bashrc
[20:18] <nerdboy> there are several specific startup files you could use, either in your home dir or /etc
[20:18] <zleap> ok
[20:18] <zleap> whbat i have done works fine
[20:18] <ShiftPlusOne> zleap, http://stackoverflow.com/questions/415403/whats-the-difference-between-bashrc-bash-profile-and-environment
[20:19] <ShiftPlusOne> zleap, so it depends on whether you want it to execute only after you log in or every time you open a terminal window.
[20:19] <suehle> zleap, hi
[20:19] <nerdboy> .bashrc is sourced by all interactive bash shells on startup
[20:19] <zleap> thaok
[20:19] <zleap> ok thanks
[20:19] <zleap> will read up
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[20:23] <troulouliou_dev> nerdboy, is there still a deifference between interactive and login shell ?
[20:26] <nerdboy> afaik, yes..
[20:26] <ShiftPlusOne> yes
[20:26] <zleap> have a look on stackoverflow
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[20:47] <davor> haha, a local store has an electrolytic capacitor marked as 1 MF
[20:47] <davor> price, about 6 cents a piece
[20:47] <davor> they probably meant 1 microfarad heh...
[20:47] <ShiftPlusOne> any other markings on it?
[20:48] <ShiftPlusOne> the M may refer to the temperature rating
[20:48] <davor> it should be capacity, it just says electrolyte 1 MF 100V
[20:49] <davor> they have 3.3 MF, 2.2 MF etc
[20:49] <davor> heh
[20:49] <davor> it's a croatian shop, but see for yourself hehe http://www.chipoteka.hr/artikli/grupa/131002/kondenzatori/?filter[6418]=ELEKTROLITSKI
[20:50] <ShiftPlusOne> nice
[20:50] <ShiftPlusOne> though to correct myself, M would refer to tolerance rather than temperature (though it does look like a mistake in this case)
[20:51] <davor> ah, noted. good to know in the future, thanks!
[20:51] <ShiftPlusOne> Hm... I seem to be able to read Croatian. Very similar to Russian.
[20:51] <ShiftPlusOne> Or maybe a little closer to Ukrainian.
[20:51] <davor> yeah hehe, all slavic languages
[20:52] * ShiftPlusOne puts 'Croatian' under spoken languages on the resume >.>
[20:54] <davor> hahaha
[20:54] <davor> put serbian in too
[20:54] <davor> it's basically the same
[20:54] <ShiftPlusOne> yup
[20:54] <davor> I mean, if you can understand one, you'll have no problems with the other
[20:54] <bts__> ShiftPlusOne, try with that language: http://blog.nettigo.pl/ ;)
[20:56] <ShiftPlusOne> I feel like if I remembered more of Ukrainian I would understand more of that.
[20:57] <ShiftPlusOne> But I can puzzle out about a third, not counting the words derived from English.
[20:59] * Mikelevel (~MoVeWoRk@unaffiliated/mikelevel) Quit (Ping timeout: 264 seconds)
[20:59] <davor> what's the difference between noname and brand name soldering irons?
[20:59] <davor> weller for instance
[20:59] <davor> if we compare two that are of the same power
[21:00] <ShiftPlusOne> Either way, I recommend you get an adjustable one that shows you the temperature.
[21:00] <ShiftPlusOne> But low quality tips can lose their plating and become a pain to work with
[21:00] <davor> hm, I don't have enough money to get a soldering station...
[21:00] <ShiftPlusOne> I don't know how much the quality of the iron itself matters... I mean its job is only to be hot....
[21:01] <davor> at the moment anyway
[21:01] <davor> yeah my thoughts exactly
[21:01] <ShiftPlusOne> davor, are you looking at ones where you can replace the tips?
[21:01] <davor> my main motive for getting a weller is my local shop stocks their tips (doesn't stock tips for the one I have at the moment) so I wouldn't have to go across town to get them
[21:01] <davor> yeah
[21:01] <davor> I am
[21:02] <ShiftPlusOne> davor, the one I have is $50 on ebay and is more than good enough. (search for 937D)
[21:02] <davor> ah, looks pretty nice
[21:06] * mgottschlag (~mgottschl@reactos/tester/phoenix64) Quit (Read error: Connection reset by peer)
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[21:11] * Jevermeister (~Jevermeis@unaffiliated/jever) Quit (Ping timeout: 260 seconds)
[21:14] <davor> hmm, soldering stations are pretty expensive here
[21:14] <davor> upwards of 200 USD
[21:14] <davor> and I need it soonish
[21:14] <davor> I could just wire a light dimmer to an extension cord
[21:14] <davor> and hook my iron to that
[21:15] <davor> and check the temperature with my multimeter's temp probe
[21:15] * mgottschlag (~quassel@reactos/tester/phoenix64) has joined #raspberrypi
[21:15] <ShiftPlusOne> what could possibly go wrong
[21:15] <davor> hah, not much I hope
[21:15] <davor> how are AC pots rated anyway?
[21:16] <ShiftPlusOne> A light dimmer doesn't use a pot... that would be a lot of wasted energy O_o
[21:17] <davor> ah, pardon me
[21:17] <davor> ahh, I just looked up a schematic
[21:17] <dagerik> will this adapter destroy my hdmi port? http://www.fasttech.com/products/0/10000397/1043800-hdmi-male-to-vga-female-adapter-cable-white
[21:18] <dagerik> i forgot to check after buying
[21:18] <davor> oh well hopefully I won't be able to fry anything if I'm careful (without a soldering station), that is if I don't apply excess heat, just enough to melt the solder
[21:18] <dagerik> im hearing horror stories of hdmi ports being broken
[21:18] * Hydra (~Hydra@46-65-54-87.zone16.bethere.co.uk) has joined #raspberrypi
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[21:23] <ShiftPlusOne> I haven't seen broken hdmi ports come up as a general theme here O_o
[21:25] * merovingio (~merovingi@unaffiliated/merivingio) Quit (Remote host closed the connection)
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[21:44] <ShiftPlusOne> Hm, the dog keeps barking =/
[21:45] <ShiftPlusOne> Ah, looks like the neighbours are on disputed territory (he lays claim to their backyard, I think).
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[22:48] * nitdega (nitdega@2602:306:2422:e261:63:2eb1:30f6:38a2) Quit (Ping timeout: 240 seconds)
[22:48] <davor> would this do to power a USB hub regarding safety and all? output current and voltage are okay. site is croatian, but the description is in english http://www.chipoteka.hr/artikl/87343/adapter-switch-dc-3-12-v-22a-mw3ip25gs#tab-specs-tab
[22:48] * dj_pi (~dj@c-107-5-25-243.hsd1.mi.comcast.net) has joined #raspberrypi
[22:49] * nitdega_ (nitdega@2602:306:2422:e261:63:2eb1:30f6:38a2) Quit (Ping timeout: 240 seconds)
[22:49] <davor> alternatively, this one http://www.chipoteka.hr/artikl/19179/adapter-switch-dc-6-15-v-3a-mw3h36gs#tab-info-tab
[22:50] <davor> the hub needs 5v, 2.1A
[22:50] <Encrypt> davor, What for?
[22:50] <Encrypt> Okay, I misunderstood :)
[22:50] <davor> to power a USB hub, it came without a power adapter
[22:50] <Encrypt> To power your hub
[22:50] <davor> yep
[22:50] * loadbang (~loadbang@host81-157-35-56.range81-157.btcentralplus.com) has joined #raspberrypi
[22:51] * RaycisCharles is now known as [_]P
[22:51] <Encrypt> I think it would be okay, sure ;)
[22:52] <Encrypt> The first one would be enough
[22:52] * loadRPi (~pi@host81-157-35-56.range81-157.btcentralplus.com) has joined #raspberrypi
[22:52] <Encrypt> should*
[22:54] * [_]P is now known as JethroTroll
[22:56] <davor> thanks
[22:57] <Encrypt> davor, That's a four-ports hub, right? :p
[22:57] <davor> yep heh
[22:58] <Encrypt> davor, That's logic
[22:59] <Encrypt> Since a hub often (and always?) delivers 500 mA in each port... 2.1 = 0.5*4 + 0.1, the 0.1 mA must be "eaten" :p by the hub
[22:59] <davor> hehe, I see
[23:00] * DocHolliday (~DocHollid@99-99-29-57.lightspeed.iplsin.sbcglobal.net) has joined #raspberrypi
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[23:05] <SpeedEvil> The 100mA is technically a 'unit load' - that the hub is specified to use.
[23:05] <SpeedEvil> It is probably not in fact 100mA in reality - but few people bother measuring the actual current
[23:07] <rikkib> I do
[23:07] <rikkib> I made a special adapter
[23:08] * Thra11 (~Thra11@ Quit (Quit: WeeChat 0.4.1)
[23:08] <SpeedEvil> Me too.
[23:08] <SpeedEvil> it has an opamp and shizzle.
[23:10] * bts__ (~bartek@ Quit (Ping timeout: 240 seconds)
[23:10] <rikkib> http://www.zlham.geek.nz/images/news/bkout.jpg
[23:10] <SpeedEvil> Shunt to drop .05V at 2A, opamp set for 100* gain, power supply from the input, filter stage with .1s/10s time constant, and a tiny analog meter
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[23:16] <pa> so, it seems raspbian kernel goes panic
[23:17] <pa> apparently with NetworkManager
[23:17] <pa> the 3.6-trunk-rpi
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[23:33] <pa> reverted to foundation kernel.. which now seemingly works.. this really puzzles me
[23:34] * Encrypt (~Chuck-nor@AMontsouris-553-1-46-152.w92-151.abo.wanadoo.fr) Quit (Quit: Quitte)
[23:37] <davor> is solder iron tip cleaning paste worth it?
[23:38] * ukgamer (~ukgamer@host81-132-148-109.range81-132.btcentralplus.com) Quit (Ping timeout: 264 seconds)
[23:38] <rikkib> No
[23:38] <rikkib> Use a wet sponge
[23:38] <davor> cheers
[23:38] <rikkib> Often soldering stations come with a sponge tray
[23:40] <ShorTie> regular old rag works preaty good too
[23:40] <rikkib> If buying a soldering station get a spare element and spare tips. Even cheap soldering stations last many years
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[23:41] <davor> a spare element?
[23:41] <rikkib> Heating element that goes inside
[23:42] <davor> I have a soldering iron holder with a little sponge tray http://www.thetoolbar.net/contents/media/23554_sis.jpg
[23:42] <davor> ahh
[23:42] <davor> nah I don't have enough money for a station at the moment
[23:42] <davor> I was thinking of just getting a Weller 40W iron
[23:42] <rikkib> Todays circuit boards require a temp controlled iron
[23:43] <davor> hm...
[23:43] <rikkib> Heat them up to much and the tracks lift
[23:43] <davor> I see
[23:43] <davor> they're pretty expensive though, and I don't know about getting a no-name one
[23:43] * double-you (~Miranda@188-193-36-82-dynip.superkabel.de) has joined #raspberrypi
[23:44] <rikkib> I paid about $100NZD for mine
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[23:45] <davor> I only have about half that to spend at the moment
[23:45] <rikkib> Named brands around $300NZD
[23:46] <davor> I'd have to order everything for it, tips, the handle, heck, even the thing itself off ebay
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[23:49] <davor> I think I could save up a bit for this http://www.chipoteka.hr/artikl/29952/lemna-stanica-sa-temp-kontrolom-zd-931
[23:52] <rikkib> My iron is old school... Analog meter
[23:52] <rikkib> Less electronics to go wrong
[23:53] <davor> hehe, nice
[23:54] <davor> I think I'll go with this one http://www.velleman.eu/products/view/?id=349593
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[23:56] <Martin`> anyone played with pilight yet? Trying to turn my light of but it stays on :(
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