#raspberrypi IRC Log


IRC Log for 2014-07-01

Timestamps are in GMT/BST.

[20:54] -rajaniemi.freenode.net- *** Looking up your hostname...
[20:54] -rajaniemi.freenode.net- *** Checking Ident
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[20:55] -rajaniemi.freenode.net- *** Looking up your hostname...
[20:55] -rajaniemi.freenode.net- *** Checking Ident
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[20:55] -NickServ- This nickname is registered. Please choose a different nickname, or identify via /msg NickServ identify <password>.
[20:55] -NickServ- You have 30 seconds to identify to your nickname before it is changed.
[20:55] -NickServ- You are now identified for DataBot.
[20:55] -MemoServ- You have 2 new memos.
[20:55] -MemoServ- To read them, type /msg MemoServ READ NEW
[20:55] * RaspberryPiBot (~PircBot@unaffiliated/datagutt/bot/databot) has joined #raspberrypi
[20:55] * Topic is 'Unofficial RaspberryPi IRC channel but "Blessed" by the Foundation as the ONE channel. Logs @ http://srv.datagutt1.com <> Channel Rules as of 6 May '14: http://tiny.cc/h7za1w <> Getting help on IRC: http://tiny.cc/p9za1w <>'
[20:55] * Set by IT_Sean!~Ult_Ubunt@applefritter/IRCStaff/UltimateMacUser1 on Tue May 06 21:39:57 CEST 2014
[20:56] * debichu (~debichu@ Quit (Quit: Going offline, see ya!)
[20:57] <gordonDrogon> binaryhermit, I have one of those 15AH anker units too - I ran a Pi for a shade under 24 hours on it.
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[20:57] <datagutt> linuxstb: and its back
[20:57] <datagutt> :)
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[22:23] <Tipolosko> hi
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[22:24] <Tipolosko> re
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[22:25] <Tipolosko> Hi guys, what are the maximum usb transfer rate between two ext4 formatted hd?
[22:25] * LaraMaia_ (~laracraft@ has joined #raspberrypi
[22:25] <Tipolosko> i can obtain 6-7 Mb/sec, is this the maximum that raspberry can do? :)
[22:26] * mythos (~mythos@unaffiliated/mythos) Quit (Ping timeout: 252 seconds)
[22:26] <tig|> I may be wrong but basically you will be sharing one USB2 but for the data transfer
[22:26] * x1337807x (~x1337807x@207-170-205-178.static.twtelecom.net) has joined #raspberrypi
[22:26] <tig|> *bus not but
[22:26] * LaraMaia (~laracraft@ Quit (Disconnected by services)
[22:26] <Tipolosko> tig|: sure, but i see a very high cpu usage
[22:27] * LaraMaia_ is now known as LaraMaia
[22:27] <Tipolosko> is that normal?
[22:28] <pksato> Tipolosko: a HD or flash disk (SSD, pendrive)?
[22:28] <Tipolosko> pksato: two standard hdd; one 2,5" 320gb and one 3,5 3Tb
[22:29] <Tipolosko> both ext4 formatted
[22:29] <Tipolosko> the 2,5" one is also the rootfs
[22:29] <Tipolosko> files are not heavily fragmented, already checked that
[22:29] <pksato> on my experiency on desktop, USB disk transfer varies between 12Mb/s to 23MB/s.
[22:30] <pksato> on not shared bus.
[22:30] <pksato> RPi share one USB bus.
[22:30] * ThKo (~ThKo@p4FED4FC7.dip0.t-ipconnect.de) has joined #raspberrypi
[22:30] <pksato> 6MB/s can be resonable value.
[22:30] <gordonDrogon> Tipolosko, is this spinning rust, or usb data keys?
[22:30] <ThKo> Hey, I want to put my Shellscript into /usr/bin but I’ve got no permissions?! I’m using Raspberry PI Model B with Raspbian.
[22:31] <pksato> now writing on USB flash drive 10x more fast. after flow this http://linux-howto-guide.blogspot.com.br/2009/10/increase-usb-flash-drive-write-speed.html
[22:31] <gordonDrogon> ThKo, you probably want to put it into /usr/local/bin and you need root permissions to do so.
[22:32] <ThKo> Ahhh local ok
[22:32] <ThKo> Thanks :)
[22:32] * Matrikular (~Miranda@2a02:8108:8f80:418:5015:7e09:114a:f922) has joined #raspberrypi
[22:32] <Tipolosko> pksato: i've had an mk802 (Allwinner a10) and with the same disks (and same shared hub architecture) was getting up to 18Mb/sec, with very low cpu usage
[22:33] <steffes1> Hey anyone using emulation station? if so what do you think of it?
[22:33] <pksato> mk802 share usb bus?
[22:33] <Matrikular> hello, could it be that there is something wrong with the "latest" rpi kernel regarding wlan0 (im a total linux noob btw)
[22:33] <linuxstb> ThKo: If it's just for your use (i.e. your normal user), you could put it in $HOME/bin/ (and add that to your PATH).
[22:33] <Tipolosko> pksato: with an usb hub.. yes :D
[22:34] <ThKo> Ok I think it’s better…It’s only a lil shellscript which should copy a folder every night at 12 PM
[22:34] <Tipolosko> btw it have "only" two usb port + one otg port (slower)
[22:34] <Matrikular> i set up my wlan in the latest raspiab wheezy image (via the desktop tool)
[22:34] <ThKo> The folder which should be copied is located at /var/www/elearning/
[22:34] <Tipolosko> gordonDrogon: spinning rust? do you refer to traditional spinning disks? well.. yes :)
[22:35] * Corey84 (~Corey84@unaffiliated/corey84) has joined #raspberrypi
[22:35] <Tipolosko> i've read something about usb flags that can be passed to kernel..
[22:35] <gordonDrogon> Tipolosko, yea - that's what I meant :)
[22:35] * wroos (~wroos@h-79-52.a259.priv.bahnhof.se) has joined #raspberrypi
[22:36] <Tipolosko> but seems that those flags are now obsolete (USB FIQ )
[22:36] <Matrikular> it gets its ip address via dhcp (fritzbox) after a couple of reboots, i cant connect to ssh anymore, a ping from a windows machine always returns a wrong ip in the first entry, followed by 2-3 correct entries telling me that there is a timeout
[22:37] <gordonDrogon> Matrikular, I have a Pi with uptime of over 2 days running with a Wi-Fi dongle. Seems fine to me (latest kernel)
[22:37] <gordonDrogon> Matrikular, kernel: 3.12.22+ #691
[22:38] <Matrikular> gordonDrogon: thank you for the feedback is there anything within my error description that sounds familiar to you?
[22:38] <gordonDrogon> Matrikular, not that I recognise - however my Pi is statically configured.
[22:38] <Matrikular> gordonDrogon: i just looked it up, my pi got 3.12.23+
[22:39] <gordonDrogon> Hm. 23.
[22:39] <gordonDrogon> that must have come out just yesterday.
[22:39] * gordonDrogon checks.
[22:41] * GentileBen (~RaycisCha@cpc5-lutn10-2-0-cust681.9-3.cable.virginm.net) Quit ()
[22:41] <gordonDrogon> Hm. no update on the kernel on my Pi. still 3.12.22+
[22:42] <Tipolosko> cp is using all available cpu during transfer
[22:42] <Matrikular> i used: sudo rpi-update
[22:42] <gordonDrogon> oh, I never use that. I stick to the foundation kernels.
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[22:46] <ThKo> Why doesn’t this work? Bashscript: vardate=`date+“%Y%m%d_%H%M%S“` and then directory=$vardate ?
[22:46] <ThKo> vardate is everytime empty
[22:47] * GerhardSchr (~GerhardSc@unaffiliated/gerhardschr) Quit (Remote host closed the connection)
[22:47] <ppq> because “ is not "
[22:47] * Corey84 (~Corey84@unaffiliated/corey84) Quit (Ping timeout: 255 seconds)
[22:47] <ppq> looks like you pasted that from a fancy blog ;)
[22:47] <ThKo> Sorry, it is " … My mistake
[22:47] <tig|> 'nings all, I don't suppose anyone has an adafruit 16 way pwm/servo board? having a bit of an odd issue with mine
[22:47] <ThKo> I’ve tipped it again in this channel. In my bash it’s "
[22:48] <gordonDrogon> ThKo, it's got stupid quotes round it.
[22:48] <ppq> and there should be a space between date and +
[22:48] * girafe (~girafe@ip-187.net-82-216-137.issy4.rev.numericable.fr) has joined #raspberrypi
[22:48] <ppq> with a space it works for me
[22:48] <ThKo> Ah ok mom
[22:49] <ThKo> Oh yes, it works…The whitespace, thank you
[22:50] <shiftplusone> Heh.... I always think "why is he calling him mom.... oh right, German" any time I see that.
[22:50] <ppq> somebody told me to use $() instead of ``. i don't remember the reason but it sounded right
[22:50] * jiuweigui (~jiuweigui@unaffiliated/jiuweigui) Quit (Quit: I gotta run. I've got universe to master.)
[22:50] <ppq> shiftplusone, lol
[22:50] <girafe> hello
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[22:52] <girafe> what can I find to make a wireless network (AP mode) with a rpi ?
[22:53] * drivelights (~bhez@unaffiliated/drivelights) has joined #raspberrypi
[22:55] <gordonDrogon> girafe, first google hit: http://xmodulo.com/2014/04/raspberry-pi-wifi-access-point.html
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[22:57] <shiftplusone> I recommend static ip over udhcpcd and its alternatives
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[23:00] <girafe> gordonDrogon : I already googled it, but now I wanted a human advice
[23:01] <geordie> ...as that web page was computer-generated... ;)
[23:01] <girafe> gordonDrogon : because It's difficult to know how much power will be required, or if the wireless adapter works well with full options :)
[23:01] <shiftplusone> use hostapd and a static ip </advice>
[23:02] <girafe> gordonDrogon : and generally what's working best in the community
[23:02] * binarydog (~weechat@37-186-3-39.ip.as39912.net) has joined #raspberrypi
[23:02] <shiftplusone> You don't have many options.... you have a choice of hostapd or hostapd.
[23:02] <girafe> gordonDrogon : I would like to make like a sort of little wireless hard drive
[23:02] * tombrough (~tom@cpc4-newt3-0-0-cust54.newt.cable.virginm.net) Quit (Quit: Leaving.)
[23:03] <gordonDrogon> it's all about power on the Pi.
[23:04] <girafe> gordonDrogon : for example, today I understood that was a huge difference between alfa cards
[23:04] <gordonDrogon> make sure you have plenty of it - powered hub to power the Wi-Fi dongle and drive...
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[23:04] * Thra11 (~Thra11@host-2-97-241-251.as13285.net) Quit (Ping timeout: 248 seconds)
[23:05] <ThKo> Now I’ve got my backup.sh in /home/pi/Backup/backup.sh…In crontab I’ve got implemented 30 0 * * * sudo /home/pi/Backup/backup.sh … Is that all? Or do I’ve to add this to PATH?!
[23:06] <girafe> gordonDrogon : that was my second question :) I have difficulties to find a good usb powered hub
[23:06] <girafe> to be sure it'll be able to power rpi + usb wireless + usb key + hard drive ?
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[23:10] * ThKo (~ThKo@p4FED4FC7.dip0.t-ipconnect.de) Quit (Quit: ThKo)
[23:10] <Matrikular> https://www.adafruit.com/products/961
[23:11] <Matrikular> just look for the specs and search for one on amazon or some other shop nearby
[23:12] * pksato (~PEBKAC@unaffiliated/pksato) Quit (Quit: Problem Exists Between Keyboard And Chair)
[23:12] <Matrikular> youll find similar recommendations in the foundations forum
[23:13] * intothev01d (~intothev0@unaffiliated/intothev01d) has joined #raspberrypi
[23:13] <Matrikular> http://elinux.org/RPi_Powered_USB_Hubs
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[23:18] <Tipolosko> girafe: i'm using this as usb hub http://www.manhattan-products.com/hi-speed-usb-20-ultra-hub
[23:18] <Tipolosko> very good hub in my opinion
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[23:29] * Tipolosko leaving, thanks for the help! :D
[23:29] * ryanteck (~ryan@fsf/member/Ryanteck) Quit (Quit: Leaving.)
[23:31] <Si1en7> Is there anyone here familiar with displaying specific characters (degrees symbol, heart, etc) on the 16x2 Adafruit LCD?
[23:31] * Tipolosko (~tipolosko@ Quit (Quit: KVIrc 4.2.0 Equilibrium http://www.kvirc.net/)
[23:32] * neocharles (~neocharle@ Quit (Ping timeout: 264 seconds)
[23:32] <gordonDrogon> you need to download them into the display.
[23:33] <Si1en7> How would I accomplish that?
[23:34] <gordonDrogon> if you're using C I can tell, you if Python, then I'd suggest looking at their documentation.
[23:34] * mint (~Corey84@unaffiliated/corey84) has joined #raspberrypi
[23:34] <gordonDrogon> there are 8 slots for user-defined characters.
[23:34] <gordonDrogon> you need to send it 8 bytes (characters are 8x8)
[23:35] * Vulcan090 (~Barbeara@cpc23-pool13-2-0-cust8.15-1.cable.virginm.net) Quit (Ping timeout: 264 seconds)
[23:35] <Si1en7> So, along the lines of this thread? http://forums.adafruit.com/viewtopic.php?f=47&t=38623
[23:36] <gordonDrogon> I guess so, but I don't program in Python.
[23:36] <Si1en7> Fair enough.
[23:37] * datagutt (~datagutt@unaffiliated/datagutt) Quit (Ping timeout: 240 seconds)
[23:37] * wroos (~wroos@h-79-52.a259.priv.bahnhof.se) Quit (Ping timeout: 252 seconds)
[23:39] <Si1en7> Thanks, gordonDrogon, for the help.
[23:40] * dblessing (~drewb@h210.236.190.173.static.ip.windstream.net) Quit (Quit: dblessing)
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[23:49] <sla_erick> which do you consider is the best way to detect presence with bluetooth? Using plain bluetooth scanning or using iBeacons?
[23:50] <sla_erick> and by best I mean longer distance and less error
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