#raspberrypi IRC Log

Index

IRC Log for 2018-01-13

Timestamps are in GMT/BST.

[0:03] <sbef> uffi
[0:05] * Silversword (silverswor@gateway/vpn/privateinternetaccess/silversword) Quit (Ping timeout: 256 seconds)
[0:06] * TheSin (~TheSin@node-1w7jra1z8gh9dl4673lw76th2.ipv6.telus.net) has joined #raspberrypi
[0:09] * PlasmaStar (Plasma@unaffiliated/plasmastar) Quit (Read error: Connection reset by peer)
[0:09] * sbef (50b434ba@gateway/web/freenode/ip.80.180.52.186) Quit (Ping timeout: 260 seconds)
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[0:11] * mmazing (~mmazing@unaffiliated/mmazing) Quit (Quit: Leaving)
[0:13] <reds> i want to build/install from binaries mpv with hardware support for the rpi, but i'm not really in mood to waste 2+ hours of compiling ffmpeg; any tutorials that actually work on newest raspbian?
[0:13] <realies> is it possible to achieve this without recompiling the kernel? https://raspberrypi.stackexchange.com/questions/74379/use-usb-as-power-only-no-filesystem-access-on-external-device
[0:13] <reds> https://nwgat.ninja/quick-easy-compiling-mpv-for-raspberry-pi/ this one worked for me alongtimeago, but unfortunately, it doesn't work anymore - it craps itself on old dependences
[0:14] <extor> Watchmaker's tools are so cheap on ebay nowadays. Got me wondering whether you can do PCB repair work with them too. Or modding electronic components. Like if there's potential for that. Or even making something custom like a CMOS camera with a custom microscope lense. Maybe watchmaker tools can craft high quality lenses out of quartz?
[0:15] * d1zz (~gt@unaffiliated/gtt) Quit (Ping timeout: 252 seconds)
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[0:28] * teclo- (42@unaffiliated/teclo) Quit (Quit: Lost terminal)
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[0:28] * darksim (~quassel@78-70-247-31-no186.tbcn.telia.com) Quit (Remote host closed the connection)
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[0:33] * guideline (guideline@gateway/vpn/privateinternetaccess/guideline) Quit (Quit: Leaving)
[0:34] * yohnnyjoe (~yohnnyjoe@c-73-129-2-10.hsd1.dc.comcast.net) has joined #raspberrypi
[0:34] <Hitechcg> realies: not tested, but try this: echo 0 > /sys/bus/usb/devices/usb(something)/authorized
[0:36] <Hitechcg> actually this looks better https://stackoverflow.com/questions/18765725/turning-off-a-single-usb-device-again
[0:36] * AgentVenom (~textual@c-73-198-19-227.hsd1.nj.comcast.net) Quit (Quit: Textual IRC Client: www.textualapp.com)
[0:37] <Hitechcg> the second answer looks best
[0:38] * guideline (guideline@gateway/vpn/privateinternetaccess/guideline) has joined #raspberrypi
[0:39] * saint_ (~saint_@unaffiliated/saint-/x-0540772) Quit (Quit: UNIVERSE CORRUPTED. REBOOT (Y/N) ?)
[0:39] <Hitechcg> except instead of --reset-usb you probably want --detach-only
[0:42] * immibis (~chatzilla@122-59-200-50.jetstream.xtra.co.nz) has joined #raspberrypi
[0:46] * multifractal (~multifrac@217.242.9.51.dyn.plus.net) has joined #raspberrypi
[0:47] <multifractal> I want to transfer videos from my laptop to a raspberry pi over my wifi network. I'm using scp but it's quite slow, at about 500-1000KB/s. The airdrop between macs is significantly faster. Is it just that the raspberry pi is not powerful enough? It starts quickly, like 4MB/s but then trails off and often stalls before finishing really slowly. Might I expect better results if I wire it to the router with an ethernet cable?
[0:47] <Hitechcg> realies: alternate way https://projectgus.com/2014/09/blacklisting-a-single-usb-device-from-linux/
[0:48] * WLL (~WLL@unaffiliated/wll) Quit (Quit: My MacBook has gone to sleep. ZZZzzz…)
[0:49] <Hitechcg> multifractal: how far is the Pi from the router? hardwiring would most likely make things faster
[0:50] <multifractal> Hitechcg: It's about 4 metres from the router. At that point I suppose I might as well make one of those ethernet cables with the twisted wires and connect the laptop to the pi directly (In which case, what copy program do you use to transfer files?).
[0:53] <Hitechcg> you don't need a crossover cable; almost all modern hardware auto-detects whether you need crossover or not and switches the jack
[0:55] <Hitechcg> I'm guessing that the bottleneck is the Pi's CPU performing SSH crypto
[0:56] * TheFatherMind (~TheFather@cpe-104-34-204-52.socal.res.rr.com) Quit (Read error: Connection reset by peer)
[0:56] <Hitechcg> unfortunately, I can't really think of a good easy alternative
[0:56] <Hitechcg> what OS is your laptop running?
[0:56] * TheFatherMind (~TheFather@cpe-104-34-204-52.socal.res.rr.com) has joined #raspberrypi
[0:59] <realies> Hitechcg, thank you so much!
[1:00] * guideline (guideline@gateway/vpn/privateinternetaccess/guideline) Quit (Ping timeout: 256 seconds)
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[1:04] * WLL (~WLL@unaffiliated/wll) has joined #raspberrypi
[1:05] <multifractal> Hitechcg: OK that's interesting, but how does it explain the ability of the pi to do the first part quickly and then slow down. I am transferring from Ubuntu 16.04 and Mac Sierra or something.
[1:06] <shauno> you could try scp -c arcfour .. it's a pretty pathetic crypto (RC4, 1987) by modern standards, but should be much easier on the cpu
[1:06] <Hitechcg> multifractal: no clue, but I experience the same behavior scp'ing a file to localhost
[1:07] <Hitechcg> I'm guessing it has something to do with running out of cache
[1:07] <shauno> (obviously this is bad advice anywhere you're using crypto for a reason heh)
[1:08] <Hitechcg> Raspbian Stretch rc4 support is disabled in ssh; not sure if it's enable-able or not
[1:09] <multifractal> That makes sense. It's just a home network, should I worry so much about encryption of TV shows I'm transferring between computers?
[1:10] <shauno> really? bummer. (I can't imagine it's back in jessie, that'd be illogical)
[1:12] <Habbie> multifractal, to figure out if encryption is the pain, look at 'top' on the pi while copying
[1:14] <multifractal> Do I want to be paying attention to the CPU% value? It seems to always hover around 0.6-0.9, but sometimes it spikes to this value when just sitting around idling. I'm not really sure how to interpret it.
[1:14] <Habbie> yes
[1:14] <Habbie> it spikes to where?
[1:15] <Habbie> you should push '1' once
[1:15] <multifractal> Wait, what quantity is Cpu%(s)? It just saw it go to 2.4.
[1:15] <Habbie> depending on your pi model you will get multiple lines then
[1:15] * ManTK (~mantk@unaffiliated/mantk) Quit (Quit: ZNC - http://znc.in)
[1:16] <Habbie> the quantity is percentage of time
[1:16] <Habbie> for various factors over the whole line
[1:16] <Habbie> s/factors/components/
[1:16] <Habbie> 'id' might be the most interesting
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[1:18] <multifractal> Oooh I see they're for different processes like user, system and so forth... so 100 - id will be total usage of CPU.
[1:18] <Habbie> correct
[1:18] <Habbie> id is idle
[1:19] <Habbie> and below you can see per process usage
[1:19] <Habbie> so the question is what kind of usage you see during a transfer that you are unhappy about
[1:20] <multifractal> It's transferring quite slow ~150KB/s (which is much slower than airdrops between macs here), but the CPI id value is still about 98%.
[1:20] <Habbie> and the %CPU for the sshd or related process?
[1:21] <multifractal> *CPU
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[1:23] * tunekey (~tunekey@unaffiliated/tunekey) Quit (Remote host closed the connection)
[1:23] <multifractal> sshd is hovering around the top of the list of processes (I guess they're sorted by most intensive?)
[1:23] * teclo- (42@unaffiliated/teclo) Quit (Quit: Lost terminal)
[1:23] <Habbie> by default, yes
[1:23] <Habbie> but with what %CPU?
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[1:24] * Noldorin (~noldorin@unaffiliated/noldorin) Quit (Ping timeout: 256 seconds)
[1:24] <multifractal> It;s jumping around 5-15%
[1:25] <Habbie> that sounds like encryption is not your bottleneck
[1:25] * Dimik (~Dimik@172.56.35.27) Quit (Read error: Connection reset by peer)
[1:25] <Habbie> unless the other side is struggling
[1:26] <Habbie> unlikely for a mac compared to a pi
[1:26] <multifractal> Habbie: The laptops are pretty solid.
[1:26] <Habbie> solid at what?
[1:26] <multifractal> They're just genreally fast, powerful, cost way to much money.
[1:26] <Habbie> right, yes
[1:26] * GerhardSchr (~GerhardSc@unaffiliated/gerhardschr) Quit (Remote host closed the connection)
[1:27] <multifractal> e.g. looks like I have 92% CPU idle on this ubuntu laptop right now
[1:27] <Habbie> ok
[1:27] <Habbie> so really sounds like crypto is not your bottleneck
[1:28] <Habbie> you could try without crypto of course, doing HTTP or FTP
[1:28] <Habbie> for various reasons it may still help in practice
[1:28] * Cromaglious_ (~quassel@cpe-108-185-117-240.socal.res.rr.com) Quit (Read error: No route to host)
[1:28] <multifractal> Habbie: I really know nothing about networking. What program would I use for the copy to try just FTP or HTTP?
[1:29] <Habbie> you'd need some ftp/http server
[1:29] <Habbie> on the client side, curl is great for both
[1:29] <multifractal> OK and then run an ftp/http server program on the server (pi)?
[1:29] <Habbie> yes
[1:29] <Habbie> alternatively, rsyncd + rsync
[1:30] <multifractal> Just by the by, do you know what transfer protocol apple airdrop uses under the hood?
[1:31] <Habbie> no clue, sorry
[1:32] <shauno> airdrop's several layers of bizarre
[1:33] <Habbie> no doubt
[1:33] <multifractal> rsync doesn't use encryption?
[1:33] * WLL (~WLL@unaffiliated/wll) Quit (Quit: My MacBook has gone to sleep. ZZZzzz…)
[1:34] <Habbie> multifractal, rsync to rsyncd does not; most people use rsync over ssh to get encryption
[1:34] <shauno> it does negotation over bluetooth, transfers over wifi (device-to-device, regardless of wired network or current AP association), and I believe it transfers CoreData objects.
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[1:37] <multifractal> shauno: Is negotiation like the initial handshake - hello I am an apple, are you an apple, yes I am, OK let's transfer CoreData objects over WIFI?
[1:42] * GenteelBen (~GenteelBe@cpc111801-lutn14-2-0-cust55.9-3.cable.virginm.net) Quit ()
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[1:45] * multifractal (~multifrac@217.242.9.51.dyn.plus.net) Quit (Ping timeout: 255 seconds)
[1:47] <shauno> yeah, the whole "would you like to dance" bit. I got filez, you want?
[1:48] * multifractal (~multifrac@217.242.9.51.dyn.plus.net) has joined #raspberrypi
[1:48] <shauno> 'n how you find who's available to transfer to, etc
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[2:11] <realies> any good high gain 2.4+5ghz usb adapters?
[2:11] <realies> that are compatible with rasbian?
[2:12] * harmlessgryphon (~default@d47-69-199-50.col.wideopenwest.com) has joined #raspberrypi
[2:13] * dreamon_ (~dreamon@unaffiliated/dreamon) Quit (Ping timeout: 268 seconds)
[2:14] * Maai (~pi@133.143.93.209.dyn.plus.net) Quit (Quit: mmmmmmmmmmmmMMMMMMMMMM_M_M_M_M_M_M_)
[2:15] * harmlessgryphon (~default@d47-69-199-50.col.wideopenwest.com) has left #raspberrypi
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[2:21] <mk-fg> shauno, Maybe it does BT discovery/handshakes for power-saving reasons?
[2:22] <mk-fg> Assuming that BT on these devices eats much less than wifi
[2:22] <Habbie> probably because the two macs may not be on the same wifi when airdrop starts
[2:22] <Habbie> might be power reasons as well still
[2:23] * multifractal (~multifrac@217.242.9.51.dyn.plus.net) Quit (Ping timeout: 240 seconds)
[2:24] * harmlessgryphon (~default@d47-69-199-50.col.wideopenwest.com) Quit (Quit: stuck in a cobweb.)
[2:25] * Case77 (~Case77@pool-108-44-26-19.albyny.east.verizon.net) has joined #raspberrypi
[2:27] * multifractal (~multifrac@217.242.9.51.dyn.plus.net) has joined #raspberrypi
[2:35] <shauno> I can't confess to know why they do things. but a lot of it seems to be simply because it started off as phone-to-phone, not mac-to-mac
[2:35] <shauno> (kinda. they started off with airdrop on mac & airdrop on iOS which were incompatible with each other. the mac switched over to the iOS version and stuff got sane(ish))
[2:37] <shauno> I assume there's some benefit to keeping them all on the same protocol, because it does strike me as nuts that the mac wont' advertise on wifi/ethernet. especially since it's so chatty about everything else
[2:40] <Habbie> no airdrop in mdns?
[2:44] <realies> is Ralink RT5572 supported?
[2:45] * dh1tw (~dh1tw@96.red-88-6-90.staticip.rima-tde.net) Quit (Quit: My MacBook Pro has gone to sleep. ZZZzzz…)
[2:46] * Silversword (silverswor@gateway/vpn/privateinternetaccess/silversword) has joined #raspberrypi
[2:48] <multifractal> OK so my next attempt will be to find/buy an ethernet cable and connect the pi to the router. And maybe to try connecting the pi to the laptop directly with the ethernet cable, but I've never done that and not sure how to actually transfer the files.
[2:50] * Dark-Show (~Dark-Me@24.222.225.142) has joined #raspberrypi
[2:50] <realies> someone please ping me if they have used high gain 5ghz/2.4ghz wifi adapters compatable with pi/raspbian
[2:51] * kw21 (~kw21@D978E830.cm-3-1d.dynamic.ziggo.nl) Quit (Quit: Leaving)
[2:57] <Dark-Show> I see the dev channel is pretty low on use count, so I'll ask here as well.
[2:57] <Dark-Show> Anyone here well versed at YUV420p support in dispmanx? I'm currently getting VC4 lock-ups if I use anything other than RGB variants.
[3:00] * shantorn (~W7SAK-Sha@67-5-140-73.ptld.qwest.net) has joined #raspberrypi
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[3:23] * multifractal (~multifrac@217.242.9.51.dyn.plus.net) Quit (Ping timeout: 276 seconds)
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[5:25] <ball> Woohoo! I bought a new SDHC card!
[5:25] * tommy`` (~UPP@host99-231-dynamic.50-79-r.retail.telecomitalia.it) Quit (Ping timeout: 248 seconds)
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[5:27] <norlevo> congrats
[5:27] * Case77 (~Case77@pool-108-44-26-19.albyny.east.verizon.net) has left #raspberrypi
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[5:31] <ball> Thanks. Now I just have to find an adaptor that can write to it. ;-)
[5:33] * djk (~Thunderbi@pool-96-242-33-206.nwrknj.fios.verizon.net) Quit (Quit: djk)
[5:35] <ball> ...also my NiMH charger.
[5:36] * ball (~ball@99-60-12-181.lightspeed.cicril.sbcglobal.net) has left #raspberrypi
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[12:05] <Shappy> Hello! I installed Ubuntu Mate 16.04 on a Pi3 not long ago and today I wanted to play with the PIN because why not.
[12:06] <Shappy> I tried to PWM the only PWM pin and every time I try it the Pi board freezes. Bare minim that causes it: https://pastebin.com/XEuXv9zG (using wiringpi2, Python 3)
[12:06] <Shappy> I have no idea what I'm doing so it's entirely possible I did some booboo. What exactly is happening? Nothing is connected to any of the pins.
[12:08] <Shappy> Or am I missing some libraries or something? I instally python-dev (apt) and wiringpi (pip)
[12:09] <Shappy> Unfortunately I do not have another SD card to try it on a different OS :)
[12:09] <Shappy> :(*
[12:14] <Shappy> 5a7ddfce
[12:14] <Shappy> fiajah
[12:14] <Shappy> Oh sorry, I put the board on my keyboard :D
[12:18] <Shappy> So I checked more closely and it seems the board doesn't entirely freeze. It's just that most of the peripherals cease to function (I guess).
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[12:19] * WLL (~WLL@unaffiliated/wll) Quit (Quit: My MacBook has gone to sleep. ZZZzzz…)
[12:19] <Shappy> The monitor still updates but no mouse/keyboard input, no networking (not even ping), the OS GUI flickers slightly. It's like most of the drivers crashed or the memory got corrupted.
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[12:31] <gordonDrogon> Shappy, are you running with sudo ?
[12:31] <gordonDrogon> because you can only use hardware PWM with sudo.
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[12:34] <Shappy> gordonDrogon, no I didn't but it should not cause a meltdown I think
[12:34] <gordonDrogon> it will. I know.
[12:35] * uppercase (~textual@cm-84.208.80.152.getinternet.no) has joined #raspberrypi
[12:35] <uppercase> Cross-post from #linux: I'd like to mount a bind mount on e.g. /sys/class/gpio on a kernel that doesn't have gpiolib support. Since sysfs is not a normal filesystem, the mount command can't just create the folder "gpio". Is there any smart way of getting the same result?
[12:36] <uppercase> I want some GPIO writes to work (just writing 1/0 to regular files), even if they aren't propagated to real GPIO's
[12:36] <Shappy> Update: I tried RPi.GPIO instead of wiringpi and it actually works as expected
[12:36] <Shappy> Strange
[12:36] <gordonDrogon> I wrote wiringPi.
[12:37] <Shappy> gordonDrogon, could it be some incompatibility?
[12:37] <gordonDrogon> but do check RPi.GPIO - it may be running as root for you, or be using a software pwm.
[12:37] <Shappy> How do I check if it's software pwm?
[12:38] <gordonDrogon> you need to be root to fiddle iwth the PWM clock registers. if not, then /dev/gpiomem seems to noodle some random clock registers.
[12:38] <gordonDrogon> I've no idea - I don't use python.
[12:38] <Shappy> Oh ok
[12:38] <gordonDrogon> wiringPi is a C library for C/C++ and RTB BASIC programs.
[12:38] <gordonDrogon> Others have ported it to other language, etc. you need to consult with them.
[12:39] <gordonDrogon> arguably, if you're using Python, then GPIO Zero ought to be what you're using on the Pi...
[12:39] <gordonDrogon> at least, that's what the foundation are supporting now.
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[12:57] <Shappy> It definitely used software GPIO beause I connected a motor and it gave that unstable, high-pitched noise. I tried out pigpio and that was I could set up a working real hardware PWM
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[13:12] <gordonDrogon> GPIO Zero uses pigpio under the bonnet IIRC.
[13:12] <gordonDrogon> (which runs as a root daemon)
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[15:02] <zenmar_> Hi, quick question: just got my first raspberry pi (3 model b), I read somewhere that it required a class 4 micro SD (or at least for earlier versions of the pi) - is that still the case/tru e?
[15:02] <zenmar_> Or do higher classes cause no issue?
[15:03] * MrCrackPotBuilde (~I@161.142.36.131) Quit (Read error: Connection reset by peer)
[15:04] <Habbie> zenmar_, higher is always fine
[15:04] <shauno> I think all of mine are class10. but there's always ye giant list 'o compatibility at https://elinux.org/RPi_SD_cards
[15:05] <zenmar_> Perfect, thanks guys :)
[15:08] * MrCrackPotBuilde (~I@161.142.100.131) has joined #raspberrypi
[15:08] <MrCrackPotBuilde> if i have 4 dc motors and 6 servos can i command the servos individually and have the speed control all four motors
[15:09] <Habbie> MrCrackPotBuilde, if i have to guess, you'll need some expansion board to do all that
[15:09] * zenmar_ (c065b0fe@gateway/web/freenode/ip.192.101.176.254) Quit (Quit: Page closed)
[15:11] <MrCrackPotBuilde> i wouldnt have thought so
[15:12] <MrCrackPotBuilde> as the servo can be controlled using PWM but the esc was thinking gpio pins
[15:12] <Habbie> pi does not have a lot of hardware pwm
[15:12] <Habbie> there are some non-pwm pins that can somewhat fake it
[15:12] * immibis (~chatzilla@122-59-200-50.jetstream.xtra.co.nz) Quit (Ping timeout: 255 seconds)
[15:12] <Habbie> or you can do it in software
[15:12] <Habbie> but it might be unreliable
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[15:15] <reds> okaay, ~20h delay and no answer to my previous question, purrfect..
[15:16] <Habbie> reds, you can get your money back at the counter
[15:16] <reds> I'm getting "ERROR: mmal not found" while compiling ffmpeg using ./rebuild from mpv's repo, just as written in https://nwgat.ninja/quick-easy-compiling-mpv-for-raspberry-pi/
[15:16] <reds> Habbie: heh
[15:17] <reds> Habbie: i was thinking about it more like "hmm, it's okay to post next question as the previous one won't get a response" than "hurr durr respond"
[15:17] <Habbie> ah
[15:17] <Habbie> yes after a few hours nobody is going to see it anyway
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[17:01] <samtunez> Hello, Sorry that I post here, but I just can't get the wlan with the Raspberry Pi 3 to work. I added the config (ssid and psk) to wpa_config, but that does not work as it seems
[17:02] * alphawarrior (~alphawarr@ec2-54-86-37-36.compute-1.amazonaws.com) has joined #raspberrypi
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[17:05] <AntiComposite> Did you use wpa_passphrase?
[17:08] * ShorTie wonders how he added it
[17:08] * Rickta59 (~kimballr@unaffiliated/rickta59) has joined #raspberrypi
[17:10] <AntiComposite> samtunez, What config file, exactly, did you add the config to, and did you do it with wpa_passphrase or manually?
[17:17] * uppercase (~textual@cm-84.208.80.152.getinternet.no) Quit (Quit: My MacBook has gone to sleep. ZZZzzz…)
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[18:00] * ali1234 (~ali1234@2a01:4f8:162:4348::2) Quit (Ping timeout: 256 seconds)
[18:00] <useretail> Hi, I have three RPi 2 Model B v1.1. I'd like to stack them with M2.5 brass spacers. What's optimal spacer length should fit, if I don't want any acrylic/plastic layers? This is what I want: https://blog.hypriot.com/images/picocluster-kits/picocluster-5node-pi-tower.jpg
[18:01] * mine9 (~mine9@c-24-22-38-85.hsd1.or.comcast.net) Quit (Quit: Textual IRC Client: www.textualapp.com)
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[18:04] <H4ndy> useretail: anything higher than the LAN port
[18:06] <useretail> H4ndy: yeah, usb is ~2mm higher
[18:06] <useretail> maybe someone already did something similar
[18:06] <kessius> hi group, Someone here knows which circuit integrated i2c for inverter dc-ac
[18:06] <H4ndy> I dont really understand the question, you just measure the tallest part on the board and that your spacer length plus some leeway
[18:09] <useretail> 20mm shouldn't be too high?
[18:09] <useretail> i'm just not sure that's why i'm asking
[18:09] * pavlushka (~pavlushka@ubuntu/member/pavlushka) has joined #raspberrypi
[18:12] * Lownin (~Lownin@107.189.52.139) has joined #raspberrypi
[18:13] <kessius> group, my source have input 12volts d.c and output 12volts a.c
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[18:15] * ManTK (~mantk@unaffiliated/mantk) Quit (Quit: ZNC - http://znc.in)
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[18:17] <kessius> anybody know c.i inverter dc-ac
[18:18] * Dragon092 (~Dragon@2001:4ba0:ffa4:298::) has joined #raspberrypi
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[18:23] * sir_galahad_ad is now known as sir_galacorpse_a
[18:23] * sir_galacorpse_a is now known as sir_galahad_ad
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[18:32] <kessius> hi raspberry, Someone here knows which circuit integrated i2c inverter dc-12volts-battery for output 12volts A.c
[18:33] * redrum88 (~Helder@187.23.80.112) Quit (Client Quit)
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[20:41] <Ubuntivity> Hello. I have a code that uses certain GPIO pins as output. Can I simply use GPIO.cleanup() to turn all of them off? instead of looping on each one and setting it to GPIO.LOW ?
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[21:42] <IanTLopp> anyone know how to test the quality of a raspberry pi 3 processor? I've got 3 and I'm wanting to find which one can be overclocked the most.
[21:42] <IanTLopp> I got a flirc aluminum case for it and wish to have it be my emulation console.
[21:44] <H4ndy> the problem is usually not the CPU but the SD card which gets fried
[21:44] <IanTLopp> by overclocking?
[21:44] <H4ndy> because the clock of the SD card slot is increased together with the CPU
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[21:46] <IanTLopp> huh... that's weird.
[21:49] <H4ndy> its a limitation of the chip design
[21:49] <IanTLopp> I was watching a youtube channel talking about overclocking a raspberry pi and the guy was talking about the grades of processors, mentioning between grade A, B, C, and D, and he said that typically raspberry pi's are made with grade D processors, but sometimes the processor manufacturers will sell higher grade processors at a reduced price to get rid of extra stock, so sometimes RPi's have stronger chips.
[21:49] <H4ndy> you could use network boot as a workaround
[21:49] <IanTLopp> so he was mentioning overclocking to 1.3, 1.35, 1.4 and even 1.5 for some people.
[21:49] <IanTLopp> or boot off usb... at least the roms.
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[21:50] <H4ndy> which still requires a SD card afaik
[21:50] <H4ndy> to get boot the binary blob which then boots the system from USB
[21:50] <IanTLopp> H4ndy: umm... you can't boot off of USB?
[21:50] <H4ndy> you can, but still need bare firmware on SD for initializsation
[21:50] <IanTLopp> oh, so there's kind of a software bios that tells the rpi to boot off usb, but that "software bios" (bad term, I know), has to run off the sd card?
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[21:50] <IanTLopp> got cha
[21:50] <H4ndy> yes
[21:51] <IanTLopp> so... is there a way to do so off of the network without using SD?
[21:51] <H4ndy> the VideoCore CPU is really weird in some aspects
[21:51] <H4ndy> yes, the raspberry pi 3 has native network boot AFAIK
[21:51] <IanTLopp> that's odd.
[21:51] <H4ndy> https://www.raspberrypi.org/documentation/hardware/raspberrypi/bootmodes/msd.md
[21:51] <IanTLopp> that also seems like it might be unconscionably slow.
[21:51] <IanTLopp> by compariso .
[21:51] <H4ndy> seems like the Pi3 can be setup to boot directly from USB after initial setup
[21:53] <IanTLopp> H4ndy, nifty... okay... it's still slower that way, but meh...
[21:53] <IanTLopp> are there good SD cards that won't suffer from burning up by overclocking?
[21:53] <H4ndy> why slower?
[21:53] <H4ndy> USB is faster than the SD slot
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[21:54] <H4ndy> high quality SD cards usually work fine, mostly Samsung
[21:54] <IanTLopp> wait... I thought it was the other way around... hmm.
[21:54] <MTecknology> Is it generally safe to do a dist-upgrade of a pi from raspian 8 to 9, or is it a situation where I would be much better served starting from scratch?
[21:55] <IanTLopp> well the uSD card I have in it is a Sandisk Ultra Plus
[21:55] <IanTLopp> 128GB
[21:55] <H4ndy> https://elinux.org/RPi_SD_cards
[21:55] <H4ndy> https://www.pidramble.com/wiki/benchmarks/microsd-cards
[21:55] <H4ndy> MTecknology: its as safe as regular debian
[21:56] <H4ndy> MTecknology: so if you do not have some fancy packages or custom kernels and stuff it should work fine
[21:56] <MTecknology> woohoo!
[21:56] <MTecknology> thanks for the good news :)
[21:56] <H4ndy> IanTLopp: all that info about SD cards is widely available via google, please read up yourself a bit
[21:56] <IanTLopp> H4ndy, gotcha...
[21:57] <H4ndy> IanTLopp: same with overclocking, there is a lot of info out there already, together with benchmarks and heat stuff
[21:57] <IanTLopp> but I haven't found any info relating to the quality of the processor..
[21:57] <H4ndy> because noone has tested that
[21:58] <H4ndy> noone will buy hundrets of pis and benchmark them for some single digit performance gain
[21:58] <IanTLopp> just people mentioning on youtube that some can be overclocked more... I wonder how much is actually known about processor quality, or if most of what that guy said was conjecture and surmise.
[21:58] <H4ndy> thats the usualy thing with every processor, no matter if CPU or GPU
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[21:59] <H4ndy> some have slight impurities in the silicone which does not affect regular usage but only occurs when driven outside the specs
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[22:00] <H4ndy> The Pi3 is already running pretty near of the limits of the broadcom chip by default so overclocking is a bit harder than with the old slower pis
[22:00] <IanTLopp> 'k... guess I'm just going to have to start overclocking my 3's and see which one runs stable at the highest multiplier, then install that in the flirc.
[22:00] <H4ndy> correct
[22:00] <IanTLopp> oh well.. thought maybe there was a faster/better way...
[22:00] <IanTLopp> no worries though.
[22:01] <H4ndy> there is no marking on the CPU as every one that is on a Pi passed QC for the intended specs
[22:01] <IanTLopp> okay.
[22:01] <IanTLopp> I'm not worried about that, nor do I mean to besmirch the name of raspberry pi at all.. just that IF I have one that can be FORCED to run faster, I'll feel lucky/privileged, and have fun with it.
[22:03] <MTecknology> I tend to prefer running things ~15% under their intended max, but I also *HATE* replacing hardware.
[22:05] <IanTLopp> MTecknology, understandable, just wanting to have some fun with the beast.
[22:05] <IanTLopp> I've got 3 of the pi3s and want to see which one I can push the hardest.
[22:05] <H4ndy> the pi is very solid and can take a lot of beatings
[22:05] <IanTLopp> it's all in the name of science :)_
[22:06] <IanTLopp> also need to order a bunch of pi zero w bundles.
[22:07] * MTecknology pi -> https://i.imgur.com/3cXQIuY.jpg
[22:08] <IanTLopp> ERR... gotta go for now... talk to you guys later
[22:08] <IanTLopp> sudden psuedo emergency
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[23:13] <H4ndy> MTecknology: PoE splitter? neat
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[23:14] <MTecknology> makes me wanna show off the whole setup.. https://imgur.com/a/fjdoE
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[23:38] <spacerabbit> do you have sensors to detect water leaks for the sump pump
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[23:47] <MTecknology> not yet, but I plan to
[23:48] <MTecknology> I have a newer/stronger/better sump pump that runs off that inverter (very effeciently too), and a main sump pump that was originally hear when I moved in. I feel pretty safe there.
[23:48] <MTecknology> I'm more concerned about building something that can turn the water main on/off in the event water is detected.
[23:52] <MTecknology> I'd also like a heat sensor
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