#raspberrypi IRC Log

Index

IRC Log for 2018-07-13

Timestamps are in GMT/BST.

[0:01] <erm3nda> can you poing me to the line saying you need to?
[0:01] * chris_99 (uid26561@gateway/web/irccloud.com/x-shzvnbsjbubntlfe) Quit ()
[0:02] <{HD}> "If you're connected to the Pi via WiFi, connect via ethernet/serial/keyboard first"
[0:02] <{HD}> just after "CONFIGURE YOUR INTERFACES"
[0:05] * mjones (uid180508@gateway/web/irccloud.com/x-fwrcebnvgsserrut) Quit (Quit: Connection closed for inactivity)
[0:07] * tuxiano (~tuxiano@2a02:8070:89d4:aa00:a8b4:f2b7:3a5d:80ed) Quit (Quit: tuxiano)
[0:08] <erm3nda> humm, that may be because everything is made step by step
[0:09] <erm3nda> create_ap does all for you, so it's a 1/2 step
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[0:14] <{HD}> why doesn't this work?
[0:14] <{HD}> http://dpaste.com/0JV47W8
[0:15] * redstarcomrade (~quassel@cpe-104-175-255-182.socal.res.rr.com) Quit (Read error: Connection reset by peer)
[0:18] * minionofgozer (~minionofg@136.62.5.236) Quit (Quit: terminated!)
[0:18] <erm3nda> i do bet for the non-spaces you have inside the if [thing]
[0:18] <erm3nda> as far as i remember bash if needs [ space ]
[0:18] * clemens3 (~clemens@80-218-38-71.dclient.hispeed.ch) Quit (Ping timeout: 256 seconds)
[0:20] <erm3nda> http://dpaste.com/0J4GN4M
[0:21] * sigsts (~sigsts@unaffiliated/skyroverr) Quit (Ping timeout: 265 seconds)
[0:22] <{HD}> Hum. that is not working either. I am getting a "not found"...
[0:23] <erm3nda> what not found?
[0:23] <erm3nda> the command?
[0:24] <{HD}> I have no idea. It just started being wonky. it says 1 as in line 1? #!/bin/bash?
[0:24] <erm3nda> im not sure of what you said
[0:25] * davr0s (~textual@host81-155-68-221.range81-155.btcentralplus.com) Quit (Quit: My MacBook Pro has gone to sleep. ZZZzzz…)
[0:25] <erm3nda> says "1 as in line 1? #!/bin/bash?"
[0:25] <{HD}> yea, line 1 command not found?
[0:25] <{HD}> anyway I rm'ed that and just typed it again
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[0:26] <{HD}> now "done" unexpected.
[0:26] <{HD}> bash is lame
[0:26] <erm3nda> oh, is trying to run 1 as a command. 1 is what it get from the gpio command
[0:26] <erm3nda> wait
[0:27] <{HD}> I am waiting. I put some things in "s btw
[0:28] <erm3nda> also, for your knowledge, when you run a command, 0 and 1 are interpreted as true false
[0:28] <erm3nda> you dont really need to use == 0
[0:28] <ali1234> you should use gpio's wait mode
[0:29] <{HD}> http://dpaste.com/2GGTWBK
[0:30] <{HD}> OH! while [ 1 ]
[0:30] <ali1234> while true
[0:31] <erm3nda> you can use while true
[0:31] <erm3nda> {HD}, im sorry i didnt look properly, i didn't saw that
[0:31] * ntqz (~ntqz@71-38-57-171.lsv2.qwest.net) has joined #raspberrypi
[0:32] <ali1234> try this http://dpaste.com/0XFSYCV
[0:33] <ali1234> i dunno if it will work. depends what gpio returns and how
[0:33] <ali1234> i dont have it available to test
[0:34] <{HD}> well it runs but my button isn't responding yet.
[0:34] * r0Oter is now known as r00ter
[0:34] <{HD}> I have the button set "gpio -g mode 17 input"
[0:34] <{HD}> "gpio -g mode 17 up"
[0:35] <erm3nda> so, when you press button that command gets 1
[0:36] <{HD}> erm3nda: will I am using internal pullup so when I press the button I should get a 0
[0:36] <ali1234> while gpio -g wfi 17 rising; do echo "button pressed"; sleep 0.2; done
[0:36] <erm3nda> ok
[0:36] <ali1234> that's what i use more or less
[0:36] <{HD}> ali1234: But I need to check the state of 5 buttons
[0:37] <ali1234> no problem, just start 5 processes
[0:37] * InverseRhombus (~InverseRh@90.252.20.131) Quit (Ping timeout: 240 seconds)
[0:37] <{HD}> the issue must be in the if
[0:37] <ali1234> if you are trying to emulate a keypad or something, then don't do it with shellscript
[0:38] <{HD}> ali1234: No, I only have 5 butttons. They will each breakout and run their own script.
[0:38] <{HD}> then come back to the main while loop
[0:38] <ali1234> then https://github.com/ali1234/systemd-gpio will make it super easy for you
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[0:46] <{HD}> So, bash does some funky stuff. I don't like it.
[0:47] <Khaytsus> eh? compared to what?
[0:47] <ali1234> very few people like bash
[0:47] <ali1234> as a scripting language
[0:47] <Khaytsus> oh, I don't write bash scripts, I write sh scripts
[0:48] <Khaytsus> and that's only for one offs, or something simple
[0:48] <ali1234> sh is at least widely compatible
[0:49] <ali1234> there is a nice python module called sh which lets you write shell scripts in python
[0:49] <Khaytsus> gross
[0:49] <ali1234> you can also embed python scripts into shell scripts, similar to how its done with awk, except without having to learn awk
[0:54] <Khaytsus> I am bad about using ((var++)) for variable incrementing though.. I really shouldn't
[0:55] <erm3nda> Khaytsus, most of people would not even know that bash and sh are not the same thing
[0:55] <erm3nda> bash has some good thing too, like extglob
[0:56] <erm3nda> python rocks compared to anything
[0:56] <Khaytsus> erm3nda: some people think bash is the linux command line
[0:57] <erm3nda> its a shell :-)
[0:57] <erm3nda> so, they mix bash with terminal
[0:58] <Khaytsus> like if you asked 10 unewbtoo users to name 3 shells they probably would only say "bash" and maybe the 'advanced' users might say "dash"
[0:59] <erm3nda> mmm i dont know that much too... zsh, dash, bash, sh ...
[0:59] <erm3nda> sure there are many more
[0:59] <erm3nda> btw, i only care bash
[0:59] <{HD}> I don't currecntly script anything. I write c and c++ and thats about it. I guess I should take the time to learn something...
[0:59] <erm3nda> even if i don't like bash scripting. not friendly for me
[0:59] <tobiasBora> Is it possible to see if the cpu frequency is fixed or dynamic? Because I use to have "enable_uart=1" that fixes the cpu frequency on my rasp 3 B+, (I think), and now I'd like to check if without this the frequency is still fixed to 250MHz
[1:00] * Toadisattva (~Toadisatt@gateway/tor-sasl/toadisattva) Quit (Quit: Leaving)
[1:00] <Khaytsus> I started on csh in the late 80s, mainly used tcsh in Linux until about 4 years ago when I wanted to try something more modern so I hunted around and wound up with zsh
[1:00] <{HD}> So, what are my options? js, ruby, python? any others?
[1:01] <erm3nda> {HD}, all that dependes on your needs
[1:01] <Khaytsus> {HD}: There are more than anyone here could name. Tool for the job.
[1:01] <erm3nda> what do you wanna do with your coding?
[1:01] <erm3nda> Khaytsus, yes
[1:01] <{HD}> I want to do simply fast and very compatible between systems.
[1:01] <{HD}> If I am doing anything else I will write up something in c or c++
[1:02] <erm3nda> tobiasBora, vcgencmd measure_clock arm
[1:02] <erm3nda> google things before come here
[1:02] <ali1234> https://www.tiobe.com/tiobe-index/
[1:02] <Khaytsus> I personally do sh for quick one off small scripts.. and perl for pretty much anything else
[1:02] <erm3nda> keep in mind that's hertz, you need to divide till you get Mhz
[1:02] <tobiasBora> erm3nda: I already use vcgencmd. But I get 250MHz, and I don't know how to make sure that the rasp could go over this when needed.
[1:03] <erm3nda> I like Python because is really easy to learn from
[1:03] <erm3nda> and readabity cunts
[1:03] <erm3nda> readability
[1:03] <{HD}> um...
[1:03] <Khaytsus> ...cunts?
[1:03] <{HD}> lol
[1:03] <Zardoz> rude :P
[1:03] <erm3nda> tobiasBora, launch some stress command then check at same time
[1:03] <{HD}> wow python is #4 on that list
[1:03] <Khaytsus> I figured you meant counts, but maybe not? Hahhaha
[1:04] <erm3nda> yes i meant counts, but wrote cunts
[1:04] <Khaytsus> hahaahahaaha
[1:04] <ali1234> python developers are really aggressive about code standards
[1:04] <erm3nda> Khaytsus, lol, i saw "cunt" right now
[1:04] <tobiasBora> erm3nda: ok. I was just trying to see if "proper" method exists. Also what's the difference between vcgencmd measure_clock core
[1:04] <tobiasBora> and ... arm?
[1:05] <{HD}> Well, I follow current code standards so, good.
[1:05] <ali1234> tobiasBora: the chip has many clocks
[1:05] <{HD}> alright I am going to try a quick python script.
[1:05] <Khaytsus> Python devs are probably big on code standards because if you screw it up you get 50 pages of backtrace that's impossible to follow ;)
[1:05] <tobiasBora> ali1234: sure, but if "core" is not the main cpu, what does it refers to?
[1:06] <ali1234> the core clock that all the others are derived from?
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[1:06] <erm3nda> Khaytsus, python has many kinds of devs, from expertd to dumb people because it's easy
[1:06] * graphene (~graphene@46.101.134.251) Quit (Read error: Connection reset by peer)
[1:06] <Khaytsus> erm3nda: I realize this
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[1:07] <Khaytsus> and python has a gadzillion libraries to use
[1:07] <erm3nda> only experts does know and use backtrace for debug
[1:07] <erm3nda> same has happend to nodejs
[1:07] <erm3nda> now as a nice ecosystem of libs
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[1:07] <Khaytsus> Anything that can be written will eventually be written in JS.
[1:08] <erm3nda> i don't know JS to be fair. I can work with it, but i don't really have any background
[1:08] <ali1234> it's like python if python was written by the php developers
[1:08] <Khaytsus> I've only done JS for stuff in browsers.. never outside
[1:08] <tobiasBora> ali1234: ok thanks
[1:08] <erm3nda> nodejs changes that
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[2:15] <{HD}> What gpio mode can I put a pin in to simulate it not being connected to anything?
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[2:54] <erm3nda> {HD}, not really understanding that question
[2:56] <erm3nda> do you can elaborate the question, rephrase or make an example of it?
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[2:57] * NERD-k (~NERD@97.64.18.96.16clouds.com) has joined #raspberrypi
[2:58] <{HD}> I am using a raspi0w as an isp_programmer. And after I program the chip I want to keep the isp header hooked up and powered on. But, because I am using the chips isp pins for other things I cannot test it because it is registering the raspi0w. So, I have to unplug the isp header, externally power the device and test it. Then plug it back in if I need to program again.
[2:58] <NERD-k> How can I use `camera.capture_continuous(stream, format='jpeg')`? Process every picture in stream.
[2:59] <{HD}> So, I want to set a pinmode on the isp pins that is super high impedance as if it were not even connected.
[2:59] <NERD-k> Use python3
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[3:11] <erm3nda> {HD}, lol, nevermind
[3:11] <erm3nda> NERD-k, you've storing it at stream object. You can iterate it
[3:12] <{HD}> ¯\_(ツ)_/¯
[3:12] <erm3nda> For frame in camera.capture_continuous(stream, format='jpeg'):
[3:12] <erm3nda> so, each frame it's an image object
[3:12] <erm3nda> the image is taken as frame.array
[3:12] <erm3nda> take a loot at this post camera.capture_continuous(stream, format='jpeg')
[3:12] <erm3nda> lol
[3:12] <erm3nda> https://www.pyimagesearch.com/2015/03/30/accessing-the-raspberry-pi-camera-with-opencv-and-python/
[3:13] <erm3nda> i found it many time ago, it's a wonderfull post
[3:13] <erm3nda> long time ago :D
[3:13] <erm3nda> wonderful ?
[3:13] <erm3nda> {HD}, let's see docs
[3:15] <{HD}> So there is input, output and pwm? With up down and tri?
[3:16] <erm3nda> and SPI too
[3:17] <erm3nda> but seemed you never look docs before touch :-P
[3:17] <erm3nda> SPI
[3:17] <erm3nda> SPI0: MOSI (GPIO10); MISO (GPIO9); SCLK (GPIO11); CE0 (GPIO8), CE1 (GPIO7)
[3:17] <erm3nda> SPI1: MOSI (GPIO20); MISO (GPIO19); SCLK (GPIO21); CE0 (GPIO18); CE1 (GPIO17); CE2 (GPIO16)
[3:17] <NERD-k> erm3nda, Emmm, `for foo in camera.capture_continuous(stream, format='jpeg'):` I used like this, Iamge-process used 0.02s, but it use `for` again may use 0.9s, it's too long!
[3:19] <NERD-k> I want to now how can I use stream to get every one picture just in `for loop`.
[3:20] * raulp (~textual@unaffiliated/raulp) Quit (Quit: raulp)
[3:20] <erm3nda> NERD-k, what you need to do with those images?
[3:20] <erm3nda> processing image is better with threading if you want something like "real time"
[3:21] <erm3nda> if you're doing image processing you may want to use opencv for it
[3:21] <erm3nda> so, what you doing with your images?
[3:23] <NERD-k> erm3nda, I need to find red light in every picture, and some else.
[3:24] <erm3nda> how it is you triying to find that light?
[3:24] <erm3nda> opencv is the tool for that, so the python uses the c++ bindings of opencv which is FASTER than anything else you can use to process images
[3:26] <NERD-k> stream = BytesIO(), image.split(), Contour recognition,
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[3:27] <NERD-k> OpenCv isnot supported Python3...I want to use Python3.
[3:28] <erm3nda> who said you that opencv doesn't work with py3?
[3:29] <NERD-k> `sudo apt search OpenCv` just return `python-opencv`
[3:30] <NERD-k> You mean make OpenCv
[3:30] <NERD-k> ?
[3:30] <NERD-k> ?
[3:30] <erm3nda> well, i forget we are in raspberry channel
[3:30] <erm3nda> but you should use * when searching things
[3:31] <erm3nda> apt search opencv*
[3:31] <erm3nda> i know opencv3 works with python 3.5+ but i never tried in rpi
[3:32] <NERD-k> It 蚕农图
[3:33] <NERD-k> It cannot be acquired in RPi
[3:33] <erm3nda> maybe you can make it
[3:34] <erm3nda> https://stackoverflow.com/questions/36201282/install-opencv-for-python3
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[3:38] <NERD-k> https://www.pyimagesearch.com/2016/04/18/install-guide-raspberry-pi-3-raspbian-jessie-opencv-3/
[3:38] <NERD-k> this have many work to do.
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[3:43] <{HD}> Do you think a high from 1 rpi gpio pin can saturate 4 transistors?
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[3:45] <erm3nda> NERD-k, at least is well documented. But in short, is compiling from source.
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[3:46] <erm3nda> {HD}, i have no idea. First, you need to know how much does the gpio output. Second, that depends on which transistors are you using. Third, how it is you connecting 4 transistors to single gpio?
[3:46] <erm3nda> at time?
[3:47] <erm3nda> you need to look both gpio and transistor datasheet to see if you can operate those 4 at once with single GPIO output.
[3:50] * keyofnight (~key@li335-10.members.linode.com) has joined #raspberrypi
[3:50] <keyofnight> Hey folks!
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[3:54] <keyofnight> I was hoping someone here could help me make a decision about batteries for a portable pi workshop build I'm working on.
[3:55] <keyofnight> In particular, is it okay to use naked 18650s Li-Ion batteries with Adafruit's Powerboost 1000c?
[3:56] <keyofnight> (I was reading the specs for the switch and the battery management ICs used on it, and they seem to have all of the relevant protections...
[3:56] <keyofnight> ...but I wonder if I should just take a better-safe-than sorry approach.)
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[4:15] <{HD}> Ok I just decided there must be a mode where the gpio can be set and the buttons on spi will still work.
[4:19] * s8548a (~s8548a@unaffiliated/s8548a) has joined #raspberrypi
[4:26] <ground> keyofnight: That looks like it will do fine with unprotected 1650 batteries. Just make sure you only connect one cell at a time. I suggest you do not wire multiple cells to increase runtime.
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[4:27] <Khaytsus> You'll murder an unprotected 18650 if you're not careful
[4:27] <ground> And maybe your entire house with it.
[4:27] <keyofnight> ground: hahah... that's no good then. I have a battery case I was planning to put 4 18650s... in parallel.
[4:28] <keyofnight> I really don't want to burn my house down.
[4:28] <ground> I wouldn't personally do that.
[4:28] * mike_t (~mike_t@pluto.dd.vaz.ru) has joined #raspberrypi
[4:28] <keyofnight> I'm just gonna get a 10000mAh lipo then.
[4:28] <ground> I use a miller ml102 to power my PI in the field with no problems at all but I don't charge with it.
[4:30] <keyofnight> Yeah, I want this whole thing to be relatively effortless to use. I don't want to have to be careful.
[4:31] <keyofnight> What do you use your PI for in the field?
[4:31] <ground> Are you wanting to keep it on charge and run as a UPS or just run it off batteries?
[4:32] <ground> Reprogramming 2-way radios.
[4:32] <keyofnight> Wow. Really cool.
[4:32] <ground> And something ircing :)
[4:32] <ground> er sometimes.
[4:32] <keyofnight> ;)
[4:32] <Khaytsus> If only they made computers with built-in keyboards and displays
[4:33] <keyofnight> Yeah, yeah. ;)
[4:33] <keyofnight> You say that, Khaytsus, but wait until you see this build.
[4:33] <Khaytsus> It's gon' be janky sorry
[4:34] <Khaytsus> I like pi's but...
[4:34] <ground> Pine is making that pinebook but I've had nothing but trouble with their boards so YMMV.
[4:34] <keyofnight> It'll be a little janky, but that's the point.
[4:34] <Khaytsus> If I'm doing something important with mine, I prefer not janky
[4:34] * p71 (~chatzilla@68-187-65-81.dhcp.ftwo.tx.charter.com) Quit (Ping timeout: 268 seconds)
[4:35] <keyofnight> So, I do have a laptop, but I don't really have a setup for messing around with project builds.
[4:35] <Khaytsus> So what radios?
[4:35] <keyofnight> So I'm building a portable one, with this tiny little mechanical keyboard.
[4:36] <ground> Just yeah be super careful with LION batteries. Learned most of what I know from drone guys and now I'm paranoid to charge my laptop unattended. you're one IC failure from a huge disaster.
[4:36] <keyofnight> ahaha
[4:36] <Khaytsus> With some teeny tiny screen? Using your phone for data, or a usb stick?
[4:36] <ground> Mostly baofeng, wouxun, and md380
[4:36] <Khaytsus> Oh, so chirp?
[4:37] <ground> Yep
[4:37] <keyofnight> awesome.
[4:37] <keyofnight> Khaytsus: yeah... a 5".
[4:37] <ground> The CW output on the MD380 alt firmware is super cool.
[4:37] <ground> You can use the radio without using the display at all.
[4:38] <Khaytsus> That sounds as useful as a binary watchface
[4:38] <Khaytsus> Cute, but meh
[4:38] <{HD}> gpio reset is depreached =(
[4:38] <keyofnight> ...it'll be useful. I can think of dozens of situations where I wish I had this thing.
[4:38] <ground> Yeah true enough but if you can't see the display at all it is super useful.
[4:39] <Khaytsus> ground: I guess it doesn't have the halarious voice that other chiacoms do?
[4:39] <Khaytsus> WON. TOO. TLREE. FO
[4:39] <ground> Nope. Not enough room in the flash for TTS or samples.
[4:39] <keyofnight> For example, I'm a grad student... and I study ethics at a neural engineering center. I've had to give neuroscience / engineering demos and talk ethics.
[4:41] <Khaytsus> There's a DMR repeater near me but so far I have no interest in gambling in the "which digital standard will win" game.. but pretty sure DMR will
[4:41] <keyofnight> Last time I ran a demo for some wealthy people, and it was this EMG (muscle electrode) controlled robot. The demo they gave me was pretty annoying. The power brick kept falling asleep, the leads kept coming disconnected, and I didn't have a reliable way to show people their EMG signals.
[4:41] <keyofnight> If I had this portable workstation, it would've been really easy. :)
[4:42] <keyofnight> A lot of the projects in my labs run on pi and beaglebone, and people are always looking for convenient ways to use pi.
[4:42] <keyofnight> This would be perfect.
[4:42] * Rekonnected (~Rekonnect@76.255.220.72) Quit (Ping timeout: 240 seconds)
[4:43] <ground> Well DMR is the cheapest way to get in the game. I don't think any std will "win". P25 and DMR are fully entrenched everything else I personally discounted.
[4:43] * Rekonnected (~Rekonnect@76.255.220.72) has joined #raspberrypi
[4:43] <Khaytsus> ground: I'm talking ham radio, you might be commercial
[4:44] <ground> And the RPI can decode P25, d-star, dmr from the command line using rtl_fm and dsd.
[4:44] <ground> Then stream it to an icecast using ezstream.
[4:45] <keyofnight> That's cool.
[4:45] <ground> So if you wanted to monitor local repeaters in your area to get an idea of activity that might be an option.
[4:46] <Khaytsus> I do that.. but not on a pi, no
[4:48] <keyofnight> ground: what RTL hardware do you recommend?
[4:48] * malachi (~malconten@91.207.175.204) has joined #raspberrypi
[4:49] <ground> Another great ham radio app for the RPI is svxlink. Designed entire repeaters for the field using that, and RPI, rtl dongle, and a portable radio and the transmitter.
[4:49] <Khaytsus> I'd get a txco one for no drift.. might as well get an sdr blog v3 one if you're getting a cheap rtlsdr.
[4:49] <ground> Just rtl2832 as cheap as you can find it from a china seller on Ebay.
[4:50] <Khaytsus> Cheaper the one you get the worse the drift is.. which is pretty annoying to deal with as the temperature changes on it
[4:50] <Khaytsus> I used one for aprs for a while and i had to recalibrate it every 10 minutes
[4:50] <ground> You need to calibrate it with an LTE tower in your area once it warms up.
[4:50] <Khaytsus> It still varies.
[4:51] <Khaytsus> environment, sun, no sun, breeze... idle, not idle, etc
[4:51] <Khaytsus> and I personally used noaa... kalibrate or whatever it is never worked for me
[4:52] <Khaytsus> rtl_power and a perl script to find the peak.. pretty fast and worked a treat
[4:52] <ground> I use https://github.com/JiaoXianjun/LTE-Cell-Scanner to calibrate.
[4:53] <ground> But yes, there is drift on the cheaper ones I've had.
[4:54] * NERD-k (~NERD@97.64.18.96.16clouds.com) Quit (Ping timeout: 240 seconds)
[4:54] <Khaytsus> All 3 of mine drift pretty bad... I have one wrapped in aluminum foil in a metal box with some shielding to block some rfi and it gets pretty stable after some use... the one I used for aprs wasn't as insulated and drifted all over, causing lost decodes
[4:55] <ground> You using direwolf for aprs?
[4:55] <Khaytsus> yep
[4:55] <Khaytsus> Still do; but i use a HT now.. the sdr wasn't sensitive enough and overloaded pretty easy
[4:55] <ground> Good software, that. Need to get around to trying it on TX
[4:56] <Khaytsus> Yeah, this one broadcasts some becaons over RF but primarily it's an igate
[4:58] * sigsts (~sigsts@unaffiliated/skyroverr) Quit (Ping timeout: 256 seconds)
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[4:59] <keyofnight> All of this stuff is relatively new to me.
[4:59] <keyofnight> But I want to get into it.
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[5:03] <ground> Right on, just be careful with those battereies. Remember most solutions are designed to monitor one cell at a time. If you are using multiple cells and each aren't individually monitored it's probably not a good idea. Get a good charger that monitors the charge of each cell individually.
[5:05] * supajerm (supajerm@gateway/vpn/privateinternetaccess/supajerm) has joined #raspberrypi
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[5:08] <Khaytsus> I would personally use a protected cell or a circuit that does a similar job and has a cutoff voltage
[5:09] * Osirus126 (~quassel@24-138-154-156.eastlink.ca) has joined #raspberrypi
[5:10] <keyofnight> Yeah. I've got my eye on a lipo cell with a protection circuit.
[5:15] * sdothum_ (~znc@108.63.96.30) Quit (Ping timeout: 256 seconds)
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[5:22] <keyofnight> How are uxcell batteries?
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[6:02] * NowhereMan is now known as NowhereSJWMan
[6:04] <g0z> when i ssh into my pi and run irc it will print first screen of text but then it'll just print the last line of text and not scroll old text up, ive tried setting TERM to a bunch of types i know from traditional linux machines nothing helps. tips?
[6:05] * p71 (~chatzilla@68-187-65-81.dhcp.ftwo.tx.charter.com) has joined #raspberrypi
[6:08] * taza (~taza@unaffiliated/taza) Quit ()
[6:08] * bitmask (~bitmask@pool-100-35-64-150.nwrknj.fios.verizon.net) Quit (Quit: Gone to sleep...)
[6:09] <g0z> oh geeze i just tried ansi and that worked
[6:09] <g0z> nvmnd
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[8:02] <NERD-k> Somebody used picamera?
[8:03] <NERD-k> How long did `for foo in camera.capture_continuous(stream, format='jpeg'):` take once?
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[8:04] * Osirus126 (~quassel@24-138-154-156.eastlink.ca) has joined #raspberrypi
[8:05] <NERD-k> Docs said:`Alternatively, to capture JPEG frames as fast as possible into an in-memory stream, performing some processing on each stream until some condition is satisfied:`, but i print time that may take 0.9s once.
[8:06] * Pitel (~pitel@fw2o.masterinter.net) Quit (Quit: GTFO)
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[8:55] <thebigj> What are the possible ways to make GNU/Linux SD card read-only?
[8:55] <thebigj> GNU/Linux kernel is Hypriot version 1.3.0 (https://github.com/hypriot/image-builder-rpi/releases/download/v1.3.0/hypriotos-rpi-v1.3.0.img.zip)
[8:55] <thebigj> Root filesystem is BTRFS (It is acually creating a snapshot of root filesystem but I greped for 'mount' in rootfs but didn't found any trace.)
[8:55] <thebigj> Making SD card readonly is done with a reason to reduce the risk of SD card corruption.
[8:55] <thebigj> Somehow the person who coded this functionality isn't available
[8:55] <thebigj> From past few days I am trying to find an answer to this questions.
[8:55] <thebigj> I followed few blogs online of making SD card readonly for Raspberry PI but still not able to find that method implemented at our SD card code.
[8:55] <thebigj> Can anyone throw some hints and share their views on this? I feel completely lost now. Thanks!
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[8:59] <xacktm> thebigj: in general, there's a hardware lock on most sd cards that prevents writes; and you can change the mount options for a partition in /etc/fstab
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[9:01] <thebigj> xacktm: It isn't have any Hardware lock. It is small SD in size same we use in mobile phones
[9:01] <thebigj> xacktm: Can I share the /etc/fstab file output?
[9:03] <xacktm> thebigj: oh right I forgot about the small size lol - what do you mean share? /etc/fstab is just a file with a specific syntax
[9:04] <xacktm> .. with root permissions
[9:04] <xacktm> text file*
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[9:05] <Lartza> xacktm, I think they meant if it has any sensitive information that prevents from sharing it with you :P
[9:06] <Lartza> To which the answer is, usually not unless you are mounting some cifs etc filesystems with passwords
[9:07] <xacktm> yeah could be; I didn't want to infer :)
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[9:13] <xacktm> thebigj: have you seen tutorials like https://hallard.me/raspberry-pi-read-only/ that moves some services in prep for read-only so they behave sanely?
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[9:15] <thebigj> xacktm: https://dpaste.de/tGMZ/raw
[9:15] <thebigj> Is tag "ro" at /boot parition mean the entire thing will be readonly?
[9:16] <thebigj> xacktm: I did observe that tutorial. Didn't helped much. Thanks for sharing.
[9:16] <xacktm> yeah, check out some tutorials on fstab https://help.ubuntu.com/community/Fstab#Options
[9:16] <xacktm> well, that hallard tutorial mentions fstab after all is prepped
[9:17] * mike_t (~mike_t@pluto.dd.vaz.ru) Quit (Remote host closed the connection)
[9:18] <xacktm> right here https://hallard.me/raspberry-pi-read-only/#crayon-5b48522141d33183342154-1
[9:19] <xacktm> ah dangit, the anchors aren't persistent
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[9:20] <xacktm> but it's there @ the middle of the page
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[12:10] <IamTrying> I have a very difficult client in Italy using my RPI device. He is asking me to have option to change IP address. But the problem is i want him to allow only change IP not access /etc/ or many other directory using SSH. How do i do that? So that after login via SSH putty, he can only use 1. sudo raspi-config 2. only see Network options?
[12:11] * s8548a (~s8548a@unaffiliated/s8548a) Quit (Ping timeout: 244 seconds)
[12:11] <IamTrying> Or is there 80, 443 page which allow to only work with ip modify?
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[12:12] <Habbie> IamTrying, DHCP is not an option?
[12:13] <IamTrying> Habbie: i set DHCP option auto. But he want to change his existing network therefore he need to change IP statically. I already gave him MAC address but he dont want to use MAC address. He wants to login via SSH and modify IP manually on the device.
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[12:20] <waveform> IamTrying, the network options in raspi-config don't allow static IP configuration as far as I know?
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[12:22] <IamTrying> waveform: looks like you are right, i dont get input fields
[12:23] <IamTrying> waveform: how can i give him one login. after login he cant do anything but gets to my bash script using ncurses
[12:23] <erm3nda> IamTrying, you can put some little binary with setuid root, that only can set the IP at configs
[12:23] <erm3nda> so him can ./changeIP $IP and nothing more
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[12:24] <IamTrying> Scenario 1: italy client login : helloworld pass: 1234 2. after login he gets a blue screen in his terminal asking IP: Subnet: Gateway: DNS1 DN2: ok | cancel
[12:24] <IamTrying> on cancel i kick out SSH
[12:24] <waveform> IamTrying, you could set his login shell to your bash script
[12:24] <IamTrying> on OK i change IP and logout him
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[12:25] <IamTrying> OK - make sense waveform that is what i want i want only OK | Cancel button for him after SSH login
[12:25] <IamTrying> waveform: do you know any related reference please like which login shell file it is in R-PI? to assign it to my BASH ncurses script?
[12:26] <waveform> have a look at the chsh command and "man 5 passwd" for details of the fields in the passwd database (which is where the login shell is kept)
[12:26] <IamTrying> Excellent Thank you waveform
[12:26] <waveform> you'll probably have to add your bash script to the list of valid shells, which is in /etc/shells (man 5 shells has more info there)
[12:29] <mfa298> I'm not sure Linux cares so much about things being in the list of valid shells (although potentially worth checking out)
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[12:30] <IamTrying> waveform: this is exactly what i am trying. 1) clientXYZ login with my manual default username/pass 2) client1 ssh using putty to the device 3) after login. he directly goes to my Ncurses application where i have OK | Cancel button for NEW IP/Subnet Mask/Gateway/DNS1/2 4) On OK or Cancel action he is logged out from SSH. user should be impossible to view anything else that that OK/Cancel.
[12:30] <IamTrying> I hope i can do that with /etc/shells right or just with Login shell right?
[12:31] <waveform> mfa298, yeah - can't remember off the top of my head but figured it's worth mentioning :)
[12:31] <waveform> IamTrying, yes - the login shell is the thing that is run in response to a user logging in (either via the console, or SSH, or whatever). Typically it's an interactive shell like bash but it can basically be anything that'll interact with the allocated terminal
[12:32] <IamTrying> Perfect. Genius option. thanks a lot waveform
[12:32] <waveform> when the "login shell" (whatever that may be) terminates, the user is logged out (and in the case of getty, the terminal handler, it'll re-display the login prompt; in the case of SSH it'll close the connection)
[12:33] <waveform> for example, it used to be common to set the login shell to "/bin/false" to deny interactive logins to users (because upon successful login, /bin/false would run - immediately quit and that was it: session over :)
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[12:43] <mfa298> waveform: or /bin/true depending on what the user might be allowed to do (often /bin/true would allow the user to access other services imap/ftp etc, and /bin/false would deny access to those as well)
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[12:45] <waveform> indeed - I see there's also "/usr/sbin/nologin" these days too - presumably similar to /bin/false at a guess
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[14:28] <unkn-error> hello
[14:28] <unkn-error> is it possible to DISABLE, pasword-LESS sudo?
[14:28] <unkn-error> if yes, how?
[14:28] <Habbie> yes, remove NOPASSWD from sudoers
[14:29] <unkn-error> where is sudoers?
[14:29] <unkn-error> with nano?
[14:29] <Habbie> use visudo
[14:29] <Habbie> if necessary use update-alternatives to configure it to use nano
[14:29] <Habbie> if it doesn't already
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[14:31] <unkn-error> root@redbox:~# update-alternatives --config sudoers
[14:31] <unkn-error> update-alternatives: error: no alternatives for sudoers
[14:31] <unkn-error> hmm
[14:33] <wigums> like Habbie said... edit the sudoers file
[14:34] <unkn-error> ok. it is -f
[14:34] <unkn-error> got it
[14:34] <Habbie> what is -f?
[14:34] <wigums> lol
[14:35] <unkn-error> https://pastebin.com/wKCqHi3A
[14:35] <unkn-error> it was not working whitout -f
[14:35] <Habbie> just visudo
[14:36] <unkn-error> it is not opening with just visudo
[14:36] <unkn-error> if I type visudo /etc/sudoers
[14:37] <unkn-error> it says: usage: visudo [-chqsV] [-f sudoers] [-x output_file]
[14:37] <Habbie> it is impossible to help somebody who keeps trying random things
[14:37] <unkn-error> however, when I use -f it is opening
[14:37] * bitmask (~bitmask@pool-100-35-64-150.nwrknj.fios.verizon.net) has joined #raspberrypi
[14:37] <unkn-error> I do not try random things
[14:37] * t3chn0punk (~t3chn0pun@a36t-bbb02.berlin.freifunk.net) Quit (Ping timeout: 260 seconds)
[14:38] <unkn-error> viewing the file with visudo -f or less from /etc/sudoers I do not see NOPASSWD written there
[14:38] <Habbie> yes, you are trying random things
[14:38] <Habbie> and probably not telling us about half of them
[14:38] <wigums> ^^
[14:38] <Habbie> but we can tell from the half you are telling us about
[14:38] <Habbie> anyway
[14:38] <unkn-error> remain on topic pls
[14:39] <unkn-error> step by step, how do I disable the no-passwd sudo?
[14:39] <Habbie> i am on topic
[14:39] <wigums> the topic currently is why you arent listening
[14:39] <Habbie> by removing NOPASSWD
[14:39] <unkn-error> how do I remove NOPASSWD?
[14:39] <wigums> visudo
[14:39] <unkn-error> oh
[14:40] <unkn-error> ok
[14:40] <wigums> not visudo /etc/sudoers
[14:40] <unkn-error> it was so simple
[14:40] <unkn-error> I belived that visudo is a text editor
[14:40] <Habbie> unkn-error, does sudo ask for a password the first time? or really never?
[14:41] <unkn-error> as far as I remember, It asked for a password once, but that was like a half a hour or even 1 hour back since then I did no reboot
[14:42] <unkn-error> I did a reboot now
[14:42] <Habbie> then it could be timestamp_timeout in the sudoers file as well
[14:42] <wigums> why reboot?
[14:42] <Habbie> i'm unsure a reboot clears that cache
[14:42] <Habbie> brb
[14:45] <unkn-error> yep, it did not. I just rebooted and he is not asking for a passwd
[14:46] <unkn-error> it is a fresh install, just installed and updated nothing less or more, no configs done
[14:46] * giddles (~giddles@unaffiliated/giddles) Quit (Quit: family time)
[14:47] <unkn-error> this is the config --> https://pastebin.com/RKLs5qiw
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[14:52] <Habbie> unkn-error, can you try sudo -K
[14:52] <Habbie> unkn-error, and then try sudo again?
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[14:53] <unkn-error> Habbie, sudo -K https://pastebin.com/w6ANgjSm
[14:56] <Habbie> unkn-error, is there anything in /etc/sudoers.d?
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[14:57] <unkn-error> /etc/sudoers.d# ls
[14:57] <unkn-error>
[14:57] <unkn-error> 010_pi-nopasswd README
[14:58] <Habbie> aha!
[14:58] <unkn-error> in 001_pi_nopswd is written
[14:58] <unkn-error> pi ALL=(ALL) NOPASSWD: ALL
[14:59] <unkn-error> I assume I do " nano 001_pi_nopswd " and modify something regarding NOPASSWD: ALL?
[15:00] <Habbie> i think visudo -f can be used here
[15:00] <Habbie> and it will help you avoid syntax errors
[15:00] <Habbie> but i've never done visudo -f
[15:00] <unkn-error> this comes by default, in the default rasppaberian install
[15:01] * w17t (~w17t@unaffiliated/w17t) Quit (Quit: Leaving)
[15:01] <unkn-error> what do I need to modify for sudo to ask a password before executing?
[15:02] <Habbie> remove NOPASSWD:
[15:05] <unkn-error> uff
[15:05] <unkn-error> I got this " >>> 010_pi-nopasswd: syntax error near line 1 <<<
[15:05] <unkn-error> "
[15:05] <unkn-error> if I remove " NO PASSWD: ALL"
[15:05] <unkn-error> or if I remove only "ALL"
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[15:16] <{HD}> If I am already ssh’ed into my pi is there an easier way to use scp?
[15:16] <mfa298> unkn-error: I think you can just delete the /etc/sudoers.d/010_pi-nopasswd file, there's a default rule in the main sudoers file that gives sudo access with password to anyone in the sudo group (which pi should be)
[15:17] <larsks> {HD}: not really.
[15:17] -christel- [Global Notice]: Hi all, we're excited to be able to announce that Bradley Kuhn, Chris Lamb, Kyle Rankin, Leslie Hawthorn and VM Brassuer are all keynoting this year's freenode #live in Bristol, UK on 3-4 November. You too can join the speaker line-up, the CFP is open! More info http://freenode.net/news/freenode-live-keynotes
[15:17] <Khaytsus> {HD}: What do you mean, avoiding a password or something? set up keys... or use sshfs
[15:17] <unkn-error> I have found what I need to to, Habbie , larsks {HD} -->> I need to change a line
[15:18] * davr0s (~textual@host81-155-68-221.range81-155.btcentralplus.com) has joined #raspberrypi
[15:18] <unkn-error> " pi ALL=(ALL) PASSWD: ALL "
[15:18] <larsks> You can do something really hacky by sending files over your existing ssh session using zmodem, but I wouldn't recommend it :)
[15:18] * kenvandine (~kenvandin@ubuntu/member/kenvandine) has joined #raspberrypi
[15:18] <unkn-error> from "NOPASSWD" to "PASSWD"
[15:18] <larsks> unkn-error: you should just be able to drop the PASSWD
[15:18] <Hulex> anyone here knowledgable about running transmission on raspbian? Having some issues regarding "checking" a torrent's data so it skips right to seeding
[15:18] <larsks> Eg: pi ALL=(ALL) ALL
[15:18] <{HD}> I am using keys already. I will search sshfs
[15:18] <Habbie> PASSWD: also works
[15:19] <Habbie> Hulex, just to be clear, that's not a raspbian-specific question
[15:19] <unkn-error> Hulex, I use Qbittorrent on windows and linux. Transmission had some privacy / security issue 1 year back. maybe 2.
[15:19] <Habbie> Hulex, but why do you want it to skip checking?
[15:19] <Hulex> Habbie: not skip checking, but to I guess force checking instead of deciding "nah this data isn't good" and skipping to redownloading
[15:19] <Khaytsus> {HD}: sshfs sets up a local mount to a remote ssh machine... besides network latency it is more or less like it's a local filesystem
[15:20] <Habbie> Hulex, wouldn't a force check come to the samen conclusion?
[15:20] <Khaytsus> I use it quite a bit... my remote edit wrapper uses sshfs too. and since it's ssh, as long as you can ssh into it, you can do it.
[15:21] <Habbie> *same conclusion
[15:21] <Hulex> Habbie: what I mean is it doesn't even bother to check
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[15:22] <Habbie> Hulex, but you said it skips right to seeding - do you mean it skips right to downloading?
[15:22] <Hulex> Habbie right that's what I meant sorry lol
[15:22] <Habbie> ok!
[15:22] <Habbie> at least the question is clear now :>
[15:22] <Hulex> yeah my bad I'm hyper at work today
[15:23] <Hulex> I'm also pretty new to linux
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[15:25] <unkn-error> using visudo -f on the file from /etc/sudoers.d/010_pi-nopasswd
[15:25] <unkn-error> I changed the line to:
[15:25] <unkn-error> pi ALL=(ALL) PASSWD: ALL
[15:25] <unkn-error> then reboot
[15:25] <unkn-error> but when I type
[15:25] <unkn-error> sudo -i
[15:25] <unkn-error> it dosen't ask for a passwd
[15:27] <Habbie> you really don't need to reboot
[15:28] <Khaytsus> You did it wrong unkn-error.. it just works. Check the fiel again, maybe you didn't really edit it
[15:28] * BurtyB thought you just removed the /etc/sudoers.d/010_pi-nopasswd file to make it ask for a password
[15:28] <Khaytsus> BurtyB: Well, the 'pi' account wouldn't have sudo access then
[15:28] <BurtyB> Khaytsus, yes it would and it does
[15:28] * Khaytsus blinks
[15:29] <Khaytsus> User has to be defined in sudoers somewhere to have access.. so where is pi defined?
[15:29] <mfa298> 13:16 < mfa298> unkn-error: I think you can just delete the /etc/sudoers.d/010_pi-nopasswd file, there's a default rule in the main sudoers file that gives sudo access with password to anyone in the sudo group (which pi should be)
[15:29] <unkn-error> Khaytsus, using "less" to see what is in the file, to verify gives me this: pi ALL=(ALL) PASSWD: ALL
[15:29] <unkn-error> 010_pi-nopasswd (END)
[15:30] <mfa298> it's almost like I said that a quarter hour ago
[15:30] <unkn-error> I will delete the file to see what happens
[15:30] <Khaytsus> Ah.. Yeah. This has been going on 30 minutes? How to sudo? wow.
[15:30] <mfa298> Khaytsus: pi should be in the sudo group which has access to sudo (with a password)
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[15:31] <Khaytsus> mfa298: Yes yes.. I see that.
[15:31] <mfa298> unkn-error: note that sudo will remember you used sudo from that terminal for a while (15 minutes) so you might not have to give the password until that timer has expired
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[15:32] <{HD}> Khaytsus: cool I will give sshfs a shot
[15:32] <unkn-error> DONE !!!! Removing the file, now IT IS ASKING for a passwd
[15:32] <unkn-error> finnaly!
[15:32] <BurtyB> and putting "Defaults timestamp_timeout=0" in /etc/sudoers make it ask every time and not cache
[15:32] <unkn-error> pfiiuuu!!
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[15:33] <unkn-error> I wish to be asked every time, I do mistakes sometimes and the time required to input the passwd, I can re-check in my mind the commands if they are correct
[15:34] * TyrfingMjolnir (~Tyrfing@62.92.82.250) Quit (Quit: leaving)
[15:34] <unkn-error> for no passwd session, there is always -i
[15:35] <unkn-error> now, regarding sudo...
[15:35] <Khaytsus> unkn-error: When you're typing a password is not the time to ponder if your commands are right or not.
[15:35] <unkn-error> why debian is using sudo instead of su?
[15:35] <Khaytsus> That's like setting a clock 5 minutes ahead to get somewhere on time.
[15:35] <Khaytsus> unkn-error: Look up what sudo is.
[15:35] <mfa298> most things seem to prefer sudo over su these days as it's seen as being more secure.
[15:36] <mfa298> personally I think there are arguments both ways.
[15:36] <Khaytsus> Being able to run targeted programs as root without root access is the security bit
[15:36] <Khaytsus> Giving random people sudo access to * does nothing really
[15:36] <unkn-error> " execute a command as another user " <<--this is sudo this is su -->> "su - change user ID or become superuser"
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[15:37] <{HD}> Hum sshfs is not installed by default for any of my OSes. I want to try to find a tool that is a standard. I think I will just learn scp better.
[15:37] <Khaytsus> unkn-error: no.. You missed that you can put _context_ on sudo use.
[15:37] <Khaytsus> su there is no context. If you have the password, that's it.
[15:38] <Khaytsus> {HD}: um.. install it? it doesn't need to be on the remote side
[15:38] <unkn-error> sshfs is like ext4/fat/ntfs?
[15:39] <Khaytsus> sshfs is a network filesystem.
[15:39] <erm3nda> sshfs rocks
[15:39] <erm3nda> maps a remote folder over SSH
[15:39] <{HD}> If I can use scp to pull a file/folder from the server I will be set
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[15:39] <Khaytsus> {HD}: You can. What's stopping you?
[15:39] <{HD}> Khaytsus: just reading the man page now
[15:39] <{HD}> is what is stopping me
[15:40] <erm3nda> it's really easy to use
[15:40] <erm3nda> there's also a wraper around github called sshfsmgr
[15:40] * BenderRodriguez (~Foxhoundz@unaffiliated/foxhoundz) Quit (Ping timeout: 244 seconds)
[15:40] <Khaytsus> {HD}: /recurse
[15:40] <unkn-error> " advantage of SSHFS when compared to other network file system protocols is that, given that a user already has SSH access to a host, it does not require any additional configuration work, or the opening of additional entry ports in a firewall "
[15:40] <unkn-error> so this is kinda like windows/micro-soft SAMBA
[15:40] <erm3nda> yep, and it's SSH secured
[15:40] <Khaytsus> unkn-error: gross
[15:41] <Khaytsus> That's like saying a Porche is like a Yugo. Both cars.
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[15:41] <Khaytsus> What I like about sshfs is if I need to do something with it, I can.. gateway through my server directly into the workstation. No problem.
[15:42] <giddles> hey
[15:42] <giddles> ho
[15:42] <giddles> scan experts in here?
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[15:43] <{HD}> Holy moly I pulled data!
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[15:46] <{HD}> is there a way to combine "gpio -g mode 17 input" && "gpio -g mode 17 up"
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[15:48] <Khaytsus> {HD}: combine in what way? those are two separate commands.. you did combine them.. && means "if success, run the next command too"
[15:49] <{HD}> I was hoping for an "gpio -g mode 17 input_pullup"
[15:49] <{HD}> or similar
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[15:50] <unkn-error> is Docker to be used on raspbery pi?
[15:50] <Habbie> unkn-error, it is possible
[15:50] <unkn-error> or it would be to slow?
[15:50] <Habbie> docker itself does not really have overhead
[15:51] * SebastienThiry (~Thunderbi@91.177.172.29) Quit (Quit: SebastienThiry)
[15:52] <unkn-error> there was some os made for using pi as a remote surviliance camera, and I was thinking to learn to install that particular os into docker if it is possible or if i's worth it
[15:52] <Habbie> well, is there a pi-compatible docker image for it?
[15:52] <Khaytsus> https://google.com/search?q=docker+on+pi
[15:52] <Khaytsus> And yes; docker isn't a virtual machine. It just runs commands in a sandboxed environment.
[15:53] <Khaytsus> If it's a whole OS, that's not what docker does.
[15:53] <shauno> docker runs just fine. the primary thing you'll run into is that most pre-made environments you try to run won't be built for arm, so you'll have to build a lot of your own
[15:54] <unkn-error> aww, ok. so for using docker I will need to dig it up for info first and manuals and so on
[15:54] <unkn-error> till then I will play with syncthing
[15:55] <unkn-error> but before syncthing
[15:55] <{HD}> whare are gpio 24&26 set to outputs by default?
[15:55] <{HD}> Seems out of place.
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[15:56] <unkn-error> I am in doubt about the filesystem which is raspaberian using by default => EXT4 with journaling turned on. Should I turn the journaling off?
[15:56] <Khaytsus> {HD}: You really should be using interrupts to handle all of this if you're doing a bunch of input buttons to do stuff. Why are you doing this all in shell scripts?
[15:56] <unkn-error> It will exaust / wear / age the sdcard that journaling?
[15:56] <unkn-error> it will be faster if the journaling option from ext4 will be turned off?
[15:56] <Khaytsus> Assume your pi card is going to die if you're writing to it frequently.
[15:56] * graphene (~graphene@46.101.134.251) Quit (Remote host closed the connection)
[15:56] <Khaytsus> And build around that assumption.
[15:56] <waveform> {HD}, they're outputs by default when SPI is enabled (can't remember if they are otherwise) because they're the chip select pins
[15:57] * TyrfingMjolnir (~Tyrfing@62.92.82.250) Quit (Quit: leaving)
[15:57] <waveform> (you should also find the other SPI pins, MISO, MOSI, etc are in one of the ALTx modes by default when SPI is enabled)
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[15:57] <{HD}> Khaytsus: idk. interrupts sound harder.
[15:57] * redstarcomrade (~quassel@cpe-104-175-255-182.socal.res.rr.com) Quit (Read error: Connection reset by peer)
[15:58] <Khaytsus> {HD}: no.. and will work better
[15:58] <Khaytsus> There's sample python script all over the internet handle to handle it
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[15:58] <{HD}> Khaytsus: Yes, I did switch to writing in python last night.
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[16:11] <gordonDrogon> {HD}, sorry - can't combine the commands.
[16:13] <gordonDrogon> {HD}, bcm_24 and bcm_26 are PWM pins - they may be set as output due to the sound system using them.
[16:15] <gordonDrogon> {HD}, oops - sorry - heads on upside down today - bcm_24 & 26 ... actually, not sure what they might be used for.
[16:15] <gordonDrogon> they're not spi pins.
[16:15] <waveform> gordonDrogon, I *think* he means 24 and 26 physical (just because those two the only ones I can see as OUT by default on my pi :)
[16:15] <waveform> (which are BCM 8 and 7)
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[16:15] <gordonDrogon> right - that makes more sens.
[16:15] <gordonDrogon> he was using the -g mode earlier, so I just assumed bcm_gpio numbers.
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[16:16] <gordonDrogon> {HD}, if you want a non-busy wait (ie. 'interrupt' ) in your bash script, then: gpio -g wfi 17 falling
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[16:32] <{HD}> Yes I was using physical pin #s earlier for 24 & 26
[16:32] <{HD}> I will man gpio wfi and see how it works...
[16:33] <{HD}> I am not doing anything complicated just screwing around really.
[16:33] <{HD}> gordonDrogon: Why did you remove gpio reset?
[16:33] <b10011> Hi, I have this problem, I created wpa_supplicant.conf (https://pastebin.com/4dLdEryf) and edited /etc/network/interfaces (https://pastebin.com/9DJn3EYd) and my RPi Zero W is still not connecting to my wlan
[16:33] <{HD}> haveing a "gpio to defaults" would be a great command
[16:34] <{HD}> I have since scripted it
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[16:37] <b10011> And my wlan is 2.4GHz WPA2-Personal with PSK and AES encryption
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[17:12] <gordonDrogon> {HD}, I removed it because it would crash your Pi.
[17:13] <{HD}> gordonDrogon: wow! I guess it did something other then setting default values then.
[17:14] <gordonDrogon> Pi versions changed, pin layouts changed
[17:15] <gordonDrogon> so it was hard to be generic.
[17:15] <gordonDrogon> also; google for garage door kills girl
[17:15] * takeme (~uuuuy@unaffiliated/takeme) has joined #raspberrypi
[17:15] <gordonDrogon> people were/are/will always do stupid things with computers. I have had more than one email starting: My pi rebooted and the door closed, how can I stop this ...
[17:16] <takeme> can i have session in vnc like using tmux in ssh?
[17:19] * Keanu73 (~Keanu73@2ProIntl/User/Geek/Keanu73) has joined #raspberrypi
[17:19] <{HD}> gordonDrogon: wow.
[17:21] <{HD}> I googled that but most of the results seemingly were not about DIY modified garage doors.
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[17:31] <on3pk> Hey guys, curious. How is the performance of the new model 3 b+ compared to an Intel Atom running at roughly the same clockspeed?
[17:32] * clemens3 (~clemens@mx.eniso-partners.com) Quit (Ping timeout: 240 seconds)
[17:32] <takeme> can i have session in vnc like using tmux in ssh? no one know it?
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[17:37] <gordonDrogon> I don't use either vnc nor tmux. others might, however that's really a generic unix/linux question, not that Pi specific, so there may be better anwers elsewhere...
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[17:59] <takeme> can i have session in vnc like using tmux in ssh? no one know it?
[18:00] <takeme> no one know it?
[18:01] <on3pk> I can't even find any modern benchmarks that compare current offerings from Intel and ARM
[18:03] <gordonDrogon> on3pk, the main issue is IO. If you're doing server type stuff then an Atom will run rings round a Pi.
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[18:03] <BurtyB> takeme, not sure I understand what you're asking but in the old days you could just type "vncserver" to start a[nother] vnc server for that user
[18:05] <takeme> if i use tmux in ssh, then i can have session if i exit from ssh, i can do it in vnc?
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[18:07] <BurtyB> takeme, yes - you can connect/disconnect as you want with vnc
[18:09] <on3pk> gordonDrogon, that makes a lot of sense.
[18:10] <on3pk> Is that due to the RPi's using a microsd card?
[18:14] <takeme> if i disconnect it, then program will be terminated?
[18:14] <takeme> BurtyB: ?
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[18:18] <takeme> if i disconnect vnc, then program will be terminated?
[18:18] <takeme> BurtyB: ?
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[18:27] <shbrngdo> RPi also uses USB for the ethernet (on 3 anyway), things like that. it's architecture is NOT designed for high throughput, but rather smallness and inexpensiveness and GPIO and other 'cool factor' things that experimenters and IoT devs might want
[18:28] <shbrngdo> if you need a server platform, RPi isn't really 'fit for purpose' for that sort of thing. not like you can't, but RPi's purpose is just different
[18:29] <shbrngdo> my appeal to RPi is the 'Arduino-like' devices with ARM + Linux or FreeBSD for networking stuff and shell, etc.
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[18:31] <shbrngdo> oh - gordon - I haven't forgotten the wiringPi port for FreeBSD - it's just that the kernel has needed some updating. I got some fixes in place for SPI - now it's similar to spidev in a couple of important ways.
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[18:31] <stiv> horses for courses. people forget that there are actual different use cases
[18:32] <shbrngdo> yeah and try to make square pegs fit into round holes anyway
[18:32] <shbrngdo> you CAN but it's still a square peg in a round hole
[18:32] * shbrngdo gets "the bigger hammer"
[18:34] <shbrngdo> friday the 13th. w00t!
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[18:37] <gordonDrogon> shbrngdo, no wories - I've had a period of downtime/illness the past few weeks/months, so whatever, etc. :)
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[18:41] <on3pk> shbrngdo, My use case for a new RPi would be to watch videos using Chromium
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[18:43] <on3pk> Is that something the newer RPi models would be OK at handling? I have a Pi 2 which struggled a bit with it
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[18:45] <on3pk> and by struggled a bit I mean, really couldn't do it...
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[18:56] <BurtyB> takeme, it will still be running
[18:56] <takeme> ah great
[18:56] <takeme> thanks :)
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[19:08] <gordonDrogon> on3pk, the SoC in the Pi's were designed for movie viewing.
[19:09] <gordonDrogon> so even the first Pi, 6 years ago was good at it - 1080p though.
[19:11] <on3pk> Really? hm. I wonder if pepper flash on Chromium was slowing things down. I remember some stuttering when I was doing things on the 2 B
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[19:15] <stiv> movie viewing is different than running chromium + movie viewing
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[19:22] <on3pk> that is very true
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[19:22] <gordonDrogon> yea, don't use a web browser, use a movie player. omxplayer or whatever it is these days.
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[19:23] <CoJaBo> Can confirm, even my laptop struggles to play hd video in firefox, where 4k plays fine in vlc
[19:24] <on3pk> Using a web browser to stream videos/gifs is part of the use case. They don't need to be HD videos.
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[19:28] <stiv> and just like that, we're back to horses for courses
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[19:30] <xgpt> suggestions for easiest to use openvpn or othre vpn software? I'd like to be able to securely tap into my own internal network while outside my home for purposes of netflix/hulu/etc.
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[19:36] <Cobalt> Hello. Anyone have any experience running a RPi3 as a Time Machine backup over wireless?
[19:36] * akk_ (~akkana@75-161-36-163.albq.qwest.net) has joined #raspberrypi
[19:37] <Cobalt> I've seen a couple of tutorials on the net, and wondered about which one would offer the best results over and hence the question.
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[19:44] <Khaytsus> Cobalt: time machine, as in the backup solution? What do you use for storage?
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[20:30] <RoyK> Cobalt: there are some howtos on how to use time machine with samba - should work
[20:31] <RoyK> doesn't always work, though
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[20:31] <RoyK> Cobalt: installing samba on a pi is trivial
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[20:33] <RoyK> Khaytsus: time machine is the backup solution that comes with macOS
[20:34] <unkn-error> hmmz
[20:34] <unkn-error> Time Machine is not working on arm
[20:34] <unkn-error> as I remember
[20:34] <unkn-error> I tried in ManjaroARM to compile it but it failed
[20:34] <RoyK> time machine works on macs
[20:35] <RoyK> you just need to setup a samba server as a backup target
[20:35] <unkn-error> oh. yes. sorry.
[20:35] <unkn-error> it was " Timeshift "
[20:38] * VonDutch is now known as RatFink
[20:38] * RatFink is now known as VonDutch
[20:42] <Khaytsus> unkn-error: I maybe missed the answer; time machine? Is that backup software or?
[20:42] <unkn-error> it was " Timeshift "
[20:42] <unkn-error> my bad
[20:44] <Khaytsus> system restore tool?
[20:44] <unkn-error> yep, I use it on laptop
[20:44] <unkn-error> but I have tested it on mbr+csm not on uefi
[20:45] <Khaytsus> gotcha... I do something similar, but it's just backups. Restore is manual. cp hardlinks, rsync to get updates.. 4 times a day, 5 days, 4 weeks. So the older the file, the less granular the backup but that's generally fine
[20:46] <Khaytsus> For stuff that doesn't change much, it's basically 100% space usage obviously. A typical filesystem, with /home etc.. is about 150-180%
[20:47] <Khaytsus> Each of my machines does it on their own, and then the latest is sent to my server weekly for another snapshot. And then every few months I rotate out a disk from a drawer at work and copy those snapshots to it for free offsite storage ;)
[20:50] <unkn-error> wowww. Khaytsus that is a lot of work
[20:50] * InverseRhombus (~InverseRh@90.252.18.123) Quit (Ping timeout: 240 seconds)
[20:50] <unkn-error> and time spent
[20:52] <Khaytsus> huh? nah.. My part is every 4-5 months I bring the drive home, plug it into the sata dock and run a command ;)
[20:52] <Khaytsus> Setting it up on a new machine I have a git repo.. copy files around, get 'em in crontab.. over time tweak the exclude file
[20:52] <unkn-error> oh, I see
[20:53] <unkn-error> I installed vivaldi on my pi
[20:53] <Khaytsus> The rest all runs on its own :P
[20:53] <unkn-error> it is working nice
[20:53] * willy23123 (~willy2312@86-42-103-154-dynamic.agg2.lky.bge-rtd.eircom.net) Quit (Quit: Colloquy for iPhone - http://colloquy.mobi)
[20:53] <unkn-error> except the video on fb
[20:53] <unkn-error> :)
[20:53] <Khaytsus> For pis honestly I just dd the card when I'm done setting one up and then maybe every few months after that if I've made changes.. so when the sdcard dies I can restore from the back up
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[20:53] <unkn-error> anyway, I probably solve that later
[20:54] <Khaytsus> But to avoid them dying in the first place, I set /var as tmpfs and turn off all logging... that pretty much stops most writing
[20:54] <unkn-error> the problem with dd is that a lot of space is required. my microSD card is 32 gb
[20:55] <unkn-error> and I am thinking to move the system on a external mechanical hdd which has 1 TB
[20:55] <Khaytsus> Yeah.. I bzip the image.. since like you, the card might be 32 but the real stuff is like.. a few gigs
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[20:56] <Khaytsus> IDEALLY when I'm setting up a pi it's more or less single purpose and I keep those files separate, including how I did it... In reality I rarely do that completely :(
[20:56] <Khaytsus> Like when I set up my pi tracklogger I mucked iwth stuff so much to get ntpd working off the gps I have no idea what I did ;) it just works
[21:00] * mike_t (~mike_t@95.67.246.49) Quit (Remote host closed the connection)
[21:00] <unkn-error> my Pi was a gift
[21:00] <unkn-error> :)
[21:00] <unkn-error> to be honest, it was the most amazing gift which I recived in last 5 years
[21:01] <waveform> Khaytsus, if you want to avoid SD card writing check out the newer bootcode.bins which can happily boot off an attached USB HD or network via TFTP (these days my main dev pi has a tiny 512Mb SD card left over from something which just contains bootcode.bin and the rest is on an SSD)
[21:02] <waveform> (and yes, an SSD is a bit pointless with a Pi but it's a tiny 40Gb thing that was also going spare - perfect for a Pi though :)
[21:02] <Khaytsus> waveform: oh no these are all standalone things.. some of them not even on a network
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[21:02] <Khaytsus> It's pretty easy to make them log to tmpfs :)
[21:03] <waveform> ah, in that case good plan :)
[21:03] <Khaytsus> none /var/log tmpfs size=2M,noatime 0 0
[21:03] <Khaytsus> note to self.. don't do just /var /var/run missing makes some programs angry
[21:04] <Khaytsus> For those I might need logs, I tweak logrotate to be pretty aggressive to keep <2m
[21:04] <Khaytsus> others I just disable rsyslog
[21:04] <waveform> I thought in these systemd days, /var/run was just a symlink to /run
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[21:04] <Khaytsus> right, maybe.. but I had one I had /var tmpfs and it kept freaking out that /var/run didn't exist
[21:04] <Khaytsus> so I wound up doing mkdir /var/run which felt dumb
[21:04] <Khaytsus> heh
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[23:00] <ngc0202`> i'm buying a raspberry pi 3b+, and I sort of remember from the last time I bought a rpi that there was some considerations you have to make for the SD Card?
[23:00] <ngc0202`> I wanted to make sure I don't buy something incompatible. Am I remembering correctly?
[23:00] <ngc0202`> I was looking to buy this: https://www.amazon.com/gp/product/B073JYVKNX/
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[23:02] <Lartza> ngc0202`, There shouldn't be
[23:02] <ngc0202`> Oh ok
[23:02] <ngc0202`> so I'm good to buy whatever?
[23:03] <Lartza> In theory at least
[23:03] <ngc0202`> Ok
[23:03] <Lartza> There is https://elinux.org/RPi_SD_cards because for some reason or another some cards don't work
[23:03] <Lartza> But generally everything should
[23:03] <Lartza> You want Class 10 of course for the speed, and a namebrand for reliability
[23:03] <Lartza> And you want to buy it from a reputable seller, not e-bay so you are getting what you are buying
[23:04] <ngc0202`> :O
[23:04] <ngc0202`> Amazon is offering me free one day shipping hypee
[23:04] <ngc0202`> I was kicking myself for not ordering sooner
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[23:05] <Lartza> fwiw SDSQUAR-032G-GN6MA is listed as working on the wiki, nobody has tested the 64GB version, so you are probably fine
[23:06] <ngc0202`> great, thanks!
[23:06] <ngc0202`> I'm not really sure I need 64gb, but I figured I might as well
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[23:07] <Lartza> You probably won't since the SD card is a slow media for anything serious too
[23:07] <ngc0202`> it'll already have an external drive for NAS
[23:07] <ngc0202`> which.. I don't know how to set up yet.. but I assume shouldn't be too hard
[23:08] <Lartza> An USB drive to make the Pi a NAS?
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[23:14] <ngc0202`> Yeah
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[23:20] <Lartza> ngc0202`, Should be just fairly plug and play, then using samba/nfs or something to share it :P
[23:20] <Lartza> Needs to be an USB drive with an external power supply if it's an HDD, and you are limited to 300mbps overall shared between USB and network
[23:20] <ngc0202`> cool
[23:20] <ngc0202`> woah really? why?
[23:20] <Lartza> Why which one?
[23:20] <Lartza> :D
[23:21] <ngc0202`> external power
[23:21] <Lartza> Because the Pi most of the time doesn't deliver enough
[23:21] * InverseRhombus (~InverseRh@90.252.18.123) Quit (Ping timeout: 260 seconds)
[23:21] <Lartza> It only pushes out 6 watts
[23:21] <ngc0202`> is this specific to using it as a NAS or you mean in general with an HDD?
[23:21] <Lartza> In general
[23:21] <ngc0202`> oh ok
[23:22] <ngc0202`> I used it for a couple of years with a 3B so it should at least work
[23:22] <ngc0202`> idk what sort of damage I may have caused, but I was able to stream from it fine
[23:22] <Lartza> It shouldn't pretty much work at all if it doesn't work
[23:23] <Lartza> You can probably get it to fail by plugging other USB devices in :P
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[23:23] <Lartza> The 300mbps limit is pretty specific to NAS usage though, and makes the Pi a suboptimal NAS since it's so slow
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[23:24] <Lartza> You're basically limited to 50mbps on a 3B and 150mbps on a 3B+
[23:24] <Lartza> or wait no
[23:24] <Lartza> 100mbps on a 3B at best and hopefully at least 150mbps on 3B+
[23:24] <wigums> over usb2?
[23:24] <wigums> no?
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[23:25] <Lartza> wigums, Yes?
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[23:35] <ngc0202`> no usb3 on the pi?
[23:35] <ngc0202`> and it actually had a USB keyboard and wifi adapter plugged into USB, alongside the HDD
[23:35] <ngc0202`> No idea what sort of power any of those things draw, but it worked for the most part
[23:35] <ngc0202`> only gave the low voltage symbol when booting, sometimes
[23:36] <chris_99> nopey none of the pis have usb3 :'(
[23:37] <ngc0202`> weird
[23:37] <ngc0202`> are there plans for a rpi4?
[23:37] <ngc0202`> i feel like it's been on 3 for a while
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[23:46] <Lartza> ngc0202`, Low voltage isn't about the USB, that's your whole Pi running out of power and usually not good
[23:46] <Lartza> Bad power supply or cable
[23:46] <Lartza> And no usb3, it's an USB2 hub that has the ports and the ethernet plugged into it
[23:46] <chris_99> maybe pi 4, can support 3.2 ;)
[23:46] <ngc0202`> probably the cable, idk where it came from
[23:47] <Lartza> All about cost, would not assume anything over 3.0
[23:48] <Lartza> ngc0202`, The last word about rpi4 was iirc, don't hold your breath
[23:48] <chris_99> awh
[23:48] <Lartza> Maybe next year, who knows
[23:49] <ngc0202`> oh ok
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[23:49] <Lartza> The foundation is very secretive about these things and only announces them very little beforehand
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[23:56] <Zardoz> chris_99: it's a matter of cost. RPIF will more like not do 3.1 or higher till the cost can come down. they have proven they like to get the RPI at a 35$ price point.
[23:57] <Lartza> That is and will indeed be the pricepoint of the rpi4
[23:57] <chris_99> mm yeah, i don't know of even any laptops with 3.2 heh, although i've not really looked, but that can do 20Gbps apparently
[23:57] <Lartza> At least most likely
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[23:58] <Zardoz> the cost on USB 3.x is still really high.
[23:58] <Lartza> USB3 isn't really needed on the RPi either
[23:58] <chris_99> i think usb3 would be good
[23:58] <Zardoz> not really
[23:58] <Lartza> So there aren't many pros in including it
[23:58] <chris_99> for disks
[23:59] <Lartza> But that's for a small use scenario outside the intended use of the RPi pretty much
[23:59] * cave (~various@h081217094244.dyn.cm.kabsi.at) Quit (Remote host closed the connection)
[23:59] <Zardoz> I think it good of them to keep the cost down to 35$ and update it when it becomes possible at the price point.

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