#raspberrypi IRC Log

Index

IRC Log for 2015-04-19

Timestamps are in GMT/BST.

[0:00] <jer> ozzzy, so no driving empty school busses or motorcycles for you! =]
[0:00] * llorllale (~llorllale@179.52.229.190) has joined #raspberrypi
[0:03] <dodokuse> tow an empty schoolbus full of motorcycles
[0:03] <ozzzy> no driving big straight trucks either
[0:03] <dodokuse> ... with a bicycle :D
[0:04] <ozzzy> I had DZ and M
[0:04] <ozzzy> now I just have G
[0:04] <dodokuse> i drove a giant truck with air brakes before... i was afraid my foot would slip off the brake pedal because i had to push down so hard
[0:05] * codestorm (~codestorm@cpe-75-83-205-183.socal.res.rr.com) has joined #raspberrypi
[0:05] <dodokuse> also, the parking brakes and other things were weird. lots of hissing.
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[0:05] <dodokuse> even the seat adjustment was air powered
[0:07] <DoctorD90> i go, n8
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[0:10] <MINIMAN10000> one thing i was wondering on the raspberry pi is undervolting. You can hop in a text file and set over_voltage 1-6 but I don't see anything on undervolting
[0:10] <MINIMAN10000> raspecifically speaking about the rasberry pi 2 B
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[0:13] <gagabone> :(
[0:13] <gagabone> Tails doesn't run on Raspy?
[0:13] * c00ljs (~c00ljs@177.142.74.227) has joined #raspberrypi
[0:14] <MINIMAN10000> But MAH TAILS!
[0:14] <MINIMAN10000> nah ive at least heard of it something something about security
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[0:15] <gagabone> ...
[0:16] * utack (~utack@ip923464f1.dynamic.kabel-deutschland.de) has joined #raspberrypi
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[0:17] <SpeakerToMeat> Sonny_Jim: It cvan also be tiresome when people doubt your needs. I understand lots of people think they need to do something because they don't know the alternatives. This is not the case and it's a very clearly simple expressed need.
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[0:19] * gagabone (~gagabone@gateway/vpn/privateinternetaccess/gagabone) has left #raspberrypi
[0:19] <SpeakerToMeat> Sonny_Jim: There's 4 projectors, and 5 raspberries and 5 sets of speakers, running 5 different videos of different length in a loop on omxplayer. at specific intervals (non periodic) of a 5 count loop set of the "main" video (which is not the longest), only one of the videos should produce sound. It's an art instalation
[0:20] <SpeakerToMeat> There's no remotes, no finger, no controlling people, only endless loops of videos whose possitions regarding eachother are always shifting given continuous loops of different length
[0:21] <Jack64> SpeakerToMeat: there should be some signal you can send to the running omxplayer that mutes it..
[0:22] * Trid (~tyler@2602:306:bde7:6b50:6c88:663d:f7ca:d5c9) Quit (Ping timeout: 245 seconds)
[0:22] <SpeakerToMeat> Jack64: No from the front, while the omx library omxplayer uses has a SetMute method, it is not exposed to any keystroke by omxplayer. But checking the source code for omxplayer and the embedded omx library, I saw it has a dbus call I can use for mute.
[0:23] <SpeakerToMeat> Jack64: I was going to replicate the methods used to expose SetVolume to a keystroke to bring a keystroke to SetMute, but this is better/simpler. all I need to do is make one of two dbus calls.
[0:23] * NemeSys (~NemeSys@unaffiliated/nemesystem) Quit (Quit: Leaving)
[0:24] <Jack64> maybe you should pursue that, a quick google search turns up nothing. it's weird there's no key binding for mute, I don't consider mute to be an optional feature on a media player..
[0:25] * pklaus (~pklaus@p200300514508CB00CDE3D66C013E3F99.dip0.t-ipconnect.de) has joined #raspberrypi
[0:26] <SpeakerToMeat> Sonny_Jim: There's 8 speakers with no external volume or power control methods. And the videos always shift regarding one another. the options to act externally here are either setting up 8 triact/relay boards to manually power the speakers on/off via gpio control, or make day long loop compilations of 5 videos and calculate shifting mute periods to cover a whole day and have them reset the exhibit
[0:26] <SpeakerToMeat> daily. both are methods that require LOTS of resources, thus I analized and determined producing a mute on th eplaying system was the fastest simplest solution, and I it seems I was right, specially now that I found a working mechanism
[0:27] <SpeakerToMeat> Jack64: it is strange. But remember omxplayer was a test player done by a group to try doing decoding and playing on the raspberry, and once it was dropped people continued to support and extend it because they saw other uses. Mostly automated I think, so it's not a very common player
[0:27] <SpeakerToMeat> Jack64: Anyhow modifying the code to bring a keystroke set to mute shouldn't be more than a day's work at most.
[0:27] <Sonny_Jim> SHouldn't be more than 20 minutes tbh
[0:27] <Sonny_Jim> There's code already there to read the keys and change the volume.
[0:28] <SpeakerToMeat> Sonny_Jim: Yeah should be just copying and refactoring some code.
[0:28] <Sonny_Jim> But why do you have to mute it in the first place?
[0:28] <SpeakerToMeat> Sonny_Jim: But for now the dbus approach is better for my needs, since I'm controlling this all from python with a distributed system anyhow
[0:29] <SpeakerToMeat> Sonny_Jim: Because the main video should only sound during certain moments, the others should sound at different intervals. they're all on a common space.
[0:29] <Sonny_Jim> So some poor sod has to sit there all day hitting a mute button?
[0:30] <SpeakerToMeat> There is no mute button dude. How many times do I need to say this?
[0:30] <SpeakerToMeat> It's automated
[0:30] <Jack64> Sonny_Jim probably meant an external mute
[0:30] <SpeakerToMeat> It's controlled from a central unit with python code communicating thorough a queue
[0:30] * andersoldahl (~andersold@2601:6:7580:1cd:59a6:3c47:bed7:221a) Quit (Read error: Connection reset by peer)
[0:30] <SpeakerToMeat> Ah. well there's no external mute either
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[0:31] <SpeakerToMeat> Audio goes direct to amplified speakers
[0:32] <Jack64> ah, that makes it harder yes
[0:32] <Sonny_Jim> So there's more than one Pi?
[0:32] <Jack64> dbus seems to be your best bet then, especially for use with distributed control
[0:32] <SpeakerToMeat> there's 5 pis
[0:32] * lord4163 (~lord4163@78-68-207-39-no226.tbcn.telia.com) Quit (Ping timeout: 255 seconds)
[0:33] <SpeakerToMeat> Jack64: Yes, the unit with the "main" video has a schedule list of when sound must be given to one of the other PIs, and send command via rpc or a message queue
[0:33] * lord4163 (~lord4163@78-68-207-39-no226.tbcn.telia.com) has joined #raspberrypi
[0:33] * hjf_ (~hjf@unaffiliated/hjf) has joined #raspberrypi
[0:34] <hjf_> has anyone tried to use raspi as a video multicast client?
[0:35] <hjf_> a friend of mine wants to set up a bunch of TVs and display the same picture in all of them, distributed in a location that's about 10.000 square meters
[0:35] <hjf_> i told him maybe raspberry pies in each TV would work
[0:35] <SpeakerToMeat> pictures or video?
[0:36] <hjf_> video would be great
[0:36] <pksato> all videos on sync?
[0:36] <hjf_> not critical
[0:36] <hjf_> it's a bus station, he wants to display bus times and advertisements
[0:36] <hjf_> he basically wants to broadcast the screen of a computer to all TVs
[0:36] <pksato> Yes, some guy make patch to oxmplayer control others player on other pies.
[0:37] <hjf_> HDMI would be too expensive
[0:37] <hjf_> so maybe raspi every few TVs and an HDMI splitter
[0:37] <pksato> ah... signage
[0:38] <hjf_> if all raspi can tune into the same multicast stream it would be easy and scalable
[0:39] <hjf_> just basic linux and boot straight into video player, nothing else
[0:39] <pksato> https://www.screenlyapp.com/
[0:39] <jasabella> heh reminds me of junkyard jumbotron
[0:39] <hjf_> awesome
[0:40] <Sonny_Jim> SpeakerToMeat: How do you maintain sync? Surely over the course of a day the videos will slowly drift by a couple of seconds?
[0:41] <SpeakerToMeat> Only the main video is vital to sync regarding audio, a daily shutdown at night and powerup at day might be enough.
[0:41] <SpeakerToMeat> If not, I'll have to delve into timecode syncing. which will be a pita
[0:41] <SpeakerToMeat> And probably will have to drop omxplayer altogether and pray I can make hardware accelerated gstreamer or vlc decoding work
[0:42] <Bilby> hjf_, i'm using ~15 raspberry pi units as digital display boards
[0:42] <Bilby> using screenly
[0:42] <Bilby> no wait, we're using rise
[0:42] <Bilby> i evaluated a ton of them a year ago and that was the one that was best for our uses
[0:43] <SpeakerToMeat> Ugh Imma have dinner before I faint
[0:43] <SpeakerToMeat> People in IT
[0:43] <SpeakerToMeat> try never to help artist friends if you can avoid it
[0:43] <Bilby> !summon something squiggly and screaming to SpeakerToMeat
[0:43] <SpeakerToMeat> Bilby: Got sushi
[0:43] <Bilby> it's not a pearson's puppeteer, but it's not bad
[0:44] <SpeakerToMeat> Bilby: I'll check that one you say for future projects. How about libraries for rise? you dev in linux? good access to hardware devices and accel in libraries?
[0:44] <SpeakerToMeat> Bilby: Sick reference bro
[0:44] <Bilby> Rise is pretty good, they distribute a base install that is basically plug and go
[0:45] <Bilby> lemmie see if i can find the doc i was using to evaluate
[0:45] <SpeakerToMeat> Bilby: I really wanted to pummel Nessus after all his manipulations and stuff
[0:45] <Bilby> lol no shit, what an asshole
[0:45] <Bilby> err <_<
[0:45] * Gathis (~TheGrey@unaffiliated/gathis) Quit (Remote host closed the connection)
[0:45] * Bilby flees
[0:46] <SpeakerToMeat> even if it was the puppeteers intervention that eventually benefited humanity
[0:46] <Bilby> brb
[0:46] * sentriz (~sentriz@unaffiliated/sentriz) Quit (Quit: quiting)
[0:47] * Macuser (~textual@unaffiliated/macuser) Quit (Quit: My MacBook Pro has gone to sleep. ZZZzzz…)
[0:47] * strobelight (~strobelig@c-50-147-227-97.hsd1.ga.comcast.net) has joined #raspberrypi
[0:48] <SpeakerToMeat> Hell, power if acting funny
[0:52] <SpeakerToMeat> Sonny_Jim: Or you mean between the 5 movies? there is none. started all together via network command, but since they're different lengths they shift in regards to eachother all day. Only main movie has sound that's syncronous to video events, the others have ambient sound
[0:56] * diegoaguilar (~diegoagui@187-163-193-24.static.axtel.net) Quit (Remote host closed the connection)
[0:56] <Sonny_Jim> So, really what you wanted was a way to mute sound via the network across 5 pis
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[0:57] * MasterPiece (~MasterPie@unaffiliated/masterpiece) Quit (Remote host closed the connection)
[0:57] * dj_pi (~dj@c-107-5-228-80.hsd1.mi.comcast.net) Quit (Ping timeout: 256 seconds)
[0:58] <SpeakerToMeat> What I want is to mute sound on a pi, playing with omxplayer yes
[0:58] <SpeakerToMeat> the command to do so will come thorough the network in this case.
[0:58] <Sonny_Jim> ..over a network
[0:58] <Bilby> I just found all my digital signage research
[0:58] <Sonny_Jim> Really could have done with mentioning the 5 pis bit earlier ;-)
[0:58] <Bilby> i should update it and throw it up somewhere
[0:58] <SpeakerToMeat> Sonny_Jim: WHy?
[0:58] <SpeakerToMeat> Bilby: I'd be grateful for that
[0:58] <Sonny_Jim> Because there are only a few ways to mute over a network
[0:58] <Bilby> eh, with SSH all things are possible
[0:59] <SpeakerToMeat> Sonny_Jim: What extra ways do you have to mute locally that do not work over a network?
[0:59] <day> which is the most used minimal debian image for rasp2?
[0:59] <ali1234> SpeakerToMeat: do you only want to mute the audio regardless?
[1:00] <SpeakerToMeat> Bilby: I don't know what roll to eat last
[1:00] <SpeakerToMeat> ali1234: Yes.
[1:00] * exobuzz (~xbuzz@2001:470:1f09:1970:c49b:7ace:5466:f30b) Quit (Read error: Connection reset by peer)
[1:00] <ali1234> if so, just change the pin functions directly
[1:00] <Sonny_Jim> In future, try and explain what it is your are trying to do fully, rather than saying "No, that won't work because X"
[1:00] <SpeakerToMeat> ali1234: Somethign that needs to be done on omxplayer itself, since alsa doesn't affect it as it seems to be using direct hardware.
[1:00] <Bilby> Oh I hate that
[1:01] <SpeakerToMeat> Sonny_Jim: You see, the network part does NOT affect this at all.
[1:01] <ali1234> if you change the pin functions it is like unplugging the audio connector
[1:01] <Bilby> I usually try to eat them evenly and then save the last piece of my favorite one to eat the last
[1:01] <Bilby> SpeakerToMeat here's what I found - this is from Jul - Sep 2014 so a little old but not too bad. https://justpaste.it/klxx
[1:01] <Bilby> Iirc, Rise may be supporting video on the Pi2 soon
[1:02] <Bilby> basically what we do is point Rise at a google doc
[1:02] <SpeakerToMeat> Sonny_Jim: I feel you failed to read or grasp what I was saying and that was the reason for our impasse. I was clear, I need to mute audio, internally on the pi, without using external methods to mute. you refused to acknowledge it and chose to believe I was wrong and external methods were what I needed.
[1:02] <SpeakerToMeat> Bilby: I'll check it out, thanks a lot
[1:02] <Bilby> and have the person who updates the schedules just chnage the doc. it was easier than training them directly on the rise suite which is pretty complex :|
[1:02] <SpeakerToMeat> ali1234: Interesting. Where can I read more on this?
[1:02] * AirForce590 (4907ef9e@gateway/web/cgi-irc/kiwiirc.com/ip.73.7.239.158) has joined #raspberrypi
[1:02] * PKodon (~PKodon@unaffiliated/pkodon) Quit (Quit: KVIrc 4.3.1 Aria http://www.kvirc.net/)
[1:03] <Bilby> SpeakerToMeat You're welcome. I'm trying to convince my business partner to start publishing a blog of the neat stuff we do, if I can do that I'll start pushing up a ton of RasPi things
[1:03] <AirForce590> Bilby: Awesome!
[1:03] <SpeakerToMeat> Bilby: That sounds like fun. do you work in very different embedded projects?
[1:03] <ali1234> SpeakerToMeat: are you using HDMI?
[1:04] <SpeakerToMeat> ali1234: hdmi video, but plug (local) audio not hdmi audio
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[1:04] <Bilby> We work with a bunch of small businesses with weird problems so we're always looking for inexpensive solutions to things
[1:04] <SpeakerToMeat> Bilby: I like that, a lot, it's something me and dad want to do.
[1:04] <AirForce590> Bilby: Would you like to see my project?
[1:05] <SpeakerToMeat> Bilby: As he says, we integrate solutions we're not brand vendors with a warehouse of stale products to push :D
[1:05] <Bilby> IE rather than buying a distributed digital billboard system, build one out of Pi's. We're also experimenting with a Pi-based Asterix VoIP server and a Pi server to monitor remote server rooms
[1:05] <AirForce590> Wow
[1:05] <AirForce590> Awesome
[1:05] <SpeakerToMeat> Bilby: abotu the asterisk server, there is something a friend of mine did a long time ago you might find interesting.
[1:05] <Bilby> I have base code and designs to build a pi-based internet monitor that would automatically power-cycle modem / router if connectivity is lost and notify someone via a mobile data connectino when it happens
[1:06] <Bilby> AirForce590 link to project?
[1:06] * codestorm (~codestorm@cpe-75-83-205-183.socal.res.rr.com) has joined #raspberrypi
[1:06] <AirForce590> Bilby: Just a photo, it's a work in progress but I'll give you links when I'm done
[1:06] <AirForce590> to blogs
[1:06] <SpeakerToMeat> Bilby: You know asterisk has an extensions limit. He used an old machine so this should work on a pi well too, well he virtualized with OpenVZ which is a VERY low system cost virtualization as it's not hardware virtualization. set one asterisk pbx on each instance and connected them with the asterisk internal bus protocol
[1:06] <Bilby> Coolio
[1:07] <SpeakerToMeat> Bilby: He could manage a couple thousand extensions with a simple machine
[1:07] <Bilby> Hah nice
[1:07] <Criggie> transcoding would be the limiter
[1:07] <Bilby> Do yuu remember what the extension limit is?
[1:07] <Criggie> if you ahve to transcode, it'll be much lower
[1:07] <Bilby> Iirc i've seen some big asterix boxes
[1:07] <SpeakerToMeat> Yes transcoding would be killer. but generally in a single location you want to avoid transcoding anyhow as you can control the codec environment end to end.
[1:07] <SpeakerToMeat> it's the outgoing stuff that can kill you
[1:08] <SpeakerToMeat> Bilby: 250 or 255 I think
[1:08] <Bilby> We have our "phone system" on a Pi right now. Started on a B which was a bit laggy, went to a 2, it's amazing
[1:08] <ali1234> SpeakerToMeat: consulting the schematic, the analog audio out is on GPIO40 and GPIO45
[1:09] <Bilby> eheh, i don't think that'll be a problem speaker. Our biggest client at the moment has less than 100 extensions iirc
[1:09] <Bilby> they're using a samsung voip system which has been okayish
[1:09] <ali1234> see https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2835/BCM2835-ARM-Peripherals.pdf page 102
[1:09] <SpeakerToMeat> Bilby: What do you use for an FXO (to convert pots to voip)?
[1:09] <ali1234> and https://www.raspberrypi.org/documentation/hardware/raspberrypi/schematics/Raspberry-Pi-Rev-2.1-Model-AB-Schematics.pdf page 2
[1:10] <SpeakerToMeat> ali1234: So, disabling the gpios would effectively kill sound?
[1:10] <Bilby> for the Pi just a sip trunk provider
[1:10] <SpeakerToMeat> ali1234: I'll check that, thank you so very much
[1:10] <ali1234> yes, just change the function mode
[1:10] <SpeakerToMeat> ali1234: is tristated out a valid mode for the gpios on the bcm?
[1:10] <ali1234> you can do that by using /dev/mem to write directly into the special function registers
[1:10] <Bilby> actually i think we're technically using skype right now haha
[1:11] <ali1234> you probably don't want to tristate them unless you like loud popping noises
[1:11] <SpeakerToMeat> ali1234: Can't use python-rpi-gpios for that I guess
[1:11] <SpeakerToMeat> ali1234: Eh... true.
[1:11] * codestorm (~codestorm@cpe-75-83-205-183.socal.res.rr.com) Quit (Ping timeout: 256 seconds)
[1:11] <ali1234> you can use anything you want, but i have found that libraries like those are too clever for their own good
[1:11] <ali1234> and if you change the function register it "helpfully" turns off audio completely for you
[1:11] <ali1234> and then you can't turn it on again
[1:11] <SpeakerToMeat> Bilby: Be happy you use sip and never had to fight h232. I still have nightmares
[1:11] <ali1234> so i prefer to hit the hardware directly
[1:12] <SpeakerToMeat> ali1234: Makes sense
[1:12] <Bilby> I have a meeting in a couple of weeks with a client who we're going to pitch a Pi-based phone system to. Conveniantly their fax machine just died and i moved them to an efax service :D
[1:12] <SpeakerToMeat> ali1234: Should only be a couple of lines of c to do it anyhow
[1:12] <ali1234> right
[1:12] <ali1234> all the registers you need are in the pdf
[1:12] <Bilby> they'd still need one POTS line for the alarm / fire system but everything else could easily be done with skype
[1:12] <SpeakerToMeat> Bilby: Good, fax is always one of the biggest headaches when moving voip
[1:12] <Bilby> ikr
[1:12] <SpeakerToMeat> ali1234: I'll check, thank you
[1:13] <Bilby> they didn't want to move to a monthly fee but the person who does 90% of the office work was like THIS IS AMAZING WHY DID WE NOT DO THIS BEFORE
[1:13] * ozzzy won't give up his land line
[1:13] <ali1234> here is an example using /dev/mem to change a register value: http://paste.debian.net/167560/
[1:13] <Bilby> ozzzy i'll probably get a landline when we have kids, but i've been cell-only since i got a phone
[1:13] <ozzzy> I don't have a cell
[1:13] <SpeakerToMeat> Bilby: Btw since you went with rise, how do you handle the lack of hardware accel? or it doesn't matter since you use slow changing pictures?
[1:13] <Bilby> acutally i'm only on my second phone number ever haha...
[1:14] <Bilby> SpeakerToMeat it's essentially a static display page that just refreshes every 10 minutes or so
[1:14] <SpeakerToMeat> Bilby: My biggest fear about doign dig sig with the pi (I am thinkign on doing my own software) is flash.
[1:14] <Bilby> the animations were way dissapointing, it's not really good for that on the Pi 1. might be better on the Pi 2
[1:14] * c00ljs (~c00ljs@177.142.74.227) has joined #raspberrypi
[1:14] <Bilby> yeah flash no bueno
[1:14] <AirForce590> Bilby: Here, http://imgur.com/phflkMY http://imgur.com/M4lVFTz http://imgur.com/cvND3TT This is a Raspberry Pi robot I am building to help teach kids to code. It has a pantilt mount, two standard servos, and a Whippersnapper chassis from Actobotics. The drive motors are not wired up yet (waiting on L293d's) and I don't have a full battery solut
[1:14] <AirForce590> ion yet, but I got everything you see here (except for the webcam) for free, because ServoCity and MCM Electronics were more than happy to sponsor a 14yr old roboticist.
[1:14] <SpeakerToMeat> flash animations is a marvelous option to offer to a client. and a steaming pile of code.
[1:14] <Bilby> their built-in features work pretty well
[1:14] <AirForce590> Sorry for the long msg
[1:15] <ali1234> SpeakerToMeat: i used to work in digital signage and everyone wanted to send us flash animations
[1:15] <ali1234> i had to convert them to mpeg2 with a screen recorder
[1:15] <ali1234> it was really bad
[1:15] <Bilby> AirForce590 that's really cool man, nice work!
[1:15] <SpeakerToMeat> ali1234: Yes.
[1:16] <AirForce590> Bilby: It runs wifi in adhoc and has an instance of mjpg streamer that runs on startup for ssh programming
[1:16] <Bilby> a long time ago in a galexy far far away I had an RC truck with a PTZ camera on it for pulling long network cables through drop ceilings. it worked really well actually :D
[1:16] <Bilby> ah nice
[1:16] <AirForce590> Bilby: awesome!
[1:16] <SpeakerToMeat> ali1234: Personally you want my oppinion? I HATE flash for digital signage, because run time interpretation can be variable, much more variable than video... I recently sat at a bank with windows based flash based dig sig, and there was an error on the file or engine and half the figures inthe animation where missing.
[1:16] <SpeakerToMeat> ali1234: And half the text.
[1:16] * exobuzz (~xbuzz@2001:470:1f09:1970:d94f:3b2a:24d6:2caf) has joined #raspberrypi
[1:16] <ali1234> yes, absolutely
[1:16] <SpeakerToMeat> ali1234: With video, it either works, or does not work, you rarely get half results (unless you start pushing the hardware boundaries with bitrate)
[1:17] <SpeakerToMeat> I preffer a clean "oops" screen than a tortured half animation asking for mercy
[1:17] <ali1234> indeed. although video players are a lot better these days with the h264 and what not
[1:17] <Sonny_Jim> SpeakerToMeat: You are trying to mute audio on 4 Pi's at once, correct?
[1:17] <Bilby> If you can pre-render the animations into video you have more optiosn including the binaryemotions.com software which is very very nice
[1:17] <ali1234> mpeg2 hardware decoders were very fussy
[1:17] <SpeakerToMeat> Sonny_Jim: Drop it, please.
[1:17] <Bilby> we use that at another place that just needed one stand-alone unit
[1:17] <AirForce590> Bilby: What should I do for batteries? Apparently AAs don't agree with the Pi, so I was thinking of going this route. https://www.adafruit.com/products/1944
[1:18] <AirForce590> I want to power the motors and pi off the same supply for compactness
[1:18] <Bilby> Yeah LiPos are going to be the most power efficient
[1:18] <SpeakerToMeat> ali1234: WOuld you enlighten my ignorance please? these gpios used for the audio, they're dual function on the chip, like the spi/uart gpios are? or is the chip basically "bitbanging" the audio out?
[1:18] <AirForce590> Bilby: My main concern is output current
[1:18] <ali1234> SpeakerToMeat: they are multifunction yes
[1:19] <ali1234> and the analog audio is generated using the PWM hardware
[1:19] <ali1234> so one step up from bitbanging
[1:19] <Bilby> you might get something that can runn off of the 7.2v pack more common in RC.
[1:19] <ali1234> it is really very poor quality
[1:19] <SpeakerToMeat> ali1234: So just changing function should disable them as audio out. will the kernel driver or a direct user like omx notice?
[1:19] <SpeakerToMeat> ali1234: Ugh analog audio is pwm.. I see.
[1:19] * c00ljs (~c00ljs@177.142.74.227) Quit (Ping timeout: 256 seconds)
[1:19] <AirForce590> Bilby: But, the chassis is kind of small, and I don't know how to power the pi off that
[1:19] <SpeakerToMeat> I wish I could've used hdmi audio for this
[1:19] <ali1234> right. changing the function will stop the audio getting out
[1:20] <SpeakerToMeat> But the projectors the artist got do not have audio out
[1:20] <ali1234> nothing will notice. the PWM hardware can be redirected to other pins - even more than one pin at the same time
[1:20] <ali1234> (or none)
[1:20] <Bilby> AirForce590, do you haev yuor motor drivers yet? what voltage do you need?
[1:20] * AndrevS (~andrevs@2001:980:7901:1:3ea9:f4ff:fe63:9784) Quit (Quit: umount /dev/irc)
[1:21] <Sonny_Jim> SpeakerToMeat: It's a valid question and it'll help others with your problem. You need to be able to disable sound on 4 Pis at once, controlled by a master Pi, right?
[1:21] <SpeakerToMeat> ali1234: So there's a single PWM engine in the chip? would the PWM on gpio18 affect audio production?
[1:21] <SpeakerToMeat> Sonny_Jim: Yes.
[1:21] <AirForce590> Bilby: no, but I ordered the L293d's. I will need two to drive four motors, so I think I'll need ~6v
[1:22] <ali1234> SpeakerToMeat: yes, it would - if you put pin 18 to PWM mode you get audio out of it
[1:22] <ali1234> merely doing this does not affect the audio out
[1:22] <ali1234> but you cannot use the PWM for PWM *and* audio
[1:22] <Bilby> the chip itself will handle 4.5 - 36V
[1:23] <SpeakerToMeat> ali1234: Very interesting
[1:23] <Bilby> did you buy just the chips or are they on a board?
[1:23] <AirForce590> Bilby: chips only, I like to work that way. Will have breadboard
[1:23] * bortzmeyer (~stephane@2a01:e35:8bd9:8bb0:21e:8cff:fe76:29b6) Quit (Ping timeout: 272 seconds)
[1:23] <SpeakerToMeat> ali1234: Well I don't foresee a need for this, but worst case scenario it should be possible to emulate the PWM hardware with another gpio in software form if necessary
[1:23] <Bilby> you certainly learn more that way :D
[1:23] <Bilby> what do the motors need for voltage?
[1:24] <AirForce590> Bilby: lets go into private msg if you don't mind
[1:24] <SpeakerToMeat> AirForce590: Will you be driving the motors directly from the gpios?
[1:24] <ali1234> yes, one of the gpio libraries can already do that
[1:24] <AirForce590> actual;ly no sry
[1:24] <AirForce590> SpeakerToMeat: absolutely not!
[1:24] <AirForce590> damgae galore
[1:24] <AirForce590> damage
[1:24] <SpeakerToMeat> AirForce590: I've done this with microcontrollers and not a pi, but in general that is not a good idea. Even small motors can be outside the current max of the gpio, and worse if you have physical force on them
[1:25] <SpeakerToMeat> yeah
[1:25] <AirForce590> Bilby: I've been able to drive them off 5-6v
[1:25] <SpeakerToMeat> AirForce590: Are they steppers, servo, or dc motors?
[1:25] <SpeakerToMeat> Sigh this process is almost finished. I can almost go home
[1:26] <AirForce590> SpeakerToMeat: Standard 2wire dc, and as stated before I will be using l293d chips from TI, datasheet here http://www.ti.com/lit/ds/symlink/l293.pdf
[1:26] <Bilby> If 7.4v is within their power constraints, you can use two 3.7v cells in series to power them easily
[1:26] * lee (~lee@loathe.ms) has joined #raspberrypi
[1:26] <Bilby> build / buy a buck converter or other voltage converter to knock it down to 5v for the Pi
[1:26] <SpeakerToMeat> AirForce590: Ah very nice
[1:26] <SpeakerToMeat> AirForce590: Sorry I missed that
[1:27] <AirForce590> Bilby: alright
[1:27] * DLSteve (~DLSteve@c-73-7-226-217.hsd1.ga.comcast.net) Quit (Quit: Leaving)
[1:27] * SpeakerToMeat weeps
[1:28] <SpeakerToMeat> I just lost 3 hours of work
[1:28] <Bilby> :O :(
[1:28] <SpeakerToMeat> And added 6 hours more of work to my queue
[1:28] <Bilby> AirForce590 i'm using a low-dropout voltage regulator to go from 5V to 3.3V for another chip, you can certainly use one to get from 7.4V to 5. That's the easiest solution but it's power-wasteful
[1:28] * SpeakerToMeat whimpers
[1:28] <AirForce590> SpeakerToMeat: what? why
[1:29] <SpeakerToMeat> AirForce590: Dad made a mistake compressing assets for a digital cinema movie
[1:29] <AirForce590> Bilby: powerboost 500c sounds like a much easier option
[1:29] <SpeakerToMeat> AirForce590: I need to rebuild the whole set, and lost all the time making a disc.
[1:29] * bortzmeyer (~stephane@2a01:e35:8bd9:8bb0:21e:8cff:fe76:29b6) has joined #raspberrypi
[1:29] <Bilby> AirForce590 it's ready out of the box but i don't know if it's going to push your motors
[1:29] <AirForce590> SpeakerToMeat: darn
[1:30] <AirForce590> Bilby: up to 2A output
[1:30] <Bilby> Well... i had a larger RC truck that was designed for power, so needs are different here and there, but those motors would pull up to 6 or 8A each I believe
[1:31] <AirForce590> No, I powered them from AAs
[1:31] <SpeakerToMeat> AAs wont last much with that kind of draw
[1:31] <Bilby> Yeah I just looked at the images again and those are more like micro motors, so you'll probably be okay-ish
[1:31] <SpeakerToMeat> Wait the draw is not actually 2A is it?
[1:31] <AirForce590> SpeakerToMeat: just to test
[1:31] <Bilby> you might try powering them at 5V and testing with an Ammeter for current draw
[1:31] <SpeakerToMeat> Ok
[1:32] <AirForce590> SpeakerToMeat: The powerboost has a limit of 2a draw
[1:32] <AirForce590> Bilby: can I use a multimeter
[1:32] <Bilby> because you have Pi, camera, wifi, motor controller and motors to push with that 2A
[1:32] <Bilby> yes
[1:32] <Bilby> if you have one with an amperage selection
[1:32] <AirForce590> ok
[1:32] <AirForce590> hold on
[1:32] <ali1234> so use two?
[1:33] <Bilby> Yet another reason i love the Pi, it causes so many interesting conversations. everything from EE theory to kernel, os, parser design, a/v, you name it
[1:33] * Izaya (~Izaya@unaffiliated/izaya) has left #raspberrypi
[1:33] <SpeakerToMeat> AirForce590: Most multimeters will have special input to go over 100 or 200 mA
[1:33] <SpeakerToMeat> AirForce590: So be sure to connect the leads to and use the right input
[1:33] <ali1234> the biggest problem you will have is dealing with inrush current
[1:33] <SpeakerToMeat> Unless you have a shunt
[1:33] <AirForce590> SpeakerToMeat: alright
[1:34] <Bilby> time to pull out the manual haha
[1:34] <ali1234> it will go over 1A per motor easily, even for tiny ones
[1:34] <ali1234> it can be enough to trip battery protection
[1:34] <SpeakerToMeat> ali1234: And it's fun if you phisically block them from moving
[1:34] <AirForce590> hold on, testing
[1:34] <ali1234> inrush current is equivalent - motors aren't moving when you start them up
[1:35] <SpeakerToMeat> ali1234: Ah true
[1:37] <Bilby> AirForce590, as comparison, it looks like regulating down is going to be easy and cheap. http://www.digikey.com/product-detail/en/L78S05CV/497-1468-5-ND/585989
[1:37] <SpeakerToMeat> AirForce590: At least I use linux to work
[1:37] * gbaman (~gbaman@91.85.73.253) Quit (Ping timeout: 276 seconds)
[1:38] <Bilby> For 76 cents you can even buy a few spares...
[1:38] <SpeakerToMeat> AirForce590: I'm finishing a looong bash script to do the recompressing job for me, I'll screen it and go home
[1:38] <AirForce590> OH MY GOF
[1:38] <AirForce590> GOD
[1:38] <AirForce590> Short circuit sparks everywhere jesus
[1:38] <Bilby> :O
[1:38] <SpeakerToMeat> Yay
[1:38] <Bilby> careful mate
[1:38] <ali1234> no battery protection?
[1:38] <day> is it normal that a fresh ubuntu core installation fails too 'adduser' ? xD
[1:38] <AirForce590> nvr mind
[1:38] <Bilby> everybody learns! :P
[1:38] <SpeakerToMeat> Always the funnest part of electronics. But it's very sad when you let out the magic smoke
[1:39] <Bilby> ugh
[1:39] <day> this is glorious
[1:39] <Bilby> I don't know how many chips i've fried by flipping them backwards
[1:39] <AirForce590> ali1234: one of my multimeter leads slipped, but no damage
[1:39] <Bilby> I'm the worst
[1:39] <SpeakerToMeat> AirForce590: Yeah when workign with high current and/or high voltage you need steady hands
[1:39] <ali1234> Bilby: i got five 3.7v to 5v converters for $5
[1:39] <day> you gotta be out of your mind to use ubuntu for anything serious
[1:39] <ali1234> they don't have to be expensive
[1:39] <Bilby> especially TO-220
[1:39] <SpeakerToMeat> Bilby: Friend of mine used to like shoving 12v electrolytic caps into power strips and turning them on
[1:39] * djhworld (~djhworld@176.250.108.20) Quit (Ping timeout: 276 seconds)
[1:40] * kayatwork (~kayfox@orca.zerda.net) Quit (Ping timeout: 272 seconds)
[1:40] <SpeakerToMeat> Bilby: Until the metal casing of one was left embedded in a door frame. he quit it then
[1:40] <Bilby> ali1234 true, I typically default to having more power to push motors and such haha
[1:40] <Bilby> SpeakerToMeat lol! That sounds... entertaining
[1:40] <Bilby> Ugh, i need to get done with work today
[1:41] <Bilby> i finally bought the leaf switch i need for a door sensor
[1:41] <Bilby> i want to run to the hardware store and get a couple brackets to get it mounted
[1:41] <AirForce590> alright
[1:42] <AirForce590> 150ma under no load
[1:42] <AirForce590> per motor
[1:42] <SpeakerToMeat> AirForce590: You will not notice the inrush on a normal multimeter. It's too short
[1:42] <Bilby> So that's a base of 600ma. Did you measure under load at all?
[1:42] <AirForce590> no
[1:43] <SpeakerToMeat> Stopping them with your hand will give you something close but not exact to inrush
[1:43] <AirForce590> well, it's more than 200ma, that's as high as my multi can go
[1:43] <Bilby> even with no-load you're looking at only having ~ 1.2A available for the rest of it. Cutting it very close
[1:43] <AirForce590> stopping them with hand
[1:43] <SpeakerToMeat> AirForce590: You multi has no special "hole" for over 200 mA?
[1:43] <Bilby> Are you using a B or B+?
[1:43] <AirForce590> nope
[1:43] <AirForce590> b2
[1:44] <SpeakerToMeat> Ok, sorry
[1:44] <Bilby> ah okay
[1:44] <AirForce590> sponsored
[1:44] <SpeakerToMeat> you could use a shunt but you need to buy one. making one is not so easy, calculations wise
[1:44] <Bilby> Basic multimeters are basic. I like buying secondhand for that reason but if you need to buy them for an entire club or class that's less possible
[1:45] <SpeakerToMeat> Bilby: My multimeter is old but I care for it with my life. No transistor socket, but it measures a lot, including a 20A current measuring socket. And it has RS232 output
[1:45] * gbaman (~gbaman@91.85.73.253) has joined #raspberrypi
[1:45] <Bilby> Oh nice
[1:45] <SpeakerToMeat> Bilby: When I was fixing my fridge, I hooked it to the defroster elements, and to my laptop, and left it logging data points over 24 hour to check the cycle
[1:45] * McSleep is now known as McBride36
[1:45] <Bilby> I have a super old Micronta
[1:45] <Bilby> which i literally pulled out of a trash pile
[1:46] <SpeakerToMeat> wow nice
[1:46] <Bilby> and have used for the last 20 years
[1:46] <SpeakerToMeat> Ok, I've started my long ass script, to do my work for the next couple hours.
[1:46] <SpeakerToMeat> Wanna see? :D
[1:46] <Bilby> AirForce590, Give the Pi 750ma, that leaves you with 1350ma to work with. How much does the camera draw?
[1:46] <Bilby> haha
[1:47] <AirForce590> Bilby: idk, hold on
[1:47] * andersoldahl (~andersold@2601:6:7580:1cd:15ac:2af8:6abf:b39f) has joined #raspberrypi
[1:47] <Bilby> i don't want to see your ass, Speaker ;)
[1:47] <AirForce590> SpeakerToMeat: pastebin
[1:47] <SpeakerToMeat> http://hastebin.com/nehicaqabu.mel
[1:48] <Bilby> well, there's a lot of arguments in that command
[1:48] <SpeakerToMeat> yeah :D
[1:48] * ppq (~ppq@unaffiliated/ppq) Quit (Quit: gn8)
[1:48] <Bilby> I am not that l33t
[1:48] * Bilby goes back to smashing things with his fists
[1:48] <AirForce590> bilby: runs on usb port fine now
[1:48] <SpeakerToMeat> It'll basically unwrap the image and sound for six reels. Repack them, and make a DCP (Digital Cinema Package)
[1:49] * fengling (~fengling@60.10.97.119) has joined #raspberrypi
[1:49] <Bilby> okay, that was the gist I saw
[1:49] <AirForce590> Son, has anyone ever informed you of handbrake
[1:49] <AirForce590> SpeakerToMeat
[1:49] <AirForce590> jk
[1:49] <Bilby> AirForce590 i figured it did. Let's go ahead and give it the last 350ma, that leaves you with 1000ma for motor and controller
[1:50] <AirForce590> yeah
[1:50] <AirForce590> oh crap
[1:50] * Macuser (~textual@unaffiliated/macuser) has joined #raspberrypi
[1:50] <AirForce590> servos
[1:50] <Bilby> or ~ 250 / motor. It feels pretty close, if it's drawing 150 freewheeling
[1:50] <Bilby> oh yes, servos
[1:50] <Bilby> aaaand there goes your power budget
[1:50] <SpeakerToMeat> AirForce590: Handbrake doesn't work for digital cinema ;) and it's a confortable ffmpeg frontend anyhow
[1:50] <Bilby> now you know why NASA engineers are rock stars in the eingeering world :P
[1:50] <AirForce590> Bilby: how shall I do this
[1:51] <SpeakerToMeat> Well he can always thrown in more batteries in parallel ;)
[1:51] * thescatman (~thescatma@unaffiliated/thescatman) Quit (Ping timeout: 240 seconds)
[1:51] <Bilby> or a second converter
[1:51] <SpeakerToMeat> Bilby: I adored the power consumption sequence building part of apollo 13.
[1:51] * kayatwork (~kayfox@orca.zerda.net) has joined #raspberrypi
[1:51] <ali1234> https://plus.google.com/+AlistairBuxton/posts/fBURQYMiDuu
[1:51] <SpeakerToMeat> Bilby: The movie. That and the "They have to fit this filter into this hole, and this is all there is on the ship" are my favorite parts of the movie
[1:51] <ali1234> this uses about 500mA with everything on except the motors
[1:52] <Bilby> SpeakerToMeat I know!
[1:52] <ali1234> and about 2A when the motors are on
[1:52] * g994 (~g994@5.189.144.219) Quit (Remote host closed the connection)
[1:52] <AirForce590> ok
[1:52] <ali1234> peaking at about 4A if all four motors are stalled
[1:52] <AirForce590> yes...
[1:52] <SpeakerToMeat> ali1234: Are you doing video analisis processing on the pi?
[1:52] <ali1234> no
[1:53] <ali1234> first-person video remote control
[1:53] <SpeakerToMeat> Ok
[1:53] * g994 (~g994@vmd7962.contabo.host) has joined #raspberrypi
[1:53] <SpeakerToMeat> Wifi comms?
[1:53] <ozzzy> SpeakerToMeat, generally not
[1:53] <ozzzy> sorry... scroll was stuck... disregard
[1:53] <ali1234> yes. using gstreamer and rtsp the latency is about 0.3 seconds
[1:54] <SpeakerToMeat> nice
[1:54] <SpeakerToMeat> self made control protocol?
[1:54] <AirForce590> ali1234: I use mjpg
[1:54] <AirForce590> stremaer
[1:54] <Bilby> My day is done in 60 seconds. AirForce590 good luck on your project and post back when you make progress :) If you side-ping me when I'm gone I'll reply when i get back
[1:55] <AirForce590> ok
[1:55] * bizarro_1 (~bizarro_1@104.Red-88-14-187.dynamicIP.rima-tde.net) Quit (Read error: Connection reset by peer)
[1:55] <ali1234> SpeakerToMeat: i just send a UDP packet with the control inputs
[1:55] <ali1234> the video is standard h264 over rtsp
[1:55] <SpeakerToMeat> ali1234: I guessed so. are you using midi type (move on, move off) or gerber type (move for x steps/seconds) commands?
[1:56] <AirForce590> ali1234: how can I get a 3a battery pack
[1:56] <AirForce590> and power the pi and motors with it
[1:56] <SpeakerToMeat> AirForce590: You'lld need the pack AND regulator
[1:56] * bizarro_1 (~bizarro_1@104.Red-88-14-187.dynamicIP.rima-tde.net) has joined #raspberrypi
[1:56] <AirForce590> SpeakerToMeat: yes, but I need suggestions
[1:56] * riq_ (~riq_@c-50-161-74-230.hsd1.ca.comcast.net) has joined #raspberrypi
[1:56] <SpeakerToMeat> AirForce590: Now remember power sources sum current capacity when put in parallel
[1:57] <SpeakerToMeat> As long as both have charge :D
[1:57] * ozzzy runs his stuff from marine deep-cycle batteries
[1:57] <ali1234> i'm using instantaneous type. i send four short signed ints which are the current speed of each motor
[1:57] <SpeakerToMeat> ozzzy: holy
[1:57] <AirForce590> ozzzy: fricking
[1:57] * Macuser (~textual@unaffiliated/macuser) Quit (Quit: My MacBook Pro has gone to sleep. ZZZzzz…)
[1:57] <AirForce590> ozzzy: what even
[1:57] <ozzzy> LOL
[1:57] <ali1234> currently if the control program crashes it will just keep driving with whatever the last command was
[1:57] * cameronfr (~cameronfr@156.30.134.27.ap.yournet.ne.jp) has joined #raspberrypi
[1:57] <SpeakerToMeat> ali1234: Yes.
[1:58] <ozzzy> I have those and some deep-cycle gelcells
[1:58] <SpeakerToMeat> ali1234: Nice body btw
[1:58] <SpeakerToMeat> ali1234: Pretty tightly built.... I really miss my legos
[1:58] <ali1234> i will probably keep it this way because it doesn't matter if packets are out of order - but i'll add a sequence number and a timeout so it stops if no command received for x msec
[1:58] <AirForce590> ali1234: SLAM BAM http://www.adafruit.com/product/2030
[1:59] <shiftplusone> okay, odd conversation to randomly glance at "nice body, bro" >_<
[1:59] <AirForce590> 4A internal tolerance
[1:59] <AirForce590> Now I need a battery
[1:59] <AirForce590> Lipos or liions
[1:59] <ali1234> there is no difference -_-
[2:00] <AirForce590> well
[2:00] <SpeakerToMeat> ali1234: Mind resharing the tutorial on changing regs on /proc/mem? lost the link up in the noise, kept only the schematic, sorry :(
[2:00] <SpeakerToMeat> ali1234: Well.... liions tolerate being punctured better
[2:01] * g994 (~g994@vmd7962.contabo.host) Quit (Remote host closed the connection)
[2:01] <ali1234> http://paste.debian.net/167560/
[2:01] <SpeakerToMeat> ali1234: Thanks
[2:01] <SpeakerToMeat> shiftplusone: Hey, you need to tell your bros when they have nice bods
[2:01] <ali1234> that is actually changing a register very near the one you need
[2:01] <ali1234> it switches gpio 18 to PWM mode
[2:02] <ali1234> you want to set gpio 40/45 to not-PWM mode
[2:02] <shiftplusone> SpeakerToMeat, true, true.
[2:02] <SpeakerToMeat> ali1234: Is there any docs on this so I dont screw up?
[2:03] <ali1234> https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2835/BCM2835-ARM-Peripherals.pdf
[2:03] * gbaman (~gbaman@91.85.73.253) Quit (Remote host closed the connection)
[2:03] <ali1234> section 6
[2:03] <SpeakerToMeat> Thanks
[2:03] <ali1234> especially page 90-102
[2:03] <shiftplusone> Gadgetoid, are you there yet?
[2:04] <SpeakerToMeat> Bingo with all addresses and options
[2:04] <SpeakerToMeat> thanks
[2:04] <SpeakerToMeat> And with that, I'm gone
[2:04] <ali1234> note those addresses are different to what you need
[2:04] <SpeakerToMeat> ok
[2:04] <ali1234> you have to subtract 0x7e000000
[2:05] <ali1234> and also on the pi2 it is different, if you have one of those
[2:05] <ali1234> wait, subtract 0x5e000000
[2:05] <ali1234> or something
[2:05] <ali1234> 0x7e200000 becomes 0x20200000 when you map it with /dev/mem
[2:05] * codestorm (~codestorm@cpe-75-83-205-183.socal.res.rr.com) has joined #raspberrypi
[2:06] <Xark> ali1234: Is there an API to get the address (or similar)?
[2:06] <ali1234> not really no
[2:06] <ali1234> just determine which pi version you are running on and then consult a huge lookup table
[2:07] <Xark> ali1234: So you just have to "detect" Pi2 and do the offset.
[2:07] <ali1234> yes
[2:07] * Aboba (~Bob@S010614cc209fc3d3.gv.shawcable.net) Quit (Ping timeout: 272 seconds)
[2:07] <ali1234> there are many ways to do that including various files in /proc and /sys and you can do it by looking directly at the hardware registers too
[2:07] * gbaman (~gbaman@91.85.73.253) has joined #raspberrypi
[2:08] <Xark> ali1234: I see. Hardware regs sounds reliable.
[2:08] <ali1234> just check if the hardware exists at the memory addresses where you expect :)
[2:09] <ali1234> this is easier than you might think, because invalid addresses within a memory page belonging to a specific piece of hardware generate a specific identification value
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[2:21] <Xark> Cool. I suspect this is why a Python FPGA loader I have is failing (as is the makers support response). :)
[2:21] <Xark> It gets a segfault on RPi2
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[2:28] <hjf_> Bilby: do you play video on these screens? or just still images?
[2:29] <ozzzy> Xark, I blame the Python
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[2:56] <Xark> ozzzy: Heh. At least it will be easier to "hack". :)
[2:57] <ozzzy> yep
[2:57] * Ownix (sid11917@gateway/web/irccloud.com/x-scsltywwscbsqitb) has joined #raspberrypi
[2:58] <Ownix> hey guys, black screen and no audio when playing an .mkv on both Kodi and VLC in Raspbain. Pi 2.
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[3:03] <ozzzy> Ownix, I blame Obama
[3:04] <Ownix> Thanks Obama
[3:04] <ozzzy> does it work with mp4 or avi?
[3:04] <ozzzy> and other mkvs?
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[3:07] <Ownix> gonna download various stuff and test this now
[3:07] <Ownix> could be that file or that format
[3:08] <Ownix> maybe its a codec I have no license for
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[3:08] <ozzzy> mkv is a container... so check the codecs used
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[3:28] <AirForce590> Ownix: try redownloading vlc
[3:29] <Ownix> AirForce590: ? apt-get remove VLC && apt-get install vlc ?
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[3:37] <karlton> Ownix: make sure you have libmatroska
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[3:41] <Ownix> karlton: hmm that doesn't appear to be in the repo
[3:42] * lord4163 (~lord4163@78-68-207-39-no226.tbcn.telia.com) Quit (Ping timeout: 255 seconds)
[3:43] <Ownix> karlton: it's libmatroska5 looks like I already got it
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[3:45] <karlton> Ownix: Does omxplayer work?
[3:48] * EastLight (~n@90.213.185.248) Quit ()
[3:48] <Ownix> karlton: yes it does!
[3:48] <Ownix> ... Hmm so what does this tell us??
[3:48] <karlton> I have no idea about vlc :/
[3:49] <Ownix> Kodi cant play it either. OMX said it was using omx-h264 video codec, idk if that makes any sort of difference
[3:49] <Ownix> I wonder if theres a big zip of sample video files i can download
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[3:50] <Ownix> Well theres this http://www.clipcanvas.com/a/video-clip-downloads/
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[3:51] <karlton> Doesn't kodi use omxplayer?
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[3:54] <Ownix> I am not sure what it used
[3:54] <Ownix> Uses
[3:55] <Ownix> Yeah vlc doesn't want to play jack
[3:55] <Ownix> I thought vlc is the go to video player on Linux
[3:57] <karlton> mplayer is but it does not work very well on the rpi because of the lack of hardware acceleration
[3:57] <ring0> mpv > mplayer ;)
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[3:59] <karlton> I don't think either will work except maybe for the rpi 2
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[4:00] <Xark> On RPi omxplayer. :)
[4:00] <Xark> karlton: No, kind of works on RPi2, but not full FPS.
[4:00] <Ownix> Hmm well this omxplayer seems to work fantastically
[4:01] <Xark> Kodi probably uses the same API as omxplayer internally.
[4:01] <Xark> Ownix: Indeed. :)
[4:01] <Ownix> Xark: my videos won't play off there though
[4:01] <karlton> Xark: k, good to know
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[4:04] <Ownix> I hate when i install something from apt and a hundred dependencies come with it then you remove and it leaves all the deps behind
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[4:05] <Ownix> I understand why it does that but I don't like that.
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[4:08] <karlton> Ownix: I don't use that package manager but I am sure it has a command to remove unneeded dependencies
[4:09] <Ownix> karlton: what do you use?
[4:11] <karlton> I either use portage or pacman but non of those are for debian based distros
[4:13] <Ownix> karlton: ah you're probably not using your pi primarily as an HTPC then
[4:13] <ring0> Ownix, apt-get autoremove (--purge)
[4:15] <karlton> Ownix: might look at this also: https://www.debian-administration.org/article/Removing_unnecessary_packages_with_deborphan
[4:16] <karlton> bleh, that page is a decade old though ;)
[4:17] <ali1234> apt-get autoremove?
[4:18] <ring0> yes, removes all unneeded packages installed as dependencies
[4:18] <Ownix> That seemed to work
[4:18] <Ownix> A little scared of purge though
[4:19] <ring0> purge just removes config files, too
[4:19] <Ownix> In case I install two packages and they both share the a dep and I autoremove one and it kills the shared dep and flushes the config files then I'm in a little trouble
[4:19] <ali1234> apt is smarter than that
[4:20] <ali1234> (usually)
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[4:23] <Ownix> Lol
[4:24] <Ownix> Well it looks like I can manually specify what player I want Kodi to use
[4:24] <Ownix> But it's still odd Kodi isn't using omxplayer
[4:25] <karlton> it is has to be built with ./configure..--with-platform=raspberry-pi --enable-player=omxplayer
[4:27] <Ownix> Wouldn't that take 14 years to build on the pi?
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[4:28] <karlton> >12 hours :)
[4:29] <Ownix> I gotta learn how to cross compile
[4:29] <Ownix> Make another computer do all the work
[4:30] <exo-squad> ownix, i used to do that in a VM on ubuntu
[4:30] <exo-squad> compiling on the original pi took forever..
[4:30] <Ownix> exo-squad: is it hard
[4:30] <Ownix> It still takes forever
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[4:30] <karlton> Ownix: if you're using a binary, I am sure whoever made it enabled omxplayer
[4:31] <karlton> I use gentoo and I can compile stuff and watch a movie at the same time
[4:31] <exo-squad> ownix, i got a pi2 :D
[4:31] <Ownix> exo-squad: same here
[4:31] <exo-squad> instead of like, 12 hours, it takes 3
[4:32] <Ownix> karlton: I just got Kodi from apt
[4:32] <Ownix> One thing that isn't fun is the black screen on exit
[4:32] <Ownix> exo-squad: they are getting faster. Still only paying $35 lol
[4:32] <exo-squad> yeah. i love the rpi and the whole thing
[4:33] <exo-squad> the community, the projects, the makers,
[4:33] <exo-squad> its all awesome
[4:34] <karlton> exo-squad: Yeah, I used qemu to make the image for the rpi
[4:35] <exo-squad> karlton, i used that to test stuff
[4:36] <xMopxShell> does the RasPi model B work with microSDHC cards?
[4:37] <exo-squad> yeah.
[4:37] <xMopxShell> Hmmm
[4:37] <xMopxShell> I bought some cards today but I can’t get the pi to boot off them
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[4:37] <xMopxShell> Just loops the pi logo / an rgb gradient
[4:38] <exo-squad> if it cant read the card it doesnt do anything
[4:38] <xMopxShell> well yeah
[4:41] <xMopxShell> i think this is just a bad brand…. “unirex"
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[4:44] <exo-squad> did you try formatting them with that sd formatter from the sd site?
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[4:46] <xMopxShell> exo-squad: im using this if thats what you mean: https://www.raspberrypi.org/documentation/installation/installing-images/windows.md
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[4:48] <exo-squad> https://www.sdcard.org/downloads/formatter_4/
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[4:49] <exo-squad> thats recommend that for any sd card problem
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[4:50] <xMopxShell> exo-squad: thanks, ill give that a shot
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[5:06] <xMopxShell> exo-squad: no luck after that. But i was using the snappy-ubuntu-core from the raspi downloads page. Rasbian works fine
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[5:41] <NedScott> I heard rumors that the Pi Foundation was finally about to release the LCD screen
[5:42] <NedScott> :D
[5:47] <shiftplusone> NedScott, that's not a rumour... we've been about to release it for like a year. =P
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[5:52] <NedScott> I mean, the rumor was that it was going to actually happen
[5:52] <NedScott> ;)
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[5:54] <shiftplusone> I hope so
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[8:15] <IsUp> hello everyone, i am unable to use RPi GPIO on python. Trying to blink a led but nothing happens and no errors. However, gpio write 25 1 works perfectly.
[8:17] <IsUp> I am using a new Pi 2 Model B Rev 1.1, just arrived
[8:17] <joey8> have you tried the old favorite - i think it is pin13 (had its own led)
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[8:18] <joey8> *has
[8:18] * beoldhin (~quetzal@a91-154-71-39.elisa-laajakaista.fi) Quit (Quit: WeeChat 1.1.1)
[8:18] <IsUp> joey8: no, what is this? i am a total newbie
[8:19] <IsUp> umm, enabled Device Tree and its working now
[8:19] <IsUp> strange
[8:19] <joey8> i am not sure, i may be mixing this up with an arduino but there is an on-board led that we can use. i think it is pin13 (not 100% sure)
[8:20] <joey8> ah ok good
[8:21] <IsUp> thanks
[8:21] <joey8> :�) you're welcome
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[8:34] <IsUp> joey8: which pins are available for led connections? http://pi.gadgetoid.com/pinout/pin37_gpio26 what is GPCLK0, PCM_CLK and stuff on GPIO pins?
[8:36] * amigojapan (~amigojapa@c101176.net11093.cablenet.ne.jp) Quit (Quit: amigojapan)
[8:38] <joey8> IsUp< you will have to google this. there is a little to learn yet.
[8:39] * leichtgewicht (~leichtgew@pd284edba.osaknt01.ap.so-net.ne.jp) Quit (Remote host closed the connection)
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[9:32] * IsUp (c39ba1b6@gateway/web/freenode/ip.195.155.161.182) Quit (Quit: Page closed)
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[9:33] <pigeta> hi all
[9:33] <diegoaguilar> hi pigeta
[9:33] <diegoaguilar> i like your nick
[9:33] <diegoaguilar> lol
[9:33] <pigeta> can i ask here for archlinux for raspberry?
[9:33] <pigeta> tnx
[9:33] <[Saint]> Nope.
[9:34] <pigeta> what channel?
[9:34] <skyroveRR> #archlinux.
[9:34] <pigeta> ok tnx
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[10:12] <IsUp> is that possible to run PiFM on Pi 2? Somehow, i can't get sound. Even no transmission at all.
[10:13] * Tach[Awayish] is now known as Tachyon`
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[10:23] <IsUp> I think Pi 2 is not compatible with older codes. Should i downgade to Model B Plus? Many tutorials / sources are using Pi 1
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[11:07] <Xark> IsUp: I could totally see faster RPi2 messing with "tuned" FM code.
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[11:10] * AbouEmre (~Thunderbi@ewimax2.ewimax.mw) Quit (Quit: AbouEmre)
[11:10] <SpeedEvil> Please note that the PIFM transmitter outputs just as much energy on the air-band - interfering with aircraft - as it does on FM in some cases.
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[11:14] * MINIMAN10000 (~MINIMAN10@c-71-227-128-41.hsd1.wa.comcast.net) Quit (Ping timeout: 256 seconds)
[11:14] <[Saint]> ...for all those aircraft flying 20~20m above your house, huh? ;)
[11:14] <[Saint]> *20~30m
[11:15] <[Saint]> While I see the point, if you're managing to broadcast with PiFM at a distance that affects commercial aircraft...well done.
[11:15] <[Saint]> You deserve congratulations.
[11:15] * kcj (~kcj@unaffiliated/kcj) Quit (Quit: Leaving)
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[11:19] <SpeedEvil> Interference happens at _MUCH_ longer ranges than coherent signals can be recieved.
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[11:21] * Albori (~Albori@67-43-245-206.fidnet.com) Quit (Ping timeout: 264 seconds)
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[11:24] <SpeedEvil> Also, ranges can be longer than you'd think on clear bands. I note that in another channel, we're doing >500km on 10mW at 433MHz - line of sight. (balloons)
[11:24] <[Saint]> Depending on the locale, for my own private broadcasts here, anyone else has to eat the interference and suck it up.
[11:24] * hyperair (~hyperair@ubuntu/member/hyperair) Quit (Ping timeout: 245 seconds)
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[11:26] <[Saint]> Otherwise you'd have the Radio Police jumping on every TOm, Dick and Harry with an in-car FM sender for ancient car stereos with no inputs.
[11:26] <[Saint]> If I use that, and it affects your equipment - big deal, get over it.
[11:26] <[Saint]> Long story short.
[11:31] <SpeedEvil> The in-car FM transmitters have filters. They output essentially no energy on the relevant band.
[11:31] <SpeedEvil> The Pi has no filter, it's purely squarewave, and outputs just as much on the 5th as the 3rd harmonic of the clock.
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[11:35] * ppq (~ppq@unaffiliated/ppq) Quit (Quit: nochmal kurz was testen *murmel*)
[11:41] <IsUp> i m totally aware of legal regulations since i have ham radio license. what should i do to PiFM work on Pi 2?
[11:41] * AbouEmre (~Thunderbi@196.216.8.138) Quit (Quit: AbouEmre)
[11:41] <[Saint]> Have it not be a Pi2.
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[11:41] * ShorTie snickers
[11:42] <IsUp> well i have time to return my pi 2. its just arrived
[11:43] <[Saint]> I haven't paid much attention to the Pi2, but I /think/ the way GPIO was handled and addressed internally changed.
[11:43] <IsUp> register addresses has changed on Pi 2 and i doubt about compability of other codes, not just PiFM
[11:43] <IsUp> and i am totally new to Pi
[11:43] <[Saint]> It should, in theory, just be a matter of brining the PiFM code up-to-date.
[11:45] <IsUp> [Saint]: yes but nobody cares about PiFM + i dont have skills to edit code
[11:45] <IsUp> [Saint]: best option is downgrade in my case
[11:46] <IsUp> and there is one more thing about "DMA", i dont know what its all about
[11:46] <[Saint]> Well, *you* care.
[11:46] <[Saint]> ...don't you?
[11:46] <Kemosabe> i care also
[11:46] <Kemosabe> seems like you're in the minority
[11:47] * x1337807x (~x1337807x@172.56.32.0) Quit (Quit: My MacBook Pro has gone to sleep. ZZZzzz…)
[11:47] <IsUp> one more thing that i was unable to blink the led with RPi.GPIO, wasted 5 hours. finally i have disabled/enabled Device Tree randomly and it started to work
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[11:54] <ShorTie> sounds like you didn't have a dtb loaded then
[11:54] * cccyRegeaneWolfe (~cccyRegea@210.23.18.203) has joined #raspberrypi
[11:57] <IsUp> ShorTie: i have disabled and re-enabled with raspi-config, started to working. others say its a known bug
[11:58] <IsUp> however, i am doing more research and there are lot of compability issues with Pi 2 at the moment. is this really changed that much from Pi to Pi 2?
[11:59] <ShorTie> just the off set, rest is preaty much the same except a fifferent chip
[12:00] * AbouEmre (~Thunderbi@196.216.8.132) Quit (Quit: AbouEmre)
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[12:01] * dreamon (~dreamon@unaffiliated/dreamon) Quit (Ping timeout: 265 seconds)
[12:04] <joey8> what is the voltage that we need to power a pi? is it 12v please
[12:04] <[Saint]> 5
[12:04] <skyroveRR> joey8: 4.75-5.25V.
[12:04] <[Saint]> 5V, I mean.
[12:04] <joey8> ah 5volts thanx guys
[12:05] <ppq> i wouldnt let it drop below 5 V
[12:06] <joey8> i am thinking of getting a 2amp supply - will this be ok as i am attaching a few bits to it? does it matter if i present, say, a 10amp supply? will it only take what is needed. thanx
[12:06] <[Saint]> 2A is fine.
[12:06] <joey8> [Saint]< thanx
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[12:07] <ppq> a 10 A power supply doesnt make much sense if you are powering only one pi with it. usb cables don't do 10 A
[12:07] <ppq> well, maybe briefly
[12:07] <joey8> ppq< yes - i was just wondering that. i heard a power supply will only give what is required
[12:09] <ppq> yes, since it is a voltage source, not a current source.
[12:10] * MrMobius (~Joey@c-68-45-16-225.hsd1.nj.comcast.net) has joined #raspberrypi
[12:10] <joey8> ppq< thanx for that. i have a rather large (# of devices) project looming and i have a space PC power supply that i thought i may use
[12:10] <joey8> *spare
[12:11] <ppq> joey8, PC PSUs usually dont have a very good 5 V rail
[12:11] <joey8> ppq< oh really? good as in... reliable or in... fluctuating volts
[12:12] * c00ljs (~c00ljs@177.142.74.227) Quit (Ping timeout: 256 seconds)
[12:12] <ppq> joey8, better read a chroma test report about your PSU, it shouldnt drop below 5 V at the load you're going to cause
[12:13] <joey8> ppq< ah ha ok, thanx for that bud.
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[12:13] <DoctorD90> shiftplusone: are you there??
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[12:16] <DoctorD90> i have a news 4u :) let me know when you come back
[12:16] * nid0 (nidO@82-69-13-250.dsl.in-addr.zen.co.uk) has joined #raspberrypi
[12:17] <ppq> joey8, yes, the ripple @ 5 V also shouldnt be too high. somebody said <50 mA for the raspi
[12:17] <joey8> ppq< thanx
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[12:19] <ShorTie> foundation recommends a 2.5amp supply
[12:19] <ShorTie> http://www.raspberrypi.org/help/faqs/#powerReqs
[12:21] <DoctorD90> shortie HOW?? O0 ....T_T ...my is 1A ~ ...sig
[12:21] <ShorTie> aslong as you don't really use the usb, 1a is ok
[12:22] <ShorTie> "though you may want to get a 2.5A (2500mA) if you want to use all 4 USB ports on the Model B without using an external powered USB hub."
[12:22] <ShorTie> or a hdd at all
[12:23] <DoctorD90> i use at moment only wifi dongle. but i'd like use a 2.5' hdd usb :P
[12:23] * Encrypt (~Chuck-nor@AMontsouris-553-1-58-159.w92-151.abo.wanadoo.fr) Quit (Quit: Quitte)
[12:24] * codestorm (~codestorm@cpe-75-83-205-183.socal.res.rr.com) Quit (Ping timeout: 256 seconds)
[12:27] <ShorTie> personally, i think you should not draw more then 75-80% of rated current out of a supply, when you start to get towards max you normally have problems with it keeping the voltage at the right level
[12:28] <ShorTie> and any extra inrush will exceed spec, thus causing posible failure/harm
[12:31] * AbouEmre (~Thunderbi@ewimax3.ewimax.mw) Quit (Quit: AbouEmre)
[12:31] <DoctorD90> yes shortie! i agree with you! but as a noob, i didnt mind(remember) that 2,5'usb hdd draw current that exceed 1amp :P and adding that now it doesnt starts(hdd). i still need to add in config file the spec to increase max amps from rpi's usb
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[12:59] <day> how can i change the partition size/table of a sdcard image_
[12:59] <day> ?
[13:00] * diegoaguilar (~diegoagui@187-163-193-24.static.axtel.net) Quit (Quit: Leaving)
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[13:02] * AbouEmre (~Thunderbi@196.216.8.143) Quit (Quit: AbouEmre)
[13:02] <ppq> day, you want to resize your rootfs? get a linux PC with a card reader and use gparted
[13:03] <ppq> or some live linux if you use windows
[13:04] * AbouEmre (~Thunderbi@196.216.8.135) has joined #raspberrypi
[13:04] <ppq> expanding can even be done online using raspi-config
[13:05] <day> ppq: i just found this http://elinux.org/RPi_Resize_Flash_Partitions#Manually_resizing_the_SD_card_on_Raspberry_Pi
[13:05] * GerhardSchr (~GerhardSc@unaffiliated/gerhardschr) has joined #raspberrypi
[13:05] <day> if it doesnt work it doesnt matter. still vanilla
[13:06] <day> looks good :)
[13:07] <ppq> using gparted is safer
[13:07] <ppq> but whatever floats your boat
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[14:13] <AirForce590> I am building a robot, and after several measurements with my ammeter and plenty of datasheets, I'm looking at a solid 3A to power it, and I need a USB port for power as well as breakouts. I would like to keep it mobile, are there any readymade solutions? This http://www.adafruit.com/product/2030 seems pretty good.
[14:14] <AirForce590> Sorry, I need 3A@5V
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[14:17] <ozzzy> http://goo.gl/ce0XkQ <--- 3A boost/buck
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[14:21] <AirForce590> ozzzy: http://www.amazon.com/Castle-Creations-Bec-Switching-Regulator/dp/B000MXAR12
[14:22] <cehteh> woah .. mighty overprized
[14:22] <ozzzy> you didn't say you wanted 10A
[14:23] <ozzzy> I use lots of the little SMPSs I posted... they work great
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[14:23] <cehteh> does it need 3A continous? or only peaks?
[14:25] <cehteh> http://www.amazon.de/gp/product/B009P04YTO?psc=1&redirect=true&ref_=oh_aui_detailpage_o05_s00 .. will do 3A with heatsink, if it needs less and only once a time 3A it'll work w/o heatsink
[14:25] <AirForce590> 3A continuous
[14:25] <cehteh> http://www.amazon.de/DC-DC-Wandler-einstellbar-Spannungswandler-Converter-Blau-1/dp/B00HV4EPG8/ref=pd_sim_ce_2?ie=UTF8&refRID=1AQZQDMDCV4A8TP712SP
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[14:25] <cehteh> or that
[14:26] <AirForce590> or this http://www.amazon.com/RioRand-LM2596-Converter-1-23V-30V-1Pcs-LM2596/dp/B008BHAOQO
[14:26] <AirForce590> for us americans
[14:26] * hadifarnoud (~hadifarno@31.59.85.40) Quit (Ping timeout: 272 seconds)
[14:26] <Moonsilence> mericuh
[14:26] <cehteh> whatever these available everywhere and work well
[14:27] <AirForce590> it's pronounced MERICA http://i.imgur.com/r68g0.jpg
[14:27] <AirForce590> cehteh: ok
[14:27] <cehteh> btw you prolly want different power rails for the pi and for motors/servos
[14:27] <AirForce590> what do you mean?
[14:28] <cehteh> you said robot .. i guess driven by a pi?
[14:28] <AirForce590> Yeah
[14:28] <AirForce590> yeah, different power rails
[14:28] <AirForce590> w/ diodes
[14:28] <AirForce590> to protect the pi from motor spikes
[14:28] <cehteh> na 2 regulators and the one for the pi prolly with a lc filter
[14:28] <cehteh> not diodes
[14:29] <cehteh> as long you have a common ground it'll be fine
[14:29] <AirForce590> ugh
[14:29] <AirForce590> what's an lc
[14:29] <cehteh> just a coil and a capacitor
[14:30] <AirForce590> I don't know how to build one
[14:30] <cehteh> low pass, keeps the electric noise the regulator generates away from the pi
[14:30] <AirForce590> ah
[14:30] <cehteh> its extremely simple
[14:30] <cehteh> http://www.fpvuk.org/how-tos/lc-filters/
[14:31] <AirForce590> ok
[14:31] <cehteh> the values are not very critical, since you need a lowpass as low as possible and the noise you want to keep away is about 150kHz
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[14:32] <cehteh> just make your own coil with as much windings as you can put on a core or buy one whatever you get at hand
[14:32] <cehteh> eh bye :D
[14:32] <SpeedEvil> Don't bother.
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[14:32] <SpeedEvil> Just use two seperate regulators, one for the pi
[14:32] <AirForce590> http://www.instructables.com/id/Passive-Filter-Circuits/
[14:32] <AirForce590> Speed, that sounds better
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[14:32] <cehteh> SpeedEvil: these cheap regulators have a lot of noise themself
[14:32] <SpeedEvil> Especially given the price of DC-DC modules that can run the pi
[14:32] <SpeedEvil> cehteh: Quite - but the Pi doesn't care
[14:33] <cehteh> fine then
[14:33] <AirForce590> yeah, and just power the regs from the same battery
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[14:33] <SpeedEvil> It has internal regulation, and will cope with a quite noisy indeed 5V supply
[14:33] <ozzzy> I run my pis with those chinese boost/buck converters
[14:33] <AirForce590> SpeedEvil: http://www.amazon.com/RioRand-LM2596-Converter-1-23V-30V-1Pcs-LM2596/dp/B008BHAOQO
[14:33] <SpeedEvil> yes, something like that
[14:33] <SpeedEvil> though that is expensive
[14:33] <cehteh> well you can always but the DCDC regulator to 6V and add some ldo behind to massage it to 5V, thats simple and still efficient
[14:34] <ozzzy> cehteh, that's how I run my arduino nanos
[14:34] <ozzzy> LM317 to Vin at about 6.5V
[14:34] <AirForce590> well, I want to power it from a lipo
[14:34] <AirForce590> that's a problem
[14:34] <ozzzy> no problem
[14:34] <SpeedEvil> http://www.aliexpress.com/item/USB-5V-2A-18650-Power-Bank-Battery-Box-Charger-For-Smartphone-iphone-Freeshipping-Wholesale-Puscard/32266766085.html
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[14:35] <ozzzy> a boost/buck is a boost/buck... whatever you want to pump in (within the limits) comes out as what you need
[14:35] <SpeedEvil> This has a 1A output DC-DC converter that conects to a single cell, has a nice bar-graph, and has an integral charger
[14:35] <cehteh> i recently used LM3921 regulators, they are pretty standard but a bit strange as they need a big cap on the output
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[14:35] <mun> hi
[14:35] <SpeedEvil> Undervoltage cutoffs, and all of the things you could want for a battery managment circuit
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[14:36] <mun> could the voltage on the GPIO pins be variable?
[14:36] <cehteh> but they are so much nicer than 7805 ... dont even get warm when powering a tiny from 16.8V in a to92 case
[14:36] <AirForce590> no
[14:36] <cehteh> where the same with a 7805 to220 got hot
[14:36] <SpeedEvil> Just connect to one cell, from 1Ah up
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[14:37] <cehteh> ah .. undervoltage cutoff thats the last thing i've built
[14:38] <cehteh> works from 2 to 4 Cells lipos, shows charge state and turns the load off when voltage drops or too much current is sourced
[14:38] <cehteh> http://public.pipapo.org/Battswitch2.png :)
[14:38] <SpeedEvil> The above just uses any lithium cell, or cells in series.
[14:39] <cehteh> i just wanted to build such a thing by myself :)
[14:39] <SpeedEvil> Reasonable.
[14:40] <SpeedEvil> I just bought one to use up some old 18650s I had
[14:40] <SpeedEvil> For that, they're great
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[14:40] <cehteh> for regulation i use the modules, but the battery watchdog is what i made
[14:42] <mun> is the voltage of the GPIO pins 5V or 3.3V?
[14:42] <AirForce590> don't batteries have intenral protection
[14:43] <AirForce590> mun: 5v i believe
[14:43] <mun> AirForce590: hmm but google gives me 3.3V
[14:43] <AirForce590> maybe
[14:43] <SpeedEvil> AirForce590: No, batteries do not have internal protection.
[14:43] <mun> GPIO outputs are easy; they are on or off, HIGH or LOW, 3v3 or 0v.
[14:43] <SpeedEvil> The GPIOs are 3.3V. Applying 5V may kill them
[14:43] <mun> https://www.raspberrypi.org/documentation/usage/gpio/
[14:43] <mun> hmm
[14:44] <SpeedEvil> AirForce590: Some batteries might have protection circuits added - these are usually sold as 'protected'
[14:44] <SpeedEvil> Or retail ones for cellphones and such always do
[14:44] <AirForce590> So, I am looking at connecting http://www.hobbytown.com/Shop/VNR1577-Venom-Racing-20C-11-1V-2100mAh-3S-Lipo-Batt-Ec3-Pz/ to two http://www.amazon.com/RioRand-LM2596-Converter-1-23V-30V-1Pcs-LM2596/dp/B008BHAOQO to motors and pi
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[14:45] <AirForce590> cool?
[14:46] <mun> SpeedEvil: thanks
[14:46] <AirForce590> SpeedEvil?
[14:47] <SpeedEvil> That's not protected - it will be destroyed teh first time you leave the pi connected
[14:48] <AirForce590> how can I protect it?
[14:49] <AirForce590> boom
[14:49] <AirForce590> protected.... http://www.adafruit.com/product/354
[14:50] <AirForce590> rated for 4A, max current 8A
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[14:50] <AirForce590> pair it with the buck boost aforementioned and i'm golden
[14:51] <SpeedEvil> http://www.ebay.co.uk/itm/2S-Li-ion-Lithium-18650-Battery-Input-Protection-circuit-Board-PCB-7-4V-2A-/301421249144?pt=LH_DefaultDomain_3&hash=item462e1b4278 as an example
[14:52] <SpeedEvil> the above is for two cells
[14:52] <AirForce590> SpeedEvil: http://www.adafruit.com/product/354
[14:52] <AirForce590> protection is on-package
[14:52] <SpeedEvil> or yes, that
[14:52] <SpeedEvil> you of course need a step-up converter now
[14:53] <SpeedEvil> Do you care about weight?
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[14:54] <AirForce590> alright
[14:54] <AirForce590> http://www.amazon.com/RioRand-LM2596-Converter-1-23V-30V-1Pcs-LM2596/dp/B008BHAOQO
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[14:55] <AirForce590> SpeedEvil: will that be goof
[14:55] <AirForce590> good
[14:55] <SpeedEvil> Step up
[14:55] <SpeedEvil> not down
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[14:56] <AirForce590> sry, can you recommend one?
[14:56] <SpeedEvil> But, any 4 18650 cells, and the above thing would power the pi for longer
[14:56] <SpeedEvil> Tha aliexpress one
[14:56] <AirForce590> these are 18650s
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[14:58] <SpeedEvil> yes
[14:59] <SpeedEvil> But they don't have a power converter, or charger
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[15:51] <AirForce590> best boost converter for getting 5v@3A from a liion?
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[15:57] <AirForce590> is this good? http://www.linear.com/solutions/5040
[15:59] <SpeedEvil> yes
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[16:03] <AirForce590> SpeedEvil: I was looking for a sort of ready made solution though
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[16:04] <SpeedEvil> why do you need 3a
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[16:10] <ali1234> he's running motors
[16:11] <burritodog> Look into a RC BEC? (Google hobbyking bec for an idea)
[16:12] <mxtm> should i buy another raspberry pi or nah
[16:12] <mxtm> anywhere i can buy one in chicago while i'm there on vacay
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[16:13] <fred1807> Guys, could you help me with some basics, about installing MegaFuse on my raspi? I mean, real basics, just a how-to get it from github and compile
[16:13] <mxtm> were you born in 1807?
[16:14] <fred1807> mxtm: I just dont know how
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[16:14] <MY123> mxtm, no human in this channel was born before the 20th century
[16:14] <fred1807> mxtm: You were born already knowing linux?
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[16:16] <karlton> fred1807: it says on the git hub page to just run make to compile
[16:16] <mxtm> MY123: no way
[16:16] <mxtm> also, I've been linuxing for
[16:16] <karlton> s/git hub/github/
[16:16] <mxtm> 6 or 7 years?
[16:17] <fred1807> karlton: Basic than that... I need first to download it, right?
[16:18] * nefarious (~nef@unaffiliated/nefarious) Quit (Read error: Connection reset by peer)
[16:19] <karlton> fred1807: "git clone https://github.com/matteoserva/MegaFuse.git megafuse" "cd megafuse" "make" "./MegaFuse"
[16:19] <fred1807> how many of you knew about MegaFuse ?
[16:19] <fred1807> karlton: thanks
[16:19] * crazy_cletus (~preston@72.168.129.71) Quit (Quit: Got to sleep sometime!)
[16:20] <fred1807> karlton: Guess I must run: apt-get install libcrypto++-dev libcurl4-openssl-dev libdb5.1++-dev libfreeimage-dev libreadline-dev libfuse-dev
[16:20] <fred1807> First, Right? Since I am on debian
[16:20] <fred1807> mxtm: Did you knew about MegaFuse?
[16:20] <karlton> fred1807: yes
[16:20] * eXtremo (~eXtremo@unaffiliated/extremo) Quit (Quit: ZNC - http://znc.sourceforge.net)
[16:20] <mxtm> not me
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[16:22] <fred1807> karlton: Just wondering... Should a rp B+ Handle 5 distinct mounts of megafuse ?
[16:22] <nefarious> Quick way to restart a raspberry pi; plug in a USB stick lol >.>
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[16:24] <karlton> fred1807: I don't know, I have never used it :/
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[16:25] <fred1807> karlton: "By default on debian system you need to be root to mount a fuse filesystem." Using SUDO is enough?
[16:25] <karlton> it should be
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[16:30] <fred1807> karlton: After Make,, I try entering "./MegaFuse" But I only get -bash: ./MegaFuse: Is a directory
[16:31] <fred1807> karlton: now it started...
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[16:34] <fred1807> karlton: I am stuck at: " Specify a vailid mountpoint (an empty directory):"
[16:35] <fred1807> I am missing some linux expected format here?
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[16:35] <woddy> hello
[16:36] <woddy> assuming you have a raspbian in a virtual box
[16:36] <woddy> and you want to use a jtag adapter
[16:36] <woddy> at your real raspberry pi
[16:36] <woddy> so the stuff you do on your virtual raspberry pi
[16:36] <woddy> 's registers
[16:36] <woddy> are sent to the physical ones I/O registers over the jtag interface
[16:36] <woddy> how would you do that
[16:37] <woddy> :D
[16:37] <woddy> is that hard to achieve?
[16:38] <karlton> fred1807: it says you have to edit the megafuse.conf for options
[16:38] <karlton> fred1807: set mount point to /mnt or something
[16:39] <fred1807> karlton: /mnt/megadrive/ is ok?
[16:39] <fred1807> shuold I mkdir it first?
[16:39] <karlton> yeah sudo mkdir /mnt/megadrive first
[16:39] <fred1807> thx
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[16:43] <woddy> lamers :D
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[16:46] <woddy> e.g. with an https://www.segger.com/jlink-debug-probes.html
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[16:50] <fred1807> karlton: The shell I started the ./megafuse command seems to be running it (I cannot time commands anymore) So I opened a new ssh window, and I am workin from there. The fuse mount is working! :D But How can I make it system wide avaliable? (So I can close that ssh window) ?
[16:51] * Lartza (lartza@unaffiliated/lartza) Quit (Ping timeout: 252 seconds)
[16:51] <fred1807> karlton: Also, I can only " ls" stuff on mount drive with "sudo ls"
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[16:54] <karlton> fred1807: because it is mounted as root
[16:55] <fred1807> karlton: I see, and My music player (mpd, with mpc client) cannot see the mount :(
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[16:56] <karlton> and you can run it in the background by placing an "&" after the command
[16:57] <fred1807> Ok, so I terminate the shell running MegaFuse right now. And star it again with $./MegaFuse But How can I make it avaliable to users (including mpd player)
[16:58] <fred1807> If I try to run ./MegaFuse without Sudo, I get: fuse: failed to open /dev/fuse: Permission denied
[16:59] <fred1807> mxtm: Are you playing already with MegaFuse ?
[16:59] <mxtm> no
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[17:00] <karlton> fred1807: I think you need to make the folder part of a group with user in it with read permissions
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[17:01] <fred1807> karlton: My user is called " musicman "
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[17:04] <karlton> I am really not sure on this one, maybe check to see if there is a group called "fuse" in /etc/group ?
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[17:07] <fred1807> no there is not
[17:08] <fred1807> I am trying some help I found at google
[17:08] <fred1807> about adding my user to Fuse group
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[17:08] <fred1807> but "there is no such group"
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[17:11] <AirForce590> How can I boost a lipo up to 5v with 3a output?
[17:12] <Froolap> get a bigger battery
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[17:12] <AirForce590> Froolap: I was looking for a boost converter
[17:12] <AirForce590> but that might workas well
[17:12] <fred1807> karlton: Somehow I created the group, and Now my user can run the ./Megafuse, , but partually..., Now I am getting: fuse: failed to exec fusermount: Permission denied
[17:12] <fred1807>
[17:12] <tawr> AirForce590,
[17:13] <tawr> dc-dc converter
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[17:13] <tawr> 5v 3A output is kinda high. you'd need a lipo that can handle ~5A
[17:13] <AirForce590> I have one
[17:13] <AirForce590> actually its liion
[17:13] <tawr> i came in late, what are you trying to do?
[17:13] <AirForce590> tawr get 5v at 3a current from li-ion to power a robot
[17:14] <AirForce590> I just can't find a dc-dc with 3A output
[17:14] <tawr> hmm, for robots it would probably be better
[17:14] <tawr> to just run 2 cells in series, then use a dc-dc stepdown
[17:14] <tawr> or see if it can handle that voltage, and only pull the 5v for things that need 5v, and run the motors+controllers on the higher voltage
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[17:17] <karlton> fred1807: maybe try to mount it to a folder that isn't root?
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[17:18] <tawr> or add it to /etc/fstab so it mounts automatically with the right permissions
[17:18] <tawr> like u=username or gid=group id, umask 007
[17:18] <tawr> so it's available system-wide
[17:18] <fred1807> karlton: "fusermount: user has no write access to mountpoint /mnt/megadrive"
[17:18] <tawr> yeah fred1807
[17:19] <tawr> type mount
[17:19] <tawr> and paste me the line for that fs
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[17:19] <tawr> I have my usb (not fuse) set as so: UUID=A2CE-FFF0 /media/storage vfat uid=tawr,umask=007 0 0
[17:19] <tawr> umask = user= read/write/execute
[17:20] <karlton> fred1807: maybe "sudo chown -R <your user name> /mnt/megadrive" as a hack? :)
[17:20] <tawr> karlton, it's the mount permissions not folder
[17:20] <tawr> fred1807, type mount, and paste me the line
[17:20] <fred1807> tawr: I get many lines
[17:21] <tawr> just the line for the fuse filesystem
[17:21] <tawr> your "/mnt/megadrive" line
[17:21] <fred1807> but I was unable to mount
[17:21] <tawr> you said it mounted
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[17:21] <tawr> and you couldn't access it withouit sudo
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[17:21] <tawr> type mount, and copy everything and put it on pastebin for us
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[17:25] <fred1807> tawr: Ok, here you can see. from the time i started the MegaFuse
[17:25] <fred1807> tawr: http://pastebin.com/raw.php?i=bD7G9Pj9
[17:26] <tawr> okay, and if you sudo ./megafuse
[17:26] <tawr> it works properly?
[17:26] <tawr> can you sudo ./megafuse, then print the output and the output of mount and pastebin it as well?
[17:27] <fred1807> tawr: I did that before, and it worked. But my music playet (mpd) could not read the files
[17:27] <fred1807> I could only seem them, ls them, etc, as sudo / root user
[17:27] <tawr> yes
[17:27] <tawr> still do that
[17:27] <tawr> and we'll fix the permissions later
[17:27] <tawr> let's get it mounted
[17:27] <tawr> so you have the information to write to /etc/fstab so you can do it as a user
[17:28] <tawr> make sense? you have to do it as root to get the information needed, to be able to do it as a user :)
[17:28] <[Saint]> well...
[17:29] <[Saint]> you don't have to, but, it's a form of cheating in a sense that may or may not make things easier for third parties trying to steer someone else.
[17:29] <tawr> once it's mounted as root, we'll get the information to make the line in /etc/fstab so that a user (moods) can mount it, and read/write to it as moods
[17:29] <fred1807> http://pastebin.com/raw.php?i=aHV3uE0f
[17:29] <tawr> [Saint], yes, but I felt it was just easier to explain it that way
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[17:29] <tawr> you didn't paste the mount output fred1807 ..
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[17:30] <tawr> i need the mount information, as well as ls -al /mnt
[17:30] <fred1807> megafuse on /mnt/megadrive type fuse.megafuse (rw,nosuid,nodev,relatime,user_id=0,group_id=0)
[17:30] <[Saint]> heh, there we go.
[17:30] <[Saint]> UID/GID, heh.
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[17:31] <tawr> fred1807, <DEVICE> /mnt/megadrive fuse uid=moods,umask=007 0 0
[17:32] <tawr> add that to /etc/fstab. change <device> to the actual megadrive device name
[17:32] <tawr> as sudo, just put it at the end of the file
[17:32] <fred1807> I have no idea what I shuold change <devide> to
[17:33] <tawr> df -h
[17:33] <tawr> and pate the line from /mnt/megafuse
[17:33] <fred1807> megafuse 50G 50G 49G 51% /mnt/megadrive
[17:34] <fred1807> "megafuse" then?
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[17:34] <tawr> try it
[17:34] <tawr> megafuse /mnt/megadrive fuse uid=moods,umask=007 0 0
[17:34] <tawr> or maybe
[17:35] <tawr> megafuse /mnt/megadrive fuse.megafuse uid=moods,umask=007 0 0
[17:35] <tawr> not sure which would be right as the filetype (fuse or fuse.megafuse)
[17:35] <tawr> so sudo /etc/fstab, and add one or the other to the end of /etc/fstab
[17:35] <tawr> then use sudo umount /mnt/megadrive, then try ./megafuse like normal
[17:36] <fred1807> without sudo.... : fusermount: user has no write access to mountpoint /mnt/megadrive "
[17:37] <tawr> okay
[17:37] <tawr> ls -al /mnt
[17:37] <fred1807> my fstab righ now: http://pastebin.com/raw.php?i=yYpk3GqB
[17:38] <fred1807> drwxr-xr-x 2 root root 4096 Apr 19 14:43 megadrive
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[17:40] <tawr> sudo chown moods:users /mnt/megadrive
[17:40] <tawr> with it unmounted first
[17:40] <tawr> unmount the folder as root (sudo)
[17:40] <tawr> then run that command
[17:41] <tawr> lets take it to PM, we're flooding the channel lol
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[18:18] <tawr> fred1807, still alive?
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[18:21] <fred1807> Yes, I was trying to make MPD read the file
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[18:24] <jer> there's no hardware support for tagging a given pixel (or range of pixels) to a particular user-defined owner, right? say i have two processes running on the bare metal (no linux involved here); i want to give these processes the ability to request a certain part of the framebuffer for their own use, and the other process will trap if it tries to draw in space it doesn't belong
[18:25] <ali1234> the videocore is a zero-copy compositor; there is no framebuffer
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[18:26] <jer> ah ok fair enough =
[18:26] <jer> =]
[18:26] <[Saint]> I...what?
[18:26] <[Saint]> *cough* http://elinux.org/RPi_Framebuffer#Format_of_GPU_Framebuffer_Structure *cough*
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[18:27] <ali1234> [Saint]: only exists on linux
[18:27] <[Saint]> what am I missing here...
[18:27] <[Saint]> oooooooohhhh, bare metal.
[18:27] <[Saint]> riiight.
[18:27] <jer> yeah =]
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[18:27] <ali1234> what is refered to as the "framebuffer" on linux is just a surface
[18:28] <jer> yeah i call it a screen in my code; just use the term framebuffer for familiarity, perhaps i shouldn't have =]
[18:28] <jer> i mean i can do all this in software, but was hoping for some hardware support =]
[18:28] <ali1234> so anyway what you'd do is give each process it's own surface. they wouldn't be able to draw in each other's surfaces because they wouldn't know where they are in memory
[18:28] <jer> right
[18:29] <jer> thanks
[18:30] <ali1234> i suggest playing with hello-dispmanx example under linux to get a feel for how it works
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[18:30] <ali1234> no idea how you do the same things on bare metal though
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[18:33] <jer> i was already gravitating to just supplying support to multiplex the hardware in my "kernel" only
[18:33] <jer> so compositing multiple screens together
[18:33] <jer> within the bounds allowed by the grant
[18:34] <jer> wouldn't trap if another process tries to set a pixel it doesn't own (at least not inherently)
[18:34] <jer> but would stop it from showing up on screen
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[18:34] <ali1234> well, i think you're looking at it the wrong way
[18:34] <jer> hrmm ok
[18:34] <ali1234> there's no single piece of memory that represents "all the pixels on the screen"
[18:35] <ali1234> unless you create one, which is what the linux framebuffer thing is
[18:35] <ali1234> but there's no need to do it that way
[18:35] <jer> yeah i have one of those atm, but i'm not married to it =]
[18:35] <ali1234> if you give each process it's own surface, you give it a surface the size of the area you want to give it
[18:35] <jer> what i really want is to isolate parts of the screen from modification by external processes
[18:35] <ali1234> the surfaces have a z-order which determines which one is visible when they are all stacked
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[18:36] <[Saint]> duct tape.
[18:36] <[Saint]> that'll do it
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[18:36] <[Saint]> just tape over the sections of the screen you don't want to see modified.
[18:36] <[Saint]> #crappyITsolutions
[18:37] <jer> [Saint], i'm Canadian, don't give me ideas =p https://www.youtube.com/watch?v=KhSqvycZZ0c
[18:37] <ali1234> surfaces don't have to be "the whole screen" - they can just cover part of it. they are automatically scaled too
[18:38] <ali1234> so you don't divide up one buffer between the processes. each one has it's own private buffer. then the compositor decides which ones are visible
[18:38] * nerdboy can't go out until trousers are finished building...
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[18:38] <jer> ali1234, ah ok, that makes sense
[18:40] <jer> thank you
[18:40] <ali1234> incidentally, this is why X sucks but Wayland is fast on the rpi
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[18:40] <ali1234> X is simply not well suited to this type of graphics hardware
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[18:42] <TheLostAdmin> I'm still waiting for Steve Smith to make a functioning Turing machine or at least a flip-flop out of duct tape.
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[18:44] <TheLostAdmin> ali1234, what actually runs on Wayland at this point? I haven't dug very deep I'm just using the default install of raspbian. I'm not even sure how to tell.
[18:45] <ali1234> Qt, Gtk... what else do you need?
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[18:45] <ali1234> but the real answer is no real desktop can run on Wayland on the pi, because only Weston was ported and it's a toy at best
[18:46] <ali1234> however if you don't need a full desktop environment it could be a very good choice
[18:46] <TheLostAdmin> I was thinking more along the lines of end-user applications since I rarely need to dig down to the library levels unless I need to compile myself.
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[18:46] <TheLostAdmin> But, thanks
[18:47] <ali1234> applications should run if they are written in Gtk or Qt and they don't use X11 features directly
[18:47] <ali1234> assuming you build Gtk or Qt with Wayland support, i don't know if default raspbian does that
[18:48] <ali1234> needs modern Gtk/Qt too of course. Gtk2 will not work
[18:49] <ali1234> contrary to popular belief, Wayland is not a drop-in replacement for X, it works very differently and requires the toolkits to provide a lot more features
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[18:54] <TheLostAdmin> I knew Wayland wasn't X and so something had to happen somewhere for applications to work with it. But I still don't know how to tell or if there is enough Wayland supporting applications for my needs.
[18:55] <ali1234> applications aren't the problem; the problem is the desktop shell/window manager stuff
[18:55] <ali1234> under X there is no difference between applications and window managers etc
[18:55] <ali1234> under Wayland they are totally different
[18:56] <TheLostAdmin> Ah, okay.
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[18:56] <TheLostAdmin> Well, okayish.
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[19:15] <Chillum> I got a tft touchscreen and it really sucks. You have to push very hard and there is little resolution. Are there any small touchscreens for the Pi that don't suck?
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[19:17] <Sonny_Jim> I'm guessing it's the digitiser from a NDS, so it'll be resistive rather than capacitor
[19:17] <Sonny_Jim> Try using a stylus with it
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[19:22] <[Saint]> lol
[19:22] <[Saint]> remember when people preferred resistive touch?
[19:22] <[Saint]> those were the days...
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[20:43] <celesteh> Hello, I've got a shell script which starts jackd and another program that uses jackd. It works fine when I run it from the terminal, but when I try to autolaunch it on login, it doesn't make any sound. I'd appreciate any advice
[20:46] <ali1234> hmmmmmm raspbian doesn't support IPV6? really?
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[20:46] <ali1234> oh, it's a module
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[20:47] <tawr> celesteh, any errors?
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[20:47] <tawr> check logs? see if it's "really" running when auto-launched on login?
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[21:21] <Peanut> Hi, I just got an RPI2B. If I download Raspbian 2015-02-16, will that work with the 2 as well, or is that a different architecture?
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[21:26] <Tripout> hello together. i try to set up an ejabberd server on my pi. i wish to use a server certificate by ca cert for example. but i have trouble to get a certificate, because when i add my dyndns host, they want to e-mail to an admin account of this domain. does anybody have experiences how to set up a trusted ssl cert on pi?
[21:30] * dorkmafia (~dorkmafia@2601:9:680:89b:9ce7:ed85:3581:ad5) Quit (Ping timeout: 252 seconds)
[21:30] <heller\> hello guys. can anyone guide me on a script, where i need to read GPIO falling edge for one minute and then use math on the increments
[21:31] <Peanut> What kind of help would you need with that, heller\ ?
[21:31] <heller\> well i know kind what i need to do
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[21:31] <heller\> i need amount of increments / 1000
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[21:32] <heller\> but first i need to wait for increments for 60 seconds
[21:32] <ali1234> what is increments?
[21:33] * AbouEmre (~Thunderbi@196.216.8.137) Quit (Quit: AbouEmre)
[21:33] <heller\> i was thinking of something like timemark = time.datetime() and then if timemark => 60 sum the increments
[21:33] <heller\> increments is a pulse in GPIO input
[21:34] <ali1234> so a rising edge
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[21:34] <heller\> falling edge actually
[21:34] <ali1234> what language are you using?
[21:34] <heller\> somewhy rising edge gave me double if too fast
[21:34] <heller\> python please
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[21:34] <ali1234> "too fast" - so you want to low pass filter it?
[21:35] <heller\> no i mean if the pulse was too fast, i got double readings
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[21:35] <Peanut> What do you mean with 'too fast'? Too short rising time, or too close to the previous one?
[21:35] * netzfisch (~Thunderbi@x55b066b2.dyn.telefonica.de) has joined #raspberrypi
[21:35] <ali1234> use interrupts for this
[21:36] <heller\> Peanut: i mean when the pulse was high freaquency, the readings were wrong
[21:36] <heller\> to be more clear, im reading a blinking led on a Wattmeter with TLS257 light-to-voltage sensor
[21:37] <ali1234> definitely use interrupts for this
[21:37] <heller\> i guess i am :p
[21:37] * pixelfilth (~pixelfilt@host-17-94-2-96.midco.net) has joined #raspberrypi
[21:37] <ali1234> use wiringPi
[21:37] <heller\> http://pastebin.com/rHEkyQCg
[21:38] <ali1234> looks good
[21:38] <heller\> its using interrupt?
[21:38] <ali1234> yes
[21:38] <heller\> thought so :)
[21:38] <heller\> thats the code i was testing it with
[21:38] <ali1234> i hope so anyway
[21:39] <heller\> if it was RISING, and the blinkin was fast, i got double results
[21:39] <heller\> fixed it with changing it to FALLING
[21:39] <ali1234> put a delay in to the loop
[21:39] <heller\> i had o'scope measuring it, and the was no reason for my understanding
[21:39] <heller\> i cant put a delay? it could miss blinks?
[21:39] <ali1234> not if the delay is short
[21:40] <ali1234> your watt meter blinks every time a watt hour is used right?
[21:40] <heller\> well it can blink very vast
[21:40] <heller\> no
[21:40] <ali1234> it's a home electricity meter
[21:40] <heller\> 10000imp/kwh
[21:40] <heller\> yes
[21:40] <ali1234> so 1 blink every 0.1 watt hours?
[21:40] <heller\> it blinks like hell when its something like 15kW usage
[21:40] <ali1234> if you can even see that it is blinking then it is not blinking fast
[21:41] <heller\> i cant see it with my eye
[21:41] <heller\> oscope yes
[21:41] <heller\> but that is not the point anymore, i got it counting ok
[21:41] <heller\> now i just need a code to do the math :)
[21:42] <ali1234> 15kw = 45 blinks per second?
[21:42] <heller\> i guess
[21:42] <ali1234> that's 22msec between blinks
[21:43] <heller\> how did you count it :p
[21:43] <heller\> im dead bad in math of any kind.
[21:43] <ali1234> what do you want? watts?
[21:44] * petersaints (~quassel@a95-94-145-198.cpe.netcabo.pt) Quit (Remote host closed the connection)
[21:44] <heller\> yeah
[21:44] <ali1234> so yeah, what you said before
[21:44] <ali1234> get the current time before the loop starts
[21:44] <heller\> i was thinking of counting amount of blinks between 60 seconds and then dividing by 10000
[21:44] <ali1234> and do while (current time - start time) < 1 second:
[21:44] <heller\> yes thats about what im trying to do
[21:45] <heller\> but actually im now wondering how can i strip microseconds from time.datetime() :P
[21:45] <ali1234> you don't need to
[21:46] <heller\> i mean time.time()
[21:46] <heller\> im no good in python too so be gentle
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[21:48] <Peanut> Hi, I just got an RPI2B. If I download Raspbian 2015-02-16, will that work with the 2 as well, or is that a different architecture?
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[21:49] <heller\> new NOOBS is compatible with b+ and 2
[21:49] <ali1234> use datetime.datetime.utcnow()
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[21:49] <heller\> why not time.time()
[21:49] <Peanut> heller\: so I need to get noobs, not rasbian itself?
[21:50] <heller\> Peanut: raspbian is goo too
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[21:50] <heller\> Peanut: shoul work too )
[21:50] <heller\> :)
[21:50] <Peanut> heller\: your d is broken? :-) Also: thanks, writing it to uSD card now.
[21:51] <heller\> sorry :p im not too keen on keeping track on my text at this time of day :p
[21:51] <heller\> should be going to bed already
[21:51] <Peanut> Me too.. enjoying the last bits of the weekend.
[21:51] <heller\> So true
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[21:52] <Peanut> Whee, copied Rasbian at 14.6 MB/s to my new card.
[21:52] <ali1234> heller\: actually doesn't matter which you use, you get a timedelta either way
[21:52] <ali1234> hmm actually you get seconds
[21:53] <heller\> actually i think i made it
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[21:53] <heller\> ah yes
[21:54] <heller\> >>> print(time.time()); time.time() - 30.0; print(time.time())
[21:54] <heller\> first time is current time, next is current - 30 seconds, and then current time
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[21:54] <Tripout> i'll ask again... is it possible to get a ca signed ssl certificate for a pi and a dyndns redirect?
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[21:55] <heller\> oh man i was struggling with this for no reason
[21:55] <Tripout> or do i have to live with untrusted ssl certs?
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[21:59] <Technicus> Hello, I'm having trouble setting up the IR sensor with OpenELEC on a RaspberryPi. Is there anyone here with experience setting it up, and able to give me some advice?
[21:59] <heller\> Technicus: ask
[22:01] <Technicus> heller\: I am trying to follow: < http://kodi.wiki/view/HOW-TO:Setup_Lirc#Download_and_install_Lirc >, but not having much success
[22:01] <Froolap> it is difficult to answer when one has not been provided with the correct question.
[22:02] <heller\> What is Lirc anyway :p
[22:02] <Technicus> Always with the sarcastic zen responses that IRC channels are legendary for . . . .
[22:02] * ircuser-1 (~ircuser-1@158.183-62-69.ftth.swbr.surewest.net) Quit (Quit: ircuser-1)
[22:03] <heller\> oh its some sort of remote
[22:03] <heller\> Technicus: can you aptitude install lirc?
[22:03] <Technicus> https://learn.adafruit.com/using-an-ir-remote-with-a-raspberry-pi-media-center?view=all
[22:03] * codestorm (~codestorm@cpe-75-83-205-183.socal.res.rr.com) has joined #raspberrypi
[22:04] * kayatwork (~kayfox@orca.zerda.net) Quit (Ping timeout: 252 seconds)
[22:04] <Technicus> heller\: . . . no there is no repository.
[22:04] * AbouEmre (~Thunderbi@196.216.8.135) Quit (Quit: AbouEmre)
[22:04] <heller\> oh?
[22:04] * kayatwork (~kayfox@orca.zerda.net) has joined #raspberrypi
[22:04] * Encrypt (~Chuck-nor@AMontsouris-553-1-58-159.w92-151.abo.wanadoo.fr) Quit (Quit: Quitte)
[22:05] <ali1234> the first set of instructions isn't for raspberry pi specifically
[22:05] * AbouEmre (~Thunderbi@ewimax3.ewimax.mw) has joined #raspberrypi
[22:05] <Technicus> heller\: OpenELEC replies with: "With OpenELEC it is not possible to change the system for security . . ."
[22:05] <heller\> Technicus: what does your /etc/apt/sources.list say?
[22:06] <Technicus> No such file or directory
[22:06] <Technicus>
[22:06] <ali1234> http://wiki.openelec.tv/index.php/Guide_To_lirc_rpi_GPIO_Receiver
[22:06] * iamjarvo (~textual@c-69-249-187-177.hsd1.pa.comcast.net) has joined #raspberrypi
[22:06] <heller\> Technicus: raspbian?
[22:06] <Technicus> OpenELEC
[22:06] <heller\> aaah.
[22:07] <heller\> http://wiki.openelec.tv/index.php/Guide_To_lirc_rpi_GPIO_Receiver helps?
[22:07] * ynonp (~ynonperek@31.210.186.149) Quit (Quit: This computer has gone to sleep)
[22:08] * Liam` (liam@lightning.bouncer.ml) Quit (Remote host closed the connection)
[22:08] <Technicus> heller\: I'll look at this
[22:08] <heller\> ali1234: im i going the right way? http://pastebin.com/gw62ZZq6
[22:08] * codestorm (~codestorm@cpe-75-83-205-183.socal.res.rr.com) Quit (Ping timeout: 264 seconds)
[22:08] <heller\> i know its not working but thats something im going for
[22:08] <ali1234> no
[22:09] <heller\> that should print every 10 sec
[22:09] <heller\> biggest problem is that time gets resetted every time
[22:10] * jasabella (~jasabella@host86-183-238-154.range86-183.btcentralplus.com) has joined #raspberrypi
[22:10] <ali1234> http://pastebin.com/CN9rkyCk
[22:11] * kayatwork (~kayfox@orca.zerda.net) Quit (Ping timeout: 245 seconds)
[22:11] <ali1234> wait that's wrong
[22:11] <jasabella> does anyone know where i can download a bare minimum raspbian image with firmware-realtek and openssh-server installed? i dont want X
[22:12] <heller\> jasabella: you can do aptitude purge everything-thing-you-dont-need
[22:12] <jasabella> i dont have a keyboard and monitor to plug into the thing and only have a wifi (no patch cable!)
[22:12] * ynonp (~ynonperek@31.210.186.149) has joined #raspberrypi
[22:13] <heller\> jasabella: is it online?
[22:13] <heller\> does it have ssh connection?
[22:13] <jasabella> not right now, i tried to set it up so that it would go online
[22:13] <jasabella> with my wifi router
[22:13] <heller\> ah
[22:13] <jasabella> (somewhere not at home where i borrowed a keyboard and monitor)
[22:13] * utack (~utack@ip923464f1.dynamic.kabel-deutschland.de) Quit (Remote host closed the connection)
[22:13] <jasabella> yeah
[22:13] <jasabella> i'm frustrated :)
[22:13] <heller\> jasabella: whenever i've used Rpi only with wifi, i have used TV+keyb to setup wifi
[22:13] <jasabella> i dont even have a tv :|
[22:14] <heller\> you maybe could insert the sd-card to your computer and aler the /etc/network/interfaces?
[22:14] <heller\> aler = alter
[22:14] <jasabella> been doing that too
[22:14] <jasabella> hah
[22:14] <jasabella> trying
[22:14] <heller\> no luck?
[22:14] <jasabella> nope
[22:14] <heller\> what did you put in there
[22:15] <jasabella> wpa-* under wlan0
[22:15] <jasabella> so then i tried wicd-curses :)
[22:15] <jasabella> it worked with the wifi network at the place i borrowed a keyboard and monitor
[22:15] <jasabella> but it wont work at home x(
[22:16] <jasabella> (yes i checked the password and router's mac address and ssid very carefully)
[22:16] <heller\> http://pastebin.com/u55pEgCf could this work?
[22:16] <jasabella> i wish the foundation would provide a
[22:16] <jasabella> server image or osmething
[22:16] <heller\> we actually at work are trying to make one tomorrow
[22:16] <heller\> ultimate raspbian image :P
[22:16] <jasabella> not exactly an edge case imho
[22:17] * ynonp (~ynonperek@31.210.186.149) Quit (Client Quit)
[22:17] <heller\> ali1234: did you fell asleep? :)
[22:17] <jasabella> yea but instead of allow-hotplug i used auto so on startup it would be ifup'ed
[22:17] <Froolap> jasabella: can you boot the pi while connected to cat5, then ssh into to pi to configure the wireless?
[22:18] <jasabella> i dont have cat5 cable lol
[22:18] <heller\> that slike the first problem :)
[22:18] <jasabella> but yeah
[22:18] <ali1234> http://pastebin.com/WqnnJEZc
[22:18] <heller\> i always carry a ct5 cable with me
[22:18] <Froolap> you could make one with toothpicks. lol
[22:18] <heller\> actually only if im working i mean
[22:18] <heller\> not in "civi" life :p
[22:18] <jasabella> i'll mount the microsd card again and tinker with the /etc/wicd files again
[22:19] <heller\> jasabella: i dont know about the wicd, i never used it
[22:19] * morois (~morois@28.119.165.83.dynamic.mundo-r.com) has left #raspberrypi
[22:19] <Froolap> jasabella: if you have linux box, maybe you can chroot to your sd card and then configure
[22:19] <jasabella> does pi support crossover cable?
[22:19] <heller\> jasabella: i think its more about the router
[22:19] * Guest___ (~textual@host81-155-68-230.range81-155.btcentralplus.com) has joined #raspberrypi
[22:20] <jasabella> i sudo mount -o offset=blah /dev/mmc...
[22:20] <jasabella> to get to the partition
[22:21] <heller\> ali1234: tring
[22:21] <heller\> trying
[22:21] <heller\> python3 gives error
[22:21] <heller\> trying with 2
[22:21] <ali1234> print (watts, "Watts") - will work on python 3
[22:22] <heller\> ah
[22:22] <heller\> so it works for one time
[22:22] <heller\> how to make it looping?
[22:22] * AbouEmre (~Thunderbi@ewimax3.ewimax.mw) Quit (Ping timeout: 250 seconds)
[22:22] <jasabella> so the rsapbian ultimate image... what's that about if you dont mind telling? :)
[22:23] <heller\> jasabella: we have lots of raspberrys doing some sensor reading at work. and were going to make one which would have all stuff ready and useless stuff removed
[22:23] <jasabella> ahhh
[22:23] <heller\> it would be pretty minimal and then we'd use scripts to install stuff for certain sensors
[22:23] <jasabella> mmhmmm
[22:23] * ecogiko (~ecogiko@unaffiliated/ecogiko) has joined #raspberrypi
[22:23] <ecogiko> Hello!
[22:24] <heller\> hey ecogiko
[22:24] <jasabella> sounds like fun
[22:24] <heller\> jasabella: we'll see :P
[22:25] <jasabella> feel free to release the image (without your special scripts of course) :P
[22:25] * kayatwork (~kayfox@orca.zerda.net) has joined #raspberrypi
[22:25] <heller\> i might upload it somewhere :)
[22:25] <heller\> it will probaply have non-default logins
[22:26] <heller\> but thats easy to change
[22:26] <jasabella> i want a stable os release, for a server
[22:26] <jasabella> yeah
[22:26] <heller\> rpi as server?
[22:26] <jasabella> yes
[22:26] <heller\> many servers or just one?
[22:26] <jasabella> just one
[22:26] <heller\> wy bother with image hassle?
[22:26] <heller\> it would be easier to make it work from scrath
[22:26] <heller\> scratch
[22:27] <jasabella> i'm currently trying with this one http://sjoerd.luon.net/posts/2015/02/debian-jessie-on-rpi2/
[22:27] <jasabella> no ssh installed on it though :(
[22:27] <heller\> heh
[22:28] <heller\> hmm jasabella what if your rpi is online but no ssh enables?
[22:28] <heller\> enabled*
[22:28] <jasabella> so yeah i added ssh-server on
[22:28] <heller\> okies
[22:28] <jasabella> i was ssh'ing into it at the place i was setting it up
[22:28] <jasabella> it's listening on 0.0.0.0 so it shouldnt be an issue
[22:29] <ecogiko> I am having a really weird problem booting my raspberry pi b+ for quite some time now. I am am installing Arch Linux ARM from an Arch Linux host. A flatmate of mine tested it on his setup and it was working. The RaspberryPi's ethernet LEDs aren't flickering and I am guessing it's because it hasn't booted. I am supplying enough power to it through an USB connected to a phone charger.
[22:29] * igordcard_ (~overlayer@198.3.115.89.rev.vodafone.pt) Quit (Quit: Leaving)
[22:30] * AbouEmre (~Thunderbi@196.216.8.132) has joined #raspberrypi
[22:31] <ecogiko> I am not sure how make it boot
[22:31] * igordcard (~igordcard@198.3.115.89.rev.vodafone.pt) has joined #raspberrypi
[22:32] * itsmegb (~itsmegb@unaffiliated/itsmegb) has joined #raspberrypi
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[22:32] <jasabella> maybe i should try the ubuntu image hmmm
[22:32] <heller\> ali1234: any hints on the looping?
[22:34] <ali1234> http://pastebin.com/jAZKhPJC i think the math is right now
[22:34] * iamjarvo (~textual@c-69-249-187-177.hsd1.pa.comcast.net) Quit (Quit: My MacBook has gone to sleep. ZZZzzz…)
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[22:38] * asura (~quassel@unaffiliated/xdb-asura) Quit (Read error: Connection reset by peer)
[22:39] <heller\> can i do result = return impulses * sample_time / 36000.0 - and then print result ?
[22:39] <heller\> btw not working
[22:39] <ali1234> no you can't do anything after you return
[22:39] <heller\> output is 0.1 watts
[22:39] * kayatwork (~kayfox@orca.zerda.net) has joined #raspberrypi
[22:40] <ali1234> math is probably wrong, check it
[22:41] <ali1234> oh i see the mistake
[22:42] * leichtgewicht (~leichtgew@pd284edba.osaknt01.ap.so-net.ne.jp) Quit (Remote host closed the connection)
[22:43] <heller\> hmm
[22:43] <heller\> i dont :p
[22:44] * MageJames (~Magejames@cpe-71-75-59-40.carolina.res.rr.com) has joined #raspberrypi
[22:45] <jasabella> i wonder what would happen if i did a netinst off the base system on my desktop, dpkg --get-selections >foo and then dpkg --set-selections <foo on the r-pi
[22:45] <jasabella> (after a full raspbian install)
[22:45] <ali1234> http://pastebin.com/tV9JpDkm
[22:45] <ali1234> fixed
[22:46] * kayatwork (~kayfox@orca.zerda.net) Quit (Ping timeout: 265 seconds)
[22:46] <heller\> lets see
[22:47] <heller\> why 360.0 not 360?
[22:47] <ali1234> because impulses and sample_time are integers
[22:48] <ali1234> you need the .0 to get a float result from the division
[22:48] <heller\> ok
[22:48] * Mikelevel (~MoVeWoRk@unaffiliated/mikelevel) Quit (Quit: Mikelevel)
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[22:48] * MageJames (~Magejames@cpe-71-75-59-40.carolina.res.rr.com) Quit (Remote host closed the connection)
[22:49] <heller\> im now getting 10W resuts
[22:49] <ali1234> yeah
[22:49] <heller\> results*
[22:50] <heller\> its blinking at about once a second
[22:50] <ali1234> yeah it's still wrong :(
[22:51] <heller\> hmm
[22:51] <ali1234> hah
[22:51] <ali1234> derp
[22:51] * iamjarvo (~textual@c-69-249-187-177.hsd1.pa.comcast.net) has joined #raspberrypi
[22:51] * Wec is now known as WecAFK
[22:52] <heller\> i was thinking some easy solution like check amount of increment in 60 seconds and then divide it by 10000 :p
[22:52] <heller\> ali1234: where are you from? if i may ask
[22:52] <ali1234> stupidland apparently
[22:52] <ali1234> try this http://pastebin.com/rLNHq4xP
[22:52] <heller\> eh
[22:53] * kayatwork (~kayfox@orca.zerda.net) has joined #raspberrypi
[22:53] * leandro (~leandro@179.179.97.109) Quit (Ping timeout: 252 seconds)
[22:53] <heller\> trying
[22:54] <heller\> outut is 360.0W
[22:54] <heller\> output*
[22:55] <ali1234> that's right if it is flashing once per second
[22:55] <ali1234> that's 3600 times per hour
[22:55] <ali1234> 10000 times in approx 3 hours
[22:56] <heller\> ill change it to 1.3s
[22:56] <heller\> delay i men
[22:56] <heller\> mean
[22:56] <ali1234> 1.3s? why?
[22:56] <heller\> trying
[22:56] <ali1234> oh you have it hooked toa test rig?
[22:56] <heller\> i mean i have now an arduino as the "wattmeter" :p
[22:56] <ali1234> i see
[22:57] <ali1234> you know that an arduino is far far better suited to this task right?
[22:57] <SpeedEvil> I did a silly thing.
[22:57] <ali1234> it has a hardware counter
[22:57] <SpeedEvil> Point a webcam at the meter.
[22:57] <ali1234> and then OCR the digits?
[22:57] <SpeedEvil> Now, use mencoder to encode from this to a 1*1 raw video
[22:57] <Peanut> Thanks, I'm off to bed, goodnight.
[22:57] <SpeedEvil> -vf crop
[22:57] * Peanut (boven@loopy.jive.nl) has left #raspberrypi
[22:57] <SpeedEvil> And then use awk to process this.
[22:58] <ali1234> ah just extract the 1 pixel of the LED?
[22:58] <SpeedEvil> Worked great
[22:58] <SpeedEvil> yes
[22:58] <ali1234> overkill
[22:58] <heller\> awesome :D
[22:58] <SpeedEvil> Sure - but it cost 3 quid, and I had everything I needed
[22:58] <heller\> ali1234: arduino is no option here
[22:58] <ali1234> i used an AVR with a photodiode connected to the hardware counter
[22:58] <ali1234> but i have nowhere to plug it in near the meter
[22:58] <ali1234> so it's sitting in a box right now
[22:59] <SpeedEvil> Why do you need to plug it in?
[22:59] <ali1234> because it needs electricity to work
[22:59] <heller\> SpeedEvil: how did you do it actually?
[22:59] <SpeedEvil> heller\: ?
[22:59] <ali1234> and i am too lazy to change the batteries once a year
[22:59] <SpeedEvil> heller\: basically that way
[22:59] <heller\> SpeedEvil: could you be more specific? on what stuff should i look upon to replicate your thing :p
[23:00] * kayatwork (~kayfox@orca.zerda.net) Quit (Ping timeout: 250 seconds)
[23:00] <heller\> ali1234: it seems to work
[23:00] <heller\> at 300ms delay on blinks it gives over 1kWh
[23:01] <heller\> now i need to output it to a file :)
[23:02] <SpeedEvil> heller\: seeing if I can find it
[23:02] * ecogiko (~ecogiko@unaffiliated/ecogiko) Quit (Quit: leaving)
[23:02] <heller\> 500ms delay is 712W
[23:02] * Dragonkeeper (~dragonkee@cpc2-gill2-0-0-cust69.20-1.cable.virginm.net) has joined #raspberrypi
[23:03] <ali1234> the question is whether it can keep up with really high rates
[23:03] <heller\> lets test it
[23:03] <heller\> you said 22ms for 15kWh
[23:03] <heller\> ?
[23:04] <heller\> its now 5ms on and 22ms off
[23:05] * Gathis (~TheGrey@unaffiliated/gathis) Quit (Remote host closed the connection)
[23:05] <ali1234> thats 27ms...
[23:06] <heller\> changed
[23:06] <heller\> with 22ms it gave me 13314W
[23:07] * kayatwork (~kayfox@orca.zerda.net) has joined #raspberrypi
[23:07] * relyt (~relyt@50-195-216-99-static.hfc.comcastbusiness.net) has joined #raspberrypi
[23:07] * Lope (~Lope@196-210-9-217.dynamic.isadsl.co.za) has joined #raspberrypi
[23:09] <Lope> can anyone pls tell my why my IPTABLES isn't forwarding the port? (2 lines of IPTABLES not working) http://codepad.org/fBiLOVcR
[23:10] <heller\> 27ms gives me 11242W
[23:10] <heller\> no, 11232W
[23:10] <ali1234> yes, try 17
[23:11] <heller\> ok
[23:11] <heller\> what should it be?
[23:11] <ali1234> 15000
[23:11] <ali1234> because 17 + 5 = 22
[23:11] <heller\> right
[23:12] <heller\> ali1234: if i fall asleep, ill thank you now :P
[23:12] * user1138 (~user1138@unaffiliated/user1138) Quit (Ping timeout: 255 seconds)
[23:12] <heller\> you're awesome!
[23:13] <heller\> or are you: 166332W
[23:13] * utack (~utack@ip923464f1.dynamic.kabel-deutschland.de) has joined #raspberrypi
[23:13] <ali1234> wat
[23:13] <ali1234> extra digit?
[23:13] <heller\> oops
[23:13] <heller\> 16332.0
[23:13] <ali1234> well there is some rounding involved
[23:14] * kayatwork (~kayfox@orca.zerda.net) Quit (Ping timeout: 252 seconds)
[23:14] <heller\> its over 1kWh wrong :p
[23:14] <ali1234> 1 hour / 22 milliseconds = 163 636.364 so it is pretty close
[23:14] <heller\> you said 15000 :)
[23:15] <SpeedEvil> heller\: mplayer -framedrop tv:// -tv width=120:height=160:driver=v4l2:brightness=0:contrast=0:outfmt=yuy2:fps=10 -vf crop=5:5:65:123 -vo pnm:subdirs=frames.yuyv.`date +%s`:maxfiles=1000:ascii -frames 1000
[23:15] <SpeedEvil> err - not that one
[23:15] <SpeedEvil> heller\: mencoder tv:// -tv device=/dev/video0:width=160:height=120:outfmt=y8:fps=10 -vf format=y8,crop=1:1:75:33,harddup -nosound -o test.raw -of rawvideo -ovc raw
[23:15] <ali1234> try 19 on 5 off, that should give exactly 15000W
[23:16] <ali1234> i can't math today for some reason
[23:16] <SpeedEvil> Open video fevice with 160:120, format greyscale only, 10fps, filter it to 1:1 pixel in the apprpriate size - hardup makes it exactly 10fps even if missing frames, nosound is obvious , rawvideo makes it a raw video stream, and ovc raw tell sit ti just dump a file raw
[23:16] <heller\> ali1234: ill try that and then 23/2 to see if it makes any difference
[23:17] <greyscale> I AM SUMMONED
[23:17] <greyscale> WRONG NUMBER?
[23:17] * chod (~chod@toy-town.demon.co.uk) has joined #raspberrypi
[23:17] <greyscale> *back into genie bottle*
[23:17] * DLSteve (~DLSteve@c-73-7-226-217.hsd1.ga.comcast.net) Quit (Ping timeout: 276 seconds)
[23:17] <heller\> haha
[23:17] <SpeedEvil> Actually, double false alarm, I don't think y8 is greyscale
[23:18] <ali1234> it is
[23:18] <greyscale> :A Stahp.
[23:18] <ali1234> y = luma
[23:18] <heller\> :)
[23:18] * Keanu73 (~Keanu73@unaffiliated/keanu73) Quit (Quit: Leaving)
[23:18] <heller\> 14967.0
[23:18] <heller\> ill see for one more result
[23:18] <heller\> then 23/2 and then sleep
[23:19] <heller\> way too long up already
[23:19] <ali1234> 23 off 2 on = 25ms
[23:19] <ali1234> should give 14400W
[23:20] * DimeBag (~llorllale@179.53.84.165) has joined #raspberrypi
[23:21] <ali1234> try changing the sample_time as well
[23:21] <ali1234> it should become more accurate with a longer time
[23:21] <ali1234> but obviously it takes longer :)
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[23:21] * llorllale (~llorllale@179.52.229.190) Quit (Ping timeout: 250 seconds)
[23:21] <heller\> its now 22/2
[23:22] <heller\> gives me 13854.0
[23:22] <ali1234> this isn't going to be super accurate with python
[23:22] <ali1234> i could miss impulses if it is not fast enough
[23:23] <ali1234> also it will never sample for exactly the sampling period
[23:23] <heller\> true
[23:24] <SpeedEvil> ali1234: you don't sample like that
[23:24] <ali1234> what you really want to do is measure the time between consecutive impulses
[23:24] <SpeedEvil> you watch each pulse, and then compute power since last pulse
[23:24] <ali1234> right
[23:24] <SpeedEvil> And if you're lazy, you then treat it as power till next pulse
[23:25] * giddles (~sag@unaffiliated/giddles) Quit (Ping timeout: 245 seconds)
[23:25] <SpeedEvil> The above is great as it offloads all the timeing to mplayer, and you simply parse the output file at your leisure.
[23:25] <heller\> well at this opint im happy with ths :)
[23:25] <SpeedEvil> :)
[23:25] <SpeedEvil> Of course...
[23:26] <heller\> ill have test sample rates etc tomorrow :)
[23:26] <SpeedEvil> http://www.ebay.co.uk/itm/Owl-CM160-USB-Wireless-Electricity-Monitor-Home-Energy-Electric-Meter-/111538447696?pt=LH_DefaultDomain_3&hash=item19f835a550
[23:26] <ali1234> AVR/arduino is MUCH better suited to this task
[23:26] <SpeedEvil> Outputs nice actual watts every six seconds
[23:26] <SpeedEvil> and has a simple documented XML format
[23:26] <heller\> thanks people
[23:26] <SpeedEvil> And supports plug sensors too
[23:26] <SpeedEvil> Wackily - they even have parts on ebay
[23:26] <ali1234> is that an inductive coupled one? cos i heard those are inaccurate too
[23:26] * MageJames (~Magejames@cpe-71-75-59-40.carolina.res.rr.com) has joined #raspberrypi
[23:27] <heller\> i am using of kind of them at moms house measuring house power usage
[23:27] <heller\> it has a wireless display
[23:27] <heller\> its ok
[23:28] <heller\> measures 3-phase
[23:28] * kayatwork (~kayfox@orca.zerda.net) Quit (Ping timeout: 245 seconds)
[23:28] <heller\> now i need to sleep. good talk!
[23:28] <heller\> night guys ->
[23:28] * ruben-ikmaak (~sikko@541F7D85.cm-5-8b.dynamic.ziggo.nl) Quit (Remote host closed the connection)
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[23:29] <ali1234> the problem with measuring power between pulses is that it's hard to get that type of accurate timing from python and you have to measure constantly or miss spikes
[23:30] <SpeedEvil> ali1234: I measured and compared with the actual meter, and got ~2% out
[23:30] <SpeedEvil> ali1234: Which is good enough for me
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[23:53] <HtheB> ali1234!
[23:53] * Lope (~Lope@196-210-9-217.dynamic.isadsl.co.za) has left #raspberrypi
[23:53] <ali1234> HtheB: !
[23:53] <HtheB> how are you
[23:53] <ali1234> fine, fine
[23:53] <HtheB> me, bad bad
[23:53] * relyt (~relyt@50-195-216-99-static.hfc.comcastbusiness.net) Quit (Quit: My Mac has gone to sleep. ZZZzzz…)
[23:54] <ali1234> why?
[23:54] * OffensiveUser (~Offensive@5ED3D4A2.cm-7-4d.dynamic.ziggo.nl) has joined #raspberrypi
[23:54] <HtheB> as you know, I failed to do the potentiometer to change brightness of the pitft
[23:54] <HtheB> so, I was thinking to use buttons instead
[23:55] <HtheB> the PiTFT comes with 4 buttons below the screen
[23:55] <HtheB> at the moment, the first button is set to "shut down"
[23:56] <HtheB> I was thinking: can I change it to use the first 2 buttons to change brightness, and the other 2 buttons to change volume?
[23:56] * iamjarvo (~textual@c-69-249-187-177.hsd1.pa.comcast.net) has joined #raspberrypi
[23:56] <ali1234> not really
[23:57] <ali1234> you can only turn the backlight on and off in software
[23:57] <HtheB> >.<
[23:57] <HtheB> see, thats why i feel bad :P
[23:57] <ali1234> you could turn it on and off very fast but that will be hard on the cpu
[23:57] * Vutral (~ss@mirbsd/special/Vutral) Quit (Ping timeout: 256 seconds)
[23:57] <ali1234> just fix that 555 circuit
[23:57] <HtheB> :D :D :D
[23:58] <HtheB> I've done everything like you saw
[23:58] <HtheB> but it didnt work
[23:58] <ali1234> did you turn off the backlight in the controller?
[23:58] <HtheB> yup, but somehow, it doesnt turn off (anymore?)
[23:58] * x1337807x (~x1337807x@c-76-115-7-194.hsd1.or.comcast.net) Quit (Quit: My MacBook Pro has gone to sleep. ZZZzzz…)
[23:58] <ali1234> okay so the 555 circuit is keeping it turned on
[23:58] <HtheB> let me see if it does now (I removed that 555 circuit board)
[23:58] <ali1234> maybe you connected the potentiometer wrong?
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[23:59] <HtheB> wanna see live broadcast?
[23:59] <ali1234> not really, you can just tell me what happens...
[23:59] <HtheB> ok
[23:59] <ali1234> i can't see anything from a low res video feed anyway

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