**** BEGIN LOGGING AT Thu Sep 11 02:59:58 2014 Sep 11 08:04:28 Could you please recommend parts that would enable me to connect 2 small cameras to one Beagleboard. The cameras would be used to capture still images in close succession (not at the same time). I need this for stereoscopic vision which will enable a program to calculate distance. Sep 11 08:05:21 i would build my own cape for something like this Sep 11 08:05:37 put two cameras on it, trigger them at the same time, read data Sep 11 08:06:11 or a usb hub, 2 usb cameras and some tinkering to make it work. Sep 11 08:06:52 pffft! Sep 11 08:06:55 LetoThe2nd: always going for the cheap solutions, are we? Sep 11 08:06:55 can no existing cape do this? Sep 11 08:07:05 * KotH does not know all capes Sep 11 08:07:16 actually, i dont know any cape Sep 11 08:07:19 KotH: i personally not, but most people here are going for the cheap-no-effort-solutions. don't you think? Sep 11 08:08:53 i am not after cheap ... if it needs to beagebones, I will do that but somehow I think one might be simpler and i want simple Sep 11 08:09:23 sorry i meant to say "two beaglebones" Sep 11 08:09:59 well connecting two cameras when they're not COTS usb stuff that "jsut works" is probably nowhere simple. Sep 11 08:10:09 and will include custom hardware, IMHO Sep 11 08:10:57 Rick_: hmm.. you are on the wrong continent Sep 11 08:11:10 Rick_: otherwise i would have recommended you a company that could help you Sep 11 08:11:47 Rick_: what is your technical background? what kind of project is this? what is your budget? Sep 11 08:11:49 simplest solution if not usb+webcams is maybe two bbbs + http://elinux.org/Beagleboard:BeagleBone_HD_Camera_Cape Sep 11 08:12:14 i'm a newbie to bb. the pictures i find for camera capes show them directly attached to the board. Can a cable be used to extend the distance from the oard? Sep 11 08:12:34 depends on the type of interface, the distance, etc. Sep 11 08:13:00 the cape, probably not more than a few cm Sep 11 08:13:01 KotH ... budget no problem, I work it IT (software) but new to bb Sep 11 08:13:20 if budget == no problem, hire somebody with expertise. Sep 11 08:13:39 Rick_: what LetoThe2nd said Sep 11 08:14:06 Rick_: i dont know .au, but there should be companies that do this class fo electronics Sep 11 08:14:09 because depending on your requirements you might need custom hardware, and that is nothing that should be left to an it-hardware-newbie person (no offense meant) Sep 11 08:14:15 do any cameras work via serial? Sep 11 08:14:24 can this site be used to find someone with the right experience? Sep 11 08:14:31 rorriMnmaD: you mean, like rs232 at 19200bauds? Sep 11 08:14:42 rorriMnmaD: sure, we call that a fax modem Sep 11 08:15:02 haha. well i guess it depends on if you just need to control it, or if you also need to receive the data Sep 11 08:16:26 LetoThe2nd: rotfl Sep 11 08:16:49 Rick_: use this site: www.google.com Sep 11 08:17:27 sure Sep 11 08:18:01 is Raspberry PI better for 2 cameras? Sep 11 08:18:21 depends on your requirements Sep 11 08:18:47 Rick_: if you cannot find anyone, ask these guys: www.aotag.ch Sep 11 08:19:06 Rick_: but you are on the wrong continent for them Sep 11 08:19:15 Rick_: so they might not take the project Sep 11 08:20:07 i need the 2 images for range finding and i need to process the iamges in a program. cheers for the site suggestion Sep 11 08:21:01 Rick_: that might be a passable project description, but it is in no way a description of your requirements Sep 11 08:23:45 A little hard to explain the project reqs in one line of a blog Sep 11 08:25:22 Rick_: good thing this isnt a blog :) Sep 11 08:27:16 ok ... a chat then Sep 11 08:30:35 Rick_: btw: if you contact aot, tell them i say hi :) Sep 11 08:32:54 just looking at their site ... they should be able to do this ... and i will say hi from KotH ... will they know who you are? Sep 11 08:33:05 Rick_: yes Sep 11 08:33:11 Rick_: i worked there until recently :) Sep 11 08:34:47 cheers. must go. thank for the tip KotH Sep 11 11:19:42 greetings, can I get help here on BBB with ubuntu/kde installed as per the elinux site? Sep 11 11:20:22 iomari: ask about the specific problems you have. if somebody then knows, you will get an answer. Sep 11 11:22:29 hm why a heavy desktop like kde on embedded platform? Sep 11 11:23:02 I have installed ubuntu/kde as instructed on the site above. On my initial boot after installation, I am suppose to login as ubuntu:ubuntu but the log in screen only has "demo usr" and "guest". Sep 11 11:23:53 "demo user"'s password is unknown and guest has no password. Sep 11 11:24:08 iomari connect serial console, change kernel cmdline to use init=/bin/sh or /bin/bash Sep 11 11:24:09 iomari: you didn't give a specific link for us to check. and if you used some non-official image, nobody knows what setting might be hidden in that. Sep 11 11:24:14 reset all passwds you want Sep 11 11:24:30 proably needs mount -o remount,rw / Sep 11 11:24:53 or loop moun the image Sep 11 11:25:01 ups loop mount the image Sep 11 11:25:12 change or remove passwds und reflash Sep 11 11:54:02 sorry, I was on the phone. here are the 2 links I used to install ubuntu/kde: Sep 11 11:54:09 http://elinux.org/Beagleboard:Desktops_On_Ubuntu/Debian#Ubuntu_Precise_On_A_microSD_With_Ubuntu_Desktop Sep 11 11:54:10 http://elinux.org/Beagleboard:Ubuntu_On_BeagleBone_Black#Ubuntu_Precise_On_Micro_SD Sep 11 11:56:39 iomari: sounds like some rather obscure image.. i think you should better start off with http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Debian_Releases Sep 11 11:59:18 LetoThe2nd: The ubuntu image is from the same site as the debian image. We chose ubuntu because it has a much "nicer" looking frontend which the client preferred. But I'll look into the debian. Sep 11 11:59:39 o.O Sep 11 11:59:54 a heavy kde desktop for gui frontend? Sep 11 11:59:58 come on man Sep 11 12:00:00 iomari: of course you're free to chosse whatever you like, but from experience the debian images see *a lot* more maintenance and care. Sep 11 12:00:18 iomari: plus, i also think that kde on the BBB is a rather bad idea. Sep 11 12:00:25 woglinde: just a test, we actually wil be using one of hte lighter ones. Sep 11 12:00:52 just for the test I would a lighter one Sep 11 12:00:56 +use Sep 11 12:01:25 however, the site warns that lxde is unstable. Any suggestion on a another one? Sep 11 12:01:50 linke xfce? But I can't find that image Sep 11 12:02:04 iomari depends on your widgetkit and if you have single application or not Sep 11 12:02:16 why image? Sep 11 12:02:16 oO(you wanted kde and think that lxde is unstable?!?) Sep 11 12:02:20 use a base image Sep 11 12:02:24 and apt-get install Sep 11 12:02:28 my my Sep 11 12:03:02 apt-get install which desktop? Sep 11 12:03:38 blackbox or openbox Sep 11 12:03:49 you can open a console Sep 11 12:03:58 and run your app from there Sep 11 12:04:20 or you do not use windowmanager at all Sep 11 12:04:30 and use qt or grk directly Sep 11 12:04:35 via framebuffer Sep 11 12:04:39 ups gtk Sep 11 12:05:11 do not forget bbb is mainly embedded not pc replacement Sep 11 12:05:41 woglinde: understood. I think I look into the options you recommend. Sep 11 12:09:51 How can I get the original Angstrom linux back? Sep 11 12:11:01 download the image? Sep 11 12:11:15 but Angstroem for bbb is no longer maintained Sep 11 12:12:08 ok Sep 11 12:12:22 the last known angstrom images should be on beagleboard.org Sep 11 12:16:52 LetoThe2nd: Is the base version of ubuntu a better choice than Angstrom? Sep 11 12:16:53 I mean debian vs Angstrom Sep 11 12:17:52 iomari: "better" depends on what you want to do. all i'm saying is that the debian images are what is currently, officially supported. Sep 11 12:19:17 Oh, I didn't know that. Then why does it ship with Angstrom? Sep 11 12:19:57 iomari: it is not supposed to be shipped with angstrom since a few months. back when angstrom still had the "supported" state Sep 11 12:20:43 I C. I guess I will download the debian now. Thanks. Sep 11 12:39:17 can I use BBB-eMMC-flasher-debian-7.6-lxde-armhf-2014-09-03-2gb.img without flashing? I already have this image and I really don't want to download another if I don't have to. Sep 11 12:39:37 iomari: "flasher" means "flasher" Sep 11 12:40:02 <_av500_> flash! aahhhaaaa Sep 11 12:40:53 I gues that's a no then. Ok then I guess I'm back to downloading again................. Sep 11 12:46:14 if I flash the eMMC will the sd card become redundant? Sep 11 12:46:38 not redundant. it will still do what its intention is, whenever you boot it. Sep 11 12:46:38 <_av500_> in a way yes Sep 11 12:47:10 the 2 replies don't mix well. Sep 11 12:47:17 <_av500_> stir Sep 11 12:47:30 :-) Sep 11 12:48:12 let me rephrase. What purpose will the sd serve? Sep 11 12:48:30 <_av500_> for the BBB, none Sep 11 12:48:35 <_av500_> it will boot from emmc Sep 11 12:48:45 <_av500_> you can store cat pictures on it or sp Sep 11 12:48:46 <_av500_> so Sep 11 12:48:55 can it be used as data space for applications? Sep 11 12:49:05 <_av500_> sure Sep 11 12:49:28 good. no prob then. Let me flash away........... Sep 11 12:50:02 So after I flash, I can reformat it? Sep 11 12:56:17 yes Sep 11 13:10:18 I just boot the sd flash image. I have alter the boot/uEnv.txt file according. During the screen scrolling, it has stopped with the last line saying "mmcblk1: inknown partition table". However the boot lights are still flashing. AM I in toruble or should I just wait? Sep 11 13:11:04 why do you think you need to alter anything on the default images? Sep 11 13:11:51 Actuall I didn't but the site said I should unrem this ilne "#cmdline=init=/opt/scripts/tools/eMMC/init-eMMC-flasher-v3.sh" whihc was already unremmed. Sep 11 13:12:36 site said? where? what? Sep 11 13:12:45 progress. another line now says "mmcblk1: p1 p2" Sep 11 13:13:18 i admit, that sounds like you are randomly mixing up various instructions. Sep 11 13:14:11 fronm this site which I was directed to from beagleboard site: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Flashing_eMMC Sep 11 13:14:50 *sigh* Sep 11 13:15:14 iomari: read it again. it says: "if you want to use the standard image to flash, then change." Sep 11 13:15:14 What? AM II doing something stupid? Sep 11 13:15:28 iomari: if you want to use the flasher to flash, do nothing. Sep 11 13:15:48 iomari: if you want to use the standard image to boot from the sd card, do nothing. Sep 11 13:16:31 Well I did nothing but check the file so I guess I'm ok. I understand now. Sep 11 13:16:34 I hope. Sep 11 13:16:58 iomari: lesson: you also have to read the text between the code snippets and such. Sep 11 13:17:32 I did, I was just seeing what I wanted to see. Thanks. Sep 11 13:17:53 I;m very tired. Havent slept in a while. Sep 11 13:19:53 how much space will I have free on the eMMC after the flashing finishes? Sep 11 13:22:27 and btw, If I rem out that line on the eMMC image, will that work as a standalone image? Sep 11 13:22:42 iomari: on the classic one, not much. maybe something 100mb. on the revc(4gb), should be 2gb+x Sep 11 13:23:48 LetoThe2nd: cool, thanks. Sep 11 13:23:51 I guess I will definitely be using the sd as storage then. Sep 11 13:55:45 Sorry, lost my link. The flashing has finished. I've rebooted now and I'm ok. Now I have to install the libs for the chipsee screen. I pray it all works. Any useful tips? Sep 11 14:42:01 <_av500_> praying is fine Sep 11 14:44:01 when we connect the beagle bone black, we get a network interface via the usb, how does the BBB does that ? it is simply "software" or "hardware" Sep 11 14:44:14 I mean, the raspberry pi can't do that I presume ? Sep 11 14:44:41 anyway, if anyone have a documentation I can read to learm more about how the BBB does that, I would appreciate :) Sep 11 14:44:43 thank you Sep 11 14:45:21 acidfu: your google buzzwords are "usb gadget ethernet" Sep 11 14:46:01 acidfu: And no, the Pi cannot do that because they did not route traces to the data pins on the USB connector AFAIK. Sep 11 14:46:38 I'm trying to follow the instructions so the chipsee display works. "sudo apt-get install gcc-arm-linux-gnueabi git ccache libncurses5-dev u-boot-tools lzma" this produces "E: Unable to locate package gcc-arm-linux-gnueabi". any suggestions Sep 11 14:47:08 ok Sep 11 14:48:59 iomari: Did you update your package cahce before running that? Sep 11 14:50:33 http://www.chalk-elec.com/?p=1605#comment-732557487 Sep 11 14:51:02 Yeah, not clicking on that at work. Sep 11 14:51:36 iomari: well if you bought something that comes without proper software support, and documentation that is like 2 yrs old... good luck. Sep 11 14:58:51 LetoThe2nd: yes I updated and upgraded Sep 11 15:02:39 Can anyone point me to a reliable site that documents how to use the chipsee display with BBB/debian? Sep 11 15:03:16 iomari: i'd say that is the duty of chipsee/chalk-elec. they sold it. Sep 11 15:08:04 * Nemesis][ wonders why his BB-xm still clocks at 800 instead of 1000... I've followed the steps on eewiki.net by Robert Nelson and successfully compiled the bootloader and kernel. Supposedly the errata patch by teknoman117 (0001-hack-omap-clockk-dpll5-apply-sprz319e-2.1-erratum-co.patch) reenables dynamic voltage control so it can run a 1GHz. I modded uEnv.txt to enable dts boot and forced it to use omap3-beagle-xm.dtb. Anyone know if I'm missing somet Sep 11 15:08:11 * Nemesis][ hing? Sep 11 15:58:10 Hi Sep 11 15:58:14 how to disable hdmi to enable spi? Sep 11 15:58:20 I have problem with spi oled Sep 11 15:59:03 echo BB-SPI1-01 > /sys/devices/bone_capemgr.9/slots Sep 11 15:59:03 bash: echo: write error: File exists Sep 11 16:05:18 ah spi0 works nvm Sep 11 16:10:52 hey, has anyone played with PRU -> SPI? Sep 11 16:19:11 im surprised anybody really uses theese prus ... would you mind explaining what ure doing with them? :) Sep 11 16:19:41 (i am completely aware what theese prus could possibly be used for. they just dont exactly look like sth thats easy to use ... like an avr or sth) Sep 11 16:20:09 im trying to feed a dac 30k times a second Sep 11 16:20:59 im pretty sure the bbbs "own" spi can do that ... Sep 11 16:21:02 30 khz isnt too much Sep 11 16:22:07 (just trying to help. im pretty sure u could do that using the prus) Sep 11 16:22:13 beep Sep 11 16:22:24 whoa, my message got deleted Sep 11 16:22:33 mb too long? Sep 11 16:22:48 .. i started with /dev which is no command.. Sep 11 16:23:23 ./dev/spidev (and ioctl) doesnt go much faster than 3k (single 16bit) messages / sec, with direct memory access I can get ~35k Sep 11 16:23:25 25* Sep 11 16:25:18 this is weird as even the tutorial at elinux.org uses 500khz ... Sep 11 16:25:36 (did not test this myself though. im more of an i2c fan) Sep 11 16:27:04 could you link me to that? Sep 11 16:27:23 sure Sep 11 16:27:26 http://elinux.org/BeagleBone_Black_Enable_SPIDEV Sep 11 16:28:22 well, I'm using 8MHz to transfer the data, but I can't get much more than ~10k single 16bit messages / sec Sep 11 16:28:34 im sure you could do fewer messages but more data.. Sep 11 16:49:45 gurki anyway, the PRUs seem like the perfect thing to use for what I want to achieve.. Sep 11 18:56:09 well this edison thing is a bit of a raspberry PI killer Sep 11 19:07:18 what edison thing? Sep 11 19:12:52 mrpackethead, except is has no video that I'm aware of although i havent found a proper TRM yet Sep 11 19:13:04 no video. Sep 11 19:13:11 and effectively, its a beagle killer too Sep 11 19:13:22 yeah. Sep 11 19:13:46 but there are so may apps that dot' need video. Sep 11 19:13:52 they give a ton of punch for $50 Sep 11 19:13:54 no "real" ethernt. Sep 11 19:14:12 so, if you need wired ethernet, it will be a Low speed SPI based thing. Sep 11 19:14:18 the murata wifi for one is technically worth $50 Sep 11 19:14:25 yup Sep 11 19:14:44 this IOT is driving devlopment at a pace that is crazy Sep 11 19:14:53 its great Sep 11 19:15:24 but all the beagles etc has finally awoke the sleepign giant Intel Sep 11 19:15:36 yes. in deedly. Sep 11 19:15:49 im still partial to ARM Sep 11 19:16:00 x86 instruction set is still a ton of bloat Sep 11 19:16:50 but in the end im not sure how thatreally applies to me. and technically i guess it doesnt Sep 11 21:46:44 So does anyone know if Debian can be installed on a BBB with full disk encryption? Sep 11 21:47:04 hmm Sep 11 21:47:40 i bet you might be able to get that option if you hook it up to a monitor during installation Sep 11 21:48:19 hello, I am writing an article and one of topics is "Java Web Containers" Sep 11 21:48:25 I'll have to try that. I'm sure the install will go fine, it's more of if the bootloader will know how to boot it Sep 11 21:49:04 I want to do a secure messaging platform for my BBB, but if I can't have FDE on it, the project will be a bust :/ Sep 11 21:49:18 I need talk about the main Java Web Container for use on Beagle Bone Black Sep 11 21:49:32 someone has a material? Sep 11 21:49:56 well...if the boot loader cant boot to it...the worst thing that can happen is you reinstall Sep 11 21:50:02 on a rev c Sep 11 21:50:21 or indications.. :) Sep 11 21:50:25 at least...i know the boot loader looks for the u file on the sd card before booting to "disk" Sep 11 21:50:54 Right, I'll have to try it when I get home and am not on public transit Sep 11 21:52:13 I'll be sure to report back here about it, pass around the knowledge :) Sep 11 21:52:19 IDrinkMilk: i don't think u-boot can support encrypted partitions, so that will at least have to be on an unencrypted filesystem Sep 11 21:52:46 IDrinkMilk: probably the kernel + initrd will have to remain unencrypted as well Sep 11 21:53:10 has any one tried putting a different bootloader on the bbb? Sep 11 21:53:58 Ah. So put the /boot onto a seperate partition and tell it to boot an LVM container? I know how to do thay Sep 11 21:54:20 It's how my laptop unfortunately is partitioned :) Sep 11 21:55:14 IDrinkMilk: yup. Sep 11 21:55:58 dunno if that meets your needs for "full" disk encryption Sep 11 21:56:09 Awesome, will be sure to try this tonight Sep 11 23:02:25 is there a way to interrupt the u-boot sequence Sep 11 23:02:28 on the bbb Sep 11 23:05:50 blah Sep 11 23:11:37 need some I2c help Sep 11 23:11:46 hm Sep 11 23:13:28 I have a TNC-black that I was having issues with on the serial UART and was going to try the I2C Sep 12 01:22:06 hey Sep 12 01:22:19 i have some doubts\ Sep 12 01:22:24 regarding beaglebone Sep 12 01:22:36 can anybody help me Sep 12 01:23:19 i doubt your 'doubts' never ask to ask, just ask Sep 12 01:26:17 My BB board only some time getting connected to server Sep 12 01:26:38 it used to pop up memory card content but not connecting Sep 12 01:27:15 I have loaded cloud 9 OS image Sep 12 01:27:17 the easy way to debug that is grab a usb-serial cable and see what it's doing.. Sep 12 01:28:04 how to use save ADC settings in beagleboen. Sep 12 01:28:05 ? Sep 12 01:28:22 every time i stsrt the board i need to enable it for to use Sep 12 01:28:33 same in case of setting the pjava path Sep 12 01:28:43 my bbb rev c powers up with a fixed ip address of 192.168.7.2 when i have the usb plugged in, but obtains its address via dhcp when not. how can i change this behavior? Sep 12 01:28:49 init script or add to your enviroment.. Sep 12 01:29:26 yates change the value in /etc/network/interfaces and /opt/scripts/boot/am335x_evm.sh Sep 12 01:30:07 rcn-ee: thanks! Sep 12 01:30:58 is am335x_evm.sh run somehow as part of init? Sep 12 01:32:11 yates, it's called by an init script, to do board specific checks, you can view the git version here: https://github.com/RobertCNelson/boot-scripts/blob/master/boot/am335x_evm.sh Sep 12 01:32:59 rcn-ee: are you robert c. nelson? Sep 12 01:33:24 what gave that away. ;) Sep 12 01:33:38 your accent :) Sep 12 01:33:56 i used one of your distros over a year ago - linaro, i believe - very nice! Sep 12 01:34:16 for the bb-xm Sep 12 01:34:27 thank you. Sep 12 01:35:51 i've also noticed that, if i boot without the usb plugged in, the os appears to consistently die within 5 minutes (i think - haven't timed it). any idea why? Sep 12 01:36:23 that is, it gets the dhcp-assigned address just fine, i can ssh in just fine, but then the terminal goes dead after just a few minutes. Sep 12 01:36:46 using the debian distro, btw. Sep 12 01:38:01 only if it's a bad power supply.. have you tried upgrading the kernel: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Kernel_Upgrade ? Sep 12 01:39:10 is this old? Linux beaglebone 3.8.13-bone50 #1 SMP Tue May 13 13:24:52 UTC 2014 armv7l GNU/Linux Sep 12 01:39:35 compared to what? Sep 12 01:40:09 we are shipping "bone64" lots of little fixes since bone50 Sep 12 01:40:34 ok, i'll upgrade. Sep 12 01:41:31 nothing really related to ethernet.. i've been mostly pounding on v3.14, so v3.8 doesn't get tested by me much anymore Sep 12 01:42:46 software question: i have an application that will be repetitively reading about 15 GPIOs every 100 milliseconds. Sep 12 01:42:58 and i was going to use this technique to configure and read them: http://www.armhf.com/using-beaglebone-black-gpios/ Sep 12 01:43:09 you should just have the pru do that.. Sep 12 01:44:06 programmable real-time unit? Sep 12 01:44:38 isn't that essentially a coprocessor? Sep 12 01:44:40 small mcu: http://elinux.org/ECE497_BeagleBone_PRU Sep 12 01:45:48 another good one, with gpio: http://boxysean.com/blog/2012/08/12/first-steps-with-the-beaglebone-pru/ Sep 12 01:46:28 is reading those at a 10 Hz rate going to be too fast for regular user-space code? Sep 12 01:47:21 you can do it in user-space, but it's nice to offload that to something else.. Sep 12 01:48:25 stops ya main processor loop bein tied up in io Sep 12 01:49:00 i was doing this in other thread(s) than the main thread. Sep 12 01:49:05 doing pthreads Sep 12 01:49:18 (was going to...) Sep 12 01:50:10 using gnu g++ 4.7 and mostly the standard posix stuff. Sep 12 01:53:42 thanks for all the info, rcn-ee - gold mine! Sep 12 01:54:42 ok must sleep .. nite all Sep 12 01:56:23 is there an outline of the debian/bbb init process? is it the new systemctl thingie or still the old sysV ? Sep 12 01:57:44 (i'm coming from a fedora-centry POV) Sep 12 01:57:51 s/centry/centric/ Sep 12 01:59:12 it's both... systemd runs any scripts under /etc/init.d/ that don't have a service file **** ENDING LOGGING AT Fri Sep 12 02:59:58 2014