[beagleboard] BBB frozen with mjpg-streamer
Guido did you figure this out? Also can't get mjpg-streamer working on latest debiam image although did before on angstrom. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Selling my extra BBB
Just an update if you're looking for a BBB this one will go tonight and I'll be shipping it out tomorrow. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] Selling my extra BBB
Hope this is appropriate to post here. I have two BBBs and not using this second one at the moment. I put it on eBay here in case anyone wants to pick it up. I'm going to get a Rev C when they're available so I can put Charles' machinkit on the eMMC, meanwhile if you can use this, check it out: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem=321380413293 -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Re: why update eMMC?
Just a typo on my part. Think I might have been reading about omap versions or something. The Sparkfun link said rev C and so should I have. On Apr 8, 2014 9:25 AM, Gerald Coley ger...@beagleboard.org wrote: I don't know anything about a Rev D. All I was told about was a Rev C. http://www.elinux.org/Beagleboard:BeagleBoneBlack#Revision_C_.28Pending.29 Gerald On Mon, Apr 7, 2014 at 6:33 PM, michael.du...@gmail.com wrote: There is an announced Rev C: http://elinux.org/Beagleboard:BeagleBoneBlack#Board_Revisions_and_Changehttp://elinux.org/Beagleboard:BeagleBoneBlack#Board_Revisions_and_Changes s -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to a topic in the Google Groups BeagleBoard group. To unsubscribe from this topic, visit https://groups.google.com/d/topic/beagleboard/J9FaJx2AC2o/unsubscribe. To unsubscribe from this group and all its topics, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Re: why update eMMC?
I'm thinking to use Charles S's MachineKit LinuxCNC image, which occupies 4G and would like to run it from the eMMC rather than an SD card, with card dedicated to machine/print job files. I was a little annoyed (but happy) to hear that there's a 4G revD board shipping soon, at least according to Sparkfun here: https://www.sparkfun.com/products/12857 Is this true? If so, is it a clone or original BBB revision? Why not mention plans for the new rev in either this or the out of Stock thread? Anyway, happy it's coming if true. On Friday, March 7, 2014 1:51:05 PM UTC-5, ivan_n wrote: My builroot rootfs, with QT, opencv, some boost libraries, python, a small webserver and other amenities uses only 10% of that 2GB. On Thu, 6 Mar 2014 09:52:26 -0600 Gerald Coley ger...@beagleboard.org javascript: wrote: Cost. That is what a $45 board allows us to buy. 4G is more expensive than 2G, And eMMC is faster and more reliable than an SD card. Gerald On Thu, Mar 6, 2014 at 9:49 AM, Brad Hopper brad@gmail.comjavascript: wrote: I wonder why the BBB has only 2G of space in the eMMC - aren't most small boot images designed to fit in 4G? It's *great* to have onboard bootable space, just seems like it would be bigger or why bother since many/most will just end up not using it and booting from flash. On Thursday, February 13, 2014 2:48:14 PM UTC-5, Rusty Wright wrote: If I plan to only boot to the SD card, why would I want/need to flash the eMMC with the latest? This may be answered by the previous question's answer; does flashing the eMMC update the lowest level, stage 1, or whatever it's called (whatever's not in the DOS partition) u-boot code? I guess I'm assuming that the lowest level boot code is u-boot, but perhaps that's incorrect. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com javascript:. For more options, visit https://groups.google.com/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Which Real Time Operating Systems Can I run on Beagle Bone Black?
Charles any quick points or a link to something explaining what is the meaning of real time linux, especially in the context of having PRUs - I sort of had the sense that, for example in your machine kit image, the real time bits were being performed by the PRUs, so what is the reason for Xenomai? You have to run some OS of course, but if you have a dedicated subsystem that just comes up for air when it needs to inform the OS, why not just ?plain? linux? And if linux can run real time, why do you need the PRUs? maybe it's a matter of the scale of latency we're talking about. On Monday, March 31, 2014 6:08:27 PM UTC-4, Charles Steinkuehler wrote: On 3/31/2014 5:54 AM, Eren Basturk wrote: Hi All, I wonder that Is there any real time operating system to use on Beagle Bone Black? Could you give me some information about real time linux on Beagle Bone? TI has a list, but it doesn't include everything: http://www.ti.com/lsds/ti/tools-software/rtos.page ...conspicuously absent are the various non-commercial solutions. Is there something in particular you are wanting to run? -- Charles Steinkuehler cha...@steinkuehler.net javascript: -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [beagleboard] Re: Availability - how come nobody has any BeagleBone Black to sell?
BTW, just got an in stock email from Adafruit a few minutes ago and ordered one. Go get it! On Wednesday, March 19, 2014 10:21:45 AM UTC-4, dwfunk4475 wrote: Adafruit is very good with the email notification that items are now in stock. If someone is serious about buying, they can get one when the email arrives. I've used that option a number of times. -david On Wed, Mar 19, 2014 at 8:00 AM, Gerald Coley ger...@beagleboard.orgjavascript: wrote: http://www.elinux.org/Beagleboard:BeagleBoneBlack#Board_Shipments Gerald -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[beagleboard] more than one command in a script
Hey folks, just getting started here with BBB. Like many who get one of these I picked it up with a specific purpose in mind, and I want the board to start on that purpose right away... so I want to auto execute a script on startup. I'm not quite that far, and have a few tutorials to read on auto login and start. Meanwhile I'm just trying to get my script going and it won't complete because the first command starts a service, mjpg-streamer, and hogs the shell so that the next command never starts (I want to start OctoPrint). Is there some secret word like spawn, exec, start, execstart etc that will allow the first command to spawn and remain running so the second command can start? Here's the script so far (I wish I could figure how to copy to the clipboard from vim but...): https://lh5.googleusercontent.com/-0cUAUnn-WAA/UxfsmapwgwI/Ens/oST_jHtrLTI/s1600/BBBstartup.PNG by the way, the only way I know to kill this script is to hit ctrl-C, which does kill mjpg-streamer, and then OctoPrint starts, but it complains that daemon already running? I've been Googling this for a while and so far haven't uncovered what seems like it should be simple. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[beagleboard] Re: more than one command in a script
Thanks Akhil, I did see the at the end of a command in some example long ago, but it wasn't explained what it was, and honestly I thought it might be a typo :-) I'll check it out tonight! On Thursday, March 6, 2014 9:27:40 AM UTC-5, Akhil wrote: I think you want to run the first program that never returns as a background process. Here are some links on how to do that: http://www.cyberciti.biz/faq/linux-command-line-run-in-background/ http://www.thegeekstuff.com/2010/12/5-ways-to-execute-linux-command/ I think just appending an ampersand at the end of your command is what you're looking for. Cheers, Akhil On Thursday, March 6, 2014 4:41:13 AM UTC+1, Brad Hopper wrote: Hey folks, just getting started here with BBB. Like many who get one of these I picked it up with a specific purpose in mind, and I want the board to start on that purpose right away... so I want to auto execute a script on startup. I'm not quite that far, and have a few tutorials to read on auto login and start. Meanwhile I'm just trying to get my script going and it won't complete because the first command starts a service, mjpg-streamer, and hogs the shell so that the next command never starts (I want to start OctoPrint). Is there some secret word like spawn, exec, start, execstart etc that will allow the first command to spawn and remain running so the second command can start? Here's the script so far (I wish I could figure how to copy to the clipboard from vim but...): https://lh5.googleusercontent.com/-0cUAUnn-WAA/UxfsmapwgwI/Ens/oST_jHtrLTI/s1600/BBBstartup.PNG by the way, the only way I know to kill this script is to hit ctrl-C, which does kill mjpg-streamer, and then OctoPrint starts, but it complains that daemon already running? I've been Googling this for a while and so far haven't uncovered what seems like it should be simple. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[beagleboard] Watching boot without HDMI
Folks, It seems to take a while for the BBB to boot. I'm going to check out the newly posted Debian image soon, but also wanted to know if there's any way to watch the boot in a terminal i.e. without using HDMI. I don't have a micro HDMI cable and was hoping not to get one. Is there a type of terminal connection which will persist through a reboot, so that the boot sequence could be seen? Not even sure if there's anything to see, just suspected that the boot sequence spends some time waiting on xyz... where xyz is probably something I don't need. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[beagleboard] Re: why update eMMC?
I wonder why the BBB has only 2G of space in the eMMC - aren't most small boot images designed to fit in 4G? It's *great* to have onboard bootable space, just seems like it would be bigger or why bother since many/most will just end up not using it and booting from flash. On Thursday, February 13, 2014 2:48:14 PM UTC-5, Rusty Wright wrote: If I plan to only boot to the SD card, why would I want/need to flash the eMMC with the latest? This may be answered by the previous question's answer; does flashing the eMMC update the lowest level, stage 1, or whatever it's called (whatever's not in the DOS partition) u-boot code? I guess I'm assuming that the lowest level boot code is u-boot, but perhaps that's incorrect. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] Watching boot without HDMI
Great, thanks guys, truly a newb question. From some more reading regarding the J1 on the BBB, it seems OK to use a 5V FTDI board since BBB was designed with the pin corresponding to 5V being disconnected. I have some credit at Sparkfun but they actually have several versions. Plus there's the Bus Pirate as well... On Thursday, March 6, 2014 10:53:42 AM UTC-5, RobertCNelson wrote: On Thu, Mar 6, 2014 at 9:45 AM, Brad Hopper brad@gmail.comjavascript: wrote: Folks, It seems to take a while for the BBB to boot. I'm going to check out the newly posted Debian image soon, but also wanted to know if there's any way to watch the boot in a terminal i.e. without using HDMI. I don't have a micro HDMI cable and was hoping not to get one. Is there a type of terminal connection which will persist through a reboot, so that the boot sequence could be seen? Not even sure if there's anything to see, just suspected that the boot sequence spends some time waiting on xyz... where xyz is probably something I don't need. Stick a usb-serial adapter on J1 and watch the full boot process, plus the terminal is enabled, so you can use it once it boots. Regards, -- Robert Nelson http://www.rcn-ee.com/ -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
Re: [beagleboard] When to power sensors connected to the BeagleBone Black?
Maybe you can still go to the Astrodome - the eighth wonder of the world! On Thursday, March 6, 2014 10:57:57 AM UTC-5, Gerald wrote: Houston! Us folks in this part of the state try to stay away from Houston! Actually I have spent a lot of time over the years in Houston. Been to a few Astros games as well. Gerald On Thu, Mar 6, 2014 at 9:55 AM, Matthew Witherwax able...@gmail.comjavascript: wrote: Next time you are in Houston, coffee is on me! On Thursday, March 6, 2014 9:28:06 AM UTC-6, Gerald wrote: That is my secret. I don't need coffee! The inside story is that I am always here. I have no life! Gerald On Thu, Mar 6, 2014 at 9:25 AM, Eric Palmer er...@ericfpalmer.comwrote: Yes I get that. On Thu, Mar 6, 2014 at 10:14 AM, Gerald Coley ger...@beagleboard.orgwrote: I am not sure how to take that!Not sure if it is luck or something else. Gerald On Thu, Mar 6, 2014 at 9:12 AM, Eric Palmer er...@ericfpalmer.comwrote: Awesome Gerald we are lucky to have you on this mail list and be participating so much. Thanks On Thu, Mar 6, 2014 at 10:09 AM, Gerald Coley ger...@beagleboard.org wrote: Yes you can do that Use the 3.3V to enable the regulators. Gerald On Thu, Mar 6, 2014 at 9:03 AM, Matthew Witherwax able...@gmail.com wrote: Thanks Gerald. That is exactly the response I was expecting and exactly the feeling I had. Never really like playing Russian roulette myself. Do you see any issue with powering the sensors via a voltage regulator like http://www.pololu.com/product/2098 that can be turned on via a pin on the BBB once it is up and running? On Thu, Mar 6, 2014 at 8:58 AM, Gerald Coley ger...@beagleboard.org wrote: I put that in there for a reason. It may not happen all the time, but eventually you could blow up the processor. Gerald On Thu, Mar 6, 2014 at 8:56 AM, Matthew Witherwax able...@gmail.com wrote: As part of the Control of Mobile Robotics class offered through Cousera, the students are building robots based around the BeagleBone Black. The robot has 5 infrared distance sensors and 2 reflectance sensors used for odometry. These sensors are connected via voltage dividers to pins 33, 35, 36, 37, 38, 39, and 49 of P9, and are powered from the same power supply used to power the BeagleBone Black. The System Manual has a rather explicit warning: NOTE: DO NOT APPLY VOLTAGE TO ANY I/O PIN WHEN POWER IS NOT SUPPLIED TO THE BOARD. IT WILL DAMAGE THE PROCESSOR AND VOID THE WARRANTY. NO PINS ARE TO BE DRIVEN UNTIL AFTER THE SYS_RESET LINE GOES HIGH. My concern is the current arrangement would allow the sensors to begin driving the pins before the SYS_RESET line goes high; however, I am a software guy just starting down the hardware path. Thus far many in the class have been using the robot without issue. Is my concern invalid? Thank you for your time. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to a topic in the Google Groups BeagleBoard group. To unsubscribe from this topic, visit https://groups.google.com/d/ topic/beagleboard/_5Puwswy-RQ/unsubscribe. To unsubscribe from this group and all its topics, send an email to beagleboard...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- Eric Palmer -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups
[beagleboard] BBB doesn't complete boot, little help :-)
Hey folks, first time poster here, having some trouble getting my BBB to boot. Here's the story - I was previously booting fine and connecting to the bone with both serial and ssh over the network. Then I installed OctoPrint, a 3d printing controller. All was well, then installed mjpg-streamer and tested - also working fine. Basically I then powered everything off and went home. Now it won't boot - it will blink a little and then the lights go out. It won't power on at all until I unplug power and try again, when it does the same. In the mean time I did image LinuxCNC MachineKit onto an SD card, and it will boot from that - so I can get into the board, but the onboard boot seems hosed. I'm used to working with Arduino, where you just yank th eplug when you're done - this seems more sensitive and I guess my lack of orderly shutdown (I actually don't even know how to do that yet :-) ) something went wrong. Any suggestions for how to repair the boot? I guess I could reimage it but then I don't exactly know how to do that on the eMMC either. Is it generally considered a good idea to move away from Angstrom? -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[beagleboard] Re: BBB doesn't complete boot, little help :-)
OK , hmmm. So after an hour of poking around, it starts working again. I did switch to plugged directly into the laptop USB versus through the powered USB hub. I'm sure I'll be posting with other non issues again soon :-) Great group! On Tuesday, March 4, 2014 9:12:26 PM UTC-5, brad@gmail.com wrote: Hey folks, first time poster here, having some trouble getting my BBB to boot. Here's the story - I was previously booting fine and connecting to the bone with both serial and ssh over the network. Then I installed OctoPrint, a 3d printing controller. All was well, then installed mjpg-streamer and tested - also working fine. Basically I then powered everything off and went home. Now it won't boot - it will blink a little and then the lights go out. It won't power on at all until I unplug power and try again, when it does the same. In the mean time I did image LinuxCNC MachineKit onto an SD card, and it will boot from that - so I can get into the board, but the onboard boot seems hosed. I'm used to working with Arduino, where you just yank th eplug when you're done - this seems more sensitive and I guess my lack of orderly shutdown (I actually don't even know how to do that yet :-) ) something went wrong. Any suggestions for how to repair the boot? I guess I could reimage it but then I don't exactly know how to do that on the eMMC either. Is it generally considered a good idea to move away from Angstrom? -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups BeagleBoard group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
