Re: [beagleboard] Asterisk server on BBB
In case anyone else is interested in running an Asterisk server on the BBB I've found that http://www.beaglebone-asterisk.org performs fairly well. Even better than on one of my older x86 systems. After doing some testing I'm ready for an initial deployment. Looks like it should be able to handle at least 6 simultaneous calls, which is more than I'll ever need. I'll post updates if I find anything interesting (good or bad). It's running on a 64G micro-SD card: Ubuntu 14.04 LTS Asterisk 11.8.0 FreePBX 2.11.0.35 Later, Artie On 7/30/2014 1:34 AM, William Hermans wrote: Running debian the BBB can run lxde, but it wont be like a current x86 system experience. But for comparison, the BBB has the rPI trumped in all but graphics. On Tue, Jul 29, 2014 at 9:18 PM, Artie Lekstutis ar...@lekstutis.com mailto:ar...@lekstutis.com wrote: I'm looking for a replacement for my antique Trixbox Asterisk servers using a BBB solution. One is a home system, the other is a small retail operation. Both in reliable operation since 2008. Run part time by a someone with a long term interest in Linux and communications systems (me). The distribution http://www.beaglebone-asterisk.org/ is currently my focus. Is there anything I should know about it (good or bad)? Is there anything better for such use? My occupation is embedded systems, not IT. I'd prefer to have a reasonable GUI to manage the configuration where possible. FreePbx seems to provide that in place of Trixbox. Not that I'm afraid of scripting or re-building kernels, I just have other things to do too. Thanks! Artie Lekstutis -- 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 mailto:beagleboard%2bunsubscr...@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 mailto: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.
[beagleboard] Asterisk server on BBB
I'm looking for a replacement for my antique Trixbox Asterisk servers using a BBB solution. One is a home system, the other is a small retail operation. Both in reliable operation since 2008. Run part time by a someone with a long term interest in Linux and communications systems (me). The distribution http://www.beaglebone-asterisk.org/ is currently my focus. Is there anything I should know about it (good or bad)? Is there anything better for such use? My occupation is embedded systems, not IT. I'd prefer to have a reasonable GUI to manage the configuration where possible. FreePbx seems to provide that in place of Trixbox. Not that I'm afraid of scripting or re-building kernels, I just have other things to do too. Thanks! Artie Lekstutis -- 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] Powering the BBB
On 3/5/2014 9:07 PM, doog wrote: in hopes of explaining what is being talked around is this. You want 5V from 11V so there's 6V difference. Those linear regulators will give you the 5V at some current level(let's say 1A for simplicity). So you get 5V at 1A and that's 5Watts(5V*1A) but that 1A of current is also involved in that 6V drop from 11V to get you 5V. The energy/power wasted in that 6V drop is calculated by the current of your load( 1A ) times the drop( 6V ) which is 6Watts in the example. This is why Gerald is correct in his statement that the linear regulator is wasteful since in the example you only need 5W and have 6W of waste so have a total energy cost of 11W. A better solution would be a DC-DC converter and you can get those on amazon with free shipping from china(if you can wait) for less than $10. The take the input power turn it into a AC signal which can then be chopped and reassembled into a lower voltage with little energy loss. for example: http://www.amazon.com/gp/product/B008BHAOQO Doug The most important detail here is the 6W of waste heat. A linear regulator regulates the Voltage by generating heat. The heat generated in a linear regulator is measured in Watts and can be calculated as the Voltage dropped across the regulator times the current through it. From this discussion I understand that to be 6W (6V * 1A). The regulator will have a specification for the temperature rise from the die to case (or ambient) per Watt. A common LM340 in a TO-220 case, for example, has a 4C/W junction/case and 54C/W junction/ambient rating. In this example that means with no heatsink the junction will be 324C over ambient (54C/W * 6W). The 24V limitation is not the factor here, it's dissipating the heat. You will need a heatsink capable of disipating at least 17.6C/W to ambient just to keep the LM340 TO-220 from reaching its rated 150C limitation with an ambient temperature of 20C (20C + (4 + 17.6C/W) * 6W = 150C). At elevated operating temperatures you will need a better heatsink than that. I don't know what regulator you are using as you have not stated that publicly yet, nor do I know the maximum temperature for your application so I can't guess what size heatsink you will actually need. Short answer: Use a big heat sink or a switcher. Artie -- 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] Feasibility of Industrial BBB?
Arrow sells a 'White Label' version of the BBB that is made by Circuitco. It's meant for commercial use and has no Beagle markings. I have a Power Point presentation from Arrow (U.S.) claiming that they are the exclusive 'provider': http://parts.arrow.com/item/detail/circuitco/am335xbblk-system Not sure of the temperature range. I'm evaluating using that board in a small quantity commercial product. I have no financial interests in Arrow. Artie Lekstutis On 1/24/2014 3:53 PM, O'Toole, Aaron CIV NSWC IHEODTD, D25 wrote: From looking through the forums, it looks like it is safe to say the BBB is not rated to operate below 0 F. However, I really like the BBB and I would like to use it in a project that has strict temperature requirements for -20 F to 140 F (-29 C to 60 C) operational temperatures. I've seen a few people make quick mention of unofficial industrial BBB clones. Can someone provide more information of anything like that...or comment on the feasibility of me going through and finding drop-in replacements for any components that do not meet these specs? Thanks, Aaron -- 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] Toolchain for Qt embedded development on BBB
I'm trying to put together a Qt embedded development environment under Ubuntu 12.04 for the BBB based on http://derekmolloy.ie/beaglebone/qt-with-embedded-linux-on-the-beaglebone/. It references the toolchain http://angstrom-distribution.org/toolchains/angstrom-2011.03-i686-linux-armv7a-linux-gnueabi-toolchain-qte-4.6.3.tar.bz2 which is not currently available. Does anyone know where I can get a copy from? The copy in archive.org is broken, and http://angstrom-distribution.org/toolchains/ has been unavailable for a few weeks now. Or can someone recommend an alternate detailed tutorial for installing a Qt embedded development environment under Ubuntu for the BBB that doesn't need www.angstrom-distribution.org? So far the only c++ cross platform IDE I've gotten to (almost) work for the BBB is Eclipse. Just having issues getting it to remote debug. Thanks! Artie -- 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.
