For video player ,RPI win
2014-04-13 12:56 GMT+08:00 Maxim Podbereznyy <lisar...@gmail.com>: > Mubin, how many kiosks do you plan to assemble? > 13 Апр 2014 г. 1:55 пользователь "Mübin İçyer" <mubinic...@gmail.com> > написал: > > Thanks for replies. I have read somewhere ( >> http://www.daveakerman.com/?page_id=1294) that the GPU of RPi can be >> deactivated but it saves only 20mA of power, which is not a big deal. Our >> system will consist of some other hardwares as well i.e. solar power >> control, RFID reader, CAN bus connection, 3G or GPRS connection, LCD, >> Keyboard etc. We decided to get a BBB as soon as possible :) >> >> >> >> 2014-04-12 23:31 GMT+02:00 William Hermans <yyrk...@gmail.com>: >> >>> According to what I have read you can not disable the GPU on the rPI, >>> but you can minimize how much RAM it uses ( down to around 16MB it seems ) >>> I would however wager if you're not using the GPU, its power signature >>> would be minimal. >>> >>> rPI A seems to use up to around 300mA( but no onboard networking ), >>> while the rPI B can use up to around 700mA. >>> >>> I can vouch that the BBB can run from a computers USB port, so less than >>> 500mA. Running from USB, I have boot from an external USB drive, with >>> ethernet enabled., while loading the CPU at 99% load ( software test I >>> wrote in C ) Minimal to no GPIO running. Aside from this however, I have >>> not checked to see how much power the BBB draws. But I did run the above >>> test for several hours. I meant to stress the board for the sole purpose of >>> determining stability. It did not crash or glitch once. >>> >>> From all the reading I have done the only real advantage the rPI has >>> over the BBB, is a much stronger GPU. Power usage seems to be reasonably >>> comparable where I'd bet the BBB has the overall advantage ( no hand on >>> proof though ). Also, the rPI has the slight advantage of software maturity >>> . . . But personally I like where the BBB sits software wise right now. >>> >>> I have no love for the rPI personally, but I could see your project >>> working on either. One thing to note however. If you're going to be running >>> solar to charge batteries . . .the BBB has the right peripherals and enough >>> of them to act as a charge controller( with proper isolation and power >>> mosfets of course ) . . . with plenty to spare. Something that is rather >>> trivial to implement in C. >>> >>> >>> On Sat, Apr 12, 2014 at 1:28 PM, Charles Steinkuehler < >>> char...@steinkuehler.net> wrote: >>> >>>> I think the BBB is the better choice as well, but you'll likely want to >>>> measure real-world power consumption. >>>> >>>> Neither board is really designed as a mobile platform, but the Pi is at >>>> heart a set-top box (powered by AC), while the BeagleBone has it's roots >>>> in tablet-like processors and has fine-grained control over powering >>>> up/down different parts of the chip, CPU speed, etc. I'm not sure on >>>> the Pi if you can disable it's probably power-hungry GPU that is >>>> actually in control of the system (the ARM core is actually a secondary >>>> CPU, the black-box GPU runs the show). >>>> >>>> There are also likely some tweaks to be made with the BBB that will >>>> reduce power consumption, specifically putting the HDMI Tx chip in a >>>> power-down state. The on-board eMMC will also probably help with power >>>> consumption, or at least help a bit with reliability (no uSD connector >>>> to cause problems). >>>> >>>> Finally, the BBB is actually engineered to be able to run off battery, >>>> which is very similar to what you want to do, while I don't know if the >>>> Pi has a means to work with multiple power sources. >>>> >>>> Anyway, best of luck, and ask here if you go with the 'Bone and run into >>>> any problems! >>>> >>>> On 4/12/2014 3:05 PM, Philip Polstra wrote: >>>> > BBB is a clear winner. Lower power consumption, more I/O, easier to >>>> do >>>> > CAN, more reliable, more software options. >>>> > On Apr 12, 2014 2:05 PM, "Mübin Icyer" <mubinic...@gmail.com> wrote: >>>> > >>>> >> Hi, >>>> >> >>>> >> We are a gruop of students who want to make a kiosk system with >>>> embedded >>>> >> linux boards. We are now in selection phase but we could not decide >>>> which >>>> >> one fits to our requirements. Could you please help us? >>>> >> >>>> >> Our requirements: >>>> >> >>>> >> - Minimum power consumption, since the kiosk will be powered with >>>> >> solar power and battery. >>>> >> - CAN interface is a must, Rasperry Pi doesn't have such an >>>> interface >>>> >> but it can be easily makeable at cost of power consumption (a >>>> seperate >>>> >> converter for CAN to uart or i2c will be needed.) >>>> >> - No need for graphical outputs such as HDMI, Video out or so. The >>>> >> connection to the board will be over SSH. >>>> >> - The grapics and text will be displayed on an monochrome LCD or >>>> >> e-paper to reduce the power consumption. >>>> >> >>>> >> Thanks for helps. >>>> >> >>>> >> -- >>>> >> 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. >>>> >> >>>> > >>>> >>>> >>>> -- >>>> Charles Steinkuehler >>>> char...@steinkuehler.net >>>> >>>> -- >>>> 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/KCr_Sm8tP_o/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. >> > -- > 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 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.
