On Sat, Jul 19, 2014 at 5:16 PM, <rwfish...@gmail.com> wrote: > Hi all. I'm working on a new project. The idea is an off-grid surveillance > camera powered by the Beaglebone Black. I have a couple of challenged that > I'm wondering if anyone has overcome. > > - I'm planning to transmit the photos via a cellular modem. I'm looking for > a good one currently, but I know several USB versions are available.
Every usb device is guaranteed 100mA, so look for spi/usart modems. (they do exist) > - I will power the device with a solar panel, sealed lead acid battery, and > a buck converter. A small bank of super caps becomes helpful when there is random cloud cover. > - I am planning to use an HD webcam to capture the photos. > > Now these are the challenges that I'm working on: > - I have no experience with set-it-and-forget-it electronics. What pitfalls > should I watch out for that could cause the system to hang or malfunction? > > - The Beaglebone Black draws about 150mA when idle. Although I can overcome > this with larger batteries and solar panels, I would like to minimize these > expenses. I've read several posts where people are trying to disable > certain features on the Beaglebone to conserve energy, but I have yet to see > any successful examples. Is anyone aware of ways to reduce power > consumption? > > - I would like to shutdown the Beaglebone when the battery voltage gets > below a certain point and turn it back on when above a certain point. Are > there any pre-made capes that will enable this? 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/d/optout.
