It may also be noteworthy that I have several sites running "in production", so some of our decisions were influenced by that. We have 5 sheeva plugs on hand, and are installing and removing sites semi-regularly, so spending the time once to make a gentoo build and duplicate that several times was a timesaver for us. The SD card decision was also based around that, and has served us well in that respect.
I also use one personally for serving up weather data and doing some basic home network serving, and it has been good too. The only issue there seems to be hardware compatibility with a cheap USB 2.0 hub that has to be plugged in AFTER the plug powers up or it won't initialize correctly. --Jim On Wed, May 12, 2010 at 11:30 AM, Jim Kusznir <jkusz...@gmail.com> wrote: > The Sheeva Plugs have been rock solid for us. We currently have two > sites in production with the sheeva, and have had no failures with the > sheeva itself. I just had to go out to a site yesterday to replace a > failed SD card, though...but out of the 6 or 7 deployments we've done, > we've only had one card failure. > > We run gentoo on our sheeva's, mostly to make it easier to build our > packages (since gentoo is a build-from-source distro, it made sense to > me, and it did simplify a lot of our dependancy problems). We don't > use the onboard flash for anything but storage of the kernel; the rest > lives on 8GB SD cards (which is plenty). I managed to get our OS > image down to about 900MB with Gentoo (I do some fancy stuff with the > portage tree). > > I also like having the image on the SD card, as I'm not wearing the > internal nand flash, and I can quickly and easily reconfigure a sheeva > simply by swapping the SD. I can also do a lot of setup on my desktop > more easily than if I used the internal flash. > > In case it wasn't otherwise obvious, the sheeva does run arm, not x86. > > --Jim > > On Wed, May 12, 2010 at 4:56 AM, Rob Conway <rjcon...@bigpond.com> wrote: >> Jim, >> >> I really like the idea of those sheeva plugs. Have they been reliable ? Do >> you run Ubuntu ? >> >> rob >> >> -----Original Message----- >> From: Jim Kusznir [mailto:jkusz...@gmail.com] >> Sent: Tuesday, May 11, 2010 8:13 AM >> To: OWFS (One-wire file system) discussion and help >> Subject: Re: [Owfs-developers] Battery Backup of 1wire network. >> >> >> For our applications, having the bus powered without the PC wasn't useful, >> so we just took the approach of running a power-efficient system (Sheeva >> Plug) and use the usb adapter to power the bus. Placing that on a UPS (very >> easy solution) handles it for a while; alternatively, the sheeva runs on >> +5VDC at a couple amps, so a 12V->5V switching regulator and a deep cycle >> battery would be easy and very long-running (and allows your computer-based >> applications to continue to function with the onewire bus). To date, we've >> just used the UPS solution; with the sheeva plug, a small UPS (350VA, ~$50) >> will run the network and computer for at least an hour or two. Replacing >> the 7AH battery with an external deep cycle battery would offer >> significantly longer runtimes without much hassle. >> >> --Jim >> >> On Wed, May 5, 2010 at 1:24 AM, Rob Conway <rjcon...@bigpond.com> wrote: >>> Hi List, >>> >>> I was wondering if anyone has provided a battery backup for the 1wire >>> power. As I expand and use more of the BAE910 intelligent slaves it >>> becomes a good option to keep these devices powered during power >>> outages. >>> >>> I have two USB adapters one has a hub installed and the other has >>> sensors directly connected. >>> >>> HUB I know the hub has an onboard power connection and voltage >>> regulator inside so I suppose this should be easy, however really >>> wanted to somehow just use a battery pack and some diodes. Direct >>> connect to USB ...This maybe a little more interesting as I currently >>> use the USB power for the network >>> >>> I was probably hoping to keep it real simply and use a couple of high >>> quality AA batteries in a battery pack to provide say 4.5VDC. I know >>> my problem will be the ADC within he BAE910 as I assume it references >>> the supply. >>> >>> Has anybody got a simple battery backup on their network to keep the >>> sensors alive ? >>> >>> rob >>> >>> >>> ---------------------------------------------------------------------- >>> -------- >>> >>> _______________________________________________ >>> Owfs-developers mailing list Owfs-developers@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/owfs-developers >>> >>> >> >> ---------------------------------------------------------------------------- >> -- >> >> _______________________________________________ >> Owfs-developers mailing list >> Owfs-developers@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/owfs-developers >> No virus found in this incoming message. >> Checked by AVG - www.avg.com >> Version: 9.0.819 / Virus Database: 271.1.1/2862 - Release Date: 05/09/10 >> 04:26:00 >> >> >> ------------------------------------------------------------------------------ >> >> _______________________________________________ >> Owfs-developers mailing list >> Owfs-developers@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/owfs-developers >> > ------------------------------------------------------------------------------ _______________________________________________ Owfs-developers mailing list Owfs-developers@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/owfs-developers
