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
