On Fri, Aug 29, 2008 at 08:51:39AM -0700, Gus Wirth wrote:
This thing is supposed to be a USB device. If so, it can draw power from the PC it's connected to. That will give you 2.5 watts to work with. The battery only needs to power the clock. A cell for a watch should let it run for at at least a year depending on your design.
I didn't realize we were designing a USB device. Does the design allow interaction with the host computer, or is it just to receive power? If it allows interaction, it doesn't even need a clock, since it can receive a challenge. Otherwise, it could just start doing the computation once it is connected. David -- [email protected] http://www.kernel-panic.org/cgi-bin/mailman/listinfo/kplug-list
