We design our lasergame to use 15-25 mA in the game, and this now we
are allowed to use a rechargeble 4 AA bateries duration 9-10 hours.

--- In laser_design@yahoogroups.com, "design5596" <design5596@...>
wrote:
>
> I'm currently planning to set my system up as a set of parallel
> processors
> communicating over a bus. I think this is the best compromise for
> the "ability to
> tag and score a hit at the same time" problem, and additionally
>should allow us to
> better manage the system.
>
> For example, the processor that records a tag could be a lower >
> voltage unit with
> less capabilities, as it only needs to be active to confirm the
>frequency of a tag,
> and then forward hit information. Setting up an interrupt based
on the detectors for
> this processor might end up saving a lot of power, allowing us to
power down the
> processor when not in use, saving on the batteries (which are
undoubtedly going to
> be a problem).
>
> Speaking of batteries, does anyone have any experience on building
a charging
> circuit, so that we can charge a battery pack while it is still in
a vest?
>