Project will need only 2 standard servos, modified for continuous use,
(for the drive train)
e.g. HiTec HS 322 or 422,
operating voltage 4.8 - 6.0 V,
current drain 7.7 mA/idle and 180 mA no load operation;
Batteries constrained to 4 "common, commercially available" cells
==> Alkaline D cells x 4 = 6V
Thanks!
--- In oopic@yahoogroups.com, Andrew Porrett <slicerwizard@...> wrote:
>
> You haven't stated how many or what size servos you'll be using.
You
> also haven't specified what size or chemistry batteries you're
> using. Without that information, I can't advise you.
>
> At 12:27 PM 11/4/2007, pvbeachdiver wrote:
> >For a competition, batteries are constrained to 4 x 1.5V batteries
(or
> >a 4.8 single battery pack).
> >
> >The plan was to use ooPIC oServerSP Object to control direction and
> >speed of an RC servo-motor.
> >
> >However, notes at www.oopic.com/oservosp.htm advise:
> >
> >"be sure not to power the servo from the same power supply as the
> >ooPIC. A servo will pull large amounts of power in quick surges
> >causiong the servo's power supply to periodically drop below 4.5
> >volts.. The ooPIC has a brown otu circuti that resets the ooPIC
if its
> >power goes under 4.5 volts. Using separate power suppplies will
> >prevent the ooPIC from resetting when driving a servo".
> >
> >Is there a workaround for this problem, or does the constraint
> >effectively eliminate the use of the ooPIC for this competition?
>
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