Re: [CAD_CAM_EDM_DRO] controlling a servo or stepper by Remote Contorl?

The only thing I can think of when you say battle bots is the Robot Wars we
have here. Many of the robots use motors from old electric wheelchair
because they have a lot of torque and can be powered easily in the weight
limits they have. They have two of the motors on almost all of the robots
and when they want to turn they just turn one off and turn the other on, or
put one into reverse. I've watched them incinerate themselves in seconds
with too much power flowing and bad wiring so take care. This will make
atleast some of you laugh, Cambridge gave the robotics students £21,000 to
build a robot for the show. It had either high grade aircraft aluminium or
titanium, for it's shell. It NEVER won the end tournament. To me that's a
shame, because I would have quite liked some free education, not to watch
some dweeb bang £21k of crap into a wall of angle grinders for half an hour
each night.

John H.

> Hi Jeff,
>
> I think the battle bot's are all just R/C models. Bigger motors, with
> bigger drivers. R/C is something like PWM, a .5 to 1.5 ms pulse width
> drives the R/C actuators. Multiple "frames" of PWM in an R/C signal.
> Not easy to get step/dir out out of PWM. The PWM width could be
> measured, and converted to a variable pulse. search
>
> HTTP://www.seattlerobotics.org/
>
> for PWM and R/C motor control.
>
> Alan KM6VV
>
>
> cadman@... wrote:
> >
> > Hi all,
> >
> > This may not be the place to ask this question. I have searched for
> > other groups but they are so small in group size and talent compaired
> > to this one.
> >
> > My friend and I are interested in building a battle bot. Since I am
> > also building a servo controlled CNC I thought that maybe servos or
> > steppers are used to power the bots. Does anyone here know how the
> > battle bots are powered? How do you convert a model RC radio to be
> > used for this large scale bot? can Gecko G320/G340 be used to power
> > a servo motor for a battle bot?
> >
> > I guess I just need some way to deliver steps and direction signals
> > from a radio control unit to the Gecko's to power a servo or stepper
> > for forward and reverse movement.
> >
> > Any help would be great!!
> >
> > Thanks
> >
> > CADMAN
> >
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