Yes, that's correct John. Probably the easiest to understand description is
here:

http://www.mh.ttu.ee/risto/rc/electronics/radio/signal.htm

Tamas


On 5/6/07, Ariel Rocholl <arocholl@gmail.com> wrote:
>
> Minor correction: PPM for RC is pulse "position" (as opposed to width in
> PWM) modulation.
>
> 2007/5/6, John Ferrell <johnferrell@earthlink.net>:
> >
> > The radio output of an RC receiver is a pulse. The width of that pulse
> > determines the servo position. The accuracy and repeatability as well as
> > the
> > output power are reflected in the price of the servo. You can either
> work
> > from that pulse OR use a high quality servo of your choice to turn a
> knob.
> > Most of that kind of setups balance a bridge.
> > The chips in the servos have all been unobtainable by me!
> > Good luck...
> >
> > John Ferrell    W8CCW
> > "Life is easier if you learn to plow
> >       around the stumps"
> > http://DixieNC.US
> >
> > ----- Original Message -----
> > From: "Bob J." <rocketbob@gmail.com>
> > To: "Microcontroller discussion list - Public." <piclist@mit.edu>
> > Sent: Friday, May 04, 2007 9:17 PM
> > Subject: [PIC] r/c receiver interfacing
> >
> >
> > >I am looking to build what is essentially an a huge radio-controlled
> > servo
> > > with a stepper motor.  In order to drive the stepper motor, I have to
> > > convert the r/c receiver's pulses into step/direction pulses.  To my
> > great
> > > surprise I googled for something off-the-shelf to do this, but have
> come
> > > up
> > > empty-handed.  Has anyone done this sort of thing?
> > >
> > > Regards,
> > > Bob
> > > --
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> > >
> >
> >
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>
>
>
> --
> Ariel Rocholl
> Madrid, Spain
> --
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