Subject:
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Re: r/c servos
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 20 Aug 1999 16:01:02 GMT
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Viewed:
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657 times
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John Barnes <barnes@sensors.com> wrote:
> Since RC servos use pulse width as the input, there is already potential
> here. Does any one, with a deeper knowledge of the insides of the RCX code
> know if the squarewave duty cycle is being controlled by software or a
> hardware based PWM?
It is a software-based PWM.
The topic of controlling a servo with the RCX has been discussed before.
Generating the pulse stream for a servo would not be too difficult with the
RCX, assuming you program the H8 directly using e.g. LegOS or Librcx.
-Kekoa
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Message is in Reply To:
 | | r/c servos
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| In response to the question about RC servos, I noted, while probing the signals on the I/O ports with a scope, that the motor power settings result in varying duty cycle square waves from 1:7 through 7:1 and finally full on as the parameter value (...) (25 years ago, 20-Aug-99, to lugnet.robotics)
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