Subject:
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Re: Servos
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Thu, 2 Apr 1998 10:00:00 GMT
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Original-From:
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Duncan Orthner <orthner@[192.168.0+saynotospam+.1]>
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Reply-To:
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ORTHNER@IDIRECT.CAnomorespam
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Viewed:
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3593 times
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>
> Can you hook up RC servo signal inputs to the motor drivers?
> It looks to be feasable as both require a pulse width modulated
> signal but I'm not sure if the motor driver's carrier frequency and
> range of pulse widths is suitable. Any ideas - it would be good is it
> can be done as it makes walking robots "easy" to construct.
This won't work, as the servo's require a one-shot, not a variable
duty cycle type of pwm (like what comes from the motor drivers on the
HB). ie. the width of any given pulse is not consistent, just the
overall duty cycle. RC servo's require a consistent pulse output
centered around 1500ms, which is the neutral position. Actually, I've
found that with Futaba servos, the neutral pulse width is about
1350ms.
hope this helps, Duncan
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Message is in Reply To:
 | | Servos
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| Can you hook up RC servo signal inputs to the motor drivers? It looks to be feasable as both require a pulse width modulated signal but I'm not sure if the motor driver's carrier frequency and range of pulse widths is suitable. Any ideas - it would (...) (29 years ago, 30-Mar-98, to lugnet.robotics.handyboard)
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