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Sumo won''t turn and moves slowly — Parallax Forums

Sumo won''t turn and moves slowly

ArchiverArchiver Posts: 46,084
edited 2004-04-12 19:01 in General Discussion
> --- George Warner <geowar@a...> wrote:
>> I've actually seen this happen when you're sending
>> the PWM to the servo's
>> too often (or not often enough).

> I can't understand what u are saying. What is PWM? Can
> u pls explain in details.

Hobby servo's are typically driven by Pulse Width Modulation (PWM). There is
a minimum and a maximum pulse width. The shorter the pulse width the further
the servo is turned in one direction (to the limit of the servo) and the
longer the pulse width the further the servo is turned in the opposite
direction (to the opposite limit of the servo). There is also a minimum and
maximum amount of time allowed between sending pulses to a servo.

If you send pulses too fast then the servo may not have enough time to
finish processing the previous pulse.
--
Enjoy,
George Warner,
Schizophrenic Optimization Scientists
Apple Developer Technical Support (DTS)
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