Servo''s (Slightly off topic)
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As long as the pulses are supplied and the servo has moved to where its
supposed to be, it will "hold" the position -- ie the motor will try to
prevent the servo from being turned by an outside force. If you stop sending
pulses, the servo will still stay where its at, but an outside force can
easily rotate the servo, just like if the power is off.
Original Message
> I understand, or at least think I do, how a Servo operates. If I
> provide a control signal with a positive pulse of 1.5uS the Servo will
> center its self. If I provide a 1uS pulse it will drive to
> approximately -90 degrees and if I apply a 2uS pulse it will go to
> +90.
>
> Now, what if I apply a 1uSec pulse train for some period of time
> (greater than the time required to get into the proper position) and
> then remove the pulses? Will the Servo hold its last position, this
> is what I would expect, or will it drive to some other position since
> it is no longer receiving the control signal? Assuming that I keep
> power applied to the device. [noparse];)[/noparse] What will a Servo do when power is
> first applied and the control signal is DC to ground?
supposed to be, it will "hold" the position -- ie the motor will try to
prevent the servo from being turned by an outside force. If you stop sending
pulses, the servo will still stay where its at, but an outside force can
easily rotate the servo, just like if the power is off.
Original Message
> I understand, or at least think I do, how a Servo operates. If I
> provide a control signal with a positive pulse of 1.5uS the Servo will
> center its self. If I provide a 1uS pulse it will drive to
> approximately -90 degrees and if I apply a 2uS pulse it will go to
> +90.
>
> Now, what if I apply a 1uSec pulse train for some period of time
> (greater than the time required to get into the proper position) and
> then remove the pulses? Will the Servo hold its last position, this
> is what I would expect, or will it drive to some other position since
> it is no longer receiving the control signal? Assuming that I keep
> power applied to the device. [noparse];)[/noparse] What will a Servo do when power is
> first applied and the control signal is DC to ground?