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Topic: how to control servo's stopping point? (Read 1 time) previous topic - next topic

AWOL

You've been here more than a month - any details of what you want to achieve would be appreciated.
"Pete, it's a fool looks for logic in the chambers of the human heart." Ulysses Everett McGill.
Do not send technical questions via personal messaging - they will be ignored.

PaulS

It's a continuous rotation servo. There is no center point. There is no 0 degree mark, either. All such capabilities have been removed from that servo, to make it a continuous rotation servo. All that you can do with that "servo" is change the speed and direction that it rotates.


zoomkat

If uou need a servo that rotates more than 180 deg and is still a servo, then you might look at the sail winch servos.
Consider the daffodil. And while you're doing that, I'll be over here, looking through your stuff.   8)

retrolefty


It's a continuous rotation servo. There is no center point. There is no 0 degree mark, either. All such capabilities have been removed from that servo, to make it a continuous rotation servo. All that you can do with that "servo" is change the speed and direction that it rotates.


Actually they do a disservice and are misleading even calling it a servo. It's an ex-servo, it no longer represents anything that a servo controlled motor would share with it. It should be called what it has become sense being modified:

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It's a bidirectional variable speed geared motor drive that is controlled by a pwm pulse.


From a SparkFun customer:

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"If this were a servo motor, it would take a set point and adjust its position to be at the corresponding location, using internal feedback. If this is a continuous rotation motor, it takes a set point and scales its speed depending on that set point, but there's no closed loop control, so it's not a "servo". This device may very well be in a package typical of servos and may even have been a servo before someone broke the feedback loop, but it's not a servo if it's continuous rotation, open-loop control."


Lefty

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