Please help choose the servo for my tasks. I need a rc/robotic servo to rotate 360 degrees. Moment to greater than 10 kg / cm.
I want to use it as a stepper motor for positioning with accuracy of 1 - 5 degrees. If the accuracy is better then it is excellent.
The problem is that I have learned that not all 360 rc/robotic servo can be fitted exactly in position, but only the speed and direction of rotation.
Can you tell me the name of servos for my tasks?
ardu2ardu:
I want to use it as a stepper motor for positioning with accuracy of 1 - 5 degrees. If the accuracy is better then it is excellent.Can you tell me the name of servos for my tasks?
Why don't you just use a stepper?
More 10kg/cm torque need.Stepper for this torque have big size,weight and need
more than 298N driver .
Hobby king has some big inexpensive servos like the below six turn sail winch servo.
Torque is force x distance, not force / distance.
zoomkat, for this servo i can use command like:
myservo.write(10); // set 10 angle
myservo.write(90); // set 90 angle
myservo.write(350); // set 350 angle
? 
As the sail winch servos ate made to work with standard RC equipment, they would probably still use the same command range of 0-180 deg or 500-2500us.
MarkT:
Torque is force x distance, not force / distance.
And it grinds my gears (as they say on 9gag) that servo makers actually quote torque in kg (which in the first place is mass not force) and don't even bother with the distance part... so as I understand it, a torque spec of "6.9kg" actually means "6.9 kg cm"