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Step 5Center the servo
Determine the center of the servo. There are a few ways to do this.
The best way is to connect the servo to the controller that you plan to use, power it up and set your control to its center position. Then remove power to the servo, thus leaving it set at the control's center position.
Mount one of the servo horns (plastic parts that come with the servo) to the servo shaft so it will be easy to mark where center is. I like the circle one for this step.
Now make a mark on the horn perpendicular to the short side of the servo. You want the mark to be close to the short side.
The drawback is that the servo is "calibrated" to this controller and may not work with another controller.
The following method will find the true center of the servo's travel. Fortunately most controllers allow you to adjust where they think the center point is, so this method should work for almost all controllers.
Servos only rotate 180 degrees, so if you mount one of the servo horns (plastic parts that come with the servo) to the servo shaft it will be easy to see where center is. I like the circle one for this step.
Rotate the shaft by hand as far to one side as it will go. Mark a line on the horn perpendicular to the long side of the servo.
Now rotate it to the other extreme. It should have travelled 180 degrees.
Rotate the servo shaft back 90 degrees and voila you have the servo centered.
Note where the mark is and carefully remove the servo horn from the servo. You do not want to move the shaft at this point. If you do, simply repeat the above steps to find center again.
The best way is to connect the servo to the controller that you plan to use, power it up and set your control to its center position. Then remove power to the servo, thus leaving it set at the control's center position.
Mount one of the servo horns (plastic parts that come with the servo) to the servo shaft so it will be easy to mark where center is. I like the circle one for this step.
Now make a mark on the horn perpendicular to the short side of the servo. You want the mark to be close to the short side.
The drawback is that the servo is "calibrated" to this controller and may not work with another controller.
The following method will find the true center of the servo's travel. Fortunately most controllers allow you to adjust where they think the center point is, so this method should work for almost all controllers.
Servos only rotate 180 degrees, so if you mount one of the servo horns (plastic parts that come with the servo) to the servo shaft it will be easy to see where center is. I like the circle one for this step.
Rotate the shaft by hand as far to one side as it will go. Mark a line on the horn perpendicular to the long side of the servo.
Now rotate it to the other extreme. It should have travelled 180 degrees.
Rotate the servo shaft back 90 degrees and voila you have the servo centered.
Note where the mark is and carefully remove the servo horn from the servo. You do not want to move the shaft at this point. If you do, simply repeat the above steps to find center again.
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