Datasheet

Copyright © Parallax Inc. High Speed Continuous Rotation Servo (#900-00025) v1.0 7/2/2013 Page 3 of 4
Rotational Velocity vs. Pulse Width
The graph below shows the relationship between rotational velocity and control pulse width, assuming
two servos are mounted to a robot chassis.
It is important to note that while the velocity response curve is consistent for each servo, the positive
velocity response near 1.4 ms has a much sharper curve than the negative velocity response curve near
1.6 ms.
The net effect is that when two servos are mounted on a robot, pulse widths equidistant from the center
value of 1.52 ms will not result in the same rotational speed, and the robot will veer slightly to one side.
For robotics navigation applications that do not incorporate frequent course adjustment from object
sensors, this can be compensated for in software, or with the use of encoders.
Voltage and Speed
Maximum speed will vary with input voltage; 0.30 +/- 0.06 sec/360° @ 7.4 V is the typical maximum.