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Copyright © Parallax Inc. High Speed Continuous Rotation Servo (#900-00025) v1.0 7/2/2013 Page 1 of 4
High Speed Continuous Rotation Servo (#900-00025)
Parallax’s High Speed Continuous Rotation Servo offers easily controlled bi-directional rotation via simple
pulse width modulation. With about 3 times the RPM of the original Parallax Continuous Rotation Servo,
it makes an excellent drive motor for small, zippy robots.
Features

Bi-directional continuous rotation
 Up to 150 RPM @ 6 VDC, or 180 RPM @ 7.4 VDC
 Linear response to PWM for easy ramping
 Accepts four mounting screws
 3-pin ground-power-signal cable and female header with 0.1” spacing
for quick connection
 Easy to interface with any Parallax microcontroller or other PWM-
capable device
 Very easy to control; examples available for many programming
languages
Key Specifications

Power requirements: 6.0 to 8.0 VDC; Maximum current draw 130 +/- 50
mA @ 7.4 VDC when operating in no load conditions, 15 mA @ 7.4 VDC when in static state
 Communication: pulse-width modulation
 Speed: 0.30 +/- 0.06 sec/360°
 Torque: 22 +/-11 oz-in (1.6 +/- 0.8 kg-cm) @ 7.4 V
 Weight: 1.5 oz (42 g)
 Dimensions: approx. 2.2 x 0.8 x 1.6 in (56 x 19 x 41 mm) excluding servo horn
 Operating temperature range: 14 to 113 °F (-10 to +45 °C)
Quick-Start Circuit
Connect the servo to your microcontroller as shown in the diagram.
V
µ = microcontroller voltage supply
Vservo = 6 to 7.5 VDC, regulated or battery
I/O = PWM TTL or CMOS output signal,
3.3 to 5 V; < Vservo + 0.2 V
Microcontroller
GND
Vservo
White
Vss
I/O
Red
Black
Vdd
Vµ
High-Speed Servo