Parallax (Futaba) Continuous Rotation Servo

ParallaxSKU: RB-Plx-180
Manufacturer #: 900-00008

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Sale price ¥3,429

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  • Bidirectional continuous rotation
  • 0 to 50 RPM, with linear response to PWM for easy ramping
  • Easy to interface with Parallax microcontroller or PWM-capable device
  • RoHS Compliant

The Parallax (Futaba) Continuous Rotation Servo is ideal for robotics and basic movement projects.  It is designed for continuous rotation and can easily interface with any Parallax microcontroller.

Parallax (Futaba) Continuous Rotation Servo- Click to Enlarge


  • Bidirectional continuous rotation
  • 0 to 50 RPM, with linear response to PWM for easy ramping
  • Accepts four mounting screws
  • Easy to interface with any Parallax microcontroller or PWM-capable device
  • Very easy to control with PBASIC's or SX/B's PULSOUT commands

Note: Servo current draw can spike while under load. Be sure that your application's power supply and voltage regulator is prepared to supply adequate current for all servos used. Do not try to power this servo directly from a BASIC Stamp module's Vdd or Vin pins. Do not connect the servo's Vss line directly to the BASIC Stamp module's Vss pin.

  • Dimensions: 2.2 x 0.8 x 1.6 in (55.8x 19 x 40.6 mm) excluding servo horn
  • Power requirements: 4 to 6 VDC*
  • Communication: Pulse-width modulation
  • Dimensions: 2.2 x 0.8 x 1.6 in (55.8x 19 x 406 mm) excluding servo horn
  • Operating temp range: +14 to +122 °F (-10 to +50 °C)
  • Torque: 38 oz-in (2.74 kg-cm) @ 6 V

Customer Reviews

Based on 8 reviews
Jean P
Excellent product.

Not cheap but one of the better continuous servos for the money.

Jason W.
Nice and powerful

Simply works with plenty of torque to lift a DSLR.


The servo has been working continuously for almost a month and still moves great!

Used on a custom robot to swing an arm up and down. Works great.

Works great.

Does its job well

We made two robot using these continuous servo. The Servos performed as expected.

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