Parallax (Futaba S148) Continuous Rotation Servo #900-00008

Pololu item #: 536
Brand: Parallax
Status: Discontinued 

This product has been discontinued.

We recommend the SM-S430R, AR-3606HB, and FS5106R continuous rotation servos as alternatives with superior performance and nearly identical sizes to the Futaba S148.

The Parallax continuous rotation servo is a Futaba S148 servo that has been modified for continuous rotation. Since servos have their own integrated control circuitry, this unit gives you an easy way to get your robot moving.

Key specs at 6 V: 50 RPM (no-load), 38 oz-in (2.7 kg-cm), 43 g

 Description Specs (9) Pictures (3) Resources (1) FAQs (1) On the blog (1) 

Parallax (Futaba S148) continuous rotation servo.

Overview

The Parallax (Futaba S148) continuous rotation servo converts standard RC servo position pulses into continuous rotation speed. It can be controlled directly by a microcontroller without any additional electronics, which makes it a great actuator for robotics projects. The servo includes an adjustable potentiometer that can be used to center the servo and comes with a star-shaped servo horn and an 11″ (270 mm) lead.

Specs

  • Power: 4.8 – 6 V
  • Top 6 V speed: 50 RPM (with no load)
  • Torque: 2.7 kg-cm/38 oz-in at 6 V
  • Weight: 43 g/1.5 oz with servo horn and screw
  • Size (L x W x H): 40.5 mm x 20.0 mm x 36.1 mm / 1.60" x 0.8" x 1.42"
  • Control interface: RC servo pulse width control, 1.50 ms neutral
  • Manual adjustment port

This servo is compatible with our servo controllers and our servo wheels and sprockets. This servo is also compatible with our Mounting Bracket for Standard-Size Servos:

Continuous rotation servo comparison

Continuous rotation servo size comparison. From left to right: SpringRC SM-S4303R, Power HD AR-3606HB, FEETECH FS5106R, Parallax Feedback 360°, Parallax (Futaba S148), and FEETECH FS90R.

6 V 4.8 V Weight (g) Size (mm) Direction
vs pulse
(1ms → 2ms)
Digital? Feed­back? Price
Max speed
(RPM)
Stall torque
(oz·in)
Max speed
(RPM)
Stall torque
(oz·in)
SpringRC SM-S4303R 54 71 43 46 41  41.3 × 20.7 × 40.2  CW→CCW $15.95
SURPLUS SpringRC SM-S4303R 2-Pack 54 71 43 46 41  41.3 × 20.7 × 40.2  CCW→CW $19.95 for a pair of servos
FEETECH FS5106R 95 83 78 70 39  40.8 × 20.1 × 38.0  CW→CCW $15.95
Parallax Feedback 360° 140 35 41  40.0 × 20.0 × 37.2  CW→CCW yes yes $27.99
FEETECH FT90R 135 21 108 18 9  22.9 × 12.1 × 26.5  CW→CCW yes $8.95
FEETECH FS90R 130 21 100 18 9  22.5 × 12.1 × 23.4  CW→CCW $5.95

People often buy this product together with:

0.100" (2.54 mm) Breakaway Male Header: 1×40-Pin, Straight, Double-Sided 0.100" (2.54 mm) Breakaway Male Header: 1×40-Pin, Straight, Double-Sided
4-AA Battery Holder 4-AA Battery Holder
Micro Maestro 6-Channel USB Servo Controller (Assembled) Micro Maestro 6-Channel USB Servo Controller (Assembled)

Related Products

Mounting Bracket for Standard-Size Servos
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FEETECH Continuous Rotation Servo FS5106R
SpringRC SM-S4303R Continuous Rotation Servo
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FEETECH FT90R Digital Micro Continuous Rotation Servo
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Related Categories

Continuous Rotation Servos
RC Servo Controllers
Servo Wheels
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Motors and Gearboxes
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