FEETECH Continuous Rotation Servo FS5106R

Pololu item #: 3430
Brand: FEETECH
RoHS 3 compliant

Price break Unit price (US$)
1 15.95
5 14.99

The FS5106R is a standard-sized servo that has been built by FEETECH specifically for continuous rotation, making it an easy way to get your robot moving. It features two ball bearings on the output shaft for reduced friction, and it offers easy access to the rest-point adjustment potentiometer. This servo can work with both 5 V and 3.3 V servo signals.

Key specs at 6 V: 95 RPM (no-load), 83 oz-in (6 kg-cm), 43 g, CCW rotation for pulse widths above the rest point.

 Description Specs (9) Pictures (7) Resources (1) FAQs (1) On the blog (1) 

Overview

The FS5106R is a standard-sized servo that has been built by FEETECH (formerly known as Fitec) specifically for continuous rotation. At 6 V, it has a maximum rotation speed of 95 RPM (no-load) and can produce up to 83 oz-in (6 kg-cm) of torque. It features two ball bearings on the output shaft for reduced friction, and it offers easy access to the rest-point adjustment potentiometer. The servo can be controlled using a direct connection to a single microcontroller I/O line without any additional electronics, which makes it a great actuator for beginner robotics projects.

The FS5106R continuous rotation servo converts standard RC servo position pulses into continuous rotation speed. The default rest point is 1.5 ms, but this can be adjusted by using a small screwdriver to turn the middle-point positioner. Pulse widths above the rest point result in counterclockwise rotation, with speed increasing as the pulse width increases; pulse widths below the rest point result in clockwise rotation, with speed increasing as the pulse width decreases.

The servo has a 12″ (300 mm) lead that is terminated with a JR-style connector and includes additional servo horns and mounting hardware. The following picture shows an example of the hardware that might be included (actual hardware could vary):

This robotics servo is compatible with our servo controllers and has a Futaba-compatible output shaft, which means it works with our servo wheels for standard servos (25T, 5.8 mm spline). It is also compatible with our Mounting Bracket for Standard-Size Servos:

You can find more information about this servo in its datasheet (463k pdf) (please note that the free-run speed specifications appear to be incorrect in this datasheet; in our tests, the maximum no-load speeds were 95 RPM at 6 V and 78 RPM at 4.8 V, and these are the numbers we have published on our product page).

Note that, as with most hobby servos, stalling or back-driving this servo can damage it.

FS5106R vs FS5106B

Two versions of this servo are available. This product is the FS5106R, which offers open-loop speed control over an unlimited range. Alternatively, the FS5106B offers closed-loop position control over a limited range (approximately 180°). The FS5106R and FS5106B have identical dimensions and use the same motor and gear reduction.

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 $14.95
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 75 67 43  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:

FEETECH FS90R Micro Continuous Rotation Servo FEETECH FS90R Micro Continuous Rotation Servo
Parallax Feedback 360° High-Speed Servo Parallax Feedback 360° High-Speed Servo
Mounting Bracket for Standard-Size Servos Mounting Bracket for Standard-Size Servos

Related Products

Pololu Wheel for Standard Servo Splines (25T, 5.8mm) - 70×8mm, Black, 2-Pack
Pololu Wheel for Standard Servo Splines (25T, 5.8mm) - 90×10mm, Black, 2-Pack
Mounting Bracket for Standard-Size Servos

Related Categories

Continuous Rotation Servos
FEETECH Servos
Pololu Wheels for Servos
RC Servo Controllers
Servo Cables
6.0 V NiMH Battery Packs
Voltage Regulators
Motors and Gearboxes
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