FEETECH FS90R Micro Continuous Rotation Servo

Artikelnummer: PO2820

Hersteller Artikel Nr.: 2820

The FS90R is a micro servo that has been built by FEETECH (formerly known as Fitec) specifically for continuous rotation, offering an inexpensive and easy way to get your small turret spinning or miniature robot moving, especially when paired with our 60×8mm wheels designed specifically for this servo. Key specs at 6 V: 130 RPM (no-load), 21 oz-in (1.5 kg-cm), 9 g

Kategorie: Motoren

6,43 €

inkl. 19% USt.,

sofort verfügbar

Lieferzeit: 1 bis 2 Tage



Bottom view of FEETECH FS90R micro continuous rotation servo (V1.0) showing middle-point adjustment potentiometer. FS90R V2.0 uses an SMD potentiometer.


The FS90R is a micro-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 around 130 RPM (no-load) and can produce up to 21 oz-in (1.5 kg-cm) of torque. 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 miniature actuator for beginner robotics projects; just throw on a pair of wheels and your robot is ready to roll!

The FS90R 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 adjustment potentiometer. 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 7? (180 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, which is a continuous rotation version of the FEETECH (Fitec) FS90, is compatible with our servo controllers. If you are looking for a similar servo that is capable of limited-range position control as opposed to continuous rotation speed control, consider the Power HD micro servo HD-1900A, which has almost the same weight, speed, and torque as the FS90R.

Note: As of December 3, 2014, we are shipping V2.0 of this servo, which widens the deadband from ±5 ?s to ±45 ?s to make it easier to set a stationary neutral position. Also, the middle-point adjustment potentiometer has been changed to a lighter SMD potentiometer on the new version. The physical dimensions of the servo have not changed.


If you want to use this servo as an actuator for your miniature robot, you will need a wheel to go with it. Fortunately, we carry a 60×8 mm wheel specifically designed for use with this servo:

The wheel size is well matched to the servo?s speed and torque, allowing for a top speed of around 40 cm/s (1.3 ft/s) at 6 V.

Continuous rotation servo comparison

Continuous rotation servo size comparison. From left to right: SpringRC SM-S4303R, Power HD AR-3606HB, Parallax, and FEETECH FS90R.

SpringRC SM-S4303RPowerHD AR-3606HBParallax (Futaba S148)FEETECH FS90R
Max Speed @ 6 V:54 RPM71 RPM50 RPM130 RPM
Stall torque @ 6 V:71 oz-in93 oz-in42 oz-in21 oz-in
Max Speed @ 4.8 V:43 RPM62 RPM39 RPM100 RPM
Stall torque@ 4.8 V:46 oz-in83 oz-in33 oz-in18 oz-in
Weight:41 g40 g43 g9 g
Size (mm):41.3×20.7×40.240.5×20.0×38.040.5×20.0×38.023.2×12.5×22

People often buy this product together with:

Pololu Wheel for FEETECH FS90R Micro Servo, 60×8mm Pair - BlackPololu Wheel for FEETECH FS90R Micro Servo, 60×8mm Pair - Black
Micro Maestro 6-Channel USB Servo Controller (Assembled)Micro Maestro 6-Channel USB Servo Controller (Assembled)
Power HD Continuous Rotation Servo AR-3606HBPower HD Continuous Rotation Servo AR-3606HB

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5 von 5 Jetzt geht es Rund

Dieser Servo war genau das, was ich gesucht habe.
Ein Servo der nicht nur ein paar Grad nach rechts oder links dreht, sondern ganze 360 Grad. Perfekt.
Man kann Ihn natürlich auch als kleinen Motor missbrauchen.
Alles in allem eine Runde Sache :-)

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