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

Parallax (Futaba S148) continuous rotation servo.

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.

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.

People often buy this product together with:

The HD-1440A analog servo from Power HD is one of the smallest servos we carry and is a great, inexpensive, tiny actuator for a small robot mechanism. Servo horns and associated hardware are included.Key specs at 6 V: 0.10 sec/60°, 11 oz-in (0.8 kg-cm), 4.4 g.

An example of hardware included with the Power HD sub-micro servo HD-1440A and the sub-micro servo 3.7g (generic). Actual hardware might vary.

This is a great general-purpose actuator for tiny mechanisms. The lead is terminated with a standard “JR”-style connector, which is Futaba-compatible. Mounting screws and an assortment of servo horns is included with this servo (hardware might vary). You can find more information about this servo under the specifications tab and in its datasheet (379k pdf).

Note that, as with most hobby servos, stalling or back-driving this servo can strip its gears.

Note: The case of this servo has changed from translucent blue to solid black (pictures of the two versions are available under the pictures tab).

People often buy this product together with: