Power HD Continuous Rotation Servo AR-3606HB

via Pololu
$29.11
SKU PL-2149

We can get 73 units in Australia from Pololu. If you order today, we can dispatch this stock between Jul 12, 2020 - Jul 19, 2020.

Overview

The AR-3606HB is a standard-sized servo that has been built by Power HD specifically for continuous rotation. At 6 V, it has a maximum rotation speed of 71 RPM (no-load) and can produce up to 93 oz-in (6.7 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 AR-3606HB 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, which also sometimes goes by the Power HD part number AR3606HB, is compatible with our servo controllers and has a Futaba-compatible output shaft, which means it works with our servo wheels and sprockets. 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 standard servo 6001HB, which has almost the same size, weight, speed, and torque as the AR-3606HB.

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

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) 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  $12.95
PowerHD AR-3606HB 71 93 62 83 40  40.5 × 20.0 × 38.0  $14.95
FEETECH FS5106R 95 83 78 70 39  40.8 × 20.1 × 38.0  $13.95
Parallax Feedback 360° 140 35 41  40.0 × 20.0 × 37.2  yes yes $27.99
Parallax (Futaba S148) 50 38 40 30 43  40.5 × 20.0 × 36.1  $13.95
FEETECH FT90R 170 21 135 18 9  22.9 × 12.1 × 26.5  yes $7.95
FEETECH FS90R 130 21 100 18 9  23.2 × 12.5 × 22.0  $4.95