The AR-3606HB is a standard-sized servo that has been built by Power HD specifically for continuous rotation. At 6V, it has a maximum rotation speed of 71 RPM (no-load) and can produce up to 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 1.5ms, but this can be adjusted by using a small slotted 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 300mm lead that is terminated with a JR-style connector and includes additional servo horns and mounting hardware. The picture above 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.