The 3212 is a standard servo that has been built specifically for continuous rotation (up to 60 RPM at 4.8 V), and it produces a lot of torque (12 kg-cm at 4.8 V). It features two ball bearings on the output shaft for reduced friction, and it offers easy access to the rest-point adjustment potentiometer. Essentially, it is a gear motor whose velocity can be controlled by an RC servo controller. It is not normally used as an actuator, as there is no way of commanding it to move to a particular position, as a standard RC servo does.

The 3212 continuous rotation servo converts 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 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.

RC servos are hobbyist remote control servos typically used in radio-controlled models, where they provide actuation for various mechanical systems such as the steering of a car, the flaps on a plane, or the rudder of a boat. These servos are not industrial grade and are not recommended for continuous heavy use.

Features

• Connects directly to a Phidgets servo controller
• Continuous rotation servo- control speed instead of position
• 12 kg-cm torque rating
• Comes with a variety of heads for diverse mounting options

Guides

Servo Motor and Controller Guide

Learn about servo motors and servo motor controllers in this guide, including: how servo motors work, how to choose a servo motor, types of servo motors, and more.