The Feetech FS90R micro servo motor is a continuous rotation servo motor.
Continuous rotation servo motors do not provide feedback, so angle control is not possible; only direction and speed control can be achieved.
It operates at 130 RPM speed and provides 1.5 kg/cm of torque at 6V.
The FS90R converts the signals of standard servo positions into continuous rotation speed.
This motor has a predefined neutral position set at 1.5 ms, which can be adjusted up or down using the potentiometer on the motor.
When a signal with a pulse width greater than the neutral position duration is sent to the motor, it will rotate counterclockwise, and when a signal with a pulse width shorter than the neutral position duration is sent, it will rotate clockwise.
Increasing the signal width will also increase the rotation speed.
The gear case is made of plastic, and servo horns and other components are included with the motor.