Typically, in robotics, servos are also modified and used as the motive force in wheeled vehicles. To modify servos for 360 degree (continuous) rotation, the potentiometer is decoupled from the output shaft (the electrical connections are left intact) and the two internal physical end-stops (or mechanism) are removed (previously used to prevent damage to the potentiometer.) Now when an input is given to the servo, the potentiometer is no longer providing feedback. So the error signal can never be reduced. So the DC motor continuously turns. In this arrangement, (known as an open-loop scheme) the input now controls the speed of the motor. The larger the input, the faster the motor turns. New: HSR-1422CR, Ball Bearing Upgrade Kit (futaba), HS-50, HS-5245MG, HS-815, Futaba S148 (continuous rotation.) |
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