my servo motor keep rotarying


i am working on the Lesson4 Obstacle Avoidance Car project now.

i downloaded Servo_Debug and uploaded it into my UNO.
But the servo motor is still keep rotarying.

#include <Servo.h>
Servo myservo;

void setup(){
myservo.write(90);// move servos to center position → 90°
void loop(){


Please help!


If you servo keeps turning (is that what you mean?) with that code then you have a continuous rotation servo and NOT a standard servo. Please post a link to the servo you are using.