水下推进器转动不了

基于Arduino平台,按照要求对推进器进行初始化,只听到哔了一声,程序如下:
#include <Servo.h>

Servo myServo;

void setup() {
// put your setup code here, to run once:

myServo.attach(9);//Servo对象连接在9号脚
myServo.writeMicroseconds(1000);
delay(1000);
myServo.writeMicroseconds(1500);
delay(1000);
}

void loop() {
// put your main code here, to run repeatedly:
myServo.writeMicroseconds(1500);
delay(10);
myServo.writeMicroseconds(1300);
delay(10);
}

delay时间长一点