Tower Pro SG-5010 Servo problems

Development Boards Arduino
1

Hi guys,

I ordered a servo and I thought it would be fairly easy to use. I’ve tested out the two Arduino libraries, Servo.h and SoftwareServo.h. I followed Adafruit’s tutorial for Servo.h, and my servo only turns in one direction (left), and doesn’t stop even if it reaches the end. Here’s the code I have that tested both libraries. I don’t think I’m wiring it wrong, but maybe someone can help.

Servo.h

#include <Servo.h>

unsigned char servoPin = 9;
Servo servo;

void setup()
{
    servo.attach(servoPin);
}

void loop()
{
    servo.write(90);
    delay(1000);
    servo.write(0);
    delay(1000);
    servo.write(180);
    delay(1000);
}

SoftwareServo.h

#include <SoftwareServo.h>


SoftwareServo servo;


void setup()
{
  servo.attach(9);
}

void loop()
{

    servo.write(0);
    delay(1000);
    SoftwareServo::refresh(); 
    servo.write(90);
    delay(1000);
    SoftwareServo::refresh();
    servo.write(180);
    delay(1000);
    SoftwareServo::refresh();

}