The link to the servo I am using:
Code:
#include <Servo.h>
Servo myservo; // create servo object to control a servo
// twelve servo objects can be created on most boards
void setup() {
myservo.attach(3); // attaches the servo on pin 9 to the servo object
myservo.write(0);
delay(2000);
}
void loop() {
myservo.write(90); // tell servo to go to position in variable 'pos'
delay(1000); // waits 15ms for the servo to reach the position
myservo.write(0); // tell servo to go to position in variable 'pos'
delay(1000); // waits 15ms for the servo to reach the position
}
The schematic is the basic one that is used to run the example in the servo library. When that didn't work, I switched the power line from the 5V to the Vin pin after connecting an external power supply to the Arduino power port.
Schematic
Image as in https://www.arduino.cc/en/Tutorial/Sweep
sorry, I tried attaching the image but it didn't work for some reason.