#include <Servo.h>

Servo myServo;  // Create servo object

void setup() {
  myServo.attach(7);      // Attach servo to digital pin 7
  myServo.write(180);     // Immediately set to 150 degrees
  Serial.begin(9600);
  Serial.println("Servo set to 150°");
}

void loop() {
for(int i=160;i>=40;i--){
  myServo.write(i);
  delay(10);
}

delay(15000);

for(int i=40;i<=160;i++){
  myServo.write(i);
  delay(10);
}

delay(15000);

}