#include <Servo.h>

#define POT_REG_MAX 270.0


Servo servak;

void setup() {
  // put your setup code here, to run once:
 servak.attach(3);
}

void loop() {
  // put your main code here, to run repeatedly:
int value = analogRead(A7);

int angle = int(value / 1024.0 * POT_REG_MAX );
 for(int i = 0; i <= angle; i++){
angle = constrain(angle, 0 , 180);

servak.write(i);
}
}