#include <Servo.h>
Servo s1;
void setup() {
  // put your setup code here, to run once:
  pinMode(A0, INPUT);
  s1.attach(3);

}

void loop() {
  // put your main code here, to run repeatedly:
  int x=analogRead(A0);
  int y=map(x,0,1023,0,180);
  if(x<512){
    s1.write(y);
  }
else{
s1.write(y);

}
}