#include <Servo.h>
Servo servo1;
int servoPosition;

void setup() {

// set PIN and range in us. Standard servo range is 500 - 2500 us
servo1.attach(6, 500, 2500);

}

void loop() {

servoPosition = map(analogRead(A0), 0, 1023, 0, 180);
servo1.write(servoPosition);

}