#include <Servo.h>
#define LDR_PIN 2
Servo servo1;
int servoPin = 6;

void setup(){
  servo1.attach(servoPin);
}
int l = analogRead(A2);
void loop(){
 for(int i= 0; i<=l; i++)
 {
   servo1.write(i);
   delay(20);
 }
 for(int i = 180;i>=l;i--)
 {
   servo1.write(i);
   delay(20);
    Serial.print(l);
 }

}