#include <Servo.h>

Servo servo1;
Servo servo2;
Servo servo3;
Servo servo4;

int potpin1 = 0;
int potpin2 = 1;
int potpin3 = 2;
int potpin4 = 3;
int val;

void setup() {

 servo1.attach (3);
 servo2.attach (5);
 servo3.attach (6);
 servo4.attach (9);

}

void loop() {
val = analogRead(potpin);
val = map(val,0,1023,0,179);
servo1.write(val);
servo2.write(val);
servo3.write(val);
servo4.write(val);
delay(15);

}