#include <Servo.h>

Servo myservoa;  // create servo object to control a servo
Servo myservob;  // create servo object to control a servo


int potpina = A0;  // analog pin used to connect the potentiometer
int vala;    // variable to read the value from the analog pin
nt potpinb = A1;  // analog pin used to connect the potentiometer
int valb;    // variable to read the value from the analog pin

void setup() {
  myservoa.attach(9);  // attaches the servo on pin 9 to the servo object
  myservob.attach(10);
}

void loop() {
  vala = analogRead(potpina);            // reads the value of the potentiometer (value between 0 and 1023)
  vala = map(vala, 0, 1023, 0, 180);     // scale it for use with the servo (value between 0 and 180)
  myservoa.write(valb);                  // sets the servo position according to the scaled value
  valb = analogRead(potpinb);            // reads the value of the potentiometer (value between 0 and 1023)
  valb= map(valb, 0, 1023, 0, 180);     // scale it for use with the servo (value between 0 and 180)
  myservob.write(valb);                  // sets the servo position according to the scaled value
  delay(15);                               // waits for the servo to get there
}