2 servo Sweep wtih Arduino Uno pwm pin

Circuit-
connect yallow wire-pin4,pin9
red wire +5v
black or brown Gnd

Programming-

/* Sweep2
by mechanic37

*/

#include <Servo.h>

Servo A;  // create servo object to control a servo
Servo B;           // twelve servo objects can be created on most boards

int pos = 0;    // variable to store the servo position

void setup()
{
B.attach(4);
A.attach(9);  // attaches the servo on pin 9 to the servo object
}

void loop()
{
for(pos = 0; pos <= 180; pos += 1) // goes from 0 degrees to 180 degrees
{                                  // in steps of 1 degree
A.write(pos);              // tell servo to go to position in variable ‘pos’
B.write(pos);
delay(15);                       // waits 15ms for the servo to reach the position
}
for(pos = 180; pos>=0; pos-=1)     // goes from 180 degrees to 0 degrees
{
A.write(pos);              // tell servo to go to position in variable ‘pos’
B.write(pos);
delay(15);                       // waits 15ms for the servo to reach the position
}
}