// Forum: https://forum.arduino.cc/t/how-to-move-2-servos-in-different-directions-with-speed-control/1091643
// This Wokwi project: https://wokwi.com/projects/356962335315431425

#include <Servo.h>

Servo myServo1;
Servo myServo2;

int position = 0;
int delta = +1;           // controls direction and speed

void setup() 
{
  myServo1.attach(5);
  myServo2.attach(6); 
}

void loop() 
{
  // Set the new positions of the servo motors.
  myServo1.write( position);
  myServo2.write( 180 - position);

  // Calculate new position.
  position += delta;
  if( position <= 0 or position >= 180)
    delta = -delta;

  // Control the speed with the delay, about 5 to 100ms.
  delay( 15);
}