How to make two servos move at the same time

Other Hardware Motors, Mechanics, Power and CNC
2

Move the servos in little steps (single degrees or microseconds) and calculate how long between steps. Use micros() to schedule the steps.

// Move all servos, each at their own speed, until they 
// have all reached their destinations.
bool StillMoving()
{
  bool moving = false;

   for (int i=0; i < ServoCount; i++)
  {
    if (servo[i].position != servo[i].targetPosition)
    {
      moving = true;
      if (micros() - servo[i].lastStepTime >= servo[i].stepInterval)
      {
        servo[i].lastStepTime += servo[i].stepInterval;
        servo[i].position += servo[i].step;
        servo[i].servo.write(servo[i].position);
      }
    }
  return moving;
}