[FR] option to change servo timings

[Ilderi]

Is your feature request related to a problem? Please describe.

Right now timings for servo control are hard coded but hobby servos aren't a precise devices and their set angle for specified input pulse may vary.

For example, with default settings from marlin:

class Servo {
  static const int MIN_ANGLE =   0,
                   MAX_ANGLE = 270,
                   MIN_PULSE_WIDTH =  544,  // Shortest pulse sent to a servo
                   MAX_PULSE_WIDTH = 2400,  // Longest pulse sent to a servo
                   TAU_MSEC = 20,
                   TAU_USEC = (TAU_MSEC * 1000),
                   MAX_COMPARE = _BV(16) - 1; // 65535

My servo doesn't do full 270 degree rotation with those timings:

But if i change value of MAX_PULSE_WIDTH parameter to 2500 it works properly.

Are you looking for hardware support?

No response

Describe the feature you want

Make servo timings editable in configuration_adv file.

Additional context

No response

[Ilderi]

Right now my workaround is to change this default value but if someone has more than one servo that won't do the job.