Klipper: MCU which pins for step signal?

Hey,

I have a question. I have a project planed which would require up to 12 stepper drivers.
As a firmware I would like to use Klipper. In the Klipper config file one remaps the pins of the mcu. So one could make use of unused pins on a controller board which normally doesn't support 12 steppers.
As far as I've understood, you only step_pin and en_pin to control a stepper driver. Here's my question, does the step_pin need to be a special pin (e.g. hardware PWM).
I tried looking at the mapping of a RADDS shield and the Arduino Due ports put didn't really find a common denominator.

Thanks for the help.
Daniel

Stepper drivers need step and direction pins, and optionally enable. Enable can always be enabled by connecting enable pin to required level.. can even share enable... depends on your needs.

No the pins don't use PWM

Thank you for the information.

Klipper allows for the use of multiple mcu's so that may be an option for you as well.