Digital servos are supported in Marlin, maybe not officially but it works fine. You need to change the angles to microseconds.#define Z_SERVO_ANGLES {180,90} //analog #define Z_SERVO_ANGLES {2000,1000} //digital Just replace the value like above and it will work. You will need to determine the stow and deploy microseconds for your setup. http://ift.tt/2cIH7MN