TAZ autolevel sensor

This is my take on a servo mounted microswitch for an autoprobe. This is for the TAZ5. I wanted one that took a minimum of hardware mods. The probe holder mounts to the bottom of the extruder plate. Simply replace the existing M4x20 screw with a M4x30 screw and you are good to go. The switch arm fits over the servo horn. I used a Hitec HS-5050MG servo, because it I wanted sufficient torque to ensure the arm would reliably move into place, but any submicro servo should do. The servo is sec