DIY 3D 프린터에 오토베드레벨링 적용

ANET A8을 주문할 당시 처음부터 옵션으로 선택했던 오토베드레벨링 센서 세트…

그러나 OctoPrint와의 원활한 연동을 위해 Marlin 1.1.9 펌웨어로 바꾸면서 이리저리 수동 설정에 집중하느라

정작 4개월 가량을 그냥 버려두고 있었다는… -ㅠ- 그러다 누구나 이야기하는 수동 베드레벨링 지옥을 겪다 보니

결국 오랜만에 Marlin 펌웨어 설정과 일부 패치 적용 후 오토베드레벨링 활성화 완료!!!

처음에 저 근접센서 감도와 노즐과 베드 사이 거리를 미세하기 맞추기 위해선 여전히 휴리스틱 튜닝(일명 노가다 조정)이

필요했지만 일단 맞춰두고 나니 쾌적한 3D 프린팅 세상이 열림~ :D

설정한 옵션 위주로 정리

Marlin 1.1.9의 Configuration.h 파일

/**
 * Choose one of the options below to enable G29 Bed Leveling. The parameters
 * and behavior of G29 will change depending on your selection.
 *
 *  If using a Probe for Z Homing, enable Z_SAFE_HOMING also!
 *
 * - AUTO_BED_LEVELING_3POINT
 *   Probe 3 arbitrary points on the bed (that aren't collinear)
 *   You specify the XY coordinates of all 3 points.
 *   The result is a single tilted plane. Best for a flat bed.
 *
 * - AUTO_BED_LEVELING_LINEAR
 *   Probe several points in a grid.
 *   You specify the rectangle and the density of sample points.
 *   The result is a single tilted plane. Best for a flat bed.
 *
 * - AUTO_BED_LEVELING_BILINEAR
 *   Probe several points in a grid.
 *   You specify the rectangle and the density of sample points.
 *   The result is a mesh, best for large or uneven beds.
 *
 * - AUTO_BED_LEVELING_UBL (Unified Bed Leveling)
 *   A comprehensive bed leveling system combining the features and benefits
 *   of other systems. UBL also includes integrated Mesh Generation, Mesh
 *   Validation and Mesh Editing systems.
 *
 * - MESH_BED_LEVELING
 *   Probe a grid manually
 *   The result is a mesh, suitable for large or uneven beds. (See BILINEAR.)
 *   For machines without a probe, Mesh Bed Leveling provides a method to perform
 *   leveling in steps so you can manually adjust the Z height at each grid-point.
 *   With an LCD controller the process is guided step-by-step.
 */
//#define AUTO_BED_LEVELING_3POINT
//#define AUTO_BED_LEVELING_LINEAR
#define AUTO_BED_LEVELING_BILINEAR
//#define AUTO_BED_LEVELING_UBL
//#define MESH_BED_LEVELING

/**
 *   Z Probe to nozzle (X,Y) offset, relative to (0, 0).
 *   X and Y offsets must be integers.
 *
 *   In the following example the X and Y offsets are both positive:
 *   #define X_PROBE_OFFSET_FROM_EXTRUDER 10
 *   #define Y_PROBE_OFFSET_FROM_EXTRUDER 10
 *
 *      +-- BACK ---+
 *      |           |
 *    L |    (+) P  | R <-- probe (20,20)
 *    E |           | I
 *    F | (-) N (+) | G <-- nozzle (10,10)
 *    T |           | H
 *      |    (-)    | T
 *      |           |
 *      O-- FRONT --+
 *    (0,0)
 */
#define X_PROBE_OFFSET_FROM_EXTRUDER 15   // X offset: -left  +right  [of the nozzle]
#define Y_PROBE_OFFSET_FROM_EXTRUDER 55   // Y offset: -front +behind [the nozzle]
#define Z_PROBE_OFFSET_FROM_EXTRUDER 0   // Z offset: -below +above  [the nozzle]

// The size of the print bed
#define X_BED_SIZE 220
#define Y_BED_SIZE 220

// Set the boundaries for probing (where the probe can reach).
//#define LEFT_PROBE_BED_POSITION MIN_PROBE_EDGE
//#define RIGHT_PROBE_BED_POSITION (X_BED_SIZE - MIN_PROBE_EDGE)
//#define FRONT_PROBE_BED_POSITION MIN_PROBE_EDGE
//#define BACK_PROBE_BED_POSITION (Y_BED_SIZE - MIN_PROBE_EDGE)
#if X_PROBE_OFFSET_FROM_EXTRUDER < 0
  #define LEFT_PROBE_BED_POSITION (MIN_PROBE_EDGE)
  #define RIGHT_PROBE_BED_POSITION (X_BED_SIZE - 1 - MIN_PROBE_EDGE + X_PROBE_OFFSET_FROM_EXTRUDER)
#else
  #define LEFT_PROBE_BED_POSITION (X_PROBE_OFFSET_FROM_EXTRUDER + MIN_PROBE_EDGE)
  #define RIGHT_PROBE_BED_POSITION (X_BED_SIZE - 1 - MIN_PROBE_EDGE)
#endif
#if Y_PROBE_OFFSET_FROM_EXTRUDER < 0
  #define FRONT_PROBE_BED_POSITION (MIN_PROBE_EDGE)
  #define BACK_PROBE_BED_POSITION (Y_BED_SIZE - 1 - MIN_PROBE_EDGE + Y_PROBE_OFFSET_FROM_EXTRUDER)
#else
  #define FRONT_PROBE_BED_POSITION (Y_PROBE_OFFSET_FROM_EXTRUDER + MIN_PROBE_EDGE)
  #define BACK_PROBE_BED_POSITION (Y_BED_SIZE - 1 - MIN_PROBE_EDGE)
#endif

// Use "Z Safe Homing" to avoid homing with a Z probe outside the bed area.
//
// With this feature enabled:
//
// - Allow Z homing only after X and Y homing AND stepper drivers still enabled.
// - If stepper drivers time out, it will need X and Y homing again before Z homing.
// - Move the Z probe (or nozzle) to a defined XY point before Z Homing when homing all axes (G28).
// - Prevent Z homing when the Z probe is outside bed area.
//
#define Z_SAFE_HOMING

/**
 * A Fix-Mounted Probe either doesn't deploy or needs manual deployment.
 *   (e.g., an inductive probe or a nozzle-based probe-switch.)
 */
#define FIX_MOUNTED_PROBE

/**
 * Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN
 *
 * Enable this option for a probe connected to the Z Min endstop pin.
 */
#define Z_MIN_PROBE_USES_Z_MIN_ENDSTOP_PIN

G29 G-Code 명령어 적용

항상 프린팅 시작하기 전에 오토베드레벨링을 수행하기 위해 G28 X/Y/X 축 초기화 명령 후 적용