Recently added a probe to my Anet A8 for auto bed levelling, calculations have been added based on position of probe to hotend as required. I'm using Marlin 1.1.9.
When I go into 'Prepare' in the printer settings to select auto home, it doesn't centre on the bed, seems to go to the back right. I presume this should be to the centre of the bed? I can't find where to change this in the config. Note the LCD screen shows X:153, Y:114. Config below.
//============================== Endstop Settings ===========================
// @section homing
// Specify here all the endstop connectors that are connected to any endstop or probe.
// Almost all printers will be using one per axis. Probes will use one or more of the
// extra connectors. Leave undefined any used for non-endstop and non-probe purposes.
#define USE_XMIN_PLUG
#define USE_YMIN_PLUG
#define USE_ZMIN_PLUG
//#define USE_XMAX_PLUG
//#define USE_YMAX_PLUG
//#define USE_ZMAX_PLUG
// Enable pullup for all endstops to prevent a floating state
#define ENDSTOPPULLUPS
#if DISABLED(ENDSTOPPULLUPS)
// Disable ENDSTOPPULLUPS to set pullups individually
//#define ENDSTOPPULLUP_XMAX
//#define ENDSTOPPULLUP_YMAX
//#define ENDSTOPPULLUP_ZMAX
//#define ENDSTOPPULLUP_XMIN
//#define ENDSTOPPULLUP_YMIN
//#define ENDSTOPPULLUP_ZMIN
//#define ENDSTOPPULLUP_ZMIN_PROBE
#endif
// Mechanical endstop with COM to ground and NC to Signal uses "false" here (most common setup).
#define X_MIN_ENDSTOP_INVERTING true // set to true to invert the logic of the endstop.
#define Y_MIN_ENDSTOP_INVERTING true // set to true to invert the logic of the endstop.
#define Z_MIN_ENDSTOP_INVERTING true // set to true to invert the logic of the endstop.
#define X_MAX_ENDSTOP_INVERTING false // set to true to invert the logic of the endstop.
#define Y_MAX_ENDSTOP_INVERTING false // set to true to invert the logic of the endstop.
#define Z_MAX_ENDSTOP_INVERTING false // set to true to invert the logic of the endstop.
#define Z_MIN_PROBE_ENDSTOP_INVERTING true // set to true to invert the logic of the probe.
// Enable this feature if all enabled endstop pins are interrupt-capable.
// This will remove the need to poll the interrupt pins, saving many CPU cycles.
//#define ENDSTOP_INTERRUPTS_FEATURE
/**
* Endstop Noise Filter
*
* Enable this option if endstops falsely trigger due to noise.
* NOTE: Enabling this feature means adds an error of +/-0.2mm, so homing
* will end up at a slightly different position on each G28. This will also
* reduce accuracy of some bed probes.
* For mechanical switches, the better approach to reduce noise is to install
* a 100 nanofarads ceramic capacitor in parallel with the switch, making it
* essentially noise-proof without sacrificing accuracy.
* This option also increases MCU load when endstops or the probe are enabled.
* So this is not recommended. USE AT YOUR OWN RISK.
* (This feature is not required for common micro-switches mounted on PCBs
* based on the Makerbot design, since they already include the 100nF capacitor.)
*/
//#define ENDSTOP_NOISE_FILTER
//=============================================================================
//============================== Movement Settings ============================
//=============================================================================
// @section motion
/**
* Default Settings
*
* These settings can be reset by M502
*
* Note that if EEPROM is enabled, saved values will override these.
*/
/**
* With this option each E stepper can have its own factors for the
* following movement settings. If fewer factors are given than the
* total number of extruders, the last value applies to the rest.
*/
//#define DISTINCT_E_FACTORS
/**
* Default Axis Steps Per Unit (steps/mm)
* Override with M92
* X, Y, Z, E0 [, E1[, E2[, E3[, E4]]]]
*/
#define DEFAULT_AXIS_STEPS_PER_UNIT { 100, 100, 400, 100 }
/**
* Default Max Feed Rate (mm/s)
* Override with M203
* X, Y, Z, E0 [, E1[, E2[, E3[, E4]]]]
*/
#define DEFAULT_MAX_FEEDRATE { 400, 400, 8, 50 }
/**
* Default Max Acceleration (change/s) change = mm/s
* (Maximum start speed for accelerated moves)
* Override with M201
* X, Y, Z, E0 [, E1[, E2[, E3[, E4]]]]
*/
#define DEFAULT_MAX_ACCELERATION { 2000, 2000, 100, 10000 }
/**
* Default Acceleration (change/s) change = mm/s
* Override with M204
*
* M204 P Acceleration
* M204 R Retract Acceleration
* M204 T Travel Acceleration
*/
#define DEFAULT_ACCELERATION 400 // X, Y, Z and E acceleration for printing moves
#define DEFAULT_RETRACT_ACCELERATION 1000 // E acceleration for retracts
#define DEFAULT_TRAVEL_ACCELERATION 1000 // X, Y, Z acceleration for travel (non printing) moves
/**
* Default Jerk (mm/s)
* Override with M205 X Y Z E
*
* "Jerk" specifies the minimum speed change that requires acceleration.
* When changing speed and direction, if the difference is less than the
* value set here, it may happen instantaneously.
*/
#define DEFAULT_XJERK 10.0
#define DEFAULT_YJERK 10.0
#define DEFAULT_ZJERK 0.3
#define DEFAULT_EJERK 5.0
/**
* S-Curve Acceleration
*
* This option eliminates vibration during printing by fitting a Bézier
* curve to move acceleration, producing much smoother direction changes.
*
* See https://github.com/synthetos/TinyG/wiki/Jerk-Controlled-Motion-Explained
*/
//#define S_CURVE_ACCELERATION
//===========================================================================
//============================= Z Probe Options =============================
//===========================================================================
// @section probes
//
// See http://marlinfw.org/docs/configuration/probes.html
//
/**
* 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
/**
* Z_MIN_PROBE_ENDSTOP
*
* Enable this option for a probe connected to any pin except Z-Min.
* (By default Marlin assumes the Z-Max endstop pin.)
* To use a custom Z Probe pin, set Z_MIN_PROBE_PIN below.
*
* - The simplest option is to use a free endstop connector.
* - Use 5V for powered (usually inductive) sensors.
*
* - RAMPS 1.3/1.4 boards may use the 5V, GND, and Aux4->D32 pin:
* - For simple switches connect...
* - normally-closed switches to GND and D32.
* - normally-open switches to 5V and D32.
*
* WARNING: Setting the wrong pin may have unexpected and potentially
* disastrous consequences. Use with caution and do your homework.
*
*/
//#define Z_MIN_PROBE_ENDSTOP
/**
* Probe Type
*
* Allen Key Probes, Servo Probes, Z-Sled Probes, FIX_MOUNTED_PROBE, etc.
* Activate one of these to use Auto Bed Leveling below.
*/
/**
* The "Manual Probe" provides a means to do "Auto" Bed Leveling without a probe.
* Use G29 repeatedly, adjusting the Z height at each point with movement commands
* or (with LCD_BED_LEVELING) the LCD controller.
*/
//#define PROBE_MANUALLY
//#define MANUAL_PROBE_START_Z 0.2
/**
* 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 Servo Probe, such as an endstop switch on a rotating arm.
*/
//#define Z_PROBE_SERVO_NR 0 // Defaults to SERVO 0 connector.
//#define Z_SERVO_ANGLES {70,0} // Z Servo Deploy and Stow angles
/**
* The BLTouch probe uses a Hall effect sensor and emulates a servo.
*/
//#define BLTOUCH
#if ENABLED(BLTOUCH)
//#define BLTOUCH_DELAY 375 // (ms) Enable and increase if needed
#endif
/**
* Enable one or more of the following if probing seems unreliable.
* Heaters and/or fans can be disabled during probing to minimize electrical
* noise. A delay can also be added to allow noise and vibration to settle.
* These options are most useful for the BLTouch probe, but may also improve
* readings with inductive probes and piezo sensors.
*/
//#define PROBING_HEATERS_OFF // Turn heaters off when probing
#if ENABLED(PROBING_HEATERS_OFF)
//#define WAIT_FOR_BED_HEATER // Wait for bed to heat back up between probes (to improve accuracy)
#endif
//#define PROBING_FANS_OFF // Turn fans off when probing
//#define DELAY_BEFORE_PROBING 200 // (ms) To prevent vibrations from triggering piezo sensors
// A probe that is deployed and stowed with a solenoid pin (SOL1_PIN)
//#define SOLENOID_PROBE
// A sled-mounted probe like those designed by Charles Bell.
//#define Z_PROBE_SLED
//#define SLED_DOCKING_OFFSET 5 // The extra distance the X axis must travel to pickup the sled. 0 should be fine but you can push it further if you'd like.
//
// For Z_PROBE_ALLEN_KEY see the Delta example configurations.
//
/**
* 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 -43
#define Y_PROBE_OFFSET_FROM_EXTRUDER -4
#define Z_PROBE_OFFSET_FROM_EXTRUDER 0
// X offset: -left +right [of the nozzle]
// Y offset: -front +behind [the nozzle]
// Z offset: -below +above [the nozzle]
// Certain types of probes need to stay away from edges
#define MIN_PROBE_EDGE 10
// X and Y axis travel speed (mm/m) between probes
#define XY_PROBE_SPEED 6000
// Feedrate (mm/m) for the first approach when double-probing (MULTIPLE_PROBING == 2)
#define Z_PROBE_SPEED_FAST HOMING_FEEDRATE_Z
// Feedrate (mm/m) for the "accurate" probe of each point
#define Z_PROBE_SPEED_SLOW (Z_PROBE_SPEED_FAST / 2)
// The number of probes to perform at each point.
// Set to 2 for a fast/slow probe, using the second probe result.
// Set to 3 or more for slow probes, averaging the results.
#define MULTIPLE_PROBING 3
/**
* Z probes require clearance when deploying, stowing, and moving between
* probe points to avoid hitting the bed and other hardware.
* Servo-mounted probes require extra space for the arm to rotate.
* Inductive probes need space to keep from triggering early.
*
* Use these settings to specify the distance (mm) to raise the probe (or
* lower the bed). The values set here apply over and above any (negative)
* probe Z Offset set with Z_PROBE_OFFSET_FROM_EXTRUDER, M851, or the LCD.
* Only integer values >= 1 are valid here.
*
* Example: `M851 Z-5` with a CLEARANCE of 4 => 9mm from bed to nozzle.
* But: `M851 Z+1` with a CLEARANCE of 2 => 2mm from bed to nozzle.
*/
#define Z_CLEARANCE_DEPLOY_PROBE 10 // Z Clearance for Deploy/Stow
#define Z_CLEARANCE_BETWEEN_PROBES 5 // Z Clearance between probe points
#define Z_CLEARANCE_MULTI_PROBE 5 // Z Clearance between multiple probes
//#define Z_AFTER_PROBING 5 // Z position after probing is done
#define Z_PROBE_LOW_POINT -2 // Farthest distance below the trigger-point to go before stopping
// For M851 give a range for adjusting the Z probe offset
#define Z_PROBE_OFFSET_RANGE_MIN -20
#define Z_PROBE_OFFSET_RANGE_MAX 20
// Enable the M48 repeatability test to test probe accuracy
//#define Z_MIN_PROBE_REPEATABILITY_TEST
// For Inverting Stepper Enable Pins (Active Low) use 0, Non Inverting (Active High) use 1
// :{ 0:'Low', 1:'High' }
#define X_ENABLE_ON 0
#define Y_ENABLE_ON 0
#define Z_ENABLE_ON 0
#define E_ENABLE_ON 0 // For all extruders
// Disables axis stepper immediately when it's not being used.
// WARNING: When motors turn off there is a chance of losing position accuracy!
#define DISABLE_X false
#define DISABLE_Y false
#define DISABLE_Z false
// Warn on display about possibly reduced accuracy
//#define DISABLE_REDUCED_ACCURACY_WARNING
// @section extruder
#define DISABLE_E false // For all extruders
#define DISABLE_INACTIVE_EXTRUDER true // Keep only the active extruder enabled.
// @section machine
// Invert the stepper direction. Change (or reverse the motor connector) if an axis goes the wrong way.
#define INVERT_X_DIR false
#define INVERT_Y_DIR false
#define INVERT_Z_DIR true
// @section extruder
// For direct drive extruder v9 set to true, for geared extruder set to false.
#define INVERT_E0_DIR false
#define INVERT_E1_DIR false
#define INVERT_E2_DIR false
#define INVERT_E3_DIR false
#define INVERT_E4_DIR false
// @section homing
//#define NO_MOTION_BEFORE_HOMING // Inhibit movement until all axes have been homed
//#define UNKNOWN_Z_NO_RAISE // Don't raise Z (lower the bed) if Z is "unknown." For beds that fall when Z is powered off.
//#define Z_HOMING_HEIGHT 4 // (in mm) Minimal z height before homing (G28) for Z clearance above the bed, clamps, ...
// Be sure you have this distance over your Z_MAX_POS in case.
// Direction of endstops when homing; 1=MAX, -1=MIN
// :[-1,1]
#define X_HOME_DIR -1
#define Y_HOME_DIR -1
#define Z_HOME_DIR -1
// @section machine
// The size of the print bed
#define X_BED_SIZE 220
#define Y_BED_SIZE 220
// Travel limits (mm) after homing, corresponding to endstop positions.
#define X_MIN_POS -33
#define Y_MIN_POS -10
#define Z_MIN_POS 0
#define X_MAX_POS X_BED_SIZE
#define Y_MAX_POS Y_BED_SIZE
#define Z_MAX_POS 240
/**
* Software Endstops
*
* - Prevent moves outside the set machine bounds.
* - Individual axes can be disabled, if desired.
* - X and Y only apply to Cartesian robots.
* - Use 'M211' to set software endstops on/off or report current state
*/
// Min software endstops constrain movement within minimum coordinate bounds
#define MIN_SOFTWARE_ENDSTOPS
#if ENABLED(MIN_SOFTWARE_ENDSTOPS)
#define MIN_SOFTWARE_ENDSTOP_X
#define MIN_SOFTWARE_ENDSTOP_Y
#define MIN_SOFTWARE_ENDSTOP_Z
#endif
// Max software endstops constrain movement within maximum coordinate bounds
#define MAX_SOFTWARE_ENDSTOPS
#if ENABLED(MAX_SOFTWARE_ENDSTOPS)
#define MAX_SOFTWARE_ENDSTOP_X
#define MAX_SOFTWARE_ENDSTOP_Y
#define MAX_SOFTWARE_ENDSTOP_Z
#endif
#if ENABLED(MIN_SOFTWARE_ENDSTOPS) || ENABLED(MAX_SOFTWARE_ENDSTOPS)
//#define SOFT_ENDSTOPS_MENU_ITEM // Enable/Disable software endstops from the LCD
#endif
/**
* Filament Runout Sensors
* Mechanical or opto endstops are used to check for the presence of filament.
*
* RAMPS-based boards use SERVO3_PIN for the first runout sensor.
* For other boards you may need to define FIL_RUNOUT_PIN, FIL_RUNOUT2_PIN, etc.
* By default the firmware assumes HIGH=FILAMENT PRESENT.
*/
//#define FILAMENT_RUNOUT_SENSOR
#if ENABLED(FILAMENT_RUNOUT_SENSOR)
#define NUM_RUNOUT_SENSORS 1 // Number of sensors, up to one per extruder. Define a FIL_RUNOUT#_PIN for each.
#define FIL_RUNOUT_INVERTING false // set to true to invert the logic of the sensor.
#define FIL_RUNOUT_PULLUP // Use internal pullup for filament runout pins.
#define FILAMENT_RUNOUT_SCRIPT "M600"
#endif
//===========================================================================
//=============================== Bed Leveling ==============================
//===========================================================================
// @section calibrate
/**
* 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
/**
* Normally G28 leaves leveling disabled on completion. Enable
* this option to have G28 restore the prior leveling state.
*/
//#define RESTORE_LEVELING_AFTER_G28
/**
* Enable detailed logging of G28, G29, M48, etc.
* Turn on with the command 'M111 S32'.
* NOTE: Requires a lot of PROGMEM!
*/
//#define DEBUG_LEVELING_FEATURE
#if ENABLED(MESH_BED_LEVELING) || ENABLED(AUTO_BED_LEVELING_BILINEAR) || ENABLED(AUTO_BED_LEVELING_UBL)
// Gradually reduce leveling correction until a set height is reached,
// at which point movement will be level to the machine's XY plane.
// The height can be set with M420 Z<height>
#define ENABLE_LEVELING_FADE_HEIGHT
// For Cartesian machines, instead of dividing moves on mesh boundaries,
// split up moves into short segments like a Delta. This follows the
// contours of the bed more closely than edge-to-edge straight moves.
#define SEGMENT_LEVELED_MOVES
#define LEVELED_SEGMENT_LENGTH 5.0 // (mm) Length of all segments (except the last one)
/**
* Enable the G26 Mesh Validation Pattern tool.
*/
//#define G26_MESH_VALIDATION
#if ENABLED(G26_MESH_VALIDATION)
#define MESH_TEST_NOZZLE_SIZE 0.4 // (mm) Diameter of primary nozzle.
#define MESH_TEST_LAYER_HEIGHT 0.2 // (mm) Default layer height for the G26 Mesh Validation Tool.
#define MESH_TEST_HOTEND_TEMP 205.0 // (°C) Default nozzle temperature for the G26 Mesh Validation Tool.
#define MESH_TEST_BED_TEMP 60.0 // (°C) Default bed temperature for the G26 Mesh Validation Tool.
#endif
#endif
#if ENABLED(AUTO_BED_LEVELING_LINEAR) || ENABLED(AUTO_BED_LEVELING_BILINEAR)
// Set the number of grid points per dimension.
#define GRID_MAX_POINTS_X 3
#define GRID_MAX_POINTS_Y GRID_MAX_POINTS_X
// Set the boundaries for probing (where the probe can reach).
//#define LEFT_PROBE_BED_POSITION MIN_PROBE_EDGE 10
//#define RIGHT_PROBE_BED_POSITION (X_BED_SIZE - MIN_PROBE_EDGE) 167
//#define FRONT_PROBE_BED_POSITION MIN_PROBE_EDGE 10
//#define BACK_PROBE_BED_POSITION (Y_BED_SIZE - MIN_PROBE_EDGE) 202
#define LEFT_PROBE_BED_POSITION 10
#define RIGHT_PROBE_BED_POSITION 167
#define FRONT_PROBE_BED_POSITION 10
#define BACK_PROBE_BED_POSITION 206
// Probe along the Y axis, advancing X after each column
//#define PROBE_Y_FIRST
#if ENABLED(AUTO_BED_LEVELING_BILINEAR)
// Beyond the probed grid, continue the implied tilt?
// Default is to maintain the height of the nearest edge.
//#define EXTRAPOLATE_BEYOND_GRID
//
// Experimental Subdivision of the grid by Catmull-Rom method.
// Synthesizes intermediate points to produce a more detailed mesh.
//
//#define ABL_BILINEAR_SUBDIVISION
#if ENABLED(ABL_BILINEAR_SUBDIVISION)
// Number of subdivisions between probe points
#define BILINEAR_SUBDIVISIONS 3
#endif
#endif
#elif ENABLED(AUTO_BED_LEVELING_UBL)
//===========================================================================
//========================= Unified Bed Leveling ============================
//===========================================================================
//#define MESH_EDIT_GFX_OVERLAY // Display a graphics overlay while editing the mesh
#define MESH_INSET 1 // Set Mesh bounds as an inset region of the bed
#define GRID_MAX_POINTS_X 10 // Don't use more than 15 points per axis, implementation limited.
#define GRID_MAX_POINTS_Y GRID_MAX_POINTS_X
#define UBL_MESH_EDIT_MOVES_Z // Sophisticated users prefer no movement of nozzle
#define UBL_SAVE_ACTIVE_ON_M500 // Save the currently active mesh in the current slot on M500
//#define UBL_Z_RAISE_WHEN_OFF_MESH 2.5 // When the nozzle is off the mesh, this value is used
// as the Z-Height correction value.
#elif ENABLED(MESH_BED_LEVELING)
//===========================================================================
//=================================== Mesh ==================================
//===========================================================================
#define MESH_INSET 10 // Set Mesh bounds as an inset region of the bed
#define GRID_MAX_POINTS_X 3 // Don't use more than 7 points per axis, implementation limited.
#define GRID_MAX_POINTS_Y GRID_MAX_POINTS_X
//#define MESH_G28_REST_ORIGIN // After homing all axes ('G28' or 'G28 XYZ') rest Z at Z_MIN_POS
#endif // BED_LEVELING
/**
* Points to probe for all 3-point Leveling procedures.
* Override if the automatically selected points are inadequate.
*/
#if ENABLED(AUTO_BED_LEVELING_3POINT) || ENABLED(AUTO_BED_LEVELING_UBL)
#define PROBE_PT_1_X 20
#define PROBE_PT_1_Y 160
#define PROBE_PT_2_X 20
#define PROBE_PT_2_Y 10
#define PROBE_PT_3_X 180
#define PROBE_PT_3_Y 10
#endif
/**
* Add a bed leveling sub-menu for ABL or MBL.
* Include a guided procedure if manual probing is enabled.
*/
//#define LCD_BED_LEVELING
#if ENABLED(LCD_BED_LEVELING)
#define MBL_Z_STEP 0.025 // Step size while manually probing Z axis.
#define LCD_PROBE_Z_RANGE 4 // Z Range centered on Z_MIN_POS for LCD Z adjustment
#endif
// Add a menu item to move between bed corners for manual bed adjustment
//#define LEVEL_BED_CORNERS
#if ENABLED(LEVEL_BED_CORNERS)
#define LEVEL_CORNERS_INSET 30 // (mm) An inset for corner leveling
//#define LEVEL_CENTER_TOO // Move to the center after the last corner
#endif
/**
* Commands to execute at the end of G29 probing.
* Useful to retract or move the Z probe out of the way.
*/
//#define Z_PROBE_END_SCRIPT "G1 Z10 F12000\nG1 X15 Y330\nG1 Z0.5\nG1 Z10"
// @section homing
// The center of the bed is at (X=0, Y=0)
//#define BED_CENTER_AT_0_0
// Manually set the home position. Leave these undefined for automatic settings.
// For DELTA this is the top-center of the Cartesian print volume.
//#define MANUAL_X_HOME_POS 0
//#define MANUAL_Y_HOME_POS 0
//#define MANUAL_Z_HOME_POS 0
// 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
#if ENABLED(Z_SAFE_HOMING)
#define Z_SAFE_HOMING_X_POINT ((X_BED_SIZE) / 2) // X point for Z homing when homing all axes (G28).
#define Z_SAFE_HOMING_Y_POINT ((Y_BED_SIZE) / 2) // Y point for Z homing when homing all axes (G28).
#endif
// Homing speeds (mm/m)
#define HOMING_FEEDRATE_XY (100*60)
#define HOMING_FEEDRATE_Z (4*60)
// @section calibrate
/**
* Bed Skew Compensation
*
* This feature corrects for misalignment in the XYZ axes.
*
* Take the following steps to get the bed skew in the XY plane:
* 1. Print a test square (e.g., https://www.thingiverse.com/thing:2563185)
* 2. For XY_DIAG_AC measure the diagonal A to C
* 3. For XY_DIAG_BD measure the diagonal B to D
* 4. For XY_SIDE_AD measure the edge A to D
*
* Marlin automatically computes skew factors from these measurements.
* Skew factors may also be computed and set manually:
*
* - Compute AB : SQRT(2*AC*AC+2*BD*BD-4*AD*AD)/2
* - XY_SKEW_FACTOR : TAN(PI/2-ACOS((AC*AC-AB*AB-AD*AD)/(2*AB*AD)))
*
* If desired, follow the same procedure for XZ and YZ.
* Use these diagrams for reference:
*
* Y Z Z
* ^ B-------C ^ B-------C ^ B-------C
* | / / | / / | / /
* | / / | / / | / /
* | A-------D | A-------D | A-------D
* +-------------->X +-------------->X +-------------->Y
* XY_SKEW_FACTOR XZ_SKEW_FACTOR YZ_SKEW_FACTOR
*/
//#define SKEW_CORRECTION
#if ENABLED(SKEW_CORRECTION)
// Input all length measurements here:
#define XY_DIAG_AC 282.8427124746
#define XY_DIAG_BD 282.8427124746
#define XY_SIDE_AD 200
// Or, set the default skew factors directly here
// to override the above measurements:
#define XY_SKEW_FACTOR 0.0
//#define SKEW_CORRECTION_FOR_Z
#if ENABLED(SKEW_CORRECTION_FOR_Z)
#define XZ_DIAG_AC 282.8427124746
#define XZ_DIAG_BD 282.8427124746
#define YZ_DIAG_AC 282.8427124746
#define YZ_DIAG_BD 282.8427124746
#define YZ_SIDE_AD 200
#define XZ_SKEW_FACTOR 0.0
#define YZ_SKEW_FACTOR 0.0
#endif
// Enable this option for M852 to set skew at runtime
//#define SKEW_CORRECTION_GCODE
#endif
