Auto leveling Z-probe

Hello All,

I have to try install a auto level function on my printer.
But he don't do it. The Z axis don't probe.
I can't upload to a movie but I try to explain.

First he scan point one. but he don't probe. point two, three etc same story.
When he finished his scan en go to print. he corrects his z axis al little bit.
But not enough. see my marlin settings for more information

I use a capacitive sensor


//===========================================================================
//============================ Mesh Bed Leveling ============================
//===========================================================================

// #define MANUAL_BED_LEVELING // Add display menu option for bed leveling
// #define MESH_BED_LEVELING // Enable mesh bed leveling

#ifdef MANUAL_BED_LEVELING
#define MBL_Z_STEP 0.025 // Step size while manually probing Z axis
#endif // MANUAL_BED_LEVELING

#ifdef MESH_BED_LEVELING
#define MESH_MIN_X 10
#define MESH_MAX_X (X_MAX_POS - MESH_MIN_X)
#define MESH_MIN_Y 10
#define MESH_MAX_Y (Y_MAX_POS - MESH_MIN_Y)
#define MESH_NUM_X_POINTS 3 // Don't use more than 7 points per axis, implementation limited
#define MESH_NUM_Y_POINTS 3
#define MESH_HOME_SEARCH_Z 4 // Z after Home, bed somewhere below but above 0.0
#endif // MESH_BED_LEVELING

//===========================================================================
//============================= Bed Auto Leveling ===========================
//===========================================================================

// @section bedlevel

#define ENABLE_AUTO_BED_LEVELING // Delete the comment to enable (remove // at the start of the line)
#define Z_PROBE_REPEATABILITY_TEST // If not commented out, Z-Probe Repeatability test will be included if Auto Bed Leveling is Enabled.

#ifdef ENABLE_AUTO_BED_LEVELING

// There are 2 different ways to specify probing locations
//
// - "grid" mode
// Probe several points in a rectangular grid.
// You specify the rectangle and the density of sample points.
// This mode is preferred because there are more measurements.
//
// - "3-point" mode
// Probe 3 arbitrary points on the bed (that aren't colinear)
// You specify the XY coordinates of all 3 points.

// Enable this to sample the bed in a grid (least squares solution)
// Note: this feature generates 10KB extra code size
#define AUTO_BED_LEVELING_GRID

#ifdef AUTO_BED_LEVELING_GRID

#define LEFT_PROBE_BED_POSITION 5
#define RIGHT_PROBE_BED_POSITION 278
#define FRONT_PROBE_BED_POSITION 20
#define BACK_PROBE_BED_POSITION 170

#define MIN_PROBE_EDGE 10 // The probe square sides can be no smaller than this

// Set the number of grid points per dimension
// You probably don't need more than 3 (squared=9)
#define AUTO_BED_LEVELING_GRID_POINTS 3

#else // !AUTO_BED_LEVELING_GRID

// Arbitrary points to probe. A simple cross-product
// is used to estimate the plane of the bed.
#define ABL_PROBE_PT_1_X 15
#define ABL_PROBE_PT_1_Y 180
#define ABL_PROBE_PT_2_X 15
#define ABL_PROBE_PT_2_Y 20
#define ABL_PROBE_PT_3_X 170
#define ABL_PROBE_PT_3_Y 20

#endif // AUTO_BED_LEVELING_GRID

// Offsets to the probe relative to the extruder tip (Hotend - Probe)
// X and Y offsets must be integers
#define X_PROBE_OFFSET_FROM_EXTRUDER -0 // Probe on: -left +right
#define Y_PROBE_OFFSET_FROM_EXTRUDER -0 // Probe on: -front +behind
#define Z_PROBE_OFFSET_FROM_EXTRUDER -0.9 // -below (always!)

#define Z_RAISE_BEFORE_HOMING 10 // (in mm) Raise Z before homing (G28) for Probe Clearance.
// Be sure you have this distance over your Z_MAX_POS in case

#define XY_TRAVEL_SPEED 2000 // X and Y axis travel speed between probes, in mm/min

#define Z_RAISE_BEFORE_PROBING 10 //How much the extruder will be raised before traveling to the first probing point.
#define Z_RAISE_BETWEEN_PROBINGS 10 //How much the extruder will be raised when traveling from between next probing points
//#define Z_RAISE_AFTER_PROBING 1 //How much the extruder will be raised after the last probing point.

// #define Z_PROBE_END_SCRIPT "G1 Z10 F12000\nG1 X15 Y330\nG1 Z0.5\nG1 Z10" //These commands will be executed in the end of G29 routine.
//Useful to retract a deployable probe.

//#define Z_PROBE_SLED // turn on if you have a z-probe mounted on a sled like those designed by Charles Bell
//#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.

//If defined, the Probe servo will be turned on only during movement and then turned off to avoid jerk
//The value is the delay to turn the servo off after powered on - depends on the servo speed; 300ms is good value, but you can try lower it.
// You MUST HAVE the SERVO_ENDSTOPS defined to use here a value higher than zero otherwise your code will not compile.

// #define PROBE_SERVO_DEACTIVATION_DELAY 300


//If you have enabled the Bed Auto Leveling and are using the same Z Probe for Z Homing,
//it is highly recommended you let this Z_SAFE_HOMING enabled!!!

#define Z_SAFE_HOMING // This feature is meant to avoid Z homing with probe outside the bed area.
// When defined, it will:
// - Allow Z homing only after X and Y homing AND stepper drivers still enabled
// - If stepper drivers timeout, it will need X and Y homing again before Z homing
// - Position the probe in a defined XY point before Z Homing when homing all axis (G28)
// - Block Z homing only when the probe is outside bed area.

#ifdef Z_SAFE_HOMING

#define Z_SAFE_HOMING_X_POINT (X_MAX_LENGTH/2) // X point for Z homing when homing all axis (G28)
#define Z_SAFE_HOMING_Y_POINT (Y_MAX_LENGTH/2) // Y point for Z homing when homing all axis (G28)

#endif

// Support for a dedicated Z PROBE endstop separate from the Z MIN endstop.
// If you would like to use both a Z PROBE and a Z MIN endstop together or just a Z PROBE with a custom pin, uncomment #define Z_PROBE_ENDSTOP and read the instructions below.
// If you want to still use the Z min endstop for homing, disable Z_SAFE_HOMING above. Eg; to park the head outside the bed area when homing with G28.
// WARNING: The Z MIN endstop will need to set properly as it would without a Z PROBE to prevent head crashes and premature stopping during a print.
// To use a separate Z PROBE endstop, you must have a Z_PROBE_PIN defined in the pins.h file for your control board.
// If you are using a servo based Z PROBE, you will need to enable NUM_SERVOS, SERVO_ENDSTOPS and SERVO_ENDSTOPS_ANGLES in the R/C Servo below.
// RAMPS 1.3/1.4 boards may be able to use the 5V, Ground and the D32 pin in the Aux 4 section of the RAMPS board. Use 5V for powered sensors, otherwise connect to ground and D32
// for normally closed configuration and 5V and D32 for normally open configurations. Normally closed configuration is advised and assumed.
// The D32 pin in Aux 4 on RAMPS maps to the Arduino D32 pin. Z_PROBE_PIN is setting the pin to use on the Arduino. Since the D32 pin on the RAMPS maps to D32 on Arduino, this works.
// D32 is currently selected in the RAMPS 1.3/1.4 pin file. All other boards will need changes to the respective pins_XXXXX.h file.
// WARNING: Setting the wrong pin may have unexpected and potentially disastrous outcomes. Use with caution and do your homework.

//#define Z_PROBE_ENDSTOP

#endif // ENABLE_AUTO_BED_LEVELING


// @section homing

// The position of the homing switches
//#define MANUAL_HOME_POSITIONS // If defined, MANUAL_*_HOME_POS below will be used
//#define BED_CENTER_AT_0_0 // If defined, the center of the bed is at (X=0, Y=0)

// Manual homing switch locations:
// For deltabots this means top and center of the Cartesian print volume.
#ifdef MANUAL_HOME_POSITIONS
#define MANUAL_X_HOME_POS 0
#define MANUAL_Y_HOME_POS 0
#define MANUAL_Z_HOME_POS 0
//#define MANUAL_Z_HOME_POS 402 // For delta: Distance between nozzle and print surface after homing.
#endif

// @section movement

/**
* MOVEMENT SETTINGS
*/

#define HOMING_FEEDRATE {50*60, 50*60, 4*60, 0} // set the homing speeds (mm/min)

// default settings

#define DEFAULT_AXIS_STEPS_PER_UNIT {80.2407*2,80.5315*2,3261.103626,192.406*1*1.5} // default steps per unit for Ultimaker
#define DEFAULT_MAX_FEEDRATE {300, 300, 40, 45} // (mm/sec)
#define DEFAULT_MAX_ACCELERATION {3000,3000,100,8000} // X, Y, Z, E maximum start speed for accelerated moves. E default values are good for Skeinforge 40+, for older versions raise them a lot.

#define DEFAULT_ACCELERATION 3000 // X, Y, Z and E acceleration in mm/s^2 for printing moves
#define DEFAULT_RETRACT_ACCELERATION 3000 // E acceleration in mm/s^2 for retracts
#define DEFAULT_TRAVEL_ACCELERATION 3000 // X, Y, Z acceleration in mm/s^2 for travel (non printing) moves

// The speed change that does not require acceleration (i.e. the software might assume it can be done instantaneously)
#define DEFAULT_XYJERK 20.0 // (mm/sec)
#define DEFAULT_ZJERK 0.4 // (mm/sec)
#define DEFAULT_EJERK 5.0 // (mm/sec)

Edited 1 time(s). Last edit at 02/17/2016 02:10AM by Swengson.

#define RIGHT_PROBE_BED_POSITION 278 ____278?????? What kind of printer is this???

#define DEFAULT_AXIS_STEPS_PER_UNIT {80.2407*2,80.5315*2,3261.103626,192.406*1*1.5} // default steps per unit for Ultimaker _______ Again, what printer is this and has it ever worked with these numbers???

#define X_PROBE_OFFSET_FROM_EXTRUDER -0 // Probe on: -left +right
#define Y_PROBE_OFFSET_FROM_EXTRUDER -0 // Probe on: -front +behind __________ You have NO offset of your probe to your nozzle. I think you need to spend some time researching how to set up auto bed leveling using YouTube and this forum.

---

Folger Tech 2020 i3 and FT-5 as well as modified JGAurora A5 with direct drive E3D/Titan. All running the BLTOUCH.
Great kits. Having fun and running the heck out of them.
Running Marlin 1.1.0 RC8 on the i3 and FT5. Custom firmware on A5.
Folger Tech Wiki board >[folgertech.wikia.com]

I have used youtubee. It is a printer make by my own. the bed is very large.
the numbers are from the board megatronic 3.0.