April 30, 2014 04:15AM Registered: 2 months ago
Posts: 52
Buongiorno,
lo so, sono di coccio. stamane ho fatto un ennesima prova spostando tutto il gruppo del auto leveling a sx del hotend (visto frontalmente la stampante)
ho ripetuto passo passo la guida indicata all'inizio della discussione inserita
anche in software e firmware.
1 ho portato al centro del piatto con evidenziato un punto esatto l'hotend avvicinandomi in z. a questo punto ho dato il comando G92 X0 Y0 Z0
2 ho alzato la z di 10 mm ho abbassato il braccio e mi sono spostato sul medesimo punto abbassandomi sullo stesso fino al clic. segue il comando m114 che mi da gli spostamenti effettuati in base allo 0 effettuato al punto 1. (SENDING:M114 X:29.00 Y:9.00 Z:4.00 E:0.00 Calcola X: 29.00 Y:9.00 Z:4.00)
ho inserito questi dati nel marlin e caricato
(#define X_PROBE_OFFSET_FROM_EXTRUDER 29
#define Y_PROBE_OFFSET_FROM_EXTRUDER 9
#define Z_PROBE_OFFSET_FROM_EXTRUDER 4
3 ho iserito su pronterface uno alla volta i seguenti comandi:
G28 X0 Y0 ( gli assi si spostano nella loro home x tutto a sx y tutto dietro)
G0 F4000 X160 Y180 (gli assi si posizionano dove indicato)
G28 Z0 (l'asse z si alza di 10 e poi esegue il controllo abbassando il braccio)
G29 (si sposta a x35 y110 come indicato, i successivi tre li fa nello stesso punto, i restanti si spostano verso il finecorsa asse x e cerca lo 0 ma non trovando nulla ................
dove sbaglio?
questa è la mia parte di marlin relativa al abl
#define ENABLE_AUTO_BED_LEVELING // Delete the comment to enable (remove // at the start of the line)
#ifdef ENABLE_AUTO_BED_LEVELING
// There are 2 different ways to pick the X and Y locations to probe:
// - "grid" mode
// Probe every point in a rectangular grid
// You must specify the rectangle, and the density of sample points
// This mode is preferred because there are more measurements.
// It used to be called ACCURATE_BED_LEVELING but "grid" is more descriptive
// - "3-point" mode
//
//Probe 3 arbitrary points on the bed (that aren t colinear)
// You must specify the X & Y coordinates of all 3 points
#define AUTO_BED_LEVELING_GRID
// with AUTO_BED_LEVELING_GRID, the bed is sampled in a
// AUTO_BED_LEVELING_GRID_POINTSxAUTO_BED_LEVELING_GRID_POINTS grid
// and least squares solution is calculated
// Note: this feature occupies 10'206 byte
#ifdef AUTO_BED_LEVELING_GRID
// set the rectangle in which to probe
#define LEFT_PROBE_BED_POSITION 35
#define RIGHT_PROBE_BED_POSITION 195
#define BACK_PROBE_BED_POSITION 260
#define FRONT_PROBE_BED_POSITION 110
// set the number of grid points per dimension
// I wouldn't see a reason to go above 3 (=9 probing points on the bed)
#define AUTO_BED_LEVELING_GRID_POINTS 3
#else // not AUTO_BED_LEVELING_GRID
// with no grid, just probe 3 arbitrary points. A simple cross-product
// is used to esimate the plane of the print bed
#define ABL_PROBE_PT_1_X 35
#define ABL_PROBE_PT_1_Y 260
#define ABL_PROBE_PT_2_X 35
#define ABL_PROBE_PT_2_Y 110
#define ABL_PROBE_PT_3_X 195
#define ABL_PROBE_PT_3_Y 110
#endif // AUTO_BED_LEVELING_GRID
// these are the offsets to the probe relative to the extruder tip (Hotend - Probe)
#define X_PROBE_OFFSET_FROM_EXTRUDER 29
#define Y_PROBE_OFFSET_FROM_EXTRUDER 9
#define Z_PROBE_OFFSET_FROM_EXTRUDER 4
#define Z_RAISE_BEFORE_HOMING 4 // (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 4000 // X and Y axis travel speed between probes, in mm/min
#define Z_RAISE_BEFORE_PROBING 15 //How much the extruder will be raised before traveling to the first probing point.
#define Z_RAISE_BETWEEN_PROBINGS 5 //How much the extruder will be raised when traveling from between next probing points
//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
#endif // ENABLE_AUTO_BED_LEVELING