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better documentation

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This commit is contained in:
Gabe Rosenhouse 2014-02-19 14:04:37 -08:00
parent 34fd59c370
commit 3b718b816c
2 changed files with 44 additions and 16 deletions
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48
Marlin/Configuration.h
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@ -335,21 +335,44 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
#ifdef ENABLE_AUTO_BED_LEVELING
// Enable auto bed leveling at any 3 points that aren't colinear
#define AUTO_BED_LEVELING_ANY_POINTS
// There are 3 different ways to pick the X and Y locations to probe:
// 1. Basic 3-point probe at left-back, left-front, and right-front corners of a rectangle
// 2. Probe all points of a 2D lattice, defined by a rectangle and ACCURATE_BED_LEVELING_POINTS
// 3. 3-point probe at 3 arbitrary points that don't form a line.
// To enable mode 1:
// - #define ENABLE_AUTO_BED_LEVELING
// - Set the XXXX_PROBE_BED_POSITION values below
// - Don't define AUTO_BED_LEVELING_ANY_POINTS or ACCURATE_BED_LEVELING
// To enable mode 2:
// - #define ENABLE_AUTO_BED_LEVELING
// - Set the XXXX_PROBE_BED_POSITION values below
// - #define ACCURATE_BED_LEVELING
// - Set the ACCURATE_BED_LEVELING_POINTS to your desired density
// To enable mode 3:
// - #define ENABLE_AUTO_BED_LEVELING
// - #define AUTO_BED_LEVELING_ANY_POINTS
// - Set the ABL_PROBE_PT_XXXX values below
// - Comment out (undefine) ACCURATE_BED_LEVELING since that is incompatible
// Mode 3: Enable auto bed leveling at any 3 points that aren't colinear
// #define AUTO_BED_LEVELING_ANY_POINTS
#ifdef AUTO_BED_LEVELING_ANY_POINTS
#define ABL_PROBE_PT_1_X -11
#define ABL_PROBE_PT_1_Y -15
#define ABL_PROBE_PT_2_X -11
#define ABL_PROBE_PT_1_X 15
#define ABL_PROBE_PT_1_Y 15
#define ABL_PROBE_PT_2_X 25
#define ABL_PROBE_PT_2_Y 75
#define ABL_PROBE_PT_3_X 121
#define ABL_PROBE_PT_3_Y -15
#define ABL_PROBE_PT_3_X 125
#define ABL_PROBE_PT_3_Y 25
#else // not AUTO_BED_LEVELING_ANY_POINTS
// these are the positions on the bed to do the probing
// Modes 1 & 2:
// For mode 1, probing happens at left-back, left-front, and right-front corners
// For mode 2, probing happens at lattice points within this rectangle (see ACCURATE_BED_LEVELING_POINTS)
#define LEFT_PROBE_BED_POSITION 15
#define RIGHT_PROBE_BED_POSITION 170
#define BACK_PROBE_BED_POSITION 180
@ -398,8 +421,11 @@ const bool Z_MAX_ENDSTOP_INVERTING = true; // set to true to invert the logic of
// with accurate bed leveling, the bed is sampled in a ACCURATE_BED_LEVELING_POINTSxACCURATE_BED_LEVELING_POINTS grid and least squares solution is calculated
// Note: this feature occupies 10'206 byte
#define ACCURATE_BED_LEVELING
// Mode 2 only
#ifdef ACCURATE_BED_LEVELING
#ifdef AUTO_BED_LEVELING_ANY_POINTS
#error AUTO_BED_LEVELING_ANY_POINTS is incompatible with ACCURATE_BED_LEVELING
#endif
// I wouldn't see a reason to go above 3 (=9 probing points on the bed)
#define ACCURATE_BED_LEVELING_POINTS 2
#endif

12
Marlin/Marlin_main.cpp
View File

@ -1433,7 +1433,7 @@ void process_commands()
break;
#ifdef ENABLE_AUTO_BED_LEVELING
case 29: // G29 Detailed Z-Probe, probes the bed at 3 points.
case 29: // G29 Detailed Z-Probe, probes the bed at 3 or more points.
{
#if Z_MIN_PIN == -1
#error "You must have a Z_MIN endstop in order to enable Auto Bed Leveling feature!!! Z_MIN_PIN must point to a valid hardware pin."
@ -1463,6 +1463,7 @@ void process_commands()
feedrate = homing_feedrate[Z_AXIS];
#ifdef ACCURATE_BED_LEVELING
// probe at the points of a lattice grid
int xGridSpacing = (RIGHT_PROBE_BED_POSITION - LEFT_PROBE_BED_POSITION) / (ACCURATE_BED_LEVELING_POINTS-1);
int yGridSpacing = (BACK_PROBE_BED_POSITION - FRONT_PROBE_BED_POSITION) / (ACCURATE_BED_LEVELING_POINTS-1);
@ -1545,6 +1546,7 @@ void process_commands()
#ifdef AUTO_BED_LEVELING_ANY_POINTS
// Probe at 3 arbitrary points
// probe 1
float z_at_pt_1 = probe_pt(ABL_PROBE_PT_1_X, ABL_PROBE_PT_1_Y, Z_RAISE_BEFORE_PROBING);
@ -1558,14 +1560,14 @@ void process_commands()
set_bed_level_equation_any_pts(z_at_pt_1, z_at_pt_2, z_at_pt_3);
#else // not AUTO_BED_LEVELING_ANY_POINTS
// prob 1
// probe at 3 corners of a rectangle
// probe 1
float z_at_xLeft_yBack = probe_pt(LEFT_PROBE_BED_POSITION, BACK_PROBE_BED_POSITION, Z_RAISE_BEFORE_PROBING);
// prob 2
// probe 2
float z_at_xLeft_yFront = probe_pt(LEFT_PROBE_BED_POSITION, FRONT_PROBE_BED_POSITION, current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS);
// prob 3
// probe 3
float z_at_xRight_yFront = probe_pt(RIGHT_PROBE_BED_POSITION, FRONT_PROBE_BED_POSITION, current_position[Z_AXIS] + Z_RAISE_BETWEEN_PROBINGS);
clean_up_after_endstop_move();